1 /* $NetBSD: parse.c,v 1.217 2016/12/09 22:56:21 sjg Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: parse.c,v 1.217 2016/12/09 22:56:21 sjg Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 #if 0 77 static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94"; 78 #else 79 __RCSID("$NetBSD: parse.c,v 1.217 2016/12/09 22:56:21 sjg Exp $"); 80 #endif 81 #endif /* not lint */ 82 #endif 83 84 /*- 85 * parse.c -- 86 * Functions to parse a makefile. 87 * 88 * One function, Parse_Init, must be called before any functions 89 * in this module are used. After that, the function Parse_File is the 90 * main entry point and controls most of the other functions in this 91 * module. 92 * 93 * Most important structures are kept in Lsts. Directories for 94 * the .include "..." function are kept in the 'parseIncPath' Lst, while 95 * those for the .include <...> are kept in the 'sysIncPath' Lst. The 96 * targets currently being defined are kept in the 'targets' Lst. 97 * 98 * The variables 'fname' and 'lineno' are used to track the name 99 * of the current file and the line number in that file so that error 100 * messages can be more meaningful. 101 * 102 * Interface: 103 * Parse_Init Initialization function which must be 104 * called before anything else in this module 105 * is used. 106 * 107 * Parse_End Cleanup the module 108 * 109 * Parse_File Function used to parse a makefile. It must 110 * be given the name of the file, which should 111 * already have been opened, and a function 112 * to call to read a character from the file. 113 * 114 * Parse_IsVar Returns TRUE if the given line is a 115 * variable assignment. Used by MainParseArgs 116 * to determine if an argument is a target 117 * or a variable assignment. Used internally 118 * for pretty much the same thing... 119 * 120 * Parse_Error Function called when an error occurs in 121 * parsing. Used by the variable and 122 * conditional modules. 123 * Parse_MainName Returns a Lst of the main target to create. 124 */ 125 126 #include <sys/types.h> 127 #include <sys/stat.h> 128 #include <assert.h> 129 #include <ctype.h> 130 #include <errno.h> 131 #include <stdarg.h> 132 #include <stdio.h> 133 134 #include "make.h" 135 #include "hash.h" 136 #include "dir.h" 137 #include "job.h" 138 #include "buf.h" 139 #include "pathnames.h" 140 141 #ifdef HAVE_MMAP 142 #include <sys/mman.h> 143 144 #ifndef MAP_COPY 145 #define MAP_COPY MAP_PRIVATE 146 #endif 147 #ifndef MAP_FILE 148 #define MAP_FILE 0 149 #endif 150 #endif 151 152 //////////////////////////////////////////////////////////// 153 // types and constants 154 155 /* 156 * Structure for a file being read ("included file") 157 */ 158 typedef struct IFile { 159 char *fname; /* name of file */ 160 int lineno; /* current line number in file */ 161 int first_lineno; /* line number of start of text */ 162 int cond_depth; /* 'if' nesting when file opened */ 163 Boolean depending; /* state of doing_depend on EOF */ 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 DeleteOnError, /* .DELETE_ON_ERROR */ 188 End, /* .END */ 189 dotError, /* .ERROR */ 190 Ignore, /* .IGNORE */ 191 Includes, /* .INCLUDES */ 192 Interrupt, /* .INTERRUPT */ 193 Libs, /* .LIBS */ 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 { ".DELETE_ON_ERROR", DeleteOnError, 0 }, 306 { ".END", End, 0 }, 307 { ".ERROR", dotError, 0 }, 308 { ".EXEC", Attribute, OP_EXEC }, 309 { ".IGNORE", Ignore, OP_IGNORE }, 310 { ".INCLUDES", Includes, 0 }, 311 { ".INTERRUPT", Interrupt, 0 }, 312 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 313 { ".JOIN", Attribute, OP_JOIN }, 314 { ".LIBS", Libs, 0 }, 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 static void ParseSetIncludedFile(void); 370 #ifdef SYSVINCLUDE 371 static void ParseTraditionalInclude(char *); 372 #endif 373 #ifdef GMAKEEXPORT 374 static void ParseGmakeExport(char *); 375 #endif 376 static int ParseEOF(void); 377 static char *ParseReadLine(void); 378 static void ParseFinishLine(void); 379 static void ParseMark(GNode *); 380 381 //////////////////////////////////////////////////////////// 382 // file loader 383 384 struct loadedfile { 385 const char *path; /* name, for error reports */ 386 char *buf; /* contents buffer */ 387 size_t len; /* length of contents */ 388 size_t maplen; /* length of mmap area, or 0 */ 389 Boolean used; /* XXX: have we used the data yet */ 390 }; 391 392 /* 393 * Constructor/destructor for loadedfile 394 */ 395 static struct loadedfile * 396 loadedfile_create(const char *path) 397 { 398 struct loadedfile *lf; 399 400 lf = bmake_malloc(sizeof(*lf)); 401 lf->path = (path == NULL ? "(stdin)" : path); 402 lf->buf = NULL; 403 lf->len = 0; 404 lf->maplen = 0; 405 lf->used = FALSE; 406 return lf; 407 } 408 409 static void 410 loadedfile_destroy(struct loadedfile *lf) 411 { 412 if (lf->buf != NULL) { 413 if (lf->maplen > 0) { 414 #ifdef HAVE_MMAP 415 munmap(lf->buf, lf->maplen); 416 #endif 417 } else { 418 free(lf->buf); 419 } 420 } 421 free(lf); 422 } 423 424 /* 425 * nextbuf() operation for loadedfile, as needed by the weird and twisted 426 * logic below. Once that's cleaned up, we can get rid of lf->used... 427 */ 428 static char * 429 loadedfile_nextbuf(void *x, size_t *len) 430 { 431 struct loadedfile *lf = x; 432 433 if (lf->used) { 434 return NULL; 435 } 436 lf->used = TRUE; 437 *len = lf->len; 438 return lf->buf; 439 } 440 441 /* 442 * Try to get the size of a file. 443 */ 444 static ReturnStatus 445 load_getsize(int fd, size_t *ret) 446 { 447 struct stat st; 448 449 if (fstat(fd, &st) < 0) { 450 return FAILURE; 451 } 452 453 if (!S_ISREG(st.st_mode)) { 454 return FAILURE; 455 } 456 457 /* 458 * st_size is an off_t, which is 64 bits signed; *ret is 459 * size_t, which might be 32 bits unsigned or 64 bits 460 * unsigned. Rather than being elaborate, just punt on 461 * files that are more than 2^31 bytes. We should never 462 * see a makefile that size in practice... 463 * 464 * While we're at it reject negative sizes too, just in case. 465 */ 466 if (st.st_size < 0 || st.st_size > 0x7fffffff) { 467 return FAILURE; 468 } 469 470 *ret = (size_t) st.st_size; 471 return SUCCESS; 472 } 473 474 /* 475 * Read in a file. 476 * 477 * Until the path search logic can be moved under here instead of 478 * being in the caller in another source file, we need to have the fd 479 * passed in already open. Bleh. 480 * 481 * If the path is NULL use stdin and (to insure against fd leaks) 482 * assert that the caller passed in -1. 483 */ 484 static struct loadedfile * 485 loadfile(const char *path, int fd) 486 { 487 struct loadedfile *lf; 488 #ifdef HAVE_MMAP 489 long pagesize; 490 #endif 491 ssize_t result; 492 size_t bufpos; 493 494 lf = loadedfile_create(path); 495 496 if (path == NULL) { 497 assert(fd == -1); 498 fd = STDIN_FILENO; 499 } else { 500 #if 0 /* notyet */ 501 fd = open(path, O_RDONLY); 502 if (fd < 0) { 503 ... 504 Error("%s: %s", path, strerror(errno)); 505 exit(1); 506 } 507 #endif 508 } 509 510 #ifdef HAVE_MMAP 511 if (load_getsize(fd, &lf->len) == SUCCESS) { 512 /* found a size, try mmap */ 513 #ifdef _SC_PAGESIZE 514 pagesize = sysconf(_SC_PAGESIZE); 515 #else 516 pagesize = 0; 517 #endif 518 if (pagesize <= 0) { 519 pagesize = 0x1000; 520 } 521 /* round size up to a page */ 522 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 523 524 /* 525 * XXX hack for dealing with empty files; remove when 526 * we're no longer limited by interfacing to the old 527 * logic elsewhere in this file. 528 */ 529 if (lf->maplen == 0) { 530 lf->maplen = pagesize; 531 } 532 533 /* 534 * FUTURE: remove PROT_WRITE when the parser no longer 535 * needs to scribble on the input. 536 */ 537 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 538 MAP_FILE|MAP_COPY, fd, 0); 539 if (lf->buf != MAP_FAILED) { 540 /* succeeded */ 541 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 542 char *b = malloc(lf->len + 1); 543 b[lf->len] = '\n'; 544 memcpy(b, lf->buf, lf->len++); 545 munmap(lf->buf, lf->maplen); 546 lf->maplen = 0; 547 lf->buf = b; 548 } 549 goto done; 550 } 551 } 552 #endif 553 /* cannot mmap; load the traditional way */ 554 555 lf->maplen = 0; 556 lf->len = 1024; 557 lf->buf = bmake_malloc(lf->len); 558 559 bufpos = 0; 560 while (1) { 561 assert(bufpos <= lf->len); 562 if (bufpos == lf->len) { 563 lf->len *= 2; 564 lf->buf = bmake_realloc(lf->buf, lf->len); 565 } 566 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 567 if (result < 0) { 568 Error("%s: read error: %s", path, strerror(errno)); 569 exit(1); 570 } 571 if (result == 0) { 572 break; 573 } 574 bufpos += result; 575 } 576 assert(bufpos <= lf->len); 577 lf->len = bufpos; 578 579 /* truncate malloc region to actual length (maybe not useful) */ 580 if (lf->len > 0) { 581 lf->buf = bmake_realloc(lf->buf, lf->len); 582 } 583 584 #ifdef HAVE_MMAP 585 done: 586 #endif 587 if (path != NULL) { 588 close(fd); 589 } 590 return lf; 591 } 592 593 //////////////////////////////////////////////////////////// 594 // old code 595 596 /*- 597 *---------------------------------------------------------------------- 598 * ParseIsEscaped -- 599 * Check if the current character is escaped on the current line 600 * 601 * Results: 602 * 0 if the character is not backslash escaped, 1 otherwise 603 * 604 * Side Effects: 605 * None 606 *---------------------------------------------------------------------- 607 */ 608 static int 609 ParseIsEscaped(const char *line, const char *c) 610 { 611 int active = 0; 612 for (;;) { 613 if (line == c) 614 return active; 615 if (*--c != '\\') 616 return active; 617 active = !active; 618 } 619 } 620 621 /*- 622 *---------------------------------------------------------------------- 623 * ParseFindKeyword -- 624 * Look in the table of keywords for one matching the given string. 625 * 626 * Input: 627 * str String to find 628 * 629 * Results: 630 * The index of the keyword, or -1 if it isn't there. 631 * 632 * Side Effects: 633 * None 634 *---------------------------------------------------------------------- 635 */ 636 static int 637 ParseFindKeyword(const char *str) 638 { 639 int start, end, cur; 640 int diff; 641 642 start = 0; 643 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 644 645 do { 646 cur = start + ((end - start) / 2); 647 diff = strcmp(str, parseKeywords[cur].name); 648 649 if (diff == 0) { 650 return (cur); 651 } else if (diff < 0) { 652 end = cur - 1; 653 } else { 654 start = cur + 1; 655 } 656 } while (start <= end); 657 return (-1); 658 } 659 660 /*- 661 * ParseVErrorInternal -- 662 * Error message abort function for parsing. Prints out the context 663 * of the error (line number and file) as well as the message with 664 * two optional arguments. 665 * 666 * Results: 667 * None 668 * 669 * Side Effects: 670 * "fatals" is incremented if the level is PARSE_FATAL. 671 */ 672 /* VARARGS */ 673 static void 674 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 675 const char *fmt, va_list ap) 676 { 677 static Boolean fatal_warning_error_printed = FALSE; 678 679 (void)fprintf(f, "%s: ", progname); 680 681 if (cfname != NULL) { 682 (void)fprintf(f, "\""); 683 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 684 char *cp; 685 const char *dir; 686 687 /* 688 * Nothing is more annoying than not knowing 689 * which Makefile is the culprit. 690 */ 691 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 692 if (dir == NULL || *dir == '\0' || 693 (*dir == '.' && dir[1] == '\0')) 694 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 695 if (dir == NULL) 696 dir = "."; 697 698 (void)fprintf(f, "%s/%s", dir, cfname); 699 } else 700 (void)fprintf(f, "%s", cfname); 701 702 (void)fprintf(f, "\" line %d: ", (int)clineno); 703 } 704 if (type == PARSE_WARNING) 705 (void)fprintf(f, "warning: "); 706 (void)vfprintf(f, fmt, ap); 707 (void)fprintf(f, "\n"); 708 (void)fflush(f); 709 if (type == PARSE_FATAL || parseWarnFatal) 710 fatals += 1; 711 if (parseWarnFatal && !fatal_warning_error_printed) { 712 Error("parsing warnings being treated as errors"); 713 fatal_warning_error_printed = TRUE; 714 } 715 } 716 717 /*- 718 * ParseErrorInternal -- 719 * Error function 720 * 721 * Results: 722 * None 723 * 724 * Side Effects: 725 * None 726 */ 727 /* VARARGS */ 728 static void 729 ParseErrorInternal(const char *cfname, size_t clineno, int type, 730 const char *fmt, ...) 731 { 732 va_list ap; 733 734 va_start(ap, fmt); 735 (void)fflush(stdout); 736 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 737 va_end(ap); 738 739 if (debug_file != stderr && debug_file != stdout) { 740 va_start(ap, fmt); 741 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 742 va_end(ap); 743 } 744 } 745 746 /*- 747 * Parse_Error -- 748 * External interface to ParseErrorInternal; uses the default filename 749 * Line number. 750 * 751 * Results: 752 * None 753 * 754 * Side Effects: 755 * None 756 */ 757 /* VARARGS */ 758 void 759 Parse_Error(int type, const char *fmt, ...) 760 { 761 va_list ap; 762 const char *fname; 763 size_t lineno; 764 765 if (curFile == NULL) { 766 fname = NULL; 767 lineno = 0; 768 } else { 769 fname = curFile->fname; 770 lineno = curFile->lineno; 771 } 772 773 va_start(ap, fmt); 774 (void)fflush(stdout); 775 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 776 va_end(ap); 777 778 if (debug_file != stderr && debug_file != stdout) { 779 va_start(ap, fmt); 780 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 781 va_end(ap); 782 } 783 } 784 785 786 /* 787 * ParseMessage 788 * Parse a .info .warning or .error directive 789 * 790 * The input is the line minus the ".". We substitute 791 * variables, print the message and exit(1) (for .error) or just print 792 * a warning if the directive is malformed. 793 */ 794 static Boolean 795 ParseMessage(char *line) 796 { 797 int mtype; 798 799 switch(*line) { 800 case 'i': 801 mtype = 0; 802 break; 803 case 'w': 804 mtype = PARSE_WARNING; 805 break; 806 case 'e': 807 mtype = PARSE_FATAL; 808 break; 809 default: 810 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 811 return FALSE; 812 } 813 814 while (isalpha((unsigned char)*line)) 815 line++; 816 if (!isspace((unsigned char)*line)) 817 return FALSE; /* not for us */ 818 while (isspace((unsigned char)*line)) 819 line++; 820 821 line = Var_Subst(NULL, line, VAR_CMD, VARF_WANTRES); 822 Parse_Error(mtype, "%s", line); 823 free(line); 824 825 if (mtype == PARSE_FATAL) { 826 /* Terminate immediately. */ 827 exit(1); 828 } 829 return TRUE; 830 } 831 832 /*- 833 *--------------------------------------------------------------------- 834 * ParseLinkSrc -- 835 * Link the parent node to its new child. Used in a Lst_ForEach by 836 * ParseDoDependency. If the specType isn't 'Not', the parent 837 * isn't linked as a parent of the child. 838 * 839 * Input: 840 * pgnp The parent node 841 * cgpn The child node 842 * 843 * Results: 844 * Always = 0 845 * 846 * Side Effects: 847 * New elements are added to the parents list of cgn and the 848 * children list of cgn. the unmade field of pgn is updated 849 * to reflect the additional child. 850 *--------------------------------------------------------------------- 851 */ 852 static int 853 ParseLinkSrc(void *pgnp, void *cgnp) 854 { 855 GNode *pgn = (GNode *)pgnp; 856 GNode *cgn = (GNode *)cgnp; 857 858 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 859 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 860 (void)Lst_AtEnd(pgn->children, cgn); 861 if (specType == Not) 862 (void)Lst_AtEnd(cgn->parents, pgn); 863 pgn->unmade += 1; 864 if (DEBUG(PARSE)) { 865 fprintf(debug_file, "# %s: added child %s - %s\n", __func__, 866 pgn->name, cgn->name); 867 Targ_PrintNode(pgn, 0); 868 Targ_PrintNode(cgn, 0); 869 } 870 return (0); 871 } 872 873 /*- 874 *--------------------------------------------------------------------- 875 * ParseDoOp -- 876 * Apply the parsed operator to the given target node. Used in a 877 * Lst_ForEach call by ParseDoDependency once all targets have 878 * been found and their operator parsed. If the previous and new 879 * operators are incompatible, a major error is taken. 880 * 881 * Input: 882 * gnp The node to which the operator is to be applied 883 * opp The operator to apply 884 * 885 * Results: 886 * Always 0 887 * 888 * Side Effects: 889 * The type field of the node is altered to reflect any new bits in 890 * the op. 891 *--------------------------------------------------------------------- 892 */ 893 static int 894 ParseDoOp(void *gnp, void *opp) 895 { 896 GNode *gn = (GNode *)gnp; 897 int op = *(int *)opp; 898 /* 899 * If the dependency mask of the operator and the node don't match and 900 * the node has actually had an operator applied to it before, and 901 * the operator actually has some dependency information in it, complain. 902 */ 903 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 904 !OP_NOP(gn->type) && !OP_NOP(op)) 905 { 906 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 907 return (1); 908 } 909 910 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 911 /* 912 * If the node was the object of a :: operator, we need to create a 913 * new instance of it for the children and commands on this dependency 914 * line. The new instance is placed on the 'cohorts' list of the 915 * initial one (note the initial one is not on its own cohorts list) 916 * and the new instance is linked to all parents of the initial 917 * instance. 918 */ 919 GNode *cohort; 920 921 /* 922 * Propagate copied bits to the initial node. They'll be propagated 923 * back to the rest of the cohorts later. 924 */ 925 gn->type |= op & ~OP_OPMASK; 926 927 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 928 if (doing_depend) 929 ParseMark(cohort); 930 /* 931 * Make the cohort invisible as well to avoid duplicating it into 932 * other variables. True, parents of this target won't tend to do 933 * anything with their local variables, but better safe than 934 * sorry. (I think this is pointless now, since the relevant list 935 * traversals will no longer see this node anyway. -mycroft) 936 */ 937 cohort->type = op | OP_INVISIBLE; 938 (void)Lst_AtEnd(gn->cohorts, cohort); 939 cohort->centurion = gn; 940 gn->unmade_cohorts += 1; 941 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 942 gn->unmade_cohorts); 943 } else { 944 /* 945 * We don't want to nuke any previous flags (whatever they were) so we 946 * just OR the new operator into the old 947 */ 948 gn->type |= op; 949 } 950 951 return (0); 952 } 953 954 /*- 955 *--------------------------------------------------------------------- 956 * ParseDoSrc -- 957 * Given the name of a source, figure out if it is an attribute 958 * and apply it to the targets if it is. Else decide if there is 959 * some attribute which should be applied *to* the source because 960 * of some special target and apply it if so. Otherwise, make the 961 * source be a child of the targets in the list 'targets' 962 * 963 * Input: 964 * tOp operator (if any) from special targets 965 * src name of the source to handle 966 * 967 * Results: 968 * None 969 * 970 * Side Effects: 971 * Operator bits may be added to the list of targets or to the source. 972 * The targets may have a new source added to their lists of children. 973 *--------------------------------------------------------------------- 974 */ 975 static void 976 ParseDoSrc(int tOp, const char *src) 977 { 978 GNode *gn = NULL; 979 static int wait_number = 0; 980 char wait_src[16]; 981 982 if (*src == '.' && isupper ((unsigned char)src[1])) { 983 int keywd = ParseFindKeyword(src); 984 if (keywd != -1) { 985 int op = parseKeywords[keywd].op; 986 if (op != 0) { 987 Lst_ForEach(targets, ParseDoOp, &op); 988 return; 989 } 990 if (parseKeywords[keywd].spec == Wait) { 991 /* 992 * We add a .WAIT node in the dependency list. 993 * After any dynamic dependencies (and filename globbing) 994 * have happened, it is given a dependency on the each 995 * previous child back to and previous .WAIT node. 996 * The next child won't be scheduled until the .WAIT node 997 * is built. 998 * We give each .WAIT node a unique name (mainly for diag). 999 */ 1000 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 1001 gn = Targ_FindNode(wait_src, TARG_NOHASH); 1002 if (doing_depend) 1003 ParseMark(gn); 1004 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 1005 Lst_ForEach(targets, ParseLinkSrc, gn); 1006 return; 1007 } 1008 } 1009 } 1010 1011 switch (specType) { 1012 case Main: 1013 /* 1014 * If we have noted the existence of a .MAIN, it means we need 1015 * to add the sources of said target to the list of things 1016 * to create. The string 'src' is likely to be free, so we 1017 * must make a new copy of it. Note that this will only be 1018 * invoked if the user didn't specify a target on the command 1019 * line. This is to allow #ifmake's to succeed, or something... 1020 */ 1021 (void)Lst_AtEnd(create, bmake_strdup(src)); 1022 /* 1023 * Add the name to the .TARGETS variable as well, so the user can 1024 * employ that, if desired. 1025 */ 1026 Var_Append(".TARGETS", src, VAR_GLOBAL); 1027 return; 1028 1029 case Order: 1030 /* 1031 * Create proper predecessor/successor links between the previous 1032 * source and the current one. 1033 */ 1034 gn = Targ_FindNode(src, TARG_CREATE); 1035 if (doing_depend) 1036 ParseMark(gn); 1037 if (predecessor != NULL) { 1038 (void)Lst_AtEnd(predecessor->order_succ, gn); 1039 (void)Lst_AtEnd(gn->order_pred, predecessor); 1040 if (DEBUG(PARSE)) { 1041 fprintf(debug_file, "# %s: added Order dependency %s - %s\n", 1042 __func__, predecessor->name, gn->name); 1043 Targ_PrintNode(predecessor, 0); 1044 Targ_PrintNode(gn, 0); 1045 } 1046 } 1047 /* 1048 * The current source now becomes the predecessor for the next one. 1049 */ 1050 predecessor = gn; 1051 break; 1052 1053 default: 1054 /* 1055 * If the source is not an attribute, we need to find/create 1056 * a node for it. After that we can apply any operator to it 1057 * from a special target or link it to its parents, as 1058 * appropriate. 1059 * 1060 * In the case of a source that was the object of a :: operator, 1061 * the attribute is applied to all of its instances (as kept in 1062 * the 'cohorts' list of the node) or all the cohorts are linked 1063 * to all the targets. 1064 */ 1065 1066 /* Find/create the 'src' node and attach to all targets */ 1067 gn = Targ_FindNode(src, TARG_CREATE); 1068 if (doing_depend) 1069 ParseMark(gn); 1070 if (tOp) { 1071 gn->type |= tOp; 1072 } else { 1073 Lst_ForEach(targets, ParseLinkSrc, gn); 1074 } 1075 break; 1076 } 1077 } 1078 1079 /*- 1080 *----------------------------------------------------------------------- 1081 * ParseFindMain -- 1082 * Find a real target in the list and set it to be the main one. 1083 * Called by ParseDoDependency when a main target hasn't been found 1084 * yet. 1085 * 1086 * Input: 1087 * gnp Node to examine 1088 * 1089 * Results: 1090 * 0 if main not found yet, 1 if it is. 1091 * 1092 * Side Effects: 1093 * mainNode is changed and Targ_SetMain is called. 1094 * 1095 *----------------------------------------------------------------------- 1096 */ 1097 static int 1098 ParseFindMain(void *gnp, void *dummy) 1099 { 1100 GNode *gn = (GNode *)gnp; 1101 if ((gn->type & OP_NOTARGET) == 0) { 1102 mainNode = gn; 1103 Targ_SetMain(gn); 1104 return (dummy ? 1 : 1); 1105 } else { 1106 return (dummy ? 0 : 0); 1107 } 1108 } 1109 1110 /*- 1111 *----------------------------------------------------------------------- 1112 * ParseAddDir -- 1113 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1114 * 1115 * Results: 1116 * === 0 1117 * 1118 * Side Effects: 1119 * See Dir_AddDir. 1120 * 1121 *----------------------------------------------------------------------- 1122 */ 1123 static int 1124 ParseAddDir(void *path, void *name) 1125 { 1126 (void)Dir_AddDir((Lst) path, (char *)name); 1127 return(0); 1128 } 1129 1130 /*- 1131 *----------------------------------------------------------------------- 1132 * ParseClearPath -- 1133 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1134 * 1135 * Results: 1136 * === 0 1137 * 1138 * Side Effects: 1139 * See Dir_ClearPath 1140 * 1141 *----------------------------------------------------------------------- 1142 */ 1143 static int 1144 ParseClearPath(void *path, void *dummy) 1145 { 1146 Dir_ClearPath((Lst) path); 1147 return(dummy ? 0 : 0); 1148 } 1149 1150 /*- 1151 *--------------------------------------------------------------------- 1152 * ParseDoDependency -- 1153 * Parse the dependency line in line. 1154 * 1155 * Input: 1156 * line the line to parse 1157 * 1158 * Results: 1159 * None 1160 * 1161 * Side Effects: 1162 * The nodes of the sources are linked as children to the nodes of the 1163 * targets. Some nodes may be created. 1164 * 1165 * We parse a dependency line by first extracting words from the line and 1166 * finding nodes in the list of all targets with that name. This is done 1167 * until a character is encountered which is an operator character. Currently 1168 * these are only ! and :. At this point the operator is parsed and the 1169 * pointer into the line advanced until the first source is encountered. 1170 * The parsed operator is applied to each node in the 'targets' list, 1171 * which is where the nodes found for the targets are kept, by means of 1172 * the ParseDoOp function. 1173 * The sources are read in much the same way as the targets were except 1174 * that now they are expanded using the wildcarding scheme of the C-Shell 1175 * and all instances of the resulting words in the list of all targets 1176 * are found. Each of the resulting nodes is then linked to each of the 1177 * targets as one of its children. 1178 * Certain targets are handled specially. These are the ones detailed 1179 * by the specType variable. 1180 * The storing of transformation rules is also taken care of here. 1181 * A target is recognized as a transformation rule by calling 1182 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1183 * from the suffix module via Suff_AddTransform rather than the standard 1184 * Targ_FindNode in the target module. 1185 *--------------------------------------------------------------------- 1186 */ 1187 static void 1188 ParseDoDependency(char *line) 1189 { 1190 char *cp; /* our current position */ 1191 GNode *gn = NULL; /* a general purpose temporary node */ 1192 int op; /* the operator on the line */ 1193 char savec; /* a place to save a character */ 1194 Lst paths; /* List of search paths to alter when parsing 1195 * a list of .PATH targets */ 1196 int tOp; /* operator from special target */ 1197 Lst sources; /* list of archive source names after 1198 * expansion */ 1199 Lst curTargs; /* list of target names to be found and added 1200 * to the targets list */ 1201 char *lstart = line; 1202 1203 if (DEBUG(PARSE)) 1204 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1205 tOp = 0; 1206 1207 specType = Not; 1208 paths = NULL; 1209 1210 curTargs = Lst_Init(FALSE); 1211 1212 /* 1213 * First, grind through the targets. 1214 */ 1215 1216 do { 1217 /* 1218 * Here LINE points to the beginning of the next word, and 1219 * LSTART points to the actual beginning of the line. 1220 */ 1221 1222 /* Find the end of the next word. */ 1223 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1224 !(isspace((unsigned char)*cp) || 1225 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1226 cp++) { 1227 if (*cp == '$') { 1228 /* 1229 * Must be a dynamic source (would have been expanded 1230 * otherwise), so call the Var module to parse the puppy 1231 * so we can safely advance beyond it...There should be 1232 * no errors in this, as they would have been discovered 1233 * in the initial Var_Subst and we wouldn't be here. 1234 */ 1235 int length; 1236 void *freeIt; 1237 1238 (void)Var_Parse(cp, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES, 1239 &length, &freeIt); 1240 free(freeIt); 1241 cp += length-1; 1242 } 1243 } 1244 1245 /* 1246 * If the word is followed by a left parenthesis, it's the 1247 * name of an object file inside an archive (ar file). 1248 */ 1249 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1250 /* 1251 * Archives must be handled specially to make sure the OP_ARCHV 1252 * flag is set in their 'type' field, for one thing, and because 1253 * things like "archive(file1.o file2.o file3.o)" are permissible. 1254 * Arch_ParseArchive will set 'line' to be the first non-blank 1255 * after the archive-spec. It creates/finds nodes for the members 1256 * and places them on the given list, returning SUCCESS if all 1257 * went well and FAILURE if there was an error in the 1258 * specification. On error, line should remain untouched. 1259 */ 1260 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1261 Parse_Error(PARSE_FATAL, 1262 "Error in archive specification: \"%s\"", line); 1263 goto out; 1264 } else { 1265 /* Done with this word; on to the next. */ 1266 cp = line; 1267 continue; 1268 } 1269 } 1270 1271 if (!*cp) { 1272 /* 1273 * We got to the end of the line while we were still 1274 * looking at targets. 1275 * 1276 * Ending a dependency line without an operator is a Bozo 1277 * no-no. As a heuristic, this is also often triggered by 1278 * undetected conflicts from cvs/rcs merges. 1279 */ 1280 if ((strncmp(line, "<<<<<<", 6) == 0) || 1281 (strncmp(line, "======", 6) == 0) || 1282 (strncmp(line, ">>>>>>", 6) == 0)) 1283 Parse_Error(PARSE_FATAL, 1284 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1285 else 1286 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1287 : "Need an operator"); 1288 goto out; 1289 } 1290 1291 /* Insert a null terminator. */ 1292 savec = *cp; 1293 *cp = '\0'; 1294 1295 /* 1296 * Got the word. See if it's a special target and if so set 1297 * specType to match it. 1298 */ 1299 if (*line == '.' && isupper ((unsigned char)line[1])) { 1300 /* 1301 * See if the target is a special target that must have it 1302 * or its sources handled specially. 1303 */ 1304 int keywd = ParseFindKeyword(line); 1305 if (keywd != -1) { 1306 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1307 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1308 goto out; 1309 } 1310 1311 specType = parseKeywords[keywd].spec; 1312 tOp = parseKeywords[keywd].op; 1313 1314 /* 1315 * Certain special targets have special semantics: 1316 * .PATH Have to set the dirSearchPath 1317 * variable too 1318 * .MAIN Its sources are only used if 1319 * nothing has been specified to 1320 * create. 1321 * .DEFAULT Need to create a node to hang 1322 * commands on, but we don't want 1323 * it in the graph, nor do we want 1324 * it to be the Main Target, so we 1325 * create it, set OP_NOTMAIN and 1326 * add it to the list, setting 1327 * DEFAULT to the new node for 1328 * later use. We claim the node is 1329 * A transformation rule to make 1330 * life easier later, when we'll 1331 * use Make_HandleUse to actually 1332 * apply the .DEFAULT commands. 1333 * .PHONY The list of targets 1334 * .NOPATH Don't search for file in the path 1335 * .STALE 1336 * .BEGIN 1337 * .END 1338 * .ERROR 1339 * .DELETE_ON_ERROR 1340 * .INTERRUPT Are not to be considered the 1341 * main target. 1342 * .NOTPARALLEL Make only one target at a time. 1343 * .SINGLESHELL Create a shell for each command. 1344 * .ORDER Must set initial predecessor to NULL 1345 */ 1346 switch (specType) { 1347 case ExPath: 1348 if (paths == NULL) { 1349 paths = Lst_Init(FALSE); 1350 } 1351 (void)Lst_AtEnd(paths, dirSearchPath); 1352 break; 1353 case Main: 1354 if (!Lst_IsEmpty(create)) { 1355 specType = Not; 1356 } 1357 break; 1358 case Begin: 1359 case End: 1360 case Stale: 1361 case dotError: 1362 case Interrupt: 1363 gn = Targ_FindNode(line, TARG_CREATE); 1364 if (doing_depend) 1365 ParseMark(gn); 1366 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1367 (void)Lst_AtEnd(targets, gn); 1368 break; 1369 case Default: 1370 gn = Targ_NewGN(".DEFAULT"); 1371 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1372 (void)Lst_AtEnd(targets, gn); 1373 DEFAULT = gn; 1374 break; 1375 case DeleteOnError: 1376 deleteOnError = TRUE; 1377 break; 1378 case NotParallel: 1379 maxJobs = 1; 1380 break; 1381 case SingleShell: 1382 compatMake = TRUE; 1383 break; 1384 case Order: 1385 predecessor = NULL; 1386 break; 1387 default: 1388 break; 1389 } 1390 } else if (strncmp(line, ".PATH", 5) == 0) { 1391 /* 1392 * .PATH<suffix> has to be handled specially. 1393 * Call on the suffix module to give us a path to 1394 * modify. 1395 */ 1396 Lst path; 1397 1398 specType = ExPath; 1399 path = Suff_GetPath(&line[5]); 1400 if (path == NULL) { 1401 Parse_Error(PARSE_FATAL, 1402 "Suffix '%s' not defined (yet)", 1403 &line[5]); 1404 goto out; 1405 } else { 1406 if (paths == NULL) { 1407 paths = Lst_Init(FALSE); 1408 } 1409 (void)Lst_AtEnd(paths, path); 1410 } 1411 } 1412 } 1413 1414 /* 1415 * Have word in line. Get or create its node and stick it at 1416 * the end of the targets list 1417 */ 1418 if ((specType == Not) && (*line != '\0')) { 1419 if (Dir_HasWildcards(line)) { 1420 /* 1421 * Targets are to be sought only in the current directory, 1422 * so create an empty path for the thing. Note we need to 1423 * use Dir_Destroy in the destruction of the path as the 1424 * Dir module could have added a directory to the path... 1425 */ 1426 Lst emptyPath = Lst_Init(FALSE); 1427 1428 Dir_Expand(line, emptyPath, curTargs); 1429 1430 Lst_Destroy(emptyPath, Dir_Destroy); 1431 } else { 1432 /* 1433 * No wildcards, but we want to avoid code duplication, 1434 * so create a list with the word on it. 1435 */ 1436 (void)Lst_AtEnd(curTargs, line); 1437 } 1438 1439 /* Apply the targets. */ 1440 1441 while(!Lst_IsEmpty(curTargs)) { 1442 char *targName = (char *)Lst_DeQueue(curTargs); 1443 1444 if (!Suff_IsTransform (targName)) { 1445 gn = Targ_FindNode(targName, TARG_CREATE); 1446 } else { 1447 gn = Suff_AddTransform(targName); 1448 } 1449 if (doing_depend) 1450 ParseMark(gn); 1451 1452 (void)Lst_AtEnd(targets, gn); 1453 } 1454 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1455 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1456 } 1457 1458 /* Don't need the inserted null terminator any more. */ 1459 *cp = savec; 1460 1461 /* 1462 * If it is a special type and not .PATH, it's the only target we 1463 * allow on this line... 1464 */ 1465 if (specType != Not && specType != ExPath) { 1466 Boolean warning = FALSE; 1467 1468 while (*cp && (ParseIsEscaped(lstart, cp) || 1469 ((*cp != '!') && (*cp != ':')))) { 1470 if (ParseIsEscaped(lstart, cp) || 1471 (*cp != ' ' && *cp != '\t')) { 1472 warning = TRUE; 1473 } 1474 cp++; 1475 } 1476 if (warning) { 1477 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1478 } 1479 } else { 1480 while (*cp && isspace ((unsigned char)*cp)) { 1481 cp++; 1482 } 1483 } 1484 line = cp; 1485 } while (*line && (ParseIsEscaped(lstart, line) || 1486 ((*line != '!') && (*line != ':')))); 1487 1488 /* 1489 * Don't need the list of target names anymore... 1490 */ 1491 Lst_Destroy(curTargs, NULL); 1492 curTargs = NULL; 1493 1494 if (!Lst_IsEmpty(targets)) { 1495 switch(specType) { 1496 default: 1497 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1498 break; 1499 case Default: 1500 case Stale: 1501 case Begin: 1502 case End: 1503 case dotError: 1504 case Interrupt: 1505 /* 1506 * These four create nodes on which to hang commands, so 1507 * targets shouldn't be empty... 1508 */ 1509 case Not: 1510 /* 1511 * Nothing special here -- targets can be empty if it wants. 1512 */ 1513 break; 1514 } 1515 } 1516 1517 /* 1518 * Have now parsed all the target names. Must parse the operator next. The 1519 * result is left in op . 1520 */ 1521 if (*cp == '!') { 1522 op = OP_FORCE; 1523 } else if (*cp == ':') { 1524 if (cp[1] == ':') { 1525 op = OP_DOUBLEDEP; 1526 cp++; 1527 } else { 1528 op = OP_DEPENDS; 1529 } 1530 } else { 1531 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1532 : "Missing dependency operator"); 1533 goto out; 1534 } 1535 1536 /* Advance beyond the operator */ 1537 cp++; 1538 1539 /* 1540 * Apply the operator to the target. This is how we remember which 1541 * operator a target was defined with. It fails if the operator 1542 * used isn't consistent across all references. 1543 */ 1544 Lst_ForEach(targets, ParseDoOp, &op); 1545 1546 /* 1547 * Onward to the sources. 1548 * 1549 * LINE will now point to the first source word, if any, or the 1550 * end of the string if not. 1551 */ 1552 while (*cp && isspace ((unsigned char)*cp)) { 1553 cp++; 1554 } 1555 line = cp; 1556 1557 /* 1558 * Several special targets take different actions if present with no 1559 * sources: 1560 * a .SUFFIXES line with no sources clears out all old suffixes 1561 * a .PRECIOUS line makes all targets precious 1562 * a .IGNORE line ignores errors for all targets 1563 * a .SILENT line creates silence when making all targets 1564 * a .PATH removes all directories from the search path(s). 1565 */ 1566 if (!*line) { 1567 switch (specType) { 1568 case Suffixes: 1569 Suff_ClearSuffixes(); 1570 break; 1571 case Precious: 1572 allPrecious = TRUE; 1573 break; 1574 case Ignore: 1575 ignoreErrors = TRUE; 1576 break; 1577 case Silent: 1578 beSilent = TRUE; 1579 break; 1580 case ExPath: 1581 Lst_ForEach(paths, ParseClearPath, NULL); 1582 Dir_SetPATH(); 1583 break; 1584 #ifdef POSIX 1585 case Posix: 1586 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1587 break; 1588 #endif 1589 default: 1590 break; 1591 } 1592 } else if (specType == MFlags) { 1593 /* 1594 * Call on functions in main.c to deal with these arguments and 1595 * set the initial character to a null-character so the loop to 1596 * get sources won't get anything 1597 */ 1598 Main_ParseArgLine(line); 1599 *line = '\0'; 1600 } else if (specType == ExShell) { 1601 if (Job_ParseShell(line) != SUCCESS) { 1602 Parse_Error(PARSE_FATAL, "improper shell specification"); 1603 goto out; 1604 } 1605 *line = '\0'; 1606 } else if ((specType == NotParallel) || (specType == SingleShell) || 1607 (specType == DeleteOnError)) { 1608 *line = '\0'; 1609 } 1610 1611 /* 1612 * NOW GO FOR THE SOURCES 1613 */ 1614 if ((specType == Suffixes) || (specType == ExPath) || 1615 (specType == Includes) || (specType == Libs) || 1616 (specType == Null) || (specType == ExObjdir)) 1617 { 1618 while (*line) { 1619 /* 1620 * If the target was one that doesn't take files as its sources 1621 * but takes something like suffixes, we take each 1622 * space-separated word on the line as a something and deal 1623 * with it accordingly. 1624 * 1625 * If the target was .SUFFIXES, we take each source as a 1626 * suffix and add it to the list of suffixes maintained by the 1627 * Suff module. 1628 * 1629 * If the target was a .PATH, we add the source as a directory 1630 * to search on the search path. 1631 * 1632 * If it was .INCLUDES, the source is taken to be the suffix of 1633 * files which will be #included and whose search path should 1634 * be present in the .INCLUDES variable. 1635 * 1636 * If it was .LIBS, the source is taken to be the suffix of 1637 * files which are considered libraries and whose search path 1638 * should be present in the .LIBS variable. 1639 * 1640 * If it was .NULL, the source is the suffix to use when a file 1641 * has no valid suffix. 1642 * 1643 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1644 * and will cause make to do a new chdir to that path. 1645 */ 1646 while (*cp && !isspace ((unsigned char)*cp)) { 1647 cp++; 1648 } 1649 savec = *cp; 1650 *cp = '\0'; 1651 switch (specType) { 1652 case Suffixes: 1653 Suff_AddSuffix(line, &mainNode); 1654 break; 1655 case ExPath: 1656 Lst_ForEach(paths, ParseAddDir, line); 1657 break; 1658 case Includes: 1659 Suff_AddInclude(line); 1660 break; 1661 case Libs: 1662 Suff_AddLib(line); 1663 break; 1664 case Null: 1665 Suff_SetNull(line); 1666 break; 1667 case ExObjdir: 1668 Main_SetObjdir("%s", line); 1669 break; 1670 default: 1671 break; 1672 } 1673 *cp = savec; 1674 if (savec != '\0') { 1675 cp++; 1676 } 1677 while (*cp && isspace ((unsigned char)*cp)) { 1678 cp++; 1679 } 1680 line = cp; 1681 } 1682 if (paths) { 1683 Lst_Destroy(paths, NULL); 1684 } 1685 if (specType == ExPath) 1686 Dir_SetPATH(); 1687 } else { 1688 while (*line) { 1689 /* 1690 * The targets take real sources, so we must beware of archive 1691 * specifications (i.e. things with left parentheses in them) 1692 * and handle them accordingly. 1693 */ 1694 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1695 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1696 /* 1697 * Only stop for a left parenthesis if it isn't at the 1698 * start of a word (that'll be for variable changes 1699 * later) and isn't preceded by a dollar sign (a dynamic 1700 * source). 1701 */ 1702 break; 1703 } 1704 } 1705 1706 if (*cp == LPAREN) { 1707 sources = Lst_Init(FALSE); 1708 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1709 Parse_Error(PARSE_FATAL, 1710 "Error in source archive spec \"%s\"", line); 1711 goto out; 1712 } 1713 1714 while (!Lst_IsEmpty (sources)) { 1715 gn = (GNode *)Lst_DeQueue(sources); 1716 ParseDoSrc(tOp, gn->name); 1717 } 1718 Lst_Destroy(sources, NULL); 1719 cp = line; 1720 } else { 1721 if (*cp) { 1722 *cp = '\0'; 1723 cp += 1; 1724 } 1725 1726 ParseDoSrc(tOp, line); 1727 } 1728 while (*cp && isspace ((unsigned char)*cp)) { 1729 cp++; 1730 } 1731 line = cp; 1732 } 1733 } 1734 1735 if (mainNode == NULL) { 1736 /* 1737 * If we have yet to decide on a main target to make, in the 1738 * absence of any user input, we want the first target on 1739 * the first dependency line that is actually a real target 1740 * (i.e. isn't a .USE or .EXEC rule) to be made. 1741 */ 1742 Lst_ForEach(targets, ParseFindMain, NULL); 1743 } 1744 1745 out: 1746 if (curTargs) 1747 Lst_Destroy(curTargs, NULL); 1748 } 1749 1750 /*- 1751 *--------------------------------------------------------------------- 1752 * Parse_IsVar -- 1753 * Return TRUE if the passed line is a variable assignment. A variable 1754 * assignment consists of a single word followed by optional whitespace 1755 * followed by either a += or an = operator. 1756 * This function is used both by the Parse_File function and main when 1757 * parsing the command-line arguments. 1758 * 1759 * Input: 1760 * line the line to check 1761 * 1762 * Results: 1763 * TRUE if it is. FALSE if it ain't 1764 * 1765 * Side Effects: 1766 * none 1767 *--------------------------------------------------------------------- 1768 */ 1769 Boolean 1770 Parse_IsVar(char *line) 1771 { 1772 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1773 char ch; 1774 int level = 0; 1775 #define ISEQOPERATOR(c) \ 1776 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1777 1778 /* 1779 * Skip to variable name 1780 */ 1781 for (;(*line == ' ') || (*line == '\t'); line++) 1782 continue; 1783 1784 /* Scan for one of the assignment operators outside a variable expansion */ 1785 while ((ch = *line++) != 0) { 1786 if (ch == '(' || ch == '{') { 1787 level++; 1788 continue; 1789 } 1790 if (ch == ')' || ch == '}') { 1791 level--; 1792 continue; 1793 } 1794 if (level != 0) 1795 continue; 1796 while (ch == ' ' || ch == '\t') { 1797 ch = *line++; 1798 wasSpace = TRUE; 1799 } 1800 #ifdef SUNSHCMD 1801 if (ch == ':' && strncmp(line, "sh", 2) == 0) { 1802 line += 2; 1803 continue; 1804 } 1805 #endif 1806 if (ch == '=') 1807 return TRUE; 1808 if (*line == '=' && ISEQOPERATOR(ch)) 1809 return TRUE; 1810 if (wasSpace) 1811 return FALSE; 1812 } 1813 1814 return FALSE; 1815 } 1816 1817 /*- 1818 *--------------------------------------------------------------------- 1819 * Parse_DoVar -- 1820 * Take the variable assignment in the passed line and do it in the 1821 * global context. 1822 * 1823 * Note: There is a lexical ambiguity with assignment modifier characters 1824 * in variable names. This routine interprets the character before the = 1825 * as a modifier. Therefore, an assignment like 1826 * C++=/usr/bin/CC 1827 * is interpreted as "C+ +=" instead of "C++ =". 1828 * 1829 * Input: 1830 * line a line guaranteed to be a variable assignment. 1831 * This reduces error checks 1832 * ctxt Context in which to do the assignment 1833 * 1834 * Results: 1835 * none 1836 * 1837 * Side Effects: 1838 * the variable structure of the given variable name is altered in the 1839 * global context. 1840 *--------------------------------------------------------------------- 1841 */ 1842 void 1843 Parse_DoVar(char *line, GNode *ctxt) 1844 { 1845 char *cp; /* pointer into line */ 1846 enum { 1847 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1848 } type; /* Type of assignment */ 1849 char *opc; /* ptr to operator character to 1850 * null-terminate the variable name */ 1851 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1852 * i.e. if any variable expansion was 1853 * performed */ 1854 int depth; 1855 1856 /* 1857 * Skip to variable name 1858 */ 1859 while ((*line == ' ') || (*line == '\t')) { 1860 line++; 1861 } 1862 1863 /* 1864 * Skip to operator character, nulling out whitespace as we go 1865 * XXX Rather than counting () and {} we should look for $ and 1866 * then expand the variable. 1867 */ 1868 for (depth = 0, cp = line + 1; depth > 0 || *cp != '='; cp++) { 1869 if (*cp == '(' || *cp == '{') { 1870 depth++; 1871 continue; 1872 } 1873 if (*cp == ')' || *cp == '}') { 1874 depth--; 1875 continue; 1876 } 1877 if (depth == 0 && isspace ((unsigned char)*cp)) { 1878 *cp = '\0'; 1879 } 1880 } 1881 opc = cp-1; /* operator is the previous character */ 1882 *cp++ = '\0'; /* nuke the = */ 1883 1884 /* 1885 * Check operator type 1886 */ 1887 switch (*opc) { 1888 case '+': 1889 type = VAR_APPEND; 1890 *opc = '\0'; 1891 break; 1892 1893 case '?': 1894 /* 1895 * If the variable already has a value, we don't do anything. 1896 */ 1897 *opc = '\0'; 1898 if (Var_Exists(line, ctxt)) { 1899 return; 1900 } else { 1901 type = VAR_NORMAL; 1902 } 1903 break; 1904 1905 case ':': 1906 type = VAR_SUBST; 1907 *opc = '\0'; 1908 break; 1909 1910 case '!': 1911 type = VAR_SHELL; 1912 *opc = '\0'; 1913 break; 1914 1915 default: 1916 #ifdef SUNSHCMD 1917 while (opc > line && *opc != ':') 1918 opc--; 1919 1920 if (strncmp(opc, ":sh", 3) == 0) { 1921 type = VAR_SHELL; 1922 *opc = '\0'; 1923 break; 1924 } 1925 #endif 1926 type = VAR_NORMAL; 1927 break; 1928 } 1929 1930 while (isspace ((unsigned char)*cp)) { 1931 cp++; 1932 } 1933 1934 if (type == VAR_APPEND) { 1935 Var_Append(line, cp, ctxt); 1936 } else if (type == VAR_SUBST) { 1937 /* 1938 * Allow variables in the old value to be undefined, but leave their 1939 * invocation alone -- this is done by forcing oldVars to be false. 1940 * XXX: This can cause recursive variables, but that's not hard to do, 1941 * and this allows someone to do something like 1942 * 1943 * CFLAGS = $(.INCLUDES) 1944 * CFLAGS := -I.. $(CFLAGS) 1945 * 1946 * And not get an error. 1947 */ 1948 Boolean oldOldVars = oldVars; 1949 1950 oldVars = FALSE; 1951 1952 /* 1953 * make sure that we set the variable the first time to nothing 1954 * so that it gets substituted! 1955 */ 1956 if (!Var_Exists(line, ctxt)) 1957 Var_Set(line, "", ctxt, 0); 1958 1959 cp = Var_Subst(NULL, cp, ctxt, VARF_WANTRES|VARF_ASSIGN); 1960 oldVars = oldOldVars; 1961 freeCp = TRUE; 1962 1963 Var_Set(line, cp, ctxt, 0); 1964 } else if (type == VAR_SHELL) { 1965 char *res; 1966 const char *error; 1967 1968 if (strchr(cp, '$') != NULL) { 1969 /* 1970 * There's a dollar sign in the command, so perform variable 1971 * expansion on the whole thing. The resulting string will need 1972 * freeing when we're done, so set freeCmd to TRUE. 1973 */ 1974 cp = Var_Subst(NULL, cp, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES); 1975 freeCp = TRUE; 1976 } 1977 1978 res = Cmd_Exec(cp, &error); 1979 Var_Set(line, res, ctxt, 0); 1980 free(res); 1981 1982 if (error) 1983 Parse_Error(PARSE_WARNING, error, cp); 1984 } else { 1985 /* 1986 * Normal assignment -- just do it. 1987 */ 1988 Var_Set(line, cp, ctxt, 0); 1989 } 1990 if (strcmp(line, MAKEOVERRIDES) == 0) 1991 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1992 else if (strcmp(line, ".CURDIR") == 0) { 1993 /* 1994 * Somone is being (too?) clever... 1995 * Let's pretend they know what they are doing and 1996 * re-initialize the 'cur' Path. 1997 */ 1998 Dir_InitCur(cp); 1999 Dir_SetPATH(); 2000 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 2001 Job_SetPrefix(); 2002 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 2003 Var_Export(cp, 0); 2004 } 2005 if (freeCp) 2006 free(cp); 2007 } 2008 2009 2010 /* 2011 * ParseMaybeSubMake -- 2012 * Scan the command string to see if it a possible submake node 2013 * Input: 2014 * cmd the command to scan 2015 * Results: 2016 * TRUE if the command is possibly a submake, FALSE if not. 2017 */ 2018 static Boolean 2019 ParseMaybeSubMake(const char *cmd) 2020 { 2021 size_t i; 2022 static struct { 2023 const char *name; 2024 size_t len; 2025 } vals[] = { 2026 #define MKV(A) { A, sizeof(A) - 1 } 2027 MKV("${MAKE}"), 2028 MKV("${.MAKE}"), 2029 MKV("$(MAKE)"), 2030 MKV("$(.MAKE)"), 2031 MKV("make"), 2032 }; 2033 for (i = 0; i < sizeof(vals)/sizeof(vals[0]); i++) { 2034 char *ptr; 2035 if ((ptr = strstr(cmd, vals[i].name)) == NULL) 2036 continue; 2037 if ((ptr == cmd || !isalnum((unsigned char)ptr[-1])) 2038 && !isalnum((unsigned char)ptr[vals[i].len])) 2039 return TRUE; 2040 } 2041 return FALSE; 2042 } 2043 2044 /*- 2045 * ParseAddCmd -- 2046 * Lst_ForEach function to add a command line to all targets 2047 * 2048 * Input: 2049 * gnp the node to which the command is to be added 2050 * cmd the command to add 2051 * 2052 * Results: 2053 * Always 0 2054 * 2055 * Side Effects: 2056 * A new element is added to the commands list of the node, 2057 * and the node can be marked as a submake node if the command is 2058 * determined to be that. 2059 */ 2060 static int 2061 ParseAddCmd(void *gnp, void *cmd) 2062 { 2063 GNode *gn = (GNode *)gnp; 2064 2065 /* Add to last (ie current) cohort for :: targets */ 2066 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 2067 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 2068 2069 /* if target already supplied, ignore commands */ 2070 if (!(gn->type & OP_HAS_COMMANDS)) { 2071 (void)Lst_AtEnd(gn->commands, cmd); 2072 if (ParseMaybeSubMake(cmd)) 2073 gn->type |= OP_SUBMAKE; 2074 ParseMark(gn); 2075 } else { 2076 #ifdef notyet 2077 /* XXX: We cannot do this until we fix the tree */ 2078 (void)Lst_AtEnd(gn->commands, cmd); 2079 Parse_Error(PARSE_WARNING, 2080 "overriding commands for target \"%s\"; " 2081 "previous commands defined at %s: %d ignored", 2082 gn->name, gn->fname, gn->lineno); 2083 #else 2084 Parse_Error(PARSE_WARNING, 2085 "duplicate script for target \"%s\" ignored", 2086 gn->name); 2087 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 2088 "using previous script for \"%s\" defined here", 2089 gn->name); 2090 #endif 2091 } 2092 return(0); 2093 } 2094 2095 /*- 2096 *----------------------------------------------------------------------- 2097 * ParseHasCommands -- 2098 * Callback procedure for Parse_File when destroying the list of 2099 * targets on the last dependency line. Marks a target as already 2100 * having commands if it does, to keep from having shell commands 2101 * on multiple dependency lines. 2102 * 2103 * Input: 2104 * gnp Node to examine 2105 * 2106 * Results: 2107 * None 2108 * 2109 * Side Effects: 2110 * OP_HAS_COMMANDS may be set for the target. 2111 * 2112 *----------------------------------------------------------------------- 2113 */ 2114 static void 2115 ParseHasCommands(void *gnp) 2116 { 2117 GNode *gn = (GNode *)gnp; 2118 if (!Lst_IsEmpty(gn->commands)) { 2119 gn->type |= OP_HAS_COMMANDS; 2120 } 2121 } 2122 2123 /*- 2124 *----------------------------------------------------------------------- 2125 * Parse_AddIncludeDir -- 2126 * Add a directory to the path searched for included makefiles 2127 * bracketed by double-quotes. Used by functions in main.c 2128 * 2129 * Input: 2130 * dir The name of the directory to add 2131 * 2132 * Results: 2133 * None. 2134 * 2135 * Side Effects: 2136 * The directory is appended to the list. 2137 * 2138 *----------------------------------------------------------------------- 2139 */ 2140 void 2141 Parse_AddIncludeDir(char *dir) 2142 { 2143 (void)Dir_AddDir(parseIncPath, dir); 2144 } 2145 2146 /*- 2147 *--------------------------------------------------------------------- 2148 * ParseDoInclude -- 2149 * Push to another file. 2150 * 2151 * The input is the line minus the `.'. A file spec is a string 2152 * enclosed in <> or "". The former is looked for only in sysIncPath. 2153 * The latter in . and the directories specified by -I command line 2154 * options 2155 * 2156 * Results: 2157 * None 2158 * 2159 * Side Effects: 2160 * A structure is added to the includes Lst and readProc, lineno, 2161 * fname and curFILE are altered for the new file 2162 *--------------------------------------------------------------------- 2163 */ 2164 2165 static void 2166 Parse_include_file(char *file, Boolean isSystem, Boolean depinc, int silent) 2167 { 2168 struct loadedfile *lf; 2169 char *fullname; /* full pathname of file */ 2170 char *newName; 2171 char *prefEnd, *incdir; 2172 int fd; 2173 int i; 2174 2175 /* 2176 * Now we know the file's name and its search path, we attempt to 2177 * find the durn thing. A return of NULL indicates the file don't 2178 * exist. 2179 */ 2180 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2181 2182 if (fullname == NULL && !isSystem) { 2183 /* 2184 * Include files contained in double-quotes are first searched for 2185 * relative to the including file's location. We don't want to 2186 * cd there, of course, so we just tack on the old file's 2187 * leading path components and call Dir_FindFile to see if 2188 * we can locate the beast. 2189 */ 2190 2191 incdir = bmake_strdup(curFile->fname); 2192 prefEnd = strrchr(incdir, '/'); 2193 if (prefEnd != NULL) { 2194 *prefEnd = '\0'; 2195 /* Now do lexical processing of leading "../" on the filename */ 2196 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2197 prefEnd = strrchr(incdir + 1, '/'); 2198 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2199 break; 2200 *prefEnd = '\0'; 2201 } 2202 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2203 fullname = Dir_FindFile(newName, parseIncPath); 2204 if (fullname == NULL) 2205 fullname = Dir_FindFile(newName, dirSearchPath); 2206 free(newName); 2207 } 2208 free(incdir); 2209 2210 if (fullname == NULL) { 2211 /* 2212 * Makefile wasn't found in same directory as included makefile. 2213 * Search for it first on the -I search path, 2214 * then on the .PATH search path, if not found in a -I directory. 2215 * If we have a suffix specific path we should use that. 2216 */ 2217 char *suff; 2218 Lst suffPath = NULL; 2219 2220 if ((suff = strrchr(file, '.'))) { 2221 suffPath = Suff_GetPath(suff); 2222 if (suffPath != NULL) { 2223 fullname = Dir_FindFile(file, suffPath); 2224 } 2225 } 2226 if (fullname == NULL) { 2227 fullname = Dir_FindFile(file, parseIncPath); 2228 if (fullname == NULL) { 2229 fullname = Dir_FindFile(file, dirSearchPath); 2230 } 2231 } 2232 } 2233 } 2234 2235 /* Looking for a system file or file still not found */ 2236 if (fullname == NULL) { 2237 /* 2238 * Look for it on the system path 2239 */ 2240 fullname = Dir_FindFile(file, 2241 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2242 } 2243 2244 if (fullname == NULL) { 2245 if (!silent) 2246 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2247 return; 2248 } 2249 2250 /* Actually open the file... */ 2251 fd = open(fullname, O_RDONLY); 2252 if (fd == -1) { 2253 if (!silent) 2254 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2255 free(fullname); 2256 return; 2257 } 2258 2259 /* load it */ 2260 lf = loadfile(fullname, fd); 2261 2262 ParseSetIncludedFile(); 2263 /* Start reading from this file next */ 2264 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2265 curFile->lf = lf; 2266 if (depinc) 2267 doing_depend = depinc; /* only turn it on */ 2268 } 2269 2270 static void 2271 ParseDoInclude(char *line) 2272 { 2273 char endc; /* the character which ends the file spec */ 2274 char *cp; /* current position in file spec */ 2275 int silent = (*line != 'i') ? 1 : 0; 2276 char *file = &line[7 + silent]; 2277 2278 /* Skip to delimiter character so we know where to look */ 2279 while (*file == ' ' || *file == '\t') 2280 file++; 2281 2282 if (*file != '"' && *file != '<') { 2283 Parse_Error(PARSE_FATAL, 2284 ".include filename must be delimited by '\"' or '<'"); 2285 return; 2286 } 2287 2288 /* 2289 * Set the search path on which to find the include file based on the 2290 * characters which bracket its name. Angle-brackets imply it's 2291 * a system Makefile while double-quotes imply it's a user makefile 2292 */ 2293 if (*file == '<') { 2294 endc = '>'; 2295 } else { 2296 endc = '"'; 2297 } 2298 2299 /* Skip to matching delimiter */ 2300 for (cp = ++file; *cp && *cp != endc; cp++) 2301 continue; 2302 2303 if (*cp != endc) { 2304 Parse_Error(PARSE_FATAL, 2305 "Unclosed %cinclude filename. '%c' expected", 2306 '.', endc); 2307 return; 2308 } 2309 *cp = '\0'; 2310 2311 /* 2312 * Substitute for any variables in the file name before trying to 2313 * find the thing. 2314 */ 2315 file = Var_Subst(NULL, file, VAR_CMD, VARF_WANTRES); 2316 2317 Parse_include_file(file, endc == '>', (*line == 'd'), silent); 2318 free(file); 2319 } 2320 2321 2322 /*- 2323 *--------------------------------------------------------------------- 2324 * ParseSetIncludedFile -- 2325 * Set the .INCLUDEDFROMFILE variable to the contents of .PARSEFILE 2326 * and the .INCLUDEDFROMDIR variable to the contents of .PARSEDIR 2327 * 2328 * Results: 2329 * None 2330 * 2331 * Side Effects: 2332 * The .INCLUDEDFROMFILE variable is overwritten by the contents 2333 * of .PARSEFILE and the .INCLUDEDFROMDIR variable is overwriten 2334 * by the contents of .PARSEDIR 2335 *--------------------------------------------------------------------- 2336 */ 2337 static void 2338 ParseSetIncludedFile(void) 2339 { 2340 char *pf, *fp = NULL; 2341 char *pd, *dp = NULL; 2342 2343 pf = Var_Value(".PARSEFILE", VAR_GLOBAL, &fp); 2344 Var_Set(".INCLUDEDFROMFILE", pf, VAR_GLOBAL, 0); 2345 pd = Var_Value(".PARSEDIR", VAR_GLOBAL, &dp); 2346 Var_Set(".INCLUDEDFROMDIR", pd, VAR_GLOBAL, 0); 2347 2348 if (DEBUG(PARSE)) 2349 fprintf(debug_file, "%s: ${.INCLUDEDFROMDIR} = `%s' " 2350 "${.INCLUDEDFROMFILE} = `%s'\n", __func__, pd, pf); 2351 2352 free(fp); 2353 free(dp); 2354 } 2355 /*- 2356 *--------------------------------------------------------------------- 2357 * ParseSetParseFile -- 2358 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2359 * basename of the given filename 2360 * 2361 * Results: 2362 * None 2363 * 2364 * Side Effects: 2365 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2366 * dirname and basename of the given filename. 2367 *--------------------------------------------------------------------- 2368 */ 2369 static void 2370 ParseSetParseFile(const char *filename) 2371 { 2372 char *slash, *dirname; 2373 const char *pd, *pf; 2374 int len; 2375 2376 slash = strrchr(filename, '/'); 2377 if (slash == NULL) { 2378 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2379 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2380 dirname= NULL; 2381 } else { 2382 len = slash - filename; 2383 dirname = bmake_malloc(len + 1); 2384 memcpy(dirname, filename, len); 2385 dirname[len] = '\0'; 2386 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2387 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2388 } 2389 if (DEBUG(PARSE)) 2390 fprintf(debug_file, "%s: ${.PARSEDIR} = `%s' ${.PARSEFILE} = `%s'\n", 2391 __func__, pd, pf); 2392 free(dirname); 2393 } 2394 2395 /* 2396 * Track the makefiles we read - so makefiles can 2397 * set dependencies on them. 2398 * Avoid adding anything more than once. 2399 */ 2400 2401 static void 2402 ParseTrackInput(const char *name) 2403 { 2404 char *old; 2405 char *ep; 2406 char *fp = NULL; 2407 size_t name_len = strlen(name); 2408 2409 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2410 if (old) { 2411 ep = old + strlen(old) - name_len; 2412 /* does it contain name? */ 2413 for (; old != NULL; old = strchr(old, ' ')) { 2414 if (*old == ' ') 2415 old++; 2416 if (old >= ep) 2417 break; /* cannot contain name */ 2418 if (memcmp(old, name, name_len) == 0 2419 && (old[name_len] == 0 || old[name_len] == ' ')) 2420 goto cleanup; 2421 } 2422 } 2423 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2424 cleanup: 2425 if (fp) { 2426 free(fp); 2427 } 2428 } 2429 2430 2431 /*- 2432 *--------------------------------------------------------------------- 2433 * Parse_setInput -- 2434 * Start Parsing from the given source 2435 * 2436 * Results: 2437 * None 2438 * 2439 * Side Effects: 2440 * A structure is added to the includes Lst and readProc, lineno, 2441 * fname and curFile are altered for the new file 2442 *--------------------------------------------------------------------- 2443 */ 2444 void 2445 Parse_SetInput(const char *name, int line, int fd, 2446 char *(*nextbuf)(void *, size_t *), void *arg) 2447 { 2448 char *buf; 2449 size_t len; 2450 2451 if (name == NULL) 2452 name = curFile->fname; 2453 else 2454 ParseTrackInput(name); 2455 2456 if (DEBUG(PARSE)) 2457 fprintf(debug_file, "%s: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2458 __func__, name, line, fd, nextbuf, arg); 2459 2460 if (fd == -1 && nextbuf == NULL) 2461 /* sanity */ 2462 return; 2463 2464 if (curFile != NULL) 2465 /* Save exiting file info */ 2466 Lst_AtFront(includes, curFile); 2467 2468 /* Allocate and fill in new structure */ 2469 curFile = bmake_malloc(sizeof *curFile); 2470 2471 /* 2472 * Once the previous state has been saved, we can get down to reading 2473 * the new file. We set up the name of the file to be the absolute 2474 * name of the include file so error messages refer to the right 2475 * place. 2476 */ 2477 curFile->fname = bmake_strdup(name); 2478 curFile->lineno = line; 2479 curFile->first_lineno = line; 2480 curFile->nextbuf = nextbuf; 2481 curFile->nextbuf_arg = arg; 2482 curFile->lf = NULL; 2483 curFile->depending = doing_depend; /* restore this on EOF */ 2484 2485 assert(nextbuf != NULL); 2486 2487 /* Get first block of input data */ 2488 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2489 if (buf == NULL) { 2490 /* Was all a waste of time ... */ 2491 if (curFile->fname) 2492 free(curFile->fname); 2493 free(curFile); 2494 return; 2495 } 2496 curFile->P_str = buf; 2497 curFile->P_ptr = buf; 2498 curFile->P_end = buf+len; 2499 2500 curFile->cond_depth = Cond_save_depth(); 2501 ParseSetParseFile(name); 2502 } 2503 2504 #ifdef SYSVINCLUDE 2505 /*- 2506 *--------------------------------------------------------------------- 2507 * ParseTraditionalInclude -- 2508 * Push to another file. 2509 * 2510 * The input is the current line. The file name(s) are 2511 * following the "include". 2512 * 2513 * Results: 2514 * None 2515 * 2516 * Side Effects: 2517 * A structure is added to the includes Lst and readProc, lineno, 2518 * fname and curFILE are altered for the new file 2519 *--------------------------------------------------------------------- 2520 */ 2521 static void 2522 ParseTraditionalInclude(char *line) 2523 { 2524 char *cp; /* current position in file spec */ 2525 int done = 0; 2526 int silent = (line[0] != 'i') ? 1 : 0; 2527 char *file = &line[silent + 7]; 2528 char *all_files; 2529 2530 if (DEBUG(PARSE)) { 2531 fprintf(debug_file, "%s: %s\n", __func__, file); 2532 } 2533 2534 /* 2535 * Skip over whitespace 2536 */ 2537 while (isspace((unsigned char)*file)) 2538 file++; 2539 2540 /* 2541 * Substitute for any variables in the file name before trying to 2542 * find the thing. 2543 */ 2544 all_files = Var_Subst(NULL, file, VAR_CMD, VARF_WANTRES); 2545 2546 if (*file == '\0') { 2547 Parse_Error(PARSE_FATAL, 2548 "Filename missing from \"include\""); 2549 return; 2550 } 2551 2552 for (file = all_files; !done; file = cp + 1) { 2553 /* Skip to end of line or next whitespace */ 2554 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2555 continue; 2556 2557 if (*cp) 2558 *cp = '\0'; 2559 else 2560 done = 1; 2561 2562 Parse_include_file(file, FALSE, FALSE, silent); 2563 } 2564 free(all_files); 2565 } 2566 #endif 2567 2568 #ifdef GMAKEEXPORT 2569 /*- 2570 *--------------------------------------------------------------------- 2571 * ParseGmakeExport -- 2572 * Parse export <variable>=<value> 2573 * 2574 * And set the environment with it. 2575 * 2576 * Results: 2577 * None 2578 * 2579 * Side Effects: 2580 * None 2581 *--------------------------------------------------------------------- 2582 */ 2583 static void 2584 ParseGmakeExport(char *line) 2585 { 2586 char *variable = &line[6]; 2587 char *value; 2588 2589 if (DEBUG(PARSE)) { 2590 fprintf(debug_file, "%s: %s\n", __func__, variable); 2591 } 2592 2593 /* 2594 * Skip over whitespace 2595 */ 2596 while (isspace((unsigned char)*variable)) 2597 variable++; 2598 2599 for (value = variable; *value && *value != '='; value++) 2600 continue; 2601 2602 if (*value != '=') { 2603 Parse_Error(PARSE_FATAL, 2604 "Variable/Value missing from \"export\""); 2605 return; 2606 } 2607 *value++ = '\0'; /* terminate variable */ 2608 2609 /* 2610 * Expand the value before putting it in the environment. 2611 */ 2612 value = Var_Subst(NULL, value, VAR_CMD, VARF_WANTRES); 2613 setenv(variable, value, 1); 2614 } 2615 #endif 2616 2617 /*- 2618 *--------------------------------------------------------------------- 2619 * ParseEOF -- 2620 * Called when EOF is reached in the current file. If we were reading 2621 * an include file, the includes stack is popped and things set up 2622 * to go back to reading the previous file at the previous location. 2623 * 2624 * Results: 2625 * CONTINUE if there's more to do. DONE if not. 2626 * 2627 * Side Effects: 2628 * The old curFILE, is closed. The includes list is shortened. 2629 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2630 *--------------------------------------------------------------------- 2631 */ 2632 static int 2633 ParseEOF(void) 2634 { 2635 char *ptr; 2636 size_t len; 2637 2638 assert(curFile->nextbuf != NULL); 2639 2640 doing_depend = curFile->depending; /* restore this */ 2641 /* get next input buffer, if any */ 2642 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2643 curFile->P_ptr = ptr; 2644 curFile->P_str = ptr; 2645 curFile->P_end = ptr + len; 2646 curFile->lineno = curFile->first_lineno; 2647 if (ptr != NULL) { 2648 /* Iterate again */ 2649 return CONTINUE; 2650 } 2651 2652 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2653 Cond_restore_depth(curFile->cond_depth); 2654 2655 if (curFile->lf != NULL) { 2656 loadedfile_destroy(curFile->lf); 2657 curFile->lf = NULL; 2658 } 2659 2660 /* Dispose of curFile info */ 2661 /* Leak curFile->fname because all the gnodes have pointers to it */ 2662 free(curFile->P_str); 2663 free(curFile); 2664 2665 curFile = Lst_DeQueue(includes); 2666 2667 if (curFile == NULL) { 2668 /* We've run out of input */ 2669 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2670 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2671 Var_Delete(".INCLUDEDFROMDIR", VAR_GLOBAL); 2672 Var_Delete(".INCLUDEDFROMFILE", VAR_GLOBAL); 2673 return DONE; 2674 } 2675 2676 if (DEBUG(PARSE)) 2677 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2678 curFile->fname, curFile->lineno); 2679 2680 /* Restore the PARSEDIR/PARSEFILE variables */ 2681 ParseSetParseFile(curFile->fname); 2682 return (CONTINUE); 2683 } 2684 2685 #define PARSE_RAW 1 2686 #define PARSE_SKIP 2 2687 2688 static char * 2689 ParseGetLine(int flags, int *length) 2690 { 2691 IFile *cf = curFile; 2692 char *ptr; 2693 char ch; 2694 char *line; 2695 char *line_end; 2696 char *escaped; 2697 char *comment; 2698 char *tp; 2699 2700 /* Loop through blank lines and comment lines */ 2701 for (;;) { 2702 cf->lineno++; 2703 line = cf->P_ptr; 2704 ptr = line; 2705 line_end = line; 2706 escaped = NULL; 2707 comment = NULL; 2708 for (;;) { 2709 if (cf->P_end != NULL && ptr == cf->P_end) { 2710 /* end of buffer */ 2711 ch = 0; 2712 break; 2713 } 2714 ch = *ptr; 2715 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2716 if (cf->P_end == NULL) 2717 /* End of string (aka for loop) data */ 2718 break; 2719 /* see if there is more we can parse */ 2720 while (ptr++ < cf->P_end) { 2721 if ((ch = *ptr) == '\n') { 2722 if (ptr > line && ptr[-1] == '\\') 2723 continue; 2724 Parse_Error(PARSE_WARNING, 2725 "Zero byte read from file, skipping rest of line."); 2726 break; 2727 } 2728 } 2729 if (cf->nextbuf != NULL) { 2730 /* 2731 * End of this buffer; return EOF and outer logic 2732 * will get the next one. (eww) 2733 */ 2734 break; 2735 } 2736 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2737 return NULL; 2738 } 2739 2740 if (ch == '\\') { 2741 /* Don't treat next character as special, remember first one */ 2742 if (escaped == NULL) 2743 escaped = ptr; 2744 if (ptr[1] == '\n') 2745 cf->lineno++; 2746 ptr += 2; 2747 line_end = ptr; 2748 continue; 2749 } 2750 if (ch == '#' && comment == NULL) { 2751 /* Remember first '#' for comment stripping */ 2752 /* Unless previous char was '[', as in modifier :[#] */ 2753 if (!(ptr > line && ptr[-1] == '[')) 2754 comment = line_end; 2755 } 2756 ptr++; 2757 if (ch == '\n') 2758 break; 2759 if (!isspace((unsigned char)ch)) 2760 /* We are not interested in trailing whitespace */ 2761 line_end = ptr; 2762 } 2763 2764 /* Save next 'to be processed' location */ 2765 cf->P_ptr = ptr; 2766 2767 /* Check we have a non-comment, non-blank line */ 2768 if (line_end == line || comment == line) { 2769 if (ch == 0) 2770 /* At end of file */ 2771 return NULL; 2772 /* Parse another line */ 2773 continue; 2774 } 2775 2776 /* We now have a line of data */ 2777 *line_end = 0; 2778 2779 if (flags & PARSE_RAW) { 2780 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2781 *length = line_end - line; 2782 return line; 2783 } 2784 2785 if (flags & PARSE_SKIP) { 2786 /* Completely ignore non-directives */ 2787 if (line[0] != '.') 2788 continue; 2789 /* We could do more of the .else/.elif/.endif checks here */ 2790 } 2791 break; 2792 } 2793 2794 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2795 if (comment != NULL && line[0] != '\t') { 2796 line_end = comment; 2797 *line_end = 0; 2798 } 2799 2800 /* If we didn't see a '\\' then the in-situ data is fine */ 2801 if (escaped == NULL) { 2802 *length = line_end - line; 2803 return line; 2804 } 2805 2806 /* Remove escapes from '\n' and '#' */ 2807 tp = ptr = escaped; 2808 escaped = line; 2809 for (; ; *tp++ = ch) { 2810 ch = *ptr++; 2811 if (ch != '\\') { 2812 if (ch == 0) 2813 break; 2814 continue; 2815 } 2816 2817 ch = *ptr++; 2818 if (ch == 0) { 2819 /* Delete '\\' at end of buffer */ 2820 tp--; 2821 break; 2822 } 2823 2824 if (ch == '#' && line[0] != '\t') 2825 /* Delete '\\' from before '#' on non-command lines */ 2826 continue; 2827 2828 if (ch != '\n') { 2829 /* Leave '\\' in buffer for later */ 2830 *tp++ = '\\'; 2831 /* Make sure we don't delete an escaped ' ' from the line end */ 2832 escaped = tp + 1; 2833 continue; 2834 } 2835 2836 /* Escaped '\n' replace following whitespace with a single ' ' */ 2837 while (ptr[0] == ' ' || ptr[0] == '\t') 2838 ptr++; 2839 ch = ' '; 2840 } 2841 2842 /* Delete any trailing spaces - eg from empty continuations */ 2843 while (tp > escaped && isspace((unsigned char)tp[-1])) 2844 tp--; 2845 2846 *tp = 0; 2847 *length = tp - line; 2848 return line; 2849 } 2850 2851 /*- 2852 *--------------------------------------------------------------------- 2853 * ParseReadLine -- 2854 * Read an entire line from the input file. Called only by Parse_File. 2855 * 2856 * Results: 2857 * A line w/o its newline 2858 * 2859 * Side Effects: 2860 * Only those associated with reading a character 2861 *--------------------------------------------------------------------- 2862 */ 2863 static char * 2864 ParseReadLine(void) 2865 { 2866 char *line; /* Result */ 2867 int lineLength; /* Length of result */ 2868 int lineno; /* Saved line # */ 2869 int rval; 2870 2871 for (;;) { 2872 line = ParseGetLine(0, &lineLength); 2873 if (line == NULL) 2874 return NULL; 2875 2876 if (line[0] != '.') 2877 return line; 2878 2879 /* 2880 * The line might be a conditional. Ask the conditional module 2881 * about it and act accordingly 2882 */ 2883 switch (Cond_Eval(line)) { 2884 case COND_SKIP: 2885 /* Skip to next conditional that evaluates to COND_PARSE. */ 2886 do { 2887 line = ParseGetLine(PARSE_SKIP, &lineLength); 2888 } while (line && Cond_Eval(line) != COND_PARSE); 2889 if (line == NULL) 2890 break; 2891 continue; 2892 case COND_PARSE: 2893 continue; 2894 case COND_INVALID: /* Not a conditional line */ 2895 /* Check for .for loops */ 2896 rval = For_Eval(line); 2897 if (rval == 0) 2898 /* Not a .for line */ 2899 break; 2900 if (rval < 0) 2901 /* Syntax error - error printed, ignore line */ 2902 continue; 2903 /* Start of a .for loop */ 2904 lineno = curFile->lineno; 2905 /* Accumulate loop lines until matching .endfor */ 2906 do { 2907 line = ParseGetLine(PARSE_RAW, &lineLength); 2908 if (line == NULL) { 2909 Parse_Error(PARSE_FATAL, 2910 "Unexpected end of file in for loop."); 2911 break; 2912 } 2913 } while (For_Accum(line)); 2914 /* Stash each iteration as a new 'input file' */ 2915 For_Run(lineno); 2916 /* Read next line from for-loop buffer */ 2917 continue; 2918 } 2919 return (line); 2920 } 2921 } 2922 2923 /*- 2924 *----------------------------------------------------------------------- 2925 * ParseFinishLine -- 2926 * Handle the end of a dependency group. 2927 * 2928 * Results: 2929 * Nothing. 2930 * 2931 * Side Effects: 2932 * inLine set FALSE. 'targets' list destroyed. 2933 * 2934 *----------------------------------------------------------------------- 2935 */ 2936 static void 2937 ParseFinishLine(void) 2938 { 2939 if (inLine) { 2940 Lst_ForEach(targets, Suff_EndTransform, NULL); 2941 Lst_Destroy(targets, ParseHasCommands); 2942 targets = NULL; 2943 inLine = FALSE; 2944 } 2945 } 2946 2947 2948 /*- 2949 *--------------------------------------------------------------------- 2950 * Parse_File -- 2951 * Parse a file into its component parts, incorporating it into the 2952 * current dependency graph. This is the main function and controls 2953 * almost every other function in this module 2954 * 2955 * Input: 2956 * name the name of the file being read 2957 * fd Open file to makefile to parse 2958 * 2959 * Results: 2960 * None 2961 * 2962 * Side Effects: 2963 * closes fd. 2964 * Loads. Nodes are added to the list of all targets, nodes and links 2965 * are added to the dependency graph. etc. etc. etc. 2966 *--------------------------------------------------------------------- 2967 */ 2968 void 2969 Parse_File(const char *name, int fd) 2970 { 2971 char *cp; /* pointer into the line */ 2972 char *line; /* the line we're working on */ 2973 struct loadedfile *lf; 2974 2975 lf = loadfile(name, fd); 2976 2977 inLine = FALSE; 2978 fatals = 0; 2979 2980 if (name == NULL) { 2981 name = "(stdin)"; 2982 } 2983 2984 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2985 curFile->lf = lf; 2986 2987 do { 2988 for (; (line = ParseReadLine()) != NULL; ) { 2989 if (DEBUG(PARSE)) 2990 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2991 curFile->lineno, line); 2992 if (*line == '.') { 2993 /* 2994 * Lines that begin with the special character may be 2995 * include or undef directives. 2996 * On the other hand they can be suffix rules (.c.o: ...) 2997 * or just dependencies for filenames that start '.'. 2998 */ 2999 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 3000 continue; 3001 } 3002 if (strncmp(cp, "include", 7) == 0 || 3003 ((cp[0] == 'd' || cp[0] == 's' || cp[0] == '-') && 3004 strncmp(&cp[1], "include", 7) == 0)) { 3005 ParseDoInclude(cp); 3006 continue; 3007 } 3008 if (strncmp(cp, "undef", 5) == 0) { 3009 char *cp2; 3010 for (cp += 5; isspace((unsigned char) *cp); cp++) 3011 continue; 3012 for (cp2 = cp; !isspace((unsigned char) *cp2) && 3013 (*cp2 != '\0'); cp2++) 3014 continue; 3015 *cp2 = '\0'; 3016 Var_Delete(cp, VAR_GLOBAL); 3017 continue; 3018 } else if (strncmp(cp, "export", 6) == 0) { 3019 for (cp += 6; isspace((unsigned char) *cp); cp++) 3020 continue; 3021 Var_Export(cp, 1); 3022 continue; 3023 } else if (strncmp(cp, "unexport", 8) == 0) { 3024 Var_UnExport(cp); 3025 continue; 3026 } else if (strncmp(cp, "info", 4) == 0 || 3027 strncmp(cp, "error", 5) == 0 || 3028 strncmp(cp, "warning", 7) == 0) { 3029 if (ParseMessage(cp)) 3030 continue; 3031 } 3032 } 3033 3034 if (*line == '\t') { 3035 /* 3036 * If a line starts with a tab, it can only hope to be 3037 * a creation command. 3038 */ 3039 cp = line + 1; 3040 shellCommand: 3041 for (; isspace ((unsigned char)*cp); cp++) { 3042 continue; 3043 } 3044 if (*cp) { 3045 if (!inLine) 3046 Parse_Error(PARSE_FATAL, 3047 "Unassociated shell command \"%s\"", 3048 cp); 3049 /* 3050 * So long as it's not a blank line and we're actually 3051 * in a dependency spec, add the command to the list of 3052 * commands of all targets in the dependency spec 3053 */ 3054 if (targets) { 3055 cp = bmake_strdup(cp); 3056 Lst_ForEach(targets, ParseAddCmd, cp); 3057 #ifdef CLEANUP 3058 Lst_AtEnd(targCmds, cp); 3059 #endif 3060 } 3061 } 3062 continue; 3063 } 3064 3065 #ifdef SYSVINCLUDE 3066 if (((strncmp(line, "include", 7) == 0 && 3067 isspace((unsigned char) line[7])) || 3068 ((line[0] == 's' || line[0] == '-') && 3069 strncmp(&line[1], "include", 7) == 0 && 3070 isspace((unsigned char) line[8]))) && 3071 strchr(line, ':') == NULL) { 3072 /* 3073 * It's an S3/S5-style "include". 3074 */ 3075 ParseTraditionalInclude(line); 3076 continue; 3077 } 3078 #endif 3079 #ifdef GMAKEEXPORT 3080 if (strncmp(line, "export", 6) == 0 && 3081 isspace((unsigned char) line[6]) && 3082 strchr(line, ':') == NULL) { 3083 /* 3084 * It's a Gmake "export". 3085 */ 3086 ParseGmakeExport(line); 3087 continue; 3088 } 3089 #endif 3090 if (Parse_IsVar(line)) { 3091 ParseFinishLine(); 3092 Parse_DoVar(line, VAR_GLOBAL); 3093 continue; 3094 } 3095 3096 #ifndef POSIX 3097 /* 3098 * To make life easier on novices, if the line is indented we 3099 * first make sure the line has a dependency operator in it. 3100 * If it doesn't have an operator and we're in a dependency 3101 * line's script, we assume it's actually a shell command 3102 * and add it to the current list of targets. 3103 */ 3104 cp = line; 3105 if (isspace((unsigned char) line[0])) { 3106 while ((*cp != '\0') && isspace((unsigned char) *cp)) 3107 cp++; 3108 while (*cp && (ParseIsEscaped(line, cp) || 3109 (*cp != ':') && (*cp != '!'))) { 3110 cp++; 3111 } 3112 if (*cp == '\0') { 3113 if (inLine) { 3114 Parse_Error(PARSE_WARNING, 3115 "Shell command needs a leading tab"); 3116 goto shellCommand; 3117 } 3118 } 3119 } 3120 #endif 3121 ParseFinishLine(); 3122 3123 /* 3124 * For some reason - probably to make the parser impossible - 3125 * a ';' can be used to separate commands from dependencies. 3126 * Attempt to avoid ';' inside substitution patterns. 3127 */ 3128 { 3129 int level = 0; 3130 3131 for (cp = line; *cp != 0; cp++) { 3132 if (*cp == '\\' && cp[1] != 0) { 3133 cp++; 3134 continue; 3135 } 3136 if (*cp == '$' && 3137 (cp[1] == '(' || cp[1] == '{')) { 3138 level++; 3139 continue; 3140 } 3141 if (level > 0) { 3142 if (*cp == ')' || *cp == '}') { 3143 level--; 3144 continue; 3145 } 3146 } else if (*cp == ';') { 3147 break; 3148 } 3149 } 3150 } 3151 if (*cp != 0) 3152 /* Terminate the dependency list at the ';' */ 3153 *cp++ = 0; 3154 else 3155 cp = NULL; 3156 3157 /* 3158 * We now know it's a dependency line so it needs to have all 3159 * variables expanded before being parsed. Tell the variable 3160 * module to complain if some variable is undefined... 3161 */ 3162 line = Var_Subst(NULL, line, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES); 3163 3164 /* 3165 * Need a non-circular list for the target nodes 3166 */ 3167 if (targets) 3168 Lst_Destroy(targets, NULL); 3169 3170 targets = Lst_Init(FALSE); 3171 inLine = TRUE; 3172 3173 ParseDoDependency(line); 3174 free(line); 3175 3176 /* If there were commands after a ';', add them now */ 3177 if (cp != NULL) { 3178 goto shellCommand; 3179 } 3180 } 3181 /* 3182 * Reached EOF, but it may be just EOF of an include file... 3183 */ 3184 } while (ParseEOF() == CONTINUE); 3185 3186 if (fatals) { 3187 (void)fflush(stdout); 3188 (void)fprintf(stderr, 3189 "%s: Fatal errors encountered -- cannot continue", 3190 progname); 3191 PrintOnError(NULL, NULL); 3192 exit(1); 3193 } 3194 } 3195 3196 /*- 3197 *--------------------------------------------------------------------- 3198 * Parse_Init -- 3199 * initialize the parsing module 3200 * 3201 * Results: 3202 * none 3203 * 3204 * Side Effects: 3205 * the parseIncPath list is initialized... 3206 *--------------------------------------------------------------------- 3207 */ 3208 void 3209 Parse_Init(void) 3210 { 3211 mainNode = NULL; 3212 parseIncPath = Lst_Init(FALSE); 3213 sysIncPath = Lst_Init(FALSE); 3214 defIncPath = Lst_Init(FALSE); 3215 includes = Lst_Init(FALSE); 3216 #ifdef CLEANUP 3217 targCmds = Lst_Init(FALSE); 3218 #endif 3219 } 3220 3221 void 3222 Parse_End(void) 3223 { 3224 #ifdef CLEANUP 3225 Lst_Destroy(targCmds, (FreeProc *)free); 3226 if (targets) 3227 Lst_Destroy(targets, NULL); 3228 Lst_Destroy(defIncPath, Dir_Destroy); 3229 Lst_Destroy(sysIncPath, Dir_Destroy); 3230 Lst_Destroy(parseIncPath, Dir_Destroy); 3231 Lst_Destroy(includes, NULL); /* Should be empty now */ 3232 #endif 3233 } 3234 3235 3236 /*- 3237 *----------------------------------------------------------------------- 3238 * Parse_MainName -- 3239 * Return a Lst of the main target to create for main()'s sake. If 3240 * no such target exists, we Punt with an obnoxious error message. 3241 * 3242 * Results: 3243 * A Lst of the single node to create. 3244 * 3245 * Side Effects: 3246 * None. 3247 * 3248 *----------------------------------------------------------------------- 3249 */ 3250 Lst 3251 Parse_MainName(void) 3252 { 3253 Lst mainList; /* result list */ 3254 3255 mainList = Lst_Init(FALSE); 3256 3257 if (mainNode == NULL) { 3258 Punt("no target to make."); 3259 /*NOTREACHED*/ 3260 } else if (mainNode->type & OP_DOUBLEDEP) { 3261 (void)Lst_AtEnd(mainList, mainNode); 3262 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3263 } 3264 else 3265 (void)Lst_AtEnd(mainList, mainNode); 3266 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3267 return (mainList); 3268 } 3269 3270 /*- 3271 *----------------------------------------------------------------------- 3272 * ParseMark -- 3273 * Add the filename and lineno to the GNode so that we remember 3274 * where it was first defined. 3275 * 3276 * Side Effects: 3277 * None. 3278 * 3279 *----------------------------------------------------------------------- 3280 */ 3281 static void 3282 ParseMark(GNode *gn) 3283 { 3284 gn->fname = curFile->fname; 3285 gn->lineno = curFile->lineno; 3286 } 3287