1 /* Compiler driver program that can handle many languages. 2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 4 2010, 2011, 2012 5 Free Software Foundation, Inc. 6 7 This file is part of GCC. 8 9 GCC is free software; you can redistribute it and/or modify it under 10 the terms of the GNU General Public License as published by the Free 11 Software Foundation; either version 3, or (at your option) any later 12 version. 13 14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 15 WARRANTY; without even the implied warranty of MERCHANTABILITY or 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 17 for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with GCC; see the file COPYING3. If not see 21 <http://www.gnu.org/licenses/>. */ 22 23 /* This program is the user interface to the C compiler and possibly to 24 other compilers. It is used because compilation is a complicated procedure 25 which involves running several programs and passing temporary files between 26 them, forwarding the users switches to those programs selectively, 27 and deleting the temporary files at the end. 28 29 CC recognizes how to compile each input file by suffixes in the file names. 30 Once it knows which kind of compilation to perform, the procedure for 31 compilation is specified by a string called a "spec". */ 32 33 #include "config.h" 34 #include "system.h" 35 #include "coretypes.h" 36 #include "multilib.h" /* before tm.h */ 37 #include "tm.h" 38 #include "xregex.h" 39 #include "obstack.h" 40 #include "intl.h" 41 #include "prefix.h" 42 #include "gcc.h" 43 #include "diagnostic.h" 44 #include "flags.h" 45 #include "opts.h" 46 #include "params.h" 47 #include "vec.h" 48 #include "filenames.h" 49 50 /* By default there is no special suffix for target executables. */ 51 /* FIXME: when autoconf is fixed, remove the host check - dj */ 52 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX) 53 #define HAVE_TARGET_EXECUTABLE_SUFFIX 54 #endif 55 56 /* By default there is no special suffix for host executables. */ 57 #ifdef HOST_EXECUTABLE_SUFFIX 58 #define HAVE_HOST_EXECUTABLE_SUFFIX 59 #else 60 #define HOST_EXECUTABLE_SUFFIX "" 61 #endif 62 63 /* By default, the suffix for target object files is ".o". */ 64 #ifdef TARGET_OBJECT_SUFFIX 65 #define HAVE_TARGET_OBJECT_SUFFIX 66 #else 67 #define TARGET_OBJECT_SUFFIX ".o" 68 #endif 69 70 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; 71 72 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */ 73 #ifndef LIBRARY_PATH_ENV 74 #define LIBRARY_PATH_ENV "LIBRARY_PATH" 75 #endif 76 77 /* If a stage of compilation returns an exit status >= 1, 78 compilation of that file ceases. */ 79 80 #define MIN_FATAL_STATUS 1 81 82 /* Flag set by cppspec.c to 1. */ 83 int is_cpp_driver; 84 85 /* Flag set to nonzero if an @file argument has been supplied to gcc. */ 86 static bool at_file_supplied; 87 88 /* Definition of string containing the arguments given to configure. */ 89 #include "configargs.h" 90 91 /* Flag saying to print the command line options understood by gcc and its 92 sub-processes. */ 93 94 static int print_help_list; 95 96 /* Flag saying to print the version of gcc and its sub-processes. */ 97 98 static int print_version; 99 100 /* Flag indicating whether we should ONLY print the command and 101 arguments (like verbose_flag) without executing the command. 102 Displayed arguments are quoted so that the generated command 103 line is suitable for execution. This is intended for use in 104 shell scripts to capture the driver-generated command line. */ 105 static int verbose_only_flag; 106 107 /* Flag indicating how to print command line options of sub-processes. */ 108 109 static int print_subprocess_help; 110 111 /* Whether we should report subprocess execution times to a file. */ 112 113 FILE *report_times_to_file = NULL; 114 115 /* Nonzero means place this string before uses of /, so that include 116 and library files can be found in an alternate location. */ 117 118 #ifdef TARGET_SYSTEM_ROOT 119 static const char *target_system_root = TARGET_SYSTEM_ROOT; 120 #else 121 static const char *target_system_root = 0; 122 #endif 123 124 /* Nonzero means pass the updated target_system_root to the compiler. */ 125 126 static int target_system_root_changed; 127 128 /* Nonzero means append this string to target_system_root. */ 129 130 static const char *target_sysroot_suffix = 0; 131 132 /* Nonzero means append this string to target_system_root for headers. */ 133 134 static const char *target_sysroot_hdrs_suffix = 0; 135 136 /* Nonzero means write "temp" files in source directory 137 and use the source file's name in them, and don't delete them. */ 138 139 static enum save_temps { 140 SAVE_TEMPS_NONE, /* no -save-temps */ 141 SAVE_TEMPS_CWD, /* -save-temps in current directory */ 142 SAVE_TEMPS_OBJ /* -save-temps in object directory */ 143 } save_temps_flag; 144 145 /* Output file to use to get the object directory for -save-temps=obj */ 146 static char *save_temps_prefix = 0; 147 static size_t save_temps_length = 0; 148 149 /* The compiler version. */ 150 151 static const char *compiler_version; 152 153 /* The target version. */ 154 155 static const char *const spec_version = DEFAULT_TARGET_VERSION; 156 157 /* The target machine. */ 158 159 static const char *spec_machine = DEFAULT_TARGET_MACHINE; 160 161 /* Nonzero if cross-compiling. 162 When -b is used, the value comes from the `specs' file. */ 163 164 #ifdef CROSS_DIRECTORY_STRUCTURE 165 static const char *cross_compile = "1"; 166 #else 167 static const char *cross_compile = "0"; 168 #endif 169 170 /* Greatest exit code of sub-processes that has been encountered up to 171 now. */ 172 static int greatest_status = 1; 173 174 /* This is the obstack which we use to allocate many strings. */ 175 176 static struct obstack obstack; 177 178 /* This is the obstack to build an environment variable to pass to 179 collect2 that describes all of the relevant switches of what to 180 pass the compiler in building the list of pointers to constructors 181 and destructors. */ 182 183 static struct obstack collect_obstack; 184 185 /* Forward declaration for prototypes. */ 186 struct path_prefix; 187 struct prefix_list; 188 189 static void init_spec (void); 190 static void store_arg (const char *, int, int); 191 static void insert_wrapper (const char *); 192 static char *load_specs (const char *); 193 static void read_specs (const char *, int); 194 static void set_spec (const char *, const char *); 195 static struct compiler *lookup_compiler (const char *, size_t, const char *); 196 static char *build_search_list (const struct path_prefix *, const char *, 197 bool, bool); 198 static void xputenv (const char *); 199 static void putenv_from_prefixes (const struct path_prefix *, const char *, 200 bool); 201 static int access_check (const char *, int); 202 static char *find_a_file (const struct path_prefix *, const char *, int, bool); 203 static void add_prefix (struct path_prefix *, const char *, const char *, 204 int, int, int); 205 static void add_sysrooted_prefix (struct path_prefix *, const char *, 206 const char *, int, int, int); 207 static char *skip_whitespace (char *); 208 static void delete_if_ordinary (const char *); 209 static void delete_temp_files (void); 210 static void delete_failure_queue (void); 211 static void clear_failure_queue (void); 212 static int check_live_switch (int, int); 213 static const char *handle_braces (const char *); 214 static inline bool input_suffix_matches (const char *, const char *); 215 static inline bool switch_matches (const char *, const char *, int); 216 static inline void mark_matching_switches (const char *, const char *, int); 217 static inline void process_marked_switches (void); 218 static const char *process_brace_body (const char *, const char *, const char *, int, int); 219 static const struct spec_function *lookup_spec_function (const char *); 220 static const char *eval_spec_function (const char *, const char *); 221 static const char *handle_spec_function (const char *); 222 static char *save_string (const char *, int); 223 static void set_collect_gcc_options (void); 224 static int do_spec_1 (const char *, int, const char *); 225 static int do_spec_2 (const char *); 226 static void do_option_spec (const char *, const char *); 227 static void do_self_spec (const char *); 228 static const char *find_file (const char *); 229 static int is_directory (const char *, bool); 230 static const char *validate_switches (const char *); 231 static void validate_all_switches (void); 232 static inline void validate_switches_from_spec (const char *); 233 static void give_switch (int, int); 234 static int used_arg (const char *, int); 235 static int default_arg (const char *, int); 236 static void set_multilib_dir (void); 237 static void print_multilib_info (void); 238 static void perror_with_name (const char *); 239 static void display_help (void); 240 static void add_preprocessor_option (const char *, int); 241 static void add_assembler_option (const char *, int); 242 static void add_linker_option (const char *, int); 243 static void process_command (unsigned int, struct cl_decoded_option *); 244 static int execute (void); 245 static void alloc_args (void); 246 static void clear_args (void); 247 static void fatal_signal (int); 248 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 249 static void init_gcc_specs (struct obstack *, const char *, const char *, 250 const char *); 251 #endif 252 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 253 static const char *convert_filename (const char *, int, int); 254 #endif 255 256 static const char *getenv_spec_function (int, const char **); 257 static const char *if_exists_spec_function (int, const char **); 258 static const char *if_exists_else_spec_function (int, const char **); 259 static const char *replace_outfile_spec_function (int, const char **); 260 static const char *remove_outfile_spec_function (int, const char **); 261 static const char *version_compare_spec_function (int, const char **); 262 static const char *include_spec_function (int, const char **); 263 static const char *find_file_spec_function (int, const char **); 264 static const char *find_plugindir_spec_function (int, const char **); 265 static const char *print_asm_header_spec_function (int, const char **); 266 static const char *compare_debug_dump_opt_spec_function (int, const char **); 267 static const char *compare_debug_self_opt_spec_function (int, const char **); 268 static const char *compare_debug_auxbase_opt_spec_function (int, const char **); 269 static const char *pass_through_libs_spec_func (int, const char **); 270 static char *convert_white_space (char *); 271 272 /* The Specs Language 273 274 Specs are strings containing lines, each of which (if not blank) 275 is made up of a program name, and arguments separated by spaces. 276 The program name must be exact and start from root, since no path 277 is searched and it is unreliable to depend on the current working directory. 278 Redirection of input or output is not supported; the subprograms must 279 accept filenames saying what files to read and write. 280 281 In addition, the specs can contain %-sequences to substitute variable text 282 or for conditional text. Here is a table of all defined %-sequences. 283 Note that spaces are not generated automatically around the results of 284 expanding these sequences; therefore, you can concatenate them together 285 or with constant text in a single argument. 286 287 %% substitute one % into the program name or argument. 288 %i substitute the name of the input file being processed. 289 %b substitute the basename of the input file being processed. 290 This is the substring up to (and not including) the last period 291 and not including the directory unless -save-temps was specified 292 to put temporaries in a different location. 293 %B same as %b, but include the file suffix (text after the last period). 294 %gSUFFIX 295 substitute a file name that has suffix SUFFIX and is chosen 296 once per compilation, and mark the argument a la %d. To reduce 297 exposure to denial-of-service attacks, the file name is now 298 chosen in a way that is hard to predict even when previously 299 chosen file names are known. For example, `%g.s ... %g.o ... %g.s' 300 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches 301 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it 302 had been pre-processed. Previously, %g was simply substituted 303 with a file name chosen once per compilation, without regard 304 to any appended suffix (which was therefore treated just like 305 ordinary text), making such attacks more likely to succeed. 306 %|SUFFIX 307 like %g, but if -pipe is in effect, expands simply to "-". 308 %mSUFFIX 309 like %g, but if -pipe is in effect, expands to nothing. (We have both 310 %| and %m to accommodate differences between system assemblers; see 311 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.) 312 %uSUFFIX 313 like %g, but generates a new temporary file name even if %uSUFFIX 314 was already seen. 315 %USUFFIX 316 substitutes the last file name generated with %uSUFFIX, generating a 317 new one if there is no such last file name. In the absence of any 318 %uSUFFIX, this is just like %gSUFFIX, except they don't share 319 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s' 320 would involve the generation of two distinct file names, one 321 for each `%g.s' and another for each `%U.s'. Previously, %U was 322 simply substituted with a file name chosen for the previous %u, 323 without regard to any appended suffix. 324 %jSUFFIX 325 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is 326 writable, and if save-temps is off; otherwise, substitute the name 327 of a temporary file, just like %u. This temporary file is not 328 meant for communication between processes, but rather as a junk 329 disposal mechanism. 330 %.SUFFIX 331 substitutes .SUFFIX for the suffixes of a matched switch's args when 332 it is subsequently output with %*. SUFFIX is terminated by the next 333 space or %. 334 %d marks the argument containing or following the %d as a 335 temporary file name, so that that file will be deleted if GCC exits 336 successfully. Unlike %g, this contributes no text to the argument. 337 %w marks the argument containing or following the %w as the 338 "output file" of this compilation. This puts the argument 339 into the sequence of arguments that %o will substitute later. 340 %V indicates that this compilation produces no "output file". 341 %W{...} 342 like %{...} but mark last argument supplied within 343 as a file to be deleted on failure. 344 %o substitutes the names of all the output files, with spaces 345 automatically placed around them. You should write spaces 346 around the %o as well or the results are undefined. 347 %o is for use in the specs for running the linker. 348 Input files whose names have no recognized suffix are not compiled 349 at all, but they are included among the output files, so they will 350 be linked. 351 %O substitutes the suffix for object files. Note that this is 352 handled specially when it immediately follows %g, %u, or %U 353 (with or without a suffix argument) because of the need for 354 those to form complete file names. The handling is such that 355 %O is treated exactly as if it had already been substituted, 356 except that %g, %u, and %U do not currently support additional 357 SUFFIX characters following %O as they would following, for 358 example, `.o'. 359 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot 360 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH 361 and -B options) and -imultilib as necessary. 362 %s current argument is the name of a library or startup file of some sort. 363 Search for that file in a standard list of directories 364 and substitute the full name found. 365 %eSTR Print STR as an error message. STR is terminated by a newline. 366 Use this when inconsistent options are detected. 367 %nSTR Print STR as a notice. STR is terminated by a newline. 368 %x{OPTION} Accumulate an option for %X. 369 %X Output the accumulated linker options specified by compilations. 370 %Y Output the accumulated assembler options specified by compilations. 371 %Z Output the accumulated preprocessor options specified by compilations. 372 %a process ASM_SPEC as a spec. 373 This allows config.h to specify part of the spec for running as. 374 %A process ASM_FINAL_SPEC as a spec. A capital A is actually 375 used here. This can be used to run a post-processor after the 376 assembler has done its job. 377 %D Dump out a -L option for each directory in startfile_prefixes. 378 If multilib_dir is set, extra entries are generated with it affixed. 379 %l process LINK_SPEC as a spec. 380 %L process LIB_SPEC as a spec. 381 %G process LIBGCC_SPEC as a spec. 382 %R Output the concatenation of target_system_root and 383 target_sysroot_suffix. 384 %S process STARTFILE_SPEC as a spec. A capital S is actually used here. 385 %E process ENDFILE_SPEC as a spec. A capital E is actually used here. 386 %C process CPP_SPEC as a spec. 387 %1 process CC1_SPEC as a spec. 388 %2 process CC1PLUS_SPEC as a spec. 389 %* substitute the variable part of a matched option. (See below.) 390 Note that each comma in the substituted string is replaced by 391 a single space. 392 %<S remove all occurrences of -S from the command line. 393 Note - this command is position dependent. % commands in the 394 spec string before this one will see -S, % commands in the 395 spec string after this one will not. 396 %>S Similar to "%<S", but keep it in the GCC command line. 397 %<S* remove all occurrences of all switches beginning with -S from the 398 command line. 399 %:function(args) 400 Call the named function FUNCTION, passing it ARGS. ARGS is 401 first processed as a nested spec string, then split into an 402 argument vector in the usual fashion. The function returns 403 a string which is processed as if it had appeared literally 404 as part of the current spec. 405 %{S} substitutes the -S switch, if that switch was given to GCC. 406 If that switch was not specified, this substitutes nothing. 407 Here S is a metasyntactic variable. 408 %{S*} substitutes all the switches specified to GCC whose names start 409 with -S. This is used for -o, -I, etc; switches that take 410 arguments. GCC considers `-o foo' as being one switch whose 411 name starts with `o'. %{o*} would substitute this text, 412 including the space; thus, two arguments would be generated. 413 %{S*&T*} likewise, but preserve order of S and T options (the order 414 of S and T in the spec is not significant). Can be any number 415 of ampersand-separated variables; for each the wild card is 416 optional. Useful for CPP as %{D*&U*&A*}. 417 418 %{S:X} substitutes X, if the -S switch was given to GCC. 419 %{!S:X} substitutes X, if the -S switch was NOT given to GCC. 420 %{S*:X} substitutes X if one or more switches whose names start 421 with -S was given to GCC. Normally X is substituted only 422 once, no matter how many such switches appeared. However, 423 if %* appears somewhere in X, then X will be substituted 424 once for each matching switch, with the %* replaced by the 425 part of that switch that matched the '*'. 426 %{.S:X} substitutes X, if processing a file with suffix S. 427 %{!.S:X} substitutes X, if NOT processing a file with suffix S. 428 %{,S:X} substitutes X, if processing a file which will use spec S. 429 %{!,S:X} substitutes X, if NOT processing a file which will use spec S. 430 431 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be 432 combined with '!', '.', ',', and '*' as above binding stronger 433 than the OR. 434 If %* appears in X, all of the alternatives must be starred, and 435 only the first matching alternative is substituted. 436 %{S:X; if S was given to GCC, substitutes X; 437 T:Y; else if T was given to GCC, substitutes Y; 438 :D} else substitutes D. There can be as many clauses as you need. 439 This may be combined with '.', '!', ',', '|', and '*' as above. 440 441 %(Spec) processes a specification defined in a specs file as *Spec: 442 443 The conditional text X in a %{S:X} or similar construct may contain 444 other nested % constructs or spaces, or even newlines. They are 445 processed as usual, as described above. Trailing white space in X is 446 ignored. White space may also appear anywhere on the left side of the 447 colon in these constructs, except between . or * and the corresponding 448 word. 449 450 The -O, -f, -m, and -W switches are handled specifically in these 451 constructs. If another value of -O or the negated form of a -f, -m, or 452 -W switch is found later in the command line, the earlier switch 453 value is ignored, except with {S*} where S is just one letter; this 454 passes all matching options. 455 456 The character | at the beginning of the predicate text is used to indicate 457 that a command should be piped to the following command, but only if -pipe 458 is specified. 459 460 Note that it is built into GCC which switches take arguments and which 461 do not. You might think it would be useful to generalize this to 462 allow each compiler's spec to say which switches take arguments. But 463 this cannot be done in a consistent fashion. GCC cannot even decide 464 which input files have been specified without knowing which switches 465 take arguments, and it must know which input files to compile in order 466 to tell which compilers to run. 467 468 GCC also knows implicitly that arguments starting in `-l' are to be 469 treated as compiler output files, and passed to the linker in their 470 proper position among the other output files. */ 471 472 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */ 473 474 /* config.h can define ASM_SPEC to provide extra args to the assembler 475 or extra switch-translations. */ 476 #ifndef ASM_SPEC 477 #define ASM_SPEC "" 478 #endif 479 480 /* config.h can define ASM_FINAL_SPEC to run a post processor after 481 the assembler has run. */ 482 #ifndef ASM_FINAL_SPEC 483 #define ASM_FINAL_SPEC "" 484 #endif 485 486 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor 487 or extra switch-translations. */ 488 #ifndef CPP_SPEC 489 #define CPP_SPEC "" 490 #endif 491 492 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus 493 or extra switch-translations. */ 494 #ifndef CC1_SPEC 495 #define CC1_SPEC "" 496 #endif 497 498 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus 499 or extra switch-translations. */ 500 #ifndef CC1PLUS_SPEC 501 #define CC1PLUS_SPEC "" 502 #endif 503 504 /* config.h can define LINK_SPEC to provide extra args to the linker 505 or extra switch-translations. */ 506 #ifndef LINK_SPEC 507 #define LINK_SPEC "" 508 #endif 509 510 /* config.h can define LIB_SPEC to override the default libraries. */ 511 #ifndef LIB_SPEC 512 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}" 513 #endif 514 515 /* mudflap specs */ 516 #ifndef MFWRAP_SPEC 517 /* XXX: valid only for GNU ld */ 518 /* XXX: should exactly match hooks provided by libmudflap.a */ 519 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \ 520 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\ 521 --wrap=mmap --wrap=mmap64 --wrap=munmap --wrap=alloca\ 522 } %{fmudflapth: --wrap=pthread_create\ 523 }} %{fmudflap|fmudflapth: --wrap=main}" 524 #endif 525 #ifndef MFLIB_SPEC 526 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}" 527 #endif 528 529 /* When using -fsplit-stack we need to wrap pthread_create, in order 530 to initialize the stack guard. We always use wrapping, rather than 531 shared library ordering, and we keep the wrapper function in 532 libgcc. This is not yet a real spec, though it could become one; 533 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping 534 only works with GNU ld and gold. FIXME: This is incompatible with 535 -fmudflap when linking statically, which wants to do its own 536 wrapping. */ 537 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}" 538 539 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is 540 included. */ 541 #ifndef LIBGCC_SPEC 542 #if defined(REAL_LIBGCC_SPEC) 543 #define LIBGCC_SPEC REAL_LIBGCC_SPEC 544 #elif defined(LINK_LIBGCC_SPECIAL_1) 545 /* Have gcc do the search for libgcc.a. */ 546 #define LIBGCC_SPEC "libgcc.a%s" 547 #else 548 #define LIBGCC_SPEC "-lgcc" 549 #endif 550 #endif 551 552 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */ 553 #ifndef STARTFILE_SPEC 554 #define STARTFILE_SPEC \ 555 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}" 556 #endif 557 558 /* config.h can define ENDFILE_SPEC to override the default crtn files. */ 559 #ifndef ENDFILE_SPEC 560 #define ENDFILE_SPEC "" 561 #endif 562 563 #ifndef LINKER_NAME 564 #define LINKER_NAME "collect2" 565 #endif 566 567 #ifdef HAVE_AS_DEBUG_PREFIX_MAP 568 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}" 569 #else 570 #define ASM_MAP "" 571 #endif 572 573 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g' 574 to the assembler. */ 575 #ifndef ASM_DEBUG_SPEC 576 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \ 577 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) 578 # define ASM_DEBUG_SPEC \ 579 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \ 580 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \ 581 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP) 582 # else 583 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) 584 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP 585 # endif 586 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) 587 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP 588 # endif 589 # endif 590 #endif 591 #ifndef ASM_DEBUG_SPEC 592 # define ASM_DEBUG_SPEC "" 593 #endif 594 595 /* Here is the spec for running the linker, after compiling all files. */ 596 597 /* This is overridable by the target in case they need to specify the 598 -lgcc and -lc order specially, yet not require them to override all 599 of LINK_COMMAND_SPEC. */ 600 #ifndef LINK_GCC_C_SEQUENCE_SPEC 601 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G" 602 #endif 603 604 #ifndef LINK_SSP_SPEC 605 #ifdef TARGET_LIBC_PROVIDES_SSP 606 #define LINK_SSP_SPEC "%{fstack-protector:}" 607 #else 608 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}" 609 #endif 610 #endif 611 612 #ifndef LINK_PIE_SPEC 613 #ifdef HAVE_LD_PIE 614 #define LINK_PIE_SPEC "%{pie:-pie} " 615 #else 616 #define LINK_PIE_SPEC "%{pie:} " 617 #endif 618 #endif 619 620 #ifndef LINK_BUILDID_SPEC 621 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID) 622 # define LINK_BUILDID_SPEC "%{!r:--build-id} " 623 # endif 624 #endif 625 626 /* Conditional to test whether the LTO plugin is used or not. 627 FIXME: For slim LTO we will need to enable plugin unconditionally. This 628 still cause problems with PLUGIN_LD != LD and when plugin is built but 629 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable 630 plugin only when LTO is enabled. We still honor explicit 631 -fuse-linker-plugin if the linker used understands -plugin. */ 632 633 /* The linker has some plugin support. */ 634 #if HAVE_LTO_PLUGIN > 0 635 /* The linker used has full plugin support, use LTO plugin by default. */ 636 #if HAVE_LTO_PLUGIN == 2 637 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin" 638 #define PLUGIN_COND_CLOSE "}" 639 #else 640 /* The linker used has limited plugin support, use LTO plugin with explicit 641 -fuse-linker-plugin. */ 642 #define PLUGIN_COND "fuse-linker-plugin" 643 #define PLUGIN_COND_CLOSE "" 644 #endif 645 #define LINK_PLUGIN_SPEC \ 646 "%{"PLUGIN_COND": \ 647 -plugin %(linker_plugin_file) \ 648 -plugin-opt=%(lto_wrapper) \ 649 -plugin-opt=-fresolution=%u.res \ 650 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \ 651 }"PLUGIN_COND_CLOSE 652 #else 653 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */ 654 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\ 655 %e-fuse-linker-plugin is not supported in this configuration}" 656 #endif 657 658 659 /* -u* was put back because both BSD and SysV seem to support it. */ 660 /* %{static:} simply prevents an error message if the target machine 661 doesn't handle -static. */ 662 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker 663 scripts which exist in user specified directories, or in standard 664 directories. */ 665 /* We pass any -flto flags on to the linker, which is expected 666 to understand them. In practice, this means it had better be collect2. */ 667 /* %{e*} includes -export-dynamic; see comment in common.opt. */ 668 #ifndef LINK_COMMAND_SPEC 669 #define LINK_COMMAND_SPEC "\ 670 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ 671 %(linker) " \ 672 LINK_PLUGIN_SPEC \ 673 "%{flto|flto=*:%<fcompare-debug*} \ 674 %{flto} %{flto=*} %l " LINK_PIE_SPEC \ 675 "%X %{o*} %{e*} %{N} %{n} %{r}\ 676 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\ 677 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\ 678 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\ 679 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\ 680 %(mflib) " STACK_SPLIT_SPEC "\ 681 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\ 682 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\ 683 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}" 684 #endif 685 686 #ifndef LINK_LIBGCC_SPEC 687 /* Generate -L options for startfile prefix list. */ 688 # define LINK_LIBGCC_SPEC "%D" 689 #endif 690 691 #ifndef STARTFILE_PREFIX_SPEC 692 # define STARTFILE_PREFIX_SPEC "" 693 #endif 694 695 #ifndef SYSROOT_SPEC 696 # define SYSROOT_SPEC "--sysroot=%R" 697 #endif 698 699 #ifndef SYSROOT_SUFFIX_SPEC 700 # define SYSROOT_SUFFIX_SPEC "" 701 #endif 702 703 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC 704 # define SYSROOT_HEADERS_SUFFIX_SPEC "" 705 #endif 706 707 static const char *asm_debug; 708 static const char *cpp_spec = CPP_SPEC; 709 static const char *cc1_spec = CC1_SPEC; 710 static const char *cc1plus_spec = CC1PLUS_SPEC; 711 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC; 712 static const char *link_ssp_spec = LINK_SSP_SPEC; 713 static const char *asm_spec = ASM_SPEC; 714 static const char *asm_final_spec = ASM_FINAL_SPEC; 715 static const char *link_spec = LINK_SPEC; 716 static const char *lib_spec = LIB_SPEC; 717 static const char *mfwrap_spec = MFWRAP_SPEC; 718 static const char *mflib_spec = MFLIB_SPEC; 719 static const char *link_gomp_spec = ""; 720 static const char *libgcc_spec = LIBGCC_SPEC; 721 static const char *endfile_spec = ENDFILE_SPEC; 722 static const char *startfile_spec = STARTFILE_SPEC; 723 static const char *linker_name_spec = LINKER_NAME; 724 static const char *linker_plugin_file_spec = ""; 725 static const char *lto_wrapper_spec = ""; 726 static const char *lto_gcc_spec = ""; 727 static const char *link_command_spec = LINK_COMMAND_SPEC; 728 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC; 729 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC; 730 static const char *sysroot_spec = SYSROOT_SPEC; 731 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC; 732 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC; 733 static const char *self_spec = ""; 734 735 /* Standard options to cpp, cc1, and as, to reduce duplication in specs. 736 There should be no need to override these in target dependent files, 737 but we need to copy them to the specs file so that newer versions 738 of the GCC driver can correctly drive older tool chains with the 739 appropriate -B options. */ 740 741 /* When cpplib handles traditional preprocessing, get rid of this, and 742 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so 743 that we default the front end language better. */ 744 static const char *trad_capable_cpp = 745 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}"; 746 747 /* We don't wrap .d files in %W{} since a missing .d file, and 748 therefore no dependency entry, confuses make into thinking a .o 749 file that happens to exist is up-to-date. */ 750 static const char *cpp_unique_options = 751 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\ 752 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\ 753 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\ 754 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\ 755 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\ 756 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\ 757 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ 758 %{H} %C %{D*&U*&A*} %{i*} %Z %i\ 759 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\ 760 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\ 761 %{E|M|MM:%W{o*}}"; 762 763 /* This contains cpp options which are common with cc1_options and are passed 764 only when preprocessing only to avoid duplication. We pass the cc1 spec 765 options to the preprocessor so that it the cc1 spec may manipulate 766 options used to set target flags. Those special target flags settings may 767 in turn cause preprocessor symbols to be defined specially. */ 768 static const char *cpp_options = 769 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\ 770 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\ 771 %{undef} %{save-temps*:-fpch-preprocess}"; 772 773 /* This contains cpp options which are not passed when the preprocessor 774 output will be used by another program. */ 775 static const char *cpp_debug_options = "%{d*}"; 776 777 /* NB: This is shared amongst all front-ends, except for Ada. */ 778 static const char *cc1_options = 779 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ 780 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ 781 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\ 782 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \ 783 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \ 784 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\ 785 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\ 786 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\ 787 %{-target-help:--target-help}\ 788 %{-version:--version}\ 789 %{-help=*:--help=%*}\ 790 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\ 791 %{fsyntax-only:-o %j} %{-param*}\ 792 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\ 793 %{coverage:-fprofile-arcs -ftest-coverage}"; 794 795 static const char *asm_options = 796 "%{-target-help:%:print-asm-header()} " 797 #if HAVE_GNU_AS 798 /* If GNU AS is used, then convert -w (no warnings), -I, and -v 799 to the assembler equivalents. */ 800 "%{v} %{w:-W} %{I*} " 801 #endif 802 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}"; 803 804 static const char *invoke_as = 805 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT 806 "%{!fwpa:\ 807 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ 808 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\ 809 }"; 810 #else 811 "%{!fwpa:\ 812 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ 813 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\ 814 }"; 815 #endif 816 817 /* Some compilers have limits on line lengths, and the multilib_select 818 and/or multilib_matches strings can be very long, so we build them at 819 run time. */ 820 static struct obstack multilib_obstack; 821 static const char *multilib_select; 822 static const char *multilib_matches; 823 static const char *multilib_defaults; 824 static const char *multilib_exclusions; 825 826 /* Check whether a particular argument is a default argument. */ 827 828 #ifndef MULTILIB_DEFAULTS 829 #define MULTILIB_DEFAULTS { "" } 830 #endif 831 832 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS; 833 834 #ifndef DRIVER_SELF_SPECS 835 #define DRIVER_SELF_SPECS "" 836 #endif 837 838 /* Adding -fopenmp should imply pthreads. This is particularly important 839 for targets that use different start files and suchlike. */ 840 #ifndef GOMP_SELF_SPECS 841 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}" 842 #endif 843 844 /* Likewise for -fgnu-tm. */ 845 #ifndef GTM_SELF_SPECS 846 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}" 847 #endif 848 849 static const char *const driver_self_specs[] = { 850 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns", 851 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS 852 }; 853 854 #ifndef OPTION_DEFAULT_SPECS 855 #define OPTION_DEFAULT_SPECS { "", "" } 856 #endif 857 858 struct default_spec 859 { 860 const char *name; 861 const char *spec; 862 }; 863 864 static const struct default_spec 865 option_default_specs[] = { OPTION_DEFAULT_SPECS }; 866 867 struct user_specs 868 { 869 struct user_specs *next; 870 const char *filename; 871 }; 872 873 static struct user_specs *user_specs_head, *user_specs_tail; 874 875 876 /* Record the mapping from file suffixes for compilation specs. */ 877 878 struct compiler 879 { 880 const char *suffix; /* Use this compiler for input files 881 whose names end in this suffix. */ 882 883 const char *spec; /* To use this compiler, run this spec. */ 884 885 const char *cpp_spec; /* If non-NULL, substitute this spec 886 for `%C', rather than the usual 887 cpp_spec. */ 888 const int combinable; /* If nonzero, compiler can deal with 889 multiple source files at once (IMA). */ 890 const int needs_preprocessing; /* If nonzero, source files need to 891 be run through a preprocessor. */ 892 }; 893 894 /* Pointer to a vector of `struct compiler' that gives the spec for 895 compiling a file, based on its suffix. 896 A file that does not end in any of these suffixes will be passed 897 unchanged to the loader and nothing else will be done to it. 898 899 An entry containing two 0s is used to terminate the vector. 900 901 If multiple entries match a file, the last matching one is used. */ 902 903 static struct compiler *compilers; 904 905 /* Number of entries in `compilers', not counting the null terminator. */ 906 907 static int n_compilers; 908 909 /* The default list of file name suffixes and their compilation specs. */ 910 911 static const struct compiler default_compilers[] = 912 { 913 /* Add lists of suffixes of known languages here. If those languages 914 were not present when we built the driver, we will hit these copies 915 and be given a more meaningful error than "file not used since 916 linking is not done". */ 917 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0}, 918 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0}, 919 {".mii", "#Objective-C++", 0, 0, 0}, 920 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0}, 921 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0}, 922 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0}, 923 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0}, 924 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0}, 925 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0}, 926 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0}, 927 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0}, 928 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0}, 929 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0}, 930 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0}, 931 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0}, 932 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0}, 933 {".r", "#Ratfor", 0, 0, 0}, 934 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0}, 935 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0}, 936 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0}, 937 {".go", "#Go", 0, 1, 0}, 938 /* Next come the entries for C. */ 939 {".c", "@c", 0, 0, 1}, 940 {"@c", 941 /* cc1 has an integrated ISO C preprocessor. We should invoke the 942 external preprocessor if -save-temps is given. */ 943 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ 944 %{!E:%{!M:%{!MM:\ 945 %{traditional:\ 946 %eGNU C no longer supports -traditional without -E}\ 947 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ 948 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ 949 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ 950 %(cc1_options)}\ 951 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ 952 cc1 %(cpp_unique_options) %(cc1_options)}}}\ 953 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1}, 954 {"-", 955 "%{!E:%e-E or -x required when input is from standard input}\ 956 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0}, 957 {".h", "@c-header", 0, 0, 0}, 958 {"@c-header", 959 /* cc1 has an integrated ISO C preprocessor. We should invoke the 960 external preprocessor if -save-temps is given. */ 961 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ 962 %{!E:%{!M:%{!MM:\ 963 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ 964 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ 965 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ 966 %(cc1_options)\ 967 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\ 968 %W{o*:--output-pch=%*}}%V}\ 969 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ 970 cc1 %(cpp_unique_options) %(cc1_options)\ 971 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\ 972 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0}, 973 {".i", "@cpp-output", 0, 0, 0}, 974 {"@cpp-output", 975 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0}, 976 {".s", "@assembler", 0, 0, 0}, 977 {"@assembler", 978 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0}, 979 {".sx", "@assembler-with-cpp", 0, 0, 0}, 980 {".S", "@assembler-with-cpp", 0, 0, 0}, 981 {"@assembler-with-cpp", 982 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT 983 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ 984 %{E|M|MM:%(cpp_debug_options)}\ 985 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ 986 as %(asm_debug) %(asm_options) %|.s %A }}}}" 987 #else 988 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ 989 %{E|M|MM:%(cpp_debug_options)}\ 990 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ 991 as %(asm_debug) %(asm_options) %m.s %A }}}}" 992 #endif 993 , 0, 0, 0}, 994 995 #include "specs.h" 996 /* Mark end of table. */ 997 {0, 0, 0, 0, 0} 998 }; 999 1000 /* Number of elements in default_compilers, not counting the terminator. */ 1001 1002 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1; 1003 1004 typedef char *char_p; /* For DEF_VEC_P. */ 1005 DEF_VEC_P(char_p); 1006 DEF_VEC_ALLOC_P(char_p,heap); 1007 1008 /* A vector of options to give to the linker. 1009 These options are accumulated by %x, 1010 and substituted into the linker command with %X. */ 1011 static VEC(char_p,heap) *linker_options; 1012 1013 /* A vector of options to give to the assembler. 1014 These options are accumulated by -Wa, 1015 and substituted into the assembler command with %Y. */ 1016 static VEC(char_p,heap) *assembler_options; 1017 1018 /* A vector of options to give to the preprocessor. 1019 These options are accumulated by -Wp, 1020 and substituted into the preprocessor command with %Z. */ 1021 static VEC(char_p,heap) *preprocessor_options; 1022 1023 static char * 1024 skip_whitespace (char *p) 1025 { 1026 while (1) 1027 { 1028 /* A fully-blank line is a delimiter in the SPEC file and shouldn't 1029 be considered whitespace. */ 1030 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n') 1031 return p + 1; 1032 else if (*p == '\n' || *p == ' ' || *p == '\t') 1033 p++; 1034 else if (*p == '#') 1035 { 1036 while (*p != '\n') 1037 p++; 1038 p++; 1039 } 1040 else 1041 break; 1042 } 1043 1044 return p; 1045 } 1046 /* Structures to keep track of prefixes to try when looking for files. */ 1047 1048 struct prefix_list 1049 { 1050 const char *prefix; /* String to prepend to the path. */ 1051 struct prefix_list *next; /* Next in linked list. */ 1052 int require_machine_suffix; /* Don't use without machine_suffix. */ 1053 /* 2 means try both machine_suffix and just_machine_suffix. */ 1054 int priority; /* Sort key - priority within list. */ 1055 int os_multilib; /* 1 if OS multilib scheme should be used, 1056 0 for GCC multilib scheme. */ 1057 }; 1058 1059 struct path_prefix 1060 { 1061 struct prefix_list *plist; /* List of prefixes to try */ 1062 int max_len; /* Max length of a prefix in PLIST */ 1063 const char *name; /* Name of this list (used in config stuff) */ 1064 }; 1065 1066 /* List of prefixes to try when looking for executables. */ 1067 1068 static struct path_prefix exec_prefixes = { 0, 0, "exec" }; 1069 1070 /* List of prefixes to try when looking for startup (crt0) files. */ 1071 1072 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" }; 1073 1074 /* List of prefixes to try when looking for include files. */ 1075 1076 static struct path_prefix include_prefixes = { 0, 0, "include" }; 1077 1078 /* Suffix to attach to directories searched for commands. 1079 This looks like `MACHINE/VERSION/'. */ 1080 1081 static const char *machine_suffix = 0; 1082 1083 /* Suffix to attach to directories searched for commands. 1084 This is just `MACHINE/'. */ 1085 1086 static const char *just_machine_suffix = 0; 1087 1088 /* Adjusted value of GCC_EXEC_PREFIX envvar. */ 1089 1090 static const char *gcc_exec_prefix; 1091 1092 /* Adjusted value of standard_libexec_prefix. */ 1093 1094 static const char *gcc_libexec_prefix; 1095 1096 /* Default prefixes to attach to command names. */ 1097 1098 #ifndef STANDARD_STARTFILE_PREFIX_1 1099 #define STANDARD_STARTFILE_PREFIX_1 "/lib/" 1100 #endif 1101 #ifndef STANDARD_STARTFILE_PREFIX_2 1102 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/" 1103 #endif 1104 1105 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */ 1106 #undef MD_EXEC_PREFIX 1107 #undef MD_STARTFILE_PREFIX 1108 #undef MD_STARTFILE_PREFIX_1 1109 #endif 1110 1111 /* If no prefixes defined, use the null string, which will disable them. */ 1112 #ifndef MD_EXEC_PREFIX 1113 #define MD_EXEC_PREFIX "" 1114 #endif 1115 #ifndef MD_STARTFILE_PREFIX 1116 #define MD_STARTFILE_PREFIX "" 1117 #endif 1118 #ifndef MD_STARTFILE_PREFIX_1 1119 #define MD_STARTFILE_PREFIX_1 "" 1120 #endif 1121 1122 /* These directories are locations set at configure-time based on the 1123 --prefix option provided to configure. Their initializers are 1124 defined in Makefile.in. These paths are not *directly* used when 1125 gcc_exec_prefix is set because, in that case, we know where the 1126 compiler has been installed, and use paths relative to that 1127 location instead. */ 1128 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX; 1129 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX; 1130 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX; 1131 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; 1132 1133 /* For native compilers, these are well-known paths containing 1134 components that may be provided by the system. For cross 1135 compilers, these paths are not used. */ 1136 static const char *md_exec_prefix = MD_EXEC_PREFIX; 1137 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX; 1138 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; 1139 static const char *const standard_startfile_prefix_1 1140 = STANDARD_STARTFILE_PREFIX_1; 1141 static const char *const standard_startfile_prefix_2 1142 = STANDARD_STARTFILE_PREFIX_2; 1143 1144 /* A relative path to be used in finding the location of tools 1145 relative to the driver. */ 1146 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX; 1147 1148 /* Subdirectory to use for locating libraries. Set by 1149 set_multilib_dir based on the compilation options. */ 1150 1151 static const char *multilib_dir; 1152 1153 /* Subdirectory to use for locating libraries in OS conventions. Set by 1154 set_multilib_dir based on the compilation options. */ 1155 1156 static const char *multilib_os_dir; 1157 1158 /* Subdirectory to use for locating libraries in multiarch conventions. Set by 1159 set_multilib_dir based on the compilation options. */ 1160 1161 static const char *multiarch_dir; 1162 1163 /* Structure to keep track of the specs that have been defined so far. 1164 These are accessed using %(specname) in a compiler or link 1165 spec. */ 1166 1167 struct spec_list 1168 { 1169 /* The following 2 fields must be first */ 1170 /* to allow EXTRA_SPECS to be initialized */ 1171 const char *name; /* name of the spec. */ 1172 const char *ptr; /* available ptr if no static pointer */ 1173 1174 /* The following fields are not initialized */ 1175 /* by EXTRA_SPECS */ 1176 const char **ptr_spec; /* pointer to the spec itself. */ 1177 struct spec_list *next; /* Next spec in linked list. */ 1178 int name_len; /* length of the name */ 1179 int alloc_p; /* whether string was allocated */ 1180 }; 1181 1182 #define INIT_STATIC_SPEC(NAME,PTR) \ 1183 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 } 1184 1185 /* List of statically defined specs. */ 1186 static struct spec_list static_specs[] = 1187 { 1188 INIT_STATIC_SPEC ("asm", &asm_spec), 1189 INIT_STATIC_SPEC ("asm_debug", &asm_debug), 1190 INIT_STATIC_SPEC ("asm_final", &asm_final_spec), 1191 INIT_STATIC_SPEC ("asm_options", &asm_options), 1192 INIT_STATIC_SPEC ("invoke_as", &invoke_as), 1193 INIT_STATIC_SPEC ("cpp", &cpp_spec), 1194 INIT_STATIC_SPEC ("cpp_options", &cpp_options), 1195 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options), 1196 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options), 1197 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp), 1198 INIT_STATIC_SPEC ("cc1", &cc1_spec), 1199 INIT_STATIC_SPEC ("cc1_options", &cc1_options), 1200 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec), 1201 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec), 1202 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec), 1203 INIT_STATIC_SPEC ("endfile", &endfile_spec), 1204 INIT_STATIC_SPEC ("link", &link_spec), 1205 INIT_STATIC_SPEC ("lib", &lib_spec), 1206 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec), 1207 INIT_STATIC_SPEC ("mflib", &mflib_spec), 1208 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec), 1209 INIT_STATIC_SPEC ("libgcc", &libgcc_spec), 1210 INIT_STATIC_SPEC ("startfile", &startfile_spec), 1211 INIT_STATIC_SPEC ("cross_compile", &cross_compile), 1212 INIT_STATIC_SPEC ("version", &compiler_version), 1213 INIT_STATIC_SPEC ("multilib", &multilib_select), 1214 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults), 1215 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra), 1216 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches), 1217 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions), 1218 INIT_STATIC_SPEC ("multilib_options", &multilib_options), 1219 INIT_STATIC_SPEC ("linker", &linker_name_spec), 1220 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec), 1221 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec), 1222 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec), 1223 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec), 1224 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix), 1225 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix), 1226 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1), 1227 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec), 1228 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec), 1229 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec), 1230 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec), 1231 INIT_STATIC_SPEC ("self_spec", &self_spec), 1232 }; 1233 1234 #ifdef EXTRA_SPECS /* additional specs needed */ 1235 /* Structure to keep track of just the first two args of a spec_list. 1236 That is all that the EXTRA_SPECS macro gives us. */ 1237 struct spec_list_1 1238 { 1239 const char *const name; 1240 const char *const ptr; 1241 }; 1242 1243 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS }; 1244 static struct spec_list *extra_specs = (struct spec_list *) 0; 1245 #endif 1246 1247 /* List of dynamically allocates specs that have been defined so far. */ 1248 1249 static struct spec_list *specs = (struct spec_list *) 0; 1250 1251 /* List of static spec functions. */ 1252 1253 static const struct spec_function static_spec_functions[] = 1254 { 1255 { "getenv", getenv_spec_function }, 1256 { "if-exists", if_exists_spec_function }, 1257 { "if-exists-else", if_exists_else_spec_function }, 1258 { "replace-outfile", replace_outfile_spec_function }, 1259 { "remove-outfile", remove_outfile_spec_function }, 1260 { "version-compare", version_compare_spec_function }, 1261 { "include", include_spec_function }, 1262 { "find-file", find_file_spec_function }, 1263 { "find-plugindir", find_plugindir_spec_function }, 1264 { "print-asm-header", print_asm_header_spec_function }, 1265 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function }, 1266 { "compare-debug-self-opt", compare_debug_self_opt_spec_function }, 1267 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function }, 1268 { "pass-through-libs", pass_through_libs_spec_func }, 1269 #ifdef EXTRA_SPEC_FUNCTIONS 1270 EXTRA_SPEC_FUNCTIONS 1271 #endif 1272 { 0, 0 } 1273 }; 1274 1275 static int processing_spec_function; 1276 1277 /* Add appropriate libgcc specs to OBSTACK, taking into account 1278 various permutations of -shared-libgcc, -shared, and such. */ 1279 1280 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 1281 1282 #ifndef USE_LD_AS_NEEDED 1283 #define USE_LD_AS_NEEDED 0 1284 #endif 1285 1286 static void 1287 init_gcc_specs (struct obstack *obstack, const char *shared_name, 1288 const char *static_name, const char *eh_name) 1289 { 1290 char *buf; 1291 1292 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}" 1293 "%{!static:%{!static-libgcc:" 1294 #if USE_LD_AS_NEEDED 1295 "%{!shared-libgcc:", 1296 static_name, " --as-needed ", shared_name, " --no-as-needed" 1297 "}" 1298 "%{shared-libgcc:", 1299 shared_name, "%{!shared: ", static_name, "}" 1300 "}" 1301 #else 1302 "%{!shared:" 1303 "%{!shared-libgcc:", static_name, " ", eh_name, "}" 1304 "%{shared-libgcc:", shared_name, " ", static_name, "}" 1305 "}" 1306 #ifdef LINK_EH_SPEC 1307 "%{shared:" 1308 "%{shared-libgcc:", shared_name, "}" 1309 "%{!shared-libgcc:", static_name, "}" 1310 "}" 1311 #else 1312 "%{shared:", shared_name, "}" 1313 #endif 1314 #endif 1315 "}}", NULL); 1316 1317 obstack_grow (obstack, buf, strlen (buf)); 1318 free (buf); 1319 } 1320 #endif /* ENABLE_SHARED_LIBGCC */ 1321 1322 /* Initialize the specs lookup routines. */ 1323 1324 static void 1325 init_spec (void) 1326 { 1327 struct spec_list *next = (struct spec_list *) 0; 1328 struct spec_list *sl = (struct spec_list *) 0; 1329 int i; 1330 1331 if (specs) 1332 return; /* Already initialized. */ 1333 1334 if (verbose_flag) 1335 fnotice (stderr, "Using built-in specs.\n"); 1336 1337 #ifdef EXTRA_SPECS 1338 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1)); 1339 1340 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--) 1341 { 1342 sl = &extra_specs[i]; 1343 sl->name = extra_specs_1[i].name; 1344 sl->ptr = extra_specs_1[i].ptr; 1345 sl->next = next; 1346 sl->name_len = strlen (sl->name); 1347 sl->ptr_spec = &sl->ptr; 1348 next = sl; 1349 } 1350 #endif 1351 1352 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) 1353 { 1354 sl = &static_specs[i]; 1355 sl->next = next; 1356 next = sl; 1357 } 1358 1359 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 1360 /* ??? If neither -shared-libgcc nor --static-libgcc was 1361 seen, then we should be making an educated guess. Some proposed 1362 heuristics for ELF include: 1363 1364 (1) If "-Wl,--export-dynamic", then it's a fair bet that the 1365 program will be doing dynamic loading, which will likely 1366 need the shared libgcc. 1367 1368 (2) If "-ldl", then it's also a fair bet that we're doing 1369 dynamic loading. 1370 1371 (3) For each ET_DYN we're linking against (either through -lfoo 1372 or /some/path/foo.so), check to see whether it or one of 1373 its dependencies depends on a shared libgcc. 1374 1375 (4) If "-shared" 1376 1377 If the runtime is fixed to look for program headers instead 1378 of calling __register_frame_info at all, for each object, 1379 use the shared libgcc if any EH symbol referenced. 1380 1381 If crtstuff is fixed to not invoke __register_frame_info 1382 automatically, for each object, use the shared libgcc if 1383 any non-empty unwind section found. 1384 1385 Doing any of this probably requires invoking an external program to 1386 do the actual object file scanning. */ 1387 { 1388 const char *p = libgcc_spec; 1389 int in_sep = 1; 1390 1391 /* Transform the extant libgcc_spec into one that uses the shared libgcc 1392 when given the proper command line arguments. */ 1393 while (*p) 1394 { 1395 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0) 1396 { 1397 init_gcc_specs (&obstack, 1398 "-lgcc_s" 1399 #ifdef USE_LIBUNWIND_EXCEPTIONS 1400 " -lunwind" 1401 #endif 1402 , 1403 "-lgcc", 1404 "-lgcc_eh" 1405 #ifdef USE_LIBUNWIND_EXCEPTIONS 1406 # ifdef HAVE_LD_STATIC_DYNAMIC 1407 " %{!static:" LD_STATIC_OPTION "} -lunwind" 1408 " %{!static:" LD_DYNAMIC_OPTION "}" 1409 # else 1410 " -lunwind" 1411 # endif 1412 #endif 1413 ); 1414 1415 p += 5; 1416 in_sep = 0; 1417 } 1418 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0) 1419 { 1420 /* Ug. We don't know shared library extensions. Hope that 1421 systems that use this form don't do shared libraries. */ 1422 init_gcc_specs (&obstack, 1423 "-lgcc_s", 1424 "libgcc.a%s", 1425 "libgcc_eh.a%s" 1426 #ifdef USE_LIBUNWIND_EXCEPTIONS 1427 " -lunwind" 1428 #endif 1429 ); 1430 p += 10; 1431 in_sep = 0; 1432 } 1433 else 1434 { 1435 obstack_1grow (&obstack, *p); 1436 in_sep = (*p == ' '); 1437 p += 1; 1438 } 1439 } 1440 1441 obstack_1grow (&obstack, '\0'); 1442 libgcc_spec = XOBFINISH (&obstack, const char *); 1443 } 1444 #endif 1445 #ifdef USE_AS_TRADITIONAL_FORMAT 1446 /* Prepend "--traditional-format" to whatever asm_spec we had before. */ 1447 { 1448 static const char tf[] = "--traditional-format "; 1449 obstack_grow (&obstack, tf, sizeof(tf) - 1); 1450 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); 1451 asm_spec = XOBFINISH (&obstack, const char *); 1452 } 1453 #endif 1454 1455 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \ 1456 defined LINKER_HASH_STYLE 1457 # ifdef LINK_BUILDID_SPEC 1458 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */ 1459 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1); 1460 # endif 1461 # ifdef LINK_EH_SPEC 1462 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */ 1463 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1); 1464 # endif 1465 # ifdef LINKER_HASH_STYLE 1466 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had 1467 before. */ 1468 { 1469 static const char hash_style[] = "--hash-style="; 1470 obstack_grow (&obstack, hash_style, sizeof(hash_style) - 1); 1471 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof(LINKER_HASH_STYLE) - 1); 1472 obstack_1grow (&obstack, ' '); 1473 } 1474 # endif 1475 obstack_grow0 (&obstack, link_spec, strlen (link_spec)); 1476 link_spec = XOBFINISH (&obstack, const char *); 1477 #endif 1478 1479 specs = sl; 1480 } 1481 1482 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is 1483 removed; If the spec starts with a + then SPEC is added to the end of the 1484 current spec. */ 1485 1486 static void 1487 set_spec (const char *name, const char *spec) 1488 { 1489 struct spec_list *sl; 1490 const char *old_spec; 1491 int name_len = strlen (name); 1492 int i; 1493 1494 /* If this is the first call, initialize the statically allocated specs. */ 1495 if (!specs) 1496 { 1497 struct spec_list *next = (struct spec_list *) 0; 1498 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) 1499 { 1500 sl = &static_specs[i]; 1501 sl->next = next; 1502 next = sl; 1503 } 1504 specs = sl; 1505 } 1506 1507 /* See if the spec already exists. */ 1508 for (sl = specs; sl; sl = sl->next) 1509 if (name_len == sl->name_len && !strcmp (sl->name, name)) 1510 break; 1511 1512 if (!sl) 1513 { 1514 /* Not found - make it. */ 1515 sl = XNEW (struct spec_list); 1516 sl->name = xstrdup (name); 1517 sl->name_len = name_len; 1518 sl->ptr_spec = &sl->ptr; 1519 sl->alloc_p = 0; 1520 *(sl->ptr_spec) = ""; 1521 sl->next = specs; 1522 specs = sl; 1523 } 1524 1525 old_spec = *(sl->ptr_spec); 1526 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1])) 1527 ? concat (old_spec, spec + 1, NULL) 1528 : xstrdup (spec)); 1529 1530 #ifdef DEBUG_SPECS 1531 if (verbose_flag) 1532 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec)); 1533 #endif 1534 1535 /* Free the old spec. */ 1536 if (old_spec && sl->alloc_p) 1537 free (CONST_CAST(char *, old_spec)); 1538 1539 sl->alloc_p = 1; 1540 } 1541 1542 /* Accumulate a command (program name and args), and run it. */ 1543 1544 typedef const char *const_char_p; /* For DEF_VEC_P. */ 1545 DEF_VEC_P(const_char_p); 1546 DEF_VEC_ALLOC_P(const_char_p,heap); 1547 1548 /* Vector of pointers to arguments in the current line of specifications. */ 1549 1550 static VEC(const_char_p,heap) *argbuf; 1551 1552 /* Position in the argbuf vector containing the name of the output file 1553 (the value associated with the "-o" flag). */ 1554 1555 static int have_o_argbuf_index = 0; 1556 1557 /* Were the options -c, -S or -E passed. */ 1558 static int have_c = 0; 1559 1560 /* Was the option -o passed. */ 1561 static int have_o = 0; 1562 1563 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated 1564 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for 1565 it here. */ 1566 1567 static struct temp_name { 1568 const char *suffix; /* suffix associated with the code. */ 1569 int length; /* strlen (suffix). */ 1570 int unique; /* Indicates whether %g or %u/%U was used. */ 1571 const char *filename; /* associated filename. */ 1572 int filename_length; /* strlen (filename). */ 1573 struct temp_name *next; 1574 } *temp_names; 1575 1576 /* Number of commands executed so far. */ 1577 1578 static int execution_count; 1579 1580 /* Number of commands that exited with a signal. */ 1581 1582 static int signal_count; 1583 1584 /* Allocate the argument vector. */ 1585 1586 static void 1587 alloc_args (void) 1588 { 1589 argbuf = VEC_alloc (const_char_p, heap, 10); 1590 } 1591 1592 /* Clear out the vector of arguments (after a command is executed). */ 1593 1594 static void 1595 clear_args (void) 1596 { 1597 VEC_truncate (const_char_p, argbuf, 0); 1598 } 1599 1600 /* Add one argument to the vector at the end. 1601 This is done when a space is seen or at the end of the line. 1602 If DELETE_ALWAYS is nonzero, the arg is a filename 1603 and the file should be deleted eventually. 1604 If DELETE_FAILURE is nonzero, the arg is a filename 1605 and the file should be deleted if this compilation fails. */ 1606 1607 static void 1608 store_arg (const char *arg, int delete_always, int delete_failure) 1609 { 1610 VEC_safe_push (const_char_p, heap, argbuf, arg); 1611 1612 if (strcmp (arg, "-o") == 0) 1613 have_o_argbuf_index = VEC_length (const_char_p, argbuf); 1614 if (delete_always || delete_failure) 1615 { 1616 const char *p; 1617 /* If the temporary file we should delete is specified as 1618 part of a joined argument extract the filename. */ 1619 if (arg[0] == '-' 1620 && (p = strrchr (arg, '='))) 1621 arg = p + 1; 1622 record_temp_file (arg, delete_always, delete_failure); 1623 } 1624 } 1625 1626 /* Load specs from a file name named FILENAME, replacing occurrences of 1627 various different types of line-endings, \r\n, \n\r and just \r, with 1628 a single \n. */ 1629 1630 static char * 1631 load_specs (const char *filename) 1632 { 1633 int desc; 1634 int readlen; 1635 struct stat statbuf; 1636 char *buffer; 1637 char *buffer_p; 1638 char *specs; 1639 char *specs_p; 1640 1641 if (verbose_flag) 1642 fnotice (stderr, "Reading specs from %s\n", filename); 1643 1644 /* Open and stat the file. */ 1645 desc = open (filename, O_RDONLY, 0); 1646 if (desc < 0) 1647 pfatal_with_name (filename); 1648 if (stat (filename, &statbuf) < 0) 1649 pfatal_with_name (filename); 1650 1651 /* Read contents of file into BUFFER. */ 1652 buffer = XNEWVEC (char, statbuf.st_size + 1); 1653 readlen = read (desc, buffer, (unsigned) statbuf.st_size); 1654 if (readlen < 0) 1655 pfatal_with_name (filename); 1656 buffer[readlen] = 0; 1657 close (desc); 1658 1659 specs = XNEWVEC (char, readlen + 1); 1660 specs_p = specs; 1661 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++) 1662 { 1663 int skip = 0; 1664 char c = *buffer_p; 1665 if (c == '\r') 1666 { 1667 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */ 1668 skip = 1; 1669 else if (*(buffer_p + 1) == '\n') /* \r\n */ 1670 skip = 1; 1671 else /* \r */ 1672 c = '\n'; 1673 } 1674 if (! skip) 1675 *specs_p++ = c; 1676 } 1677 *specs_p = '\0'; 1678 1679 free (buffer); 1680 return (specs); 1681 } 1682 1683 /* Read compilation specs from a file named FILENAME, 1684 replacing the default ones. 1685 1686 A suffix which starts with `*' is a definition for 1687 one of the machine-specific sub-specs. The "suffix" should be 1688 *asm, *cc1, *cpp, *link, *startfile, etc. 1689 The corresponding spec is stored in asm_spec, etc., 1690 rather than in the `compilers' vector. 1691 1692 Anything invalid in the file is a fatal error. */ 1693 1694 static void 1695 read_specs (const char *filename, int main_p) 1696 { 1697 char *buffer; 1698 char *p; 1699 1700 buffer = load_specs (filename); 1701 1702 /* Scan BUFFER for specs, putting them in the vector. */ 1703 p = buffer; 1704 while (1) 1705 { 1706 char *suffix; 1707 char *spec; 1708 char *in, *out, *p1, *p2, *p3; 1709 1710 /* Advance P in BUFFER to the next nonblank nocomment line. */ 1711 p = skip_whitespace (p); 1712 if (*p == 0) 1713 break; 1714 1715 /* Is this a special command that starts with '%'? */ 1716 /* Don't allow this for the main specs file, since it would 1717 encourage people to overwrite it. */ 1718 if (*p == '%' && !main_p) 1719 { 1720 p1 = p; 1721 while (*p && *p != '\n') 1722 p++; 1723 1724 /* Skip '\n'. */ 1725 p++; 1726 1727 if (!strncmp (p1, "%include", sizeof ("%include") - 1) 1728 && (p1[sizeof "%include" - 1] == ' ' 1729 || p1[sizeof "%include" - 1] == '\t')) 1730 { 1731 char *new_filename; 1732 1733 p1 += sizeof ("%include"); 1734 while (*p1 == ' ' || *p1 == '\t') 1735 p1++; 1736 1737 if (*p1++ != '<' || p[-2] != '>') 1738 fatal_error ("specs %%include syntax malformed after " 1739 "%ld characters", 1740 (long) (p1 - buffer + 1)); 1741 1742 p[-2] = '\0'; 1743 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); 1744 read_specs (new_filename ? new_filename : p1, FALSE); 1745 continue; 1746 } 1747 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1) 1748 && (p1[sizeof "%include_noerr" - 1] == ' ' 1749 || p1[sizeof "%include_noerr" - 1] == '\t')) 1750 { 1751 char *new_filename; 1752 1753 p1 += sizeof "%include_noerr"; 1754 while (*p1 == ' ' || *p1 == '\t') 1755 p1++; 1756 1757 if (*p1++ != '<' || p[-2] != '>') 1758 fatal_error ("specs %%include syntax malformed after " 1759 "%ld characters", 1760 (long) (p1 - buffer + 1)); 1761 1762 p[-2] = '\0'; 1763 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); 1764 if (new_filename) 1765 read_specs (new_filename, FALSE); 1766 else if (verbose_flag) 1767 fnotice (stderr, "could not find specs file %s\n", p1); 1768 continue; 1769 } 1770 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1) 1771 && (p1[sizeof "%rename" - 1] == ' ' 1772 || p1[sizeof "%rename" - 1] == '\t')) 1773 { 1774 int name_len; 1775 struct spec_list *sl; 1776 struct spec_list *newsl; 1777 1778 /* Get original name. */ 1779 p1 += sizeof "%rename"; 1780 while (*p1 == ' ' || *p1 == '\t') 1781 p1++; 1782 1783 if (! ISALPHA ((unsigned char) *p1)) 1784 fatal_error ("specs %%rename syntax malformed after " 1785 "%ld characters", 1786 (long) (p1 - buffer)); 1787 1788 p2 = p1; 1789 while (*p2 && !ISSPACE ((unsigned char) *p2)) 1790 p2++; 1791 1792 if (*p2 != ' ' && *p2 != '\t') 1793 fatal_error ("specs %%rename syntax malformed after " 1794 "%ld characters", 1795 (long) (p2 - buffer)); 1796 1797 name_len = p2 - p1; 1798 *p2++ = '\0'; 1799 while (*p2 == ' ' || *p2 == '\t') 1800 p2++; 1801 1802 if (! ISALPHA ((unsigned char) *p2)) 1803 fatal_error ("specs %%rename syntax malformed after " 1804 "%ld characters", 1805 (long) (p2 - buffer)); 1806 1807 /* Get new spec name. */ 1808 p3 = p2; 1809 while (*p3 && !ISSPACE ((unsigned char) *p3)) 1810 p3++; 1811 1812 if (p3 != p - 1) 1813 fatal_error ("specs %%rename syntax malformed after " 1814 "%ld characters", 1815 (long) (p3 - buffer)); 1816 *p3 = '\0'; 1817 1818 for (sl = specs; sl; sl = sl->next) 1819 if (name_len == sl->name_len && !strcmp (sl->name, p1)) 1820 break; 1821 1822 if (!sl) 1823 fatal_error ("specs %s spec was not found to be renamed", p1); 1824 1825 if (strcmp (p1, p2) == 0) 1826 continue; 1827 1828 for (newsl = specs; newsl; newsl = newsl->next) 1829 if (strcmp (newsl->name, p2) == 0) 1830 fatal_error ("%s: attempt to rename spec %qs to " 1831 "already defined spec %qs", 1832 filename, p1, p2); 1833 1834 if (verbose_flag) 1835 { 1836 fnotice (stderr, "rename spec %s to %s\n", p1, p2); 1837 #ifdef DEBUG_SPECS 1838 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec)); 1839 #endif 1840 } 1841 1842 set_spec (p2, *(sl->ptr_spec)); 1843 if (sl->alloc_p) 1844 free (CONST_CAST (char *, *(sl->ptr_spec))); 1845 1846 *(sl->ptr_spec) = ""; 1847 sl->alloc_p = 0; 1848 continue; 1849 } 1850 else 1851 fatal_error ("specs unknown %% command after %ld characters", 1852 (long) (p1 - buffer)); 1853 } 1854 1855 /* Find the colon that should end the suffix. */ 1856 p1 = p; 1857 while (*p1 && *p1 != ':' && *p1 != '\n') 1858 p1++; 1859 1860 /* The colon shouldn't be missing. */ 1861 if (*p1 != ':') 1862 fatal_error ("specs file malformed after %ld characters", 1863 (long) (p1 - buffer)); 1864 1865 /* Skip back over trailing whitespace. */ 1866 p2 = p1; 1867 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) 1868 p2--; 1869 1870 /* Copy the suffix to a string. */ 1871 suffix = save_string (p, p2 - p); 1872 /* Find the next line. */ 1873 p = skip_whitespace (p1 + 1); 1874 if (p[1] == 0) 1875 fatal_error ("specs file malformed after %ld characters", 1876 (long) (p - buffer)); 1877 1878 p1 = p; 1879 /* Find next blank line or end of string. */ 1880 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0'))) 1881 p1++; 1882 1883 /* Specs end at the blank line and do not include the newline. */ 1884 spec = save_string (p, p1 - p); 1885 p = p1; 1886 1887 /* Delete backslash-newline sequences from the spec. */ 1888 in = spec; 1889 out = spec; 1890 while (*in != 0) 1891 { 1892 if (in[0] == '\\' && in[1] == '\n') 1893 in += 2; 1894 else if (in[0] == '#') 1895 while (*in && *in != '\n') 1896 in++; 1897 1898 else 1899 *out++ = *in++; 1900 } 1901 *out = 0; 1902 1903 if (suffix[0] == '*') 1904 { 1905 if (! strcmp (suffix, "*link_command")) 1906 link_command_spec = spec; 1907 else 1908 set_spec (suffix + 1, spec); 1909 } 1910 else 1911 { 1912 /* Add this pair to the vector. */ 1913 compilers 1914 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2); 1915 1916 compilers[n_compilers].suffix = suffix; 1917 compilers[n_compilers].spec = spec; 1918 n_compilers++; 1919 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]); 1920 } 1921 1922 if (*suffix == 0) 1923 link_command_spec = spec; 1924 } 1925 1926 if (link_command_spec == 0) 1927 fatal_error ("spec file has no spec for linking"); 1928 } 1929 1930 /* Record the names of temporary files we tell compilers to write, 1931 and delete them at the end of the run. */ 1932 1933 /* This is the common prefix we use to make temp file names. 1934 It is chosen once for each run of this program. 1935 It is substituted into a spec by %g or %j. 1936 Thus, all temp file names contain this prefix. 1937 In practice, all temp file names start with this prefix. 1938 1939 This prefix comes from the envvar TMPDIR if it is defined; 1940 otherwise, from the P_tmpdir macro if that is defined; 1941 otherwise, in /usr/tmp or /tmp; 1942 or finally the current directory if all else fails. */ 1943 1944 static const char *temp_filename; 1945 1946 /* Length of the prefix. */ 1947 1948 static int temp_filename_length; 1949 1950 /* Define the list of temporary files to delete. */ 1951 1952 struct temp_file 1953 { 1954 const char *name; 1955 struct temp_file *next; 1956 }; 1957 1958 /* Queue of files to delete on success or failure of compilation. */ 1959 static struct temp_file *always_delete_queue; 1960 /* Queue of files to delete on failure of compilation. */ 1961 static struct temp_file *failure_delete_queue; 1962 1963 /* Record FILENAME as a file to be deleted automatically. 1964 ALWAYS_DELETE nonzero means delete it if all compilation succeeds; 1965 otherwise delete it in any case. 1966 FAIL_DELETE nonzero means delete it if a compilation step fails; 1967 otherwise delete it in any case. */ 1968 1969 void 1970 record_temp_file (const char *filename, int always_delete, int fail_delete) 1971 { 1972 char *const name = xstrdup (filename); 1973 1974 if (always_delete) 1975 { 1976 struct temp_file *temp; 1977 for (temp = always_delete_queue; temp; temp = temp->next) 1978 if (! filename_cmp (name, temp->name)) 1979 goto already1; 1980 1981 temp = XNEW (struct temp_file); 1982 temp->next = always_delete_queue; 1983 temp->name = name; 1984 always_delete_queue = temp; 1985 1986 already1:; 1987 } 1988 1989 if (fail_delete) 1990 { 1991 struct temp_file *temp; 1992 for (temp = failure_delete_queue; temp; temp = temp->next) 1993 if (! filename_cmp (name, temp->name)) 1994 goto already2; 1995 1996 temp = XNEW (struct temp_file); 1997 temp->next = failure_delete_queue; 1998 temp->name = name; 1999 failure_delete_queue = temp; 2000 2001 already2:; 2002 } 2003 } 2004 2005 /* Delete all the temporary files whose names we previously recorded. */ 2006 2007 #ifndef DELETE_IF_ORDINARY 2008 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \ 2009 do \ 2010 { \ 2011 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \ 2012 if (unlink (NAME) < 0) \ 2013 if (VERBOSE_FLAG) \ 2014 perror_with_name (NAME); \ 2015 } while (0) 2016 #endif 2017 2018 static void 2019 delete_if_ordinary (const char *name) 2020 { 2021 struct stat st; 2022 #ifdef DEBUG 2023 int i, c; 2024 2025 printf ("Delete %s? (y or n) ", name); 2026 fflush (stdout); 2027 i = getchar (); 2028 if (i != '\n') 2029 while ((c = getchar ()) != '\n' && c != EOF) 2030 ; 2031 2032 if (i == 'y' || i == 'Y') 2033 #endif /* DEBUG */ 2034 DELETE_IF_ORDINARY (name, st, verbose_flag); 2035 } 2036 2037 static void 2038 delete_temp_files (void) 2039 { 2040 struct temp_file *temp; 2041 2042 for (temp = always_delete_queue; temp; temp = temp->next) 2043 delete_if_ordinary (temp->name); 2044 always_delete_queue = 0; 2045 } 2046 2047 /* Delete all the files to be deleted on error. */ 2048 2049 static void 2050 delete_failure_queue (void) 2051 { 2052 struct temp_file *temp; 2053 2054 for (temp = failure_delete_queue; temp; temp = temp->next) 2055 delete_if_ordinary (temp->name); 2056 } 2057 2058 static void 2059 clear_failure_queue (void) 2060 { 2061 failure_delete_queue = 0; 2062 } 2063 2064 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK 2065 returns non-NULL. 2066 If DO_MULTI is true iterate over the paths twice, first with multilib 2067 suffix then without, otherwise iterate over the paths once without 2068 adding a multilib suffix. When DO_MULTI is true, some attempt is made 2069 to avoid visiting the same path twice, but we could do better. For 2070 instance, /usr/lib/../lib is considered different from /usr/lib. 2071 At least EXTRA_SPACE chars past the end of the path passed to 2072 CALLBACK are available for use by the callback. 2073 CALLBACK_INFO allows extra parameters to be passed to CALLBACK. 2074 2075 Returns the value returned by CALLBACK. */ 2076 2077 static void * 2078 for_each_path (const struct path_prefix *paths, 2079 bool do_multi, 2080 size_t extra_space, 2081 void *(*callback) (char *, void *), 2082 void *callback_info) 2083 { 2084 struct prefix_list *pl; 2085 const char *multi_dir = NULL; 2086 const char *multi_os_dir = NULL; 2087 const char *multiarch_suffix = NULL; 2088 const char *multi_suffix; 2089 const char *just_multi_suffix; 2090 char *path = NULL; 2091 void *ret = NULL; 2092 bool skip_multi_dir = false; 2093 bool skip_multi_os_dir = false; 2094 2095 multi_suffix = machine_suffix; 2096 just_multi_suffix = just_machine_suffix; 2097 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0) 2098 { 2099 multi_dir = concat (multilib_dir, dir_separator_str, NULL); 2100 multi_suffix = concat (multi_suffix, multi_dir, NULL); 2101 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL); 2102 } 2103 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0) 2104 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL); 2105 if (multiarch_dir) 2106 multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL); 2107 2108 while (1) 2109 { 2110 size_t multi_dir_len = 0; 2111 size_t multi_os_dir_len = 0; 2112 size_t multiarch_len = 0; 2113 size_t suffix_len; 2114 size_t just_suffix_len; 2115 size_t len; 2116 2117 if (multi_dir) 2118 multi_dir_len = strlen (multi_dir); 2119 if (multi_os_dir) 2120 multi_os_dir_len = strlen (multi_os_dir); 2121 if (multiarch_suffix) 2122 multiarch_len = strlen (multiarch_suffix); 2123 suffix_len = strlen (multi_suffix); 2124 just_suffix_len = strlen (just_multi_suffix); 2125 2126 if (path == NULL) 2127 { 2128 len = paths->max_len + extra_space + 1; 2129 len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len); 2130 path = XNEWVEC (char, len); 2131 } 2132 2133 for (pl = paths->plist; pl != 0; pl = pl->next) 2134 { 2135 len = strlen (pl->prefix); 2136 memcpy (path, pl->prefix, len); 2137 2138 /* Look first in MACHINE/VERSION subdirectory. */ 2139 if (!skip_multi_dir) 2140 { 2141 memcpy (path + len, multi_suffix, suffix_len + 1); 2142 ret = callback (path, callback_info); 2143 if (ret) 2144 break; 2145 } 2146 2147 /* Some paths are tried with just the machine (ie. target) 2148 subdir. This is used for finding as, ld, etc. */ 2149 if (!skip_multi_dir 2150 && pl->require_machine_suffix == 2) 2151 { 2152 memcpy (path + len, just_multi_suffix, just_suffix_len + 1); 2153 ret = callback (path, callback_info); 2154 if (ret) 2155 break; 2156 } 2157 2158 /* Now try the multiarch path. */ 2159 if (!skip_multi_dir 2160 && !pl->require_machine_suffix && multiarch_dir) 2161 { 2162 memcpy (path + len, multiarch_suffix, multiarch_len + 1); 2163 ret = callback (path, callback_info); 2164 if (ret) 2165 break; 2166 } 2167 2168 /* Now try the base path. */ 2169 if (!pl->require_machine_suffix 2170 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir)) 2171 { 2172 const char *this_multi; 2173 size_t this_multi_len; 2174 2175 if (pl->os_multilib) 2176 { 2177 this_multi = multi_os_dir; 2178 this_multi_len = multi_os_dir_len; 2179 } 2180 else 2181 { 2182 this_multi = multi_dir; 2183 this_multi_len = multi_dir_len; 2184 } 2185 2186 if (this_multi_len) 2187 memcpy (path + len, this_multi, this_multi_len + 1); 2188 else 2189 path[len] = '\0'; 2190 2191 ret = callback (path, callback_info); 2192 if (ret) 2193 break; 2194 } 2195 } 2196 if (pl) 2197 break; 2198 2199 if (multi_dir == NULL && multi_os_dir == NULL) 2200 break; 2201 2202 /* Run through the paths again, this time without multilibs. 2203 Don't repeat any we have already seen. */ 2204 if (multi_dir) 2205 { 2206 free (CONST_CAST (char *, multi_dir)); 2207 multi_dir = NULL; 2208 free (CONST_CAST (char *, multi_suffix)); 2209 multi_suffix = machine_suffix; 2210 free (CONST_CAST (char *, just_multi_suffix)); 2211 just_multi_suffix = just_machine_suffix; 2212 } 2213 else 2214 skip_multi_dir = true; 2215 if (multi_os_dir) 2216 { 2217 free (CONST_CAST (char *, multi_os_dir)); 2218 multi_os_dir = NULL; 2219 } 2220 else 2221 skip_multi_os_dir = true; 2222 } 2223 2224 if (multi_dir) 2225 { 2226 free (CONST_CAST (char *, multi_dir)); 2227 free (CONST_CAST (char *, multi_suffix)); 2228 free (CONST_CAST (char *, just_multi_suffix)); 2229 } 2230 if (multi_os_dir) 2231 free (CONST_CAST (char *, multi_os_dir)); 2232 if (ret != path) 2233 free (path); 2234 return ret; 2235 } 2236 2237 /* Callback for build_search_list. Adds path to obstack being built. */ 2238 2239 struct add_to_obstack_info { 2240 struct obstack *ob; 2241 bool check_dir; 2242 bool first_time; 2243 }; 2244 2245 static void * 2246 add_to_obstack (char *path, void *data) 2247 { 2248 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data; 2249 2250 if (info->check_dir && !is_directory (path, false)) 2251 return NULL; 2252 2253 if (!info->first_time) 2254 obstack_1grow (info->ob, PATH_SEPARATOR); 2255 2256 obstack_grow (info->ob, path, strlen (path)); 2257 2258 info->first_time = false; 2259 return NULL; 2260 } 2261 2262 /* Add or change the value of an environment variable, outputting the 2263 change to standard error if in verbose mode. */ 2264 static void 2265 xputenv (const char *string) 2266 { 2267 if (verbose_flag) 2268 fnotice (stderr, "%s\n", string); 2269 putenv (CONST_CAST (char *, string)); 2270 } 2271 2272 /* Build a list of search directories from PATHS. 2273 PREFIX is a string to prepend to the list. 2274 If CHECK_DIR_P is true we ensure the directory exists. 2275 If DO_MULTI is true, multilib paths are output first, then 2276 non-multilib paths. 2277 This is used mostly by putenv_from_prefixes so we use `collect_obstack'. 2278 It is also used by the --print-search-dirs flag. */ 2279 2280 static char * 2281 build_search_list (const struct path_prefix *paths, const char *prefix, 2282 bool check_dir, bool do_multi) 2283 { 2284 struct add_to_obstack_info info; 2285 2286 info.ob = &collect_obstack; 2287 info.check_dir = check_dir; 2288 info.first_time = true; 2289 2290 obstack_grow (&collect_obstack, prefix, strlen (prefix)); 2291 obstack_1grow (&collect_obstack, '='); 2292 2293 for_each_path (paths, do_multi, 0, add_to_obstack, &info); 2294 2295 obstack_1grow (&collect_obstack, '\0'); 2296 return XOBFINISH (&collect_obstack, char *); 2297 } 2298 2299 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables 2300 for collect. */ 2301 2302 static void 2303 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var, 2304 bool do_multi) 2305 { 2306 xputenv (build_search_list (paths, env_var, true, do_multi)); 2307 } 2308 2309 /* Check whether NAME can be accessed in MODE. This is like access, 2310 except that it never considers directories to be executable. */ 2311 2312 static int 2313 access_check (const char *name, int mode) 2314 { 2315 if (mode == X_OK) 2316 { 2317 struct stat st; 2318 2319 if (stat (name, &st) < 0 2320 || S_ISDIR (st.st_mode)) 2321 return -1; 2322 } 2323 2324 return access (name, mode); 2325 } 2326 2327 /* Callback for find_a_file. Appends the file name to the directory 2328 path. If the resulting file exists in the right mode, return the 2329 full pathname to the file. */ 2330 2331 struct file_at_path_info { 2332 const char *name; 2333 const char *suffix; 2334 int name_len; 2335 int suffix_len; 2336 int mode; 2337 }; 2338 2339 static void * 2340 file_at_path (char *path, void *data) 2341 { 2342 struct file_at_path_info *info = (struct file_at_path_info *) data; 2343 size_t len = strlen (path); 2344 2345 memcpy (path + len, info->name, info->name_len); 2346 len += info->name_len; 2347 2348 /* Some systems have a suffix for executable files. 2349 So try appending that first. */ 2350 if (info->suffix_len) 2351 { 2352 memcpy (path + len, info->suffix, info->suffix_len + 1); 2353 if (access_check (path, info->mode) == 0) 2354 return path; 2355 } 2356 2357 path[len] = '\0'; 2358 if (access_check (path, info->mode) == 0) 2359 return path; 2360 2361 return NULL; 2362 } 2363 2364 /* Search for NAME using the prefix list PREFIXES. MODE is passed to 2365 access to check permissions. If DO_MULTI is true, search multilib 2366 paths then non-multilib paths, otherwise do not search multilib paths. 2367 Return 0 if not found, otherwise return its name, allocated with malloc. */ 2368 2369 static char * 2370 find_a_file (const struct path_prefix *pprefix, const char *name, int mode, 2371 bool do_multi) 2372 { 2373 struct file_at_path_info info; 2374 2375 #ifdef DEFAULT_ASSEMBLER 2376 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0) 2377 return xstrdup (DEFAULT_ASSEMBLER); 2378 #endif 2379 2380 #ifdef DEFAULT_LINKER 2381 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0) 2382 return xstrdup (DEFAULT_LINKER); 2383 #endif 2384 2385 /* Determine the filename to execute (special case for absolute paths). */ 2386 2387 if (IS_ABSOLUTE_PATH (name)) 2388 { 2389 if (access (name, mode) == 0) 2390 return xstrdup (name); 2391 2392 return NULL; 2393 } 2394 2395 info.name = name; 2396 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : ""; 2397 info.name_len = strlen (info.name); 2398 info.suffix_len = strlen (info.suffix); 2399 info.mode = mode; 2400 2401 return (char*) for_each_path (pprefix, do_multi, 2402 info.name_len + info.suffix_len, 2403 file_at_path, &info); 2404 } 2405 2406 /* Ranking of prefixes in the sort list. -B prefixes are put before 2407 all others. */ 2408 2409 enum path_prefix_priority 2410 { 2411 PREFIX_PRIORITY_B_OPT, 2412 PREFIX_PRIORITY_LAST 2413 }; 2414 2415 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending 2416 order according to PRIORITY. Within each PRIORITY, new entries are 2417 appended. 2418 2419 If WARN is nonzero, we will warn if no file is found 2420 through this prefix. WARN should point to an int 2421 which will be set to 1 if this entry is used. 2422 2423 COMPONENT is the value to be passed to update_path. 2424 2425 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without 2426 the complete value of machine_suffix. 2427 2 means try both machine_suffix and just_machine_suffix. */ 2428 2429 static void 2430 add_prefix (struct path_prefix *pprefix, const char *prefix, 2431 const char *component, /* enum prefix_priority */ int priority, 2432 int require_machine_suffix, int os_multilib) 2433 { 2434 struct prefix_list *pl, **prev; 2435 int len; 2436 2437 for (prev = &pprefix->plist; 2438 (*prev) != NULL && (*prev)->priority <= priority; 2439 prev = &(*prev)->next) 2440 ; 2441 2442 /* Keep track of the longest prefix. */ 2443 2444 prefix = update_path (prefix, component); 2445 len = strlen (prefix); 2446 if (len > pprefix->max_len) 2447 pprefix->max_len = len; 2448 2449 pl = XNEW (struct prefix_list); 2450 pl->prefix = prefix; 2451 pl->require_machine_suffix = require_machine_suffix; 2452 pl->priority = priority; 2453 pl->os_multilib = os_multilib; 2454 2455 /* Insert after PREV. */ 2456 pl->next = (*prev); 2457 (*prev) = pl; 2458 } 2459 2460 /* Same as add_prefix, but prepending target_system_root to prefix. */ 2461 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */ 2462 static void 2463 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix, 2464 const char *component, 2465 /* enum prefix_priority */ int priority, 2466 int require_machine_suffix, int os_multilib) 2467 { 2468 if (!IS_ABSOLUTE_PATH (prefix)) 2469 fatal_error ("system path %qs is not absolute", prefix); 2470 2471 if (target_system_root) 2472 { 2473 char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root); 2474 size_t sysroot_len = strlen (target_system_root); 2475 2476 if (sysroot_len > 0 2477 && target_system_root[sysroot_len - 1] == DIR_SEPARATOR) 2478 sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0'; 2479 2480 if (target_sysroot_suffix) 2481 prefix = concat (target_sysroot_suffix, prefix, NULL); 2482 prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL); 2483 free (sysroot_no_trailing_dir_separator); 2484 2485 /* We have to override this because GCC's notion of sysroot 2486 moves along with GCC. */ 2487 component = "GCC"; 2488 } 2489 2490 add_prefix (pprefix, prefix, component, priority, 2491 require_machine_suffix, os_multilib); 2492 } 2493 2494 /* Execute the command specified by the arguments on the current line of spec. 2495 When using pipes, this includes several piped-together commands 2496 with `|' between them. 2497 2498 Return 0 if successful, -1 if failed. */ 2499 2500 static int 2501 execute (void) 2502 { 2503 int i; 2504 int n_commands; /* # of command. */ 2505 char *string; 2506 struct pex_obj *pex; 2507 struct command 2508 { 2509 const char *prog; /* program name. */ 2510 const char **argv; /* vector of args. */ 2511 }; 2512 const char *arg; 2513 2514 struct command *commands; /* each command buffer with above info. */ 2515 2516 gcc_assert (!processing_spec_function); 2517 2518 if (wrapper_string) 2519 { 2520 string = find_a_file (&exec_prefixes, 2521 VEC_index (const_char_p, argbuf, 0), X_OK, false); 2522 if (string) 2523 VEC_replace (const_char_p, argbuf, 0, string); 2524 insert_wrapper (wrapper_string); 2525 } 2526 2527 /* Count # of piped commands. */ 2528 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++) 2529 if (strcmp (arg, "|") == 0) 2530 n_commands++; 2531 2532 /* Get storage for each command. */ 2533 commands = (struct command *) alloca (n_commands * sizeof (struct command)); 2534 2535 /* Split argbuf into its separate piped processes, 2536 and record info about each one. 2537 Also search for the programs that are to be run. */ 2538 2539 VEC_safe_push (const_char_p, heap, argbuf, 0); 2540 2541 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */ 2542 commands[0].argv = VEC_address (const_char_p, argbuf); 2543 2544 if (!wrapper_string) 2545 { 2546 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false); 2547 commands[0].argv[0] = (string) ? string : commands[0].argv[0]; 2548 } 2549 2550 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++) 2551 if (arg && strcmp (arg, "|") == 0) 2552 { /* each command. */ 2553 #if defined (__MSDOS__) || defined (OS2) || defined (VMS) 2554 fatal_error ("-pipe not supported"); 2555 #endif 2556 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of 2557 command args. */ 2558 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1); 2559 commands[n_commands].argv 2560 = &(VEC_address (const_char_p, argbuf))[i + 1]; 2561 string = find_a_file (&exec_prefixes, commands[n_commands].prog, 2562 X_OK, false); 2563 if (string) 2564 commands[n_commands].argv[0] = string; 2565 n_commands++; 2566 } 2567 2568 /* If -v, print what we are about to do, and maybe query. */ 2569 2570 if (verbose_flag) 2571 { 2572 /* For help listings, put a blank line between sub-processes. */ 2573 if (print_help_list) 2574 fputc ('\n', stderr); 2575 2576 /* Print each piped command as a separate line. */ 2577 for (i = 0; i < n_commands; i++) 2578 { 2579 const char *const *j; 2580 2581 if (verbose_only_flag) 2582 { 2583 for (j = commands[i].argv; *j; j++) 2584 { 2585 const char *p; 2586 for (p = *j; *p; ++p) 2587 if (!ISALNUM ((unsigned char) *p) 2588 && *p != '_' && *p != '/' && *p != '-' && *p != '.') 2589 break; 2590 if (*p || !*j) 2591 { 2592 fprintf (stderr, " \""); 2593 for (p = *j; *p; ++p) 2594 { 2595 if (*p == '"' || *p == '\\' || *p == '$') 2596 fputc ('\\', stderr); 2597 fputc (*p, stderr); 2598 } 2599 fputc ('"', stderr); 2600 } 2601 /* If it's empty, print "". */ 2602 else if (!**j) 2603 fprintf (stderr, " \"\""); 2604 else 2605 fprintf (stderr, " %s", *j); 2606 } 2607 } 2608 else 2609 for (j = commands[i].argv; *j; j++) 2610 /* If it's empty, print "". */ 2611 if (!**j) 2612 fprintf (stderr, " \"\""); 2613 else 2614 fprintf (stderr, " %s", *j); 2615 2616 /* Print a pipe symbol after all but the last command. */ 2617 if (i + 1 != n_commands) 2618 fprintf (stderr, " |"); 2619 fprintf (stderr, "\n"); 2620 } 2621 fflush (stderr); 2622 if (verbose_only_flag != 0) 2623 { 2624 /* verbose_only_flag should act as if the spec was 2625 executed, so increment execution_count before 2626 returning. This prevents spurious warnings about 2627 unused linker input files, etc. */ 2628 execution_count++; 2629 return 0; 2630 } 2631 #ifdef DEBUG 2632 fnotice (stderr, "\nGo ahead? (y or n) "); 2633 fflush (stderr); 2634 i = getchar (); 2635 if (i != '\n') 2636 while (getchar () != '\n') 2637 ; 2638 2639 if (i != 'y' && i != 'Y') 2640 return 0; 2641 #endif /* DEBUG */ 2642 } 2643 2644 #ifdef ENABLE_VALGRIND_CHECKING 2645 /* Run the each command through valgrind. To simplify prepending the 2646 path to valgrind and the option "-q" (for quiet operation unless 2647 something triggers), we allocate a separate argv array. */ 2648 2649 for (i = 0; i < n_commands; i++) 2650 { 2651 const char **argv; 2652 int argc; 2653 int j; 2654 2655 for (argc = 0; commands[i].argv[argc] != NULL; argc++) 2656 ; 2657 2658 argv = XALLOCAVEC (const char *, argc + 3); 2659 2660 argv[0] = VALGRIND_PATH; 2661 argv[1] = "-q"; 2662 for (j = 2; j < argc + 2; j++) 2663 argv[j] = commands[i].argv[j - 2]; 2664 argv[j] = NULL; 2665 2666 commands[i].argv = argv; 2667 commands[i].prog = argv[0]; 2668 } 2669 #endif 2670 2671 /* Run each piped subprocess. */ 2672 2673 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file) 2674 ? PEX_RECORD_TIMES : 0), 2675 progname, temp_filename); 2676 if (pex == NULL) 2677 fatal_error ("pex_init failed: %m"); 2678 2679 for (i = 0; i < n_commands; i++) 2680 { 2681 const char *errmsg; 2682 int err; 2683 const char *string = commands[i].argv[0]; 2684 2685 errmsg = pex_run (pex, 2686 ((i + 1 == n_commands ? PEX_LAST : 0) 2687 | (string == commands[i].prog ? PEX_SEARCH : 0)), 2688 string, CONST_CAST (char **, commands[i].argv), 2689 NULL, NULL, &err); 2690 if (errmsg != NULL) 2691 { 2692 if (err == 0) 2693 fatal_error (errmsg); 2694 else 2695 { 2696 errno = err; 2697 pfatal_with_name (errmsg); 2698 } 2699 } 2700 2701 if (string != commands[i].prog) 2702 free (CONST_CAST (char *, string)); 2703 } 2704 2705 execution_count++; 2706 2707 /* Wait for all the subprocesses to finish. */ 2708 2709 { 2710 int *statuses; 2711 struct pex_time *times = NULL; 2712 int ret_code = 0; 2713 2714 statuses = (int *) alloca (n_commands * sizeof (int)); 2715 if (!pex_get_status (pex, n_commands, statuses)) 2716 fatal_error ("failed to get exit status: %m"); 2717 2718 if (report_times || report_times_to_file) 2719 { 2720 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time)); 2721 if (!pex_get_times (pex, n_commands, times)) 2722 fatal_error ("failed to get process times: %m"); 2723 } 2724 2725 pex_free (pex); 2726 2727 for (i = 0; i < n_commands; ++i) 2728 { 2729 int status = statuses[i]; 2730 2731 if (WIFSIGNALED (status)) 2732 { 2733 #ifdef SIGPIPE 2734 /* SIGPIPE is a special case. It happens in -pipe mode 2735 when the compiler dies before the preprocessor is done, 2736 or the assembler dies before the compiler is done. 2737 There's generally been an error already, and this is 2738 just fallout. So don't generate another error unless 2739 we would otherwise have succeeded. */ 2740 if (WTERMSIG (status) == SIGPIPE 2741 && (signal_count || greatest_status >= MIN_FATAL_STATUS)) 2742 { 2743 signal_count++; 2744 ret_code = -1; 2745 } 2746 else 2747 #endif 2748 internal_error ("%s (program %s)", 2749 strsignal (WTERMSIG (status)), commands[i].prog); 2750 } 2751 else if (WIFEXITED (status) 2752 && WEXITSTATUS (status) >= MIN_FATAL_STATUS) 2753 { 2754 if (WEXITSTATUS (status) > greatest_status) 2755 greatest_status = WEXITSTATUS (status); 2756 ret_code = -1; 2757 } 2758 2759 if (report_times || report_times_to_file) 2760 { 2761 struct pex_time *pt = ×[i]; 2762 double ut, st; 2763 2764 ut = ((double) pt->user_seconds 2765 + (double) pt->user_microseconds / 1.0e6); 2766 st = ((double) pt->system_seconds 2767 + (double) pt->system_microseconds / 1.0e6); 2768 2769 if (ut + st != 0) 2770 { 2771 if (report_times) 2772 fnotice (stderr, "# %s %.2f %.2f\n", 2773 commands[i].prog, ut, st); 2774 2775 if (report_times_to_file) 2776 { 2777 int c = 0; 2778 const char *const *j; 2779 2780 fprintf (report_times_to_file, "%g %g", ut, st); 2781 2782 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c]) 2783 { 2784 const char *p; 2785 for (p = *j; *p; ++p) 2786 if (*p == '"' || *p == '\\' || *p == '$' 2787 || ISSPACE (*p)) 2788 break; 2789 2790 if (*p) 2791 { 2792 fprintf (report_times_to_file, " \""); 2793 for (p = *j; *p; ++p) 2794 { 2795 if (*p == '"' || *p == '\\' || *p == '$') 2796 fputc ('\\', report_times_to_file); 2797 fputc (*p, report_times_to_file); 2798 } 2799 fputc ('"', report_times_to_file); 2800 } 2801 else 2802 fprintf (report_times_to_file, " %s", *j); 2803 } 2804 2805 fputc ('\n', report_times_to_file); 2806 } 2807 } 2808 } 2809 } 2810 2811 return ret_code; 2812 } 2813 } 2814 2815 /* Find all the switches given to us 2816 and make a vector describing them. 2817 The elements of the vector are strings, one per switch given. 2818 If a switch uses following arguments, then the `part1' field 2819 is the switch itself and the `args' field 2820 is a null-terminated vector containing the following arguments. 2821 Bits in the `live_cond' field are: 2822 SWITCH_LIVE to indicate this switch is true in a conditional spec. 2823 SWITCH_FALSE to indicate this switch is overridden by a later switch. 2824 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S). 2825 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored 2826 in all do_spec calls afterwards. Used for %<S from self specs. 2827 The `validated' field is nonzero if any spec has looked at this switch; 2828 if it remains zero at the end of the run, it must be meaningless. */ 2829 2830 #define SWITCH_LIVE (1 << 0) 2831 #define SWITCH_FALSE (1 << 1) 2832 #define SWITCH_IGNORE (1 << 2) 2833 #define SWITCH_IGNORE_PERMANENTLY (1 << 3) 2834 #define SWITCH_KEEP_FOR_GCC (1 << 4) 2835 2836 struct switchstr 2837 { 2838 const char *part1; 2839 const char **args; 2840 unsigned int live_cond; 2841 unsigned char validated; 2842 unsigned char ordering; 2843 }; 2844 2845 static struct switchstr *switches; 2846 2847 static int n_switches; 2848 2849 static int n_switches_alloc; 2850 2851 /* Set to zero if -fcompare-debug is disabled, positive if it's 2852 enabled and we're running the first compilation, negative if it's 2853 enabled and we're running the second compilation. For most of the 2854 time, it's in the range -1..1, but it can be temporarily set to 2 2855 or 3 to indicate that the -fcompare-debug flags didn't come from 2856 the command-line, but rather from the GCC_COMPARE_DEBUG environment 2857 variable, until a synthesized -fcompare-debug flag is added to the 2858 command line. */ 2859 int compare_debug; 2860 2861 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */ 2862 int compare_debug_second; 2863 2864 /* Set to the flags that should be passed to the second compilation in 2865 a -fcompare-debug compilation. */ 2866 const char *compare_debug_opt; 2867 2868 static struct switchstr *switches_debug_check[2]; 2869 2870 static int n_switches_debug_check[2]; 2871 2872 static int n_switches_alloc_debug_check[2]; 2873 2874 static char *debug_check_temp_file[2]; 2875 2876 /* Language is one of three things: 2877 2878 1) The name of a real programming language. 2879 2) NULL, indicating that no one has figured out 2880 what it is yet. 2881 3) '*', indicating that the file should be passed 2882 to the linker. */ 2883 struct infile 2884 { 2885 const char *name; 2886 const char *language; 2887 struct compiler *incompiler; 2888 bool compiled; 2889 bool preprocessed; 2890 }; 2891 2892 /* Also a vector of input files specified. */ 2893 2894 static struct infile *infiles; 2895 2896 int n_infiles; 2897 2898 static int n_infiles_alloc; 2899 2900 /* True if multiple input files are being compiled to a single 2901 assembly file. */ 2902 2903 static bool combine_inputs; 2904 2905 /* This counts the number of libraries added by lang_specific_driver, so that 2906 we can tell if there were any user supplied any files or libraries. */ 2907 2908 static int added_libraries; 2909 2910 /* And a vector of corresponding output files is made up later. */ 2911 2912 const char **outfiles; 2913 2914 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 2915 2916 /* Convert NAME to a new name if it is the standard suffix. DO_EXE 2917 is true if we should look for an executable suffix. DO_OBJ 2918 is true if we should look for an object suffix. */ 2919 2920 static const char * 2921 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED, 2922 int do_obj ATTRIBUTE_UNUSED) 2923 { 2924 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 2925 int i; 2926 #endif 2927 int len; 2928 2929 if (name == NULL) 2930 return NULL; 2931 2932 len = strlen (name); 2933 2934 #ifdef HAVE_TARGET_OBJECT_SUFFIX 2935 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */ 2936 if (do_obj && len > 2 2937 && name[len - 2] == '.' 2938 && name[len - 1] == 'o') 2939 { 2940 obstack_grow (&obstack, name, len - 2); 2941 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 2942 name = XOBFINISH (&obstack, const char *); 2943 } 2944 #endif 2945 2946 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 2947 /* If there is no filetype, make it the executable suffix (which includes 2948 the "."). But don't get confused if we have just "-o". */ 2949 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-')) 2950 return name; 2951 2952 for (i = len - 1; i >= 0; i--) 2953 if (IS_DIR_SEPARATOR (name[i])) 2954 break; 2955 2956 for (i++; i < len; i++) 2957 if (name[i] == '.') 2958 return name; 2959 2960 obstack_grow (&obstack, name, len); 2961 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, 2962 strlen (TARGET_EXECUTABLE_SUFFIX)); 2963 name = XOBFINISH (&obstack, const char *); 2964 #endif 2965 2966 return name; 2967 } 2968 #endif 2969 2970 /* Display the command line switches accepted by gcc. */ 2971 static void 2972 display_help (void) 2973 { 2974 printf (_("Usage: %s [options] file...\n"), progname); 2975 fputs (_("Options:\n"), stdout); 2976 2977 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout); 2978 fputs (_(" --help Display this information\n"), stdout); 2979 fputs (_(" --target-help Display target specific command line options\n"), stdout); 2980 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout); 2981 fputs (_(" Display specific types of command line options\n"), stdout); 2982 if (! verbose_flag) 2983 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout); 2984 fputs (_(" --version Display compiler version information\n"), stdout); 2985 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout); 2986 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout); 2987 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout); 2988 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout); 2989 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout); 2990 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout); 2991 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout); 2992 fputs (_("\ 2993 -print-multiarch Display the target's normalized GNU triplet, used as\n\ 2994 a component in the library path\n"), stdout); 2995 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout); 2996 fputs (_("\ 2997 -print-multi-lib Display the mapping between command line options and\n\ 2998 multiple library search directories\n"), stdout); 2999 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout); 3000 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout); 3001 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout); 3002 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout); 3003 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout); 3004 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout); 3005 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout); 3006 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout); 3007 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout); 3008 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout); 3009 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout); 3010 fputs (_("\ 3011 -no-canonical-prefixes Do not canonicalize paths when building relative\n\ 3012 prefixes to other gcc components\n"), stdout); 3013 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout); 3014 fputs (_(" -time Time the execution of each subprocess\n"), stdout); 3015 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout); 3016 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout); 3017 fputs (_("\ 3018 --sysroot=<directory> Use <directory> as the root directory for headers\n\ 3019 and libraries\n"), stdout); 3020 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout); 3021 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout); 3022 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout); 3023 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout); 3024 fputs (_(" -S Compile only; do not assemble or link\n"), stdout); 3025 fputs (_(" -c Compile and assemble, but do not link\n"), stdout); 3026 fputs (_(" -o <file> Place the output into <file>\n"), stdout); 3027 fputs (_(" -pie Create a position independent executable\n"), stdout); 3028 fputs (_(" -shared Create a shared library\n"), stdout); 3029 fputs (_("\ 3030 -x <language> Specify the language of the following input files\n\ 3031 Permissible languages include: c c++ assembler none\n\ 3032 'none' means revert to the default behavior of\n\ 3033 guessing the language based on the file's extension\n\ 3034 "), stdout); 3035 3036 printf (_("\ 3037 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ 3038 passed on to the various sub-processes invoked by %s. In order to pass\n\ 3039 other options on to these processes the -W<letter> options must be used.\n\ 3040 "), progname); 3041 3042 /* The rest of the options are displayed by invocations of the various 3043 sub-processes. */ 3044 } 3045 3046 static void 3047 add_preprocessor_option (const char *option, int len) 3048 { 3049 VEC_safe_push (char_p, heap, preprocessor_options, 3050 save_string (option, len)); 3051 } 3052 3053 static void 3054 add_assembler_option (const char *option, int len) 3055 { 3056 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len)); 3057 } 3058 3059 static void 3060 add_linker_option (const char *option, int len) 3061 { 3062 VEC_safe_push (char_p, heap, linker_options, save_string (option, len)); 3063 } 3064 3065 /* Allocate space for an input file in infiles. */ 3066 3067 static void 3068 alloc_infile (void) 3069 { 3070 if (n_infiles_alloc == 0) 3071 { 3072 n_infiles_alloc = 16; 3073 infiles = XNEWVEC (struct infile, n_infiles_alloc); 3074 } 3075 else if (n_infiles_alloc == n_infiles) 3076 { 3077 n_infiles_alloc *= 2; 3078 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc); 3079 } 3080 } 3081 3082 /* Store an input file with the given NAME and LANGUAGE in 3083 infiles. */ 3084 3085 static void 3086 add_infile (const char *name, const char *language) 3087 { 3088 alloc_infile (); 3089 infiles[n_infiles].name = name; 3090 infiles[n_infiles++].language = language; 3091 } 3092 3093 /* Allocate space for a switch in switches. */ 3094 3095 static void 3096 alloc_switch (void) 3097 { 3098 if (n_switches_alloc == 0) 3099 { 3100 n_switches_alloc = 16; 3101 switches = XNEWVEC (struct switchstr, n_switches_alloc); 3102 } 3103 else if (n_switches_alloc == n_switches) 3104 { 3105 n_switches_alloc *= 2; 3106 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc); 3107 } 3108 } 3109 3110 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it 3111 as validated if VALIDATED. */ 3112 3113 static void 3114 save_switch (const char *opt, size_t n_args, const char *const *args, 3115 bool validated) 3116 { 3117 alloc_switch (); 3118 switches[n_switches].part1 = opt + 1; 3119 if (n_args == 0) 3120 switches[n_switches].args = 0; 3121 else 3122 { 3123 switches[n_switches].args = XNEWVEC (const char *, n_args + 1); 3124 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *)); 3125 switches[n_switches].args[n_args] = NULL; 3126 } 3127 3128 switches[n_switches].live_cond = 0; 3129 switches[n_switches].validated = validated; 3130 switches[n_switches].ordering = 0; 3131 n_switches++; 3132 } 3133 3134 /* Handle an option DECODED that is unknown to the option-processing 3135 machinery. */ 3136 3137 static bool 3138 driver_unknown_option_callback (const struct cl_decoded_option *decoded) 3139 { 3140 const char *opt = decoded->arg; 3141 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-' 3142 && !(decoded->errors & CL_ERR_NEGATIVE)) 3143 { 3144 /* Leave unknown -Wno-* options for the compiler proper, to be 3145 diagnosed only if there are warnings. */ 3146 save_switch (decoded->canonical_option[0], 3147 decoded->canonical_option_num_elements - 1, 3148 &decoded->canonical_option[1], false); 3149 return false; 3150 } 3151 else 3152 return true; 3153 } 3154 3155 /* Handle an option DECODED that is not marked as CL_DRIVER. 3156 LANG_MASK will always be CL_DRIVER. */ 3157 3158 static void 3159 driver_wrong_lang_callback (const struct cl_decoded_option *decoded, 3160 unsigned int lang_mask ATTRIBUTE_UNUSED) 3161 { 3162 /* At this point, non-driver options are accepted (and expected to 3163 be passed down by specs) unless marked to be rejected by the 3164 driver. Options to be rejected by the driver but accepted by the 3165 compilers proper are treated just like completely unknown 3166 options. */ 3167 const struct cl_option *option = &cl_options[decoded->opt_index]; 3168 3169 if (option->cl_reject_driver) 3170 error ("unrecognized command line option %qs", 3171 decoded->orig_option_with_args_text); 3172 else 3173 save_switch (decoded->canonical_option[0], 3174 decoded->canonical_option_num_elements - 1, 3175 &decoded->canonical_option[1], false); 3176 } 3177 3178 static const char *spec_lang = 0; 3179 static int last_language_n_infiles; 3180 3181 /* Handle a driver option; arguments and return value as for 3182 handle_option. */ 3183 3184 static bool 3185 driver_handle_option (struct gcc_options *opts, 3186 struct gcc_options *opts_set, 3187 const struct cl_decoded_option *decoded, 3188 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind, 3189 location_t loc, 3190 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED, 3191 diagnostic_context *dc) 3192 { 3193 size_t opt_index = decoded->opt_index; 3194 const char *arg = decoded->arg; 3195 const char *compare_debug_replacement_opt; 3196 int value = decoded->value; 3197 bool validated = false; 3198 bool do_save = true; 3199 3200 gcc_assert (opts == &global_options); 3201 gcc_assert (opts_set == &global_options_set); 3202 gcc_assert (kind == DK_UNSPECIFIED); 3203 gcc_assert (loc == UNKNOWN_LOCATION); 3204 gcc_assert (dc == global_dc); 3205 3206 switch (opt_index) 3207 { 3208 case OPT_dumpspecs: 3209 { 3210 struct spec_list *sl; 3211 init_spec (); 3212 for (sl = specs; sl; sl = sl->next) 3213 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec)); 3214 if (link_command_spec) 3215 printf ("*link_command:\n%s\n\n", link_command_spec); 3216 exit (0); 3217 } 3218 3219 case OPT_dumpversion: 3220 printf ("%s\n", spec_version); 3221 exit (0); 3222 3223 case OPT_dumpmachine: 3224 printf ("%s\n", spec_machine); 3225 exit (0); 3226 3227 case OPT__version: 3228 print_version = 1; 3229 3230 /* CPP driver cannot obtain switch from cc1_options. */ 3231 if (is_cpp_driver) 3232 add_preprocessor_option ("--version", strlen ("--version")); 3233 add_assembler_option ("--version", strlen ("--version")); 3234 add_linker_option ("--version", strlen ("--version")); 3235 break; 3236 3237 case OPT__help: 3238 print_help_list = 1; 3239 3240 /* CPP driver cannot obtain switch from cc1_options. */ 3241 if (is_cpp_driver) 3242 add_preprocessor_option ("--help", 6); 3243 add_assembler_option ("--help", 6); 3244 add_linker_option ("--help", 6); 3245 break; 3246 3247 case OPT__help_: 3248 print_subprocess_help = 2; 3249 break; 3250 3251 case OPT__target_help: 3252 print_subprocess_help = 1; 3253 3254 /* CPP driver cannot obtain switch from cc1_options. */ 3255 if (is_cpp_driver) 3256 add_preprocessor_option ("--target-help", 13); 3257 add_assembler_option ("--target-help", 13); 3258 add_linker_option ("--target-help", 13); 3259 break; 3260 3261 case OPT_pass_exit_codes: 3262 case OPT_print_search_dirs: 3263 case OPT_print_file_name_: 3264 case OPT_print_prog_name_: 3265 case OPT_print_multi_lib: 3266 case OPT_print_multi_directory: 3267 case OPT_print_sysroot: 3268 case OPT_print_multi_os_directory: 3269 case OPT_print_multiarch: 3270 case OPT_print_sysroot_headers_suffix: 3271 case OPT_time: 3272 case OPT_wrapper: 3273 /* These options set the variables specified in common.opt 3274 automatically, and do not need to be saved for spec 3275 processing. */ 3276 do_save = false; 3277 break; 3278 3279 case OPT_print_libgcc_file_name: 3280 print_file_name = "libgcc.a"; 3281 do_save = false; 3282 break; 3283 3284 case OPT_fcompare_debug_second: 3285 compare_debug_second = 1; 3286 break; 3287 3288 case OPT_fcompare_debug: 3289 switch (value) 3290 { 3291 case 0: 3292 compare_debug_replacement_opt = "-fcompare-debug="; 3293 arg = ""; 3294 goto compare_debug_with_arg; 3295 3296 case 1: 3297 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle"; 3298 arg = "-gtoggle"; 3299 goto compare_debug_with_arg; 3300 3301 default: 3302 gcc_unreachable (); 3303 } 3304 break; 3305 3306 case OPT_fcompare_debug_: 3307 compare_debug_replacement_opt = decoded->canonical_option[0]; 3308 compare_debug_with_arg: 3309 gcc_assert (decoded->canonical_option_num_elements == 1); 3310 gcc_assert (arg != NULL); 3311 if (*arg) 3312 compare_debug = 1; 3313 else 3314 compare_debug = -1; 3315 if (compare_debug < 0) 3316 compare_debug_opt = NULL; 3317 else 3318 compare_debug_opt = arg; 3319 save_switch (compare_debug_replacement_opt, 0, NULL, validated); 3320 return true; 3321 3322 case OPT_Wa_: 3323 { 3324 int prev, j; 3325 /* Pass the rest of this option to the assembler. */ 3326 3327 /* Split the argument at commas. */ 3328 prev = 0; 3329 for (j = 0; arg[j]; j++) 3330 if (arg[j] == ',') 3331 { 3332 add_assembler_option (arg + prev, j - prev); 3333 prev = j + 1; 3334 } 3335 3336 /* Record the part after the last comma. */ 3337 add_assembler_option (arg + prev, j - prev); 3338 } 3339 do_save = false; 3340 break; 3341 3342 case OPT_Wp_: 3343 { 3344 int prev, j; 3345 /* Pass the rest of this option to the preprocessor. */ 3346 3347 /* Split the argument at commas. */ 3348 prev = 0; 3349 for (j = 0; arg[j]; j++) 3350 if (arg[j] == ',') 3351 { 3352 add_preprocessor_option (arg + prev, j - prev); 3353 prev = j + 1; 3354 } 3355 3356 /* Record the part after the last comma. */ 3357 add_preprocessor_option (arg + prev, j - prev); 3358 } 3359 do_save = false; 3360 break; 3361 3362 case OPT_Wl_: 3363 { 3364 int prev, j; 3365 /* Split the argument at commas. */ 3366 prev = 0; 3367 for (j = 0; arg[j]; j++) 3368 if (arg[j] == ',') 3369 { 3370 add_infile (save_string (arg + prev, j - prev), "*"); 3371 prev = j + 1; 3372 } 3373 /* Record the part after the last comma. */ 3374 add_infile (arg + prev, "*"); 3375 } 3376 do_save = false; 3377 break; 3378 3379 case OPT_Xlinker: 3380 add_infile (arg, "*"); 3381 do_save = false; 3382 break; 3383 3384 case OPT_Xpreprocessor: 3385 add_preprocessor_option (arg, strlen (arg)); 3386 do_save = false; 3387 break; 3388 3389 case OPT_Xassembler: 3390 add_assembler_option (arg, strlen (arg)); 3391 do_save = false; 3392 break; 3393 3394 case OPT_l: 3395 /* POSIX allows separation of -l and the lib arg; canonicalize 3396 by concatenating -l with its arg */ 3397 add_infile (concat ("-l", arg, NULL), "*"); 3398 do_save = false; 3399 break; 3400 3401 case OPT_L: 3402 /* Similarly, canonicalize -L for linkers that may not accept 3403 separate arguments. */ 3404 save_switch (concat ("-L", arg, NULL), 0, NULL, validated); 3405 return true; 3406 3407 case OPT_F: 3408 /* Likewise -F. */ 3409 save_switch (concat ("-F", arg, NULL), 0, NULL, validated); 3410 return true; 3411 3412 case OPT_save_temps: 3413 save_temps_flag = SAVE_TEMPS_CWD; 3414 validated = true; 3415 break; 3416 3417 case OPT_save_temps_: 3418 if (strcmp (arg, "cwd") == 0) 3419 save_temps_flag = SAVE_TEMPS_CWD; 3420 else if (strcmp (arg, "obj") == 0 3421 || strcmp (arg, "object") == 0) 3422 save_temps_flag = SAVE_TEMPS_OBJ; 3423 else 3424 fatal_error ("%qs is an unknown -save-temps option", 3425 decoded->orig_option_with_args_text); 3426 break; 3427 3428 case OPT_no_canonical_prefixes: 3429 /* Already handled as a special case, so ignored here. */ 3430 do_save = false; 3431 break; 3432 3433 case OPT_pipe: 3434 validated = true; 3435 /* These options set the variables specified in common.opt 3436 automatically, but do need to be saved for spec 3437 processing. */ 3438 break; 3439 3440 case OPT_specs_: 3441 { 3442 struct user_specs *user = XNEW (struct user_specs); 3443 3444 user->next = (struct user_specs *) 0; 3445 user->filename = arg; 3446 if (user_specs_tail) 3447 user_specs_tail->next = user; 3448 else 3449 user_specs_head = user; 3450 user_specs_tail = user; 3451 } 3452 do_save = false; 3453 break; 3454 3455 case OPT__sysroot_: 3456 target_system_root = arg; 3457 target_system_root_changed = 1; 3458 do_save = false; 3459 break; 3460 3461 case OPT_time_: 3462 if (report_times_to_file) 3463 fclose (report_times_to_file); 3464 report_times_to_file = fopen (arg, "a"); 3465 do_save = false; 3466 break; 3467 3468 case OPT____: 3469 /* "-###" 3470 This is similar to -v except that there is no execution 3471 of the commands and the echoed arguments are quoted. It 3472 is intended for use in shell scripts to capture the 3473 driver-generated command line. */ 3474 verbose_only_flag++; 3475 verbose_flag = 1; 3476 do_save = false; 3477 break; 3478 3479 case OPT_B: 3480 { 3481 size_t len = strlen (arg); 3482 3483 /* Catch the case where the user has forgotten to append a 3484 directory separator to the path. Note, they may be using 3485 -B to add an executable name prefix, eg "i386-elf-", in 3486 order to distinguish between multiple installations of 3487 GCC in the same directory. Hence we must check to see 3488 if appending a directory separator actually makes a 3489 valid directory name. */ 3490 if (!IS_DIR_SEPARATOR (arg[len - 1]) 3491 && is_directory (arg, false)) 3492 { 3493 char *tmp = XNEWVEC (char, len + 2); 3494 strcpy (tmp, arg); 3495 tmp[len] = DIR_SEPARATOR; 3496 tmp[++len] = 0; 3497 arg = tmp; 3498 } 3499 3500 add_prefix (&exec_prefixes, arg, NULL, 3501 PREFIX_PRIORITY_B_OPT, 0, 0); 3502 add_prefix (&startfile_prefixes, arg, NULL, 3503 PREFIX_PRIORITY_B_OPT, 0, 0); 3504 add_prefix (&include_prefixes, arg, NULL, 3505 PREFIX_PRIORITY_B_OPT, 0, 0); 3506 } 3507 validated = true; 3508 break; 3509 3510 case OPT_x: 3511 spec_lang = arg; 3512 if (!strcmp (spec_lang, "none")) 3513 /* Suppress the warning if -xnone comes after the last input 3514 file, because alternate command interfaces like g++ might 3515 find it useful to place -xnone after each input file. */ 3516 spec_lang = 0; 3517 else 3518 last_language_n_infiles = n_infiles; 3519 do_save = false; 3520 break; 3521 3522 case OPT_o: 3523 have_o = 1; 3524 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) 3525 arg = convert_filename (arg, ! have_c, 0); 3526 #endif 3527 /* Save the output name in case -save-temps=obj was used. */ 3528 save_temps_prefix = xstrdup (arg); 3529 /* On some systems, ld cannot handle "-o" without a space. So 3530 split the option from its argument. */ 3531 save_switch ("-o", 1, &arg, validated); 3532 return true; 3533 3534 case OPT_static_libgcc: 3535 case OPT_shared_libgcc: 3536 case OPT_static_libgfortran: 3537 case OPT_static_libstdc__: 3538 /* These are always valid, since gcc.c itself understands the 3539 first two, gfortranspec.c understands -static-libgfortran and 3540 g++spec.c understands -static-libstdc++ */ 3541 validated = true; 3542 break; 3543 3544 default: 3545 /* Various driver options need no special processing at this 3546 point, having been handled in a prescan above or being 3547 handled by specs. */ 3548 break; 3549 } 3550 3551 if (do_save) 3552 save_switch (decoded->canonical_option[0], 3553 decoded->canonical_option_num_elements - 1, 3554 &decoded->canonical_option[1], validated); 3555 return true; 3556 } 3557 3558 /* Put the driver's standard set of option handlers in *HANDLERS. */ 3559 3560 static void 3561 set_option_handlers (struct cl_option_handlers *handlers) 3562 { 3563 handlers->unknown_option_callback = driver_unknown_option_callback; 3564 handlers->wrong_lang_callback = driver_wrong_lang_callback; 3565 handlers->num_handlers = 3; 3566 handlers->handlers[0].handler = driver_handle_option; 3567 handlers->handlers[0].mask = CL_DRIVER; 3568 handlers->handlers[1].handler = common_handle_option; 3569 handlers->handlers[1].mask = CL_COMMON; 3570 handlers->handlers[2].handler = target_handle_option; 3571 handlers->handlers[2].mask = CL_TARGET; 3572 } 3573 3574 /* Create the vector `switches' and its contents. 3575 Store its length in `n_switches'. */ 3576 3577 static void 3578 process_command (unsigned int decoded_options_count, 3579 struct cl_decoded_option *decoded_options) 3580 { 3581 const char *temp; 3582 char *temp1; 3583 const char *tooldir_prefix; 3584 char *(*get_relative_prefix) (const char *, const char *, 3585 const char *) = NULL; 3586 struct cl_option_handlers handlers; 3587 unsigned int j; 3588 3589 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX"); 3590 3591 n_switches = 0; 3592 n_infiles = 0; 3593 added_libraries = 0; 3594 3595 /* Figure compiler version from version string. */ 3596 3597 compiler_version = temp1 = xstrdup (version_string); 3598 3599 for (; *temp1; ++temp1) 3600 { 3601 if (*temp1 == ' ') 3602 { 3603 *temp1 = '\0'; 3604 break; 3605 } 3606 } 3607 3608 /* Handle any -no-canonical-prefixes flag early, to assign the function 3609 that builds relative prefixes. This function creates default search 3610 paths that are needed later in normal option handling. */ 3611 3612 for (j = 1; j < decoded_options_count; j++) 3613 { 3614 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes) 3615 { 3616 get_relative_prefix = make_relative_prefix_ignore_links; 3617 break; 3618 } 3619 } 3620 if (! get_relative_prefix) 3621 get_relative_prefix = make_relative_prefix; 3622 3623 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, 3624 see if we can create it from the pathname specified in 3625 decoded_options[0].arg. */ 3626 3627 gcc_libexec_prefix = standard_libexec_prefix; 3628 #ifndef VMS 3629 /* FIXME: make_relative_prefix doesn't yet work for VMS. */ 3630 if (!gcc_exec_prefix) 3631 { 3632 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg, 3633 standard_bindir_prefix, 3634 standard_exec_prefix); 3635 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg, 3636 standard_bindir_prefix, 3637 standard_libexec_prefix); 3638 if (gcc_exec_prefix) 3639 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL)); 3640 } 3641 else 3642 { 3643 /* make_relative_prefix requires a program name, but 3644 GCC_EXEC_PREFIX is typically a directory name with a trailing 3645 / (which is ignored by make_relative_prefix), so append a 3646 program name. */ 3647 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL); 3648 gcc_libexec_prefix = get_relative_prefix (tmp_prefix, 3649 standard_exec_prefix, 3650 standard_libexec_prefix); 3651 3652 /* The path is unrelocated, so fallback to the original setting. */ 3653 if (!gcc_libexec_prefix) 3654 gcc_libexec_prefix = standard_libexec_prefix; 3655 3656 free (tmp_prefix); 3657 } 3658 #else 3659 #endif 3660 /* From this point onward, gcc_exec_prefix is non-null if the toolchain 3661 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX 3662 or an automatically created GCC_EXEC_PREFIX from 3663 decoded_options[0].arg. */ 3664 3665 /* Do language-specific adjustment/addition of flags. */ 3666 lang_specific_driver (&decoded_options, &decoded_options_count, 3667 &added_libraries); 3668 3669 if (gcc_exec_prefix) 3670 { 3671 int len = strlen (gcc_exec_prefix); 3672 3673 if (len > (int) sizeof ("/lib/gcc/") - 1 3674 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) 3675 { 3676 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1; 3677 if (IS_DIR_SEPARATOR (*temp) 3678 && filename_ncmp (temp + 1, "lib", 3) == 0 3679 && IS_DIR_SEPARATOR (temp[4]) 3680 && filename_ncmp (temp + 5, "gcc", 3) == 0) 3681 len -= sizeof ("/lib/gcc/") - 1; 3682 } 3683 3684 set_std_prefix (gcc_exec_prefix, len); 3685 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC", 3686 PREFIX_PRIORITY_LAST, 0, 0); 3687 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC", 3688 PREFIX_PRIORITY_LAST, 0, 0); 3689 } 3690 3691 /* COMPILER_PATH and LIBRARY_PATH have values 3692 that are lists of directory names with colons. */ 3693 3694 temp = getenv ("COMPILER_PATH"); 3695 if (temp) 3696 { 3697 const char *startp, *endp; 3698 char *nstore = (char *) alloca (strlen (temp) + 3); 3699 3700 startp = endp = temp; 3701 while (1) 3702 { 3703 if (*endp == PATH_SEPARATOR || *endp == 0) 3704 { 3705 strncpy (nstore, startp, endp - startp); 3706 if (endp == startp) 3707 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3708 else if (!IS_DIR_SEPARATOR (endp[-1])) 3709 { 3710 nstore[endp - startp] = DIR_SEPARATOR; 3711 nstore[endp - startp + 1] = 0; 3712 } 3713 else 3714 nstore[endp - startp] = 0; 3715 add_prefix (&exec_prefixes, nstore, 0, 3716 PREFIX_PRIORITY_LAST, 0, 0); 3717 add_prefix (&include_prefixes, nstore, 0, 3718 PREFIX_PRIORITY_LAST, 0, 0); 3719 if (*endp == 0) 3720 break; 3721 endp = startp = endp + 1; 3722 } 3723 else 3724 endp++; 3725 } 3726 } 3727 3728 temp = getenv (LIBRARY_PATH_ENV); 3729 if (temp && *cross_compile == '0') 3730 { 3731 const char *startp, *endp; 3732 char *nstore = (char *) alloca (strlen (temp) + 3); 3733 3734 startp = endp = temp; 3735 while (1) 3736 { 3737 if (*endp == PATH_SEPARATOR || *endp == 0) 3738 { 3739 strncpy (nstore, startp, endp - startp); 3740 if (endp == startp) 3741 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3742 else if (!IS_DIR_SEPARATOR (endp[-1])) 3743 { 3744 nstore[endp - startp] = DIR_SEPARATOR; 3745 nstore[endp - startp + 1] = 0; 3746 } 3747 else 3748 nstore[endp - startp] = 0; 3749 add_prefix (&startfile_prefixes, nstore, NULL, 3750 PREFIX_PRIORITY_LAST, 0, 1); 3751 if (*endp == 0) 3752 break; 3753 endp = startp = endp + 1; 3754 } 3755 else 3756 endp++; 3757 } 3758 } 3759 3760 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ 3761 temp = getenv ("LPATH"); 3762 if (temp && *cross_compile == '0') 3763 { 3764 const char *startp, *endp; 3765 char *nstore = (char *) alloca (strlen (temp) + 3); 3766 3767 startp = endp = temp; 3768 while (1) 3769 { 3770 if (*endp == PATH_SEPARATOR || *endp == 0) 3771 { 3772 strncpy (nstore, startp, endp - startp); 3773 if (endp == startp) 3774 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3775 else if (!IS_DIR_SEPARATOR (endp[-1])) 3776 { 3777 nstore[endp - startp] = DIR_SEPARATOR; 3778 nstore[endp - startp + 1] = 0; 3779 } 3780 else 3781 nstore[endp - startp] = 0; 3782 add_prefix (&startfile_prefixes, nstore, NULL, 3783 PREFIX_PRIORITY_LAST, 0, 1); 3784 if (*endp == 0) 3785 break; 3786 endp = startp = endp + 1; 3787 } 3788 else 3789 endp++; 3790 } 3791 } 3792 3793 /* Process the options and store input files and switches in their 3794 vectors. */ 3795 3796 last_language_n_infiles = -1; 3797 3798 set_option_handlers (&handlers); 3799 3800 for (j = 1; j < decoded_options_count; j++) 3801 { 3802 switch (decoded_options[j].opt_index) 3803 { 3804 case OPT_S: 3805 case OPT_c: 3806 case OPT_E: 3807 have_c = 1; 3808 break; 3809 } 3810 if (have_c) 3811 break; 3812 } 3813 3814 for (j = 1; j < decoded_options_count; j++) 3815 { 3816 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file) 3817 { 3818 const char *arg = decoded_options[j].arg; 3819 const char *p = strrchr (arg, '@'); 3820 char *fname; 3821 long offset; 3822 int consumed; 3823 #ifdef HAVE_TARGET_OBJECT_SUFFIX 3824 arg = convert_filename (arg, 0, access (arg, F_OK)); 3825 #endif 3826 /* For LTO static archive support we handle input file 3827 specifications that are composed of a filename and 3828 an offset like FNAME@OFFSET. */ 3829 if (p 3830 && p != arg 3831 && sscanf (p, "@%li%n", &offset, &consumed) >= 1 3832 && strlen (p) == (unsigned int)consumed) 3833 { 3834 fname = (char *)xmalloc (p - arg + 1); 3835 memcpy (fname, arg, p - arg); 3836 fname[p - arg] = '\0'; 3837 /* Only accept non-stdin and existing FNAME parts, otherwise 3838 try with the full name. */ 3839 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0) 3840 { 3841 free (fname); 3842 fname = xstrdup (arg); 3843 } 3844 } 3845 else 3846 fname = xstrdup (arg); 3847 3848 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0) 3849 perror_with_name (fname); 3850 else 3851 add_infile (arg, spec_lang); 3852 3853 free (fname); 3854 continue; 3855 } 3856 3857 read_cmdline_option (&global_options, &global_options_set, 3858 decoded_options + j, UNKNOWN_LOCATION, 3859 CL_DRIVER, &handlers, global_dc); 3860 } 3861 3862 /* If -save-temps=obj and -o name, create the prefix to use for %b. 3863 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */ 3864 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL) 3865 { 3866 save_temps_length = strlen (save_temps_prefix); 3867 temp = strrchr (lbasename (save_temps_prefix), '.'); 3868 if (temp) 3869 { 3870 save_temps_length -= strlen (temp); 3871 save_temps_prefix[save_temps_length] = '\0'; 3872 } 3873 3874 } 3875 else if (save_temps_prefix != NULL) 3876 { 3877 free (save_temps_prefix); 3878 save_temps_prefix = NULL; 3879 } 3880 3881 if (save_temps_flag && use_pipes) 3882 { 3883 /* -save-temps overrides -pipe, so that temp files are produced */ 3884 if (save_temps_flag) 3885 warning (0, "-pipe ignored because -save-temps specified"); 3886 use_pipes = 0; 3887 } 3888 3889 if (!compare_debug) 3890 { 3891 const char *gcd = getenv ("GCC_COMPARE_DEBUG"); 3892 3893 if (gcd && gcd[0] == '-') 3894 { 3895 compare_debug = 2; 3896 compare_debug_opt = gcd; 3897 } 3898 else if (gcd && *gcd && strcmp (gcd, "0")) 3899 { 3900 compare_debug = 3; 3901 compare_debug_opt = "-gtoggle"; 3902 } 3903 } 3904 else if (compare_debug < 0) 3905 { 3906 compare_debug = 0; 3907 gcc_assert (!compare_debug_opt); 3908 } 3909 3910 /* Set up the search paths. We add directories that we expect to 3911 contain GNU Toolchain components before directories specified by 3912 the machine description so that we will find GNU components (like 3913 the GNU assembler) before those of the host system. */ 3914 3915 /* If we don't know where the toolchain has been installed, use the 3916 configured-in locations. */ 3917 if (!gcc_exec_prefix) 3918 { 3919 #ifndef OS2 3920 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC", 3921 PREFIX_PRIORITY_LAST, 1, 0); 3922 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS", 3923 PREFIX_PRIORITY_LAST, 2, 0); 3924 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS", 3925 PREFIX_PRIORITY_LAST, 2, 0); 3926 #endif 3927 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS", 3928 PREFIX_PRIORITY_LAST, 1, 0); 3929 } 3930 3931 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix)); 3932 tooldir_prefix = concat (tooldir_base_prefix, spec_machine, 3933 dir_separator_str, NULL); 3934 3935 /* Look for tools relative to the location from which the driver is 3936 running, or, if that is not available, the configured prefix. */ 3937 tooldir_prefix 3938 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, 3939 spec_machine, dir_separator_str, 3940 spec_version, dir_separator_str, tooldir_prefix, NULL); 3941 3942 add_prefix (&exec_prefixes, 3943 concat (tooldir_prefix, "bin", dir_separator_str, NULL), 3944 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0); 3945 add_prefix (&startfile_prefixes, 3946 concat (tooldir_prefix, "lib", dir_separator_str, NULL), 3947 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1); 3948 3949 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS) 3950 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix, 3951 then consider it to relocate with the rest of the GCC installation 3952 if GCC_EXEC_PREFIX is set. 3953 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */ 3954 if (target_system_root && !target_system_root_changed && gcc_exec_prefix) 3955 { 3956 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg, 3957 standard_bindir_prefix, 3958 target_system_root); 3959 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0) 3960 { 3961 target_system_root = tmp_prefix; 3962 target_system_root_changed = 1; 3963 } 3964 } 3965 #endif 3966 3967 /* More prefixes are enabled in main, after we read the specs file 3968 and determine whether this is cross-compilation or not. */ 3969 3970 if (n_infiles == last_language_n_infiles && spec_lang != 0) 3971 warning (0, "%<-x %s%> after last input file has no effect", spec_lang); 3972 3973 if (compare_debug == 2 || compare_debug == 3) 3974 { 3975 alloc_switch (); 3976 switches[n_switches].part1 = concat ("fcompare-debug=", 3977 compare_debug_opt, 3978 NULL); 3979 switches[n_switches].args = 0; 3980 switches[n_switches].live_cond = 0; 3981 switches[n_switches].validated = 0; 3982 switches[n_switches].ordering = 0; 3983 n_switches++; 3984 compare_debug = 1; 3985 } 3986 3987 /* Ensure we only invoke each subprocess once. */ 3988 if (print_subprocess_help || print_help_list || print_version) 3989 { 3990 n_infiles = 0; 3991 3992 /* Create a dummy input file, so that we can pass 3993 the help option on to the various sub-processes. */ 3994 add_infile ("help-dummy", "c"); 3995 } 3996 3997 alloc_switch (); 3998 switches[n_switches].part1 = 0; 3999 alloc_infile (); 4000 infiles[n_infiles].name = 0; 4001 } 4002 4003 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS 4004 and place that in the environment. */ 4005 4006 static void 4007 set_collect_gcc_options (void) 4008 { 4009 int i; 4010 int first_time; 4011 4012 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to 4013 the compiler. */ 4014 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=", 4015 sizeof ("COLLECT_GCC_OPTIONS=") - 1); 4016 4017 first_time = TRUE; 4018 for (i = 0; (int) i < n_switches; i++) 4019 { 4020 const char *const *args; 4021 const char *p, *q; 4022 if (!first_time) 4023 obstack_grow (&collect_obstack, " ", 1); 4024 4025 first_time = FALSE; 4026 4027 /* Ignore elided switches. */ 4028 if ((switches[i].live_cond 4029 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC)) 4030 == SWITCH_IGNORE) 4031 continue; 4032 4033 obstack_grow (&collect_obstack, "'-", 2); 4034 q = switches[i].part1; 4035 while ((p = strchr (q, '\''))) 4036 { 4037 obstack_grow (&collect_obstack, q, p - q); 4038 obstack_grow (&collect_obstack, "'\\''", 4); 4039 q = ++p; 4040 } 4041 obstack_grow (&collect_obstack, q, strlen (q)); 4042 obstack_grow (&collect_obstack, "'", 1); 4043 4044 for (args = switches[i].args; args && *args; args++) 4045 { 4046 obstack_grow (&collect_obstack, " '", 2); 4047 q = *args; 4048 while ((p = strchr (q, '\''))) 4049 { 4050 obstack_grow (&collect_obstack, q, p - q); 4051 obstack_grow (&collect_obstack, "'\\''", 4); 4052 q = ++p; 4053 } 4054 obstack_grow (&collect_obstack, q, strlen (q)); 4055 obstack_grow (&collect_obstack, "'", 1); 4056 } 4057 } 4058 obstack_grow (&collect_obstack, "\0", 1); 4059 xputenv (XOBFINISH (&collect_obstack, char *)); 4060 } 4061 4062 /* Process a spec string, accumulating and running commands. */ 4063 4064 /* These variables describe the input file name. 4065 input_file_number is the index on outfiles of this file, 4066 so that the output file name can be stored for later use by %o. 4067 input_basename is the start of the part of the input file 4068 sans all directory names, and basename_length is the number 4069 of characters starting there excluding the suffix .c or whatever. */ 4070 4071 static const char *gcc_input_filename; 4072 static int input_file_number; 4073 size_t input_filename_length; 4074 static int basename_length; 4075 static int suffixed_basename_length; 4076 static const char *input_basename; 4077 static const char *input_suffix; 4078 #ifndef HOST_LACKS_INODE_NUMBERS 4079 static struct stat input_stat; 4080 #endif 4081 static int input_stat_set; 4082 4083 /* The compiler used to process the current input file. */ 4084 static struct compiler *input_file_compiler; 4085 4086 /* These are variables used within do_spec and do_spec_1. */ 4087 4088 /* Nonzero if an arg has been started and not yet terminated 4089 (with space, tab or newline). */ 4090 static int arg_going; 4091 4092 /* Nonzero means %d or %g has been seen; the next arg to be terminated 4093 is a temporary file name. */ 4094 static int delete_this_arg; 4095 4096 /* Nonzero means %w has been seen; the next arg to be terminated 4097 is the output file name of this compilation. */ 4098 static int this_is_output_file; 4099 4100 /* Nonzero means %s has been seen; the next arg to be terminated 4101 is the name of a library file and we should try the standard 4102 search dirs for it. */ 4103 static int this_is_library_file; 4104 4105 /* Nonzero means %T has been seen; the next arg to be terminated 4106 is the name of a linker script and we should try all of the 4107 standard search dirs for it. If it is found insert a --script 4108 command line switch and then substitute the full path in place, 4109 otherwise generate an error message. */ 4110 static int this_is_linker_script; 4111 4112 /* Nonzero means that the input of this command is coming from a pipe. */ 4113 static int input_from_pipe; 4114 4115 /* Nonnull means substitute this for any suffix when outputting a switches 4116 arguments. */ 4117 static const char *suffix_subst; 4118 4119 /* If there is an argument being accumulated, terminate it and store it. */ 4120 4121 static void 4122 end_going_arg (void) 4123 { 4124 if (arg_going) 4125 { 4126 const char *string; 4127 4128 obstack_1grow (&obstack, 0); 4129 string = XOBFINISH (&obstack, const char *); 4130 if (this_is_library_file) 4131 string = find_file (string); 4132 if (this_is_linker_script) 4133 { 4134 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true); 4135 4136 if (full_script_path == NULL) 4137 { 4138 error ("unable to locate default linker script %qs in the library search paths", string); 4139 /* Script was not found on search path. */ 4140 return; 4141 } 4142 store_arg ("--script", false, false); 4143 string = full_script_path; 4144 } 4145 store_arg (string, delete_this_arg, this_is_output_file); 4146 if (this_is_output_file) 4147 outfiles[input_file_number] = string; 4148 arg_going = 0; 4149 } 4150 } 4151 4152 4153 /* Parse the WRAPPER string which is a comma separated list of the command line 4154 and insert them into the beginning of argbuf. */ 4155 4156 static void 4157 insert_wrapper (const char *wrapper) 4158 { 4159 int n = 0; 4160 int i; 4161 char *buf = xstrdup (wrapper); 4162 char *p = buf; 4163 unsigned int old_length = VEC_length (const_char_p, argbuf); 4164 4165 do 4166 { 4167 n++; 4168 while (*p == ',') 4169 p++; 4170 } 4171 while ((p = strchr (p, ',')) != NULL); 4172 4173 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n); 4174 memmove (VEC_address (const_char_p, argbuf) + n, 4175 VEC_address (const_char_p, argbuf), 4176 old_length * sizeof (const_char_p)); 4177 4178 i = 0; 4179 p = buf; 4180 do 4181 { 4182 while (*p == ',') 4183 { 4184 *p = 0; 4185 p++; 4186 } 4187 VEC_replace (const_char_p, argbuf, i, p); 4188 i++; 4189 } 4190 while ((p = strchr (p, ',')) != NULL); 4191 gcc_assert (i == n); 4192 } 4193 4194 /* Process the spec SPEC and run the commands specified therein. 4195 Returns 0 if the spec is successfully processed; -1 if failed. */ 4196 4197 int 4198 do_spec (const char *spec) 4199 { 4200 int value; 4201 4202 value = do_spec_2 (spec); 4203 4204 /* Force out any unfinished command. 4205 If -pipe, this forces out the last command if it ended in `|'. */ 4206 if (value == 0) 4207 { 4208 if (VEC_length (const_char_p, argbuf) > 0 4209 && !strcmp (VEC_last (const_char_p, argbuf), "|")) 4210 VEC_pop (const_char_p, argbuf); 4211 4212 set_collect_gcc_options (); 4213 4214 if (VEC_length (const_char_p, argbuf) > 0) 4215 value = execute (); 4216 } 4217 4218 return value; 4219 } 4220 4221 static int 4222 do_spec_2 (const char *spec) 4223 { 4224 int result; 4225 4226 clear_args (); 4227 arg_going = 0; 4228 delete_this_arg = 0; 4229 this_is_output_file = 0; 4230 this_is_library_file = 0; 4231 this_is_linker_script = 0; 4232 input_from_pipe = 0; 4233 suffix_subst = NULL; 4234 4235 result = do_spec_1 (spec, 0, NULL); 4236 4237 end_going_arg (); 4238 4239 return result; 4240 } 4241 4242 4243 /* Process the given spec string and add any new options to the end 4244 of the switches/n_switches array. */ 4245 4246 static void 4247 do_option_spec (const char *name, const char *spec) 4248 { 4249 unsigned int i, value_count, value_len; 4250 const char *p, *q, *value; 4251 char *tmp_spec, *tmp_spec_p; 4252 4253 if (configure_default_options[0].name == NULL) 4254 return; 4255 4256 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++) 4257 if (strcmp (configure_default_options[i].name, name) == 0) 4258 break; 4259 if (i == ARRAY_SIZE (configure_default_options)) 4260 return; 4261 4262 value = configure_default_options[i].value; 4263 value_len = strlen (value); 4264 4265 /* Compute the size of the final spec. */ 4266 value_count = 0; 4267 p = spec; 4268 while ((p = strstr (p, "%(VALUE)")) != NULL) 4269 { 4270 p ++; 4271 value_count ++; 4272 } 4273 4274 /* Replace each %(VALUE) by the specified value. */ 4275 tmp_spec = (char *) alloca (strlen (spec) + 1 4276 + value_count * (value_len - strlen ("%(VALUE)"))); 4277 tmp_spec_p = tmp_spec; 4278 q = spec; 4279 while ((p = strstr (q, "%(VALUE)")) != NULL) 4280 { 4281 memcpy (tmp_spec_p, q, p - q); 4282 tmp_spec_p = tmp_spec_p + (p - q); 4283 memcpy (tmp_spec_p, value, value_len); 4284 tmp_spec_p += value_len; 4285 q = p + strlen ("%(VALUE)"); 4286 } 4287 strcpy (tmp_spec_p, q); 4288 4289 do_self_spec (tmp_spec); 4290 } 4291 4292 /* Process the given spec string and add any new options to the end 4293 of the switches/n_switches array. */ 4294 4295 static void 4296 do_self_spec (const char *spec) 4297 { 4298 int i; 4299 4300 do_spec_2 (spec); 4301 do_spec_1 (" ", 0, NULL); 4302 4303 /* Mark %<S switches processed by do_self_spec to be ignored permanently. 4304 do_self_specs adds the replacements to switches array, so it shouldn't 4305 be processed afterwards. */ 4306 for (i = 0; i < n_switches; i++) 4307 if ((switches[i].live_cond & SWITCH_IGNORE)) 4308 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY; 4309 4310 if (VEC_length (const_char_p, argbuf) > 0) 4311 { 4312 const char **argbuf_copy; 4313 struct cl_decoded_option *decoded_options; 4314 struct cl_option_handlers handlers; 4315 unsigned int decoded_options_count; 4316 unsigned int j; 4317 4318 /* Create a copy of argbuf with a dummy argv[0] entry for 4319 decode_cmdline_options_to_array. */ 4320 argbuf_copy = XNEWVEC (const char *, 4321 VEC_length (const_char_p, argbuf) + 1); 4322 argbuf_copy[0] = ""; 4323 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf), 4324 VEC_length (const_char_p, argbuf) * sizeof (const char *)); 4325 4326 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1, 4327 argbuf_copy, 4328 CL_DRIVER, &decoded_options, 4329 &decoded_options_count); 4330 4331 set_option_handlers (&handlers); 4332 4333 for (j = 1; j < decoded_options_count; j++) 4334 { 4335 switch (decoded_options[j].opt_index) 4336 { 4337 case OPT_SPECIAL_input_file: 4338 /* Specs should only generate options, not input 4339 files. */ 4340 if (strcmp (decoded_options[j].arg, "-") != 0) 4341 fatal_error ("switch %qs does not start with %<-%>", 4342 decoded_options[j].arg); 4343 else 4344 fatal_error ("spec-generated switch is just %<-%>"); 4345 break; 4346 4347 case OPT_fcompare_debug_second: 4348 case OPT_fcompare_debug: 4349 case OPT_fcompare_debug_: 4350 case OPT_o: 4351 /* Avoid duplicate processing of some options from 4352 compare-debug specs; just save them here. */ 4353 save_switch (decoded_options[j].canonical_option[0], 4354 (decoded_options[j].canonical_option_num_elements 4355 - 1), 4356 &decoded_options[j].canonical_option[1], false); 4357 break; 4358 4359 default: 4360 read_cmdline_option (&global_options, &global_options_set, 4361 decoded_options + j, UNKNOWN_LOCATION, 4362 CL_DRIVER, &handlers, global_dc); 4363 break; 4364 } 4365 } 4366 4367 alloc_switch (); 4368 switches[n_switches].part1 = 0; 4369 } 4370 } 4371 4372 /* Callback for processing %D and %I specs. */ 4373 4374 struct spec_path_info { 4375 const char *option; 4376 const char *append; 4377 size_t append_len; 4378 bool omit_relative; 4379 bool separate_options; 4380 }; 4381 4382 static void * 4383 spec_path (char *path, void *data) 4384 { 4385 struct spec_path_info *info = (struct spec_path_info *) data; 4386 size_t len = 0; 4387 char save = 0; 4388 4389 if (info->omit_relative && !IS_ABSOLUTE_PATH (path)) 4390 return NULL; 4391 4392 if (info->append_len != 0) 4393 { 4394 len = strlen (path); 4395 memcpy (path + len, info->append, info->append_len + 1); 4396 } 4397 4398 if (!is_directory (path, true)) 4399 return NULL; 4400 4401 do_spec_1 (info->option, 1, NULL); 4402 if (info->separate_options) 4403 do_spec_1 (" ", 0, NULL); 4404 4405 if (info->append_len == 0) 4406 { 4407 len = strlen (path); 4408 save = path[len - 1]; 4409 if (IS_DIR_SEPARATOR (path[len - 1])) 4410 path[len - 1] = '\0'; 4411 } 4412 4413 do_spec_1 (path, 1, NULL); 4414 do_spec_1 (" ", 0, NULL); 4415 4416 /* Must not damage the original path. */ 4417 if (info->append_len == 0) 4418 path[len - 1] = save; 4419 4420 return NULL; 4421 } 4422 4423 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the 4424 argument list. */ 4425 4426 static void 4427 create_at_file (char **argv) 4428 { 4429 char *temp_file = make_temp_file (""); 4430 char *at_argument = concat ("@", temp_file, NULL); 4431 FILE *f = fopen (temp_file, "w"); 4432 int status; 4433 4434 if (f == NULL) 4435 fatal_error ("could not open temporary response file %s", 4436 temp_file); 4437 4438 status = writeargv (argv, f); 4439 4440 if (status) 4441 fatal_error ("could not write to temporary response file %s", 4442 temp_file); 4443 4444 status = fclose (f); 4445 4446 if (EOF == status) 4447 fatal_error ("could not close temporary response file %s", 4448 temp_file); 4449 4450 store_arg (at_argument, 0, 0); 4451 4452 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag); 4453 } 4454 4455 /* True if we should compile INFILE. */ 4456 4457 static bool 4458 compile_input_file_p (struct infile *infile) 4459 { 4460 if ((!infile->language) || (infile->language[0] != '*')) 4461 if (infile->incompiler == input_file_compiler) 4462 return true; 4463 return false; 4464 } 4465 4466 /* Process each member of VEC as a spec. */ 4467 4468 static void 4469 do_specs_vec (VEC(char_p,heap) *vec) 4470 { 4471 unsigned ix; 4472 char *opt; 4473 4474 FOR_EACH_VEC_ELT (char_p, vec, ix, opt) 4475 { 4476 do_spec_1 (opt, 1, NULL); 4477 /* Make each accumulated option a separate argument. */ 4478 do_spec_1 (" ", 0, NULL); 4479 } 4480 } 4481 4482 /* Process the sub-spec SPEC as a portion of a larger spec. 4483 This is like processing a whole spec except that we do 4484 not initialize at the beginning and we do not supply a 4485 newline by default at the end. 4486 INSWITCH nonzero means don't process %-sequences in SPEC; 4487 in this case, % is treated as an ordinary character. 4488 This is used while substituting switches. 4489 INSWITCH nonzero also causes SPC not to terminate an argument. 4490 4491 Value is zero unless a line was finished 4492 and the command on that line reported an error. */ 4493 4494 static int 4495 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) 4496 { 4497 const char *p = spec; 4498 int c; 4499 int i; 4500 int value; 4501 4502 /* If it's an empty string argument to a switch, keep it as is. */ 4503 if (inswitch && !*p) 4504 arg_going = 1; 4505 4506 while ((c = *p++)) 4507 /* If substituting a switch, treat all chars like letters. 4508 Otherwise, NL, SPC, TAB and % are special. */ 4509 switch (inswitch ? 'a' : c) 4510 { 4511 case '\n': 4512 end_going_arg (); 4513 4514 if (VEC_length (const_char_p, argbuf) > 0 4515 && !strcmp (VEC_last (const_char_p, argbuf), "|")) 4516 { 4517 /* A `|' before the newline means use a pipe here, 4518 but only if -pipe was specified. 4519 Otherwise, execute now and don't pass the `|' as an arg. */ 4520 if (use_pipes) 4521 { 4522 input_from_pipe = 1; 4523 break; 4524 } 4525 else 4526 VEC_pop (const_char_p, argbuf); 4527 } 4528 4529 set_collect_gcc_options (); 4530 4531 if (VEC_length (const_char_p, argbuf) > 0) 4532 { 4533 value = execute (); 4534 if (value) 4535 return value; 4536 } 4537 /* Reinitialize for a new command, and for a new argument. */ 4538 clear_args (); 4539 arg_going = 0; 4540 delete_this_arg = 0; 4541 this_is_output_file = 0; 4542 this_is_library_file = 0; 4543 this_is_linker_script = 0; 4544 input_from_pipe = 0; 4545 break; 4546 4547 case '|': 4548 end_going_arg (); 4549 4550 /* Use pipe */ 4551 obstack_1grow (&obstack, c); 4552 arg_going = 1; 4553 break; 4554 4555 case '\t': 4556 case ' ': 4557 end_going_arg (); 4558 4559 /* Reinitialize for a new argument. */ 4560 delete_this_arg = 0; 4561 this_is_output_file = 0; 4562 this_is_library_file = 0; 4563 this_is_linker_script = 0; 4564 break; 4565 4566 case '%': 4567 switch (c = *p++) 4568 { 4569 case 0: 4570 fatal_error ("spec %qs invalid", spec); 4571 4572 case 'b': 4573 if (save_temps_length) 4574 obstack_grow (&obstack, save_temps_prefix, save_temps_length); 4575 else 4576 obstack_grow (&obstack, input_basename, basename_length); 4577 if (compare_debug < 0) 4578 obstack_grow (&obstack, ".gk", 3); 4579 arg_going = 1; 4580 break; 4581 4582 case 'B': 4583 if (save_temps_length) 4584 obstack_grow (&obstack, save_temps_prefix, save_temps_length); 4585 else 4586 obstack_grow (&obstack, input_basename, suffixed_basename_length); 4587 if (compare_debug < 0) 4588 obstack_grow (&obstack, ".gk", 3); 4589 arg_going = 1; 4590 break; 4591 4592 case 'd': 4593 delete_this_arg = 2; 4594 break; 4595 4596 /* Dump out the directories specified with LIBRARY_PATH, 4597 followed by the absolute directories 4598 that we search for startfiles. */ 4599 case 'D': 4600 { 4601 struct spec_path_info info; 4602 4603 info.option = "-L"; 4604 info.append_len = 0; 4605 #ifdef RELATIVE_PREFIX_NOT_LINKDIR 4606 /* Used on systems which record the specified -L dirs 4607 and use them to search for dynamic linking. 4608 Relative directories always come from -B, 4609 and it is better not to use them for searching 4610 at run time. In particular, stage1 loses. */ 4611 info.omit_relative = true; 4612 #else 4613 info.omit_relative = false; 4614 #endif 4615 info.separate_options = false; 4616 4617 for_each_path (&startfile_prefixes, true, 0, spec_path, &info); 4618 } 4619 break; 4620 4621 case 'e': 4622 /* %efoo means report an error with `foo' as error message 4623 and don't execute any more commands for this file. */ 4624 { 4625 const char *q = p; 4626 char *buf; 4627 while (*p != 0 && *p != '\n') 4628 p++; 4629 buf = (char *) alloca (p - q + 1); 4630 strncpy (buf, q, p - q); 4631 buf[p - q] = 0; 4632 error ("%s", _(buf)); 4633 return -1; 4634 } 4635 break; 4636 case 'n': 4637 /* %nfoo means report a notice with `foo' on stderr. */ 4638 { 4639 const char *q = p; 4640 char *buf; 4641 while (*p != 0 && *p != '\n') 4642 p++; 4643 buf = (char *) alloca (p - q + 1); 4644 strncpy (buf, q, p - q); 4645 buf[p - q] = 0; 4646 inform (0, "%s", _(buf)); 4647 if (*p) 4648 p++; 4649 } 4650 break; 4651 4652 case 'j': 4653 { 4654 struct stat st; 4655 4656 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is 4657 defined, and it is not a directory, and it is 4658 writable, use it. Otherwise, treat this like any 4659 other temporary file. */ 4660 4661 if ((!save_temps_flag) 4662 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode)) 4663 && (access (HOST_BIT_BUCKET, W_OK) == 0)) 4664 { 4665 obstack_grow (&obstack, HOST_BIT_BUCKET, 4666 strlen (HOST_BIT_BUCKET)); 4667 delete_this_arg = 0; 4668 arg_going = 1; 4669 break; 4670 } 4671 } 4672 goto create_temp_file; 4673 case '|': 4674 if (use_pipes) 4675 { 4676 obstack_1grow (&obstack, '-'); 4677 delete_this_arg = 0; 4678 arg_going = 1; 4679 4680 /* consume suffix */ 4681 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4682 p++; 4683 if (p[0] == '%' && p[1] == 'O') 4684 p += 2; 4685 4686 break; 4687 } 4688 goto create_temp_file; 4689 case 'm': 4690 if (use_pipes) 4691 { 4692 /* consume suffix */ 4693 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4694 p++; 4695 if (p[0] == '%' && p[1] == 'O') 4696 p += 2; 4697 4698 break; 4699 } 4700 goto create_temp_file; 4701 case 'g': 4702 case 'u': 4703 case 'U': 4704 create_temp_file: 4705 { 4706 struct temp_name *t; 4707 int suffix_length; 4708 const char *suffix = p; 4709 char *saved_suffix = NULL; 4710 4711 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4712 p++; 4713 suffix_length = p - suffix; 4714 if (p[0] == '%' && p[1] == 'O') 4715 { 4716 p += 2; 4717 /* We don't support extra suffix characters after %O. */ 4718 if (*p == '.' || ISALNUM ((unsigned char) *p)) 4719 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p); 4720 if (suffix_length == 0) 4721 suffix = TARGET_OBJECT_SUFFIX; 4722 else 4723 { 4724 saved_suffix 4725 = XNEWVEC (char, suffix_length 4726 + strlen (TARGET_OBJECT_SUFFIX)); 4727 strncpy (saved_suffix, suffix, suffix_length); 4728 strcpy (saved_suffix + suffix_length, 4729 TARGET_OBJECT_SUFFIX); 4730 } 4731 suffix_length += strlen (TARGET_OBJECT_SUFFIX); 4732 } 4733 4734 if (compare_debug < 0) 4735 { 4736 suffix = concat (".gk", suffix, NULL); 4737 suffix_length += 3; 4738 } 4739 4740 /* If -save-temps=obj and -o were specified, use that for the 4741 temp file. */ 4742 if (save_temps_length) 4743 { 4744 char *tmp; 4745 temp_filename_length 4746 = save_temps_length + suffix_length + 1; 4747 tmp = (char *) alloca (temp_filename_length); 4748 memcpy (tmp, save_temps_prefix, save_temps_length); 4749 memcpy (tmp + save_temps_length, suffix, suffix_length); 4750 tmp[save_temps_length + suffix_length] = '\0'; 4751 temp_filename = save_string (tmp, 4752 temp_filename_length + 1); 4753 obstack_grow (&obstack, temp_filename, 4754 temp_filename_length); 4755 arg_going = 1; 4756 delete_this_arg = 0; 4757 break; 4758 } 4759 4760 /* If the gcc_input_filename has the same suffix specified 4761 for the %g, %u, or %U, and -save-temps is specified, 4762 we could end up using that file as an intermediate 4763 thus clobbering the user's source file (.e.g., 4764 gcc -save-temps foo.s would clobber foo.s with the 4765 output of cpp0). So check for this condition and 4766 generate a temp file as the intermediate. */ 4767 4768 if (save_temps_flag) 4769 { 4770 char *tmp; 4771 temp_filename_length = basename_length + suffix_length + 1; 4772 tmp = (char *) alloca (temp_filename_length); 4773 memcpy (tmp, input_basename, basename_length); 4774 memcpy (tmp + basename_length, suffix, suffix_length); 4775 tmp[basename_length + suffix_length] = '\0'; 4776 temp_filename = tmp; 4777 4778 if (filename_cmp (temp_filename, gcc_input_filename) != 0) 4779 { 4780 #ifndef HOST_LACKS_INODE_NUMBERS 4781 struct stat st_temp; 4782 4783 /* Note, set_input() resets input_stat_set to 0. */ 4784 if (input_stat_set == 0) 4785 { 4786 input_stat_set = stat (gcc_input_filename, 4787 &input_stat); 4788 if (input_stat_set >= 0) 4789 input_stat_set = 1; 4790 } 4791 4792 /* If we have the stat for the gcc_input_filename 4793 and we can do the stat for the temp_filename 4794 then the they could still refer to the same 4795 file if st_dev/st_ino's are the same. */ 4796 if (input_stat_set != 1 4797 || stat (temp_filename, &st_temp) < 0 4798 || input_stat.st_dev != st_temp.st_dev 4799 || input_stat.st_ino != st_temp.st_ino) 4800 #else 4801 /* Just compare canonical pathnames. */ 4802 char* input_realname = lrealpath (gcc_input_filename); 4803 char* temp_realname = lrealpath (temp_filename); 4804 bool files_differ = filename_cmp (input_realname, temp_realname); 4805 free (input_realname); 4806 free (temp_realname); 4807 if (files_differ) 4808 #endif 4809 { 4810 temp_filename = save_string (temp_filename, 4811 temp_filename_length + 1); 4812 obstack_grow (&obstack, temp_filename, 4813 temp_filename_length); 4814 arg_going = 1; 4815 delete_this_arg = 0; 4816 break; 4817 } 4818 } 4819 } 4820 4821 /* See if we already have an association of %g/%u/%U and 4822 suffix. */ 4823 for (t = temp_names; t; t = t->next) 4824 if (t->length == suffix_length 4825 && strncmp (t->suffix, suffix, suffix_length) == 0 4826 && t->unique == (c == 'u' || c == 'U' || c == 'j')) 4827 break; 4828 4829 /* Make a new association if needed. %u and %j 4830 require one. */ 4831 if (t == 0 || c == 'u' || c == 'j') 4832 { 4833 if (t == 0) 4834 { 4835 t = XNEW (struct temp_name); 4836 t->next = temp_names; 4837 temp_names = t; 4838 } 4839 t->length = suffix_length; 4840 if (saved_suffix) 4841 { 4842 t->suffix = saved_suffix; 4843 saved_suffix = NULL; 4844 } 4845 else 4846 t->suffix = save_string (suffix, suffix_length); 4847 t->unique = (c == 'u' || c == 'U' || c == 'j'); 4848 temp_filename = make_temp_file (t->suffix); 4849 temp_filename_length = strlen (temp_filename); 4850 t->filename = temp_filename; 4851 t->filename_length = temp_filename_length; 4852 } 4853 4854 free (saved_suffix); 4855 4856 obstack_grow (&obstack, t->filename, t->filename_length); 4857 delete_this_arg = 1; 4858 } 4859 arg_going = 1; 4860 break; 4861 4862 case 'i': 4863 if (combine_inputs) 4864 { 4865 if (at_file_supplied) 4866 { 4867 /* We are going to expand `%i' to `@FILE', where FILE 4868 is a newly-created temporary filename. The filenames 4869 that would usually be expanded in place of %o will be 4870 written to the temporary file. */ 4871 char **argv; 4872 int n_files = 0; 4873 int j; 4874 4875 for (i = 0; i < n_infiles; i++) 4876 if (compile_input_file_p (&infiles[i])) 4877 n_files++; 4878 4879 argv = (char **) alloca (sizeof (char *) * (n_files + 1)); 4880 4881 /* Copy the strings over. */ 4882 for (i = 0, j = 0; i < n_infiles; i++) 4883 if (compile_input_file_p (&infiles[i])) 4884 { 4885 argv[j] = CONST_CAST (char *, infiles[i].name); 4886 infiles[i].compiled = true; 4887 j++; 4888 } 4889 argv[j] = NULL; 4890 4891 create_at_file (argv); 4892 } 4893 else 4894 for (i = 0; (int) i < n_infiles; i++) 4895 if (compile_input_file_p (&infiles[i])) 4896 { 4897 store_arg (infiles[i].name, 0, 0); 4898 infiles[i].compiled = true; 4899 } 4900 } 4901 else 4902 { 4903 obstack_grow (&obstack, gcc_input_filename, 4904 input_filename_length); 4905 arg_going = 1; 4906 } 4907 break; 4908 4909 case 'I': 4910 { 4911 struct spec_path_info info; 4912 4913 if (multilib_dir) 4914 { 4915 do_spec_1 ("-imultilib", 1, NULL); 4916 /* Make this a separate argument. */ 4917 do_spec_1 (" ", 0, NULL); 4918 do_spec_1 (multilib_dir, 1, NULL); 4919 do_spec_1 (" ", 0, NULL); 4920 } 4921 4922 if (multiarch_dir) 4923 { 4924 do_spec_1 ("-imultiarch", 1, NULL); 4925 /* Make this a separate argument. */ 4926 do_spec_1 (" ", 0, NULL); 4927 do_spec_1 (multiarch_dir, 1, NULL); 4928 do_spec_1 (" ", 0, NULL); 4929 } 4930 4931 if (gcc_exec_prefix) 4932 { 4933 do_spec_1 ("-iprefix", 1, NULL); 4934 /* Make this a separate argument. */ 4935 do_spec_1 (" ", 0, NULL); 4936 do_spec_1 (gcc_exec_prefix, 1, NULL); 4937 do_spec_1 (" ", 0, NULL); 4938 } 4939 4940 if (target_system_root_changed || 4941 (target_system_root && target_sysroot_hdrs_suffix)) 4942 { 4943 do_spec_1 ("-isysroot", 1, NULL); 4944 /* Make this a separate argument. */ 4945 do_spec_1 (" ", 0, NULL); 4946 do_spec_1 (target_system_root, 1, NULL); 4947 if (target_sysroot_hdrs_suffix) 4948 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL); 4949 do_spec_1 (" ", 0, NULL); 4950 } 4951 4952 info.option = "-isystem"; 4953 info.append = "include"; 4954 info.append_len = strlen (info.append); 4955 info.omit_relative = false; 4956 info.separate_options = true; 4957 4958 for_each_path (&include_prefixes, false, info.append_len, 4959 spec_path, &info); 4960 4961 info.append = "include-fixed"; 4962 if (*sysroot_hdrs_suffix_spec) 4963 info.append = concat (info.append, dir_separator_str, 4964 multilib_dir, NULL); 4965 info.append_len = strlen (info.append); 4966 for_each_path (&include_prefixes, false, info.append_len, 4967 spec_path, &info); 4968 } 4969 break; 4970 4971 case 'o': 4972 { 4973 int max = n_infiles; 4974 max += lang_specific_extra_outfiles; 4975 4976 if (HAVE_GNU_LD && at_file_supplied) 4977 { 4978 /* We are going to expand `%o' to `@FILE', where FILE 4979 is a newly-created temporary filename. The filenames 4980 that would usually be expanded in place of %o will be 4981 written to the temporary file. */ 4982 4983 char **argv; 4984 int n_files, j; 4985 4986 /* Convert OUTFILES into a form suitable for writeargv. */ 4987 4988 /* Determine how many are non-NULL. */ 4989 for (n_files = 0, i = 0; i < max; i++) 4990 n_files += outfiles[i] != NULL; 4991 4992 argv = (char **) alloca (sizeof (char *) * (n_files + 1)); 4993 4994 /* Copy the strings over. */ 4995 for (i = 0, j = 0; i < max; i++) 4996 if (outfiles[i]) 4997 { 4998 argv[j] = CONST_CAST (char *, outfiles[i]); 4999 j++; 5000 } 5001 argv[j] = NULL; 5002 5003 create_at_file (argv); 5004 } 5005 else 5006 for (i = 0; i < max; i++) 5007 if (outfiles[i]) 5008 store_arg (outfiles[i], 0, 0); 5009 break; 5010 } 5011 5012 case 'O': 5013 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 5014 arg_going = 1; 5015 break; 5016 5017 case 's': 5018 this_is_library_file = 1; 5019 break; 5020 5021 case 'T': 5022 this_is_linker_script = 1; 5023 break; 5024 5025 case 'V': 5026 outfiles[input_file_number] = NULL; 5027 break; 5028 5029 case 'w': 5030 this_is_output_file = 1; 5031 break; 5032 5033 case 'W': 5034 { 5035 unsigned int cur_index = VEC_length (const_char_p, argbuf); 5036 /* Handle the {...} following the %W. */ 5037 if (*p != '{') 5038 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p); 5039 p = handle_braces (p + 1); 5040 if (p == 0) 5041 return -1; 5042 end_going_arg (); 5043 /* If any args were output, mark the last one for deletion 5044 on failure. */ 5045 if (VEC_length (const_char_p, argbuf) != cur_index) 5046 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1); 5047 break; 5048 } 5049 5050 /* %x{OPTION} records OPTION for %X to output. */ 5051 case 'x': 5052 { 5053 const char *p1 = p; 5054 char *string; 5055 char *opt; 5056 unsigned ix; 5057 5058 /* Skip past the option value and make a copy. */ 5059 if (*p != '{') 5060 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p); 5061 while (*p++ != '}') 5062 ; 5063 string = save_string (p1 + 1, p - p1 - 2); 5064 5065 /* See if we already recorded this option. */ 5066 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt) 5067 if (! strcmp (string, opt)) 5068 { 5069 free (string); 5070 return 0; 5071 } 5072 5073 /* This option is new; add it. */ 5074 add_linker_option (string, strlen (string)); 5075 } 5076 break; 5077 5078 /* Dump out the options accumulated previously using %x. */ 5079 case 'X': 5080 do_specs_vec (linker_options); 5081 break; 5082 5083 /* Dump out the options accumulated previously using -Wa,. */ 5084 case 'Y': 5085 do_specs_vec (assembler_options); 5086 break; 5087 5088 /* Dump out the options accumulated previously using -Wp,. */ 5089 case 'Z': 5090 do_specs_vec (preprocessor_options); 5091 break; 5092 5093 /* Here are digits and numbers that just process 5094 a certain constant string as a spec. */ 5095 5096 case '1': 5097 value = do_spec_1 (cc1_spec, 0, NULL); 5098 if (value != 0) 5099 return value; 5100 break; 5101 5102 case '2': 5103 value = do_spec_1 (cc1plus_spec, 0, NULL); 5104 if (value != 0) 5105 return value; 5106 break; 5107 5108 case 'a': 5109 value = do_spec_1 (asm_spec, 0, NULL); 5110 if (value != 0) 5111 return value; 5112 break; 5113 5114 case 'A': 5115 value = do_spec_1 (asm_final_spec, 0, NULL); 5116 if (value != 0) 5117 return value; 5118 break; 5119 5120 case 'C': 5121 { 5122 const char *const spec 5123 = (input_file_compiler->cpp_spec 5124 ? input_file_compiler->cpp_spec 5125 : cpp_spec); 5126 value = do_spec_1 (spec, 0, NULL); 5127 if (value != 0) 5128 return value; 5129 } 5130 break; 5131 5132 case 'E': 5133 value = do_spec_1 (endfile_spec, 0, NULL); 5134 if (value != 0) 5135 return value; 5136 break; 5137 5138 case 'l': 5139 value = do_spec_1 (link_spec, 0, NULL); 5140 if (value != 0) 5141 return value; 5142 break; 5143 5144 case 'L': 5145 value = do_spec_1 (lib_spec, 0, NULL); 5146 if (value != 0) 5147 return value; 5148 break; 5149 5150 case 'G': 5151 value = do_spec_1 (libgcc_spec, 0, NULL); 5152 if (value != 0) 5153 return value; 5154 break; 5155 5156 case 'R': 5157 /* We assume there is a directory 5158 separator at the end of this string. */ 5159 if (target_system_root) 5160 { 5161 obstack_grow (&obstack, target_system_root, 5162 strlen (target_system_root)); 5163 if (target_sysroot_suffix) 5164 obstack_grow (&obstack, target_sysroot_suffix, 5165 strlen (target_sysroot_suffix)); 5166 } 5167 break; 5168 5169 case 'S': 5170 value = do_spec_1 (startfile_spec, 0, NULL); 5171 if (value != 0) 5172 return value; 5173 break; 5174 5175 /* Here we define characters other than letters and digits. */ 5176 5177 case '{': 5178 p = handle_braces (p); 5179 if (p == 0) 5180 return -1; 5181 break; 5182 5183 case ':': 5184 p = handle_spec_function (p); 5185 if (p == 0) 5186 return -1; 5187 break; 5188 5189 case '%': 5190 obstack_1grow (&obstack, '%'); 5191 break; 5192 5193 case '.': 5194 { 5195 unsigned len = 0; 5196 5197 while (p[len] && p[len] != ' ' && p[len] != '%') 5198 len++; 5199 suffix_subst = save_string (p - 1, len + 1); 5200 p += len; 5201 } 5202 break; 5203 5204 /* Henceforth ignore the option(s) matching the pattern 5205 after the %<. */ 5206 case '<': 5207 case '>': 5208 { 5209 unsigned len = 0; 5210 int have_wildcard = 0; 5211 int i; 5212 int switch_option; 5213 5214 if (c == '>') 5215 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC; 5216 else 5217 switch_option = SWITCH_IGNORE; 5218 5219 while (p[len] && p[len] != ' ' && p[len] != '\t') 5220 len++; 5221 5222 if (p[len-1] == '*') 5223 have_wildcard = 1; 5224 5225 for (i = 0; i < n_switches; i++) 5226 if (!strncmp (switches[i].part1, p, len - have_wildcard) 5227 && (have_wildcard || switches[i].part1[len] == '\0')) 5228 { 5229 switches[i].live_cond |= switch_option; 5230 switches[i].validated = 1; 5231 } 5232 5233 p += len; 5234 } 5235 break; 5236 5237 case '*': 5238 if (soft_matched_part) 5239 { 5240 if (soft_matched_part[0]) 5241 do_spec_1 (soft_matched_part, 1, NULL); 5242 do_spec_1 (" ", 0, NULL); 5243 } 5244 else 5245 /* Catch the case where a spec string contains something like 5246 '%{foo:%*}'. i.e. there is no * in the pattern on the left 5247 hand side of the :. */ 5248 error ("spec failure: %<%%*%> has not been initialized by pattern match"); 5249 break; 5250 5251 /* Process a string found as the value of a spec given by name. 5252 This feature allows individual machine descriptions 5253 to add and use their own specs. */ 5254 case '(': 5255 { 5256 const char *name = p; 5257 struct spec_list *sl; 5258 int len; 5259 5260 /* The string after the S/P is the name of a spec that is to be 5261 processed. */ 5262 while (*p && *p != ')') 5263 p++; 5264 5265 /* See if it's in the list. */ 5266 for (len = p - name, sl = specs; sl; sl = sl->next) 5267 if (sl->name_len == len && !strncmp (sl->name, name, len)) 5268 { 5269 name = *(sl->ptr_spec); 5270 #ifdef DEBUG_SPECS 5271 fnotice (stderr, "Processing spec (%s), which is '%s'\n", 5272 sl->name, name); 5273 #endif 5274 break; 5275 } 5276 5277 if (sl) 5278 { 5279 value = do_spec_1 (name, 0, NULL); 5280 if (value != 0) 5281 return value; 5282 } 5283 5284 /* Discard the closing paren. */ 5285 if (*p) 5286 p++; 5287 } 5288 break; 5289 5290 default: 5291 error ("spec failure: unrecognized spec option %qc", c); 5292 break; 5293 } 5294 break; 5295 5296 case '\\': 5297 /* Backslash: treat next character as ordinary. */ 5298 c = *p++; 5299 5300 /* Fall through. */ 5301 default: 5302 /* Ordinary character: put it into the current argument. */ 5303 obstack_1grow (&obstack, c); 5304 arg_going = 1; 5305 } 5306 5307 /* End of string. If we are processing a spec function, we need to 5308 end any pending argument. */ 5309 if (processing_spec_function) 5310 end_going_arg (); 5311 5312 return 0; 5313 } 5314 5315 /* Look up a spec function. */ 5316 5317 static const struct spec_function * 5318 lookup_spec_function (const char *name) 5319 { 5320 const struct spec_function *sf; 5321 5322 for (sf = static_spec_functions; sf->name != NULL; sf++) 5323 if (strcmp (sf->name, name) == 0) 5324 return sf; 5325 5326 return NULL; 5327 } 5328 5329 /* Evaluate a spec function. */ 5330 5331 static const char * 5332 eval_spec_function (const char *func, const char *args) 5333 { 5334 const struct spec_function *sf; 5335 const char *funcval; 5336 5337 /* Saved spec processing context. */ 5338 VEC(const_char_p,heap) *save_argbuf; 5339 5340 int save_arg_going; 5341 int save_delete_this_arg; 5342 int save_this_is_output_file; 5343 int save_this_is_library_file; 5344 int save_input_from_pipe; 5345 int save_this_is_linker_script; 5346 const char *save_suffix_subst; 5347 5348 5349 sf = lookup_spec_function (func); 5350 if (sf == NULL) 5351 fatal_error ("unknown spec function %qs", func); 5352 5353 /* Push the spec processing context. */ 5354 save_argbuf = argbuf; 5355 5356 save_arg_going = arg_going; 5357 save_delete_this_arg = delete_this_arg; 5358 save_this_is_output_file = this_is_output_file; 5359 save_this_is_library_file = this_is_library_file; 5360 save_this_is_linker_script = this_is_linker_script; 5361 save_input_from_pipe = input_from_pipe; 5362 save_suffix_subst = suffix_subst; 5363 5364 /* Create a new spec processing context, and build the function 5365 arguments. */ 5366 5367 alloc_args (); 5368 if (do_spec_2 (args) < 0) 5369 fatal_error ("error in args to spec function %qs", func); 5370 5371 /* argbuf_index is an index for the next argument to be inserted, and 5372 so contains the count of the args already inserted. */ 5373 5374 funcval = (*sf->func) (VEC_length (const_char_p, argbuf), 5375 VEC_address (const_char_p, argbuf)); 5376 5377 /* Pop the spec processing context. */ 5378 VEC_free (const_char_p, heap, argbuf); 5379 argbuf = save_argbuf; 5380 5381 arg_going = save_arg_going; 5382 delete_this_arg = save_delete_this_arg; 5383 this_is_output_file = save_this_is_output_file; 5384 this_is_library_file = save_this_is_library_file; 5385 this_is_linker_script = save_this_is_linker_script; 5386 input_from_pipe = save_input_from_pipe; 5387 suffix_subst = save_suffix_subst; 5388 5389 return funcval; 5390 } 5391 5392 /* Handle a spec function call of the form: 5393 5394 %:function(args) 5395 5396 ARGS is processed as a spec in a separate context and split into an 5397 argument vector in the normal fashion. The function returns a string 5398 containing a spec which we then process in the caller's context, or 5399 NULL if no processing is required. */ 5400 5401 static const char * 5402 handle_spec_function (const char *p) 5403 { 5404 char *func, *args; 5405 const char *endp, *funcval; 5406 int count; 5407 5408 processing_spec_function++; 5409 5410 /* Get the function name. */ 5411 for (endp = p; *endp != '\0'; endp++) 5412 { 5413 if (*endp == '(') /* ) */ 5414 break; 5415 /* Only allow [A-Za-z0-9], -, and _ in function names. */ 5416 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_')) 5417 fatal_error ("malformed spec function name"); 5418 } 5419 if (*endp != '(') /* ) */ 5420 fatal_error ("no arguments for spec function"); 5421 func = save_string (p, endp - p); 5422 p = ++endp; 5423 5424 /* Get the arguments. */ 5425 for (count = 0; *endp != '\0'; endp++) 5426 { 5427 /* ( */ 5428 if (*endp == ')') 5429 { 5430 if (count == 0) 5431 break; 5432 count--; 5433 } 5434 else if (*endp == '(') /* ) */ 5435 count++; 5436 } 5437 /* ( */ 5438 if (*endp != ')') 5439 fatal_error ("malformed spec function arguments"); 5440 args = save_string (p, endp - p); 5441 p = ++endp; 5442 5443 /* p now points to just past the end of the spec function expression. */ 5444 5445 funcval = eval_spec_function (func, args); 5446 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0) 5447 p = NULL; 5448 5449 free (func); 5450 free (args); 5451 5452 processing_spec_function--; 5453 5454 return p; 5455 } 5456 5457 /* Inline subroutine of handle_braces. Returns true if the current 5458 input suffix matches the atom bracketed by ATOM and END_ATOM. */ 5459 static inline bool 5460 input_suffix_matches (const char *atom, const char *end_atom) 5461 { 5462 return (input_suffix 5463 && !strncmp (input_suffix, atom, end_atom - atom) 5464 && input_suffix[end_atom - atom] == '\0'); 5465 } 5466 5467 /* Subroutine of handle_braces. Returns true if the current 5468 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */ 5469 static bool 5470 input_spec_matches (const char *atom, const char *end_atom) 5471 { 5472 return (input_file_compiler 5473 && input_file_compiler->suffix 5474 && input_file_compiler->suffix[0] != '\0' 5475 && !strncmp (input_file_compiler->suffix + 1, atom, 5476 end_atom - atom) 5477 && input_file_compiler->suffix[end_atom - atom + 1] == '\0'); 5478 } 5479 5480 /* Subroutine of handle_braces. Returns true if a switch 5481 matching the atom bracketed by ATOM and END_ATOM appeared on the 5482 command line. */ 5483 static bool 5484 switch_matches (const char *atom, const char *end_atom, int starred) 5485 { 5486 int i; 5487 int len = end_atom - atom; 5488 int plen = starred ? len : -1; 5489 5490 for (i = 0; i < n_switches; i++) 5491 if (!strncmp (switches[i].part1, atom, len) 5492 && (starred || switches[i].part1[len] == '\0') 5493 && check_live_switch (i, plen)) 5494 return true; 5495 5496 /* Check if a switch with separated form matching the atom. 5497 We check -D and -U switches. */ 5498 else if (switches[i].args != 0) 5499 { 5500 if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U') 5501 && *switches[i].part1 == atom[0]) 5502 { 5503 if (!strncmp (switches[i].args[0], &atom[1], len - 1) 5504 && (starred || (switches[i].part1[1] == '\0' 5505 && switches[i].args[0][len - 1] == '\0')) 5506 && check_live_switch (i, (starred ? 1 : -1))) 5507 return true; 5508 } 5509 } 5510 5511 return false; 5512 } 5513 5514 /* Inline subroutine of handle_braces. Mark all of the switches which 5515 match ATOM (extends to END_ATOM; STARRED indicates whether there 5516 was a star after the atom) for later processing. */ 5517 static inline void 5518 mark_matching_switches (const char *atom, const char *end_atom, int starred) 5519 { 5520 int i; 5521 int len = end_atom - atom; 5522 int plen = starred ? len : -1; 5523 5524 for (i = 0; i < n_switches; i++) 5525 if (!strncmp (switches[i].part1, atom, len) 5526 && (starred || switches[i].part1[len] == '\0') 5527 && check_live_switch (i, plen)) 5528 switches[i].ordering = 1; 5529 } 5530 5531 /* Inline subroutine of handle_braces. Process all the currently 5532 marked switches through give_switch, and clear the marks. */ 5533 static inline void 5534 process_marked_switches (void) 5535 { 5536 int i; 5537 5538 for (i = 0; i < n_switches; i++) 5539 if (switches[i].ordering == 1) 5540 { 5541 switches[i].ordering = 0; 5542 give_switch (i, 0); 5543 } 5544 } 5545 5546 /* Handle a %{ ... } construct. P points just inside the leading {. 5547 Returns a pointer one past the end of the brace block, or 0 5548 if we call do_spec_1 and that returns -1. */ 5549 5550 static const char * 5551 handle_braces (const char *p) 5552 { 5553 const char *atom, *end_atom; 5554 const char *d_atom = NULL, *d_end_atom = NULL; 5555 const char *orig = p; 5556 5557 bool a_is_suffix; 5558 bool a_is_spectype; 5559 bool a_is_starred; 5560 bool a_is_negated; 5561 bool a_matched; 5562 5563 bool a_must_be_last = false; 5564 bool ordered_set = false; 5565 bool disjunct_set = false; 5566 bool disj_matched = false; 5567 bool disj_starred = true; 5568 bool n_way_choice = false; 5569 bool n_way_matched = false; 5570 5571 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) 5572 5573 do 5574 { 5575 if (a_must_be_last) 5576 goto invalid; 5577 5578 /* Scan one "atom" (S in the description above of %{}, possibly 5579 with '!', '.', '@', ',', or '*' modifiers). */ 5580 a_matched = false; 5581 a_is_suffix = false; 5582 a_is_starred = false; 5583 a_is_negated = false; 5584 a_is_spectype = false; 5585 5586 SKIP_WHITE(); 5587 if (*p == '!') 5588 p++, a_is_negated = true; 5589 5590 SKIP_WHITE(); 5591 if (*p == '.') 5592 p++, a_is_suffix = true; 5593 else if (*p == ',') 5594 p++, a_is_spectype = true; 5595 5596 atom = p; 5597 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '=' 5598 || *p == ',' || *p == '.' || *p == '@') 5599 p++; 5600 end_atom = p; 5601 5602 if (*p == '*') 5603 p++, a_is_starred = 1; 5604 5605 SKIP_WHITE(); 5606 switch (*p) 5607 { 5608 case '&': case '}': 5609 /* Substitute the switch(es) indicated by the current atom. */ 5610 ordered_set = true; 5611 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix 5612 || a_is_spectype || atom == end_atom) 5613 goto invalid; 5614 5615 mark_matching_switches (atom, end_atom, a_is_starred); 5616 5617 if (*p == '}') 5618 process_marked_switches (); 5619 break; 5620 5621 case '|': case ':': 5622 /* Substitute some text if the current atom appears as a switch 5623 or suffix. */ 5624 disjunct_set = true; 5625 if (ordered_set) 5626 goto invalid; 5627 5628 if (atom == end_atom) 5629 { 5630 if (!n_way_choice || disj_matched || *p == '|' 5631 || a_is_negated || a_is_suffix || a_is_spectype 5632 || a_is_starred) 5633 goto invalid; 5634 5635 /* An empty term may appear as the last choice of an 5636 N-way choice set; it means "otherwise". */ 5637 a_must_be_last = true; 5638 disj_matched = !n_way_matched; 5639 disj_starred = false; 5640 } 5641 else 5642 { 5643 if ((a_is_suffix || a_is_spectype) && a_is_starred) 5644 goto invalid; 5645 5646 if (!a_is_starred) 5647 disj_starred = false; 5648 5649 /* Don't bother testing this atom if we already have a 5650 match. */ 5651 if (!disj_matched && !n_way_matched) 5652 { 5653 if (a_is_suffix) 5654 a_matched = input_suffix_matches (atom, end_atom); 5655 else if (a_is_spectype) 5656 a_matched = input_spec_matches (atom, end_atom); 5657 else 5658 a_matched = switch_matches (atom, end_atom, a_is_starred); 5659 5660 if (a_matched != a_is_negated) 5661 { 5662 disj_matched = true; 5663 d_atom = atom; 5664 d_end_atom = end_atom; 5665 } 5666 } 5667 } 5668 5669 if (*p == ':') 5670 { 5671 /* Found the body, that is, the text to substitute if the 5672 current disjunction matches. */ 5673 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred, 5674 disj_matched && !n_way_matched); 5675 if (p == 0) 5676 return 0; 5677 5678 /* If we have an N-way choice, reset state for the next 5679 disjunction. */ 5680 if (*p == ';') 5681 { 5682 n_way_choice = true; 5683 n_way_matched |= disj_matched; 5684 disj_matched = false; 5685 disj_starred = true; 5686 d_atom = d_end_atom = NULL; 5687 } 5688 } 5689 break; 5690 5691 default: 5692 goto invalid; 5693 } 5694 } 5695 while (*p++ != '}'); 5696 5697 return p; 5698 5699 invalid: 5700 fatal_error ("braced spec %qs is invalid at %qc", orig, *p); 5701 5702 #undef SKIP_WHITE 5703 } 5704 5705 /* Subroutine of handle_braces. Scan and process a brace substitution body 5706 (X in the description of %{} syntax). P points one past the colon; 5707 ATOM and END_ATOM bracket the first atom which was found to be true 5708 (present) in the current disjunction; STARRED indicates whether all 5709 the atoms in the current disjunction were starred (for syntax validation); 5710 MATCHED indicates whether the disjunction matched or not, and therefore 5711 whether or not the body is to be processed through do_spec_1 or just 5712 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1 5713 returns -1. */ 5714 5715 static const char * 5716 process_brace_body (const char *p, const char *atom, const char *end_atom, 5717 int starred, int matched) 5718 { 5719 const char *body, *end_body; 5720 unsigned int nesting_level; 5721 bool have_subst = false; 5722 5723 /* Locate the closing } or ;, honoring nested braces. 5724 Trim trailing whitespace. */ 5725 body = p; 5726 nesting_level = 1; 5727 for (;;) 5728 { 5729 if (*p == '{') 5730 nesting_level++; 5731 else if (*p == '}') 5732 { 5733 if (!--nesting_level) 5734 break; 5735 } 5736 else if (*p == ';' && nesting_level == 1) 5737 break; 5738 else if (*p == '%' && p[1] == '*' && nesting_level == 1) 5739 have_subst = true; 5740 else if (*p == '\0') 5741 goto invalid; 5742 p++; 5743 } 5744 5745 end_body = p; 5746 while (end_body[-1] == ' ' || end_body[-1] == '\t') 5747 end_body--; 5748 5749 if (have_subst && !starred) 5750 goto invalid; 5751 5752 if (matched) 5753 { 5754 /* Copy the substitution body to permanent storage and execute it. 5755 If have_subst is false, this is a simple matter of running the 5756 body through do_spec_1... */ 5757 char *string = save_string (body, end_body - body); 5758 if (!have_subst) 5759 { 5760 if (do_spec_1 (string, 0, NULL) < 0) 5761 return 0; 5762 } 5763 else 5764 { 5765 /* ... but if have_subst is true, we have to process the 5766 body once for each matching switch, with %* set to the 5767 variant part of the switch. */ 5768 unsigned int hard_match_len = end_atom - atom; 5769 int i; 5770 5771 for (i = 0; i < n_switches; i++) 5772 if (!strncmp (switches[i].part1, atom, hard_match_len) 5773 && check_live_switch (i, hard_match_len)) 5774 { 5775 if (do_spec_1 (string, 0, 5776 &switches[i].part1[hard_match_len]) < 0) 5777 return 0; 5778 /* Pass any arguments this switch has. */ 5779 give_switch (i, 1); 5780 suffix_subst = NULL; 5781 } 5782 } 5783 } 5784 5785 return p; 5786 5787 invalid: 5788 fatal_error ("braced spec body %qs is invalid", body); 5789 } 5790 5791 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch 5792 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*} 5793 spec, or -1 if either exact match or %* is used. 5794 5795 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch 5796 whose value does not begin with "no-" is obsoleted by the same value 5797 with the "no-", similarly for a switch with the "no-" prefix. */ 5798 5799 static int 5800 check_live_switch (int switchnum, int prefix_length) 5801 { 5802 const char *name = switches[switchnum].part1; 5803 int i; 5804 5805 /* If we already processed this switch and determined if it was 5806 live or not, return our past determination. */ 5807 if (switches[switchnum].live_cond != 0) 5808 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0 5809 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0 5810 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY) 5811 == 0); 5812 5813 /* In the common case of {<at-most-one-letter>*}, a negating 5814 switch would always match, so ignore that case. We will just 5815 send the conflicting switches to the compiler phase. */ 5816 if (prefix_length >= 0 && prefix_length <= 1) 5817 return 1; 5818 5819 /* Now search for duplicate in a manner that depends on the name. */ 5820 switch (*name) 5821 { 5822 case 'O': 5823 for (i = switchnum + 1; i < n_switches; i++) 5824 if (switches[i].part1[0] == 'O') 5825 { 5826 switches[switchnum].validated = 1; 5827 switches[switchnum].live_cond = SWITCH_FALSE; 5828 return 0; 5829 } 5830 break; 5831 5832 case 'W': case 'f': case 'm': 5833 if (! strncmp (name + 1, "no-", 3)) 5834 { 5835 /* We have Xno-YYY, search for XYYY. */ 5836 for (i = switchnum + 1; i < n_switches; i++) 5837 if (switches[i].part1[0] == name[0] 5838 && ! strcmp (&switches[i].part1[1], &name[4])) 5839 { 5840 switches[switchnum].validated = 1; 5841 switches[switchnum].live_cond = SWITCH_FALSE; 5842 return 0; 5843 } 5844 } 5845 else 5846 { 5847 /* We have XYYY, search for Xno-YYY. */ 5848 for (i = switchnum + 1; i < n_switches; i++) 5849 if (switches[i].part1[0] == name[0] 5850 && switches[i].part1[1] == 'n' 5851 && switches[i].part1[2] == 'o' 5852 && switches[i].part1[3] == '-' 5853 && !strcmp (&switches[i].part1[4], &name[1])) 5854 { 5855 switches[switchnum].validated = 1; 5856 switches[switchnum].live_cond = SWITCH_FALSE; 5857 return 0; 5858 } 5859 } 5860 break; 5861 } 5862 5863 /* Otherwise the switch is live. */ 5864 switches[switchnum].live_cond |= SWITCH_LIVE; 5865 return 1; 5866 } 5867 5868 /* Pass a switch to the current accumulating command 5869 in the same form that we received it. 5870 SWITCHNUM identifies the switch; it is an index into 5871 the vector of switches gcc received, which is `switches'. 5872 This cannot fail since it never finishes a command line. 5873 5874 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */ 5875 5876 static void 5877 give_switch (int switchnum, int omit_first_word) 5878 { 5879 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0) 5880 return; 5881 5882 if (!omit_first_word) 5883 { 5884 do_spec_1 ("-", 0, NULL); 5885 do_spec_1 (switches[switchnum].part1, 1, NULL); 5886 } 5887 5888 if (switches[switchnum].args != 0) 5889 { 5890 const char **p; 5891 for (p = switches[switchnum].args; *p; p++) 5892 { 5893 const char *arg = *p; 5894 5895 do_spec_1 (" ", 0, NULL); 5896 if (suffix_subst) 5897 { 5898 unsigned length = strlen (arg); 5899 int dot = 0; 5900 5901 while (length-- && !IS_DIR_SEPARATOR (arg[length])) 5902 if (arg[length] == '.') 5903 { 5904 (CONST_CAST(char *, arg))[length] = 0; 5905 dot = 1; 5906 break; 5907 } 5908 do_spec_1 (arg, 1, NULL); 5909 if (dot) 5910 (CONST_CAST(char *, arg))[length] = '.'; 5911 do_spec_1 (suffix_subst, 1, NULL); 5912 } 5913 else 5914 do_spec_1 (arg, 1, NULL); 5915 } 5916 } 5917 5918 do_spec_1 (" ", 0, NULL); 5919 switches[switchnum].validated = 1; 5920 } 5921 5922 /* Search for a file named NAME trying various prefixes including the 5923 user's -B prefix and some standard ones. 5924 Return the absolute file name found. If nothing is found, return NAME. */ 5925 5926 static const char * 5927 find_file (const char *name) 5928 { 5929 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true); 5930 return newname ? newname : name; 5931 } 5932 5933 /* Determine whether a directory exists. If LINKER, return 0 for 5934 certain fixed names not needed by the linker. */ 5935 5936 static int 5937 is_directory (const char *path1, bool linker) 5938 { 5939 int len1; 5940 char *path; 5941 char *cp; 5942 struct stat st; 5943 5944 /* Ensure the string ends with "/.". The resulting path will be a 5945 directory even if the given path is a symbolic link. */ 5946 len1 = strlen (path1); 5947 path = (char *) alloca (3 + len1); 5948 memcpy (path, path1, len1); 5949 cp = path + len1; 5950 if (!IS_DIR_SEPARATOR (cp[-1])) 5951 *cp++ = DIR_SEPARATOR; 5952 *cp++ = '.'; 5953 *cp = '\0'; 5954 5955 /* Exclude directories that the linker is known to search. */ 5956 if (linker 5957 && IS_DIR_SEPARATOR (path[0]) 5958 && ((cp - path == 6 5959 && filename_ncmp (path + 1, "lib", 3) == 0) 5960 || (cp - path == 10 5961 && filename_ncmp (path + 1, "usr", 3) == 0 5962 && IS_DIR_SEPARATOR (path[4]) 5963 && filename_ncmp (path + 5, "lib", 3) == 0))) 5964 return 0; 5965 5966 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); 5967 } 5968 5969 /* Set up the various global variables to indicate that we're processing 5970 the input file named FILENAME. */ 5971 5972 void 5973 set_input (const char *filename) 5974 { 5975 const char *p; 5976 5977 gcc_input_filename = filename; 5978 input_filename_length = strlen (gcc_input_filename); 5979 input_basename = lbasename (gcc_input_filename); 5980 5981 /* Find a suffix starting with the last period, 5982 and set basename_length to exclude that suffix. */ 5983 basename_length = strlen (input_basename); 5984 suffixed_basename_length = basename_length; 5985 p = input_basename + basename_length; 5986 while (p != input_basename && *p != '.') 5987 --p; 5988 if (*p == '.' && p != input_basename) 5989 { 5990 basename_length = p - input_basename; 5991 input_suffix = p + 1; 5992 } 5993 else 5994 input_suffix = ""; 5995 5996 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then 5997 we will need to do a stat on the gcc_input_filename. The 5998 INPUT_STAT_SET signals that the stat is needed. */ 5999 input_stat_set = 0; 6000 } 6001 6002 /* On fatal signals, delete all the temporary files. */ 6003 6004 static void 6005 fatal_signal (int signum) 6006 { 6007 signal (signum, SIG_DFL); 6008 delete_failure_queue (); 6009 delete_temp_files (); 6010 /* Get the same signal again, this time not handled, 6011 so its normal effect occurs. */ 6012 kill (getpid (), signum); 6013 } 6014 6015 /* Compare the contents of the two files named CMPFILE[0] and 6016 CMPFILE[1]. Return zero if they're identical, nonzero 6017 otherwise. */ 6018 6019 static int 6020 compare_files (char *cmpfile[]) 6021 { 6022 int ret = 0; 6023 FILE *temp[2] = { NULL, NULL }; 6024 int i; 6025 6026 #if HAVE_MMAP_FILE 6027 { 6028 size_t length[2]; 6029 void *map[2] = { NULL, NULL }; 6030 6031 for (i = 0; i < 2; i++) 6032 { 6033 struct stat st; 6034 6035 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode)) 6036 { 6037 error ("%s: could not determine length of compare-debug file %s", 6038 gcc_input_filename, cmpfile[i]); 6039 ret = 1; 6040 break; 6041 } 6042 6043 length[i] = st.st_size; 6044 } 6045 6046 if (!ret && length[0] != length[1]) 6047 { 6048 error ("%s: -fcompare-debug failure (length)", gcc_input_filename); 6049 ret = 1; 6050 } 6051 6052 if (!ret) 6053 for (i = 0; i < 2; i++) 6054 { 6055 int fd = open (cmpfile[i], O_RDONLY); 6056 if (fd < 0) 6057 { 6058 error ("%s: could not open compare-debug file %s", 6059 gcc_input_filename, cmpfile[i]); 6060 ret = 1; 6061 break; 6062 } 6063 6064 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0); 6065 close (fd); 6066 6067 if (map[i] == (void *) MAP_FAILED) 6068 { 6069 ret = -1; 6070 break; 6071 } 6072 } 6073 6074 if (!ret) 6075 { 6076 if (memcmp (map[0], map[1], length[0]) != 0) 6077 { 6078 error ("%s: -fcompare-debug failure", gcc_input_filename); 6079 ret = 1; 6080 } 6081 } 6082 6083 for (i = 0; i < 2; i++) 6084 if (map[i]) 6085 munmap ((caddr_t) map[i], length[i]); 6086 6087 if (ret >= 0) 6088 return ret; 6089 6090 ret = 0; 6091 } 6092 #endif 6093 6094 for (i = 0; i < 2; i++) 6095 { 6096 temp[i] = fopen (cmpfile[i], "r"); 6097 if (!temp[i]) 6098 { 6099 error ("%s: could not open compare-debug file %s", 6100 gcc_input_filename, cmpfile[i]); 6101 ret = 1; 6102 break; 6103 } 6104 } 6105 6106 if (!ret && temp[0] && temp[1]) 6107 for (;;) 6108 { 6109 int c0, c1; 6110 c0 = fgetc (temp[0]); 6111 c1 = fgetc (temp[1]); 6112 6113 if (c0 != c1) 6114 { 6115 error ("%s: -fcompare-debug failure", 6116 gcc_input_filename); 6117 ret = 1; 6118 break; 6119 } 6120 6121 if (c0 == EOF) 6122 break; 6123 } 6124 6125 for (i = 1; i >= 0; i--) 6126 { 6127 if (temp[i]) 6128 fclose (temp[i]); 6129 } 6130 6131 return ret; 6132 } 6133 6134 extern int main (int, char **); 6135 6136 int 6137 main (int argc, char **argv) 6138 { 6139 size_t i; 6140 int value; 6141 int linker_was_run = 0; 6142 int lang_n_infiles = 0; 6143 int num_linker_inputs = 0; 6144 char *explicit_link_files; 6145 char *specs_file; 6146 char *lto_wrapper_file; 6147 const char *p; 6148 struct user_specs *uptr; 6149 char **old_argv = argv; 6150 struct cl_decoded_option *decoded_options; 6151 unsigned int decoded_options_count; 6152 6153 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes 6154 on ?: in file-scope variable initializations. */ 6155 asm_debug = ASM_DEBUG_SPEC; 6156 6157 p = argv[0] + strlen (argv[0]); 6158 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) 6159 --p; 6160 progname = p; 6161 6162 xmalloc_set_program_name (progname); 6163 6164 expandargv (&argc, &argv); 6165 6166 /* Determine if any expansions were made. */ 6167 if (argv != old_argv) 6168 at_file_supplied = true; 6169 6170 /* Register the language-independent parameters. */ 6171 global_init_params (); 6172 finish_params (); 6173 6174 init_options_struct (&global_options, &global_options_set); 6175 6176 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **, 6177 argv), 6178 CL_DRIVER, 6179 &decoded_options, &decoded_options_count); 6180 6181 #ifdef GCC_DRIVER_HOST_INITIALIZATION 6182 /* Perform host dependent initialization when needed. */ 6183 GCC_DRIVER_HOST_INITIALIZATION; 6184 #endif 6185 6186 /* Unlock the stdio streams. */ 6187 unlock_std_streams (); 6188 6189 gcc_init_libintl (); 6190 6191 diagnostic_initialize (global_dc, 0); 6192 if (atexit (delete_temp_files) != 0) 6193 fatal_error ("atexit failed"); 6194 6195 if (signal (SIGINT, SIG_IGN) != SIG_IGN) 6196 signal (SIGINT, fatal_signal); 6197 #ifdef SIGHUP 6198 if (signal (SIGHUP, SIG_IGN) != SIG_IGN) 6199 signal (SIGHUP, fatal_signal); 6200 #endif 6201 if (signal (SIGTERM, SIG_IGN) != SIG_IGN) 6202 signal (SIGTERM, fatal_signal); 6203 #ifdef SIGPIPE 6204 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) 6205 signal (SIGPIPE, fatal_signal); 6206 #endif 6207 #ifdef SIGCHLD 6208 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will 6209 receive the signal. A different setting is inheritable */ 6210 signal (SIGCHLD, SIG_DFL); 6211 #endif 6212 6213 /* Parsing and gimplification sometimes need quite large stack. 6214 Increase stack size limits if possible. */ 6215 stack_limit_increase (64 * 1024 * 1024); 6216 6217 /* Allocate the argument vector. */ 6218 alloc_args (); 6219 6220 obstack_init (&obstack); 6221 6222 /* Build multilib_select, et. al from the separate lines that make up each 6223 multilib selection. */ 6224 { 6225 const char *const *q = multilib_raw; 6226 int need_space; 6227 6228 obstack_init (&multilib_obstack); 6229 while ((p = *q++) != (char *) 0) 6230 obstack_grow (&multilib_obstack, p, strlen (p)); 6231 6232 obstack_1grow (&multilib_obstack, 0); 6233 multilib_select = XOBFINISH (&multilib_obstack, const char *); 6234 6235 q = multilib_matches_raw; 6236 while ((p = *q++) != (char *) 0) 6237 obstack_grow (&multilib_obstack, p, strlen (p)); 6238 6239 obstack_1grow (&multilib_obstack, 0); 6240 multilib_matches = XOBFINISH (&multilib_obstack, const char *); 6241 6242 q = multilib_exclusions_raw; 6243 while ((p = *q++) != (char *) 0) 6244 obstack_grow (&multilib_obstack, p, strlen (p)); 6245 6246 obstack_1grow (&multilib_obstack, 0); 6247 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *); 6248 6249 need_space = FALSE; 6250 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++) 6251 { 6252 if (need_space) 6253 obstack_1grow (&multilib_obstack, ' '); 6254 obstack_grow (&multilib_obstack, 6255 multilib_defaults_raw[i], 6256 strlen (multilib_defaults_raw[i])); 6257 need_space = TRUE; 6258 } 6259 6260 obstack_1grow (&multilib_obstack, 0); 6261 multilib_defaults = XOBFINISH (&multilib_obstack, const char *); 6262 } 6263 6264 #ifdef INIT_ENVIRONMENT 6265 /* Set up any other necessary machine specific environment variables. */ 6266 xputenv (INIT_ENVIRONMENT); 6267 #endif 6268 6269 /* Make a table of what switches there are (switches, n_switches). 6270 Make a table of specified input files (infiles, n_infiles). 6271 Decode switches that are handled locally. */ 6272 6273 process_command (decoded_options_count, decoded_options); 6274 6275 /* Initialize the vector of specs to just the default. 6276 This means one element containing 0s, as a terminator. */ 6277 6278 compilers = XNEWVAR (struct compiler, sizeof default_compilers); 6279 memcpy (compilers, default_compilers, sizeof default_compilers); 6280 n_compilers = n_default_compilers; 6281 6282 /* Read specs from a file if there is one. */ 6283 6284 machine_suffix = concat (spec_machine, dir_separator_str, 6285 spec_version, dir_separator_str, NULL); 6286 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL); 6287 6288 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true); 6289 /* Read the specs file unless it is a default one. */ 6290 if (specs_file != 0 && strcmp (specs_file, "specs")) 6291 read_specs (specs_file, TRUE); 6292 else 6293 init_spec (); 6294 6295 /* We need to check standard_exec_prefix/just_machine_suffix/specs 6296 for any override of as, ld and libraries. */ 6297 specs_file = (char *) alloca (strlen (standard_exec_prefix) 6298 + strlen (just_machine_suffix) + sizeof ("specs")); 6299 6300 strcpy (specs_file, standard_exec_prefix); 6301 strcat (specs_file, just_machine_suffix); 6302 strcat (specs_file, "specs"); 6303 if (access (specs_file, R_OK) == 0) 6304 read_specs (specs_file, TRUE); 6305 6306 /* Process any configure-time defaults specified for the command line 6307 options, via OPTION_DEFAULT_SPECS. */ 6308 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) 6309 do_option_spec (option_default_specs[i].name, 6310 option_default_specs[i].spec); 6311 6312 /* Process DRIVER_SELF_SPECS, adding any new options to the end 6313 of the command line. */ 6314 6315 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++) 6316 do_self_spec (driver_self_specs[i]); 6317 6318 /* If not cross-compiling, look for executables in the standard 6319 places. */ 6320 if (*cross_compile == '0') 6321 { 6322 if (*md_exec_prefix) 6323 { 6324 add_prefix (&exec_prefixes, md_exec_prefix, "GCC", 6325 PREFIX_PRIORITY_LAST, 0, 0); 6326 } 6327 } 6328 6329 /* Process sysroot_suffix_spec. */ 6330 if (*sysroot_suffix_spec != 0 6331 && do_spec_2 (sysroot_suffix_spec) == 0) 6332 { 6333 if (VEC_length (const_char_p, argbuf) > 1) 6334 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC"); 6335 else if (VEC_length (const_char_p, argbuf) == 1) 6336 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf)); 6337 } 6338 6339 #ifdef HAVE_LD_SYSROOT 6340 /* Pass the --sysroot option to the linker, if it supports that. If 6341 there is a sysroot_suffix_spec, it has already been processed by 6342 this point, so target_system_root really is the system root we 6343 should be using. */ 6344 if (target_system_root) 6345 { 6346 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) ")); 6347 obstack_grow0 (&obstack, link_spec, strlen (link_spec)); 6348 set_spec ("link", XOBFINISH (&obstack, const char *)); 6349 } 6350 #endif 6351 6352 /* Process sysroot_hdrs_suffix_spec. */ 6353 if (*sysroot_hdrs_suffix_spec != 0 6354 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0) 6355 { 6356 if (VEC_length (const_char_p, argbuf) > 1) 6357 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC"); 6358 else if (VEC_length (const_char_p, argbuf) == 1) 6359 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf)); 6360 } 6361 6362 /* Look for startfiles in the standard places. */ 6363 if (*startfile_prefix_spec != 0 6364 && do_spec_2 (startfile_prefix_spec) == 0 6365 && do_spec_1 (" ", 0, NULL) == 0) 6366 { 6367 const char *arg; 6368 int ndx; 6369 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg) 6370 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS", 6371 PREFIX_PRIORITY_LAST, 0, 1); 6372 } 6373 /* We should eventually get rid of all these and stick to 6374 startfile_prefix_spec exclusively. */ 6375 else if (*cross_compile == '0' || target_system_root) 6376 { 6377 if (*md_startfile_prefix) 6378 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix, 6379 "GCC", PREFIX_PRIORITY_LAST, 0, 1); 6380 6381 if (*md_startfile_prefix_1) 6382 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1, 6383 "GCC", PREFIX_PRIORITY_LAST, 0, 1); 6384 6385 /* If standard_startfile_prefix is relative, base it on 6386 standard_exec_prefix. This lets us move the installed tree 6387 as a unit. If GCC_EXEC_PREFIX is defined, base 6388 standard_startfile_prefix on that as well. 6389 6390 If the prefix is relative, only search it for native compilers; 6391 otherwise we will search a directory containing host libraries. */ 6392 if (IS_ABSOLUTE_PATH (standard_startfile_prefix)) 6393 add_sysrooted_prefix (&startfile_prefixes, 6394 standard_startfile_prefix, "BINUTILS", 6395 PREFIX_PRIORITY_LAST, 0, 1); 6396 else if (*cross_compile == '0') 6397 { 6398 add_prefix (&startfile_prefixes, 6399 concat (gcc_exec_prefix 6400 ? gcc_exec_prefix : standard_exec_prefix, 6401 machine_suffix, 6402 standard_startfile_prefix, NULL), 6403 NULL, PREFIX_PRIORITY_LAST, 0, 1); 6404 } 6405 6406 /* Sysrooted prefixes are relocated because target_system_root is 6407 also relocated by gcc_exec_prefix. */ 6408 if (*standard_startfile_prefix_1) 6409 add_sysrooted_prefix (&startfile_prefixes, 6410 standard_startfile_prefix_1, "BINUTILS", 6411 PREFIX_PRIORITY_LAST, 0, 1); 6412 if (*standard_startfile_prefix_2) 6413 add_sysrooted_prefix (&startfile_prefixes, 6414 standard_startfile_prefix_2, "BINUTILS", 6415 PREFIX_PRIORITY_LAST, 0, 1); 6416 } 6417 6418 /* Process any user specified specs in the order given on the command 6419 line. */ 6420 for (uptr = user_specs_head; uptr; uptr = uptr->next) 6421 { 6422 char *filename = find_a_file (&startfile_prefixes, uptr->filename, 6423 R_OK, true); 6424 read_specs (filename ? filename : uptr->filename, FALSE); 6425 } 6426 6427 /* Process any user self specs. */ 6428 { 6429 struct spec_list *sl; 6430 for (sl = specs; sl; sl = sl->next) 6431 if (sl->name_len == sizeof "self_spec" - 1 6432 && !strcmp (sl->name, "self_spec")) 6433 do_self_spec (*sl->ptr_spec); 6434 } 6435 6436 if (compare_debug) 6437 { 6438 enum save_temps save; 6439 6440 if (!compare_debug_second) 6441 { 6442 n_switches_debug_check[1] = n_switches; 6443 n_switches_alloc_debug_check[1] = n_switches_alloc; 6444 switches_debug_check[1] = XDUPVEC (struct switchstr, switches, 6445 n_switches_alloc); 6446 6447 do_self_spec ("%:compare-debug-self-opt()"); 6448 n_switches_debug_check[0] = n_switches; 6449 n_switches_alloc_debug_check[0] = n_switches_alloc; 6450 switches_debug_check[0] = switches; 6451 6452 n_switches = n_switches_debug_check[1]; 6453 n_switches_alloc = n_switches_alloc_debug_check[1]; 6454 switches = switches_debug_check[1]; 6455 } 6456 6457 /* Avoid crash when computing %j in this early. */ 6458 save = save_temps_flag; 6459 save_temps_flag = SAVE_TEMPS_NONE; 6460 6461 compare_debug = -compare_debug; 6462 do_self_spec ("%:compare-debug-self-opt()"); 6463 6464 save_temps_flag = save; 6465 6466 if (!compare_debug_second) 6467 { 6468 n_switches_debug_check[1] = n_switches; 6469 n_switches_alloc_debug_check[1] = n_switches_alloc; 6470 switches_debug_check[1] = switches; 6471 compare_debug = -compare_debug; 6472 n_switches = n_switches_debug_check[0]; 6473 n_switches_alloc = n_switches_debug_check[0]; 6474 switches = switches_debug_check[0]; 6475 } 6476 } 6477 6478 6479 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ 6480 if (gcc_exec_prefix) 6481 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str, 6482 spec_version, dir_separator_str, NULL); 6483 6484 /* Now we have the specs. 6485 Set the `valid' bits for switches that match anything in any spec. */ 6486 6487 validate_all_switches (); 6488 6489 /* Now that we have the switches and the specs, set 6490 the subdirectory based on the options. */ 6491 set_multilib_dir (); 6492 6493 /* Set up to remember the pathname of gcc and any options 6494 needed for collect. We use argv[0] instead of progname because 6495 we need the complete pathname. */ 6496 obstack_init (&collect_obstack); 6497 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1); 6498 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1); 6499 xputenv (XOBFINISH (&collect_obstack, char *)); 6500 6501 /* Set up to remember the pathname of the lto wrapper. */ 6502 6503 if (have_c) 6504 lto_wrapper_file = NULL; 6505 else 6506 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", 6507 X_OK, false); 6508 if (lto_wrapper_file) 6509 { 6510 lto_wrapper_file = convert_white_space (lto_wrapper_file); 6511 lto_wrapper_spec = lto_wrapper_file; 6512 obstack_init (&collect_obstack); 6513 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=", 6514 sizeof ("COLLECT_LTO_WRAPPER=") - 1); 6515 obstack_grow (&collect_obstack, lto_wrapper_spec, 6516 strlen (lto_wrapper_spec) + 1); 6517 xputenv (XOBFINISH (&collect_obstack, char *)); 6518 } 6519 6520 /* Warn about any switches that no pass was interested in. */ 6521 6522 for (i = 0; (int) i < n_switches; i++) 6523 if (! switches[i].validated) 6524 error ("unrecognized option %<-%s%>", switches[i].part1); 6525 6526 /* Obey some of the options. */ 6527 6528 if (print_search_dirs) 6529 { 6530 printf (_("install: %s%s\n"), 6531 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, 6532 gcc_exec_prefix ? "" : machine_suffix); 6533 printf (_("programs: %s\n"), 6534 build_search_list (&exec_prefixes, "", false, false)); 6535 printf (_("libraries: %s\n"), 6536 build_search_list (&startfile_prefixes, "", false, true)); 6537 return (0); 6538 } 6539 6540 if (print_file_name) 6541 { 6542 printf ("%s\n", find_file (print_file_name)); 6543 return (0); 6544 } 6545 6546 if (print_prog_name) 6547 { 6548 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0); 6549 printf ("%s\n", (newname ? newname : print_prog_name)); 6550 return (0); 6551 } 6552 6553 if (print_multi_lib) 6554 { 6555 print_multilib_info (); 6556 return (0); 6557 } 6558 6559 if (print_multi_directory) 6560 { 6561 if (multilib_dir == NULL) 6562 printf (".\n"); 6563 else 6564 printf ("%s\n", multilib_dir); 6565 return (0); 6566 } 6567 6568 if (print_multiarch) 6569 { 6570 if (multiarch_dir == NULL) 6571 printf ("\n"); 6572 else 6573 printf ("%s\n", multiarch_dir); 6574 return (0); 6575 } 6576 6577 if (print_sysroot) 6578 { 6579 if (target_system_root) 6580 { 6581 if (target_sysroot_suffix) 6582 printf ("%s%s\n", target_system_root, target_sysroot_suffix); 6583 else 6584 printf ("%s\n", target_system_root); 6585 } 6586 return (0); 6587 } 6588 6589 if (print_multi_os_directory) 6590 { 6591 if (multilib_os_dir == NULL) 6592 printf (".\n"); 6593 else 6594 printf ("%s\n", multilib_os_dir); 6595 return (0); 6596 } 6597 6598 if (print_sysroot_headers_suffix) 6599 { 6600 if (*sysroot_hdrs_suffix_spec) 6601 { 6602 printf("%s\n", (target_sysroot_hdrs_suffix 6603 ? target_sysroot_hdrs_suffix 6604 : "")); 6605 return (0); 6606 } 6607 else 6608 /* The error status indicates that only one set of fixed 6609 headers should be built. */ 6610 fatal_error ("not configured with sysroot headers suffix"); 6611 } 6612 6613 if (print_help_list) 6614 { 6615 display_help (); 6616 6617 if (! verbose_flag) 6618 { 6619 printf (_("\nFor bug reporting instructions, please see:\n")); 6620 printf ("%s.\n", bug_report_url); 6621 6622 return (0); 6623 } 6624 6625 /* We do not exit here. Instead we have created a fake input file 6626 called 'help-dummy' which needs to be compiled, and we pass this 6627 on the various sub-processes, along with the --help switch. 6628 Ensure their output appears after ours. */ 6629 fputc ('\n', stdout); 6630 fflush (stdout); 6631 } 6632 6633 if (print_version) 6634 { 6635 printf (_("%s %s%s\n"), progname, pkgversion_string, 6636 version_string); 6637 printf ("Copyright %s 2012 Free Software Foundation, Inc.\n", 6638 _("(C)")); 6639 fputs (_("This is free software; see the source for copying conditions. There is NO\n\ 6640 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"), 6641 stdout); 6642 if (! verbose_flag) 6643 return 0; 6644 6645 /* We do not exit here. We use the same mechanism of --help to print 6646 the version of the sub-processes. */ 6647 fputc ('\n', stdout); 6648 fflush (stdout); 6649 } 6650 6651 if (verbose_flag) 6652 { 6653 int n; 6654 const char *thrmod; 6655 6656 fnotice (stderr, "Target: %s\n", spec_machine); 6657 fnotice (stderr, "Configured with: %s\n", configuration_arguments); 6658 6659 #ifdef THREAD_MODEL_SPEC 6660 /* We could have defined THREAD_MODEL_SPEC to "%*" by default, 6661 but there's no point in doing all this processing just to get 6662 thread_model back. */ 6663 obstack_init (&obstack); 6664 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model); 6665 obstack_1grow (&obstack, '\0'); 6666 thrmod = XOBFINISH (&obstack, const char *); 6667 #else 6668 thrmod = thread_model; 6669 #endif 6670 6671 fnotice (stderr, "Thread model: %s\n", thrmod); 6672 6673 /* compiler_version is truncated at the first space when initialized 6674 from version string, so truncate version_string at the first space 6675 before comparing. */ 6676 for (n = 0; version_string[n]; n++) 6677 if (version_string[n] == ' ') 6678 break; 6679 6680 if (! strncmp (version_string, compiler_version, n) 6681 && compiler_version[n] == 0) 6682 fnotice (stderr, "gcc version %s %s\n", version_string, 6683 pkgversion_string); 6684 else 6685 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n", 6686 version_string, pkgversion_string, compiler_version); 6687 6688 if (n_infiles == 0) 6689 return (0); 6690 } 6691 6692 if (n_infiles == added_libraries) 6693 fatal_error ("no input files"); 6694 6695 if (seen_error ()) 6696 goto out; 6697 6698 /* Make a place to record the compiler output file names 6699 that correspond to the input files. */ 6700 6701 i = n_infiles; 6702 i += lang_specific_extra_outfiles; 6703 outfiles = XCNEWVEC (const char *, i); 6704 6705 /* Record which files were specified explicitly as link input. */ 6706 6707 explicit_link_files = XCNEWVEC (char, n_infiles); 6708 6709 combine_inputs = have_o || flag_wpa; 6710 6711 for (i = 0; (int) i < n_infiles; i++) 6712 { 6713 const char *name = infiles[i].name; 6714 struct compiler *compiler = lookup_compiler (name, 6715 strlen (name), 6716 infiles[i].language); 6717 6718 if (compiler && !(compiler->combinable)) 6719 combine_inputs = false; 6720 6721 if (lang_n_infiles > 0 && compiler != input_file_compiler 6722 && infiles[i].language && infiles[i].language[0] != '*') 6723 infiles[i].incompiler = compiler; 6724 else if (compiler) 6725 { 6726 lang_n_infiles++; 6727 input_file_compiler = compiler; 6728 infiles[i].incompiler = compiler; 6729 } 6730 else 6731 { 6732 /* Since there is no compiler for this input file, assume it is a 6733 linker file. */ 6734 explicit_link_files[i] = 1; 6735 infiles[i].incompiler = NULL; 6736 } 6737 infiles[i].compiled = false; 6738 infiles[i].preprocessed = false; 6739 } 6740 6741 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1) 6742 fatal_error ("cannot specify -o with -c, -S or -E with multiple files"); 6743 6744 for (i = 0; (int) i < n_infiles; i++) 6745 { 6746 int this_file_error = 0; 6747 6748 /* Tell do_spec what to substitute for %i. */ 6749 6750 input_file_number = i; 6751 set_input (infiles[i].name); 6752 6753 if (infiles[i].compiled) 6754 continue; 6755 6756 /* Use the same thing in %o, unless cp->spec says otherwise. */ 6757 6758 outfiles[i] = gcc_input_filename; 6759 6760 /* Figure out which compiler from the file's suffix. */ 6761 6762 input_file_compiler 6763 = lookup_compiler (infiles[i].name, input_filename_length, 6764 infiles[i].language); 6765 6766 if (input_file_compiler) 6767 { 6768 /* Ok, we found an applicable compiler. Run its spec. */ 6769 6770 if (input_file_compiler->spec[0] == '#') 6771 { 6772 error ("%s: %s compiler not installed on this system", 6773 gcc_input_filename, &input_file_compiler->spec[1]); 6774 this_file_error = 1; 6775 } 6776 else 6777 { 6778 if (compare_debug) 6779 { 6780 free (debug_check_temp_file[0]); 6781 debug_check_temp_file[0] = NULL; 6782 6783 free (debug_check_temp_file[1]); 6784 debug_check_temp_file[1] = NULL; 6785 } 6786 6787 value = do_spec (input_file_compiler->spec); 6788 infiles[i].compiled = true; 6789 if (value < 0) 6790 this_file_error = 1; 6791 else if (compare_debug && debug_check_temp_file[0]) 6792 { 6793 if (verbose_flag) 6794 inform (0, "recompiling with -fcompare-debug"); 6795 6796 compare_debug = -compare_debug; 6797 n_switches = n_switches_debug_check[1]; 6798 n_switches_alloc = n_switches_alloc_debug_check[1]; 6799 switches = switches_debug_check[1]; 6800 6801 value = do_spec (input_file_compiler->spec); 6802 6803 compare_debug = -compare_debug; 6804 n_switches = n_switches_debug_check[0]; 6805 n_switches_alloc = n_switches_alloc_debug_check[0]; 6806 switches = switches_debug_check[0]; 6807 6808 if (value < 0) 6809 { 6810 error ("during -fcompare-debug recompilation"); 6811 this_file_error = 1; 6812 } 6813 6814 gcc_assert (debug_check_temp_file[1] 6815 && filename_cmp (debug_check_temp_file[0], 6816 debug_check_temp_file[1])); 6817 6818 if (verbose_flag) 6819 inform (0, "comparing final insns dumps"); 6820 6821 if (compare_files (debug_check_temp_file)) 6822 this_file_error = 1; 6823 } 6824 6825 if (compare_debug) 6826 { 6827 free (debug_check_temp_file[0]); 6828 debug_check_temp_file[0] = NULL; 6829 6830 free (debug_check_temp_file[1]); 6831 debug_check_temp_file[1] = NULL; 6832 } 6833 } 6834 } 6835 6836 /* If this file's name does not contain a recognized suffix, 6837 record it as explicit linker input. */ 6838 6839 else 6840 explicit_link_files[i] = 1; 6841 6842 /* Clear the delete-on-failure queue, deleting the files in it 6843 if this compilation failed. */ 6844 6845 if (this_file_error) 6846 { 6847 delete_failure_queue (); 6848 errorcount++; 6849 } 6850 /* If this compilation succeeded, don't delete those files later. */ 6851 clear_failure_queue (); 6852 } 6853 6854 /* Reset the input file name to the first compile/object file name, for use 6855 with %b in LINK_SPEC. We use the first input file that we can find 6856 a compiler to compile it instead of using infiles.language since for 6857 languages other than C we use aliases that we then lookup later. */ 6858 if (n_infiles > 0) 6859 { 6860 int i; 6861 6862 for (i = 0; i < n_infiles ; i++) 6863 if (infiles[i].incompiler 6864 || (infiles[i].language && infiles[i].language[0] != '*')) 6865 { 6866 set_input (infiles[i].name); 6867 break; 6868 } 6869 } 6870 6871 if (!seen_error ()) 6872 { 6873 /* Make sure INPUT_FILE_NUMBER points to first available open 6874 slot. */ 6875 input_file_number = n_infiles; 6876 if (lang_specific_pre_link ()) 6877 errorcount++; 6878 } 6879 6880 /* Determine if there are any linker input files. */ 6881 num_linker_inputs = 0; 6882 for (i = 0; (int) i < n_infiles; i++) 6883 if (explicit_link_files[i] || outfiles[i] != NULL) 6884 num_linker_inputs++; 6885 6886 /* Run ld to link all the compiler output files. */ 6887 6888 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2) 6889 { 6890 int tmp = execution_count; 6891 6892 if (! have_c) 6893 { 6894 #if HAVE_LTO_PLUGIN > 0 6895 #if HAVE_LTO_PLUGIN == 2 6896 const char *fno_use_linker_plugin = "fno-use-linker-plugin"; 6897 #else 6898 const char *fuse_linker_plugin = "fuse-linker-plugin"; 6899 #endif 6900 #endif 6901 6902 /* We'll use ld if we can't find collect2. */ 6903 if (! strcmp (linker_name_spec, "collect2")) 6904 { 6905 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false); 6906 if (s == NULL) 6907 linker_name_spec = "ld"; 6908 } 6909 6910 #if HAVE_LTO_PLUGIN > 0 6911 #if HAVE_LTO_PLUGIN == 2 6912 if (!switch_matches (fno_use_linker_plugin, 6913 fno_use_linker_plugin 6914 + strlen (fno_use_linker_plugin), 0)) 6915 #else 6916 if (switch_matches (fuse_linker_plugin, 6917 fuse_linker_plugin 6918 + strlen (fuse_linker_plugin), 0)) 6919 #endif 6920 { 6921 char *temp_spec = find_a_file (&exec_prefixes, 6922 LTOPLUGINSONAME, R_OK, 6923 false); 6924 if (!temp_spec) 6925 fatal_error ("-fuse-linker-plugin, but %s not found", 6926 LTOPLUGINSONAME); 6927 linker_plugin_file_spec = convert_white_space (temp_spec); 6928 } 6929 #endif 6930 lto_gcc_spec = argv[0]; 6931 } 6932 6933 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables 6934 for collect. */ 6935 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false); 6936 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true); 6937 6938 if (print_subprocess_help == 1) 6939 { 6940 printf (_("\nLinker options\n==============\n\n")); 6941 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\"" 6942 " to the linker.\n\n")); 6943 fflush (stdout); 6944 } 6945 value = do_spec (link_command_spec); 6946 if (value < 0) 6947 errorcount = 1; 6948 linker_was_run = (tmp != execution_count); 6949 } 6950 6951 /* If options said don't run linker, 6952 complain about input files to be given to the linker. */ 6953 6954 if (! linker_was_run && !seen_error ()) 6955 for (i = 0; (int) i < n_infiles; i++) 6956 if (explicit_link_files[i] 6957 && !(infiles[i].language && infiles[i].language[0] == '*')) 6958 warning (0, "%s: linker input file unused because linking not done", 6959 outfiles[i]); 6960 6961 /* Delete some or all of the temporary files we made. */ 6962 6963 if (seen_error ()) 6964 delete_failure_queue (); 6965 delete_temp_files (); 6966 6967 if (print_help_list) 6968 { 6969 printf (("\nFor bug reporting instructions, please see:\n")); 6970 printf ("%s\n", bug_report_url); 6971 } 6972 6973 out: 6974 return (signal_count != 0 ? 2 6975 : seen_error () ? (pass_exit_codes ? greatest_status : 1) 6976 : 0); 6977 } 6978 6979 /* Find the proper compilation spec for the file name NAME, 6980 whose length is LENGTH. LANGUAGE is the specified language, 6981 or 0 if this file is to be passed to the linker. */ 6982 6983 static struct compiler * 6984 lookup_compiler (const char *name, size_t length, const char *language) 6985 { 6986 struct compiler *cp; 6987 6988 /* If this was specified by the user to be a linker input, indicate that. */ 6989 if (language != 0 && language[0] == '*') 6990 return 0; 6991 6992 /* Otherwise, look for the language, if one is spec'd. */ 6993 if (language != 0) 6994 { 6995 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6996 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language)) 6997 return cp; 6998 6999 error ("language %s not recognized", language); 7000 return 0; 7001 } 7002 7003 /* Look for a suffix. */ 7004 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 7005 { 7006 if (/* The suffix `-' matches only the file name `-'. */ 7007 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 7008 || (strlen (cp->suffix) < length 7009 /* See if the suffix matches the end of NAME. */ 7010 && !strcmp (cp->suffix, 7011 name + length - strlen (cp->suffix)) 7012 )) 7013 break; 7014 } 7015 7016 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM) 7017 /* Look again, but case-insensitively this time. */ 7018 if (cp < compilers) 7019 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 7020 { 7021 if (/* The suffix `-' matches only the file name `-'. */ 7022 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 7023 || (strlen (cp->suffix) < length 7024 /* See if the suffix matches the end of NAME. */ 7025 && ((!strcmp (cp->suffix, 7026 name + length - strlen (cp->suffix)) 7027 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")) 7028 && !strcasecmp (cp->suffix, 7029 name + length - strlen (cp->suffix))) 7030 )) 7031 break; 7032 } 7033 #endif 7034 7035 if (cp >= compilers) 7036 { 7037 if (cp->spec[0] != '@') 7038 /* A non-alias entry: return it. */ 7039 return cp; 7040 7041 /* An alias entry maps a suffix to a language. 7042 Search for the language; pass 0 for NAME and LENGTH 7043 to avoid infinite recursion if language not found. */ 7044 return lookup_compiler (NULL, 0, cp->spec + 1); 7045 } 7046 return 0; 7047 } 7048 7049 static char * 7050 save_string (const char *s, int len) 7051 { 7052 char *result = XNEWVEC (char, len + 1); 7053 7054 memcpy (result, s, len); 7055 result[len] = 0; 7056 return result; 7057 } 7058 7059 void 7060 pfatal_with_name (const char *name) 7061 { 7062 perror_with_name (name); 7063 delete_temp_files (); 7064 exit (1); 7065 } 7066 7067 static void 7068 perror_with_name (const char *name) 7069 { 7070 error ("%s: %m", name); 7071 } 7072 7073 static inline void 7074 validate_switches_from_spec (const char *spec) 7075 { 7076 const char *p = spec; 7077 char c; 7078 while ((c = *p++)) 7079 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{'))) 7080 /* We have a switch spec. */ 7081 p = validate_switches (p + 1); 7082 } 7083 7084 static void 7085 validate_all_switches (void) 7086 { 7087 struct compiler *comp; 7088 struct spec_list *spec; 7089 7090 for (comp = compilers; comp->spec; comp++) 7091 validate_switches_from_spec (comp->spec); 7092 7093 /* Look through the linked list of specs read from the specs file. */ 7094 for (spec = specs; spec; spec = spec->next) 7095 validate_switches_from_spec (*spec->ptr_spec); 7096 7097 validate_switches_from_spec (link_command_spec); 7098 } 7099 7100 /* Look at the switch-name that comes after START 7101 and mark as valid all supplied switches that match it. */ 7102 7103 static const char * 7104 validate_switches (const char *start) 7105 { 7106 const char *p = start; 7107 const char *atom; 7108 size_t len; 7109 int i; 7110 bool suffix = false; 7111 bool starred = false; 7112 7113 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) 7114 7115 next_member: 7116 SKIP_WHITE (); 7117 7118 if (*p == '!') 7119 p++; 7120 7121 SKIP_WHITE (); 7122 if (*p == '.' || *p == ',') 7123 suffix = true, p++; 7124 7125 atom = p; 7126 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' 7127 || *p == ',' || *p == '.' || *p == '@') 7128 p++; 7129 len = p - atom; 7130 7131 if (*p == '*') 7132 starred = true, p++; 7133 7134 SKIP_WHITE (); 7135 7136 if (!suffix) 7137 { 7138 /* Mark all matching switches as valid. */ 7139 for (i = 0; i < n_switches; i++) 7140 if (!strncmp (switches[i].part1, atom, len) 7141 && (starred || switches[i].part1[len] == 0)) 7142 switches[i].validated = 1; 7143 } 7144 7145 if (*p) p++; 7146 if (*p && (p[-1] == '|' || p[-1] == '&')) 7147 goto next_member; 7148 7149 if (*p && p[-1] == ':') 7150 { 7151 while (*p && *p != ';' && *p != '}') 7152 { 7153 if (*p == '%') 7154 { 7155 p++; 7156 if (*p == '{' || *p == '<') 7157 p = validate_switches (p+1); 7158 else if (p[0] == 'W' && p[1] == '{') 7159 p = validate_switches (p+2); 7160 } 7161 else 7162 p++; 7163 } 7164 7165 if (*p) p++; 7166 if (*p && p[-1] == ';') 7167 goto next_member; 7168 } 7169 7170 return p; 7171 #undef SKIP_WHITE 7172 } 7173 7174 struct mdswitchstr 7175 { 7176 const char *str; 7177 int len; 7178 }; 7179 7180 static struct mdswitchstr *mdswitches; 7181 static int n_mdswitches; 7182 7183 /* Check whether a particular argument was used. The first time we 7184 canonicalize the switches to keep only the ones we care about. */ 7185 7186 static int 7187 used_arg (const char *p, int len) 7188 { 7189 struct mswitchstr 7190 { 7191 const char *str; 7192 const char *replace; 7193 int len; 7194 int rep_len; 7195 }; 7196 7197 static struct mswitchstr *mswitches; 7198 static int n_mswitches; 7199 int i, j; 7200 7201 if (!mswitches) 7202 { 7203 struct mswitchstr *matches; 7204 const char *q; 7205 int cnt = 0; 7206 7207 /* Break multilib_matches into the component strings of string 7208 and replacement string. */ 7209 for (q = multilib_matches; *q != '\0'; q++) 7210 if (*q == ';') 7211 cnt++; 7212 7213 matches 7214 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt); 7215 i = 0; 7216 q = multilib_matches; 7217 while (*q != '\0') 7218 { 7219 matches[i].str = q; 7220 while (*q != ' ') 7221 { 7222 if (*q == '\0') 7223 { 7224 invalid_matches: 7225 fatal_error ("multilib spec %qs is invalid", 7226 multilib_matches); 7227 } 7228 q++; 7229 } 7230 matches[i].len = q - matches[i].str; 7231 7232 matches[i].replace = ++q; 7233 while (*q != ';' && *q != '\0') 7234 { 7235 if (*q == ' ') 7236 goto invalid_matches; 7237 q++; 7238 } 7239 matches[i].rep_len = q - matches[i].replace; 7240 i++; 7241 if (*q == ';') 7242 q++; 7243 } 7244 7245 /* Now build a list of the replacement string for switches that we care 7246 about. Make sure we allocate at least one entry. This prevents 7247 xmalloc from calling fatal, and prevents us from re-executing this 7248 block of code. */ 7249 mswitches 7250 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1)); 7251 for (i = 0; i < n_switches; i++) 7252 if ((switches[i].live_cond & SWITCH_IGNORE) == 0) 7253 { 7254 int xlen = strlen (switches[i].part1); 7255 for (j = 0; j < cnt; j++) 7256 if (xlen == matches[j].len 7257 && ! strncmp (switches[i].part1, matches[j].str, xlen)) 7258 { 7259 mswitches[n_mswitches].str = matches[j].replace; 7260 mswitches[n_mswitches].len = matches[j].rep_len; 7261 mswitches[n_mswitches].replace = (char *) 0; 7262 mswitches[n_mswitches].rep_len = 0; 7263 n_mswitches++; 7264 break; 7265 } 7266 } 7267 7268 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present 7269 on the command line nor any options mutually incompatible with 7270 them. */ 7271 for (i = 0; i < n_mdswitches; i++) 7272 { 7273 const char *r; 7274 7275 for (q = multilib_options; *q != '\0'; q++) 7276 { 7277 while (*q == ' ') 7278 q++; 7279 7280 r = q; 7281 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0 7282 || strchr (" /", q[mdswitches[i].len]) == NULL) 7283 { 7284 while (*q != ' ' && *q != '/' && *q != '\0') 7285 q++; 7286 if (*q != '/') 7287 break; 7288 q++; 7289 } 7290 7291 if (*q != ' ' && *q != '\0') 7292 { 7293 while (*r != ' ' && *r != '\0') 7294 { 7295 q = r; 7296 while (*q != ' ' && *q != '/' && *q != '\0') 7297 q++; 7298 7299 if (used_arg (r, q - r)) 7300 break; 7301 7302 if (*q != '/') 7303 { 7304 mswitches[n_mswitches].str = mdswitches[i].str; 7305 mswitches[n_mswitches].len = mdswitches[i].len; 7306 mswitches[n_mswitches].replace = (char *) 0; 7307 mswitches[n_mswitches].rep_len = 0; 7308 n_mswitches++; 7309 break; 7310 } 7311 7312 r = q + 1; 7313 } 7314 break; 7315 } 7316 } 7317 } 7318 } 7319 7320 for (i = 0; i < n_mswitches; i++) 7321 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len)) 7322 return 1; 7323 7324 return 0; 7325 } 7326 7327 static int 7328 default_arg (const char *p, int len) 7329 { 7330 int i; 7331 7332 for (i = 0; i < n_mdswitches; i++) 7333 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len)) 7334 return 1; 7335 7336 return 0; 7337 } 7338 7339 /* Work out the subdirectory to use based on the options. The format of 7340 multilib_select is a list of elements. Each element is a subdirectory 7341 name followed by a list of options followed by a semicolon. The format 7342 of multilib_exclusions is the same, but without the preceding 7343 directory. First gcc will check the exclusions, if none of the options 7344 beginning with an exclamation point are present, and all of the other 7345 options are present, then we will ignore this completely. Passing 7346 that, gcc will consider each multilib_select in turn using the same 7347 rules for matching the options. If a match is found, that subdirectory 7348 will be used. 7349 A subdirectory name is optionally followed by a colon and the corresponding 7350 multiarch name. */ 7351 7352 static void 7353 set_multilib_dir (void) 7354 { 7355 const char *p; 7356 unsigned int this_path_len; 7357 const char *this_path, *this_arg; 7358 const char *start, *end; 7359 int not_arg; 7360 int ok, ndfltok, first; 7361 7362 n_mdswitches = 0; 7363 start = multilib_defaults; 7364 while (*start == ' ' || *start == '\t') 7365 start++; 7366 while (*start != '\0') 7367 { 7368 n_mdswitches++; 7369 while (*start != ' ' && *start != '\t' && *start != '\0') 7370 start++; 7371 while (*start == ' ' || *start == '\t') 7372 start++; 7373 } 7374 7375 if (n_mdswitches) 7376 { 7377 int i = 0; 7378 7379 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches); 7380 for (start = multilib_defaults; *start != '\0'; start = end + 1) 7381 { 7382 while (*start == ' ' || *start == '\t') 7383 start++; 7384 7385 if (*start == '\0') 7386 break; 7387 7388 for (end = start + 1; 7389 *end != ' ' && *end != '\t' && *end != '\0'; end++) 7390 ; 7391 7392 obstack_grow (&multilib_obstack, start, end - start); 7393 obstack_1grow (&multilib_obstack, 0); 7394 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *); 7395 mdswitches[i++].len = end - start; 7396 7397 if (*end == '\0') 7398 break; 7399 } 7400 } 7401 7402 p = multilib_exclusions; 7403 while (*p != '\0') 7404 { 7405 /* Ignore newlines. */ 7406 if (*p == '\n') 7407 { 7408 ++p; 7409 continue; 7410 } 7411 7412 /* Check the arguments. */ 7413 ok = 1; 7414 while (*p != ';') 7415 { 7416 if (*p == '\0') 7417 { 7418 invalid_exclusions: 7419 fatal_error ("multilib exclusions %qs is invalid", 7420 multilib_exclusions); 7421 } 7422 7423 if (! ok) 7424 { 7425 ++p; 7426 continue; 7427 } 7428 7429 this_arg = p; 7430 while (*p != ' ' && *p != ';') 7431 { 7432 if (*p == '\0') 7433 goto invalid_exclusions; 7434 ++p; 7435 } 7436 7437 if (*this_arg != '!') 7438 not_arg = 0; 7439 else 7440 { 7441 not_arg = 1; 7442 ++this_arg; 7443 } 7444 7445 ok = used_arg (this_arg, p - this_arg); 7446 if (not_arg) 7447 ok = ! ok; 7448 7449 if (*p == ' ') 7450 ++p; 7451 } 7452 7453 if (ok) 7454 return; 7455 7456 ++p; 7457 } 7458 7459 first = 1; 7460 p = multilib_select; 7461 while (*p != '\0') 7462 { 7463 /* Ignore newlines. */ 7464 if (*p == '\n') 7465 { 7466 ++p; 7467 continue; 7468 } 7469 7470 /* Get the initial path. */ 7471 this_path = p; 7472 while (*p != ' ') 7473 { 7474 if (*p == '\0') 7475 { 7476 invalid_select: 7477 fatal_error ("multilib select %qs is invalid", 7478 multilib_select); 7479 } 7480 ++p; 7481 } 7482 this_path_len = p - this_path; 7483 7484 /* Check the arguments. */ 7485 ok = 1; 7486 ndfltok = 1; 7487 ++p; 7488 while (*p != ';') 7489 { 7490 if (*p == '\0') 7491 goto invalid_select; 7492 7493 if (! ok) 7494 { 7495 ++p; 7496 continue; 7497 } 7498 7499 this_arg = p; 7500 while (*p != ' ' && *p != ';') 7501 { 7502 if (*p == '\0') 7503 goto invalid_select; 7504 ++p; 7505 } 7506 7507 if (*this_arg != '!') 7508 not_arg = 0; 7509 else 7510 { 7511 not_arg = 1; 7512 ++this_arg; 7513 } 7514 7515 /* If this is a default argument, we can just ignore it. 7516 This is true even if this_arg begins with '!'. Beginning 7517 with '!' does not mean that this argument is necessarily 7518 inappropriate for this library: it merely means that 7519 there is a more specific library which uses this 7520 argument. If this argument is a default, we need not 7521 consider that more specific library. */ 7522 ok = used_arg (this_arg, p - this_arg); 7523 if (not_arg) 7524 ok = ! ok; 7525 7526 if (! ok) 7527 ndfltok = 0; 7528 7529 if (default_arg (this_arg, p - this_arg)) 7530 ok = 1; 7531 7532 if (*p == ' ') 7533 ++p; 7534 } 7535 7536 if (ok && first) 7537 { 7538 if (this_path_len != 1 7539 || this_path[0] != '.') 7540 { 7541 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1); 7542 char *q; 7543 7544 strncpy (new_multilib_dir, this_path, this_path_len); 7545 new_multilib_dir[this_path_len] = '\0'; 7546 q = strchr (new_multilib_dir, ':'); 7547 if (q != NULL) 7548 *q = '\0'; 7549 multilib_dir = new_multilib_dir; 7550 } 7551 first = 0; 7552 } 7553 7554 if (ndfltok) 7555 { 7556 const char *q = this_path, *end = this_path + this_path_len; 7557 7558 while (q < end && *q != ':') 7559 q++; 7560 if (q < end) 7561 { 7562 const char *q2 = q + 1, *ml_end = end; 7563 char *new_multilib_os_dir; 7564 7565 while (q2 < end && *q2 != ':') 7566 q2++; 7567 if (*q2 == ':') 7568 ml_end = q2; 7569 new_multilib_os_dir = XNEWVEC (char, ml_end - q); 7570 memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1); 7571 new_multilib_os_dir[ml_end - q - 1] = '\0'; 7572 multilib_os_dir = *new_multilib_os_dir ? new_multilib_os_dir : "."; 7573 7574 if (q2 < end && *q2 == ':') 7575 { 7576 char *new_multiarch_dir = XNEWVEC (char, end - q2); 7577 memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1); 7578 new_multiarch_dir[end - q2 - 1] = '\0'; 7579 multiarch_dir = new_multiarch_dir; 7580 } 7581 break; 7582 } 7583 } 7584 7585 ++p; 7586 } 7587 7588 if (multilib_dir == NULL && multilib_os_dir != NULL 7589 && strcmp (multilib_os_dir, ".") == 0) 7590 { 7591 free (CONST_CAST (char *, multilib_os_dir)); 7592 multilib_os_dir = NULL; 7593 } 7594 else if (multilib_dir != NULL && multilib_os_dir == NULL) 7595 multilib_os_dir = multilib_dir; 7596 } 7597 7598 /* Print out the multiple library subdirectory selection 7599 information. This prints out a series of lines. Each line looks 7600 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is 7601 required. Only the desired options are printed out, the negative 7602 matches. The options are print without a leading dash. There are 7603 no spaces to make it easy to use the information in the shell. 7604 Each subdirectory is printed only once. This assumes the ordering 7605 generated by the genmultilib script. Also, we leave out ones that match 7606 the exclusions. */ 7607 7608 static void 7609 print_multilib_info (void) 7610 { 7611 const char *p = multilib_select; 7612 const char *last_path = 0, *this_path; 7613 int skip; 7614 unsigned int last_path_len = 0; 7615 7616 while (*p != '\0') 7617 { 7618 skip = 0; 7619 /* Ignore newlines. */ 7620 if (*p == '\n') 7621 { 7622 ++p; 7623 continue; 7624 } 7625 7626 /* Get the initial path. */ 7627 this_path = p; 7628 while (*p != ' ') 7629 { 7630 if (*p == '\0') 7631 { 7632 invalid_select: 7633 fatal_error ("multilib select %qs is invalid", multilib_select); 7634 } 7635 7636 ++p; 7637 } 7638 7639 /* When --disable-multilib was used but target defines 7640 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting 7641 with .:: for multiarch configurations) are there just to find 7642 multilib_os_dir, so skip them from output. */ 7643 if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':') 7644 skip = 1; 7645 7646 /* Check for matches with the multilib_exclusions. We don't bother 7647 with the '!' in either list. If any of the exclusion rules match 7648 all of its options with the select rule, we skip it. */ 7649 { 7650 const char *e = multilib_exclusions; 7651 const char *this_arg; 7652 7653 while (*e != '\0') 7654 { 7655 int m = 1; 7656 /* Ignore newlines. */ 7657 if (*e == '\n') 7658 { 7659 ++e; 7660 continue; 7661 } 7662 7663 /* Check the arguments. */ 7664 while (*e != ';') 7665 { 7666 const char *q; 7667 int mp = 0; 7668 7669 if (*e == '\0') 7670 { 7671 invalid_exclusion: 7672 fatal_error ("multilib exclusion %qs is invalid", 7673 multilib_exclusions); 7674 } 7675 7676 if (! m) 7677 { 7678 ++e; 7679 continue; 7680 } 7681 7682 this_arg = e; 7683 7684 while (*e != ' ' && *e != ';') 7685 { 7686 if (*e == '\0') 7687 goto invalid_exclusion; 7688 ++e; 7689 } 7690 7691 q = p + 1; 7692 while (*q != ';') 7693 { 7694 const char *arg; 7695 int len = e - this_arg; 7696 7697 if (*q == '\0') 7698 goto invalid_select; 7699 7700 arg = q; 7701 7702 while (*q != ' ' && *q != ';') 7703 { 7704 if (*q == '\0') 7705 goto invalid_select; 7706 ++q; 7707 } 7708 7709 if (! strncmp (arg, this_arg, 7710 (len < q - arg) ? q - arg : len) 7711 || default_arg (this_arg, e - this_arg)) 7712 { 7713 mp = 1; 7714 break; 7715 } 7716 7717 if (*q == ' ') 7718 ++q; 7719 } 7720 7721 if (! mp) 7722 m = 0; 7723 7724 if (*e == ' ') 7725 ++e; 7726 } 7727 7728 if (m) 7729 { 7730 skip = 1; 7731 break; 7732 } 7733 7734 if (*e != '\0') 7735 ++e; 7736 } 7737 } 7738 7739 if (! skip) 7740 { 7741 /* If this is a duplicate, skip it. */ 7742 skip = (last_path != 0 7743 && (unsigned int) (p - this_path) == last_path_len 7744 && ! filename_ncmp (last_path, this_path, last_path_len)); 7745 7746 last_path = this_path; 7747 last_path_len = p - this_path; 7748 } 7749 7750 /* If this directory requires any default arguments, we can skip 7751 it. We will already have printed a directory identical to 7752 this one which does not require that default argument. */ 7753 if (! skip) 7754 { 7755 const char *q; 7756 7757 q = p + 1; 7758 while (*q != ';') 7759 { 7760 const char *arg; 7761 7762 if (*q == '\0') 7763 goto invalid_select; 7764 7765 if (*q == '!') 7766 arg = NULL; 7767 else 7768 arg = q; 7769 7770 while (*q != ' ' && *q != ';') 7771 { 7772 if (*q == '\0') 7773 goto invalid_select; 7774 ++q; 7775 } 7776 7777 if (arg != NULL 7778 && default_arg (arg, q - arg)) 7779 { 7780 skip = 1; 7781 break; 7782 } 7783 7784 if (*q == ' ') 7785 ++q; 7786 } 7787 } 7788 7789 if (! skip) 7790 { 7791 const char *p1; 7792 7793 for (p1 = last_path; p1 < p && *p1 != ':'; p1++) 7794 putchar (*p1); 7795 putchar (';'); 7796 } 7797 7798 ++p; 7799 while (*p != ';') 7800 { 7801 int use_arg; 7802 7803 if (*p == '\0') 7804 goto invalid_select; 7805 7806 if (skip) 7807 { 7808 ++p; 7809 continue; 7810 } 7811 7812 use_arg = *p != '!'; 7813 7814 if (use_arg) 7815 putchar ('@'); 7816 7817 while (*p != ' ' && *p != ';') 7818 { 7819 if (*p == '\0') 7820 goto invalid_select; 7821 if (use_arg) 7822 putchar (*p); 7823 ++p; 7824 } 7825 7826 if (*p == ' ') 7827 ++p; 7828 } 7829 7830 if (! skip) 7831 { 7832 /* If there are extra options, print them now. */ 7833 if (multilib_extra && *multilib_extra) 7834 { 7835 int print_at = TRUE; 7836 const char *q; 7837 7838 for (q = multilib_extra; *q != '\0'; q++) 7839 { 7840 if (*q == ' ') 7841 print_at = TRUE; 7842 else 7843 { 7844 if (print_at) 7845 putchar ('@'); 7846 putchar (*q); 7847 print_at = FALSE; 7848 } 7849 } 7850 } 7851 7852 putchar ('\n'); 7853 } 7854 7855 ++p; 7856 } 7857 } 7858 7859 /* getenv built-in spec function. 7860 7861 Returns the value of the environment variable given by its first 7862 argument, concatenated with the second argument. If the 7863 environment variable is not defined, a fatal error is issued. */ 7864 7865 static const char * 7866 getenv_spec_function (int argc, const char **argv) 7867 { 7868 char *value; 7869 char *result; 7870 char *ptr; 7871 size_t len; 7872 7873 if (argc != 2) 7874 return NULL; 7875 7876 value = getenv (argv[0]); 7877 if (!value) 7878 fatal_error ("environment variable %qs not defined", argv[0]); 7879 7880 /* We have to escape every character of the environment variable so 7881 they are not interpreted as active spec characters. A 7882 particularly painful case is when we are reading a variable 7883 holding a windows path complete with \ separators. */ 7884 len = strlen (value) * 2 + strlen (argv[1]) + 1; 7885 result = XNEWVAR (char, len); 7886 for (ptr = result; *value; ptr += 2) 7887 { 7888 ptr[0] = '\\'; 7889 ptr[1] = *value++; 7890 } 7891 7892 strcpy (ptr, argv[1]); 7893 7894 return result; 7895 } 7896 7897 /* if-exists built-in spec function. 7898 7899 Checks to see if the file specified by the absolute pathname in 7900 ARGS exists. Returns that pathname if found. 7901 7902 The usual use for this function is to check for a library file 7903 (whose name has been expanded with %s). */ 7904 7905 static const char * 7906 if_exists_spec_function (int argc, const char **argv) 7907 { 7908 /* Must have only one argument. */ 7909 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) 7910 return argv[0]; 7911 7912 return NULL; 7913 } 7914 7915 /* if-exists-else built-in spec function. 7916 7917 This is like if-exists, but takes an additional argument which 7918 is returned if the first argument does not exist. */ 7919 7920 static const char * 7921 if_exists_else_spec_function (int argc, const char **argv) 7922 { 7923 /* Must have exactly two arguments. */ 7924 if (argc != 2) 7925 return NULL; 7926 7927 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) 7928 return argv[0]; 7929 7930 return argv[1]; 7931 } 7932 7933 /* replace-outfile built-in spec function. 7934 7935 This looks for the first argument in the outfiles array's name and 7936 replaces it with the second argument. */ 7937 7938 static const char * 7939 replace_outfile_spec_function (int argc, const char **argv) 7940 { 7941 int i; 7942 /* Must have exactly two arguments. */ 7943 if (argc != 2) 7944 abort (); 7945 7946 for (i = 0; i < n_infiles; i++) 7947 { 7948 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) 7949 outfiles[i] = xstrdup (argv[1]); 7950 } 7951 return NULL; 7952 } 7953 7954 /* remove-outfile built-in spec function. 7955 * 7956 * This looks for the first argument in the outfiles array's name and 7957 * removes it. */ 7958 7959 static const char * 7960 remove_outfile_spec_function (int argc, const char **argv) 7961 { 7962 int i; 7963 /* Must have exactly one argument. */ 7964 if (argc != 1) 7965 abort (); 7966 7967 for (i = 0; i < n_infiles; i++) 7968 { 7969 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) 7970 outfiles[i] = NULL; 7971 } 7972 return NULL; 7973 } 7974 7975 /* Given two version numbers, compares the two numbers. 7976 A version number must match the regular expression 7977 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))* 7978 */ 7979 static int 7980 compare_version_strings (const char *v1, const char *v2) 7981 { 7982 int rresult; 7983 regex_t r; 7984 7985 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$", 7986 REG_EXTENDED | REG_NOSUB) != 0) 7987 abort (); 7988 rresult = regexec (&r, v1, 0, NULL, 0); 7989 if (rresult == REG_NOMATCH) 7990 fatal_error ("invalid version number %qs", v1); 7991 else if (rresult != 0) 7992 abort (); 7993 rresult = regexec (&r, v2, 0, NULL, 0); 7994 if (rresult == REG_NOMATCH) 7995 fatal_error ("invalid version number %qs", v2); 7996 else if (rresult != 0) 7997 abort (); 7998 7999 return strverscmp (v1, v2); 8000 } 8001 8002 8003 /* version_compare built-in spec function. 8004 8005 This takes an argument of the following form: 8006 8007 <comparison-op> <arg1> [<arg2>] <switch> <result> 8008 8009 and produces "result" if the comparison evaluates to true, 8010 and nothing if it doesn't. 8011 8012 The supported <comparison-op> values are: 8013 8014 >= true if switch is a later (or same) version than arg1 8015 !> opposite of >= 8016 < true if switch is an earlier version than arg1 8017 !< opposite of < 8018 >< true if switch is arg1 or later, and earlier than arg2 8019 <> true if switch is earlier than arg1 or is arg2 or later 8020 8021 If the switch is not present, the condition is false unless 8022 the first character of the <comparison-op> is '!'. 8023 8024 For example, 8025 %:version-compare(>= 10.3 mmacosx-version-min= -lmx) 8026 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */ 8027 8028 static const char * 8029 version_compare_spec_function (int argc, const char **argv) 8030 { 8031 int comp1, comp2; 8032 size_t switch_len; 8033 const char *switch_value = NULL; 8034 int nargs = 1, i; 8035 bool result; 8036 8037 if (argc < 3) 8038 fatal_error ("too few arguments to %%:version-compare"); 8039 if (argv[0][0] == '\0') 8040 abort (); 8041 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!') 8042 nargs = 2; 8043 if (argc != nargs + 3) 8044 fatal_error ("too many arguments to %%:version-compare"); 8045 8046 switch_len = strlen (argv[nargs + 1]); 8047 for (i = 0; i < n_switches; i++) 8048 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len) 8049 && check_live_switch (i, switch_len)) 8050 switch_value = switches[i].part1 + switch_len; 8051 8052 if (switch_value == NULL) 8053 comp1 = comp2 = -1; 8054 else 8055 { 8056 comp1 = compare_version_strings (switch_value, argv[1]); 8057 if (nargs == 2) 8058 comp2 = compare_version_strings (switch_value, argv[2]); 8059 else 8060 comp2 = -1; /* This value unused. */ 8061 } 8062 8063 switch (argv[0][0] << 8 | argv[0][1]) 8064 { 8065 case '>' << 8 | '=': 8066 result = comp1 >= 0; 8067 break; 8068 case '!' << 8 | '<': 8069 result = comp1 >= 0 || switch_value == NULL; 8070 break; 8071 case '<' << 8: 8072 result = comp1 < 0; 8073 break; 8074 case '!' << 8 | '>': 8075 result = comp1 < 0 || switch_value == NULL; 8076 break; 8077 case '>' << 8 | '<': 8078 result = comp1 >= 0 && comp2 < 0; 8079 break; 8080 case '<' << 8 | '>': 8081 result = comp1 < 0 || comp2 >= 0; 8082 break; 8083 8084 default: 8085 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]); 8086 } 8087 if (! result) 8088 return NULL; 8089 8090 return argv[nargs + 2]; 8091 } 8092 8093 /* %:include builtin spec function. This differs from %include in that it 8094 can be nested inside a spec, and thus be conditionalized. It takes 8095 one argument, the filename, and looks for it in the startfile path. 8096 The result is always NULL, i.e. an empty expansion. */ 8097 8098 static const char * 8099 include_spec_function (int argc, const char **argv) 8100 { 8101 char *file; 8102 8103 if (argc != 1) 8104 abort (); 8105 8106 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true); 8107 read_specs (file ? file : argv[0], FALSE); 8108 8109 return NULL; 8110 } 8111 8112 /* %:find-file spec function. This function replaces its argument by 8113 the file found thru find_file, that is the -print-file-name gcc 8114 program option. */ 8115 static const char * 8116 find_file_spec_function (int argc, const char **argv) 8117 { 8118 const char *file; 8119 8120 if (argc != 1) 8121 abort (); 8122 8123 file = find_file (argv[0]); 8124 return file; 8125 } 8126 8127 8128 /* %:find-plugindir spec function. This function replaces its argument 8129 by the -iplugindir=<dir> option. `dir' is found thru find_file, that 8130 is the -print-file-name gcc program option. */ 8131 static const char * 8132 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED) 8133 { 8134 const char *option; 8135 8136 if (argc != 0) 8137 abort (); 8138 8139 option = concat ("-iplugindir=", find_file ("plugin"), NULL); 8140 return option; 8141 } 8142 8143 8144 /* %:print-asm-header spec function. Print a banner to say that the 8145 following output is from the assembler. */ 8146 8147 static const char * 8148 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED, 8149 const char **argv ATTRIBUTE_UNUSED) 8150 { 8151 printf (_("Assembler options\n=================\n\n")); 8152 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n")); 8153 fflush (stdout); 8154 return NULL; 8155 } 8156 8157 /* Get a random number for -frandom-seed */ 8158 8159 static unsigned HOST_WIDE_INT 8160 get_random_number (void) 8161 { 8162 unsigned HOST_WIDE_INT ret = 0; 8163 int fd; 8164 8165 fd = open ("/dev/urandom", O_RDONLY); 8166 if (fd >= 0) 8167 { 8168 read (fd, &ret, sizeof (HOST_WIDE_INT)); 8169 close (fd); 8170 if (ret) 8171 return ret; 8172 } 8173 8174 /* Get some more or less random data. */ 8175 #ifdef HAVE_GETTIMEOFDAY 8176 { 8177 struct timeval tv; 8178 8179 gettimeofday (&tv, NULL); 8180 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000; 8181 } 8182 #else 8183 { 8184 time_t now = time (NULL); 8185 8186 if (now != (time_t)-1) 8187 ret = (unsigned) now; 8188 } 8189 #endif 8190 8191 return ret ^ getpid(); 8192 } 8193 8194 /* %:compare-debug-dump-opt spec function. Save the last argument, 8195 expected to be the last -fdump-final-insns option, or generate a 8196 temporary. */ 8197 8198 static const char * 8199 compare_debug_dump_opt_spec_function (int arg, 8200 const char **argv ATTRIBUTE_UNUSED) 8201 { 8202 const char *ret; 8203 char *name; 8204 int which; 8205 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; 8206 8207 if (arg != 0) 8208 fatal_error ("too many arguments to %%:compare-debug-dump-opt"); 8209 8210 do_spec_2 ("%{fdump-final-insns=*:%*}"); 8211 do_spec_1 (" ", 0, NULL); 8212 8213 if (VEC_length (const_char_p, argbuf) > 0 8214 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], ".")) 8215 { 8216 if (!compare_debug) 8217 return NULL; 8218 8219 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]); 8220 ret = NULL; 8221 } 8222 else 8223 { 8224 const char *ext = NULL; 8225 8226 if (VEC_length (const_char_p, argbuf) > 0) 8227 { 8228 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}"); 8229 ext = ".gkd"; 8230 } 8231 else if (!compare_debug) 8232 return NULL; 8233 else 8234 do_spec_2 ("%g.gkd"); 8235 8236 do_spec_1 (" ", 0, NULL); 8237 8238 gcc_assert (VEC_length (const_char_p, argbuf) > 0); 8239 8240 name = concat (VEC_last (const_char_p, argbuf), ext, NULL); 8241 8242 ret = concat ("-fdump-final-insns=", name, NULL); 8243 } 8244 8245 which = compare_debug < 0; 8246 debug_check_temp_file[which] = name; 8247 8248 if (!which) 8249 { 8250 unsigned HOST_WIDE_INT value = get_random_number (); 8251 8252 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); 8253 } 8254 8255 if (*random_seed) 8256 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ", 8257 ret, NULL); 8258 8259 if (which) 8260 *random_seed = 0; 8261 8262 return ret; 8263 } 8264 8265 static const char *debug_auxbase_opt; 8266 8267 /* %:compare-debug-self-opt spec function. Expands to the options 8268 that are to be passed in the second compilation of 8269 compare-debug. */ 8270 8271 static const char * 8272 compare_debug_self_opt_spec_function (int arg, 8273 const char **argv ATTRIBUTE_UNUSED) 8274 { 8275 if (arg != 0) 8276 fatal_error ("too many arguments to %%:compare-debug-self-opt"); 8277 8278 if (compare_debug >= 0) 8279 return NULL; 8280 8281 do_spec_2 ("%{c|S:%{o*:%*}}"); 8282 do_spec_1 (" ", 0, NULL); 8283 8284 if (VEC_length (const_char_p, argbuf) > 0) 8285 debug_auxbase_opt = concat ("-auxbase-strip ", 8286 VEC_last (const_char_p, argbuf), 8287 NULL); 8288 else 8289 debug_auxbase_opt = NULL; 8290 8291 return concat ("\ 8292 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \ 8293 %<fdump-final-insns=* -w -S -o %j \ 8294 %{!fcompare-debug-second:-fcompare-debug-second} \ 8295 ", compare_debug_opt, NULL); 8296 } 8297 8298 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase 8299 options that are to be passed in the second compilation of 8300 compare-debug. It expects, as an argument, the basename of the 8301 current input file name, with the .gk suffix appended to it. */ 8302 8303 static const char * 8304 compare_debug_auxbase_opt_spec_function (int arg, 8305 const char **argv) 8306 { 8307 char *name; 8308 int len; 8309 8310 if (arg == 0) 8311 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt"); 8312 8313 if (arg != 1) 8314 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt"); 8315 8316 if (compare_debug >= 0) 8317 return NULL; 8318 8319 len = strlen (argv[0]); 8320 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0) 8321 fatal_error ("argument to %%:compare-debug-auxbase-opt " 8322 "does not end in .gk"); 8323 8324 if (debug_auxbase_opt) 8325 return debug_auxbase_opt; 8326 8327 #define OPT "-auxbase " 8328 8329 len -= 3; 8330 name = (char*) xmalloc (sizeof (OPT) + len); 8331 memcpy (name, OPT, sizeof (OPT) - 1); 8332 memcpy (name + sizeof (OPT) - 1, argv[0], len); 8333 name[sizeof (OPT) - 1 + len] = '\0'; 8334 8335 #undef OPT 8336 8337 return name; 8338 } 8339 8340 /* %:pass-through-libs spec function. Finds all -l options and input 8341 file names in the lib spec passed to it, and makes a list of them 8342 prepended with the plugin option to cause them to be passed through 8343 to the final link after all the new object files have been added. */ 8344 8345 const char * 8346 pass_through_libs_spec_func (int argc, const char **argv) 8347 { 8348 char *prepended = xstrdup (" "); 8349 int n; 8350 /* Shlemiel the painter's algorithm. Innately horrible, but at least 8351 we know that there will never be more than a handful of strings to 8352 concat, and it's only once per run, so it's not worth optimising. */ 8353 for (n = 0; n < argc; n++) 8354 { 8355 char *old = prepended; 8356 /* Anything that isn't an option is a full path to an output 8357 file; pass it through if it ends in '.a'. Among options, 8358 pass only -l. */ 8359 if (argv[n][0] == '-' && argv[n][1] == 'l') 8360 { 8361 const char *lopt = argv[n] + 2; 8362 /* Handle both joined and non-joined -l options. If for any 8363 reason there's a trailing -l with no joined or following 8364 arg just discard it. */ 8365 if (!*lopt && ++n >= argc) 8366 break; 8367 else if (!*lopt) 8368 lopt = argv[n]; 8369 prepended = concat (prepended, "-plugin-opt=-pass-through=-l", 8370 lopt, " ", NULL); 8371 } 8372 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2)) 8373 { 8374 prepended = concat (prepended, "-plugin-opt=-pass-through=", 8375 argv[n], " ", NULL); 8376 } 8377 if (prepended != old) 8378 free (old); 8379 } 8380 return prepended; 8381 } 8382 8383 /* Insert backslash before spaces in ORIG (usually a file path), to 8384 avoid being broken by spec parser. 8385 8386 This function is needed as do_spec_1 treats white space (' ' and '\t') 8387 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so, 8388 the file name should be treated as a single argument rather than being 8389 broken into multiple. Solution is to insert '\\' before the space in a 8390 file name. 8391 8392 This function converts and only converts all occurrence of ' ' 8393 to '\\' + ' ' and '\t' to '\\' + '\t'. For example: 8394 "a b" -> "a\\ b" 8395 "a b" -> "a\\ \\ b" 8396 "a\tb" -> "a\\\tb" 8397 "a\\ b" -> "a\\\\ b" 8398 8399 orig: input null-terminating string that was allocated by xalloc. The 8400 memory it points to might be freed in this function. Behavior undefined 8401 if ORIG wasn't xalloced or was freed already at entry. 8402 8403 Return: ORIG if no conversion needed. Otherwise a newly allocated string 8404 that was converted from ORIG. */ 8405 8406 static char * 8407 convert_white_space (char *orig) 8408 { 8409 int len, number_of_space = 0; 8410 8411 for (len = 0; orig[len]; len++) 8412 if (orig[len] == ' ' || orig[len] == '\t') number_of_space++; 8413 8414 if (number_of_space) 8415 { 8416 char *new_spec = (char *) xmalloc (len + number_of_space + 1); 8417 int j, k; 8418 for (j = 0, k = 0; j <= len; j++, k++) 8419 { 8420 if (orig[j] == ' ' || orig[j] == '\t') 8421 new_spec[k++] = '\\'; 8422 new_spec[k] = orig[j]; 8423 } 8424 free (orig); 8425 return new_spec; 8426 } 8427 else 8428 return orig; 8429 } 8430