1 /* $NetBSD: parse.c,v 1.188 2013/03/22 16:07:59 sjg 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 1.188 2013/03/22 16:07:59 sjg 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 1.188 2013/03/22 16:07:59 sjg 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 Stale, /* .STALE */ 217 Suffixes, /* .SUFFIXES */ 218 Wait, /* .WAIT */ 219 Attribute /* Generic attribute */ 220 } ParseSpecial; 221 222 /* 223 * Other tokens 224 */ 225 #define LPAREN '(' 226 #define RPAREN ')' 227 228 229 //////////////////////////////////////////////////////////// 230 // result data 231 232 /* 233 * The main target to create. This is the first target on the first 234 * dependency line in the first makefile. 235 */ 236 static GNode *mainNode; 237 238 //////////////////////////////////////////////////////////// 239 // eval state 240 241 /* targets we're working on */ 242 static Lst targets; 243 244 #ifdef CLEANUP 245 /* command lines for targets */ 246 static Lst targCmds; 247 #endif 248 249 /* 250 * specType contains the SPECial TYPE of the current target. It is 251 * Not if the target is unspecial. If it *is* special, however, the children 252 * are linked as children of the parent but not vice versa. This variable is 253 * set in ParseDoDependency 254 */ 255 static ParseSpecial specType; 256 257 /* 258 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER 259 * seen, then set to each successive source on the line. 260 */ 261 static GNode *predecessor; 262 263 //////////////////////////////////////////////////////////// 264 // parser state 265 266 /* true if currently in a dependency line or its commands */ 267 static Boolean inLine; 268 269 /* number of fatal errors */ 270 static int fatals = 0; 271 272 /* 273 * Variables for doing includes 274 */ 275 276 /* current file being read */ 277 static IFile *curFile; 278 279 /* stack of IFiles generated by .includes */ 280 static Lst includes; 281 282 /* include paths (lists of directories) */ 283 Lst parseIncPath; /* dirs for "..." includes */ 284 Lst sysIncPath; /* dirs for <...> includes */ 285 Lst defIncPath; /* default for sysIncPath */ 286 287 //////////////////////////////////////////////////////////// 288 // parser tables 289 290 /* 291 * The parseKeywords table is searched using binary search when deciding 292 * if a target or source is special. The 'spec' field is the ParseSpecial 293 * type of the keyword ("Not" if the keyword isn't special as a target) while 294 * the 'op' field is the operator to apply to the list of targets if the 295 * keyword is used as a source ("0" if the keyword isn't special as a source) 296 */ 297 static const struct { 298 const char *name; /* Name of keyword */ 299 ParseSpecial spec; /* Type when used as a target */ 300 int op; /* Operator when used as a source */ 301 } parseKeywords[] = { 302 { ".BEGIN", Begin, 0 }, 303 { ".DEFAULT", Default, 0 }, 304 { ".END", End, 0 }, 305 { ".ERROR", dotError, 0 }, 306 { ".EXEC", Attribute, OP_EXEC }, 307 { ".IGNORE", Ignore, OP_IGNORE }, 308 { ".INCLUDES", Includes, 0 }, 309 { ".INTERRUPT", Interrupt, 0 }, 310 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 311 { ".JOIN", Attribute, OP_JOIN }, 312 { ".LIBS", Libs, 0 }, 313 { ".MADE", Attribute, OP_MADE }, 314 { ".MAIN", Main, 0 }, 315 { ".MAKE", Attribute, OP_MAKE }, 316 { ".MAKEFLAGS", MFlags, 0 }, 317 { ".META", Meta, OP_META }, 318 { ".MFLAGS", MFlags, 0 }, 319 { ".NOMETA", NoMeta, OP_NOMETA }, 320 { ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP }, 321 { ".NOPATH", NoPath, OP_NOPATH }, 322 { ".NOTMAIN", Attribute, OP_NOTMAIN }, 323 { ".NOTPARALLEL", NotParallel, 0 }, 324 { ".NO_PARALLEL", NotParallel, 0 }, 325 { ".NULL", Null, 0 }, 326 { ".OBJDIR", ExObjdir, 0 }, 327 { ".OPTIONAL", Attribute, OP_OPTIONAL }, 328 { ".ORDER", Order, 0 }, 329 { ".PARALLEL", Parallel, 0 }, 330 { ".PATH", ExPath, 0 }, 331 { ".PHONY", Phony, OP_PHONY }, 332 #ifdef POSIX 333 { ".POSIX", Posix, 0 }, 334 #endif 335 { ".PRECIOUS", Precious, OP_PRECIOUS }, 336 { ".RECURSIVE", Attribute, OP_MAKE }, 337 { ".SHELL", ExShell, 0 }, 338 { ".SILENT", Silent, OP_SILENT }, 339 { ".SINGLESHELL", SingleShell, 0 }, 340 { ".STALE", Stale, 0 }, 341 { ".SUFFIXES", Suffixes, 0 }, 342 { ".USE", Attribute, OP_USE }, 343 { ".USEBEFORE", Attribute, OP_USEBEFORE }, 344 { ".WAIT", Wait, 0 }, 345 }; 346 347 //////////////////////////////////////////////////////////// 348 // local functions 349 350 static int ParseIsEscaped(const char *, const char *); 351 static void ParseErrorInternal(const char *, size_t, int, const char *, ...) 352 MAKE_ATTR_PRINTFLIKE(4,5); 353 static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list) 354 MAKE_ATTR_PRINTFLIKE(5, 0); 355 static int ParseFindKeyword(const char *); 356 static int ParseLinkSrc(void *, void *); 357 static int ParseDoOp(void *, void *); 358 static void ParseDoSrc(int, const char *); 359 static int ParseFindMain(void *, void *); 360 static int ParseAddDir(void *, void *); 361 static int ParseClearPath(void *, void *); 362 static void ParseDoDependency(char *); 363 static int ParseAddCmd(void *, void *); 364 static void ParseHasCommands(void *); 365 static void ParseDoInclude(char *); 366 static void ParseSetParseFile(const char *); 367 #ifdef SYSVINCLUDE 368 static void ParseTraditionalInclude(char *); 369 #endif 370 #ifdef GMAKEEXPORT 371 static void ParseGmakeExport(char *); 372 #endif 373 static int ParseEOF(void); 374 static char *ParseReadLine(void); 375 static void ParseFinishLine(void); 376 static void ParseMark(GNode *); 377 378 //////////////////////////////////////////////////////////// 379 // file loader 380 381 struct loadedfile { 382 const char *path; /* name, for error reports */ 383 char *buf; /* contents buffer */ 384 size_t len; /* length of contents */ 385 size_t maplen; /* length of mmap area, or 0 */ 386 Boolean used; /* XXX: have we used the data yet */ 387 }; 388 389 /* 390 * Constructor/destructor for loadedfile 391 */ 392 static struct loadedfile * 393 loadedfile_create(const char *path) 394 { 395 struct loadedfile *lf; 396 397 lf = bmake_malloc(sizeof(*lf)); 398 lf->path = (path == NULL ? "(stdin)" : path); 399 lf->buf = NULL; 400 lf->len = 0; 401 lf->maplen = 0; 402 lf->used = FALSE; 403 return lf; 404 } 405 406 static void 407 loadedfile_destroy(struct loadedfile *lf) 408 { 409 if (lf->buf != NULL) { 410 if (lf->maplen > 0) { 411 #ifdef HAVE_MMAP 412 munmap(lf->buf, lf->maplen); 413 #endif 414 } else { 415 free(lf->buf); 416 } 417 } 418 free(lf); 419 } 420 421 /* 422 * nextbuf() operation for loadedfile, as needed by the weird and twisted 423 * logic below. Once that's cleaned up, we can get rid of lf->used... 424 */ 425 static char * 426 loadedfile_nextbuf(void *x, size_t *len) 427 { 428 struct loadedfile *lf = x; 429 430 if (lf->used) { 431 return NULL; 432 } 433 lf->used = TRUE; 434 *len = lf->len; 435 return lf->buf; 436 } 437 438 /* 439 * Try to get the size of a file. 440 */ 441 static ReturnStatus 442 load_getsize(int fd, size_t *ret) 443 { 444 struct stat st; 445 446 if (fstat(fd, &st) < 0) { 447 return FAILURE; 448 } 449 450 if (!S_ISREG(st.st_mode)) { 451 return FAILURE; 452 } 453 454 /* 455 * st_size is an off_t, which is 64 bits signed; *ret is 456 * size_t, which might be 32 bits unsigned or 64 bits 457 * unsigned. Rather than being elaborate, just punt on 458 * files that are more than 2^31 bytes. We should never 459 * see a makefile that size in practice... 460 * 461 * While we're at it reject negative sizes too, just in case. 462 */ 463 if (st.st_size < 0 || st.st_size > 0x7fffffff) { 464 return FAILURE; 465 } 466 467 *ret = (size_t) st.st_size; 468 return SUCCESS; 469 } 470 471 /* 472 * Read in a file. 473 * 474 * Until the path search logic can be moved under here instead of 475 * being in the caller in another source file, we need to have the fd 476 * passed in already open. Bleh. 477 * 478 * If the path is NULL use stdin and (to insure against fd leaks) 479 * assert that the caller passed in -1. 480 */ 481 static struct loadedfile * 482 loadfile(const char *path, int fd) 483 { 484 struct loadedfile *lf; 485 #ifdef HAVE_MMAP 486 long pagesize; 487 #endif 488 ssize_t result; 489 size_t bufpos; 490 491 lf = loadedfile_create(path); 492 493 if (path == NULL) { 494 assert(fd == -1); 495 fd = STDIN_FILENO; 496 } else { 497 #if 0 /* notyet */ 498 fd = open(path, O_RDONLY); 499 if (fd < 0) { 500 ... 501 Error("%s: %s", path, strerror(errno)); 502 exit(1); 503 } 504 #endif 505 } 506 507 #ifdef HAVE_MMAP 508 if (load_getsize(fd, &lf->len) == SUCCESS) { 509 /* found a size, try mmap */ 510 pagesize = sysconf(_SC_PAGESIZE); 511 if (pagesize <= 0) { 512 pagesize = 0x1000; 513 } 514 /* round size up to a page */ 515 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 516 517 /* 518 * XXX hack for dealing with empty files; remove when 519 * we're no longer limited by interfacing to the old 520 * logic elsewhere in this file. 521 */ 522 if (lf->maplen == 0) { 523 lf->maplen = pagesize; 524 } 525 526 /* 527 * FUTURE: remove PROT_WRITE when the parser no longer 528 * needs to scribble on the input. 529 */ 530 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 531 MAP_FILE|MAP_COPY, fd, 0); 532 if (lf->buf != MAP_FAILED) { 533 /* succeeded */ 534 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 535 char *b = malloc(lf->len + 1); 536 b[lf->len] = '\n'; 537 memcpy(b, lf->buf, lf->len++); 538 munmap(lf->buf, lf->maplen); 539 lf->maplen = 0; 540 lf->buf = b; 541 } 542 goto done; 543 } 544 } 545 #endif 546 /* cannot mmap; load the traditional way */ 547 548 lf->maplen = 0; 549 lf->len = 1024; 550 lf->buf = bmake_malloc(lf->len); 551 552 bufpos = 0; 553 while (1) { 554 assert(bufpos <= lf->len); 555 if (bufpos == lf->len) { 556 lf->len *= 2; 557 lf->buf = bmake_realloc(lf->buf, lf->len); 558 } 559 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 560 if (result < 0) { 561 Error("%s: read error: %s", path, strerror(errno)); 562 exit(1); 563 } 564 if (result == 0) { 565 break; 566 } 567 bufpos += result; 568 } 569 assert(bufpos <= lf->len); 570 lf->len = bufpos; 571 572 /* truncate malloc region to actual length (maybe not useful) */ 573 if (lf->len > 0) { 574 lf->buf = bmake_realloc(lf->buf, lf->len); 575 } 576 577 #ifdef HAVE_MMAP 578 done: 579 #endif 580 if (path != NULL) { 581 close(fd); 582 } 583 return lf; 584 } 585 586 //////////////////////////////////////////////////////////// 587 // old code 588 589 /*- 590 *---------------------------------------------------------------------- 591 * ParseIsEscaped -- 592 * Check if the current character is escaped on the current line 593 * 594 * Results: 595 * 0 if the character is not backslash escaped, 1 otherwise 596 * 597 * Side Effects: 598 * None 599 *---------------------------------------------------------------------- 600 */ 601 static int 602 ParseIsEscaped(const char *line, const char *c) 603 { 604 int active = 0; 605 for (;;) { 606 if (line == c) 607 return active; 608 if (*--c != '\\') 609 return active; 610 active = !active; 611 } 612 } 613 614 /*- 615 *---------------------------------------------------------------------- 616 * ParseFindKeyword -- 617 * Look in the table of keywords for one matching the given string. 618 * 619 * Input: 620 * str String to find 621 * 622 * Results: 623 * The index of the keyword, or -1 if it isn't there. 624 * 625 * Side Effects: 626 * None 627 *---------------------------------------------------------------------- 628 */ 629 static int 630 ParseFindKeyword(const char *str) 631 { 632 int start, end, cur; 633 int diff; 634 635 start = 0; 636 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 637 638 do { 639 cur = start + ((end - start) / 2); 640 diff = strcmp(str, parseKeywords[cur].name); 641 642 if (diff == 0) { 643 return (cur); 644 } else if (diff < 0) { 645 end = cur - 1; 646 } else { 647 start = cur + 1; 648 } 649 } while (start <= end); 650 return (-1); 651 } 652 653 /*- 654 * ParseVErrorInternal -- 655 * Error message abort function for parsing. Prints out the context 656 * of the error (line number and file) as well as the message with 657 * two optional arguments. 658 * 659 * Results: 660 * None 661 * 662 * Side Effects: 663 * "fatals" is incremented if the level is PARSE_FATAL. 664 */ 665 /* VARARGS */ 666 static void 667 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 668 const char *fmt, va_list ap) 669 { 670 static Boolean fatal_warning_error_printed = FALSE; 671 672 (void)fprintf(f, "%s: ", progname); 673 674 if (cfname != NULL) { 675 (void)fprintf(f, "\""); 676 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 677 char *cp; 678 const char *dir; 679 680 /* 681 * Nothing is more annoying than not knowing 682 * which Makefile is the culprit. 683 */ 684 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 685 if (dir == NULL || *dir == '\0' || 686 (*dir == '.' && dir[1] == '\0')) 687 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 688 if (dir == NULL) 689 dir = "."; 690 691 (void)fprintf(f, "%s/%s", dir, cfname); 692 } else 693 (void)fprintf(f, "%s", cfname); 694 695 (void)fprintf(f, "\" line %d: ", (int)clineno); 696 } 697 if (type == PARSE_WARNING) 698 (void)fprintf(f, "warning: "); 699 (void)vfprintf(f, fmt, ap); 700 (void)fprintf(f, "\n"); 701 (void)fflush(f); 702 if (type == PARSE_FATAL || parseWarnFatal) 703 fatals += 1; 704 if (parseWarnFatal && !fatal_warning_error_printed) { 705 Error("parsing warnings being treated as errors"); 706 fatal_warning_error_printed = TRUE; 707 } 708 } 709 710 /*- 711 * ParseErrorInternal -- 712 * Error function 713 * 714 * Results: 715 * None 716 * 717 * Side Effects: 718 * None 719 */ 720 /* VARARGS */ 721 static void 722 ParseErrorInternal(const char *cfname, size_t clineno, int type, 723 const char *fmt, ...) 724 { 725 va_list ap; 726 727 va_start(ap, fmt); 728 (void)fflush(stdout); 729 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 730 va_end(ap); 731 732 if (debug_file != stderr && debug_file != stdout) { 733 va_start(ap, fmt); 734 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 735 va_end(ap); 736 } 737 } 738 739 /*- 740 * Parse_Error -- 741 * External interface to ParseErrorInternal; uses the default filename 742 * Line number. 743 * 744 * Results: 745 * None 746 * 747 * Side Effects: 748 * None 749 */ 750 /* VARARGS */ 751 void 752 Parse_Error(int type, const char *fmt, ...) 753 { 754 va_list ap; 755 const char *fname; 756 size_t lineno; 757 758 if (curFile == NULL) { 759 fname = NULL; 760 lineno = 0; 761 } else { 762 fname = curFile->fname; 763 lineno = curFile->lineno; 764 } 765 766 va_start(ap, fmt); 767 (void)fflush(stdout); 768 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 769 va_end(ap); 770 771 if (debug_file != stderr && debug_file != stdout) { 772 va_start(ap, fmt); 773 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 774 va_end(ap); 775 } 776 } 777 778 779 /* 780 * ParseMessage 781 * Parse a .info .warning or .error directive 782 * 783 * The input is the line minus the ".". We substitute 784 * variables, print the message and exit(1) (for .error) or just print 785 * a warning if the directive is malformed. 786 */ 787 static Boolean 788 ParseMessage(char *line) 789 { 790 int mtype; 791 792 switch(*line) { 793 case 'i': 794 mtype = 0; 795 break; 796 case 'w': 797 mtype = PARSE_WARNING; 798 break; 799 case 'e': 800 mtype = PARSE_FATAL; 801 break; 802 default: 803 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 804 return FALSE; 805 } 806 807 while (isalpha((u_char)*line)) 808 line++; 809 if (!isspace((u_char)*line)) 810 return FALSE; /* not for us */ 811 while (isspace((u_char)*line)) 812 line++; 813 814 line = Var_Subst(NULL, line, VAR_CMD, 0); 815 Parse_Error(mtype, "%s", line); 816 free(line); 817 818 if (mtype == PARSE_FATAL) { 819 /* Terminate immediately. */ 820 exit(1); 821 } 822 return TRUE; 823 } 824 825 /*- 826 *--------------------------------------------------------------------- 827 * ParseLinkSrc -- 828 * Link the parent node to its new child. Used in a Lst_ForEach by 829 * ParseDoDependency. If the specType isn't 'Not', the parent 830 * isn't linked as a parent of the child. 831 * 832 * Input: 833 * pgnp The parent node 834 * cgpn The child node 835 * 836 * Results: 837 * Always = 0 838 * 839 * Side Effects: 840 * New elements are added to the parents list of cgn and the 841 * children list of cgn. the unmade field of pgn is updated 842 * to reflect the additional child. 843 *--------------------------------------------------------------------- 844 */ 845 static int 846 ParseLinkSrc(void *pgnp, void *cgnp) 847 { 848 GNode *pgn = (GNode *)pgnp; 849 GNode *cgn = (GNode *)cgnp; 850 851 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 852 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 853 (void)Lst_AtEnd(pgn->children, cgn); 854 if (specType == Not) 855 (void)Lst_AtEnd(cgn->parents, pgn); 856 pgn->unmade += 1; 857 if (DEBUG(PARSE)) { 858 fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name); 859 Targ_PrintNode(pgn, 0); 860 Targ_PrintNode(cgn, 0); 861 } 862 return (0); 863 } 864 865 /*- 866 *--------------------------------------------------------------------- 867 * ParseDoOp -- 868 * Apply the parsed operator to the given target node. Used in a 869 * Lst_ForEach call by ParseDoDependency once all targets have 870 * been found and their operator parsed. If the previous and new 871 * operators are incompatible, a major error is taken. 872 * 873 * Input: 874 * gnp The node to which the operator is to be applied 875 * opp The operator to apply 876 * 877 * Results: 878 * Always 0 879 * 880 * Side Effects: 881 * The type field of the node is altered to reflect any new bits in 882 * the op. 883 *--------------------------------------------------------------------- 884 */ 885 static int 886 ParseDoOp(void *gnp, void *opp) 887 { 888 GNode *gn = (GNode *)gnp; 889 int op = *(int *)opp; 890 /* 891 * If the dependency mask of the operator and the node don't match and 892 * the node has actually had an operator applied to it before, and 893 * the operator actually has some dependency information in it, complain. 894 */ 895 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 896 !OP_NOP(gn->type) && !OP_NOP(op)) 897 { 898 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 899 return (1); 900 } 901 902 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 903 /* 904 * If the node was the object of a :: operator, we need to create a 905 * new instance of it for the children and commands on this dependency 906 * line. The new instance is placed on the 'cohorts' list of the 907 * initial one (note the initial one is not on its own cohorts list) 908 * and the new instance is linked to all parents of the initial 909 * instance. 910 */ 911 GNode *cohort; 912 913 /* 914 * Propagate copied bits to the initial node. They'll be propagated 915 * back to the rest of the cohorts later. 916 */ 917 gn->type |= op & ~OP_OPMASK; 918 919 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 920 if (doing_depend) 921 ParseMark(cohort); 922 /* 923 * Make the cohort invisible as well to avoid duplicating it into 924 * other variables. True, parents of this target won't tend to do 925 * anything with their local variables, but better safe than 926 * sorry. (I think this is pointless now, since the relevant list 927 * traversals will no longer see this node anyway. -mycroft) 928 */ 929 cohort->type = op | OP_INVISIBLE; 930 (void)Lst_AtEnd(gn->cohorts, cohort); 931 cohort->centurion = gn; 932 gn->unmade_cohorts += 1; 933 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 934 gn->unmade_cohorts); 935 } else { 936 /* 937 * We don't want to nuke any previous flags (whatever they were) so we 938 * just OR the new operator into the old 939 */ 940 gn->type |= op; 941 } 942 943 return (0); 944 } 945 946 /*- 947 *--------------------------------------------------------------------- 948 * ParseDoSrc -- 949 * Given the name of a source, figure out if it is an attribute 950 * and apply it to the targets if it is. Else decide if there is 951 * some attribute which should be applied *to* the source because 952 * of some special target and apply it if so. Otherwise, make the 953 * source be a child of the targets in the list 'targets' 954 * 955 * Input: 956 * tOp operator (if any) from special targets 957 * src name of the source to handle 958 * 959 * Results: 960 * None 961 * 962 * Side Effects: 963 * Operator bits may be added to the list of targets or to the source. 964 * The targets may have a new source added to their lists of children. 965 *--------------------------------------------------------------------- 966 */ 967 static void 968 ParseDoSrc(int tOp, const char *src) 969 { 970 GNode *gn = NULL; 971 static int wait_number = 0; 972 char wait_src[16]; 973 974 if (*src == '.' && isupper ((unsigned char)src[1])) { 975 int keywd = ParseFindKeyword(src); 976 if (keywd != -1) { 977 int op = parseKeywords[keywd].op; 978 if (op != 0) { 979 Lst_ForEach(targets, ParseDoOp, &op); 980 return; 981 } 982 if (parseKeywords[keywd].spec == Wait) { 983 /* 984 * We add a .WAIT node in the dependency list. 985 * After any dynamic dependencies (and filename globbing) 986 * have happened, it is given a dependency on the each 987 * previous child back to and previous .WAIT node. 988 * The next child won't be scheduled until the .WAIT node 989 * is built. 990 * We give each .WAIT node a unique name (mainly for diag). 991 */ 992 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 993 gn = Targ_FindNode(wait_src, TARG_NOHASH); 994 if (doing_depend) 995 ParseMark(gn); 996 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 997 Lst_ForEach(targets, ParseLinkSrc, gn); 998 return; 999 } 1000 } 1001 } 1002 1003 switch (specType) { 1004 case Main: 1005 /* 1006 * If we have noted the existence of a .MAIN, it means we need 1007 * to add the sources of said target to the list of things 1008 * to create. The string 'src' is likely to be free, so we 1009 * must make a new copy of it. Note that this will only be 1010 * invoked if the user didn't specify a target on the command 1011 * line. This is to allow #ifmake's to succeed, or something... 1012 */ 1013 (void)Lst_AtEnd(create, bmake_strdup(src)); 1014 /* 1015 * Add the name to the .TARGETS variable as well, so the user can 1016 * employ that, if desired. 1017 */ 1018 Var_Append(".TARGETS", src, VAR_GLOBAL); 1019 return; 1020 1021 case Order: 1022 /* 1023 * Create proper predecessor/successor links between the previous 1024 * source and the current one. 1025 */ 1026 gn = Targ_FindNode(src, TARG_CREATE); 1027 if (doing_depend) 1028 ParseMark(gn); 1029 if (predecessor != NULL) { 1030 (void)Lst_AtEnd(predecessor->order_succ, gn); 1031 (void)Lst_AtEnd(gn->order_pred, predecessor); 1032 if (DEBUG(PARSE)) { 1033 fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n", 1034 predecessor->name, gn->name); 1035 Targ_PrintNode(predecessor, 0); 1036 Targ_PrintNode(gn, 0); 1037 } 1038 } 1039 /* 1040 * The current source now becomes the predecessor for the next one. 1041 */ 1042 predecessor = gn; 1043 break; 1044 1045 default: 1046 /* 1047 * If the source is not an attribute, we need to find/create 1048 * a node for it. After that we can apply any operator to it 1049 * from a special target or link it to its parents, as 1050 * appropriate. 1051 * 1052 * In the case of a source that was the object of a :: operator, 1053 * the attribute is applied to all of its instances (as kept in 1054 * the 'cohorts' list of the node) or all the cohorts are linked 1055 * to all the targets. 1056 */ 1057 1058 /* Find/create the 'src' node and attach to all targets */ 1059 gn = Targ_FindNode(src, TARG_CREATE); 1060 if (doing_depend) 1061 ParseMark(gn); 1062 if (tOp) { 1063 gn->type |= tOp; 1064 } else { 1065 Lst_ForEach(targets, ParseLinkSrc, gn); 1066 } 1067 break; 1068 } 1069 } 1070 1071 /*- 1072 *----------------------------------------------------------------------- 1073 * ParseFindMain -- 1074 * Find a real target in the list and set it to be the main one. 1075 * Called by ParseDoDependency when a main target hasn't been found 1076 * yet. 1077 * 1078 * Input: 1079 * gnp Node to examine 1080 * 1081 * Results: 1082 * 0 if main not found yet, 1 if it is. 1083 * 1084 * Side Effects: 1085 * mainNode is changed and Targ_SetMain is called. 1086 * 1087 *----------------------------------------------------------------------- 1088 */ 1089 static int 1090 ParseFindMain(void *gnp, void *dummy) 1091 { 1092 GNode *gn = (GNode *)gnp; 1093 if ((gn->type & OP_NOTARGET) == 0) { 1094 mainNode = gn; 1095 Targ_SetMain(gn); 1096 return (dummy ? 1 : 1); 1097 } else { 1098 return (dummy ? 0 : 0); 1099 } 1100 } 1101 1102 /*- 1103 *----------------------------------------------------------------------- 1104 * ParseAddDir -- 1105 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1106 * 1107 * Results: 1108 * === 0 1109 * 1110 * Side Effects: 1111 * See Dir_AddDir. 1112 * 1113 *----------------------------------------------------------------------- 1114 */ 1115 static int 1116 ParseAddDir(void *path, void *name) 1117 { 1118 (void)Dir_AddDir((Lst) path, (char *)name); 1119 return(0); 1120 } 1121 1122 /*- 1123 *----------------------------------------------------------------------- 1124 * ParseClearPath -- 1125 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1126 * 1127 * Results: 1128 * === 0 1129 * 1130 * Side Effects: 1131 * See Dir_ClearPath 1132 * 1133 *----------------------------------------------------------------------- 1134 */ 1135 static int 1136 ParseClearPath(void *path, void *dummy) 1137 { 1138 Dir_ClearPath((Lst) path); 1139 return(dummy ? 0 : 0); 1140 } 1141 1142 /*- 1143 *--------------------------------------------------------------------- 1144 * ParseDoDependency -- 1145 * Parse the dependency line in line. 1146 * 1147 * Input: 1148 * line the line to parse 1149 * 1150 * Results: 1151 * None 1152 * 1153 * Side Effects: 1154 * The nodes of the sources are linked as children to the nodes of the 1155 * targets. Some nodes may be created. 1156 * 1157 * We parse a dependency line by first extracting words from the line and 1158 * finding nodes in the list of all targets with that name. This is done 1159 * until a character is encountered which is an operator character. Currently 1160 * these are only ! and :. At this point the operator is parsed and the 1161 * pointer into the line advanced until the first source is encountered. 1162 * The parsed operator is applied to each node in the 'targets' list, 1163 * which is where the nodes found for the targets are kept, by means of 1164 * the ParseDoOp function. 1165 * The sources are read in much the same way as the targets were except 1166 * that now they are expanded using the wildcarding scheme of the C-Shell 1167 * and all instances of the resulting words in the list of all targets 1168 * are found. Each of the resulting nodes is then linked to each of the 1169 * targets as one of its children. 1170 * Certain targets are handled specially. These are the ones detailed 1171 * by the specType variable. 1172 * The storing of transformation rules is also taken care of here. 1173 * A target is recognized as a transformation rule by calling 1174 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1175 * from the suffix module via Suff_AddTransform rather than the standard 1176 * Targ_FindNode in the target module. 1177 *--------------------------------------------------------------------- 1178 */ 1179 static void 1180 ParseDoDependency(char *line) 1181 { 1182 char *cp; /* our current position */ 1183 GNode *gn = NULL; /* a general purpose temporary node */ 1184 int op; /* the operator on the line */ 1185 char savec; /* a place to save a character */ 1186 Lst paths; /* List of search paths to alter when parsing 1187 * a list of .PATH targets */ 1188 int tOp; /* operator from special target */ 1189 Lst sources; /* list of archive source names after 1190 * expansion */ 1191 Lst curTargs; /* list of target names to be found and added 1192 * to the targets list */ 1193 char *lstart = line; 1194 1195 if (DEBUG(PARSE)) 1196 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1197 tOp = 0; 1198 1199 specType = Not; 1200 paths = NULL; 1201 1202 curTargs = Lst_Init(FALSE); 1203 1204 do { 1205 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1206 !(isspace((unsigned char)*cp) || 1207 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1208 cp++) { 1209 if (*cp == '$') { 1210 /* 1211 * Must be a dynamic source (would have been expanded 1212 * otherwise), so call the Var module to parse the puppy 1213 * so we can safely advance beyond it...There should be 1214 * no errors in this, as they would have been discovered 1215 * in the initial Var_Subst and we wouldn't be here. 1216 */ 1217 int length; 1218 void *freeIt; 1219 char *result; 1220 1221 result = Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt); 1222 if (freeIt) 1223 free(freeIt); 1224 cp += length-1; 1225 } 1226 } 1227 1228 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1229 /* 1230 * Archives must be handled specially to make sure the OP_ARCHV 1231 * flag is set in their 'type' field, for one thing, and because 1232 * things like "archive(file1.o file2.o file3.o)" are permissible. 1233 * Arch_ParseArchive will set 'line' to be the first non-blank 1234 * after the archive-spec. It creates/finds nodes for the members 1235 * and places them on the given list, returning SUCCESS if all 1236 * went well and FAILURE if there was an error in the 1237 * specification. On error, line should remain untouched. 1238 */ 1239 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1240 Parse_Error(PARSE_FATAL, 1241 "Error in archive specification: \"%s\"", line); 1242 goto out; 1243 } else { 1244 continue; 1245 } 1246 } 1247 savec = *cp; 1248 1249 if (!*cp) { 1250 /* 1251 * Ending a dependency line without an operator is a Bozo 1252 * no-no. As a heuristic, this is also often triggered by 1253 * undetected conflicts from cvs/rcs merges. 1254 */ 1255 if ((strncmp(line, "<<<<<<", 6) == 0) || 1256 (strncmp(line, "======", 6) == 0) || 1257 (strncmp(line, ">>>>>>", 6) == 0)) 1258 Parse_Error(PARSE_FATAL, 1259 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1260 else 1261 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1262 : "Need an operator"); 1263 goto out; 1264 } 1265 *cp = '\0'; 1266 1267 /* 1268 * Have a word in line. See if it's a special target and set 1269 * specType to match it. 1270 */ 1271 if (*line == '.' && isupper ((unsigned char)line[1])) { 1272 /* 1273 * See if the target is a special target that must have it 1274 * or its sources handled specially. 1275 */ 1276 int keywd = ParseFindKeyword(line); 1277 if (keywd != -1) { 1278 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1279 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1280 goto out; 1281 } 1282 1283 specType = parseKeywords[keywd].spec; 1284 tOp = parseKeywords[keywd].op; 1285 1286 /* 1287 * Certain special targets have special semantics: 1288 * .PATH Have to set the dirSearchPath 1289 * variable too 1290 * .MAIN Its sources are only used if 1291 * nothing has been specified to 1292 * create. 1293 * .DEFAULT Need to create a node to hang 1294 * commands on, but we don't want 1295 * it in the graph, nor do we want 1296 * it to be the Main Target, so we 1297 * create it, set OP_NOTMAIN and 1298 * add it to the list, setting 1299 * DEFAULT to the new node for 1300 * later use. We claim the node is 1301 * A transformation rule to make 1302 * life easier later, when we'll 1303 * use Make_HandleUse to actually 1304 * apply the .DEFAULT commands. 1305 * .PHONY The list of targets 1306 * .NOPATH Don't search for file in the path 1307 * .STALE 1308 * .BEGIN 1309 * .END 1310 * .ERROR 1311 * .INTERRUPT Are not to be considered the 1312 * main target. 1313 * .NOTPARALLEL Make only one target at a time. 1314 * .SINGLESHELL Create a shell for each command. 1315 * .ORDER Must set initial predecessor to NULL 1316 */ 1317 switch (specType) { 1318 case ExPath: 1319 if (paths == NULL) { 1320 paths = Lst_Init(FALSE); 1321 } 1322 (void)Lst_AtEnd(paths, dirSearchPath); 1323 break; 1324 case Main: 1325 if (!Lst_IsEmpty(create)) { 1326 specType = Not; 1327 } 1328 break; 1329 case Begin: 1330 case End: 1331 case Stale: 1332 case dotError: 1333 case Interrupt: 1334 gn = Targ_FindNode(line, TARG_CREATE); 1335 if (doing_depend) 1336 ParseMark(gn); 1337 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1338 (void)Lst_AtEnd(targets, gn); 1339 break; 1340 case Default: 1341 gn = Targ_NewGN(".DEFAULT"); 1342 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1343 (void)Lst_AtEnd(targets, gn); 1344 DEFAULT = gn; 1345 break; 1346 case NotParallel: 1347 maxJobs = 1; 1348 break; 1349 case SingleShell: 1350 compatMake = TRUE; 1351 break; 1352 case Order: 1353 predecessor = NULL; 1354 break; 1355 default: 1356 break; 1357 } 1358 } else if (strncmp(line, ".PATH", 5) == 0) { 1359 /* 1360 * .PATH<suffix> has to be handled specially. 1361 * Call on the suffix module to give us a path to 1362 * modify. 1363 */ 1364 Lst path; 1365 1366 specType = ExPath; 1367 path = Suff_GetPath(&line[5]); 1368 if (path == NULL) { 1369 Parse_Error(PARSE_FATAL, 1370 "Suffix '%s' not defined (yet)", 1371 &line[5]); 1372 goto out; 1373 } else { 1374 if (paths == NULL) { 1375 paths = Lst_Init(FALSE); 1376 } 1377 (void)Lst_AtEnd(paths, path); 1378 } 1379 } 1380 } 1381 1382 /* 1383 * Have word in line. Get or create its node and stick it at 1384 * the end of the targets list 1385 */ 1386 if ((specType == Not) && (*line != '\0')) { 1387 if (Dir_HasWildcards(line)) { 1388 /* 1389 * Targets are to be sought only in the current directory, 1390 * so create an empty path for the thing. Note we need to 1391 * use Dir_Destroy in the destruction of the path as the 1392 * Dir module could have added a directory to the path... 1393 */ 1394 Lst emptyPath = Lst_Init(FALSE); 1395 1396 Dir_Expand(line, emptyPath, curTargs); 1397 1398 Lst_Destroy(emptyPath, Dir_Destroy); 1399 } else { 1400 /* 1401 * No wildcards, but we want to avoid code duplication, 1402 * so create a list with the word on it. 1403 */ 1404 (void)Lst_AtEnd(curTargs, line); 1405 } 1406 1407 while(!Lst_IsEmpty(curTargs)) { 1408 char *targName = (char *)Lst_DeQueue(curTargs); 1409 1410 if (!Suff_IsTransform (targName)) { 1411 gn = Targ_FindNode(targName, TARG_CREATE); 1412 } else { 1413 gn = Suff_AddTransform(targName); 1414 } 1415 if (doing_depend) 1416 ParseMark(gn); 1417 1418 (void)Lst_AtEnd(targets, gn); 1419 } 1420 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1421 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1422 } 1423 1424 *cp = savec; 1425 /* 1426 * If it is a special type and not .PATH, it's the only target we 1427 * allow on this line... 1428 */ 1429 if (specType != Not && specType != ExPath) { 1430 Boolean warning = FALSE; 1431 1432 while (*cp && (ParseIsEscaped(lstart, cp) || 1433 ((*cp != '!') && (*cp != ':')))) { 1434 if (ParseIsEscaped(lstart, cp) || 1435 (*cp != ' ' && *cp != '\t')) { 1436 warning = TRUE; 1437 } 1438 cp++; 1439 } 1440 if (warning) { 1441 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1442 } 1443 } else { 1444 while (*cp && isspace ((unsigned char)*cp)) { 1445 cp++; 1446 } 1447 } 1448 line = cp; 1449 } while (*line && (ParseIsEscaped(lstart, line) || 1450 ((*line != '!') && (*line != ':')))); 1451 1452 /* 1453 * Don't need the list of target names anymore... 1454 */ 1455 Lst_Destroy(curTargs, NULL); 1456 curTargs = NULL; 1457 1458 if (!Lst_IsEmpty(targets)) { 1459 switch(specType) { 1460 default: 1461 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1462 break; 1463 case Default: 1464 case Stale: 1465 case Begin: 1466 case End: 1467 case dotError: 1468 case Interrupt: 1469 /* 1470 * These four create nodes on which to hang commands, so 1471 * targets shouldn't be empty... 1472 */ 1473 case Not: 1474 /* 1475 * Nothing special here -- targets can be empty if it wants. 1476 */ 1477 break; 1478 } 1479 } 1480 1481 /* 1482 * Have now parsed all the target names. Must parse the operator next. The 1483 * result is left in op . 1484 */ 1485 if (*cp == '!') { 1486 op = OP_FORCE; 1487 } else if (*cp == ':') { 1488 if (cp[1] == ':') { 1489 op = OP_DOUBLEDEP; 1490 cp++; 1491 } else { 1492 op = OP_DEPENDS; 1493 } 1494 } else { 1495 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1496 : "Missing dependency operator"); 1497 goto out; 1498 } 1499 1500 cp++; /* Advance beyond operator */ 1501 1502 Lst_ForEach(targets, ParseDoOp, &op); 1503 1504 /* 1505 * Get to the first source 1506 */ 1507 while (*cp && isspace ((unsigned char)*cp)) { 1508 cp++; 1509 } 1510 line = cp; 1511 1512 /* 1513 * Several special targets take different actions if present with no 1514 * sources: 1515 * a .SUFFIXES line with no sources clears out all old suffixes 1516 * a .PRECIOUS line makes all targets precious 1517 * a .IGNORE line ignores errors for all targets 1518 * a .SILENT line creates silence when making all targets 1519 * a .PATH removes all directories from the search path(s). 1520 */ 1521 if (!*line) { 1522 switch (specType) { 1523 case Suffixes: 1524 Suff_ClearSuffixes(); 1525 break; 1526 case Precious: 1527 allPrecious = TRUE; 1528 break; 1529 case Ignore: 1530 ignoreErrors = TRUE; 1531 break; 1532 case Silent: 1533 beSilent = TRUE; 1534 break; 1535 case ExPath: 1536 Lst_ForEach(paths, ParseClearPath, NULL); 1537 Dir_SetPATH(); 1538 break; 1539 #ifdef POSIX 1540 case Posix: 1541 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1542 break; 1543 #endif 1544 default: 1545 break; 1546 } 1547 } else if (specType == MFlags) { 1548 /* 1549 * Call on functions in main.c to deal with these arguments and 1550 * set the initial character to a null-character so the loop to 1551 * get sources won't get anything 1552 */ 1553 Main_ParseArgLine(line); 1554 *line = '\0'; 1555 } else if (specType == ExShell) { 1556 if (Job_ParseShell(line) != SUCCESS) { 1557 Parse_Error(PARSE_FATAL, "improper shell specification"); 1558 goto out; 1559 } 1560 *line = '\0'; 1561 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1562 *line = '\0'; 1563 } 1564 1565 /* 1566 * NOW GO FOR THE SOURCES 1567 */ 1568 if ((specType == Suffixes) || (specType == ExPath) || 1569 (specType == Includes) || (specType == Libs) || 1570 (specType == Null) || (specType == ExObjdir)) 1571 { 1572 while (*line) { 1573 /* 1574 * If the target was one that doesn't take files as its sources 1575 * but takes something like suffixes, we take each 1576 * space-separated word on the line as a something and deal 1577 * with it accordingly. 1578 * 1579 * If the target was .SUFFIXES, we take each source as a 1580 * suffix and add it to the list of suffixes maintained by the 1581 * Suff module. 1582 * 1583 * If the target was a .PATH, we add the source as a directory 1584 * to search on the search path. 1585 * 1586 * If it was .INCLUDES, the source is taken to be the suffix of 1587 * files which will be #included and whose search path should 1588 * be present in the .INCLUDES variable. 1589 * 1590 * If it was .LIBS, the source is taken to be the suffix of 1591 * files which are considered libraries and whose search path 1592 * should be present in the .LIBS variable. 1593 * 1594 * If it was .NULL, the source is the suffix to use when a file 1595 * has no valid suffix. 1596 * 1597 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1598 * and will cause make to do a new chdir to that path. 1599 */ 1600 while (*cp && !isspace ((unsigned char)*cp)) { 1601 cp++; 1602 } 1603 savec = *cp; 1604 *cp = '\0'; 1605 switch (specType) { 1606 case Suffixes: 1607 Suff_AddSuffix(line, &mainNode); 1608 break; 1609 case ExPath: 1610 Lst_ForEach(paths, ParseAddDir, line); 1611 break; 1612 case Includes: 1613 Suff_AddInclude(line); 1614 break; 1615 case Libs: 1616 Suff_AddLib(line); 1617 break; 1618 case Null: 1619 Suff_SetNull(line); 1620 break; 1621 case ExObjdir: 1622 Main_SetObjdir(line); 1623 break; 1624 default: 1625 break; 1626 } 1627 *cp = savec; 1628 if (savec != '\0') { 1629 cp++; 1630 } 1631 while (*cp && isspace ((unsigned char)*cp)) { 1632 cp++; 1633 } 1634 line = cp; 1635 } 1636 if (paths) { 1637 Lst_Destroy(paths, NULL); 1638 } 1639 if (specType == ExPath) 1640 Dir_SetPATH(); 1641 } else { 1642 while (*line) { 1643 /* 1644 * The targets take real sources, so we must beware of archive 1645 * specifications (i.e. things with left parentheses in them) 1646 * and handle them accordingly. 1647 */ 1648 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1649 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1650 /* 1651 * Only stop for a left parenthesis if it isn't at the 1652 * start of a word (that'll be for variable changes 1653 * later) and isn't preceded by a dollar sign (a dynamic 1654 * source). 1655 */ 1656 break; 1657 } 1658 } 1659 1660 if (*cp == LPAREN) { 1661 sources = Lst_Init(FALSE); 1662 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1663 Parse_Error(PARSE_FATAL, 1664 "Error in source archive spec \"%s\"", line); 1665 goto out; 1666 } 1667 1668 while (!Lst_IsEmpty (sources)) { 1669 gn = (GNode *)Lst_DeQueue(sources); 1670 ParseDoSrc(tOp, gn->name); 1671 } 1672 Lst_Destroy(sources, NULL); 1673 cp = line; 1674 } else { 1675 if (*cp) { 1676 *cp = '\0'; 1677 cp += 1; 1678 } 1679 1680 ParseDoSrc(tOp, line); 1681 } 1682 while (*cp && isspace ((unsigned char)*cp)) { 1683 cp++; 1684 } 1685 line = cp; 1686 } 1687 } 1688 1689 if (mainNode == NULL) { 1690 /* 1691 * If we have yet to decide on a main target to make, in the 1692 * absence of any user input, we want the first target on 1693 * the first dependency line that is actually a real target 1694 * (i.e. isn't a .USE or .EXEC rule) to be made. 1695 */ 1696 Lst_ForEach(targets, ParseFindMain, NULL); 1697 } 1698 1699 out: 1700 if (curTargs) 1701 Lst_Destroy(curTargs, NULL); 1702 } 1703 1704 /*- 1705 *--------------------------------------------------------------------- 1706 * Parse_IsVar -- 1707 * Return TRUE if the passed line is a variable assignment. A variable 1708 * assignment consists of a single word followed by optional whitespace 1709 * followed by either a += or an = operator. 1710 * This function is used both by the Parse_File function and main when 1711 * parsing the command-line arguments. 1712 * 1713 * Input: 1714 * line the line to check 1715 * 1716 * Results: 1717 * TRUE if it is. FALSE if it ain't 1718 * 1719 * Side Effects: 1720 * none 1721 *--------------------------------------------------------------------- 1722 */ 1723 Boolean 1724 Parse_IsVar(char *line) 1725 { 1726 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1727 char ch; 1728 int level = 0; 1729 #define ISEQOPERATOR(c) \ 1730 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1731 1732 /* 1733 * Skip to variable name 1734 */ 1735 for (;(*line == ' ') || (*line == '\t'); line++) 1736 continue; 1737 1738 /* Scan for one of the assignment operators outside a variable expansion */ 1739 while ((ch = *line++) != 0) { 1740 if (ch == '(' || ch == '{') { 1741 level++; 1742 continue; 1743 } 1744 if (ch == ')' || ch == '}') { 1745 level--; 1746 continue; 1747 } 1748 if (level != 0) 1749 continue; 1750 while (ch == ' ' || ch == '\t') { 1751 ch = *line++; 1752 wasSpace = TRUE; 1753 } 1754 if (ch == '=') 1755 return TRUE; 1756 if (*line == '=' && ISEQOPERATOR(ch)) 1757 return TRUE; 1758 if (wasSpace) 1759 return FALSE; 1760 } 1761 1762 return FALSE; 1763 } 1764 1765 /*- 1766 *--------------------------------------------------------------------- 1767 * Parse_DoVar -- 1768 * Take the variable assignment in the passed line and do it in the 1769 * global context. 1770 * 1771 * Note: There is a lexical ambiguity with assignment modifier characters 1772 * in variable names. This routine interprets the character before the = 1773 * as a modifier. Therefore, an assignment like 1774 * C++=/usr/bin/CC 1775 * is interpreted as "C+ +=" instead of "C++ =". 1776 * 1777 * Input: 1778 * line a line guaranteed to be a variable assignment. 1779 * This reduces error checks 1780 * ctxt Context in which to do the assignment 1781 * 1782 * Results: 1783 * none 1784 * 1785 * Side Effects: 1786 * the variable structure of the given variable name is altered in the 1787 * global context. 1788 *--------------------------------------------------------------------- 1789 */ 1790 void 1791 Parse_DoVar(char *line, GNode *ctxt) 1792 { 1793 char *cp; /* pointer into line */ 1794 enum { 1795 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1796 } type; /* Type of assignment */ 1797 char *opc; /* ptr to operator character to 1798 * null-terminate the variable name */ 1799 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1800 * i.e. if any variable expansion was 1801 * performed */ 1802 int depth; 1803 1804 /* 1805 * Skip to variable name 1806 */ 1807 while ((*line == ' ') || (*line == '\t')) { 1808 line++; 1809 } 1810 1811 /* 1812 * Skip to operator character, nulling out whitespace as we go 1813 * XXX Rather than counting () and {} we should look for $ and 1814 * then expand the variable. 1815 */ 1816 for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) { 1817 if (*cp == '(' || *cp == '{') { 1818 depth++; 1819 continue; 1820 } 1821 if (*cp == ')' || *cp == '}') { 1822 depth--; 1823 continue; 1824 } 1825 if (depth == 0 && isspace ((unsigned char)*cp)) { 1826 *cp = '\0'; 1827 } 1828 } 1829 opc = cp-1; /* operator is the previous character */ 1830 *cp++ = '\0'; /* nuke the = */ 1831 1832 /* 1833 * Check operator type 1834 */ 1835 switch (*opc) { 1836 case '+': 1837 type = VAR_APPEND; 1838 *opc = '\0'; 1839 break; 1840 1841 case '?': 1842 /* 1843 * If the variable already has a value, we don't do anything. 1844 */ 1845 *opc = '\0'; 1846 if (Var_Exists(line, ctxt)) { 1847 return; 1848 } else { 1849 type = VAR_NORMAL; 1850 } 1851 break; 1852 1853 case ':': 1854 type = VAR_SUBST; 1855 *opc = '\0'; 1856 break; 1857 1858 case '!': 1859 type = VAR_SHELL; 1860 *opc = '\0'; 1861 break; 1862 1863 default: 1864 #ifdef SUNSHCMD 1865 while (opc > line && *opc != ':') 1866 opc--; 1867 1868 if (strncmp(opc, ":sh", 3) == 0) { 1869 type = VAR_SHELL; 1870 *opc = '\0'; 1871 break; 1872 } 1873 #endif 1874 type = VAR_NORMAL; 1875 break; 1876 } 1877 1878 while (isspace ((unsigned char)*cp)) { 1879 cp++; 1880 } 1881 1882 if (type == VAR_APPEND) { 1883 Var_Append(line, cp, ctxt); 1884 } else if (type == VAR_SUBST) { 1885 /* 1886 * Allow variables in the old value to be undefined, but leave their 1887 * invocation alone -- this is done by forcing oldVars to be false. 1888 * XXX: This can cause recursive variables, but that's not hard to do, 1889 * and this allows someone to do something like 1890 * 1891 * CFLAGS = $(.INCLUDES) 1892 * CFLAGS := -I.. $(CFLAGS) 1893 * 1894 * And not get an error. 1895 */ 1896 Boolean oldOldVars = oldVars; 1897 1898 oldVars = FALSE; 1899 1900 /* 1901 * make sure that we set the variable the first time to nothing 1902 * so that it gets substituted! 1903 */ 1904 if (!Var_Exists(line, ctxt)) 1905 Var_Set(line, "", ctxt, 0); 1906 1907 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1908 oldVars = oldOldVars; 1909 freeCp = TRUE; 1910 1911 Var_Set(line, cp, ctxt, 0); 1912 } else if (type == VAR_SHELL) { 1913 char *res; 1914 const char *error; 1915 1916 if (strchr(cp, '$') != NULL) { 1917 /* 1918 * There's a dollar sign in the command, so perform variable 1919 * expansion on the whole thing. The resulting string will need 1920 * freeing when we're done, so set freeCmd to TRUE. 1921 */ 1922 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1923 freeCp = TRUE; 1924 } 1925 1926 res = Cmd_Exec(cp, &error); 1927 Var_Set(line, res, ctxt, 0); 1928 free(res); 1929 1930 if (error) 1931 Parse_Error(PARSE_WARNING, error, cp); 1932 } else { 1933 /* 1934 * Normal assignment -- just do it. 1935 */ 1936 Var_Set(line, cp, ctxt, 0); 1937 } 1938 if (strcmp(line, MAKEOVERRIDES) == 0) 1939 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1940 else if (strcmp(line, ".CURDIR") == 0) { 1941 /* 1942 * Somone is being (too?) clever... 1943 * Let's pretend they know what they are doing and 1944 * re-initialize the 'cur' Path. 1945 */ 1946 Dir_InitCur(cp); 1947 Dir_SetPATH(); 1948 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 1949 Job_SetPrefix(); 1950 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 1951 Var_Export(cp, 0); 1952 } 1953 if (freeCp) 1954 free(cp); 1955 } 1956 1957 1958 /*- 1959 * ParseAddCmd -- 1960 * Lst_ForEach function to add a command line to all targets 1961 * 1962 * Input: 1963 * gnp the node to which the command is to be added 1964 * cmd the command to add 1965 * 1966 * Results: 1967 * Always 0 1968 * 1969 * Side Effects: 1970 * A new element is added to the commands list of the node. 1971 */ 1972 static int 1973 ParseAddCmd(void *gnp, void *cmd) 1974 { 1975 GNode *gn = (GNode *)gnp; 1976 1977 /* Add to last (ie current) cohort for :: targets */ 1978 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 1979 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 1980 1981 /* if target already supplied, ignore commands */ 1982 if (!(gn->type & OP_HAS_COMMANDS)) { 1983 (void)Lst_AtEnd(gn->commands, cmd); 1984 ParseMark(gn); 1985 } else { 1986 #ifdef notyet 1987 /* XXX: We cannot do this until we fix the tree */ 1988 (void)Lst_AtEnd(gn->commands, cmd); 1989 Parse_Error(PARSE_WARNING, 1990 "overriding commands for target \"%s\"; " 1991 "previous commands defined at %s: %d ignored", 1992 gn->name, gn->fname, gn->lineno); 1993 #else 1994 Parse_Error(PARSE_WARNING, 1995 "duplicate script for target \"%s\" ignored", 1996 gn->name); 1997 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 1998 "using previous script for \"%s\" defined here", 1999 gn->name); 2000 #endif 2001 } 2002 return(0); 2003 } 2004 2005 /*- 2006 *----------------------------------------------------------------------- 2007 * ParseHasCommands -- 2008 * Callback procedure for Parse_File when destroying the list of 2009 * targets on the last dependency line. Marks a target as already 2010 * having commands if it does, to keep from having shell commands 2011 * on multiple dependency lines. 2012 * 2013 * Input: 2014 * gnp Node to examine 2015 * 2016 * Results: 2017 * None 2018 * 2019 * Side Effects: 2020 * OP_HAS_COMMANDS may be set for the target. 2021 * 2022 *----------------------------------------------------------------------- 2023 */ 2024 static void 2025 ParseHasCommands(void *gnp) 2026 { 2027 GNode *gn = (GNode *)gnp; 2028 if (!Lst_IsEmpty(gn->commands)) { 2029 gn->type |= OP_HAS_COMMANDS; 2030 } 2031 } 2032 2033 /*- 2034 *----------------------------------------------------------------------- 2035 * Parse_AddIncludeDir -- 2036 * Add a directory to the path searched for included makefiles 2037 * bracketed by double-quotes. Used by functions in main.c 2038 * 2039 * Input: 2040 * dir The name of the directory to add 2041 * 2042 * Results: 2043 * None. 2044 * 2045 * Side Effects: 2046 * The directory is appended to the list. 2047 * 2048 *----------------------------------------------------------------------- 2049 */ 2050 void 2051 Parse_AddIncludeDir(char *dir) 2052 { 2053 (void)Dir_AddDir(parseIncPath, dir); 2054 } 2055 2056 /*- 2057 *--------------------------------------------------------------------- 2058 * ParseDoInclude -- 2059 * Push to another file. 2060 * 2061 * The input is the line minus the `.'. A file spec is a string 2062 * enclosed in <> or "". The former is looked for only in sysIncPath. 2063 * The latter in . and the directories specified by -I command line 2064 * options 2065 * 2066 * Results: 2067 * None 2068 * 2069 * Side Effects: 2070 * A structure is added to the includes Lst and readProc, lineno, 2071 * fname and curFILE are altered for the new file 2072 *--------------------------------------------------------------------- 2073 */ 2074 2075 static void 2076 Parse_include_file(char *file, Boolean isSystem, int silent) 2077 { 2078 struct loadedfile *lf; 2079 char *fullname; /* full pathname of file */ 2080 char *newName; 2081 char *prefEnd, *incdir; 2082 int fd; 2083 int i; 2084 2085 /* 2086 * Now we know the file's name and its search path, we attempt to 2087 * find the durn thing. A return of NULL indicates the file don't 2088 * exist. 2089 */ 2090 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2091 2092 if (fullname == NULL && !isSystem) { 2093 /* 2094 * Include files contained in double-quotes are first searched for 2095 * relative to the including file's location. We don't want to 2096 * cd there, of course, so we just tack on the old file's 2097 * leading path components and call Dir_FindFile to see if 2098 * we can locate the beast. 2099 */ 2100 2101 incdir = bmake_strdup(curFile->fname); 2102 prefEnd = strrchr(incdir, '/'); 2103 if (prefEnd != NULL) { 2104 *prefEnd = '\0'; 2105 /* Now do lexical processing of leading "../" on the filename */ 2106 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2107 prefEnd = strrchr(incdir + 1, '/'); 2108 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2109 break; 2110 *prefEnd = '\0'; 2111 } 2112 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2113 fullname = Dir_FindFile(newName, parseIncPath); 2114 if (fullname == NULL) 2115 fullname = Dir_FindFile(newName, dirSearchPath); 2116 free(newName); 2117 } 2118 free(incdir); 2119 2120 if (fullname == NULL) { 2121 /* 2122 * Makefile wasn't found in same directory as included makefile. 2123 * Search for it first on the -I search path, 2124 * then on the .PATH search path, if not found in a -I directory. 2125 * If we have a suffix specific path we should use that. 2126 */ 2127 char *suff; 2128 Lst suffPath = NULL; 2129 2130 if ((suff = strrchr(file, '.'))) { 2131 suffPath = Suff_GetPath(suff); 2132 if (suffPath != NULL) { 2133 fullname = Dir_FindFile(file, suffPath); 2134 } 2135 } 2136 if (fullname == NULL) { 2137 fullname = Dir_FindFile(file, parseIncPath); 2138 if (fullname == NULL) { 2139 fullname = Dir_FindFile(file, dirSearchPath); 2140 } 2141 } 2142 } 2143 } 2144 2145 /* Looking for a system file or file still not found */ 2146 if (fullname == NULL) { 2147 /* 2148 * Look for it on the system path 2149 */ 2150 fullname = Dir_FindFile(file, 2151 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2152 } 2153 2154 if (fullname == NULL) { 2155 if (!silent) 2156 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2157 return; 2158 } 2159 2160 /* Actually open the file... */ 2161 fd = open(fullname, O_RDONLY); 2162 if (fd == -1) { 2163 if (!silent) 2164 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2165 free(fullname); 2166 return; 2167 } 2168 2169 /* load it */ 2170 lf = loadfile(fullname, fd); 2171 2172 /* Start reading from this file next */ 2173 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2174 curFile->lf = lf; 2175 } 2176 2177 static void 2178 ParseDoInclude(char *line) 2179 { 2180 char endc; /* the character which ends the file spec */ 2181 char *cp; /* current position in file spec */ 2182 int silent = (*line != 'i') ? 1 : 0; 2183 char *file = &line[7 + silent]; 2184 2185 /* Skip to delimiter character so we know where to look */ 2186 while (*file == ' ' || *file == '\t') 2187 file++; 2188 2189 if (*file != '"' && *file != '<') { 2190 Parse_Error(PARSE_FATAL, 2191 ".include filename must be delimited by '\"' or '<'"); 2192 return; 2193 } 2194 2195 /* 2196 * Set the search path on which to find the include file based on the 2197 * characters which bracket its name. Angle-brackets imply it's 2198 * a system Makefile while double-quotes imply it's a user makefile 2199 */ 2200 if (*file == '<') { 2201 endc = '>'; 2202 } else { 2203 endc = '"'; 2204 } 2205 2206 /* Skip to matching delimiter */ 2207 for (cp = ++file; *cp && *cp != endc; cp++) 2208 continue; 2209 2210 if (*cp != endc) { 2211 Parse_Error(PARSE_FATAL, 2212 "Unclosed %cinclude filename. '%c' expected", 2213 '.', endc); 2214 return; 2215 } 2216 *cp = '\0'; 2217 2218 /* 2219 * Substitute for any variables in the file name before trying to 2220 * find the thing. 2221 */ 2222 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2223 2224 Parse_include_file(file, endc == '>', silent); 2225 free(file); 2226 } 2227 2228 2229 /*- 2230 *--------------------------------------------------------------------- 2231 * ParseSetParseFile -- 2232 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2233 * basename of the given filename 2234 * 2235 * Results: 2236 * None 2237 * 2238 * Side Effects: 2239 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2240 * dirname and basename of the given filename. 2241 *--------------------------------------------------------------------- 2242 */ 2243 static void 2244 ParseSetParseFile(const char *filename) 2245 { 2246 char *slash, *dirname; 2247 const char *pd, *pf; 2248 int len; 2249 2250 slash = strrchr(filename, '/'); 2251 if (slash == NULL) { 2252 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2253 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2254 dirname= NULL; 2255 } else { 2256 len = slash - filename; 2257 dirname = bmake_malloc(len + 1); 2258 memcpy(dirname, filename, len); 2259 dirname[len] = '\0'; 2260 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2261 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2262 } 2263 if (DEBUG(PARSE)) 2264 fprintf(debug_file, "ParseSetParseFile: ${.PARSEDIR} = `%s' " 2265 "${.PARSEFILE} = `%s'\n", pd, pf); 2266 free(dirname); 2267 } 2268 2269 /* 2270 * Track the makefiles we read - so makefiles can 2271 * set dependencies on them. 2272 * Avoid adding anything more than once. 2273 */ 2274 2275 static void 2276 ParseTrackInput(const char *name) 2277 { 2278 char *old; 2279 char *fp = NULL; 2280 size_t name_len = strlen(name); 2281 2282 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2283 if (old) { 2284 /* does it contain name? */ 2285 for (; old != NULL; old = strchr(old, ' ')) { 2286 if (*old == ' ') 2287 old++; 2288 if (memcmp(old, name, name_len) == 0 2289 && (old[name_len] == 0 || old[name_len] == ' ')) 2290 goto cleanup; 2291 } 2292 } 2293 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2294 cleanup: 2295 if (fp) { 2296 free(fp); 2297 } 2298 } 2299 2300 2301 /*- 2302 *--------------------------------------------------------------------- 2303 * Parse_setInput -- 2304 * Start Parsing from the given source 2305 * 2306 * Results: 2307 * None 2308 * 2309 * Side Effects: 2310 * A structure is added to the includes Lst and readProc, lineno, 2311 * fname and curFile are altered for the new file 2312 *--------------------------------------------------------------------- 2313 */ 2314 void 2315 Parse_SetInput(const char *name, int line, int fd, 2316 char *(*nextbuf)(void *, size_t *), void *arg) 2317 { 2318 char *buf; 2319 size_t len; 2320 2321 if (name == NULL) 2322 name = curFile->fname; 2323 else 2324 ParseTrackInput(name); 2325 2326 if (DEBUG(PARSE)) 2327 fprintf(debug_file, "Parse_SetInput: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2328 name, line, fd, nextbuf, arg); 2329 2330 if (fd == -1 && nextbuf == NULL) 2331 /* sanity */ 2332 return; 2333 2334 if (curFile != NULL) 2335 /* Save exiting file info */ 2336 Lst_AtFront(includes, curFile); 2337 2338 /* Allocate and fill in new structure */ 2339 curFile = bmake_malloc(sizeof *curFile); 2340 2341 /* 2342 * Once the previous state has been saved, we can get down to reading 2343 * the new file. We set up the name of the file to be the absolute 2344 * name of the include file so error messages refer to the right 2345 * place. 2346 */ 2347 curFile->fname = name; 2348 curFile->lineno = line; 2349 curFile->first_lineno = line; 2350 curFile->nextbuf = nextbuf; 2351 curFile->nextbuf_arg = arg; 2352 curFile->lf = NULL; 2353 2354 assert(nextbuf != NULL); 2355 2356 /* Get first block of input data */ 2357 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2358 if (buf == NULL) { 2359 /* Was all a waste of time ... */ 2360 free(curFile); 2361 return; 2362 } 2363 curFile->P_str = buf; 2364 curFile->P_ptr = buf; 2365 curFile->P_end = buf+len; 2366 2367 curFile->cond_depth = Cond_save_depth(); 2368 ParseSetParseFile(name); 2369 } 2370 2371 #ifdef SYSVINCLUDE 2372 /*- 2373 *--------------------------------------------------------------------- 2374 * ParseTraditionalInclude -- 2375 * Push to another file. 2376 * 2377 * The input is the current line. The file name(s) are 2378 * following the "include". 2379 * 2380 * Results: 2381 * None 2382 * 2383 * Side Effects: 2384 * A structure is added to the includes Lst and readProc, lineno, 2385 * fname and curFILE are altered for the new file 2386 *--------------------------------------------------------------------- 2387 */ 2388 static void 2389 ParseTraditionalInclude(char *line) 2390 { 2391 char *cp; /* current position in file spec */ 2392 int done = 0; 2393 int silent = (line[0] != 'i') ? 1 : 0; 2394 char *file = &line[silent + 7]; 2395 char *all_files; 2396 2397 if (DEBUG(PARSE)) { 2398 fprintf(debug_file, "ParseTraditionalInclude: %s\n", file); 2399 } 2400 2401 /* 2402 * Skip over whitespace 2403 */ 2404 while (isspace((unsigned char)*file)) 2405 file++; 2406 2407 /* 2408 * Substitute for any variables in the file name before trying to 2409 * find the thing. 2410 */ 2411 all_files = Var_Subst(NULL, file, VAR_CMD, FALSE); 2412 2413 if (*file == '\0') { 2414 Parse_Error(PARSE_FATAL, 2415 "Filename missing from \"include\""); 2416 return; 2417 } 2418 2419 for (file = all_files; !done; file = cp + 1) { 2420 /* Skip to end of line or next whitespace */ 2421 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2422 continue; 2423 2424 if (*cp) 2425 *cp = '\0'; 2426 else 2427 done = 1; 2428 2429 Parse_include_file(file, FALSE, silent); 2430 } 2431 free(all_files); 2432 } 2433 #endif 2434 2435 #ifdef GMAKEEXPORT 2436 /*- 2437 *--------------------------------------------------------------------- 2438 * ParseGmakeExport -- 2439 * Parse export <variable>=<value> 2440 * 2441 * And set the environment with it. 2442 * 2443 * Results: 2444 * None 2445 * 2446 * Side Effects: 2447 * None 2448 *--------------------------------------------------------------------- 2449 */ 2450 static void 2451 ParseGmakeExport(char *line) 2452 { 2453 char *variable = &line[6]; 2454 char *value; 2455 2456 if (DEBUG(PARSE)) { 2457 fprintf(debug_file, "ParseGmakeExport: %s\n", variable); 2458 } 2459 2460 /* 2461 * Skip over whitespace 2462 */ 2463 while (isspace((unsigned char)*variable)) 2464 variable++; 2465 2466 for (value = variable; *value && *value != '='; value++) 2467 continue; 2468 2469 if (*value != '=') { 2470 Parse_Error(PARSE_FATAL, 2471 "Variable/Value missing from \"export\""); 2472 return; 2473 } 2474 *value++ = '\0'; /* terminate variable */ 2475 2476 /* 2477 * Expand the value before putting it in the environment. 2478 */ 2479 value = Var_Subst(NULL, value, VAR_CMD, FALSE); 2480 setenv(variable, value, 1); 2481 } 2482 #endif 2483 2484 /*- 2485 *--------------------------------------------------------------------- 2486 * ParseEOF -- 2487 * Called when EOF is reached in the current file. If we were reading 2488 * an include file, the includes stack is popped and things set up 2489 * to go back to reading the previous file at the previous location. 2490 * 2491 * Results: 2492 * CONTINUE if there's more to do. DONE if not. 2493 * 2494 * Side Effects: 2495 * The old curFILE, is closed. The includes list is shortened. 2496 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2497 *--------------------------------------------------------------------- 2498 */ 2499 static int 2500 ParseEOF(void) 2501 { 2502 char *ptr; 2503 size_t len; 2504 2505 assert(curFile->nextbuf != NULL); 2506 2507 /* get next input buffer, if any */ 2508 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2509 curFile->P_ptr = ptr; 2510 curFile->P_str = ptr; 2511 curFile->P_end = ptr + len; 2512 curFile->lineno = curFile->first_lineno; 2513 if (ptr != NULL) { 2514 /* Iterate again */ 2515 return CONTINUE; 2516 } 2517 2518 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2519 Cond_restore_depth(curFile->cond_depth); 2520 2521 if (curFile->lf != NULL) { 2522 loadedfile_destroy(curFile->lf); 2523 curFile->lf = NULL; 2524 } 2525 2526 /* Dispose of curFile info */ 2527 /* Leak curFile->fname because all the gnodes have pointers to it */ 2528 free(curFile->P_str); 2529 free(curFile); 2530 2531 curFile = Lst_DeQueue(includes); 2532 2533 if (curFile == NULL) { 2534 /* We've run out of input */ 2535 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2536 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2537 return DONE; 2538 } 2539 2540 if (DEBUG(PARSE)) 2541 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2542 curFile->fname, curFile->lineno); 2543 2544 /* Restore the PARSEDIR/PARSEFILE variables */ 2545 ParseSetParseFile(curFile->fname); 2546 return (CONTINUE); 2547 } 2548 2549 #define PARSE_RAW 1 2550 #define PARSE_SKIP 2 2551 2552 static char * 2553 ParseGetLine(int flags, int *length) 2554 { 2555 IFile *cf = curFile; 2556 char *ptr; 2557 char ch; 2558 char *line; 2559 char *line_end; 2560 char *escaped; 2561 char *comment; 2562 char *tp; 2563 2564 /* Loop through blank lines and comment lines */ 2565 for (;;) { 2566 cf->lineno++; 2567 line = cf->P_ptr; 2568 ptr = line; 2569 line_end = line; 2570 escaped = NULL; 2571 comment = NULL; 2572 for (;;) { 2573 if (cf->P_end != NULL && ptr == cf->P_end) { 2574 /* end of buffer */ 2575 ch = 0; 2576 break; 2577 } 2578 ch = *ptr; 2579 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2580 if (cf->P_end == NULL) 2581 /* End of string (aka for loop) data */ 2582 break; 2583 if (cf->nextbuf != NULL) { 2584 /* 2585 * End of this buffer; return EOF and outer logic 2586 * will get the next one. (eww) 2587 */ 2588 break; 2589 } 2590 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2591 return NULL; 2592 } 2593 2594 if (ch == '\\') { 2595 /* Don't treat next character as special, remember first one */ 2596 if (escaped == NULL) 2597 escaped = ptr; 2598 if (ptr[1] == '\n') 2599 cf->lineno++; 2600 ptr += 2; 2601 line_end = ptr; 2602 continue; 2603 } 2604 if (ch == '#' && comment == NULL) { 2605 /* Remember first '#' for comment stripping */ 2606 /* Unless previous char was '[', as in modifier :[#] */ 2607 if (!(ptr > line && ptr[-1] == '[')) 2608 comment = line_end; 2609 } 2610 ptr++; 2611 if (ch == '\n') 2612 break; 2613 if (!isspace((unsigned char)ch)) 2614 /* We are not interested in trailing whitespace */ 2615 line_end = ptr; 2616 } 2617 2618 /* Save next 'to be processed' location */ 2619 cf->P_ptr = ptr; 2620 2621 /* Check we have a non-comment, non-blank line */ 2622 if (line_end == line || comment == line) { 2623 if (ch == 0) 2624 /* At end of file */ 2625 return NULL; 2626 /* Parse another line */ 2627 continue; 2628 } 2629 2630 /* We now have a line of data */ 2631 *line_end = 0; 2632 2633 if (flags & PARSE_RAW) { 2634 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2635 *length = line_end - line; 2636 return line; 2637 } 2638 2639 if (flags & PARSE_SKIP) { 2640 /* Completely ignore non-directives */ 2641 if (line[0] != '.') 2642 continue; 2643 /* We could do more of the .else/.elif/.endif checks here */ 2644 } 2645 break; 2646 } 2647 2648 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2649 if (comment != NULL && line[0] != '\t') { 2650 line_end = comment; 2651 *line_end = 0; 2652 } 2653 2654 /* If we didn't see a '\\' then the in-situ data is fine */ 2655 if (escaped == NULL) { 2656 *length = line_end - line; 2657 return line; 2658 } 2659 2660 /* Remove escapes from '\n' and '#' */ 2661 tp = ptr = escaped; 2662 escaped = line; 2663 for (; ; *tp++ = ch) { 2664 ch = *ptr++; 2665 if (ch != '\\') { 2666 if (ch == 0) 2667 break; 2668 continue; 2669 } 2670 2671 ch = *ptr++; 2672 if (ch == 0) { 2673 /* Delete '\\' at end of buffer */ 2674 tp--; 2675 break; 2676 } 2677 2678 if (ch == '#' && line[0] != '\t') 2679 /* Delete '\\' from before '#' on non-command lines */ 2680 continue; 2681 2682 if (ch != '\n') { 2683 /* Leave '\\' in buffer for later */ 2684 *tp++ = '\\'; 2685 /* Make sure we don't delete an escaped ' ' from the line end */ 2686 escaped = tp + 1; 2687 continue; 2688 } 2689 2690 /* Escaped '\n' replace following whitespace with a single ' ' */ 2691 while (ptr[0] == ' ' || ptr[0] == '\t') 2692 ptr++; 2693 ch = ' '; 2694 } 2695 2696 /* Delete any trailing spaces - eg from empty continuations */ 2697 while (tp > escaped && isspace((unsigned char)tp[-1])) 2698 tp--; 2699 2700 *tp = 0; 2701 *length = tp - line; 2702 return line; 2703 } 2704 2705 /*- 2706 *--------------------------------------------------------------------- 2707 * ParseReadLine -- 2708 * Read an entire line from the input file. Called only by Parse_File. 2709 * 2710 * Results: 2711 * A line w/o its newline 2712 * 2713 * Side Effects: 2714 * Only those associated with reading a character 2715 *--------------------------------------------------------------------- 2716 */ 2717 static char * 2718 ParseReadLine(void) 2719 { 2720 char *line; /* Result */ 2721 int lineLength; /* Length of result */ 2722 int lineno; /* Saved line # */ 2723 int rval; 2724 2725 for (;;) { 2726 line = ParseGetLine(0, &lineLength); 2727 if (line == NULL) 2728 return NULL; 2729 2730 if (line[0] != '.') 2731 return line; 2732 2733 /* 2734 * The line might be a conditional. Ask the conditional module 2735 * about it and act accordingly 2736 */ 2737 switch (Cond_Eval(line)) { 2738 case COND_SKIP: 2739 /* Skip to next conditional that evaluates to COND_PARSE. */ 2740 do { 2741 line = ParseGetLine(PARSE_SKIP, &lineLength); 2742 } while (line && Cond_Eval(line) != COND_PARSE); 2743 if (line == NULL) 2744 break; 2745 continue; 2746 case COND_PARSE: 2747 continue; 2748 case COND_INVALID: /* Not a conditional line */ 2749 /* Check for .for loops */ 2750 rval = For_Eval(line); 2751 if (rval == 0) 2752 /* Not a .for line */ 2753 break; 2754 if (rval < 0) 2755 /* Syntax error - error printed, ignore line */ 2756 continue; 2757 /* Start of a .for loop */ 2758 lineno = curFile->lineno; 2759 /* Accumulate loop lines until matching .endfor */ 2760 do { 2761 line = ParseGetLine(PARSE_RAW, &lineLength); 2762 if (line == NULL) { 2763 Parse_Error(PARSE_FATAL, 2764 "Unexpected end of file in for loop."); 2765 break; 2766 } 2767 } while (For_Accum(line)); 2768 /* Stash each iteration as a new 'input file' */ 2769 For_Run(lineno); 2770 /* Read next line from for-loop buffer */ 2771 continue; 2772 } 2773 return (line); 2774 } 2775 } 2776 2777 /*- 2778 *----------------------------------------------------------------------- 2779 * ParseFinishLine -- 2780 * Handle the end of a dependency group. 2781 * 2782 * Results: 2783 * Nothing. 2784 * 2785 * Side Effects: 2786 * inLine set FALSE. 'targets' list destroyed. 2787 * 2788 *----------------------------------------------------------------------- 2789 */ 2790 static void 2791 ParseFinishLine(void) 2792 { 2793 if (inLine) { 2794 Lst_ForEach(targets, Suff_EndTransform, NULL); 2795 Lst_Destroy(targets, ParseHasCommands); 2796 targets = NULL; 2797 inLine = FALSE; 2798 } 2799 } 2800 2801 2802 /*- 2803 *--------------------------------------------------------------------- 2804 * Parse_File -- 2805 * Parse a file into its component parts, incorporating it into the 2806 * current dependency graph. This is the main function and controls 2807 * almost every other function in this module 2808 * 2809 * Input: 2810 * name the name of the file being read 2811 * fd Open file to makefile to parse 2812 * 2813 * Results: 2814 * None 2815 * 2816 * Side Effects: 2817 * closes fd. 2818 * Loads. Nodes are added to the list of all targets, nodes and links 2819 * are added to the dependency graph. etc. etc. etc. 2820 *--------------------------------------------------------------------- 2821 */ 2822 void 2823 Parse_File(const char *name, int fd) 2824 { 2825 char *cp; /* pointer into the line */ 2826 char *line; /* the line we're working on */ 2827 struct loadedfile *lf; 2828 2829 lf = loadfile(name, fd); 2830 2831 inLine = FALSE; 2832 fatals = 0; 2833 2834 if (name == NULL) { 2835 name = "(stdin)"; 2836 } 2837 2838 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2839 curFile->lf = lf; 2840 2841 do { 2842 for (; (line = ParseReadLine()) != NULL; ) { 2843 if (DEBUG(PARSE)) 2844 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2845 curFile->lineno, line); 2846 if (*line == '.') { 2847 /* 2848 * Lines that begin with the special character may be 2849 * include or undef directives. 2850 * On the other hand they can be suffix rules (.c.o: ...) 2851 * or just dependencies for filenames that start '.'. 2852 */ 2853 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 2854 continue; 2855 } 2856 if (strncmp(cp, "include", 7) == 0 || 2857 ((cp[0] == 's' || cp[0] == '-') && 2858 strncmp(&cp[1], "include", 7) == 0)) { 2859 ParseDoInclude(cp); 2860 continue; 2861 } 2862 if (strncmp(cp, "undef", 5) == 0) { 2863 char *cp2; 2864 for (cp += 5; isspace((unsigned char) *cp); cp++) 2865 continue; 2866 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2867 (*cp2 != '\0'); cp2++) 2868 continue; 2869 *cp2 = '\0'; 2870 Var_Delete(cp, VAR_GLOBAL); 2871 continue; 2872 } else if (strncmp(cp, "export", 6) == 0) { 2873 for (cp += 6; isspace((unsigned char) *cp); cp++) 2874 continue; 2875 Var_Export(cp, 1); 2876 continue; 2877 } else if (strncmp(cp, "unexport", 8) == 0) { 2878 Var_UnExport(cp); 2879 continue; 2880 } else if (strncmp(cp, "info", 4) == 0 || 2881 strncmp(cp, "error", 5) == 0 || 2882 strncmp(cp, "warning", 7) == 0) { 2883 if (ParseMessage(cp)) 2884 continue; 2885 } 2886 } 2887 2888 if (*line == '\t') { 2889 /* 2890 * If a line starts with a tab, it can only hope to be 2891 * a creation command. 2892 */ 2893 cp = line + 1; 2894 shellCommand: 2895 for (; isspace ((unsigned char)*cp); cp++) { 2896 continue; 2897 } 2898 if (*cp) { 2899 if (!inLine) 2900 Parse_Error(PARSE_FATAL, 2901 "Unassociated shell command \"%s\"", 2902 cp); 2903 /* 2904 * So long as it's not a blank line and we're actually 2905 * in a dependency spec, add the command to the list of 2906 * commands of all targets in the dependency spec 2907 */ 2908 if (targets) { 2909 cp = bmake_strdup(cp); 2910 Lst_ForEach(targets, ParseAddCmd, cp); 2911 #ifdef CLEANUP 2912 Lst_AtEnd(targCmds, cp); 2913 #endif 2914 } 2915 } 2916 continue; 2917 } 2918 2919 #ifdef SYSVINCLUDE 2920 if (((strncmp(line, "include", 7) == 0 && 2921 isspace((unsigned char) line[7])) || 2922 ((line[0] == 's' || line[0] == '-') && 2923 strncmp(&line[1], "include", 7) == 0 && 2924 isspace((unsigned char) line[8]))) && 2925 strchr(line, ':') == NULL) { 2926 /* 2927 * It's an S3/S5-style "include". 2928 */ 2929 ParseTraditionalInclude(line); 2930 continue; 2931 } 2932 #endif 2933 #ifdef GMAKEEXPORT 2934 if (strncmp(line, "export", 6) == 0 && 2935 isspace((unsigned char) line[6]) && 2936 strchr(line, ':') == NULL) { 2937 /* 2938 * It's a Gmake "export". 2939 */ 2940 ParseGmakeExport(line); 2941 continue; 2942 } 2943 #endif 2944 if (Parse_IsVar(line)) { 2945 ParseFinishLine(); 2946 Parse_DoVar(line, VAR_GLOBAL); 2947 continue; 2948 } 2949 2950 #ifndef POSIX 2951 /* 2952 * To make life easier on novices, if the line is indented we 2953 * first make sure the line has a dependency operator in it. 2954 * If it doesn't have an operator and we're in a dependency 2955 * line's script, we assume it's actually a shell command 2956 * and add it to the current list of targets. 2957 */ 2958 cp = line; 2959 if (isspace((unsigned char) line[0])) { 2960 while ((*cp != '\0') && isspace((unsigned char) *cp)) 2961 cp++; 2962 while (*cp && (ParseIsEscaped(line, cp) || 2963 (*cp != ':') && (*cp != '!'))) { 2964 cp++; 2965 } 2966 if (*cp == '\0') { 2967 if (inLine) { 2968 Parse_Error(PARSE_WARNING, 2969 "Shell command needs a leading tab"); 2970 goto shellCommand; 2971 } 2972 } 2973 } 2974 #endif 2975 ParseFinishLine(); 2976 2977 /* 2978 * For some reason - probably to make the parser impossible - 2979 * a ';' can be used to separate commands from dependencies. 2980 * Attempt to avoid ';' inside substitution patterns. 2981 */ 2982 { 2983 int level = 0; 2984 2985 for (cp = line; *cp != 0; cp++) { 2986 if (*cp == '\\' && cp[1] != 0) { 2987 cp++; 2988 continue; 2989 } 2990 if (*cp == '$' && 2991 (cp[1] == '(' || cp[1] == '{')) { 2992 level++; 2993 continue; 2994 } 2995 if (level > 0) { 2996 if (*cp == ')' || *cp == '}') { 2997 level--; 2998 continue; 2999 } 3000 } else if (*cp == ';') { 3001 break; 3002 } 3003 } 3004 } 3005 if (*cp != 0) 3006 /* Terminate the dependency list at the ';' */ 3007 *cp++ = 0; 3008 else 3009 cp = NULL; 3010 3011 /* 3012 * We now know it's a dependency line so it needs to have all 3013 * variables expanded before being parsed. Tell the variable 3014 * module to complain if some variable is undefined... 3015 */ 3016 line = Var_Subst(NULL, line, VAR_CMD, TRUE); 3017 3018 /* 3019 * Need a non-circular list for the target nodes 3020 */ 3021 if (targets) 3022 Lst_Destroy(targets, NULL); 3023 3024 targets = Lst_Init(FALSE); 3025 inLine = TRUE; 3026 3027 ParseDoDependency(line); 3028 free(line); 3029 3030 /* If there were commands after a ';', add them now */ 3031 if (cp != NULL) { 3032 goto shellCommand; 3033 } 3034 } 3035 /* 3036 * Reached EOF, but it may be just EOF of an include file... 3037 */ 3038 } while (ParseEOF() == CONTINUE); 3039 3040 if (fatals) { 3041 (void)fflush(stdout); 3042 (void)fprintf(stderr, 3043 "%s: Fatal errors encountered -- cannot continue", 3044 progname); 3045 PrintOnError(NULL, NULL); 3046 exit(1); 3047 } 3048 } 3049 3050 /*- 3051 *--------------------------------------------------------------------- 3052 * Parse_Init -- 3053 * initialize the parsing module 3054 * 3055 * Results: 3056 * none 3057 * 3058 * Side Effects: 3059 * the parseIncPath list is initialized... 3060 *--------------------------------------------------------------------- 3061 */ 3062 void 3063 Parse_Init(void) 3064 { 3065 mainNode = NULL; 3066 parseIncPath = Lst_Init(FALSE); 3067 sysIncPath = Lst_Init(FALSE); 3068 defIncPath = Lst_Init(FALSE); 3069 includes = Lst_Init(FALSE); 3070 #ifdef CLEANUP 3071 targCmds = Lst_Init(FALSE); 3072 #endif 3073 } 3074 3075 void 3076 Parse_End(void) 3077 { 3078 #ifdef CLEANUP 3079 Lst_Destroy(targCmds, (FreeProc *)free); 3080 if (targets) 3081 Lst_Destroy(targets, NULL); 3082 Lst_Destroy(defIncPath, Dir_Destroy); 3083 Lst_Destroy(sysIncPath, Dir_Destroy); 3084 Lst_Destroy(parseIncPath, Dir_Destroy); 3085 Lst_Destroy(includes, NULL); /* Should be empty now */ 3086 #endif 3087 } 3088 3089 3090 /*- 3091 *----------------------------------------------------------------------- 3092 * Parse_MainName -- 3093 * Return a Lst of the main target to create for main()'s sake. If 3094 * no such target exists, we Punt with an obnoxious error message. 3095 * 3096 * Results: 3097 * A Lst of the single node to create. 3098 * 3099 * Side Effects: 3100 * None. 3101 * 3102 *----------------------------------------------------------------------- 3103 */ 3104 Lst 3105 Parse_MainName(void) 3106 { 3107 Lst mainList; /* result list */ 3108 3109 mainList = Lst_Init(FALSE); 3110 3111 if (mainNode == NULL) { 3112 Punt("no target to make."); 3113 /*NOTREACHED*/ 3114 } else if (mainNode->type & OP_DOUBLEDEP) { 3115 (void)Lst_AtEnd(mainList, mainNode); 3116 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3117 } 3118 else 3119 (void)Lst_AtEnd(mainList, mainNode); 3120 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3121 return (mainList); 3122 } 3123 3124 /*- 3125 *----------------------------------------------------------------------- 3126 * ParseMark -- 3127 * Add the filename and lineno to the GNode so that we remember 3128 * where it was first defined. 3129 * 3130 * Side Effects: 3131 * None. 3132 * 3133 *----------------------------------------------------------------------- 3134 */ 3135 static void 3136 ParseMark(GNode *gn) 3137 { 3138 gn->fname = curFile->fname; 3139 gn->lineno = curFile->lineno; 3140 } 3141