1 /* $NetBSD: parse.c,v 1.251 2020/08/10 19:53:19 rillig 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 1.251 2020/08/10 19:53:19 rillig 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 1.251 2020/08/10 19:53:19 rillig Exp $"); 80 #endif 81 #endif /* not lint */ 82 #endif 83 84 /*- 85 * parse.c -- 86 * Functions to parse a makefile. 87 * 88 * One function, Parse_Init, must be called before any functions 89 * in this module are used. After that, the function Parse_File is the 90 * main entry point and controls most of the other functions in this 91 * module. 92 * 93 * Most important structures are kept in Lsts. Directories for 94 * the .include "..." function are kept in the 'parseIncPath' Lst, while 95 * those for the .include <...> are kept in the 'sysIncPath' Lst. The 96 * targets currently being defined are kept in the 'targets' Lst. 97 * 98 * The variables 'fname' and 'lineno' are used to track the name 99 * of the current file and the line number in that file so that error 100 * messages can be more meaningful. 101 * 102 * Interface: 103 * Parse_Init Initialization function which must be 104 * called before anything else in this module 105 * is used. 106 * 107 * Parse_End Cleanup the module 108 * 109 * Parse_File Function used to parse a makefile. It must 110 * be given the name of the file, which should 111 * already have been opened, and a function 112 * to call to read a character from the file. 113 * 114 * Parse_IsVar Returns TRUE if the given line is a 115 * variable assignment. Used by MainParseArgs 116 * to determine if an argument is a target 117 * or a variable assignment. Used internally 118 * for pretty much the same thing... 119 * 120 * Parse_Error Function called when an error occurs in 121 * parsing. Used by the variable and 122 * conditional modules. 123 * Parse_MainName Returns a Lst of the main target to create. 124 */ 125 126 #include <sys/types.h> 127 #include <sys/mman.h> 128 #include <sys/stat.h> 129 #include <assert.h> 130 #include <ctype.h> 131 #include <errno.h> 132 #include <stdarg.h> 133 #include <stdio.h> 134 #include <stdint.h> 135 136 #ifndef MAP_FILE 137 #define MAP_FILE 0 138 #endif 139 #ifndef MAP_COPY 140 #define MAP_COPY MAP_PRIVATE 141 #endif 142 143 #include "make.h" 144 #include "hash.h" 145 #include "dir.h" 146 #include "job.h" 147 #include "buf.h" 148 #include "pathnames.h" 149 150 /* types and constants */ 151 152 /* 153 * Structure for a file being read ("included file") 154 */ 155 typedef struct IFile { 156 char *fname; /* name of file */ 157 int lineno; /* current line number in file */ 158 int first_lineno; /* line number of start of text */ 159 int cond_depth; /* 'if' nesting when file opened */ 160 Boolean depending; /* state of doing_depend on EOF */ 161 char *P_str; /* point to base of string buffer */ 162 char *P_ptr; /* point to next char of string buffer */ 163 char *P_end; /* point to the end of string buffer */ 164 char *(*nextbuf)(void *, size_t *); /* Function to get more data */ 165 void *nextbuf_arg; /* Opaque arg for nextbuf() */ 166 struct loadedfile *lf; /* loadedfile object, if any */ 167 } IFile; 168 169 170 /* 171 * These values are returned by ParseEOF to tell Parse_File whether to 172 * CONTINUE parsing, i.e. it had only reached the end of an include file, 173 * or if it's DONE. 174 */ 175 #define CONTINUE 1 176 #define DONE 0 177 178 /* 179 * Tokens for target attributes 180 */ 181 typedef enum { 182 Begin, /* .BEGIN */ 183 Default, /* .DEFAULT */ 184 DeleteOnError, /* .DELETE_ON_ERROR */ 185 End, /* .END */ 186 dotError, /* .ERROR */ 187 Ignore, /* .IGNORE */ 188 Includes, /* .INCLUDES */ 189 Interrupt, /* .INTERRUPT */ 190 Libs, /* .LIBS */ 191 Meta, /* .META */ 192 MFlags, /* .MFLAGS or .MAKEFLAGS */ 193 Main, /* .MAIN and we don't have anything user-specified to 194 * make */ 195 NoExport, /* .NOEXPORT */ 196 NoMeta, /* .NOMETA */ 197 NoMetaCmp, /* .NOMETA_CMP */ 198 NoPath, /* .NOPATH */ 199 Not, /* Not special */ 200 NotParallel, /* .NOTPARALLEL */ 201 Null, /* .NULL */ 202 ExObjdir, /* .OBJDIR */ 203 Order, /* .ORDER */ 204 Parallel, /* .PARALLEL */ 205 ExPath, /* .PATH */ 206 Phony, /* .PHONY */ 207 #ifdef POSIX 208 Posix, /* .POSIX */ 209 #endif 210 Precious, /* .PRECIOUS */ 211 ExShell, /* .SHELL */ 212 Silent, /* .SILENT */ 213 SingleShell, /* .SINGLESHELL */ 214 Stale, /* .STALE */ 215 Suffixes, /* .SUFFIXES */ 216 Wait, /* .WAIT */ 217 Attribute /* Generic attribute */ 218 } ParseSpecial; 219 220 /* 221 * Other tokens 222 */ 223 #define LPAREN '(' 224 #define RPAREN ')' 225 226 227 /* result data */ 228 229 /* 230 * The main target to create. This is the first target on the first 231 * dependency line in the first makefile. 232 */ 233 static GNode *mainNode; 234 235 /* eval state */ 236 237 /* targets we're working on */ 238 static Lst targets; 239 240 #ifdef CLEANUP 241 /* command lines for targets */ 242 static Lst targCmds; 243 #endif 244 245 /* 246 * specType contains the SPECial TYPE of the current target. It is 247 * Not if the target is unspecial. If it *is* special, however, the children 248 * are linked as children of the parent but not vice versa. This variable is 249 * set in ParseDoDependency 250 */ 251 static ParseSpecial specType; 252 253 /* 254 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER 255 * seen, then set to each successive source on the line. 256 */ 257 static GNode *predecessor; 258 259 /* parser state */ 260 261 /* true if currently in a dependency line or its commands */ 262 static Boolean inLine; 263 264 /* number of fatal errors */ 265 static int fatals = 0; 266 267 /* 268 * Variables for doing includes 269 */ 270 271 /* current file being read */ 272 static IFile *curFile; 273 274 /* stack of IFiles generated by .includes */ 275 static Lst includes; 276 277 /* include paths (lists of directories) */ 278 Lst parseIncPath; /* dirs for "..." includes */ 279 Lst sysIncPath; /* dirs for <...> includes */ 280 Lst defIncPath; /* default for sysIncPath */ 281 282 /* parser tables */ 283 284 /* 285 * The parseKeywords table is searched using binary search when deciding 286 * if a target or source is special. The 'spec' field is the ParseSpecial 287 * type of the keyword ("Not" if the keyword isn't special as a target) while 288 * the 'op' field is the operator to apply to the list of targets if the 289 * keyword is used as a source ("0" if the keyword isn't special as a source) 290 */ 291 static const struct { 292 const char *name; /* Name of keyword */ 293 ParseSpecial spec; /* Type when used as a target */ 294 int op; /* Operator when used as a source */ 295 } parseKeywords[] = { 296 { ".BEGIN", Begin, 0 }, 297 { ".DEFAULT", Default, 0 }, 298 { ".DELETE_ON_ERROR", DeleteOnError, 0 }, 299 { ".END", End, 0 }, 300 { ".ERROR", dotError, 0 }, 301 { ".EXEC", Attribute, OP_EXEC }, 302 { ".IGNORE", Ignore, OP_IGNORE }, 303 { ".INCLUDES", Includes, 0 }, 304 { ".INTERRUPT", Interrupt, 0 }, 305 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 306 { ".JOIN", Attribute, OP_JOIN }, 307 { ".LIBS", Libs, 0 }, 308 { ".MADE", Attribute, OP_MADE }, 309 { ".MAIN", Main, 0 }, 310 { ".MAKE", Attribute, OP_MAKE }, 311 { ".MAKEFLAGS", MFlags, 0 }, 312 { ".META", Meta, OP_META }, 313 { ".MFLAGS", MFlags, 0 }, 314 { ".NOMETA", NoMeta, OP_NOMETA }, 315 { ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP }, 316 { ".NOPATH", NoPath, OP_NOPATH }, 317 { ".NOTMAIN", Attribute, OP_NOTMAIN }, 318 { ".NOTPARALLEL", NotParallel, 0 }, 319 { ".NO_PARALLEL", NotParallel, 0 }, 320 { ".NULL", Null, 0 }, 321 { ".OBJDIR", ExObjdir, 0 }, 322 { ".OPTIONAL", Attribute, OP_OPTIONAL }, 323 { ".ORDER", Order, 0 }, 324 { ".PARALLEL", Parallel, 0 }, 325 { ".PATH", ExPath, 0 }, 326 { ".PHONY", Phony, OP_PHONY }, 327 #ifdef POSIX 328 { ".POSIX", Posix, 0 }, 329 #endif 330 { ".PRECIOUS", Precious, OP_PRECIOUS }, 331 { ".RECURSIVE", Attribute, OP_MAKE }, 332 { ".SHELL", ExShell, 0 }, 333 { ".SILENT", Silent, OP_SILENT }, 334 { ".SINGLESHELL", SingleShell, 0 }, 335 { ".STALE", Stale, 0 }, 336 { ".SUFFIXES", Suffixes, 0 }, 337 { ".USE", Attribute, OP_USE }, 338 { ".USEBEFORE", Attribute, OP_USEBEFORE }, 339 { ".WAIT", Wait, 0 }, 340 }; 341 342 /* local functions */ 343 344 static int ParseIsEscaped(const char *, const char *); 345 static void ParseErrorInternal(const char *, size_t, int, const char *, ...) 346 MAKE_ATTR_PRINTFLIKE(4,5); 347 static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list) 348 MAKE_ATTR_PRINTFLIKE(5, 0); 349 static int ParseFindKeyword(const char *); 350 static int ParseLinkSrc(void *, void *); 351 static int ParseDoOp(void *, void *); 352 static void ParseDoSrc(int, const char *); 353 static int ParseFindMain(void *, void *); 354 static int ParseAddDir(void *, void *); 355 static int ParseClearPath(void *, void *); 356 static void ParseDoDependency(char *); 357 static int ParseAddCmd(void *, void *); 358 static void ParseHasCommands(void *); 359 static void ParseDoInclude(char *); 360 static void ParseSetParseFile(const char *); 361 static void ParseSetIncludedFile(void); 362 #ifdef GMAKEEXPORT 363 static void ParseGmakeExport(char *); 364 #endif 365 static int ParseEOF(void); 366 static char *ParseReadLine(void); 367 static void ParseFinishLine(void); 368 static void ParseMark(GNode *); 369 370 /* file loader */ 371 372 struct loadedfile { 373 const char *path; /* name, for error reports */ 374 char *buf; /* contents buffer */ 375 size_t len; /* length of contents */ 376 size_t maplen; /* length of mmap area, or 0 */ 377 Boolean used; /* XXX: have we used the data yet */ 378 }; 379 380 /* 381 * Constructor/destructor for loadedfile 382 */ 383 static struct loadedfile * 384 loadedfile_create(const char *path) 385 { 386 struct loadedfile *lf; 387 388 lf = bmake_malloc(sizeof(*lf)); 389 lf->path = path == NULL ? "(stdin)" : path; 390 lf->buf = NULL; 391 lf->len = 0; 392 lf->maplen = 0; 393 lf->used = FALSE; 394 return lf; 395 } 396 397 static void 398 loadedfile_destroy(struct loadedfile *lf) 399 { 400 if (lf->buf != NULL) { 401 if (lf->maplen > 0) { 402 munmap(lf->buf, lf->maplen); 403 } else { 404 free(lf->buf); 405 } 406 } 407 free(lf); 408 } 409 410 /* 411 * nextbuf() operation for loadedfile, as needed by the weird and twisted 412 * logic below. Once that's cleaned up, we can get rid of lf->used... 413 */ 414 static char * 415 loadedfile_nextbuf(void *x, size_t *len) 416 { 417 struct loadedfile *lf = x; 418 419 if (lf->used) { 420 return NULL; 421 } 422 lf->used = TRUE; 423 *len = lf->len; 424 return lf->buf; 425 } 426 427 /* 428 * Try to get the size of a file. 429 */ 430 static ReturnStatus 431 load_getsize(int fd, size_t *ret) 432 { 433 struct stat st; 434 435 if (fstat(fd, &st) < 0) { 436 return FAILURE; 437 } 438 439 if (!S_ISREG(st.st_mode)) { 440 return FAILURE; 441 } 442 443 /* 444 * st_size is an off_t, which is 64 bits signed; *ret is 445 * size_t, which might be 32 bits unsigned or 64 bits 446 * unsigned. Rather than being elaborate, just punt on 447 * files that are more than 2^31 bytes. We should never 448 * see a makefile that size in practice... 449 * 450 * While we're at it reject negative sizes too, just in case. 451 */ 452 if (st.st_size < 0 || st.st_size > 0x7fffffff) { 453 return FAILURE; 454 } 455 456 *ret = (size_t) st.st_size; 457 return SUCCESS; 458 } 459 460 /* 461 * Read in a file. 462 * 463 * Until the path search logic can be moved under here instead of 464 * being in the caller in another source file, we need to have the fd 465 * passed in already open. Bleh. 466 * 467 * If the path is NULL use stdin and (to insure against fd leaks) 468 * assert that the caller passed in -1. 469 */ 470 static struct loadedfile * 471 loadfile(const char *path, int fd) 472 { 473 struct loadedfile *lf; 474 static long pagesize = 0; 475 ssize_t result; 476 size_t bufpos; 477 478 lf = loadedfile_create(path); 479 480 if (path == NULL) { 481 assert(fd == -1); 482 fd = STDIN_FILENO; 483 } else { 484 #if 0 /* notyet */ 485 fd = open(path, O_RDONLY); 486 if (fd < 0) { 487 ... 488 Error("%s: %s", path, strerror(errno)); 489 exit(1); 490 } 491 #endif 492 } 493 494 if (load_getsize(fd, &lf->len) == SUCCESS) { 495 /* found a size, try mmap */ 496 if (pagesize == 0) 497 pagesize = sysconf(_SC_PAGESIZE); 498 if (pagesize <= 0) { 499 pagesize = 0x1000; 500 } 501 /* round size up to a page */ 502 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 503 504 /* 505 * XXX hack for dealing with empty files; remove when 506 * we're no longer limited by interfacing to the old 507 * logic elsewhere in this file. 508 */ 509 if (lf->maplen == 0) { 510 lf->maplen = pagesize; 511 } 512 513 /* 514 * FUTURE: remove PROT_WRITE when the parser no longer 515 * needs to scribble on the input. 516 */ 517 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 518 MAP_FILE|MAP_COPY, fd, 0); 519 if (lf->buf != MAP_FAILED) { 520 /* succeeded */ 521 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 522 char *b = bmake_malloc(lf->len + 1); 523 b[lf->len] = '\n'; 524 memcpy(b, lf->buf, lf->len++); 525 munmap(lf->buf, lf->maplen); 526 lf->maplen = 0; 527 lf->buf = b; 528 } 529 goto done; 530 } 531 } 532 533 /* cannot mmap; load the traditional way */ 534 535 lf->maplen = 0; 536 lf->len = 1024; 537 lf->buf = bmake_malloc(lf->len); 538 539 bufpos = 0; 540 while (1) { 541 assert(bufpos <= lf->len); 542 if (bufpos == lf->len) { 543 if (lf->len > SIZE_MAX/2) { 544 errno = EFBIG; 545 Error("%s: file too large", path); 546 exit(1); 547 } 548 lf->len *= 2; 549 lf->buf = bmake_realloc(lf->buf, lf->len); 550 } 551 assert(bufpos < lf->len); 552 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 553 if (result < 0) { 554 Error("%s: read error: %s", path, strerror(errno)); 555 exit(1); 556 } 557 if (result == 0) { 558 break; 559 } 560 bufpos += result; 561 } 562 assert(bufpos <= lf->len); 563 lf->len = bufpos; 564 565 /* truncate malloc region to actual length (maybe not useful) */ 566 if (lf->len > 0) { 567 /* as for mmap case, ensure trailing \n */ 568 if (lf->buf[lf->len - 1] != '\n') 569 lf->len++; 570 lf->buf = bmake_realloc(lf->buf, lf->len); 571 lf->buf[lf->len - 1] = '\n'; 572 } 573 574 done: 575 if (path != NULL) { 576 close(fd); 577 } 578 return lf; 579 } 580 581 /* old code */ 582 583 /*- 584 *---------------------------------------------------------------------- 585 * ParseIsEscaped -- 586 * Check if the current character is escaped on the current line 587 * 588 * Results: 589 * 0 if the character is not backslash escaped, 1 otherwise 590 * 591 * Side Effects: 592 * None 593 *---------------------------------------------------------------------- 594 */ 595 static int 596 ParseIsEscaped(const char *line, const char *c) 597 { 598 int active = 0; 599 for (;;) { 600 if (line == c) 601 return active; 602 if (*--c != '\\') 603 return active; 604 active = !active; 605 } 606 } 607 608 /*- 609 *---------------------------------------------------------------------- 610 * ParseFindKeyword -- 611 * Look in the table of keywords for one matching the given string. 612 * 613 * Input: 614 * str String to find 615 * 616 * Results: 617 * The index of the keyword, or -1 if it isn't there. 618 * 619 * Side Effects: 620 * None 621 *---------------------------------------------------------------------- 622 */ 623 static int 624 ParseFindKeyword(const char *str) 625 { 626 int start, end, cur; 627 int diff; 628 629 start = 0; 630 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 631 632 do { 633 cur = start + ((end - start) / 2); 634 diff = strcmp(str, parseKeywords[cur].name); 635 636 if (diff == 0) { 637 return cur; 638 } else if (diff < 0) { 639 end = cur - 1; 640 } else { 641 start = cur + 1; 642 } 643 } while (start <= end); 644 return -1; 645 } 646 647 /*- 648 * ParseVErrorInternal -- 649 * Error message abort function for parsing. Prints out the context 650 * of the error (line number and file) as well as the message with 651 * two optional arguments. 652 * 653 * Results: 654 * None 655 * 656 * Side Effects: 657 * "fatals" is incremented if the level is PARSE_FATAL. 658 */ 659 /* VARARGS */ 660 static void 661 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 662 const char *fmt, va_list ap) 663 { 664 static Boolean fatal_warning_error_printed = FALSE; 665 char dirbuf[MAXPATHLEN+1]; 666 667 (void)fprintf(f, "%s: ", progname); 668 669 if (cfname != NULL) { 670 (void)fprintf(f, "\""); 671 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 672 char *cp, *cp2; 673 const char *dir, *fname; 674 675 /* 676 * Nothing is more annoying than not knowing 677 * which Makefile is the culprit; we try ${.PARSEDIR} 678 * and apply realpath(3) if not absolute. 679 */ 680 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 681 if (dir == NULL) 682 dir = "."; 683 if (*dir != '/') { 684 dir = realpath(dir, dirbuf); 685 } 686 fname = Var_Value(".PARSEFILE", VAR_GLOBAL, &cp2); 687 if (fname == NULL) { 688 if ((fname = strrchr(cfname, '/'))) 689 fname++; 690 else 691 fname = cfname; 692 } 693 (void)fprintf(f, "%s/%s", dir, fname); 694 bmake_free(cp2); 695 bmake_free(cp); 696 } else 697 (void)fprintf(f, "%s", cfname); 698 699 (void)fprintf(f, "\" line %d: ", (int)clineno); 700 } 701 if (type == PARSE_WARNING) 702 (void)fprintf(f, "warning: "); 703 (void)vfprintf(f, fmt, ap); 704 (void)fprintf(f, "\n"); 705 (void)fflush(f); 706 if (type == PARSE_INFO) 707 return; 708 if (type == PARSE_FATAL || parseWarnFatal) 709 fatals += 1; 710 if (parseWarnFatal && !fatal_warning_error_printed) { 711 Error("parsing warnings being treated as errors"); 712 fatal_warning_error_printed = TRUE; 713 } 714 } 715 716 /*- 717 * ParseErrorInternal -- 718 * Error function 719 * 720 * Results: 721 * None 722 * 723 * Side Effects: 724 * None 725 */ 726 /* VARARGS */ 727 static void 728 ParseErrorInternal(const char *cfname, size_t clineno, int type, 729 const char *fmt, ...) 730 { 731 va_list ap; 732 733 va_start(ap, fmt); 734 (void)fflush(stdout); 735 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 736 va_end(ap); 737 738 if (debug_file != stderr && debug_file != stdout) { 739 va_start(ap, fmt); 740 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 741 va_end(ap); 742 } 743 } 744 745 /*- 746 * Parse_Error -- 747 * External interface to ParseErrorInternal; uses the default filename 748 * Line number. 749 * 750 * Results: 751 * None 752 * 753 * Side Effects: 754 * None 755 */ 756 /* VARARGS */ 757 void 758 Parse_Error(int type, const char *fmt, ...) 759 { 760 va_list ap; 761 const char *fname; 762 size_t lineno; 763 764 if (curFile == NULL) { 765 fname = NULL; 766 lineno = 0; 767 } else { 768 fname = curFile->fname; 769 lineno = curFile->lineno; 770 } 771 772 va_start(ap, fmt); 773 (void)fflush(stdout); 774 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 775 va_end(ap); 776 777 if (debug_file != stderr && debug_file != stdout) { 778 va_start(ap, fmt); 779 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 780 va_end(ap); 781 } 782 } 783 784 785 /* 786 * ParseMessage 787 * Parse a .info .warning or .error directive 788 * 789 * The input is the line minus the ".". We substitute 790 * variables, print the message and exit(1) (for .error) or just print 791 * a warning if the directive is malformed. 792 */ 793 static Boolean 794 ParseMessage(char *line) 795 { 796 int mtype; 797 798 switch(*line) { 799 case 'i': 800 mtype = PARSE_INFO; 801 break; 802 case 'w': 803 mtype = PARSE_WARNING; 804 break; 805 case 'e': 806 mtype = PARSE_FATAL; 807 break; 808 default: 809 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 810 return FALSE; 811 } 812 813 while (isalpha((unsigned char)*line)) 814 line++; 815 if (!isspace((unsigned char)*line)) 816 return FALSE; /* not for us */ 817 while (isspace((unsigned char)*line)) 818 line++; 819 820 line = Var_Subst(line, VAR_CMD, VARE_WANTRES); 821 Parse_Error(mtype, "%s", line); 822 free(line); 823 824 if (mtype == PARSE_FATAL) { 825 /* Terminate immediately. */ 826 exit(1); 827 } 828 return TRUE; 829 } 830 831 /*- 832 *--------------------------------------------------------------------- 833 * ParseLinkSrc -- 834 * Link the parent node to its new child. Used in a Lst_ForEach by 835 * ParseDoDependency. If the specType isn't 'Not', the parent 836 * isn't linked as a parent of the child. 837 * 838 * Input: 839 * pgnp The parent node 840 * cgpn The child node 841 * 842 * Results: 843 * Always = 0 844 * 845 * Side Effects: 846 * New elements are added to the parents list of cgn and the 847 * children list of cgn. the unmade field of pgn is updated 848 * to reflect the additional child. 849 *--------------------------------------------------------------------- 850 */ 851 static int 852 ParseLinkSrc(void *pgnp, void *cgnp) 853 { 854 GNode *pgn = (GNode *)pgnp; 855 GNode *cgn = (GNode *)cgnp; 856 857 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 858 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 859 (void)Lst_AtEnd(pgn->children, cgn); 860 if (specType == Not) 861 (void)Lst_AtEnd(cgn->parents, pgn); 862 pgn->unmade += 1; 863 if (DEBUG(PARSE)) { 864 fprintf(debug_file, "# %s: added child %s - %s\n", __func__, 865 pgn->name, cgn->name); 866 Targ_PrintNode(pgn, 0); 867 Targ_PrintNode(cgn, 0); 868 } 869 return 0; 870 } 871 872 /*- 873 *--------------------------------------------------------------------- 874 * ParseDoOp -- 875 * Apply the parsed operator to the given target node. Used in a 876 * Lst_ForEach call by ParseDoDependency once all targets have 877 * been found and their operator parsed. If the previous and new 878 * operators are incompatible, a major error is taken. 879 * 880 * Input: 881 * gnp The node to which the operator is to be applied 882 * opp The operator to apply 883 * 884 * Results: 885 * Always 0 886 * 887 * Side Effects: 888 * The type field of the node is altered to reflect any new bits in 889 * the op. 890 *--------------------------------------------------------------------- 891 */ 892 static int 893 ParseDoOp(void *gnp, void *opp) 894 { 895 GNode *gn = (GNode *)gnp; 896 int op = *(int *)opp; 897 /* 898 * If the dependency mask of the operator and the node don't match and 899 * the node has actually had an operator applied to it before, and 900 * the operator actually has some dependency information in it, complain. 901 */ 902 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 903 !OP_NOP(gn->type) && !OP_NOP(op)) 904 { 905 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 906 return 1; 907 } 908 909 if (op == OP_DOUBLEDEP && (gn->type & OP_OPMASK) == OP_DOUBLEDEP) { 910 /* 911 * If the node was the object of a :: operator, we need to create a 912 * new instance of it for the children and commands on this dependency 913 * line. The new instance is placed on the 'cohorts' list of the 914 * initial one (note the initial one is not on its own cohorts list) 915 * and the new instance is linked to all parents of the initial 916 * instance. 917 */ 918 GNode *cohort; 919 920 /* 921 * Propagate copied bits to the initial node. They'll be propagated 922 * back to the rest of the cohorts later. 923 */ 924 gn->type |= op & ~OP_OPMASK; 925 926 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 927 if (doing_depend) 928 ParseMark(cohort); 929 /* 930 * Make the cohort invisible as well to avoid duplicating it into 931 * other variables. True, parents of this target won't tend to do 932 * anything with their local variables, but better safe than 933 * sorry. (I think this is pointless now, since the relevant list 934 * traversals will no longer see this node anyway. -mycroft) 935 */ 936 cohort->type = op | OP_INVISIBLE; 937 (void)Lst_AtEnd(gn->cohorts, cohort); 938 cohort->centurion = gn; 939 gn->unmade_cohorts += 1; 940 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 941 gn->unmade_cohorts); 942 } else { 943 /* 944 * We don't want to nuke any previous flags (whatever they were) so we 945 * just OR the new operator into the old 946 */ 947 gn->type |= op; 948 } 949 950 return 0; 951 } 952 953 /*- 954 *--------------------------------------------------------------------- 955 * ParseDoSrc -- 956 * Given the name of a source, figure out if it is an attribute 957 * and apply it to the targets if it is. Else decide if there is 958 * some attribute which should be applied *to* the source because 959 * of some special target and apply it if so. Otherwise, make the 960 * source be a child of the targets in the list 'targets' 961 * 962 * Input: 963 * tOp operator (if any) from special targets 964 * src name of the source to handle 965 * 966 * Results: 967 * None 968 * 969 * Side Effects: 970 * Operator bits may be added to the list of targets or to the source. 971 * The targets may have a new source added to their lists of children. 972 *--------------------------------------------------------------------- 973 */ 974 static void 975 ParseDoSrc(int tOp, const char *src) 976 { 977 GNode *gn = NULL; 978 static int wait_number = 0; 979 char wait_src[16]; 980 981 if (*src == '.' && isupper ((unsigned char)src[1])) { 982 int keywd = ParseFindKeyword(src); 983 if (keywd != -1) { 984 int op = parseKeywords[keywd].op; 985 if (op != 0) { 986 Lst_ForEach(targets, ParseDoOp, &op); 987 return; 988 } 989 if (parseKeywords[keywd].spec == Wait) { 990 /* 991 * We add a .WAIT node in the dependency list. 992 * After any dynamic dependencies (and filename globbing) 993 * have happened, it is given a dependency on the each 994 * previous child back to and previous .WAIT node. 995 * The next child won't be scheduled until the .WAIT node 996 * is built. 997 * We give each .WAIT node a unique name (mainly for diag). 998 */ 999 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 1000 gn = Targ_FindNode(wait_src, TARG_NOHASH); 1001 if (doing_depend) 1002 ParseMark(gn); 1003 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 1004 Lst_ForEach(targets, ParseLinkSrc, gn); 1005 return; 1006 } 1007 } 1008 } 1009 1010 switch (specType) { 1011 case Main: 1012 /* 1013 * If we have noted the existence of a .MAIN, it means we need 1014 * to add the sources of said target to the list of things 1015 * to create. The string 'src' is likely to be free, so we 1016 * must make a new copy of it. Note that this will only be 1017 * invoked if the user didn't specify a target on the command 1018 * line. This is to allow #ifmake's to succeed, or something... 1019 */ 1020 (void)Lst_AtEnd(create, bmake_strdup(src)); 1021 /* 1022 * Add the name to the .TARGETS variable as well, so the user can 1023 * employ that, if desired. 1024 */ 1025 Var_Append(".TARGETS", src, VAR_GLOBAL); 1026 return; 1027 1028 case Order: 1029 /* 1030 * Create proper predecessor/successor links between the previous 1031 * source and the current one. 1032 */ 1033 gn = Targ_FindNode(src, TARG_CREATE); 1034 if (doing_depend) 1035 ParseMark(gn); 1036 if (predecessor != NULL) { 1037 (void)Lst_AtEnd(predecessor->order_succ, gn); 1038 (void)Lst_AtEnd(gn->order_pred, predecessor); 1039 if (DEBUG(PARSE)) { 1040 fprintf(debug_file, "# %s: added Order dependency %s - %s\n", 1041 __func__, predecessor->name, gn->name); 1042 Targ_PrintNode(predecessor, 0); 1043 Targ_PrintNode(gn, 0); 1044 } 1045 } 1046 /* 1047 * The current source now becomes the predecessor for the next one. 1048 */ 1049 predecessor = gn; 1050 break; 1051 1052 default: 1053 /* 1054 * If the source is not an attribute, we need to find/create 1055 * a node for it. After that we can apply any operator to it 1056 * from a special target or link it to its parents, as 1057 * appropriate. 1058 * 1059 * In the case of a source that was the object of a :: operator, 1060 * the attribute is applied to all of its instances (as kept in 1061 * the 'cohorts' list of the node) or all the cohorts are linked 1062 * to all the targets. 1063 */ 1064 1065 /* Find/create the 'src' node and attach to all targets */ 1066 gn = Targ_FindNode(src, TARG_CREATE); 1067 if (doing_depend) 1068 ParseMark(gn); 1069 if (tOp) { 1070 gn->type |= tOp; 1071 } else { 1072 Lst_ForEach(targets, ParseLinkSrc, gn); 1073 } 1074 break; 1075 } 1076 } 1077 1078 /*- 1079 *----------------------------------------------------------------------- 1080 * ParseFindMain -- 1081 * Find a real target in the list and set it to be the main one. 1082 * Called by ParseDoDependency when a main target hasn't been found 1083 * yet. 1084 * 1085 * Input: 1086 * gnp Node to examine 1087 * 1088 * Results: 1089 * 0 if main not found yet, 1 if it is. 1090 * 1091 * Side Effects: 1092 * mainNode is changed and Targ_SetMain is called. 1093 * 1094 *----------------------------------------------------------------------- 1095 */ 1096 static int 1097 ParseFindMain(void *gnp, void *dummy MAKE_ATTR_UNUSED) 1098 { 1099 GNode *gn = (GNode *)gnp; 1100 if (!(gn->type & OP_NOTARGET)) { 1101 mainNode = gn; 1102 Targ_SetMain(gn); 1103 return 1; 1104 } else { 1105 return 0; 1106 } 1107 } 1108 1109 /*- 1110 *----------------------------------------------------------------------- 1111 * ParseAddDir -- 1112 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1113 * 1114 * Results: 1115 * === 0 1116 * 1117 * Side Effects: 1118 * See Dir_AddDir. 1119 * 1120 *----------------------------------------------------------------------- 1121 */ 1122 static int 1123 ParseAddDir(void *path, void *name) 1124 { 1125 (void)Dir_AddDir((Lst) path, (char *)name); 1126 return 0; 1127 } 1128 1129 /*- 1130 *----------------------------------------------------------------------- 1131 * ParseClearPath -- 1132 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1133 * 1134 * Results: 1135 * === 0 1136 * 1137 * Side Effects: 1138 * See Dir_ClearPath 1139 * 1140 *----------------------------------------------------------------------- 1141 */ 1142 static int 1143 ParseClearPath(void *path, void *dummy MAKE_ATTR_UNUSED) 1144 { 1145 Dir_ClearPath((Lst) path); 1146 return 0; 1147 } 1148 1149 /*- 1150 *--------------------------------------------------------------------- 1151 * ParseDoDependency -- 1152 * Parse the dependency line in line. 1153 * 1154 * Input: 1155 * line the line to parse 1156 * 1157 * Results: 1158 * None 1159 * 1160 * Side Effects: 1161 * The nodes of the sources are linked as children to the nodes of the 1162 * targets. Some nodes may be created. 1163 * 1164 * We parse a dependency line by first extracting words from the line and 1165 * finding nodes in the list of all targets with that name. This is done 1166 * until a character is encountered which is an operator character. Currently 1167 * these are only ! and :. At this point the operator is parsed and the 1168 * pointer into the line advanced until the first source is encountered. 1169 * The parsed operator is applied to each node in the 'targets' list, 1170 * which is where the nodes found for the targets are kept, by means of 1171 * the ParseDoOp function. 1172 * The sources are read in much the same way as the targets were except 1173 * that now they are expanded using the wildcarding scheme of the C-Shell 1174 * and all instances of the resulting words in the list of all targets 1175 * are found. Each of the resulting nodes is then linked to each of the 1176 * targets as one of its children. 1177 * Certain targets are handled specially. These are the ones detailed 1178 * by the specType variable. 1179 * The storing of transformation rules is also taken care of here. 1180 * A target is recognized as a transformation rule by calling 1181 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1182 * from the suffix module via Suff_AddTransform rather than the standard 1183 * Targ_FindNode in the target module. 1184 *--------------------------------------------------------------------- 1185 */ 1186 static void 1187 ParseDoDependency(char *line) 1188 { 1189 char *cp; /* our current position */ 1190 GNode *gn = NULL; /* a general purpose temporary node */ 1191 int op; /* the operator on the line */ 1192 char savec; /* a place to save a character */ 1193 Lst paths; /* List of search paths to alter when parsing 1194 * a list of .PATH targets */ 1195 int tOp; /* operator from special target */ 1196 Lst sources; /* list of archive source names after 1197 * expansion */ 1198 Lst curTargs; /* list of target names to be found and added 1199 * to the targets list */ 1200 char *lstart = line; 1201 1202 if (DEBUG(PARSE)) 1203 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1204 tOp = 0; 1205 1206 specType = Not; 1207 paths = NULL; 1208 1209 curTargs = Lst_Init(FALSE); 1210 1211 /* 1212 * First, grind through the targets. 1213 */ 1214 1215 do { 1216 /* 1217 * Here LINE points to the beginning of the next word, and 1218 * LSTART points to the actual beginning of the line. 1219 */ 1220 1221 /* Find the end of the next word. */ 1222 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1223 !(isspace((unsigned char)*cp) || 1224 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1225 cp++) { 1226 if (*cp == '$') { 1227 /* 1228 * Must be a dynamic source (would have been expanded 1229 * otherwise), so call the Var module to parse the puppy 1230 * so we can safely advance beyond it...There should be 1231 * no errors in this, as they would have been discovered 1232 * in the initial Var_Subst and we wouldn't be here. 1233 */ 1234 int length; 1235 void *freeIt; 1236 1237 (void)Var_Parse(cp, VAR_CMD, VARE_UNDEFERR|VARE_WANTRES, 1238 &length, &freeIt); 1239 free(freeIt); 1240 cp += length-1; 1241 } 1242 } 1243 1244 /* 1245 * If the word is followed by a left parenthesis, it's the 1246 * name of an object file inside an archive (ar file). 1247 */ 1248 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1249 /* 1250 * Archives must be handled specially to make sure the OP_ARCHV 1251 * flag is set in their 'type' field, for one thing, and because 1252 * things like "archive(file1.o file2.o file3.o)" are permissible. 1253 * Arch_ParseArchive will set 'line' to be the first non-blank 1254 * after the archive-spec. It creates/finds nodes for the members 1255 * and places them on the given list, returning SUCCESS if all 1256 * went well and FAILURE if there was an error in the 1257 * specification. On error, line should remain untouched. 1258 */ 1259 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1260 Parse_Error(PARSE_FATAL, 1261 "Error in archive specification: \"%s\"", line); 1262 goto out; 1263 } else { 1264 /* Done with this word; on to the next. */ 1265 cp = line; 1266 continue; 1267 } 1268 } 1269 1270 if (!*cp) { 1271 /* 1272 * We got to the end of the line while we were still 1273 * looking at targets. 1274 * 1275 * Ending a dependency line without an operator is a Bozo 1276 * no-no. As a heuristic, this is also often triggered by 1277 * undetected conflicts from cvs/rcs merges. 1278 */ 1279 if ((strncmp(line, "<<<<<<", 6) == 0) || 1280 (strncmp(line, "======", 6) == 0) || 1281 (strncmp(line, ">>>>>>", 6) == 0)) 1282 Parse_Error(PARSE_FATAL, 1283 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1284 else if (lstart[0] == '.') { 1285 const char *dirstart = lstart + 1; 1286 const char *dirend; 1287 while (isspace((unsigned char)*dirstart)) 1288 dirstart++; 1289 dirend = dirstart; 1290 while (isalnum((unsigned char)*dirend) || *dirend == '-') 1291 dirend++; 1292 Parse_Error(PARSE_FATAL, "Unknown directive \"%.*s\"", 1293 (int)(dirend - dirstart), dirstart); 1294 } else 1295 Parse_Error(PARSE_FATAL, "Need an operator"); 1296 goto out; 1297 } 1298 1299 /* Insert a null terminator. */ 1300 savec = *cp; 1301 *cp = '\0'; 1302 1303 /* 1304 * Got the word. See if it's a special target and if so set 1305 * specType to match it. 1306 */ 1307 if (*line == '.' && isupper ((unsigned char)line[1])) { 1308 /* 1309 * See if the target is a special target that must have it 1310 * or its sources handled specially. 1311 */ 1312 int keywd = ParseFindKeyword(line); 1313 if (keywd != -1) { 1314 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1315 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1316 goto out; 1317 } 1318 1319 specType = parseKeywords[keywd].spec; 1320 tOp = parseKeywords[keywd].op; 1321 1322 /* 1323 * Certain special targets have special semantics: 1324 * .PATH Have to set the dirSearchPath 1325 * variable too 1326 * .MAIN Its sources are only used if 1327 * nothing has been specified to 1328 * create. 1329 * .DEFAULT Need to create a node to hang 1330 * commands on, but we don't want 1331 * it in the graph, nor do we want 1332 * it to be the Main Target, so we 1333 * create it, set OP_NOTMAIN and 1334 * add it to the list, setting 1335 * DEFAULT to the new node for 1336 * later use. We claim the node is 1337 * A transformation rule to make 1338 * life easier later, when we'll 1339 * use Make_HandleUse to actually 1340 * apply the .DEFAULT commands. 1341 * .PHONY The list of targets 1342 * .NOPATH Don't search for file in the path 1343 * .STALE 1344 * .BEGIN 1345 * .END 1346 * .ERROR 1347 * .DELETE_ON_ERROR 1348 * .INTERRUPT Are not to be considered the 1349 * main target. 1350 * .NOTPARALLEL Make only one target at a time. 1351 * .SINGLESHELL Create a shell for each command. 1352 * .ORDER Must set initial predecessor to NULL 1353 */ 1354 switch (specType) { 1355 case ExPath: 1356 if (paths == NULL) { 1357 paths = Lst_Init(FALSE); 1358 } 1359 (void)Lst_AtEnd(paths, dirSearchPath); 1360 break; 1361 case Main: 1362 if (!Lst_IsEmpty(create)) { 1363 specType = Not; 1364 } 1365 break; 1366 case Begin: 1367 case End: 1368 case Stale: 1369 case dotError: 1370 case Interrupt: 1371 gn = Targ_FindNode(line, TARG_CREATE); 1372 if (doing_depend) 1373 ParseMark(gn); 1374 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1375 (void)Lst_AtEnd(targets, gn); 1376 break; 1377 case Default: 1378 gn = Targ_NewGN(".DEFAULT"); 1379 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1380 (void)Lst_AtEnd(targets, gn); 1381 DEFAULT = gn; 1382 break; 1383 case DeleteOnError: 1384 deleteOnError = TRUE; 1385 break; 1386 case NotParallel: 1387 maxJobs = 1; 1388 break; 1389 case SingleShell: 1390 compatMake = TRUE; 1391 break; 1392 case Order: 1393 predecessor = NULL; 1394 break; 1395 default: 1396 break; 1397 } 1398 } else if (strncmp(line, ".PATH", 5) == 0) { 1399 /* 1400 * .PATH<suffix> has to be handled specially. 1401 * Call on the suffix module to give us a path to 1402 * modify. 1403 */ 1404 Lst path; 1405 1406 specType = ExPath; 1407 path = Suff_GetPath(&line[5]); 1408 if (path == NULL) { 1409 Parse_Error(PARSE_FATAL, 1410 "Suffix '%s' not defined (yet)", 1411 &line[5]); 1412 goto out; 1413 } else { 1414 if (paths == NULL) { 1415 paths = Lst_Init(FALSE); 1416 } 1417 (void)Lst_AtEnd(paths, path); 1418 } 1419 } 1420 } 1421 1422 /* 1423 * Have word in line. Get or create its node and stick it at 1424 * the end of the targets list 1425 */ 1426 if (specType == Not && *line != '\0') { 1427 if (Dir_HasWildcards(line)) { 1428 /* 1429 * Targets are to be sought only in the current directory, 1430 * so create an empty path for the thing. Note we need to 1431 * use Dir_Destroy in the destruction of the path as the 1432 * Dir module could have added a directory to the path... 1433 */ 1434 Lst emptyPath = Lst_Init(FALSE); 1435 1436 Dir_Expand(line, emptyPath, curTargs); 1437 1438 Lst_Destroy(emptyPath, Dir_Destroy); 1439 } else { 1440 /* 1441 * No wildcards, but we want to avoid code duplication, 1442 * so create a list with the word on it. 1443 */ 1444 (void)Lst_AtEnd(curTargs, line); 1445 } 1446 1447 /* Apply the targets. */ 1448 1449 while(!Lst_IsEmpty(curTargs)) { 1450 char *targName = (char *)Lst_DeQueue(curTargs); 1451 1452 if (!Suff_IsTransform (targName)) { 1453 gn = Targ_FindNode(targName, TARG_CREATE); 1454 } else { 1455 gn = Suff_AddTransform(targName); 1456 } 1457 if (doing_depend) 1458 ParseMark(gn); 1459 1460 (void)Lst_AtEnd(targets, gn); 1461 } 1462 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1463 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1464 } 1465 1466 /* Don't need the inserted null terminator any more. */ 1467 *cp = savec; 1468 1469 /* 1470 * If it is a special type and not .PATH, it's the only target we 1471 * allow on this line... 1472 */ 1473 if (specType != Not && specType != ExPath) { 1474 Boolean warning = FALSE; 1475 1476 while (*cp && (ParseIsEscaped(lstart, cp) || 1477 (*cp != '!' && *cp != ':'))) { 1478 if (ParseIsEscaped(lstart, cp) || 1479 (*cp != ' ' && *cp != '\t')) { 1480 warning = TRUE; 1481 } 1482 cp++; 1483 } 1484 if (warning) { 1485 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1486 } 1487 } else { 1488 while (*cp && isspace ((unsigned char)*cp)) { 1489 cp++; 1490 } 1491 } 1492 line = cp; 1493 } while (*line && (ParseIsEscaped(lstart, line) || 1494 (*line != '!' && *line != ':'))); 1495 1496 /* 1497 * Don't need the list of target names anymore... 1498 */ 1499 Lst_Destroy(curTargs, NULL); 1500 curTargs = NULL; 1501 1502 if (!Lst_IsEmpty(targets)) { 1503 switch(specType) { 1504 default: 1505 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1506 break; 1507 case Default: 1508 case Stale: 1509 case Begin: 1510 case End: 1511 case dotError: 1512 case Interrupt: 1513 /* 1514 * These four create nodes on which to hang commands, so 1515 * targets shouldn't be empty... 1516 */ 1517 case Not: 1518 /* 1519 * Nothing special here -- targets can be empty if it wants. 1520 */ 1521 break; 1522 } 1523 } 1524 1525 /* 1526 * Have now parsed all the target names. Must parse the operator next. The 1527 * result is left in op . 1528 */ 1529 if (*cp == '!') { 1530 op = OP_FORCE; 1531 } else if (*cp == ':') { 1532 if (cp[1] == ':') { 1533 op = OP_DOUBLEDEP; 1534 cp++; 1535 } else { 1536 op = OP_DEPENDS; 1537 } 1538 } else { 1539 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1540 : "Missing dependency operator"); 1541 goto out; 1542 } 1543 1544 /* Advance beyond the operator */ 1545 cp++; 1546 1547 /* 1548 * Apply the operator to the target. This is how we remember which 1549 * operator a target was defined with. It fails if the operator 1550 * used isn't consistent across all references. 1551 */ 1552 Lst_ForEach(targets, ParseDoOp, &op); 1553 1554 /* 1555 * Onward to the sources. 1556 * 1557 * LINE will now point to the first source word, if any, or the 1558 * end of the string if not. 1559 */ 1560 while (*cp && isspace ((unsigned char)*cp)) { 1561 cp++; 1562 } 1563 line = cp; 1564 1565 /* 1566 * Several special targets take different actions if present with no 1567 * sources: 1568 * a .SUFFIXES line with no sources clears out all old suffixes 1569 * a .PRECIOUS line makes all targets precious 1570 * a .IGNORE line ignores errors for all targets 1571 * a .SILENT line creates silence when making all targets 1572 * a .PATH removes all directories from the search path(s). 1573 */ 1574 if (!*line) { 1575 switch (specType) { 1576 case Suffixes: 1577 Suff_ClearSuffixes(); 1578 break; 1579 case Precious: 1580 allPrecious = TRUE; 1581 break; 1582 case Ignore: 1583 ignoreErrors = TRUE; 1584 break; 1585 case Silent: 1586 beSilent = TRUE; 1587 break; 1588 case ExPath: 1589 Lst_ForEach(paths, ParseClearPath, NULL); 1590 Dir_SetPATH(); 1591 break; 1592 #ifdef POSIX 1593 case Posix: 1594 Var_Set("%POSIX", "1003.2", VAR_GLOBAL); 1595 break; 1596 #endif 1597 default: 1598 break; 1599 } 1600 } else if (specType == MFlags) { 1601 /* 1602 * Call on functions in main.c to deal with these arguments and 1603 * set the initial character to a null-character so the loop to 1604 * get sources won't get anything 1605 */ 1606 Main_ParseArgLine(line); 1607 *line = '\0'; 1608 } else if (specType == ExShell) { 1609 if (Job_ParseShell(line) != SUCCESS) { 1610 Parse_Error(PARSE_FATAL, "improper shell specification"); 1611 goto out; 1612 } 1613 *line = '\0'; 1614 } else if (specType == NotParallel || specType == SingleShell || 1615 specType == DeleteOnError) { 1616 *line = '\0'; 1617 } 1618 1619 /* 1620 * NOW GO FOR THE SOURCES 1621 */ 1622 if (specType == Suffixes || specType == ExPath || 1623 specType == Includes || specType == Libs || 1624 specType == Null || specType == ExObjdir) 1625 { 1626 while (*line) { 1627 /* 1628 * If the target was one that doesn't take files as its sources 1629 * but takes something like suffixes, we take each 1630 * space-separated word on the line as a something and deal 1631 * with it accordingly. 1632 * 1633 * If the target was .SUFFIXES, we take each source as a 1634 * suffix and add it to the list of suffixes maintained by the 1635 * Suff module. 1636 * 1637 * If the target was a .PATH, we add the source as a directory 1638 * to search on the search path. 1639 * 1640 * If it was .INCLUDES, the source is taken to be the suffix of 1641 * files which will be #included and whose search path should 1642 * be present in the .INCLUDES variable. 1643 * 1644 * If it was .LIBS, the source is taken to be the suffix of 1645 * files which are considered libraries and whose search path 1646 * should be present in the .LIBS variable. 1647 * 1648 * If it was .NULL, the source is the suffix to use when a file 1649 * has no valid suffix. 1650 * 1651 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1652 * and will cause make to do a new chdir to that path. 1653 */ 1654 while (*cp && !isspace ((unsigned char)*cp)) { 1655 cp++; 1656 } 1657 savec = *cp; 1658 *cp = '\0'; 1659 switch (specType) { 1660 case Suffixes: 1661 Suff_AddSuffix(line, &mainNode); 1662 break; 1663 case ExPath: 1664 Lst_ForEach(paths, ParseAddDir, line); 1665 break; 1666 case Includes: 1667 Suff_AddInclude(line); 1668 break; 1669 case Libs: 1670 Suff_AddLib(line); 1671 break; 1672 case Null: 1673 Suff_SetNull(line); 1674 break; 1675 case ExObjdir: 1676 Main_SetObjdir("%s", line); 1677 break; 1678 default: 1679 break; 1680 } 1681 *cp = savec; 1682 if (savec != '\0') { 1683 cp++; 1684 } 1685 while (*cp && isspace ((unsigned char)*cp)) { 1686 cp++; 1687 } 1688 line = cp; 1689 } 1690 if (paths) { 1691 Lst_Destroy(paths, NULL); 1692 paths = NULL; 1693 } 1694 if (specType == ExPath) 1695 Dir_SetPATH(); 1696 } else { 1697 assert(paths == NULL); 1698 while (*line) { 1699 /* 1700 * The targets take real sources, so we must beware of archive 1701 * specifications (i.e. things with left parentheses in them) 1702 * and handle them accordingly. 1703 */ 1704 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1705 if (*cp == LPAREN && cp > line && cp[-1] != '$') { 1706 /* 1707 * Only stop for a left parenthesis if it isn't at the 1708 * start of a word (that'll be for variable changes 1709 * later) and isn't preceded by a dollar sign (a dynamic 1710 * source). 1711 */ 1712 break; 1713 } 1714 } 1715 1716 if (*cp == LPAREN) { 1717 sources = Lst_Init(FALSE); 1718 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1719 Parse_Error(PARSE_FATAL, 1720 "Error in source archive spec \"%s\"", line); 1721 goto out; 1722 } 1723 1724 while (!Lst_IsEmpty (sources)) { 1725 gn = (GNode *)Lst_DeQueue(sources); 1726 ParseDoSrc(tOp, gn->name); 1727 } 1728 Lst_Destroy(sources, NULL); 1729 cp = line; 1730 } else { 1731 if (*cp) { 1732 *cp = '\0'; 1733 cp += 1; 1734 } 1735 1736 ParseDoSrc(tOp, line); 1737 } 1738 while (*cp && isspace ((unsigned char)*cp)) { 1739 cp++; 1740 } 1741 line = cp; 1742 } 1743 } 1744 1745 if (mainNode == NULL) { 1746 /* 1747 * If we have yet to decide on a main target to make, in the 1748 * absence of any user input, we want the first target on 1749 * the first dependency line that is actually a real target 1750 * (i.e. isn't a .USE or .EXEC rule) to be made. 1751 */ 1752 Lst_ForEach(targets, ParseFindMain, NULL); 1753 } 1754 1755 out: 1756 if (paths) 1757 Lst_Destroy(paths, NULL); 1758 if (curTargs) 1759 Lst_Destroy(curTargs, NULL); 1760 } 1761 1762 /*- 1763 *--------------------------------------------------------------------- 1764 * Parse_IsVar -- 1765 * Return TRUE if the passed line is a variable assignment. A variable 1766 * assignment consists of a single word followed by optional whitespace 1767 * followed by either a += or an = operator. 1768 * This function is used both by the Parse_File function and main when 1769 * parsing the command-line arguments. 1770 * 1771 * Input: 1772 * line the line to check 1773 * 1774 * Results: 1775 * TRUE if it is. FALSE if it ain't 1776 * 1777 * Side Effects: 1778 * none 1779 *--------------------------------------------------------------------- 1780 */ 1781 Boolean 1782 Parse_IsVar(char *line) 1783 { 1784 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1785 char ch; 1786 int level = 0; 1787 #define ISEQOPERATOR(c) \ 1788 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1789 1790 /* 1791 * Skip to variable name 1792 */ 1793 while (*line == ' ' || *line == '\t') 1794 line++; 1795 1796 /* Scan for one of the assignment operators outside a variable expansion */ 1797 while ((ch = *line++) != 0) { 1798 if (ch == '(' || ch == '{') { 1799 level++; 1800 continue; 1801 } 1802 if (ch == ')' || ch == '}') { 1803 level--; 1804 continue; 1805 } 1806 if (level != 0) 1807 continue; 1808 while (ch == ' ' || ch == '\t') { 1809 ch = *line++; 1810 wasSpace = TRUE; 1811 } 1812 #ifdef SUNSHCMD 1813 if (ch == ':' && strncmp(line, "sh", 2) == 0) { 1814 line += 2; 1815 continue; 1816 } 1817 #endif 1818 if (ch == '=') 1819 return TRUE; 1820 if (*line == '=' && ISEQOPERATOR(ch)) 1821 return TRUE; 1822 if (wasSpace) 1823 return FALSE; 1824 } 1825 1826 return FALSE; 1827 } 1828 1829 /*- 1830 *--------------------------------------------------------------------- 1831 * Parse_DoVar -- 1832 * Take the variable assignment in the passed line and do it in the 1833 * global context. 1834 * 1835 * Note: There is a lexical ambiguity with assignment modifier characters 1836 * in variable names. This routine interprets the character before the = 1837 * as a modifier. Therefore, an assignment like 1838 * C++=/usr/bin/CC 1839 * is interpreted as "C+ +=" instead of "C++ =". 1840 * 1841 * Input: 1842 * line a line guaranteed to be a variable assignment. 1843 * This reduces error checks 1844 * ctxt Context in which to do the assignment 1845 * 1846 * Results: 1847 * none 1848 * 1849 * Side Effects: 1850 * the variable structure of the given variable name is altered in the 1851 * global context. 1852 *--------------------------------------------------------------------- 1853 */ 1854 void 1855 Parse_DoVar(char *line, GNode *ctxt) 1856 { 1857 char *cp; /* pointer into line */ 1858 enum { 1859 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1860 } type; /* Type of assignment */ 1861 char *opc; /* ptr to operator character to 1862 * null-terminate the variable name */ 1863 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1864 * i.e. if any variable expansion was 1865 * performed */ 1866 int depth; 1867 1868 /* 1869 * Skip to variable name 1870 */ 1871 while (*line == ' ' || *line == '\t') 1872 line++; 1873 1874 /* 1875 * Skip to operator character, nulling out whitespace as we go 1876 * XXX Rather than counting () and {} we should look for $ and 1877 * then expand the variable. 1878 */ 1879 for (depth = 0, cp = line + 1; depth > 0 || *cp != '='; cp++) { 1880 if (*cp == '(' || *cp == '{') { 1881 depth++; 1882 continue; 1883 } 1884 if (*cp == ')' || *cp == '}') { 1885 depth--; 1886 continue; 1887 } 1888 if (depth == 0 && isspace ((unsigned char)*cp)) { 1889 *cp = '\0'; 1890 } 1891 } 1892 opc = cp-1; /* operator is the previous character */ 1893 *cp++ = '\0'; /* nuke the = */ 1894 1895 /* 1896 * Check operator type 1897 */ 1898 switch (*opc) { 1899 case '+': 1900 type = VAR_APPEND; 1901 *opc = '\0'; 1902 break; 1903 1904 case '?': 1905 /* 1906 * If the variable already has a value, we don't do anything. 1907 */ 1908 *opc = '\0'; 1909 if (Var_Exists(line, ctxt)) { 1910 return; 1911 } else { 1912 type = VAR_NORMAL; 1913 } 1914 break; 1915 1916 case ':': 1917 type = VAR_SUBST; 1918 *opc = '\0'; 1919 break; 1920 1921 case '!': 1922 type = VAR_SHELL; 1923 *opc = '\0'; 1924 break; 1925 1926 default: 1927 #ifdef SUNSHCMD 1928 while (opc > line && *opc != ':') 1929 opc--; 1930 1931 if (strncmp(opc, ":sh", 3) == 0) { 1932 type = VAR_SHELL; 1933 *opc = '\0'; 1934 break; 1935 } 1936 #endif 1937 type = VAR_NORMAL; 1938 break; 1939 } 1940 1941 while (isspace((unsigned char)*cp)) 1942 cp++; 1943 1944 if (DEBUG(LINT)) { 1945 if (type != VAR_SUBST && strchr(cp, '$') != NULL) { 1946 /* sanity check now */ 1947 char *cp2; 1948 1949 cp2 = Var_Subst(cp, ctxt, VARE_ASSIGN); 1950 free(cp2); 1951 } 1952 } 1953 1954 if (type == VAR_APPEND) { 1955 Var_Append(line, cp, ctxt); 1956 } else if (type == VAR_SUBST) { 1957 /* 1958 * Allow variables in the old value to be undefined, but leave their 1959 * invocation alone -- this is done by forcing oldVars to be false. 1960 * XXX: This can cause recursive variables, but that's not hard to do, 1961 * and this allows someone to do something like 1962 * 1963 * CFLAGS = $(.INCLUDES) 1964 * CFLAGS := -I.. $(CFLAGS) 1965 * 1966 * And not get an error. 1967 */ 1968 Boolean oldOldVars = oldVars; 1969 1970 oldVars = FALSE; 1971 1972 /* 1973 * make sure that we set the variable the first time to nothing 1974 * so that it gets substituted! 1975 */ 1976 if (!Var_Exists(line, ctxt)) 1977 Var_Set(line, "", ctxt); 1978 1979 cp = Var_Subst(cp, ctxt, VARE_WANTRES|VARE_ASSIGN); 1980 oldVars = oldOldVars; 1981 freeCp = TRUE; 1982 1983 Var_Set(line, cp, ctxt); 1984 } else if (type == VAR_SHELL) { 1985 char *res; 1986 const char *error; 1987 1988 if (strchr(cp, '$') != NULL) { 1989 /* 1990 * There's a dollar sign in the command, so perform variable 1991 * expansion on the whole thing. The resulting string will need 1992 * freeing when we're done. 1993 */ 1994 cp = Var_Subst(cp, VAR_CMD, VARE_UNDEFERR|VARE_WANTRES); 1995 freeCp = TRUE; 1996 } 1997 1998 res = Cmd_Exec(cp, &error); 1999 Var_Set(line, res, ctxt); 2000 free(res); 2001 2002 if (error) 2003 Parse_Error(PARSE_WARNING, error, cp); 2004 } else { 2005 /* 2006 * Normal assignment -- just do it. 2007 */ 2008 Var_Set(line, cp, ctxt); 2009 } 2010 if (strcmp(line, MAKEOVERRIDES) == 0) 2011 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 2012 else if (strcmp(line, ".CURDIR") == 0) { 2013 /* 2014 * Somone is being (too?) clever... 2015 * Let's pretend they know what they are doing and 2016 * re-initialize the 'cur' Path. 2017 */ 2018 Dir_InitCur(cp); 2019 Dir_SetPATH(); 2020 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 2021 Job_SetPrefix(); 2022 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 2023 Var_Export(cp, FALSE); 2024 } 2025 if (freeCp) 2026 free(cp); 2027 } 2028 2029 2030 /* 2031 * ParseMaybeSubMake -- 2032 * Scan the command string to see if it a possible submake node 2033 * Input: 2034 * cmd the command to scan 2035 * Results: 2036 * TRUE if the command is possibly a submake, FALSE if not. 2037 */ 2038 static Boolean 2039 ParseMaybeSubMake(const char *cmd) 2040 { 2041 size_t i; 2042 static struct { 2043 const char *name; 2044 size_t len; 2045 } vals[] = { 2046 #define MKV(A) { A, sizeof(A) - 1 } 2047 MKV("${MAKE}"), 2048 MKV("${.MAKE}"), 2049 MKV("$(MAKE)"), 2050 MKV("$(.MAKE)"), 2051 MKV("make"), 2052 }; 2053 for (i = 0; i < sizeof(vals)/sizeof(vals[0]); i++) { 2054 char *ptr; 2055 if ((ptr = strstr(cmd, vals[i].name)) == NULL) 2056 continue; 2057 if ((ptr == cmd || !isalnum((unsigned char)ptr[-1])) 2058 && !isalnum((unsigned char)ptr[vals[i].len])) 2059 return TRUE; 2060 } 2061 return FALSE; 2062 } 2063 2064 /*- 2065 * ParseAddCmd -- 2066 * Lst_ForEach function to add a command line to all targets 2067 * 2068 * Input: 2069 * gnp the node to which the command is to be added 2070 * cmd the command to add 2071 * 2072 * Results: 2073 * Always 0 2074 * 2075 * Side Effects: 2076 * A new element is added to the commands list of the node, 2077 * and the node can be marked as a submake node if the command is 2078 * determined to be that. 2079 */ 2080 static int 2081 ParseAddCmd(void *gnp, void *cmd) 2082 { 2083 GNode *gn = (GNode *)gnp; 2084 2085 /* Add to last (ie current) cohort for :: targets */ 2086 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 2087 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 2088 2089 /* if target already supplied, ignore commands */ 2090 if (!(gn->type & OP_HAS_COMMANDS)) { 2091 (void)Lst_AtEnd(gn->commands, cmd); 2092 if (ParseMaybeSubMake(cmd)) 2093 gn->type |= OP_SUBMAKE; 2094 ParseMark(gn); 2095 } else { 2096 #ifdef notyet 2097 /* XXX: We cannot do this until we fix the tree */ 2098 (void)Lst_AtEnd(gn->commands, cmd); 2099 Parse_Error(PARSE_WARNING, 2100 "overriding commands for target \"%s\"; " 2101 "previous commands defined at %s: %d ignored", 2102 gn->name, gn->fname, gn->lineno); 2103 #else 2104 Parse_Error(PARSE_WARNING, 2105 "duplicate script for target \"%s\" ignored", 2106 gn->name); 2107 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 2108 "using previous script for \"%s\" defined here", 2109 gn->name); 2110 #endif 2111 } 2112 return 0; 2113 } 2114 2115 /*- 2116 *----------------------------------------------------------------------- 2117 * ParseHasCommands -- 2118 * Callback procedure for Parse_File when destroying the list of 2119 * targets on the last dependency line. Marks a target as already 2120 * having commands if it does, to keep from having shell commands 2121 * on multiple dependency lines. 2122 * 2123 * Input: 2124 * gnp Node to examine 2125 * 2126 * Results: 2127 * None 2128 * 2129 * Side Effects: 2130 * OP_HAS_COMMANDS may be set for the target. 2131 * 2132 *----------------------------------------------------------------------- 2133 */ 2134 static void 2135 ParseHasCommands(void *gnp) 2136 { 2137 GNode *gn = (GNode *)gnp; 2138 if (!Lst_IsEmpty(gn->commands)) { 2139 gn->type |= OP_HAS_COMMANDS; 2140 } 2141 } 2142 2143 /*- 2144 *----------------------------------------------------------------------- 2145 * Parse_AddIncludeDir -- 2146 * Add a directory to the path searched for included makefiles 2147 * bracketed by double-quotes. Used by functions in main.c 2148 * 2149 * Input: 2150 * dir The name of the directory to add 2151 * 2152 * Results: 2153 * None. 2154 * 2155 * Side Effects: 2156 * The directory is appended to the list. 2157 * 2158 *----------------------------------------------------------------------- 2159 */ 2160 void 2161 Parse_AddIncludeDir(char *dir) 2162 { 2163 (void)Dir_AddDir(parseIncPath, dir); 2164 } 2165 2166 /*- 2167 *--------------------------------------------------------------------- 2168 * ParseDoInclude -- 2169 * Push to another file. 2170 * 2171 * The input is the line minus the `.'. A file spec is a string 2172 * enclosed in <> or "". The former is looked for only in sysIncPath. 2173 * The latter in . and the directories specified by -I command line 2174 * options 2175 * 2176 * Results: 2177 * None 2178 * 2179 * Side Effects: 2180 * A structure is added to the includes Lst and readProc, lineno, 2181 * fname and curFILE are altered for the new file 2182 *--------------------------------------------------------------------- 2183 */ 2184 2185 static void 2186 Parse_include_file(char *file, Boolean isSystem, Boolean depinc, int silent) 2187 { 2188 struct loadedfile *lf; 2189 char *fullname; /* full pathname of file */ 2190 char *newName; 2191 char *prefEnd, *incdir; 2192 int fd; 2193 int i; 2194 2195 /* 2196 * Now we know the file's name and its search path, we attempt to 2197 * find the durn thing. A return of NULL indicates the file don't 2198 * exist. 2199 */ 2200 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2201 2202 if (fullname == NULL && !isSystem) { 2203 /* 2204 * Include files contained in double-quotes are first searched for 2205 * relative to the including file's location. We don't want to 2206 * cd there, of course, so we just tack on the old file's 2207 * leading path components and call Dir_FindFile to see if 2208 * we can locate the beast. 2209 */ 2210 2211 incdir = bmake_strdup(curFile->fname); 2212 prefEnd = strrchr(incdir, '/'); 2213 if (prefEnd != NULL) { 2214 *prefEnd = '\0'; 2215 /* Now do lexical processing of leading "../" on the filename */ 2216 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2217 prefEnd = strrchr(incdir + 1, '/'); 2218 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2219 break; 2220 *prefEnd = '\0'; 2221 } 2222 newName = str_concat3(incdir, "/", file + i); 2223 fullname = Dir_FindFile(newName, parseIncPath); 2224 if (fullname == NULL) 2225 fullname = Dir_FindFile(newName, dirSearchPath); 2226 free(newName); 2227 } 2228 free(incdir); 2229 2230 if (fullname == NULL) { 2231 /* 2232 * Makefile wasn't found in same directory as included makefile. 2233 * Search for it first on the -I search path, 2234 * then on the .PATH search path, if not found in a -I directory. 2235 * If we have a suffix specific path we should use that. 2236 */ 2237 char *suff; 2238 Lst suffPath = NULL; 2239 2240 if ((suff = strrchr(file, '.'))) { 2241 suffPath = Suff_GetPath(suff); 2242 if (suffPath != NULL) { 2243 fullname = Dir_FindFile(file, suffPath); 2244 } 2245 } 2246 if (fullname == NULL) { 2247 fullname = Dir_FindFile(file, parseIncPath); 2248 if (fullname == NULL) { 2249 fullname = Dir_FindFile(file, dirSearchPath); 2250 } 2251 } 2252 } 2253 } 2254 2255 /* Looking for a system file or file still not found */ 2256 if (fullname == NULL) { 2257 /* 2258 * Look for it on the system path 2259 */ 2260 fullname = Dir_FindFile(file, 2261 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2262 } 2263 2264 if (fullname == NULL) { 2265 if (!silent) 2266 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2267 return; 2268 } 2269 2270 /* Actually open the file... */ 2271 fd = open(fullname, O_RDONLY); 2272 if (fd == -1) { 2273 if (!silent) 2274 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2275 free(fullname); 2276 return; 2277 } 2278 2279 /* load it */ 2280 lf = loadfile(fullname, fd); 2281 2282 ParseSetIncludedFile(); 2283 /* Start reading from this file next */ 2284 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2285 curFile->lf = lf; 2286 if (depinc) 2287 doing_depend = depinc; /* only turn it on */ 2288 } 2289 2290 static void 2291 ParseDoInclude(char *line) 2292 { 2293 char endc; /* the character which ends the file spec */ 2294 char *cp; /* current position in file spec */ 2295 int silent = *line != 'i'; 2296 char *file = &line[7 + silent]; 2297 2298 /* Skip to delimiter character so we know where to look */ 2299 while (*file == ' ' || *file == '\t') 2300 file++; 2301 2302 if (*file != '"' && *file != '<') { 2303 Parse_Error(PARSE_FATAL, 2304 ".include filename must be delimited by '\"' or '<'"); 2305 return; 2306 } 2307 2308 /* 2309 * Set the search path on which to find the include file based on the 2310 * characters which bracket its name. Angle-brackets imply it's 2311 * a system Makefile while double-quotes imply it's a user makefile 2312 */ 2313 if (*file == '<') { 2314 endc = '>'; 2315 } else { 2316 endc = '"'; 2317 } 2318 2319 /* Skip to matching delimiter */ 2320 for (cp = ++file; *cp && *cp != endc; cp++) 2321 continue; 2322 2323 if (*cp != endc) { 2324 Parse_Error(PARSE_FATAL, 2325 "Unclosed %cinclude filename. '%c' expected", 2326 '.', endc); 2327 return; 2328 } 2329 *cp = '\0'; 2330 2331 /* 2332 * Substitute for any variables in the file name before trying to 2333 * find the thing. 2334 */ 2335 file = Var_Subst(file, VAR_CMD, VARE_WANTRES); 2336 2337 Parse_include_file(file, endc == '>', *line == 'd', silent); 2338 free(file); 2339 } 2340 2341 2342 /*- 2343 *--------------------------------------------------------------------- 2344 * ParseSetIncludedFile -- 2345 * Set the .INCLUDEDFROMFILE variable to the contents of .PARSEFILE 2346 * and the .INCLUDEDFROMDIR variable to the contents of .PARSEDIR 2347 * 2348 * Results: 2349 * None 2350 * 2351 * Side Effects: 2352 * The .INCLUDEDFROMFILE variable is overwritten by the contents 2353 * of .PARSEFILE and the .INCLUDEDFROMDIR variable is overwriten 2354 * by the contents of .PARSEDIR 2355 *--------------------------------------------------------------------- 2356 */ 2357 static void 2358 ParseSetIncludedFile(void) 2359 { 2360 const char *pf, *pd; 2361 char *pf_freeIt, *pd_freeIt; 2362 2363 pf = Var_Value(".PARSEFILE", VAR_GLOBAL, &pf_freeIt); 2364 Var_Set(".INCLUDEDFROMFILE", pf, VAR_GLOBAL); 2365 pd = Var_Value(".PARSEDIR", VAR_GLOBAL, &pd_freeIt); 2366 Var_Set(".INCLUDEDFROMDIR", pd, VAR_GLOBAL); 2367 2368 if (DEBUG(PARSE)) 2369 fprintf(debug_file, "%s: ${.INCLUDEDFROMDIR} = `%s' " 2370 "${.INCLUDEDFROMFILE} = `%s'\n", __func__, pd, pf); 2371 2372 bmake_free(pf_freeIt); 2373 bmake_free(pd_freeIt); 2374 } 2375 /*- 2376 *--------------------------------------------------------------------- 2377 * ParseSetParseFile -- 2378 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2379 * basename of the given filename 2380 * 2381 * Results: 2382 * None 2383 * 2384 * Side Effects: 2385 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2386 * dirname and basename of the given filename. 2387 *--------------------------------------------------------------------- 2388 */ 2389 static void 2390 ParseSetParseFile(const char *filename) 2391 { 2392 char *slash, *dirname; 2393 const char *pd, *pf; 2394 int len; 2395 2396 slash = strrchr(filename, '/'); 2397 if (slash == NULL) { 2398 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL); 2399 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL); 2400 dirname= NULL; 2401 } else { 2402 len = slash - filename; 2403 dirname = bmake_malloc(len + 1); 2404 memcpy(dirname, filename, len); 2405 dirname[len] = '\0'; 2406 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL); 2407 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL); 2408 } 2409 if (DEBUG(PARSE)) 2410 fprintf(debug_file, "%s: ${.PARSEDIR} = `%s' ${.PARSEFILE} = `%s'\n", 2411 __func__, pd, pf); 2412 free(dirname); 2413 } 2414 2415 /* 2416 * Track the makefiles we read - so makefiles can 2417 * set dependencies on them. 2418 * Avoid adding anything more than once. 2419 */ 2420 2421 static void 2422 ParseTrackInput(const char *name) 2423 { 2424 char *fp = NULL; 2425 2426 const char *old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2427 if (old) { 2428 size_t name_len = strlen(name); 2429 const char *ep = old + strlen(old) - name_len; 2430 /* does it contain name? */ 2431 for (; old != NULL; old = strchr(old, ' ')) { 2432 if (*old == ' ') 2433 old++; 2434 if (old >= ep) 2435 break; /* cannot contain name */ 2436 if (memcmp(old, name, name_len) == 0 2437 && (old[name_len] == 0 || old[name_len] == ' ')) 2438 goto cleanup; 2439 } 2440 } 2441 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2442 cleanup: 2443 bmake_free(fp); 2444 } 2445 2446 2447 /*- 2448 *--------------------------------------------------------------------- 2449 * Parse_setInput -- 2450 * Start Parsing from the given source 2451 * 2452 * Results: 2453 * None 2454 * 2455 * Side Effects: 2456 * A structure is added to the includes Lst and readProc, lineno, 2457 * fname and curFile are altered for the new file 2458 *--------------------------------------------------------------------- 2459 */ 2460 void 2461 Parse_SetInput(const char *name, int line, int fd, 2462 char *(*nextbuf)(void *, size_t *), void *arg) 2463 { 2464 char *buf; 2465 size_t len; 2466 2467 if (name == NULL) 2468 name = curFile->fname; 2469 else 2470 ParseTrackInput(name); 2471 2472 if (DEBUG(PARSE)) 2473 fprintf(debug_file, "%s: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2474 __func__, name, line, fd, nextbuf, arg); 2475 2476 if (fd == -1 && nextbuf == NULL) 2477 /* sanity */ 2478 return; 2479 2480 if (curFile != NULL) 2481 /* Save exiting file info */ 2482 Lst_AtFront(includes, curFile); 2483 2484 /* Allocate and fill in new structure */ 2485 curFile = bmake_malloc(sizeof *curFile); 2486 2487 /* 2488 * Once the previous state has been saved, we can get down to reading 2489 * the new file. We set up the name of the file to be the absolute 2490 * name of the include file so error messages refer to the right 2491 * place. 2492 */ 2493 curFile->fname = bmake_strdup(name); 2494 curFile->lineno = line; 2495 curFile->first_lineno = line; 2496 curFile->nextbuf = nextbuf; 2497 curFile->nextbuf_arg = arg; 2498 curFile->lf = NULL; 2499 curFile->depending = doing_depend; /* restore this on EOF */ 2500 2501 assert(nextbuf != NULL); 2502 2503 /* Get first block of input data */ 2504 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2505 if (buf == NULL) { 2506 /* Was all a waste of time ... */ 2507 if (curFile->fname) 2508 free(curFile->fname); 2509 free(curFile); 2510 return; 2511 } 2512 curFile->P_str = buf; 2513 curFile->P_ptr = buf; 2514 curFile->P_end = buf+len; 2515 2516 curFile->cond_depth = Cond_save_depth(); 2517 ParseSetParseFile(name); 2518 } 2519 2520 /*- 2521 *----------------------------------------------------------------------- 2522 * IsInclude -- 2523 * Check if the line is an include directive 2524 * 2525 * Results: 2526 * TRUE if it is. 2527 * 2528 * Side Effects: 2529 * None 2530 * 2531 *----------------------------------------------------------------------- 2532 */ 2533 static Boolean 2534 IsInclude(const char *line, Boolean sysv) 2535 { 2536 static const char inc[] = "include"; 2537 static const size_t inclen = sizeof(inc) - 1; 2538 2539 /* 'd' is not valid for sysv */ 2540 int o = strchr(&("ds-"[sysv]), *line) != NULL; 2541 2542 if (strncmp(line + o, inc, inclen) != 0) 2543 return FALSE; 2544 2545 /* Space is not mandatory for BSD .include */ 2546 return !sysv || isspace((unsigned char)line[inclen + o]); 2547 } 2548 2549 2550 #ifdef SYSVINCLUDE 2551 /*- 2552 *----------------------------------------------------------------------- 2553 * IsSysVInclude -- 2554 * Check if the line is a SYSV include directive 2555 * 2556 * Results: 2557 * TRUE if it is. 2558 * 2559 * Side Effects: 2560 * None 2561 * 2562 *----------------------------------------------------------------------- 2563 */ 2564 static Boolean 2565 IsSysVInclude(const char *line) 2566 { 2567 const char *p; 2568 2569 if (!IsInclude(line, TRUE)) 2570 return FALSE; 2571 2572 /* Avoid interpeting a dependency line as an include */ 2573 for (p = line; (p = strchr(p, ':')) != NULL;) { 2574 if (*++p == '\0') { 2575 /* end of line -> dependency */ 2576 return FALSE; 2577 } 2578 if (*p == ':' || isspace((unsigned char)*p)) { 2579 /* :: operator or ': ' -> dependency */ 2580 return FALSE; 2581 } 2582 } 2583 return TRUE; 2584 } 2585 2586 /*- 2587 *--------------------------------------------------------------------- 2588 * ParseTraditionalInclude -- 2589 * Push to another file. 2590 * 2591 * The input is the current line. The file name(s) are 2592 * following the "include". 2593 * 2594 * Results: 2595 * None 2596 * 2597 * Side Effects: 2598 * A structure is added to the includes Lst and readProc, lineno, 2599 * fname and curFILE are altered for the new file 2600 *--------------------------------------------------------------------- 2601 */ 2602 static void 2603 ParseTraditionalInclude(char *line) 2604 { 2605 char *cp; /* current position in file spec */ 2606 int done = 0; 2607 int silent = line[0] != 'i'; 2608 char *file = &line[silent + 7]; 2609 char *all_files; 2610 2611 if (DEBUG(PARSE)) { 2612 fprintf(debug_file, "%s: %s\n", __func__, file); 2613 } 2614 2615 /* 2616 * Skip over whitespace 2617 */ 2618 while (isspace((unsigned char)*file)) 2619 file++; 2620 2621 /* 2622 * Substitute for any variables in the file name before trying to 2623 * find the thing. 2624 */ 2625 all_files = Var_Subst(file, VAR_CMD, VARE_WANTRES); 2626 2627 if (*file == '\0') { 2628 Parse_Error(PARSE_FATAL, 2629 "Filename missing from \"include\""); 2630 goto out; 2631 } 2632 2633 for (file = all_files; !done; file = cp + 1) { 2634 /* Skip to end of line or next whitespace */ 2635 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2636 continue; 2637 2638 if (*cp) 2639 *cp = '\0'; 2640 else 2641 done = 1; 2642 2643 Parse_include_file(file, FALSE, FALSE, silent); 2644 } 2645 out: 2646 free(all_files); 2647 } 2648 #endif 2649 2650 #ifdef GMAKEEXPORT 2651 /*- 2652 *--------------------------------------------------------------------- 2653 * ParseGmakeExport -- 2654 * Parse export <variable>=<value> 2655 * 2656 * And set the environment with it. 2657 * 2658 * Results: 2659 * None 2660 * 2661 * Side Effects: 2662 * None 2663 *--------------------------------------------------------------------- 2664 */ 2665 static void 2666 ParseGmakeExport(char *line) 2667 { 2668 char *variable = &line[6]; 2669 char *value; 2670 2671 if (DEBUG(PARSE)) { 2672 fprintf(debug_file, "%s: %s\n", __func__, variable); 2673 } 2674 2675 /* 2676 * Skip over whitespace 2677 */ 2678 while (isspace((unsigned char)*variable)) 2679 variable++; 2680 2681 for (value = variable; *value && *value != '='; value++) 2682 continue; 2683 2684 if (*value != '=') { 2685 Parse_Error(PARSE_FATAL, 2686 "Variable/Value missing from \"export\""); 2687 return; 2688 } 2689 *value++ = '\0'; /* terminate variable */ 2690 2691 /* 2692 * Expand the value before putting it in the environment. 2693 */ 2694 value = Var_Subst(value, VAR_CMD, VARE_WANTRES); 2695 setenv(variable, value, 1); 2696 free(value); 2697 } 2698 #endif 2699 2700 /*- 2701 *--------------------------------------------------------------------- 2702 * ParseEOF -- 2703 * Called when EOF is reached in the current file. If we were reading 2704 * an include file, the includes stack is popped and things set up 2705 * to go back to reading the previous file at the previous location. 2706 * 2707 * Results: 2708 * CONTINUE if there's more to do. DONE if not. 2709 * 2710 * Side Effects: 2711 * The old curFILE, is closed. The includes list is shortened. 2712 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2713 *--------------------------------------------------------------------- 2714 */ 2715 static int 2716 ParseEOF(void) 2717 { 2718 char *ptr; 2719 size_t len; 2720 2721 assert(curFile->nextbuf != NULL); 2722 2723 doing_depend = curFile->depending; /* restore this */ 2724 /* get next input buffer, if any */ 2725 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2726 curFile->P_ptr = ptr; 2727 curFile->P_str = ptr; 2728 curFile->P_end = ptr + len; 2729 curFile->lineno = curFile->first_lineno; 2730 if (ptr != NULL) { 2731 /* Iterate again */ 2732 return CONTINUE; 2733 } 2734 2735 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2736 Cond_restore_depth(curFile->cond_depth); 2737 2738 if (curFile->lf != NULL) { 2739 loadedfile_destroy(curFile->lf); 2740 curFile->lf = NULL; 2741 } 2742 2743 /* Dispose of curFile info */ 2744 /* Leak curFile->fname because all the gnodes have pointers to it */ 2745 free(curFile->P_str); 2746 free(curFile); 2747 2748 curFile = Lst_DeQueue(includes); 2749 2750 if (curFile == NULL) { 2751 /* We've run out of input */ 2752 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2753 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2754 Var_Delete(".INCLUDEDFROMDIR", VAR_GLOBAL); 2755 Var_Delete(".INCLUDEDFROMFILE", VAR_GLOBAL); 2756 return DONE; 2757 } 2758 2759 if (DEBUG(PARSE)) 2760 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2761 curFile->fname, curFile->lineno); 2762 2763 /* Restore the PARSEDIR/PARSEFILE variables */ 2764 ParseSetParseFile(curFile->fname); 2765 return CONTINUE; 2766 } 2767 2768 #define PARSE_RAW 1 2769 #define PARSE_SKIP 2 2770 2771 static char * 2772 ParseGetLine(int flags, int *length) 2773 { 2774 IFile *cf = curFile; 2775 char *ptr; 2776 char ch; 2777 char *line; 2778 char *line_end; 2779 char *escaped; 2780 char *comment; 2781 char *tp; 2782 2783 /* Loop through blank lines and comment lines */ 2784 for (;;) { 2785 cf->lineno++; 2786 line = cf->P_ptr; 2787 ptr = line; 2788 line_end = line; 2789 escaped = NULL; 2790 comment = NULL; 2791 for (;;) { 2792 if (cf->P_end != NULL && ptr == cf->P_end) { 2793 /* end of buffer */ 2794 ch = 0; 2795 break; 2796 } 2797 ch = *ptr; 2798 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2799 if (cf->P_end == NULL) 2800 /* End of string (aka for loop) data */ 2801 break; 2802 /* see if there is more we can parse */ 2803 while (ptr++ < cf->P_end) { 2804 if ((ch = *ptr) == '\n') { 2805 if (ptr > line && ptr[-1] == '\\') 2806 continue; 2807 Parse_Error(PARSE_WARNING, 2808 "Zero byte read from file, skipping rest of line."); 2809 break; 2810 } 2811 } 2812 if (cf->nextbuf != NULL) { 2813 /* 2814 * End of this buffer; return EOF and outer logic 2815 * will get the next one. (eww) 2816 */ 2817 break; 2818 } 2819 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2820 return NULL; 2821 } 2822 2823 if (ch == '\\') { 2824 /* Don't treat next character as special, remember first one */ 2825 if (escaped == NULL) 2826 escaped = ptr; 2827 if (ptr[1] == '\n') 2828 cf->lineno++; 2829 ptr += 2; 2830 line_end = ptr; 2831 continue; 2832 } 2833 if (ch == '#' && comment == NULL) { 2834 /* Remember first '#' for comment stripping */ 2835 /* Unless previous char was '[', as in modifier :[#] */ 2836 if (!(ptr > line && ptr[-1] == '[')) 2837 comment = line_end; 2838 } 2839 ptr++; 2840 if (ch == '\n') 2841 break; 2842 if (!isspace((unsigned char)ch)) 2843 /* We are not interested in trailing whitespace */ 2844 line_end = ptr; 2845 } 2846 2847 /* Save next 'to be processed' location */ 2848 cf->P_ptr = ptr; 2849 2850 /* Check we have a non-comment, non-blank line */ 2851 if (line_end == line || comment == line) { 2852 if (ch == 0) 2853 /* At end of file */ 2854 return NULL; 2855 /* Parse another line */ 2856 continue; 2857 } 2858 2859 /* We now have a line of data */ 2860 *line_end = 0; 2861 2862 if (flags & PARSE_RAW) { 2863 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2864 *length = line_end - line; 2865 return line; 2866 } 2867 2868 if (flags & PARSE_SKIP) { 2869 /* Completely ignore non-directives */ 2870 if (line[0] != '.') 2871 continue; 2872 /* We could do more of the .else/.elif/.endif checks here */ 2873 } 2874 break; 2875 } 2876 2877 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2878 if (comment != NULL && line[0] != '\t') { 2879 line_end = comment; 2880 *line_end = 0; 2881 } 2882 2883 /* If we didn't see a '\\' then the in-situ data is fine */ 2884 if (escaped == NULL) { 2885 *length = line_end - line; 2886 return line; 2887 } 2888 2889 /* Remove escapes from '\n' and '#' */ 2890 tp = ptr = escaped; 2891 escaped = line; 2892 for (; ; *tp++ = ch) { 2893 ch = *ptr++; 2894 if (ch != '\\') { 2895 if (ch == 0) 2896 break; 2897 continue; 2898 } 2899 2900 ch = *ptr++; 2901 if (ch == 0) { 2902 /* Delete '\\' at end of buffer */ 2903 tp--; 2904 break; 2905 } 2906 2907 if (ch == '#' && line[0] != '\t') 2908 /* Delete '\\' from before '#' on non-command lines */ 2909 continue; 2910 2911 if (ch != '\n') { 2912 /* Leave '\\' in buffer for later */ 2913 *tp++ = '\\'; 2914 /* Make sure we don't delete an escaped ' ' from the line end */ 2915 escaped = tp + 1; 2916 continue; 2917 } 2918 2919 /* Escaped '\n' replace following whitespace with a single ' ' */ 2920 while (ptr[0] == ' ' || ptr[0] == '\t') 2921 ptr++; 2922 ch = ' '; 2923 } 2924 2925 /* Delete any trailing spaces - eg from empty continuations */ 2926 while (tp > escaped && isspace((unsigned char)tp[-1])) 2927 tp--; 2928 2929 *tp = 0; 2930 *length = tp - line; 2931 return line; 2932 } 2933 2934 /*- 2935 *--------------------------------------------------------------------- 2936 * ParseReadLine -- 2937 * Read an entire line from the input file. Called only by Parse_File. 2938 * 2939 * Results: 2940 * A line w/o its newline 2941 * 2942 * Side Effects: 2943 * Only those associated with reading a character 2944 *--------------------------------------------------------------------- 2945 */ 2946 static char * 2947 ParseReadLine(void) 2948 { 2949 char *line; /* Result */ 2950 int lineLength; /* Length of result */ 2951 int lineno; /* Saved line # */ 2952 int rval; 2953 2954 for (;;) { 2955 line = ParseGetLine(0, &lineLength); 2956 if (line == NULL) 2957 return NULL; 2958 2959 if (line[0] != '.') 2960 return line; 2961 2962 /* 2963 * The line might be a conditional. Ask the conditional module 2964 * about it and act accordingly 2965 */ 2966 switch (Cond_Eval(line)) { 2967 case COND_SKIP: 2968 /* Skip to next conditional that evaluates to COND_PARSE. */ 2969 do { 2970 line = ParseGetLine(PARSE_SKIP, &lineLength); 2971 } while (line && Cond_Eval(line) != COND_PARSE); 2972 if (line == NULL) 2973 break; 2974 continue; 2975 case COND_PARSE: 2976 continue; 2977 case COND_INVALID: /* Not a conditional line */ 2978 /* Check for .for loops */ 2979 rval = For_Eval(line); 2980 if (rval == 0) 2981 /* Not a .for line */ 2982 break; 2983 if (rval < 0) 2984 /* Syntax error - error printed, ignore line */ 2985 continue; 2986 /* Start of a .for loop */ 2987 lineno = curFile->lineno; 2988 /* Accumulate loop lines until matching .endfor */ 2989 do { 2990 line = ParseGetLine(PARSE_RAW, &lineLength); 2991 if (line == NULL) { 2992 Parse_Error(PARSE_FATAL, 2993 "Unexpected end of file in for loop."); 2994 break; 2995 } 2996 } while (For_Accum(line)); 2997 /* Stash each iteration as a new 'input file' */ 2998 For_Run(lineno); 2999 /* Read next line from for-loop buffer */ 3000 continue; 3001 } 3002 return line; 3003 } 3004 } 3005 3006 /*- 3007 *----------------------------------------------------------------------- 3008 * ParseFinishLine -- 3009 * Handle the end of a dependency group. 3010 * 3011 * Results: 3012 * Nothing. 3013 * 3014 * Side Effects: 3015 * inLine set FALSE. 'targets' list destroyed. 3016 * 3017 *----------------------------------------------------------------------- 3018 */ 3019 static void 3020 ParseFinishLine(void) 3021 { 3022 if (inLine) { 3023 Lst_ForEach(targets, Suff_EndTransform, NULL); 3024 Lst_Destroy(targets, ParseHasCommands); 3025 targets = NULL; 3026 inLine = FALSE; 3027 } 3028 } 3029 3030 3031 /*- 3032 *--------------------------------------------------------------------- 3033 * Parse_File -- 3034 * Parse a file into its component parts, incorporating it into the 3035 * current dependency graph. This is the main function and controls 3036 * almost every other function in this module 3037 * 3038 * Input: 3039 * name the name of the file being read 3040 * fd Open file to makefile to parse 3041 * 3042 * Results: 3043 * None 3044 * 3045 * Side Effects: 3046 * closes fd. 3047 * Loads. Nodes are added to the list of all targets, nodes and links 3048 * are added to the dependency graph. etc. etc. etc. 3049 *--------------------------------------------------------------------- 3050 */ 3051 void 3052 Parse_File(const char *name, int fd) 3053 { 3054 char *cp; /* pointer into the line */ 3055 char *line; /* the line we're working on */ 3056 struct loadedfile *lf; 3057 3058 lf = loadfile(name, fd); 3059 3060 inLine = FALSE; 3061 fatals = 0; 3062 3063 if (name == NULL) 3064 name = "(stdin)"; 3065 3066 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 3067 curFile->lf = lf; 3068 3069 do { 3070 for (; (line = ParseReadLine()) != NULL; ) { 3071 if (DEBUG(PARSE)) 3072 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 3073 curFile->lineno, line); 3074 if (*line == '.') { 3075 /* 3076 * Lines that begin with the special character may be 3077 * include or undef directives. 3078 * On the other hand they can be suffix rules (.c.o: ...) 3079 * or just dependencies for filenames that start '.'. 3080 */ 3081 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 3082 continue; 3083 } 3084 if (IsInclude(cp, FALSE)) { 3085 ParseDoInclude(cp); 3086 continue; 3087 } 3088 if (strncmp(cp, "undef", 5) == 0) { 3089 char *cp2; 3090 for (cp += 5; isspace((unsigned char) *cp); cp++) 3091 continue; 3092 for (cp2 = cp; !isspace((unsigned char) *cp2) && 3093 *cp2 != '\0'; cp2++) 3094 continue; 3095 *cp2 = '\0'; 3096 Var_Delete(cp, VAR_GLOBAL); 3097 continue; 3098 } else if (strncmp(cp, "export", 6) == 0) { 3099 for (cp += 6; isspace((unsigned char) *cp); cp++) 3100 continue; 3101 Var_Export(cp, TRUE); 3102 continue; 3103 } else if (strncmp(cp, "unexport", 8) == 0) { 3104 Var_UnExport(cp); 3105 continue; 3106 } else if (strncmp(cp, "info", 4) == 0 || 3107 strncmp(cp, "error", 5) == 0 || 3108 strncmp(cp, "warning", 7) == 0) { 3109 if (ParseMessage(cp)) 3110 continue; 3111 } 3112 } 3113 3114 if (*line == '\t') { 3115 /* 3116 * If a line starts with a tab, it can only hope to be 3117 * a creation command. 3118 */ 3119 cp = line + 1; 3120 shellCommand: 3121 for (; isspace ((unsigned char)*cp); cp++) { 3122 continue; 3123 } 3124 if (*cp) { 3125 if (!inLine) 3126 Parse_Error(PARSE_FATAL, 3127 "Unassociated shell command \"%s\"", 3128 cp); 3129 /* 3130 * So long as it's not a blank line and we're actually 3131 * in a dependency spec, add the command to the list of 3132 * commands of all targets in the dependency spec 3133 */ 3134 if (targets) { 3135 cp = bmake_strdup(cp); 3136 Lst_ForEach(targets, ParseAddCmd, cp); 3137 #ifdef CLEANUP 3138 Lst_AtEnd(targCmds, cp); 3139 #endif 3140 } 3141 } 3142 continue; 3143 } 3144 3145 #ifdef SYSVINCLUDE 3146 if (IsSysVInclude(line)) { 3147 /* 3148 * It's an S3/S5-style "include". 3149 */ 3150 ParseTraditionalInclude(line); 3151 continue; 3152 } 3153 #endif 3154 #ifdef GMAKEEXPORT 3155 if (strncmp(line, "export", 6) == 0 && 3156 isspace((unsigned char) line[6]) && 3157 strchr(line, ':') == NULL) { 3158 /* 3159 * It's a Gmake "export". 3160 */ 3161 ParseGmakeExport(line); 3162 continue; 3163 } 3164 #endif 3165 if (Parse_IsVar(line)) { 3166 ParseFinishLine(); 3167 Parse_DoVar(line, VAR_GLOBAL); 3168 continue; 3169 } 3170 3171 #ifndef POSIX 3172 /* 3173 * To make life easier on novices, if the line is indented we 3174 * first make sure the line has a dependency operator in it. 3175 * If it doesn't have an operator and we're in a dependency 3176 * line's script, we assume it's actually a shell command 3177 * and add it to the current list of targets. 3178 */ 3179 cp = line; 3180 if (isspace((unsigned char) line[0])) { 3181 while (isspace((unsigned char) *cp)) 3182 cp++; 3183 while (*cp && (ParseIsEscaped(line, cp) || 3184 *cp != ':' && *cp != '!')) { 3185 cp++; 3186 } 3187 if (*cp == '\0') { 3188 if (inLine) { 3189 Parse_Error(PARSE_WARNING, 3190 "Shell command needs a leading tab"); 3191 goto shellCommand; 3192 } 3193 } 3194 } 3195 #endif 3196 ParseFinishLine(); 3197 3198 /* 3199 * For some reason - probably to make the parser impossible - 3200 * a ';' can be used to separate commands from dependencies. 3201 * Attempt to avoid ';' inside substitution patterns. 3202 */ 3203 { 3204 int level = 0; 3205 3206 for (cp = line; *cp != 0; cp++) { 3207 if (*cp == '\\' && cp[1] != 0) { 3208 cp++; 3209 continue; 3210 } 3211 if (*cp == '$' && 3212 (cp[1] == '(' || cp[1] == '{')) { 3213 level++; 3214 continue; 3215 } 3216 if (level > 0) { 3217 if (*cp == ')' || *cp == '}') { 3218 level--; 3219 continue; 3220 } 3221 } else if (*cp == ';') { 3222 break; 3223 } 3224 } 3225 } 3226 if (*cp != 0) 3227 /* Terminate the dependency list at the ';' */ 3228 *cp++ = 0; 3229 else 3230 cp = NULL; 3231 3232 /* 3233 * We now know it's a dependency line so it needs to have all 3234 * variables expanded before being parsed. Tell the variable 3235 * module to complain if some variable is undefined... 3236 */ 3237 line = Var_Subst(line, VAR_CMD, VARE_UNDEFERR|VARE_WANTRES); 3238 3239 /* 3240 * Need a non-circular list for the target nodes 3241 */ 3242 if (targets) 3243 Lst_Destroy(targets, NULL); 3244 3245 targets = Lst_Init(FALSE); 3246 inLine = TRUE; 3247 3248 ParseDoDependency(line); 3249 free(line); 3250 3251 /* If there were commands after a ';', add them now */ 3252 if (cp != NULL) { 3253 goto shellCommand; 3254 } 3255 } 3256 /* 3257 * Reached EOF, but it may be just EOF of an include file... 3258 */ 3259 } while (ParseEOF() == CONTINUE); 3260 3261 if (fatals) { 3262 (void)fflush(stdout); 3263 (void)fprintf(stderr, 3264 "%s: Fatal errors encountered -- cannot continue", 3265 progname); 3266 PrintOnError(NULL, NULL); 3267 exit(1); 3268 } 3269 } 3270 3271 /*- 3272 *--------------------------------------------------------------------- 3273 * Parse_Init -- 3274 * initialize the parsing module 3275 * 3276 * Results: 3277 * none 3278 * 3279 * Side Effects: 3280 * the parseIncPath list is initialized... 3281 *--------------------------------------------------------------------- 3282 */ 3283 void 3284 Parse_Init(void) 3285 { 3286 mainNode = NULL; 3287 parseIncPath = Lst_Init(FALSE); 3288 sysIncPath = Lst_Init(FALSE); 3289 defIncPath = Lst_Init(FALSE); 3290 includes = Lst_Init(FALSE); 3291 #ifdef CLEANUP 3292 targCmds = Lst_Init(FALSE); 3293 #endif 3294 } 3295 3296 void 3297 Parse_End(void) 3298 { 3299 #ifdef CLEANUP 3300 Lst_Destroy(targCmds, (FreeProc *)free); 3301 if (targets) 3302 Lst_Destroy(targets, NULL); 3303 Lst_Destroy(defIncPath, Dir_Destroy); 3304 Lst_Destroy(sysIncPath, Dir_Destroy); 3305 Lst_Destroy(parseIncPath, Dir_Destroy); 3306 Lst_Destroy(includes, NULL); /* Should be empty now */ 3307 #endif 3308 } 3309 3310 3311 /*- 3312 *----------------------------------------------------------------------- 3313 * Parse_MainName -- 3314 * Return a Lst of the main target to create for main()'s sake. If 3315 * no such target exists, we Punt with an obnoxious error message. 3316 * 3317 * Results: 3318 * A Lst of the single node to create. 3319 * 3320 * Side Effects: 3321 * None. 3322 * 3323 *----------------------------------------------------------------------- 3324 */ 3325 Lst 3326 Parse_MainName(void) 3327 { 3328 Lst mainList; /* result list */ 3329 3330 mainList = Lst_Init(FALSE); 3331 3332 if (mainNode == NULL) { 3333 Punt("no target to make."); 3334 /*NOTREACHED*/ 3335 } else if (mainNode->type & OP_DOUBLEDEP) { 3336 (void)Lst_AtEnd(mainList, mainNode); 3337 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3338 } 3339 else 3340 (void)Lst_AtEnd(mainList, mainNode); 3341 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3342 return mainList; 3343 } 3344 3345 /*- 3346 *----------------------------------------------------------------------- 3347 * ParseMark -- 3348 * Add the filename and lineno to the GNode so that we remember 3349 * where it was first defined. 3350 * 3351 * Side Effects: 3352 * None. 3353 * 3354 *----------------------------------------------------------------------- 3355 */ 3356 static void 3357 ParseMark(GNode *gn) 3358 { 3359 gn->fname = curFile->fname; 3360 gn->lineno = curFile->lineno; 3361 } 3362