1 /* $NetBSD: parse.c,v 1.214 2016/04/06 09:57:00 gson Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: parse.c,v 1.214 2016/04/06 09:57:00 gson Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 #if 0 77 static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94"; 78 #else 79 __RCSID("$NetBSD: parse.c,v 1.214 2016/04/06 09:57:00 gson Exp $"); 80 #endif 81 #endif /* not lint */ 82 #endif 83 84 /*- 85 * parse.c -- 86 * Functions to parse a makefile. 87 * 88 * One function, Parse_Init, must be called before any functions 89 * in this module are used. After that, the function Parse_File is the 90 * main entry point and controls most of the other functions in this 91 * module. 92 * 93 * Most important structures are kept in Lsts. Directories for 94 * the .include "..." function are kept in the 'parseIncPath' Lst, while 95 * those for the .include <...> are kept in the 'sysIncPath' Lst. The 96 * targets currently being defined are kept in the 'targets' Lst. 97 * 98 * The variables 'fname' and 'lineno' are used to track the name 99 * of the current file and the line number in that file so that error 100 * messages can be more meaningful. 101 * 102 * Interface: 103 * Parse_Init Initialization function which must be 104 * called before anything else in this module 105 * is used. 106 * 107 * Parse_End Cleanup the module 108 * 109 * Parse_File Function used to parse a makefile. It must 110 * be given the name of the file, which should 111 * already have been opened, and a function 112 * to call to read a character from the file. 113 * 114 * Parse_IsVar Returns TRUE if the given line is a 115 * variable assignment. Used by MainParseArgs 116 * to determine if an argument is a target 117 * or a variable assignment. Used internally 118 * for pretty much the same thing... 119 * 120 * Parse_Error Function called when an error occurs in 121 * parsing. Used by the variable and 122 * conditional modules. 123 * Parse_MainName Returns a Lst of the main target to create. 124 */ 125 126 #include <sys/types.h> 127 #include <sys/mman.h> 128 #include <sys/stat.h> 129 #include <assert.h> 130 #include <ctype.h> 131 #include <errno.h> 132 #include <stdarg.h> 133 #include <stdio.h> 134 135 #ifndef MAP_FILE 136 #define MAP_FILE 0 137 #endif 138 #ifndef MAP_COPY 139 #define MAP_COPY MAP_PRIVATE 140 #endif 141 142 #include "make.h" 143 #include "hash.h" 144 #include "dir.h" 145 #include "job.h" 146 #include "buf.h" 147 #include "pathnames.h" 148 149 //////////////////////////////////////////////////////////// 150 // types and constants 151 152 /* 153 * Structure for a file being read ("included file") 154 */ 155 typedef struct IFile { 156 char *fname; /* name of file */ 157 int lineno; /* current line number in file */ 158 int first_lineno; /* line number of start of text */ 159 int cond_depth; /* 'if' nesting when file opened */ 160 Boolean depending; /* state of doing_depend on EOF */ 161 char *P_str; /* point to base of string buffer */ 162 char *P_ptr; /* point to next char of string buffer */ 163 char *P_end; /* point to the end of string buffer */ 164 char *(*nextbuf)(void *, size_t *); /* Function to get more data */ 165 void *nextbuf_arg; /* Opaque arg for nextbuf() */ 166 struct loadedfile *lf; /* loadedfile object, if any */ 167 } IFile; 168 169 170 /* 171 * These values are returned by ParseEOF to tell Parse_File whether to 172 * CONTINUE parsing, i.e. it had only reached the end of an include file, 173 * or if it's DONE. 174 */ 175 #define CONTINUE 1 176 #define DONE 0 177 178 /* 179 * Tokens for target attributes 180 */ 181 typedef enum { 182 Begin, /* .BEGIN */ 183 Default, /* .DEFAULT */ 184 End, /* .END */ 185 dotError, /* .ERROR */ 186 Ignore, /* .IGNORE */ 187 Includes, /* .INCLUDES */ 188 Interrupt, /* .INTERRUPT */ 189 Libs, /* .LIBS */ 190 Meta, /* .META */ 191 MFlags, /* .MFLAGS or .MAKEFLAGS */ 192 Main, /* .MAIN and we don't have anything user-specified to 193 * make */ 194 NoExport, /* .NOEXPORT */ 195 NoMeta, /* .NOMETA */ 196 NoMetaCmp, /* .NOMETA_CMP */ 197 NoPath, /* .NOPATH */ 198 Not, /* Not special */ 199 NotParallel, /* .NOTPARALLEL */ 200 Null, /* .NULL */ 201 ExObjdir, /* .OBJDIR */ 202 Order, /* .ORDER */ 203 Parallel, /* .PARALLEL */ 204 ExPath, /* .PATH */ 205 Phony, /* .PHONY */ 206 #ifdef POSIX 207 Posix, /* .POSIX */ 208 #endif 209 Precious, /* .PRECIOUS */ 210 ExShell, /* .SHELL */ 211 Silent, /* .SILENT */ 212 SingleShell, /* .SINGLESHELL */ 213 Stale, /* .STALE */ 214 Suffixes, /* .SUFFIXES */ 215 Wait, /* .WAIT */ 216 Attribute /* Generic attribute */ 217 } ParseSpecial; 218 219 /* 220 * Other tokens 221 */ 222 #define LPAREN '(' 223 #define RPAREN ')' 224 225 226 //////////////////////////////////////////////////////////// 227 // result data 228 229 /* 230 * The main target to create. This is the first target on the first 231 * dependency line in the first makefile. 232 */ 233 static GNode *mainNode; 234 235 //////////////////////////////////////////////////////////// 236 // eval state 237 238 /* targets we're working on */ 239 static Lst targets; 240 241 #ifdef CLEANUP 242 /* command lines for targets */ 243 static Lst targCmds; 244 #endif 245 246 /* 247 * specType contains the SPECial TYPE of the current target. It is 248 * Not if the target is unspecial. If it *is* special, however, the children 249 * are linked as children of the parent but not vice versa. This variable is 250 * set in ParseDoDependency 251 */ 252 static ParseSpecial specType; 253 254 /* 255 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER 256 * seen, then set to each successive source on the line. 257 */ 258 static GNode *predecessor; 259 260 //////////////////////////////////////////////////////////// 261 // parser state 262 263 /* true if currently in a dependency line or its commands */ 264 static Boolean inLine; 265 266 /* number of fatal errors */ 267 static int fatals = 0; 268 269 /* 270 * Variables for doing includes 271 */ 272 273 /* current file being read */ 274 static IFile *curFile; 275 276 /* stack of IFiles generated by .includes */ 277 static Lst includes; 278 279 /* include paths (lists of directories) */ 280 Lst parseIncPath; /* dirs for "..." includes */ 281 Lst sysIncPath; /* dirs for <...> includes */ 282 Lst defIncPath; /* default for sysIncPath */ 283 284 //////////////////////////////////////////////////////////// 285 // parser tables 286 287 /* 288 * The parseKeywords table is searched using binary search when deciding 289 * if a target or source is special. The 'spec' field is the ParseSpecial 290 * type of the keyword ("Not" if the keyword isn't special as a target) while 291 * the 'op' field is the operator to apply to the list of targets if the 292 * keyword is used as a source ("0" if the keyword isn't special as a source) 293 */ 294 static const struct { 295 const char *name; /* Name of keyword */ 296 ParseSpecial spec; /* Type when used as a target */ 297 int op; /* Operator when used as a source */ 298 } parseKeywords[] = { 299 { ".BEGIN", Begin, 0 }, 300 { ".DEFAULT", Default, 0 }, 301 { ".END", End, 0 }, 302 { ".ERROR", dotError, 0 }, 303 { ".EXEC", Attribute, OP_EXEC }, 304 { ".IGNORE", Ignore, OP_IGNORE }, 305 { ".INCLUDES", Includes, 0 }, 306 { ".INTERRUPT", Interrupt, 0 }, 307 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 308 { ".JOIN", Attribute, OP_JOIN }, 309 { ".LIBS", Libs, 0 }, 310 { ".MADE", Attribute, OP_MADE }, 311 { ".MAIN", Main, 0 }, 312 { ".MAKE", Attribute, OP_MAKE }, 313 { ".MAKEFLAGS", MFlags, 0 }, 314 { ".META", Meta, OP_META }, 315 { ".MFLAGS", MFlags, 0 }, 316 { ".NOMETA", NoMeta, OP_NOMETA }, 317 { ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP }, 318 { ".NOPATH", NoPath, OP_NOPATH }, 319 { ".NOTMAIN", Attribute, OP_NOTMAIN }, 320 { ".NOTPARALLEL", NotParallel, 0 }, 321 { ".NO_PARALLEL", NotParallel, 0 }, 322 { ".NULL", Null, 0 }, 323 { ".OBJDIR", ExObjdir, 0 }, 324 { ".OPTIONAL", Attribute, OP_OPTIONAL }, 325 { ".ORDER", Order, 0 }, 326 { ".PARALLEL", Parallel, 0 }, 327 { ".PATH", ExPath, 0 }, 328 { ".PHONY", Phony, OP_PHONY }, 329 #ifdef POSIX 330 { ".POSIX", Posix, 0 }, 331 #endif 332 { ".PRECIOUS", Precious, OP_PRECIOUS }, 333 { ".RECURSIVE", Attribute, OP_MAKE }, 334 { ".SHELL", ExShell, 0 }, 335 { ".SILENT", Silent, OP_SILENT }, 336 { ".SINGLESHELL", SingleShell, 0 }, 337 { ".STALE", Stale, 0 }, 338 { ".SUFFIXES", Suffixes, 0 }, 339 { ".USE", Attribute, OP_USE }, 340 { ".USEBEFORE", Attribute, OP_USEBEFORE }, 341 { ".WAIT", Wait, 0 }, 342 }; 343 344 //////////////////////////////////////////////////////////// 345 // local functions 346 347 static int ParseIsEscaped(const char *, const char *); 348 static void ParseErrorInternal(const char *, size_t, int, const char *, ...) 349 MAKE_ATTR_PRINTFLIKE(4,5); 350 static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list) 351 MAKE_ATTR_PRINTFLIKE(5, 0); 352 static int ParseFindKeyword(const char *); 353 static int ParseLinkSrc(void *, void *); 354 static int ParseDoOp(void *, void *); 355 static void ParseDoSrc(int, const char *); 356 static int ParseFindMain(void *, void *); 357 static int ParseAddDir(void *, void *); 358 static int ParseClearPath(void *, void *); 359 static void ParseDoDependency(char *); 360 static int ParseAddCmd(void *, void *); 361 static void ParseHasCommands(void *); 362 static void ParseDoInclude(char *); 363 static void ParseSetParseFile(const char *); 364 static void ParseSetIncludedFile(void); 365 #ifdef SYSVINCLUDE 366 static void ParseTraditionalInclude(char *); 367 #endif 368 #ifdef GMAKEEXPORT 369 static void ParseGmakeExport(char *); 370 #endif 371 static int ParseEOF(void); 372 static char *ParseReadLine(void); 373 static void ParseFinishLine(void); 374 static void ParseMark(GNode *); 375 376 //////////////////////////////////////////////////////////// 377 // file loader 378 379 struct loadedfile { 380 const char *path; /* name, for error reports */ 381 char *buf; /* contents buffer */ 382 size_t len; /* length of contents */ 383 size_t maplen; /* length of mmap area, or 0 */ 384 Boolean used; /* XXX: have we used the data yet */ 385 }; 386 387 /* 388 * Constructor/destructor for loadedfile 389 */ 390 static struct loadedfile * 391 loadedfile_create(const char *path) 392 { 393 struct loadedfile *lf; 394 395 lf = bmake_malloc(sizeof(*lf)); 396 lf->path = (path == NULL ? "(stdin)" : path); 397 lf->buf = NULL; 398 lf->len = 0; 399 lf->maplen = 0; 400 lf->used = FALSE; 401 return lf; 402 } 403 404 static void 405 loadedfile_destroy(struct loadedfile *lf) 406 { 407 if (lf->buf != NULL) { 408 if (lf->maplen > 0) { 409 munmap(lf->buf, lf->maplen); 410 } else { 411 free(lf->buf); 412 } 413 } 414 free(lf); 415 } 416 417 /* 418 * nextbuf() operation for loadedfile, as needed by the weird and twisted 419 * logic below. Once that's cleaned up, we can get rid of lf->used... 420 */ 421 static char * 422 loadedfile_nextbuf(void *x, size_t *len) 423 { 424 struct loadedfile *lf = x; 425 426 if (lf->used) { 427 return NULL; 428 } 429 lf->used = TRUE; 430 *len = lf->len; 431 return lf->buf; 432 } 433 434 /* 435 * Try to get the size of a file. 436 */ 437 static ReturnStatus 438 load_getsize(int fd, size_t *ret) 439 { 440 struct stat st; 441 442 if (fstat(fd, &st) < 0) { 443 return FAILURE; 444 } 445 446 if (!S_ISREG(st.st_mode)) { 447 return FAILURE; 448 } 449 450 /* 451 * st_size is an off_t, which is 64 bits signed; *ret is 452 * size_t, which might be 32 bits unsigned or 64 bits 453 * unsigned. Rather than being elaborate, just punt on 454 * files that are more than 2^31 bytes. We should never 455 * see a makefile that size in practice... 456 * 457 * While we're at it reject negative sizes too, just in case. 458 */ 459 if (st.st_size < 0 || st.st_size > 0x7fffffff) { 460 return FAILURE; 461 } 462 463 *ret = (size_t) st.st_size; 464 return SUCCESS; 465 } 466 467 /* 468 * Read in a file. 469 * 470 * Until the path search logic can be moved under here instead of 471 * being in the caller in another source file, we need to have the fd 472 * passed in already open. Bleh. 473 * 474 * If the path is NULL use stdin and (to insure against fd leaks) 475 * assert that the caller passed in -1. 476 */ 477 static struct loadedfile * 478 loadfile(const char *path, int fd) 479 { 480 struct loadedfile *lf; 481 long pagesize; 482 ssize_t result; 483 size_t bufpos; 484 485 lf = loadedfile_create(path); 486 487 if (path == NULL) { 488 assert(fd == -1); 489 fd = STDIN_FILENO; 490 } else { 491 #if 0 /* notyet */ 492 fd = open(path, O_RDONLY); 493 if (fd < 0) { 494 ... 495 Error("%s: %s", path, strerror(errno)); 496 exit(1); 497 } 498 #endif 499 } 500 501 if (load_getsize(fd, &lf->len) == SUCCESS) { 502 /* found a size, try mmap */ 503 pagesize = sysconf(_SC_PAGESIZE); 504 if (pagesize <= 0) { 505 pagesize = 0x1000; 506 } 507 /* round size up to a page */ 508 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 509 510 /* 511 * XXX hack for dealing with empty files; remove when 512 * we're no longer limited by interfacing to the old 513 * logic elsewhere in this file. 514 */ 515 if (lf->maplen == 0) { 516 lf->maplen = pagesize; 517 } 518 519 /* 520 * FUTURE: remove PROT_WRITE when the parser no longer 521 * needs to scribble on the input. 522 */ 523 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 524 MAP_FILE|MAP_COPY, fd, 0); 525 if (lf->buf != MAP_FAILED) { 526 /* succeeded */ 527 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 528 char *b = malloc(lf->len + 1); 529 b[lf->len] = '\n'; 530 memcpy(b, lf->buf, lf->len++); 531 munmap(lf->buf, lf->maplen); 532 lf->maplen = 0; 533 lf->buf = b; 534 } 535 goto done; 536 } 537 } 538 539 /* cannot mmap; load the traditional way */ 540 541 lf->maplen = 0; 542 lf->len = 1024; 543 lf->buf = bmake_malloc(lf->len); 544 545 bufpos = 0; 546 while (1) { 547 assert(bufpos <= lf->len); 548 if (bufpos == lf->len) { 549 lf->len *= 2; 550 lf->buf = bmake_realloc(lf->buf, lf->len); 551 } 552 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 553 if (result < 0) { 554 Error("%s: read error: %s", path, strerror(errno)); 555 exit(1); 556 } 557 if (result == 0) { 558 break; 559 } 560 bufpos += result; 561 } 562 assert(bufpos <= lf->len); 563 lf->len = bufpos; 564 565 /* truncate malloc region to actual length (maybe not useful) */ 566 if (lf->len > 0) { 567 lf->buf = bmake_realloc(lf->buf, lf->len); 568 } 569 570 done: 571 if (path != NULL) { 572 close(fd); 573 } 574 return lf; 575 } 576 577 //////////////////////////////////////////////////////////// 578 // old code 579 580 /*- 581 *---------------------------------------------------------------------- 582 * ParseIsEscaped -- 583 * Check if the current character is escaped on the current line 584 * 585 * Results: 586 * 0 if the character is not backslash escaped, 1 otherwise 587 * 588 * Side Effects: 589 * None 590 *---------------------------------------------------------------------- 591 */ 592 static int 593 ParseIsEscaped(const char *line, const char *c) 594 { 595 int active = 0; 596 for (;;) { 597 if (line == c) 598 return active; 599 if (*--c != '\\') 600 return active; 601 active = !active; 602 } 603 } 604 605 /*- 606 *---------------------------------------------------------------------- 607 * ParseFindKeyword -- 608 * Look in the table of keywords for one matching the given string. 609 * 610 * Input: 611 * str String to find 612 * 613 * Results: 614 * The index of the keyword, or -1 if it isn't there. 615 * 616 * Side Effects: 617 * None 618 *---------------------------------------------------------------------- 619 */ 620 static int 621 ParseFindKeyword(const char *str) 622 { 623 int start, end, cur; 624 int diff; 625 626 start = 0; 627 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 628 629 do { 630 cur = start + ((end - start) / 2); 631 diff = strcmp(str, parseKeywords[cur].name); 632 633 if (diff == 0) { 634 return (cur); 635 } else if (diff < 0) { 636 end = cur - 1; 637 } else { 638 start = cur + 1; 639 } 640 } while (start <= end); 641 return (-1); 642 } 643 644 /*- 645 * ParseVErrorInternal -- 646 * Error message abort function for parsing. Prints out the context 647 * of the error (line number and file) as well as the message with 648 * two optional arguments. 649 * 650 * Results: 651 * None 652 * 653 * Side Effects: 654 * "fatals" is incremented if the level is PARSE_FATAL. 655 */ 656 /* VARARGS */ 657 static void 658 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 659 const char *fmt, va_list ap) 660 { 661 static Boolean fatal_warning_error_printed = FALSE; 662 663 (void)fprintf(f, "%s: ", progname); 664 665 if (cfname != NULL) { 666 (void)fprintf(f, "\""); 667 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 668 char *cp; 669 const char *dir; 670 671 /* 672 * Nothing is more annoying than not knowing 673 * which Makefile is the culprit. 674 */ 675 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 676 if (dir == NULL || *dir == '\0' || 677 (*dir == '.' && dir[1] == '\0')) 678 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 679 if (dir == NULL) 680 dir = "."; 681 682 (void)fprintf(f, "%s/%s", dir, cfname); 683 } else 684 (void)fprintf(f, "%s", cfname); 685 686 (void)fprintf(f, "\" line %d: ", (int)clineno); 687 } 688 if (type == PARSE_WARNING) 689 (void)fprintf(f, "warning: "); 690 (void)vfprintf(f, fmt, ap); 691 (void)fprintf(f, "\n"); 692 (void)fflush(f); 693 if (type == PARSE_FATAL || parseWarnFatal) 694 fatals += 1; 695 if (parseWarnFatal && !fatal_warning_error_printed) { 696 Error("parsing warnings being treated as errors"); 697 fatal_warning_error_printed = TRUE; 698 } 699 } 700 701 /*- 702 * ParseErrorInternal -- 703 * Error function 704 * 705 * Results: 706 * None 707 * 708 * Side Effects: 709 * None 710 */ 711 /* VARARGS */ 712 static void 713 ParseErrorInternal(const char *cfname, size_t clineno, int type, 714 const char *fmt, ...) 715 { 716 va_list ap; 717 718 va_start(ap, fmt); 719 (void)fflush(stdout); 720 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 721 va_end(ap); 722 723 if (debug_file != stderr && debug_file != stdout) { 724 va_start(ap, fmt); 725 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 726 va_end(ap); 727 } 728 } 729 730 /*- 731 * Parse_Error -- 732 * External interface to ParseErrorInternal; uses the default filename 733 * Line number. 734 * 735 * Results: 736 * None 737 * 738 * Side Effects: 739 * None 740 */ 741 /* VARARGS */ 742 void 743 Parse_Error(int type, const char *fmt, ...) 744 { 745 va_list ap; 746 const char *fname; 747 size_t lineno; 748 749 if (curFile == NULL) { 750 fname = NULL; 751 lineno = 0; 752 } else { 753 fname = curFile->fname; 754 lineno = curFile->lineno; 755 } 756 757 va_start(ap, fmt); 758 (void)fflush(stdout); 759 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 760 va_end(ap); 761 762 if (debug_file != stderr && debug_file != stdout) { 763 va_start(ap, fmt); 764 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 765 va_end(ap); 766 } 767 } 768 769 770 /* 771 * ParseMessage 772 * Parse a .info .warning or .error directive 773 * 774 * The input is the line minus the ".". We substitute 775 * variables, print the message and exit(1) (for .error) or just print 776 * a warning if the directive is malformed. 777 */ 778 static Boolean 779 ParseMessage(char *line) 780 { 781 int mtype; 782 783 switch(*line) { 784 case 'i': 785 mtype = 0; 786 break; 787 case 'w': 788 mtype = PARSE_WARNING; 789 break; 790 case 'e': 791 mtype = PARSE_FATAL; 792 break; 793 default: 794 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 795 return FALSE; 796 } 797 798 while (isalpha((unsigned char)*line)) 799 line++; 800 if (!isspace((unsigned char)*line)) 801 return FALSE; /* not for us */ 802 while (isspace((unsigned char)*line)) 803 line++; 804 805 line = Var_Subst(NULL, line, VAR_CMD, VARF_WANTRES); 806 Parse_Error(mtype, "%s", line); 807 free(line); 808 809 if (mtype == PARSE_FATAL) { 810 /* Terminate immediately. */ 811 exit(1); 812 } 813 return TRUE; 814 } 815 816 /*- 817 *--------------------------------------------------------------------- 818 * ParseLinkSrc -- 819 * Link the parent node to its new child. Used in a Lst_ForEach by 820 * ParseDoDependency. If the specType isn't 'Not', the parent 821 * isn't linked as a parent of the child. 822 * 823 * Input: 824 * pgnp The parent node 825 * cgpn The child node 826 * 827 * Results: 828 * Always = 0 829 * 830 * Side Effects: 831 * New elements are added to the parents list of cgn and the 832 * children list of cgn. the unmade field of pgn is updated 833 * to reflect the additional child. 834 *--------------------------------------------------------------------- 835 */ 836 static int 837 ParseLinkSrc(void *pgnp, void *cgnp) 838 { 839 GNode *pgn = (GNode *)pgnp; 840 GNode *cgn = (GNode *)cgnp; 841 842 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 843 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 844 (void)Lst_AtEnd(pgn->children, cgn); 845 if (specType == Not) 846 (void)Lst_AtEnd(cgn->parents, pgn); 847 pgn->unmade += 1; 848 if (DEBUG(PARSE)) { 849 fprintf(debug_file, "# %s: added child %s - %s\n", __func__, 850 pgn->name, cgn->name); 851 Targ_PrintNode(pgn, 0); 852 Targ_PrintNode(cgn, 0); 853 } 854 return (0); 855 } 856 857 /*- 858 *--------------------------------------------------------------------- 859 * ParseDoOp -- 860 * Apply the parsed operator to the given target node. Used in a 861 * Lst_ForEach call by ParseDoDependency once all targets have 862 * been found and their operator parsed. If the previous and new 863 * operators are incompatible, a major error is taken. 864 * 865 * Input: 866 * gnp The node to which the operator is to be applied 867 * opp The operator to apply 868 * 869 * Results: 870 * Always 0 871 * 872 * Side Effects: 873 * The type field of the node is altered to reflect any new bits in 874 * the op. 875 *--------------------------------------------------------------------- 876 */ 877 static int 878 ParseDoOp(void *gnp, void *opp) 879 { 880 GNode *gn = (GNode *)gnp; 881 int op = *(int *)opp; 882 /* 883 * If the dependency mask of the operator and the node don't match and 884 * the node has actually had an operator applied to it before, and 885 * the operator actually has some dependency information in it, complain. 886 */ 887 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 888 !OP_NOP(gn->type) && !OP_NOP(op)) 889 { 890 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 891 return (1); 892 } 893 894 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 895 /* 896 * If the node was the object of a :: operator, we need to create a 897 * new instance of it for the children and commands on this dependency 898 * line. The new instance is placed on the 'cohorts' list of the 899 * initial one (note the initial one is not on its own cohorts list) 900 * and the new instance is linked to all parents of the initial 901 * instance. 902 */ 903 GNode *cohort; 904 905 /* 906 * Propagate copied bits to the initial node. They'll be propagated 907 * back to the rest of the cohorts later. 908 */ 909 gn->type |= op & ~OP_OPMASK; 910 911 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 912 if (doing_depend) 913 ParseMark(cohort); 914 /* 915 * Make the cohort invisible as well to avoid duplicating it into 916 * other variables. True, parents of this target won't tend to do 917 * anything with their local variables, but better safe than 918 * sorry. (I think this is pointless now, since the relevant list 919 * traversals will no longer see this node anyway. -mycroft) 920 */ 921 cohort->type = op | OP_INVISIBLE; 922 (void)Lst_AtEnd(gn->cohorts, cohort); 923 cohort->centurion = gn; 924 gn->unmade_cohorts += 1; 925 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 926 gn->unmade_cohorts); 927 } else { 928 /* 929 * We don't want to nuke any previous flags (whatever they were) so we 930 * just OR the new operator into the old 931 */ 932 gn->type |= op; 933 } 934 935 return (0); 936 } 937 938 /*- 939 *--------------------------------------------------------------------- 940 * ParseDoSrc -- 941 * Given the name of a source, figure out if it is an attribute 942 * and apply it to the targets if it is. Else decide if there is 943 * some attribute which should be applied *to* the source because 944 * of some special target and apply it if so. Otherwise, make the 945 * source be a child of the targets in the list 'targets' 946 * 947 * Input: 948 * tOp operator (if any) from special targets 949 * src name of the source to handle 950 * 951 * Results: 952 * None 953 * 954 * Side Effects: 955 * Operator bits may be added to the list of targets or to the source. 956 * The targets may have a new source added to their lists of children. 957 *--------------------------------------------------------------------- 958 */ 959 static void 960 ParseDoSrc(int tOp, const char *src) 961 { 962 GNode *gn = NULL; 963 static int wait_number = 0; 964 char wait_src[16]; 965 966 if (*src == '.' && isupper ((unsigned char)src[1])) { 967 int keywd = ParseFindKeyword(src); 968 if (keywd != -1) { 969 int op = parseKeywords[keywd].op; 970 if (op != 0) { 971 Lst_ForEach(targets, ParseDoOp, &op); 972 return; 973 } 974 if (parseKeywords[keywd].spec == Wait) { 975 /* 976 * We add a .WAIT node in the dependency list. 977 * After any dynamic dependencies (and filename globbing) 978 * have happened, it is given a dependency on the each 979 * previous child back to and previous .WAIT node. 980 * The next child won't be scheduled until the .WAIT node 981 * is built. 982 * We give each .WAIT node a unique name (mainly for diag). 983 */ 984 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 985 gn = Targ_FindNode(wait_src, TARG_NOHASH); 986 if (doing_depend) 987 ParseMark(gn); 988 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 989 Lst_ForEach(targets, ParseLinkSrc, gn); 990 return; 991 } 992 } 993 } 994 995 switch (specType) { 996 case Main: 997 /* 998 * If we have noted the existence of a .MAIN, it means we need 999 * to add the sources of said target to the list of things 1000 * to create. The string 'src' is likely to be free, so we 1001 * must make a new copy of it. Note that this will only be 1002 * invoked if the user didn't specify a target on the command 1003 * line. This is to allow #ifmake's to succeed, or something... 1004 */ 1005 (void)Lst_AtEnd(create, bmake_strdup(src)); 1006 /* 1007 * Add the name to the .TARGETS variable as well, so the user can 1008 * employ that, if desired. 1009 */ 1010 Var_Append(".TARGETS", src, VAR_GLOBAL); 1011 return; 1012 1013 case Order: 1014 /* 1015 * Create proper predecessor/successor links between the previous 1016 * source and the current one. 1017 */ 1018 gn = Targ_FindNode(src, TARG_CREATE); 1019 if (doing_depend) 1020 ParseMark(gn); 1021 if (predecessor != NULL) { 1022 (void)Lst_AtEnd(predecessor->order_succ, gn); 1023 (void)Lst_AtEnd(gn->order_pred, predecessor); 1024 if (DEBUG(PARSE)) { 1025 fprintf(debug_file, "# %s: added Order dependency %s - %s\n", 1026 __func__, predecessor->name, gn->name); 1027 Targ_PrintNode(predecessor, 0); 1028 Targ_PrintNode(gn, 0); 1029 } 1030 } 1031 /* 1032 * The current source now becomes the predecessor for the next one. 1033 */ 1034 predecessor = gn; 1035 break; 1036 1037 default: 1038 /* 1039 * If the source is not an attribute, we need to find/create 1040 * a node for it. After that we can apply any operator to it 1041 * from a special target or link it to its parents, as 1042 * appropriate. 1043 * 1044 * In the case of a source that was the object of a :: operator, 1045 * the attribute is applied to all of its instances (as kept in 1046 * the 'cohorts' list of the node) or all the cohorts are linked 1047 * to all the targets. 1048 */ 1049 1050 /* Find/create the 'src' node and attach to all targets */ 1051 gn = Targ_FindNode(src, TARG_CREATE); 1052 if (doing_depend) 1053 ParseMark(gn); 1054 if (tOp) { 1055 gn->type |= tOp; 1056 } else { 1057 Lst_ForEach(targets, ParseLinkSrc, gn); 1058 } 1059 break; 1060 } 1061 } 1062 1063 /*- 1064 *----------------------------------------------------------------------- 1065 * ParseFindMain -- 1066 * Find a real target in the list and set it to be the main one. 1067 * Called by ParseDoDependency when a main target hasn't been found 1068 * yet. 1069 * 1070 * Input: 1071 * gnp Node to examine 1072 * 1073 * Results: 1074 * 0 if main not found yet, 1 if it is. 1075 * 1076 * Side Effects: 1077 * mainNode is changed and Targ_SetMain is called. 1078 * 1079 *----------------------------------------------------------------------- 1080 */ 1081 static int 1082 ParseFindMain(void *gnp, void *dummy) 1083 { 1084 GNode *gn = (GNode *)gnp; 1085 if ((gn->type & OP_NOTARGET) == 0) { 1086 mainNode = gn; 1087 Targ_SetMain(gn); 1088 return (dummy ? 1 : 1); 1089 } else { 1090 return (dummy ? 0 : 0); 1091 } 1092 } 1093 1094 /*- 1095 *----------------------------------------------------------------------- 1096 * ParseAddDir -- 1097 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1098 * 1099 * Results: 1100 * === 0 1101 * 1102 * Side Effects: 1103 * See Dir_AddDir. 1104 * 1105 *----------------------------------------------------------------------- 1106 */ 1107 static int 1108 ParseAddDir(void *path, void *name) 1109 { 1110 (void)Dir_AddDir((Lst) path, (char *)name); 1111 return(0); 1112 } 1113 1114 /*- 1115 *----------------------------------------------------------------------- 1116 * ParseClearPath -- 1117 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1118 * 1119 * Results: 1120 * === 0 1121 * 1122 * Side Effects: 1123 * See Dir_ClearPath 1124 * 1125 *----------------------------------------------------------------------- 1126 */ 1127 static int 1128 ParseClearPath(void *path, void *dummy) 1129 { 1130 Dir_ClearPath((Lst) path); 1131 return(dummy ? 0 : 0); 1132 } 1133 1134 /*- 1135 *--------------------------------------------------------------------- 1136 * ParseDoDependency -- 1137 * Parse the dependency line in line. 1138 * 1139 * Input: 1140 * line the line to parse 1141 * 1142 * Results: 1143 * None 1144 * 1145 * Side Effects: 1146 * The nodes of the sources are linked as children to the nodes of the 1147 * targets. Some nodes may be created. 1148 * 1149 * We parse a dependency line by first extracting words from the line and 1150 * finding nodes in the list of all targets with that name. This is done 1151 * until a character is encountered which is an operator character. Currently 1152 * these are only ! and :. At this point the operator is parsed and the 1153 * pointer into the line advanced until the first source is encountered. 1154 * The parsed operator is applied to each node in the 'targets' list, 1155 * which is where the nodes found for the targets are kept, by means of 1156 * the ParseDoOp function. 1157 * The sources are read in much the same way as the targets were except 1158 * that now they are expanded using the wildcarding scheme of the C-Shell 1159 * and all instances of the resulting words in the list of all targets 1160 * are found. Each of the resulting nodes is then linked to each of the 1161 * targets as one of its children. 1162 * Certain targets are handled specially. These are the ones detailed 1163 * by the specType variable. 1164 * The storing of transformation rules is also taken care of here. 1165 * A target is recognized as a transformation rule by calling 1166 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1167 * from the suffix module via Suff_AddTransform rather than the standard 1168 * Targ_FindNode in the target module. 1169 *--------------------------------------------------------------------- 1170 */ 1171 static void 1172 ParseDoDependency(char *line) 1173 { 1174 char *cp; /* our current position */ 1175 GNode *gn = NULL; /* a general purpose temporary node */ 1176 int op; /* the operator on the line */ 1177 char savec; /* a place to save a character */ 1178 Lst paths; /* List of search paths to alter when parsing 1179 * a list of .PATH targets */ 1180 int tOp; /* operator from special target */ 1181 Lst sources; /* list of archive source names after 1182 * expansion */ 1183 Lst curTargs; /* list of target names to be found and added 1184 * to the targets list */ 1185 char *lstart = line; 1186 1187 if (DEBUG(PARSE)) 1188 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1189 tOp = 0; 1190 1191 specType = Not; 1192 paths = NULL; 1193 1194 curTargs = Lst_Init(FALSE); 1195 1196 /* 1197 * First, grind through the targets. 1198 */ 1199 1200 do { 1201 /* 1202 * Here LINE points to the beginning of the next word, and 1203 * LSTART points to the actual beginning of the line. 1204 */ 1205 1206 /* Find the end of the next word. */ 1207 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1208 !(isspace((unsigned char)*cp) || 1209 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1210 cp++) { 1211 if (*cp == '$') { 1212 /* 1213 * Must be a dynamic source (would have been expanded 1214 * otherwise), so call the Var module to parse the puppy 1215 * so we can safely advance beyond it...There should be 1216 * no errors in this, as they would have been discovered 1217 * in the initial Var_Subst and we wouldn't be here. 1218 */ 1219 int length; 1220 void *freeIt; 1221 1222 (void)Var_Parse(cp, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES, 1223 &length, &freeIt); 1224 free(freeIt); 1225 cp += length-1; 1226 } 1227 } 1228 1229 /* 1230 * If the word is followed by a left parenthesis, it's the 1231 * name of an object file inside an archive (ar file). 1232 */ 1233 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1234 /* 1235 * Archives must be handled specially to make sure the OP_ARCHV 1236 * flag is set in their 'type' field, for one thing, and because 1237 * things like "archive(file1.o file2.o file3.o)" are permissible. 1238 * Arch_ParseArchive will set 'line' to be the first non-blank 1239 * after the archive-spec. It creates/finds nodes for the members 1240 * and places them on the given list, returning SUCCESS if all 1241 * went well and FAILURE if there was an error in the 1242 * specification. On error, line should remain untouched. 1243 */ 1244 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1245 Parse_Error(PARSE_FATAL, 1246 "Error in archive specification: \"%s\"", line); 1247 goto out; 1248 } else { 1249 /* Done with this word; on to the next. */ 1250 cp = line; 1251 continue; 1252 } 1253 } 1254 1255 if (!*cp) { 1256 /* 1257 * We got to the end of the line while we were still 1258 * looking at targets. 1259 * 1260 * Ending a dependency line without an operator is a Bozo 1261 * no-no. As a heuristic, this is also often triggered by 1262 * undetected conflicts from cvs/rcs merges. 1263 */ 1264 if ((strncmp(line, "<<<<<<", 6) == 0) || 1265 (strncmp(line, "======", 6) == 0) || 1266 (strncmp(line, ">>>>>>", 6) == 0)) 1267 Parse_Error(PARSE_FATAL, 1268 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1269 else 1270 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1271 : "Need an operator"); 1272 goto out; 1273 } 1274 1275 /* Insert a null terminator. */ 1276 savec = *cp; 1277 *cp = '\0'; 1278 1279 /* 1280 * Got the word. See if it's a special target and if so set 1281 * specType to match it. 1282 */ 1283 if (*line == '.' && isupper ((unsigned char)line[1])) { 1284 /* 1285 * See if the target is a special target that must have it 1286 * or its sources handled specially. 1287 */ 1288 int keywd = ParseFindKeyword(line); 1289 if (keywd != -1) { 1290 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1291 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1292 goto out; 1293 } 1294 1295 specType = parseKeywords[keywd].spec; 1296 tOp = parseKeywords[keywd].op; 1297 1298 /* 1299 * Certain special targets have special semantics: 1300 * .PATH Have to set the dirSearchPath 1301 * variable too 1302 * .MAIN Its sources are only used if 1303 * nothing has been specified to 1304 * create. 1305 * .DEFAULT Need to create a node to hang 1306 * commands on, but we don't want 1307 * it in the graph, nor do we want 1308 * it to be the Main Target, so we 1309 * create it, set OP_NOTMAIN and 1310 * add it to the list, setting 1311 * DEFAULT to the new node for 1312 * later use. We claim the node is 1313 * A transformation rule to make 1314 * life easier later, when we'll 1315 * use Make_HandleUse to actually 1316 * apply the .DEFAULT commands. 1317 * .PHONY The list of targets 1318 * .NOPATH Don't search for file in the path 1319 * .STALE 1320 * .BEGIN 1321 * .END 1322 * .ERROR 1323 * .INTERRUPT Are not to be considered the 1324 * main target. 1325 * .NOTPARALLEL Make only one target at a time. 1326 * .SINGLESHELL Create a shell for each command. 1327 * .ORDER Must set initial predecessor to NULL 1328 */ 1329 switch (specType) { 1330 case ExPath: 1331 if (paths == NULL) { 1332 paths = Lst_Init(FALSE); 1333 } 1334 (void)Lst_AtEnd(paths, dirSearchPath); 1335 break; 1336 case Main: 1337 if (!Lst_IsEmpty(create)) { 1338 specType = Not; 1339 } 1340 break; 1341 case Begin: 1342 case End: 1343 case Stale: 1344 case dotError: 1345 case Interrupt: 1346 gn = Targ_FindNode(line, TARG_CREATE); 1347 if (doing_depend) 1348 ParseMark(gn); 1349 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1350 (void)Lst_AtEnd(targets, gn); 1351 break; 1352 case Default: 1353 gn = Targ_NewGN(".DEFAULT"); 1354 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1355 (void)Lst_AtEnd(targets, gn); 1356 DEFAULT = gn; 1357 break; 1358 case NotParallel: 1359 maxJobs = 1; 1360 break; 1361 case SingleShell: 1362 compatMake = TRUE; 1363 break; 1364 case Order: 1365 predecessor = NULL; 1366 break; 1367 default: 1368 break; 1369 } 1370 } else if (strncmp(line, ".PATH", 5) == 0) { 1371 /* 1372 * .PATH<suffix> has to be handled specially. 1373 * Call on the suffix module to give us a path to 1374 * modify. 1375 */ 1376 Lst path; 1377 1378 specType = ExPath; 1379 path = Suff_GetPath(&line[5]); 1380 if (path == NULL) { 1381 Parse_Error(PARSE_FATAL, 1382 "Suffix '%s' not defined (yet)", 1383 &line[5]); 1384 goto out; 1385 } else { 1386 if (paths == NULL) { 1387 paths = Lst_Init(FALSE); 1388 } 1389 (void)Lst_AtEnd(paths, path); 1390 } 1391 } 1392 } 1393 1394 /* 1395 * Have word in line. Get or create its node and stick it at 1396 * the end of the targets list 1397 */ 1398 if ((specType == Not) && (*line != '\0')) { 1399 if (Dir_HasWildcards(line)) { 1400 /* 1401 * Targets are to be sought only in the current directory, 1402 * so create an empty path for the thing. Note we need to 1403 * use Dir_Destroy in the destruction of the path as the 1404 * Dir module could have added a directory to the path... 1405 */ 1406 Lst emptyPath = Lst_Init(FALSE); 1407 1408 Dir_Expand(line, emptyPath, curTargs); 1409 1410 Lst_Destroy(emptyPath, Dir_Destroy); 1411 } else { 1412 /* 1413 * No wildcards, but we want to avoid code duplication, 1414 * so create a list with the word on it. 1415 */ 1416 (void)Lst_AtEnd(curTargs, line); 1417 } 1418 1419 /* Apply the targets. */ 1420 1421 while(!Lst_IsEmpty(curTargs)) { 1422 char *targName = (char *)Lst_DeQueue(curTargs); 1423 1424 if (!Suff_IsTransform (targName)) { 1425 gn = Targ_FindNode(targName, TARG_CREATE); 1426 } else { 1427 gn = Suff_AddTransform(targName); 1428 } 1429 if (doing_depend) 1430 ParseMark(gn); 1431 1432 (void)Lst_AtEnd(targets, gn); 1433 } 1434 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1435 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1436 } 1437 1438 /* Don't need the inserted null terminator any more. */ 1439 *cp = savec; 1440 1441 /* 1442 * If it is a special type and not .PATH, it's the only target we 1443 * allow on this line... 1444 */ 1445 if (specType != Not && specType != ExPath) { 1446 Boolean warning = FALSE; 1447 1448 while (*cp && (ParseIsEscaped(lstart, cp) || 1449 ((*cp != '!') && (*cp != ':')))) { 1450 if (ParseIsEscaped(lstart, cp) || 1451 (*cp != ' ' && *cp != '\t')) { 1452 warning = TRUE; 1453 } 1454 cp++; 1455 } 1456 if (warning) { 1457 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1458 } 1459 } else { 1460 while (*cp && isspace ((unsigned char)*cp)) { 1461 cp++; 1462 } 1463 } 1464 line = cp; 1465 } while (*line && (ParseIsEscaped(lstart, line) || 1466 ((*line != '!') && (*line != ':')))); 1467 1468 /* 1469 * Don't need the list of target names anymore... 1470 */ 1471 Lst_Destroy(curTargs, NULL); 1472 curTargs = NULL; 1473 1474 if (!Lst_IsEmpty(targets)) { 1475 switch(specType) { 1476 default: 1477 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1478 break; 1479 case Default: 1480 case Stale: 1481 case Begin: 1482 case End: 1483 case dotError: 1484 case Interrupt: 1485 /* 1486 * These four create nodes on which to hang commands, so 1487 * targets shouldn't be empty... 1488 */ 1489 case Not: 1490 /* 1491 * Nothing special here -- targets can be empty if it wants. 1492 */ 1493 break; 1494 } 1495 } 1496 1497 /* 1498 * Have now parsed all the target names. Must parse the operator next. The 1499 * result is left in op . 1500 */ 1501 if (*cp == '!') { 1502 op = OP_FORCE; 1503 } else if (*cp == ':') { 1504 if (cp[1] == ':') { 1505 op = OP_DOUBLEDEP; 1506 cp++; 1507 } else { 1508 op = OP_DEPENDS; 1509 } 1510 } else { 1511 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1512 : "Missing dependency operator"); 1513 goto out; 1514 } 1515 1516 /* Advance beyond the operator */ 1517 cp++; 1518 1519 /* 1520 * Apply the operator to the target. This is how we remember which 1521 * operator a target was defined with. It fails if the operator 1522 * used isn't consistent across all references. 1523 */ 1524 Lst_ForEach(targets, ParseDoOp, &op); 1525 1526 /* 1527 * Onward to the sources. 1528 * 1529 * LINE will now point to the first source word, if any, or the 1530 * end of the string if not. 1531 */ 1532 while (*cp && isspace ((unsigned char)*cp)) { 1533 cp++; 1534 } 1535 line = cp; 1536 1537 /* 1538 * Several special targets take different actions if present with no 1539 * sources: 1540 * a .SUFFIXES line with no sources clears out all old suffixes 1541 * a .PRECIOUS line makes all targets precious 1542 * a .IGNORE line ignores errors for all targets 1543 * a .SILENT line creates silence when making all targets 1544 * a .PATH removes all directories from the search path(s). 1545 */ 1546 if (!*line) { 1547 switch (specType) { 1548 case Suffixes: 1549 Suff_ClearSuffixes(); 1550 break; 1551 case Precious: 1552 allPrecious = TRUE; 1553 break; 1554 case Ignore: 1555 ignoreErrors = TRUE; 1556 break; 1557 case Silent: 1558 beSilent = TRUE; 1559 break; 1560 case ExPath: 1561 Lst_ForEach(paths, ParseClearPath, NULL); 1562 Dir_SetPATH(); 1563 break; 1564 #ifdef POSIX 1565 case Posix: 1566 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1567 break; 1568 #endif 1569 default: 1570 break; 1571 } 1572 } else if (specType == MFlags) { 1573 /* 1574 * Call on functions in main.c to deal with these arguments and 1575 * set the initial character to a null-character so the loop to 1576 * get sources won't get anything 1577 */ 1578 Main_ParseArgLine(line); 1579 *line = '\0'; 1580 } else if (specType == ExShell) { 1581 if (Job_ParseShell(line) != SUCCESS) { 1582 Parse_Error(PARSE_FATAL, "improper shell specification"); 1583 goto out; 1584 } 1585 *line = '\0'; 1586 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1587 *line = '\0'; 1588 } 1589 1590 /* 1591 * NOW GO FOR THE SOURCES 1592 */ 1593 if ((specType == Suffixes) || (specType == ExPath) || 1594 (specType == Includes) || (specType == Libs) || 1595 (specType == Null) || (specType == ExObjdir)) 1596 { 1597 while (*line) { 1598 /* 1599 * If the target was one that doesn't take files as its sources 1600 * but takes something like suffixes, we take each 1601 * space-separated word on the line as a something and deal 1602 * with it accordingly. 1603 * 1604 * If the target was .SUFFIXES, we take each source as a 1605 * suffix and add it to the list of suffixes maintained by the 1606 * Suff module. 1607 * 1608 * If the target was a .PATH, we add the source as a directory 1609 * to search on the search path. 1610 * 1611 * If it was .INCLUDES, the source is taken to be the suffix of 1612 * files which will be #included and whose search path should 1613 * be present in the .INCLUDES variable. 1614 * 1615 * If it was .LIBS, the source is taken to be the suffix of 1616 * files which are considered libraries and whose search path 1617 * should be present in the .LIBS variable. 1618 * 1619 * If it was .NULL, the source is the suffix to use when a file 1620 * has no valid suffix. 1621 * 1622 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1623 * and will cause make to do a new chdir to that path. 1624 */ 1625 while (*cp && !isspace ((unsigned char)*cp)) { 1626 cp++; 1627 } 1628 savec = *cp; 1629 *cp = '\0'; 1630 switch (specType) { 1631 case Suffixes: 1632 Suff_AddSuffix(line, &mainNode); 1633 break; 1634 case ExPath: 1635 Lst_ForEach(paths, ParseAddDir, line); 1636 break; 1637 case Includes: 1638 Suff_AddInclude(line); 1639 break; 1640 case Libs: 1641 Suff_AddLib(line); 1642 break; 1643 case Null: 1644 Suff_SetNull(line); 1645 break; 1646 case ExObjdir: 1647 Main_SetObjdir(line); 1648 break; 1649 default: 1650 break; 1651 } 1652 *cp = savec; 1653 if (savec != '\0') { 1654 cp++; 1655 } 1656 while (*cp && isspace ((unsigned char)*cp)) { 1657 cp++; 1658 } 1659 line = cp; 1660 } 1661 if (paths) { 1662 Lst_Destroy(paths, NULL); 1663 } 1664 if (specType == ExPath) 1665 Dir_SetPATH(); 1666 } else { 1667 while (*line) { 1668 /* 1669 * The targets take real sources, so we must beware of archive 1670 * specifications (i.e. things with left parentheses in them) 1671 * and handle them accordingly. 1672 */ 1673 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1674 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1675 /* 1676 * Only stop for a left parenthesis if it isn't at the 1677 * start of a word (that'll be for variable changes 1678 * later) and isn't preceded by a dollar sign (a dynamic 1679 * source). 1680 */ 1681 break; 1682 } 1683 } 1684 1685 if (*cp == LPAREN) { 1686 sources = Lst_Init(FALSE); 1687 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1688 Parse_Error(PARSE_FATAL, 1689 "Error in source archive spec \"%s\"", line); 1690 goto out; 1691 } 1692 1693 while (!Lst_IsEmpty (sources)) { 1694 gn = (GNode *)Lst_DeQueue(sources); 1695 ParseDoSrc(tOp, gn->name); 1696 } 1697 Lst_Destroy(sources, NULL); 1698 cp = line; 1699 } else { 1700 if (*cp) { 1701 *cp = '\0'; 1702 cp += 1; 1703 } 1704 1705 ParseDoSrc(tOp, line); 1706 } 1707 while (*cp && isspace ((unsigned char)*cp)) { 1708 cp++; 1709 } 1710 line = cp; 1711 } 1712 } 1713 1714 if (mainNode == NULL) { 1715 /* 1716 * If we have yet to decide on a main target to make, in the 1717 * absence of any user input, we want the first target on 1718 * the first dependency line that is actually a real target 1719 * (i.e. isn't a .USE or .EXEC rule) to be made. 1720 */ 1721 Lst_ForEach(targets, ParseFindMain, NULL); 1722 } 1723 1724 out: 1725 if (curTargs) 1726 Lst_Destroy(curTargs, NULL); 1727 } 1728 1729 /*- 1730 *--------------------------------------------------------------------- 1731 * Parse_IsVar -- 1732 * Return TRUE if the passed line is a variable assignment. A variable 1733 * assignment consists of a single word followed by optional whitespace 1734 * followed by either a += or an = operator. 1735 * This function is used both by the Parse_File function and main when 1736 * parsing the command-line arguments. 1737 * 1738 * Input: 1739 * line the line to check 1740 * 1741 * Results: 1742 * TRUE if it is. FALSE if it ain't 1743 * 1744 * Side Effects: 1745 * none 1746 *--------------------------------------------------------------------- 1747 */ 1748 Boolean 1749 Parse_IsVar(char *line) 1750 { 1751 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1752 char ch; 1753 int level = 0; 1754 #define ISEQOPERATOR(c) \ 1755 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1756 1757 /* 1758 * Skip to variable name 1759 */ 1760 for (;(*line == ' ') || (*line == '\t'); line++) 1761 continue; 1762 1763 /* Scan for one of the assignment operators outside a variable expansion */ 1764 while ((ch = *line++) != 0) { 1765 if (ch == '(' || ch == '{') { 1766 level++; 1767 continue; 1768 } 1769 if (ch == ')' || ch == '}') { 1770 level--; 1771 continue; 1772 } 1773 if (level != 0) 1774 continue; 1775 while (ch == ' ' || ch == '\t') { 1776 ch = *line++; 1777 wasSpace = TRUE; 1778 } 1779 #ifdef SUNSHCMD 1780 if (ch == ':' && strncmp(line, "sh", 2) == 0) { 1781 line += 2; 1782 continue; 1783 } 1784 #endif 1785 if (ch == '=') 1786 return TRUE; 1787 if (*line == '=' && ISEQOPERATOR(ch)) 1788 return TRUE; 1789 if (wasSpace) 1790 return FALSE; 1791 } 1792 1793 return FALSE; 1794 } 1795 1796 /*- 1797 *--------------------------------------------------------------------- 1798 * Parse_DoVar -- 1799 * Take the variable assignment in the passed line and do it in the 1800 * global context. 1801 * 1802 * Note: There is a lexical ambiguity with assignment modifier characters 1803 * in variable names. This routine interprets the character before the = 1804 * as a modifier. Therefore, an assignment like 1805 * C++=/usr/bin/CC 1806 * is interpreted as "C+ +=" instead of "C++ =". 1807 * 1808 * Input: 1809 * line a line guaranteed to be a variable assignment. 1810 * This reduces error checks 1811 * ctxt Context in which to do the assignment 1812 * 1813 * Results: 1814 * none 1815 * 1816 * Side Effects: 1817 * the variable structure of the given variable name is altered in the 1818 * global context. 1819 *--------------------------------------------------------------------- 1820 */ 1821 void 1822 Parse_DoVar(char *line, GNode *ctxt) 1823 { 1824 char *cp; /* pointer into line */ 1825 enum { 1826 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1827 } type; /* Type of assignment */ 1828 char *opc; /* ptr to operator character to 1829 * null-terminate the variable name */ 1830 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1831 * i.e. if any variable expansion was 1832 * performed */ 1833 int depth; 1834 1835 /* 1836 * Skip to variable name 1837 */ 1838 while ((*line == ' ') || (*line == '\t')) { 1839 line++; 1840 } 1841 1842 /* 1843 * Skip to operator character, nulling out whitespace as we go 1844 * XXX Rather than counting () and {} we should look for $ and 1845 * then expand the variable. 1846 */ 1847 for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) { 1848 if (*cp == '(' || *cp == '{') { 1849 depth++; 1850 continue; 1851 } 1852 if (*cp == ')' || *cp == '}') { 1853 depth--; 1854 continue; 1855 } 1856 if (depth == 0 && isspace ((unsigned char)*cp)) { 1857 *cp = '\0'; 1858 } 1859 } 1860 opc = cp-1; /* operator is the previous character */ 1861 *cp++ = '\0'; /* nuke the = */ 1862 1863 /* 1864 * Check operator type 1865 */ 1866 switch (*opc) { 1867 case '+': 1868 type = VAR_APPEND; 1869 *opc = '\0'; 1870 break; 1871 1872 case '?': 1873 /* 1874 * If the variable already has a value, we don't do anything. 1875 */ 1876 *opc = '\0'; 1877 if (Var_Exists(line, ctxt)) { 1878 return; 1879 } else { 1880 type = VAR_NORMAL; 1881 } 1882 break; 1883 1884 case ':': 1885 type = VAR_SUBST; 1886 *opc = '\0'; 1887 break; 1888 1889 case '!': 1890 type = VAR_SHELL; 1891 *opc = '\0'; 1892 break; 1893 1894 default: 1895 #ifdef SUNSHCMD 1896 while (opc > line && *opc != ':') 1897 opc--; 1898 1899 if (strncmp(opc, ":sh", 3) == 0) { 1900 type = VAR_SHELL; 1901 *opc = '\0'; 1902 break; 1903 } 1904 #endif 1905 type = VAR_NORMAL; 1906 break; 1907 } 1908 1909 while (isspace ((unsigned char)*cp)) { 1910 cp++; 1911 } 1912 1913 if (type == VAR_APPEND) { 1914 Var_Append(line, cp, ctxt); 1915 } else if (type == VAR_SUBST) { 1916 /* 1917 * Allow variables in the old value to be undefined, but leave their 1918 * invocation alone -- this is done by forcing oldVars to be false. 1919 * XXX: This can cause recursive variables, but that's not hard to do, 1920 * and this allows someone to do something like 1921 * 1922 * CFLAGS = $(.INCLUDES) 1923 * CFLAGS := -I.. $(CFLAGS) 1924 * 1925 * And not get an error. 1926 */ 1927 Boolean oldOldVars = oldVars; 1928 1929 oldVars = FALSE; 1930 1931 /* 1932 * make sure that we set the variable the first time to nothing 1933 * so that it gets substituted! 1934 */ 1935 if (!Var_Exists(line, ctxt)) 1936 Var_Set(line, "", ctxt, 0); 1937 1938 cp = Var_Subst(NULL, cp, ctxt, VARF_WANTRES|VARF_ASSIGN); 1939 oldVars = oldOldVars; 1940 freeCp = TRUE; 1941 1942 Var_Set(line, cp, ctxt, 0); 1943 } else if (type == VAR_SHELL) { 1944 char *res; 1945 const char *error; 1946 1947 if (strchr(cp, '$') != NULL) { 1948 /* 1949 * There's a dollar sign in the command, so perform variable 1950 * expansion on the whole thing. The resulting string will need 1951 * freeing when we're done, so set freeCmd to TRUE. 1952 */ 1953 cp = Var_Subst(NULL, cp, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES); 1954 freeCp = TRUE; 1955 } 1956 1957 res = Cmd_Exec(cp, &error); 1958 Var_Set(line, res, ctxt, 0); 1959 free(res); 1960 1961 if (error) 1962 Parse_Error(PARSE_WARNING, error, cp); 1963 } else { 1964 /* 1965 * Normal assignment -- just do it. 1966 */ 1967 Var_Set(line, cp, ctxt, 0); 1968 } 1969 if (strcmp(line, MAKEOVERRIDES) == 0) 1970 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1971 else if (strcmp(line, ".CURDIR") == 0) { 1972 /* 1973 * Somone is being (too?) clever... 1974 * Let's pretend they know what they are doing and 1975 * re-initialize the 'cur' Path. 1976 */ 1977 Dir_InitCur(cp); 1978 Dir_SetPATH(); 1979 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 1980 Job_SetPrefix(); 1981 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 1982 Var_Export(cp, 0); 1983 } 1984 if (freeCp) 1985 free(cp); 1986 } 1987 1988 1989 /* 1990 * ParseMaybeSubMake -- 1991 * Scan the command string to see if it a possible submake node 1992 * Input: 1993 * cmd the command to scan 1994 * Results: 1995 * TRUE if the command is possibly a submake, FALSE if not. 1996 */ 1997 static Boolean 1998 ParseMaybeSubMake(const char *cmd) 1999 { 2000 size_t i; 2001 static struct { 2002 const char *name; 2003 size_t len; 2004 } vals[] = { 2005 #define MKV(A) { A, sizeof(A) - 1 } 2006 MKV("${MAKE}"), 2007 MKV("${.MAKE}"), 2008 MKV("$(MAKE)"), 2009 MKV("$(.MAKE)"), 2010 MKV("make"), 2011 }; 2012 for (i = 0; i < sizeof(vals)/sizeof(vals[0]); i++) { 2013 char *ptr; 2014 if ((ptr = strstr(cmd, vals[i].name)) == NULL) 2015 continue; 2016 if ((ptr == cmd || !isalnum((unsigned char)ptr[-1])) 2017 && !isalnum((unsigned char)ptr[vals[i].len])) 2018 return TRUE; 2019 } 2020 return FALSE; 2021 } 2022 2023 /*- 2024 * ParseAddCmd -- 2025 * Lst_ForEach function to add a command line to all targets 2026 * 2027 * Input: 2028 * gnp the node to which the command is to be added 2029 * cmd the command to add 2030 * 2031 * Results: 2032 * Always 0 2033 * 2034 * Side Effects: 2035 * A new element is added to the commands list of the node, 2036 * and the node can be marked as a submake node if the command is 2037 * determined to be that. 2038 */ 2039 static int 2040 ParseAddCmd(void *gnp, void *cmd) 2041 { 2042 GNode *gn = (GNode *)gnp; 2043 2044 /* Add to last (ie current) cohort for :: targets */ 2045 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 2046 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 2047 2048 /* if target already supplied, ignore commands */ 2049 if (!(gn->type & OP_HAS_COMMANDS)) { 2050 (void)Lst_AtEnd(gn->commands, cmd); 2051 if (ParseMaybeSubMake(cmd)) 2052 gn->type |= OP_SUBMAKE; 2053 ParseMark(gn); 2054 } else { 2055 #ifdef notyet 2056 /* XXX: We cannot do this until we fix the tree */ 2057 (void)Lst_AtEnd(gn->commands, cmd); 2058 Parse_Error(PARSE_WARNING, 2059 "overriding commands for target \"%s\"; " 2060 "previous commands defined at %s: %d ignored", 2061 gn->name, gn->fname, gn->lineno); 2062 #else 2063 Parse_Error(PARSE_WARNING, 2064 "duplicate script for target \"%s\" ignored", 2065 gn->name); 2066 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 2067 "using previous script for \"%s\" defined here", 2068 gn->name); 2069 #endif 2070 } 2071 return(0); 2072 } 2073 2074 /*- 2075 *----------------------------------------------------------------------- 2076 * ParseHasCommands -- 2077 * Callback procedure for Parse_File when destroying the list of 2078 * targets on the last dependency line. Marks a target as already 2079 * having commands if it does, to keep from having shell commands 2080 * on multiple dependency lines. 2081 * 2082 * Input: 2083 * gnp Node to examine 2084 * 2085 * Results: 2086 * None 2087 * 2088 * Side Effects: 2089 * OP_HAS_COMMANDS may be set for the target. 2090 * 2091 *----------------------------------------------------------------------- 2092 */ 2093 static void 2094 ParseHasCommands(void *gnp) 2095 { 2096 GNode *gn = (GNode *)gnp; 2097 if (!Lst_IsEmpty(gn->commands)) { 2098 gn->type |= OP_HAS_COMMANDS; 2099 } 2100 } 2101 2102 /*- 2103 *----------------------------------------------------------------------- 2104 * Parse_AddIncludeDir -- 2105 * Add a directory to the path searched for included makefiles 2106 * bracketed by double-quotes. Used by functions in main.c 2107 * 2108 * Input: 2109 * dir The name of the directory to add 2110 * 2111 * Results: 2112 * None. 2113 * 2114 * Side Effects: 2115 * The directory is appended to the list. 2116 * 2117 *----------------------------------------------------------------------- 2118 */ 2119 void 2120 Parse_AddIncludeDir(char *dir) 2121 { 2122 (void)Dir_AddDir(parseIncPath, dir); 2123 } 2124 2125 /*- 2126 *--------------------------------------------------------------------- 2127 * ParseDoInclude -- 2128 * Push to another file. 2129 * 2130 * The input is the line minus the `.'. A file spec is a string 2131 * enclosed in <> or "". The former is looked for only in sysIncPath. 2132 * The latter in . and the directories specified by -I command line 2133 * options 2134 * 2135 * Results: 2136 * None 2137 * 2138 * Side Effects: 2139 * A structure is added to the includes Lst and readProc, lineno, 2140 * fname and curFILE are altered for the new file 2141 *--------------------------------------------------------------------- 2142 */ 2143 2144 static void 2145 Parse_include_file(char *file, Boolean isSystem, Boolean depinc, int silent) 2146 { 2147 struct loadedfile *lf; 2148 char *fullname; /* full pathname of file */ 2149 char *newName; 2150 char *prefEnd, *incdir; 2151 int fd; 2152 int i; 2153 2154 /* 2155 * Now we know the file's name and its search path, we attempt to 2156 * find the durn thing. A return of NULL indicates the file don't 2157 * exist. 2158 */ 2159 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2160 2161 if (fullname == NULL && !isSystem) { 2162 /* 2163 * Include files contained in double-quotes are first searched for 2164 * relative to the including file's location. We don't want to 2165 * cd there, of course, so we just tack on the old file's 2166 * leading path components and call Dir_FindFile to see if 2167 * we can locate the beast. 2168 */ 2169 2170 incdir = bmake_strdup(curFile->fname); 2171 prefEnd = strrchr(incdir, '/'); 2172 if (prefEnd != NULL) { 2173 *prefEnd = '\0'; 2174 /* Now do lexical processing of leading "../" on the filename */ 2175 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2176 prefEnd = strrchr(incdir + 1, '/'); 2177 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2178 break; 2179 *prefEnd = '\0'; 2180 } 2181 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2182 fullname = Dir_FindFile(newName, parseIncPath); 2183 if (fullname == NULL) 2184 fullname = Dir_FindFile(newName, dirSearchPath); 2185 free(newName); 2186 } 2187 free(incdir); 2188 2189 if (fullname == NULL) { 2190 /* 2191 * Makefile wasn't found in same directory as included makefile. 2192 * Search for it first on the -I search path, 2193 * then on the .PATH search path, if not found in a -I directory. 2194 * If we have a suffix specific path we should use that. 2195 */ 2196 char *suff; 2197 Lst suffPath = NULL; 2198 2199 if ((suff = strrchr(file, '.'))) { 2200 suffPath = Suff_GetPath(suff); 2201 if (suffPath != NULL) { 2202 fullname = Dir_FindFile(file, suffPath); 2203 } 2204 } 2205 if (fullname == NULL) { 2206 fullname = Dir_FindFile(file, parseIncPath); 2207 if (fullname == NULL) { 2208 fullname = Dir_FindFile(file, dirSearchPath); 2209 } 2210 } 2211 } 2212 } 2213 2214 /* Looking for a system file or file still not found */ 2215 if (fullname == NULL) { 2216 /* 2217 * Look for it on the system path 2218 */ 2219 fullname = Dir_FindFile(file, 2220 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2221 } 2222 2223 if (fullname == NULL) { 2224 if (!silent) 2225 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2226 return; 2227 } 2228 2229 /* Actually open the file... */ 2230 fd = open(fullname, O_RDONLY); 2231 if (fd == -1) { 2232 if (!silent) 2233 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2234 free(fullname); 2235 return; 2236 } 2237 2238 /* load it */ 2239 lf = loadfile(fullname, fd); 2240 2241 ParseSetIncludedFile(); 2242 /* Start reading from this file next */ 2243 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2244 curFile->lf = lf; 2245 if (depinc) 2246 doing_depend = depinc; /* only turn it on */ 2247 } 2248 2249 static void 2250 ParseDoInclude(char *line) 2251 { 2252 char endc; /* the character which ends the file spec */ 2253 char *cp; /* current position in file spec */ 2254 int silent = (*line != 'i') ? 1 : 0; 2255 char *file = &line[7 + silent]; 2256 2257 /* Skip to delimiter character so we know where to look */ 2258 while (*file == ' ' || *file == '\t') 2259 file++; 2260 2261 if (*file != '"' && *file != '<') { 2262 Parse_Error(PARSE_FATAL, 2263 ".include filename must be delimited by '\"' or '<'"); 2264 return; 2265 } 2266 2267 /* 2268 * Set the search path on which to find the include file based on the 2269 * characters which bracket its name. Angle-brackets imply it's 2270 * a system Makefile while double-quotes imply it's a user makefile 2271 */ 2272 if (*file == '<') { 2273 endc = '>'; 2274 } else { 2275 endc = '"'; 2276 } 2277 2278 /* Skip to matching delimiter */ 2279 for (cp = ++file; *cp && *cp != endc; cp++) 2280 continue; 2281 2282 if (*cp != endc) { 2283 Parse_Error(PARSE_FATAL, 2284 "Unclosed %cinclude filename. '%c' expected", 2285 '.', endc); 2286 return; 2287 } 2288 *cp = '\0'; 2289 2290 /* 2291 * Substitute for any variables in the file name before trying to 2292 * find the thing. 2293 */ 2294 file = Var_Subst(NULL, file, VAR_CMD, VARF_WANTRES); 2295 2296 Parse_include_file(file, endc == '>', (*line == 'd'), silent); 2297 free(file); 2298 } 2299 2300 2301 /*- 2302 *--------------------------------------------------------------------- 2303 * ParseSetIncludedFile -- 2304 * Set the .INCLUDEDFROMFILE variable to the contents of .PARSEFILE 2305 * and the .INCLUDEDFROMDIR variable to the contents of .PARSEDIR 2306 * 2307 * Results: 2308 * None 2309 * 2310 * Side Effects: 2311 * The .INCLUDEDFROMFILE variable is overwritten by the contents 2312 * of .PARSEFILE and the .INCLUDEDFROMDIR variable is overwriten 2313 * by the contents of .PARSEDIR 2314 *--------------------------------------------------------------------- 2315 */ 2316 static void 2317 ParseSetIncludedFile(void) 2318 { 2319 char *pf, *fp = NULL; 2320 char *pd, *dp = NULL; 2321 2322 pf = Var_Value(".PARSEFILE", VAR_GLOBAL, &fp); 2323 Var_Set(".INCLUDEDFROMFILE", pf, VAR_GLOBAL, 0); 2324 pd = Var_Value(".PARSEDIR", VAR_GLOBAL, &dp); 2325 Var_Set(".INCLUDEDFROMDIR", pd, VAR_GLOBAL, 0); 2326 2327 if (DEBUG(PARSE)) 2328 fprintf(debug_file, "%s: ${.INCLUDEDFROMDIR} = `%s' " 2329 "${.INCLUDEDFROMFILE} = `%s'\n", __func__, pd, pf); 2330 2331 free(fp); 2332 free(dp); 2333 } 2334 /*- 2335 *--------------------------------------------------------------------- 2336 * ParseSetParseFile -- 2337 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2338 * basename of the given filename 2339 * 2340 * Results: 2341 * None 2342 * 2343 * Side Effects: 2344 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2345 * dirname and basename of the given filename. 2346 *--------------------------------------------------------------------- 2347 */ 2348 static void 2349 ParseSetParseFile(const char *filename) 2350 { 2351 char *slash, *dirname; 2352 const char *pd, *pf; 2353 int len; 2354 2355 slash = strrchr(filename, '/'); 2356 if (slash == NULL) { 2357 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2358 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2359 dirname= NULL; 2360 } else { 2361 len = slash - filename; 2362 dirname = bmake_malloc(len + 1); 2363 memcpy(dirname, filename, len); 2364 dirname[len] = '\0'; 2365 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2366 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2367 } 2368 if (DEBUG(PARSE)) 2369 fprintf(debug_file, "%s: ${.PARSEDIR} = `%s' ${.PARSEFILE} = `%s'\n", 2370 __func__, pd, pf); 2371 free(dirname); 2372 } 2373 2374 /* 2375 * Track the makefiles we read - so makefiles can 2376 * set dependencies on them. 2377 * Avoid adding anything more than once. 2378 */ 2379 2380 static void 2381 ParseTrackInput(const char *name) 2382 { 2383 char *old; 2384 char *ep; 2385 char *fp = NULL; 2386 size_t name_len = strlen(name); 2387 2388 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2389 if (old) { 2390 ep = old + strlen(old) - name_len; 2391 /* does it contain name? */ 2392 for (; old != NULL; old = strchr(old, ' ')) { 2393 if (*old == ' ') 2394 old++; 2395 if (old >= ep) 2396 break; /* cannot contain name */ 2397 if (memcmp(old, name, name_len) == 0 2398 && (old[name_len] == 0 || old[name_len] == ' ')) 2399 goto cleanup; 2400 } 2401 } 2402 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2403 cleanup: 2404 if (fp) { 2405 free(fp); 2406 } 2407 } 2408 2409 2410 /*- 2411 *--------------------------------------------------------------------- 2412 * Parse_setInput -- 2413 * Start Parsing from the given source 2414 * 2415 * Results: 2416 * None 2417 * 2418 * Side Effects: 2419 * A structure is added to the includes Lst and readProc, lineno, 2420 * fname and curFile are altered for the new file 2421 *--------------------------------------------------------------------- 2422 */ 2423 void 2424 Parse_SetInput(const char *name, int line, int fd, 2425 char *(*nextbuf)(void *, size_t *), void *arg) 2426 { 2427 char *buf; 2428 size_t len; 2429 2430 if (name == NULL) 2431 name = curFile->fname; 2432 else 2433 ParseTrackInput(name); 2434 2435 if (DEBUG(PARSE)) 2436 fprintf(debug_file, "%s: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2437 __func__, name, line, fd, nextbuf, arg); 2438 2439 if (fd == -1 && nextbuf == NULL) 2440 /* sanity */ 2441 return; 2442 2443 if (curFile != NULL) 2444 /* Save exiting file info */ 2445 Lst_AtFront(includes, curFile); 2446 2447 /* Allocate and fill in new structure */ 2448 curFile = bmake_malloc(sizeof *curFile); 2449 2450 /* 2451 * Once the previous state has been saved, we can get down to reading 2452 * the new file. We set up the name of the file to be the absolute 2453 * name of the include file so error messages refer to the right 2454 * place. 2455 */ 2456 curFile->fname = bmake_strdup(name); 2457 curFile->lineno = line; 2458 curFile->first_lineno = line; 2459 curFile->nextbuf = nextbuf; 2460 curFile->nextbuf_arg = arg; 2461 curFile->lf = NULL; 2462 curFile->depending = doing_depend; /* restore this on EOF */ 2463 2464 assert(nextbuf != NULL); 2465 2466 /* Get first block of input data */ 2467 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2468 if (buf == NULL) { 2469 /* Was all a waste of time ... */ 2470 if (curFile->fname) 2471 free(curFile->fname); 2472 free(curFile); 2473 return; 2474 } 2475 curFile->P_str = buf; 2476 curFile->P_ptr = buf; 2477 curFile->P_end = buf+len; 2478 2479 curFile->cond_depth = Cond_save_depth(); 2480 ParseSetParseFile(name); 2481 } 2482 2483 #ifdef SYSVINCLUDE 2484 /*- 2485 *--------------------------------------------------------------------- 2486 * ParseTraditionalInclude -- 2487 * Push to another file. 2488 * 2489 * The input is the current line. The file name(s) are 2490 * following the "include". 2491 * 2492 * Results: 2493 * None 2494 * 2495 * Side Effects: 2496 * A structure is added to the includes Lst and readProc, lineno, 2497 * fname and curFILE are altered for the new file 2498 *--------------------------------------------------------------------- 2499 */ 2500 static void 2501 ParseTraditionalInclude(char *line) 2502 { 2503 char *cp; /* current position in file spec */ 2504 int done = 0; 2505 int silent = (line[0] != 'i') ? 1 : 0; 2506 char *file = &line[silent + 7]; 2507 char *all_files; 2508 2509 if (DEBUG(PARSE)) { 2510 fprintf(debug_file, "%s: %s\n", __func__, file); 2511 } 2512 2513 /* 2514 * Skip over whitespace 2515 */ 2516 while (isspace((unsigned char)*file)) 2517 file++; 2518 2519 /* 2520 * Substitute for any variables in the file name before trying to 2521 * find the thing. 2522 */ 2523 all_files = Var_Subst(NULL, file, VAR_CMD, VARF_WANTRES); 2524 2525 if (*file == '\0') { 2526 Parse_Error(PARSE_FATAL, 2527 "Filename missing from \"include\""); 2528 return; 2529 } 2530 2531 for (file = all_files; !done; file = cp + 1) { 2532 /* Skip to end of line or next whitespace */ 2533 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2534 continue; 2535 2536 if (*cp) 2537 *cp = '\0'; 2538 else 2539 done = 1; 2540 2541 Parse_include_file(file, FALSE, FALSE, silent); 2542 } 2543 free(all_files); 2544 } 2545 #endif 2546 2547 #ifdef GMAKEEXPORT 2548 /*- 2549 *--------------------------------------------------------------------- 2550 * ParseGmakeExport -- 2551 * Parse export <variable>=<value> 2552 * 2553 * And set the environment with it. 2554 * 2555 * Results: 2556 * None 2557 * 2558 * Side Effects: 2559 * None 2560 *--------------------------------------------------------------------- 2561 */ 2562 static void 2563 ParseGmakeExport(char *line) 2564 { 2565 char *variable = &line[6]; 2566 char *value; 2567 2568 if (DEBUG(PARSE)) { 2569 fprintf(debug_file, "%s: %s\n", __func__, variable); 2570 } 2571 2572 /* 2573 * Skip over whitespace 2574 */ 2575 while (isspace((unsigned char)*variable)) 2576 variable++; 2577 2578 for (value = variable; *value && *value != '='; value++) 2579 continue; 2580 2581 if (*value != '=') { 2582 Parse_Error(PARSE_FATAL, 2583 "Variable/Value missing from \"export\""); 2584 return; 2585 } 2586 *value++ = '\0'; /* terminate variable */ 2587 2588 /* 2589 * Expand the value before putting it in the environment. 2590 */ 2591 value = Var_Subst(NULL, value, VAR_CMD, VARF_WANTRES); 2592 setenv(variable, value, 1); 2593 } 2594 #endif 2595 2596 /*- 2597 *--------------------------------------------------------------------- 2598 * ParseEOF -- 2599 * Called when EOF is reached in the current file. If we were reading 2600 * an include file, the includes stack is popped and things set up 2601 * to go back to reading the previous file at the previous location. 2602 * 2603 * Results: 2604 * CONTINUE if there's more to do. DONE if not. 2605 * 2606 * Side Effects: 2607 * The old curFILE, is closed. The includes list is shortened. 2608 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2609 *--------------------------------------------------------------------- 2610 */ 2611 static int 2612 ParseEOF(void) 2613 { 2614 char *ptr; 2615 size_t len; 2616 2617 assert(curFile->nextbuf != NULL); 2618 2619 doing_depend = curFile->depending; /* restore this */ 2620 /* get next input buffer, if any */ 2621 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2622 curFile->P_ptr = ptr; 2623 curFile->P_str = ptr; 2624 curFile->P_end = ptr + len; 2625 curFile->lineno = curFile->first_lineno; 2626 if (ptr != NULL) { 2627 /* Iterate again */ 2628 return CONTINUE; 2629 } 2630 2631 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2632 Cond_restore_depth(curFile->cond_depth); 2633 2634 if (curFile->lf != NULL) { 2635 loadedfile_destroy(curFile->lf); 2636 curFile->lf = NULL; 2637 } 2638 2639 /* Dispose of curFile info */ 2640 /* Leak curFile->fname because all the gnodes have pointers to it */ 2641 free(curFile->P_str); 2642 free(curFile); 2643 2644 curFile = Lst_DeQueue(includes); 2645 2646 if (curFile == NULL) { 2647 /* We've run out of input */ 2648 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2649 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2650 Var_Delete(".INCLUDEDFROMDIR", VAR_GLOBAL); 2651 Var_Delete(".INCLUDEDFROMFILE", VAR_GLOBAL); 2652 return DONE; 2653 } 2654 2655 if (DEBUG(PARSE)) 2656 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2657 curFile->fname, curFile->lineno); 2658 2659 /* Restore the PARSEDIR/PARSEFILE variables */ 2660 ParseSetParseFile(curFile->fname); 2661 return (CONTINUE); 2662 } 2663 2664 #define PARSE_RAW 1 2665 #define PARSE_SKIP 2 2666 2667 static char * 2668 ParseGetLine(int flags, int *length) 2669 { 2670 IFile *cf = curFile; 2671 char *ptr; 2672 char ch; 2673 char *line; 2674 char *line_end; 2675 char *escaped; 2676 char *comment; 2677 char *tp; 2678 2679 /* Loop through blank lines and comment lines */ 2680 for (;;) { 2681 cf->lineno++; 2682 line = cf->P_ptr; 2683 ptr = line; 2684 line_end = line; 2685 escaped = NULL; 2686 comment = NULL; 2687 for (;;) { 2688 if (cf->P_end != NULL && ptr == cf->P_end) { 2689 /* end of buffer */ 2690 ch = 0; 2691 break; 2692 } 2693 ch = *ptr; 2694 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2695 if (cf->P_end == NULL) 2696 /* End of string (aka for loop) data */ 2697 break; 2698 /* see if there is more we can parse */ 2699 while (ptr++ < cf->P_end) { 2700 if ((ch = *ptr) == '\n') { 2701 if (ptr > line && ptr[-1] == '\\') 2702 continue; 2703 Parse_Error(PARSE_WARNING, 2704 "Zero byte read from file, skipping rest of line."); 2705 break; 2706 } 2707 } 2708 if (cf->nextbuf != NULL) { 2709 /* 2710 * End of this buffer; return EOF and outer logic 2711 * will get the next one. (eww) 2712 */ 2713 break; 2714 } 2715 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2716 return NULL; 2717 } 2718 2719 if (ch == '\\') { 2720 /* Don't treat next character as special, remember first one */ 2721 if (escaped == NULL) 2722 escaped = ptr; 2723 if (ptr[1] == '\n') 2724 cf->lineno++; 2725 ptr += 2; 2726 line_end = ptr; 2727 continue; 2728 } 2729 if (ch == '#' && comment == NULL) { 2730 /* Remember first '#' for comment stripping */ 2731 /* Unless previous char was '[', as in modifier :[#] */ 2732 if (!(ptr > line && ptr[-1] == '[')) 2733 comment = line_end; 2734 } 2735 ptr++; 2736 if (ch == '\n') 2737 break; 2738 if (!isspace((unsigned char)ch)) 2739 /* We are not interested in trailing whitespace */ 2740 line_end = ptr; 2741 } 2742 2743 /* Save next 'to be processed' location */ 2744 cf->P_ptr = ptr; 2745 2746 /* Check we have a non-comment, non-blank line */ 2747 if (line_end == line || comment == line) { 2748 if (ch == 0) 2749 /* At end of file */ 2750 return NULL; 2751 /* Parse another line */ 2752 continue; 2753 } 2754 2755 /* We now have a line of data */ 2756 *line_end = 0; 2757 2758 if (flags & PARSE_RAW) { 2759 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2760 *length = line_end - line; 2761 return line; 2762 } 2763 2764 if (flags & PARSE_SKIP) { 2765 /* Completely ignore non-directives */ 2766 if (line[0] != '.') 2767 continue; 2768 /* We could do more of the .else/.elif/.endif checks here */ 2769 } 2770 break; 2771 } 2772 2773 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2774 if (comment != NULL && line[0] != '\t') { 2775 line_end = comment; 2776 *line_end = 0; 2777 } 2778 2779 /* If we didn't see a '\\' then the in-situ data is fine */ 2780 if (escaped == NULL) { 2781 *length = line_end - line; 2782 return line; 2783 } 2784 2785 /* Remove escapes from '\n' and '#' */ 2786 tp = ptr = escaped; 2787 escaped = line; 2788 for (; ; *tp++ = ch) { 2789 ch = *ptr++; 2790 if (ch != '\\') { 2791 if (ch == 0) 2792 break; 2793 continue; 2794 } 2795 2796 ch = *ptr++; 2797 if (ch == 0) { 2798 /* Delete '\\' at end of buffer */ 2799 tp--; 2800 break; 2801 } 2802 2803 if (ch == '#' && line[0] != '\t') 2804 /* Delete '\\' from before '#' on non-command lines */ 2805 continue; 2806 2807 if (ch != '\n') { 2808 /* Leave '\\' in buffer for later */ 2809 *tp++ = '\\'; 2810 /* Make sure we don't delete an escaped ' ' from the line end */ 2811 escaped = tp + 1; 2812 continue; 2813 } 2814 2815 /* Escaped '\n' replace following whitespace with a single ' ' */ 2816 while (ptr[0] == ' ' || ptr[0] == '\t') 2817 ptr++; 2818 ch = ' '; 2819 } 2820 2821 /* Delete any trailing spaces - eg from empty continuations */ 2822 while (tp > escaped && isspace((unsigned char)tp[-1])) 2823 tp--; 2824 2825 *tp = 0; 2826 *length = tp - line; 2827 return line; 2828 } 2829 2830 /*- 2831 *--------------------------------------------------------------------- 2832 * ParseReadLine -- 2833 * Read an entire line from the input file. Called only by Parse_File. 2834 * 2835 * Results: 2836 * A line w/o its newline 2837 * 2838 * Side Effects: 2839 * Only those associated with reading a character 2840 *--------------------------------------------------------------------- 2841 */ 2842 static char * 2843 ParseReadLine(void) 2844 { 2845 char *line; /* Result */ 2846 int lineLength; /* Length of result */ 2847 int lineno; /* Saved line # */ 2848 int rval; 2849 2850 for (;;) { 2851 line = ParseGetLine(0, &lineLength); 2852 if (line == NULL) 2853 return NULL; 2854 2855 if (line[0] != '.') 2856 return line; 2857 2858 /* 2859 * The line might be a conditional. Ask the conditional module 2860 * about it and act accordingly 2861 */ 2862 switch (Cond_Eval(line)) { 2863 case COND_SKIP: 2864 /* Skip to next conditional that evaluates to COND_PARSE. */ 2865 do { 2866 line = ParseGetLine(PARSE_SKIP, &lineLength); 2867 } while (line && Cond_Eval(line) != COND_PARSE); 2868 if (line == NULL) 2869 break; 2870 continue; 2871 case COND_PARSE: 2872 continue; 2873 case COND_INVALID: /* Not a conditional line */ 2874 /* Check for .for loops */ 2875 rval = For_Eval(line); 2876 if (rval == 0) 2877 /* Not a .for line */ 2878 break; 2879 if (rval < 0) 2880 /* Syntax error - error printed, ignore line */ 2881 continue; 2882 /* Start of a .for loop */ 2883 lineno = curFile->lineno; 2884 /* Accumulate loop lines until matching .endfor */ 2885 do { 2886 line = ParseGetLine(PARSE_RAW, &lineLength); 2887 if (line == NULL) { 2888 Parse_Error(PARSE_FATAL, 2889 "Unexpected end of file in for loop."); 2890 break; 2891 } 2892 } while (For_Accum(line)); 2893 /* Stash each iteration as a new 'input file' */ 2894 For_Run(lineno); 2895 /* Read next line from for-loop buffer */ 2896 continue; 2897 } 2898 return (line); 2899 } 2900 } 2901 2902 /*- 2903 *----------------------------------------------------------------------- 2904 * ParseFinishLine -- 2905 * Handle the end of a dependency group. 2906 * 2907 * Results: 2908 * Nothing. 2909 * 2910 * Side Effects: 2911 * inLine set FALSE. 'targets' list destroyed. 2912 * 2913 *----------------------------------------------------------------------- 2914 */ 2915 static void 2916 ParseFinishLine(void) 2917 { 2918 if (inLine) { 2919 Lst_ForEach(targets, Suff_EndTransform, NULL); 2920 Lst_Destroy(targets, ParseHasCommands); 2921 targets = NULL; 2922 inLine = FALSE; 2923 } 2924 } 2925 2926 2927 /*- 2928 *--------------------------------------------------------------------- 2929 * Parse_File -- 2930 * Parse a file into its component parts, incorporating it into the 2931 * current dependency graph. This is the main function and controls 2932 * almost every other function in this module 2933 * 2934 * Input: 2935 * name the name of the file being read 2936 * fd Open file to makefile to parse 2937 * 2938 * Results: 2939 * None 2940 * 2941 * Side Effects: 2942 * closes fd. 2943 * Loads. Nodes are added to the list of all targets, nodes and links 2944 * are added to the dependency graph. etc. etc. etc. 2945 *--------------------------------------------------------------------- 2946 */ 2947 void 2948 Parse_File(const char *name, int fd) 2949 { 2950 char *cp; /* pointer into the line */ 2951 char *line; /* the line we're working on */ 2952 struct loadedfile *lf; 2953 2954 lf = loadfile(name, fd); 2955 2956 inLine = FALSE; 2957 fatals = 0; 2958 2959 if (name == NULL) { 2960 name = "(stdin)"; 2961 } 2962 2963 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2964 curFile->lf = lf; 2965 2966 do { 2967 for (; (line = ParseReadLine()) != NULL; ) { 2968 if (DEBUG(PARSE)) 2969 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2970 curFile->lineno, line); 2971 if (*line == '.') { 2972 /* 2973 * Lines that begin with the special character may be 2974 * include or undef directives. 2975 * On the other hand they can be suffix rules (.c.o: ...) 2976 * or just dependencies for filenames that start '.'. 2977 */ 2978 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 2979 continue; 2980 } 2981 if (strncmp(cp, "include", 7) == 0 || 2982 ((cp[0] == 'd' || cp[0] == 's' || cp[0] == '-') && 2983 strncmp(&cp[1], "include", 7) == 0)) { 2984 ParseDoInclude(cp); 2985 continue; 2986 } 2987 if (strncmp(cp, "undef", 5) == 0) { 2988 char *cp2; 2989 for (cp += 5; isspace((unsigned char) *cp); cp++) 2990 continue; 2991 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2992 (*cp2 != '\0'); cp2++) 2993 continue; 2994 *cp2 = '\0'; 2995 Var_Delete(cp, VAR_GLOBAL); 2996 continue; 2997 } else if (strncmp(cp, "export", 6) == 0) { 2998 for (cp += 6; isspace((unsigned char) *cp); cp++) 2999 continue; 3000 Var_Export(cp, 1); 3001 continue; 3002 } else if (strncmp(cp, "unexport", 8) == 0) { 3003 Var_UnExport(cp); 3004 continue; 3005 } else if (strncmp(cp, "info", 4) == 0 || 3006 strncmp(cp, "error", 5) == 0 || 3007 strncmp(cp, "warning", 7) == 0) { 3008 if (ParseMessage(cp)) 3009 continue; 3010 } 3011 } 3012 3013 if (*line == '\t') { 3014 /* 3015 * If a line starts with a tab, it can only hope to be 3016 * a creation command. 3017 */ 3018 cp = line + 1; 3019 shellCommand: 3020 for (; isspace ((unsigned char)*cp); cp++) { 3021 continue; 3022 } 3023 if (*cp) { 3024 if (!inLine) 3025 Parse_Error(PARSE_FATAL, 3026 "Unassociated shell command \"%s\"", 3027 cp); 3028 /* 3029 * So long as it's not a blank line and we're actually 3030 * in a dependency spec, add the command to the list of 3031 * commands of all targets in the dependency spec 3032 */ 3033 if (targets) { 3034 cp = bmake_strdup(cp); 3035 Lst_ForEach(targets, ParseAddCmd, cp); 3036 #ifdef CLEANUP 3037 Lst_AtEnd(targCmds, cp); 3038 #endif 3039 } 3040 } 3041 continue; 3042 } 3043 3044 #ifdef SYSVINCLUDE 3045 if (((strncmp(line, "include", 7) == 0 && 3046 isspace((unsigned char) line[7])) || 3047 ((line[0] == 's' || line[0] == '-') && 3048 strncmp(&line[1], "include", 7) == 0 && 3049 isspace((unsigned char) line[8]))) && 3050 strchr(line, ':') == NULL) { 3051 /* 3052 * It's an S3/S5-style "include". 3053 */ 3054 ParseTraditionalInclude(line); 3055 continue; 3056 } 3057 #endif 3058 #ifdef GMAKEEXPORT 3059 if (strncmp(line, "export", 6) == 0 && 3060 isspace((unsigned char) line[6]) && 3061 strchr(line, ':') == NULL) { 3062 /* 3063 * It's a Gmake "export". 3064 */ 3065 ParseGmakeExport(line); 3066 continue; 3067 } 3068 #endif 3069 if (Parse_IsVar(line)) { 3070 ParseFinishLine(); 3071 Parse_DoVar(line, VAR_GLOBAL); 3072 continue; 3073 } 3074 3075 #ifndef POSIX 3076 /* 3077 * To make life easier on novices, if the line is indented we 3078 * first make sure the line has a dependency operator in it. 3079 * If it doesn't have an operator and we're in a dependency 3080 * line's script, we assume it's actually a shell command 3081 * and add it to the current list of targets. 3082 */ 3083 cp = line; 3084 if (isspace((unsigned char) line[0])) { 3085 while ((*cp != '\0') && isspace((unsigned char) *cp)) 3086 cp++; 3087 while (*cp && (ParseIsEscaped(line, cp) || 3088 (*cp != ':') && (*cp != '!'))) { 3089 cp++; 3090 } 3091 if (*cp == '\0') { 3092 if (inLine) { 3093 Parse_Error(PARSE_WARNING, 3094 "Shell command needs a leading tab"); 3095 goto shellCommand; 3096 } 3097 } 3098 } 3099 #endif 3100 ParseFinishLine(); 3101 3102 /* 3103 * For some reason - probably to make the parser impossible - 3104 * a ';' can be used to separate commands from dependencies. 3105 * Attempt to avoid ';' inside substitution patterns. 3106 */ 3107 { 3108 int level = 0; 3109 3110 for (cp = line; *cp != 0; cp++) { 3111 if (*cp == '\\' && cp[1] != 0) { 3112 cp++; 3113 continue; 3114 } 3115 if (*cp == '$' && 3116 (cp[1] == '(' || cp[1] == '{')) { 3117 level++; 3118 continue; 3119 } 3120 if (level > 0) { 3121 if (*cp == ')' || *cp == '}') { 3122 level--; 3123 continue; 3124 } 3125 } else if (*cp == ';') { 3126 break; 3127 } 3128 } 3129 } 3130 if (*cp != 0) 3131 /* Terminate the dependency list at the ';' */ 3132 *cp++ = 0; 3133 else 3134 cp = NULL; 3135 3136 /* 3137 * We now know it's a dependency line so it needs to have all 3138 * variables expanded before being parsed. Tell the variable 3139 * module to complain if some variable is undefined... 3140 */ 3141 line = Var_Subst(NULL, line, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES); 3142 3143 /* 3144 * Need a non-circular list for the target nodes 3145 */ 3146 if (targets) 3147 Lst_Destroy(targets, NULL); 3148 3149 targets = Lst_Init(FALSE); 3150 inLine = TRUE; 3151 3152 ParseDoDependency(line); 3153 free(line); 3154 3155 /* If there were commands after a ';', add them now */ 3156 if (cp != NULL) { 3157 goto shellCommand; 3158 } 3159 } 3160 /* 3161 * Reached EOF, but it may be just EOF of an include file... 3162 */ 3163 } while (ParseEOF() == CONTINUE); 3164 3165 if (fatals) { 3166 (void)fflush(stdout); 3167 (void)fprintf(stderr, 3168 "%s: Fatal errors encountered -- cannot continue", 3169 progname); 3170 PrintOnError(NULL, NULL); 3171 exit(1); 3172 } 3173 } 3174 3175 /*- 3176 *--------------------------------------------------------------------- 3177 * Parse_Init -- 3178 * initialize the parsing module 3179 * 3180 * Results: 3181 * none 3182 * 3183 * Side Effects: 3184 * the parseIncPath list is initialized... 3185 *--------------------------------------------------------------------- 3186 */ 3187 void 3188 Parse_Init(void) 3189 { 3190 mainNode = NULL; 3191 parseIncPath = Lst_Init(FALSE); 3192 sysIncPath = Lst_Init(FALSE); 3193 defIncPath = Lst_Init(FALSE); 3194 includes = Lst_Init(FALSE); 3195 #ifdef CLEANUP 3196 targCmds = Lst_Init(FALSE); 3197 #endif 3198 } 3199 3200 void 3201 Parse_End(void) 3202 { 3203 #ifdef CLEANUP 3204 Lst_Destroy(targCmds, (FreeProc *)free); 3205 if (targets) 3206 Lst_Destroy(targets, NULL); 3207 Lst_Destroy(defIncPath, Dir_Destroy); 3208 Lst_Destroy(sysIncPath, Dir_Destroy); 3209 Lst_Destroy(parseIncPath, Dir_Destroy); 3210 Lst_Destroy(includes, NULL); /* Should be empty now */ 3211 #endif 3212 } 3213 3214 3215 /*- 3216 *----------------------------------------------------------------------- 3217 * Parse_MainName -- 3218 * Return a Lst of the main target to create for main()'s sake. If 3219 * no such target exists, we Punt with an obnoxious error message. 3220 * 3221 * Results: 3222 * A Lst of the single node to create. 3223 * 3224 * Side Effects: 3225 * None. 3226 * 3227 *----------------------------------------------------------------------- 3228 */ 3229 Lst 3230 Parse_MainName(void) 3231 { 3232 Lst mainList; /* result list */ 3233 3234 mainList = Lst_Init(FALSE); 3235 3236 if (mainNode == NULL) { 3237 Punt("no target to make."); 3238 /*NOTREACHED*/ 3239 } else if (mainNode->type & OP_DOUBLEDEP) { 3240 (void)Lst_AtEnd(mainList, mainNode); 3241 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3242 } 3243 else 3244 (void)Lst_AtEnd(mainList, mainNode); 3245 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3246 return (mainList); 3247 } 3248 3249 /*- 3250 *----------------------------------------------------------------------- 3251 * ParseMark -- 3252 * Add the filename and lineno to the GNode so that we remember 3253 * where it was first defined. 3254 * 3255 * Side Effects: 3256 * None. 3257 * 3258 *----------------------------------------------------------------------- 3259 */ 3260 static void 3261 ParseMark(GNode *gn) 3262 { 3263 gn->fname = curFile->fname; 3264 gn->lineno = curFile->lineno; 3265 } 3266