1 /* $NetBSD: parse.c,v 1.185 2012/06/12 19:21:51 joerg 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 72 #ifdef __minix 73 #define mmap minix_mmap 74 #define munmap minix_munmap 75 #ifndef MAP_COPY 76 #define MAP_COPY MAP_PRIVATE 77 #endif 78 #endif 79 80 #ifndef MAKE_NATIVE 81 static char rcsid[] = "$NetBSD: parse.c,v 1.185 2012/06/12 19:21:51 joerg Exp $"; 82 #else 83 #include <sys/cdefs.h> 84 #ifndef lint 85 #if 0 86 static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94"; 87 #else 88 __RCSID("$NetBSD: parse.c,v 1.185 2012/06/12 19:21:51 joerg Exp $"); 89 #endif 90 #endif /* not lint */ 91 #endif 92 93 /*- 94 * parse.c -- 95 * Functions to parse a makefile. 96 * 97 * One function, Parse_Init, must be called before any functions 98 * in this module are used. After that, the function Parse_File is the 99 * main entry point and controls most of the other functions in this 100 * module. 101 * 102 * Most important structures are kept in Lsts. Directories for 103 * the .include "..." function are kept in the 'parseIncPath' Lst, while 104 * those for the .include <...> are kept in the 'sysIncPath' Lst. The 105 * targets currently being defined are kept in the 'targets' Lst. 106 * 107 * The variables 'fname' and 'lineno' are used to track the name 108 * of the current file and the line number in that file so that error 109 * messages can be more meaningful. 110 * 111 * Interface: 112 * Parse_Init Initialization function which must be 113 * called before anything else in this module 114 * is used. 115 * 116 * Parse_End Cleanup the module 117 * 118 * Parse_File Function used to parse a makefile. It must 119 * be given the name of the file, which should 120 * already have been opened, and a function 121 * to call to read a character from the file. 122 * 123 * Parse_IsVar Returns TRUE if the given line is a 124 * variable assignment. Used by MainParseArgs 125 * to determine if an argument is a target 126 * or a variable assignment. Used internally 127 * for pretty much the same thing... 128 * 129 * Parse_Error Function called when an error occurs in 130 * parsing. Used by the variable and 131 * conditional modules. 132 * Parse_MainName Returns a Lst of the main target to create. 133 */ 134 135 #include <sys/types.h> 136 #include <sys/mman.h> 137 #include <sys/stat.h> 138 #include <assert.h> 139 #include <ctype.h> 140 #include <errno.h> 141 #include <fcntl.h> 142 #include <stdarg.h> 143 #include <stdio.h> 144 145 #ifndef MAP_COPY 146 #define MAP_COPY MAP_PRIVATE 147 #endif 148 149 #include "make.h" 150 #include "hash.h" 151 #include "dir.h" 152 #include "job.h" 153 #include "buf.h" 154 #include "pathnames.h" 155 156 //////////////////////////////////////////////////////////// 157 // types and constants 158 159 /* 160 * Structure for a file being read ("included file") 161 */ 162 typedef struct IFile { 163 const char *fname; /* name of file */ 164 int lineno; /* current line number in file */ 165 int first_lineno; /* line number of start of text */ 166 int cond_depth; /* 'if' nesting when file opened */ 167 char *P_str; /* point to base of string buffer */ 168 char *P_ptr; /* point to next char of string buffer */ 169 char *P_end; /* point to the end of string buffer */ 170 char *(*nextbuf)(void *, size_t *); /* Function to get more data */ 171 void *nextbuf_arg; /* Opaque arg for nextbuf() */ 172 struct loadedfile *lf; /* loadedfile object, if any */ 173 } IFile; 174 175 176 /* 177 * These values are returned by ParseEOF to tell Parse_File whether to 178 * CONTINUE parsing, i.e. it had only reached the end of an include file, 179 * or if it's DONE. 180 */ 181 #define CONTINUE 1 182 #define DONE 0 183 184 /* 185 * Tokens for target attributes 186 */ 187 typedef enum { 188 Begin, /* .BEGIN */ 189 Default, /* .DEFAULT */ 190 End, /* .END */ 191 dotError, /* .ERROR */ 192 Ignore, /* .IGNORE */ 193 Includes, /* .INCLUDES */ 194 Interrupt, /* .INTERRUPT */ 195 Libs, /* .LIBS */ 196 Meta, /* .META */ 197 MFlags, /* .MFLAGS or .MAKEFLAGS */ 198 Main, /* .MAIN and we don't have anything user-specified to 199 * make */ 200 NoExport, /* .NOEXPORT */ 201 NoMeta, /* .NOMETA */ 202 NoMetaCmp, /* .NOMETA_CMP */ 203 NoPath, /* .NOPATH */ 204 Not, /* Not special */ 205 NotParallel, /* .NOTPARALLEL */ 206 Null, /* .NULL */ 207 ExObjdir, /* .OBJDIR */ 208 Order, /* .ORDER */ 209 Parallel, /* .PARALLEL */ 210 ExPath, /* .PATH */ 211 Phony, /* .PHONY */ 212 #ifdef POSIX 213 Posix, /* .POSIX */ 214 #endif 215 Precious, /* .PRECIOUS */ 216 ExShell, /* .SHELL */ 217 Silent, /* .SILENT */ 218 SingleShell, /* .SINGLESHELL */ 219 Suffixes, /* .SUFFIXES */ 220 Wait, /* .WAIT */ 221 Attribute /* Generic attribute */ 222 } ParseSpecial; 223 224 /* 225 * Other tokens 226 */ 227 #define LPAREN '(' 228 #define RPAREN ')' 229 230 231 //////////////////////////////////////////////////////////// 232 // result data 233 234 /* 235 * The main target to create. This is the first target on the first 236 * dependency line in the first makefile. 237 */ 238 static GNode *mainNode; 239 240 //////////////////////////////////////////////////////////// 241 // eval state 242 243 /* targets we're working on */ 244 static Lst targets; 245 246 #ifdef CLEANUP 247 /* command lines for targets */ 248 static Lst targCmds; 249 #endif 250 251 /* 252 * specType contains the SPECial TYPE of the current target. It is 253 * Not if the target is unspecial. If it *is* special, however, the children 254 * are linked as children of the parent but not vice versa. This variable is 255 * set in ParseDoDependency 256 */ 257 static ParseSpecial specType; 258 259 /* 260 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER 261 * seen, then set to each successive source on the line. 262 */ 263 static GNode *predecessor; 264 265 //////////////////////////////////////////////////////////// 266 // parser state 267 268 /* true if currently in a dependency line or its commands */ 269 static Boolean inLine; 270 271 /* number of fatal errors */ 272 static int fatals = 0; 273 274 /* 275 * Variables for doing includes 276 */ 277 278 /* current file being read */ 279 static IFile *curFile; 280 281 /* stack of IFiles generated by .includes */ 282 static Lst includes; 283 284 /* include paths (lists of directories) */ 285 Lst parseIncPath; /* dirs for "..." includes */ 286 Lst sysIncPath; /* dirs for <...> includes */ 287 Lst defIncPath; /* default for sysIncPath */ 288 289 //////////////////////////////////////////////////////////// 290 // parser tables 291 292 /* 293 * The parseKeywords table is searched using binary search when deciding 294 * if a target or source is special. The 'spec' field is the ParseSpecial 295 * type of the keyword ("Not" if the keyword isn't special as a target) while 296 * the 'op' field is the operator to apply to the list of targets if the 297 * keyword is used as a source ("0" if the keyword isn't special as a source) 298 */ 299 static const struct { 300 const char *name; /* Name of keyword */ 301 ParseSpecial spec; /* Type when used as a target */ 302 int op; /* Operator when used as a source */ 303 } parseKeywords[] = { 304 { ".BEGIN", Begin, 0 }, 305 { ".DEFAULT", Default, 0 }, 306 { ".END", End, 0 }, 307 { ".ERROR", dotError, 0 }, 308 { ".EXEC", Attribute, OP_EXEC }, 309 { ".IGNORE", Ignore, OP_IGNORE }, 310 { ".INCLUDES", Includes, 0 }, 311 { ".INTERRUPT", Interrupt, 0 }, 312 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 313 { ".JOIN", Attribute, OP_JOIN }, 314 { ".LIBS", Libs, 0 }, 315 { ".MADE", Attribute, OP_MADE }, 316 { ".MAIN", Main, 0 }, 317 { ".MAKE", Attribute, OP_MAKE }, 318 { ".MAKEFLAGS", MFlags, 0 }, 319 { ".META", Meta, OP_META }, 320 { ".MFLAGS", MFlags, 0 }, 321 { ".NOMETA", NoMeta, OP_NOMETA }, 322 { ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP }, 323 { ".NOPATH", NoPath, OP_NOPATH }, 324 { ".NOTMAIN", Attribute, OP_NOTMAIN }, 325 { ".NOTPARALLEL", NotParallel, 0 }, 326 { ".NO_PARALLEL", NotParallel, 0 }, 327 { ".NULL", Null, 0 }, 328 { ".OBJDIR", ExObjdir, 0 }, 329 { ".OPTIONAL", Attribute, OP_OPTIONAL }, 330 { ".ORDER", Order, 0 }, 331 { ".PARALLEL", Parallel, 0 }, 332 { ".PATH", ExPath, 0 }, 333 { ".PHONY", Phony, OP_PHONY }, 334 #ifdef POSIX 335 { ".POSIX", Posix, 0 }, 336 #endif 337 { ".PRECIOUS", Precious, OP_PRECIOUS }, 338 { ".RECURSIVE", Attribute, OP_MAKE }, 339 { ".SHELL", ExShell, 0 }, 340 { ".SILENT", Silent, OP_SILENT }, 341 { ".SINGLESHELL", SingleShell, 0 }, 342 { ".SUFFIXES", Suffixes, 0 }, 343 { ".USE", Attribute, OP_USE }, 344 { ".USEBEFORE", Attribute, OP_USEBEFORE }, 345 { ".WAIT", Wait, 0 }, 346 }; 347 348 //////////////////////////////////////////////////////////// 349 // local functions 350 351 static int ParseIsEscaped(const char *, const char *); 352 static void ParseErrorInternal(const char *, size_t, int, const char *, ...) 353 MAKE_ATTR_PRINTFLIKE(4,5); 354 static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list) 355 MAKE_ATTR_PRINTFLIKE(5, 0); 356 static int ParseFindKeyword(const char *); 357 static int ParseLinkSrc(void *, void *); 358 static int ParseDoOp(void *, void *); 359 static void ParseDoSrc(int, const char *); 360 static int ParseFindMain(void *, void *); 361 static int ParseAddDir(void *, void *); 362 static int ParseClearPath(void *, void *); 363 static void ParseDoDependency(char *); 364 static int ParseAddCmd(void *, void *); 365 static void ParseHasCommands(void *); 366 static void ParseDoInclude(char *); 367 static void ParseSetParseFile(const char *); 368 #ifdef SYSVINCLUDE 369 static void ParseTraditionalInclude(char *); 370 #endif 371 #ifdef GMAKEEXPORT 372 static void ParseGmakeExport(char *); 373 #endif 374 static int ParseEOF(void); 375 static char *ParseReadLine(void); 376 static void ParseFinishLine(void); 377 static void ParseMark(GNode *); 378 379 //////////////////////////////////////////////////////////// 380 // file loader 381 382 struct loadedfile { 383 const char *path; /* name, for error reports */ 384 char *buf; /* contents buffer */ 385 size_t len; /* length of contents */ 386 size_t maplen; /* length of mmap area, or 0 */ 387 Boolean used; /* XXX: have we used the data yet */ 388 }; 389 390 /* 391 * Constructor/destructor for loadedfile 392 */ 393 static struct loadedfile * 394 loadedfile_create(const char *path) 395 { 396 struct loadedfile *lf; 397 398 lf = bmake_malloc(sizeof(*lf)); 399 lf->path = (path == NULL ? "(stdin)" : path); 400 lf->buf = NULL; 401 lf->len = 0; 402 lf->maplen = 0; 403 lf->used = FALSE; 404 return lf; 405 } 406 407 static void 408 loadedfile_destroy(struct loadedfile *lf) 409 { 410 if (lf->buf != NULL) { 411 if (lf->maplen > 0) { 412 munmap(lf->buf, lf->maplen); 413 } else { 414 free(lf->buf); 415 } 416 } 417 free(lf); 418 } 419 420 /* 421 * nextbuf() operation for loadedfile, as needed by the weird and twisted 422 * logic below. Once that's cleaned up, we can get rid of lf->used... 423 */ 424 static char * 425 loadedfile_nextbuf(void *x, size_t *len) 426 { 427 struct loadedfile *lf = x; 428 429 if (lf->used) { 430 return NULL; 431 } 432 lf->used = TRUE; 433 *len = lf->len; 434 return lf->buf; 435 } 436 437 /* 438 * Try to get the size of a file. 439 */ 440 static ReturnStatus 441 load_getsize(int fd, size_t *ret) 442 { 443 struct stat st; 444 445 if (fstat(fd, &st) < 0) { 446 return FAILURE; 447 } 448 449 if (!S_ISREG(st.st_mode)) { 450 return FAILURE; 451 } 452 453 /* 454 * st_size is an off_t, which is 64 bits signed; *ret is 455 * size_t, which might be 32 bits unsigned or 64 bits 456 * unsigned. Rather than being elaborate, just punt on 457 * files that are more than 2^31 bytes. We should never 458 * see a makefile that size in practice... 459 * 460 * While we're at it reject negative sizes too, just in case. 461 */ 462 if (st.st_size < 0 || st.st_size > 0x7fffffff) { 463 return FAILURE; 464 } 465 466 *ret = (size_t) st.st_size; 467 return SUCCESS; 468 } 469 470 /* 471 * Read in a file. 472 * 473 * Until the path search logic can be moved under here instead of 474 * being in the caller in another source file, we need to have the fd 475 * passed in already open. Bleh. 476 * 477 * If the path is NULL use stdin and (to insure against fd leaks) 478 * assert that the caller passed in -1. 479 */ 480 static struct loadedfile * 481 loadfile(const char *path, int fd) 482 { 483 struct loadedfile *lf; 484 long pagesize; 485 ssize_t result; 486 size_t bufpos; 487 488 lf = loadedfile_create(path); 489 490 if (path == NULL) { 491 assert(fd == -1); 492 fd = STDIN_FILENO; 493 } else { 494 #if 0 /* notyet */ 495 fd = open(path, O_RDONLY); 496 if (fd < 0) { 497 ... 498 Error("%s: %s", path, strerror(errno)); 499 exit(1); 500 } 501 #endif 502 } 503 504 if (load_getsize(fd, &lf->len) == SUCCESS) { 505 /* found a size, try mmap */ 506 pagesize = sysconf(_SC_PAGESIZE); 507 if (pagesize <= 0) { 508 pagesize = 0x1000; 509 } 510 /* round size up to a page */ 511 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 512 513 /* 514 * XXX hack for dealing with empty files; remove when 515 * we're no longer limited by interfacing to the old 516 * logic elsewhere in this file. 517 */ 518 if (lf->maplen == 0) { 519 lf->maplen = pagesize; 520 } 521 522 /* 523 * FUTURE: remove PROT_WRITE when the parser no longer 524 * needs to scribble on the input. 525 */ 526 527 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 528 MAP_FILE|MAP_COPY, fd, 0); 529 if (lf->buf != MAP_FAILED) { 530 /* succeeded */ 531 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 532 char *b = malloc(lf->len + 1); 533 b[lf->len] = '\n'; 534 memcpy(b, lf->buf, lf->len++); 535 munmap(lf->buf, lf->maplen); 536 lf->maplen = 0; 537 lf->buf = b; 538 } 539 goto done; 540 } 541 } 542 543 /* cannot mmap; load the traditional way */ 544 545 lf->maplen = 0; 546 lf->len = 1024; 547 lf->buf = bmake_malloc(lf->len); 548 549 bufpos = 0; 550 while (1) { 551 assert(bufpos <= lf->len); 552 if (bufpos == lf->len) { 553 lf->len *= 2; 554 lf->buf = bmake_realloc(lf->buf, lf->len); 555 } 556 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 557 if (result < 0) { 558 Error("%s: read error: %s", path, strerror(errno)); 559 exit(1); 560 } 561 if (result == 0) { 562 break; 563 } 564 bufpos += result; 565 } 566 assert(bufpos <= lf->len); 567 lf->len = bufpos; 568 569 /* truncate malloc region to actual length (maybe not useful) */ 570 if (lf->len > 0) { 571 lf->buf = bmake_realloc(lf->buf, lf->len); 572 } 573 574 done: 575 if (path != NULL) { 576 close(fd); 577 } 578 return lf; 579 } 580 581 //////////////////////////////////////////////////////////// 582 // old code 583 584 /*- 585 *---------------------------------------------------------------------- 586 * ParseIsEscaped -- 587 * Check if the current character is escaped on the current line 588 * 589 * Results: 590 * 0 if the character is not backslash escaped, 1 otherwise 591 * 592 * Side Effects: 593 * None 594 *---------------------------------------------------------------------- 595 */ 596 static int 597 ParseIsEscaped(const char *line, const char *c) 598 { 599 int active = 0; 600 for (;;) { 601 if (line == c) 602 return active; 603 if (*--c != '\\') 604 return active; 605 active = !active; 606 } 607 } 608 609 /*- 610 *---------------------------------------------------------------------- 611 * ParseFindKeyword -- 612 * Look in the table of keywords for one matching the given string. 613 * 614 * Input: 615 * str String to find 616 * 617 * Results: 618 * The index of the keyword, or -1 if it isn't there. 619 * 620 * Side Effects: 621 * None 622 *---------------------------------------------------------------------- 623 */ 624 static int 625 ParseFindKeyword(const char *str) 626 { 627 int start, end, cur; 628 int diff; 629 630 start = 0; 631 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 632 633 do { 634 cur = start + ((end - start) / 2); 635 diff = strcmp(str, parseKeywords[cur].name); 636 637 if (diff == 0) { 638 return (cur); 639 } else if (diff < 0) { 640 end = cur - 1; 641 } else { 642 start = cur + 1; 643 } 644 } while (start <= end); 645 return (-1); 646 } 647 648 /*- 649 * ParseVErrorInternal -- 650 * Error message abort function for parsing. Prints out the context 651 * of the error (line number and file) as well as the message with 652 * two optional arguments. 653 * 654 * Results: 655 * None 656 * 657 * Side Effects: 658 * "fatals" is incremented if the level is PARSE_FATAL. 659 */ 660 /* VARARGS */ 661 static void 662 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 663 const char *fmt, va_list ap) 664 { 665 static Boolean fatal_warning_error_printed = FALSE; 666 667 (void)fprintf(f, "%s: ", progname); 668 669 if (cfname != NULL) { 670 (void)fprintf(f, "\""); 671 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 672 char *cp; 673 const char *dir; 674 675 /* 676 * Nothing is more annoying than not knowing 677 * which Makefile is the culprit. 678 */ 679 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 680 if (dir == NULL || *dir == '\0' || 681 (*dir == '.' && dir[1] == '\0')) 682 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 683 if (dir == NULL) 684 dir = "."; 685 686 (void)fprintf(f, "%s/%s", dir, cfname); 687 } else 688 (void)fprintf(f, "%s", cfname); 689 690 (void)fprintf(f, "\" line %d: ", (int)clineno); 691 } 692 if (type == PARSE_WARNING) 693 (void)fprintf(f, "warning: "); 694 (void)vfprintf(f, fmt, ap); 695 (void)fprintf(f, "\n"); 696 (void)fflush(f); 697 if (type == PARSE_FATAL || parseWarnFatal) 698 fatals += 1; 699 if (parseWarnFatal && !fatal_warning_error_printed) { 700 Error("parsing warnings being treated as errors"); 701 fatal_warning_error_printed = TRUE; 702 } 703 } 704 705 /*- 706 * ParseErrorInternal -- 707 * Error function 708 * 709 * Results: 710 * None 711 * 712 * Side Effects: 713 * None 714 */ 715 /* VARARGS */ 716 static void 717 ParseErrorInternal(const char *cfname, size_t clineno, int type, 718 const char *fmt, ...) 719 { 720 va_list ap; 721 722 va_start(ap, fmt); 723 (void)fflush(stdout); 724 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 725 va_end(ap); 726 727 if (debug_file != stderr && debug_file != stdout) { 728 va_start(ap, fmt); 729 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 730 va_end(ap); 731 } 732 } 733 734 /*- 735 * Parse_Error -- 736 * External interface to ParseErrorInternal; uses the default filename 737 * Line number. 738 * 739 * Results: 740 * None 741 * 742 * Side Effects: 743 * None 744 */ 745 /* VARARGS */ 746 void 747 Parse_Error(int type, const char *fmt, ...) 748 { 749 va_list ap; 750 const char *fname; 751 size_t lineno; 752 753 if (curFile == NULL) { 754 fname = NULL; 755 lineno = 0; 756 } else { 757 fname = curFile->fname; 758 lineno = curFile->lineno; 759 } 760 761 va_start(ap, fmt); 762 (void)fflush(stdout); 763 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 764 va_end(ap); 765 766 if (debug_file != stderr && debug_file != stdout) { 767 va_start(ap, fmt); 768 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 769 va_end(ap); 770 } 771 } 772 773 774 /* 775 * ParseMessage 776 * Parse a .info .warning or .error directive 777 * 778 * The input is the line minus the ".". We substitute 779 * variables, print the message and exit(1) (for .error) or just print 780 * a warning if the directive is malformed. 781 */ 782 static Boolean 783 ParseMessage(char *line) 784 { 785 int mtype; 786 787 switch(*line) { 788 case 'i': 789 mtype = 0; 790 break; 791 case 'w': 792 mtype = PARSE_WARNING; 793 break; 794 case 'e': 795 mtype = PARSE_FATAL; 796 break; 797 default: 798 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 799 return FALSE; 800 } 801 802 while (isalpha((u_char)*line)) 803 line++; 804 if (!isspace((u_char)*line)) 805 return FALSE; /* not for us */ 806 while (isspace((u_char)*line)) 807 line++; 808 809 line = Var_Subst(NULL, line, VAR_CMD, 0); 810 Parse_Error(mtype, "%s", line); 811 free(line); 812 813 if (mtype == PARSE_FATAL) { 814 /* Terminate immediately. */ 815 exit(1); 816 } 817 return TRUE; 818 } 819 820 /*- 821 *--------------------------------------------------------------------- 822 * ParseLinkSrc -- 823 * Link the parent node to its new child. Used in a Lst_ForEach by 824 * ParseDoDependency. If the specType isn't 'Not', the parent 825 * isn't linked as a parent of the child. 826 * 827 * Input: 828 * pgnp The parent node 829 * cgpn The child node 830 * 831 * Results: 832 * Always = 0 833 * 834 * Side Effects: 835 * New elements are added to the parents list of cgn and the 836 * children list of cgn. the unmade field of pgn is updated 837 * to reflect the additional child. 838 *--------------------------------------------------------------------- 839 */ 840 static int 841 ParseLinkSrc(void *pgnp, void *cgnp) 842 { 843 GNode *pgn = (GNode *)pgnp; 844 GNode *cgn = (GNode *)cgnp; 845 846 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 847 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 848 (void)Lst_AtEnd(pgn->children, cgn); 849 if (specType == Not) 850 (void)Lst_AtEnd(cgn->parents, pgn); 851 pgn->unmade += 1; 852 if (DEBUG(PARSE)) { 853 fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name); 854 Targ_PrintNode(pgn, 0); 855 Targ_PrintNode(cgn, 0); 856 } 857 return (0); 858 } 859 860 /*- 861 *--------------------------------------------------------------------- 862 * ParseDoOp -- 863 * Apply the parsed operator to the given target node. Used in a 864 * Lst_ForEach call by ParseDoDependency once all targets have 865 * been found and their operator parsed. If the previous and new 866 * operators are incompatible, a major error is taken. 867 * 868 * Input: 869 * gnp The node to which the operator is to be applied 870 * opp The operator to apply 871 * 872 * Results: 873 * Always 0 874 * 875 * Side Effects: 876 * The type field of the node is altered to reflect any new bits in 877 * the op. 878 *--------------------------------------------------------------------- 879 */ 880 static int 881 ParseDoOp(void *gnp, void *opp) 882 { 883 GNode *gn = (GNode *)gnp; 884 int op = *(int *)opp; 885 /* 886 * If the dependency mask of the operator and the node don't match and 887 * the node has actually had an operator applied to it before, and 888 * the operator actually has some dependency information in it, complain. 889 */ 890 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 891 !OP_NOP(gn->type) && !OP_NOP(op)) 892 { 893 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 894 return (1); 895 } 896 897 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 898 /* 899 * If the node was the object of a :: operator, we need to create a 900 * new instance of it for the children and commands on this dependency 901 * line. The new instance is placed on the 'cohorts' list of the 902 * initial one (note the initial one is not on its own cohorts list) 903 * and the new instance is linked to all parents of the initial 904 * instance. 905 */ 906 GNode *cohort; 907 908 /* 909 * Propagate copied bits to the initial node. They'll be propagated 910 * back to the rest of the cohorts later. 911 */ 912 gn->type |= op & ~OP_OPMASK; 913 914 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 915 /* 916 * Make the cohort invisible as well to avoid duplicating it into 917 * other variables. True, parents of this target won't tend to do 918 * anything with their local variables, but better safe than 919 * sorry. (I think this is pointless now, since the relevant list 920 * traversals will no longer see this node anyway. -mycroft) 921 */ 922 cohort->type = op | OP_INVISIBLE; 923 (void)Lst_AtEnd(gn->cohorts, cohort); 924 cohort->centurion = gn; 925 gn->unmade_cohorts += 1; 926 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 927 gn->unmade_cohorts); 928 } else { 929 /* 930 * We don't want to nuke any previous flags (whatever they were) so we 931 * just OR the new operator into the old 932 */ 933 gn->type |= op; 934 } 935 936 return (0); 937 } 938 939 /*- 940 *--------------------------------------------------------------------- 941 * ParseDoSrc -- 942 * Given the name of a source, figure out if it is an attribute 943 * and apply it to the targets if it is. Else decide if there is 944 * some attribute which should be applied *to* the source because 945 * of some special target and apply it if so. Otherwise, make the 946 * source be a child of the targets in the list 'targets' 947 * 948 * Input: 949 * tOp operator (if any) from special targets 950 * src name of the source to handle 951 * 952 * Results: 953 * None 954 * 955 * Side Effects: 956 * Operator bits may be added to the list of targets or to the source. 957 * The targets may have a new source added to their lists of children. 958 *--------------------------------------------------------------------- 959 */ 960 static void 961 ParseDoSrc(int tOp, const char *src) 962 { 963 GNode *gn = NULL; 964 static int wait_number = 0; 965 char wait_src[16]; 966 967 if (*src == '.' && isupper ((unsigned char)src[1])) { 968 int keywd = ParseFindKeyword(src); 969 if (keywd != -1) { 970 int op = parseKeywords[keywd].op; 971 if (op != 0) { 972 Lst_ForEach(targets, ParseDoOp, &op); 973 return; 974 } 975 if (parseKeywords[keywd].spec == Wait) { 976 /* 977 * We add a .WAIT node in the dependency list. 978 * After any dynamic dependencies (and filename globbing) 979 * have happened, it is given a dependency on the each 980 * previous child back to and previous .WAIT node. 981 * The next child won't be scheduled until the .WAIT node 982 * is built. 983 * We give each .WAIT node a unique name (mainly for diag). 984 */ 985 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 986 gn = Targ_FindNode(wait_src, TARG_NOHASH); 987 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 988 Lst_ForEach(targets, ParseLinkSrc, gn); 989 return; 990 } 991 } 992 } 993 994 switch (specType) { 995 case Main: 996 /* 997 * If we have noted the existence of a .MAIN, it means we need 998 * to add the sources of said target to the list of things 999 * to create. The string 'src' is likely to be free, so we 1000 * must make a new copy of it. Note that this will only be 1001 * invoked if the user didn't specify a target on the command 1002 * line. This is to allow #ifmake's to succeed, or something... 1003 */ 1004 (void)Lst_AtEnd(create, bmake_strdup(src)); 1005 /* 1006 * Add the name to the .TARGETS variable as well, so the user can 1007 * employ that, if desired. 1008 */ 1009 Var_Append(".TARGETS", src, VAR_GLOBAL); 1010 return; 1011 1012 case Order: 1013 /* 1014 * Create proper predecessor/successor links between the previous 1015 * source and the current one. 1016 */ 1017 gn = Targ_FindNode(src, TARG_CREATE); 1018 if (predecessor != NULL) { 1019 (void)Lst_AtEnd(predecessor->order_succ, gn); 1020 (void)Lst_AtEnd(gn->order_pred, predecessor); 1021 if (DEBUG(PARSE)) { 1022 fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n", 1023 predecessor->name, gn->name); 1024 Targ_PrintNode(predecessor, 0); 1025 Targ_PrintNode(gn, 0); 1026 } 1027 } 1028 /* 1029 * The current source now becomes the predecessor for the next one. 1030 */ 1031 predecessor = gn; 1032 break; 1033 1034 default: 1035 /* 1036 * If the source is not an attribute, we need to find/create 1037 * a node for it. After that we can apply any operator to it 1038 * from a special target or link it to its parents, as 1039 * appropriate. 1040 * 1041 * In the case of a source that was the object of a :: operator, 1042 * the attribute is applied to all of its instances (as kept in 1043 * the 'cohorts' list of the node) or all the cohorts are linked 1044 * to all the targets. 1045 */ 1046 1047 /* Find/create the 'src' node and attach to all targets */ 1048 gn = Targ_FindNode(src, TARG_CREATE); 1049 if (tOp) { 1050 gn->type |= tOp; 1051 } else { 1052 Lst_ForEach(targets, ParseLinkSrc, gn); 1053 } 1054 break; 1055 } 1056 } 1057 1058 /*- 1059 *----------------------------------------------------------------------- 1060 * ParseFindMain -- 1061 * Find a real target in the list and set it to be the main one. 1062 * Called by ParseDoDependency when a main target hasn't been found 1063 * yet. 1064 * 1065 * Input: 1066 * gnp Node to examine 1067 * 1068 * Results: 1069 * 0 if main not found yet, 1 if it is. 1070 * 1071 * Side Effects: 1072 * mainNode is changed and Targ_SetMain is called. 1073 * 1074 *----------------------------------------------------------------------- 1075 */ 1076 static int 1077 ParseFindMain(void *gnp, void *dummy) 1078 { 1079 GNode *gn = (GNode *)gnp; 1080 if ((gn->type & OP_NOTARGET) == 0) { 1081 mainNode = gn; 1082 Targ_SetMain(gn); 1083 return (dummy ? 1 : 1); 1084 } else { 1085 return (dummy ? 0 : 0); 1086 } 1087 } 1088 1089 /*- 1090 *----------------------------------------------------------------------- 1091 * ParseAddDir -- 1092 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1093 * 1094 * Results: 1095 * === 0 1096 * 1097 * Side Effects: 1098 * See Dir_AddDir. 1099 * 1100 *----------------------------------------------------------------------- 1101 */ 1102 static int 1103 ParseAddDir(void *path, void *name) 1104 { 1105 (void)Dir_AddDir((Lst) path, (char *)name); 1106 return(0); 1107 } 1108 1109 /*- 1110 *----------------------------------------------------------------------- 1111 * ParseClearPath -- 1112 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1113 * 1114 * Results: 1115 * === 0 1116 * 1117 * Side Effects: 1118 * See Dir_ClearPath 1119 * 1120 *----------------------------------------------------------------------- 1121 */ 1122 static int 1123 ParseClearPath(void *path, void *dummy) 1124 { 1125 Dir_ClearPath((Lst) path); 1126 return(dummy ? 0 : 0); 1127 } 1128 1129 /*- 1130 *--------------------------------------------------------------------- 1131 * ParseDoDependency -- 1132 * Parse the dependency line in line. 1133 * 1134 * Input: 1135 * line the line to parse 1136 * 1137 * Results: 1138 * None 1139 * 1140 * Side Effects: 1141 * The nodes of the sources are linked as children to the nodes of the 1142 * targets. Some nodes may be created. 1143 * 1144 * We parse a dependency line by first extracting words from the line and 1145 * finding nodes in the list of all targets with that name. This is done 1146 * until a character is encountered which is an operator character. Currently 1147 * these are only ! and :. At this point the operator is parsed and the 1148 * pointer into the line advanced until the first source is encountered. 1149 * The parsed operator is applied to each node in the 'targets' list, 1150 * which is where the nodes found for the targets are kept, by means of 1151 * the ParseDoOp function. 1152 * The sources are read in much the same way as the targets were except 1153 * that now they are expanded using the wildcarding scheme of the C-Shell 1154 * and all instances of the resulting words in the list of all targets 1155 * are found. Each of the resulting nodes is then linked to each of the 1156 * targets as one of its children. 1157 * Certain targets are handled specially. These are the ones detailed 1158 * by the specType variable. 1159 * The storing of transformation rules is also taken care of here. 1160 * A target is recognized as a transformation rule by calling 1161 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1162 * from the suffix module via Suff_AddTransform rather than the standard 1163 * Targ_FindNode in the target module. 1164 *--------------------------------------------------------------------- 1165 */ 1166 static void 1167 ParseDoDependency(char *line) 1168 { 1169 char *cp; /* our current position */ 1170 GNode *gn = NULL; /* a general purpose temporary node */ 1171 int op; /* the operator on the line */ 1172 char savec; /* a place to save a character */ 1173 Lst paths; /* List of search paths to alter when parsing 1174 * a list of .PATH targets */ 1175 int tOp; /* operator from special target */ 1176 Lst sources; /* list of archive source names after 1177 * expansion */ 1178 Lst curTargs; /* list of target names to be found and added 1179 * to the targets list */ 1180 char *lstart = line; 1181 1182 if (DEBUG(PARSE)) 1183 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1184 tOp = 0; 1185 1186 specType = Not; 1187 paths = NULL; 1188 1189 curTargs = Lst_Init(FALSE); 1190 1191 do { 1192 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1193 !(isspace((unsigned char)*cp) || 1194 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1195 cp++) { 1196 if (*cp == '$') { 1197 /* 1198 * Must be a dynamic source (would have been expanded 1199 * otherwise), so call the Var module to parse the puppy 1200 * so we can safely advance beyond it...There should be 1201 * no errors in this, as they would have been discovered 1202 * in the initial Var_Subst and we wouldn't be here. 1203 */ 1204 int length; 1205 void *freeIt; 1206 char *result; 1207 1208 result = Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt); 1209 if (freeIt) 1210 free(freeIt); 1211 cp += length-1; 1212 } 1213 } 1214 1215 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1216 /* 1217 * Archives must be handled specially to make sure the OP_ARCHV 1218 * flag is set in their 'type' field, for one thing, and because 1219 * things like "archive(file1.o file2.o file3.o)" are permissible. 1220 * Arch_ParseArchive will set 'line' to be the first non-blank 1221 * after the archive-spec. It creates/finds nodes for the members 1222 * and places them on the given list, returning SUCCESS if all 1223 * went well and FAILURE if there was an error in the 1224 * specification. On error, line should remain untouched. 1225 */ 1226 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1227 Parse_Error(PARSE_FATAL, 1228 "Error in archive specification: \"%s\"", line); 1229 goto out; 1230 } else { 1231 continue; 1232 } 1233 } 1234 savec = *cp; 1235 1236 if (!*cp) { 1237 /* 1238 * Ending a dependency line without an operator is a Bozo 1239 * no-no. As a heuristic, this is also often triggered by 1240 * undetected conflicts from cvs/rcs merges. 1241 */ 1242 if ((strncmp(line, "<<<<<<", 6) == 0) || 1243 (strncmp(line, "======", 6) == 0) || 1244 (strncmp(line, ">>>>>>", 6) == 0)) 1245 Parse_Error(PARSE_FATAL, 1246 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1247 else 1248 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1249 : "Need an operator"); 1250 goto out; 1251 } 1252 *cp = '\0'; 1253 1254 /* 1255 * Have a word in line. See if it's a special target and set 1256 * specType to match it. 1257 */ 1258 if (*line == '.' && isupper ((unsigned char)line[1])) { 1259 /* 1260 * See if the target is a special target that must have it 1261 * or its sources handled specially. 1262 */ 1263 int keywd = ParseFindKeyword(line); 1264 if (keywd != -1) { 1265 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1266 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1267 goto out; 1268 } 1269 1270 specType = parseKeywords[keywd].spec; 1271 tOp = parseKeywords[keywd].op; 1272 1273 /* 1274 * Certain special targets have special semantics: 1275 * .PATH Have to set the dirSearchPath 1276 * variable too 1277 * .MAIN Its sources are only used if 1278 * nothing has been specified to 1279 * create. 1280 * .DEFAULT Need to create a node to hang 1281 * commands on, but we don't want 1282 * it in the graph, nor do we want 1283 * it to be the Main Target, so we 1284 * create it, set OP_NOTMAIN and 1285 * add it to the list, setting 1286 * DEFAULT to the new node for 1287 * later use. We claim the node is 1288 * A transformation rule to make 1289 * life easier later, when we'll 1290 * use Make_HandleUse to actually 1291 * apply the .DEFAULT commands. 1292 * .PHONY The list of targets 1293 * .NOPATH Don't search for file in the path 1294 * .BEGIN 1295 * .END 1296 * .ERROR 1297 * .INTERRUPT Are not to be considered the 1298 * main target. 1299 * .NOTPARALLEL Make only one target at a time. 1300 * .SINGLESHELL Create a shell for each command. 1301 * .ORDER Must set initial predecessor to NULL 1302 */ 1303 switch (specType) { 1304 case ExPath: 1305 if (paths == NULL) { 1306 paths = Lst_Init(FALSE); 1307 } 1308 (void)Lst_AtEnd(paths, dirSearchPath); 1309 break; 1310 case Main: 1311 if (!Lst_IsEmpty(create)) { 1312 specType = Not; 1313 } 1314 break; 1315 case Begin: 1316 case End: 1317 case dotError: 1318 case Interrupt: 1319 gn = Targ_FindNode(line, TARG_CREATE); 1320 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1321 (void)Lst_AtEnd(targets, gn); 1322 break; 1323 case Default: 1324 gn = Targ_NewGN(".DEFAULT"); 1325 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1326 (void)Lst_AtEnd(targets, gn); 1327 DEFAULT = gn; 1328 break; 1329 case NotParallel: 1330 maxJobs = 1; 1331 break; 1332 case SingleShell: 1333 compatMake = TRUE; 1334 break; 1335 case Order: 1336 predecessor = NULL; 1337 break; 1338 default: 1339 break; 1340 } 1341 } else if (strncmp(line, ".PATH", 5) == 0) { 1342 /* 1343 * .PATH<suffix> has to be handled specially. 1344 * Call on the suffix module to give us a path to 1345 * modify. 1346 */ 1347 Lst path; 1348 1349 specType = ExPath; 1350 path = Suff_GetPath(&line[5]); 1351 if (path == NULL) { 1352 Parse_Error(PARSE_FATAL, 1353 "Suffix '%s' not defined (yet)", 1354 &line[5]); 1355 goto out; 1356 } else { 1357 if (paths == NULL) { 1358 paths = Lst_Init(FALSE); 1359 } 1360 (void)Lst_AtEnd(paths, path); 1361 } 1362 } 1363 } 1364 1365 /* 1366 * Have word in line. Get or create its node and stick it at 1367 * the end of the targets list 1368 */ 1369 if ((specType == Not) && (*line != '\0')) { 1370 if (Dir_HasWildcards(line)) { 1371 /* 1372 * Targets are to be sought only in the current directory, 1373 * so create an empty path for the thing. Note we need to 1374 * use Dir_Destroy in the destruction of the path as the 1375 * Dir module could have added a directory to the path... 1376 */ 1377 Lst emptyPath = Lst_Init(FALSE); 1378 1379 Dir_Expand(line, emptyPath, curTargs); 1380 1381 Lst_Destroy(emptyPath, Dir_Destroy); 1382 } else { 1383 /* 1384 * No wildcards, but we want to avoid code duplication, 1385 * so create a list with the word on it. 1386 */ 1387 (void)Lst_AtEnd(curTargs, line); 1388 } 1389 1390 while(!Lst_IsEmpty(curTargs)) { 1391 char *targName = (char *)Lst_DeQueue(curTargs); 1392 1393 if (!Suff_IsTransform (targName)) { 1394 gn = Targ_FindNode(targName, TARG_CREATE); 1395 } else { 1396 gn = Suff_AddTransform(targName); 1397 } 1398 1399 (void)Lst_AtEnd(targets, gn); 1400 } 1401 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1402 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1403 } 1404 1405 *cp = savec; 1406 /* 1407 * If it is a special type and not .PATH, it's the only target we 1408 * allow on this line... 1409 */ 1410 if (specType != Not && specType != ExPath) { 1411 Boolean warning = FALSE; 1412 1413 while (*cp && (ParseIsEscaped(lstart, cp) || 1414 ((*cp != '!') && (*cp != ':')))) { 1415 if (ParseIsEscaped(lstart, cp) || 1416 (*cp != ' ' && *cp != '\t')) { 1417 warning = TRUE; 1418 } 1419 cp++; 1420 } 1421 if (warning) { 1422 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1423 } 1424 } else { 1425 while (*cp && isspace ((unsigned char)*cp)) { 1426 cp++; 1427 } 1428 } 1429 line = cp; 1430 } while (*line && (ParseIsEscaped(lstart, line) || 1431 ((*line != '!') && (*line != ':')))); 1432 1433 /* 1434 * Don't need the list of target names anymore... 1435 */ 1436 Lst_Destroy(curTargs, NULL); 1437 curTargs = NULL; 1438 1439 if (!Lst_IsEmpty(targets)) { 1440 switch(specType) { 1441 default: 1442 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1443 break; 1444 case Default: 1445 case Begin: 1446 case End: 1447 case dotError: 1448 case Interrupt: 1449 /* 1450 * These four create nodes on which to hang commands, so 1451 * targets shouldn't be empty... 1452 */ 1453 case Not: 1454 /* 1455 * Nothing special here -- targets can be empty if it wants. 1456 */ 1457 break; 1458 } 1459 } 1460 1461 /* 1462 * Have now parsed all the target names. Must parse the operator next. The 1463 * result is left in op . 1464 */ 1465 if (*cp == '!') { 1466 op = OP_FORCE; 1467 } else if (*cp == ':') { 1468 if (cp[1] == ':') { 1469 op = OP_DOUBLEDEP; 1470 cp++; 1471 } else { 1472 op = OP_DEPENDS; 1473 } 1474 } else { 1475 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1476 : "Missing dependency operator"); 1477 goto out; 1478 } 1479 1480 cp++; /* Advance beyond operator */ 1481 1482 Lst_ForEach(targets, ParseDoOp, &op); 1483 1484 /* 1485 * Get to the first source 1486 */ 1487 while (*cp && isspace ((unsigned char)*cp)) { 1488 cp++; 1489 } 1490 line = cp; 1491 1492 /* 1493 * Several special targets take different actions if present with no 1494 * sources: 1495 * a .SUFFIXES line with no sources clears out all old suffixes 1496 * a .PRECIOUS line makes all targets precious 1497 * a .IGNORE line ignores errors for all targets 1498 * a .SILENT line creates silence when making all targets 1499 * a .PATH removes all directories from the search path(s). 1500 */ 1501 if (!*line) { 1502 switch (specType) { 1503 case Suffixes: 1504 Suff_ClearSuffixes(); 1505 break; 1506 case Precious: 1507 allPrecious = TRUE; 1508 break; 1509 case Ignore: 1510 ignoreErrors = TRUE; 1511 break; 1512 case Silent: 1513 beSilent = TRUE; 1514 break; 1515 case ExPath: 1516 Lst_ForEach(paths, ParseClearPath, NULL); 1517 Dir_SetPATH(); 1518 break; 1519 #ifdef POSIX 1520 case Posix: 1521 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1522 break; 1523 #endif 1524 default: 1525 break; 1526 } 1527 } else if (specType == MFlags) { 1528 /* 1529 * Call on functions in main.c to deal with these arguments and 1530 * set the initial character to a null-character so the loop to 1531 * get sources won't get anything 1532 */ 1533 Main_ParseArgLine(line); 1534 *line = '\0'; 1535 } else if (specType == ExShell) { 1536 if (Job_ParseShell(line) != SUCCESS) { 1537 Parse_Error(PARSE_FATAL, "improper shell specification"); 1538 goto out; 1539 } 1540 *line = '\0'; 1541 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1542 *line = '\0'; 1543 } 1544 1545 /* 1546 * NOW GO FOR THE SOURCES 1547 */ 1548 if ((specType == Suffixes) || (specType == ExPath) || 1549 (specType == Includes) || (specType == Libs) || 1550 (specType == Null) || (specType == ExObjdir)) 1551 { 1552 while (*line) { 1553 /* 1554 * If the target was one that doesn't take files as its sources 1555 * but takes something like suffixes, we take each 1556 * space-separated word on the line as a something and deal 1557 * with it accordingly. 1558 * 1559 * If the target was .SUFFIXES, we take each source as a 1560 * suffix and add it to the list of suffixes maintained by the 1561 * Suff module. 1562 * 1563 * If the target was a .PATH, we add the source as a directory 1564 * to search on the search path. 1565 * 1566 * If it was .INCLUDES, the source is taken to be the suffix of 1567 * files which will be #included and whose search path should 1568 * be present in the .INCLUDES variable. 1569 * 1570 * If it was .LIBS, the source is taken to be the suffix of 1571 * files which are considered libraries and whose search path 1572 * should be present in the .LIBS variable. 1573 * 1574 * If it was .NULL, the source is the suffix to use when a file 1575 * has no valid suffix. 1576 * 1577 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1578 * and will cause make to do a new chdir to that path. 1579 */ 1580 while (*cp && !isspace ((unsigned char)*cp)) { 1581 cp++; 1582 } 1583 savec = *cp; 1584 *cp = '\0'; 1585 switch (specType) { 1586 case Suffixes: 1587 Suff_AddSuffix(line, &mainNode); 1588 break; 1589 case ExPath: 1590 Lst_ForEach(paths, ParseAddDir, line); 1591 break; 1592 case Includes: 1593 Suff_AddInclude(line); 1594 break; 1595 case Libs: 1596 Suff_AddLib(line); 1597 break; 1598 case Null: 1599 Suff_SetNull(line); 1600 break; 1601 case ExObjdir: 1602 Main_SetObjdir(line); 1603 break; 1604 default: 1605 break; 1606 } 1607 *cp = savec; 1608 if (savec != '\0') { 1609 cp++; 1610 } 1611 while (*cp && isspace ((unsigned char)*cp)) { 1612 cp++; 1613 } 1614 line = cp; 1615 } 1616 if (paths) { 1617 Lst_Destroy(paths, NULL); 1618 } 1619 if (specType == ExPath) 1620 Dir_SetPATH(); 1621 } else { 1622 while (*line) { 1623 /* 1624 * The targets take real sources, so we must beware of archive 1625 * specifications (i.e. things with left parentheses in them) 1626 * and handle them accordingly. 1627 */ 1628 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1629 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1630 /* 1631 * Only stop for a left parenthesis if it isn't at the 1632 * start of a word (that'll be for variable changes 1633 * later) and isn't preceded by a dollar sign (a dynamic 1634 * source). 1635 */ 1636 break; 1637 } 1638 } 1639 1640 if (*cp == LPAREN) { 1641 sources = Lst_Init(FALSE); 1642 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1643 Parse_Error(PARSE_FATAL, 1644 "Error in source archive spec \"%s\"", line); 1645 goto out; 1646 } 1647 1648 while (!Lst_IsEmpty (sources)) { 1649 gn = (GNode *)Lst_DeQueue(sources); 1650 ParseDoSrc(tOp, gn->name); 1651 } 1652 Lst_Destroy(sources, NULL); 1653 cp = line; 1654 } else { 1655 if (*cp) { 1656 *cp = '\0'; 1657 cp += 1; 1658 } 1659 1660 ParseDoSrc(tOp, line); 1661 } 1662 while (*cp && isspace ((unsigned char)*cp)) { 1663 cp++; 1664 } 1665 line = cp; 1666 } 1667 } 1668 1669 if (mainNode == NULL) { 1670 /* 1671 * If we have yet to decide on a main target to make, in the 1672 * absence of any user input, we want the first target on 1673 * the first dependency line that is actually a real target 1674 * (i.e. isn't a .USE or .EXEC rule) to be made. 1675 */ 1676 Lst_ForEach(targets, ParseFindMain, NULL); 1677 } 1678 1679 out: 1680 if (curTargs) 1681 Lst_Destroy(curTargs, NULL); 1682 } 1683 1684 /*- 1685 *--------------------------------------------------------------------- 1686 * Parse_IsVar -- 1687 * Return TRUE if the passed line is a variable assignment. A variable 1688 * assignment consists of a single word followed by optional whitespace 1689 * followed by either a += or an = operator. 1690 * This function is used both by the Parse_File function and main when 1691 * parsing the command-line arguments. 1692 * 1693 * Input: 1694 * line the line to check 1695 * 1696 * Results: 1697 * TRUE if it is. FALSE if it ain't 1698 * 1699 * Side Effects: 1700 * none 1701 *--------------------------------------------------------------------- 1702 */ 1703 Boolean 1704 Parse_IsVar(char *line) 1705 { 1706 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1707 char ch; 1708 int level = 0; 1709 #define ISEQOPERATOR(c) \ 1710 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1711 1712 /* 1713 * Skip to variable name 1714 */ 1715 for (;(*line == ' ') || (*line == '\t'); line++) 1716 continue; 1717 1718 /* Scan for one of the assignment operators outside a variable expansion */ 1719 while ((ch = *line++) != 0) { 1720 if (ch == '(' || ch == '{') { 1721 level++; 1722 continue; 1723 } 1724 if (ch == ')' || ch == '}') { 1725 level--; 1726 continue; 1727 } 1728 if (level != 0) 1729 continue; 1730 while (ch == ' ' || ch == '\t') { 1731 ch = *line++; 1732 wasSpace = TRUE; 1733 } 1734 if (ch == '=') 1735 return TRUE; 1736 if (*line == '=' && ISEQOPERATOR(ch)) 1737 return TRUE; 1738 if (wasSpace) 1739 return FALSE; 1740 } 1741 1742 return FALSE; 1743 } 1744 1745 /*- 1746 *--------------------------------------------------------------------- 1747 * Parse_DoVar -- 1748 * Take the variable assignment in the passed line and do it in the 1749 * global context. 1750 * 1751 * Note: There is a lexical ambiguity with assignment modifier characters 1752 * in variable names. This routine interprets the character before the = 1753 * as a modifier. Therefore, an assignment like 1754 * C++=/usr/bin/CC 1755 * is interpreted as "C+ +=" instead of "C++ =". 1756 * 1757 * Input: 1758 * line a line guaranteed to be a variable assignment. 1759 * This reduces error checks 1760 * ctxt Context in which to do the assignment 1761 * 1762 * Results: 1763 * none 1764 * 1765 * Side Effects: 1766 * the variable structure of the given variable name is altered in the 1767 * global context. 1768 *--------------------------------------------------------------------- 1769 */ 1770 void 1771 Parse_DoVar(char *line, GNode *ctxt) 1772 { 1773 char *cp; /* pointer into line */ 1774 enum { 1775 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1776 } type; /* Type of assignment */ 1777 char *opc; /* ptr to operator character to 1778 * null-terminate the variable name */ 1779 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1780 * i.e. if any variable expansion was 1781 * performed */ 1782 int depth; 1783 1784 /* 1785 * Skip to variable name 1786 */ 1787 while ((*line == ' ') || (*line == '\t')) { 1788 line++; 1789 } 1790 1791 /* 1792 * Skip to operator character, nulling out whitespace as we go 1793 * XXX Rather than counting () and {} we should look for $ and 1794 * then expand the variable. 1795 */ 1796 for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) { 1797 if (*cp == '(' || *cp == '{') { 1798 depth++; 1799 continue; 1800 } 1801 if (*cp == ')' || *cp == '}') { 1802 depth--; 1803 continue; 1804 } 1805 if (depth == 0 && isspace ((unsigned char)*cp)) { 1806 *cp = '\0'; 1807 } 1808 } 1809 opc = cp-1; /* operator is the previous character */ 1810 *cp++ = '\0'; /* nuke the = */ 1811 1812 /* 1813 * Check operator type 1814 */ 1815 switch (*opc) { 1816 case '+': 1817 type = VAR_APPEND; 1818 *opc = '\0'; 1819 break; 1820 1821 case '?': 1822 /* 1823 * If the variable already has a value, we don't do anything. 1824 */ 1825 *opc = '\0'; 1826 if (Var_Exists(line, ctxt)) { 1827 return; 1828 } else { 1829 type = VAR_NORMAL; 1830 } 1831 break; 1832 1833 case ':': 1834 type = VAR_SUBST; 1835 *opc = '\0'; 1836 break; 1837 1838 case '!': 1839 type = VAR_SHELL; 1840 *opc = '\0'; 1841 break; 1842 1843 default: 1844 #ifdef SUNSHCMD 1845 while (opc > line && *opc != ':') 1846 opc--; 1847 1848 if (strncmp(opc, ":sh", 3) == 0) { 1849 type = VAR_SHELL; 1850 *opc = '\0'; 1851 break; 1852 } 1853 #endif 1854 type = VAR_NORMAL; 1855 break; 1856 } 1857 1858 while (isspace ((unsigned char)*cp)) { 1859 cp++; 1860 } 1861 1862 if (type == VAR_APPEND) { 1863 Var_Append(line, cp, ctxt); 1864 } else if (type == VAR_SUBST) { 1865 /* 1866 * Allow variables in the old value to be undefined, but leave their 1867 * invocation alone -- this is done by forcing oldVars to be false. 1868 * XXX: This can cause recursive variables, but that's not hard to do, 1869 * and this allows someone to do something like 1870 * 1871 * CFLAGS = $(.INCLUDES) 1872 * CFLAGS := -I.. $(CFLAGS) 1873 * 1874 * And not get an error. 1875 */ 1876 Boolean oldOldVars = oldVars; 1877 1878 oldVars = FALSE; 1879 1880 /* 1881 * make sure that we set the variable the first time to nothing 1882 * so that it gets substituted! 1883 */ 1884 if (!Var_Exists(line, ctxt)) 1885 Var_Set(line, "", ctxt, 0); 1886 1887 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1888 oldVars = oldOldVars; 1889 freeCp = TRUE; 1890 1891 Var_Set(line, cp, ctxt, 0); 1892 } else if (type == VAR_SHELL) { 1893 char *res; 1894 const char *error; 1895 1896 if (strchr(cp, '$') != NULL) { 1897 /* 1898 * There's a dollar sign in the command, so perform variable 1899 * expansion on the whole thing. The resulting string will need 1900 * freeing when we're done, so set freeCmd to TRUE. 1901 */ 1902 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1903 freeCp = TRUE; 1904 } 1905 1906 res = Cmd_Exec(cp, &error); 1907 Var_Set(line, res, ctxt, 0); 1908 free(res); 1909 1910 if (error) 1911 Parse_Error(PARSE_WARNING, error, cp); 1912 } else { 1913 /* 1914 * Normal assignment -- just do it. 1915 */ 1916 Var_Set(line, cp, ctxt, 0); 1917 } 1918 if (strcmp(line, MAKEOVERRIDES) == 0) 1919 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1920 else if (strcmp(line, ".CURDIR") == 0) { 1921 /* 1922 * Somone is being (too?) clever... 1923 * Let's pretend they know what they are doing and 1924 * re-initialize the 'cur' Path. 1925 */ 1926 Dir_InitCur(cp); 1927 Dir_SetPATH(); 1928 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 1929 Job_SetPrefix(); 1930 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 1931 Var_Export(cp, 0); 1932 } 1933 if (freeCp) 1934 free(cp); 1935 } 1936 1937 1938 /*- 1939 * ParseAddCmd -- 1940 * Lst_ForEach function to add a command line to all targets 1941 * 1942 * Input: 1943 * gnp the node to which the command is to be added 1944 * cmd the command to add 1945 * 1946 * Results: 1947 * Always 0 1948 * 1949 * Side Effects: 1950 * A new element is added to the commands list of the node. 1951 */ 1952 static int 1953 ParseAddCmd(void *gnp, void *cmd) 1954 { 1955 GNode *gn = (GNode *)gnp; 1956 1957 /* Add to last (ie current) cohort for :: targets */ 1958 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 1959 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 1960 1961 /* if target already supplied, ignore commands */ 1962 if (!(gn->type & OP_HAS_COMMANDS)) { 1963 (void)Lst_AtEnd(gn->commands, cmd); 1964 ParseMark(gn); 1965 } else { 1966 #ifdef notyet 1967 /* XXX: We cannot do this until we fix the tree */ 1968 (void)Lst_AtEnd(gn->commands, cmd); 1969 Parse_Error(PARSE_WARNING, 1970 "overriding commands for target \"%s\"; " 1971 "previous commands defined at %s: %d ignored", 1972 gn->name, gn->fname, gn->lineno); 1973 #else 1974 Parse_Error(PARSE_WARNING, 1975 "duplicate script for target \"%s\" ignored", 1976 gn->name); 1977 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 1978 "using previous script for \"%s\" defined here", 1979 gn->name); 1980 #endif 1981 } 1982 return(0); 1983 } 1984 1985 /*- 1986 *----------------------------------------------------------------------- 1987 * ParseHasCommands -- 1988 * Callback procedure for Parse_File when destroying the list of 1989 * targets on the last dependency line. Marks a target as already 1990 * having commands if it does, to keep from having shell commands 1991 * on multiple dependency lines. 1992 * 1993 * Input: 1994 * gnp Node to examine 1995 * 1996 * Results: 1997 * None 1998 * 1999 * Side Effects: 2000 * OP_HAS_COMMANDS may be set for the target. 2001 * 2002 *----------------------------------------------------------------------- 2003 */ 2004 static void 2005 ParseHasCommands(void *gnp) 2006 { 2007 GNode *gn = (GNode *)gnp; 2008 if (!Lst_IsEmpty(gn->commands)) { 2009 gn->type |= OP_HAS_COMMANDS; 2010 } 2011 } 2012 2013 /*- 2014 *----------------------------------------------------------------------- 2015 * Parse_AddIncludeDir -- 2016 * Add a directory to the path searched for included makefiles 2017 * bracketed by double-quotes. Used by functions in main.c 2018 * 2019 * Input: 2020 * dir The name of the directory to add 2021 * 2022 * Results: 2023 * None. 2024 * 2025 * Side Effects: 2026 * The directory is appended to the list. 2027 * 2028 *----------------------------------------------------------------------- 2029 */ 2030 void 2031 Parse_AddIncludeDir(char *dir) 2032 { 2033 (void)Dir_AddDir(parseIncPath, dir); 2034 } 2035 2036 /*- 2037 *--------------------------------------------------------------------- 2038 * ParseDoInclude -- 2039 * Push to another file. 2040 * 2041 * The input is the line minus the `.'. A file spec is a string 2042 * enclosed in <> or "". The former is looked for only in sysIncPath. 2043 * The latter in . and the directories specified by -I command line 2044 * options 2045 * 2046 * Results: 2047 * None 2048 * 2049 * Side Effects: 2050 * A structure is added to the includes Lst and readProc, lineno, 2051 * fname and curFILE are altered for the new file 2052 *--------------------------------------------------------------------- 2053 */ 2054 2055 static void 2056 Parse_include_file(char *file, Boolean isSystem, int silent) 2057 { 2058 struct loadedfile *lf; 2059 char *fullname; /* full pathname of file */ 2060 char *newName; 2061 char *prefEnd, *incdir; 2062 int fd; 2063 int i; 2064 2065 /* 2066 * Now we know the file's name and its search path, we attempt to 2067 * find the durn thing. A return of NULL indicates the file don't 2068 * exist. 2069 */ 2070 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2071 2072 if (fullname == NULL && !isSystem) { 2073 /* 2074 * Include files contained in double-quotes are first searched for 2075 * relative to the including file's location. We don't want to 2076 * cd there, of course, so we just tack on the old file's 2077 * leading path components and call Dir_FindFile to see if 2078 * we can locate the beast. 2079 */ 2080 2081 incdir = bmake_strdup(curFile->fname); 2082 prefEnd = strrchr(incdir, '/'); 2083 if (prefEnd != NULL) { 2084 *prefEnd = '\0'; 2085 /* Now do lexical processing of leading "../" on the filename */ 2086 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2087 prefEnd = strrchr(incdir + 1, '/'); 2088 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2089 break; 2090 *prefEnd = '\0'; 2091 } 2092 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2093 fullname = Dir_FindFile(newName, parseIncPath); 2094 if (fullname == NULL) 2095 fullname = Dir_FindFile(newName, dirSearchPath); 2096 free(newName); 2097 } 2098 free(incdir); 2099 2100 if (fullname == NULL) { 2101 /* 2102 * Makefile wasn't found in same directory as included makefile. 2103 * Search for it first on the -I search path, 2104 * then on the .PATH search path, if not found in a -I directory. 2105 * If we have a suffix specific path we should use that. 2106 */ 2107 char *suff; 2108 Lst suffPath = NULL; 2109 2110 if ((suff = strrchr(file, '.'))) { 2111 suffPath = Suff_GetPath(suff); 2112 if (suffPath != NULL) { 2113 fullname = Dir_FindFile(file, suffPath); 2114 } 2115 } 2116 if (fullname == NULL) { 2117 fullname = Dir_FindFile(file, parseIncPath); 2118 if (fullname == NULL) { 2119 fullname = Dir_FindFile(file, dirSearchPath); 2120 } 2121 } 2122 } 2123 } 2124 2125 /* Looking for a system file or file still not found */ 2126 if (fullname == NULL) { 2127 /* 2128 * Look for it on the system path 2129 */ 2130 fullname = Dir_FindFile(file, 2131 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2132 } 2133 2134 if (fullname == NULL) { 2135 if (!silent) 2136 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2137 return; 2138 } 2139 2140 /* Actually open the file... */ 2141 fd = open(fullname, O_RDONLY); 2142 if (fd == -1) { 2143 if (!silent) 2144 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2145 free(fullname); 2146 return; 2147 } 2148 2149 /* load it */ 2150 lf = loadfile(fullname, fd); 2151 2152 /* Start reading from this file next */ 2153 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2154 curFile->lf = lf; 2155 } 2156 2157 static void 2158 ParseDoInclude(char *line) 2159 { 2160 char endc; /* the character which ends the file spec */ 2161 char *cp; /* current position in file spec */ 2162 int silent = (*line != 'i') ? 1 : 0; 2163 char *file = &line[7 + silent]; 2164 2165 /* Skip to delimiter character so we know where to look */ 2166 while (*file == ' ' || *file == '\t') 2167 file++; 2168 2169 if (*file != '"' && *file != '<') { 2170 Parse_Error(PARSE_FATAL, 2171 ".include filename must be delimited by '\"' or '<'"); 2172 return; 2173 } 2174 2175 /* 2176 * Set the search path on which to find the include file based on the 2177 * characters which bracket its name. Angle-brackets imply it's 2178 * a system Makefile while double-quotes imply it's a user makefile 2179 */ 2180 if (*file == '<') { 2181 endc = '>'; 2182 } else { 2183 endc = '"'; 2184 } 2185 2186 /* Skip to matching delimiter */ 2187 for (cp = ++file; *cp && *cp != endc; cp++) 2188 continue; 2189 2190 if (*cp != endc) { 2191 Parse_Error(PARSE_FATAL, 2192 "Unclosed %cinclude filename. '%c' expected", 2193 '.', endc); 2194 return; 2195 } 2196 *cp = '\0'; 2197 2198 /* 2199 * Substitute for any variables in the file name before trying to 2200 * find the thing. 2201 */ 2202 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2203 2204 Parse_include_file(file, endc == '>', silent); 2205 free(file); 2206 } 2207 2208 2209 /*- 2210 *--------------------------------------------------------------------- 2211 * ParseSetParseFile -- 2212 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2213 * basename of the given filename 2214 * 2215 * Results: 2216 * None 2217 * 2218 * Side Effects: 2219 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2220 * dirname and basename of the given filename. 2221 *--------------------------------------------------------------------- 2222 */ 2223 static void 2224 ParseSetParseFile(const char *filename) 2225 { 2226 char *slash, *dirname; 2227 const char *pd, *pf; 2228 int len; 2229 2230 slash = strrchr(filename, '/'); 2231 if (slash == NULL) { 2232 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2233 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2234 dirname= NULL; 2235 } else { 2236 len = slash - filename; 2237 dirname = bmake_malloc(len + 1); 2238 memcpy(dirname, filename, len); 2239 dirname[len] = '\0'; 2240 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2241 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2242 } 2243 if (DEBUG(PARSE)) 2244 fprintf(debug_file, "ParseSetParseFile: ${.PARSEDIR} = `%s' " 2245 "${.PARSEFILE} = `%s'\n", pd, pf); 2246 free(dirname); 2247 } 2248 2249 /* 2250 * Track the makefiles we read - so makefiles can 2251 * set dependencies on them. 2252 * Avoid adding anything more than once. 2253 */ 2254 2255 static void 2256 ParseTrackInput(const char *name) 2257 { 2258 char *old; 2259 char *fp = NULL; 2260 size_t name_len = strlen(name); 2261 2262 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2263 if (old) { 2264 /* does it contain name? */ 2265 for (; old != NULL; old = strchr(old, ' ')) { 2266 if (*old == ' ') 2267 old++; 2268 if (memcmp(old, name, name_len) == 0 2269 && (old[name_len] == 0 || old[name_len] == ' ')) 2270 goto cleanup; 2271 } 2272 } 2273 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2274 cleanup: 2275 if (fp) { 2276 free(fp); 2277 } 2278 } 2279 2280 2281 /*- 2282 *--------------------------------------------------------------------- 2283 * Parse_setInput -- 2284 * Start Parsing from the given source 2285 * 2286 * Results: 2287 * None 2288 * 2289 * Side Effects: 2290 * A structure is added to the includes Lst and readProc, lineno, 2291 * fname and curFile are altered for the new file 2292 *--------------------------------------------------------------------- 2293 */ 2294 void 2295 Parse_SetInput(const char *name, int line, int fd, 2296 char *(*nextbuf)(void *, size_t *), void *arg) 2297 { 2298 char *buf; 2299 size_t len; 2300 2301 if (name == NULL) 2302 name = curFile->fname; 2303 else 2304 ParseTrackInput(name); 2305 2306 if (DEBUG(PARSE)) 2307 fprintf(debug_file, "Parse_SetInput: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2308 name, line, fd, nextbuf, arg); 2309 2310 if (fd == -1 && nextbuf == NULL) 2311 /* sanity */ 2312 return; 2313 2314 if (curFile != NULL) 2315 /* Save exiting file info */ 2316 Lst_AtFront(includes, curFile); 2317 2318 /* Allocate and fill in new structure */ 2319 curFile = bmake_malloc(sizeof *curFile); 2320 2321 /* 2322 * Once the previous state has been saved, we can get down to reading 2323 * the new file. We set up the name of the file to be the absolute 2324 * name of the include file so error messages refer to the right 2325 * place. 2326 */ 2327 curFile->fname = name; 2328 curFile->lineno = line; 2329 curFile->first_lineno = line; 2330 curFile->nextbuf = nextbuf; 2331 curFile->nextbuf_arg = arg; 2332 curFile->lf = NULL; 2333 2334 assert(nextbuf != NULL); 2335 2336 /* Get first block of input data */ 2337 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2338 if (buf == NULL) { 2339 /* Was all a waste of time ... */ 2340 free(curFile); 2341 return; 2342 } 2343 curFile->P_str = buf; 2344 curFile->P_ptr = buf; 2345 curFile->P_end = buf+len; 2346 2347 curFile->cond_depth = Cond_save_depth(); 2348 ParseSetParseFile(name); 2349 } 2350 2351 #ifdef SYSVINCLUDE 2352 /*- 2353 *--------------------------------------------------------------------- 2354 * ParseTraditionalInclude -- 2355 * Push to another file. 2356 * 2357 * The input is the current line. The file name(s) are 2358 * following the "include". 2359 * 2360 * Results: 2361 * None 2362 * 2363 * Side Effects: 2364 * A structure is added to the includes Lst and readProc, lineno, 2365 * fname and curFILE are altered for the new file 2366 *--------------------------------------------------------------------- 2367 */ 2368 static void 2369 ParseTraditionalInclude(char *line) 2370 { 2371 char *cp; /* current position in file spec */ 2372 int done = 0; 2373 int silent = (line[0] != 'i') ? 1 : 0; 2374 char *file = &line[silent + 7]; 2375 char *all_files; 2376 2377 if (DEBUG(PARSE)) { 2378 fprintf(debug_file, "ParseTraditionalInclude: %s\n", file); 2379 } 2380 2381 /* 2382 * Skip over whitespace 2383 */ 2384 while (isspace((unsigned char)*file)) 2385 file++; 2386 2387 /* 2388 * Substitute for any variables in the file name before trying to 2389 * find the thing. 2390 */ 2391 all_files = Var_Subst(NULL, file, VAR_CMD, FALSE); 2392 2393 if (*file == '\0') { 2394 Parse_Error(PARSE_FATAL, 2395 "Filename missing from \"include\""); 2396 return; 2397 } 2398 2399 for (file = all_files; !done; file = cp + 1) { 2400 /* Skip to end of line or next whitespace */ 2401 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2402 continue; 2403 2404 if (*cp) 2405 *cp = '\0'; 2406 else 2407 done = 1; 2408 2409 Parse_include_file(file, FALSE, silent); 2410 } 2411 free(all_files); 2412 } 2413 #endif 2414 2415 #ifdef GMAKEEXPORT 2416 /*- 2417 *--------------------------------------------------------------------- 2418 * ParseGmakeExport -- 2419 * Parse export <variable>=<value> 2420 * 2421 * And set the environment with it. 2422 * 2423 * Results: 2424 * None 2425 * 2426 * Side Effects: 2427 * None 2428 *--------------------------------------------------------------------- 2429 */ 2430 static void 2431 ParseGmakeExport(char *line) 2432 { 2433 char *variable = &line[6]; 2434 char *value; 2435 2436 if (DEBUG(PARSE)) { 2437 fprintf(debug_file, "ParseGmakeExport: %s\n", variable); 2438 } 2439 2440 /* 2441 * Skip over whitespace 2442 */ 2443 while (isspace((unsigned char)*variable)) 2444 variable++; 2445 2446 for (value = variable; *value && *value != '='; value++) 2447 continue; 2448 2449 if (*value != '=') { 2450 Parse_Error(PARSE_FATAL, 2451 "Variable/Value missing from \"export\""); 2452 return; 2453 } 2454 2455 /* 2456 * Expand the value before putting it in the environment. 2457 */ 2458 value = Var_Subst(NULL, value, VAR_CMD, FALSE); 2459 setenv(variable, value, 1); 2460 } 2461 #endif 2462 2463 /*- 2464 *--------------------------------------------------------------------- 2465 * ParseEOF -- 2466 * Called when EOF is reached in the current file. If we were reading 2467 * an include file, the includes stack is popped and things set up 2468 * to go back to reading the previous file at the previous location. 2469 * 2470 * Results: 2471 * CONTINUE if there's more to do. DONE if not. 2472 * 2473 * Side Effects: 2474 * The old curFILE, is closed. The includes list is shortened. 2475 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2476 *--------------------------------------------------------------------- 2477 */ 2478 static int 2479 ParseEOF(void) 2480 { 2481 char *ptr; 2482 size_t len; 2483 2484 assert(curFile->nextbuf != NULL); 2485 2486 /* get next input buffer, if any */ 2487 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2488 curFile->P_ptr = ptr; 2489 curFile->P_str = ptr; 2490 curFile->P_end = ptr + len; 2491 curFile->lineno = curFile->first_lineno; 2492 if (ptr != NULL) { 2493 /* Iterate again */ 2494 return CONTINUE; 2495 } 2496 2497 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2498 Cond_restore_depth(curFile->cond_depth); 2499 2500 if (curFile->lf != NULL) { 2501 loadedfile_destroy(curFile->lf); 2502 curFile->lf = NULL; 2503 } 2504 2505 /* Dispose of curFile info */ 2506 /* Leak curFile->fname because all the gnodes have pointers to it */ 2507 free(curFile->P_str); 2508 free(curFile); 2509 2510 curFile = Lst_DeQueue(includes); 2511 2512 if (curFile == NULL) { 2513 /* We've run out of input */ 2514 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2515 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2516 return DONE; 2517 } 2518 2519 if (DEBUG(PARSE)) 2520 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2521 curFile->fname, curFile->lineno); 2522 2523 /* Restore the PARSEDIR/PARSEFILE variables */ 2524 ParseSetParseFile(curFile->fname); 2525 return (CONTINUE); 2526 } 2527 2528 #define PARSE_RAW 1 2529 #define PARSE_SKIP 2 2530 2531 static char * 2532 ParseGetLine(int flags, int *length) 2533 { 2534 IFile *cf = curFile; 2535 char *ptr; 2536 char ch; 2537 char *line; 2538 char *line_end; 2539 char *escaped; 2540 char *comment; 2541 char *tp; 2542 2543 /* Loop through blank lines and comment lines */ 2544 for (;;) { 2545 cf->lineno++; 2546 line = cf->P_ptr; 2547 ptr = line; 2548 line_end = line; 2549 escaped = NULL; 2550 comment = NULL; 2551 for (;;) { 2552 if (cf->P_end != NULL && ptr == cf->P_end) { 2553 /* end of buffer */ 2554 ch = 0; 2555 break; 2556 } 2557 ch = *ptr; 2558 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2559 if (cf->P_end == NULL) 2560 /* End of string (aka for loop) data */ 2561 break; 2562 if (cf->nextbuf != NULL) { 2563 /* 2564 * End of this buffer; return EOF and outer logic 2565 * will get the next one. (eww) 2566 */ 2567 break; 2568 } 2569 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2570 return NULL; 2571 } 2572 2573 if (ch == '\\') { 2574 /* Don't treat next character as special, remember first one */ 2575 if (escaped == NULL) 2576 escaped = ptr; 2577 if (ptr[1] == '\n') 2578 cf->lineno++; 2579 ptr += 2; 2580 line_end = ptr; 2581 continue; 2582 } 2583 if (ch == '#' && comment == NULL) { 2584 /* Remember first '#' for comment stripping */ 2585 /* Unless previous char was '[', as in modifier :[#] */ 2586 if (!(ptr > line && ptr[-1] == '[')) 2587 comment = line_end; 2588 } 2589 ptr++; 2590 if (ch == '\n') 2591 break; 2592 if (!isspace((unsigned char)ch)) 2593 /* We are not interested in trailing whitespace */ 2594 line_end = ptr; 2595 } 2596 2597 /* Save next 'to be processed' location */ 2598 cf->P_ptr = ptr; 2599 2600 /* Check we have a non-comment, non-blank line */ 2601 if (line_end == line || comment == line) { 2602 if (ch == 0) 2603 /* At end of file */ 2604 return NULL; 2605 /* Parse another line */ 2606 continue; 2607 } 2608 2609 /* We now have a line of data */ 2610 *line_end = 0; 2611 2612 if (flags & PARSE_RAW) { 2613 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2614 *length = line_end - line; 2615 return line; 2616 } 2617 2618 if (flags & PARSE_SKIP) { 2619 /* Completely ignore non-directives */ 2620 if (line[0] != '.') 2621 continue; 2622 /* We could do more of the .else/.elif/.endif checks here */ 2623 } 2624 break; 2625 } 2626 2627 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2628 if (comment != NULL && line[0] != '\t') { 2629 line_end = comment; 2630 *line_end = 0; 2631 } 2632 2633 /* If we didn't see a '\\' then the in-situ data is fine */ 2634 if (escaped == NULL) { 2635 *length = line_end - line; 2636 return line; 2637 } 2638 2639 /* Remove escapes from '\n' and '#' */ 2640 tp = ptr = escaped; 2641 escaped = line; 2642 for (; ; *tp++ = ch) { 2643 ch = *ptr++; 2644 if (ch != '\\') { 2645 if (ch == 0) 2646 break; 2647 continue; 2648 } 2649 2650 ch = *ptr++; 2651 if (ch == 0) { 2652 /* Delete '\\' at end of buffer */ 2653 tp--; 2654 break; 2655 } 2656 2657 if (ch == '#' && line[0] != '\t') 2658 /* Delete '\\' from before '#' on non-command lines */ 2659 continue; 2660 2661 if (ch != '\n') { 2662 /* Leave '\\' in buffer for later */ 2663 *tp++ = '\\'; 2664 /* Make sure we don't delete an escaped ' ' from the line end */ 2665 escaped = tp + 1; 2666 continue; 2667 } 2668 2669 /* Escaped '\n' replace following whitespace with a single ' ' */ 2670 while (ptr[0] == ' ' || ptr[0] == '\t') 2671 ptr++; 2672 ch = ' '; 2673 } 2674 2675 /* Delete any trailing spaces - eg from empty continuations */ 2676 while (tp > escaped && isspace((unsigned char)tp[-1])) 2677 tp--; 2678 2679 *tp = 0; 2680 *length = tp - line; 2681 return line; 2682 } 2683 2684 /*- 2685 *--------------------------------------------------------------------- 2686 * ParseReadLine -- 2687 * Read an entire line from the input file. Called only by Parse_File. 2688 * 2689 * Results: 2690 * A line w/o its newline 2691 * 2692 * Side Effects: 2693 * Only those associated with reading a character 2694 *--------------------------------------------------------------------- 2695 */ 2696 static char * 2697 ParseReadLine(void) 2698 { 2699 char *line; /* Result */ 2700 int lineLength; /* Length of result */ 2701 int lineno; /* Saved line # */ 2702 int rval; 2703 2704 for (;;) { 2705 line = ParseGetLine(0, &lineLength); 2706 if (line == NULL) 2707 return NULL; 2708 2709 if (line[0] != '.') 2710 return line; 2711 2712 /* 2713 * The line might be a conditional. Ask the conditional module 2714 * about it and act accordingly 2715 */ 2716 switch (Cond_Eval(line)) { 2717 case COND_SKIP: 2718 /* Skip to next conditional that evaluates to COND_PARSE. */ 2719 do { 2720 line = ParseGetLine(PARSE_SKIP, &lineLength); 2721 } while (line && Cond_Eval(line) != COND_PARSE); 2722 if (line == NULL) 2723 break; 2724 continue; 2725 case COND_PARSE: 2726 continue; 2727 case COND_INVALID: /* Not a conditional line */ 2728 /* Check for .for loops */ 2729 rval = For_Eval(line); 2730 if (rval == 0) 2731 /* Not a .for line */ 2732 break; 2733 if (rval < 0) 2734 /* Syntax error - error printed, ignore line */ 2735 continue; 2736 /* Start of a .for loop */ 2737 lineno = curFile->lineno; 2738 /* Accumulate loop lines until matching .endfor */ 2739 do { 2740 line = ParseGetLine(PARSE_RAW, &lineLength); 2741 if (line == NULL) { 2742 Parse_Error(PARSE_FATAL, 2743 "Unexpected end of file in for loop."); 2744 break; 2745 } 2746 } while (For_Accum(line)); 2747 /* Stash each iteration as a new 'input file' */ 2748 For_Run(lineno); 2749 /* Read next line from for-loop buffer */ 2750 continue; 2751 } 2752 return (line); 2753 } 2754 } 2755 2756 /*- 2757 *----------------------------------------------------------------------- 2758 * ParseFinishLine -- 2759 * Handle the end of a dependency group. 2760 * 2761 * Results: 2762 * Nothing. 2763 * 2764 * Side Effects: 2765 * inLine set FALSE. 'targets' list destroyed. 2766 * 2767 *----------------------------------------------------------------------- 2768 */ 2769 static void 2770 ParseFinishLine(void) 2771 { 2772 if (inLine) { 2773 Lst_ForEach(targets, Suff_EndTransform, NULL); 2774 Lst_Destroy(targets, ParseHasCommands); 2775 targets = NULL; 2776 inLine = FALSE; 2777 } 2778 } 2779 2780 2781 /*- 2782 *--------------------------------------------------------------------- 2783 * Parse_File -- 2784 * Parse a file into its component parts, incorporating it into the 2785 * current dependency graph. This is the main function and controls 2786 * almost every other function in this module 2787 * 2788 * Input: 2789 * name the name of the file being read 2790 * fd Open file to makefile to parse 2791 * 2792 * Results: 2793 * None 2794 * 2795 * Side Effects: 2796 * closes fd. 2797 * Loads. Nodes are added to the list of all targets, nodes and links 2798 * are added to the dependency graph. etc. etc. etc. 2799 *--------------------------------------------------------------------- 2800 */ 2801 void 2802 Parse_File(const char *name, int fd) 2803 { 2804 char *cp; /* pointer into the line */ 2805 char *line; /* the line we're working on */ 2806 struct loadedfile *lf; 2807 2808 lf = loadfile(name, fd); 2809 2810 inLine = FALSE; 2811 fatals = 0; 2812 2813 if (name == NULL) { 2814 name = "(stdin)"; 2815 } 2816 2817 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2818 curFile->lf = lf; 2819 2820 do { 2821 for (; (line = ParseReadLine()) != NULL; ) { 2822 if (DEBUG(PARSE)) 2823 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2824 curFile->lineno, line); 2825 if (*line == '.') { 2826 /* 2827 * Lines that begin with the special character may be 2828 * include or undef directives. 2829 * On the other hand they can be suffix rules (.c.o: ...) 2830 * or just dependencies for filenames that start '.'. 2831 */ 2832 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 2833 continue; 2834 } 2835 if (strncmp(cp, "include", 7) == 0 || 2836 ((cp[0] == 's' || cp[0] == '-') && 2837 strncmp(&cp[1], "include", 7) == 0)) { 2838 ParseDoInclude(cp); 2839 continue; 2840 } 2841 if (strncmp(cp, "undef", 5) == 0) { 2842 char *cp2; 2843 for (cp += 5; isspace((unsigned char) *cp); cp++) 2844 continue; 2845 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2846 (*cp2 != '\0'); cp2++) 2847 continue; 2848 *cp2 = '\0'; 2849 Var_Delete(cp, VAR_GLOBAL); 2850 continue; 2851 } else if (strncmp(cp, "export", 6) == 0) { 2852 for (cp += 6; isspace((unsigned char) *cp); cp++) 2853 continue; 2854 Var_Export(cp, 1); 2855 continue; 2856 } else if (strncmp(cp, "unexport", 8) == 0) { 2857 Var_UnExport(cp); 2858 continue; 2859 } else if (strncmp(cp, "info", 4) == 0 || 2860 strncmp(cp, "error", 5) == 0 || 2861 strncmp(cp, "warning", 7) == 0) { 2862 if (ParseMessage(cp)) 2863 continue; 2864 } 2865 } 2866 2867 if (*line == '\t') { 2868 /* 2869 * If a line starts with a tab, it can only hope to be 2870 * a creation command. 2871 */ 2872 cp = line + 1; 2873 shellCommand: 2874 for (; isspace ((unsigned char)*cp); cp++) { 2875 continue; 2876 } 2877 if (*cp) { 2878 if (!inLine) 2879 Parse_Error(PARSE_FATAL, 2880 "Unassociated shell command \"%s\"", 2881 cp); 2882 /* 2883 * So long as it's not a blank line and we're actually 2884 * in a dependency spec, add the command to the list of 2885 * commands of all targets in the dependency spec 2886 */ 2887 if (targets) { 2888 cp = bmake_strdup(cp); 2889 Lst_ForEach(targets, ParseAddCmd, cp); 2890 #ifdef CLEANUP 2891 Lst_AtEnd(targCmds, cp); 2892 #endif 2893 } 2894 } 2895 continue; 2896 } 2897 2898 #ifdef SYSVINCLUDE 2899 if (((strncmp(line, "include", 7) == 0 && 2900 isspace((unsigned char) line[7])) || 2901 ((line[0] == 's' || line[0] == '-') && 2902 strncmp(&line[1], "include", 7) == 0 && 2903 isspace((unsigned char) line[8]))) && 2904 strchr(line, ':') == NULL) { 2905 /* 2906 * It's an S3/S5-style "include". 2907 */ 2908 ParseTraditionalInclude(line); 2909 continue; 2910 } 2911 #endif 2912 #ifdef GMAKEEXPORT 2913 if (strncmp(line, "export", 6) == 0 && 2914 isspace((unsigned char) line[6]) && 2915 strchr(line, ':') == NULL) { 2916 /* 2917 * It's a Gmake "export". 2918 */ 2919 ParseGmakeExport(line); 2920 continue; 2921 } 2922 #endif 2923 if (Parse_IsVar(line)) { 2924 ParseFinishLine(); 2925 Parse_DoVar(line, VAR_GLOBAL); 2926 continue; 2927 } 2928 2929 #ifndef POSIX 2930 /* 2931 * To make life easier on novices, if the line is indented we 2932 * first make sure the line has a dependency operator in it. 2933 * If it doesn't have an operator and we're in a dependency 2934 * line's script, we assume it's actually a shell command 2935 * and add it to the current list of targets. 2936 */ 2937 cp = line; 2938 if (isspace((unsigned char) line[0])) { 2939 while ((*cp != '\0') && isspace((unsigned char) *cp)) 2940 cp++; 2941 while (*cp && (ParseIsEscaped(line, cp) || 2942 (*cp != ':') && (*cp != '!'))) { 2943 cp++; 2944 } 2945 if (*cp == '\0') { 2946 if (inLine) { 2947 Parse_Error(PARSE_WARNING, 2948 "Shell command needs a leading tab"); 2949 goto shellCommand; 2950 } 2951 } 2952 } 2953 #endif 2954 ParseFinishLine(); 2955 2956 /* 2957 * For some reason - probably to make the parser impossible - 2958 * a ';' can be used to separate commands from dependencies. 2959 * Attempt to avoid ';' inside substitution patterns. 2960 */ 2961 { 2962 int level = 0; 2963 2964 for (cp = line; *cp != 0; cp++) { 2965 if (*cp == '\\' && cp[1] != 0) { 2966 cp++; 2967 continue; 2968 } 2969 if (*cp == '$' && 2970 (cp[1] == '(' || cp[1] == '{')) { 2971 level++; 2972 continue; 2973 } 2974 if (level > 0) { 2975 if (*cp == ')' || *cp == '}') { 2976 level--; 2977 continue; 2978 } 2979 } else if (*cp == ';') { 2980 break; 2981 } 2982 } 2983 } 2984 if (*cp != 0) 2985 /* Terminate the dependency list at the ';' */ 2986 *cp++ = 0; 2987 else 2988 cp = NULL; 2989 2990 /* 2991 * We now know it's a dependency line so it needs to have all 2992 * variables expanded before being parsed. Tell the variable 2993 * module to complain if some variable is undefined... 2994 */ 2995 line = Var_Subst(NULL, line, VAR_CMD, TRUE); 2996 2997 /* 2998 * Need a non-circular list for the target nodes 2999 */ 3000 if (targets) 3001 Lst_Destroy(targets, NULL); 3002 3003 targets = Lst_Init(FALSE); 3004 inLine = TRUE; 3005 3006 ParseDoDependency(line); 3007 free(line); 3008 3009 /* If there were commands after a ';', add them now */ 3010 if (cp != NULL) { 3011 goto shellCommand; 3012 } 3013 } 3014 /* 3015 * Reached EOF, but it may be just EOF of an include file... 3016 */ 3017 } while (ParseEOF() == CONTINUE); 3018 3019 if (fatals) { 3020 (void)fflush(stdout); 3021 (void)fprintf(stderr, 3022 "%s: Fatal errors encountered -- cannot continue", 3023 progname); 3024 PrintOnError(NULL, NULL); 3025 exit(1); 3026 } 3027 } 3028 3029 /*- 3030 *--------------------------------------------------------------------- 3031 * Parse_Init -- 3032 * initialize the parsing module 3033 * 3034 * Results: 3035 * none 3036 * 3037 * Side Effects: 3038 * the parseIncPath list is initialized... 3039 *--------------------------------------------------------------------- 3040 */ 3041 void 3042 Parse_Init(void) 3043 { 3044 mainNode = NULL; 3045 parseIncPath = Lst_Init(FALSE); 3046 sysIncPath = Lst_Init(FALSE); 3047 defIncPath = Lst_Init(FALSE); 3048 includes = Lst_Init(FALSE); 3049 #ifdef CLEANUP 3050 targCmds = Lst_Init(FALSE); 3051 #endif 3052 } 3053 3054 void 3055 Parse_End(void) 3056 { 3057 #ifdef CLEANUP 3058 Lst_Destroy(targCmds, (FreeProc *)free); 3059 if (targets) 3060 Lst_Destroy(targets, NULL); 3061 Lst_Destroy(defIncPath, Dir_Destroy); 3062 Lst_Destroy(sysIncPath, Dir_Destroy); 3063 Lst_Destroy(parseIncPath, Dir_Destroy); 3064 Lst_Destroy(includes, NULL); /* Should be empty now */ 3065 #endif 3066 } 3067 3068 3069 /*- 3070 *----------------------------------------------------------------------- 3071 * Parse_MainName -- 3072 * Return a Lst of the main target to create for main()'s sake. If 3073 * no such target exists, we Punt with an obnoxious error message. 3074 * 3075 * Results: 3076 * A Lst of the single node to create. 3077 * 3078 * Side Effects: 3079 * None. 3080 * 3081 *----------------------------------------------------------------------- 3082 */ 3083 Lst 3084 Parse_MainName(void) 3085 { 3086 Lst mainList; /* result list */ 3087 3088 mainList = Lst_Init(FALSE); 3089 3090 if (mainNode == NULL) { 3091 Punt("no target to make."); 3092 /*NOTREACHED*/ 3093 } else if (mainNode->type & OP_DOUBLEDEP) { 3094 (void)Lst_AtEnd(mainList, mainNode); 3095 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3096 } 3097 else 3098 (void)Lst_AtEnd(mainList, mainNode); 3099 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3100 return (mainList); 3101 } 3102 3103 /*- 3104 *----------------------------------------------------------------------- 3105 * ParseMark -- 3106 * Add the filename and lineno to the GNode so that we remember 3107 * where it was first defined. 3108 * 3109 * Side Effects: 3110 * None. 3111 * 3112 *----------------------------------------------------------------------- 3113 */ 3114 static void 3115 ParseMark(GNode *gn) 3116 { 3117 gn->fname = curFile->fname; 3118 gn->lineno = curFile->lineno; 3119 } 3120