parse.c revision 1.180
1 /* $NetBSD: parse.c,v 1.180 2011/11/06 19:46:56 christos 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 1.180 2011/11/06 19:46:56 christos 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 1.180 2011/11/06 19:46:56 christos 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 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 522 char *b = malloc(lf->len + 1); 523 b[lf->len] = '\n'; 524 memcpy(b, lf->buf, lf->len++); 525 munmap(lf->buf, lf->maplen); 526 lf->maplen = 0; 527 lf->buf = b; 528 } 529 goto done; 530 } 531 } 532 533 /* cannot mmap; load the traditional way */ 534 535 lf->maplen = 0; 536 lf->len = 1024; 537 lf->buf = bmake_malloc(lf->len); 538 539 bufpos = 0; 540 while (1) { 541 assert(bufpos <= lf->len); 542 if (bufpos == lf->len) { 543 lf->len *= 2; 544 lf->buf = bmake_realloc(lf->buf, lf->len); 545 } 546 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 547 if (result < 0) { 548 Error("%s: read error: %s", path, strerror(errno)); 549 exit(1); 550 } 551 if (result == 0) { 552 break; 553 } 554 bufpos += result; 555 } 556 assert(bufpos <= lf->len); 557 lf->len = bufpos; 558 559 /* truncate malloc region to actual length (maybe not useful) */ 560 if (lf->len > 0) { 561 lf->buf = bmake_realloc(lf->buf, lf->len); 562 } 563 564 done: 565 if (path != NULL) { 566 close(fd); 567 } 568 return lf; 569 } 570 571 //////////////////////////////////////////////////////////// 572 // old code 573 574 /*- 575 *---------------------------------------------------------------------- 576 * ParseIsEscaped -- 577 * Check if the current character is escaped on the current line 578 * 579 * Results: 580 * 0 if the character is not backslash escaped, 1 otherwise 581 * 582 * Side Effects: 583 * None 584 *---------------------------------------------------------------------- 585 */ 586 static int 587 ParseIsEscaped(const char *line, const char *c) 588 { 589 int active = 0; 590 for (;;) { 591 if (line == c) 592 return active; 593 if (*--c != '\\') 594 return active; 595 active = !active; 596 } 597 } 598 599 /*- 600 *---------------------------------------------------------------------- 601 * ParseFindKeyword -- 602 * Look in the table of keywords for one matching the given string. 603 * 604 * Input: 605 * str String to find 606 * 607 * Results: 608 * The index of the keyword, or -1 if it isn't there. 609 * 610 * Side Effects: 611 * None 612 *---------------------------------------------------------------------- 613 */ 614 static int 615 ParseFindKeyword(const char *str) 616 { 617 int start, end, cur; 618 int diff; 619 620 start = 0; 621 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 622 623 do { 624 cur = start + ((end - start) / 2); 625 diff = strcmp(str, parseKeywords[cur].name); 626 627 if (diff == 0) { 628 return (cur); 629 } else if (diff < 0) { 630 end = cur - 1; 631 } else { 632 start = cur + 1; 633 } 634 } while (start <= end); 635 return (-1); 636 } 637 638 /*- 639 * ParseVErrorInternal -- 640 * Error message abort function for parsing. Prints out the context 641 * of the error (line number and file) as well as the message with 642 * two optional arguments. 643 * 644 * Results: 645 * None 646 * 647 * Side Effects: 648 * "fatals" is incremented if the level is PARSE_FATAL. 649 */ 650 /* VARARGS */ 651 static void 652 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 653 const char *fmt, va_list ap) 654 { 655 static Boolean fatal_warning_error_printed = FALSE; 656 657 (void)fprintf(f, "%s: ", progname); 658 659 if (cfname != NULL) { 660 (void)fprintf(f, "\""); 661 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 662 char *cp; 663 const char *dir; 664 665 /* 666 * Nothing is more annoying than not knowing 667 * which Makefile is the culprit. 668 */ 669 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 670 if (dir == NULL || *dir == '\0' || 671 (*dir == '.' && dir[1] == '\0')) 672 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 673 if (dir == NULL) 674 dir = "."; 675 676 (void)fprintf(f, "%s/%s", dir, cfname); 677 } else 678 (void)fprintf(f, "%s", cfname); 679 680 (void)fprintf(f, "\" line %d: ", (int)clineno); 681 } 682 if (type == PARSE_WARNING) 683 (void)fprintf(f, "warning: "); 684 (void)vfprintf(f, fmt, ap); 685 (void)fprintf(f, "\n"); 686 (void)fflush(f); 687 if (type == PARSE_FATAL || parseWarnFatal) 688 fatals += 1; 689 if (parseWarnFatal && !fatal_warning_error_printed) { 690 Error("parsing warnings being treated as errors"); 691 fatal_warning_error_printed = TRUE; 692 } 693 } 694 695 /*- 696 * ParseErrorInternal -- 697 * Error function 698 * 699 * Results: 700 * None 701 * 702 * Side Effects: 703 * None 704 */ 705 /* VARARGS */ 706 static void 707 ParseErrorInternal(const char *cfname, size_t clineno, int type, 708 const char *fmt, ...) 709 { 710 va_list ap; 711 712 va_start(ap, fmt); 713 (void)fflush(stdout); 714 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 715 va_end(ap); 716 717 if (debug_file != stderr && debug_file != stdout) { 718 va_start(ap, fmt); 719 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 720 va_end(ap); 721 } 722 } 723 724 /*- 725 * Parse_Error -- 726 * External interface to ParseErrorInternal; uses the default filename 727 * Line number. 728 * 729 * Results: 730 * None 731 * 732 * Side Effects: 733 * None 734 */ 735 /* VARARGS */ 736 void 737 Parse_Error(int type, const char *fmt, ...) 738 { 739 va_list ap; 740 const char *fname; 741 size_t lineno; 742 743 if (curFile == NULL) { 744 fname = NULL; 745 lineno = 0; 746 } else { 747 fname = curFile->fname; 748 lineno = curFile->lineno; 749 } 750 751 va_start(ap, fmt); 752 (void)fflush(stdout); 753 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 754 va_end(ap); 755 756 if (debug_file != stderr && debug_file != stdout) { 757 va_start(ap, fmt); 758 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 759 va_end(ap); 760 } 761 } 762 763 764 /* 765 * ParseMessage 766 * Parse a .info .warning or .error directive 767 * 768 * The input is the line minus the ".". We substitute 769 * variables, print the message and exit(1) (for .error) or just print 770 * a warning if the directive is malformed. 771 */ 772 static Boolean 773 ParseMessage(char *line) 774 { 775 int mtype; 776 777 switch(*line) { 778 case 'i': 779 mtype = 0; 780 break; 781 case 'w': 782 mtype = PARSE_WARNING; 783 break; 784 case 'e': 785 mtype = PARSE_FATAL; 786 break; 787 default: 788 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 789 return FALSE; 790 } 791 792 while (isalpha((u_char)*line)) 793 line++; 794 if (!isspace((u_char)*line)) 795 return FALSE; /* not for us */ 796 while (isspace((u_char)*line)) 797 line++; 798 799 line = Var_Subst(NULL, line, VAR_CMD, 0); 800 Parse_Error(mtype, "%s", line); 801 free(line); 802 803 if (mtype == PARSE_FATAL) { 804 /* Terminate immediately. */ 805 exit(1); 806 } 807 return TRUE; 808 } 809 810 /*- 811 *--------------------------------------------------------------------- 812 * ParseLinkSrc -- 813 * Link the parent node to its new child. Used in a Lst_ForEach by 814 * ParseDoDependency. If the specType isn't 'Not', the parent 815 * isn't linked as a parent of the child. 816 * 817 * Input: 818 * pgnp The parent node 819 * cgpn The child node 820 * 821 * Results: 822 * Always = 0 823 * 824 * Side Effects: 825 * New elements are added to the parents list of cgn and the 826 * children list of cgn. the unmade field of pgn is updated 827 * to reflect the additional child. 828 *--------------------------------------------------------------------- 829 */ 830 static int 831 ParseLinkSrc(void *pgnp, void *cgnp) 832 { 833 GNode *pgn = (GNode *)pgnp; 834 GNode *cgn = (GNode *)cgnp; 835 836 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 837 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 838 (void)Lst_AtEnd(pgn->children, cgn); 839 if (specType == Not) 840 (void)Lst_AtEnd(cgn->parents, pgn); 841 pgn->unmade += 1; 842 if (DEBUG(PARSE)) { 843 fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name); 844 Targ_PrintNode(pgn, 0); 845 Targ_PrintNode(cgn, 0); 846 } 847 return (0); 848 } 849 850 /*- 851 *--------------------------------------------------------------------- 852 * ParseDoOp -- 853 * Apply the parsed operator to the given target node. Used in a 854 * Lst_ForEach call by ParseDoDependency once all targets have 855 * been found and their operator parsed. If the previous and new 856 * operators are incompatible, a major error is taken. 857 * 858 * Input: 859 * gnp The node to which the operator is to be applied 860 * opp The operator to apply 861 * 862 * Results: 863 * Always 0 864 * 865 * Side Effects: 866 * The type field of the node is altered to reflect any new bits in 867 * the op. 868 *--------------------------------------------------------------------- 869 */ 870 static int 871 ParseDoOp(void *gnp, void *opp) 872 { 873 GNode *gn = (GNode *)gnp; 874 int op = *(int *)opp; 875 /* 876 * If the dependency mask of the operator and the node don't match and 877 * the node has actually had an operator applied to it before, and 878 * the operator actually has some dependency information in it, complain. 879 */ 880 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 881 !OP_NOP(gn->type) && !OP_NOP(op)) 882 { 883 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 884 return (1); 885 } 886 887 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 888 /* 889 * If the node was the object of a :: operator, we need to create a 890 * new instance of it for the children and commands on this dependency 891 * line. The new instance is placed on the 'cohorts' list of the 892 * initial one (note the initial one is not on its own cohorts list) 893 * and the new instance is linked to all parents of the initial 894 * instance. 895 */ 896 GNode *cohort; 897 898 /* 899 * Propagate copied bits to the initial node. They'll be propagated 900 * back to the rest of the cohorts later. 901 */ 902 gn->type |= op & ~OP_OPMASK; 903 904 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 905 /* 906 * Make the cohort invisible as well to avoid duplicating it into 907 * other variables. True, parents of this target won't tend to do 908 * anything with their local variables, but better safe than 909 * sorry. (I think this is pointless now, since the relevant list 910 * traversals will no longer see this node anyway. -mycroft) 911 */ 912 cohort->type = op | OP_INVISIBLE; 913 (void)Lst_AtEnd(gn->cohorts, cohort); 914 cohort->centurion = gn; 915 gn->unmade_cohorts += 1; 916 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 917 gn->unmade_cohorts); 918 } else { 919 /* 920 * We don't want to nuke any previous flags (whatever they were) so we 921 * just OR the new operator into the old 922 */ 923 gn->type |= op; 924 } 925 926 return (0); 927 } 928 929 /*- 930 *--------------------------------------------------------------------- 931 * ParseDoSrc -- 932 * Given the name of a source, figure out if it is an attribute 933 * and apply it to the targets if it is. Else decide if there is 934 * some attribute which should be applied *to* the source because 935 * of some special target and apply it if so. Otherwise, make the 936 * source be a child of the targets in the list 'targets' 937 * 938 * Input: 939 * tOp operator (if any) from special targets 940 * src name of the source to handle 941 * 942 * Results: 943 * None 944 * 945 * Side Effects: 946 * Operator bits may be added to the list of targets or to the source. 947 * The targets may have a new source added to their lists of children. 948 *--------------------------------------------------------------------- 949 */ 950 static void 951 ParseDoSrc(int tOp, const char *src) 952 { 953 GNode *gn = NULL; 954 static int wait_number = 0; 955 char wait_src[16]; 956 957 if (*src == '.' && isupper ((unsigned char)src[1])) { 958 int keywd = ParseFindKeyword(src); 959 if (keywd != -1) { 960 int op = parseKeywords[keywd].op; 961 if (op != 0) { 962 Lst_ForEach(targets, ParseDoOp, &op); 963 return; 964 } 965 if (parseKeywords[keywd].spec == Wait) { 966 /* 967 * We add a .WAIT node in the dependency list. 968 * After any dynamic dependencies (and filename globbing) 969 * have happened, it is given a dependency on the each 970 * previous child back to and previous .WAIT node. 971 * The next child won't be scheduled until the .WAIT node 972 * is built. 973 * We give each .WAIT node a unique name (mainly for diag). 974 */ 975 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 976 gn = Targ_FindNode(wait_src, TARG_NOHASH); 977 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 978 Lst_ForEach(targets, ParseLinkSrc, gn); 979 return; 980 } 981 } 982 } 983 984 switch (specType) { 985 case Main: 986 /* 987 * If we have noted the existence of a .MAIN, it means we need 988 * to add the sources of said target to the list of things 989 * to create. The string 'src' is likely to be free, so we 990 * must make a new copy of it. Note that this will only be 991 * invoked if the user didn't specify a target on the command 992 * line. This is to allow #ifmake's to succeed, or something... 993 */ 994 (void)Lst_AtEnd(create, bmake_strdup(src)); 995 /* 996 * Add the name to the .TARGETS variable as well, so the user can 997 * employ that, if desired. 998 */ 999 Var_Append(".TARGETS", src, VAR_GLOBAL); 1000 return; 1001 1002 case Order: 1003 /* 1004 * Create proper predecessor/successor links between the previous 1005 * source and the current one. 1006 */ 1007 gn = Targ_FindNode(src, TARG_CREATE); 1008 if (predecessor != NULL) { 1009 (void)Lst_AtEnd(predecessor->order_succ, gn); 1010 (void)Lst_AtEnd(gn->order_pred, predecessor); 1011 if (DEBUG(PARSE)) { 1012 fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n", 1013 predecessor->name, gn->name); 1014 Targ_PrintNode(predecessor, 0); 1015 Targ_PrintNode(gn, 0); 1016 } 1017 } 1018 /* 1019 * The current source now becomes the predecessor for the next one. 1020 */ 1021 predecessor = gn; 1022 break; 1023 1024 default: 1025 /* 1026 * If the source is not an attribute, we need to find/create 1027 * a node for it. After that we can apply any operator to it 1028 * from a special target or link it to its parents, as 1029 * appropriate. 1030 * 1031 * In the case of a source that was the object of a :: operator, 1032 * the attribute is applied to all of its instances (as kept in 1033 * the 'cohorts' list of the node) or all the cohorts are linked 1034 * to all the targets. 1035 */ 1036 1037 /* Find/create the 'src' node and attach to all targets */ 1038 gn = Targ_FindNode(src, TARG_CREATE); 1039 if (tOp) { 1040 gn->type |= tOp; 1041 } else { 1042 Lst_ForEach(targets, ParseLinkSrc, gn); 1043 } 1044 break; 1045 } 1046 } 1047 1048 /*- 1049 *----------------------------------------------------------------------- 1050 * ParseFindMain -- 1051 * Find a real target in the list and set it to be the main one. 1052 * Called by ParseDoDependency when a main target hasn't been found 1053 * yet. 1054 * 1055 * Input: 1056 * gnp Node to examine 1057 * 1058 * Results: 1059 * 0 if main not found yet, 1 if it is. 1060 * 1061 * Side Effects: 1062 * mainNode is changed and Targ_SetMain is called. 1063 * 1064 *----------------------------------------------------------------------- 1065 */ 1066 static int 1067 ParseFindMain(void *gnp, void *dummy) 1068 { 1069 GNode *gn = (GNode *)gnp; 1070 if ((gn->type & OP_NOTARGET) == 0) { 1071 mainNode = gn; 1072 Targ_SetMain(gn); 1073 return (dummy ? 1 : 1); 1074 } else { 1075 return (dummy ? 0 : 0); 1076 } 1077 } 1078 1079 /*- 1080 *----------------------------------------------------------------------- 1081 * ParseAddDir -- 1082 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1083 * 1084 * Results: 1085 * === 0 1086 * 1087 * Side Effects: 1088 * See Dir_AddDir. 1089 * 1090 *----------------------------------------------------------------------- 1091 */ 1092 static int 1093 ParseAddDir(void *path, void *name) 1094 { 1095 (void)Dir_AddDir((Lst) path, (char *)name); 1096 return(0); 1097 } 1098 1099 /*- 1100 *----------------------------------------------------------------------- 1101 * ParseClearPath -- 1102 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1103 * 1104 * Results: 1105 * === 0 1106 * 1107 * Side Effects: 1108 * See Dir_ClearPath 1109 * 1110 *----------------------------------------------------------------------- 1111 */ 1112 static int 1113 ParseClearPath(void *path, void *dummy) 1114 { 1115 Dir_ClearPath((Lst) path); 1116 return(dummy ? 0 : 0); 1117 } 1118 1119 /*- 1120 *--------------------------------------------------------------------- 1121 * ParseDoDependency -- 1122 * Parse the dependency line in line. 1123 * 1124 * Input: 1125 * line the line to parse 1126 * 1127 * Results: 1128 * None 1129 * 1130 * Side Effects: 1131 * The nodes of the sources are linked as children to the nodes of the 1132 * targets. Some nodes may be created. 1133 * 1134 * We parse a dependency line by first extracting words from the line and 1135 * finding nodes in the list of all targets with that name. This is done 1136 * until a character is encountered which is an operator character. Currently 1137 * these are only ! and :. At this point the operator is parsed and the 1138 * pointer into the line advanced until the first source is encountered. 1139 * The parsed operator is applied to each node in the 'targets' list, 1140 * which is where the nodes found for the targets are kept, by means of 1141 * the ParseDoOp function. 1142 * The sources are read in much the same way as the targets were except 1143 * that now they are expanded using the wildcarding scheme of the C-Shell 1144 * and all instances of the resulting words in the list of all targets 1145 * are found. Each of the resulting nodes is then linked to each of the 1146 * targets as one of its children. 1147 * Certain targets are handled specially. These are the ones detailed 1148 * by the specType variable. 1149 * The storing of transformation rules is also taken care of here. 1150 * A target is recognized as a transformation rule by calling 1151 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1152 * from the suffix module via Suff_AddTransform rather than the standard 1153 * Targ_FindNode in the target module. 1154 *--------------------------------------------------------------------- 1155 */ 1156 static void 1157 ParseDoDependency(char *line) 1158 { 1159 char *cp; /* our current position */ 1160 GNode *gn = NULL; /* a general purpose temporary node */ 1161 int op; /* the operator on the line */ 1162 char savec; /* a place to save a character */ 1163 Lst paths; /* List of search paths to alter when parsing 1164 * a list of .PATH targets */ 1165 int tOp; /* operator from special target */ 1166 Lst sources; /* list of archive source names after 1167 * expansion */ 1168 Lst curTargs; /* list of target names to be found and added 1169 * to the targets list */ 1170 char *lstart = line; 1171 1172 if (DEBUG(PARSE)) 1173 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1174 tOp = 0; 1175 1176 specType = Not; 1177 paths = NULL; 1178 1179 curTargs = Lst_Init(FALSE); 1180 1181 do { 1182 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1183 !(isspace((unsigned char)*cp) || 1184 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1185 cp++) { 1186 if (*cp == '$') { 1187 /* 1188 * Must be a dynamic source (would have been expanded 1189 * otherwise), so call the Var module to parse the puppy 1190 * so we can safely advance beyond it...There should be 1191 * no errors in this, as they would have been discovered 1192 * in the initial Var_Subst and we wouldn't be here. 1193 */ 1194 int length; 1195 void *freeIt; 1196 char *result; 1197 1198 result = Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt); 1199 if (freeIt) 1200 free(freeIt); 1201 cp += length-1; 1202 } 1203 } 1204 1205 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1206 /* 1207 * Archives must be handled specially to make sure the OP_ARCHV 1208 * flag is set in their 'type' field, for one thing, and because 1209 * things like "archive(file1.o file2.o file3.o)" are permissible. 1210 * Arch_ParseArchive will set 'line' to be the first non-blank 1211 * after the archive-spec. It creates/finds nodes for the members 1212 * and places them on the given list, returning SUCCESS if all 1213 * went well and FAILURE if there was an error in the 1214 * specification. On error, line should remain untouched. 1215 */ 1216 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1217 Parse_Error(PARSE_FATAL, 1218 "Error in archive specification: \"%s\"", line); 1219 goto out; 1220 } else { 1221 continue; 1222 } 1223 } 1224 savec = *cp; 1225 1226 if (!*cp) { 1227 /* 1228 * Ending a dependency line without an operator is a Bozo 1229 * no-no. As a heuristic, this is also often triggered by 1230 * undetected conflicts from cvs/rcs merges. 1231 */ 1232 if ((strncmp(line, "<<<<<<", 6) == 0) || 1233 (strncmp(line, "======", 6) == 0) || 1234 (strncmp(line, ">>>>>>", 6) == 0)) 1235 Parse_Error(PARSE_FATAL, 1236 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1237 else 1238 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1239 : "Need an operator"); 1240 goto out; 1241 } 1242 *cp = '\0'; 1243 1244 /* 1245 * Have a word in line. See if it's a special target and set 1246 * specType to match it. 1247 */ 1248 if (*line == '.' && isupper ((unsigned char)line[1])) { 1249 /* 1250 * See if the target is a special target that must have it 1251 * or its sources handled specially. 1252 */ 1253 int keywd = ParseFindKeyword(line); 1254 if (keywd != -1) { 1255 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1256 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1257 goto out; 1258 } 1259 1260 specType = parseKeywords[keywd].spec; 1261 tOp = parseKeywords[keywd].op; 1262 1263 /* 1264 * Certain special targets have special semantics: 1265 * .PATH Have to set the dirSearchPath 1266 * variable too 1267 * .MAIN Its sources are only used if 1268 * nothing has been specified to 1269 * create. 1270 * .DEFAULT Need to create a node to hang 1271 * commands on, but we don't want 1272 * it in the graph, nor do we want 1273 * it to be the Main Target, so we 1274 * create it, set OP_NOTMAIN and 1275 * add it to the list, setting 1276 * DEFAULT to the new node for 1277 * later use. We claim the node is 1278 * A transformation rule to make 1279 * life easier later, when we'll 1280 * use Make_HandleUse to actually 1281 * apply the .DEFAULT commands. 1282 * .PHONY The list of targets 1283 * .NOPATH Don't search for file in the path 1284 * .BEGIN 1285 * .END 1286 * .ERROR 1287 * .INTERRUPT Are not to be considered the 1288 * main target. 1289 * .NOTPARALLEL Make only one target at a time. 1290 * .SINGLESHELL Create a shell for each command. 1291 * .ORDER Must set initial predecessor to NULL 1292 */ 1293 switch (specType) { 1294 case ExPath: 1295 if (paths == NULL) { 1296 paths = Lst_Init(FALSE); 1297 } 1298 (void)Lst_AtEnd(paths, dirSearchPath); 1299 break; 1300 case Main: 1301 if (!Lst_IsEmpty(create)) { 1302 specType = Not; 1303 } 1304 break; 1305 case Begin: 1306 case End: 1307 case dotError: 1308 case Interrupt: 1309 gn = Targ_FindNode(line, TARG_CREATE); 1310 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1311 (void)Lst_AtEnd(targets, gn); 1312 break; 1313 case Default: 1314 gn = Targ_NewGN(".DEFAULT"); 1315 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1316 (void)Lst_AtEnd(targets, gn); 1317 DEFAULT = gn; 1318 break; 1319 case NotParallel: 1320 maxJobs = 1; 1321 break; 1322 case SingleShell: 1323 compatMake = TRUE; 1324 break; 1325 case Order: 1326 predecessor = NULL; 1327 break; 1328 default: 1329 break; 1330 } 1331 } else if (strncmp(line, ".PATH", 5) == 0) { 1332 /* 1333 * .PATH<suffix> has to be handled specially. 1334 * Call on the suffix module to give us a path to 1335 * modify. 1336 */ 1337 Lst path; 1338 1339 specType = ExPath; 1340 path = Suff_GetPath(&line[5]); 1341 if (path == NULL) { 1342 Parse_Error(PARSE_FATAL, 1343 "Suffix '%s' not defined (yet)", 1344 &line[5]); 1345 goto out; 1346 } else { 1347 if (paths == NULL) { 1348 paths = Lst_Init(FALSE); 1349 } 1350 (void)Lst_AtEnd(paths, path); 1351 } 1352 } 1353 } 1354 1355 /* 1356 * Have word in line. Get or create its node and stick it at 1357 * the end of the targets list 1358 */ 1359 if ((specType == Not) && (*line != '\0')) { 1360 if (Dir_HasWildcards(line)) { 1361 /* 1362 * Targets are to be sought only in the current directory, 1363 * so create an empty path for the thing. Note we need to 1364 * use Dir_Destroy in the destruction of the path as the 1365 * Dir module could have added a directory to the path... 1366 */ 1367 Lst emptyPath = Lst_Init(FALSE); 1368 1369 Dir_Expand(line, emptyPath, curTargs); 1370 1371 Lst_Destroy(emptyPath, Dir_Destroy); 1372 } else { 1373 /* 1374 * No wildcards, but we want to avoid code duplication, 1375 * so create a list with the word on it. 1376 */ 1377 (void)Lst_AtEnd(curTargs, line); 1378 } 1379 1380 while(!Lst_IsEmpty(curTargs)) { 1381 char *targName = (char *)Lst_DeQueue(curTargs); 1382 1383 if (!Suff_IsTransform (targName)) { 1384 gn = Targ_FindNode(targName, TARG_CREATE); 1385 } else { 1386 gn = Suff_AddTransform(targName); 1387 } 1388 1389 (void)Lst_AtEnd(targets, gn); 1390 } 1391 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1392 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1393 } 1394 1395 *cp = savec; 1396 /* 1397 * If it is a special type and not .PATH, it's the only target we 1398 * allow on this line... 1399 */ 1400 if (specType != Not && specType != ExPath) { 1401 Boolean warning = FALSE; 1402 1403 while (*cp && (ParseIsEscaped(lstart, cp) || 1404 ((*cp != '!') && (*cp != ':')))) { 1405 if (ParseIsEscaped(lstart, cp) || 1406 (*cp != ' ' && *cp != '\t')) { 1407 warning = TRUE; 1408 } 1409 cp++; 1410 } 1411 if (warning) { 1412 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1413 } 1414 } else { 1415 while (*cp && isspace ((unsigned char)*cp)) { 1416 cp++; 1417 } 1418 } 1419 line = cp; 1420 } while (*line && (ParseIsEscaped(lstart, line) || 1421 ((*line != '!') && (*line != ':')))); 1422 1423 /* 1424 * Don't need the list of target names anymore... 1425 */ 1426 Lst_Destroy(curTargs, NULL); 1427 curTargs = NULL; 1428 1429 if (!Lst_IsEmpty(targets)) { 1430 switch(specType) { 1431 default: 1432 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1433 break; 1434 case Default: 1435 case Begin: 1436 case End: 1437 case dotError: 1438 case Interrupt: 1439 /* 1440 * These four create nodes on which to hang commands, so 1441 * targets shouldn't be empty... 1442 */ 1443 case Not: 1444 /* 1445 * Nothing special here -- targets can be empty if it wants. 1446 */ 1447 break; 1448 } 1449 } 1450 1451 /* 1452 * Have now parsed all the target names. Must parse the operator next. The 1453 * result is left in op . 1454 */ 1455 if (*cp == '!') { 1456 op = OP_FORCE; 1457 } else if (*cp == ':') { 1458 if (cp[1] == ':') { 1459 op = OP_DOUBLEDEP; 1460 cp++; 1461 } else { 1462 op = OP_DEPENDS; 1463 } 1464 } else { 1465 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1466 : "Missing dependency operator"); 1467 goto out; 1468 } 1469 1470 cp++; /* Advance beyond operator */ 1471 1472 Lst_ForEach(targets, ParseDoOp, &op); 1473 1474 /* 1475 * Get to the first source 1476 */ 1477 while (*cp && isspace ((unsigned char)*cp)) { 1478 cp++; 1479 } 1480 line = cp; 1481 1482 /* 1483 * Several special targets take different actions if present with no 1484 * sources: 1485 * a .SUFFIXES line with no sources clears out all old suffixes 1486 * a .PRECIOUS line makes all targets precious 1487 * a .IGNORE line ignores errors for all targets 1488 * a .SILENT line creates silence when making all targets 1489 * a .PATH removes all directories from the search path(s). 1490 */ 1491 if (!*line) { 1492 switch (specType) { 1493 case Suffixes: 1494 Suff_ClearSuffixes(); 1495 break; 1496 case Precious: 1497 allPrecious = TRUE; 1498 break; 1499 case Ignore: 1500 ignoreErrors = TRUE; 1501 break; 1502 case Silent: 1503 beSilent = TRUE; 1504 break; 1505 case ExPath: 1506 Lst_ForEach(paths, ParseClearPath, NULL); 1507 Dir_SetPATH(); 1508 break; 1509 #ifdef POSIX 1510 case Posix: 1511 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1512 break; 1513 #endif 1514 default: 1515 break; 1516 } 1517 } else if (specType == MFlags) { 1518 /* 1519 * Call on functions in main.c to deal with these arguments and 1520 * set the initial character to a null-character so the loop to 1521 * get sources won't get anything 1522 */ 1523 Main_ParseArgLine(line); 1524 *line = '\0'; 1525 } else if (specType == ExShell) { 1526 if (Job_ParseShell(line) != SUCCESS) { 1527 Parse_Error(PARSE_FATAL, "improper shell specification"); 1528 goto out; 1529 } 1530 *line = '\0'; 1531 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1532 *line = '\0'; 1533 } 1534 1535 /* 1536 * NOW GO FOR THE SOURCES 1537 */ 1538 if ((specType == Suffixes) || (specType == ExPath) || 1539 (specType == Includes) || (specType == Libs) || 1540 (specType == Null) || (specType == ExObjdir)) 1541 { 1542 while (*line) { 1543 /* 1544 * If the target was one that doesn't take files as its sources 1545 * but takes something like suffixes, we take each 1546 * space-separated word on the line as a something and deal 1547 * with it accordingly. 1548 * 1549 * If the target was .SUFFIXES, we take each source as a 1550 * suffix and add it to the list of suffixes maintained by the 1551 * Suff module. 1552 * 1553 * If the target was a .PATH, we add the source as a directory 1554 * to search on the search path. 1555 * 1556 * If it was .INCLUDES, the source is taken to be the suffix of 1557 * files which will be #included and whose search path should 1558 * be present in the .INCLUDES variable. 1559 * 1560 * If it was .LIBS, the source is taken to be the suffix of 1561 * files which are considered libraries and whose search path 1562 * should be present in the .LIBS variable. 1563 * 1564 * If it was .NULL, the source is the suffix to use when a file 1565 * has no valid suffix. 1566 * 1567 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1568 * and will cause make to do a new chdir to that path. 1569 */ 1570 while (*cp && !isspace ((unsigned char)*cp)) { 1571 cp++; 1572 } 1573 savec = *cp; 1574 *cp = '\0'; 1575 switch (specType) { 1576 case Suffixes: 1577 Suff_AddSuffix(line, &mainNode); 1578 break; 1579 case ExPath: 1580 Lst_ForEach(paths, ParseAddDir, line); 1581 break; 1582 case Includes: 1583 Suff_AddInclude(line); 1584 break; 1585 case Libs: 1586 Suff_AddLib(line); 1587 break; 1588 case Null: 1589 Suff_SetNull(line); 1590 break; 1591 case ExObjdir: 1592 Main_SetObjdir(line); 1593 break; 1594 default: 1595 break; 1596 } 1597 *cp = savec; 1598 if (savec != '\0') { 1599 cp++; 1600 } 1601 while (*cp && isspace ((unsigned char)*cp)) { 1602 cp++; 1603 } 1604 line = cp; 1605 } 1606 if (paths) { 1607 Lst_Destroy(paths, NULL); 1608 } 1609 if (specType == ExPath) 1610 Dir_SetPATH(); 1611 } else { 1612 while (*line) { 1613 /* 1614 * The targets take real sources, so we must beware of archive 1615 * specifications (i.e. things with left parentheses in them) 1616 * and handle them accordingly. 1617 */ 1618 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1619 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1620 /* 1621 * Only stop for a left parenthesis if it isn't at the 1622 * start of a word (that'll be for variable changes 1623 * later) and isn't preceded by a dollar sign (a dynamic 1624 * source). 1625 */ 1626 break; 1627 } 1628 } 1629 1630 if (*cp == LPAREN) { 1631 sources = Lst_Init(FALSE); 1632 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1633 Parse_Error(PARSE_FATAL, 1634 "Error in source archive spec \"%s\"", line); 1635 goto out; 1636 } 1637 1638 while (!Lst_IsEmpty (sources)) { 1639 gn = (GNode *)Lst_DeQueue(sources); 1640 ParseDoSrc(tOp, gn->name); 1641 } 1642 Lst_Destroy(sources, NULL); 1643 cp = line; 1644 } else { 1645 if (*cp) { 1646 *cp = '\0'; 1647 cp += 1; 1648 } 1649 1650 ParseDoSrc(tOp, line); 1651 } 1652 while (*cp && isspace ((unsigned char)*cp)) { 1653 cp++; 1654 } 1655 line = cp; 1656 } 1657 } 1658 1659 if (mainNode == NULL) { 1660 /* 1661 * If we have yet to decide on a main target to make, in the 1662 * absence of any user input, we want the first target on 1663 * the first dependency line that is actually a real target 1664 * (i.e. isn't a .USE or .EXEC rule) to be made. 1665 */ 1666 Lst_ForEach(targets, ParseFindMain, NULL); 1667 } 1668 1669 out: 1670 if (curTargs) 1671 Lst_Destroy(curTargs, NULL); 1672 } 1673 1674 /*- 1675 *--------------------------------------------------------------------- 1676 * Parse_IsVar -- 1677 * Return TRUE if the passed line is a variable assignment. A variable 1678 * assignment consists of a single word followed by optional whitespace 1679 * followed by either a += or an = operator. 1680 * This function is used both by the Parse_File function and main when 1681 * parsing the command-line arguments. 1682 * 1683 * Input: 1684 * line the line to check 1685 * 1686 * Results: 1687 * TRUE if it is. FALSE if it ain't 1688 * 1689 * Side Effects: 1690 * none 1691 *--------------------------------------------------------------------- 1692 */ 1693 Boolean 1694 Parse_IsVar(char *line) 1695 { 1696 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1697 char ch; 1698 int level = 0; 1699 #define ISEQOPERATOR(c) \ 1700 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1701 1702 /* 1703 * Skip to variable name 1704 */ 1705 for (;(*line == ' ') || (*line == '\t'); line++) 1706 continue; 1707 1708 /* Scan for one of the assignment operators outside a variable expansion */ 1709 while ((ch = *line++) != 0) { 1710 if (ch == '(' || ch == '{') { 1711 level++; 1712 continue; 1713 } 1714 if (ch == ')' || ch == '}') { 1715 level--; 1716 continue; 1717 } 1718 if (level != 0) 1719 continue; 1720 while (ch == ' ' || ch == '\t') { 1721 ch = *line++; 1722 wasSpace = TRUE; 1723 } 1724 if (ch == '=') 1725 return TRUE; 1726 if (*line == '=' && ISEQOPERATOR(ch)) 1727 return TRUE; 1728 if (wasSpace) 1729 return FALSE; 1730 } 1731 1732 return FALSE; 1733 } 1734 1735 /*- 1736 *--------------------------------------------------------------------- 1737 * Parse_DoVar -- 1738 * Take the variable assignment in the passed line and do it in the 1739 * global context. 1740 * 1741 * Note: There is a lexical ambiguity with assignment modifier characters 1742 * in variable names. This routine interprets the character before the = 1743 * as a modifier. Therefore, an assignment like 1744 * C++=/usr/bin/CC 1745 * is interpreted as "C+ +=" instead of "C++ =". 1746 * 1747 * Input: 1748 * line a line guaranteed to be a variable assignment. 1749 * This reduces error checks 1750 * ctxt Context in which to do the assignment 1751 * 1752 * Results: 1753 * none 1754 * 1755 * Side Effects: 1756 * the variable structure of the given variable name is altered in the 1757 * global context. 1758 *--------------------------------------------------------------------- 1759 */ 1760 void 1761 Parse_DoVar(char *line, GNode *ctxt) 1762 { 1763 char *cp; /* pointer into line */ 1764 enum { 1765 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1766 } type; /* Type of assignment */ 1767 char *opc; /* ptr to operator character to 1768 * null-terminate the variable name */ 1769 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1770 * i.e. if any variable expansion was 1771 * performed */ 1772 int depth; 1773 1774 /* 1775 * Skip to variable name 1776 */ 1777 while ((*line == ' ') || (*line == '\t')) { 1778 line++; 1779 } 1780 1781 /* 1782 * Skip to operator character, nulling out whitespace as we go 1783 * XXX Rather than counting () and {} we should look for $ and 1784 * then expand the variable. 1785 */ 1786 for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) { 1787 if (*cp == '(' || *cp == '{') { 1788 depth++; 1789 continue; 1790 } 1791 if (*cp == ')' || *cp == '}') { 1792 depth--; 1793 continue; 1794 } 1795 if (depth == 0 && isspace ((unsigned char)*cp)) { 1796 *cp = '\0'; 1797 } 1798 } 1799 opc = cp-1; /* operator is the previous character */ 1800 *cp++ = '\0'; /* nuke the = */ 1801 1802 /* 1803 * Check operator type 1804 */ 1805 switch (*opc) { 1806 case '+': 1807 type = VAR_APPEND; 1808 *opc = '\0'; 1809 break; 1810 1811 case '?': 1812 /* 1813 * If the variable already has a value, we don't do anything. 1814 */ 1815 *opc = '\0'; 1816 if (Var_Exists(line, ctxt)) { 1817 return; 1818 } else { 1819 type = VAR_NORMAL; 1820 } 1821 break; 1822 1823 case ':': 1824 type = VAR_SUBST; 1825 *opc = '\0'; 1826 break; 1827 1828 case '!': 1829 type = VAR_SHELL; 1830 *opc = '\0'; 1831 break; 1832 1833 default: 1834 #ifdef SUNSHCMD 1835 while (opc > line && *opc != ':') 1836 opc--; 1837 1838 if (strncmp(opc, ":sh", 3) == 0) { 1839 type = VAR_SHELL; 1840 *opc = '\0'; 1841 break; 1842 } 1843 #endif 1844 type = VAR_NORMAL; 1845 break; 1846 } 1847 1848 while (isspace ((unsigned char)*cp)) { 1849 cp++; 1850 } 1851 1852 if (type == VAR_APPEND) { 1853 Var_Append(line, cp, ctxt); 1854 } else if (type == VAR_SUBST) { 1855 /* 1856 * Allow variables in the old value to be undefined, but leave their 1857 * invocation alone -- this is done by forcing oldVars to be false. 1858 * XXX: This can cause recursive variables, but that's not hard to do, 1859 * and this allows someone to do something like 1860 * 1861 * CFLAGS = $(.INCLUDES) 1862 * CFLAGS := -I.. $(CFLAGS) 1863 * 1864 * And not get an error. 1865 */ 1866 Boolean oldOldVars = oldVars; 1867 1868 oldVars = FALSE; 1869 1870 /* 1871 * make sure that we set the variable the first time to nothing 1872 * so that it gets substituted! 1873 */ 1874 if (!Var_Exists(line, ctxt)) 1875 Var_Set(line, "", ctxt, 0); 1876 1877 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1878 oldVars = oldOldVars; 1879 freeCp = TRUE; 1880 1881 Var_Set(line, cp, ctxt, 0); 1882 } else if (type == VAR_SHELL) { 1883 char *res; 1884 const char *error; 1885 1886 if (strchr(cp, '$') != NULL) { 1887 /* 1888 * There's a dollar sign in the command, so perform variable 1889 * expansion on the whole thing. The resulting string will need 1890 * freeing when we're done, so set freeCmd to TRUE. 1891 */ 1892 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1893 freeCp = TRUE; 1894 } 1895 1896 res = Cmd_Exec(cp, &error); 1897 Var_Set(line, res, ctxt, 0); 1898 free(res); 1899 1900 if (error) 1901 Parse_Error(PARSE_WARNING, error, cp); 1902 } else { 1903 /* 1904 * Normal assignment -- just do it. 1905 */ 1906 Var_Set(line, cp, ctxt, 0); 1907 } 1908 if (strcmp(line, MAKEOVERRIDES) == 0) 1909 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1910 else if (strcmp(line, ".CURDIR") == 0) { 1911 /* 1912 * Somone is being (too?) clever... 1913 * Let's pretend they know what they are doing and 1914 * re-initialize the 'cur' Path. 1915 */ 1916 Dir_InitCur(cp); 1917 Dir_SetPATH(); 1918 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 1919 Job_SetPrefix(); 1920 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 1921 Var_Export(cp, 0); 1922 } 1923 if (freeCp) 1924 free(cp); 1925 } 1926 1927 1928 /*- 1929 * ParseAddCmd -- 1930 * Lst_ForEach function to add a command line to all targets 1931 * 1932 * Input: 1933 * gnp the node to which the command is to be added 1934 * cmd the command to add 1935 * 1936 * Results: 1937 * Always 0 1938 * 1939 * Side Effects: 1940 * A new element is added to the commands list of the node. 1941 */ 1942 static int 1943 ParseAddCmd(void *gnp, void *cmd) 1944 { 1945 GNode *gn = (GNode *)gnp; 1946 1947 /* Add to last (ie current) cohort for :: targets */ 1948 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 1949 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 1950 1951 /* if target already supplied, ignore commands */ 1952 if (!(gn->type & OP_HAS_COMMANDS)) { 1953 (void)Lst_AtEnd(gn->commands, cmd); 1954 ParseMark(gn); 1955 } else { 1956 #ifdef notyet 1957 /* XXX: We cannot do this until we fix the tree */ 1958 (void)Lst_AtEnd(gn->commands, cmd); 1959 Parse_Error(PARSE_WARNING, 1960 "overriding commands for target \"%s\"; " 1961 "previous commands defined at %s: %d ignored", 1962 gn->name, gn->fname, gn->lineno); 1963 #else 1964 Parse_Error(PARSE_WARNING, 1965 "duplicate script for target \"%s\" ignored", 1966 gn->name); 1967 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 1968 "using previous script for \"%s\" defined here", 1969 gn->name); 1970 #endif 1971 } 1972 return(0); 1973 } 1974 1975 /*- 1976 *----------------------------------------------------------------------- 1977 * ParseHasCommands -- 1978 * Callback procedure for Parse_File when destroying the list of 1979 * targets on the last dependency line. Marks a target as already 1980 * having commands if it does, to keep from having shell commands 1981 * on multiple dependency lines. 1982 * 1983 * Input: 1984 * gnp Node to examine 1985 * 1986 * Results: 1987 * None 1988 * 1989 * Side Effects: 1990 * OP_HAS_COMMANDS may be set for the target. 1991 * 1992 *----------------------------------------------------------------------- 1993 */ 1994 static void 1995 ParseHasCommands(void *gnp) 1996 { 1997 GNode *gn = (GNode *)gnp; 1998 if (!Lst_IsEmpty(gn->commands)) { 1999 gn->type |= OP_HAS_COMMANDS; 2000 } 2001 } 2002 2003 /*- 2004 *----------------------------------------------------------------------- 2005 * Parse_AddIncludeDir -- 2006 * Add a directory to the path searched for included makefiles 2007 * bracketed by double-quotes. Used by functions in main.c 2008 * 2009 * Input: 2010 * dir The name of the directory to add 2011 * 2012 * Results: 2013 * None. 2014 * 2015 * Side Effects: 2016 * The directory is appended to the list. 2017 * 2018 *----------------------------------------------------------------------- 2019 */ 2020 void 2021 Parse_AddIncludeDir(char *dir) 2022 { 2023 (void)Dir_AddDir(parseIncPath, dir); 2024 } 2025 2026 /*- 2027 *--------------------------------------------------------------------- 2028 * ParseDoInclude -- 2029 * Push to another file. 2030 * 2031 * The input is the line minus the `.'. A file spec is a string 2032 * enclosed in <> or "". The former is looked for only in sysIncPath. 2033 * The latter in . and the directories specified by -I command line 2034 * options 2035 * 2036 * Results: 2037 * None 2038 * 2039 * Side Effects: 2040 * A structure is added to the includes Lst and readProc, lineno, 2041 * fname and curFILE are altered for the new file 2042 *--------------------------------------------------------------------- 2043 */ 2044 2045 static void 2046 Parse_include_file(char *file, Boolean isSystem, int silent) 2047 { 2048 struct loadedfile *lf; 2049 char *fullname; /* full pathname of file */ 2050 char *newName; 2051 char *prefEnd, *incdir; 2052 int fd; 2053 int i; 2054 2055 /* 2056 * Now we know the file's name and its search path, we attempt to 2057 * find the durn thing. A return of NULL indicates the file don't 2058 * exist. 2059 */ 2060 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2061 2062 if (fullname == NULL && !isSystem) { 2063 /* 2064 * Include files contained in double-quotes are first searched for 2065 * relative to the including file's location. We don't want to 2066 * cd there, of course, so we just tack on the old file's 2067 * leading path components and call Dir_FindFile to see if 2068 * we can locate the beast. 2069 */ 2070 2071 incdir = bmake_strdup(curFile->fname); 2072 prefEnd = strrchr(incdir, '/'); 2073 if (prefEnd != NULL) { 2074 *prefEnd = '\0'; 2075 /* Now do lexical processing of leading "../" on the filename */ 2076 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2077 prefEnd = strrchr(incdir + 1, '/'); 2078 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2079 break; 2080 *prefEnd = '\0'; 2081 } 2082 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2083 fullname = Dir_FindFile(newName, parseIncPath); 2084 if (fullname == NULL) 2085 fullname = Dir_FindFile(newName, dirSearchPath); 2086 free(newName); 2087 } 2088 free(incdir); 2089 2090 if (fullname == NULL) { 2091 /* 2092 * Makefile wasn't found in same directory as included makefile. 2093 * Search for it first on the -I search path, 2094 * then on the .PATH search path, if not found in a -I directory. 2095 * If we have a suffix specific path we should use that. 2096 */ 2097 char *suff; 2098 Lst suffPath = NULL; 2099 2100 if ((suff = strrchr(file, '.'))) { 2101 suffPath = Suff_GetPath(suff); 2102 if (suffPath != NULL) { 2103 fullname = Dir_FindFile(file, suffPath); 2104 } 2105 } 2106 if (fullname == NULL) { 2107 fullname = Dir_FindFile(file, parseIncPath); 2108 if (fullname == NULL) { 2109 fullname = Dir_FindFile(file, dirSearchPath); 2110 } 2111 } 2112 } 2113 } 2114 2115 /* Looking for a system file or file still not found */ 2116 if (fullname == NULL) { 2117 /* 2118 * Look for it on the system path 2119 */ 2120 fullname = Dir_FindFile(file, 2121 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2122 } 2123 2124 if (fullname == NULL) { 2125 if (!silent) 2126 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2127 return; 2128 } 2129 2130 /* Actually open the file... */ 2131 fd = open(fullname, O_RDONLY); 2132 if (fd == -1) { 2133 if (!silent) 2134 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2135 free(fullname); 2136 return; 2137 } 2138 2139 /* load it */ 2140 lf = loadfile(fullname, fd); 2141 2142 /* Start reading from this file next */ 2143 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2144 curFile->lf = lf; 2145 } 2146 2147 static void 2148 ParseDoInclude(char *line) 2149 { 2150 char endc; /* the character which ends the file spec */ 2151 char *cp; /* current position in file spec */ 2152 int silent = (*line != 'i') ? 1 : 0; 2153 char *file = &line[7 + silent]; 2154 2155 /* Skip to delimiter character so we know where to look */ 2156 while (*file == ' ' || *file == '\t') 2157 file++; 2158 2159 if (*file != '"' && *file != '<') { 2160 Parse_Error(PARSE_FATAL, 2161 ".include filename must be delimited by '\"' or '<'"); 2162 return; 2163 } 2164 2165 /* 2166 * Set the search path on which to find the include file based on the 2167 * characters which bracket its name. Angle-brackets imply it's 2168 * a system Makefile while double-quotes imply it's a user makefile 2169 */ 2170 if (*file == '<') { 2171 endc = '>'; 2172 } else { 2173 endc = '"'; 2174 } 2175 2176 /* Skip to matching delimiter */ 2177 for (cp = ++file; *cp && *cp != endc; cp++) 2178 continue; 2179 2180 if (*cp != endc) { 2181 Parse_Error(PARSE_FATAL, 2182 "Unclosed %cinclude filename. '%c' expected", 2183 '.', endc); 2184 return; 2185 } 2186 *cp = '\0'; 2187 2188 /* 2189 * Substitute for any variables in the file name before trying to 2190 * find the thing. 2191 */ 2192 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2193 2194 Parse_include_file(file, endc == '>', silent); 2195 free(file); 2196 } 2197 2198 2199 /*- 2200 *--------------------------------------------------------------------- 2201 * ParseSetParseFile -- 2202 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2203 * basename of the given filename 2204 * 2205 * Results: 2206 * None 2207 * 2208 * Side Effects: 2209 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2210 * dirname and basename of the given filename. 2211 *--------------------------------------------------------------------- 2212 */ 2213 static void 2214 ParseSetParseFile(const char *filename) 2215 { 2216 char *slash, *dirname; 2217 const char *pd, *pf; 2218 int len; 2219 2220 slash = strrchr(filename, '/'); 2221 if (slash == NULL) { 2222 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2223 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2224 dirname= NULL; 2225 } else { 2226 len = slash - filename; 2227 dirname = bmake_malloc(len + 1); 2228 memcpy(dirname, filename, len); 2229 dirname[len] = '\0'; 2230 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2231 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2232 } 2233 if (DEBUG(PARSE)) 2234 fprintf(debug_file, "ParseSetParseFile: ${.PARSEDIR} = `%s' " 2235 "${.PARSEFILE} = `%s'\n", pd, pf); 2236 free(dirname); 2237 } 2238 2239 /* 2240 * Track the makefiles we read - so makefiles can 2241 * set dependencies on them. 2242 * Avoid adding anything more than once. 2243 */ 2244 2245 static void 2246 ParseTrackInput(const char *name) 2247 { 2248 char *old; 2249 char *fp = NULL; 2250 size_t name_len = strlen(name); 2251 2252 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2253 if (old) { 2254 /* does it contain name? */ 2255 for (; old != NULL; old = strchr(old, ' ')) { 2256 if (*old == ' ') 2257 old++; 2258 if (memcmp(old, name, name_len) == 0 2259 && (old[name_len] == 0 || old[name_len] == ' ')) 2260 goto cleanup; 2261 } 2262 } 2263 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2264 cleanup: 2265 if (fp) { 2266 free(fp); 2267 } 2268 } 2269 2270 2271 /*- 2272 *--------------------------------------------------------------------- 2273 * Parse_setInput -- 2274 * Start Parsing from the given source 2275 * 2276 * Results: 2277 * None 2278 * 2279 * Side Effects: 2280 * A structure is added to the includes Lst and readProc, lineno, 2281 * fname and curFile are altered for the new file 2282 *--------------------------------------------------------------------- 2283 */ 2284 void 2285 Parse_SetInput(const char *name, int line, int fd, 2286 char *(*nextbuf)(void *, size_t *), void *arg) 2287 { 2288 char *buf; 2289 size_t len; 2290 2291 if (name == NULL) 2292 name = curFile->fname; 2293 else 2294 ParseTrackInput(name); 2295 2296 if (DEBUG(PARSE)) 2297 fprintf(debug_file, "Parse_SetInput: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2298 name, line, fd, nextbuf, arg); 2299 2300 if (fd == -1 && nextbuf == NULL) 2301 /* sanity */ 2302 return; 2303 2304 if (curFile != NULL) 2305 /* Save exiting file info */ 2306 Lst_AtFront(includes, curFile); 2307 2308 /* Allocate and fill in new structure */ 2309 curFile = bmake_malloc(sizeof *curFile); 2310 2311 /* 2312 * Once the previous state has been saved, we can get down to reading 2313 * the new file. We set up the name of the file to be the absolute 2314 * name of the include file so error messages refer to the right 2315 * place. 2316 */ 2317 curFile->fname = name; 2318 curFile->lineno = line; 2319 curFile->first_lineno = line; 2320 curFile->nextbuf = nextbuf; 2321 curFile->nextbuf_arg = arg; 2322 curFile->lf = NULL; 2323 2324 assert(nextbuf != NULL); 2325 2326 /* Get first block of input data */ 2327 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2328 if (buf == NULL) { 2329 /* Was all a waste of time ... */ 2330 free(curFile); 2331 return; 2332 } 2333 curFile->P_str = buf; 2334 curFile->P_ptr = buf; 2335 curFile->P_end = buf+len; 2336 2337 curFile->cond_depth = Cond_save_depth(); 2338 ParseSetParseFile(name); 2339 } 2340 2341 #ifdef SYSVINCLUDE 2342 /*- 2343 *--------------------------------------------------------------------- 2344 * ParseTraditionalInclude -- 2345 * Push to another file. 2346 * 2347 * The input is the current line. The file name(s) are 2348 * following the "include". 2349 * 2350 * Results: 2351 * None 2352 * 2353 * Side Effects: 2354 * A structure is added to the includes Lst and readProc, lineno, 2355 * fname and curFILE are altered for the new file 2356 *--------------------------------------------------------------------- 2357 */ 2358 static void 2359 ParseTraditionalInclude(char *line) 2360 { 2361 char *cp; /* current position in file spec */ 2362 int done = 0; 2363 int silent = (line[0] != 'i') ? 1 : 0; 2364 char *file = &line[silent + 7]; 2365 char *all_files; 2366 2367 if (DEBUG(PARSE)) { 2368 fprintf(debug_file, "ParseTraditionalInclude: %s\n", file); 2369 } 2370 2371 /* 2372 * Skip over whitespace 2373 */ 2374 while (isspace((unsigned char)*file)) 2375 file++; 2376 2377 /* 2378 * Substitute for any variables in the file name before trying to 2379 * find the thing. 2380 */ 2381 all_files = Var_Subst(NULL, file, VAR_CMD, FALSE); 2382 2383 if (*file == '\0') { 2384 Parse_Error(PARSE_FATAL, 2385 "Filename missing from \"include\""); 2386 return; 2387 } 2388 2389 for (file = all_files; !done; file = cp + 1) { 2390 /* Skip to end of line or next whitespace */ 2391 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2392 continue; 2393 2394 if (*cp) 2395 *cp = '\0'; 2396 else 2397 done = 1; 2398 2399 Parse_include_file(file, FALSE, silent); 2400 } 2401 free(all_files); 2402 } 2403 #endif 2404 2405 /*- 2406 *--------------------------------------------------------------------- 2407 * ParseEOF -- 2408 * Called when EOF is reached in the current file. If we were reading 2409 * an include file, the includes stack is popped and things set up 2410 * to go back to reading the previous file at the previous location. 2411 * 2412 * Results: 2413 * CONTINUE if there's more to do. DONE if not. 2414 * 2415 * Side Effects: 2416 * The old curFILE, is closed. The includes list is shortened. 2417 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2418 *--------------------------------------------------------------------- 2419 */ 2420 static int 2421 ParseEOF(void) 2422 { 2423 char *ptr; 2424 size_t len; 2425 2426 assert(curFile->nextbuf != NULL); 2427 2428 /* get next input buffer, if any */ 2429 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2430 curFile->P_ptr = ptr; 2431 curFile->P_str = ptr; 2432 curFile->P_end = ptr + len; 2433 curFile->lineno = curFile->first_lineno; 2434 if (ptr != NULL) { 2435 /* Iterate again */ 2436 return CONTINUE; 2437 } 2438 2439 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2440 Cond_restore_depth(curFile->cond_depth); 2441 2442 if (curFile->lf != NULL) { 2443 loadedfile_destroy(curFile->lf); 2444 curFile->lf = NULL; 2445 } 2446 2447 /* Dispose of curFile info */ 2448 /* Leak curFile->fname because all the gnodes have pointers to it */ 2449 free(curFile->P_str); 2450 free(curFile); 2451 2452 curFile = Lst_DeQueue(includes); 2453 2454 if (curFile == NULL) { 2455 /* We've run out of input */ 2456 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2457 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2458 return DONE; 2459 } 2460 2461 if (DEBUG(PARSE)) 2462 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2463 curFile->fname, curFile->lineno); 2464 2465 /* Restore the PARSEDIR/PARSEFILE variables */ 2466 ParseSetParseFile(curFile->fname); 2467 return (CONTINUE); 2468 } 2469 2470 #define PARSE_RAW 1 2471 #define PARSE_SKIP 2 2472 2473 static char * 2474 ParseGetLine(int flags, int *length) 2475 { 2476 IFile *cf = curFile; 2477 char *ptr; 2478 char ch; 2479 char *line; 2480 char *line_end; 2481 char *escaped; 2482 char *comment; 2483 char *tp; 2484 2485 /* Loop through blank lines and comment lines */ 2486 for (;;) { 2487 cf->lineno++; 2488 line = cf->P_ptr; 2489 ptr = line; 2490 line_end = line; 2491 escaped = NULL; 2492 comment = NULL; 2493 for (;;) { 2494 if (cf->P_end != NULL && ptr == cf->P_end) { 2495 /* end of buffer */ 2496 ch = 0; 2497 break; 2498 } 2499 ch = *ptr; 2500 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2501 if (cf->P_end == NULL) 2502 /* End of string (aka for loop) data */ 2503 break; 2504 if (cf->nextbuf != NULL) { 2505 /* 2506 * End of this buffer; return EOF and outer logic 2507 * will get the next one. (eww) 2508 */ 2509 break; 2510 } 2511 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2512 return NULL; 2513 } 2514 2515 if (ch == '\\') { 2516 /* Don't treat next character as special, remember first one */ 2517 if (escaped == NULL) 2518 escaped = ptr; 2519 if (ptr[1] == '\n') 2520 cf->lineno++; 2521 ptr += 2; 2522 line_end = ptr; 2523 continue; 2524 } 2525 if (ch == '#' && comment == NULL) { 2526 /* Remember first '#' for comment stripping */ 2527 comment = line_end; 2528 } 2529 ptr++; 2530 if (ch == '\n') 2531 break; 2532 if (!isspace((unsigned char)ch)) 2533 /* We are not interested in trailing whitespace */ 2534 line_end = ptr; 2535 } 2536 2537 /* Save next 'to be processed' location */ 2538 cf->P_ptr = ptr; 2539 2540 /* Check we have a non-comment, non-blank line */ 2541 if (line_end == line || comment == line) { 2542 if (ch == 0) 2543 /* At end of file */ 2544 return NULL; 2545 /* Parse another line */ 2546 continue; 2547 } 2548 2549 /* We now have a line of data */ 2550 *line_end = 0; 2551 2552 if (flags & PARSE_RAW) { 2553 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2554 *length = line_end - line; 2555 return line; 2556 } 2557 2558 if (flags & PARSE_SKIP) { 2559 /* Completely ignore non-directives */ 2560 if (line[0] != '.') 2561 continue; 2562 /* We could do more of the .else/.elif/.endif checks here */ 2563 } 2564 break; 2565 } 2566 2567 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2568 if (comment != NULL && line[0] != '\t') { 2569 line_end = comment; 2570 *line_end = 0; 2571 } 2572 2573 /* If we didn't see a '\\' then the in-situ data is fine */ 2574 if (escaped == NULL) { 2575 *length = line_end - line; 2576 return line; 2577 } 2578 2579 /* Remove escapes from '\n' and '#' */ 2580 tp = ptr = escaped; 2581 escaped = line; 2582 for (; ; *tp++ = ch) { 2583 ch = *ptr++; 2584 if (ch != '\\') { 2585 if (ch == 0) 2586 break; 2587 continue; 2588 } 2589 2590 ch = *ptr++; 2591 if (ch == 0) { 2592 /* Delete '\\' at end of buffer */ 2593 tp--; 2594 break; 2595 } 2596 2597 if (ch == '#' && line[0] != '\t') 2598 /* Delete '\\' from before '#' on non-command lines */ 2599 continue; 2600 2601 if (ch != '\n') { 2602 /* Leave '\\' in buffer for later */ 2603 *tp++ = '\\'; 2604 /* Make sure we don't delete an escaped ' ' from the line end */ 2605 escaped = tp + 1; 2606 continue; 2607 } 2608 2609 /* Escaped '\n' replace following whitespace with a single ' ' */ 2610 while (ptr[0] == ' ' || ptr[0] == '\t') 2611 ptr++; 2612 ch = ' '; 2613 } 2614 2615 /* Delete any trailing spaces - eg from empty continuations */ 2616 while (tp > escaped && isspace((unsigned char)tp[-1])) 2617 tp--; 2618 2619 *tp = 0; 2620 *length = tp - line; 2621 return line; 2622 } 2623 2624 /*- 2625 *--------------------------------------------------------------------- 2626 * ParseReadLine -- 2627 * Read an entire line from the input file. Called only by Parse_File. 2628 * 2629 * Results: 2630 * A line w/o its newline 2631 * 2632 * Side Effects: 2633 * Only those associated with reading a character 2634 *--------------------------------------------------------------------- 2635 */ 2636 static char * 2637 ParseReadLine(void) 2638 { 2639 char *line; /* Result */ 2640 int lineLength; /* Length of result */ 2641 int lineno; /* Saved line # */ 2642 int rval; 2643 2644 for (;;) { 2645 line = ParseGetLine(0, &lineLength); 2646 if (line == NULL) 2647 return NULL; 2648 2649 if (line[0] != '.') 2650 return line; 2651 2652 /* 2653 * The line might be a conditional. Ask the conditional module 2654 * about it and act accordingly 2655 */ 2656 switch (Cond_Eval(line)) { 2657 case COND_SKIP: 2658 /* Skip to next conditional that evaluates to COND_PARSE. */ 2659 do { 2660 line = ParseGetLine(PARSE_SKIP, &lineLength); 2661 } while (line && Cond_Eval(line) != COND_PARSE); 2662 if (line == NULL) 2663 break; 2664 continue; 2665 case COND_PARSE: 2666 continue; 2667 case COND_INVALID: /* Not a conditional line */ 2668 /* Check for .for loops */ 2669 rval = For_Eval(line); 2670 if (rval == 0) 2671 /* Not a .for line */ 2672 break; 2673 if (rval < 0) 2674 /* Syntax error - error printed, ignore line */ 2675 continue; 2676 /* Start of a .for loop */ 2677 lineno = curFile->lineno; 2678 /* Accumulate loop lines until matching .endfor */ 2679 do { 2680 line = ParseGetLine(PARSE_RAW, &lineLength); 2681 if (line == NULL) { 2682 Parse_Error(PARSE_FATAL, 2683 "Unexpected end of file in for loop."); 2684 break; 2685 } 2686 } while (For_Accum(line)); 2687 /* Stash each iteration as a new 'input file' */ 2688 For_Run(lineno); 2689 /* Read next line from for-loop buffer */ 2690 continue; 2691 } 2692 return (line); 2693 } 2694 } 2695 2696 /*- 2697 *----------------------------------------------------------------------- 2698 * ParseFinishLine -- 2699 * Handle the end of a dependency group. 2700 * 2701 * Results: 2702 * Nothing. 2703 * 2704 * Side Effects: 2705 * inLine set FALSE. 'targets' list destroyed. 2706 * 2707 *----------------------------------------------------------------------- 2708 */ 2709 static void 2710 ParseFinishLine(void) 2711 { 2712 if (inLine) { 2713 Lst_ForEach(targets, Suff_EndTransform, NULL); 2714 Lst_Destroy(targets, ParseHasCommands); 2715 targets = NULL; 2716 inLine = FALSE; 2717 } 2718 } 2719 2720 2721 /*- 2722 *--------------------------------------------------------------------- 2723 * Parse_File -- 2724 * Parse a file into its component parts, incorporating it into the 2725 * current dependency graph. This is the main function and controls 2726 * almost every other function in this module 2727 * 2728 * Input: 2729 * name the name of the file being read 2730 * fd Open file to makefile to parse 2731 * 2732 * Results: 2733 * None 2734 * 2735 * Side Effects: 2736 * closes fd. 2737 * Loads. Nodes are added to the list of all targets, nodes and links 2738 * are added to the dependency graph. etc. etc. etc. 2739 *--------------------------------------------------------------------- 2740 */ 2741 void 2742 Parse_File(const char *name, int fd) 2743 { 2744 char *cp; /* pointer into the line */ 2745 char *line; /* the line we're working on */ 2746 struct loadedfile *lf; 2747 2748 lf = loadfile(name, fd); 2749 2750 inLine = FALSE; 2751 fatals = 0; 2752 2753 if (name == NULL) { 2754 name = "(stdin)"; 2755 } 2756 2757 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2758 curFile->lf = lf; 2759 2760 do { 2761 for (; (line = ParseReadLine()) != NULL; ) { 2762 if (DEBUG(PARSE)) 2763 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2764 curFile->lineno, line); 2765 if (*line == '.') { 2766 /* 2767 * Lines that begin with the special character may be 2768 * include or undef directives. 2769 * On the other hand they can be suffix rules (.c.o: ...) 2770 * or just dependencies for filenames that start '.'. 2771 */ 2772 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 2773 continue; 2774 } 2775 if (strncmp(cp, "include", 7) == 0 || 2776 ((cp[0] == 's' || cp[0] == '-') && 2777 strncmp(&cp[1], "include", 7) == 0)) { 2778 ParseDoInclude(cp); 2779 continue; 2780 } 2781 if (strncmp(cp, "undef", 5) == 0) { 2782 char *cp2; 2783 for (cp += 5; isspace((unsigned char) *cp); cp++) 2784 continue; 2785 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2786 (*cp2 != '\0'); cp2++) 2787 continue; 2788 *cp2 = '\0'; 2789 Var_Delete(cp, VAR_GLOBAL); 2790 continue; 2791 } else if (strncmp(cp, "export", 6) == 0) { 2792 for (cp += 6; isspace((unsigned char) *cp); cp++) 2793 continue; 2794 Var_Export(cp, 1); 2795 continue; 2796 } else if (strncmp(cp, "unexport", 8) == 0) { 2797 Var_UnExport(cp); 2798 continue; 2799 } else if (strncmp(cp, "info", 4) == 0 || 2800 strncmp(cp, "error", 5) == 0 || 2801 strncmp(cp, "warning", 7) == 0) { 2802 if (ParseMessage(cp)) 2803 continue; 2804 } 2805 } 2806 2807 if (*line == '\t') { 2808 /* 2809 * If a line starts with a tab, it can only hope to be 2810 * a creation command. 2811 */ 2812 cp = line + 1; 2813 shellCommand: 2814 for (; isspace ((unsigned char)*cp); cp++) { 2815 continue; 2816 } 2817 if (*cp) { 2818 if (!inLine) 2819 Parse_Error(PARSE_FATAL, 2820 "Unassociated shell command \"%s\"", 2821 cp); 2822 /* 2823 * So long as it's not a blank line and we're actually 2824 * in a dependency spec, add the command to the list of 2825 * commands of all targets in the dependency spec 2826 */ 2827 if (targets) { 2828 cp = bmake_strdup(cp); 2829 Lst_ForEach(targets, ParseAddCmd, cp); 2830 #ifdef CLEANUP 2831 Lst_AtEnd(targCmds, cp); 2832 #endif 2833 } 2834 } 2835 continue; 2836 } 2837 2838 #ifdef SYSVINCLUDE 2839 if (((strncmp(line, "include", 7) == 0 && 2840 isspace((unsigned char) line[7])) || 2841 ((line[0] == 's' || line[0] == '-') && 2842 strncmp(&line[1], "include", 7) == 0 && 2843 isspace((unsigned char) line[8]))) && 2844 strchr(line, ':') == NULL) { 2845 /* 2846 * It's an S3/S5-style "include". 2847 */ 2848 ParseTraditionalInclude(line); 2849 continue; 2850 } 2851 #endif 2852 if (Parse_IsVar(line)) { 2853 ParseFinishLine(); 2854 Parse_DoVar(line, VAR_GLOBAL); 2855 continue; 2856 } 2857 2858 #ifndef POSIX 2859 /* 2860 * To make life easier on novices, if the line is indented we 2861 * first make sure the line has a dependency operator in it. 2862 * If it doesn't have an operator and we're in a dependency 2863 * line's script, we assume it's actually a shell command 2864 * and add it to the current list of targets. 2865 */ 2866 cp = line; 2867 if (isspace((unsigned char) line[0])) { 2868 while ((*cp != '\0') && isspace((unsigned char) *cp)) 2869 cp++; 2870 while (*cp && (ParseIsEscaped(line, cp) || 2871 (*cp != ':') && (*cp != '!'))) { 2872 cp++; 2873 } 2874 if (*cp == '\0') { 2875 if (inLine) { 2876 Parse_Error(PARSE_WARNING, 2877 "Shell command needs a leading tab"); 2878 goto shellCommand; 2879 } 2880 } 2881 } 2882 #endif 2883 ParseFinishLine(); 2884 2885 /* 2886 * For some reason - probably to make the parser impossible - 2887 * a ';' can be used to separate commands from dependencies. 2888 * Attempt to avoid ';' inside substitution patterns. 2889 */ 2890 { 2891 int level = 0; 2892 2893 for (cp = line; *cp != 0; cp++) { 2894 if (*cp == '\\' && cp[1] != 0) { 2895 cp++; 2896 continue; 2897 } 2898 if (*cp == '$' && 2899 (cp[1] == '(' || cp[1] == '{')) { 2900 level++; 2901 continue; 2902 } 2903 if (level > 0) { 2904 if (*cp == ')' || *cp == '}') { 2905 level--; 2906 continue; 2907 } 2908 } else if (*cp == ';') { 2909 break; 2910 } 2911 } 2912 } 2913 if (*cp != 0) 2914 /* Terminate the dependency list at the ';' */ 2915 *cp++ = 0; 2916 else 2917 cp = NULL; 2918 2919 /* 2920 * We now know it's a dependency line so it needs to have all 2921 * variables expanded before being parsed. Tell the variable 2922 * module to complain if some variable is undefined... 2923 */ 2924 line = Var_Subst(NULL, line, VAR_CMD, TRUE); 2925 2926 /* 2927 * Need a non-circular list for the target nodes 2928 */ 2929 if (targets) 2930 Lst_Destroy(targets, NULL); 2931 2932 targets = Lst_Init(FALSE); 2933 inLine = TRUE; 2934 2935 ParseDoDependency(line); 2936 free(line); 2937 2938 /* If there were commands after a ';', add them now */ 2939 if (cp != NULL) { 2940 goto shellCommand; 2941 } 2942 } 2943 /* 2944 * Reached EOF, but it may be just EOF of an include file... 2945 */ 2946 } while (ParseEOF() == CONTINUE); 2947 2948 if (fatals) { 2949 (void)fflush(stdout); 2950 (void)fprintf(stderr, 2951 "%s: Fatal errors encountered -- cannot continue", 2952 progname); 2953 PrintOnError(NULL, NULL); 2954 exit(1); 2955 } 2956 } 2957 2958 /*- 2959 *--------------------------------------------------------------------- 2960 * Parse_Init -- 2961 * initialize the parsing module 2962 * 2963 * Results: 2964 * none 2965 * 2966 * Side Effects: 2967 * the parseIncPath list is initialized... 2968 *--------------------------------------------------------------------- 2969 */ 2970 void 2971 Parse_Init(void) 2972 { 2973 mainNode = NULL; 2974 parseIncPath = Lst_Init(FALSE); 2975 sysIncPath = Lst_Init(FALSE); 2976 defIncPath = Lst_Init(FALSE); 2977 includes = Lst_Init(FALSE); 2978 #ifdef CLEANUP 2979 targCmds = Lst_Init(FALSE); 2980 #endif 2981 } 2982 2983 void 2984 Parse_End(void) 2985 { 2986 #ifdef CLEANUP 2987 Lst_Destroy(targCmds, (FreeProc *)free); 2988 if (targets) 2989 Lst_Destroy(targets, NULL); 2990 Lst_Destroy(defIncPath, Dir_Destroy); 2991 Lst_Destroy(sysIncPath, Dir_Destroy); 2992 Lst_Destroy(parseIncPath, Dir_Destroy); 2993 Lst_Destroy(includes, NULL); /* Should be empty now */ 2994 #endif 2995 } 2996 2997 2998 /*- 2999 *----------------------------------------------------------------------- 3000 * Parse_MainName -- 3001 * Return a Lst of the main target to create for main()'s sake. If 3002 * no such target exists, we Punt with an obnoxious error message. 3003 * 3004 * Results: 3005 * A Lst of the single node to create. 3006 * 3007 * Side Effects: 3008 * None. 3009 * 3010 *----------------------------------------------------------------------- 3011 */ 3012 Lst 3013 Parse_MainName(void) 3014 { 3015 Lst mainList; /* result list */ 3016 3017 mainList = Lst_Init(FALSE); 3018 3019 if (mainNode == NULL) { 3020 Punt("no target to make."); 3021 /*NOTREACHED*/ 3022 } else if (mainNode->type & OP_DOUBLEDEP) { 3023 (void)Lst_AtEnd(mainList, mainNode); 3024 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3025 } 3026 else 3027 (void)Lst_AtEnd(mainList, mainNode); 3028 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3029 return (mainList); 3030 } 3031 3032 /*- 3033 *----------------------------------------------------------------------- 3034 * ParseMark -- 3035 * Add the filename and lineno to the GNode so that we remember 3036 * where it was first defined. 3037 * 3038 * Side Effects: 3039 * None. 3040 * 3041 *----------------------------------------------------------------------- 3042 */ 3043 static void 3044 ParseMark(GNode *gn) 3045 { 3046 gn->fname = curFile->fname; 3047 gn->lineno = curFile->lineno; 3048 } 3049
Indexes created Sun Sep 21 18:09:52 GMT 2025