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 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: parse.c,v 1.185 2012/06/12 19:21:51 joerg 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 1.185 2012/06/12 19:21:51 joerg 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/stat.h> 128 #include <assert.h> 129 #include <ctype.h> 130 #include <errno.h> 131 #include <fcntl.h> 132 #include <stdarg.h> 133 #include <stdio.h> 134 135 #include "make.h" 136 #include "hash.h" 137 #include "dir.h" 138 #include "job.h" 139 #include "buf.h" 140 #include "pathnames.h" 141 142 #ifdef HAVE_MMAP 143 #include <sys/mman.h> 144 145 #ifndef MAP_COPY 146 #define MAP_COPY MAP_PRIVATE 147 #endif 148 #ifndef MAP_FILE 149 #define MAP_FILE 0 150 #endif 151 #endif 152 153 //////////////////////////////////////////////////////////// 154 // types and constants 155 156 /* 157 * Structure for a file being read ("included file") 158 */ 159 typedef struct IFile { 160 const char *fname; /* name of file */ 161 int lineno; /* current line number in file */ 162 int first_lineno; /* line number of start of text */ 163 int cond_depth; /* 'if' nesting when file opened */ 164 char *P_str; /* point to base of string buffer */ 165 char *P_ptr; /* point to next char of string buffer */ 166 char *P_end; /* point to the end of string buffer */ 167 char *(*nextbuf)(void *, size_t *); /* Function to get more data */ 168 void *nextbuf_arg; /* Opaque arg for nextbuf() */ 169 struct loadedfile *lf; /* loadedfile object, if any */ 170 } IFile; 171 172 173 /* 174 * These values are returned by ParseEOF to tell Parse_File whether to 175 * CONTINUE parsing, i.e. it had only reached the end of an include file, 176 * or if it's DONE. 177 */ 178 #define CONTINUE 1 179 #define DONE 0 180 181 /* 182 * Tokens for target attributes 183 */ 184 typedef enum { 185 Begin, /* .BEGIN */ 186 Default, /* .DEFAULT */ 187 End, /* .END */ 188 dotError, /* .ERROR */ 189 Ignore, /* .IGNORE */ 190 Includes, /* .INCLUDES */ 191 Interrupt, /* .INTERRUPT */ 192 Libs, /* .LIBS */ 193 Meta, /* .META */ 194 MFlags, /* .MFLAGS or .MAKEFLAGS */ 195 Main, /* .MAIN and we don't have anything user-specified to 196 * make */ 197 NoExport, /* .NOEXPORT */ 198 NoMeta, /* .NOMETA */ 199 NoMetaCmp, /* .NOMETA_CMP */ 200 NoPath, /* .NOPATH */ 201 Not, /* Not special */ 202 NotParallel, /* .NOTPARALLEL */ 203 Null, /* .NULL */ 204 ExObjdir, /* .OBJDIR */ 205 Order, /* .ORDER */ 206 Parallel, /* .PARALLEL */ 207 ExPath, /* .PATH */ 208 Phony, /* .PHONY */ 209 #ifdef POSIX 210 Posix, /* .POSIX */ 211 #endif 212 Precious, /* .PRECIOUS */ 213 ExShell, /* .SHELL */ 214 Silent, /* .SILENT */ 215 SingleShell, /* .SINGLESHELL */ 216 Suffixes, /* .SUFFIXES */ 217 Wait, /* .WAIT */ 218 Attribute /* Generic attribute */ 219 } ParseSpecial; 220 221 /* 222 * Other tokens 223 */ 224 #define LPAREN '(' 225 #define RPAREN ')' 226 227 228 //////////////////////////////////////////////////////////// 229 // result data 230 231 /* 232 * The main target to create. This is the first target on the first 233 * dependency line in the first makefile. 234 */ 235 static GNode *mainNode; 236 237 //////////////////////////////////////////////////////////// 238 // eval state 239 240 /* targets we're working on */ 241 static Lst targets; 242 243 #ifdef CLEANUP 244 /* command lines for targets */ 245 static Lst targCmds; 246 #endif 247 248 /* 249 * specType contains the SPECial TYPE of the current target. It is 250 * Not if the target is unspecial. If it *is* special, however, the children 251 * are linked as children of the parent but not vice versa. This variable is 252 * set in ParseDoDependency 253 */ 254 static ParseSpecial specType; 255 256 /* 257 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER 258 * seen, then set to each successive source on the line. 259 */ 260 static GNode *predecessor; 261 262 //////////////////////////////////////////////////////////// 263 // parser state 264 265 /* true if currently in a dependency line or its commands */ 266 static Boolean inLine; 267 268 /* number of fatal errors */ 269 static int fatals = 0; 270 271 /* 272 * Variables for doing includes 273 */ 274 275 /* current file being read */ 276 static IFile *curFile; 277 278 /* stack of IFiles generated by .includes */ 279 static Lst includes; 280 281 /* include paths (lists of directories) */ 282 Lst parseIncPath; /* dirs for "..." includes */ 283 Lst sysIncPath; /* dirs for <...> includes */ 284 Lst defIncPath; /* default for sysIncPath */ 285 286 //////////////////////////////////////////////////////////// 287 // parser tables 288 289 /* 290 * The parseKeywords table is searched using binary search when deciding 291 * if a target or source is special. The 'spec' field is the ParseSpecial 292 * type of the keyword ("Not" if the keyword isn't special as a target) while 293 * the 'op' field is the operator to apply to the list of targets if the 294 * keyword is used as a source ("0" if the keyword isn't special as a source) 295 */ 296 static const struct { 297 const char *name; /* Name of keyword */ 298 ParseSpecial spec; /* Type when used as a target */ 299 int op; /* Operator when used as a source */ 300 } parseKeywords[] = { 301 { ".BEGIN", Begin, 0 }, 302 { ".DEFAULT", Default, 0 }, 303 { ".END", End, 0 }, 304 { ".ERROR", dotError, 0 }, 305 { ".EXEC", Attribute, OP_EXEC }, 306 { ".IGNORE", Ignore, OP_IGNORE }, 307 { ".INCLUDES", Includes, 0 }, 308 { ".INTERRUPT", Interrupt, 0 }, 309 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 310 { ".JOIN", Attribute, OP_JOIN }, 311 { ".LIBS", Libs, 0 }, 312 { ".MADE", Attribute, OP_MADE }, 313 { ".MAIN", Main, 0 }, 314 { ".MAKE", Attribute, OP_MAKE }, 315 { ".MAKEFLAGS", MFlags, 0 }, 316 { ".META", Meta, OP_META }, 317 { ".MFLAGS", MFlags, 0 }, 318 { ".NOMETA", NoMeta, OP_NOMETA }, 319 { ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP }, 320 { ".NOPATH", NoPath, OP_NOPATH }, 321 { ".NOTMAIN", Attribute, OP_NOTMAIN }, 322 { ".NOTPARALLEL", NotParallel, 0 }, 323 { ".NO_PARALLEL", NotParallel, 0 }, 324 { ".NULL", Null, 0 }, 325 { ".OBJDIR", ExObjdir, 0 }, 326 { ".OPTIONAL", Attribute, OP_OPTIONAL }, 327 { ".ORDER", Order, 0 }, 328 { ".PARALLEL", Parallel, 0 }, 329 { ".PATH", ExPath, 0 }, 330 { ".PHONY", Phony, OP_PHONY }, 331 #ifdef POSIX 332 { ".POSIX", Posix, 0 }, 333 #endif 334 { ".PRECIOUS", Precious, OP_PRECIOUS }, 335 { ".RECURSIVE", Attribute, OP_MAKE }, 336 { ".SHELL", ExShell, 0 }, 337 { ".SILENT", Silent, OP_SILENT }, 338 { ".SINGLESHELL", SingleShell, 0 }, 339 { ".SUFFIXES", Suffixes, 0 }, 340 { ".USE", Attribute, OP_USE }, 341 { ".USEBEFORE", Attribute, OP_USEBEFORE }, 342 { ".WAIT", Wait, 0 }, 343 }; 344 345 //////////////////////////////////////////////////////////// 346 // local functions 347 348 static int ParseIsEscaped(const char *, const char *); 349 static void ParseErrorInternal(const char *, size_t, int, const char *, ...) 350 MAKE_ATTR_PRINTFLIKE(4,5); 351 static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list) 352 MAKE_ATTR_PRINTFLIKE(5, 0); 353 static int ParseFindKeyword(const char *); 354 static int ParseLinkSrc(void *, void *); 355 static int ParseDoOp(void *, void *); 356 static void ParseDoSrc(int, const char *); 357 static int ParseFindMain(void *, void *); 358 static int ParseAddDir(void *, void *); 359 static int ParseClearPath(void *, void *); 360 static void ParseDoDependency(char *); 361 static int ParseAddCmd(void *, void *); 362 static void ParseHasCommands(void *); 363 static void ParseDoInclude(char *); 364 static void ParseSetParseFile(const char *); 365 #ifdef SYSVINCLUDE 366 static void ParseTraditionalInclude(char *); 367 #endif 368 #ifdef GMAKEEXPORT 369 static void ParseGmakeExport(char *); 370 #endif 371 static int ParseEOF(void); 372 static char *ParseReadLine(void); 373 static void ParseFinishLine(void); 374 static void ParseMark(GNode *); 375 376 //////////////////////////////////////////////////////////// 377 // file loader 378 379 struct loadedfile { 380 const char *path; /* name, for error reports */ 381 char *buf; /* contents buffer */ 382 size_t len; /* length of contents */ 383 size_t maplen; /* length of mmap area, or 0 */ 384 Boolean used; /* XXX: have we used the data yet */ 385 }; 386 387 /* 388 * Constructor/destructor for loadedfile 389 */ 390 static struct loadedfile * 391 loadedfile_create(const char *path) 392 { 393 struct loadedfile *lf; 394 395 lf = bmake_malloc(sizeof(*lf)); 396 lf->path = (path == NULL ? "(stdin)" : path); 397 lf->buf = NULL; 398 lf->len = 0; 399 lf->maplen = 0; 400 lf->used = FALSE; 401 return lf; 402 } 403 404 static void 405 loadedfile_destroy(struct loadedfile *lf) 406 { 407 if (lf->buf != NULL) { 408 if (lf->maplen > 0) { 409 #ifdef HAVE_MMAP 410 munmap(lf->buf, lf->maplen); 411 #endif 412 } else { 413 free(lf->buf); 414 } 415 } 416 free(lf); 417 } 418 419 /* 420 * nextbuf() operation for loadedfile, as needed by the weird and twisted 421 * logic below. Once that's cleaned up, we can get rid of lf->used... 422 */ 423 static char * 424 loadedfile_nextbuf(void *x, size_t *len) 425 { 426 struct loadedfile *lf = x; 427 428 if (lf->used) { 429 return NULL; 430 } 431 lf->used = TRUE; 432 *len = lf->len; 433 return lf->buf; 434 } 435 436 /* 437 * Try to get the size of a file. 438 */ 439 static ReturnStatus 440 load_getsize(int fd, size_t *ret) 441 { 442 struct stat st; 443 444 if (fstat(fd, &st) < 0) { 445 return FAILURE; 446 } 447 448 if (!S_ISREG(st.st_mode)) { 449 return FAILURE; 450 } 451 452 /* 453 * st_size is an off_t, which is 64 bits signed; *ret is 454 * size_t, which might be 32 bits unsigned or 64 bits 455 * unsigned. Rather than being elaborate, just punt on 456 * files that are more than 2^31 bytes. We should never 457 * see a makefile that size in practice... 458 * 459 * While we're at it reject negative sizes too, just in case. 460 */ 461 if (st.st_size < 0 || st.st_size > 0x7fffffff) { 462 return FAILURE; 463 } 464 465 *ret = (size_t) st.st_size; 466 return SUCCESS; 467 } 468 469 /* 470 * Read in a file. 471 * 472 * Until the path search logic can be moved under here instead of 473 * being in the caller in another source file, we need to have the fd 474 * passed in already open. Bleh. 475 * 476 * If the path is NULL use stdin and (to insure against fd leaks) 477 * assert that the caller passed in -1. 478 */ 479 static struct loadedfile * 480 loadfile(const char *path, int fd) 481 { 482 struct loadedfile *lf; 483 #ifdef HAVE_MMAP 484 long pagesize; 485 #endif 486 ssize_t result; 487 size_t bufpos; 488 489 lf = loadedfile_create(path); 490 491 if (path == NULL) { 492 assert(fd == -1); 493 fd = STDIN_FILENO; 494 } else { 495 #if 0 /* notyet */ 496 fd = open(path, O_RDONLY); 497 if (fd < 0) { 498 ... 499 Error("%s: %s", path, strerror(errno)); 500 exit(1); 501 } 502 #endif 503 } 504 505 #ifdef HAVE_MMAP 506 if (load_getsize(fd, &lf->len) == SUCCESS) { 507 /* found a size, try mmap */ 508 pagesize = sysconf(_SC_PAGESIZE); 509 if (pagesize <= 0) { 510 pagesize = 0x1000; 511 } 512 /* round size up to a page */ 513 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 514 515 /* 516 * XXX hack for dealing with empty files; remove when 517 * we're no longer limited by interfacing to the old 518 * logic elsewhere in this file. 519 */ 520 if (lf->maplen == 0) { 521 lf->maplen = pagesize; 522 } 523 524 /* 525 * FUTURE: remove PROT_WRITE when the parser no longer 526 * needs to scribble on the input. 527 */ 528 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 529 MAP_FILE|MAP_COPY, fd, 0); 530 if (lf->buf != MAP_FAILED) { 531 /* succeeded */ 532 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 533 char *b = malloc(lf->len + 1); 534 b[lf->len] = '\n'; 535 memcpy(b, lf->buf, lf->len++); 536 munmap(lf->buf, lf->maplen); 537 lf->maplen = 0; 538 lf->buf = b; 539 } 540 goto done; 541 } 542 } 543 #endif 544 /* cannot mmap; load the traditional way */ 545 546 lf->maplen = 0; 547 lf->len = 1024; 548 lf->buf = bmake_malloc(lf->len); 549 550 bufpos = 0; 551 while (1) { 552 assert(bufpos <= lf->len); 553 if (bufpos == lf->len) { 554 lf->len *= 2; 555 lf->buf = bmake_realloc(lf->buf, lf->len); 556 } 557 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 558 if (result < 0) { 559 Error("%s: read error: %s", path, strerror(errno)); 560 exit(1); 561 } 562 if (result == 0) { 563 break; 564 } 565 bufpos += result; 566 } 567 assert(bufpos <= lf->len); 568 lf->len = bufpos; 569 570 /* truncate malloc region to actual length (maybe not useful) */ 571 if (lf->len > 0) { 572 lf->buf = bmake_realloc(lf->buf, lf->len); 573 } 574 575 #ifdef HAVE_MMAP 576 done: 577 #endif 578 if (path != NULL) { 579 close(fd); 580 } 581 return lf; 582 } 583 584 //////////////////////////////////////////////////////////// 585 // old code 586 587 /*- 588 *---------------------------------------------------------------------- 589 * ParseIsEscaped -- 590 * Check if the current character is escaped on the current line 591 * 592 * Results: 593 * 0 if the character is not backslash escaped, 1 otherwise 594 * 595 * Side Effects: 596 * None 597 *---------------------------------------------------------------------- 598 */ 599 static int 600 ParseIsEscaped(const char *line, const char *c) 601 { 602 int active = 0; 603 for (;;) { 604 if (line == c) 605 return active; 606 if (*--c != '\\') 607 return active; 608 active = !active; 609 } 610 } 611 612 /*- 613 *---------------------------------------------------------------------- 614 * ParseFindKeyword -- 615 * Look in the table of keywords for one matching the given string. 616 * 617 * Input: 618 * str String to find 619 * 620 * Results: 621 * The index of the keyword, or -1 if it isn't there. 622 * 623 * Side Effects: 624 * None 625 *---------------------------------------------------------------------- 626 */ 627 static int 628 ParseFindKeyword(const char *str) 629 { 630 int start, end, cur; 631 int diff; 632 633 start = 0; 634 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 635 636 do { 637 cur = start + ((end - start) / 2); 638 diff = strcmp(str, parseKeywords[cur].name); 639 640 if (diff == 0) { 641 return (cur); 642 } else if (diff < 0) { 643 end = cur - 1; 644 } else { 645 start = cur + 1; 646 } 647 } while (start <= end); 648 return (-1); 649 } 650 651 /*- 652 * ParseVErrorInternal -- 653 * Error message abort function for parsing. Prints out the context 654 * of the error (line number and file) as well as the message with 655 * two optional arguments. 656 * 657 * Results: 658 * None 659 * 660 * Side Effects: 661 * "fatals" is incremented if the level is PARSE_FATAL. 662 */ 663 /* VARARGS */ 664 static void 665 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 666 const char *fmt, va_list ap) 667 { 668 static Boolean fatal_warning_error_printed = FALSE; 669 670 (void)fprintf(f, "%s: ", progname); 671 672 if (cfname != NULL) { 673 (void)fprintf(f, "\""); 674 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 675 char *cp; 676 const char *dir; 677 678 /* 679 * Nothing is more annoying than not knowing 680 * which Makefile is the culprit. 681 */ 682 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 683 if (dir == NULL || *dir == '\0' || 684 (*dir == '.' && dir[1] == '\0')) 685 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 686 if (dir == NULL) 687 dir = "."; 688 689 (void)fprintf(f, "%s/%s", dir, cfname); 690 } else 691 (void)fprintf(f, "%s", cfname); 692 693 (void)fprintf(f, "\" line %d: ", (int)clineno); 694 } 695 if (type == PARSE_WARNING) 696 (void)fprintf(f, "warning: "); 697 (void)vfprintf(f, fmt, ap); 698 (void)fprintf(f, "\n"); 699 (void)fflush(f); 700 if (type == PARSE_FATAL || parseWarnFatal) 701 fatals += 1; 702 if (parseWarnFatal && !fatal_warning_error_printed) { 703 Error("parsing warnings being treated as errors"); 704 fatal_warning_error_printed = TRUE; 705 } 706 } 707 708 /*- 709 * ParseErrorInternal -- 710 * Error function 711 * 712 * Results: 713 * None 714 * 715 * Side Effects: 716 * None 717 */ 718 /* VARARGS */ 719 static void 720 ParseErrorInternal(const char *cfname, size_t clineno, int type, 721 const char *fmt, ...) 722 { 723 va_list ap; 724 725 va_start(ap, fmt); 726 (void)fflush(stdout); 727 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 728 va_end(ap); 729 730 if (debug_file != stderr && debug_file != stdout) { 731 va_start(ap, fmt); 732 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 733 va_end(ap); 734 } 735 } 736 737 /*- 738 * Parse_Error -- 739 * External interface to ParseErrorInternal; uses the default filename 740 * Line number. 741 * 742 * Results: 743 * None 744 * 745 * Side Effects: 746 * None 747 */ 748 /* VARARGS */ 749 void 750 Parse_Error(int type, const char *fmt, ...) 751 { 752 va_list ap; 753 const char *fname; 754 size_t lineno; 755 756 if (curFile == NULL) { 757 fname = NULL; 758 lineno = 0; 759 } else { 760 fname = curFile->fname; 761 lineno = curFile->lineno; 762 } 763 764 va_start(ap, fmt); 765 (void)fflush(stdout); 766 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 767 va_end(ap); 768 769 if (debug_file != stderr && debug_file != stdout) { 770 va_start(ap, fmt); 771 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 772 va_end(ap); 773 } 774 } 775 776 777 /* 778 * ParseMessage 779 * Parse a .info .warning or .error directive 780 * 781 * The input is the line minus the ".". We substitute 782 * variables, print the message and exit(1) (for .error) or just print 783 * a warning if the directive is malformed. 784 */ 785 static Boolean 786 ParseMessage(char *line) 787 { 788 int mtype; 789 790 switch(*line) { 791 case 'i': 792 mtype = 0; 793 break; 794 case 'w': 795 mtype = PARSE_WARNING; 796 break; 797 case 'e': 798 mtype = PARSE_FATAL; 799 break; 800 default: 801 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 802 return FALSE; 803 } 804 805 while (isalpha((u_char)*line)) 806 line++; 807 if (!isspace((u_char)*line)) 808 return FALSE; /* not for us */ 809 while (isspace((u_char)*line)) 810 line++; 811 812 line = Var_Subst(NULL, line, VAR_CMD, 0); 813 Parse_Error(mtype, "%s", line); 814 free(line); 815 816 if (mtype == PARSE_FATAL) { 817 /* Terminate immediately. */ 818 exit(1); 819 } 820 return TRUE; 821 } 822 823 /*- 824 *--------------------------------------------------------------------- 825 * ParseLinkSrc -- 826 * Link the parent node to its new child. Used in a Lst_ForEach by 827 * ParseDoDependency. If the specType isn't 'Not', the parent 828 * isn't linked as a parent of the child. 829 * 830 * Input: 831 * pgnp The parent node 832 * cgpn The child node 833 * 834 * Results: 835 * Always = 0 836 * 837 * Side Effects: 838 * New elements are added to the parents list of cgn and the 839 * children list of cgn. the unmade field of pgn is updated 840 * to reflect the additional child. 841 *--------------------------------------------------------------------- 842 */ 843 static int 844 ParseLinkSrc(void *pgnp, void *cgnp) 845 { 846 GNode *pgn = (GNode *)pgnp; 847 GNode *cgn = (GNode *)cgnp; 848 849 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 850 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 851 (void)Lst_AtEnd(pgn->children, cgn); 852 if (specType == Not) 853 (void)Lst_AtEnd(cgn->parents, pgn); 854 pgn->unmade += 1; 855 if (DEBUG(PARSE)) { 856 fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name); 857 Targ_PrintNode(pgn, 0); 858 Targ_PrintNode(cgn, 0); 859 } 860 return (0); 861 } 862 863 /*- 864 *--------------------------------------------------------------------- 865 * ParseDoOp -- 866 * Apply the parsed operator to the given target node. Used in a 867 * Lst_ForEach call by ParseDoDependency once all targets have 868 * been found and their operator parsed. If the previous and new 869 * operators are incompatible, a major error is taken. 870 * 871 * Input: 872 * gnp The node to which the operator is to be applied 873 * opp The operator to apply 874 * 875 * Results: 876 * Always 0 877 * 878 * Side Effects: 879 * The type field of the node is altered to reflect any new bits in 880 * the op. 881 *--------------------------------------------------------------------- 882 */ 883 static int 884 ParseDoOp(void *gnp, void *opp) 885 { 886 GNode *gn = (GNode *)gnp; 887 int op = *(int *)opp; 888 /* 889 * If the dependency mask of the operator and the node don't match and 890 * the node has actually had an operator applied to it before, and 891 * the operator actually has some dependency information in it, complain. 892 */ 893 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 894 !OP_NOP(gn->type) && !OP_NOP(op)) 895 { 896 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 897 return (1); 898 } 899 900 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 901 /* 902 * If the node was the object of a :: operator, we need to create a 903 * new instance of it for the children and commands on this dependency 904 * line. The new instance is placed on the 'cohorts' list of the 905 * initial one (note the initial one is not on its own cohorts list) 906 * and the new instance is linked to all parents of the initial 907 * instance. 908 */ 909 GNode *cohort; 910 911 /* 912 * Propagate copied bits to the initial node. They'll be propagated 913 * back to the rest of the cohorts later. 914 */ 915 gn->type |= op & ~OP_OPMASK; 916 917 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 918 /* 919 * Make the cohort invisible as well to avoid duplicating it into 920 * other variables. True, parents of this target won't tend to do 921 * anything with their local variables, but better safe than 922 * sorry. (I think this is pointless now, since the relevant list 923 * traversals will no longer see this node anyway. -mycroft) 924 */ 925 cohort->type = op | OP_INVISIBLE; 926 (void)Lst_AtEnd(gn->cohorts, cohort); 927 cohort->centurion = gn; 928 gn->unmade_cohorts += 1; 929 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 930 gn->unmade_cohorts); 931 } else { 932 /* 933 * We don't want to nuke any previous flags (whatever they were) so we 934 * just OR the new operator into the old 935 */ 936 gn->type |= op; 937 } 938 939 return (0); 940 } 941 942 /*- 943 *--------------------------------------------------------------------- 944 * ParseDoSrc -- 945 * Given the name of a source, figure out if it is an attribute 946 * and apply it to the targets if it is. Else decide if there is 947 * some attribute which should be applied *to* the source because 948 * of some special target and apply it if so. Otherwise, make the 949 * source be a child of the targets in the list 'targets' 950 * 951 * Input: 952 * tOp operator (if any) from special targets 953 * src name of the source to handle 954 * 955 * Results: 956 * None 957 * 958 * Side Effects: 959 * Operator bits may be added to the list of targets or to the source. 960 * The targets may have a new source added to their lists of children. 961 *--------------------------------------------------------------------- 962 */ 963 static void 964 ParseDoSrc(int tOp, const char *src) 965 { 966 GNode *gn = NULL; 967 static int wait_number = 0; 968 char wait_src[16]; 969 970 if (*src == '.' && isupper ((unsigned char)src[1])) { 971 int keywd = ParseFindKeyword(src); 972 if (keywd != -1) { 973 int op = parseKeywords[keywd].op; 974 if (op != 0) { 975 Lst_ForEach(targets, ParseDoOp, &op); 976 return; 977 } 978 if (parseKeywords[keywd].spec == Wait) { 979 /* 980 * We add a .WAIT node in the dependency list. 981 * After any dynamic dependencies (and filename globbing) 982 * have happened, it is given a dependency on the each 983 * previous child back to and previous .WAIT node. 984 * The next child won't be scheduled until the .WAIT node 985 * is built. 986 * We give each .WAIT node a unique name (mainly for diag). 987 */ 988 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 989 gn = Targ_FindNode(wait_src, TARG_NOHASH); 990 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 991 Lst_ForEach(targets, ParseLinkSrc, gn); 992 return; 993 } 994 } 995 } 996 997 switch (specType) { 998 case Main: 999 /* 1000 * If we have noted the existence of a .MAIN, it means we need 1001 * to add the sources of said target to the list of things 1002 * to create. The string 'src' is likely to be free, so we 1003 * must make a new copy of it. Note that this will only be 1004 * invoked if the user didn't specify a target on the command 1005 * line. This is to allow #ifmake's to succeed, or something... 1006 */ 1007 (void)Lst_AtEnd(create, bmake_strdup(src)); 1008 /* 1009 * Add the name to the .TARGETS variable as well, so the user can 1010 * employ that, if desired. 1011 */ 1012 Var_Append(".TARGETS", src, VAR_GLOBAL); 1013 return; 1014 1015 case Order: 1016 /* 1017 * Create proper predecessor/successor links between the previous 1018 * source and the current one. 1019 */ 1020 gn = Targ_FindNode(src, TARG_CREATE); 1021 if (predecessor != NULL) { 1022 (void)Lst_AtEnd(predecessor->order_succ, gn); 1023 (void)Lst_AtEnd(gn->order_pred, predecessor); 1024 if (DEBUG(PARSE)) { 1025 fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n", 1026 predecessor->name, gn->name); 1027 Targ_PrintNode(predecessor, 0); 1028 Targ_PrintNode(gn, 0); 1029 } 1030 } 1031 /* 1032 * The current source now becomes the predecessor for the next one. 1033 */ 1034 predecessor = gn; 1035 break; 1036 1037 default: 1038 /* 1039 * If the source is not an attribute, we need to find/create 1040 * a node for it. After that we can apply any operator to it 1041 * from a special target or link it to its parents, as 1042 * appropriate. 1043 * 1044 * In the case of a source that was the object of a :: operator, 1045 * the attribute is applied to all of its instances (as kept in 1046 * the 'cohorts' list of the node) or all the cohorts are linked 1047 * to all the targets. 1048 */ 1049 1050 /* Find/create the 'src' node and attach to all targets */ 1051 gn = Targ_FindNode(src, TARG_CREATE); 1052 if (tOp) { 1053 gn->type |= tOp; 1054 } else { 1055 Lst_ForEach(targets, ParseLinkSrc, gn); 1056 } 1057 break; 1058 } 1059 } 1060 1061 /*- 1062 *----------------------------------------------------------------------- 1063 * ParseFindMain -- 1064 * Find a real target in the list and set it to be the main one. 1065 * Called by ParseDoDependency when a main target hasn't been found 1066 * yet. 1067 * 1068 * Input: 1069 * gnp Node to examine 1070 * 1071 * Results: 1072 * 0 if main not found yet, 1 if it is. 1073 * 1074 * Side Effects: 1075 * mainNode is changed and Targ_SetMain is called. 1076 * 1077 *----------------------------------------------------------------------- 1078 */ 1079 static int 1080 ParseFindMain(void *gnp, void *dummy) 1081 { 1082 GNode *gn = (GNode *)gnp; 1083 if ((gn->type & OP_NOTARGET) == 0) { 1084 mainNode = gn; 1085 Targ_SetMain(gn); 1086 return (dummy ? 1 : 1); 1087 } else { 1088 return (dummy ? 0 : 0); 1089 } 1090 } 1091 1092 /*- 1093 *----------------------------------------------------------------------- 1094 * ParseAddDir -- 1095 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1096 * 1097 * Results: 1098 * === 0 1099 * 1100 * Side Effects: 1101 * See Dir_AddDir. 1102 * 1103 *----------------------------------------------------------------------- 1104 */ 1105 static int 1106 ParseAddDir(void *path, void *name) 1107 { 1108 (void)Dir_AddDir((Lst) path, (char *)name); 1109 return(0); 1110 } 1111 1112 /*- 1113 *----------------------------------------------------------------------- 1114 * ParseClearPath -- 1115 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1116 * 1117 * Results: 1118 * === 0 1119 * 1120 * Side Effects: 1121 * See Dir_ClearPath 1122 * 1123 *----------------------------------------------------------------------- 1124 */ 1125 static int 1126 ParseClearPath(void *path, void *dummy) 1127 { 1128 Dir_ClearPath((Lst) path); 1129 return(dummy ? 0 : 0); 1130 } 1131 1132 /*- 1133 *--------------------------------------------------------------------- 1134 * ParseDoDependency -- 1135 * Parse the dependency line in line. 1136 * 1137 * Input: 1138 * line the line to parse 1139 * 1140 * Results: 1141 * None 1142 * 1143 * Side Effects: 1144 * The nodes of the sources are linked as children to the nodes of the 1145 * targets. Some nodes may be created. 1146 * 1147 * We parse a dependency line by first extracting words from the line and 1148 * finding nodes in the list of all targets with that name. This is done 1149 * until a character is encountered which is an operator character. Currently 1150 * these are only ! and :. At this point the operator is parsed and the 1151 * pointer into the line advanced until the first source is encountered. 1152 * The parsed operator is applied to each node in the 'targets' list, 1153 * which is where the nodes found for the targets are kept, by means of 1154 * the ParseDoOp function. 1155 * The sources are read in much the same way as the targets were except 1156 * that now they are expanded using the wildcarding scheme of the C-Shell 1157 * and all instances of the resulting words in the list of all targets 1158 * are found. Each of the resulting nodes is then linked to each of the 1159 * targets as one of its children. 1160 * Certain targets are handled specially. These are the ones detailed 1161 * by the specType variable. 1162 * The storing of transformation rules is also taken care of here. 1163 * A target is recognized as a transformation rule by calling 1164 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1165 * from the suffix module via Suff_AddTransform rather than the standard 1166 * Targ_FindNode in the target module. 1167 *--------------------------------------------------------------------- 1168 */ 1169 static void 1170 ParseDoDependency(char *line) 1171 { 1172 char *cp; /* our current position */ 1173 GNode *gn = NULL; /* a general purpose temporary node */ 1174 int op; /* the operator on the line */ 1175 char savec; /* a place to save a character */ 1176 Lst paths; /* List of search paths to alter when parsing 1177 * a list of .PATH targets */ 1178 int tOp; /* operator from special target */ 1179 Lst sources; /* list of archive source names after 1180 * expansion */ 1181 Lst curTargs; /* list of target names to be found and added 1182 * to the targets list */ 1183 char *lstart = line; 1184 1185 if (DEBUG(PARSE)) 1186 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1187 tOp = 0; 1188 1189 specType = Not; 1190 paths = NULL; 1191 1192 curTargs = Lst_Init(FALSE); 1193 1194 do { 1195 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1196 !(isspace((unsigned char)*cp) || 1197 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1198 cp++) { 1199 if (*cp == '$') { 1200 /* 1201 * Must be a dynamic source (would have been expanded 1202 * otherwise), so call the Var module to parse the puppy 1203 * so we can safely advance beyond it...There should be 1204 * no errors in this, as they would have been discovered 1205 * in the initial Var_Subst and we wouldn't be here. 1206 */ 1207 int length; 1208 void *freeIt; 1209 char *result; 1210 1211 result = Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt); 1212 if (freeIt) 1213 free(freeIt); 1214 cp += length-1; 1215 } 1216 } 1217 1218 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1219 /* 1220 * Archives must be handled specially to make sure the OP_ARCHV 1221 * flag is set in their 'type' field, for one thing, and because 1222 * things like "archive(file1.o file2.o file3.o)" are permissible. 1223 * Arch_ParseArchive will set 'line' to be the first non-blank 1224 * after the archive-spec. It creates/finds nodes for the members 1225 * and places them on the given list, returning SUCCESS if all 1226 * went well and FAILURE if there was an error in the 1227 * specification. On error, line should remain untouched. 1228 */ 1229 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1230 Parse_Error(PARSE_FATAL, 1231 "Error in archive specification: \"%s\"", line); 1232 goto out; 1233 } else { 1234 continue; 1235 } 1236 } 1237 savec = *cp; 1238 1239 if (!*cp) { 1240 /* 1241 * Ending a dependency line without an operator is a Bozo 1242 * no-no. As a heuristic, this is also often triggered by 1243 * undetected conflicts from cvs/rcs merges. 1244 */ 1245 if ((strncmp(line, "<<<<<<", 6) == 0) || 1246 (strncmp(line, "======", 6) == 0) || 1247 (strncmp(line, ">>>>>>", 6) == 0)) 1248 Parse_Error(PARSE_FATAL, 1249 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1250 else 1251 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1252 : "Need an operator"); 1253 goto out; 1254 } 1255 *cp = '\0'; 1256 1257 /* 1258 * Have a word in line. See if it's a special target and set 1259 * specType to match it. 1260 */ 1261 if (*line == '.' && isupper ((unsigned char)line[1])) { 1262 /* 1263 * See if the target is a special target that must have it 1264 * or its sources handled specially. 1265 */ 1266 int keywd = ParseFindKeyword(line); 1267 if (keywd != -1) { 1268 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1269 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1270 goto out; 1271 } 1272 1273 specType = parseKeywords[keywd].spec; 1274 tOp = parseKeywords[keywd].op; 1275 1276 /* 1277 * Certain special targets have special semantics: 1278 * .PATH Have to set the dirSearchPath 1279 * variable too 1280 * .MAIN Its sources are only used if 1281 * nothing has been specified to 1282 * create. 1283 * .DEFAULT Need to create a node to hang 1284 * commands on, but we don't want 1285 * it in the graph, nor do we want 1286 * it to be the Main Target, so we 1287 * create it, set OP_NOTMAIN and 1288 * add it to the list, setting 1289 * DEFAULT to the new node for 1290 * later use. We claim the node is 1291 * A transformation rule to make 1292 * life easier later, when we'll 1293 * use Make_HandleUse to actually 1294 * apply the .DEFAULT commands. 1295 * .PHONY The list of targets 1296 * .NOPATH Don't search for file in the path 1297 * .BEGIN 1298 * .END 1299 * .ERROR 1300 * .INTERRUPT Are not to be considered the 1301 * main target. 1302 * .NOTPARALLEL Make only one target at a time. 1303 * .SINGLESHELL Create a shell for each command. 1304 * .ORDER Must set initial predecessor to NULL 1305 */ 1306 switch (specType) { 1307 case ExPath: 1308 if (paths == NULL) { 1309 paths = Lst_Init(FALSE); 1310 } 1311 (void)Lst_AtEnd(paths, dirSearchPath); 1312 break; 1313 case Main: 1314 if (!Lst_IsEmpty(create)) { 1315 specType = Not; 1316 } 1317 break; 1318 case Begin: 1319 case End: 1320 case dotError: 1321 case Interrupt: 1322 gn = Targ_FindNode(line, TARG_CREATE); 1323 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1324 (void)Lst_AtEnd(targets, gn); 1325 break; 1326 case Default: 1327 gn = Targ_NewGN(".DEFAULT"); 1328 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1329 (void)Lst_AtEnd(targets, gn); 1330 DEFAULT = gn; 1331 break; 1332 case NotParallel: 1333 maxJobs = 1; 1334 break; 1335 case SingleShell: 1336 compatMake = TRUE; 1337 break; 1338 case Order: 1339 predecessor = NULL; 1340 break; 1341 default: 1342 break; 1343 } 1344 } else if (strncmp(line, ".PATH", 5) == 0) { 1345 /* 1346 * .PATH<suffix> has to be handled specially. 1347 * Call on the suffix module to give us a path to 1348 * modify. 1349 */ 1350 Lst path; 1351 1352 specType = ExPath; 1353 path = Suff_GetPath(&line[5]); 1354 if (path == NULL) { 1355 Parse_Error(PARSE_FATAL, 1356 "Suffix '%s' not defined (yet)", 1357 &line[5]); 1358 goto out; 1359 } else { 1360 if (paths == NULL) { 1361 paths = Lst_Init(FALSE); 1362 } 1363 (void)Lst_AtEnd(paths, path); 1364 } 1365 } 1366 } 1367 1368 /* 1369 * Have word in line. Get or create its node and stick it at 1370 * the end of the targets list 1371 */ 1372 if ((specType == Not) && (*line != '\0')) { 1373 if (Dir_HasWildcards(line)) { 1374 /* 1375 * Targets are to be sought only in the current directory, 1376 * so create an empty path for the thing. Note we need to 1377 * use Dir_Destroy in the destruction of the path as the 1378 * Dir module could have added a directory to the path... 1379 */ 1380 Lst emptyPath = Lst_Init(FALSE); 1381 1382 Dir_Expand(line, emptyPath, curTargs); 1383 1384 Lst_Destroy(emptyPath, Dir_Destroy); 1385 } else { 1386 /* 1387 * No wildcards, but we want to avoid code duplication, 1388 * so create a list with the word on it. 1389 */ 1390 (void)Lst_AtEnd(curTargs, line); 1391 } 1392 1393 while(!Lst_IsEmpty(curTargs)) { 1394 char *targName = (char *)Lst_DeQueue(curTargs); 1395 1396 if (!Suff_IsTransform (targName)) { 1397 gn = Targ_FindNode(targName, TARG_CREATE); 1398 } else { 1399 gn = Suff_AddTransform(targName); 1400 } 1401 1402 (void)Lst_AtEnd(targets, gn); 1403 } 1404 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1405 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1406 } 1407 1408 *cp = savec; 1409 /* 1410 * If it is a special type and not .PATH, it's the only target we 1411 * allow on this line... 1412 */ 1413 if (specType != Not && specType != ExPath) { 1414 Boolean warning = FALSE; 1415 1416 while (*cp && (ParseIsEscaped(lstart, cp) || 1417 ((*cp != '!') && (*cp != ':')))) { 1418 if (ParseIsEscaped(lstart, cp) || 1419 (*cp != ' ' && *cp != '\t')) { 1420 warning = TRUE; 1421 } 1422 cp++; 1423 } 1424 if (warning) { 1425 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1426 } 1427 } else { 1428 while (*cp && isspace ((unsigned char)*cp)) { 1429 cp++; 1430 } 1431 } 1432 line = cp; 1433 } while (*line && (ParseIsEscaped(lstart, line) || 1434 ((*line != '!') && (*line != ':')))); 1435 1436 /* 1437 * Don't need the list of target names anymore... 1438 */ 1439 Lst_Destroy(curTargs, NULL); 1440 curTargs = NULL; 1441 1442 if (!Lst_IsEmpty(targets)) { 1443 switch(specType) { 1444 default: 1445 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1446 break; 1447 case Default: 1448 case Begin: 1449 case End: 1450 case dotError: 1451 case Interrupt: 1452 /* 1453 * These four create nodes on which to hang commands, so 1454 * targets shouldn't be empty... 1455 */ 1456 case Not: 1457 /* 1458 * Nothing special here -- targets can be empty if it wants. 1459 */ 1460 break; 1461 } 1462 } 1463 1464 /* 1465 * Have now parsed all the target names. Must parse the operator next. The 1466 * result is left in op . 1467 */ 1468 if (*cp == '!') { 1469 op = OP_FORCE; 1470 } else if (*cp == ':') { 1471 if (cp[1] == ':') { 1472 op = OP_DOUBLEDEP; 1473 cp++; 1474 } else { 1475 op = OP_DEPENDS; 1476 } 1477 } else { 1478 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1479 : "Missing dependency operator"); 1480 goto out; 1481 } 1482 1483 cp++; /* Advance beyond operator */ 1484 1485 Lst_ForEach(targets, ParseDoOp, &op); 1486 1487 /* 1488 * Get to the first source 1489 */ 1490 while (*cp && isspace ((unsigned char)*cp)) { 1491 cp++; 1492 } 1493 line = cp; 1494 1495 /* 1496 * Several special targets take different actions if present with no 1497 * sources: 1498 * a .SUFFIXES line with no sources clears out all old suffixes 1499 * a .PRECIOUS line makes all targets precious 1500 * a .IGNORE line ignores errors for all targets 1501 * a .SILENT line creates silence when making all targets 1502 * a .PATH removes all directories from the search path(s). 1503 */ 1504 if (!*line) { 1505 switch (specType) { 1506 case Suffixes: 1507 Suff_ClearSuffixes(); 1508 break; 1509 case Precious: 1510 allPrecious = TRUE; 1511 break; 1512 case Ignore: 1513 ignoreErrors = TRUE; 1514 break; 1515 case Silent: 1516 beSilent = TRUE; 1517 break; 1518 case ExPath: 1519 Lst_ForEach(paths, ParseClearPath, NULL); 1520 Dir_SetPATH(); 1521 break; 1522 #ifdef POSIX 1523 case Posix: 1524 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1525 break; 1526 #endif 1527 default: 1528 break; 1529 } 1530 } else if (specType == MFlags) { 1531 /* 1532 * Call on functions in main.c to deal with these arguments and 1533 * set the initial character to a null-character so the loop to 1534 * get sources won't get anything 1535 */ 1536 Main_ParseArgLine(line); 1537 *line = '\0'; 1538 } else if (specType == ExShell) { 1539 if (Job_ParseShell(line) != SUCCESS) { 1540 Parse_Error(PARSE_FATAL, "improper shell specification"); 1541 goto out; 1542 } 1543 *line = '\0'; 1544 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1545 *line = '\0'; 1546 } 1547 1548 /* 1549 * NOW GO FOR THE SOURCES 1550 */ 1551 if ((specType == Suffixes) || (specType == ExPath) || 1552 (specType == Includes) || (specType == Libs) || 1553 (specType == Null) || (specType == ExObjdir)) 1554 { 1555 while (*line) { 1556 /* 1557 * If the target was one that doesn't take files as its sources 1558 * but takes something like suffixes, we take each 1559 * space-separated word on the line as a something and deal 1560 * with it accordingly. 1561 * 1562 * If the target was .SUFFIXES, we take each source as a 1563 * suffix and add it to the list of suffixes maintained by the 1564 * Suff module. 1565 * 1566 * If the target was a .PATH, we add the source as a directory 1567 * to search on the search path. 1568 * 1569 * If it was .INCLUDES, the source is taken to be the suffix of 1570 * files which will be #included and whose search path should 1571 * be present in the .INCLUDES variable. 1572 * 1573 * If it was .LIBS, the source is taken to be the suffix of 1574 * files which are considered libraries and whose search path 1575 * should be present in the .LIBS variable. 1576 * 1577 * If it was .NULL, the source is the suffix to use when a file 1578 * has no valid suffix. 1579 * 1580 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1581 * and will cause make to do a new chdir to that path. 1582 */ 1583 while (*cp && !isspace ((unsigned char)*cp)) { 1584 cp++; 1585 } 1586 savec = *cp; 1587 *cp = '\0'; 1588 switch (specType) { 1589 case Suffixes: 1590 Suff_AddSuffix(line, &mainNode); 1591 break; 1592 case ExPath: 1593 Lst_ForEach(paths, ParseAddDir, line); 1594 break; 1595 case Includes: 1596 Suff_AddInclude(line); 1597 break; 1598 case Libs: 1599 Suff_AddLib(line); 1600 break; 1601 case Null: 1602 Suff_SetNull(line); 1603 break; 1604 case ExObjdir: 1605 Main_SetObjdir(line); 1606 break; 1607 default: 1608 break; 1609 } 1610 *cp = savec; 1611 if (savec != '\0') { 1612 cp++; 1613 } 1614 while (*cp && isspace ((unsigned char)*cp)) { 1615 cp++; 1616 } 1617 line = cp; 1618 } 1619 if (paths) { 1620 Lst_Destroy(paths, NULL); 1621 } 1622 if (specType == ExPath) 1623 Dir_SetPATH(); 1624 } else { 1625 while (*line) { 1626 /* 1627 * The targets take real sources, so we must beware of archive 1628 * specifications (i.e. things with left parentheses in them) 1629 * and handle them accordingly. 1630 */ 1631 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1632 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1633 /* 1634 * Only stop for a left parenthesis if it isn't at the 1635 * start of a word (that'll be for variable changes 1636 * later) and isn't preceded by a dollar sign (a dynamic 1637 * source). 1638 */ 1639 break; 1640 } 1641 } 1642 1643 if (*cp == LPAREN) { 1644 sources = Lst_Init(FALSE); 1645 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1646 Parse_Error(PARSE_FATAL, 1647 "Error in source archive spec \"%s\"", line); 1648 goto out; 1649 } 1650 1651 while (!Lst_IsEmpty (sources)) { 1652 gn = (GNode *)Lst_DeQueue(sources); 1653 ParseDoSrc(tOp, gn->name); 1654 } 1655 Lst_Destroy(sources, NULL); 1656 cp = line; 1657 } else { 1658 if (*cp) { 1659 *cp = '\0'; 1660 cp += 1; 1661 } 1662 1663 ParseDoSrc(tOp, line); 1664 } 1665 while (*cp && isspace ((unsigned char)*cp)) { 1666 cp++; 1667 } 1668 line = cp; 1669 } 1670 } 1671 1672 if (mainNode == NULL) { 1673 /* 1674 * If we have yet to decide on a main target to make, in the 1675 * absence of any user input, we want the first target on 1676 * the first dependency line that is actually a real target 1677 * (i.e. isn't a .USE or .EXEC rule) to be made. 1678 */ 1679 Lst_ForEach(targets, ParseFindMain, NULL); 1680 } 1681 1682 out: 1683 if (curTargs) 1684 Lst_Destroy(curTargs, NULL); 1685 } 1686 1687 /*- 1688 *--------------------------------------------------------------------- 1689 * Parse_IsVar -- 1690 * Return TRUE if the passed line is a variable assignment. A variable 1691 * assignment consists of a single word followed by optional whitespace 1692 * followed by either a += or an = operator. 1693 * This function is used both by the Parse_File function and main when 1694 * parsing the command-line arguments. 1695 * 1696 * Input: 1697 * line the line to check 1698 * 1699 * Results: 1700 * TRUE if it is. FALSE if it ain't 1701 * 1702 * Side Effects: 1703 * none 1704 *--------------------------------------------------------------------- 1705 */ 1706 Boolean 1707 Parse_IsVar(char *line) 1708 { 1709 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1710 char ch; 1711 int level = 0; 1712 #define ISEQOPERATOR(c) \ 1713 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1714 1715 /* 1716 * Skip to variable name 1717 */ 1718 for (;(*line == ' ') || (*line == '\t'); line++) 1719 continue; 1720 1721 /* Scan for one of the assignment operators outside a variable expansion */ 1722 while ((ch = *line++) != 0) { 1723 if (ch == '(' || ch == '{') { 1724 level++; 1725 continue; 1726 } 1727 if (ch == ')' || ch == '}') { 1728 level--; 1729 continue; 1730 } 1731 if (level != 0) 1732 continue; 1733 while (ch == ' ' || ch == '\t') { 1734 ch = *line++; 1735 wasSpace = TRUE; 1736 } 1737 if (ch == '=') 1738 return TRUE; 1739 if (*line == '=' && ISEQOPERATOR(ch)) 1740 return TRUE; 1741 if (wasSpace) 1742 return FALSE; 1743 } 1744 1745 return FALSE; 1746 } 1747 1748 /*- 1749 *--------------------------------------------------------------------- 1750 * Parse_DoVar -- 1751 * Take the variable assignment in the passed line and do it in the 1752 * global context. 1753 * 1754 * Note: There is a lexical ambiguity with assignment modifier characters 1755 * in variable names. This routine interprets the character before the = 1756 * as a modifier. Therefore, an assignment like 1757 * C++=/usr/bin/CC 1758 * is interpreted as "C+ +=" instead of "C++ =". 1759 * 1760 * Input: 1761 * line a line guaranteed to be a variable assignment. 1762 * This reduces error checks 1763 * ctxt Context in which to do the assignment 1764 * 1765 * Results: 1766 * none 1767 * 1768 * Side Effects: 1769 * the variable structure of the given variable name is altered in the 1770 * global context. 1771 *--------------------------------------------------------------------- 1772 */ 1773 void 1774 Parse_DoVar(char *line, GNode *ctxt) 1775 { 1776 char *cp; /* pointer into line */ 1777 enum { 1778 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1779 } type; /* Type of assignment */ 1780 char *opc; /* ptr to operator character to 1781 * null-terminate the variable name */ 1782 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1783 * i.e. if any variable expansion was 1784 * performed */ 1785 int depth; 1786 1787 /* 1788 * Skip to variable name 1789 */ 1790 while ((*line == ' ') || (*line == '\t')) { 1791 line++; 1792 } 1793 1794 /* 1795 * Skip to operator character, nulling out whitespace as we go 1796 * XXX Rather than counting () and {} we should look for $ and 1797 * then expand the variable. 1798 */ 1799 for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) { 1800 if (*cp == '(' || *cp == '{') { 1801 depth++; 1802 continue; 1803 } 1804 if (*cp == ')' || *cp == '}') { 1805 depth--; 1806 continue; 1807 } 1808 if (depth == 0 && isspace ((unsigned char)*cp)) { 1809 *cp = '\0'; 1810 } 1811 } 1812 opc = cp-1; /* operator is the previous character */ 1813 *cp++ = '\0'; /* nuke the = */ 1814 1815 /* 1816 * Check operator type 1817 */ 1818 switch (*opc) { 1819 case '+': 1820 type = VAR_APPEND; 1821 *opc = '\0'; 1822 break; 1823 1824 case '?': 1825 /* 1826 * If the variable already has a value, we don't do anything. 1827 */ 1828 *opc = '\0'; 1829 if (Var_Exists(line, ctxt)) { 1830 return; 1831 } else { 1832 type = VAR_NORMAL; 1833 } 1834 break; 1835 1836 case ':': 1837 type = VAR_SUBST; 1838 *opc = '\0'; 1839 break; 1840 1841 case '!': 1842 type = VAR_SHELL; 1843 *opc = '\0'; 1844 break; 1845 1846 default: 1847 #ifdef SUNSHCMD 1848 while (opc > line && *opc != ':') 1849 opc--; 1850 1851 if (strncmp(opc, ":sh", 3) == 0) { 1852 type = VAR_SHELL; 1853 *opc = '\0'; 1854 break; 1855 } 1856 #endif 1857 type = VAR_NORMAL; 1858 break; 1859 } 1860 1861 while (isspace ((unsigned char)*cp)) { 1862 cp++; 1863 } 1864 1865 if (type == VAR_APPEND) { 1866 Var_Append(line, cp, ctxt); 1867 } else if (type == VAR_SUBST) { 1868 /* 1869 * Allow variables in the old value to be undefined, but leave their 1870 * invocation alone -- this is done by forcing oldVars to be false. 1871 * XXX: This can cause recursive variables, but that's not hard to do, 1872 * and this allows someone to do something like 1873 * 1874 * CFLAGS = $(.INCLUDES) 1875 * CFLAGS := -I.. $(CFLAGS) 1876 * 1877 * And not get an error. 1878 */ 1879 Boolean oldOldVars = oldVars; 1880 1881 oldVars = FALSE; 1882 1883 /* 1884 * make sure that we set the variable the first time to nothing 1885 * so that it gets substituted! 1886 */ 1887 if (!Var_Exists(line, ctxt)) 1888 Var_Set(line, "", ctxt, 0); 1889 1890 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1891 oldVars = oldOldVars; 1892 freeCp = TRUE; 1893 1894 Var_Set(line, cp, ctxt, 0); 1895 } else if (type == VAR_SHELL) { 1896 char *res; 1897 const char *error; 1898 1899 if (strchr(cp, '$') != NULL) { 1900 /* 1901 * There's a dollar sign in the command, so perform variable 1902 * expansion on the whole thing. The resulting string will need 1903 * freeing when we're done, so set freeCmd to TRUE. 1904 */ 1905 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1906 freeCp = TRUE; 1907 } 1908 1909 res = Cmd_Exec(cp, &error); 1910 Var_Set(line, res, ctxt, 0); 1911 free(res); 1912 1913 if (error) 1914 Parse_Error(PARSE_WARNING, error, cp); 1915 } else { 1916 /* 1917 * Normal assignment -- just do it. 1918 */ 1919 Var_Set(line, cp, ctxt, 0); 1920 } 1921 if (strcmp(line, MAKEOVERRIDES) == 0) 1922 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1923 else if (strcmp(line, ".CURDIR") == 0) { 1924 /* 1925 * Somone is being (too?) clever... 1926 * Let's pretend they know what they are doing and 1927 * re-initialize the 'cur' Path. 1928 */ 1929 Dir_InitCur(cp); 1930 Dir_SetPATH(); 1931 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 1932 Job_SetPrefix(); 1933 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 1934 Var_Export(cp, 0); 1935 } 1936 if (freeCp) 1937 free(cp); 1938 } 1939 1940 1941 /*- 1942 * ParseAddCmd -- 1943 * Lst_ForEach function to add a command line to all targets 1944 * 1945 * Input: 1946 * gnp the node to which the command is to be added 1947 * cmd the command to add 1948 * 1949 * Results: 1950 * Always 0 1951 * 1952 * Side Effects: 1953 * A new element is added to the commands list of the node. 1954 */ 1955 static int 1956 ParseAddCmd(void *gnp, void *cmd) 1957 { 1958 GNode *gn = (GNode *)gnp; 1959 1960 /* Add to last (ie current) cohort for :: targets */ 1961 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 1962 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 1963 1964 /* if target already supplied, ignore commands */ 1965 if (!(gn->type & OP_HAS_COMMANDS)) { 1966 (void)Lst_AtEnd(gn->commands, cmd); 1967 ParseMark(gn); 1968 } else { 1969 #ifdef notyet 1970 /* XXX: We cannot do this until we fix the tree */ 1971 (void)Lst_AtEnd(gn->commands, cmd); 1972 Parse_Error(PARSE_WARNING, 1973 "overriding commands for target \"%s\"; " 1974 "previous commands defined at %s: %d ignored", 1975 gn->name, gn->fname, gn->lineno); 1976 #else 1977 Parse_Error(PARSE_WARNING, 1978 "duplicate script for target \"%s\" ignored", 1979 gn->name); 1980 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 1981 "using previous script for \"%s\" defined here", 1982 gn->name); 1983 #endif 1984 } 1985 return(0); 1986 } 1987 1988 /*- 1989 *----------------------------------------------------------------------- 1990 * ParseHasCommands -- 1991 * Callback procedure for Parse_File when destroying the list of 1992 * targets on the last dependency line. Marks a target as already 1993 * having commands if it does, to keep from having shell commands 1994 * on multiple dependency lines. 1995 * 1996 * Input: 1997 * gnp Node to examine 1998 * 1999 * Results: 2000 * None 2001 * 2002 * Side Effects: 2003 * OP_HAS_COMMANDS may be set for the target. 2004 * 2005 *----------------------------------------------------------------------- 2006 */ 2007 static void 2008 ParseHasCommands(void *gnp) 2009 { 2010 GNode *gn = (GNode *)gnp; 2011 if (!Lst_IsEmpty(gn->commands)) { 2012 gn->type |= OP_HAS_COMMANDS; 2013 } 2014 } 2015 2016 /*- 2017 *----------------------------------------------------------------------- 2018 * Parse_AddIncludeDir -- 2019 * Add a directory to the path searched for included makefiles 2020 * bracketed by double-quotes. Used by functions in main.c 2021 * 2022 * Input: 2023 * dir The name of the directory to add 2024 * 2025 * Results: 2026 * None. 2027 * 2028 * Side Effects: 2029 * The directory is appended to the list. 2030 * 2031 *----------------------------------------------------------------------- 2032 */ 2033 void 2034 Parse_AddIncludeDir(char *dir) 2035 { 2036 (void)Dir_AddDir(parseIncPath, dir); 2037 } 2038 2039 /*- 2040 *--------------------------------------------------------------------- 2041 * ParseDoInclude -- 2042 * Push to another file. 2043 * 2044 * The input is the line minus the `.'. A file spec is a string 2045 * enclosed in <> or "". The former is looked for only in sysIncPath. 2046 * The latter in . and the directories specified by -I command line 2047 * options 2048 * 2049 * Results: 2050 * None 2051 * 2052 * Side Effects: 2053 * A structure is added to the includes Lst and readProc, lineno, 2054 * fname and curFILE are altered for the new file 2055 *--------------------------------------------------------------------- 2056 */ 2057 2058 static void 2059 Parse_include_file(char *file, Boolean isSystem, int silent) 2060 { 2061 struct loadedfile *lf; 2062 char *fullname; /* full pathname of file */ 2063 char *newName; 2064 char *prefEnd, *incdir; 2065 int fd; 2066 int i; 2067 2068 /* 2069 * Now we know the file's name and its search path, we attempt to 2070 * find the durn thing. A return of NULL indicates the file don't 2071 * exist. 2072 */ 2073 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2074 2075 if (fullname == NULL && !isSystem) { 2076 /* 2077 * Include files contained in double-quotes are first searched for 2078 * relative to the including file's location. We don't want to 2079 * cd there, of course, so we just tack on the old file's 2080 * leading path components and call Dir_FindFile to see if 2081 * we can locate the beast. 2082 */ 2083 2084 incdir = bmake_strdup(curFile->fname); 2085 prefEnd = strrchr(incdir, '/'); 2086 if (prefEnd != NULL) { 2087 *prefEnd = '\0'; 2088 /* Now do lexical processing of leading "../" on the filename */ 2089 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2090 prefEnd = strrchr(incdir + 1, '/'); 2091 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2092 break; 2093 *prefEnd = '\0'; 2094 } 2095 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2096 fullname = Dir_FindFile(newName, parseIncPath); 2097 if (fullname == NULL) 2098 fullname = Dir_FindFile(newName, dirSearchPath); 2099 free(newName); 2100 } 2101 free(incdir); 2102 2103 if (fullname == NULL) { 2104 /* 2105 * Makefile wasn't found in same directory as included makefile. 2106 * Search for it first on the -I search path, 2107 * then on the .PATH search path, if not found in a -I directory. 2108 * If we have a suffix specific path we should use that. 2109 */ 2110 char *suff; 2111 Lst suffPath = NULL; 2112 2113 if ((suff = strrchr(file, '.'))) { 2114 suffPath = Suff_GetPath(suff); 2115 if (suffPath != NULL) { 2116 fullname = Dir_FindFile(file, suffPath); 2117 } 2118 } 2119 if (fullname == NULL) { 2120 fullname = Dir_FindFile(file, parseIncPath); 2121 if (fullname == NULL) { 2122 fullname = Dir_FindFile(file, dirSearchPath); 2123 } 2124 } 2125 } 2126 } 2127 2128 /* Looking for a system file or file still not found */ 2129 if (fullname == NULL) { 2130 /* 2131 * Look for it on the system path 2132 */ 2133 fullname = Dir_FindFile(file, 2134 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2135 } 2136 2137 if (fullname == NULL) { 2138 if (!silent) 2139 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2140 return; 2141 } 2142 2143 /* Actually open the file... */ 2144 fd = open(fullname, O_RDONLY); 2145 if (fd == -1) { 2146 if (!silent) 2147 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2148 free(fullname); 2149 return; 2150 } 2151 2152 /* load it */ 2153 lf = loadfile(fullname, fd); 2154 2155 /* Start reading from this file next */ 2156 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2157 curFile->lf = lf; 2158 } 2159 2160 static void 2161 ParseDoInclude(char *line) 2162 { 2163 char endc; /* the character which ends the file spec */ 2164 char *cp; /* current position in file spec */ 2165 int silent = (*line != 'i') ? 1 : 0; 2166 char *file = &line[7 + silent]; 2167 2168 /* Skip to delimiter character so we know where to look */ 2169 while (*file == ' ' || *file == '\t') 2170 file++; 2171 2172 if (*file != '"' && *file != '<') { 2173 Parse_Error(PARSE_FATAL, 2174 ".include filename must be delimited by '\"' or '<'"); 2175 return; 2176 } 2177 2178 /* 2179 * Set the search path on which to find the include file based on the 2180 * characters which bracket its name. Angle-brackets imply it's 2181 * a system Makefile while double-quotes imply it's a user makefile 2182 */ 2183 if (*file == '<') { 2184 endc = '>'; 2185 } else { 2186 endc = '"'; 2187 } 2188 2189 /* Skip to matching delimiter */ 2190 for (cp = ++file; *cp && *cp != endc; cp++) 2191 continue; 2192 2193 if (*cp != endc) { 2194 Parse_Error(PARSE_FATAL, 2195 "Unclosed %cinclude filename. '%c' expected", 2196 '.', endc); 2197 return; 2198 } 2199 *cp = '\0'; 2200 2201 /* 2202 * Substitute for any variables in the file name before trying to 2203 * find the thing. 2204 */ 2205 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2206 2207 Parse_include_file(file, endc == '>', silent); 2208 free(file); 2209 } 2210 2211 2212 /*- 2213 *--------------------------------------------------------------------- 2214 * ParseSetParseFile -- 2215 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2216 * basename of the given filename 2217 * 2218 * Results: 2219 * None 2220 * 2221 * Side Effects: 2222 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2223 * dirname and basename of the given filename. 2224 *--------------------------------------------------------------------- 2225 */ 2226 static void 2227 ParseSetParseFile(const char *filename) 2228 { 2229 char *slash, *dirname; 2230 const char *pd, *pf; 2231 int len; 2232 2233 slash = strrchr(filename, '/'); 2234 if (slash == NULL) { 2235 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2236 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2237 dirname= NULL; 2238 } else { 2239 len = slash - filename; 2240 dirname = bmake_malloc(len + 1); 2241 memcpy(dirname, filename, len); 2242 dirname[len] = '\0'; 2243 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2244 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2245 } 2246 if (DEBUG(PARSE)) 2247 fprintf(debug_file, "ParseSetParseFile: ${.PARSEDIR} = `%s' " 2248 "${.PARSEFILE} = `%s'\n", pd, pf); 2249 free(dirname); 2250 } 2251 2252 /* 2253 * Track the makefiles we read - so makefiles can 2254 * set dependencies on them. 2255 * Avoid adding anything more than once. 2256 */ 2257 2258 static void 2259 ParseTrackInput(const char *name) 2260 { 2261 char *old; 2262 char *fp = NULL; 2263 size_t name_len = strlen(name); 2264 2265 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2266 if (old) { 2267 /* does it contain name? */ 2268 for (; old != NULL; old = strchr(old, ' ')) { 2269 if (*old == ' ') 2270 old++; 2271 if (memcmp(old, name, name_len) == 0 2272 && (old[name_len] == 0 || old[name_len] == ' ')) 2273 goto cleanup; 2274 } 2275 } 2276 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2277 cleanup: 2278 if (fp) { 2279 free(fp); 2280 } 2281 } 2282 2283 2284 /*- 2285 *--------------------------------------------------------------------- 2286 * Parse_setInput -- 2287 * Start Parsing from the given source 2288 * 2289 * Results: 2290 * None 2291 * 2292 * Side Effects: 2293 * A structure is added to the includes Lst and readProc, lineno, 2294 * fname and curFile are altered for the new file 2295 *--------------------------------------------------------------------- 2296 */ 2297 void 2298 Parse_SetInput(const char *name, int line, int fd, 2299 char *(*nextbuf)(void *, size_t *), void *arg) 2300 { 2301 char *buf; 2302 size_t len; 2303 2304 if (name == NULL) 2305 name = curFile->fname; 2306 else 2307 ParseTrackInput(name); 2308 2309 if (DEBUG(PARSE)) 2310 fprintf(debug_file, "Parse_SetInput: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2311 name, line, fd, nextbuf, arg); 2312 2313 if (fd == -1 && nextbuf == NULL) 2314 /* sanity */ 2315 return; 2316 2317 if (curFile != NULL) 2318 /* Save exiting file info */ 2319 Lst_AtFront(includes, curFile); 2320 2321 /* Allocate and fill in new structure */ 2322 curFile = bmake_malloc(sizeof *curFile); 2323 2324 /* 2325 * Once the previous state has been saved, we can get down to reading 2326 * the new file. We set up the name of the file to be the absolute 2327 * name of the include file so error messages refer to the right 2328 * place. 2329 */ 2330 curFile->fname = name; 2331 curFile->lineno = line; 2332 curFile->first_lineno = line; 2333 curFile->nextbuf = nextbuf; 2334 curFile->nextbuf_arg = arg; 2335 curFile->lf = NULL; 2336 2337 assert(nextbuf != NULL); 2338 2339 /* Get first block of input data */ 2340 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2341 if (buf == NULL) { 2342 /* Was all a waste of time ... */ 2343 free(curFile); 2344 return; 2345 } 2346 curFile->P_str = buf; 2347 curFile->P_ptr = buf; 2348 curFile->P_end = buf+len; 2349 2350 curFile->cond_depth = Cond_save_depth(); 2351 ParseSetParseFile(name); 2352 } 2353 2354 #ifdef SYSVINCLUDE 2355 /*- 2356 *--------------------------------------------------------------------- 2357 * ParseTraditionalInclude -- 2358 * Push to another file. 2359 * 2360 * The input is the current line. The file name(s) are 2361 * following the "include". 2362 * 2363 * Results: 2364 * None 2365 * 2366 * Side Effects: 2367 * A structure is added to the includes Lst and readProc, lineno, 2368 * fname and curFILE are altered for the new file 2369 *--------------------------------------------------------------------- 2370 */ 2371 static void 2372 ParseTraditionalInclude(char *line) 2373 { 2374 char *cp; /* current position in file spec */ 2375 int done = 0; 2376 int silent = (line[0] != 'i') ? 1 : 0; 2377 char *file = &line[silent + 7]; 2378 char *all_files; 2379 2380 if (DEBUG(PARSE)) { 2381 fprintf(debug_file, "ParseTraditionalInclude: %s\n", file); 2382 } 2383 2384 /* 2385 * Skip over whitespace 2386 */ 2387 while (isspace((unsigned char)*file)) 2388 file++; 2389 2390 /* 2391 * Substitute for any variables in the file name before trying to 2392 * find the thing. 2393 */ 2394 all_files = Var_Subst(NULL, file, VAR_CMD, FALSE); 2395 2396 if (*file == '\0') { 2397 Parse_Error(PARSE_FATAL, 2398 "Filename missing from \"include\""); 2399 return; 2400 } 2401 2402 for (file = all_files; !done; file = cp + 1) { 2403 /* Skip to end of line or next whitespace */ 2404 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2405 continue; 2406 2407 if (*cp) 2408 *cp = '\0'; 2409 else 2410 done = 1; 2411 2412 Parse_include_file(file, FALSE, silent); 2413 } 2414 free(all_files); 2415 } 2416 #endif 2417 2418 #ifdef GMAKEEXPORT 2419 /*- 2420 *--------------------------------------------------------------------- 2421 * ParseGmakeExport -- 2422 * Parse export <variable>=<value> 2423 * 2424 * And set the environment with it. 2425 * 2426 * Results: 2427 * None 2428 * 2429 * Side Effects: 2430 * None 2431 *--------------------------------------------------------------------- 2432 */ 2433 static void 2434 ParseGmakeExport(char *line) 2435 { 2436 char *variable = &line[6]; 2437 char *value; 2438 2439 if (DEBUG(PARSE)) { 2440 fprintf(debug_file, "ParseGmakeExport: %s\n", variable); 2441 } 2442 2443 /* 2444 * Skip over whitespace 2445 */ 2446 while (isspace((unsigned char)*variable)) 2447 variable++; 2448 2449 for (value = variable; *value && *value != '='; value++) 2450 continue; 2451 2452 if (*value != '=') { 2453 Parse_Error(PARSE_FATAL, 2454 "Variable/Value missing from \"export\""); 2455 return; 2456 } 2457 2458 /* 2459 * Expand the value before putting it in the environment. 2460 */ 2461 value = Var_Subst(NULL, value, VAR_CMD, FALSE); 2462 setenv(variable, value, 1); 2463 } 2464 #endif 2465 2466 /*- 2467 *--------------------------------------------------------------------- 2468 * ParseEOF -- 2469 * Called when EOF is reached in the current file. If we were reading 2470 * an include file, the includes stack is popped and things set up 2471 * to go back to reading the previous file at the previous location. 2472 * 2473 * Results: 2474 * CONTINUE if there's more to do. DONE if not. 2475 * 2476 * Side Effects: 2477 * The old curFILE, is closed. The includes list is shortened. 2478 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2479 *--------------------------------------------------------------------- 2480 */ 2481 static int 2482 ParseEOF(void) 2483 { 2484 char *ptr; 2485 size_t len; 2486 2487 assert(curFile->nextbuf != NULL); 2488 2489 /* get next input buffer, if any */ 2490 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2491 curFile->P_ptr = ptr; 2492 curFile->P_str = ptr; 2493 curFile->P_end = ptr + len; 2494 curFile->lineno = curFile->first_lineno; 2495 if (ptr != NULL) { 2496 /* Iterate again */ 2497 return CONTINUE; 2498 } 2499 2500 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2501 Cond_restore_depth(curFile->cond_depth); 2502 2503 if (curFile->lf != NULL) { 2504 loadedfile_destroy(curFile->lf); 2505 curFile->lf = NULL; 2506 } 2507 2508 /* Dispose of curFile info */ 2509 /* Leak curFile->fname because all the gnodes have pointers to it */ 2510 free(curFile->P_str); 2511 free(curFile); 2512 2513 curFile = Lst_DeQueue(includes); 2514 2515 if (curFile == NULL) { 2516 /* We've run out of input */ 2517 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2518 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2519 return DONE; 2520 } 2521 2522 if (DEBUG(PARSE)) 2523 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2524 curFile->fname, curFile->lineno); 2525 2526 /* Restore the PARSEDIR/PARSEFILE variables */ 2527 ParseSetParseFile(curFile->fname); 2528 return (CONTINUE); 2529 } 2530 2531 #define PARSE_RAW 1 2532 #define PARSE_SKIP 2 2533 2534 static char * 2535 ParseGetLine(int flags, int *length) 2536 { 2537 IFile *cf = curFile; 2538 char *ptr; 2539 char ch; 2540 char *line; 2541 char *line_end; 2542 char *escaped; 2543 char *comment; 2544 char *tp; 2545 2546 /* Loop through blank lines and comment lines */ 2547 for (;;) { 2548 cf->lineno++; 2549 line = cf->P_ptr; 2550 ptr = line; 2551 line_end = line; 2552 escaped = NULL; 2553 comment = NULL; 2554 for (;;) { 2555 if (cf->P_end != NULL && ptr == cf->P_end) { 2556 /* end of buffer */ 2557 ch = 0; 2558 break; 2559 } 2560 ch = *ptr; 2561 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2562 if (cf->P_end == NULL) 2563 /* End of string (aka for loop) data */ 2564 break; 2565 if (cf->nextbuf != NULL) { 2566 /* 2567 * End of this buffer; return EOF and outer logic 2568 * will get the next one. (eww) 2569 */ 2570 break; 2571 } 2572 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2573 return NULL; 2574 } 2575 2576 if (ch == '\\') { 2577 /* Don't treat next character as special, remember first one */ 2578 if (escaped == NULL) 2579 escaped = ptr; 2580 if (ptr[1] == '\n') 2581 cf->lineno++; 2582 ptr += 2; 2583 line_end = ptr; 2584 continue; 2585 } 2586 if (ch == '#' && comment == NULL) { 2587 /* Remember first '#' for comment stripping */ 2588 /* Unless previous char was '[', as in modifier :[#] */ 2589 if (!(ptr > line && ptr[-1] == '[')) 2590 comment = line_end; 2591 } 2592 ptr++; 2593 if (ch == '\n') 2594 break; 2595 if (!isspace((unsigned char)ch)) 2596 /* We are not interested in trailing whitespace */ 2597 line_end = ptr; 2598 } 2599 2600 /* Save next 'to be processed' location */ 2601 cf->P_ptr = ptr; 2602 2603 /* Check we have a non-comment, non-blank line */ 2604 if (line_end == line || comment == line) { 2605 if (ch == 0) 2606 /* At end of file */ 2607 return NULL; 2608 /* Parse another line */ 2609 continue; 2610 } 2611 2612 /* We now have a line of data */ 2613 *line_end = 0; 2614 2615 if (flags & PARSE_RAW) { 2616 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2617 *length = line_end - line; 2618 return line; 2619 } 2620 2621 if (flags & PARSE_SKIP) { 2622 /* Completely ignore non-directives */ 2623 if (line[0] != '.') 2624 continue; 2625 /* We could do more of the .else/.elif/.endif checks here */ 2626 } 2627 break; 2628 } 2629 2630 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2631 if (comment != NULL && line[0] != '\t') { 2632 line_end = comment; 2633 *line_end = 0; 2634 } 2635 2636 /* If we didn't see a '\\' then the in-situ data is fine */ 2637 if (escaped == NULL) { 2638 *length = line_end - line; 2639 return line; 2640 } 2641 2642 /* Remove escapes from '\n' and '#' */ 2643 tp = ptr = escaped; 2644 escaped = line; 2645 for (; ; *tp++ = ch) { 2646 ch = *ptr++; 2647 if (ch != '\\') { 2648 if (ch == 0) 2649 break; 2650 continue; 2651 } 2652 2653 ch = *ptr++; 2654 if (ch == 0) { 2655 /* Delete '\\' at end of buffer */ 2656 tp--; 2657 break; 2658 } 2659 2660 if (ch == '#' && line[0] != '\t') 2661 /* Delete '\\' from before '#' on non-command lines */ 2662 continue; 2663 2664 if (ch != '\n') { 2665 /* Leave '\\' in buffer for later */ 2666 *tp++ = '\\'; 2667 /* Make sure we don't delete an escaped ' ' from the line end */ 2668 escaped = tp + 1; 2669 continue; 2670 } 2671 2672 /* Escaped '\n' replace following whitespace with a single ' ' */ 2673 while (ptr[0] == ' ' || ptr[0] == '\t') 2674 ptr++; 2675 ch = ' '; 2676 } 2677 2678 /* Delete any trailing spaces - eg from empty continuations */ 2679 while (tp > escaped && isspace((unsigned char)tp[-1])) 2680 tp--; 2681 2682 *tp = 0; 2683 *length = tp - line; 2684 return line; 2685 } 2686 2687 /*- 2688 *--------------------------------------------------------------------- 2689 * ParseReadLine -- 2690 * Read an entire line from the input file. Called only by Parse_File. 2691 * 2692 * Results: 2693 * A line w/o its newline 2694 * 2695 * Side Effects: 2696 * Only those associated with reading a character 2697 *--------------------------------------------------------------------- 2698 */ 2699 static char * 2700 ParseReadLine(void) 2701 { 2702 char *line; /* Result */ 2703 int lineLength; /* Length of result */ 2704 int lineno; /* Saved line # */ 2705 int rval; 2706 2707 for (;;) { 2708 line = ParseGetLine(0, &lineLength); 2709 if (line == NULL) 2710 return NULL; 2711 2712 if (line[0] != '.') 2713 return line; 2714 2715 /* 2716 * The line might be a conditional. Ask the conditional module 2717 * about it and act accordingly 2718 */ 2719 switch (Cond_Eval(line)) { 2720 case COND_SKIP: 2721 /* Skip to next conditional that evaluates to COND_PARSE. */ 2722 do { 2723 line = ParseGetLine(PARSE_SKIP, &lineLength); 2724 } while (line && Cond_Eval(line) != COND_PARSE); 2725 if (line == NULL) 2726 break; 2727 continue; 2728 case COND_PARSE: 2729 continue; 2730 case COND_INVALID: /* Not a conditional line */ 2731 /* Check for .for loops */ 2732 rval = For_Eval(line); 2733 if (rval == 0) 2734 /* Not a .for line */ 2735 break; 2736 if (rval < 0) 2737 /* Syntax error - error printed, ignore line */ 2738 continue; 2739 /* Start of a .for loop */ 2740 lineno = curFile->lineno; 2741 /* Accumulate loop lines until matching .endfor */ 2742 do { 2743 line = ParseGetLine(PARSE_RAW, &lineLength); 2744 if (line == NULL) { 2745 Parse_Error(PARSE_FATAL, 2746 "Unexpected end of file in for loop."); 2747 break; 2748 } 2749 } while (For_Accum(line)); 2750 /* Stash each iteration as a new 'input file' */ 2751 For_Run(lineno); 2752 /* Read next line from for-loop buffer */ 2753 continue; 2754 } 2755 return (line); 2756 } 2757 } 2758 2759 /*- 2760 *----------------------------------------------------------------------- 2761 * ParseFinishLine -- 2762 * Handle the end of a dependency group. 2763 * 2764 * Results: 2765 * Nothing. 2766 * 2767 * Side Effects: 2768 * inLine set FALSE. 'targets' list destroyed. 2769 * 2770 *----------------------------------------------------------------------- 2771 */ 2772 static void 2773 ParseFinishLine(void) 2774 { 2775 if (inLine) { 2776 Lst_ForEach(targets, Suff_EndTransform, NULL); 2777 Lst_Destroy(targets, ParseHasCommands); 2778 targets = NULL; 2779 inLine = FALSE; 2780 } 2781 } 2782 2783 2784 /*- 2785 *--------------------------------------------------------------------- 2786 * Parse_File -- 2787 * Parse a file into its component parts, incorporating it into the 2788 * current dependency graph. This is the main function and controls 2789 * almost every other function in this module 2790 * 2791 * Input: 2792 * name the name of the file being read 2793 * fd Open file to makefile to parse 2794 * 2795 * Results: 2796 * None 2797 * 2798 * Side Effects: 2799 * closes fd. 2800 * Loads. Nodes are added to the list of all targets, nodes and links 2801 * are added to the dependency graph. etc. etc. etc. 2802 *--------------------------------------------------------------------- 2803 */ 2804 void 2805 Parse_File(const char *name, int fd) 2806 { 2807 char *cp; /* pointer into the line */ 2808 char *line; /* the line we're working on */ 2809 struct loadedfile *lf; 2810 2811 lf = loadfile(name, fd); 2812 2813 inLine = FALSE; 2814 fatals = 0; 2815 2816 if (name == NULL) { 2817 name = "(stdin)"; 2818 } 2819 2820 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2821 curFile->lf = lf; 2822 2823 do { 2824 for (; (line = ParseReadLine()) != NULL; ) { 2825 if (DEBUG(PARSE)) 2826 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2827 curFile->lineno, line); 2828 if (*line == '.') { 2829 /* 2830 * Lines that begin with the special character may be 2831 * include or undef directives. 2832 * On the other hand they can be suffix rules (.c.o: ...) 2833 * or just dependencies for filenames that start '.'. 2834 */ 2835 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 2836 continue; 2837 } 2838 if (strncmp(cp, "include", 7) == 0 || 2839 ((cp[0] == 's' || cp[0] == '-') && 2840 strncmp(&cp[1], "include", 7) == 0)) { 2841 ParseDoInclude(cp); 2842 continue; 2843 } 2844 if (strncmp(cp, "undef", 5) == 0) { 2845 char *cp2; 2846 for (cp += 5; isspace((unsigned char) *cp); cp++) 2847 continue; 2848 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2849 (*cp2 != '\0'); cp2++) 2850 continue; 2851 *cp2 = '\0'; 2852 Var_Delete(cp, VAR_GLOBAL); 2853 continue; 2854 } else if (strncmp(cp, "export", 6) == 0) { 2855 for (cp += 6; isspace((unsigned char) *cp); cp++) 2856 continue; 2857 Var_Export(cp, 1); 2858 continue; 2859 } else if (strncmp(cp, "unexport", 8) == 0) { 2860 Var_UnExport(cp); 2861 continue; 2862 } else if (strncmp(cp, "info", 4) == 0 || 2863 strncmp(cp, "error", 5) == 0 || 2864 strncmp(cp, "warning", 7) == 0) { 2865 if (ParseMessage(cp)) 2866 continue; 2867 } 2868 } 2869 2870 if (*line == '\t') { 2871 /* 2872 * If a line starts with a tab, it can only hope to be 2873 * a creation command. 2874 */ 2875 cp = line + 1; 2876 shellCommand: 2877 for (; isspace ((unsigned char)*cp); cp++) { 2878 continue; 2879 } 2880 if (*cp) { 2881 if (!inLine) 2882 Parse_Error(PARSE_FATAL, 2883 "Unassociated shell command \"%s\"", 2884 cp); 2885 /* 2886 * So long as it's not a blank line and we're actually 2887 * in a dependency spec, add the command to the list of 2888 * commands of all targets in the dependency spec 2889 */ 2890 if (targets) { 2891 cp = bmake_strdup(cp); 2892 Lst_ForEach(targets, ParseAddCmd, cp); 2893 #ifdef CLEANUP 2894 Lst_AtEnd(targCmds, cp); 2895 #endif 2896 } 2897 } 2898 continue; 2899 } 2900 2901 #ifdef SYSVINCLUDE 2902 if (((strncmp(line, "include", 7) == 0 && 2903 isspace((unsigned char) line[7])) || 2904 ((line[0] == 's' || line[0] == '-') && 2905 strncmp(&line[1], "include", 7) == 0 && 2906 isspace((unsigned char) line[8]))) && 2907 strchr(line, ':') == NULL) { 2908 /* 2909 * It's an S3/S5-style "include". 2910 */ 2911 ParseTraditionalInclude(line); 2912 continue; 2913 } 2914 #endif 2915 #ifdef GMAKEEXPORT 2916 if (strncmp(line, "export", 6) == 0 && 2917 isspace((unsigned char) line[6]) && 2918 strchr(line, ':') == NULL) { 2919 /* 2920 * It's a Gmake "export". 2921 */ 2922 ParseGmakeExport(line); 2923 continue; 2924 } 2925 #endif 2926 if (Parse_IsVar(line)) { 2927 ParseFinishLine(); 2928 Parse_DoVar(line, VAR_GLOBAL); 2929 continue; 2930 } 2931 2932 #ifndef POSIX 2933 /* 2934 * To make life easier on novices, if the line is indented we 2935 * first make sure the line has a dependency operator in it. 2936 * If it doesn't have an operator and we're in a dependency 2937 * line's script, we assume it's actually a shell command 2938 * and add it to the current list of targets. 2939 */ 2940 cp = line; 2941 if (isspace((unsigned char) line[0])) { 2942 while ((*cp != '\0') && isspace((unsigned char) *cp)) 2943 cp++; 2944 while (*cp && (ParseIsEscaped(line, cp) || 2945 (*cp != ':') && (*cp != '!'))) { 2946 cp++; 2947 } 2948 if (*cp == '\0') { 2949 if (inLine) { 2950 Parse_Error(PARSE_WARNING, 2951 "Shell command needs a leading tab"); 2952 goto shellCommand; 2953 } 2954 } 2955 } 2956 #endif 2957 ParseFinishLine(); 2958 2959 /* 2960 * For some reason - probably to make the parser impossible - 2961 * a ';' can be used to separate commands from dependencies. 2962 * Attempt to avoid ';' inside substitution patterns. 2963 */ 2964 { 2965 int level = 0; 2966 2967 for (cp = line; *cp != 0; cp++) { 2968 if (*cp == '\\' && cp[1] != 0) { 2969 cp++; 2970 continue; 2971 } 2972 if (*cp == '$' && 2973 (cp[1] == '(' || cp[1] == '{')) { 2974 level++; 2975 continue; 2976 } 2977 if (level > 0) { 2978 if (*cp == ')' || *cp == '}') { 2979 level--; 2980 continue; 2981 } 2982 } else if (*cp == ';') { 2983 break; 2984 } 2985 } 2986 } 2987 if (*cp != 0) 2988 /* Terminate the dependency list at the ';' */ 2989 *cp++ = 0; 2990 else 2991 cp = NULL; 2992 2993 /* 2994 * We now know it's a dependency line so it needs to have all 2995 * variables expanded before being parsed. Tell the variable 2996 * module to complain if some variable is undefined... 2997 */ 2998 line = Var_Subst(NULL, line, VAR_CMD, TRUE); 2999 3000 /* 3001 * Need a non-circular list for the target nodes 3002 */ 3003 if (targets) 3004 Lst_Destroy(targets, NULL); 3005 3006 targets = Lst_Init(FALSE); 3007 inLine = TRUE; 3008 3009 ParseDoDependency(line); 3010 free(line); 3011 3012 /* If there were commands after a ';', add them now */ 3013 if (cp != NULL) { 3014 goto shellCommand; 3015 } 3016 } 3017 /* 3018 * Reached EOF, but it may be just EOF of an include file... 3019 */ 3020 } while (ParseEOF() == CONTINUE); 3021 3022 if (fatals) { 3023 (void)fflush(stdout); 3024 (void)fprintf(stderr, 3025 "%s: Fatal errors encountered -- cannot continue", 3026 progname); 3027 PrintOnError(NULL, NULL); 3028 exit(1); 3029 } 3030 } 3031 3032 /*- 3033 *--------------------------------------------------------------------- 3034 * Parse_Init -- 3035 * initialize the parsing module 3036 * 3037 * Results: 3038 * none 3039 * 3040 * Side Effects: 3041 * the parseIncPath list is initialized... 3042 *--------------------------------------------------------------------- 3043 */ 3044 void 3045 Parse_Init(void) 3046 { 3047 mainNode = NULL; 3048 parseIncPath = Lst_Init(FALSE); 3049 sysIncPath = Lst_Init(FALSE); 3050 defIncPath = Lst_Init(FALSE); 3051 includes = Lst_Init(FALSE); 3052 #ifdef CLEANUP 3053 targCmds = Lst_Init(FALSE); 3054 #endif 3055 } 3056 3057 void 3058 Parse_End(void) 3059 { 3060 #ifdef CLEANUP 3061 Lst_Destroy(targCmds, (FreeProc *)free); 3062 if (targets) 3063 Lst_Destroy(targets, NULL); 3064 Lst_Destroy(defIncPath, Dir_Destroy); 3065 Lst_Destroy(sysIncPath, Dir_Destroy); 3066 Lst_Destroy(parseIncPath, Dir_Destroy); 3067 Lst_Destroy(includes, NULL); /* Should be empty now */ 3068 #endif 3069 } 3070 3071 3072 /*- 3073 *----------------------------------------------------------------------- 3074 * Parse_MainName -- 3075 * Return a Lst of the main target to create for main()'s sake. If 3076 * no such target exists, we Punt with an obnoxious error message. 3077 * 3078 * Results: 3079 * A Lst of the single node to create. 3080 * 3081 * Side Effects: 3082 * None. 3083 * 3084 *----------------------------------------------------------------------- 3085 */ 3086 Lst 3087 Parse_MainName(void) 3088 { 3089 Lst mainList; /* result list */ 3090 3091 mainList = Lst_Init(FALSE); 3092 3093 if (mainNode == NULL) { 3094 Punt("no target to make."); 3095 /*NOTREACHED*/ 3096 } else if (mainNode->type & OP_DOUBLEDEP) { 3097 (void)Lst_AtEnd(mainList, mainNode); 3098 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3099 } 3100 else 3101 (void)Lst_AtEnd(mainList, mainNode); 3102 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3103 return (mainList); 3104 } 3105 3106 /*- 3107 *----------------------------------------------------------------------- 3108 * ParseMark -- 3109 * Add the filename and lineno to the GNode so that we remember 3110 * where it was first defined. 3111 * 3112 * Side Effects: 3113 * None. 3114 * 3115 *----------------------------------------------------------------------- 3116 */ 3117 static void 3118 ParseMark(GNode *gn) 3119 { 3120 gn->fname = curFile->fname; 3121 gn->lineno = curFile->lineno; 3122 } 3123