1 /* $NetBSD: parse.c,v 1.177 2011/03/03 14:53:02 nakayama 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 1.177 2011/03/03 14:53:02 nakayama 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 1.177 2011/03/03 14:53:02 nakayama 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 <fcntl.h> 133 #include <stdarg.h> 134 #include <stdio.h> 135 136 #ifndef MAP_FILE 137 #define MAP_FILE 0 138 #endif 139 #ifndef MAP_COPY 140 #define MAP_COPY MAP_PRIVATE 141 #endif 142 143 #include "make.h" 144 #include "hash.h" 145 #include "dir.h" 146 #include "job.h" 147 #include "buf.h" 148 #include "pathnames.h" 149 150 //////////////////////////////////////////////////////////// 151 // types and constants 152 153 /* 154 * Structure for a file being read ("included file") 155 */ 156 typedef struct IFile { 157 const char *fname; /* name of file */ 158 int lineno; /* current line number in file */ 159 int first_lineno; /* line number of start of text */ 160 int cond_depth; /* 'if' nesting when file opened */ 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 Suffixes, /* .SUFFIXES */ 214 Wait, /* .WAIT */ 215 Attribute /* Generic attribute */ 216 } ParseSpecial; 217 218 /* 219 * Other tokens 220 */ 221 #define LPAREN '(' 222 #define RPAREN ')' 223 224 225 //////////////////////////////////////////////////////////// 226 // result data 227 228 /* 229 * The main target to create. This is the first target on the first 230 * dependency line in the first makefile. 231 */ 232 static GNode *mainNode; 233 234 //////////////////////////////////////////////////////////// 235 // eval state 236 237 /* targets we're working on */ 238 static Lst targets; 239 240 #ifdef CLEANUP 241 /* command lines for targets */ 242 static Lst targCmds; 243 #endif 244 245 /* 246 * specType contains the SPECial TYPE of the current target. It is 247 * Not if the target is unspecial. If it *is* special, however, the children 248 * are linked as children of the parent but not vice versa. This variable is 249 * set in ParseDoDependency 250 */ 251 static ParseSpecial specType; 252 253 /* 254 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER 255 * seen, then set to each successive source on the line. 256 */ 257 static GNode *predecessor; 258 259 //////////////////////////////////////////////////////////// 260 // parser state 261 262 /* true if currently in a dependency line or its commands */ 263 static Boolean inLine; 264 265 /* number of fatal errors */ 266 static int fatals = 0; 267 268 /* 269 * Variables for doing includes 270 */ 271 272 /* current file being read */ 273 static IFile *curFile; 274 275 /* stack of IFiles generated by .includes */ 276 static Lst includes; 277 278 /* include paths (lists of directories) */ 279 Lst parseIncPath; /* dirs for "..." includes */ 280 Lst sysIncPath; /* dirs for <...> includes */ 281 Lst defIncPath; /* default for sysIncPath */ 282 283 //////////////////////////////////////////////////////////// 284 // parser tables 285 286 /* 287 * The parseKeywords table is searched using binary search when deciding 288 * if a target or source is special. The 'spec' field is the ParseSpecial 289 * type of the keyword ("Not" if the keyword isn't special as a target) while 290 * the 'op' field is the operator to apply to the list of targets if the 291 * keyword is used as a source ("0" if the keyword isn't special as a source) 292 */ 293 static const struct { 294 const char *name; /* Name of keyword */ 295 ParseSpecial spec; /* Type when used as a target */ 296 int op; /* Operator when used as a source */ 297 } parseKeywords[] = { 298 { ".BEGIN", Begin, 0 }, 299 { ".DEFAULT", Default, 0 }, 300 { ".END", End, 0 }, 301 { ".ERROR", dotError, 0 }, 302 { ".EXEC", Attribute, OP_EXEC }, 303 { ".IGNORE", Ignore, OP_IGNORE }, 304 { ".INCLUDES", Includes, 0 }, 305 { ".INTERRUPT", Interrupt, 0 }, 306 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 307 { ".JOIN", Attribute, OP_JOIN }, 308 { ".LIBS", Libs, 0 }, 309 { ".MADE", Attribute, OP_MADE }, 310 { ".MAIN", Main, 0 }, 311 { ".MAKE", Attribute, OP_MAKE }, 312 { ".MAKEFLAGS", MFlags, 0 }, 313 { ".META", Meta, OP_META }, 314 { ".MFLAGS", MFlags, 0 }, 315 { ".NOMETA", NoMeta, OP_NOMETA }, 316 { ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP }, 317 { ".NOPATH", NoPath, OP_NOPATH }, 318 { ".NOTMAIN", Attribute, OP_NOTMAIN }, 319 { ".NOTPARALLEL", NotParallel, 0 }, 320 { ".NO_PARALLEL", NotParallel, 0 }, 321 { ".NULL", Null, 0 }, 322 { ".OBJDIR", ExObjdir, 0 }, 323 { ".OPTIONAL", Attribute, OP_OPTIONAL }, 324 { ".ORDER", Order, 0 }, 325 { ".PARALLEL", Parallel, 0 }, 326 { ".PATH", ExPath, 0 }, 327 { ".PHONY", Phony, OP_PHONY }, 328 #ifdef POSIX 329 { ".POSIX", Posix, 0 }, 330 #endif 331 { ".PRECIOUS", Precious, OP_PRECIOUS }, 332 { ".RECURSIVE", Attribute, OP_MAKE }, 333 { ".SHELL", ExShell, 0 }, 334 { ".SILENT", Silent, OP_SILENT }, 335 { ".SINGLESHELL", SingleShell, 0 }, 336 { ".SUFFIXES", Suffixes, 0 }, 337 { ".USE", Attribute, OP_USE }, 338 { ".USEBEFORE", Attribute, OP_USEBEFORE }, 339 { ".WAIT", Wait, 0 }, 340 }; 341 342 //////////////////////////////////////////////////////////// 343 // local functions 344 345 static int ParseIsEscaped(const char *, const char *); 346 static void ParseErrorInternal(const char *, size_t, int, const char *, ...) 347 __attribute__((__format__(__printf__, 4, 5))); 348 static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list) 349 __attribute__((__format__(__printf__, 5, 0))); 350 static int ParseFindKeyword(const char *); 351 static int ParseLinkSrc(void *, void *); 352 static int ParseDoOp(void *, void *); 353 static void ParseDoSrc(int, const char *); 354 static int ParseFindMain(void *, void *); 355 static int ParseAddDir(void *, void *); 356 static int ParseClearPath(void *, void *); 357 static void ParseDoDependency(char *); 358 static int ParseAddCmd(void *, void *); 359 static void ParseHasCommands(void *); 360 static void ParseDoInclude(char *); 361 static void ParseSetParseFile(const char *); 362 #ifdef SYSVINCLUDE 363 static void ParseTraditionalInclude(char *); 364 #endif 365 static int ParseEOF(void); 366 static char *ParseReadLine(void); 367 static void ParseFinishLine(void); 368 static void ParseMark(GNode *); 369 370 //////////////////////////////////////////////////////////// 371 // file loader 372 373 struct loadedfile { 374 const char *path; /* name, for error reports */ 375 char *buf; /* contents buffer */ 376 size_t len; /* length of contents */ 377 size_t maplen; /* length of mmap area, or 0 */ 378 Boolean used; /* XXX: have we used the data yet */ 379 }; 380 381 /* 382 * Constructor/destructor for loadedfile 383 */ 384 static struct loadedfile * 385 loadedfile_create(const char *path) 386 { 387 struct loadedfile *lf; 388 389 lf = bmake_malloc(sizeof(*lf)); 390 lf->path = (path == NULL ? "(stdin)" : path); 391 lf->buf = NULL; 392 lf->len = 0; 393 lf->maplen = 0; 394 lf->used = FALSE; 395 return lf; 396 } 397 398 static void 399 loadedfile_destroy(struct loadedfile *lf) 400 { 401 if (lf->buf != NULL) { 402 if (lf->maplen > 0) { 403 munmap(lf->buf, lf->maplen); 404 } else { 405 free(lf->buf); 406 } 407 } 408 free(lf); 409 } 410 411 /* 412 * nextbuf() operation for loadedfile, as needed by the weird and twisted 413 * logic below. Once that's cleaned up, we can get rid of lf->used... 414 */ 415 static char * 416 loadedfile_nextbuf(void *x, size_t *len) 417 { 418 struct loadedfile *lf = x; 419 420 if (lf->used) { 421 return NULL; 422 } 423 lf->used = TRUE; 424 *len = lf->len; 425 return lf->buf; 426 } 427 428 /* 429 * Try to get the size of a file. 430 */ 431 static ReturnStatus 432 load_getsize(int fd, size_t *ret) 433 { 434 struct stat st; 435 436 if (fstat(fd, &st) < 0) { 437 return FAILURE; 438 } 439 440 if (!S_ISREG(st.st_mode)) { 441 return FAILURE; 442 } 443 444 /* 445 * st_size is an off_t, which is 64 bits signed; *ret is 446 * size_t, which might be 32 bits unsigned or 64 bits 447 * unsigned. Rather than being elaborate, just punt on 448 * files that are more than 2^31 bytes. We should never 449 * see a makefile that size in practice... 450 * 451 * While we're at it reject negative sizes too, just in case. 452 */ 453 if (st.st_size < 0 || st.st_size > 0x7fffffff) { 454 return FAILURE; 455 } 456 457 *ret = (size_t) st.st_size; 458 return SUCCESS; 459 } 460 461 /* 462 * Read in a file. 463 * 464 * Until the path search logic can be moved under here instead of 465 * being in the caller in another source file, we need to have the fd 466 * passed in already open. Bleh. 467 * 468 * If the path is NULL use stdin and (to insure against fd leaks) 469 * assert that the caller passed in -1. 470 */ 471 static struct loadedfile * 472 loadfile(const char *path, int fd) 473 { 474 struct loadedfile *lf; 475 long pagesize; 476 ssize_t result; 477 size_t bufpos; 478 479 lf = loadedfile_create(path); 480 481 if (path == NULL) { 482 assert(fd == -1); 483 fd = STDIN_FILENO; 484 } else { 485 #if 0 /* notyet */ 486 fd = open(path, O_RDONLY); 487 if (fd < 0) { 488 ... 489 Error("%s: %s", path, strerror(errno)); 490 exit(1); 491 } 492 #endif 493 } 494 495 if (load_getsize(fd, &lf->len) == SUCCESS) { 496 /* found a size, try mmap */ 497 pagesize = sysconf(_SC_PAGESIZE); 498 if (pagesize <= 0) { 499 pagesize = 0x1000; 500 } 501 /* round size up to a page */ 502 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 503 504 /* 505 * XXX hack for dealing with empty files; remove when 506 * we're no longer limited by interfacing to the old 507 * logic elsewhere in this file. 508 */ 509 if (lf->maplen == 0) { 510 lf->maplen = pagesize; 511 } 512 513 /* 514 * FUTURE: remove PROT_WRITE when the parser no longer 515 * needs to scribble on the input. 516 */ 517 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 518 MAP_FILE|MAP_COPY, fd, 0); 519 if (lf->buf != MAP_FAILED) { 520 /* succeeded */ 521 goto done; 522 } 523 } 524 525 /* cannot mmap; load the traditional way */ 526 527 lf->maplen = 0; 528 lf->len = 1024; 529 lf->buf = bmake_malloc(lf->len); 530 531 bufpos = 0; 532 while (1) { 533 assert(bufpos <= lf->len); 534 if (bufpos == lf->len) { 535 lf->len *= 2; 536 lf->buf = bmake_realloc(lf->buf, lf->len); 537 } 538 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 539 if (result < 0) { 540 Error("%s: read error: %s", path, strerror(errno)); 541 exit(1); 542 } 543 if (result == 0) { 544 break; 545 } 546 bufpos += result; 547 } 548 assert(bufpos <= lf->len); 549 lf->len = bufpos; 550 551 /* truncate malloc region to actual length (maybe not useful) */ 552 if (lf->len > 0) { 553 lf->buf = bmake_realloc(lf->buf, lf->len); 554 } 555 556 done: 557 if (path != NULL) { 558 close(fd); 559 } 560 return lf; 561 } 562 563 //////////////////////////////////////////////////////////// 564 // old code 565 566 /*- 567 *---------------------------------------------------------------------- 568 * ParseIsEscaped -- 569 * Check if the current character is escaped on the current line 570 * 571 * Results: 572 * 0 if the character is not backslash escaped, 1 otherwise 573 * 574 * Side Effects: 575 * None 576 *---------------------------------------------------------------------- 577 */ 578 static int 579 ParseIsEscaped(const char *line, const char *c) 580 { 581 int active = 0; 582 for (;;) { 583 if (line == c) 584 return active; 585 if (*--c != '\\') 586 return active; 587 active = !active; 588 } 589 } 590 591 /*- 592 *---------------------------------------------------------------------- 593 * ParseFindKeyword -- 594 * Look in the table of keywords for one matching the given string. 595 * 596 * Input: 597 * str String to find 598 * 599 * Results: 600 * The index of the keyword, or -1 if it isn't there. 601 * 602 * Side Effects: 603 * None 604 *---------------------------------------------------------------------- 605 */ 606 static int 607 ParseFindKeyword(const char *str) 608 { 609 int start, end, cur; 610 int diff; 611 612 start = 0; 613 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 614 615 do { 616 cur = start + ((end - start) / 2); 617 diff = strcmp(str, parseKeywords[cur].name); 618 619 if (diff == 0) { 620 return (cur); 621 } else if (diff < 0) { 622 end = cur - 1; 623 } else { 624 start = cur + 1; 625 } 626 } while (start <= end); 627 return (-1); 628 } 629 630 /*- 631 * ParseVErrorInternal -- 632 * Error message abort function for parsing. Prints out the context 633 * of the error (line number and file) as well as the message with 634 * two optional arguments. 635 * 636 * Results: 637 * None 638 * 639 * Side Effects: 640 * "fatals" is incremented if the level is PARSE_FATAL. 641 */ 642 /* VARARGS */ 643 static void 644 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 645 const char *fmt, va_list ap) 646 { 647 static Boolean fatal_warning_error_printed = FALSE; 648 649 (void)fprintf(f, "%s: ", progname); 650 651 if (cfname != NULL) { 652 (void)fprintf(f, "\""); 653 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 654 char *cp; 655 const char *dir; 656 657 /* 658 * Nothing is more annoying than not knowing 659 * which Makefile is the culprit. 660 */ 661 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 662 if (dir == NULL || *dir == '\0' || 663 (*dir == '.' && dir[1] == '\0')) 664 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 665 if (dir == NULL) 666 dir = "."; 667 668 (void)fprintf(f, "%s/%s", dir, cfname); 669 } else 670 (void)fprintf(f, "%s", cfname); 671 672 (void)fprintf(f, "\" line %d: ", (int)clineno); 673 } 674 if (type == PARSE_WARNING) 675 (void)fprintf(f, "warning: "); 676 (void)vfprintf(f, fmt, ap); 677 (void)fprintf(f, "\n"); 678 (void)fflush(f); 679 if (type == PARSE_FATAL || parseWarnFatal) 680 fatals += 1; 681 if (parseWarnFatal && !fatal_warning_error_printed) { 682 Error("parsing warnings being treated as errors"); 683 fatal_warning_error_printed = TRUE; 684 } 685 } 686 687 /*- 688 * ParseErrorInternal -- 689 * Error function 690 * 691 * Results: 692 * None 693 * 694 * Side Effects: 695 * None 696 */ 697 /* VARARGS */ 698 static void 699 ParseErrorInternal(const char *cfname, size_t clineno, int type, 700 const char *fmt, ...) 701 { 702 va_list ap; 703 704 va_start(ap, fmt); 705 (void)fflush(stdout); 706 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 707 va_end(ap); 708 709 if (debug_file != stderr && debug_file != stdout) { 710 va_start(ap, fmt); 711 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 712 va_end(ap); 713 } 714 } 715 716 /*- 717 * Parse_Error -- 718 * External interface to ParseErrorInternal; uses the default filename 719 * Line number. 720 * 721 * Results: 722 * None 723 * 724 * Side Effects: 725 * None 726 */ 727 /* VARARGS */ 728 void 729 Parse_Error(int type, const char *fmt, ...) 730 { 731 va_list ap; 732 const char *fname; 733 size_t lineno; 734 735 if (curFile == NULL) { 736 fname = NULL; 737 lineno = 0; 738 } else { 739 fname = curFile->fname; 740 lineno = curFile->lineno; 741 } 742 743 va_start(ap, fmt); 744 (void)fflush(stdout); 745 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 746 va_end(ap); 747 748 if (debug_file != stderr && debug_file != stdout) { 749 va_start(ap, fmt); 750 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 751 va_end(ap); 752 } 753 } 754 755 756 /* 757 * ParseMessage 758 * Parse a .info .warning or .error directive 759 * 760 * The input is the line minus the ".". We substitute 761 * variables, print the message and exit(1) (for .error) or just print 762 * a warning if the directive is malformed. 763 */ 764 static Boolean 765 ParseMessage(char *line) 766 { 767 int mtype; 768 769 switch(*line) { 770 case 'i': 771 mtype = 0; 772 break; 773 case 'w': 774 mtype = PARSE_WARNING; 775 break; 776 case 'e': 777 mtype = PARSE_FATAL; 778 break; 779 default: 780 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 781 return FALSE; 782 } 783 784 while (isalpha((u_char)*line)) 785 line++; 786 if (!isspace((u_char)*line)) 787 return FALSE; /* not for us */ 788 while (isspace((u_char)*line)) 789 line++; 790 791 line = Var_Subst(NULL, line, VAR_CMD, 0); 792 Parse_Error(mtype, "%s", line); 793 free(line); 794 795 if (mtype == PARSE_FATAL) { 796 /* Terminate immediately. */ 797 exit(1); 798 } 799 return TRUE; 800 } 801 802 /*- 803 *--------------------------------------------------------------------- 804 * ParseLinkSrc -- 805 * Link the parent node to its new child. Used in a Lst_ForEach by 806 * ParseDoDependency. If the specType isn't 'Not', the parent 807 * isn't linked as a parent of the child. 808 * 809 * Input: 810 * pgnp The parent node 811 * cgpn The child node 812 * 813 * Results: 814 * Always = 0 815 * 816 * Side Effects: 817 * New elements are added to the parents list of cgn and the 818 * children list of cgn. the unmade field of pgn is updated 819 * to reflect the additional child. 820 *--------------------------------------------------------------------- 821 */ 822 static int 823 ParseLinkSrc(void *pgnp, void *cgnp) 824 { 825 GNode *pgn = (GNode *)pgnp; 826 GNode *cgn = (GNode *)cgnp; 827 828 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 829 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 830 (void)Lst_AtEnd(pgn->children, cgn); 831 if (specType == Not) 832 (void)Lst_AtEnd(cgn->parents, pgn); 833 pgn->unmade += 1; 834 if (DEBUG(PARSE)) { 835 fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name); 836 Targ_PrintNode(pgn, 0); 837 Targ_PrintNode(cgn, 0); 838 } 839 return (0); 840 } 841 842 /*- 843 *--------------------------------------------------------------------- 844 * ParseDoOp -- 845 * Apply the parsed operator to the given target node. Used in a 846 * Lst_ForEach call by ParseDoDependency once all targets have 847 * been found and their operator parsed. If the previous and new 848 * operators are incompatible, a major error is taken. 849 * 850 * Input: 851 * gnp The node to which the operator is to be applied 852 * opp The operator to apply 853 * 854 * Results: 855 * Always 0 856 * 857 * Side Effects: 858 * The type field of the node is altered to reflect any new bits in 859 * the op. 860 *--------------------------------------------------------------------- 861 */ 862 static int 863 ParseDoOp(void *gnp, void *opp) 864 { 865 GNode *gn = (GNode *)gnp; 866 int op = *(int *)opp; 867 /* 868 * If the dependency mask of the operator and the node don't match and 869 * the node has actually had an operator applied to it before, and 870 * the operator actually has some dependency information in it, complain. 871 */ 872 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 873 !OP_NOP(gn->type) && !OP_NOP(op)) 874 { 875 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 876 return (1); 877 } 878 879 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 880 /* 881 * If the node was the object of a :: operator, we need to create a 882 * new instance of it for the children and commands on this dependency 883 * line. The new instance is placed on the 'cohorts' list of the 884 * initial one (note the initial one is not on its own cohorts list) 885 * and the new instance is linked to all parents of the initial 886 * instance. 887 */ 888 GNode *cohort; 889 890 /* 891 * Propagate copied bits to the initial node. They'll be propagated 892 * back to the rest of the cohorts later. 893 */ 894 gn->type |= op & ~OP_OPMASK; 895 896 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 897 /* 898 * Make the cohort invisible as well to avoid duplicating it into 899 * other variables. True, parents of this target won't tend to do 900 * anything with their local variables, but better safe than 901 * sorry. (I think this is pointless now, since the relevant list 902 * traversals will no longer see this node anyway. -mycroft) 903 */ 904 cohort->type = op | OP_INVISIBLE; 905 (void)Lst_AtEnd(gn->cohorts, cohort); 906 cohort->centurion = gn; 907 gn->unmade_cohorts += 1; 908 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 909 gn->unmade_cohorts); 910 } else { 911 /* 912 * We don't want to nuke any previous flags (whatever they were) so we 913 * just OR the new operator into the old 914 */ 915 gn->type |= op; 916 } 917 918 return (0); 919 } 920 921 /*- 922 *--------------------------------------------------------------------- 923 * ParseDoSrc -- 924 * Given the name of a source, figure out if it is an attribute 925 * and apply it to the targets if it is. Else decide if there is 926 * some attribute which should be applied *to* the source because 927 * of some special target and apply it if so. Otherwise, make the 928 * source be a child of the targets in the list 'targets' 929 * 930 * Input: 931 * tOp operator (if any) from special targets 932 * src name of the source to handle 933 * 934 * Results: 935 * None 936 * 937 * Side Effects: 938 * Operator bits may be added to the list of targets or to the source. 939 * The targets may have a new source added to their lists of children. 940 *--------------------------------------------------------------------- 941 */ 942 static void 943 ParseDoSrc(int tOp, const char *src) 944 { 945 GNode *gn = NULL; 946 static int wait_number = 0; 947 char wait_src[16]; 948 949 if (*src == '.' && isupper ((unsigned char)src[1])) { 950 int keywd = ParseFindKeyword(src); 951 if (keywd != -1) { 952 int op = parseKeywords[keywd].op; 953 if (op != 0) { 954 Lst_ForEach(targets, ParseDoOp, &op); 955 return; 956 } 957 if (parseKeywords[keywd].spec == Wait) { 958 /* 959 * We add a .WAIT node in the dependency list. 960 * After any dynamic dependencies (and filename globbing) 961 * have happened, it is given a dependency on the each 962 * previous child back to and previous .WAIT node. 963 * The next child won't be scheduled until the .WAIT node 964 * is built. 965 * We give each .WAIT node a unique name (mainly for diag). 966 */ 967 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 968 gn = Targ_FindNode(wait_src, TARG_NOHASH); 969 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 970 Lst_ForEach(targets, ParseLinkSrc, gn); 971 return; 972 } 973 } 974 } 975 976 switch (specType) { 977 case Main: 978 /* 979 * If we have noted the existence of a .MAIN, it means we need 980 * to add the sources of said target to the list of things 981 * to create. The string 'src' is likely to be free, so we 982 * must make a new copy of it. Note that this will only be 983 * invoked if the user didn't specify a target on the command 984 * line. This is to allow #ifmake's to succeed, or something... 985 */ 986 (void)Lst_AtEnd(create, bmake_strdup(src)); 987 /* 988 * Add the name to the .TARGETS variable as well, so the user can 989 * employ that, if desired. 990 */ 991 Var_Append(".TARGETS", src, VAR_GLOBAL); 992 return; 993 994 case Order: 995 /* 996 * Create proper predecessor/successor links between the previous 997 * source and the current one. 998 */ 999 gn = Targ_FindNode(src, TARG_CREATE); 1000 if (predecessor != NULL) { 1001 (void)Lst_AtEnd(predecessor->order_succ, gn); 1002 (void)Lst_AtEnd(gn->order_pred, predecessor); 1003 if (DEBUG(PARSE)) { 1004 fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n", 1005 predecessor->name, gn->name); 1006 Targ_PrintNode(predecessor, 0); 1007 Targ_PrintNode(gn, 0); 1008 } 1009 } 1010 /* 1011 * The current source now becomes the predecessor for the next one. 1012 */ 1013 predecessor = gn; 1014 break; 1015 1016 default: 1017 /* 1018 * If the source is not an attribute, we need to find/create 1019 * a node for it. After that we can apply any operator to it 1020 * from a special target or link it to its parents, as 1021 * appropriate. 1022 * 1023 * In the case of a source that was the object of a :: operator, 1024 * the attribute is applied to all of its instances (as kept in 1025 * the 'cohorts' list of the node) or all the cohorts are linked 1026 * to all the targets. 1027 */ 1028 1029 /* Find/create the 'src' node and attach to all targets */ 1030 gn = Targ_FindNode(src, TARG_CREATE); 1031 if (tOp) { 1032 gn->type |= tOp; 1033 } else { 1034 Lst_ForEach(targets, ParseLinkSrc, gn); 1035 } 1036 break; 1037 } 1038 } 1039 1040 /*- 1041 *----------------------------------------------------------------------- 1042 * ParseFindMain -- 1043 * Find a real target in the list and set it to be the main one. 1044 * Called by ParseDoDependency when a main target hasn't been found 1045 * yet. 1046 * 1047 * Input: 1048 * gnp Node to examine 1049 * 1050 * Results: 1051 * 0 if main not found yet, 1 if it is. 1052 * 1053 * Side Effects: 1054 * mainNode is changed and Targ_SetMain is called. 1055 * 1056 *----------------------------------------------------------------------- 1057 */ 1058 static int 1059 ParseFindMain(void *gnp, void *dummy) 1060 { 1061 GNode *gn = (GNode *)gnp; 1062 if ((gn->type & OP_NOTARGET) == 0) { 1063 mainNode = gn; 1064 Targ_SetMain(gn); 1065 return (dummy ? 1 : 1); 1066 } else { 1067 return (dummy ? 0 : 0); 1068 } 1069 } 1070 1071 /*- 1072 *----------------------------------------------------------------------- 1073 * ParseAddDir -- 1074 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1075 * 1076 * Results: 1077 * === 0 1078 * 1079 * Side Effects: 1080 * See Dir_AddDir. 1081 * 1082 *----------------------------------------------------------------------- 1083 */ 1084 static int 1085 ParseAddDir(void *path, void *name) 1086 { 1087 (void)Dir_AddDir((Lst) path, (char *)name); 1088 return(0); 1089 } 1090 1091 /*- 1092 *----------------------------------------------------------------------- 1093 * ParseClearPath -- 1094 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1095 * 1096 * Results: 1097 * === 0 1098 * 1099 * Side Effects: 1100 * See Dir_ClearPath 1101 * 1102 *----------------------------------------------------------------------- 1103 */ 1104 static int 1105 ParseClearPath(void *path, void *dummy) 1106 { 1107 Dir_ClearPath((Lst) path); 1108 return(dummy ? 0 : 0); 1109 } 1110 1111 /*- 1112 *--------------------------------------------------------------------- 1113 * ParseDoDependency -- 1114 * Parse the dependency line in line. 1115 * 1116 * Input: 1117 * line the line to parse 1118 * 1119 * Results: 1120 * None 1121 * 1122 * Side Effects: 1123 * The nodes of the sources are linked as children to the nodes of the 1124 * targets. Some nodes may be created. 1125 * 1126 * We parse a dependency line by first extracting words from the line and 1127 * finding nodes in the list of all targets with that name. This is done 1128 * until a character is encountered which is an operator character. Currently 1129 * these are only ! and :. At this point the operator is parsed and the 1130 * pointer into the line advanced until the first source is encountered. 1131 * The parsed operator is applied to each node in the 'targets' list, 1132 * which is where the nodes found for the targets are kept, by means of 1133 * the ParseDoOp function. 1134 * The sources are read in much the same way as the targets were except 1135 * that now they are expanded using the wildcarding scheme of the C-Shell 1136 * and all instances of the resulting words in the list of all targets 1137 * are found. Each of the resulting nodes is then linked to each of the 1138 * targets as one of its children. 1139 * Certain targets are handled specially. These are the ones detailed 1140 * by the specType variable. 1141 * The storing of transformation rules is also taken care of here. 1142 * A target is recognized as a transformation rule by calling 1143 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1144 * from the suffix module via Suff_AddTransform rather than the standard 1145 * Targ_FindNode in the target module. 1146 *--------------------------------------------------------------------- 1147 */ 1148 static void 1149 ParseDoDependency(char *line) 1150 { 1151 char *cp; /* our current position */ 1152 GNode *gn = NULL; /* a general purpose temporary node */ 1153 int op; /* the operator on the line */ 1154 char savec; /* a place to save a character */ 1155 Lst paths; /* List of search paths to alter when parsing 1156 * a list of .PATH targets */ 1157 int tOp; /* operator from special target */ 1158 Lst sources; /* list of archive source names after 1159 * expansion */ 1160 Lst curTargs; /* list of target names to be found and added 1161 * to the targets list */ 1162 char *lstart = line; 1163 1164 if (DEBUG(PARSE)) 1165 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1166 tOp = 0; 1167 1168 specType = Not; 1169 paths = (Lst)NULL; 1170 1171 curTargs = Lst_Init(FALSE); 1172 1173 do { 1174 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1175 !(isspace((unsigned char)*cp) || 1176 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1177 cp++) { 1178 if (*cp == '$') { 1179 /* 1180 * Must be a dynamic source (would have been expanded 1181 * otherwise), so call the Var module to parse the puppy 1182 * so we can safely advance beyond it...There should be 1183 * no errors in this, as they would have been discovered 1184 * in the initial Var_Subst and we wouldn't be here. 1185 */ 1186 int length; 1187 void *freeIt; 1188 char *result; 1189 1190 result = Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt); 1191 if (freeIt) 1192 free(freeIt); 1193 cp += length-1; 1194 } 1195 } 1196 1197 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1198 /* 1199 * Archives must be handled specially to make sure the OP_ARCHV 1200 * flag is set in their 'type' field, for one thing, and because 1201 * things like "archive(file1.o file2.o file3.o)" are permissible. 1202 * Arch_ParseArchive will set 'line' to be the first non-blank 1203 * after the archive-spec. It creates/finds nodes for the members 1204 * and places them on the given list, returning SUCCESS if all 1205 * went well and FAILURE if there was an error in the 1206 * specification. On error, line should remain untouched. 1207 */ 1208 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1209 Parse_Error(PARSE_FATAL, 1210 "Error in archive specification: \"%s\"", line); 1211 goto out; 1212 } else { 1213 continue; 1214 } 1215 } 1216 savec = *cp; 1217 1218 if (!*cp) { 1219 /* 1220 * Ending a dependency line without an operator is a Bozo 1221 * no-no. As a heuristic, this is also often triggered by 1222 * undetected conflicts from cvs/rcs merges. 1223 */ 1224 if ((strncmp(line, "<<<<<<", 6) == 0) || 1225 (strncmp(line, "======", 6) == 0) || 1226 (strncmp(line, ">>>>>>", 6) == 0)) 1227 Parse_Error(PARSE_FATAL, 1228 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1229 else 1230 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1231 : "Need an operator"); 1232 goto out; 1233 } 1234 *cp = '\0'; 1235 1236 /* 1237 * Have a word in line. See if it's a special target and set 1238 * specType to match it. 1239 */ 1240 if (*line == '.' && isupper ((unsigned char)line[1])) { 1241 /* 1242 * See if the target is a special target that must have it 1243 * or its sources handled specially. 1244 */ 1245 int keywd = ParseFindKeyword(line); 1246 if (keywd != -1) { 1247 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1248 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1249 goto out; 1250 } 1251 1252 specType = parseKeywords[keywd].spec; 1253 tOp = parseKeywords[keywd].op; 1254 1255 /* 1256 * Certain special targets have special semantics: 1257 * .PATH Have to set the dirSearchPath 1258 * variable too 1259 * .MAIN Its sources are only used if 1260 * nothing has been specified to 1261 * create. 1262 * .DEFAULT Need to create a node to hang 1263 * commands on, but we don't want 1264 * it in the graph, nor do we want 1265 * it to be the Main Target, so we 1266 * create it, set OP_NOTMAIN and 1267 * add it to the list, setting 1268 * DEFAULT to the new node for 1269 * later use. We claim the node is 1270 * A transformation rule to make 1271 * life easier later, when we'll 1272 * use Make_HandleUse to actually 1273 * apply the .DEFAULT commands. 1274 * .PHONY The list of targets 1275 * .NOPATH Don't search for file in the path 1276 * .BEGIN 1277 * .END 1278 * .ERROR 1279 * .INTERRUPT Are not to be considered the 1280 * main target. 1281 * .NOTPARALLEL Make only one target at a time. 1282 * .SINGLESHELL Create a shell for each command. 1283 * .ORDER Must set initial predecessor to NULL 1284 */ 1285 switch (specType) { 1286 case ExPath: 1287 if (paths == NULL) { 1288 paths = Lst_Init(FALSE); 1289 } 1290 (void)Lst_AtEnd(paths, dirSearchPath); 1291 break; 1292 case Main: 1293 if (!Lst_IsEmpty(create)) { 1294 specType = Not; 1295 } 1296 break; 1297 case Begin: 1298 case End: 1299 case dotError: 1300 case Interrupt: 1301 gn = Targ_FindNode(line, TARG_CREATE); 1302 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1303 (void)Lst_AtEnd(targets, gn); 1304 break; 1305 case Default: 1306 gn = Targ_NewGN(".DEFAULT"); 1307 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1308 (void)Lst_AtEnd(targets, gn); 1309 DEFAULT = gn; 1310 break; 1311 case NotParallel: 1312 maxJobs = 1; 1313 break; 1314 case SingleShell: 1315 compatMake = TRUE; 1316 break; 1317 case Order: 1318 predecessor = NULL; 1319 break; 1320 default: 1321 break; 1322 } 1323 } else if (strncmp(line, ".PATH", 5) == 0) { 1324 /* 1325 * .PATH<suffix> has to be handled specially. 1326 * Call on the suffix module to give us a path to 1327 * modify. 1328 */ 1329 Lst path; 1330 1331 specType = ExPath; 1332 path = Suff_GetPath(&line[5]); 1333 if (path == NULL) { 1334 Parse_Error(PARSE_FATAL, 1335 "Suffix '%s' not defined (yet)", 1336 &line[5]); 1337 goto out; 1338 } else { 1339 if (paths == (Lst)NULL) { 1340 paths = Lst_Init(FALSE); 1341 } 1342 (void)Lst_AtEnd(paths, path); 1343 } 1344 } 1345 } 1346 1347 /* 1348 * Have word in line. Get or create its node and stick it at 1349 * the end of the targets list 1350 */ 1351 if ((specType == Not) && (*line != '\0')) { 1352 if (Dir_HasWildcards(line)) { 1353 /* 1354 * Targets are to be sought only in the current directory, 1355 * so create an empty path for the thing. Note we need to 1356 * use Dir_Destroy in the destruction of the path as the 1357 * Dir module could have added a directory to the path... 1358 */ 1359 Lst emptyPath = Lst_Init(FALSE); 1360 1361 Dir_Expand(line, emptyPath, curTargs); 1362 1363 Lst_Destroy(emptyPath, Dir_Destroy); 1364 } else { 1365 /* 1366 * No wildcards, but we want to avoid code duplication, 1367 * so create a list with the word on it. 1368 */ 1369 (void)Lst_AtEnd(curTargs, line); 1370 } 1371 1372 while(!Lst_IsEmpty(curTargs)) { 1373 char *targName = (char *)Lst_DeQueue(curTargs); 1374 1375 if (!Suff_IsTransform (targName)) { 1376 gn = Targ_FindNode(targName, TARG_CREATE); 1377 } else { 1378 gn = Suff_AddTransform(targName); 1379 } 1380 1381 (void)Lst_AtEnd(targets, gn); 1382 } 1383 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1384 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1385 } 1386 1387 *cp = savec; 1388 /* 1389 * If it is a special type and not .PATH, it's the only target we 1390 * allow on this line... 1391 */ 1392 if (specType != Not && specType != ExPath) { 1393 Boolean warning = FALSE; 1394 1395 while (*cp && (ParseIsEscaped(lstart, cp) || 1396 ((*cp != '!') && (*cp != ':')))) { 1397 if (ParseIsEscaped(lstart, cp) || 1398 (*cp != ' ' && *cp != '\t')) { 1399 warning = TRUE; 1400 } 1401 cp++; 1402 } 1403 if (warning) { 1404 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1405 } 1406 } else { 1407 while (*cp && isspace ((unsigned char)*cp)) { 1408 cp++; 1409 } 1410 } 1411 line = cp; 1412 } while (*line && (ParseIsEscaped(lstart, line) || 1413 ((*line != '!') && (*line != ':')))); 1414 1415 /* 1416 * Don't need the list of target names anymore... 1417 */ 1418 Lst_Destroy(curTargs, NULL); 1419 curTargs = NULL; 1420 1421 if (!Lst_IsEmpty(targets)) { 1422 switch(specType) { 1423 default: 1424 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1425 break; 1426 case Default: 1427 case Begin: 1428 case End: 1429 case dotError: 1430 case Interrupt: 1431 /* 1432 * These four create nodes on which to hang commands, so 1433 * targets shouldn't be empty... 1434 */ 1435 case Not: 1436 /* 1437 * Nothing special here -- targets can be empty if it wants. 1438 */ 1439 break; 1440 } 1441 } 1442 1443 /* 1444 * Have now parsed all the target names. Must parse the operator next. The 1445 * result is left in op . 1446 */ 1447 if (*cp == '!') { 1448 op = OP_FORCE; 1449 } else if (*cp == ':') { 1450 if (cp[1] == ':') { 1451 op = OP_DOUBLEDEP; 1452 cp++; 1453 } else { 1454 op = OP_DEPENDS; 1455 } 1456 } else { 1457 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1458 : "Missing dependency operator"); 1459 goto out; 1460 } 1461 1462 cp++; /* Advance beyond operator */ 1463 1464 Lst_ForEach(targets, ParseDoOp, &op); 1465 1466 /* 1467 * Get to the first source 1468 */ 1469 while (*cp && isspace ((unsigned char)*cp)) { 1470 cp++; 1471 } 1472 line = cp; 1473 1474 /* 1475 * Several special targets take different actions if present with no 1476 * sources: 1477 * a .SUFFIXES line with no sources clears out all old suffixes 1478 * a .PRECIOUS line makes all targets precious 1479 * a .IGNORE line ignores errors for all targets 1480 * a .SILENT line creates silence when making all targets 1481 * a .PATH removes all directories from the search path(s). 1482 */ 1483 if (!*line) { 1484 switch (specType) { 1485 case Suffixes: 1486 Suff_ClearSuffixes(); 1487 break; 1488 case Precious: 1489 allPrecious = TRUE; 1490 break; 1491 case Ignore: 1492 ignoreErrors = TRUE; 1493 break; 1494 case Silent: 1495 beSilent = TRUE; 1496 break; 1497 case ExPath: 1498 Lst_ForEach(paths, ParseClearPath, NULL); 1499 Dir_SetPATH(); 1500 break; 1501 #ifdef POSIX 1502 case Posix: 1503 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1504 break; 1505 #endif 1506 default: 1507 break; 1508 } 1509 } else if (specType == MFlags) { 1510 /* 1511 * Call on functions in main.c to deal with these arguments and 1512 * set the initial character to a null-character so the loop to 1513 * get sources won't get anything 1514 */ 1515 Main_ParseArgLine(line); 1516 *line = '\0'; 1517 } else if (specType == ExShell) { 1518 if (Job_ParseShell(line) != SUCCESS) { 1519 Parse_Error(PARSE_FATAL, "improper shell specification"); 1520 goto out; 1521 } 1522 *line = '\0'; 1523 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1524 *line = '\0'; 1525 } 1526 1527 /* 1528 * NOW GO FOR THE SOURCES 1529 */ 1530 if ((specType == Suffixes) || (specType == ExPath) || 1531 (specType == Includes) || (specType == Libs) || 1532 (specType == Null) || (specType == ExObjdir)) 1533 { 1534 while (*line) { 1535 /* 1536 * If the target was one that doesn't take files as its sources 1537 * but takes something like suffixes, we take each 1538 * space-separated word on the line as a something and deal 1539 * with it accordingly. 1540 * 1541 * If the target was .SUFFIXES, we take each source as a 1542 * suffix and add it to the list of suffixes maintained by the 1543 * Suff module. 1544 * 1545 * If the target was a .PATH, we add the source as a directory 1546 * to search on the search path. 1547 * 1548 * If it was .INCLUDES, the source is taken to be the suffix of 1549 * files which will be #included and whose search path should 1550 * be present in the .INCLUDES variable. 1551 * 1552 * If it was .LIBS, the source is taken to be the suffix of 1553 * files which are considered libraries and whose search path 1554 * should be present in the .LIBS variable. 1555 * 1556 * If it was .NULL, the source is the suffix to use when a file 1557 * has no valid suffix. 1558 * 1559 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1560 * and will cause make to do a new chdir to that path. 1561 */ 1562 while (*cp && !isspace ((unsigned char)*cp)) { 1563 cp++; 1564 } 1565 savec = *cp; 1566 *cp = '\0'; 1567 switch (specType) { 1568 case Suffixes: 1569 Suff_AddSuffix(line, &mainNode); 1570 break; 1571 case ExPath: 1572 Lst_ForEach(paths, ParseAddDir, line); 1573 break; 1574 case Includes: 1575 Suff_AddInclude(line); 1576 break; 1577 case Libs: 1578 Suff_AddLib(line); 1579 break; 1580 case Null: 1581 Suff_SetNull(line); 1582 break; 1583 case ExObjdir: 1584 Main_SetObjdir(line); 1585 break; 1586 default: 1587 break; 1588 } 1589 *cp = savec; 1590 if (savec != '\0') { 1591 cp++; 1592 } 1593 while (*cp && isspace ((unsigned char)*cp)) { 1594 cp++; 1595 } 1596 line = cp; 1597 } 1598 if (paths) { 1599 Lst_Destroy(paths, NULL); 1600 } 1601 if (specType == ExPath) 1602 Dir_SetPATH(); 1603 } else { 1604 while (*line) { 1605 /* 1606 * The targets take real sources, so we must beware of archive 1607 * specifications (i.e. things with left parentheses in them) 1608 * and handle them accordingly. 1609 */ 1610 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1611 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1612 /* 1613 * Only stop for a left parenthesis if it isn't at the 1614 * start of a word (that'll be for variable changes 1615 * later) and isn't preceded by a dollar sign (a dynamic 1616 * source). 1617 */ 1618 break; 1619 } 1620 } 1621 1622 if (*cp == LPAREN) { 1623 sources = Lst_Init(FALSE); 1624 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1625 Parse_Error(PARSE_FATAL, 1626 "Error in source archive spec \"%s\"", line); 1627 goto out; 1628 } 1629 1630 while (!Lst_IsEmpty (sources)) { 1631 gn = (GNode *)Lst_DeQueue(sources); 1632 ParseDoSrc(tOp, gn->name); 1633 } 1634 Lst_Destroy(sources, NULL); 1635 cp = line; 1636 } else { 1637 if (*cp) { 1638 *cp = '\0'; 1639 cp += 1; 1640 } 1641 1642 ParseDoSrc(tOp, line); 1643 } 1644 while (*cp && isspace ((unsigned char)*cp)) { 1645 cp++; 1646 } 1647 line = cp; 1648 } 1649 } 1650 1651 if (mainNode == NULL) { 1652 /* 1653 * If we have yet to decide on a main target to make, in the 1654 * absence of any user input, we want the first target on 1655 * the first dependency line that is actually a real target 1656 * (i.e. isn't a .USE or .EXEC rule) to be made. 1657 */ 1658 Lst_ForEach(targets, ParseFindMain, NULL); 1659 } 1660 1661 out: 1662 if (curTargs) 1663 Lst_Destroy(curTargs, NULL); 1664 } 1665 1666 /*- 1667 *--------------------------------------------------------------------- 1668 * Parse_IsVar -- 1669 * Return TRUE if the passed line is a variable assignment. A variable 1670 * assignment consists of a single word followed by optional whitespace 1671 * followed by either a += or an = operator. 1672 * This function is used both by the Parse_File function and main when 1673 * parsing the command-line arguments. 1674 * 1675 * Input: 1676 * line the line to check 1677 * 1678 * Results: 1679 * TRUE if it is. FALSE if it ain't 1680 * 1681 * Side Effects: 1682 * none 1683 *--------------------------------------------------------------------- 1684 */ 1685 Boolean 1686 Parse_IsVar(char *line) 1687 { 1688 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1689 char ch; 1690 int level = 0; 1691 #define ISEQOPERATOR(c) \ 1692 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1693 1694 /* 1695 * Skip to variable name 1696 */ 1697 for (;(*line == ' ') || (*line == '\t'); line++) 1698 continue; 1699 1700 /* Scan for one of the assignment operators outside a variable expansion */ 1701 while ((ch = *line++) != 0) { 1702 if (ch == '(' || ch == '{') { 1703 level++; 1704 continue; 1705 } 1706 if (ch == ')' || ch == '}') { 1707 level--; 1708 continue; 1709 } 1710 if (level != 0) 1711 continue; 1712 while (ch == ' ' || ch == '\t') { 1713 ch = *line++; 1714 wasSpace = TRUE; 1715 } 1716 if (ch == '=') 1717 return TRUE; 1718 if (*line == '=' && ISEQOPERATOR(ch)) 1719 return TRUE; 1720 if (wasSpace) 1721 return FALSE; 1722 } 1723 1724 return FALSE; 1725 } 1726 1727 /*- 1728 *--------------------------------------------------------------------- 1729 * Parse_DoVar -- 1730 * Take the variable assignment in the passed line and do it in the 1731 * global context. 1732 * 1733 * Note: There is a lexical ambiguity with assignment modifier characters 1734 * in variable names. This routine interprets the character before the = 1735 * as a modifier. Therefore, an assignment like 1736 * C++=/usr/bin/CC 1737 * is interpreted as "C+ +=" instead of "C++ =". 1738 * 1739 * Input: 1740 * line a line guaranteed to be a variable assignment. 1741 * This reduces error checks 1742 * ctxt Context in which to do the assignment 1743 * 1744 * Results: 1745 * none 1746 * 1747 * Side Effects: 1748 * the variable structure of the given variable name is altered in the 1749 * global context. 1750 *--------------------------------------------------------------------- 1751 */ 1752 void 1753 Parse_DoVar(char *line, GNode *ctxt) 1754 { 1755 char *cp; /* pointer into line */ 1756 enum { 1757 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1758 } type; /* Type of assignment */ 1759 char *opc; /* ptr to operator character to 1760 * null-terminate the variable name */ 1761 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1762 * i.e. if any variable expansion was 1763 * performed */ 1764 int depth; 1765 1766 /* 1767 * Skip to variable name 1768 */ 1769 while ((*line == ' ') || (*line == '\t')) { 1770 line++; 1771 } 1772 1773 /* 1774 * Skip to operator character, nulling out whitespace as we go 1775 * XXX Rather than counting () and {} we should look for $ and 1776 * then expand the variable. 1777 */ 1778 for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) { 1779 if (*cp == '(' || *cp == '{') { 1780 depth++; 1781 continue; 1782 } 1783 if (*cp == ')' || *cp == '}') { 1784 depth--; 1785 continue; 1786 } 1787 if (depth == 0 && isspace ((unsigned char)*cp)) { 1788 *cp = '\0'; 1789 } 1790 } 1791 opc = cp-1; /* operator is the previous character */ 1792 *cp++ = '\0'; /* nuke the = */ 1793 1794 /* 1795 * Check operator type 1796 */ 1797 switch (*opc) { 1798 case '+': 1799 type = VAR_APPEND; 1800 *opc = '\0'; 1801 break; 1802 1803 case '?': 1804 /* 1805 * If the variable already has a value, we don't do anything. 1806 */ 1807 *opc = '\0'; 1808 if (Var_Exists(line, ctxt)) { 1809 return; 1810 } else { 1811 type = VAR_NORMAL; 1812 } 1813 break; 1814 1815 case ':': 1816 type = VAR_SUBST; 1817 *opc = '\0'; 1818 break; 1819 1820 case '!': 1821 type = VAR_SHELL; 1822 *opc = '\0'; 1823 break; 1824 1825 default: 1826 #ifdef SUNSHCMD 1827 while (opc > line && *opc != ':') 1828 opc--; 1829 1830 if (strncmp(opc, ":sh", 3) == 0) { 1831 type = VAR_SHELL; 1832 *opc = '\0'; 1833 break; 1834 } 1835 #endif 1836 type = VAR_NORMAL; 1837 break; 1838 } 1839 1840 while (isspace ((unsigned char)*cp)) { 1841 cp++; 1842 } 1843 1844 if (type == VAR_APPEND) { 1845 Var_Append(line, cp, ctxt); 1846 } else if (type == VAR_SUBST) { 1847 /* 1848 * Allow variables in the old value to be undefined, but leave their 1849 * invocation alone -- this is done by forcing oldVars to be false. 1850 * XXX: This can cause recursive variables, but that's not hard to do, 1851 * and this allows someone to do something like 1852 * 1853 * CFLAGS = $(.INCLUDES) 1854 * CFLAGS := -I.. $(CFLAGS) 1855 * 1856 * And not get an error. 1857 */ 1858 Boolean oldOldVars = oldVars; 1859 1860 oldVars = FALSE; 1861 1862 /* 1863 * make sure that we set the variable the first time to nothing 1864 * so that it gets substituted! 1865 */ 1866 if (!Var_Exists(line, ctxt)) 1867 Var_Set(line, "", ctxt, 0); 1868 1869 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1870 oldVars = oldOldVars; 1871 freeCp = TRUE; 1872 1873 Var_Set(line, cp, ctxt, 0); 1874 } else if (type == VAR_SHELL) { 1875 char *res; 1876 const char *error; 1877 1878 if (strchr(cp, '$') != NULL) { 1879 /* 1880 * There's a dollar sign in the command, so perform variable 1881 * expansion on the whole thing. The resulting string will need 1882 * freeing when we're done, so set freeCmd to TRUE. 1883 */ 1884 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1885 freeCp = TRUE; 1886 } 1887 1888 res = Cmd_Exec(cp, &error); 1889 Var_Set(line, res, ctxt, 0); 1890 free(res); 1891 1892 if (error) 1893 Parse_Error(PARSE_WARNING, error, cp); 1894 } else { 1895 /* 1896 * Normal assignment -- just do it. 1897 */ 1898 Var_Set(line, cp, ctxt, 0); 1899 } 1900 if (strcmp(line, MAKEOVERRIDES) == 0) 1901 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1902 else if (strcmp(line, ".CURDIR") == 0) { 1903 /* 1904 * Somone is being (too?) clever... 1905 * Let's pretend they know what they are doing and 1906 * re-initialize the 'cur' Path. 1907 */ 1908 Dir_InitCur(cp); 1909 Dir_SetPATH(); 1910 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 1911 Job_SetPrefix(); 1912 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 1913 Var_Export(cp, 0); 1914 } 1915 if (freeCp) 1916 free(cp); 1917 } 1918 1919 1920 /*- 1921 * ParseAddCmd -- 1922 * Lst_ForEach function to add a command line to all targets 1923 * 1924 * Input: 1925 * gnp the node to which the command is to be added 1926 * cmd the command to add 1927 * 1928 * Results: 1929 * Always 0 1930 * 1931 * Side Effects: 1932 * A new element is added to the commands list of the node. 1933 */ 1934 static int 1935 ParseAddCmd(void *gnp, void *cmd) 1936 { 1937 GNode *gn = (GNode *)gnp; 1938 1939 /* Add to last (ie current) cohort for :: targets */ 1940 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 1941 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 1942 1943 /* if target already supplied, ignore commands */ 1944 if (!(gn->type & OP_HAS_COMMANDS)) { 1945 (void)Lst_AtEnd(gn->commands, cmd); 1946 ParseMark(gn); 1947 } else { 1948 #ifdef notyet 1949 /* XXX: We cannot do this until we fix the tree */ 1950 (void)Lst_AtEnd(gn->commands, cmd); 1951 Parse_Error(PARSE_WARNING, 1952 "overriding commands for target \"%s\"; " 1953 "previous commands defined at %s: %d ignored", 1954 gn->name, gn->fname, gn->lineno); 1955 #else 1956 Parse_Error(PARSE_WARNING, 1957 "duplicate script for target \"%s\" ignored", 1958 gn->name); 1959 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 1960 "using previous script for \"%s\" defined here", 1961 gn->name); 1962 #endif 1963 } 1964 return(0); 1965 } 1966 1967 /*- 1968 *----------------------------------------------------------------------- 1969 * ParseHasCommands -- 1970 * Callback procedure for Parse_File when destroying the list of 1971 * targets on the last dependency line. Marks a target as already 1972 * having commands if it does, to keep from having shell commands 1973 * on multiple dependency lines. 1974 * 1975 * Input: 1976 * gnp Node to examine 1977 * 1978 * Results: 1979 * None 1980 * 1981 * Side Effects: 1982 * OP_HAS_COMMANDS may be set for the target. 1983 * 1984 *----------------------------------------------------------------------- 1985 */ 1986 static void 1987 ParseHasCommands(void *gnp) 1988 { 1989 GNode *gn = (GNode *)gnp; 1990 if (!Lst_IsEmpty(gn->commands)) { 1991 gn->type |= OP_HAS_COMMANDS; 1992 } 1993 } 1994 1995 /*- 1996 *----------------------------------------------------------------------- 1997 * Parse_AddIncludeDir -- 1998 * Add a directory to the path searched for included makefiles 1999 * bracketed by double-quotes. Used by functions in main.c 2000 * 2001 * Input: 2002 * dir The name of the directory to add 2003 * 2004 * Results: 2005 * None. 2006 * 2007 * Side Effects: 2008 * The directory is appended to the list. 2009 * 2010 *----------------------------------------------------------------------- 2011 */ 2012 void 2013 Parse_AddIncludeDir(char *dir) 2014 { 2015 (void)Dir_AddDir(parseIncPath, dir); 2016 } 2017 2018 /*- 2019 *--------------------------------------------------------------------- 2020 * ParseDoInclude -- 2021 * Push to another file. 2022 * 2023 * The input is the line minus the `.'. A file spec is a string 2024 * enclosed in <> or "". The former is looked for only in sysIncPath. 2025 * The latter in . and the directories specified by -I command line 2026 * options 2027 * 2028 * Results: 2029 * None 2030 * 2031 * Side Effects: 2032 * A structure is added to the includes Lst and readProc, lineno, 2033 * fname and curFILE are altered for the new file 2034 *--------------------------------------------------------------------- 2035 */ 2036 2037 static void 2038 Parse_include_file(char *file, Boolean isSystem, int silent) 2039 { 2040 struct loadedfile *lf; 2041 char *fullname; /* full pathname of file */ 2042 char *newName; 2043 char *prefEnd, *incdir; 2044 int fd; 2045 int i; 2046 2047 /* 2048 * Now we know the file's name and its search path, we attempt to 2049 * find the durn thing. A return of NULL indicates the file don't 2050 * exist. 2051 */ 2052 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2053 2054 if (fullname == NULL && !isSystem) { 2055 /* 2056 * Include files contained in double-quotes are first searched for 2057 * relative to the including file's location. We don't want to 2058 * cd there, of course, so we just tack on the old file's 2059 * leading path components and call Dir_FindFile to see if 2060 * we can locate the beast. 2061 */ 2062 2063 incdir = bmake_strdup(curFile->fname); 2064 prefEnd = strrchr(incdir, '/'); 2065 if (prefEnd != NULL) { 2066 *prefEnd = '\0'; 2067 /* Now do lexical processing of leading "../" on the filename */ 2068 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2069 prefEnd = strrchr(incdir + 1, '/'); 2070 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2071 break; 2072 *prefEnd = '\0'; 2073 } 2074 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2075 fullname = Dir_FindFile(newName, parseIncPath); 2076 if (fullname == NULL) 2077 fullname = Dir_FindFile(newName, dirSearchPath); 2078 free(newName); 2079 } 2080 free(incdir); 2081 2082 if (fullname == NULL) { 2083 /* 2084 * Makefile wasn't found in same directory as included makefile. 2085 * Search for it first on the -I search path, 2086 * then on the .PATH search path, if not found in a -I directory. 2087 * If we have a suffix specific path we should use that. 2088 */ 2089 char *suff; 2090 Lst suffPath = NULL; 2091 2092 if ((suff = strrchr(file, '.'))) { 2093 suffPath = Suff_GetPath(suff); 2094 if (suffPath != NULL) { 2095 fullname = Dir_FindFile(file, suffPath); 2096 } 2097 } 2098 if (fullname == NULL) { 2099 fullname = Dir_FindFile(file, parseIncPath); 2100 if (fullname == NULL) { 2101 fullname = Dir_FindFile(file, dirSearchPath); 2102 } 2103 } 2104 } 2105 } 2106 2107 /* Looking for a system file or file still not found */ 2108 if (fullname == NULL) { 2109 /* 2110 * Look for it on the system path 2111 */ 2112 fullname = Dir_FindFile(file, 2113 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2114 } 2115 2116 if (fullname == NULL) { 2117 if (!silent) 2118 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2119 return; 2120 } 2121 2122 /* Actually open the file... */ 2123 fd = open(fullname, O_RDONLY); 2124 if (fd == -1) { 2125 if (!silent) 2126 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2127 free(fullname); 2128 return; 2129 } 2130 2131 /* load it */ 2132 lf = loadfile(fullname, fd); 2133 2134 /* Start reading from this file next */ 2135 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2136 curFile->lf = lf; 2137 } 2138 2139 static void 2140 ParseDoInclude(char *line) 2141 { 2142 char endc; /* the character which ends the file spec */ 2143 char *cp; /* current position in file spec */ 2144 int silent = (*line != 'i') ? 1 : 0; 2145 char *file = &line[7 + silent]; 2146 2147 /* Skip to delimiter character so we know where to look */ 2148 while (*file == ' ' || *file == '\t') 2149 file++; 2150 2151 if (*file != '"' && *file != '<') { 2152 Parse_Error(PARSE_FATAL, 2153 ".include filename must be delimited by '\"' or '<'"); 2154 return; 2155 } 2156 2157 /* 2158 * Set the search path on which to find the include file based on the 2159 * characters which bracket its name. Angle-brackets imply it's 2160 * a system Makefile while double-quotes imply it's a user makefile 2161 */ 2162 if (*file == '<') { 2163 endc = '>'; 2164 } else { 2165 endc = '"'; 2166 } 2167 2168 /* Skip to matching delimiter */ 2169 for (cp = ++file; *cp && *cp != endc; cp++) 2170 continue; 2171 2172 if (*cp != endc) { 2173 Parse_Error(PARSE_FATAL, 2174 "Unclosed %cinclude filename. '%c' expected", 2175 '.', endc); 2176 return; 2177 } 2178 *cp = '\0'; 2179 2180 /* 2181 * Substitute for any variables in the file name before trying to 2182 * find the thing. 2183 */ 2184 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2185 2186 Parse_include_file(file, endc == '>', silent); 2187 free(file); 2188 } 2189 2190 2191 /*- 2192 *--------------------------------------------------------------------- 2193 * ParseSetParseFile -- 2194 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2195 * basename of the given filename 2196 * 2197 * Results: 2198 * None 2199 * 2200 * Side Effects: 2201 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2202 * dirname and basename of the given filename. 2203 *--------------------------------------------------------------------- 2204 */ 2205 static void 2206 ParseSetParseFile(const char *filename) 2207 { 2208 char *slash; 2209 char *dirname; 2210 int len; 2211 2212 slash = strrchr(filename, '/'); 2213 if (slash == NULL) { 2214 Var_Set(".PARSEDIR", curdir, VAR_GLOBAL, 0); 2215 Var_Set(".PARSEFILE", filename, VAR_GLOBAL, 0); 2216 } else { 2217 len = slash - filename; 2218 dirname = bmake_malloc(len + 1); 2219 memcpy(dirname, filename, len); 2220 dirname[len] = 0; 2221 Var_Set(".PARSEDIR", dirname, VAR_GLOBAL, 0); 2222 Var_Set(".PARSEFILE", slash+1, VAR_GLOBAL, 0); 2223 free(dirname); 2224 } 2225 } 2226 2227 /* 2228 * Track the makefiles we read - so makefiles can 2229 * set dependencies on them. 2230 * Avoid adding anything more than once. 2231 */ 2232 2233 static void 2234 ParseTrackInput(const char *name) 2235 { 2236 char *old; 2237 char *fp = NULL; 2238 size_t name_len = strlen(name); 2239 2240 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2241 if (old) { 2242 /* does it contain name? */ 2243 for (; old != NULL; old = strchr(old, ' ')) { 2244 if (*old == ' ') 2245 old++; 2246 if (memcmp(old, name, name_len) == 0 2247 && (old[name_len] == 0 || old[name_len] == ' ')) 2248 goto cleanup; 2249 } 2250 } 2251 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2252 cleanup: 2253 if (fp) { 2254 free(fp); 2255 } 2256 } 2257 2258 2259 /*- 2260 *--------------------------------------------------------------------- 2261 * Parse_setInput -- 2262 * Start Parsing from the given source 2263 * 2264 * Results: 2265 * None 2266 * 2267 * Side Effects: 2268 * A structure is added to the includes Lst and readProc, lineno, 2269 * fname and curFile are altered for the new file 2270 *--------------------------------------------------------------------- 2271 */ 2272 void 2273 Parse_SetInput(const char *name, int line, int fd, 2274 char *(*nextbuf)(void *, size_t *), void *arg) 2275 { 2276 char *buf; 2277 size_t len; 2278 2279 if (name == NULL) 2280 name = curFile->fname; 2281 else 2282 ParseTrackInput(name); 2283 2284 if (DEBUG(PARSE)) 2285 fprintf(debug_file, "Parse_SetInput: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2286 name, line, fd, nextbuf, arg); 2287 2288 if (fd == -1 && nextbuf == NULL) 2289 /* sanity */ 2290 return; 2291 2292 if (curFile != NULL) 2293 /* Save exiting file info */ 2294 Lst_AtFront(includes, curFile); 2295 2296 /* Allocate and fill in new structure */ 2297 curFile = bmake_malloc(sizeof *curFile); 2298 2299 /* 2300 * Once the previous state has been saved, we can get down to reading 2301 * the new file. We set up the name of the file to be the absolute 2302 * name of the include file so error messages refer to the right 2303 * place. 2304 */ 2305 curFile->fname = name; 2306 curFile->lineno = line; 2307 curFile->first_lineno = line; 2308 curFile->nextbuf = nextbuf; 2309 curFile->nextbuf_arg = arg; 2310 curFile->lf = NULL; 2311 2312 assert(nextbuf != NULL); 2313 2314 /* Get first block of input data */ 2315 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2316 if (buf == NULL) { 2317 /* Was all a waste of time ... */ 2318 free(curFile); 2319 return; 2320 } 2321 curFile->P_str = buf; 2322 curFile->P_ptr = buf; 2323 curFile->P_end = buf+len; 2324 2325 curFile->cond_depth = Cond_save_depth(); 2326 ParseSetParseFile(name); 2327 } 2328 2329 #ifdef SYSVINCLUDE 2330 /*- 2331 *--------------------------------------------------------------------- 2332 * ParseTraditionalInclude -- 2333 * Push to another file. 2334 * 2335 * The input is the current line. The file name(s) are 2336 * following the "include". 2337 * 2338 * Results: 2339 * None 2340 * 2341 * Side Effects: 2342 * A structure is added to the includes Lst and readProc, lineno, 2343 * fname and curFILE are altered for the new file 2344 *--------------------------------------------------------------------- 2345 */ 2346 static void 2347 ParseTraditionalInclude(char *line) 2348 { 2349 char *cp; /* current position in file spec */ 2350 int done = 0; 2351 int silent = (line[0] != 'i') ? 1 : 0; 2352 char *file = &line[silent + 7]; 2353 char *all_files; 2354 2355 if (DEBUG(PARSE)) { 2356 fprintf(debug_file, "ParseTraditionalInclude: %s\n", file); 2357 } 2358 2359 /* 2360 * Skip over whitespace 2361 */ 2362 while (isspace((unsigned char)*file)) 2363 file++; 2364 2365 /* 2366 * Substitute for any variables in the file name before trying to 2367 * find the thing. 2368 */ 2369 all_files = Var_Subst(NULL, file, VAR_CMD, FALSE); 2370 2371 if (*file == '\0') { 2372 Parse_Error(PARSE_FATAL, 2373 "Filename missing from \"include\""); 2374 return; 2375 } 2376 2377 for (file = all_files; !done; file = cp + 1) { 2378 /* Skip to end of line or next whitespace */ 2379 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2380 continue; 2381 2382 if (*cp) 2383 *cp = '\0'; 2384 else 2385 done = 1; 2386 2387 Parse_include_file(file, FALSE, silent); 2388 } 2389 free(all_files); 2390 } 2391 #endif 2392 2393 /*- 2394 *--------------------------------------------------------------------- 2395 * ParseEOF -- 2396 * Called when EOF is reached in the current file. If we were reading 2397 * an include file, the includes stack is popped and things set up 2398 * to go back to reading the previous file at the previous location. 2399 * 2400 * Results: 2401 * CONTINUE if there's more to do. DONE if not. 2402 * 2403 * Side Effects: 2404 * The old curFILE, is closed. The includes list is shortened. 2405 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2406 *--------------------------------------------------------------------- 2407 */ 2408 static int 2409 ParseEOF(void) 2410 { 2411 char *ptr; 2412 size_t len; 2413 2414 assert(curFile->nextbuf != NULL); 2415 2416 /* get next input buffer, if any */ 2417 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2418 curFile->P_ptr = ptr; 2419 curFile->P_str = ptr; 2420 curFile->P_end = ptr + len; 2421 curFile->lineno = curFile->first_lineno; 2422 if (ptr != NULL) { 2423 /* Iterate again */ 2424 return CONTINUE; 2425 } 2426 2427 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2428 Cond_restore_depth(curFile->cond_depth); 2429 2430 if (curFile->lf != NULL) { 2431 loadedfile_destroy(curFile->lf); 2432 curFile->lf = NULL; 2433 } 2434 2435 /* Dispose of curFile info */ 2436 /* Leak curFile->fname because all the gnodes have pointers to it */ 2437 free(curFile->P_str); 2438 free(curFile); 2439 2440 curFile = Lst_DeQueue(includes); 2441 2442 if (curFile == NULL) { 2443 /* We've run out of input */ 2444 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2445 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2446 return DONE; 2447 } 2448 2449 if (DEBUG(PARSE)) 2450 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2451 curFile->fname, curFile->lineno); 2452 2453 /* Restore the PARSEDIR/PARSEFILE variables */ 2454 ParseSetParseFile(curFile->fname); 2455 return (CONTINUE); 2456 } 2457 2458 #define PARSE_RAW 1 2459 #define PARSE_SKIP 2 2460 2461 static char * 2462 ParseGetLine(int flags, int *length) 2463 { 2464 IFile *cf = curFile; 2465 char *ptr; 2466 char ch; 2467 char *line; 2468 char *line_end; 2469 char *escaped; 2470 char *comment; 2471 char *tp; 2472 2473 /* Loop through blank lines and comment lines */ 2474 for (;;) { 2475 cf->lineno++; 2476 line = cf->P_ptr; 2477 ptr = line; 2478 line_end = line; 2479 escaped = NULL; 2480 comment = NULL; 2481 for (;;) { 2482 if (cf->P_end != NULL && ptr == cf->P_end) { 2483 /* end of buffer */ 2484 ch = 0; 2485 break; 2486 } 2487 ch = *ptr; 2488 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2489 if (cf->P_end == NULL) 2490 /* End of string (aka for loop) data */ 2491 break; 2492 if (cf->nextbuf != NULL) { 2493 /* 2494 * End of this buffer; return EOF and outer logic 2495 * will get the next one. (eww) 2496 */ 2497 break; 2498 } 2499 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2500 return NULL; 2501 } 2502 2503 if (ch == '\\') { 2504 /* Don't treat next character as special, remember first one */ 2505 if (escaped == NULL) 2506 escaped = ptr; 2507 if (ptr[1] == '\n') 2508 cf->lineno++; 2509 ptr += 2; 2510 line_end = ptr; 2511 continue; 2512 } 2513 if (ch == '#' && comment == NULL) { 2514 /* Remember first '#' for comment stripping */ 2515 comment = line_end; 2516 } 2517 ptr++; 2518 if (ch == '\n') 2519 break; 2520 if (!isspace((unsigned char)ch)) 2521 /* We are not interested in trailing whitespace */ 2522 line_end = ptr; 2523 } 2524 2525 /* Save next 'to be processed' location */ 2526 cf->P_ptr = ptr; 2527 2528 /* Check we have a non-comment, non-blank line */ 2529 if (line_end == line || comment == line) { 2530 if (ch == 0) 2531 /* At end of file */ 2532 return NULL; 2533 /* Parse another line */ 2534 continue; 2535 } 2536 2537 /* We now have a line of data */ 2538 *line_end = 0; 2539 2540 if (flags & PARSE_RAW) { 2541 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2542 *length = line_end - line; 2543 return line; 2544 } 2545 2546 if (flags & PARSE_SKIP) { 2547 /* Completely ignore non-directives */ 2548 if (line[0] != '.') 2549 continue; 2550 /* We could do more of the .else/.elif/.endif checks here */ 2551 } 2552 break; 2553 } 2554 2555 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2556 if (comment != NULL && line[0] != '\t') { 2557 line_end = comment; 2558 *line_end = 0; 2559 } 2560 2561 /* If we didn't see a '\\' then the in-situ data is fine */ 2562 if (escaped == NULL) { 2563 *length = line_end - line; 2564 return line; 2565 } 2566 2567 /* Remove escapes from '\n' and '#' */ 2568 tp = ptr = escaped; 2569 escaped = line; 2570 for (; ; *tp++ = ch) { 2571 ch = *ptr++; 2572 if (ch != '\\') { 2573 if (ch == 0) 2574 break; 2575 continue; 2576 } 2577 2578 ch = *ptr++; 2579 if (ch == 0) { 2580 /* Delete '\\' at end of buffer */ 2581 tp--; 2582 break; 2583 } 2584 2585 if (ch == '#' && line[0] != '\t') 2586 /* Delete '\\' from before '#' on non-command lines */ 2587 continue; 2588 2589 if (ch != '\n') { 2590 /* Leave '\\' in buffer for later */ 2591 *tp++ = '\\'; 2592 /* Make sure we don't delete an escaped ' ' from the line end */ 2593 escaped = tp + 1; 2594 continue; 2595 } 2596 2597 /* Escaped '\n' replace following whitespace with a single ' ' */ 2598 while (ptr[0] == ' ' || ptr[0] == '\t') 2599 ptr++; 2600 ch = ' '; 2601 } 2602 2603 /* Delete any trailing spaces - eg from empty continuations */ 2604 while (tp > escaped && isspace((unsigned char)tp[-1])) 2605 tp--; 2606 2607 *tp = 0; 2608 *length = tp - line; 2609 return line; 2610 } 2611 2612 /*- 2613 *--------------------------------------------------------------------- 2614 * ParseReadLine -- 2615 * Read an entire line from the input file. Called only by Parse_File. 2616 * 2617 * Results: 2618 * A line w/o its newline 2619 * 2620 * Side Effects: 2621 * Only those associated with reading a character 2622 *--------------------------------------------------------------------- 2623 */ 2624 static char * 2625 ParseReadLine(void) 2626 { 2627 char *line; /* Result */ 2628 int lineLength; /* Length of result */ 2629 int lineno; /* Saved line # */ 2630 int rval; 2631 2632 for (;;) { 2633 line = ParseGetLine(0, &lineLength); 2634 if (line == NULL) 2635 return NULL; 2636 2637 if (line[0] != '.') 2638 return line; 2639 2640 /* 2641 * The line might be a conditional. Ask the conditional module 2642 * about it and act accordingly 2643 */ 2644 switch (Cond_Eval(line)) { 2645 case COND_SKIP: 2646 /* Skip to next conditional that evaluates to COND_PARSE. */ 2647 do { 2648 line = ParseGetLine(PARSE_SKIP, &lineLength); 2649 } while (line && Cond_Eval(line) != COND_PARSE); 2650 if (line == NULL) 2651 break; 2652 continue; 2653 case COND_PARSE: 2654 continue; 2655 case COND_INVALID: /* Not a conditional line */ 2656 /* Check for .for loops */ 2657 rval = For_Eval(line); 2658 if (rval == 0) 2659 /* Not a .for line */ 2660 break; 2661 if (rval < 0) 2662 /* Syntax error - error printed, ignore line */ 2663 continue; 2664 /* Start of a .for loop */ 2665 lineno = curFile->lineno; 2666 /* Accumulate loop lines until matching .endfor */ 2667 do { 2668 line = ParseGetLine(PARSE_RAW, &lineLength); 2669 if (line == NULL) { 2670 Parse_Error(PARSE_FATAL, 2671 "Unexpected end of file in for loop."); 2672 break; 2673 } 2674 } while (For_Accum(line)); 2675 /* Stash each iteration as a new 'input file' */ 2676 For_Run(lineno); 2677 /* Read next line from for-loop buffer */ 2678 continue; 2679 } 2680 return (line); 2681 } 2682 } 2683 2684 /*- 2685 *----------------------------------------------------------------------- 2686 * ParseFinishLine -- 2687 * Handle the end of a dependency group. 2688 * 2689 * Results: 2690 * Nothing. 2691 * 2692 * Side Effects: 2693 * inLine set FALSE. 'targets' list destroyed. 2694 * 2695 *----------------------------------------------------------------------- 2696 */ 2697 static void 2698 ParseFinishLine(void) 2699 { 2700 if (inLine) { 2701 Lst_ForEach(targets, Suff_EndTransform, NULL); 2702 Lst_Destroy(targets, ParseHasCommands); 2703 targets = NULL; 2704 inLine = FALSE; 2705 } 2706 } 2707 2708 2709 /*- 2710 *--------------------------------------------------------------------- 2711 * Parse_File -- 2712 * Parse a file into its component parts, incorporating it into the 2713 * current dependency graph. This is the main function and controls 2714 * almost every other function in this module 2715 * 2716 * Input: 2717 * name the name of the file being read 2718 * fd Open file to makefile to parse 2719 * 2720 * Results: 2721 * None 2722 * 2723 * Side Effects: 2724 * closes fd. 2725 * Loads. Nodes are added to the list of all targets, nodes and links 2726 * are added to the dependency graph. etc. etc. etc. 2727 *--------------------------------------------------------------------- 2728 */ 2729 void 2730 Parse_File(const char *name, int fd) 2731 { 2732 char *cp; /* pointer into the line */ 2733 char *line; /* the line we're working on */ 2734 struct loadedfile *lf; 2735 2736 lf = loadfile(name, fd); 2737 2738 inLine = FALSE; 2739 fatals = 0; 2740 2741 if (name == NULL) { 2742 name = "(stdin)"; 2743 } 2744 2745 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2746 curFile->lf = lf; 2747 2748 do { 2749 for (; (line = ParseReadLine()) != NULL; ) { 2750 if (DEBUG(PARSE)) 2751 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2752 curFile->lineno, line); 2753 if (*line == '.') { 2754 /* 2755 * Lines that begin with the special character may be 2756 * include or undef directives. 2757 * On the other hand they can be suffix rules (.c.o: ...) 2758 * or just dependencies for filenames that start '.'. 2759 */ 2760 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 2761 continue; 2762 } 2763 if (strncmp(cp, "include", 7) == 0 || 2764 ((cp[0] == 's' || cp[0] == '-') && 2765 strncmp(&cp[1], "include", 7) == 0)) { 2766 ParseDoInclude(cp); 2767 continue; 2768 } 2769 if (strncmp(cp, "undef", 5) == 0) { 2770 char *cp2; 2771 for (cp += 5; isspace((unsigned char) *cp); cp++) 2772 continue; 2773 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2774 (*cp2 != '\0'); cp2++) 2775 continue; 2776 *cp2 = '\0'; 2777 Var_Delete(cp, VAR_GLOBAL); 2778 continue; 2779 } else if (strncmp(cp, "export", 6) == 0) { 2780 for (cp += 6; isspace((unsigned char) *cp); cp++) 2781 continue; 2782 Var_Export(cp, 1); 2783 continue; 2784 } else if (strncmp(cp, "unexport", 8) == 0) { 2785 Var_UnExport(cp); 2786 continue; 2787 } else if (strncmp(cp, "info", 4) == 0 || 2788 strncmp(cp, "error", 5) == 0 || 2789 strncmp(cp, "warning", 7) == 0) { 2790 if (ParseMessage(cp)) 2791 continue; 2792 } 2793 } 2794 2795 if (*line == '\t') { 2796 /* 2797 * If a line starts with a tab, it can only hope to be 2798 * a creation command. 2799 */ 2800 cp = line + 1; 2801 shellCommand: 2802 for (; isspace ((unsigned char)*cp); cp++) { 2803 continue; 2804 } 2805 if (*cp) { 2806 if (!inLine) 2807 Parse_Error(PARSE_FATAL, 2808 "Unassociated shell command \"%s\"", 2809 cp); 2810 /* 2811 * So long as it's not a blank line and we're actually 2812 * in a dependency spec, add the command to the list of 2813 * commands of all targets in the dependency spec 2814 */ 2815 if (targets) { 2816 cp = bmake_strdup(cp); 2817 Lst_ForEach(targets, ParseAddCmd, cp); 2818 #ifdef CLEANUP 2819 Lst_AtEnd(targCmds, cp); 2820 #endif 2821 } 2822 } 2823 continue; 2824 } 2825 2826 #ifdef SYSVINCLUDE 2827 if (((strncmp(line, "include", 7) == 0 && 2828 isspace((unsigned char) line[7])) || 2829 ((line[0] == 's' || line[0] == '-') && 2830 strncmp(&line[1], "include", 7) == 0 && 2831 isspace((unsigned char) line[8]))) && 2832 strchr(line, ':') == NULL) { 2833 /* 2834 * It's an S3/S5-style "include". 2835 */ 2836 ParseTraditionalInclude(line); 2837 continue; 2838 } 2839 #endif 2840 if (Parse_IsVar(line)) { 2841 ParseFinishLine(); 2842 Parse_DoVar(line, VAR_GLOBAL); 2843 continue; 2844 } 2845 2846 #ifndef POSIX 2847 /* 2848 * To make life easier on novices, if the line is indented we 2849 * first make sure the line has a dependency operator in it. 2850 * If it doesn't have an operator and we're in a dependency 2851 * line's script, we assume it's actually a shell command 2852 * and add it to the current list of targets. 2853 */ 2854 cp = line; 2855 if (isspace((unsigned char) line[0])) { 2856 while ((*cp != '\0') && isspace((unsigned char) *cp)) 2857 cp++; 2858 while (*cp && (ParseIsEscaped(line, cp) || 2859 (*cp != ':') && (*cp != '!'))) { 2860 cp++; 2861 } 2862 if (*cp == '\0') { 2863 if (inLine) { 2864 Parse_Error(PARSE_WARNING, 2865 "Shell command needs a leading tab"); 2866 goto shellCommand; 2867 } 2868 } 2869 } 2870 #endif 2871 ParseFinishLine(); 2872 2873 /* 2874 * For some reason - probably to make the parser impossible - 2875 * a ';' can be used to separate commands from dependencies. 2876 * Attempt to avoid ';' inside substitution patterns. 2877 */ 2878 { 2879 int level = 0; 2880 2881 for (cp = line; *cp != 0; cp++) { 2882 if (*cp == '\\' && cp[1] != 0) { 2883 cp++; 2884 continue; 2885 } 2886 if (*cp == '$' && 2887 (cp[1] == '(' || cp[1] == '{')) { 2888 level++; 2889 continue; 2890 } 2891 if (level > 0) { 2892 if (*cp == ')' || *cp == '}') { 2893 level--; 2894 continue; 2895 } 2896 } else if (*cp == ';') { 2897 break; 2898 } 2899 } 2900 } 2901 if (*cp != 0) 2902 /* Terminate the dependency list at the ';' */ 2903 *cp++ = 0; 2904 else 2905 cp = NULL; 2906 2907 /* 2908 * We now know it's a dependency line so it needs to have all 2909 * variables expanded before being parsed. Tell the variable 2910 * module to complain if some variable is undefined... 2911 */ 2912 line = Var_Subst(NULL, line, VAR_CMD, TRUE); 2913 2914 /* 2915 * Need a non-circular list for the target nodes 2916 */ 2917 if (targets) 2918 Lst_Destroy(targets, NULL); 2919 2920 targets = Lst_Init(FALSE); 2921 inLine = TRUE; 2922 2923 ParseDoDependency(line); 2924 free(line); 2925 2926 /* If there were commands after a ';', add them now */ 2927 if (cp != NULL) { 2928 goto shellCommand; 2929 } 2930 } 2931 /* 2932 * Reached EOF, but it may be just EOF of an include file... 2933 */ 2934 } while (ParseEOF() == CONTINUE); 2935 2936 if (fatals) { 2937 (void)fflush(stdout); 2938 (void)fprintf(stderr, 2939 "%s: Fatal errors encountered -- cannot continue", 2940 progname); 2941 PrintOnError(NULL, NULL); 2942 exit(1); 2943 } 2944 } 2945 2946 /*- 2947 *--------------------------------------------------------------------- 2948 * Parse_Init -- 2949 * initialize the parsing module 2950 * 2951 * Results: 2952 * none 2953 * 2954 * Side Effects: 2955 * the parseIncPath list is initialized... 2956 *--------------------------------------------------------------------- 2957 */ 2958 void 2959 Parse_Init(void) 2960 { 2961 mainNode = NULL; 2962 parseIncPath = Lst_Init(FALSE); 2963 sysIncPath = Lst_Init(FALSE); 2964 defIncPath = Lst_Init(FALSE); 2965 includes = Lst_Init(FALSE); 2966 #ifdef CLEANUP 2967 targCmds = Lst_Init(FALSE); 2968 #endif 2969 } 2970 2971 void 2972 Parse_End(void) 2973 { 2974 #ifdef CLEANUP 2975 Lst_Destroy(targCmds, (FreeProc *)free); 2976 if (targets) 2977 Lst_Destroy(targets, NULL); 2978 Lst_Destroy(defIncPath, Dir_Destroy); 2979 Lst_Destroy(sysIncPath, Dir_Destroy); 2980 Lst_Destroy(parseIncPath, Dir_Destroy); 2981 Lst_Destroy(includes, NULL); /* Should be empty now */ 2982 #endif 2983 } 2984 2985 2986 /*- 2987 *----------------------------------------------------------------------- 2988 * Parse_MainName -- 2989 * Return a Lst of the main target to create for main()'s sake. If 2990 * no such target exists, we Punt with an obnoxious error message. 2991 * 2992 * Results: 2993 * A Lst of the single node to create. 2994 * 2995 * Side Effects: 2996 * None. 2997 * 2998 *----------------------------------------------------------------------- 2999 */ 3000 Lst 3001 Parse_MainName(void) 3002 { 3003 Lst mainList; /* result list */ 3004 3005 mainList = Lst_Init(FALSE); 3006 3007 if (mainNode == NULL) { 3008 Punt("no target to make."); 3009 /*NOTREACHED*/ 3010 } else if (mainNode->type & OP_DOUBLEDEP) { 3011 (void)Lst_AtEnd(mainList, mainNode); 3012 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3013 } 3014 else 3015 (void)Lst_AtEnd(mainList, mainNode); 3016 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3017 return (mainList); 3018 } 3019 3020 /*- 3021 *----------------------------------------------------------------------- 3022 * ParseMark -- 3023 * Add the filename and lineno to the GNode so that we remember 3024 * where it was first defined. 3025 * 3026 * Side Effects: 3027 * None. 3028 * 3029 *----------------------------------------------------------------------- 3030 */ 3031 static void 3032 ParseMark(GNode *gn) 3033 { 3034 gn->fname = curFile->fname; 3035 gn->lineno = curFile->lineno; 3036 } 3037