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 Lstat, /* .LSTAT */ 194 Meta, /* .META */ 195 MFlags, /* .MFLAGS or .MAKEFLAGS */ 196 Main, /* .MAIN and we don't have anything user-specified to 197 * make */ 198 NoExport, /* .NOEXPORT */ 199 NoMeta, /* .NOMETA */ 200 NoMetaCmp, /* .NOMETA_CMP */ 201 NoPath, /* .NOPATH */ 202 Not, /* Not special */ 203 NotParallel, /* .NOTPARALLEL */ 204 Null, /* .NULL */ 205 ExObjdir, /* .OBJDIR */ 206 Order, /* .ORDER */ 207 Parallel, /* .PARALLEL */ 208 ExPath, /* .PATH */ 209 Phony, /* .PHONY */ 210 #ifdef POSIX 211 Posix, /* .POSIX */ 212 #endif 213 Precious, /* .PRECIOUS */ 214 ExShell, /* .SHELL */ 215 Silent, /* .SILENT */ 216 SingleShell, /* .SINGLESHELL */ 217 Stale, /* .STALE */ 218 Suffixes, /* .SUFFIXES */ 219 Wait, /* .WAIT */ 220 Attribute /* Generic attribute */ 221 } ParseSpecial; 222 223 /* 224 * Other tokens 225 */ 226 #define LPAREN '(' 227 #define RPAREN ')' 228 229 230 //////////////////////////////////////////////////////////// 231 // result data 232 233 /* 234 * The main target to create. This is the first target on the first 235 * dependency line in the first makefile. 236 */ 237 static GNode *mainNode; 238 239 //////////////////////////////////////////////////////////// 240 // eval state 241 242 /* targets we're working on */ 243 static Lst targets; 244 245 #ifdef CLEANUP 246 /* command lines for targets */ 247 static Lst targCmds; 248 #endif 249 250 /* 251 * specType contains the SPECial TYPE of the current target. It is 252 * Not if the target is unspecial. If it *is* special, however, the children 253 * are linked as children of the parent but not vice versa. This variable is 254 * set in ParseDoDependency 255 */ 256 static ParseSpecial specType; 257 258 /* 259 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER 260 * seen, then set to each successive source on the line. 261 */ 262 static GNode *predecessor; 263 264 //////////////////////////////////////////////////////////// 265 // parser state 266 267 /* true if currently in a dependency line or its commands */ 268 static Boolean inLine; 269 270 /* number of fatal errors */ 271 static int fatals = 0; 272 273 /* 274 * Variables for doing includes 275 */ 276 277 /* current file being read */ 278 static IFile *curFile; 279 280 /* stack of IFiles generated by .includes */ 281 static Lst includes; 282 283 /* include paths (lists of directories) */ 284 Lst parseIncPath; /* dirs for "..." includes */ 285 Lst sysIncPath; /* dirs for <...> includes */ 286 Lst defIncPath; /* default for sysIncPath */ 287 288 //////////////////////////////////////////////////////////// 289 // parser tables 290 291 /* 292 * The parseKeywords table is searched using binary search when deciding 293 * if a target or source is special. The 'spec' field is the ParseSpecial 294 * type of the keyword ("Not" if the keyword isn't special as a target) while 295 * the 'op' field is the operator to apply to the list of targets if the 296 * keyword is used as a source ("0" if the keyword isn't special as a source) 297 */ 298 static const struct { 299 const char *name; /* Name of keyword */ 300 ParseSpecial spec; /* Type when used as a target */ 301 int op; /* Operator when used as a source */ 302 } parseKeywords[] = { 303 { ".BEGIN", Begin, 0 }, 304 { ".DEFAULT", Default, 0 }, 305 { ".END", End, 0 }, 306 { ".ERROR", dotError, 0 }, 307 { ".EXEC", Attribute, OP_EXEC }, 308 { ".IGNORE", Ignore, OP_IGNORE }, 309 { ".INCLUDES", Includes, 0 }, 310 { ".INTERRUPT", Interrupt, 0 }, 311 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 312 { ".JOIN", Attribute, OP_JOIN }, 313 { ".LIBS", Libs, 0 }, 314 { ".LSTAT", Lstat, OP_LSTAT }, 315 { ".MADE", Attribute, OP_MADE }, 316 { ".MAIN", Main, 0 }, 317 { ".MAKE", Attribute, OP_MAKE }, 318 { ".MAKEFLAGS", MFlags, 0 }, 319 { ".META", Meta, OP_META }, 320 { ".MFLAGS", MFlags, 0 }, 321 { ".NOMETA", NoMeta, OP_NOMETA }, 322 { ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP }, 323 { ".NOPATH", NoPath, OP_NOPATH }, 324 { ".NOTMAIN", Attribute, OP_NOTMAIN }, 325 { ".NOTPARALLEL", NotParallel, 0 }, 326 { ".NO_PARALLEL", NotParallel, 0 }, 327 { ".NULL", Null, 0 }, 328 { ".OBJDIR", ExObjdir, 0 }, 329 { ".OPTIONAL", Attribute, OP_OPTIONAL }, 330 { ".ORDER", Order, 0 }, 331 { ".PARALLEL", Parallel, 0 }, 332 { ".PATH", ExPath, 0 }, 333 { ".PHONY", Phony, OP_PHONY }, 334 #ifdef POSIX 335 { ".POSIX", Posix, 0 }, 336 #endif 337 { ".PRECIOUS", Precious, OP_PRECIOUS }, 338 { ".RECURSIVE", Attribute, OP_MAKE }, 339 { ".SHELL", ExShell, 0 }, 340 { ".SILENT", Silent, OP_SILENT }, 341 { ".SINGLESHELL", SingleShell, 0 }, 342 { ".STALE", Stale, 0 }, 343 { ".SUFFIXES", Suffixes, 0 }, 344 { ".USE", Attribute, OP_USE }, 345 { ".USEBEFORE", Attribute, OP_USEBEFORE }, 346 { ".WAIT", Wait, 0 }, 347 }; 348 349 //////////////////////////////////////////////////////////// 350 // local functions 351 352 static int ParseIsEscaped(const char *, const char *); 353 static void ParseErrorInternal(const char *, size_t, int, const char *, ...) 354 MAKE_ATTR_PRINTFLIKE(4,5); 355 static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list) 356 MAKE_ATTR_PRINTFLIKE(5, 0); 357 static int ParseFindKeyword(const char *); 358 static int ParseLinkSrc(void *, void *); 359 static int ParseDoOp(void *, void *); 360 static void ParseDoSrc(int, const char *); 361 static int ParseFindMain(void *, void *); 362 static int ParseAddDir(void *, void *); 363 static int ParseClearPath(void *, void *); 364 static void ParseDoDependency(char *); 365 static int ParseAddCmd(void *, void *); 366 static void ParseHasCommands(void *); 367 static void ParseDoInclude(char *); 368 static void ParseSetParseFile(const char *); 369 #ifdef SYSVINCLUDE 370 static void ParseTraditionalInclude(char *); 371 #endif 372 #ifdef GMAKEEXPORT 373 static void ParseGmakeExport(char *); 374 #endif 375 static int ParseEOF(void); 376 static char *ParseReadLine(void); 377 static void ParseFinishLine(void); 378 static void ParseMark(GNode *); 379 380 //////////////////////////////////////////////////////////// 381 // file loader 382 383 struct loadedfile { 384 const char *path; /* name, for error reports */ 385 char *buf; /* contents buffer */ 386 size_t len; /* length of contents */ 387 size_t maplen; /* length of mmap area, or 0 */ 388 Boolean used; /* XXX: have we used the data yet */ 389 }; 390 391 /* 392 * Constructor/destructor for loadedfile 393 */ 394 static struct loadedfile * 395 loadedfile_create(const char *path) 396 { 397 struct loadedfile *lf; 398 399 lf = bmake_malloc(sizeof(*lf)); 400 lf->path = (path == NULL ? "(stdin)" : path); 401 lf->buf = NULL; 402 lf->len = 0; 403 lf->maplen = 0; 404 lf->used = FALSE; 405 return lf; 406 } 407 408 static void 409 loadedfile_destroy(struct loadedfile *lf) 410 { 411 if (lf->buf != NULL) { 412 if (lf->maplen > 0) { 413 #ifdef HAVE_MMAP 414 munmap(lf->buf, lf->maplen); 415 #endif 416 } else { 417 free(lf->buf); 418 } 419 } 420 free(lf); 421 } 422 423 /* 424 * nextbuf() operation for loadedfile, as needed by the weird and twisted 425 * logic below. Once that's cleaned up, we can get rid of lf->used... 426 */ 427 static char * 428 loadedfile_nextbuf(void *x, size_t *len) 429 { 430 struct loadedfile *lf = x; 431 432 if (lf->used) { 433 return NULL; 434 } 435 lf->used = TRUE; 436 *len = lf->len; 437 return lf->buf; 438 } 439 440 /* 441 * Try to get the size of a file. 442 */ 443 static ReturnStatus 444 load_getsize(int fd, size_t *ret) 445 { 446 struct stat st; 447 448 if (fstat(fd, &st) < 0) { 449 return FAILURE; 450 } 451 452 if (!S_ISREG(st.st_mode)) { 453 return FAILURE; 454 } 455 456 /* 457 * st_size is an off_t, which is 64 bits signed; *ret is 458 * size_t, which might be 32 bits unsigned or 64 bits 459 * unsigned. Rather than being elaborate, just punt on 460 * files that are more than 2^31 bytes. We should never 461 * see a makefile that size in practice... 462 * 463 * While we're at it reject negative sizes too, just in case. 464 */ 465 if (st.st_size < 0 || st.st_size > 0x7fffffff) { 466 return FAILURE; 467 } 468 469 *ret = (size_t) st.st_size; 470 return SUCCESS; 471 } 472 473 /* 474 * Read in a file. 475 * 476 * Until the path search logic can be moved under here instead of 477 * being in the caller in another source file, we need to have the fd 478 * passed in already open. Bleh. 479 * 480 * If the path is NULL use stdin and (to insure against fd leaks) 481 * assert that the caller passed in -1. 482 */ 483 static struct loadedfile * 484 loadfile(const char *path, int fd) 485 { 486 struct loadedfile *lf; 487 #ifdef HAVE_MMAP 488 long pagesize; 489 #endif 490 ssize_t result; 491 size_t bufpos; 492 493 lf = loadedfile_create(path); 494 495 if (path == NULL) { 496 assert(fd == -1); 497 fd = STDIN_FILENO; 498 } else { 499 #if 0 /* notyet */ 500 fd = open(path, O_RDONLY); 501 if (fd < 0) { 502 ... 503 Error("%s: %s", path, strerror(errno)); 504 exit(1); 505 } 506 #endif 507 } 508 509 #ifdef HAVE_MMAP 510 if (load_getsize(fd, &lf->len) == SUCCESS) { 511 /* found a size, try mmap */ 512 pagesize = sysconf(_SC_PAGESIZE); 513 if (pagesize <= 0) { 514 pagesize = 0x1000; 515 } 516 /* round size up to a page */ 517 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 518 519 /* 520 * XXX hack for dealing with empty files; remove when 521 * we're no longer limited by interfacing to the old 522 * logic elsewhere in this file. 523 */ 524 if (lf->maplen == 0) { 525 lf->maplen = pagesize; 526 } 527 528 /* 529 * FUTURE: remove PROT_WRITE when the parser no longer 530 * needs to scribble on the input. 531 */ 532 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 533 MAP_FILE|MAP_COPY, fd, 0); 534 if (lf->buf != MAP_FAILED) { 535 /* succeeded */ 536 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 537 char *b = malloc(lf->len + 1); 538 b[lf->len] = '\n'; 539 memcpy(b, lf->buf, lf->len++); 540 munmap(lf->buf, lf->maplen); 541 lf->maplen = 0; 542 lf->buf = b; 543 } 544 goto done; 545 } 546 } 547 #endif 548 /* cannot mmap; load the traditional way */ 549 550 lf->maplen = 0; 551 lf->len = 1024; 552 lf->buf = bmake_malloc(lf->len); 553 554 bufpos = 0; 555 while (1) { 556 assert(bufpos <= lf->len); 557 if (bufpos == lf->len) { 558 lf->len *= 2; 559 lf->buf = bmake_realloc(lf->buf, lf->len); 560 } 561 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 562 if (result < 0) { 563 Error("%s: read error: %s", path, strerror(errno)); 564 exit(1); 565 } 566 if (result == 0) { 567 break; 568 } 569 bufpos += result; 570 } 571 assert(bufpos <= lf->len); 572 lf->len = bufpos; 573 574 /* truncate malloc region to actual length (maybe not useful) */ 575 if (lf->len > 0) { 576 lf->buf = bmake_realloc(lf->buf, lf->len); 577 } 578 579 #ifdef HAVE_MMAP 580 done: 581 #endif 582 if (path != NULL) { 583 close(fd); 584 } 585 return lf; 586 } 587 588 //////////////////////////////////////////////////////////// 589 // old code 590 591 /*- 592 *---------------------------------------------------------------------- 593 * ParseIsEscaped -- 594 * Check if the current character is escaped on the current line 595 * 596 * Results: 597 * 0 if the character is not backslash escaped, 1 otherwise 598 * 599 * Side Effects: 600 * None 601 *---------------------------------------------------------------------- 602 */ 603 static int 604 ParseIsEscaped(const char *line, const char *c) 605 { 606 int active = 0; 607 for (;;) { 608 if (line == c) 609 return active; 610 if (*--c != '\\') 611 return active; 612 active = !active; 613 } 614 } 615 616 /*- 617 *---------------------------------------------------------------------- 618 * ParseFindKeyword -- 619 * Look in the table of keywords for one matching the given string. 620 * 621 * Input: 622 * str String to find 623 * 624 * Results: 625 * The index of the keyword, or -1 if it isn't there. 626 * 627 * Side Effects: 628 * None 629 *---------------------------------------------------------------------- 630 */ 631 static int 632 ParseFindKeyword(const char *str) 633 { 634 int start, end, cur; 635 int diff; 636 637 start = 0; 638 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 639 640 do { 641 cur = start + ((end - start) / 2); 642 diff = strcmp(str, parseKeywords[cur].name); 643 644 if (diff == 0) { 645 return (cur); 646 } else if (diff < 0) { 647 end = cur - 1; 648 } else { 649 start = cur + 1; 650 } 651 } while (start <= end); 652 return (-1); 653 } 654 655 /*- 656 * ParseVErrorInternal -- 657 * Error message abort function for parsing. Prints out the context 658 * of the error (line number and file) as well as the message with 659 * two optional arguments. 660 * 661 * Results: 662 * None 663 * 664 * Side Effects: 665 * "fatals" is incremented if the level is PARSE_FATAL. 666 */ 667 /* VARARGS */ 668 static void 669 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 670 const char *fmt, va_list ap) 671 { 672 static Boolean fatal_warning_error_printed = FALSE; 673 674 (void)fprintf(f, "%s: ", progname); 675 676 if (cfname != NULL) { 677 (void)fprintf(f, "\""); 678 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 679 char *cp; 680 const char *dir; 681 682 /* 683 * Nothing is more annoying than not knowing 684 * which Makefile is the culprit. 685 */ 686 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 687 if (dir == NULL || *dir == '\0' || 688 (*dir == '.' && dir[1] == '\0')) 689 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 690 if (dir == NULL) 691 dir = "."; 692 693 (void)fprintf(f, "%s/%s", dir, cfname); 694 } else 695 (void)fprintf(f, "%s", cfname); 696 697 (void)fprintf(f, "\" line %d: ", (int)clineno); 698 } 699 if (type == PARSE_WARNING) 700 (void)fprintf(f, "warning: "); 701 (void)vfprintf(f, fmt, ap); 702 (void)fprintf(f, "\n"); 703 (void)fflush(f); 704 if (type == PARSE_FATAL || parseWarnFatal) 705 fatals += 1; 706 if (parseWarnFatal && !fatal_warning_error_printed) { 707 Error("parsing warnings being treated as errors"); 708 fatal_warning_error_printed = TRUE; 709 } 710 } 711 712 /*- 713 * ParseErrorInternal -- 714 * Error function 715 * 716 * Results: 717 * None 718 * 719 * Side Effects: 720 * None 721 */ 722 /* VARARGS */ 723 static void 724 ParseErrorInternal(const char *cfname, size_t clineno, int type, 725 const char *fmt, ...) 726 { 727 va_list ap; 728 729 va_start(ap, fmt); 730 (void)fflush(stdout); 731 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 732 va_end(ap); 733 734 if (debug_file != stderr && debug_file != stdout) { 735 va_start(ap, fmt); 736 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 737 va_end(ap); 738 } 739 } 740 741 /*- 742 * Parse_Error -- 743 * External interface to ParseErrorInternal; uses the default filename 744 * Line number. 745 * 746 * Results: 747 * None 748 * 749 * Side Effects: 750 * None 751 */ 752 /* VARARGS */ 753 void 754 Parse_Error(int type, const char *fmt, ...) 755 { 756 va_list ap; 757 const char *fname; 758 size_t lineno; 759 760 if (curFile == NULL) { 761 fname = NULL; 762 lineno = 0; 763 } else { 764 fname = curFile->fname; 765 lineno = curFile->lineno; 766 } 767 768 va_start(ap, fmt); 769 (void)fflush(stdout); 770 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 771 va_end(ap); 772 773 if (debug_file != stderr && debug_file != stdout) { 774 va_start(ap, fmt); 775 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 776 va_end(ap); 777 } 778 } 779 780 781 /* 782 * ParseMessage 783 * Parse a .info .warning or .error directive 784 * 785 * The input is the line minus the ".". We substitute 786 * variables, print the message and exit(1) (for .error) or just print 787 * a warning if the directive is malformed. 788 */ 789 static Boolean 790 ParseMessage(char *line) 791 { 792 int mtype; 793 794 switch(*line) { 795 case 'i': 796 mtype = 0; 797 break; 798 case 'w': 799 mtype = PARSE_WARNING; 800 break; 801 case 'e': 802 mtype = PARSE_FATAL; 803 break; 804 default: 805 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 806 return FALSE; 807 } 808 809 while (isalpha((u_char)*line)) 810 line++; 811 if (!isspace((u_char)*line)) 812 return FALSE; /* not for us */ 813 while (isspace((u_char)*line)) 814 line++; 815 816 line = Var_Subst(NULL, line, VAR_CMD, 0); 817 Parse_Error(mtype, "%s", line); 818 free(line); 819 820 if (mtype == PARSE_FATAL) { 821 /* Terminate immediately. */ 822 exit(1); 823 } 824 return TRUE; 825 } 826 827 /*- 828 *--------------------------------------------------------------------- 829 * ParseLinkSrc -- 830 * Link the parent node to its new child. Used in a Lst_ForEach by 831 * ParseDoDependency. If the specType isn't 'Not', the parent 832 * isn't linked as a parent of the child. 833 * 834 * Input: 835 * pgnp The parent node 836 * cgpn The child node 837 * 838 * Results: 839 * Always = 0 840 * 841 * Side Effects: 842 * New elements are added to the parents list of cgn and the 843 * children list of cgn. the unmade field of pgn is updated 844 * to reflect the additional child. 845 *--------------------------------------------------------------------- 846 */ 847 static int 848 ParseLinkSrc(void *pgnp, void *cgnp) 849 { 850 GNode *pgn = (GNode *)pgnp; 851 GNode *cgn = (GNode *)cgnp; 852 853 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 854 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 855 (void)Lst_AtEnd(pgn->children, cgn); 856 if (specType == Not) 857 (void)Lst_AtEnd(cgn->parents, pgn); 858 pgn->unmade += 1; 859 if (DEBUG(PARSE)) { 860 fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name); 861 Targ_PrintNode(pgn, 0); 862 Targ_PrintNode(cgn, 0); 863 } 864 return (0); 865 } 866 867 /*- 868 *--------------------------------------------------------------------- 869 * ParseDoOp -- 870 * Apply the parsed operator to the given target node. Used in a 871 * Lst_ForEach call by ParseDoDependency once all targets have 872 * been found and their operator parsed. If the previous and new 873 * operators are incompatible, a major error is taken. 874 * 875 * Input: 876 * gnp The node to which the operator is to be applied 877 * opp The operator to apply 878 * 879 * Results: 880 * Always 0 881 * 882 * Side Effects: 883 * The type field of the node is altered to reflect any new bits in 884 * the op. 885 *--------------------------------------------------------------------- 886 */ 887 static int 888 ParseDoOp(void *gnp, void *opp) 889 { 890 GNode *gn = (GNode *)gnp; 891 int op = *(int *)opp; 892 /* 893 * If the dependency mask of the operator and the node don't match and 894 * the node has actually had an operator applied to it before, and 895 * the operator actually has some dependency information in it, complain. 896 */ 897 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 898 !OP_NOP(gn->type) && !OP_NOP(op)) 899 { 900 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 901 return (1); 902 } 903 904 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 905 /* 906 * If the node was the object of a :: operator, we need to create a 907 * new instance of it for the children and commands on this dependency 908 * line. The new instance is placed on the 'cohorts' list of the 909 * initial one (note the initial one is not on its own cohorts list) 910 * and the new instance is linked to all parents of the initial 911 * instance. 912 */ 913 GNode *cohort; 914 915 /* 916 * Propagate copied bits to the initial node. They'll be propagated 917 * back to the rest of the cohorts later. 918 */ 919 gn->type |= op & ~OP_OPMASK; 920 921 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 922 if (doing_depend) 923 ParseMark(cohort); 924 /* 925 * Make the cohort invisible as well to avoid duplicating it into 926 * other variables. True, parents of this target won't tend to do 927 * anything with their local variables, but better safe than 928 * sorry. (I think this is pointless now, since the relevant list 929 * traversals will no longer see this node anyway. -mycroft) 930 */ 931 cohort->type = op | OP_INVISIBLE; 932 (void)Lst_AtEnd(gn->cohorts, cohort); 933 cohort->centurion = gn; 934 gn->unmade_cohorts += 1; 935 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 936 gn->unmade_cohorts); 937 } else { 938 /* 939 * We don't want to nuke any previous flags (whatever they were) so we 940 * just OR the new operator into the old 941 */ 942 gn->type |= op; 943 } 944 945 return (0); 946 } 947 948 /*- 949 *--------------------------------------------------------------------- 950 * ParseDoSrc -- 951 * Given the name of a source, figure out if it is an attribute 952 * and apply it to the targets if it is. Else decide if there is 953 * some attribute which should be applied *to* the source because 954 * of some special target and apply it if so. Otherwise, make the 955 * source be a child of the targets in the list 'targets' 956 * 957 * Input: 958 * tOp operator (if any) from special targets 959 * src name of the source to handle 960 * 961 * Results: 962 * None 963 * 964 * Side Effects: 965 * Operator bits may be added to the list of targets or to the source. 966 * The targets may have a new source added to their lists of children. 967 *--------------------------------------------------------------------- 968 */ 969 static void 970 ParseDoSrc(int tOp, const char *src) 971 { 972 GNode *gn = NULL; 973 static int wait_number = 0; 974 char wait_src[16]; 975 976 if (*src == '.' && isupper ((unsigned char)src[1])) { 977 int keywd = ParseFindKeyword(src); 978 if (keywd != -1) { 979 int op = parseKeywords[keywd].op; 980 if (op != 0) { 981 Lst_ForEach(targets, ParseDoOp, &op); 982 return; 983 } 984 if (parseKeywords[keywd].spec == Wait) { 985 /* 986 * We add a .WAIT node in the dependency list. 987 * After any dynamic dependencies (and filename globbing) 988 * have happened, it is given a dependency on the each 989 * previous child back to and previous .WAIT node. 990 * The next child won't be scheduled until the .WAIT node 991 * is built. 992 * We give each .WAIT node a unique name (mainly for diag). 993 */ 994 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 995 gn = Targ_FindNode(wait_src, TARG_NOHASH); 996 if (doing_depend) 997 ParseMark(gn); 998 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 999 Lst_ForEach(targets, ParseLinkSrc, gn); 1000 return; 1001 } 1002 } 1003 } 1004 1005 switch (specType) { 1006 case Main: 1007 /* 1008 * If we have noted the existence of a .MAIN, it means we need 1009 * to add the sources of said target to the list of things 1010 * to create. The string 'src' is likely to be free, so we 1011 * must make a new copy of it. Note that this will only be 1012 * invoked if the user didn't specify a target on the command 1013 * line. This is to allow #ifmake's to succeed, or something... 1014 */ 1015 (void)Lst_AtEnd(create, bmake_strdup(src)); 1016 /* 1017 * Add the name to the .TARGETS variable as well, so the user can 1018 * employ that, if desired. 1019 */ 1020 Var_Append(".TARGETS", src, VAR_GLOBAL); 1021 return; 1022 1023 case Order: 1024 /* 1025 * Create proper predecessor/successor links between the previous 1026 * source and the current one. 1027 */ 1028 gn = Targ_FindNode(src, TARG_CREATE); 1029 if (doing_depend) 1030 ParseMark(gn); 1031 if (predecessor != NULL) { 1032 (void)Lst_AtEnd(predecessor->order_succ, gn); 1033 (void)Lst_AtEnd(gn->order_pred, predecessor); 1034 if (DEBUG(PARSE)) { 1035 fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n", 1036 predecessor->name, gn->name); 1037 Targ_PrintNode(predecessor, 0); 1038 Targ_PrintNode(gn, 0); 1039 } 1040 } 1041 /* 1042 * The current source now becomes the predecessor for the next one. 1043 */ 1044 predecessor = gn; 1045 break; 1046 1047 default: 1048 /* 1049 * If the source is not an attribute, we need to find/create 1050 * a node for it. After that we can apply any operator to it 1051 * from a special target or link it to its parents, as 1052 * appropriate. 1053 * 1054 * In the case of a source that was the object of a :: operator, 1055 * the attribute is applied to all of its instances (as kept in 1056 * the 'cohorts' list of the node) or all the cohorts are linked 1057 * to all the targets. 1058 */ 1059 1060 /* Find/create the 'src' node and attach to all targets */ 1061 gn = Targ_FindNode(src, TARG_CREATE); 1062 if (doing_depend) 1063 ParseMark(gn); 1064 if (tOp) { 1065 gn->type |= tOp; 1066 } else { 1067 Lst_ForEach(targets, ParseLinkSrc, gn); 1068 } 1069 break; 1070 } 1071 } 1072 1073 /*- 1074 *----------------------------------------------------------------------- 1075 * ParseFindMain -- 1076 * Find a real target in the list and set it to be the main one. 1077 * Called by ParseDoDependency when a main target hasn't been found 1078 * yet. 1079 * 1080 * Input: 1081 * gnp Node to examine 1082 * 1083 * Results: 1084 * 0 if main not found yet, 1 if it is. 1085 * 1086 * Side Effects: 1087 * mainNode is changed and Targ_SetMain is called. 1088 * 1089 *----------------------------------------------------------------------- 1090 */ 1091 static int 1092 ParseFindMain(void *gnp, void *dummy) 1093 { 1094 GNode *gn = (GNode *)gnp; 1095 if ((gn->type & OP_NOTARGET) == 0) { 1096 mainNode = gn; 1097 Targ_SetMain(gn); 1098 return (dummy ? 1 : 1); 1099 } else { 1100 return (dummy ? 0 : 0); 1101 } 1102 } 1103 1104 /*- 1105 *----------------------------------------------------------------------- 1106 * ParseAddDir -- 1107 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1108 * 1109 * Results: 1110 * === 0 1111 * 1112 * Side Effects: 1113 * See Dir_AddDir. 1114 * 1115 *----------------------------------------------------------------------- 1116 */ 1117 static int 1118 ParseAddDir(void *path, void *name) 1119 { 1120 (void)Dir_AddDir((Lst) path, (char *)name); 1121 return(0); 1122 } 1123 1124 /*- 1125 *----------------------------------------------------------------------- 1126 * ParseClearPath -- 1127 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1128 * 1129 * Results: 1130 * === 0 1131 * 1132 * Side Effects: 1133 * See Dir_ClearPath 1134 * 1135 *----------------------------------------------------------------------- 1136 */ 1137 static int 1138 ParseClearPath(void *path, void *dummy) 1139 { 1140 Dir_ClearPath((Lst) path); 1141 return(dummy ? 0 : 0); 1142 } 1143 1144 /*- 1145 *--------------------------------------------------------------------- 1146 * ParseDoDependency -- 1147 * Parse the dependency line in line. 1148 * 1149 * Input: 1150 * line the line to parse 1151 * 1152 * Results: 1153 * None 1154 * 1155 * Side Effects: 1156 * The nodes of the sources are linked as children to the nodes of the 1157 * targets. Some nodes may be created. 1158 * 1159 * We parse a dependency line by first extracting words from the line and 1160 * finding nodes in the list of all targets with that name. This is done 1161 * until a character is encountered which is an operator character. Currently 1162 * these are only ! and :. At this point the operator is parsed and the 1163 * pointer into the line advanced until the first source is encountered. 1164 * The parsed operator is applied to each node in the 'targets' list, 1165 * which is where the nodes found for the targets are kept, by means of 1166 * the ParseDoOp function. 1167 * The sources are read in much the same way as the targets were except 1168 * that now they are expanded using the wildcarding scheme of the C-Shell 1169 * and all instances of the resulting words in the list of all targets 1170 * are found. Each of the resulting nodes is then linked to each of the 1171 * targets as one of its children. 1172 * Certain targets are handled specially. These are the ones detailed 1173 * by the specType variable. 1174 * The storing of transformation rules is also taken care of here. 1175 * A target is recognized as a transformation rule by calling 1176 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1177 * from the suffix module via Suff_AddTransform rather than the standard 1178 * Targ_FindNode in the target module. 1179 *--------------------------------------------------------------------- 1180 */ 1181 static void 1182 ParseDoDependency(char *line) 1183 { 1184 char *cp; /* our current position */ 1185 GNode *gn = NULL; /* a general purpose temporary node */ 1186 int op; /* the operator on the line */ 1187 char savec; /* a place to save a character */ 1188 Lst paths; /* List of search paths to alter when parsing 1189 * a list of .PATH targets */ 1190 int tOp; /* operator from special target */ 1191 Lst sources; /* list of archive source names after 1192 * expansion */ 1193 Lst curTargs; /* list of target names to be found and added 1194 * to the targets list */ 1195 char *lstart = line; 1196 1197 if (DEBUG(PARSE)) 1198 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1199 tOp = 0; 1200 1201 specType = Not; 1202 paths = NULL; 1203 1204 curTargs = Lst_Init(FALSE); 1205 1206 do { 1207 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1208 !(isspace((unsigned char)*cp) || 1209 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1210 cp++) { 1211 if (*cp == '$') { 1212 /* 1213 * Must be a dynamic source (would have been expanded 1214 * otherwise), so call the Var module to parse the puppy 1215 * so we can safely advance beyond it...There should be 1216 * no errors in this, as they would have been discovered 1217 * in the initial Var_Subst and we wouldn't be here. 1218 */ 1219 int length; 1220 void *freeIt; 1221 1222 (void)Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt); 1223 if (freeIt) 1224 free(freeIt); 1225 cp += length-1; 1226 } 1227 } 1228 1229 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1230 /* 1231 * Archives must be handled specially to make sure the OP_ARCHV 1232 * flag is set in their 'type' field, for one thing, and because 1233 * things like "archive(file1.o file2.o file3.o)" are permissible. 1234 * Arch_ParseArchive will set 'line' to be the first non-blank 1235 * after the archive-spec. It creates/finds nodes for the members 1236 * and places them on the given list, returning SUCCESS if all 1237 * went well and FAILURE if there was an error in the 1238 * specification. On error, line should remain untouched. 1239 */ 1240 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1241 Parse_Error(PARSE_FATAL, 1242 "Error in archive specification: \"%s\"", line); 1243 goto out; 1244 } else { 1245 continue; 1246 } 1247 } 1248 savec = *cp; 1249 1250 if (!*cp) { 1251 /* 1252 * Ending a dependency line without an operator is a Bozo 1253 * no-no. As a heuristic, this is also often triggered by 1254 * undetected conflicts from cvs/rcs merges. 1255 */ 1256 if ((strncmp(line, "<<<<<<", 6) == 0) || 1257 (strncmp(line, "======", 6) == 0) || 1258 (strncmp(line, ">>>>>>", 6) == 0)) 1259 Parse_Error(PARSE_FATAL, 1260 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1261 else 1262 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1263 : "Need an operator"); 1264 goto out; 1265 } 1266 *cp = '\0'; 1267 1268 /* 1269 * Have a word in line. See if it's a special target and set 1270 * specType to match it. 1271 */ 1272 if (*line == '.' && isupper ((unsigned char)line[1])) { 1273 /* 1274 * See if the target is a special target that must have it 1275 * or its sources handled specially. 1276 */ 1277 int keywd = ParseFindKeyword(line); 1278 if (keywd != -1) { 1279 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1280 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1281 goto out; 1282 } 1283 1284 specType = parseKeywords[keywd].spec; 1285 tOp = parseKeywords[keywd].op; 1286 1287 /* 1288 * Certain special targets have special semantics: 1289 * .PATH Have to set the dirSearchPath 1290 * variable too 1291 * .MAIN Its sources are only used if 1292 * nothing has been specified to 1293 * create. 1294 * .DEFAULT Need to create a node to hang 1295 * commands on, but we don't want 1296 * it in the graph, nor do we want 1297 * it to be the Main Target, so we 1298 * create it, set OP_NOTMAIN and 1299 * add it to the list, setting 1300 * DEFAULT to the new node for 1301 * later use. We claim the node is 1302 * A transformation rule to make 1303 * life easier later, when we'll 1304 * use Make_HandleUse to actually 1305 * apply the .DEFAULT commands. 1306 * .PHONY The list of targets 1307 * .NOPATH Don't search for file in the path 1308 * .STALE 1309 * .BEGIN 1310 * .END 1311 * .ERROR 1312 * .INTERRUPT Are not to be considered the 1313 * main target. 1314 * .NOTPARALLEL Make only one target at a time. 1315 * .SINGLESHELL Create a shell for each command. 1316 * .ORDER Must set initial predecessor to NULL 1317 */ 1318 switch (specType) { 1319 case ExPath: 1320 if (paths == NULL) { 1321 paths = Lst_Init(FALSE); 1322 } 1323 (void)Lst_AtEnd(paths, dirSearchPath); 1324 break; 1325 case Main: 1326 if (!Lst_IsEmpty(create)) { 1327 specType = Not; 1328 } 1329 break; 1330 case Begin: 1331 case End: 1332 case Stale: 1333 case dotError: 1334 case Interrupt: 1335 gn = Targ_FindNode(line, TARG_CREATE); 1336 if (doing_depend) 1337 ParseMark(gn); 1338 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1339 (void)Lst_AtEnd(targets, gn); 1340 break; 1341 case Default: 1342 gn = Targ_NewGN(".DEFAULT"); 1343 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1344 (void)Lst_AtEnd(targets, gn); 1345 DEFAULT = gn; 1346 break; 1347 case NotParallel: 1348 maxJobs = 1; 1349 break; 1350 case SingleShell: 1351 compatMake = TRUE; 1352 break; 1353 case Order: 1354 predecessor = NULL; 1355 break; 1356 default: 1357 break; 1358 } 1359 } else if (strncmp(line, ".PATH", 5) == 0) { 1360 /* 1361 * .PATH<suffix> has to be handled specially. 1362 * Call on the suffix module to give us a path to 1363 * modify. 1364 */ 1365 Lst path; 1366 1367 specType = ExPath; 1368 path = Suff_GetPath(&line[5]); 1369 if (path == NULL) { 1370 Parse_Error(PARSE_FATAL, 1371 "Suffix '%s' not defined (yet)", 1372 &line[5]); 1373 goto out; 1374 } else { 1375 if (paths == NULL) { 1376 paths = Lst_Init(FALSE); 1377 } 1378 (void)Lst_AtEnd(paths, path); 1379 } 1380 } 1381 } 1382 1383 /* 1384 * Have word in line. Get or create its node and stick it at 1385 * the end of the targets list 1386 */ 1387 if ((specType == Not) && (*line != '\0')) { 1388 if (Dir_HasWildcards(line)) { 1389 /* 1390 * Targets are to be sought only in the current directory, 1391 * so create an empty path for the thing. Note we need to 1392 * use Dir_Destroy in the destruction of the path as the 1393 * Dir module could have added a directory to the path... 1394 */ 1395 Lst emptyPath = Lst_Init(FALSE); 1396 1397 Dir_Expand(line, emptyPath, curTargs); 1398 1399 Lst_Destroy(emptyPath, Dir_Destroy); 1400 } else { 1401 /* 1402 * No wildcards, but we want to avoid code duplication, 1403 * so create a list with the word on it. 1404 */ 1405 (void)Lst_AtEnd(curTargs, line); 1406 } 1407 1408 while(!Lst_IsEmpty(curTargs)) { 1409 char *targName = (char *)Lst_DeQueue(curTargs); 1410 1411 if (!Suff_IsTransform (targName)) { 1412 gn = Targ_FindNode(targName, TARG_CREATE); 1413 } else { 1414 gn = Suff_AddTransform(targName); 1415 } 1416 if (doing_depend) 1417 ParseMark(gn); 1418 1419 (void)Lst_AtEnd(targets, gn); 1420 } 1421 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1422 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1423 } 1424 1425 *cp = savec; 1426 /* 1427 * If it is a special type and not .PATH, it's the only target we 1428 * allow on this line... 1429 */ 1430 if (specType != Not && specType != ExPath) { 1431 Boolean warning = FALSE; 1432 1433 while (*cp && (ParseIsEscaped(lstart, cp) || 1434 ((*cp != '!') && (*cp != ':')))) { 1435 if (ParseIsEscaped(lstart, cp) || 1436 (*cp != ' ' && *cp != '\t')) { 1437 warning = TRUE; 1438 } 1439 cp++; 1440 } 1441 if (warning) { 1442 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1443 } 1444 } else { 1445 while (*cp && isspace ((unsigned char)*cp)) { 1446 cp++; 1447 } 1448 } 1449 line = cp; 1450 } while (*line && (ParseIsEscaped(lstart, line) || 1451 ((*line != '!') && (*line != ':')))); 1452 1453 /* 1454 * Don't need the list of target names anymore... 1455 */ 1456 Lst_Destroy(curTargs, NULL); 1457 curTargs = NULL; 1458 1459 if (!Lst_IsEmpty(targets)) { 1460 switch(specType) { 1461 default: 1462 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1463 break; 1464 case Default: 1465 case Stale: 1466 case Begin: 1467 case End: 1468 case dotError: 1469 case Interrupt: 1470 /* 1471 * These four create nodes on which to hang commands, so 1472 * targets shouldn't be empty... 1473 */ 1474 case Not: 1475 /* 1476 * Nothing special here -- targets can be empty if it wants. 1477 */ 1478 break; 1479 } 1480 } 1481 1482 /* 1483 * Have now parsed all the target names. Must parse the operator next. The 1484 * result is left in op . 1485 */ 1486 if (*cp == '!') { 1487 op = OP_FORCE; 1488 } else if (*cp == ':') { 1489 if (cp[1] == ':') { 1490 op = OP_DOUBLEDEP; 1491 cp++; 1492 } else { 1493 op = OP_DEPENDS; 1494 } 1495 } else { 1496 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1497 : "Missing dependency operator"); 1498 goto out; 1499 } 1500 1501 cp++; /* Advance beyond operator */ 1502 1503 Lst_ForEach(targets, ParseDoOp, &op); 1504 1505 /* 1506 * Get to the first source 1507 */ 1508 while (*cp && isspace ((unsigned char)*cp)) { 1509 cp++; 1510 } 1511 line = cp; 1512 1513 /* 1514 * Several special targets take different actions if present with no 1515 * sources: 1516 * a .SUFFIXES line with no sources clears out all old suffixes 1517 * a .PRECIOUS line makes all targets precious 1518 * a .IGNORE line ignores errors for all targets 1519 * a .SILENT line creates silence when making all targets 1520 * a .PATH removes all directories from the search path(s). 1521 */ 1522 if (!*line) { 1523 switch (specType) { 1524 case Suffixes: 1525 Suff_ClearSuffixes(); 1526 break; 1527 case Precious: 1528 allPrecious = TRUE; 1529 break; 1530 case Ignore: 1531 ignoreErrors = TRUE; 1532 break; 1533 case Silent: 1534 beSilent = TRUE; 1535 break; 1536 case ExPath: 1537 Lst_ForEach(paths, ParseClearPath, NULL); 1538 Dir_SetPATH(); 1539 break; 1540 #ifdef POSIX 1541 case Posix: 1542 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1543 break; 1544 #endif 1545 default: 1546 break; 1547 } 1548 } else if (specType == MFlags) { 1549 /* 1550 * Call on functions in main.c to deal with these arguments and 1551 * set the initial character to a null-character so the loop to 1552 * get sources won't get anything 1553 */ 1554 Main_ParseArgLine(line); 1555 *line = '\0'; 1556 } else if (specType == ExShell) { 1557 if (Job_ParseShell(line) != SUCCESS) { 1558 Parse_Error(PARSE_FATAL, "improper shell specification"); 1559 goto out; 1560 } 1561 *line = '\0'; 1562 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1563 *line = '\0'; 1564 } 1565 1566 /* 1567 * NOW GO FOR THE SOURCES 1568 */ 1569 if ((specType == Suffixes) || (specType == ExPath) || 1570 (specType == Includes) || (specType == Libs) || 1571 (specType == Null) || (specType == ExObjdir)) 1572 { 1573 while (*line) { 1574 /* 1575 * If the target was one that doesn't take files as its sources 1576 * but takes something like suffixes, we take each 1577 * space-separated word on the line as a something and deal 1578 * with it accordingly. 1579 * 1580 * If the target was .SUFFIXES, we take each source as a 1581 * suffix and add it to the list of suffixes maintained by the 1582 * Suff module. 1583 * 1584 * If the target was a .PATH, we add the source as a directory 1585 * to search on the search path. 1586 * 1587 * If it was .INCLUDES, the source is taken to be the suffix of 1588 * files which will be #included and whose search path should 1589 * be present in the .INCLUDES variable. 1590 * 1591 * If it was .LIBS, the source is taken to be the suffix of 1592 * files which are considered libraries and whose search path 1593 * should be present in the .LIBS variable. 1594 * 1595 * If it was .NULL, the source is the suffix to use when a file 1596 * has no valid suffix. 1597 * 1598 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1599 * and will cause make to do a new chdir to that path. 1600 */ 1601 while (*cp && !isspace ((unsigned char)*cp)) { 1602 cp++; 1603 } 1604 savec = *cp; 1605 *cp = '\0'; 1606 switch (specType) { 1607 case Suffixes: 1608 Suff_AddSuffix(line, &mainNode); 1609 break; 1610 case ExPath: 1611 Lst_ForEach(paths, ParseAddDir, line); 1612 break; 1613 case Includes: 1614 Suff_AddInclude(line); 1615 break; 1616 case Libs: 1617 Suff_AddLib(line); 1618 break; 1619 case Null: 1620 Suff_SetNull(line); 1621 break; 1622 case ExObjdir: 1623 Main_SetObjdir(line); 1624 break; 1625 default: 1626 break; 1627 } 1628 *cp = savec; 1629 if (savec != '\0') { 1630 cp++; 1631 } 1632 while (*cp && isspace ((unsigned char)*cp)) { 1633 cp++; 1634 } 1635 line = cp; 1636 } 1637 if (paths) { 1638 Lst_Destroy(paths, NULL); 1639 } 1640 if (specType == ExPath) 1641 Dir_SetPATH(); 1642 } else { 1643 while (*line) { 1644 /* 1645 * The targets take real sources, so we must beware of archive 1646 * specifications (i.e. things with left parentheses in them) 1647 * and handle them accordingly. 1648 */ 1649 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1650 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1651 /* 1652 * Only stop for a left parenthesis if it isn't at the 1653 * start of a word (that'll be for variable changes 1654 * later) and isn't preceded by a dollar sign (a dynamic 1655 * source). 1656 */ 1657 break; 1658 } 1659 } 1660 1661 if (*cp == LPAREN) { 1662 sources = Lst_Init(FALSE); 1663 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1664 Parse_Error(PARSE_FATAL, 1665 "Error in source archive spec \"%s\"", line); 1666 goto out; 1667 } 1668 1669 while (!Lst_IsEmpty (sources)) { 1670 gn = (GNode *)Lst_DeQueue(sources); 1671 ParseDoSrc(tOp, gn->name); 1672 } 1673 Lst_Destroy(sources, NULL); 1674 cp = line; 1675 } else { 1676 if (*cp) { 1677 *cp = '\0'; 1678 cp += 1; 1679 } 1680 1681 ParseDoSrc(tOp, line); 1682 } 1683 while (*cp && isspace ((unsigned char)*cp)) { 1684 cp++; 1685 } 1686 line = cp; 1687 } 1688 } 1689 1690 if (mainNode == NULL) { 1691 /* 1692 * If we have yet to decide on a main target to make, in the 1693 * absence of any user input, we want the first target on 1694 * the first dependency line that is actually a real target 1695 * (i.e. isn't a .USE or .EXEC rule) to be made. 1696 */ 1697 Lst_ForEach(targets, ParseFindMain, NULL); 1698 } 1699 1700 out: 1701 if (curTargs) 1702 Lst_Destroy(curTargs, NULL); 1703 } 1704 1705 /*- 1706 *--------------------------------------------------------------------- 1707 * Parse_IsVar -- 1708 * Return TRUE if the passed line is a variable assignment. A variable 1709 * assignment consists of a single word followed by optional whitespace 1710 * followed by either a += or an = operator. 1711 * This function is used both by the Parse_File function and main when 1712 * parsing the command-line arguments. 1713 * 1714 * Input: 1715 * line the line to check 1716 * 1717 * Results: 1718 * TRUE if it is. FALSE if it ain't 1719 * 1720 * Side Effects: 1721 * none 1722 *--------------------------------------------------------------------- 1723 */ 1724 Boolean 1725 Parse_IsVar(char *line) 1726 { 1727 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1728 char ch; 1729 int level = 0; 1730 #define ISEQOPERATOR(c) \ 1731 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1732 1733 /* 1734 * Skip to variable name 1735 */ 1736 for (;(*line == ' ') || (*line == '\t'); line++) 1737 continue; 1738 1739 /* Scan for one of the assignment operators outside a variable expansion */ 1740 while ((ch = *line++) != 0) { 1741 if (ch == '(' || ch == '{') { 1742 level++; 1743 continue; 1744 } 1745 if (ch == ')' || ch == '}') { 1746 level--; 1747 continue; 1748 } 1749 if (level != 0) 1750 continue; 1751 while (ch == ' ' || ch == '\t') { 1752 ch = *line++; 1753 wasSpace = TRUE; 1754 } 1755 #ifdef SUNSHCMD 1756 if (ch == ':' && strncmp(line, "sh", 2) == 0) { 1757 line += 2; 1758 continue; 1759 } 1760 #endif 1761 if (ch == '=') 1762 return TRUE; 1763 if (*line == '=' && ISEQOPERATOR(ch)) 1764 return TRUE; 1765 if (wasSpace) 1766 return FALSE; 1767 } 1768 1769 return FALSE; 1770 } 1771 1772 /*- 1773 *--------------------------------------------------------------------- 1774 * Parse_DoVar -- 1775 * Take the variable assignment in the passed line and do it in the 1776 * global context. 1777 * 1778 * Note: There is a lexical ambiguity with assignment modifier characters 1779 * in variable names. This routine interprets the character before the = 1780 * as a modifier. Therefore, an assignment like 1781 * C++=/usr/bin/CC 1782 * is interpreted as "C+ +=" instead of "C++ =". 1783 * 1784 * Input: 1785 * line a line guaranteed to be a variable assignment. 1786 * This reduces error checks 1787 * ctxt Context in which to do the assignment 1788 * 1789 * Results: 1790 * none 1791 * 1792 * Side Effects: 1793 * the variable structure of the given variable name is altered in the 1794 * global context. 1795 *--------------------------------------------------------------------- 1796 */ 1797 void 1798 Parse_DoVar(char *line, GNode *ctxt) 1799 { 1800 char *cp; /* pointer into line */ 1801 enum { 1802 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1803 } type; /* Type of assignment */ 1804 char *opc; /* ptr to operator character to 1805 * null-terminate the variable name */ 1806 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1807 * i.e. if any variable expansion was 1808 * performed */ 1809 int depth; 1810 1811 /* 1812 * Skip to variable name 1813 */ 1814 while ((*line == ' ') || (*line == '\t')) { 1815 line++; 1816 } 1817 1818 /* 1819 * Skip to operator character, nulling out whitespace as we go 1820 * XXX Rather than counting () and {} we should look for $ and 1821 * then expand the variable. 1822 */ 1823 for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) { 1824 if (*cp == '(' || *cp == '{') { 1825 depth++; 1826 continue; 1827 } 1828 if (*cp == ')' || *cp == '}') { 1829 depth--; 1830 continue; 1831 } 1832 if (depth == 0 && isspace ((unsigned char)*cp)) { 1833 *cp = '\0'; 1834 } 1835 } 1836 opc = cp-1; /* operator is the previous character */ 1837 *cp++ = '\0'; /* nuke the = */ 1838 1839 /* 1840 * Check operator type 1841 */ 1842 switch (*opc) { 1843 case '+': 1844 type = VAR_APPEND; 1845 *opc = '\0'; 1846 break; 1847 1848 case '?': 1849 /* 1850 * If the variable already has a value, we don't do anything. 1851 */ 1852 *opc = '\0'; 1853 if (Var_Exists(line, ctxt)) { 1854 return; 1855 } else { 1856 type = VAR_NORMAL; 1857 } 1858 break; 1859 1860 case ':': 1861 type = VAR_SUBST; 1862 *opc = '\0'; 1863 break; 1864 1865 case '!': 1866 type = VAR_SHELL; 1867 *opc = '\0'; 1868 break; 1869 1870 default: 1871 #ifdef SUNSHCMD 1872 while (opc > line && *opc != ':') 1873 opc--; 1874 1875 if (strncmp(opc, ":sh", 3) == 0) { 1876 type = VAR_SHELL; 1877 *opc = '\0'; 1878 break; 1879 } 1880 #endif 1881 type = VAR_NORMAL; 1882 break; 1883 } 1884 1885 while (isspace ((unsigned char)*cp)) { 1886 cp++; 1887 } 1888 1889 if (type == VAR_APPEND) { 1890 Var_Append(line, cp, ctxt); 1891 } else if (type == VAR_SUBST) { 1892 /* 1893 * Allow variables in the old value to be undefined, but leave their 1894 * invocation alone -- this is done by forcing oldVars to be false. 1895 * XXX: This can cause recursive variables, but that's not hard to do, 1896 * and this allows someone to do something like 1897 * 1898 * CFLAGS = $(.INCLUDES) 1899 * CFLAGS := -I.. $(CFLAGS) 1900 * 1901 * And not get an error. 1902 */ 1903 Boolean oldOldVars = oldVars; 1904 1905 oldVars = FALSE; 1906 1907 /* 1908 * make sure that we set the variable the first time to nothing 1909 * so that it gets substituted! 1910 */ 1911 if (!Var_Exists(line, ctxt)) 1912 Var_Set(line, "", ctxt, 0); 1913 1914 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1915 oldVars = oldOldVars; 1916 freeCp = TRUE; 1917 1918 Var_Set(line, cp, ctxt, 0); 1919 } else if (type == VAR_SHELL) { 1920 char *res; 1921 const char *error; 1922 1923 if (strchr(cp, '$') != NULL) { 1924 /* 1925 * There's a dollar sign in the command, so perform variable 1926 * expansion on the whole thing. The resulting string will need 1927 * freeing when we're done, so set freeCmd to TRUE. 1928 */ 1929 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1930 freeCp = TRUE; 1931 } 1932 1933 res = Cmd_Exec(cp, &error); 1934 Var_Set(line, res, ctxt, 0); 1935 free(res); 1936 1937 if (error) 1938 Parse_Error(PARSE_WARNING, error, cp); 1939 } else { 1940 /* 1941 * Normal assignment -- just do it. 1942 */ 1943 Var_Set(line, cp, ctxt, 0); 1944 } 1945 if (strcmp(line, MAKEOVERRIDES) == 0) 1946 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1947 else if (strcmp(line, ".CURDIR") == 0) { 1948 /* 1949 * Somone is being (too?) clever... 1950 * Let's pretend they know what they are doing and 1951 * re-initialize the 'cur' Path. 1952 */ 1953 Dir_InitCur(cp); 1954 Dir_SetPATH(); 1955 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 1956 Job_SetPrefix(); 1957 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 1958 Var_Export(cp, 0); 1959 } 1960 if (freeCp) 1961 free(cp); 1962 } 1963 1964 1965 /*- 1966 * ParseAddCmd -- 1967 * Lst_ForEach function to add a command line to all targets 1968 * 1969 * Input: 1970 * gnp the node to which the command is to be added 1971 * cmd the command to add 1972 * 1973 * Results: 1974 * Always 0 1975 * 1976 * Side Effects: 1977 * A new element is added to the commands list of the node. 1978 */ 1979 static int 1980 ParseAddCmd(void *gnp, void *cmd) 1981 { 1982 GNode *gn = (GNode *)gnp; 1983 1984 /* Add to last (ie current) cohort for :: targets */ 1985 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 1986 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 1987 1988 /* if target already supplied, ignore commands */ 1989 if (!(gn->type & OP_HAS_COMMANDS)) { 1990 (void)Lst_AtEnd(gn->commands, cmd); 1991 ParseMark(gn); 1992 } else { 1993 #ifdef notyet 1994 /* XXX: We cannot do this until we fix the tree */ 1995 (void)Lst_AtEnd(gn->commands, cmd); 1996 Parse_Error(PARSE_WARNING, 1997 "overriding commands for target \"%s\"; " 1998 "previous commands defined at %s: %d ignored", 1999 gn->name, gn->fname, gn->lineno); 2000 #else 2001 Parse_Error(PARSE_WARNING, 2002 "duplicate script for target \"%s\" ignored", 2003 gn->name); 2004 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 2005 "using previous script for \"%s\" defined here", 2006 gn->name); 2007 #endif 2008 } 2009 return(0); 2010 } 2011 2012 /*- 2013 *----------------------------------------------------------------------- 2014 * ParseHasCommands -- 2015 * Callback procedure for Parse_File when destroying the list of 2016 * targets on the last dependency line. Marks a target as already 2017 * having commands if it does, to keep from having shell commands 2018 * on multiple dependency lines. 2019 * 2020 * Input: 2021 * gnp Node to examine 2022 * 2023 * Results: 2024 * None 2025 * 2026 * Side Effects: 2027 * OP_HAS_COMMANDS may be set for the target. 2028 * 2029 *----------------------------------------------------------------------- 2030 */ 2031 static void 2032 ParseHasCommands(void *gnp) 2033 { 2034 GNode *gn = (GNode *)gnp; 2035 if (!Lst_IsEmpty(gn->commands)) { 2036 gn->type |= OP_HAS_COMMANDS; 2037 } 2038 } 2039 2040 /*- 2041 *----------------------------------------------------------------------- 2042 * Parse_AddIncludeDir -- 2043 * Add a directory to the path searched for included makefiles 2044 * bracketed by double-quotes. Used by functions in main.c 2045 * 2046 * Input: 2047 * dir The name of the directory to add 2048 * 2049 * Results: 2050 * None. 2051 * 2052 * Side Effects: 2053 * The directory is appended to the list. 2054 * 2055 *----------------------------------------------------------------------- 2056 */ 2057 void 2058 Parse_AddIncludeDir(char *dir) 2059 { 2060 (void)Dir_AddDir(parseIncPath, dir); 2061 } 2062 2063 /*- 2064 *--------------------------------------------------------------------- 2065 * ParseDoInclude -- 2066 * Push to another file. 2067 * 2068 * The input is the line minus the `.'. A file spec is a string 2069 * enclosed in <> or "". The former is looked for only in sysIncPath. 2070 * The latter in . and the directories specified by -I command line 2071 * options 2072 * 2073 * Results: 2074 * None 2075 * 2076 * Side Effects: 2077 * A structure is added to the includes Lst and readProc, lineno, 2078 * fname and curFILE are altered for the new file 2079 *--------------------------------------------------------------------- 2080 */ 2081 2082 static void 2083 Parse_include_file(char *file, Boolean isSystem, int silent) 2084 { 2085 struct loadedfile *lf; 2086 char *fullname; /* full pathname of file */ 2087 char *newName; 2088 char *prefEnd, *incdir; 2089 int fd; 2090 int i; 2091 2092 /* 2093 * Now we know the file's name and its search path, we attempt to 2094 * find the durn thing. A return of NULL indicates the file don't 2095 * exist. 2096 */ 2097 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2098 2099 if (fullname == NULL && !isSystem) { 2100 /* 2101 * Include files contained in double-quotes are first searched for 2102 * relative to the including file's location. We don't want to 2103 * cd there, of course, so we just tack on the old file's 2104 * leading path components and call Dir_FindFile to see if 2105 * we can locate the beast. 2106 */ 2107 2108 incdir = bmake_strdup(curFile->fname); 2109 prefEnd = strrchr(incdir, '/'); 2110 if (prefEnd != NULL) { 2111 *prefEnd = '\0'; 2112 /* Now do lexical processing of leading "../" on the filename */ 2113 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2114 prefEnd = strrchr(incdir + 1, '/'); 2115 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2116 break; 2117 *prefEnd = '\0'; 2118 } 2119 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2120 fullname = Dir_FindFile(newName, parseIncPath); 2121 if (fullname == NULL) 2122 fullname = Dir_FindFile(newName, dirSearchPath); 2123 free(newName); 2124 } 2125 free(incdir); 2126 2127 if (fullname == NULL) { 2128 /* 2129 * Makefile wasn't found in same directory as included makefile. 2130 * Search for it first on the -I search path, 2131 * then on the .PATH search path, if not found in a -I directory. 2132 * If we have a suffix specific path we should use that. 2133 */ 2134 char *suff; 2135 Lst suffPath = NULL; 2136 2137 if ((suff = strrchr(file, '.'))) { 2138 suffPath = Suff_GetPath(suff); 2139 if (suffPath != NULL) { 2140 fullname = Dir_FindFile(file, suffPath); 2141 } 2142 } 2143 if (fullname == NULL) { 2144 fullname = Dir_FindFile(file, parseIncPath); 2145 if (fullname == NULL) { 2146 fullname = Dir_FindFile(file, dirSearchPath); 2147 } 2148 } 2149 } 2150 } 2151 2152 /* Looking for a system file or file still not found */ 2153 if (fullname == NULL) { 2154 /* 2155 * Look for it on the system path 2156 */ 2157 fullname = Dir_FindFile(file, 2158 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2159 } 2160 2161 if (fullname == NULL) { 2162 if (!silent) 2163 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2164 return; 2165 } 2166 2167 /* Actually open the file... */ 2168 fd = open(fullname, O_RDONLY); 2169 if (fd == -1) { 2170 if (!silent) 2171 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2172 free(fullname); 2173 return; 2174 } 2175 2176 /* load it */ 2177 lf = loadfile(fullname, fd); 2178 2179 /* Start reading from this file next */ 2180 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2181 curFile->lf = lf; 2182 } 2183 2184 static void 2185 ParseDoInclude(char *line) 2186 { 2187 char endc; /* the character which ends the file spec */ 2188 char *cp; /* current position in file spec */ 2189 int silent = (*line != 'i') ? 1 : 0; 2190 char *file = &line[7 + silent]; 2191 2192 /* Skip to delimiter character so we know where to look */ 2193 while (*file == ' ' || *file == '\t') 2194 file++; 2195 2196 if (*file != '"' && *file != '<') { 2197 Parse_Error(PARSE_FATAL, 2198 ".include filename must be delimited by '\"' or '<'"); 2199 return; 2200 } 2201 2202 /* 2203 * Set the search path on which to find the include file based on the 2204 * characters which bracket its name. Angle-brackets imply it's 2205 * a system Makefile while double-quotes imply it's a user makefile 2206 */ 2207 if (*file == '<') { 2208 endc = '>'; 2209 } else { 2210 endc = '"'; 2211 } 2212 2213 /* Skip to matching delimiter */ 2214 for (cp = ++file; *cp && *cp != endc; cp++) 2215 continue; 2216 2217 if (*cp != endc) { 2218 Parse_Error(PARSE_FATAL, 2219 "Unclosed %cinclude filename. '%c' expected", 2220 '.', endc); 2221 return; 2222 } 2223 *cp = '\0'; 2224 2225 /* 2226 * Substitute for any variables in the file name before trying to 2227 * find the thing. 2228 */ 2229 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2230 2231 Parse_include_file(file, endc == '>', silent); 2232 free(file); 2233 } 2234 2235 2236 /*- 2237 *--------------------------------------------------------------------- 2238 * ParseSetParseFile -- 2239 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2240 * basename of the given filename 2241 * 2242 * Results: 2243 * None 2244 * 2245 * Side Effects: 2246 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2247 * dirname and basename of the given filename. 2248 *--------------------------------------------------------------------- 2249 */ 2250 static void 2251 ParseSetParseFile(const char *filename) 2252 { 2253 char *slash, *dirname; 2254 const char *pd, *pf; 2255 int len; 2256 2257 slash = strrchr(filename, '/'); 2258 if (slash == NULL) { 2259 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2260 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2261 dirname= NULL; 2262 } else { 2263 len = slash - filename; 2264 dirname = bmake_malloc(len + 1); 2265 memcpy(dirname, filename, len); 2266 dirname[len] = '\0'; 2267 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2268 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2269 } 2270 if (DEBUG(PARSE)) 2271 fprintf(debug_file, "ParseSetParseFile: ${.PARSEDIR} = `%s' " 2272 "${.PARSEFILE} = `%s'\n", pd, pf); 2273 free(dirname); 2274 } 2275 2276 /* 2277 * Track the makefiles we read - so makefiles can 2278 * set dependencies on them. 2279 * Avoid adding anything more than once. 2280 */ 2281 2282 static void 2283 ParseTrackInput(const char *name) 2284 { 2285 char *old; 2286 char *fp = NULL; 2287 size_t name_len = strlen(name); 2288 2289 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2290 if (old) { 2291 /* does it contain name? */ 2292 for (; old != NULL; old = strchr(old, ' ')) { 2293 if (*old == ' ') 2294 old++; 2295 if (memcmp(old, name, name_len) == 0 2296 && (old[name_len] == 0 || old[name_len] == ' ')) 2297 goto cleanup; 2298 } 2299 } 2300 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2301 cleanup: 2302 if (fp) { 2303 free(fp); 2304 } 2305 } 2306 2307 2308 /*- 2309 *--------------------------------------------------------------------- 2310 * Parse_setInput -- 2311 * Start Parsing from the given source 2312 * 2313 * Results: 2314 * None 2315 * 2316 * Side Effects: 2317 * A structure is added to the includes Lst and readProc, lineno, 2318 * fname and curFile are altered for the new file 2319 *--------------------------------------------------------------------- 2320 */ 2321 void 2322 Parse_SetInput(const char *name, int line, int fd, 2323 char *(*nextbuf)(void *, size_t *), void *arg) 2324 { 2325 char *buf; 2326 size_t len; 2327 2328 if (name == NULL) 2329 name = curFile->fname; 2330 else 2331 ParseTrackInput(name); 2332 2333 if (DEBUG(PARSE)) 2334 fprintf(debug_file, "Parse_SetInput: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2335 name, line, fd, nextbuf, arg); 2336 2337 if (fd == -1 && nextbuf == NULL) 2338 /* sanity */ 2339 return; 2340 2341 if (curFile != NULL) 2342 /* Save exiting file info */ 2343 Lst_AtFront(includes, curFile); 2344 2345 /* Allocate and fill in new structure */ 2346 curFile = bmake_malloc(sizeof *curFile); 2347 2348 /* 2349 * Once the previous state has been saved, we can get down to reading 2350 * the new file. We set up the name of the file to be the absolute 2351 * name of the include file so error messages refer to the right 2352 * place. 2353 */ 2354 curFile->fname = bmake_strdup(name); 2355 curFile->lineno = line; 2356 curFile->first_lineno = line; 2357 curFile->nextbuf = nextbuf; 2358 curFile->nextbuf_arg = arg; 2359 curFile->lf = NULL; 2360 2361 assert(nextbuf != NULL); 2362 2363 /* Get first block of input data */ 2364 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2365 if (buf == NULL) { 2366 /* Was all a waste of time ... */ 2367 if (curFile->fname) 2368 free(curFile->fname); 2369 free(curFile); 2370 return; 2371 } 2372 curFile->P_str = buf; 2373 curFile->P_ptr = buf; 2374 curFile->P_end = buf+len; 2375 2376 curFile->cond_depth = Cond_save_depth(); 2377 ParseSetParseFile(name); 2378 } 2379 2380 #ifdef SYSVINCLUDE 2381 /*- 2382 *--------------------------------------------------------------------- 2383 * ParseTraditionalInclude -- 2384 * Push to another file. 2385 * 2386 * The input is the current line. The file name(s) are 2387 * following the "include". 2388 * 2389 * Results: 2390 * None 2391 * 2392 * Side Effects: 2393 * A structure is added to the includes Lst and readProc, lineno, 2394 * fname and curFILE are altered for the new file 2395 *--------------------------------------------------------------------- 2396 */ 2397 static void 2398 ParseTraditionalInclude(char *line) 2399 { 2400 char *cp; /* current position in file spec */ 2401 int done = 0; 2402 int silent = (line[0] != 'i') ? 1 : 0; 2403 char *file = &line[silent + 7]; 2404 char *all_files; 2405 2406 if (DEBUG(PARSE)) { 2407 fprintf(debug_file, "ParseTraditionalInclude: %s\n", file); 2408 } 2409 2410 /* 2411 * Skip over whitespace 2412 */ 2413 while (isspace((unsigned char)*file)) 2414 file++; 2415 2416 /* 2417 * Substitute for any variables in the file name before trying to 2418 * find the thing. 2419 */ 2420 all_files = Var_Subst(NULL, file, VAR_CMD, FALSE); 2421 2422 if (*file == '\0') { 2423 Parse_Error(PARSE_FATAL, 2424 "Filename missing from \"include\""); 2425 return; 2426 } 2427 2428 for (file = all_files; !done; file = cp + 1) { 2429 /* Skip to end of line or next whitespace */ 2430 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2431 continue; 2432 2433 if (*cp) 2434 *cp = '\0'; 2435 else 2436 done = 1; 2437 2438 Parse_include_file(file, FALSE, silent); 2439 } 2440 free(all_files); 2441 } 2442 #endif 2443 2444 #ifdef GMAKEEXPORT 2445 /*- 2446 *--------------------------------------------------------------------- 2447 * ParseGmakeExport -- 2448 * Parse export <variable>=<value> 2449 * 2450 * And set the environment with it. 2451 * 2452 * Results: 2453 * None 2454 * 2455 * Side Effects: 2456 * None 2457 *--------------------------------------------------------------------- 2458 */ 2459 static void 2460 ParseGmakeExport(char *line) 2461 { 2462 char *variable = &line[6]; 2463 char *value; 2464 2465 if (DEBUG(PARSE)) { 2466 fprintf(debug_file, "ParseGmakeExport: %s\n", variable); 2467 } 2468 2469 /* 2470 * Skip over whitespace 2471 */ 2472 while (isspace((unsigned char)*variable)) 2473 variable++; 2474 2475 for (value = variable; *value && *value != '='; value++) 2476 continue; 2477 2478 if (*value != '=') { 2479 Parse_Error(PARSE_FATAL, 2480 "Variable/Value missing from \"export\""); 2481 return; 2482 } 2483 *value++ = '\0'; /* terminate variable */ 2484 2485 /* 2486 * Expand the value before putting it in the environment. 2487 */ 2488 value = Var_Subst(NULL, value, VAR_CMD, FALSE); 2489 setenv(variable, value, 1); 2490 } 2491 #endif 2492 2493 /*- 2494 *--------------------------------------------------------------------- 2495 * ParseEOF -- 2496 * Called when EOF is reached in the current file. If we were reading 2497 * an include file, the includes stack is popped and things set up 2498 * to go back to reading the previous file at the previous location. 2499 * 2500 * Results: 2501 * CONTINUE if there's more to do. DONE if not. 2502 * 2503 * Side Effects: 2504 * The old curFILE, is closed. The includes list is shortened. 2505 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2506 *--------------------------------------------------------------------- 2507 */ 2508 static int 2509 ParseEOF(void) 2510 { 2511 char *ptr; 2512 size_t len; 2513 2514 assert(curFile->nextbuf != NULL); 2515 2516 /* get next input buffer, if any */ 2517 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2518 curFile->P_ptr = ptr; 2519 curFile->P_str = ptr; 2520 curFile->P_end = ptr + len; 2521 curFile->lineno = curFile->first_lineno; 2522 if (ptr != NULL) { 2523 /* Iterate again */ 2524 return CONTINUE; 2525 } 2526 2527 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2528 Cond_restore_depth(curFile->cond_depth); 2529 2530 if (curFile->lf != NULL) { 2531 loadedfile_destroy(curFile->lf); 2532 curFile->lf = NULL; 2533 } 2534 2535 /* Dispose of curFile info */ 2536 /* Leak curFile->fname because all the gnodes have pointers to it */ 2537 free(curFile->P_str); 2538 free(curFile); 2539 2540 curFile = Lst_DeQueue(includes); 2541 2542 if (curFile == NULL) { 2543 /* We've run out of input */ 2544 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2545 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2546 return DONE; 2547 } 2548 2549 if (DEBUG(PARSE)) 2550 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2551 curFile->fname, curFile->lineno); 2552 2553 /* Restore the PARSEDIR/PARSEFILE variables */ 2554 ParseSetParseFile(curFile->fname); 2555 return (CONTINUE); 2556 } 2557 2558 #define PARSE_RAW 1 2559 #define PARSE_SKIP 2 2560 2561 static char * 2562 ParseGetLine(int flags, int *length) 2563 { 2564 IFile *cf = curFile; 2565 char *ptr; 2566 char ch; 2567 char *line; 2568 char *line_end; 2569 char *escaped; 2570 char *comment; 2571 char *tp; 2572 2573 /* Loop through blank lines and comment lines */ 2574 for (;;) { 2575 cf->lineno++; 2576 line = cf->P_ptr; 2577 ptr = line; 2578 line_end = line; 2579 escaped = NULL; 2580 comment = NULL; 2581 for (;;) { 2582 if (cf->P_end != NULL && ptr == cf->P_end) { 2583 /* end of buffer */ 2584 ch = 0; 2585 break; 2586 } 2587 ch = *ptr; 2588 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2589 if (cf->P_end == NULL) 2590 /* End of string (aka for loop) data */ 2591 break; 2592 /* see if there is more we can parse */ 2593 while (ptr++ < cf->P_end) { 2594 if ((ch = *ptr) == '\n') { 2595 if (ptr > line && ptr[-1] == '\\') 2596 continue; 2597 Parse_Error(PARSE_WARNING, 2598 "Zero byte read from file, skipping rest of line."); 2599 break; 2600 } 2601 } 2602 if (cf->nextbuf != NULL) { 2603 /* 2604 * End of this buffer; return EOF and outer logic 2605 * will get the next one. (eww) 2606 */ 2607 break; 2608 } 2609 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2610 return NULL; 2611 } 2612 2613 if (ch == '\\') { 2614 /* Don't treat next character as special, remember first one */ 2615 if (escaped == NULL) 2616 escaped = ptr; 2617 if (ptr[1] == '\n') 2618 cf->lineno++; 2619 ptr += 2; 2620 line_end = ptr; 2621 continue; 2622 } 2623 if (ch == '#' && comment == NULL) { 2624 /* Remember first '#' for comment stripping */ 2625 /* Unless previous char was '[', as in modifier :[#] */ 2626 if (!(ptr > line && ptr[-1] == '[')) 2627 comment = line_end; 2628 } 2629 ptr++; 2630 if (ch == '\n') 2631 break; 2632 if (!isspace((unsigned char)ch)) 2633 /* We are not interested in trailing whitespace */ 2634 line_end = ptr; 2635 } 2636 2637 /* Save next 'to be processed' location */ 2638 cf->P_ptr = ptr; 2639 2640 /* Check we have a non-comment, non-blank line */ 2641 if (line_end == line || comment == line) { 2642 if (ch == 0) 2643 /* At end of file */ 2644 return NULL; 2645 /* Parse another line */ 2646 continue; 2647 } 2648 2649 /* We now have a line of data */ 2650 *line_end = 0; 2651 2652 if (flags & PARSE_RAW) { 2653 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2654 *length = line_end - line; 2655 return line; 2656 } 2657 2658 if (flags & PARSE_SKIP) { 2659 /* Completely ignore non-directives */ 2660 if (line[0] != '.') 2661 continue; 2662 /* We could do more of the .else/.elif/.endif checks here */ 2663 } 2664 break; 2665 } 2666 2667 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2668 if (comment != NULL && line[0] != '\t') { 2669 line_end = comment; 2670 *line_end = 0; 2671 } 2672 2673 /* If we didn't see a '\\' then the in-situ data is fine */ 2674 if (escaped == NULL) { 2675 *length = line_end - line; 2676 return line; 2677 } 2678 2679 /* Remove escapes from '\n' and '#' */ 2680 tp = ptr = escaped; 2681 escaped = line; 2682 for (; ; *tp++ = ch) { 2683 ch = *ptr++; 2684 if (ch != '\\') { 2685 if (ch == 0) 2686 break; 2687 continue; 2688 } 2689 2690 ch = *ptr++; 2691 if (ch == 0) { 2692 /* Delete '\\' at end of buffer */ 2693 tp--; 2694 break; 2695 } 2696 2697 if (ch == '#' && line[0] != '\t') 2698 /* Delete '\\' from before '#' on non-command lines */ 2699 continue; 2700 2701 if (ch != '\n') { 2702 /* Leave '\\' in buffer for later */ 2703 *tp++ = '\\'; 2704 /* Make sure we don't delete an escaped ' ' from the line end */ 2705 escaped = tp + 1; 2706 continue; 2707 } 2708 2709 /* Escaped '\n' replace following whitespace with a single ' ' */ 2710 while (ptr[0] == ' ' || ptr[0] == '\t') 2711 ptr++; 2712 ch = ' '; 2713 } 2714 2715 /* Delete any trailing spaces - eg from empty continuations */ 2716 while (tp > escaped && isspace((unsigned char)tp[-1])) 2717 tp--; 2718 2719 *tp = 0; 2720 *length = tp - line; 2721 return line; 2722 } 2723 2724 /*- 2725 *--------------------------------------------------------------------- 2726 * ParseReadLine -- 2727 * Read an entire line from the input file. Called only by Parse_File. 2728 * 2729 * Results: 2730 * A line w/o its newline 2731 * 2732 * Side Effects: 2733 * Only those associated with reading a character 2734 *--------------------------------------------------------------------- 2735 */ 2736 static char * 2737 ParseReadLine(void) 2738 { 2739 char *line; /* Result */ 2740 int lineLength; /* Length of result */ 2741 int lineno; /* Saved line # */ 2742 int rval; 2743 2744 for (;;) { 2745 line = ParseGetLine(0, &lineLength); 2746 if (line == NULL) 2747 return NULL; 2748 2749 if (line[0] != '.') 2750 return line; 2751 2752 /* 2753 * The line might be a conditional. Ask the conditional module 2754 * about it and act accordingly 2755 */ 2756 switch (Cond_Eval(line)) { 2757 case COND_SKIP: 2758 /* Skip to next conditional that evaluates to COND_PARSE. */ 2759 do { 2760 line = ParseGetLine(PARSE_SKIP, &lineLength); 2761 } while (line && Cond_Eval(line) != COND_PARSE); 2762 if (line == NULL) 2763 break; 2764 continue; 2765 case COND_PARSE: 2766 continue; 2767 case COND_INVALID: /* Not a conditional line */ 2768 /* Check for .for loops */ 2769 rval = For_Eval(line); 2770 if (rval == 0) 2771 /* Not a .for line */ 2772 break; 2773 if (rval < 0) 2774 /* Syntax error - error printed, ignore line */ 2775 continue; 2776 /* Start of a .for loop */ 2777 lineno = curFile->lineno; 2778 /* Accumulate loop lines until matching .endfor */ 2779 do { 2780 line = ParseGetLine(PARSE_RAW, &lineLength); 2781 if (line == NULL) { 2782 Parse_Error(PARSE_FATAL, 2783 "Unexpected end of file in for loop."); 2784 break; 2785 } 2786 } while (For_Accum(line)); 2787 /* Stash each iteration as a new 'input file' */ 2788 For_Run(lineno); 2789 /* Read next line from for-loop buffer */ 2790 continue; 2791 } 2792 return (line); 2793 } 2794 } 2795 2796 /*- 2797 *----------------------------------------------------------------------- 2798 * ParseFinishLine -- 2799 * Handle the end of a dependency group. 2800 * 2801 * Results: 2802 * Nothing. 2803 * 2804 * Side Effects: 2805 * inLine set FALSE. 'targets' list destroyed. 2806 * 2807 *----------------------------------------------------------------------- 2808 */ 2809 static void 2810 ParseFinishLine(void) 2811 { 2812 if (inLine) { 2813 Lst_ForEach(targets, Suff_EndTransform, NULL); 2814 Lst_Destroy(targets, ParseHasCommands); 2815 targets = NULL; 2816 inLine = FALSE; 2817 } 2818 } 2819 2820 2821 /*- 2822 *--------------------------------------------------------------------- 2823 * Parse_File -- 2824 * Parse a file into its component parts, incorporating it into the 2825 * current dependency graph. This is the main function and controls 2826 * almost every other function in this module 2827 * 2828 * Input: 2829 * name the name of the file being read 2830 * fd Open file to makefile to parse 2831 * 2832 * Results: 2833 * None 2834 * 2835 * Side Effects: 2836 * closes fd. 2837 * Loads. Nodes are added to the list of all targets, nodes and links 2838 * are added to the dependency graph. etc. etc. etc. 2839 *--------------------------------------------------------------------- 2840 */ 2841 void 2842 Parse_File(const char *name, int fd) 2843 { 2844 char *cp; /* pointer into the line */ 2845 char *line; /* the line we're working on */ 2846 struct loadedfile *lf; 2847 2848 lf = loadfile(name, fd); 2849 2850 inLine = FALSE; 2851 fatals = 0; 2852 2853 if (name == NULL) { 2854 name = "(stdin)"; 2855 } 2856 2857 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2858 curFile->lf = lf; 2859 2860 do { 2861 for (; (line = ParseReadLine()) != NULL; ) { 2862 if (DEBUG(PARSE)) 2863 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2864 curFile->lineno, line); 2865 if (*line == '.') { 2866 /* 2867 * Lines that begin with the special character may be 2868 * include or undef directives. 2869 * On the other hand they can be suffix rules (.c.o: ...) 2870 * or just dependencies for filenames that start '.'. 2871 */ 2872 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 2873 continue; 2874 } 2875 if (strncmp(cp, "include", 7) == 0 || 2876 ((cp[0] == 's' || cp[0] == '-') && 2877 strncmp(&cp[1], "include", 7) == 0)) { 2878 ParseDoInclude(cp); 2879 continue; 2880 } 2881 if (strncmp(cp, "undef", 5) == 0) { 2882 char *cp2; 2883 for (cp += 5; isspace((unsigned char) *cp); cp++) 2884 continue; 2885 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2886 (*cp2 != '\0'); cp2++) 2887 continue; 2888 *cp2 = '\0'; 2889 Var_Delete(cp, VAR_GLOBAL); 2890 continue; 2891 } else if (strncmp(cp, "export", 6) == 0) { 2892 for (cp += 6; isspace((unsigned char) *cp); cp++) 2893 continue; 2894 Var_Export(cp, 1); 2895 continue; 2896 } else if (strncmp(cp, "unexport", 8) == 0) { 2897 Var_UnExport(cp); 2898 continue; 2899 } else if (strncmp(cp, "info", 4) == 0 || 2900 strncmp(cp, "error", 5) == 0 || 2901 strncmp(cp, "warning", 7) == 0) { 2902 if (ParseMessage(cp)) 2903 continue; 2904 } 2905 } 2906 2907 if (*line == '\t') { 2908 /* 2909 * If a line starts with a tab, it can only hope to be 2910 * a creation command. 2911 */ 2912 cp = line + 1; 2913 shellCommand: 2914 for (; isspace ((unsigned char)*cp); cp++) { 2915 continue; 2916 } 2917 if (*cp) { 2918 if (!inLine) 2919 Parse_Error(PARSE_FATAL, 2920 "Unassociated shell command \"%s\"", 2921 cp); 2922 /* 2923 * So long as it's not a blank line and we're actually 2924 * in a dependency spec, add the command to the list of 2925 * commands of all targets in the dependency spec 2926 */ 2927 if (targets) { 2928 cp = bmake_strdup(cp); 2929 Lst_ForEach(targets, ParseAddCmd, cp); 2930 #ifdef CLEANUP 2931 Lst_AtEnd(targCmds, cp); 2932 #endif 2933 } 2934 } 2935 continue; 2936 } 2937 2938 #ifdef SYSVINCLUDE 2939 if (((strncmp(line, "include", 7) == 0 && 2940 isspace((unsigned char) line[7])) || 2941 ((line[0] == 's' || line[0] == '-') && 2942 strncmp(&line[1], "include", 7) == 0 && 2943 isspace((unsigned char) line[8]))) && 2944 strchr(line, ':') == NULL) { 2945 /* 2946 * It's an S3/S5-style "include". 2947 */ 2948 ParseTraditionalInclude(line); 2949 continue; 2950 } 2951 #endif 2952 #ifdef GMAKEEXPORT 2953 if (strncmp(line, "export", 6) == 0 && 2954 isspace((unsigned char) line[6]) && 2955 strchr(line, ':') == NULL) { 2956 /* 2957 * It's a Gmake "export". 2958 */ 2959 ParseGmakeExport(line); 2960 continue; 2961 } 2962 #endif 2963 if (Parse_IsVar(line)) { 2964 ParseFinishLine(); 2965 Parse_DoVar(line, VAR_GLOBAL); 2966 continue; 2967 } 2968 2969 #ifndef POSIX 2970 /* 2971 * To make life easier on novices, if the line is indented we 2972 * first make sure the line has a dependency operator in it. 2973 * If it doesn't have an operator and we're in a dependency 2974 * line's script, we assume it's actually a shell command 2975 * and add it to the current list of targets. 2976 */ 2977 cp = line; 2978 if (isspace((unsigned char) line[0])) { 2979 while ((*cp != '\0') && isspace((unsigned char) *cp)) 2980 cp++; 2981 while (*cp && (ParseIsEscaped(line, cp) || 2982 (*cp != ':') && (*cp != '!'))) { 2983 cp++; 2984 } 2985 if (*cp == '\0') { 2986 if (inLine) { 2987 Parse_Error(PARSE_WARNING, 2988 "Shell command needs a leading tab"); 2989 goto shellCommand; 2990 } 2991 } 2992 } 2993 #endif 2994 ParseFinishLine(); 2995 2996 /* 2997 * For some reason - probably to make the parser impossible - 2998 * a ';' can be used to separate commands from dependencies. 2999 * Attempt to avoid ';' inside substitution patterns. 3000 */ 3001 { 3002 int level = 0; 3003 3004 for (cp = line; *cp != 0; cp++) { 3005 if (*cp == '\\' && cp[1] != 0) { 3006 cp++; 3007 continue; 3008 } 3009 if (*cp == '$' && 3010 (cp[1] == '(' || cp[1] == '{')) { 3011 level++; 3012 continue; 3013 } 3014 if (level > 0) { 3015 if (*cp == ')' || *cp == '}') { 3016 level--; 3017 continue; 3018 } 3019 } else if (*cp == ';') { 3020 break; 3021 } 3022 } 3023 } 3024 if (*cp != 0) 3025 /* Terminate the dependency list at the ';' */ 3026 *cp++ = 0; 3027 else 3028 cp = NULL; 3029 3030 /* 3031 * We now know it's a dependency line so it needs to have all 3032 * variables expanded before being parsed. Tell the variable 3033 * module to complain if some variable is undefined... 3034 */ 3035 line = Var_Subst(NULL, line, VAR_CMD, TRUE); 3036 3037 /* 3038 * Need a non-circular list for the target nodes 3039 */ 3040 if (targets) 3041 Lst_Destroy(targets, NULL); 3042 3043 targets = Lst_Init(FALSE); 3044 inLine = TRUE; 3045 3046 ParseDoDependency(line); 3047 free(line); 3048 3049 /* If there were commands after a ';', add them now */ 3050 if (cp != NULL) { 3051 goto shellCommand; 3052 } 3053 } 3054 /* 3055 * Reached EOF, but it may be just EOF of an include file... 3056 */ 3057 } while (ParseEOF() == CONTINUE); 3058 3059 if (fatals) { 3060 (void)fflush(stdout); 3061 (void)fprintf(stderr, 3062 "%s: Fatal errors encountered -- cannot continue", 3063 progname); 3064 PrintOnError(NULL, NULL); 3065 exit(1); 3066 } 3067 } 3068 3069 /*- 3070 *--------------------------------------------------------------------- 3071 * Parse_Init -- 3072 * initialize the parsing module 3073 * 3074 * Results: 3075 * none 3076 * 3077 * Side Effects: 3078 * the parseIncPath list is initialized... 3079 *--------------------------------------------------------------------- 3080 */ 3081 void 3082 Parse_Init(void) 3083 { 3084 mainNode = NULL; 3085 parseIncPath = Lst_Init(FALSE); 3086 sysIncPath = Lst_Init(FALSE); 3087 defIncPath = Lst_Init(FALSE); 3088 includes = Lst_Init(FALSE); 3089 #ifdef CLEANUP 3090 targCmds = Lst_Init(FALSE); 3091 #endif 3092 } 3093 3094 void 3095 Parse_End(void) 3096 { 3097 #ifdef CLEANUP 3098 Lst_Destroy(targCmds, (FreeProc *)free); 3099 if (targets) 3100 Lst_Destroy(targets, NULL); 3101 Lst_Destroy(defIncPath, Dir_Destroy); 3102 Lst_Destroy(sysIncPath, Dir_Destroy); 3103 Lst_Destroy(parseIncPath, Dir_Destroy); 3104 Lst_Destroy(includes, NULL); /* Should be empty now */ 3105 #endif 3106 } 3107 3108 3109 /*- 3110 *----------------------------------------------------------------------- 3111 * Parse_MainName -- 3112 * Return a Lst of the main target to create for main()'s sake. If 3113 * no such target exists, we Punt with an obnoxious error message. 3114 * 3115 * Results: 3116 * A Lst of the single node to create. 3117 * 3118 * Side Effects: 3119 * None. 3120 * 3121 *----------------------------------------------------------------------- 3122 */ 3123 Lst 3124 Parse_MainName(void) 3125 { 3126 Lst mainList; /* result list */ 3127 3128 mainList = Lst_Init(FALSE); 3129 3130 if (mainNode == NULL) { 3131 Punt("no target to make."); 3132 /*NOTREACHED*/ 3133 } else if (mainNode->type & OP_DOUBLEDEP) { 3134 (void)Lst_AtEnd(mainList, mainNode); 3135 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3136 } 3137 else 3138 (void)Lst_AtEnd(mainList, mainNode); 3139 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3140 return (mainList); 3141 } 3142 3143 /*- 3144 *----------------------------------------------------------------------- 3145 * ParseMark -- 3146 * Add the filename and lineno to the GNode so that we remember 3147 * where it was first defined. 3148 * 3149 * Side Effects: 3150 * None. 3151 * 3152 *----------------------------------------------------------------------- 3153 */ 3154 static void 3155 ParseMark(GNode *gn) 3156 { 3157 gn->fname = curFile->fname; 3158 gn->lineno = curFile->lineno; 3159 } 3160