1 /* $NetBSD: parse.c,v 1.192 2013/10/18 20:47:06 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: parse.c,v 1.192 2013/10/18 20:47:06 christos Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 #if 0 77 static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94"; 78 #else 79 __RCSID("$NetBSD: parse.c,v 1.192 2013/10/18 20:47:06 christos Exp $"); 80 #endif 81 #endif /* not lint */ 82 #endif 83 84 /*- 85 * parse.c -- 86 * Functions to parse a makefile. 87 * 88 * One function, Parse_Init, must be called before any functions 89 * in this module are used. After that, the function Parse_File is the 90 * main entry point and controls most of the other functions in this 91 * module. 92 * 93 * Most important structures are kept in Lsts. Directories for 94 * the .include "..." function are kept in the 'parseIncPath' Lst, while 95 * those for the .include <...> are kept in the 'sysIncPath' Lst. The 96 * targets currently being defined are kept in the 'targets' Lst. 97 * 98 * The variables 'fname' and 'lineno' are used to track the name 99 * of the current file and the line number in that file so that error 100 * messages can be more meaningful. 101 * 102 * Interface: 103 * Parse_Init Initialization function which must be 104 * called before anything else in this module 105 * is used. 106 * 107 * Parse_End Cleanup the module 108 * 109 * Parse_File Function used to parse a makefile. It must 110 * be given the name of the file, which should 111 * already have been opened, and a function 112 * to call to read a character from the file. 113 * 114 * Parse_IsVar Returns TRUE if the given line is a 115 * variable assignment. Used by MainParseArgs 116 * to determine if an argument is a target 117 * or a variable assignment. Used internally 118 * for pretty much the same thing... 119 * 120 * Parse_Error Function called when an error occurs in 121 * parsing. Used by the variable and 122 * conditional modules. 123 * Parse_MainName Returns a Lst of the main target to create. 124 */ 125 126 #include <sys/types.h> 127 #include <sys/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 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 1220 (void)Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt); 1221 if (freeIt) 1222 free(freeIt); 1223 cp += length-1; 1224 } 1225 } 1226 1227 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1228 /* 1229 * Archives must be handled specially to make sure the OP_ARCHV 1230 * flag is set in their 'type' field, for one thing, and because 1231 * things like "archive(file1.o file2.o file3.o)" are permissible. 1232 * Arch_ParseArchive will set 'line' to be the first non-blank 1233 * after the archive-spec. It creates/finds nodes for the members 1234 * and places them on the given list, returning SUCCESS if all 1235 * went well and FAILURE if there was an error in the 1236 * specification. On error, line should remain untouched. 1237 */ 1238 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1239 Parse_Error(PARSE_FATAL, 1240 "Error in archive specification: \"%s\"", line); 1241 goto out; 1242 } else { 1243 continue; 1244 } 1245 } 1246 savec = *cp; 1247 1248 if (!*cp) { 1249 /* 1250 * Ending a dependency line without an operator is a Bozo 1251 * no-no. As a heuristic, this is also often triggered by 1252 * undetected conflicts from cvs/rcs merges. 1253 */ 1254 if ((strncmp(line, "<<<<<<", 6) == 0) || 1255 (strncmp(line, "======", 6) == 0) || 1256 (strncmp(line, ">>>>>>", 6) == 0)) 1257 Parse_Error(PARSE_FATAL, 1258 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1259 else 1260 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1261 : "Need an operator"); 1262 goto out; 1263 } 1264 *cp = '\0'; 1265 1266 /* 1267 * Have a word in line. See if it's a special target and set 1268 * specType to match it. 1269 */ 1270 if (*line == '.' && isupper ((unsigned char)line[1])) { 1271 /* 1272 * See if the target is a special target that must have it 1273 * or its sources handled specially. 1274 */ 1275 int keywd = ParseFindKeyword(line); 1276 if (keywd != -1) { 1277 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1278 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1279 goto out; 1280 } 1281 1282 specType = parseKeywords[keywd].spec; 1283 tOp = parseKeywords[keywd].op; 1284 1285 /* 1286 * Certain special targets have special semantics: 1287 * .PATH Have to set the dirSearchPath 1288 * variable too 1289 * .MAIN Its sources are only used if 1290 * nothing has been specified to 1291 * create. 1292 * .DEFAULT Need to create a node to hang 1293 * commands on, but we don't want 1294 * it in the graph, nor do we want 1295 * it to be the Main Target, so we 1296 * create it, set OP_NOTMAIN and 1297 * add it to the list, setting 1298 * DEFAULT to the new node for 1299 * later use. We claim the node is 1300 * A transformation rule to make 1301 * life easier later, when we'll 1302 * use Make_HandleUse to actually 1303 * apply the .DEFAULT commands. 1304 * .PHONY The list of targets 1305 * .NOPATH Don't search for file in the path 1306 * .STALE 1307 * .BEGIN 1308 * .END 1309 * .ERROR 1310 * .INTERRUPT Are not to be considered the 1311 * main target. 1312 * .NOTPARALLEL Make only one target at a time. 1313 * .SINGLESHELL Create a shell for each command. 1314 * .ORDER Must set initial predecessor to NULL 1315 */ 1316 switch (specType) { 1317 case ExPath: 1318 if (paths == NULL) { 1319 paths = Lst_Init(FALSE); 1320 } 1321 (void)Lst_AtEnd(paths, dirSearchPath); 1322 break; 1323 case Main: 1324 if (!Lst_IsEmpty(create)) { 1325 specType = Not; 1326 } 1327 break; 1328 case Begin: 1329 case End: 1330 case Stale: 1331 case dotError: 1332 case Interrupt: 1333 gn = Targ_FindNode(line, TARG_CREATE); 1334 if (doing_depend) 1335 ParseMark(gn); 1336 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1337 (void)Lst_AtEnd(targets, gn); 1338 break; 1339 case Default: 1340 gn = Targ_NewGN(".DEFAULT"); 1341 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1342 (void)Lst_AtEnd(targets, gn); 1343 DEFAULT = gn; 1344 break; 1345 case NotParallel: 1346 maxJobs = 1; 1347 break; 1348 case SingleShell: 1349 compatMake = TRUE; 1350 break; 1351 case Order: 1352 predecessor = NULL; 1353 break; 1354 default: 1355 break; 1356 } 1357 } else if (strncmp(line, ".PATH", 5) == 0) { 1358 /* 1359 * .PATH<suffix> has to be handled specially. 1360 * Call on the suffix module to give us a path to 1361 * modify. 1362 */ 1363 Lst path; 1364 1365 specType = ExPath; 1366 path = Suff_GetPath(&line[5]); 1367 if (path == NULL) { 1368 Parse_Error(PARSE_FATAL, 1369 "Suffix '%s' not defined (yet)", 1370 &line[5]); 1371 goto out; 1372 } else { 1373 if (paths == NULL) { 1374 paths = Lst_Init(FALSE); 1375 } 1376 (void)Lst_AtEnd(paths, path); 1377 } 1378 } 1379 } 1380 1381 /* 1382 * Have word in line. Get or create its node and stick it at 1383 * the end of the targets list 1384 */ 1385 if ((specType == Not) && (*line != '\0')) { 1386 if (Dir_HasWildcards(line)) { 1387 /* 1388 * Targets are to be sought only in the current directory, 1389 * so create an empty path for the thing. Note we need to 1390 * use Dir_Destroy in the destruction of the path as the 1391 * Dir module could have added a directory to the path... 1392 */ 1393 Lst emptyPath = Lst_Init(FALSE); 1394 1395 Dir_Expand(line, emptyPath, curTargs); 1396 1397 Lst_Destroy(emptyPath, Dir_Destroy); 1398 } else { 1399 /* 1400 * No wildcards, but we want to avoid code duplication, 1401 * so create a list with the word on it. 1402 */ 1403 (void)Lst_AtEnd(curTargs, line); 1404 } 1405 1406 while(!Lst_IsEmpty(curTargs)) { 1407 char *targName = (char *)Lst_DeQueue(curTargs); 1408 1409 if (!Suff_IsTransform (targName)) { 1410 gn = Targ_FindNode(targName, TARG_CREATE); 1411 } else { 1412 gn = Suff_AddTransform(targName); 1413 } 1414 if (doing_depend) 1415 ParseMark(gn); 1416 1417 (void)Lst_AtEnd(targets, gn); 1418 } 1419 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1420 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1421 } 1422 1423 *cp = savec; 1424 /* 1425 * If it is a special type and not .PATH, it's the only target we 1426 * allow on this line... 1427 */ 1428 if (specType != Not && specType != ExPath) { 1429 Boolean warning = FALSE; 1430 1431 while (*cp && (ParseIsEscaped(lstart, cp) || 1432 ((*cp != '!') && (*cp != ':')))) { 1433 if (ParseIsEscaped(lstart, cp) || 1434 (*cp != ' ' && *cp != '\t')) { 1435 warning = TRUE; 1436 } 1437 cp++; 1438 } 1439 if (warning) { 1440 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1441 } 1442 } else { 1443 while (*cp && isspace ((unsigned char)*cp)) { 1444 cp++; 1445 } 1446 } 1447 line = cp; 1448 } while (*line && (ParseIsEscaped(lstart, line) || 1449 ((*line != '!') && (*line != ':')))); 1450 1451 /* 1452 * Don't need the list of target names anymore... 1453 */ 1454 Lst_Destroy(curTargs, NULL); 1455 curTargs = NULL; 1456 1457 if (!Lst_IsEmpty(targets)) { 1458 switch(specType) { 1459 default: 1460 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1461 break; 1462 case Default: 1463 case Stale: 1464 case Begin: 1465 case End: 1466 case dotError: 1467 case Interrupt: 1468 /* 1469 * These four create nodes on which to hang commands, so 1470 * targets shouldn't be empty... 1471 */ 1472 case Not: 1473 /* 1474 * Nothing special here -- targets can be empty if it wants. 1475 */ 1476 break; 1477 } 1478 } 1479 1480 /* 1481 * Have now parsed all the target names. Must parse the operator next. The 1482 * result is left in op . 1483 */ 1484 if (*cp == '!') { 1485 op = OP_FORCE; 1486 } else if (*cp == ':') { 1487 if (cp[1] == ':') { 1488 op = OP_DOUBLEDEP; 1489 cp++; 1490 } else { 1491 op = OP_DEPENDS; 1492 } 1493 } else { 1494 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1495 : "Missing dependency operator"); 1496 goto out; 1497 } 1498 1499 cp++; /* Advance beyond operator */ 1500 1501 Lst_ForEach(targets, ParseDoOp, &op); 1502 1503 /* 1504 * Get to the first source 1505 */ 1506 while (*cp && isspace ((unsigned char)*cp)) { 1507 cp++; 1508 } 1509 line = cp; 1510 1511 /* 1512 * Several special targets take different actions if present with no 1513 * sources: 1514 * a .SUFFIXES line with no sources clears out all old suffixes 1515 * a .PRECIOUS line makes all targets precious 1516 * a .IGNORE line ignores errors for all targets 1517 * a .SILENT line creates silence when making all targets 1518 * a .PATH removes all directories from the search path(s). 1519 */ 1520 if (!*line) { 1521 switch (specType) { 1522 case Suffixes: 1523 Suff_ClearSuffixes(); 1524 break; 1525 case Precious: 1526 allPrecious = TRUE; 1527 break; 1528 case Ignore: 1529 ignoreErrors = TRUE; 1530 break; 1531 case Silent: 1532 beSilent = TRUE; 1533 break; 1534 case ExPath: 1535 Lst_ForEach(paths, ParseClearPath, NULL); 1536 Dir_SetPATH(); 1537 break; 1538 #ifdef POSIX 1539 case Posix: 1540 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1541 break; 1542 #endif 1543 default: 1544 break; 1545 } 1546 } else if (specType == MFlags) { 1547 /* 1548 * Call on functions in main.c to deal with these arguments and 1549 * set the initial character to a null-character so the loop to 1550 * get sources won't get anything 1551 */ 1552 Main_ParseArgLine(line); 1553 *line = '\0'; 1554 } else if (specType == ExShell) { 1555 if (Job_ParseShell(line) != SUCCESS) { 1556 Parse_Error(PARSE_FATAL, "improper shell specification"); 1557 goto out; 1558 } 1559 *line = '\0'; 1560 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1561 *line = '\0'; 1562 } 1563 1564 /* 1565 * NOW GO FOR THE SOURCES 1566 */ 1567 if ((specType == Suffixes) || (specType == ExPath) || 1568 (specType == Includes) || (specType == Libs) || 1569 (specType == Null) || (specType == ExObjdir)) 1570 { 1571 while (*line) { 1572 /* 1573 * If the target was one that doesn't take files as its sources 1574 * but takes something like suffixes, we take each 1575 * space-separated word on the line as a something and deal 1576 * with it accordingly. 1577 * 1578 * If the target was .SUFFIXES, we take each source as a 1579 * suffix and add it to the list of suffixes maintained by the 1580 * Suff module. 1581 * 1582 * If the target was a .PATH, we add the source as a directory 1583 * to search on the search path. 1584 * 1585 * If it was .INCLUDES, the source is taken to be the suffix of 1586 * files which will be #included and whose search path should 1587 * be present in the .INCLUDES variable. 1588 * 1589 * If it was .LIBS, the source is taken to be the suffix of 1590 * files which are considered libraries and whose search path 1591 * should be present in the .LIBS variable. 1592 * 1593 * If it was .NULL, the source is the suffix to use when a file 1594 * has no valid suffix. 1595 * 1596 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1597 * and will cause make to do a new chdir to that path. 1598 */ 1599 while (*cp && !isspace ((unsigned char)*cp)) { 1600 cp++; 1601 } 1602 savec = *cp; 1603 *cp = '\0'; 1604 switch (specType) { 1605 case Suffixes: 1606 Suff_AddSuffix(line, &mainNode); 1607 break; 1608 case ExPath: 1609 Lst_ForEach(paths, ParseAddDir, line); 1610 break; 1611 case Includes: 1612 Suff_AddInclude(line); 1613 break; 1614 case Libs: 1615 Suff_AddLib(line); 1616 break; 1617 case Null: 1618 Suff_SetNull(line); 1619 break; 1620 case ExObjdir: 1621 Main_SetObjdir(line); 1622 break; 1623 default: 1624 break; 1625 } 1626 *cp = savec; 1627 if (savec != '\0') { 1628 cp++; 1629 } 1630 while (*cp && isspace ((unsigned char)*cp)) { 1631 cp++; 1632 } 1633 line = cp; 1634 } 1635 if (paths) { 1636 Lst_Destroy(paths, NULL); 1637 } 1638 if (specType == ExPath) 1639 Dir_SetPATH(); 1640 } else { 1641 while (*line) { 1642 /* 1643 * The targets take real sources, so we must beware of archive 1644 * specifications (i.e. things with left parentheses in them) 1645 * and handle them accordingly. 1646 */ 1647 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1648 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1649 /* 1650 * Only stop for a left parenthesis if it isn't at the 1651 * start of a word (that'll be for variable changes 1652 * later) and isn't preceded by a dollar sign (a dynamic 1653 * source). 1654 */ 1655 break; 1656 } 1657 } 1658 1659 if (*cp == LPAREN) { 1660 sources = Lst_Init(FALSE); 1661 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1662 Parse_Error(PARSE_FATAL, 1663 "Error in source archive spec \"%s\"", line); 1664 goto out; 1665 } 1666 1667 while (!Lst_IsEmpty (sources)) { 1668 gn = (GNode *)Lst_DeQueue(sources); 1669 ParseDoSrc(tOp, gn->name); 1670 } 1671 Lst_Destroy(sources, NULL); 1672 cp = line; 1673 } else { 1674 if (*cp) { 1675 *cp = '\0'; 1676 cp += 1; 1677 } 1678 1679 ParseDoSrc(tOp, line); 1680 } 1681 while (*cp && isspace ((unsigned char)*cp)) { 1682 cp++; 1683 } 1684 line = cp; 1685 } 1686 } 1687 1688 if (mainNode == NULL) { 1689 /* 1690 * If we have yet to decide on a main target to make, in the 1691 * absence of any user input, we want the first target on 1692 * the first dependency line that is actually a real target 1693 * (i.e. isn't a .USE or .EXEC rule) to be made. 1694 */ 1695 Lst_ForEach(targets, ParseFindMain, NULL); 1696 } 1697 1698 out: 1699 if (curTargs) 1700 Lst_Destroy(curTargs, NULL); 1701 } 1702 1703 /*- 1704 *--------------------------------------------------------------------- 1705 * Parse_IsVar -- 1706 * Return TRUE if the passed line is a variable assignment. A variable 1707 * assignment consists of a single word followed by optional whitespace 1708 * followed by either a += or an = operator. 1709 * This function is used both by the Parse_File function and main when 1710 * parsing the command-line arguments. 1711 * 1712 * Input: 1713 * line the line to check 1714 * 1715 * Results: 1716 * TRUE if it is. FALSE if it ain't 1717 * 1718 * Side Effects: 1719 * none 1720 *--------------------------------------------------------------------- 1721 */ 1722 Boolean 1723 Parse_IsVar(char *line) 1724 { 1725 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1726 char ch; 1727 int level = 0; 1728 #define ISEQOPERATOR(c) \ 1729 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1730 1731 /* 1732 * Skip to variable name 1733 */ 1734 for (;(*line == ' ') || (*line == '\t'); line++) 1735 continue; 1736 1737 /* Scan for one of the assignment operators outside a variable expansion */ 1738 while ((ch = *line++) != 0) { 1739 if (ch == '(' || ch == '{') { 1740 level++; 1741 continue; 1742 } 1743 if (ch == ')' || ch == '}') { 1744 level--; 1745 continue; 1746 } 1747 if (level != 0) 1748 continue; 1749 while (ch == ' ' || ch == '\t') { 1750 ch = *line++; 1751 wasSpace = TRUE; 1752 } 1753 #ifdef SUNSHCMD 1754 if (ch == ':' && strncmp(line, "sh", 2) == 0) { 1755 line += 2; 1756 continue; 1757 } 1758 #endif 1759 if (ch == '=') 1760 return TRUE; 1761 if (*line == '=' && ISEQOPERATOR(ch)) 1762 return TRUE; 1763 if (wasSpace) 1764 return FALSE; 1765 } 1766 1767 return FALSE; 1768 } 1769 1770 /*- 1771 *--------------------------------------------------------------------- 1772 * Parse_DoVar -- 1773 * Take the variable assignment in the passed line and do it in the 1774 * global context. 1775 * 1776 * Note: There is a lexical ambiguity with assignment modifier characters 1777 * in variable names. This routine interprets the character before the = 1778 * as a modifier. Therefore, an assignment like 1779 * C++=/usr/bin/CC 1780 * is interpreted as "C+ +=" instead of "C++ =". 1781 * 1782 * Input: 1783 * line a line guaranteed to be a variable assignment. 1784 * This reduces error checks 1785 * ctxt Context in which to do the assignment 1786 * 1787 * Results: 1788 * none 1789 * 1790 * Side Effects: 1791 * the variable structure of the given variable name is altered in the 1792 * global context. 1793 *--------------------------------------------------------------------- 1794 */ 1795 void 1796 Parse_DoVar(char *line, GNode *ctxt) 1797 { 1798 char *cp; /* pointer into line */ 1799 enum { 1800 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1801 } type; /* Type of assignment */ 1802 char *opc; /* ptr to operator character to 1803 * null-terminate the variable name */ 1804 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1805 * i.e. if any variable expansion was 1806 * performed */ 1807 int depth; 1808 1809 /* 1810 * Skip to variable name 1811 */ 1812 while ((*line == ' ') || (*line == '\t')) { 1813 line++; 1814 } 1815 1816 /* 1817 * Skip to operator character, nulling out whitespace as we go 1818 * XXX Rather than counting () and {} we should look for $ and 1819 * then expand the variable. 1820 */ 1821 for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) { 1822 if (*cp == '(' || *cp == '{') { 1823 depth++; 1824 continue; 1825 } 1826 if (*cp == ')' || *cp == '}') { 1827 depth--; 1828 continue; 1829 } 1830 if (depth == 0 && isspace ((unsigned char)*cp)) { 1831 *cp = '\0'; 1832 } 1833 } 1834 opc = cp-1; /* operator is the previous character */ 1835 *cp++ = '\0'; /* nuke the = */ 1836 1837 /* 1838 * Check operator type 1839 */ 1840 switch (*opc) { 1841 case '+': 1842 type = VAR_APPEND; 1843 *opc = '\0'; 1844 break; 1845 1846 case '?': 1847 /* 1848 * If the variable already has a value, we don't do anything. 1849 */ 1850 *opc = '\0'; 1851 if (Var_Exists(line, ctxt)) { 1852 return; 1853 } else { 1854 type = VAR_NORMAL; 1855 } 1856 break; 1857 1858 case ':': 1859 type = VAR_SUBST; 1860 *opc = '\0'; 1861 break; 1862 1863 case '!': 1864 type = VAR_SHELL; 1865 *opc = '\0'; 1866 break; 1867 1868 default: 1869 #ifdef SUNSHCMD 1870 while (opc > line && *opc != ':') 1871 opc--; 1872 1873 if (strncmp(opc, ":sh", 3) == 0) { 1874 type = VAR_SHELL; 1875 *opc = '\0'; 1876 break; 1877 } 1878 #endif 1879 type = VAR_NORMAL; 1880 break; 1881 } 1882 1883 while (isspace ((unsigned char)*cp)) { 1884 cp++; 1885 } 1886 1887 if (type == VAR_APPEND) { 1888 Var_Append(line, cp, ctxt); 1889 } else if (type == VAR_SUBST) { 1890 /* 1891 * Allow variables in the old value to be undefined, but leave their 1892 * invocation alone -- this is done by forcing oldVars to be false. 1893 * XXX: This can cause recursive variables, but that's not hard to do, 1894 * and this allows someone to do something like 1895 * 1896 * CFLAGS = $(.INCLUDES) 1897 * CFLAGS := -I.. $(CFLAGS) 1898 * 1899 * And not get an error. 1900 */ 1901 Boolean oldOldVars = oldVars; 1902 1903 oldVars = FALSE; 1904 1905 /* 1906 * make sure that we set the variable the first time to nothing 1907 * so that it gets substituted! 1908 */ 1909 if (!Var_Exists(line, ctxt)) 1910 Var_Set(line, "", ctxt, 0); 1911 1912 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1913 oldVars = oldOldVars; 1914 freeCp = TRUE; 1915 1916 Var_Set(line, cp, ctxt, 0); 1917 } else if (type == VAR_SHELL) { 1918 char *res; 1919 const char *error; 1920 1921 if (strchr(cp, '$') != NULL) { 1922 /* 1923 * There's a dollar sign in the command, so perform variable 1924 * expansion on the whole thing. The resulting string will need 1925 * freeing when we're done, so set freeCmd to TRUE. 1926 */ 1927 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1928 freeCp = TRUE; 1929 } 1930 1931 res = Cmd_Exec(cp, &error); 1932 Var_Set(line, res, ctxt, 0); 1933 free(res); 1934 1935 if (error) 1936 Parse_Error(PARSE_WARNING, error, cp); 1937 } else { 1938 /* 1939 * Normal assignment -- just do it. 1940 */ 1941 Var_Set(line, cp, ctxt, 0); 1942 } 1943 if (strcmp(line, MAKEOVERRIDES) == 0) 1944 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1945 else if (strcmp(line, ".CURDIR") == 0) { 1946 /* 1947 * Somone is being (too?) clever... 1948 * Let's pretend they know what they are doing and 1949 * re-initialize the 'cur' Path. 1950 */ 1951 Dir_InitCur(cp); 1952 Dir_SetPATH(); 1953 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 1954 Job_SetPrefix(); 1955 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 1956 Var_Export(cp, 0); 1957 } 1958 if (freeCp) 1959 free(cp); 1960 } 1961 1962 1963 /*- 1964 * ParseAddCmd -- 1965 * Lst_ForEach function to add a command line to all targets 1966 * 1967 * Input: 1968 * gnp the node to which the command is to be added 1969 * cmd the command to add 1970 * 1971 * Results: 1972 * Always 0 1973 * 1974 * Side Effects: 1975 * A new element is added to the commands list of the node. 1976 */ 1977 static int 1978 ParseAddCmd(void *gnp, void *cmd) 1979 { 1980 GNode *gn = (GNode *)gnp; 1981 1982 /* Add to last (ie current) cohort for :: targets */ 1983 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 1984 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 1985 1986 /* if target already supplied, ignore commands */ 1987 if (!(gn->type & OP_HAS_COMMANDS)) { 1988 (void)Lst_AtEnd(gn->commands, cmd); 1989 ParseMark(gn); 1990 } else { 1991 #ifdef notyet 1992 /* XXX: We cannot do this until we fix the tree */ 1993 (void)Lst_AtEnd(gn->commands, cmd); 1994 Parse_Error(PARSE_WARNING, 1995 "overriding commands for target \"%s\"; " 1996 "previous commands defined at %s: %d ignored", 1997 gn->name, gn->fname, gn->lineno); 1998 #else 1999 Parse_Error(PARSE_WARNING, 2000 "duplicate script for target \"%s\" ignored", 2001 gn->name); 2002 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 2003 "using previous script for \"%s\" defined here", 2004 gn->name); 2005 #endif 2006 } 2007 return(0); 2008 } 2009 2010 /*- 2011 *----------------------------------------------------------------------- 2012 * ParseHasCommands -- 2013 * Callback procedure for Parse_File when destroying the list of 2014 * targets on the last dependency line. Marks a target as already 2015 * having commands if it does, to keep from having shell commands 2016 * on multiple dependency lines. 2017 * 2018 * Input: 2019 * gnp Node to examine 2020 * 2021 * Results: 2022 * None 2023 * 2024 * Side Effects: 2025 * OP_HAS_COMMANDS may be set for the target. 2026 * 2027 *----------------------------------------------------------------------- 2028 */ 2029 static void 2030 ParseHasCommands(void *gnp) 2031 { 2032 GNode *gn = (GNode *)gnp; 2033 if (!Lst_IsEmpty(gn->commands)) { 2034 gn->type |= OP_HAS_COMMANDS; 2035 } 2036 } 2037 2038 /*- 2039 *----------------------------------------------------------------------- 2040 * Parse_AddIncludeDir -- 2041 * Add a directory to the path searched for included makefiles 2042 * bracketed by double-quotes. Used by functions in main.c 2043 * 2044 * Input: 2045 * dir The name of the directory to add 2046 * 2047 * Results: 2048 * None. 2049 * 2050 * Side Effects: 2051 * The directory is appended to the list. 2052 * 2053 *----------------------------------------------------------------------- 2054 */ 2055 void 2056 Parse_AddIncludeDir(char *dir) 2057 { 2058 (void)Dir_AddDir(parseIncPath, dir); 2059 } 2060 2061 /*- 2062 *--------------------------------------------------------------------- 2063 * ParseDoInclude -- 2064 * Push to another file. 2065 * 2066 * The input is the line minus the `.'. A file spec is a string 2067 * enclosed in <> or "". The former is looked for only in sysIncPath. 2068 * The latter in . and the directories specified by -I command line 2069 * options 2070 * 2071 * Results: 2072 * None 2073 * 2074 * Side Effects: 2075 * A structure is added to the includes Lst and readProc, lineno, 2076 * fname and curFILE are altered for the new file 2077 *--------------------------------------------------------------------- 2078 */ 2079 2080 static void 2081 Parse_include_file(char *file, Boolean isSystem, int silent) 2082 { 2083 struct loadedfile *lf; 2084 char *fullname; /* full pathname of file */ 2085 char *newName; 2086 char *prefEnd, *incdir; 2087 int fd; 2088 int i; 2089 2090 /* 2091 * Now we know the file's name and its search path, we attempt to 2092 * find the durn thing. A return of NULL indicates the file don't 2093 * exist. 2094 */ 2095 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2096 2097 if (fullname == NULL && !isSystem) { 2098 /* 2099 * Include files contained in double-quotes are first searched for 2100 * relative to the including file's location. We don't want to 2101 * cd there, of course, so we just tack on the old file's 2102 * leading path components and call Dir_FindFile to see if 2103 * we can locate the beast. 2104 */ 2105 2106 incdir = bmake_strdup(curFile->fname); 2107 prefEnd = strrchr(incdir, '/'); 2108 if (prefEnd != NULL) { 2109 *prefEnd = '\0'; 2110 /* Now do lexical processing of leading "../" on the filename */ 2111 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2112 prefEnd = strrchr(incdir + 1, '/'); 2113 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2114 break; 2115 *prefEnd = '\0'; 2116 } 2117 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2118 fullname = Dir_FindFile(newName, parseIncPath); 2119 if (fullname == NULL) 2120 fullname = Dir_FindFile(newName, dirSearchPath); 2121 free(newName); 2122 } 2123 free(incdir); 2124 2125 if (fullname == NULL) { 2126 /* 2127 * Makefile wasn't found in same directory as included makefile. 2128 * Search for it first on the -I search path, 2129 * then on the .PATH search path, if not found in a -I directory. 2130 * If we have a suffix specific path we should use that. 2131 */ 2132 char *suff; 2133 Lst suffPath = NULL; 2134 2135 if ((suff = strrchr(file, '.'))) { 2136 suffPath = Suff_GetPath(suff); 2137 if (suffPath != NULL) { 2138 fullname = Dir_FindFile(file, suffPath); 2139 } 2140 } 2141 if (fullname == NULL) { 2142 fullname = Dir_FindFile(file, parseIncPath); 2143 if (fullname == NULL) { 2144 fullname = Dir_FindFile(file, dirSearchPath); 2145 } 2146 } 2147 } 2148 } 2149 2150 /* Looking for a system file or file still not found */ 2151 if (fullname == NULL) { 2152 /* 2153 * Look for it on the system path 2154 */ 2155 fullname = Dir_FindFile(file, 2156 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2157 } 2158 2159 if (fullname == NULL) { 2160 if (!silent) 2161 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2162 return; 2163 } 2164 2165 /* Actually open the file... */ 2166 fd = open(fullname, O_RDONLY); 2167 if (fd == -1) { 2168 if (!silent) 2169 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2170 free(fullname); 2171 return; 2172 } 2173 2174 /* load it */ 2175 lf = loadfile(fullname, fd); 2176 2177 /* Start reading from this file next */ 2178 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2179 curFile->lf = lf; 2180 } 2181 2182 static void 2183 ParseDoInclude(char *line) 2184 { 2185 char endc; /* the character which ends the file spec */ 2186 char *cp; /* current position in file spec */ 2187 int silent = (*line != 'i') ? 1 : 0; 2188 char *file = &line[7 + silent]; 2189 2190 /* Skip to delimiter character so we know where to look */ 2191 while (*file == ' ' || *file == '\t') 2192 file++; 2193 2194 if (*file != '"' && *file != '<') { 2195 Parse_Error(PARSE_FATAL, 2196 ".include filename must be delimited by '\"' or '<'"); 2197 return; 2198 } 2199 2200 /* 2201 * Set the search path on which to find the include file based on the 2202 * characters which bracket its name. Angle-brackets imply it's 2203 * a system Makefile while double-quotes imply it's a user makefile 2204 */ 2205 if (*file == '<') { 2206 endc = '>'; 2207 } else { 2208 endc = '"'; 2209 } 2210 2211 /* Skip to matching delimiter */ 2212 for (cp = ++file; *cp && *cp != endc; cp++) 2213 continue; 2214 2215 if (*cp != endc) { 2216 Parse_Error(PARSE_FATAL, 2217 "Unclosed %cinclude filename. '%c' expected", 2218 '.', endc); 2219 return; 2220 } 2221 *cp = '\0'; 2222 2223 /* 2224 * Substitute for any variables in the file name before trying to 2225 * find the thing. 2226 */ 2227 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2228 2229 Parse_include_file(file, endc == '>', silent); 2230 free(file); 2231 } 2232 2233 2234 /*- 2235 *--------------------------------------------------------------------- 2236 * ParseSetParseFile -- 2237 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2238 * basename of the given filename 2239 * 2240 * Results: 2241 * None 2242 * 2243 * Side Effects: 2244 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2245 * dirname and basename of the given filename. 2246 *--------------------------------------------------------------------- 2247 */ 2248 static void 2249 ParseSetParseFile(const char *filename) 2250 { 2251 char *slash, *dirname; 2252 const char *pd, *pf; 2253 int len; 2254 2255 slash = strrchr(filename, '/'); 2256 if (slash == NULL) { 2257 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2258 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2259 dirname= NULL; 2260 } else { 2261 len = slash - filename; 2262 dirname = bmake_malloc(len + 1); 2263 memcpy(dirname, filename, len); 2264 dirname[len] = '\0'; 2265 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2266 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2267 } 2268 if (DEBUG(PARSE)) 2269 fprintf(debug_file, "ParseSetParseFile: ${.PARSEDIR} = `%s' " 2270 "${.PARSEFILE} = `%s'\n", pd, pf); 2271 free(dirname); 2272 } 2273 2274 /* 2275 * Track the makefiles we read - so makefiles can 2276 * set dependencies on them. 2277 * Avoid adding anything more than once. 2278 */ 2279 2280 static void 2281 ParseTrackInput(const char *name) 2282 { 2283 char *old; 2284 char *fp = NULL; 2285 size_t name_len = strlen(name); 2286 2287 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2288 if (old) { 2289 /* does it contain name? */ 2290 for (; old != NULL; old = strchr(old, ' ')) { 2291 if (*old == ' ') 2292 old++; 2293 if (memcmp(old, name, name_len) == 0 2294 && (old[name_len] == 0 || old[name_len] == ' ')) 2295 goto cleanup; 2296 } 2297 } 2298 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2299 cleanup: 2300 if (fp) { 2301 free(fp); 2302 } 2303 } 2304 2305 2306 /*- 2307 *--------------------------------------------------------------------- 2308 * Parse_setInput -- 2309 * Start Parsing from the given source 2310 * 2311 * Results: 2312 * None 2313 * 2314 * Side Effects: 2315 * A structure is added to the includes Lst and readProc, lineno, 2316 * fname and curFile are altered for the new file 2317 *--------------------------------------------------------------------- 2318 */ 2319 void 2320 Parse_SetInput(const char *name, int line, int fd, 2321 char *(*nextbuf)(void *, size_t *), void *arg) 2322 { 2323 char *buf; 2324 size_t len; 2325 2326 if (name == NULL) 2327 name = curFile->fname; 2328 else 2329 ParseTrackInput(name); 2330 2331 if (DEBUG(PARSE)) 2332 fprintf(debug_file, "Parse_SetInput: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2333 name, line, fd, nextbuf, arg); 2334 2335 if (fd == -1 && nextbuf == NULL) 2336 /* sanity */ 2337 return; 2338 2339 if (curFile != NULL) 2340 /* Save exiting file info */ 2341 Lst_AtFront(includes, curFile); 2342 2343 /* Allocate and fill in new structure */ 2344 curFile = bmake_malloc(sizeof *curFile); 2345 2346 /* 2347 * Once the previous state has been saved, we can get down to reading 2348 * the new file. We set up the name of the file to be the absolute 2349 * name of the include file so error messages refer to the right 2350 * place. 2351 */ 2352 curFile->fname = bmake_strdup(name); 2353 curFile->lineno = line; 2354 curFile->first_lineno = line; 2355 curFile->nextbuf = nextbuf; 2356 curFile->nextbuf_arg = arg; 2357 curFile->lf = NULL; 2358 2359 assert(nextbuf != NULL); 2360 2361 /* Get first block of input data */ 2362 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2363 if (buf == NULL) { 2364 /* Was all a waste of time ... */ 2365 if (curFile->fname) 2366 free(curFile->fname); 2367 free(curFile); 2368 return; 2369 } 2370 curFile->P_str = buf; 2371 curFile->P_ptr = buf; 2372 curFile->P_end = buf+len; 2373 2374 curFile->cond_depth = Cond_save_depth(); 2375 ParseSetParseFile(name); 2376 } 2377 2378 #ifdef SYSVINCLUDE 2379 /*- 2380 *--------------------------------------------------------------------- 2381 * ParseTraditionalInclude -- 2382 * Push to another file. 2383 * 2384 * The input is the current line. The file name(s) are 2385 * following the "include". 2386 * 2387 * Results: 2388 * None 2389 * 2390 * Side Effects: 2391 * A structure is added to the includes Lst and readProc, lineno, 2392 * fname and curFILE are altered for the new file 2393 *--------------------------------------------------------------------- 2394 */ 2395 static void 2396 ParseTraditionalInclude(char *line) 2397 { 2398 char *cp; /* current position in file spec */ 2399 int done = 0; 2400 int silent = (line[0] != 'i') ? 1 : 0; 2401 char *file = &line[silent + 7]; 2402 char *all_files; 2403 2404 if (DEBUG(PARSE)) { 2405 fprintf(debug_file, "ParseTraditionalInclude: %s\n", file); 2406 } 2407 2408 /* 2409 * Skip over whitespace 2410 */ 2411 while (isspace((unsigned char)*file)) 2412 file++; 2413 2414 /* 2415 * Substitute for any variables in the file name before trying to 2416 * find the thing. 2417 */ 2418 all_files = Var_Subst(NULL, file, VAR_CMD, FALSE); 2419 2420 if (*file == '\0') { 2421 Parse_Error(PARSE_FATAL, 2422 "Filename missing from \"include\""); 2423 return; 2424 } 2425 2426 for (file = all_files; !done; file = cp + 1) { 2427 /* Skip to end of line or next whitespace */ 2428 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2429 continue; 2430 2431 if (*cp) 2432 *cp = '\0'; 2433 else 2434 done = 1; 2435 2436 Parse_include_file(file, FALSE, silent); 2437 } 2438 free(all_files); 2439 } 2440 #endif 2441 2442 #ifdef GMAKEEXPORT 2443 /*- 2444 *--------------------------------------------------------------------- 2445 * ParseGmakeExport -- 2446 * Parse export <variable>=<value> 2447 * 2448 * And set the environment with it. 2449 * 2450 * Results: 2451 * None 2452 * 2453 * Side Effects: 2454 * None 2455 *--------------------------------------------------------------------- 2456 */ 2457 static void 2458 ParseGmakeExport(char *line) 2459 { 2460 char *variable = &line[6]; 2461 char *value; 2462 2463 if (DEBUG(PARSE)) { 2464 fprintf(debug_file, "ParseGmakeExport: %s\n", variable); 2465 } 2466 2467 /* 2468 * Skip over whitespace 2469 */ 2470 while (isspace((unsigned char)*variable)) 2471 variable++; 2472 2473 for (value = variable; *value && *value != '='; value++) 2474 continue; 2475 2476 if (*value != '=') { 2477 Parse_Error(PARSE_FATAL, 2478 "Variable/Value missing from \"export\""); 2479 return; 2480 } 2481 *value++ = '\0'; /* terminate variable */ 2482 2483 /* 2484 * Expand the value before putting it in the environment. 2485 */ 2486 value = Var_Subst(NULL, value, VAR_CMD, FALSE); 2487 setenv(variable, value, 1); 2488 } 2489 #endif 2490 2491 /*- 2492 *--------------------------------------------------------------------- 2493 * ParseEOF -- 2494 * Called when EOF is reached in the current file. If we were reading 2495 * an include file, the includes stack is popped and things set up 2496 * to go back to reading the previous file at the previous location. 2497 * 2498 * Results: 2499 * CONTINUE if there's more to do. DONE if not. 2500 * 2501 * Side Effects: 2502 * The old curFILE, is closed. The includes list is shortened. 2503 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2504 *--------------------------------------------------------------------- 2505 */ 2506 static int 2507 ParseEOF(void) 2508 { 2509 char *ptr; 2510 size_t len; 2511 2512 assert(curFile->nextbuf != NULL); 2513 2514 /* get next input buffer, if any */ 2515 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2516 curFile->P_ptr = ptr; 2517 curFile->P_str = ptr; 2518 curFile->P_end = ptr + len; 2519 curFile->lineno = curFile->first_lineno; 2520 if (ptr != NULL) { 2521 /* Iterate again */ 2522 return CONTINUE; 2523 } 2524 2525 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2526 Cond_restore_depth(curFile->cond_depth); 2527 2528 if (curFile->lf != NULL) { 2529 loadedfile_destroy(curFile->lf); 2530 curFile->lf = NULL; 2531 } 2532 2533 /* Dispose of curFile info */ 2534 /* Leak curFile->fname because all the gnodes have pointers to it */ 2535 free(curFile->P_str); 2536 free(curFile); 2537 2538 curFile = Lst_DeQueue(includes); 2539 2540 if (curFile == NULL) { 2541 /* We've run out of input */ 2542 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2543 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2544 return DONE; 2545 } 2546 2547 if (DEBUG(PARSE)) 2548 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2549 curFile->fname, curFile->lineno); 2550 2551 /* Restore the PARSEDIR/PARSEFILE variables */ 2552 ParseSetParseFile(curFile->fname); 2553 return (CONTINUE); 2554 } 2555 2556 #define PARSE_RAW 1 2557 #define PARSE_SKIP 2 2558 2559 static char * 2560 ParseGetLine(int flags, int *length) 2561 { 2562 IFile *cf = curFile; 2563 char *ptr; 2564 char ch; 2565 char *line; 2566 char *line_end; 2567 char *escaped; 2568 char *comment; 2569 char *tp; 2570 2571 /* Loop through blank lines and comment lines */ 2572 for (;;) { 2573 cf->lineno++; 2574 line = cf->P_ptr; 2575 ptr = line; 2576 line_end = line; 2577 escaped = NULL; 2578 comment = NULL; 2579 for (;;) { 2580 if (cf->P_end != NULL && ptr == cf->P_end) { 2581 /* end of buffer */ 2582 ch = 0; 2583 break; 2584 } 2585 ch = *ptr; 2586 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2587 if (cf->P_end == NULL) 2588 /* End of string (aka for loop) data */ 2589 break; 2590 /* see if there is more we can parse */ 2591 while (ptr++ < cf->P_end) { 2592 if ((ch = *ptr) == '\n') { 2593 if (ptr > line && ptr[-1] == '\\') 2594 continue; 2595 Parse_Error(PARSE_WARNING, 2596 "Zero byte read from file, skipping rest of line."); 2597 break; 2598 } 2599 } 2600 if (cf->nextbuf != NULL) { 2601 /* 2602 * End of this buffer; return EOF and outer logic 2603 * will get the next one. (eww) 2604 */ 2605 break; 2606 } 2607 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2608 return NULL; 2609 } 2610 2611 if (ch == '\\') { 2612 /* Don't treat next character as special, remember first one */ 2613 if (escaped == NULL) 2614 escaped = ptr; 2615 if (ptr[1] == '\n') 2616 cf->lineno++; 2617 ptr += 2; 2618 line_end = ptr; 2619 continue; 2620 } 2621 if (ch == '#' && comment == NULL) { 2622 /* Remember first '#' for comment stripping */ 2623 /* Unless previous char was '[', as in modifier :[#] */ 2624 if (!(ptr > line && ptr[-1] == '[')) 2625 comment = line_end; 2626 } 2627 ptr++; 2628 if (ch == '\n') 2629 break; 2630 if (!isspace((unsigned char)ch)) 2631 /* We are not interested in trailing whitespace */ 2632 line_end = ptr; 2633 } 2634 2635 /* Save next 'to be processed' location */ 2636 cf->P_ptr = ptr; 2637 2638 /* Check we have a non-comment, non-blank line */ 2639 if (line_end == line || comment == line) { 2640 if (ch == 0) 2641 /* At end of file */ 2642 return NULL; 2643 /* Parse another line */ 2644 continue; 2645 } 2646 2647 /* We now have a line of data */ 2648 *line_end = 0; 2649 2650 if (flags & PARSE_RAW) { 2651 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2652 *length = line_end - line; 2653 return line; 2654 } 2655 2656 if (flags & PARSE_SKIP) { 2657 /* Completely ignore non-directives */ 2658 if (line[0] != '.') 2659 continue; 2660 /* We could do more of the .else/.elif/.endif checks here */ 2661 } 2662 break; 2663 } 2664 2665 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2666 if (comment != NULL && line[0] != '\t') { 2667 line_end = comment; 2668 *line_end = 0; 2669 } 2670 2671 /* If we didn't see a '\\' then the in-situ data is fine */ 2672 if (escaped == NULL) { 2673 *length = line_end - line; 2674 return line; 2675 } 2676 2677 /* Remove escapes from '\n' and '#' */ 2678 tp = ptr = escaped; 2679 escaped = line; 2680 for (; ; *tp++ = ch) { 2681 ch = *ptr++; 2682 if (ch != '\\') { 2683 if (ch == 0) 2684 break; 2685 continue; 2686 } 2687 2688 ch = *ptr++; 2689 if (ch == 0) { 2690 /* Delete '\\' at end of buffer */ 2691 tp--; 2692 break; 2693 } 2694 2695 if (ch == '#' && line[0] != '\t') 2696 /* Delete '\\' from before '#' on non-command lines */ 2697 continue; 2698 2699 if (ch != '\n') { 2700 /* Leave '\\' in buffer for later */ 2701 *tp++ = '\\'; 2702 /* Make sure we don't delete an escaped ' ' from the line end */ 2703 escaped = tp + 1; 2704 continue; 2705 } 2706 2707 /* Escaped '\n' replace following whitespace with a single ' ' */ 2708 while (ptr[0] == ' ' || ptr[0] == '\t') 2709 ptr++; 2710 ch = ' '; 2711 } 2712 2713 /* Delete any trailing spaces - eg from empty continuations */ 2714 while (tp > escaped && isspace((unsigned char)tp[-1])) 2715 tp--; 2716 2717 *tp = 0; 2718 *length = tp - line; 2719 return line; 2720 } 2721 2722 /*- 2723 *--------------------------------------------------------------------- 2724 * ParseReadLine -- 2725 * Read an entire line from the input file. Called only by Parse_File. 2726 * 2727 * Results: 2728 * A line w/o its newline 2729 * 2730 * Side Effects: 2731 * Only those associated with reading a character 2732 *--------------------------------------------------------------------- 2733 */ 2734 static char * 2735 ParseReadLine(void) 2736 { 2737 char *line; /* Result */ 2738 int lineLength; /* Length of result */ 2739 int lineno; /* Saved line # */ 2740 int rval; 2741 2742 for (;;) { 2743 line = ParseGetLine(0, &lineLength); 2744 if (line == NULL) 2745 return NULL; 2746 2747 if (line[0] != '.') 2748 return line; 2749 2750 /* 2751 * The line might be a conditional. Ask the conditional module 2752 * about it and act accordingly 2753 */ 2754 switch (Cond_Eval(line)) { 2755 case COND_SKIP: 2756 /* Skip to next conditional that evaluates to COND_PARSE. */ 2757 do { 2758 line = ParseGetLine(PARSE_SKIP, &lineLength); 2759 } while (line && Cond_Eval(line) != COND_PARSE); 2760 if (line == NULL) 2761 break; 2762 continue; 2763 case COND_PARSE: 2764 continue; 2765 case COND_INVALID: /* Not a conditional line */ 2766 /* Check for .for loops */ 2767 rval = For_Eval(line); 2768 if (rval == 0) 2769 /* Not a .for line */ 2770 break; 2771 if (rval < 0) 2772 /* Syntax error - error printed, ignore line */ 2773 continue; 2774 /* Start of a .for loop */ 2775 lineno = curFile->lineno; 2776 /* Accumulate loop lines until matching .endfor */ 2777 do { 2778 line = ParseGetLine(PARSE_RAW, &lineLength); 2779 if (line == NULL) { 2780 Parse_Error(PARSE_FATAL, 2781 "Unexpected end of file in for loop."); 2782 break; 2783 } 2784 } while (For_Accum(line)); 2785 /* Stash each iteration as a new 'input file' */ 2786 For_Run(lineno); 2787 /* Read next line from for-loop buffer */ 2788 continue; 2789 } 2790 return (line); 2791 } 2792 } 2793 2794 /*- 2795 *----------------------------------------------------------------------- 2796 * ParseFinishLine -- 2797 * Handle the end of a dependency group. 2798 * 2799 * Results: 2800 * Nothing. 2801 * 2802 * Side Effects: 2803 * inLine set FALSE. 'targets' list destroyed. 2804 * 2805 *----------------------------------------------------------------------- 2806 */ 2807 static void 2808 ParseFinishLine(void) 2809 { 2810 if (inLine) { 2811 Lst_ForEach(targets, Suff_EndTransform, NULL); 2812 Lst_Destroy(targets, ParseHasCommands); 2813 targets = NULL; 2814 inLine = FALSE; 2815 } 2816 } 2817 2818 2819 /*- 2820 *--------------------------------------------------------------------- 2821 * Parse_File -- 2822 * Parse a file into its component parts, incorporating it into the 2823 * current dependency graph. This is the main function and controls 2824 * almost every other function in this module 2825 * 2826 * Input: 2827 * name the name of the file being read 2828 * fd Open file to makefile to parse 2829 * 2830 * Results: 2831 * None 2832 * 2833 * Side Effects: 2834 * closes fd. 2835 * Loads. Nodes are added to the list of all targets, nodes and links 2836 * are added to the dependency graph. etc. etc. etc. 2837 *--------------------------------------------------------------------- 2838 */ 2839 void 2840 Parse_File(const char *name, int fd) 2841 { 2842 char *cp; /* pointer into the line */ 2843 char *line; /* the line we're working on */ 2844 struct loadedfile *lf; 2845 2846 lf = loadfile(name, fd); 2847 2848 inLine = FALSE; 2849 fatals = 0; 2850 2851 if (name == NULL) { 2852 name = "(stdin)"; 2853 } 2854 2855 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2856 curFile->lf = lf; 2857 2858 do { 2859 for (; (line = ParseReadLine()) != NULL; ) { 2860 if (DEBUG(PARSE)) 2861 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2862 curFile->lineno, line); 2863 if (*line == '.') { 2864 /* 2865 * Lines that begin with the special character may be 2866 * include or undef directives. 2867 * On the other hand they can be suffix rules (.c.o: ...) 2868 * or just dependencies for filenames that start '.'. 2869 */ 2870 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 2871 continue; 2872 } 2873 if (strncmp(cp, "include", 7) == 0 || 2874 ((cp[0] == 's' || cp[0] == '-') && 2875 strncmp(&cp[1], "include", 7) == 0)) { 2876 ParseDoInclude(cp); 2877 continue; 2878 } 2879 if (strncmp(cp, "undef", 5) == 0) { 2880 char *cp2; 2881 for (cp += 5; isspace((unsigned char) *cp); cp++) 2882 continue; 2883 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2884 (*cp2 != '\0'); cp2++) 2885 continue; 2886 *cp2 = '\0'; 2887 Var_Delete(cp, VAR_GLOBAL); 2888 continue; 2889 } else if (strncmp(cp, "export", 6) == 0) { 2890 for (cp += 6; isspace((unsigned char) *cp); cp++) 2891 continue; 2892 Var_Export(cp, 1); 2893 continue; 2894 } else if (strncmp(cp, "unexport", 8) == 0) { 2895 Var_UnExport(cp); 2896 continue; 2897 } else if (strncmp(cp, "info", 4) == 0 || 2898 strncmp(cp, "error", 5) == 0 || 2899 strncmp(cp, "warning", 7) == 0) { 2900 if (ParseMessage(cp)) 2901 continue; 2902 } 2903 } 2904 2905 if (*line == '\t') { 2906 /* 2907 * If a line starts with a tab, it can only hope to be 2908 * a creation command. 2909 */ 2910 cp = line + 1; 2911 shellCommand: 2912 for (; isspace ((unsigned char)*cp); cp++) { 2913 continue; 2914 } 2915 if (*cp) { 2916 if (!inLine) 2917 Parse_Error(PARSE_FATAL, 2918 "Unassociated shell command \"%s\"", 2919 cp); 2920 /* 2921 * So long as it's not a blank line and we're actually 2922 * in a dependency spec, add the command to the list of 2923 * commands of all targets in the dependency spec 2924 */ 2925 if (targets) { 2926 cp = bmake_strdup(cp); 2927 Lst_ForEach(targets, ParseAddCmd, cp); 2928 #ifdef CLEANUP 2929 Lst_AtEnd(targCmds, cp); 2930 #endif 2931 } 2932 } 2933 continue; 2934 } 2935 2936 #ifdef SYSVINCLUDE 2937 if (((strncmp(line, "include", 7) == 0 && 2938 isspace((unsigned char) line[7])) || 2939 ((line[0] == 's' || line[0] == '-') && 2940 strncmp(&line[1], "include", 7) == 0 && 2941 isspace((unsigned char) line[8]))) && 2942 strchr(line, ':') == NULL) { 2943 /* 2944 * It's an S3/S5-style "include". 2945 */ 2946 ParseTraditionalInclude(line); 2947 continue; 2948 } 2949 #endif 2950 #ifdef GMAKEEXPORT 2951 if (strncmp(line, "export", 6) == 0 && 2952 isspace((unsigned char) line[6]) && 2953 strchr(line, ':') == NULL) { 2954 /* 2955 * It's a Gmake "export". 2956 */ 2957 ParseGmakeExport(line); 2958 continue; 2959 } 2960 #endif 2961 if (Parse_IsVar(line)) { 2962 ParseFinishLine(); 2963 Parse_DoVar(line, VAR_GLOBAL); 2964 continue; 2965 } 2966 2967 #ifndef POSIX 2968 /* 2969 * To make life easier on novices, if the line is indented we 2970 * first make sure the line has a dependency operator in it. 2971 * If it doesn't have an operator and we're in a dependency 2972 * line's script, we assume it's actually a shell command 2973 * and add it to the current list of targets. 2974 */ 2975 cp = line; 2976 if (isspace((unsigned char) line[0])) { 2977 while ((*cp != '\0') && isspace((unsigned char) *cp)) 2978 cp++; 2979 while (*cp && (ParseIsEscaped(line, cp) || 2980 (*cp != ':') && (*cp != '!'))) { 2981 cp++; 2982 } 2983 if (*cp == '\0') { 2984 if (inLine) { 2985 Parse_Error(PARSE_WARNING, 2986 "Shell command needs a leading tab"); 2987 goto shellCommand; 2988 } 2989 } 2990 } 2991 #endif 2992 ParseFinishLine(); 2993 2994 /* 2995 * For some reason - probably to make the parser impossible - 2996 * a ';' can be used to separate commands from dependencies. 2997 * Attempt to avoid ';' inside substitution patterns. 2998 */ 2999 { 3000 int level = 0; 3001 3002 for (cp = line; *cp != 0; cp++) { 3003 if (*cp == '\\' && cp[1] != 0) { 3004 cp++; 3005 continue; 3006 } 3007 if (*cp == '$' && 3008 (cp[1] == '(' || cp[1] == '{')) { 3009 level++; 3010 continue; 3011 } 3012 if (level > 0) { 3013 if (*cp == ')' || *cp == '}') { 3014 level--; 3015 continue; 3016 } 3017 } else if (*cp == ';') { 3018 break; 3019 } 3020 } 3021 } 3022 if (*cp != 0) 3023 /* Terminate the dependency list at the ';' */ 3024 *cp++ = 0; 3025 else 3026 cp = NULL; 3027 3028 /* 3029 * We now know it's a dependency line so it needs to have all 3030 * variables expanded before being parsed. Tell the variable 3031 * module to complain if some variable is undefined... 3032 */ 3033 line = Var_Subst(NULL, line, VAR_CMD, TRUE); 3034 3035 /* 3036 * Need a non-circular list for the target nodes 3037 */ 3038 if (targets) 3039 Lst_Destroy(targets, NULL); 3040 3041 targets = Lst_Init(FALSE); 3042 inLine = TRUE; 3043 3044 ParseDoDependency(line); 3045 free(line); 3046 3047 /* If there were commands after a ';', add them now */ 3048 if (cp != NULL) { 3049 goto shellCommand; 3050 } 3051 } 3052 /* 3053 * Reached EOF, but it may be just EOF of an include file... 3054 */ 3055 } while (ParseEOF() == CONTINUE); 3056 3057 if (fatals) { 3058 (void)fflush(stdout); 3059 (void)fprintf(stderr, 3060 "%s: Fatal errors encountered -- cannot continue", 3061 progname); 3062 PrintOnError(NULL, NULL); 3063 exit(1); 3064 } 3065 } 3066 3067 /*- 3068 *--------------------------------------------------------------------- 3069 * Parse_Init -- 3070 * initialize the parsing module 3071 * 3072 * Results: 3073 * none 3074 * 3075 * Side Effects: 3076 * the parseIncPath list is initialized... 3077 *--------------------------------------------------------------------- 3078 */ 3079 void 3080 Parse_Init(void) 3081 { 3082 mainNode = NULL; 3083 parseIncPath = Lst_Init(FALSE); 3084 sysIncPath = Lst_Init(FALSE); 3085 defIncPath = Lst_Init(FALSE); 3086 includes = Lst_Init(FALSE); 3087 #ifdef CLEANUP 3088 targCmds = Lst_Init(FALSE); 3089 #endif 3090 } 3091 3092 void 3093 Parse_End(void) 3094 { 3095 #ifdef CLEANUP 3096 Lst_Destroy(targCmds, (FreeProc *)free); 3097 if (targets) 3098 Lst_Destroy(targets, NULL); 3099 Lst_Destroy(defIncPath, Dir_Destroy); 3100 Lst_Destroy(sysIncPath, Dir_Destroy); 3101 Lst_Destroy(parseIncPath, Dir_Destroy); 3102 Lst_Destroy(includes, NULL); /* Should be empty now */ 3103 #endif 3104 } 3105 3106 3107 /*- 3108 *----------------------------------------------------------------------- 3109 * Parse_MainName -- 3110 * Return a Lst of the main target to create for main()'s sake. If 3111 * no such target exists, we Punt with an obnoxious error message. 3112 * 3113 * Results: 3114 * A Lst of the single node to create. 3115 * 3116 * Side Effects: 3117 * None. 3118 * 3119 *----------------------------------------------------------------------- 3120 */ 3121 Lst 3122 Parse_MainName(void) 3123 { 3124 Lst mainList; /* result list */ 3125 3126 mainList = Lst_Init(FALSE); 3127 3128 if (mainNode == NULL) { 3129 Punt("no target to make."); 3130 /*NOTREACHED*/ 3131 } else if (mainNode->type & OP_DOUBLEDEP) { 3132 (void)Lst_AtEnd(mainList, mainNode); 3133 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3134 } 3135 else 3136 (void)Lst_AtEnd(mainList, mainNode); 3137 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3138 return (mainList); 3139 } 3140 3141 /*- 3142 *----------------------------------------------------------------------- 3143 * ParseMark -- 3144 * Add the filename and lineno to the GNode so that we remember 3145 * where it was first defined. 3146 * 3147 * Side Effects: 3148 * None. 3149 * 3150 *----------------------------------------------------------------------- 3151 */ 3152 static void 3153 ParseMark(GNode *gn) 3154 { 3155 gn->fname = curFile->fname; 3156 gn->lineno = curFile->lineno; 3157 } 3158