parse.c revision 1.195
1 /* $NetBSD: parse.c,v 1.195 2014/07/16 15:33:41 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 1.195 2014/07/16 15:33:41 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 1.195 2014/07/16 15:33:41 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/mman.h> 128 #include <sys/stat.h> 129 #include <assert.h> 130 #include <ctype.h> 131 #include <errno.h> 132 #include <fcntl.h> 133 #include <stdarg.h> 134 #include <stdio.h> 135 136 #ifndef MAP_FILE 137 #define MAP_FILE 0 138 #endif 139 #ifndef MAP_COPY 140 #define MAP_COPY MAP_PRIVATE 141 #endif 142 143 #include "make.h" 144 #include "hash.h" 145 #include "dir.h" 146 #include "job.h" 147 #include "buf.h" 148 #include "pathnames.h" 149 150 //////////////////////////////////////////////////////////// 151 // types and constants 152 153 /* 154 * Structure for a file being read ("included file") 155 */ 156 typedef struct IFile { 157 char *fname; /* name of file */ 158 int lineno; /* current line number in file */ 159 int first_lineno; /* line number of start of text */ 160 int cond_depth; /* 'if' nesting when file opened */ 161 char *P_str; /* point to base of string buffer */ 162 char *P_ptr; /* point to next char of string buffer */ 163 char *P_end; /* point to the end of string buffer */ 164 char *(*nextbuf)(void *, size_t *); /* Function to get more data */ 165 void *nextbuf_arg; /* Opaque arg for nextbuf() */ 166 struct loadedfile *lf; /* loadedfile object, if any */ 167 } IFile; 168 169 170 /* 171 * These values are returned by ParseEOF to tell Parse_File whether to 172 * CONTINUE parsing, i.e. it had only reached the end of an include file, 173 * or if it's DONE. 174 */ 175 #define CONTINUE 1 176 #define DONE 0 177 178 /* 179 * Tokens for target attributes 180 */ 181 typedef enum { 182 Begin, /* .BEGIN */ 183 Default, /* .DEFAULT */ 184 End, /* .END */ 185 dotError, /* .ERROR */ 186 Ignore, /* .IGNORE */ 187 Includes, /* .INCLUDES */ 188 Interrupt, /* .INTERRUPT */ 189 Libs, /* .LIBS */ 190 Meta, /* .META */ 191 MFlags, /* .MFLAGS or .MAKEFLAGS */ 192 Main, /* .MAIN and we don't have anything user-specified to 193 * make */ 194 NoExport, /* .NOEXPORT */ 195 NoMeta, /* .NOMETA */ 196 NoMetaCmp, /* .NOMETA_CMP */ 197 NoPath, /* .NOPATH */ 198 Not, /* Not special */ 199 NotParallel, /* .NOTPARALLEL */ 200 Null, /* .NULL */ 201 ExObjdir, /* .OBJDIR */ 202 Order, /* .ORDER */ 203 Parallel, /* .PARALLEL */ 204 ExPath, /* .PATH */ 205 Phony, /* .PHONY */ 206 #ifdef POSIX 207 Posix, /* .POSIX */ 208 #endif 209 Precious, /* .PRECIOUS */ 210 ExShell, /* .SHELL */ 211 Silent, /* .SILENT */ 212 SingleShell, /* .SINGLESHELL */ 213 Stale, /* .STALE */ 214 Suffixes, /* .SUFFIXES */ 215 Wait, /* .WAIT */ 216 Attribute /* Generic attribute */ 217 } ParseSpecial; 218 219 /* 220 * Other tokens 221 */ 222 #define LPAREN '(' 223 #define RPAREN ')' 224 225 226 //////////////////////////////////////////////////////////// 227 // result data 228 229 /* 230 * The main target to create. This is the first target on the first 231 * dependency line in the first makefile. 232 */ 233 static GNode *mainNode; 234 235 //////////////////////////////////////////////////////////// 236 // eval state 237 238 /* targets we're working on */ 239 static Lst targets; 240 241 #ifdef CLEANUP 242 /* command lines for targets */ 243 static Lst targCmds; 244 #endif 245 246 /* 247 * specType contains the SPECial TYPE of the current target. It is 248 * Not if the target is unspecial. If it *is* special, however, the children 249 * are linked as children of the parent but not vice versa. This variable is 250 * set in ParseDoDependency 251 */ 252 static ParseSpecial specType; 253 254 /* 255 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER 256 * seen, then set to each successive source on the line. 257 */ 258 static GNode *predecessor; 259 260 //////////////////////////////////////////////////////////// 261 // parser state 262 263 /* true if currently in a dependency line or its commands */ 264 static Boolean inLine; 265 266 /* number of fatal errors */ 267 static int fatals = 0; 268 269 /* 270 * Variables for doing includes 271 */ 272 273 /* current file being read */ 274 static IFile *curFile; 275 276 /* stack of IFiles generated by .includes */ 277 static Lst includes; 278 279 /* include paths (lists of directories) */ 280 Lst parseIncPath; /* dirs for "..." includes */ 281 Lst sysIncPath; /* dirs for <...> includes */ 282 Lst defIncPath; /* default for sysIncPath */ 283 284 //////////////////////////////////////////////////////////// 285 // parser tables 286 287 /* 288 * The parseKeywords table is searched using binary search when deciding 289 * if a target or source is special. The 'spec' field is the ParseSpecial 290 * type of the keyword ("Not" if the keyword isn't special as a target) while 291 * the 'op' field is the operator to apply to the list of targets if the 292 * keyword is used as a source ("0" if the keyword isn't special as a source) 293 */ 294 static const struct { 295 const char *name; /* Name of keyword */ 296 ParseSpecial spec; /* Type when used as a target */ 297 int op; /* Operator when used as a source */ 298 } parseKeywords[] = { 299 { ".BEGIN", Begin, 0 }, 300 { ".DEFAULT", Default, 0 }, 301 { ".END", End, 0 }, 302 { ".ERROR", dotError, 0 }, 303 { ".EXEC", Attribute, OP_EXEC }, 304 { ".IGNORE", Ignore, OP_IGNORE }, 305 { ".INCLUDES", Includes, 0 }, 306 { ".INTERRUPT", Interrupt, 0 }, 307 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 308 { ".JOIN", Attribute, OP_JOIN }, 309 { ".LIBS", Libs, 0 }, 310 { ".MADE", Attribute, OP_MADE }, 311 { ".MAIN", Main, 0 }, 312 { ".MAKE", Attribute, OP_MAKE }, 313 { ".MAKEFLAGS", MFlags, 0 }, 314 { ".META", Meta, OP_META }, 315 { ".MFLAGS", MFlags, 0 }, 316 { ".NOMETA", NoMeta, OP_NOMETA }, 317 { ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP }, 318 { ".NOPATH", NoPath, OP_NOPATH }, 319 { ".NOTMAIN", Attribute, OP_NOTMAIN }, 320 { ".NOTPARALLEL", NotParallel, 0 }, 321 { ".NO_PARALLEL", NotParallel, 0 }, 322 { ".NULL", Null, 0 }, 323 { ".OBJDIR", ExObjdir, 0 }, 324 { ".OPTIONAL", Attribute, OP_OPTIONAL }, 325 { ".ORDER", Order, 0 }, 326 { ".PARALLEL", Parallel, 0 }, 327 { ".PATH", ExPath, 0 }, 328 { ".PHONY", Phony, OP_PHONY }, 329 #ifdef POSIX 330 { ".POSIX", Posix, 0 }, 331 #endif 332 { ".PRECIOUS", Precious, OP_PRECIOUS }, 333 { ".RECURSIVE", Attribute, OP_MAKE }, 334 { ".SHELL", ExShell, 0 }, 335 { ".SILENT", Silent, OP_SILENT }, 336 { ".SINGLESHELL", SingleShell, 0 }, 337 { ".STALE", Stale, 0 }, 338 { ".SUFFIXES", Suffixes, 0 }, 339 { ".USE", Attribute, OP_USE }, 340 { ".USEBEFORE", Attribute, OP_USEBEFORE }, 341 { ".WAIT", Wait, 0 }, 342 }; 343 344 //////////////////////////////////////////////////////////// 345 // local functions 346 347 static int ParseIsEscaped(const char *, const char *); 348 static void ParseErrorInternal(const char *, size_t, int, const char *, ...) 349 MAKE_ATTR_PRINTFLIKE(4,5); 350 static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list) 351 MAKE_ATTR_PRINTFLIKE(5, 0); 352 static int ParseFindKeyword(const char *); 353 static int ParseLinkSrc(void *, void *); 354 static int ParseDoOp(void *, void *); 355 static void ParseDoSrc(int, const char *); 356 static int ParseFindMain(void *, void *); 357 static int ParseAddDir(void *, void *); 358 static int ParseClearPath(void *, void *); 359 static void ParseDoDependency(char *); 360 static int ParseAddCmd(void *, void *); 361 static void ParseHasCommands(void *); 362 static void ParseDoInclude(char *); 363 static void ParseSetParseFile(const char *); 364 static void ParseSetIncludedFile(void); 365 #ifdef SYSVINCLUDE 366 static void ParseTraditionalInclude(char *); 367 #endif 368 #ifdef GMAKEEXPORT 369 static void ParseGmakeExport(char *); 370 #endif 371 static int ParseEOF(void); 372 static char *ParseReadLine(void); 373 static void ParseFinishLine(void); 374 static void ParseMark(GNode *); 375 376 //////////////////////////////////////////////////////////// 377 // file loader 378 379 struct loadedfile { 380 const char *path; /* name, for error reports */ 381 char *buf; /* contents buffer */ 382 size_t len; /* length of contents */ 383 size_t maplen; /* length of mmap area, or 0 */ 384 Boolean used; /* XXX: have we used the data yet */ 385 }; 386 387 /* 388 * Constructor/destructor for loadedfile 389 */ 390 static struct loadedfile * 391 loadedfile_create(const char *path) 392 { 393 struct loadedfile *lf; 394 395 lf = bmake_malloc(sizeof(*lf)); 396 lf->path = (path == NULL ? "(stdin)" : path); 397 lf->buf = NULL; 398 lf->len = 0; 399 lf->maplen = 0; 400 lf->used = FALSE; 401 return lf; 402 } 403 404 static void 405 loadedfile_destroy(struct loadedfile *lf) 406 { 407 if (lf->buf != NULL) { 408 if (lf->maplen > 0) { 409 munmap(lf->buf, lf->maplen); 410 } else { 411 free(lf->buf); 412 } 413 } 414 free(lf); 415 } 416 417 /* 418 * nextbuf() operation for loadedfile, as needed by the weird and twisted 419 * logic below. Once that's cleaned up, we can get rid of lf->used... 420 */ 421 static char * 422 loadedfile_nextbuf(void *x, size_t *len) 423 { 424 struct loadedfile *lf = x; 425 426 if (lf->used) { 427 return NULL; 428 } 429 lf->used = TRUE; 430 *len = lf->len; 431 return lf->buf; 432 } 433 434 /* 435 * Try to get the size of a file. 436 */ 437 static ReturnStatus 438 load_getsize(int fd, size_t *ret) 439 { 440 struct stat st; 441 442 if (fstat(fd, &st) < 0) { 443 return FAILURE; 444 } 445 446 if (!S_ISREG(st.st_mode)) { 447 return FAILURE; 448 } 449 450 /* 451 * st_size is an off_t, which is 64 bits signed; *ret is 452 * size_t, which might be 32 bits unsigned or 64 bits 453 * unsigned. Rather than being elaborate, just punt on 454 * files that are more than 2^31 bytes. We should never 455 * see a makefile that size in practice... 456 * 457 * While we're at it reject negative sizes too, just in case. 458 */ 459 if (st.st_size < 0 || st.st_size > 0x7fffffff) { 460 return FAILURE; 461 } 462 463 *ret = (size_t) st.st_size; 464 return SUCCESS; 465 } 466 467 /* 468 * Read in a file. 469 * 470 * Until the path search logic can be moved under here instead of 471 * being in the caller in another source file, we need to have the fd 472 * passed in already open. Bleh. 473 * 474 * If the path is NULL use stdin and (to insure against fd leaks) 475 * assert that the caller passed in -1. 476 */ 477 static struct loadedfile * 478 loadfile(const char *path, int fd) 479 { 480 struct loadedfile *lf; 481 long pagesize; 482 ssize_t result; 483 size_t bufpos; 484 485 lf = loadedfile_create(path); 486 487 if (path == NULL) { 488 assert(fd == -1); 489 fd = STDIN_FILENO; 490 } else { 491 #if 0 /* notyet */ 492 fd = open(path, O_RDONLY); 493 if (fd < 0) { 494 ... 495 Error("%s: %s", path, strerror(errno)); 496 exit(1); 497 } 498 #endif 499 } 500 501 if (load_getsize(fd, &lf->len) == SUCCESS) { 502 /* found a size, try mmap */ 503 pagesize = sysconf(_SC_PAGESIZE); 504 if (pagesize <= 0) { 505 pagesize = 0x1000; 506 } 507 /* round size up to a page */ 508 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 509 510 /* 511 * XXX hack for dealing with empty files; remove when 512 * we're no longer limited by interfacing to the old 513 * logic elsewhere in this file. 514 */ 515 if (lf->maplen == 0) { 516 lf->maplen = pagesize; 517 } 518 519 /* 520 * FUTURE: remove PROT_WRITE when the parser no longer 521 * needs to scribble on the input. 522 */ 523 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 524 MAP_FILE|MAP_COPY, fd, 0); 525 if (lf->buf != MAP_FAILED) { 526 /* succeeded */ 527 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 528 char *b = malloc(lf->len + 1); 529 b[lf->len] = '\n'; 530 memcpy(b, lf->buf, lf->len++); 531 munmap(lf->buf, lf->maplen); 532 lf->maplen = 0; 533 lf->buf = b; 534 } 535 goto done; 536 } 537 } 538 539 /* cannot mmap; load the traditional way */ 540 541 lf->maplen = 0; 542 lf->len = 1024; 543 lf->buf = bmake_malloc(lf->len); 544 545 bufpos = 0; 546 while (1) { 547 assert(bufpos <= lf->len); 548 if (bufpos == lf->len) { 549 lf->len *= 2; 550 lf->buf = bmake_realloc(lf->buf, lf->len); 551 } 552 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 553 if (result < 0) { 554 Error("%s: read error: %s", path, strerror(errno)); 555 exit(1); 556 } 557 if (result == 0) { 558 break; 559 } 560 bufpos += result; 561 } 562 assert(bufpos <= lf->len); 563 lf->len = bufpos; 564 565 /* truncate malloc region to actual length (maybe not useful) */ 566 if (lf->len > 0) { 567 lf->buf = bmake_realloc(lf->buf, lf->len); 568 } 569 570 done: 571 if (path != NULL) { 572 close(fd); 573 } 574 return lf; 575 } 576 577 //////////////////////////////////////////////////////////// 578 // old code 579 580 /*- 581 *---------------------------------------------------------------------- 582 * ParseIsEscaped -- 583 * Check if the current character is escaped on the current line 584 * 585 * Results: 586 * 0 if the character is not backslash escaped, 1 otherwise 587 * 588 * Side Effects: 589 * None 590 *---------------------------------------------------------------------- 591 */ 592 static int 593 ParseIsEscaped(const char *line, const char *c) 594 { 595 int active = 0; 596 for (;;) { 597 if (line == c) 598 return active; 599 if (*--c != '\\') 600 return active; 601 active = !active; 602 } 603 } 604 605 /*- 606 *---------------------------------------------------------------------- 607 * ParseFindKeyword -- 608 * Look in the table of keywords for one matching the given string. 609 * 610 * Input: 611 * str String to find 612 * 613 * Results: 614 * The index of the keyword, or -1 if it isn't there. 615 * 616 * Side Effects: 617 * None 618 *---------------------------------------------------------------------- 619 */ 620 static int 621 ParseFindKeyword(const char *str) 622 { 623 int start, end, cur; 624 int diff; 625 626 start = 0; 627 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 628 629 do { 630 cur = start + ((end - start) / 2); 631 diff = strcmp(str, parseKeywords[cur].name); 632 633 if (diff == 0) { 634 return (cur); 635 } else if (diff < 0) { 636 end = cur - 1; 637 } else { 638 start = cur + 1; 639 } 640 } while (start <= end); 641 return (-1); 642 } 643 644 /*- 645 * ParseVErrorInternal -- 646 * Error message abort function for parsing. Prints out the context 647 * of the error (line number and file) as well as the message with 648 * two optional arguments. 649 * 650 * Results: 651 * None 652 * 653 * Side Effects: 654 * "fatals" is incremented if the level is PARSE_FATAL. 655 */ 656 /* VARARGS */ 657 static void 658 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 659 const char *fmt, va_list ap) 660 { 661 static Boolean fatal_warning_error_printed = FALSE; 662 663 (void)fprintf(f, "%s: ", progname); 664 665 if (cfname != NULL) { 666 (void)fprintf(f, "\""); 667 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 668 char *cp; 669 const char *dir; 670 671 /* 672 * Nothing is more annoying than not knowing 673 * which Makefile is the culprit. 674 */ 675 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 676 if (dir == NULL || *dir == '\0' || 677 (*dir == '.' && dir[1] == '\0')) 678 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 679 if (dir == NULL) 680 dir = "."; 681 682 (void)fprintf(f, "%s/%s", dir, cfname); 683 } else 684 (void)fprintf(f, "%s", cfname); 685 686 (void)fprintf(f, "\" line %d: ", (int)clineno); 687 } 688 if (type == PARSE_WARNING) 689 (void)fprintf(f, "warning: "); 690 (void)vfprintf(f, fmt, ap); 691 (void)fprintf(f, "\n"); 692 (void)fflush(f); 693 if (type == PARSE_FATAL || parseWarnFatal) 694 fatals += 1; 695 if (parseWarnFatal && !fatal_warning_error_printed) { 696 Error("parsing warnings being treated as errors"); 697 fatal_warning_error_printed = TRUE; 698 } 699 } 700 701 /*- 702 * ParseErrorInternal -- 703 * Error function 704 * 705 * Results: 706 * None 707 * 708 * Side Effects: 709 * None 710 */ 711 /* VARARGS */ 712 static void 713 ParseErrorInternal(const char *cfname, size_t clineno, int type, 714 const char *fmt, ...) 715 { 716 va_list ap; 717 718 va_start(ap, fmt); 719 (void)fflush(stdout); 720 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 721 va_end(ap); 722 723 if (debug_file != stderr && debug_file != stdout) { 724 va_start(ap, fmt); 725 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 726 va_end(ap); 727 } 728 } 729 730 /*- 731 * Parse_Error -- 732 * External interface to ParseErrorInternal; uses the default filename 733 * Line number. 734 * 735 * Results: 736 * None 737 * 738 * Side Effects: 739 * None 740 */ 741 /* VARARGS */ 742 void 743 Parse_Error(int type, const char *fmt, ...) 744 { 745 va_list ap; 746 const char *fname; 747 size_t lineno; 748 749 if (curFile == NULL) { 750 fname = NULL; 751 lineno = 0; 752 } else { 753 fname = curFile->fname; 754 lineno = curFile->lineno; 755 } 756 757 va_start(ap, fmt); 758 (void)fflush(stdout); 759 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 760 va_end(ap); 761 762 if (debug_file != stderr && debug_file != stdout) { 763 va_start(ap, fmt); 764 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 765 va_end(ap); 766 } 767 } 768 769 770 /* 771 * ParseMessage 772 * Parse a .info .warning or .error directive 773 * 774 * The input is the line minus the ".". We substitute 775 * variables, print the message and exit(1) (for .error) or just print 776 * a warning if the directive is malformed. 777 */ 778 static Boolean 779 ParseMessage(char *line) 780 { 781 int mtype; 782 783 switch(*line) { 784 case 'i': 785 mtype = 0; 786 break; 787 case 'w': 788 mtype = PARSE_WARNING; 789 break; 790 case 'e': 791 mtype = PARSE_FATAL; 792 break; 793 default: 794 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 795 return FALSE; 796 } 797 798 while (isalpha((u_char)*line)) 799 line++; 800 if (!isspace((u_char)*line)) 801 return FALSE; /* not for us */ 802 while (isspace((u_char)*line)) 803 line++; 804 805 line = Var_Subst(NULL, line, VAR_CMD, 0); 806 Parse_Error(mtype, "%s", line); 807 free(line); 808 809 if (mtype == PARSE_FATAL) { 810 /* Terminate immediately. */ 811 exit(1); 812 } 813 return TRUE; 814 } 815 816 /*- 817 *--------------------------------------------------------------------- 818 * ParseLinkSrc -- 819 * Link the parent node to its new child. Used in a Lst_ForEach by 820 * ParseDoDependency. If the specType isn't 'Not', the parent 821 * isn't linked as a parent of the child. 822 * 823 * Input: 824 * pgnp The parent node 825 * cgpn The child node 826 * 827 * Results: 828 * Always = 0 829 * 830 * Side Effects: 831 * New elements are added to the parents list of cgn and the 832 * children list of cgn. the unmade field of pgn is updated 833 * to reflect the additional child. 834 *--------------------------------------------------------------------- 835 */ 836 static int 837 ParseLinkSrc(void *pgnp, void *cgnp) 838 { 839 GNode *pgn = (GNode *)pgnp; 840 GNode *cgn = (GNode *)cgnp; 841 842 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 843 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 844 (void)Lst_AtEnd(pgn->children, cgn); 845 if (specType == Not) 846 (void)Lst_AtEnd(cgn->parents, pgn); 847 pgn->unmade += 1; 848 if (DEBUG(PARSE)) { 849 fprintf(debug_file, "# %s: added child %s - %s\n", __func__, 850 pgn->name, cgn->name); 851 Targ_PrintNode(pgn, 0); 852 Targ_PrintNode(cgn, 0); 853 } 854 return (0); 855 } 856 857 /*- 858 *--------------------------------------------------------------------- 859 * ParseDoOp -- 860 * Apply the parsed operator to the given target node. Used in a 861 * Lst_ForEach call by ParseDoDependency once all targets have 862 * been found and their operator parsed. If the previous and new 863 * operators are incompatible, a major error is taken. 864 * 865 * Input: 866 * gnp The node to which the operator is to be applied 867 * opp The operator to apply 868 * 869 * Results: 870 * Always 0 871 * 872 * Side Effects: 873 * The type field of the node is altered to reflect any new bits in 874 * the op. 875 *--------------------------------------------------------------------- 876 */ 877 static int 878 ParseDoOp(void *gnp, void *opp) 879 { 880 GNode *gn = (GNode *)gnp; 881 int op = *(int *)opp; 882 /* 883 * If the dependency mask of the operator and the node don't match and 884 * the node has actually had an operator applied to it before, and 885 * the operator actually has some dependency information in it, complain. 886 */ 887 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 888 !OP_NOP(gn->type) && !OP_NOP(op)) 889 { 890 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 891 return (1); 892 } 893 894 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 895 /* 896 * If the node was the object of a :: operator, we need to create a 897 * new instance of it for the children and commands on this dependency 898 * line. The new instance is placed on the 'cohorts' list of the 899 * initial one (note the initial one is not on its own cohorts list) 900 * and the new instance is linked to all parents of the initial 901 * instance. 902 */ 903 GNode *cohort; 904 905 /* 906 * Propagate copied bits to the initial node. They'll be propagated 907 * back to the rest of the cohorts later. 908 */ 909 gn->type |= op & ~OP_OPMASK; 910 911 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 912 if (doing_depend) 913 ParseMark(cohort); 914 /* 915 * Make the cohort invisible as well to avoid duplicating it into 916 * other variables. True, parents of this target won't tend to do 917 * anything with their local variables, but better safe than 918 * sorry. (I think this is pointless now, since the relevant list 919 * traversals will no longer see this node anyway. -mycroft) 920 */ 921 cohort->type = op | OP_INVISIBLE; 922 (void)Lst_AtEnd(gn->cohorts, cohort); 923 cohort->centurion = gn; 924 gn->unmade_cohorts += 1; 925 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 926 gn->unmade_cohorts); 927 } else { 928 /* 929 * We don't want to nuke any previous flags (whatever they were) so we 930 * just OR the new operator into the old 931 */ 932 gn->type |= op; 933 } 934 935 return (0); 936 } 937 938 /*- 939 *--------------------------------------------------------------------- 940 * ParseDoSrc -- 941 * Given the name of a source, figure out if it is an attribute 942 * and apply it to the targets if it is. Else decide if there is 943 * some attribute which should be applied *to* the source because 944 * of some special target and apply it if so. Otherwise, make the 945 * source be a child of the targets in the list 'targets' 946 * 947 * Input: 948 * tOp operator (if any) from special targets 949 * src name of the source to handle 950 * 951 * Results: 952 * None 953 * 954 * Side Effects: 955 * Operator bits may be added to the list of targets or to the source. 956 * The targets may have a new source added to their lists of children. 957 *--------------------------------------------------------------------- 958 */ 959 static void 960 ParseDoSrc(int tOp, const char *src) 961 { 962 GNode *gn = NULL; 963 static int wait_number = 0; 964 char wait_src[16]; 965 966 if (*src == '.' && isupper ((unsigned char)src[1])) { 967 int keywd = ParseFindKeyword(src); 968 if (keywd != -1) { 969 int op = parseKeywords[keywd].op; 970 if (op != 0) { 971 Lst_ForEach(targets, ParseDoOp, &op); 972 return; 973 } 974 if (parseKeywords[keywd].spec == Wait) { 975 /* 976 * We add a .WAIT node in the dependency list. 977 * After any dynamic dependencies (and filename globbing) 978 * have happened, it is given a dependency on the each 979 * previous child back to and previous .WAIT node. 980 * The next child won't be scheduled until the .WAIT node 981 * is built. 982 * We give each .WAIT node a unique name (mainly for diag). 983 */ 984 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 985 gn = Targ_FindNode(wait_src, TARG_NOHASH); 986 if (doing_depend) 987 ParseMark(gn); 988 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 989 Lst_ForEach(targets, ParseLinkSrc, gn); 990 return; 991 } 992 } 993 } 994 995 switch (specType) { 996 case Main: 997 /* 998 * If we have noted the existence of a .MAIN, it means we need 999 * to add the sources of said target to the list of things 1000 * to create. The string 'src' is likely to be free, so we 1001 * must make a new copy of it. Note that this will only be 1002 * invoked if the user didn't specify a target on the command 1003 * line. This is to allow #ifmake's to succeed, or something... 1004 */ 1005 (void)Lst_AtEnd(create, bmake_strdup(src)); 1006 /* 1007 * Add the name to the .TARGETS variable as well, so the user can 1008 * employ that, if desired. 1009 */ 1010 Var_Append(".TARGETS", src, VAR_GLOBAL); 1011 return; 1012 1013 case Order: 1014 /* 1015 * Create proper predecessor/successor links between the previous 1016 * source and the current one. 1017 */ 1018 gn = Targ_FindNode(src, TARG_CREATE); 1019 if (doing_depend) 1020 ParseMark(gn); 1021 if (predecessor != NULL) { 1022 (void)Lst_AtEnd(predecessor->order_succ, gn); 1023 (void)Lst_AtEnd(gn->order_pred, predecessor); 1024 if (DEBUG(PARSE)) { 1025 fprintf(debug_file, "# %s: added Order dependency %s - %s\n", 1026 __func__, predecessor->name, gn->name); 1027 Targ_PrintNode(predecessor, 0); 1028 Targ_PrintNode(gn, 0); 1029 } 1030 } 1031 /* 1032 * The current source now becomes the predecessor for the next one. 1033 */ 1034 predecessor = gn; 1035 break; 1036 1037 default: 1038 /* 1039 * If the source is not an attribute, we need to find/create 1040 * a node for it. After that we can apply any operator to it 1041 * from a special target or link it to its parents, as 1042 * appropriate. 1043 * 1044 * In the case of a source that was the object of a :: operator, 1045 * the attribute is applied to all of its instances (as kept in 1046 * the 'cohorts' list of the node) or all the cohorts are linked 1047 * to all the targets. 1048 */ 1049 1050 /* Find/create the 'src' node and attach to all targets */ 1051 gn = Targ_FindNode(src, TARG_CREATE); 1052 if (doing_depend) 1053 ParseMark(gn); 1054 if (tOp) { 1055 gn->type |= tOp; 1056 } else { 1057 Lst_ForEach(targets, ParseLinkSrc, gn); 1058 } 1059 break; 1060 } 1061 } 1062 1063 /*- 1064 *----------------------------------------------------------------------- 1065 * ParseFindMain -- 1066 * Find a real target in the list and set it to be the main one. 1067 * Called by ParseDoDependency when a main target hasn't been found 1068 * yet. 1069 * 1070 * Input: 1071 * gnp Node to examine 1072 * 1073 * Results: 1074 * 0 if main not found yet, 1 if it is. 1075 * 1076 * Side Effects: 1077 * mainNode is changed and Targ_SetMain is called. 1078 * 1079 *----------------------------------------------------------------------- 1080 */ 1081 static int 1082 ParseFindMain(void *gnp, void *dummy) 1083 { 1084 GNode *gn = (GNode *)gnp; 1085 if ((gn->type & OP_NOTARGET) == 0) { 1086 mainNode = gn; 1087 Targ_SetMain(gn); 1088 return (dummy ? 1 : 1); 1089 } else { 1090 return (dummy ? 0 : 0); 1091 } 1092 } 1093 1094 /*- 1095 *----------------------------------------------------------------------- 1096 * ParseAddDir -- 1097 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1098 * 1099 * Results: 1100 * === 0 1101 * 1102 * Side Effects: 1103 * See Dir_AddDir. 1104 * 1105 *----------------------------------------------------------------------- 1106 */ 1107 static int 1108 ParseAddDir(void *path, void *name) 1109 { 1110 (void)Dir_AddDir((Lst) path, (char *)name); 1111 return(0); 1112 } 1113 1114 /*- 1115 *----------------------------------------------------------------------- 1116 * ParseClearPath -- 1117 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1118 * 1119 * Results: 1120 * === 0 1121 * 1122 * Side Effects: 1123 * See Dir_ClearPath 1124 * 1125 *----------------------------------------------------------------------- 1126 */ 1127 static int 1128 ParseClearPath(void *path, void *dummy) 1129 { 1130 Dir_ClearPath((Lst) path); 1131 return(dummy ? 0 : 0); 1132 } 1133 1134 /*- 1135 *--------------------------------------------------------------------- 1136 * ParseDoDependency -- 1137 * Parse the dependency line in line. 1138 * 1139 * Input: 1140 * line the line to parse 1141 * 1142 * Results: 1143 * None 1144 * 1145 * Side Effects: 1146 * The nodes of the sources are linked as children to the nodes of the 1147 * targets. Some nodes may be created. 1148 * 1149 * We parse a dependency line by first extracting words from the line and 1150 * finding nodes in the list of all targets with that name. This is done 1151 * until a character is encountered which is an operator character. Currently 1152 * these are only ! and :. At this point the operator is parsed and the 1153 * pointer into the line advanced until the first source is encountered. 1154 * The parsed operator is applied to each node in the 'targets' list, 1155 * which is where the nodes found for the targets are kept, by means of 1156 * the ParseDoOp function. 1157 * The sources are read in much the same way as the targets were except 1158 * that now they are expanded using the wildcarding scheme of the C-Shell 1159 * and all instances of the resulting words in the list of all targets 1160 * are found. Each of the resulting nodes is then linked to each of the 1161 * targets as one of its children. 1162 * Certain targets are handled specially. These are the ones detailed 1163 * by the specType variable. 1164 * The storing of transformation rules is also taken care of here. 1165 * A target is recognized as a transformation rule by calling 1166 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1167 * from the suffix module via Suff_AddTransform rather than the standard 1168 * Targ_FindNode in the target module. 1169 *--------------------------------------------------------------------- 1170 */ 1171 static void 1172 ParseDoDependency(char *line) 1173 { 1174 char *cp; /* our current position */ 1175 GNode *gn = NULL; /* a general purpose temporary node */ 1176 int op; /* the operator on the line */ 1177 char savec; /* a place to save a character */ 1178 Lst paths; /* List of search paths to alter when parsing 1179 * a list of .PATH targets */ 1180 int tOp; /* operator from special target */ 1181 Lst sources; /* list of archive source names after 1182 * expansion */ 1183 Lst curTargs; /* list of target names to be found and added 1184 * to the targets list */ 1185 char *lstart = line; 1186 1187 if (DEBUG(PARSE)) 1188 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1189 tOp = 0; 1190 1191 specType = Not; 1192 paths = NULL; 1193 1194 curTargs = Lst_Init(FALSE); 1195 1196 do { 1197 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1198 !(isspace((unsigned char)*cp) || 1199 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1200 cp++) { 1201 if (*cp == '$') { 1202 /* 1203 * Must be a dynamic source (would have been expanded 1204 * otherwise), so call the Var module to parse the puppy 1205 * so we can safely advance beyond it...There should be 1206 * no errors in this, as they would have been discovered 1207 * in the initial Var_Subst and we wouldn't be here. 1208 */ 1209 int length; 1210 void *freeIt; 1211 1212 (void)Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt); 1213 if (freeIt) 1214 free(freeIt); 1215 cp += length-1; 1216 } 1217 } 1218 1219 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1220 /* 1221 * Archives must be handled specially to make sure the OP_ARCHV 1222 * flag is set in their 'type' field, for one thing, and because 1223 * things like "archive(file1.o file2.o file3.o)" are permissible. 1224 * Arch_ParseArchive will set 'line' to be the first non-blank 1225 * after the archive-spec. It creates/finds nodes for the members 1226 * and places them on the given list, returning SUCCESS if all 1227 * went well and FAILURE if there was an error in the 1228 * specification. On error, line should remain untouched. 1229 */ 1230 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1231 Parse_Error(PARSE_FATAL, 1232 "Error in archive specification: \"%s\"", line); 1233 goto out; 1234 } else { 1235 continue; 1236 } 1237 } 1238 savec = *cp; 1239 1240 if (!*cp) { 1241 /* 1242 * Ending a dependency line without an operator is a Bozo 1243 * no-no. As a heuristic, this is also often triggered by 1244 * undetected conflicts from cvs/rcs merges. 1245 */ 1246 if ((strncmp(line, "<<<<<<", 6) == 0) || 1247 (strncmp(line, "======", 6) == 0) || 1248 (strncmp(line, ">>>>>>", 6) == 0)) 1249 Parse_Error(PARSE_FATAL, 1250 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1251 else 1252 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1253 : "Need an operator"); 1254 goto out; 1255 } 1256 *cp = '\0'; 1257 1258 /* 1259 * Have a word in line. See if it's a special target and set 1260 * specType to match it. 1261 */ 1262 if (*line == '.' && isupper ((unsigned char)line[1])) { 1263 /* 1264 * See if the target is a special target that must have it 1265 * or its sources handled specially. 1266 */ 1267 int keywd = ParseFindKeyword(line); 1268 if (keywd != -1) { 1269 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1270 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1271 goto out; 1272 } 1273 1274 specType = parseKeywords[keywd].spec; 1275 tOp = parseKeywords[keywd].op; 1276 1277 /* 1278 * Certain special targets have special semantics: 1279 * .PATH Have to set the dirSearchPath 1280 * variable too 1281 * .MAIN Its sources are only used if 1282 * nothing has been specified to 1283 * create. 1284 * .DEFAULT Need to create a node to hang 1285 * commands on, but we don't want 1286 * it in the graph, nor do we want 1287 * it to be the Main Target, so we 1288 * create it, set OP_NOTMAIN and 1289 * add it to the list, setting 1290 * DEFAULT to the new node for 1291 * later use. We claim the node is 1292 * A transformation rule to make 1293 * life easier later, when we'll 1294 * use Make_HandleUse to actually 1295 * apply the .DEFAULT commands. 1296 * .PHONY The list of targets 1297 * .NOPATH Don't search for file in the path 1298 * .STALE 1299 * .BEGIN 1300 * .END 1301 * .ERROR 1302 * .INTERRUPT Are not to be considered the 1303 * main target. 1304 * .NOTPARALLEL Make only one target at a time. 1305 * .SINGLESHELL Create a shell for each command. 1306 * .ORDER Must set initial predecessor to NULL 1307 */ 1308 switch (specType) { 1309 case ExPath: 1310 if (paths == NULL) { 1311 paths = Lst_Init(FALSE); 1312 } 1313 (void)Lst_AtEnd(paths, dirSearchPath); 1314 break; 1315 case Main: 1316 if (!Lst_IsEmpty(create)) { 1317 specType = Not; 1318 } 1319 break; 1320 case Begin: 1321 case End: 1322 case Stale: 1323 case dotError: 1324 case Interrupt: 1325 gn = Targ_FindNode(line, TARG_CREATE); 1326 if (doing_depend) 1327 ParseMark(gn); 1328 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1329 (void)Lst_AtEnd(targets, gn); 1330 break; 1331 case Default: 1332 gn = Targ_NewGN(".DEFAULT"); 1333 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1334 (void)Lst_AtEnd(targets, gn); 1335 DEFAULT = gn; 1336 break; 1337 case NotParallel: 1338 maxJobs = 1; 1339 break; 1340 case SingleShell: 1341 compatMake = TRUE; 1342 break; 1343 case Order: 1344 predecessor = NULL; 1345 break; 1346 default: 1347 break; 1348 } 1349 } else if (strncmp(line, ".PATH", 5) == 0) { 1350 /* 1351 * .PATH<suffix> has to be handled specially. 1352 * Call on the suffix module to give us a path to 1353 * modify. 1354 */ 1355 Lst path; 1356 1357 specType = ExPath; 1358 path = Suff_GetPath(&line[5]); 1359 if (path == NULL) { 1360 Parse_Error(PARSE_FATAL, 1361 "Suffix '%s' not defined (yet)", 1362 &line[5]); 1363 goto out; 1364 } else { 1365 if (paths == NULL) { 1366 paths = Lst_Init(FALSE); 1367 } 1368 (void)Lst_AtEnd(paths, path); 1369 } 1370 } 1371 } 1372 1373 /* 1374 * Have word in line. Get or create its node and stick it at 1375 * the end of the targets list 1376 */ 1377 if ((specType == Not) && (*line != '\0')) { 1378 if (Dir_HasWildcards(line)) { 1379 /* 1380 * Targets are to be sought only in the current directory, 1381 * so create an empty path for the thing. Note we need to 1382 * use Dir_Destroy in the destruction of the path as the 1383 * Dir module could have added a directory to the path... 1384 */ 1385 Lst emptyPath = Lst_Init(FALSE); 1386 1387 Dir_Expand(line, emptyPath, curTargs); 1388 1389 Lst_Destroy(emptyPath, Dir_Destroy); 1390 } else { 1391 /* 1392 * No wildcards, but we want to avoid code duplication, 1393 * so create a list with the word on it. 1394 */ 1395 (void)Lst_AtEnd(curTargs, line); 1396 } 1397 1398 while(!Lst_IsEmpty(curTargs)) { 1399 char *targName = (char *)Lst_DeQueue(curTargs); 1400 1401 if (!Suff_IsTransform (targName)) { 1402 gn = Targ_FindNode(targName, TARG_CREATE); 1403 } else { 1404 gn = Suff_AddTransform(targName); 1405 } 1406 if (doing_depend) 1407 ParseMark(gn); 1408 1409 (void)Lst_AtEnd(targets, gn); 1410 } 1411 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1412 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1413 } 1414 1415 *cp = savec; 1416 /* 1417 * If it is a special type and not .PATH, it's the only target we 1418 * allow on this line... 1419 */ 1420 if (specType != Not && specType != ExPath) { 1421 Boolean warning = FALSE; 1422 1423 while (*cp && (ParseIsEscaped(lstart, cp) || 1424 ((*cp != '!') && (*cp != ':')))) { 1425 if (ParseIsEscaped(lstart, cp) || 1426 (*cp != ' ' && *cp != '\t')) { 1427 warning = TRUE; 1428 } 1429 cp++; 1430 } 1431 if (warning) { 1432 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1433 } 1434 } else { 1435 while (*cp && isspace ((unsigned char)*cp)) { 1436 cp++; 1437 } 1438 } 1439 line = cp; 1440 } while (*line && (ParseIsEscaped(lstart, line) || 1441 ((*line != '!') && (*line != ':')))); 1442 1443 /* 1444 * Don't need the list of target names anymore... 1445 */ 1446 Lst_Destroy(curTargs, NULL); 1447 curTargs = NULL; 1448 1449 if (!Lst_IsEmpty(targets)) { 1450 switch(specType) { 1451 default: 1452 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1453 break; 1454 case Default: 1455 case Stale: 1456 case Begin: 1457 case End: 1458 case dotError: 1459 case Interrupt: 1460 /* 1461 * These four create nodes on which to hang commands, so 1462 * targets shouldn't be empty... 1463 */ 1464 case Not: 1465 /* 1466 * Nothing special here -- targets can be empty if it wants. 1467 */ 1468 break; 1469 } 1470 } 1471 1472 /* 1473 * Have now parsed all the target names. Must parse the operator next. The 1474 * result is left in op . 1475 */ 1476 if (*cp == '!') { 1477 op = OP_FORCE; 1478 } else if (*cp == ':') { 1479 if (cp[1] == ':') { 1480 op = OP_DOUBLEDEP; 1481 cp++; 1482 } else { 1483 op = OP_DEPENDS; 1484 } 1485 } else { 1486 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1487 : "Missing dependency operator"); 1488 goto out; 1489 } 1490 1491 cp++; /* Advance beyond operator */ 1492 1493 Lst_ForEach(targets, ParseDoOp, &op); 1494 1495 /* 1496 * Get to the first source 1497 */ 1498 while (*cp && isspace ((unsigned char)*cp)) { 1499 cp++; 1500 } 1501 line = cp; 1502 1503 /* 1504 * Several special targets take different actions if present with no 1505 * sources: 1506 * a .SUFFIXES line with no sources clears out all old suffixes 1507 * a .PRECIOUS line makes all targets precious 1508 * a .IGNORE line ignores errors for all targets 1509 * a .SILENT line creates silence when making all targets 1510 * a .PATH removes all directories from the search path(s). 1511 */ 1512 if (!*line) { 1513 switch (specType) { 1514 case Suffixes: 1515 Suff_ClearSuffixes(); 1516 break; 1517 case Precious: 1518 allPrecious = TRUE; 1519 break; 1520 case Ignore: 1521 ignoreErrors = TRUE; 1522 break; 1523 case Silent: 1524 beSilent = TRUE; 1525 break; 1526 case ExPath: 1527 Lst_ForEach(paths, ParseClearPath, NULL); 1528 Dir_SetPATH(); 1529 break; 1530 #ifdef POSIX 1531 case Posix: 1532 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1533 break; 1534 #endif 1535 default: 1536 break; 1537 } 1538 } else if (specType == MFlags) { 1539 /* 1540 * Call on functions in main.c to deal with these arguments and 1541 * set the initial character to a null-character so the loop to 1542 * get sources won't get anything 1543 */ 1544 Main_ParseArgLine(line); 1545 *line = '\0'; 1546 } else if (specType == ExShell) { 1547 if (Job_ParseShell(line) != SUCCESS) { 1548 Parse_Error(PARSE_FATAL, "improper shell specification"); 1549 goto out; 1550 } 1551 *line = '\0'; 1552 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1553 *line = '\0'; 1554 } 1555 1556 /* 1557 * NOW GO FOR THE SOURCES 1558 */ 1559 if ((specType == Suffixes) || (specType == ExPath) || 1560 (specType == Includes) || (specType == Libs) || 1561 (specType == Null) || (specType == ExObjdir)) 1562 { 1563 while (*line) { 1564 /* 1565 * If the target was one that doesn't take files as its sources 1566 * but takes something like suffixes, we take each 1567 * space-separated word on the line as a something and deal 1568 * with it accordingly. 1569 * 1570 * If the target was .SUFFIXES, we take each source as a 1571 * suffix and add it to the list of suffixes maintained by the 1572 * Suff module. 1573 * 1574 * If the target was a .PATH, we add the source as a directory 1575 * to search on the search path. 1576 * 1577 * If it was .INCLUDES, the source is taken to be the suffix of 1578 * files which will be #included and whose search path should 1579 * be present in the .INCLUDES variable. 1580 * 1581 * If it was .LIBS, the source is taken to be the suffix of 1582 * files which are considered libraries and whose search path 1583 * should be present in the .LIBS variable. 1584 * 1585 * If it was .NULL, the source is the suffix to use when a file 1586 * has no valid suffix. 1587 * 1588 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1589 * and will cause make to do a new chdir to that path. 1590 */ 1591 while (*cp && !isspace ((unsigned char)*cp)) { 1592 cp++; 1593 } 1594 savec = *cp; 1595 *cp = '\0'; 1596 switch (specType) { 1597 case Suffixes: 1598 Suff_AddSuffix(line, &mainNode); 1599 break; 1600 case ExPath: 1601 Lst_ForEach(paths, ParseAddDir, line); 1602 break; 1603 case Includes: 1604 Suff_AddInclude(line); 1605 break; 1606 case Libs: 1607 Suff_AddLib(line); 1608 break; 1609 case Null: 1610 Suff_SetNull(line); 1611 break; 1612 case ExObjdir: 1613 Main_SetObjdir(line); 1614 break; 1615 default: 1616 break; 1617 } 1618 *cp = savec; 1619 if (savec != '\0') { 1620 cp++; 1621 } 1622 while (*cp && isspace ((unsigned char)*cp)) { 1623 cp++; 1624 } 1625 line = cp; 1626 } 1627 if (paths) { 1628 Lst_Destroy(paths, NULL); 1629 } 1630 if (specType == ExPath) 1631 Dir_SetPATH(); 1632 } else { 1633 while (*line) { 1634 /* 1635 * The targets take real sources, so we must beware of archive 1636 * specifications (i.e. things with left parentheses in them) 1637 * and handle them accordingly. 1638 */ 1639 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1640 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1641 /* 1642 * Only stop for a left parenthesis if it isn't at the 1643 * start of a word (that'll be for variable changes 1644 * later) and isn't preceded by a dollar sign (a dynamic 1645 * source). 1646 */ 1647 break; 1648 } 1649 } 1650 1651 if (*cp == LPAREN) { 1652 sources = Lst_Init(FALSE); 1653 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1654 Parse_Error(PARSE_FATAL, 1655 "Error in source archive spec \"%s\"", line); 1656 goto out; 1657 } 1658 1659 while (!Lst_IsEmpty (sources)) { 1660 gn = (GNode *)Lst_DeQueue(sources); 1661 ParseDoSrc(tOp, gn->name); 1662 } 1663 Lst_Destroy(sources, NULL); 1664 cp = line; 1665 } else { 1666 if (*cp) { 1667 *cp = '\0'; 1668 cp += 1; 1669 } 1670 1671 ParseDoSrc(tOp, line); 1672 } 1673 while (*cp && isspace ((unsigned char)*cp)) { 1674 cp++; 1675 } 1676 line = cp; 1677 } 1678 } 1679 1680 if (mainNode == NULL) { 1681 /* 1682 * If we have yet to decide on a main target to make, in the 1683 * absence of any user input, we want the first target on 1684 * the first dependency line that is actually a real target 1685 * (i.e. isn't a .USE or .EXEC rule) to be made. 1686 */ 1687 Lst_ForEach(targets, ParseFindMain, NULL); 1688 } 1689 1690 out: 1691 if (curTargs) 1692 Lst_Destroy(curTargs, NULL); 1693 } 1694 1695 /*- 1696 *--------------------------------------------------------------------- 1697 * Parse_IsVar -- 1698 * Return TRUE if the passed line is a variable assignment. A variable 1699 * assignment consists of a single word followed by optional whitespace 1700 * followed by either a += or an = operator. 1701 * This function is used both by the Parse_File function and main when 1702 * parsing the command-line arguments. 1703 * 1704 * Input: 1705 * line the line to check 1706 * 1707 * Results: 1708 * TRUE if it is. FALSE if it ain't 1709 * 1710 * Side Effects: 1711 * none 1712 *--------------------------------------------------------------------- 1713 */ 1714 Boolean 1715 Parse_IsVar(char *line) 1716 { 1717 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1718 char ch; 1719 int level = 0; 1720 #define ISEQOPERATOR(c) \ 1721 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1722 1723 /* 1724 * Skip to variable name 1725 */ 1726 for (;(*line == ' ') || (*line == '\t'); line++) 1727 continue; 1728 1729 /* Scan for one of the assignment operators outside a variable expansion */ 1730 while ((ch = *line++) != 0) { 1731 if (ch == '(' || ch == '{') { 1732 level++; 1733 continue; 1734 } 1735 if (ch == ')' || ch == '}') { 1736 level--; 1737 continue; 1738 } 1739 if (level != 0) 1740 continue; 1741 while (ch == ' ' || ch == '\t') { 1742 ch = *line++; 1743 wasSpace = TRUE; 1744 } 1745 #ifdef SUNSHCMD 1746 if (ch == ':' && strncmp(line, "sh", 2) == 0) { 1747 line += 2; 1748 continue; 1749 } 1750 #endif 1751 if (ch == '=') 1752 return TRUE; 1753 if (*line == '=' && ISEQOPERATOR(ch)) 1754 return TRUE; 1755 if (wasSpace) 1756 return FALSE; 1757 } 1758 1759 return FALSE; 1760 } 1761 1762 /*- 1763 *--------------------------------------------------------------------- 1764 * Parse_DoVar -- 1765 * Take the variable assignment in the passed line and do it in the 1766 * global context. 1767 * 1768 * Note: There is a lexical ambiguity with assignment modifier characters 1769 * in variable names. This routine interprets the character before the = 1770 * as a modifier. Therefore, an assignment like 1771 * C++=/usr/bin/CC 1772 * is interpreted as "C+ +=" instead of "C++ =". 1773 * 1774 * Input: 1775 * line a line guaranteed to be a variable assignment. 1776 * This reduces error checks 1777 * ctxt Context in which to do the assignment 1778 * 1779 * Results: 1780 * none 1781 * 1782 * Side Effects: 1783 * the variable structure of the given variable name is altered in the 1784 * global context. 1785 *--------------------------------------------------------------------- 1786 */ 1787 void 1788 Parse_DoVar(char *line, GNode *ctxt) 1789 { 1790 char *cp; /* pointer into line */ 1791 enum { 1792 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1793 } type; /* Type of assignment */ 1794 char *opc; /* ptr to operator character to 1795 * null-terminate the variable name */ 1796 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1797 * i.e. if any variable expansion was 1798 * performed */ 1799 int depth; 1800 1801 /* 1802 * Skip to variable name 1803 */ 1804 while ((*line == ' ') || (*line == '\t')) { 1805 line++; 1806 } 1807 1808 /* 1809 * Skip to operator character, nulling out whitespace as we go 1810 * XXX Rather than counting () and {} we should look for $ and 1811 * then expand the variable. 1812 */ 1813 for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) { 1814 if (*cp == '(' || *cp == '{') { 1815 depth++; 1816 continue; 1817 } 1818 if (*cp == ')' || *cp == '}') { 1819 depth--; 1820 continue; 1821 } 1822 if (depth == 0 && isspace ((unsigned char)*cp)) { 1823 *cp = '\0'; 1824 } 1825 } 1826 opc = cp-1; /* operator is the previous character */ 1827 *cp++ = '\0'; /* nuke the = */ 1828 1829 /* 1830 * Check operator type 1831 */ 1832 switch (*opc) { 1833 case '+': 1834 type = VAR_APPEND; 1835 *opc = '\0'; 1836 break; 1837 1838 case '?': 1839 /* 1840 * If the variable already has a value, we don't do anything. 1841 */ 1842 *opc = '\0'; 1843 if (Var_Exists(line, ctxt)) { 1844 return; 1845 } else { 1846 type = VAR_NORMAL; 1847 } 1848 break; 1849 1850 case ':': 1851 type = VAR_SUBST; 1852 *opc = '\0'; 1853 break; 1854 1855 case '!': 1856 type = VAR_SHELL; 1857 *opc = '\0'; 1858 break; 1859 1860 default: 1861 #ifdef SUNSHCMD 1862 while (opc > line && *opc != ':') 1863 opc--; 1864 1865 if (strncmp(opc, ":sh", 3) == 0) { 1866 type = VAR_SHELL; 1867 *opc = '\0'; 1868 break; 1869 } 1870 #endif 1871 type = VAR_NORMAL; 1872 break; 1873 } 1874 1875 while (isspace ((unsigned char)*cp)) { 1876 cp++; 1877 } 1878 1879 if (type == VAR_APPEND) { 1880 Var_Append(line, cp, ctxt); 1881 } else if (type == VAR_SUBST) { 1882 /* 1883 * Allow variables in the old value to be undefined, but leave their 1884 * invocation alone -- this is done by forcing oldVars to be false. 1885 * XXX: This can cause recursive variables, but that's not hard to do, 1886 * and this allows someone to do something like 1887 * 1888 * CFLAGS = $(.INCLUDES) 1889 * CFLAGS := -I.. $(CFLAGS) 1890 * 1891 * And not get an error. 1892 */ 1893 Boolean oldOldVars = oldVars; 1894 1895 oldVars = FALSE; 1896 1897 /* 1898 * make sure that we set the variable the first time to nothing 1899 * so that it gets substituted! 1900 */ 1901 if (!Var_Exists(line, ctxt)) 1902 Var_Set(line, "", ctxt, 0); 1903 1904 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1905 oldVars = oldOldVars; 1906 freeCp = TRUE; 1907 1908 Var_Set(line, cp, ctxt, 0); 1909 } else if (type == VAR_SHELL) { 1910 char *res; 1911 const char *error; 1912 1913 if (strchr(cp, '$') != NULL) { 1914 /* 1915 * There's a dollar sign in the command, so perform variable 1916 * expansion on the whole thing. The resulting string will need 1917 * freeing when we're done, so set freeCmd to TRUE. 1918 */ 1919 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1920 freeCp = TRUE; 1921 } 1922 1923 res = Cmd_Exec(cp, &error); 1924 Var_Set(line, res, ctxt, 0); 1925 free(res); 1926 1927 if (error) 1928 Parse_Error(PARSE_WARNING, error, cp); 1929 } else { 1930 /* 1931 * Normal assignment -- just do it. 1932 */ 1933 Var_Set(line, cp, ctxt, 0); 1934 } 1935 if (strcmp(line, MAKEOVERRIDES) == 0) 1936 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1937 else if (strcmp(line, ".CURDIR") == 0) { 1938 /* 1939 * Somone is being (too?) clever... 1940 * Let's pretend they know what they are doing and 1941 * re-initialize the 'cur' Path. 1942 */ 1943 Dir_InitCur(cp); 1944 Dir_SetPATH(); 1945 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 1946 Job_SetPrefix(); 1947 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 1948 Var_Export(cp, 0); 1949 } 1950 if (freeCp) 1951 free(cp); 1952 } 1953 1954 1955 /* 1956 * ParseMaybeSubMake -- 1957 * Scan the command string to see if it a possible submake node 1958 * Input: 1959 * cmd the command to scan 1960 * Results: 1961 * TRUE if the command is possibly a submake, FALSE if not. 1962 */ 1963 static Boolean 1964 ParseMaybeSubMake(const char *cmd) 1965 { 1966 static struct { 1967 const char *name; 1968 size_t len; 1969 } vals[] = { 1970 #define MKV(A) { A, sizeof(A) - 1 } 1971 MKV("${MAKE}"), 1972 MKV("${.MAKE}"), 1973 MKV("$(MAKE)"), 1974 MKV("$(.MAKE)"), 1975 MKV("make"), 1976 }; 1977 for (size_t i = 0; i < __arraycount(vals); i++) { 1978 char *ptr; 1979 if ((ptr = strstr(cmd, vals[i].name)) == NULL) 1980 continue; 1981 if ((ptr == cmd || !isalnum((unsigned char)ptr[-1])) 1982 && !isalnum((unsigned char)ptr[vals[i].len])) { 1983 printf("good [%c] [%c] [%s]\n", ptr[-1], ptr[vals[i].len], cmd); 1984 return TRUE; 1985 } 1986 printf("bad [%c] [%c] [%s]\n", ptr[-1], ptr[vals[i].len], cmd); 1987 } 1988 return FALSE; 1989 } 1990 1991 /*- 1992 * ParseAddCmd -- 1993 * Lst_ForEach function to add a command line to all targets 1994 * 1995 * Input: 1996 * gnp the node to which the command is to be added 1997 * cmd the command to add 1998 * 1999 * Results: 2000 * Always 0 2001 * 2002 * Side Effects: 2003 * A new element is added to the commands list of the node, 2004 * and the node can be marked as a submake node if the command is 2005 * determined to be that. 2006 */ 2007 static int 2008 ParseAddCmd(void *gnp, void *cmd) 2009 { 2010 GNode *gn = (GNode *)gnp; 2011 2012 /* Add to last (ie current) cohort for :: targets */ 2013 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 2014 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 2015 2016 /* if target already supplied, ignore commands */ 2017 if (!(gn->type & OP_HAS_COMMANDS)) { 2018 (void)Lst_AtEnd(gn->commands, cmd); 2019 if (ParseIsSubMake(cmd)) 2020 gn->type |= OP_SUBMAKE; 2021 ParseMark(gn); 2022 } else { 2023 #ifdef notyet 2024 /* XXX: We cannot do this until we fix the tree */ 2025 (void)Lst_AtEnd(gn->commands, cmd); 2026 Parse_Error(PARSE_WARNING, 2027 "overriding commands for target \"%s\"; " 2028 "previous commands defined at %s: %d ignored", 2029 gn->name, gn->fname, gn->lineno); 2030 #else 2031 Parse_Error(PARSE_WARNING, 2032 "duplicate script for target \"%s\" ignored", 2033 gn->name); 2034 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 2035 "using previous script for \"%s\" defined here", 2036 gn->name); 2037 #endif 2038 } 2039 return(0); 2040 } 2041 2042 /*- 2043 *----------------------------------------------------------------------- 2044 * ParseHasCommands -- 2045 * Callback procedure for Parse_File when destroying the list of 2046 * targets on the last dependency line. Marks a target as already 2047 * having commands if it does, to keep from having shell commands 2048 * on multiple dependency lines. 2049 * 2050 * Input: 2051 * gnp Node to examine 2052 * 2053 * Results: 2054 * None 2055 * 2056 * Side Effects: 2057 * OP_HAS_COMMANDS may be set for the target. 2058 * 2059 *----------------------------------------------------------------------- 2060 */ 2061 static void 2062 ParseHasCommands(void *gnp) 2063 { 2064 GNode *gn = (GNode *)gnp; 2065 if (!Lst_IsEmpty(gn->commands)) { 2066 gn->type |= OP_HAS_COMMANDS; 2067 } 2068 } 2069 2070 /*- 2071 *----------------------------------------------------------------------- 2072 * Parse_AddIncludeDir -- 2073 * Add a directory to the path searched for included makefiles 2074 * bracketed by double-quotes. Used by functions in main.c 2075 * 2076 * Input: 2077 * dir The name of the directory to add 2078 * 2079 * Results: 2080 * None. 2081 * 2082 * Side Effects: 2083 * The directory is appended to the list. 2084 * 2085 *----------------------------------------------------------------------- 2086 */ 2087 void 2088 Parse_AddIncludeDir(char *dir) 2089 { 2090 (void)Dir_AddDir(parseIncPath, dir); 2091 } 2092 2093 /*- 2094 *--------------------------------------------------------------------- 2095 * ParseDoInclude -- 2096 * Push to another file. 2097 * 2098 * The input is the line minus the `.'. A file spec is a string 2099 * enclosed in <> or "". The former is looked for only in sysIncPath. 2100 * The latter in . and the directories specified by -I command line 2101 * options 2102 * 2103 * Results: 2104 * None 2105 * 2106 * Side Effects: 2107 * A structure is added to the includes Lst and readProc, lineno, 2108 * fname and curFILE are altered for the new file 2109 *--------------------------------------------------------------------- 2110 */ 2111 2112 static void 2113 Parse_include_file(char *file, Boolean isSystem, int silent) 2114 { 2115 struct loadedfile *lf; 2116 char *fullname; /* full pathname of file */ 2117 char *newName; 2118 char *prefEnd, *incdir; 2119 int fd; 2120 int i; 2121 2122 /* 2123 * Now we know the file's name and its search path, we attempt to 2124 * find the durn thing. A return of NULL indicates the file don't 2125 * exist. 2126 */ 2127 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2128 2129 if (fullname == NULL && !isSystem) { 2130 /* 2131 * Include files contained in double-quotes are first searched for 2132 * relative to the including file's location. We don't want to 2133 * cd there, of course, so we just tack on the old file's 2134 * leading path components and call Dir_FindFile to see if 2135 * we can locate the beast. 2136 */ 2137 2138 incdir = bmake_strdup(curFile->fname); 2139 prefEnd = strrchr(incdir, '/'); 2140 if (prefEnd != NULL) { 2141 *prefEnd = '\0'; 2142 /* Now do lexical processing of leading "../" on the filename */ 2143 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2144 prefEnd = strrchr(incdir + 1, '/'); 2145 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2146 break; 2147 *prefEnd = '\0'; 2148 } 2149 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2150 fullname = Dir_FindFile(newName, parseIncPath); 2151 if (fullname == NULL) 2152 fullname = Dir_FindFile(newName, dirSearchPath); 2153 free(newName); 2154 } 2155 free(incdir); 2156 2157 if (fullname == NULL) { 2158 /* 2159 * Makefile wasn't found in same directory as included makefile. 2160 * Search for it first on the -I search path, 2161 * then on the .PATH search path, if not found in a -I directory. 2162 * If we have a suffix specific path we should use that. 2163 */ 2164 char *suff; 2165 Lst suffPath = NULL; 2166 2167 if ((suff = strrchr(file, '.'))) { 2168 suffPath = Suff_GetPath(suff); 2169 if (suffPath != NULL) { 2170 fullname = Dir_FindFile(file, suffPath); 2171 } 2172 } 2173 if (fullname == NULL) { 2174 fullname = Dir_FindFile(file, parseIncPath); 2175 if (fullname == NULL) { 2176 fullname = Dir_FindFile(file, dirSearchPath); 2177 } 2178 } 2179 } 2180 } 2181 2182 /* Looking for a system file or file still not found */ 2183 if (fullname == NULL) { 2184 /* 2185 * Look for it on the system path 2186 */ 2187 fullname = Dir_FindFile(file, 2188 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2189 } 2190 2191 if (fullname == NULL) { 2192 if (!silent) 2193 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2194 return; 2195 } 2196 2197 /* Actually open the file... */ 2198 fd = open(fullname, O_RDONLY); 2199 if (fd == -1) { 2200 if (!silent) 2201 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2202 free(fullname); 2203 return; 2204 } 2205 2206 /* load it */ 2207 lf = loadfile(fullname, fd); 2208 2209 ParseSetIncludedFile(); 2210 /* Start reading from this file next */ 2211 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2212 curFile->lf = lf; 2213 } 2214 2215 static void 2216 ParseDoInclude(char *line) 2217 { 2218 char endc; /* the character which ends the file spec */ 2219 char *cp; /* current position in file spec */ 2220 int silent = (*line != 'i') ? 1 : 0; 2221 char *file = &line[7 + silent]; 2222 2223 /* Skip to delimiter character so we know where to look */ 2224 while (*file == ' ' || *file == '\t') 2225 file++; 2226 2227 if (*file != '"' && *file != '<') { 2228 Parse_Error(PARSE_FATAL, 2229 ".include filename must be delimited by '\"' or '<'"); 2230 return; 2231 } 2232 2233 /* 2234 * Set the search path on which to find the include file based on the 2235 * characters which bracket its name. Angle-brackets imply it's 2236 * a system Makefile while double-quotes imply it's a user makefile 2237 */ 2238 if (*file == '<') { 2239 endc = '>'; 2240 } else { 2241 endc = '"'; 2242 } 2243 2244 /* Skip to matching delimiter */ 2245 for (cp = ++file; *cp && *cp != endc; cp++) 2246 continue; 2247 2248 if (*cp != endc) { 2249 Parse_Error(PARSE_FATAL, 2250 "Unclosed %cinclude filename. '%c' expected", 2251 '.', endc); 2252 return; 2253 } 2254 *cp = '\0'; 2255 2256 /* 2257 * Substitute for any variables in the file name before trying to 2258 * find the thing. 2259 */ 2260 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2261 2262 Parse_include_file(file, endc == '>', silent); 2263 free(file); 2264 } 2265 2266 2267 /*- 2268 *--------------------------------------------------------------------- 2269 * ParseSetIncludedFile -- 2270 * Set the .INCLUDEDFROMFILE variable to the contents of .PARSEFILE 2271 * and the .INCLUDEDFROMDIR variable to the contents of .PARSEDIR 2272 * 2273 * Results: 2274 * None 2275 * 2276 * Side Effects: 2277 * The .INCLUDEDFROMFILE variable is overwritten by the contents 2278 * of .PARSEFILE and the .INCLUDEDFROMDIR variable is overwriten 2279 * by the contents of .PARSEDIR 2280 *--------------------------------------------------------------------- 2281 */ 2282 static void 2283 ParseSetIncludedFile(void) 2284 { 2285 char *pf, *fp = NULL; 2286 char *pd, *dp = NULL; 2287 2288 pf = Var_Value(".PARSEFILE", VAR_GLOBAL, &fp); 2289 Var_Set(".INCLUDEDFROMFILE", pf, VAR_GLOBAL, 0); 2290 pd = Var_Value(".PARSEDIR", VAR_GLOBAL, &dp); 2291 Var_Set(".INCLUDEDFROMDIR", pd, VAR_GLOBAL, 0); 2292 2293 if (DEBUG(PARSE)) 2294 fprintf(debug_file, "%s: ${.INCLUDEDFROMDIR} = `%s' " 2295 "${.INCLUDEDFROMFILE} = `%s'\n", __func__, pd, pf); 2296 2297 if (fp) 2298 free(fp); 2299 if (dp) 2300 free(dp); 2301 } 2302 /*- 2303 *--------------------------------------------------------------------- 2304 * ParseSetParseFile -- 2305 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2306 * basename of the given filename 2307 * 2308 * Results: 2309 * None 2310 * 2311 * Side Effects: 2312 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2313 * dirname and basename of the given filename. 2314 *--------------------------------------------------------------------- 2315 */ 2316 static void 2317 ParseSetParseFile(const char *filename) 2318 { 2319 char *slash, *dirname; 2320 const char *pd, *pf; 2321 int len; 2322 2323 slash = strrchr(filename, '/'); 2324 if (slash == NULL) { 2325 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2326 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2327 dirname= NULL; 2328 } else { 2329 len = slash - filename; 2330 dirname = bmake_malloc(len + 1); 2331 memcpy(dirname, filename, len); 2332 dirname[len] = '\0'; 2333 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2334 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2335 } 2336 if (DEBUG(PARSE)) 2337 fprintf(debug_file, "%s: ${.PARSEDIR} = `%s' ${.PARSEFILE} = `%s'\n", 2338 __func__, pd, pf); 2339 free(dirname); 2340 } 2341 2342 /* 2343 * Track the makefiles we read - so makefiles can 2344 * set dependencies on them. 2345 * Avoid adding anything more than once. 2346 */ 2347 2348 static void 2349 ParseTrackInput(const char *name) 2350 { 2351 char *old; 2352 char *fp = NULL; 2353 size_t name_len = strlen(name); 2354 2355 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2356 if (old) { 2357 /* does it contain name? */ 2358 for (; old != NULL; old = strchr(old, ' ')) { 2359 if (*old == ' ') 2360 old++; 2361 if (memcmp(old, name, name_len) == 0 2362 && (old[name_len] == 0 || old[name_len] == ' ')) 2363 goto cleanup; 2364 } 2365 } 2366 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2367 cleanup: 2368 if (fp) { 2369 free(fp); 2370 } 2371 } 2372 2373 2374 /*- 2375 *--------------------------------------------------------------------- 2376 * Parse_setInput -- 2377 * Start Parsing from the given source 2378 * 2379 * Results: 2380 * None 2381 * 2382 * Side Effects: 2383 * A structure is added to the includes Lst and readProc, lineno, 2384 * fname and curFile are altered for the new file 2385 *--------------------------------------------------------------------- 2386 */ 2387 void 2388 Parse_SetInput(const char *name, int line, int fd, 2389 char *(*nextbuf)(void *, size_t *), void *arg) 2390 { 2391 char *buf; 2392 size_t len; 2393 2394 if (name == NULL) 2395 name = curFile->fname; 2396 else 2397 ParseTrackInput(name); 2398 2399 if (DEBUG(PARSE)) 2400 fprintf(debug_file, "%s: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2401 __func__, name, line, fd, nextbuf, arg); 2402 2403 if (fd == -1 && nextbuf == NULL) 2404 /* sanity */ 2405 return; 2406 2407 if (curFile != NULL) 2408 /* Save exiting file info */ 2409 Lst_AtFront(includes, curFile); 2410 2411 /* Allocate and fill in new structure */ 2412 curFile = bmake_malloc(sizeof *curFile); 2413 2414 /* 2415 * Once the previous state has been saved, we can get down to reading 2416 * the new file. We set up the name of the file to be the absolute 2417 * name of the include file so error messages refer to the right 2418 * place. 2419 */ 2420 curFile->fname = bmake_strdup(name); 2421 curFile->lineno = line; 2422 curFile->first_lineno = line; 2423 curFile->nextbuf = nextbuf; 2424 curFile->nextbuf_arg = arg; 2425 curFile->lf = NULL; 2426 2427 assert(nextbuf != NULL); 2428 2429 /* Get first block of input data */ 2430 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2431 if (buf == NULL) { 2432 /* Was all a waste of time ... */ 2433 if (curFile->fname) 2434 free(curFile->fname); 2435 free(curFile); 2436 return; 2437 } 2438 curFile->P_str = buf; 2439 curFile->P_ptr = buf; 2440 curFile->P_end = buf+len; 2441 2442 curFile->cond_depth = Cond_save_depth(); 2443 ParseSetParseFile(name); 2444 } 2445 2446 #ifdef SYSVINCLUDE 2447 /*- 2448 *--------------------------------------------------------------------- 2449 * ParseTraditionalInclude -- 2450 * Push to another file. 2451 * 2452 * The input is the current line. The file name(s) are 2453 * following the "include". 2454 * 2455 * Results: 2456 * None 2457 * 2458 * Side Effects: 2459 * A structure is added to the includes Lst and readProc, lineno, 2460 * fname and curFILE are altered for the new file 2461 *--------------------------------------------------------------------- 2462 */ 2463 static void 2464 ParseTraditionalInclude(char *line) 2465 { 2466 char *cp; /* current position in file spec */ 2467 int done = 0; 2468 int silent = (line[0] != 'i') ? 1 : 0; 2469 char *file = &line[silent + 7]; 2470 char *all_files; 2471 2472 if (DEBUG(PARSE)) { 2473 fprintf(debug_file, "%s: %s\n", __func__, file); 2474 } 2475 2476 /* 2477 * Skip over whitespace 2478 */ 2479 while (isspace((unsigned char)*file)) 2480 file++; 2481 2482 /* 2483 * Substitute for any variables in the file name before trying to 2484 * find the thing. 2485 */ 2486 all_files = Var_Subst(NULL, file, VAR_CMD, FALSE); 2487 2488 if (*file == '\0') { 2489 Parse_Error(PARSE_FATAL, 2490 "Filename missing from \"include\""); 2491 return; 2492 } 2493 2494 for (file = all_files; !done; file = cp + 1) { 2495 /* Skip to end of line or next whitespace */ 2496 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2497 continue; 2498 2499 if (*cp) 2500 *cp = '\0'; 2501 else 2502 done = 1; 2503 2504 Parse_include_file(file, FALSE, silent); 2505 } 2506 free(all_files); 2507 } 2508 #endif 2509 2510 #ifdef GMAKEEXPORT 2511 /*- 2512 *--------------------------------------------------------------------- 2513 * ParseGmakeExport -- 2514 * Parse export <variable>=<value> 2515 * 2516 * And set the environment with it. 2517 * 2518 * Results: 2519 * None 2520 * 2521 * Side Effects: 2522 * None 2523 *--------------------------------------------------------------------- 2524 */ 2525 static void 2526 ParseGmakeExport(char *line) 2527 { 2528 char *variable = &line[6]; 2529 char *value; 2530 2531 if (DEBUG(PARSE)) { 2532 fprintf(debug_file, "%s: %s\n", __func__, variable); 2533 } 2534 2535 /* 2536 * Skip over whitespace 2537 */ 2538 while (isspace((unsigned char)*variable)) 2539 variable++; 2540 2541 for (value = variable; *value && *value != '='; value++) 2542 continue; 2543 2544 if (*value != '=') { 2545 Parse_Error(PARSE_FATAL, 2546 "Variable/Value missing from \"export\""); 2547 return; 2548 } 2549 *value++ = '\0'; /* terminate variable */ 2550 2551 /* 2552 * Expand the value before putting it in the environment. 2553 */ 2554 value = Var_Subst(NULL, value, VAR_CMD, FALSE); 2555 setenv(variable, value, 1); 2556 } 2557 #endif 2558 2559 /*- 2560 *--------------------------------------------------------------------- 2561 * ParseEOF -- 2562 * Called when EOF is reached in the current file. If we were reading 2563 * an include file, the includes stack is popped and things set up 2564 * to go back to reading the previous file at the previous location. 2565 * 2566 * Results: 2567 * CONTINUE if there's more to do. DONE if not. 2568 * 2569 * Side Effects: 2570 * The old curFILE, is closed. The includes list is shortened. 2571 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2572 *--------------------------------------------------------------------- 2573 */ 2574 static int 2575 ParseEOF(void) 2576 { 2577 char *ptr; 2578 size_t len; 2579 2580 assert(curFile->nextbuf != NULL); 2581 2582 /* get next input buffer, if any */ 2583 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2584 curFile->P_ptr = ptr; 2585 curFile->P_str = ptr; 2586 curFile->P_end = ptr + len; 2587 curFile->lineno = curFile->first_lineno; 2588 if (ptr != NULL) { 2589 /* Iterate again */ 2590 return CONTINUE; 2591 } 2592 2593 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2594 Cond_restore_depth(curFile->cond_depth); 2595 2596 if (curFile->lf != NULL) { 2597 loadedfile_destroy(curFile->lf); 2598 curFile->lf = NULL; 2599 } 2600 2601 /* Dispose of curFile info */ 2602 /* Leak curFile->fname because all the gnodes have pointers to it */ 2603 free(curFile->P_str); 2604 free(curFile); 2605 2606 curFile = Lst_DeQueue(includes); 2607 2608 if (curFile == NULL) { 2609 /* We've run out of input */ 2610 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2611 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2612 Var_Delete(".INCLUDEDFROMDIR", VAR_GLOBAL); 2613 Var_Delete(".INCLUDEDFROMFILE", VAR_GLOBAL); 2614 return DONE; 2615 } 2616 2617 if (DEBUG(PARSE)) 2618 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2619 curFile->fname, curFile->lineno); 2620 2621 /* Restore the PARSEDIR/PARSEFILE variables */ 2622 ParseSetParseFile(curFile->fname); 2623 return (CONTINUE); 2624 } 2625 2626 #define PARSE_RAW 1 2627 #define PARSE_SKIP 2 2628 2629 static char * 2630 ParseGetLine(int flags, int *length) 2631 { 2632 IFile *cf = curFile; 2633 char *ptr; 2634 char ch; 2635 char *line; 2636 char *line_end; 2637 char *escaped; 2638 char *comment; 2639 char *tp; 2640 2641 /* Loop through blank lines and comment lines */ 2642 for (;;) { 2643 cf->lineno++; 2644 line = cf->P_ptr; 2645 ptr = line; 2646 line_end = line; 2647 escaped = NULL; 2648 comment = NULL; 2649 for (;;) { 2650 if (cf->P_end != NULL && ptr == cf->P_end) { 2651 /* end of buffer */ 2652 ch = 0; 2653 break; 2654 } 2655 ch = *ptr; 2656 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2657 if (cf->P_end == NULL) 2658 /* End of string (aka for loop) data */ 2659 break; 2660 /* see if there is more we can parse */ 2661 while (ptr++ < cf->P_end) { 2662 if ((ch = *ptr) == '\n') { 2663 if (ptr > line && ptr[-1] == '\\') 2664 continue; 2665 Parse_Error(PARSE_WARNING, 2666 "Zero byte read from file, skipping rest of line."); 2667 break; 2668 } 2669 } 2670 if (cf->nextbuf != NULL) { 2671 /* 2672 * End of this buffer; return EOF and outer logic 2673 * will get the next one. (eww) 2674 */ 2675 break; 2676 } 2677 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2678 return NULL; 2679 } 2680 2681 if (ch == '\\') { 2682 /* Don't treat next character as special, remember first one */ 2683 if (escaped == NULL) 2684 escaped = ptr; 2685 if (ptr[1] == '\n') 2686 cf->lineno++; 2687 ptr += 2; 2688 line_end = ptr; 2689 continue; 2690 } 2691 if (ch == '#' && comment == NULL) { 2692 /* Remember first '#' for comment stripping */ 2693 /* Unless previous char was '[', as in modifier :[#] */ 2694 if (!(ptr > line && ptr[-1] == '[')) 2695 comment = line_end; 2696 } 2697 ptr++; 2698 if (ch == '\n') 2699 break; 2700 if (!isspace((unsigned char)ch)) 2701 /* We are not interested in trailing whitespace */ 2702 line_end = ptr; 2703 } 2704 2705 /* Save next 'to be processed' location */ 2706 cf->P_ptr = ptr; 2707 2708 /* Check we have a non-comment, non-blank line */ 2709 if (line_end == line || comment == line) { 2710 if (ch == 0) 2711 /* At end of file */ 2712 return NULL; 2713 /* Parse another line */ 2714 continue; 2715 } 2716 2717 /* We now have a line of data */ 2718 *line_end = 0; 2719 2720 if (flags & PARSE_RAW) { 2721 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2722 *length = line_end - line; 2723 return line; 2724 } 2725 2726 if (flags & PARSE_SKIP) { 2727 /* Completely ignore non-directives */ 2728 if (line[0] != '.') 2729 continue; 2730 /* We could do more of the .else/.elif/.endif checks here */ 2731 } 2732 break; 2733 } 2734 2735 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2736 if (comment != NULL && line[0] != '\t') { 2737 line_end = comment; 2738 *line_end = 0; 2739 } 2740 2741 /* If we didn't see a '\\' then the in-situ data is fine */ 2742 if (escaped == NULL) { 2743 *length = line_end - line; 2744 return line; 2745 } 2746 2747 /* Remove escapes from '\n' and '#' */ 2748 tp = ptr = escaped; 2749 escaped = line; 2750 for (; ; *tp++ = ch) { 2751 ch = *ptr++; 2752 if (ch != '\\') { 2753 if (ch == 0) 2754 break; 2755 continue; 2756 } 2757 2758 ch = *ptr++; 2759 if (ch == 0) { 2760 /* Delete '\\' at end of buffer */ 2761 tp--; 2762 break; 2763 } 2764 2765 if (ch == '#' && line[0] != '\t') 2766 /* Delete '\\' from before '#' on non-command lines */ 2767 continue; 2768 2769 if (ch != '\n') { 2770 /* Leave '\\' in buffer for later */ 2771 *tp++ = '\\'; 2772 /* Make sure we don't delete an escaped ' ' from the line end */ 2773 escaped = tp + 1; 2774 continue; 2775 } 2776 2777 /* Escaped '\n' replace following whitespace with a single ' ' */ 2778 while (ptr[0] == ' ' || ptr[0] == '\t') 2779 ptr++; 2780 ch = ' '; 2781 } 2782 2783 /* Delete any trailing spaces - eg from empty continuations */ 2784 while (tp > escaped && isspace((unsigned char)tp[-1])) 2785 tp--; 2786 2787 *tp = 0; 2788 *length = tp - line; 2789 return line; 2790 } 2791 2792 /*- 2793 *--------------------------------------------------------------------- 2794 * ParseReadLine -- 2795 * Read an entire line from the input file. Called only by Parse_File. 2796 * 2797 * Results: 2798 * A line w/o its newline 2799 * 2800 * Side Effects: 2801 * Only those associated with reading a character 2802 *--------------------------------------------------------------------- 2803 */ 2804 static char * 2805 ParseReadLine(void) 2806 { 2807 char *line; /* Result */ 2808 int lineLength; /* Length of result */ 2809 int lineno; /* Saved line # */ 2810 int rval; 2811 2812 for (;;) { 2813 line = ParseGetLine(0, &lineLength); 2814 if (line == NULL) 2815 return NULL; 2816 2817 if (line[0] != '.') 2818 return line; 2819 2820 /* 2821 * The line might be a conditional. Ask the conditional module 2822 * about it and act accordingly 2823 */ 2824 switch (Cond_Eval(line)) { 2825 case COND_SKIP: 2826 /* Skip to next conditional that evaluates to COND_PARSE. */ 2827 do { 2828 line = ParseGetLine(PARSE_SKIP, &lineLength); 2829 } while (line && Cond_Eval(line) != COND_PARSE); 2830 if (line == NULL) 2831 break; 2832 continue; 2833 case COND_PARSE: 2834 continue; 2835 case COND_INVALID: /* Not a conditional line */ 2836 /* Check for .for loops */ 2837 rval = For_Eval(line); 2838 if (rval == 0) 2839 /* Not a .for line */ 2840 break; 2841 if (rval < 0) 2842 /* Syntax error - error printed, ignore line */ 2843 continue; 2844 /* Start of a .for loop */ 2845 lineno = curFile->lineno; 2846 /* Accumulate loop lines until matching .endfor */ 2847 do { 2848 line = ParseGetLine(PARSE_RAW, &lineLength); 2849 if (line == NULL) { 2850 Parse_Error(PARSE_FATAL, 2851 "Unexpected end of file in for loop."); 2852 break; 2853 } 2854 } while (For_Accum(line)); 2855 /* Stash each iteration as a new 'input file' */ 2856 For_Run(lineno); 2857 /* Read next line from for-loop buffer */ 2858 continue; 2859 } 2860 return (line); 2861 } 2862 } 2863 2864 /*- 2865 *----------------------------------------------------------------------- 2866 * ParseFinishLine -- 2867 * Handle the end of a dependency group. 2868 * 2869 * Results: 2870 * Nothing. 2871 * 2872 * Side Effects: 2873 * inLine set FALSE. 'targets' list destroyed. 2874 * 2875 *----------------------------------------------------------------------- 2876 */ 2877 static void 2878 ParseFinishLine(void) 2879 { 2880 if (inLine) { 2881 Lst_ForEach(targets, Suff_EndTransform, NULL); 2882 Lst_Destroy(targets, ParseHasCommands); 2883 targets = NULL; 2884 inLine = FALSE; 2885 } 2886 } 2887 2888 2889 /*- 2890 *--------------------------------------------------------------------- 2891 * Parse_File -- 2892 * Parse a file into its component parts, incorporating it into the 2893 * current dependency graph. This is the main function and controls 2894 * almost every other function in this module 2895 * 2896 * Input: 2897 * name the name of the file being read 2898 * fd Open file to makefile to parse 2899 * 2900 * Results: 2901 * None 2902 * 2903 * Side Effects: 2904 * closes fd. 2905 * Loads. Nodes are added to the list of all targets, nodes and links 2906 * are added to the dependency graph. etc. etc. etc. 2907 *--------------------------------------------------------------------- 2908 */ 2909 void 2910 Parse_File(const char *name, int fd) 2911 { 2912 char *cp; /* pointer into the line */ 2913 char *line; /* the line we're working on */ 2914 struct loadedfile *lf; 2915 2916 lf = loadfile(name, fd); 2917 2918 inLine = FALSE; 2919 fatals = 0; 2920 2921 if (name == NULL) { 2922 name = "(stdin)"; 2923 } 2924 2925 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2926 curFile->lf = lf; 2927 2928 do { 2929 for (; (line = ParseReadLine()) != NULL; ) { 2930 if (DEBUG(PARSE)) 2931 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2932 curFile->lineno, line); 2933 if (*line == '.') { 2934 /* 2935 * Lines that begin with the special character may be 2936 * include or undef directives. 2937 * On the other hand they can be suffix rules (.c.o: ...) 2938 * or just dependencies for filenames that start '.'. 2939 */ 2940 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 2941 continue; 2942 } 2943 if (strncmp(cp, "include", 7) == 0 || 2944 ((cp[0] == 's' || cp[0] == '-') && 2945 strncmp(&cp[1], "include", 7) == 0)) { 2946 ParseDoInclude(cp); 2947 continue; 2948 } 2949 if (strncmp(cp, "undef", 5) == 0) { 2950 char *cp2; 2951 for (cp += 5; isspace((unsigned char) *cp); cp++) 2952 continue; 2953 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2954 (*cp2 != '\0'); cp2++) 2955 continue; 2956 *cp2 = '\0'; 2957 Var_Delete(cp, VAR_GLOBAL); 2958 continue; 2959 } else if (strncmp(cp, "export", 6) == 0) { 2960 for (cp += 6; isspace((unsigned char) *cp); cp++) 2961 continue; 2962 Var_Export(cp, 1); 2963 continue; 2964 } else if (strncmp(cp, "unexport", 8) == 0) { 2965 Var_UnExport(cp); 2966 continue; 2967 } else if (strncmp(cp, "info", 4) == 0 || 2968 strncmp(cp, "error", 5) == 0 || 2969 strncmp(cp, "warning", 7) == 0) { 2970 if (ParseMessage(cp)) 2971 continue; 2972 } 2973 } 2974 2975 if (*line == '\t') { 2976 /* 2977 * If a line starts with a tab, it can only hope to be 2978 * a creation command. 2979 */ 2980 cp = line + 1; 2981 shellCommand: 2982 for (; isspace ((unsigned char)*cp); cp++) { 2983 continue; 2984 } 2985 if (*cp) { 2986 if (!inLine) 2987 Parse_Error(PARSE_FATAL, 2988 "Unassociated shell command \"%s\"", 2989 cp); 2990 /* 2991 * So long as it's not a blank line and we're actually 2992 * in a dependency spec, add the command to the list of 2993 * commands of all targets in the dependency spec 2994 */ 2995 if (targets) { 2996 cp = bmake_strdup(cp); 2997 Lst_ForEach(targets, ParseAddCmd, cp); 2998 #ifdef CLEANUP 2999 Lst_AtEnd(targCmds, cp); 3000 #endif 3001 } 3002 } 3003 continue; 3004 } 3005 3006 #ifdef SYSVINCLUDE 3007 if (((strncmp(line, "include", 7) == 0 && 3008 isspace((unsigned char) line[7])) || 3009 ((line[0] == 's' || line[0] == '-') && 3010 strncmp(&line[1], "include", 7) == 0 && 3011 isspace((unsigned char) line[8]))) && 3012 strchr(line, ':') == NULL) { 3013 /* 3014 * It's an S3/S5-style "include". 3015 */ 3016 ParseTraditionalInclude(line); 3017 continue; 3018 } 3019 #endif 3020 #ifdef GMAKEEXPORT 3021 if (strncmp(line, "export", 6) == 0 && 3022 isspace((unsigned char) line[6]) && 3023 strchr(line, ':') == NULL) { 3024 /* 3025 * It's a Gmake "export". 3026 */ 3027 ParseGmakeExport(line); 3028 continue; 3029 } 3030 #endif 3031 if (Parse_IsVar(line)) { 3032 ParseFinishLine(); 3033 Parse_DoVar(line, VAR_GLOBAL); 3034 continue; 3035 } 3036 3037 #ifndef POSIX 3038 /* 3039 * To make life easier on novices, if the line is indented we 3040 * first make sure the line has a dependency operator in it. 3041 * If it doesn't have an operator and we're in a dependency 3042 * line's script, we assume it's actually a shell command 3043 * and add it to the current list of targets. 3044 */ 3045 cp = line; 3046 if (isspace((unsigned char) line[0])) { 3047 while ((*cp != '\0') && isspace((unsigned char) *cp)) 3048 cp++; 3049 while (*cp && (ParseIsEscaped(line, cp) || 3050 (*cp != ':') && (*cp != '!'))) { 3051 cp++; 3052 } 3053 if (*cp == '\0') { 3054 if (inLine) { 3055 Parse_Error(PARSE_WARNING, 3056 "Shell command needs a leading tab"); 3057 goto shellCommand; 3058 } 3059 } 3060 } 3061 #endif 3062 ParseFinishLine(); 3063 3064 /* 3065 * For some reason - probably to make the parser impossible - 3066 * a ';' can be used to separate commands from dependencies. 3067 * Attempt to avoid ';' inside substitution patterns. 3068 */ 3069 { 3070 int level = 0; 3071 3072 for (cp = line; *cp != 0; cp++) { 3073 if (*cp == '\\' && cp[1] != 0) { 3074 cp++; 3075 continue; 3076 } 3077 if (*cp == '$' && 3078 (cp[1] == '(' || cp[1] == '{')) { 3079 level++; 3080 continue; 3081 } 3082 if (level > 0) { 3083 if (*cp == ')' || *cp == '}') { 3084 level--; 3085 continue; 3086 } 3087 } else if (*cp == ';') { 3088 break; 3089 } 3090 } 3091 } 3092 if (*cp != 0) 3093 /* Terminate the dependency list at the ';' */ 3094 *cp++ = 0; 3095 else 3096 cp = NULL; 3097 3098 /* 3099 * We now know it's a dependency line so it needs to have all 3100 * variables expanded before being parsed. Tell the variable 3101 * module to complain if some variable is undefined... 3102 */ 3103 line = Var_Subst(NULL, line, VAR_CMD, TRUE); 3104 3105 /* 3106 * Need a non-circular list for the target nodes 3107 */ 3108 if (targets) 3109 Lst_Destroy(targets, NULL); 3110 3111 targets = Lst_Init(FALSE); 3112 inLine = TRUE; 3113 3114 ParseDoDependency(line); 3115 free(line); 3116 3117 /* If there were commands after a ';', add them now */ 3118 if (cp != NULL) { 3119 goto shellCommand; 3120 } 3121 } 3122 /* 3123 * Reached EOF, but it may be just EOF of an include file... 3124 */ 3125 } while (ParseEOF() == CONTINUE); 3126 3127 if (fatals) { 3128 (void)fflush(stdout); 3129 (void)fprintf(stderr, 3130 "%s: Fatal errors encountered -- cannot continue", 3131 progname); 3132 PrintOnError(NULL, NULL); 3133 exit(1); 3134 } 3135 } 3136 3137 /*- 3138 *--------------------------------------------------------------------- 3139 * Parse_Init -- 3140 * initialize the parsing module 3141 * 3142 * Results: 3143 * none 3144 * 3145 * Side Effects: 3146 * the parseIncPath list is initialized... 3147 *--------------------------------------------------------------------- 3148 */ 3149 void 3150 Parse_Init(void) 3151 { 3152 mainNode = NULL; 3153 parseIncPath = Lst_Init(FALSE); 3154 sysIncPath = Lst_Init(FALSE); 3155 defIncPath = Lst_Init(FALSE); 3156 includes = Lst_Init(FALSE); 3157 #ifdef CLEANUP 3158 targCmds = Lst_Init(FALSE); 3159 #endif 3160 } 3161 3162 void 3163 Parse_End(void) 3164 { 3165 #ifdef CLEANUP 3166 Lst_Destroy(targCmds, (FreeProc *)free); 3167 if (targets) 3168 Lst_Destroy(targets, NULL); 3169 Lst_Destroy(defIncPath, Dir_Destroy); 3170 Lst_Destroy(sysIncPath, Dir_Destroy); 3171 Lst_Destroy(parseIncPath, Dir_Destroy); 3172 Lst_Destroy(includes, NULL); /* Should be empty now */ 3173 #endif 3174 } 3175 3176 3177 /*- 3178 *----------------------------------------------------------------------- 3179 * Parse_MainName -- 3180 * Return a Lst of the main target to create for main()'s sake. If 3181 * no such target exists, we Punt with an obnoxious error message. 3182 * 3183 * Results: 3184 * A Lst of the single node to create. 3185 * 3186 * Side Effects: 3187 * None. 3188 * 3189 *----------------------------------------------------------------------- 3190 */ 3191 Lst 3192 Parse_MainName(void) 3193 { 3194 Lst mainList; /* result list */ 3195 3196 mainList = Lst_Init(FALSE); 3197 3198 if (mainNode == NULL) { 3199 Punt("no target to make."); 3200 /*NOTREACHED*/ 3201 } else if (mainNode->type & OP_DOUBLEDEP) { 3202 (void)Lst_AtEnd(mainList, mainNode); 3203 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3204 } 3205 else 3206 (void)Lst_AtEnd(mainList, mainNode); 3207 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3208 return (mainList); 3209 } 3210 3211 /*- 3212 *----------------------------------------------------------------------- 3213 * ParseMark -- 3214 * Add the filename and lineno to the GNode so that we remember 3215 * where it was first defined. 3216 * 3217 * Side Effects: 3218 * None. 3219 * 3220 *----------------------------------------------------------------------- 3221 */ 3222 static void 3223 ParseMark(GNode *gn) 3224 { 3225 gn->fname = curFile->fname; 3226 gn->lineno = curFile->lineno; 3227 } 3228
Indexes created Mon Sep 22 10:09:38 GMT 2025