1 /* $NetBSD: parse.c,v 1.225 2017/04/17 13:29:07 maya 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 1.225 2017/04/17 13:29:07 maya 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 1.225 2017/04/17 13:29:07 maya Exp $"); 80 #endif 81 #endif /* not lint */ 82 #endif 83 84 /*- 85 * parse.c -- 86 * Functions to parse a makefile. 87 * 88 * One function, Parse_Init, must be called before any functions 89 * in this module are used. After that, the function Parse_File is the 90 * main entry point and controls most of the other functions in this 91 * module. 92 * 93 * Most important structures are kept in Lsts. Directories for 94 * the .include "..." function are kept in the 'parseIncPath' Lst, while 95 * those for the .include <...> are kept in the 'sysIncPath' Lst. The 96 * targets currently being defined are kept in the 'targets' Lst. 97 * 98 * The variables 'fname' and 'lineno' are used to track the name 99 * of the current file and the line number in that file so that error 100 * messages can be more meaningful. 101 * 102 * Interface: 103 * Parse_Init Initialization function which must be 104 * called before anything else in this module 105 * is used. 106 * 107 * Parse_End Cleanup the module 108 * 109 * Parse_File Function used to parse a makefile. It must 110 * be given the name of the file, which should 111 * already have been opened, and a function 112 * to call to read a character from the file. 113 * 114 * Parse_IsVar Returns TRUE if the given line is a 115 * variable assignment. Used by MainParseArgs 116 * to determine if an argument is a target 117 * or a variable assignment. Used internally 118 * for pretty much the same thing... 119 * 120 * Parse_Error Function called when an error occurs in 121 * parsing. Used by the variable and 122 * conditional modules. 123 * Parse_MainName Returns a Lst of the main target to create. 124 */ 125 126 #include <sys/types.h> 127 #include <sys/stat.h> 128 #include <assert.h> 129 #include <ctype.h> 130 #include <errno.h> 131 #include <stdarg.h> 132 #include <stdio.h> 133 134 #include "make.h" 135 #include "hash.h" 136 #include "dir.h" 137 #include "job.h" 138 #include "buf.h" 139 #include "pathnames.h" 140 141 #ifdef HAVE_STDINT_H 142 #include <stdint.h> 143 #endif 144 145 #ifdef HAVE_MMAP 146 #include <sys/mman.h> 147 148 #ifndef MAP_COPY 149 #define MAP_COPY MAP_PRIVATE 150 #endif 151 #ifndef MAP_FILE 152 #define MAP_FILE 0 153 #endif 154 #endif 155 156 //////////////////////////////////////////////////////////// 157 // types and constants 158 159 /* 160 * Structure for a file being read ("included file") 161 */ 162 typedef struct IFile { 163 char *fname; /* name of file */ 164 int lineno; /* current line number in file */ 165 int first_lineno; /* line number of start of text */ 166 int cond_depth; /* 'if' nesting when file opened */ 167 Boolean depending; /* state of doing_depend on EOF */ 168 char *P_str; /* point to base of string buffer */ 169 char *P_ptr; /* point to next char of string buffer */ 170 char *P_end; /* point to the end of string buffer */ 171 char *(*nextbuf)(void *, size_t *); /* Function to get more data */ 172 void *nextbuf_arg; /* Opaque arg for nextbuf() */ 173 struct loadedfile *lf; /* loadedfile object, if any */ 174 } IFile; 175 176 177 /* 178 * These values are returned by ParseEOF to tell Parse_File whether to 179 * CONTINUE parsing, i.e. it had only reached the end of an include file, 180 * or if it's DONE. 181 */ 182 #define CONTINUE 1 183 #define DONE 0 184 185 /* 186 * Tokens for target attributes 187 */ 188 typedef enum { 189 Begin, /* .BEGIN */ 190 Default, /* .DEFAULT */ 191 DeleteOnError, /* .DELETE_ON_ERROR */ 192 End, /* .END */ 193 dotError, /* .ERROR */ 194 Ignore, /* .IGNORE */ 195 Includes, /* .INCLUDES */ 196 Interrupt, /* .INTERRUPT */ 197 Libs, /* .LIBS */ 198 Meta, /* .META */ 199 MFlags, /* .MFLAGS or .MAKEFLAGS */ 200 Main, /* .MAIN and we don't have anything user-specified to 201 * make */ 202 NoExport, /* .NOEXPORT */ 203 NoMeta, /* .NOMETA */ 204 NoMetaCmp, /* .NOMETA_CMP */ 205 NoPath, /* .NOPATH */ 206 Not, /* Not special */ 207 NotParallel, /* .NOTPARALLEL */ 208 Null, /* .NULL */ 209 ExObjdir, /* .OBJDIR */ 210 Order, /* .ORDER */ 211 Parallel, /* .PARALLEL */ 212 ExPath, /* .PATH */ 213 Phony, /* .PHONY */ 214 #ifdef POSIX 215 Posix, /* .POSIX */ 216 #endif 217 Precious, /* .PRECIOUS */ 218 ExShell, /* .SHELL */ 219 Silent, /* .SILENT */ 220 SingleShell, /* .SINGLESHELL */ 221 Stale, /* .STALE */ 222 Suffixes, /* .SUFFIXES */ 223 Wait, /* .WAIT */ 224 Attribute /* Generic attribute */ 225 } ParseSpecial; 226 227 /* 228 * Other tokens 229 */ 230 #define LPAREN '(' 231 #define RPAREN ')' 232 233 234 //////////////////////////////////////////////////////////// 235 // result data 236 237 /* 238 * The main target to create. This is the first target on the first 239 * dependency line in the first makefile. 240 */ 241 static GNode *mainNode; 242 243 //////////////////////////////////////////////////////////// 244 // eval state 245 246 /* targets we're working on */ 247 static Lst targets; 248 249 #ifdef CLEANUP 250 /* command lines for targets */ 251 static Lst targCmds; 252 #endif 253 254 /* 255 * specType contains the SPECial TYPE of the current target. It is 256 * Not if the target is unspecial. If it *is* special, however, the children 257 * are linked as children of the parent but not vice versa. This variable is 258 * set in ParseDoDependency 259 */ 260 static ParseSpecial specType; 261 262 /* 263 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER 264 * seen, then set to each successive source on the line. 265 */ 266 static GNode *predecessor; 267 268 //////////////////////////////////////////////////////////// 269 // parser state 270 271 /* true if currently in a dependency line or its commands */ 272 static Boolean inLine; 273 274 /* number of fatal errors */ 275 static int fatals = 0; 276 277 /* 278 * Variables for doing includes 279 */ 280 281 /* current file being read */ 282 static IFile *curFile; 283 284 /* stack of IFiles generated by .includes */ 285 static Lst includes; 286 287 /* include paths (lists of directories) */ 288 Lst parseIncPath; /* dirs for "..." includes */ 289 Lst sysIncPath; /* dirs for <...> includes */ 290 Lst defIncPath; /* default for sysIncPath */ 291 292 //////////////////////////////////////////////////////////// 293 // parser tables 294 295 /* 296 * The parseKeywords table is searched using binary search when deciding 297 * if a target or source is special. The 'spec' field is the ParseSpecial 298 * type of the keyword ("Not" if the keyword isn't special as a target) while 299 * the 'op' field is the operator to apply to the list of targets if the 300 * keyword is used as a source ("0" if the keyword isn't special as a source) 301 */ 302 static const struct { 303 const char *name; /* Name of keyword */ 304 ParseSpecial spec; /* Type when used as a target */ 305 int op; /* Operator when used as a source */ 306 } parseKeywords[] = { 307 { ".BEGIN", Begin, 0 }, 308 { ".DEFAULT", Default, 0 }, 309 { ".DELETE_ON_ERROR", DeleteOnError, 0 }, 310 { ".END", End, 0 }, 311 { ".ERROR", dotError, 0 }, 312 { ".EXEC", Attribute, OP_EXEC }, 313 { ".IGNORE", Ignore, OP_IGNORE }, 314 { ".INCLUDES", Includes, 0 }, 315 { ".INTERRUPT", Interrupt, 0 }, 316 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 317 { ".JOIN", Attribute, OP_JOIN }, 318 { ".LIBS", Libs, 0 }, 319 { ".MADE", Attribute, OP_MADE }, 320 { ".MAIN", Main, 0 }, 321 { ".MAKE", Attribute, OP_MAKE }, 322 { ".MAKEFLAGS", MFlags, 0 }, 323 { ".META", Meta, OP_META }, 324 { ".MFLAGS", MFlags, 0 }, 325 { ".NOMETA", NoMeta, OP_NOMETA }, 326 { ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP }, 327 { ".NOPATH", NoPath, OP_NOPATH }, 328 { ".NOTMAIN", Attribute, OP_NOTMAIN }, 329 { ".NOTPARALLEL", NotParallel, 0 }, 330 { ".NO_PARALLEL", NotParallel, 0 }, 331 { ".NULL", Null, 0 }, 332 { ".OBJDIR", ExObjdir, 0 }, 333 { ".OPTIONAL", Attribute, OP_OPTIONAL }, 334 { ".ORDER", Order, 0 }, 335 { ".PARALLEL", Parallel, 0 }, 336 { ".PATH", ExPath, 0 }, 337 { ".PHONY", Phony, OP_PHONY }, 338 #ifdef POSIX 339 { ".POSIX", Posix, 0 }, 340 #endif 341 { ".PRECIOUS", Precious, OP_PRECIOUS }, 342 { ".RECURSIVE", Attribute, OP_MAKE }, 343 { ".SHELL", ExShell, 0 }, 344 { ".SILENT", Silent, OP_SILENT }, 345 { ".SINGLESHELL", SingleShell, 0 }, 346 { ".STALE", Stale, 0 }, 347 { ".SUFFIXES", Suffixes, 0 }, 348 { ".USE", Attribute, OP_USE }, 349 { ".USEBEFORE", Attribute, OP_USEBEFORE }, 350 { ".WAIT", Wait, 0 }, 351 }; 352 353 //////////////////////////////////////////////////////////// 354 // local functions 355 356 static int ParseIsEscaped(const char *, const char *); 357 static void ParseErrorInternal(const char *, size_t, int, const char *, ...) 358 MAKE_ATTR_PRINTFLIKE(4,5); 359 static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list) 360 MAKE_ATTR_PRINTFLIKE(5, 0); 361 static int ParseFindKeyword(const char *); 362 static int ParseLinkSrc(void *, void *); 363 static int ParseDoOp(void *, void *); 364 static void ParseDoSrc(int, const char *); 365 static int ParseFindMain(void *, void *); 366 static int ParseAddDir(void *, void *); 367 static int ParseClearPath(void *, void *); 368 static void ParseDoDependency(char *); 369 static int ParseAddCmd(void *, void *); 370 static void ParseHasCommands(void *); 371 static void ParseDoInclude(char *); 372 static void ParseSetParseFile(const char *); 373 static void ParseSetIncludedFile(void); 374 #ifdef SYSVINCLUDE 375 static void ParseTraditionalInclude(char *); 376 #endif 377 #ifdef GMAKEEXPORT 378 static void ParseGmakeExport(char *); 379 #endif 380 static int ParseEOF(void); 381 static char *ParseReadLine(void); 382 static void ParseFinishLine(void); 383 static void ParseMark(GNode *); 384 385 //////////////////////////////////////////////////////////// 386 // file loader 387 388 struct loadedfile { 389 const char *path; /* name, for error reports */ 390 char *buf; /* contents buffer */ 391 size_t len; /* length of contents */ 392 size_t maplen; /* length of mmap area, or 0 */ 393 Boolean used; /* XXX: have we used the data yet */ 394 }; 395 396 /* 397 * Constructor/destructor for loadedfile 398 */ 399 static struct loadedfile * 400 loadedfile_create(const char *path) 401 { 402 struct loadedfile *lf; 403 404 lf = bmake_malloc(sizeof(*lf)); 405 lf->path = (path == NULL ? "(stdin)" : path); 406 lf->buf = NULL; 407 lf->len = 0; 408 lf->maplen = 0; 409 lf->used = FALSE; 410 return lf; 411 } 412 413 static void 414 loadedfile_destroy(struct loadedfile *lf) 415 { 416 if (lf->buf != NULL) { 417 if (lf->maplen > 0) { 418 #ifdef HAVE_MMAP 419 munmap(lf->buf, lf->maplen); 420 #endif 421 } else { 422 free(lf->buf); 423 } 424 } 425 free(lf); 426 } 427 428 /* 429 * nextbuf() operation for loadedfile, as needed by the weird and twisted 430 * logic below. Once that's cleaned up, we can get rid of lf->used... 431 */ 432 static char * 433 loadedfile_nextbuf(void *x, size_t *len) 434 { 435 struct loadedfile *lf = x; 436 437 if (lf->used) { 438 return NULL; 439 } 440 lf->used = TRUE; 441 *len = lf->len; 442 return lf->buf; 443 } 444 445 /* 446 * Try to get the size of a file. 447 */ 448 static ReturnStatus 449 load_getsize(int fd, size_t *ret) 450 { 451 struct stat st; 452 453 if (fstat(fd, &st) < 0) { 454 return FAILURE; 455 } 456 457 if (!S_ISREG(st.st_mode)) { 458 return FAILURE; 459 } 460 461 /* 462 * st_size is an off_t, which is 64 bits signed; *ret is 463 * size_t, which might be 32 bits unsigned or 64 bits 464 * unsigned. Rather than being elaborate, just punt on 465 * files that are more than 2^31 bytes. We should never 466 * see a makefile that size in practice... 467 * 468 * While we're at it reject negative sizes too, just in case. 469 */ 470 if (st.st_size < 0 || st.st_size > 0x7fffffff) { 471 return FAILURE; 472 } 473 474 *ret = (size_t) st.st_size; 475 return SUCCESS; 476 } 477 478 /* 479 * Read in a file. 480 * 481 * Until the path search logic can be moved under here instead of 482 * being in the caller in another source file, we need to have the fd 483 * passed in already open. Bleh. 484 * 485 * If the path is NULL use stdin and (to insure against fd leaks) 486 * assert that the caller passed in -1. 487 */ 488 static struct loadedfile * 489 loadfile(const char *path, int fd) 490 { 491 struct loadedfile *lf; 492 #ifdef HAVE_MMAP 493 long pagesize; 494 #endif 495 ssize_t result; 496 size_t bufpos; 497 498 lf = loadedfile_create(path); 499 500 if (path == NULL) { 501 assert(fd == -1); 502 fd = STDIN_FILENO; 503 } else { 504 #if 0 /* notyet */ 505 fd = open(path, O_RDONLY); 506 if (fd < 0) { 507 ... 508 Error("%s: %s", path, strerror(errno)); 509 exit(1); 510 } 511 #endif 512 } 513 514 #ifdef HAVE_MMAP 515 if (load_getsize(fd, &lf->len) == SUCCESS) { 516 /* found a size, try mmap */ 517 #ifdef _SC_PAGESIZE 518 pagesize = sysconf(_SC_PAGESIZE); 519 #else 520 pagesize = 0; 521 #endif 522 if (pagesize <= 0) { 523 pagesize = 0x1000; 524 } 525 /* round size up to a page */ 526 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 527 528 /* 529 * XXX hack for dealing with empty files; remove when 530 * we're no longer limited by interfacing to the old 531 * logic elsewhere in this file. 532 */ 533 if (lf->maplen == 0) { 534 lf->maplen = pagesize; 535 } 536 537 /* 538 * FUTURE: remove PROT_WRITE when the parser no longer 539 * needs to scribble on the input. 540 */ 541 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 542 MAP_FILE|MAP_COPY, fd, 0); 543 if (lf->buf != MAP_FAILED) { 544 /* succeeded */ 545 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 546 char *b = bmake_malloc(lf->len + 1); 547 b[lf->len] = '\n'; 548 memcpy(b, lf->buf, lf->len++); 549 munmap(lf->buf, lf->maplen); 550 lf->maplen = 0; 551 lf->buf = b; 552 } 553 goto done; 554 } 555 } 556 #endif 557 /* cannot mmap; load the traditional way */ 558 559 lf->maplen = 0; 560 lf->len = 1024; 561 lf->buf = bmake_malloc(lf->len); 562 563 bufpos = 0; 564 while (1) { 565 assert(bufpos <= lf->len); 566 if (bufpos == lf->len) { 567 if (lf->len > SIZE_MAX/2) { 568 errno = EFBIG; 569 Error("%s: file too large", path); 570 exit(1); 571 } 572 lf->len *= 2; 573 lf->buf = bmake_realloc(lf->buf, lf->len); 574 } 575 assert(bufpos < lf->len); 576 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 577 if (result < 0) { 578 Error("%s: read error: %s", path, strerror(errno)); 579 exit(1); 580 } 581 if (result == 0) { 582 break; 583 } 584 bufpos += result; 585 } 586 assert(bufpos <= lf->len); 587 lf->len = bufpos; 588 589 /* truncate malloc region to actual length (maybe not useful) */ 590 if (lf->len > 0) { 591 /* as for mmap case, ensure trailing \n */ 592 if (lf->buf[lf->len - 1] != '\n') 593 lf->len++; 594 lf->buf = bmake_realloc(lf->buf, lf->len); 595 lf->buf[lf->len - 1] = '\n'; 596 } 597 598 #ifdef HAVE_MMAP 599 done: 600 #endif 601 if (path != NULL) { 602 close(fd); 603 } 604 return lf; 605 } 606 607 //////////////////////////////////////////////////////////// 608 // old code 609 610 /*- 611 *---------------------------------------------------------------------- 612 * ParseIsEscaped -- 613 * Check if the current character is escaped on the current line 614 * 615 * Results: 616 * 0 if the character is not backslash escaped, 1 otherwise 617 * 618 * Side Effects: 619 * None 620 *---------------------------------------------------------------------- 621 */ 622 static int 623 ParseIsEscaped(const char *line, const char *c) 624 { 625 int active = 0; 626 for (;;) { 627 if (line == c) 628 return active; 629 if (*--c != '\\') 630 return active; 631 active = !active; 632 } 633 } 634 635 /*- 636 *---------------------------------------------------------------------- 637 * ParseFindKeyword -- 638 * Look in the table of keywords for one matching the given string. 639 * 640 * Input: 641 * str String to find 642 * 643 * Results: 644 * The index of the keyword, or -1 if it isn't there. 645 * 646 * Side Effects: 647 * None 648 *---------------------------------------------------------------------- 649 */ 650 static int 651 ParseFindKeyword(const char *str) 652 { 653 int start, end, cur; 654 int diff; 655 656 start = 0; 657 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 658 659 do { 660 cur = start + ((end - start) / 2); 661 diff = strcmp(str, parseKeywords[cur].name); 662 663 if (diff == 0) { 664 return (cur); 665 } else if (diff < 0) { 666 end = cur - 1; 667 } else { 668 start = cur + 1; 669 } 670 } while (start <= end); 671 return (-1); 672 } 673 674 /*- 675 * ParseVErrorInternal -- 676 * Error message abort function for parsing. Prints out the context 677 * of the error (line number and file) as well as the message with 678 * two optional arguments. 679 * 680 * Results: 681 * None 682 * 683 * Side Effects: 684 * "fatals" is incremented if the level is PARSE_FATAL. 685 */ 686 /* VARARGS */ 687 static void 688 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 689 const char *fmt, va_list ap) 690 { 691 static Boolean fatal_warning_error_printed = FALSE; 692 693 (void)fprintf(f, "%s: ", progname); 694 695 if (cfname != NULL) { 696 (void)fprintf(f, "\""); 697 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 698 char *cp; 699 const char *dir; 700 701 /* 702 * Nothing is more annoying than not knowing 703 * which Makefile is the culprit. 704 */ 705 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 706 if (dir == NULL || *dir == '\0' || 707 (*dir == '.' && dir[1] == '\0')) 708 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 709 if (dir == NULL) 710 dir = "."; 711 712 (void)fprintf(f, "%s/%s", dir, cfname); 713 } else 714 (void)fprintf(f, "%s", cfname); 715 716 (void)fprintf(f, "\" line %d: ", (int)clineno); 717 } 718 if (type == PARSE_WARNING) 719 (void)fprintf(f, "warning: "); 720 (void)vfprintf(f, fmt, ap); 721 (void)fprintf(f, "\n"); 722 (void)fflush(f); 723 if (type == PARSE_FATAL || parseWarnFatal) 724 fatals += 1; 725 if (parseWarnFatal && !fatal_warning_error_printed) { 726 Error("parsing warnings being treated as errors"); 727 fatal_warning_error_printed = TRUE; 728 } 729 } 730 731 /*- 732 * ParseErrorInternal -- 733 * Error function 734 * 735 * Results: 736 * None 737 * 738 * Side Effects: 739 * None 740 */ 741 /* VARARGS */ 742 static void 743 ParseErrorInternal(const char *cfname, size_t clineno, int type, 744 const char *fmt, ...) 745 { 746 va_list ap; 747 748 va_start(ap, fmt); 749 (void)fflush(stdout); 750 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 751 va_end(ap); 752 753 if (debug_file != stderr && debug_file != stdout) { 754 va_start(ap, fmt); 755 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 756 va_end(ap); 757 } 758 } 759 760 /*- 761 * Parse_Error -- 762 * External interface to ParseErrorInternal; uses the default filename 763 * Line number. 764 * 765 * Results: 766 * None 767 * 768 * Side Effects: 769 * None 770 */ 771 /* VARARGS */ 772 void 773 Parse_Error(int type, const char *fmt, ...) 774 { 775 va_list ap; 776 const char *fname; 777 size_t lineno; 778 779 if (curFile == NULL) { 780 fname = NULL; 781 lineno = 0; 782 } else { 783 fname = curFile->fname; 784 lineno = curFile->lineno; 785 } 786 787 va_start(ap, fmt); 788 (void)fflush(stdout); 789 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 790 va_end(ap); 791 792 if (debug_file != stderr && debug_file != stdout) { 793 va_start(ap, fmt); 794 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 795 va_end(ap); 796 } 797 } 798 799 800 /* 801 * ParseMessage 802 * Parse a .info .warning or .error directive 803 * 804 * The input is the line minus the ".". We substitute 805 * variables, print the message and exit(1) (for .error) or just print 806 * a warning if the directive is malformed. 807 */ 808 static Boolean 809 ParseMessage(char *line) 810 { 811 int mtype; 812 813 switch(*line) { 814 case 'i': 815 mtype = 0; 816 break; 817 case 'w': 818 mtype = PARSE_WARNING; 819 break; 820 case 'e': 821 mtype = PARSE_FATAL; 822 break; 823 default: 824 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 825 return FALSE; 826 } 827 828 while (isalpha((unsigned char)*line)) 829 line++; 830 if (!isspace((unsigned char)*line)) 831 return FALSE; /* not for us */ 832 while (isspace((unsigned char)*line)) 833 line++; 834 835 line = Var_Subst(NULL, line, VAR_CMD, VARF_WANTRES); 836 Parse_Error(mtype, "%s", line); 837 free(line); 838 839 if (mtype == PARSE_FATAL) { 840 /* Terminate immediately. */ 841 exit(1); 842 } 843 return TRUE; 844 } 845 846 /*- 847 *--------------------------------------------------------------------- 848 * ParseLinkSrc -- 849 * Link the parent node to its new child. Used in a Lst_ForEach by 850 * ParseDoDependency. If the specType isn't 'Not', the parent 851 * isn't linked as a parent of the child. 852 * 853 * Input: 854 * pgnp The parent node 855 * cgpn The child node 856 * 857 * Results: 858 * Always = 0 859 * 860 * Side Effects: 861 * New elements are added to the parents list of cgn and the 862 * children list of cgn. the unmade field of pgn is updated 863 * to reflect the additional child. 864 *--------------------------------------------------------------------- 865 */ 866 static int 867 ParseLinkSrc(void *pgnp, void *cgnp) 868 { 869 GNode *pgn = (GNode *)pgnp; 870 GNode *cgn = (GNode *)cgnp; 871 872 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 873 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 874 (void)Lst_AtEnd(pgn->children, cgn); 875 if (specType == Not) 876 (void)Lst_AtEnd(cgn->parents, pgn); 877 pgn->unmade += 1; 878 if (DEBUG(PARSE)) { 879 fprintf(debug_file, "# %s: added child %s - %s\n", __func__, 880 pgn->name, cgn->name); 881 Targ_PrintNode(pgn, 0); 882 Targ_PrintNode(cgn, 0); 883 } 884 return (0); 885 } 886 887 /*- 888 *--------------------------------------------------------------------- 889 * ParseDoOp -- 890 * Apply the parsed operator to the given target node. Used in a 891 * Lst_ForEach call by ParseDoDependency once all targets have 892 * been found and their operator parsed. If the previous and new 893 * operators are incompatible, a major error is taken. 894 * 895 * Input: 896 * gnp The node to which the operator is to be applied 897 * opp The operator to apply 898 * 899 * Results: 900 * Always 0 901 * 902 * Side Effects: 903 * The type field of the node is altered to reflect any new bits in 904 * the op. 905 *--------------------------------------------------------------------- 906 */ 907 static int 908 ParseDoOp(void *gnp, void *opp) 909 { 910 GNode *gn = (GNode *)gnp; 911 int op = *(int *)opp; 912 /* 913 * If the dependency mask of the operator and the node don't match and 914 * the node has actually had an operator applied to it before, and 915 * the operator actually has some dependency information in it, complain. 916 */ 917 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 918 !OP_NOP(gn->type) && !OP_NOP(op)) 919 { 920 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 921 return (1); 922 } 923 924 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 925 /* 926 * If the node was the object of a :: operator, we need to create a 927 * new instance of it for the children and commands on this dependency 928 * line. The new instance is placed on the 'cohorts' list of the 929 * initial one (note the initial one is not on its own cohorts list) 930 * and the new instance is linked to all parents of the initial 931 * instance. 932 */ 933 GNode *cohort; 934 935 /* 936 * Propagate copied bits to the initial node. They'll be propagated 937 * back to the rest of the cohorts later. 938 */ 939 gn->type |= op & ~OP_OPMASK; 940 941 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 942 if (doing_depend) 943 ParseMark(cohort); 944 /* 945 * Make the cohort invisible as well to avoid duplicating it into 946 * other variables. True, parents of this target won't tend to do 947 * anything with their local variables, but better safe than 948 * sorry. (I think this is pointless now, since the relevant list 949 * traversals will no longer see this node anyway. -mycroft) 950 */ 951 cohort->type = op | OP_INVISIBLE; 952 (void)Lst_AtEnd(gn->cohorts, cohort); 953 cohort->centurion = gn; 954 gn->unmade_cohorts += 1; 955 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 956 gn->unmade_cohorts); 957 } else { 958 /* 959 * We don't want to nuke any previous flags (whatever they were) so we 960 * just OR the new operator into the old 961 */ 962 gn->type |= op; 963 } 964 965 return (0); 966 } 967 968 /*- 969 *--------------------------------------------------------------------- 970 * ParseDoSrc -- 971 * Given the name of a source, figure out if it is an attribute 972 * and apply it to the targets if it is. Else decide if there is 973 * some attribute which should be applied *to* the source because 974 * of some special target and apply it if so. Otherwise, make the 975 * source be a child of the targets in the list 'targets' 976 * 977 * Input: 978 * tOp operator (if any) from special targets 979 * src name of the source to handle 980 * 981 * Results: 982 * None 983 * 984 * Side Effects: 985 * Operator bits may be added to the list of targets or to the source. 986 * The targets may have a new source added to their lists of children. 987 *--------------------------------------------------------------------- 988 */ 989 static void 990 ParseDoSrc(int tOp, const char *src) 991 { 992 GNode *gn = NULL; 993 static int wait_number = 0; 994 char wait_src[16]; 995 996 if (*src == '.' && isupper ((unsigned char)src[1])) { 997 int keywd = ParseFindKeyword(src); 998 if (keywd != -1) { 999 int op = parseKeywords[keywd].op; 1000 if (op != 0) { 1001 Lst_ForEach(targets, ParseDoOp, &op); 1002 return; 1003 } 1004 if (parseKeywords[keywd].spec == Wait) { 1005 /* 1006 * We add a .WAIT node in the dependency list. 1007 * After any dynamic dependencies (and filename globbing) 1008 * have happened, it is given a dependency on the each 1009 * previous child back to and previous .WAIT node. 1010 * The next child won't be scheduled until the .WAIT node 1011 * is built. 1012 * We give each .WAIT node a unique name (mainly for diag). 1013 */ 1014 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 1015 gn = Targ_FindNode(wait_src, TARG_NOHASH); 1016 if (doing_depend) 1017 ParseMark(gn); 1018 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 1019 Lst_ForEach(targets, ParseLinkSrc, gn); 1020 return; 1021 } 1022 } 1023 } 1024 1025 switch (specType) { 1026 case Main: 1027 /* 1028 * If we have noted the existence of a .MAIN, it means we need 1029 * to add the sources of said target to the list of things 1030 * to create. The string 'src' is likely to be free, so we 1031 * must make a new copy of it. Note that this will only be 1032 * invoked if the user didn't specify a target on the command 1033 * line. This is to allow #ifmake's to succeed, or something... 1034 */ 1035 (void)Lst_AtEnd(create, bmake_strdup(src)); 1036 /* 1037 * Add the name to the .TARGETS variable as well, so the user can 1038 * employ that, if desired. 1039 */ 1040 Var_Append(".TARGETS", src, VAR_GLOBAL); 1041 return; 1042 1043 case Order: 1044 /* 1045 * Create proper predecessor/successor links between the previous 1046 * source and the current one. 1047 */ 1048 gn = Targ_FindNode(src, TARG_CREATE); 1049 if (doing_depend) 1050 ParseMark(gn); 1051 if (predecessor != NULL) { 1052 (void)Lst_AtEnd(predecessor->order_succ, gn); 1053 (void)Lst_AtEnd(gn->order_pred, predecessor); 1054 if (DEBUG(PARSE)) { 1055 fprintf(debug_file, "# %s: added Order dependency %s - %s\n", 1056 __func__, predecessor->name, gn->name); 1057 Targ_PrintNode(predecessor, 0); 1058 Targ_PrintNode(gn, 0); 1059 } 1060 } 1061 /* 1062 * The current source now becomes the predecessor for the next one. 1063 */ 1064 predecessor = gn; 1065 break; 1066 1067 default: 1068 /* 1069 * If the source is not an attribute, we need to find/create 1070 * a node for it. After that we can apply any operator to it 1071 * from a special target or link it to its parents, as 1072 * appropriate. 1073 * 1074 * In the case of a source that was the object of a :: operator, 1075 * the attribute is applied to all of its instances (as kept in 1076 * the 'cohorts' list of the node) or all the cohorts are linked 1077 * to all the targets. 1078 */ 1079 1080 /* Find/create the 'src' node and attach to all targets */ 1081 gn = Targ_FindNode(src, TARG_CREATE); 1082 if (doing_depend) 1083 ParseMark(gn); 1084 if (tOp) { 1085 gn->type |= tOp; 1086 } else { 1087 Lst_ForEach(targets, ParseLinkSrc, gn); 1088 } 1089 break; 1090 } 1091 } 1092 1093 /*- 1094 *----------------------------------------------------------------------- 1095 * ParseFindMain -- 1096 * Find a real target in the list and set it to be the main one. 1097 * Called by ParseDoDependency when a main target hasn't been found 1098 * yet. 1099 * 1100 * Input: 1101 * gnp Node to examine 1102 * 1103 * Results: 1104 * 0 if main not found yet, 1 if it is. 1105 * 1106 * Side Effects: 1107 * mainNode is changed and Targ_SetMain is called. 1108 * 1109 *----------------------------------------------------------------------- 1110 */ 1111 static int 1112 ParseFindMain(void *gnp, void *dummy MAKE_ATTR_UNUSED) 1113 { 1114 GNode *gn = (GNode *)gnp; 1115 if ((gn->type & OP_NOTARGET) == 0) { 1116 mainNode = gn; 1117 Targ_SetMain(gn); 1118 return 1; 1119 } else { 1120 return 0; 1121 } 1122 } 1123 1124 /*- 1125 *----------------------------------------------------------------------- 1126 * ParseAddDir -- 1127 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1128 * 1129 * Results: 1130 * === 0 1131 * 1132 * Side Effects: 1133 * See Dir_AddDir. 1134 * 1135 *----------------------------------------------------------------------- 1136 */ 1137 static int 1138 ParseAddDir(void *path, void *name) 1139 { 1140 (void)Dir_AddDir((Lst) path, (char *)name); 1141 return(0); 1142 } 1143 1144 /*- 1145 *----------------------------------------------------------------------- 1146 * ParseClearPath -- 1147 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1148 * 1149 * Results: 1150 * === 0 1151 * 1152 * Side Effects: 1153 * See Dir_ClearPath 1154 * 1155 *----------------------------------------------------------------------- 1156 */ 1157 static int 1158 ParseClearPath(void *path, void *dummy MAKE_ATTR_UNUSED) 1159 { 1160 Dir_ClearPath((Lst) path); 1161 return 0; 1162 } 1163 1164 /*- 1165 *--------------------------------------------------------------------- 1166 * ParseDoDependency -- 1167 * Parse the dependency line in line. 1168 * 1169 * Input: 1170 * line the line to parse 1171 * 1172 * Results: 1173 * None 1174 * 1175 * Side Effects: 1176 * The nodes of the sources are linked as children to the nodes of the 1177 * targets. Some nodes may be created. 1178 * 1179 * We parse a dependency line by first extracting words from the line and 1180 * finding nodes in the list of all targets with that name. This is done 1181 * until a character is encountered which is an operator character. Currently 1182 * these are only ! and :. At this point the operator is parsed and the 1183 * pointer into the line advanced until the first source is encountered. 1184 * The parsed operator is applied to each node in the 'targets' list, 1185 * which is where the nodes found for the targets are kept, by means of 1186 * the ParseDoOp function. 1187 * The sources are read in much the same way as the targets were except 1188 * that now they are expanded using the wildcarding scheme of the C-Shell 1189 * and all instances of the resulting words in the list of all targets 1190 * are found. Each of the resulting nodes is then linked to each of the 1191 * targets as one of its children. 1192 * Certain targets are handled specially. These are the ones detailed 1193 * by the specType variable. 1194 * The storing of transformation rules is also taken care of here. 1195 * A target is recognized as a transformation rule by calling 1196 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1197 * from the suffix module via Suff_AddTransform rather than the standard 1198 * Targ_FindNode in the target module. 1199 *--------------------------------------------------------------------- 1200 */ 1201 static void 1202 ParseDoDependency(char *line) 1203 { 1204 char *cp; /* our current position */ 1205 GNode *gn = NULL; /* a general purpose temporary node */ 1206 int op; /* the operator on the line */ 1207 char savec; /* a place to save a character */ 1208 Lst paths; /* List of search paths to alter when parsing 1209 * a list of .PATH targets */ 1210 int tOp; /* operator from special target */ 1211 Lst sources; /* list of archive source names after 1212 * expansion */ 1213 Lst curTargs; /* list of target names to be found and added 1214 * to the targets list */ 1215 char *lstart = line; 1216 1217 if (DEBUG(PARSE)) 1218 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1219 tOp = 0; 1220 1221 specType = Not; 1222 paths = NULL; 1223 1224 curTargs = Lst_Init(FALSE); 1225 1226 /* 1227 * First, grind through the targets. 1228 */ 1229 1230 do { 1231 /* 1232 * Here LINE points to the beginning of the next word, and 1233 * LSTART points to the actual beginning of the line. 1234 */ 1235 1236 /* Find the end of the next word. */ 1237 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1238 !(isspace((unsigned char)*cp) || 1239 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1240 cp++) { 1241 if (*cp == '$') { 1242 /* 1243 * Must be a dynamic source (would have been expanded 1244 * otherwise), so call the Var module to parse the puppy 1245 * so we can safely advance beyond it...There should be 1246 * no errors in this, as they would have been discovered 1247 * in the initial Var_Subst and we wouldn't be here. 1248 */ 1249 int length; 1250 void *freeIt; 1251 1252 (void)Var_Parse(cp, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES, 1253 &length, &freeIt); 1254 free(freeIt); 1255 cp += length-1; 1256 } 1257 } 1258 1259 /* 1260 * If the word is followed by a left parenthesis, it's the 1261 * name of an object file inside an archive (ar file). 1262 */ 1263 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1264 /* 1265 * Archives must be handled specially to make sure the OP_ARCHV 1266 * flag is set in their 'type' field, for one thing, and because 1267 * things like "archive(file1.o file2.o file3.o)" are permissible. 1268 * Arch_ParseArchive will set 'line' to be the first non-blank 1269 * after the archive-spec. It creates/finds nodes for the members 1270 * and places them on the given list, returning SUCCESS if all 1271 * went well and FAILURE if there was an error in the 1272 * specification. On error, line should remain untouched. 1273 */ 1274 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1275 Parse_Error(PARSE_FATAL, 1276 "Error in archive specification: \"%s\"", line); 1277 goto out; 1278 } else { 1279 /* Done with this word; on to the next. */ 1280 cp = line; 1281 continue; 1282 } 1283 } 1284 1285 if (!*cp) { 1286 /* 1287 * We got to the end of the line while we were still 1288 * looking at targets. 1289 * 1290 * Ending a dependency line without an operator is a Bozo 1291 * no-no. As a heuristic, this is also often triggered by 1292 * undetected conflicts from cvs/rcs merges. 1293 */ 1294 if ((strncmp(line, "<<<<<<", 6) == 0) || 1295 (strncmp(line, "======", 6) == 0) || 1296 (strncmp(line, ">>>>>>", 6) == 0)) 1297 Parse_Error(PARSE_FATAL, 1298 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1299 else 1300 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1301 : "Need an operator"); 1302 goto out; 1303 } 1304 1305 /* Insert a null terminator. */ 1306 savec = *cp; 1307 *cp = '\0'; 1308 1309 /* 1310 * Got the word. See if it's a special target and if so set 1311 * specType to match it. 1312 */ 1313 if (*line == '.' && isupper ((unsigned char)line[1])) { 1314 /* 1315 * See if the target is a special target that must have it 1316 * or its sources handled specially. 1317 */ 1318 int keywd = ParseFindKeyword(line); 1319 if (keywd != -1) { 1320 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1321 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1322 goto out; 1323 } 1324 1325 specType = parseKeywords[keywd].spec; 1326 tOp = parseKeywords[keywd].op; 1327 1328 /* 1329 * Certain special targets have special semantics: 1330 * .PATH Have to set the dirSearchPath 1331 * variable too 1332 * .MAIN Its sources are only used if 1333 * nothing has been specified to 1334 * create. 1335 * .DEFAULT Need to create a node to hang 1336 * commands on, but we don't want 1337 * it in the graph, nor do we want 1338 * it to be the Main Target, so we 1339 * create it, set OP_NOTMAIN and 1340 * add it to the list, setting 1341 * DEFAULT to the new node for 1342 * later use. We claim the node is 1343 * A transformation rule to make 1344 * life easier later, when we'll 1345 * use Make_HandleUse to actually 1346 * apply the .DEFAULT commands. 1347 * .PHONY The list of targets 1348 * .NOPATH Don't search for file in the path 1349 * .STALE 1350 * .BEGIN 1351 * .END 1352 * .ERROR 1353 * .DELETE_ON_ERROR 1354 * .INTERRUPT Are not to be considered the 1355 * main target. 1356 * .NOTPARALLEL Make only one target at a time. 1357 * .SINGLESHELL Create a shell for each command. 1358 * .ORDER Must set initial predecessor to NULL 1359 */ 1360 switch (specType) { 1361 case ExPath: 1362 if (paths == NULL) { 1363 paths = Lst_Init(FALSE); 1364 } 1365 (void)Lst_AtEnd(paths, dirSearchPath); 1366 break; 1367 case Main: 1368 if (!Lst_IsEmpty(create)) { 1369 specType = Not; 1370 } 1371 break; 1372 case Begin: 1373 case End: 1374 case Stale: 1375 case dotError: 1376 case Interrupt: 1377 gn = Targ_FindNode(line, TARG_CREATE); 1378 if (doing_depend) 1379 ParseMark(gn); 1380 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1381 (void)Lst_AtEnd(targets, gn); 1382 break; 1383 case Default: 1384 gn = Targ_NewGN(".DEFAULT"); 1385 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1386 (void)Lst_AtEnd(targets, gn); 1387 DEFAULT = gn; 1388 break; 1389 case DeleteOnError: 1390 deleteOnError = TRUE; 1391 break; 1392 case NotParallel: 1393 maxJobs = 1; 1394 break; 1395 case SingleShell: 1396 compatMake = TRUE; 1397 break; 1398 case Order: 1399 predecessor = NULL; 1400 break; 1401 default: 1402 break; 1403 } 1404 } else if (strncmp(line, ".PATH", 5) == 0) { 1405 /* 1406 * .PATH<suffix> has to be handled specially. 1407 * Call on the suffix module to give us a path to 1408 * modify. 1409 */ 1410 Lst path; 1411 1412 specType = ExPath; 1413 path = Suff_GetPath(&line[5]); 1414 if (path == NULL) { 1415 Parse_Error(PARSE_FATAL, 1416 "Suffix '%s' not defined (yet)", 1417 &line[5]); 1418 goto out; 1419 } else { 1420 if (paths == NULL) { 1421 paths = Lst_Init(FALSE); 1422 } 1423 (void)Lst_AtEnd(paths, path); 1424 } 1425 } 1426 } 1427 1428 /* 1429 * Have word in line. Get or create its node and stick it at 1430 * the end of the targets list 1431 */ 1432 if ((specType == Not) && (*line != '\0')) { 1433 if (Dir_HasWildcards(line)) { 1434 /* 1435 * Targets are to be sought only in the current directory, 1436 * so create an empty path for the thing. Note we need to 1437 * use Dir_Destroy in the destruction of the path as the 1438 * Dir module could have added a directory to the path... 1439 */ 1440 Lst emptyPath = Lst_Init(FALSE); 1441 1442 Dir_Expand(line, emptyPath, curTargs); 1443 1444 Lst_Destroy(emptyPath, Dir_Destroy); 1445 } else { 1446 /* 1447 * No wildcards, but we want to avoid code duplication, 1448 * so create a list with the word on it. 1449 */ 1450 (void)Lst_AtEnd(curTargs, line); 1451 } 1452 1453 /* Apply the targets. */ 1454 1455 while(!Lst_IsEmpty(curTargs)) { 1456 char *targName = (char *)Lst_DeQueue(curTargs); 1457 1458 if (!Suff_IsTransform (targName)) { 1459 gn = Targ_FindNode(targName, TARG_CREATE); 1460 } else { 1461 gn = Suff_AddTransform(targName); 1462 } 1463 if (doing_depend) 1464 ParseMark(gn); 1465 1466 (void)Lst_AtEnd(targets, gn); 1467 } 1468 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1469 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1470 } 1471 1472 /* Don't need the inserted null terminator any more. */ 1473 *cp = savec; 1474 1475 /* 1476 * If it is a special type and not .PATH, it's the only target we 1477 * allow on this line... 1478 */ 1479 if (specType != Not && specType != ExPath) { 1480 Boolean warning = FALSE; 1481 1482 while (*cp && (ParseIsEscaped(lstart, cp) || 1483 ((*cp != '!') && (*cp != ':')))) { 1484 if (ParseIsEscaped(lstart, cp) || 1485 (*cp != ' ' && *cp != '\t')) { 1486 warning = TRUE; 1487 } 1488 cp++; 1489 } 1490 if (warning) { 1491 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1492 } 1493 } else { 1494 while (*cp && isspace ((unsigned char)*cp)) { 1495 cp++; 1496 } 1497 } 1498 line = cp; 1499 } while (*line && (ParseIsEscaped(lstart, line) || 1500 ((*line != '!') && (*line != ':')))); 1501 1502 /* 1503 * Don't need the list of target names anymore... 1504 */ 1505 Lst_Destroy(curTargs, NULL); 1506 curTargs = NULL; 1507 1508 if (!Lst_IsEmpty(targets)) { 1509 switch(specType) { 1510 default: 1511 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1512 break; 1513 case Default: 1514 case Stale: 1515 case Begin: 1516 case End: 1517 case dotError: 1518 case Interrupt: 1519 /* 1520 * These four create nodes on which to hang commands, so 1521 * targets shouldn't be empty... 1522 */ 1523 case Not: 1524 /* 1525 * Nothing special here -- targets can be empty if it wants. 1526 */ 1527 break; 1528 } 1529 } 1530 1531 /* 1532 * Have now parsed all the target names. Must parse the operator next. The 1533 * result is left in op . 1534 */ 1535 if (*cp == '!') { 1536 op = OP_FORCE; 1537 } else if (*cp == ':') { 1538 if (cp[1] == ':') { 1539 op = OP_DOUBLEDEP; 1540 cp++; 1541 } else { 1542 op = OP_DEPENDS; 1543 } 1544 } else { 1545 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1546 : "Missing dependency operator"); 1547 goto out; 1548 } 1549 1550 /* Advance beyond the operator */ 1551 cp++; 1552 1553 /* 1554 * Apply the operator to the target. This is how we remember which 1555 * operator a target was defined with. It fails if the operator 1556 * used isn't consistent across all references. 1557 */ 1558 Lst_ForEach(targets, ParseDoOp, &op); 1559 1560 /* 1561 * Onward to the sources. 1562 * 1563 * LINE will now point to the first source word, if any, or the 1564 * end of the string if not. 1565 */ 1566 while (*cp && isspace ((unsigned char)*cp)) { 1567 cp++; 1568 } 1569 line = cp; 1570 1571 /* 1572 * Several special targets take different actions if present with no 1573 * sources: 1574 * a .SUFFIXES line with no sources clears out all old suffixes 1575 * a .PRECIOUS line makes all targets precious 1576 * a .IGNORE line ignores errors for all targets 1577 * a .SILENT line creates silence when making all targets 1578 * a .PATH removes all directories from the search path(s). 1579 */ 1580 if (!*line) { 1581 switch (specType) { 1582 case Suffixes: 1583 Suff_ClearSuffixes(); 1584 break; 1585 case Precious: 1586 allPrecious = TRUE; 1587 break; 1588 case Ignore: 1589 ignoreErrors = TRUE; 1590 break; 1591 case Silent: 1592 beSilent = TRUE; 1593 break; 1594 case ExPath: 1595 Lst_ForEach(paths, ParseClearPath, NULL); 1596 Dir_SetPATH(); 1597 break; 1598 #ifdef POSIX 1599 case Posix: 1600 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1601 break; 1602 #endif 1603 default: 1604 break; 1605 } 1606 } else if (specType == MFlags) { 1607 /* 1608 * Call on functions in main.c to deal with these arguments and 1609 * set the initial character to a null-character so the loop to 1610 * get sources won't get anything 1611 */ 1612 Main_ParseArgLine(line); 1613 *line = '\0'; 1614 } else if (specType == ExShell) { 1615 if (Job_ParseShell(line) != SUCCESS) { 1616 Parse_Error(PARSE_FATAL, "improper shell specification"); 1617 goto out; 1618 } 1619 *line = '\0'; 1620 } else if ((specType == NotParallel) || (specType == SingleShell) || 1621 (specType == DeleteOnError)) { 1622 *line = '\0'; 1623 } 1624 1625 /* 1626 * NOW GO FOR THE SOURCES 1627 */ 1628 if ((specType == Suffixes) || (specType == ExPath) || 1629 (specType == Includes) || (specType == Libs) || 1630 (specType == Null) || (specType == ExObjdir)) 1631 { 1632 while (*line) { 1633 /* 1634 * If the target was one that doesn't take files as its sources 1635 * but takes something like suffixes, we take each 1636 * space-separated word on the line as a something and deal 1637 * with it accordingly. 1638 * 1639 * If the target was .SUFFIXES, we take each source as a 1640 * suffix and add it to the list of suffixes maintained by the 1641 * Suff module. 1642 * 1643 * If the target was a .PATH, we add the source as a directory 1644 * to search on the search path. 1645 * 1646 * If it was .INCLUDES, the source is taken to be the suffix of 1647 * files which will be #included and whose search path should 1648 * be present in the .INCLUDES variable. 1649 * 1650 * If it was .LIBS, the source is taken to be the suffix of 1651 * files which are considered libraries and whose search path 1652 * should be present in the .LIBS variable. 1653 * 1654 * If it was .NULL, the source is the suffix to use when a file 1655 * has no valid suffix. 1656 * 1657 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1658 * and will cause make to do a new chdir to that path. 1659 */ 1660 while (*cp && !isspace ((unsigned char)*cp)) { 1661 cp++; 1662 } 1663 savec = *cp; 1664 *cp = '\0'; 1665 switch (specType) { 1666 case Suffixes: 1667 Suff_AddSuffix(line, &mainNode); 1668 break; 1669 case ExPath: 1670 Lst_ForEach(paths, ParseAddDir, line); 1671 break; 1672 case Includes: 1673 Suff_AddInclude(line); 1674 break; 1675 case Libs: 1676 Suff_AddLib(line); 1677 break; 1678 case Null: 1679 Suff_SetNull(line); 1680 break; 1681 case ExObjdir: 1682 Main_SetObjdir("%s", line); 1683 break; 1684 default: 1685 break; 1686 } 1687 *cp = savec; 1688 if (savec != '\0') { 1689 cp++; 1690 } 1691 while (*cp && isspace ((unsigned char)*cp)) { 1692 cp++; 1693 } 1694 line = cp; 1695 } 1696 if (paths) { 1697 Lst_Destroy(paths, NULL); 1698 paths = NULL; 1699 } 1700 if (specType == ExPath) 1701 Dir_SetPATH(); 1702 } else { 1703 assert(paths == NULL); 1704 while (*line) { 1705 /* 1706 * The targets take real sources, so we must beware of archive 1707 * specifications (i.e. things with left parentheses in them) 1708 * and handle them accordingly. 1709 */ 1710 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1711 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1712 /* 1713 * Only stop for a left parenthesis if it isn't at the 1714 * start of a word (that'll be for variable changes 1715 * later) and isn't preceded by a dollar sign (a dynamic 1716 * source). 1717 */ 1718 break; 1719 } 1720 } 1721 1722 if (*cp == LPAREN) { 1723 sources = Lst_Init(FALSE); 1724 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1725 Parse_Error(PARSE_FATAL, 1726 "Error in source archive spec \"%s\"", line); 1727 goto out; 1728 } 1729 1730 while (!Lst_IsEmpty (sources)) { 1731 gn = (GNode *)Lst_DeQueue(sources); 1732 ParseDoSrc(tOp, gn->name); 1733 } 1734 Lst_Destroy(sources, NULL); 1735 cp = line; 1736 } else { 1737 if (*cp) { 1738 *cp = '\0'; 1739 cp += 1; 1740 } 1741 1742 ParseDoSrc(tOp, line); 1743 } 1744 while (*cp && isspace ((unsigned char)*cp)) { 1745 cp++; 1746 } 1747 line = cp; 1748 } 1749 } 1750 1751 if (mainNode == NULL) { 1752 /* 1753 * If we have yet to decide on a main target to make, in the 1754 * absence of any user input, we want the first target on 1755 * the first dependency line that is actually a real target 1756 * (i.e. isn't a .USE or .EXEC rule) to be made. 1757 */ 1758 Lst_ForEach(targets, ParseFindMain, NULL); 1759 } 1760 1761 out: 1762 assert(paths == NULL); 1763 if (curTargs) 1764 Lst_Destroy(curTargs, NULL); 1765 } 1766 1767 /*- 1768 *--------------------------------------------------------------------- 1769 * Parse_IsVar -- 1770 * Return TRUE if the passed line is a variable assignment. A variable 1771 * assignment consists of a single word followed by optional whitespace 1772 * followed by either a += or an = operator. 1773 * This function is used both by the Parse_File function and main when 1774 * parsing the command-line arguments. 1775 * 1776 * Input: 1777 * line the line to check 1778 * 1779 * Results: 1780 * TRUE if it is. FALSE if it ain't 1781 * 1782 * Side Effects: 1783 * none 1784 *--------------------------------------------------------------------- 1785 */ 1786 Boolean 1787 Parse_IsVar(char *line) 1788 { 1789 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1790 char ch; 1791 int level = 0; 1792 #define ISEQOPERATOR(c) \ 1793 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1794 1795 /* 1796 * Skip to variable name 1797 */ 1798 for (;(*line == ' ') || (*line == '\t'); line++) 1799 continue; 1800 1801 /* Scan for one of the assignment operators outside a variable expansion */ 1802 while ((ch = *line++) != 0) { 1803 if (ch == '(' || ch == '{') { 1804 level++; 1805 continue; 1806 } 1807 if (ch == ')' || ch == '}') { 1808 level--; 1809 continue; 1810 } 1811 if (level != 0) 1812 continue; 1813 while (ch == ' ' || ch == '\t') { 1814 ch = *line++; 1815 wasSpace = TRUE; 1816 } 1817 #ifdef SUNSHCMD 1818 if (ch == ':' && strncmp(line, "sh", 2) == 0) { 1819 line += 2; 1820 continue; 1821 } 1822 #endif 1823 if (ch == '=') 1824 return TRUE; 1825 if (*line == '=' && ISEQOPERATOR(ch)) 1826 return TRUE; 1827 if (wasSpace) 1828 return FALSE; 1829 } 1830 1831 return FALSE; 1832 } 1833 1834 /*- 1835 *--------------------------------------------------------------------- 1836 * Parse_DoVar -- 1837 * Take the variable assignment in the passed line and do it in the 1838 * global context. 1839 * 1840 * Note: There is a lexical ambiguity with assignment modifier characters 1841 * in variable names. This routine interprets the character before the = 1842 * as a modifier. Therefore, an assignment like 1843 * C++=/usr/bin/CC 1844 * is interpreted as "C+ +=" instead of "C++ =". 1845 * 1846 * Input: 1847 * line a line guaranteed to be a variable assignment. 1848 * This reduces error checks 1849 * ctxt Context in which to do the assignment 1850 * 1851 * Results: 1852 * none 1853 * 1854 * Side Effects: 1855 * the variable structure of the given variable name is altered in the 1856 * global context. 1857 *--------------------------------------------------------------------- 1858 */ 1859 void 1860 Parse_DoVar(char *line, GNode *ctxt) 1861 { 1862 char *cp; /* pointer into line */ 1863 enum { 1864 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1865 } type; /* Type of assignment */ 1866 char *opc; /* ptr to operator character to 1867 * null-terminate the variable name */ 1868 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1869 * i.e. if any variable expansion was 1870 * performed */ 1871 int depth; 1872 1873 /* 1874 * Skip to variable name 1875 */ 1876 while ((*line == ' ') || (*line == '\t')) { 1877 line++; 1878 } 1879 1880 /* 1881 * Skip to operator character, nulling out whitespace as we go 1882 * XXX Rather than counting () and {} we should look for $ and 1883 * then expand the variable. 1884 */ 1885 for (depth = 0, cp = line + 1; depth > 0 || *cp != '='; cp++) { 1886 if (*cp == '(' || *cp == '{') { 1887 depth++; 1888 continue; 1889 } 1890 if (*cp == ')' || *cp == '}') { 1891 depth--; 1892 continue; 1893 } 1894 if (depth == 0 && isspace ((unsigned char)*cp)) { 1895 *cp = '\0'; 1896 } 1897 } 1898 opc = cp-1; /* operator is the previous character */ 1899 *cp++ = '\0'; /* nuke the = */ 1900 1901 /* 1902 * Check operator type 1903 */ 1904 switch (*opc) { 1905 case '+': 1906 type = VAR_APPEND; 1907 *opc = '\0'; 1908 break; 1909 1910 case '?': 1911 /* 1912 * If the variable already has a value, we don't do anything. 1913 */ 1914 *opc = '\0'; 1915 if (Var_Exists(line, ctxt)) { 1916 return; 1917 } else { 1918 type = VAR_NORMAL; 1919 } 1920 break; 1921 1922 case ':': 1923 type = VAR_SUBST; 1924 *opc = '\0'; 1925 break; 1926 1927 case '!': 1928 type = VAR_SHELL; 1929 *opc = '\0'; 1930 break; 1931 1932 default: 1933 #ifdef SUNSHCMD 1934 while (opc > line && *opc != ':') 1935 opc--; 1936 1937 if (strncmp(opc, ":sh", 3) == 0) { 1938 type = VAR_SHELL; 1939 *opc = '\0'; 1940 break; 1941 } 1942 #endif 1943 type = VAR_NORMAL; 1944 break; 1945 } 1946 1947 while (isspace ((unsigned char)*cp)) { 1948 cp++; 1949 } 1950 1951 if (type == VAR_APPEND) { 1952 Var_Append(line, cp, ctxt); 1953 } else if (type == VAR_SUBST) { 1954 /* 1955 * Allow variables in the old value to be undefined, but leave their 1956 * invocation alone -- this is done by forcing oldVars to be false. 1957 * XXX: This can cause recursive variables, but that's not hard to do, 1958 * and this allows someone to do something like 1959 * 1960 * CFLAGS = $(.INCLUDES) 1961 * CFLAGS := -I.. $(CFLAGS) 1962 * 1963 * And not get an error. 1964 */ 1965 Boolean oldOldVars = oldVars; 1966 1967 oldVars = FALSE; 1968 1969 /* 1970 * make sure that we set the variable the first time to nothing 1971 * so that it gets substituted! 1972 */ 1973 if (!Var_Exists(line, ctxt)) 1974 Var_Set(line, "", ctxt, 0); 1975 1976 cp = Var_Subst(NULL, cp, ctxt, VARF_WANTRES|VARF_ASSIGN); 1977 oldVars = oldOldVars; 1978 freeCp = TRUE; 1979 1980 Var_Set(line, cp, ctxt, 0); 1981 } else if (type == VAR_SHELL) { 1982 char *res; 1983 const char *error; 1984 1985 if (strchr(cp, '$') != NULL) { 1986 /* 1987 * There's a dollar sign in the command, so perform variable 1988 * expansion on the whole thing. The resulting string will need 1989 * freeing when we're done, so set freeCmd to TRUE. 1990 */ 1991 cp = Var_Subst(NULL, cp, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES); 1992 freeCp = TRUE; 1993 } 1994 1995 res = Cmd_Exec(cp, &error); 1996 Var_Set(line, res, ctxt, 0); 1997 free(res); 1998 1999 if (error) 2000 Parse_Error(PARSE_WARNING, error, cp); 2001 } else { 2002 /* 2003 * Normal assignment -- just do it. 2004 */ 2005 Var_Set(line, cp, ctxt, 0); 2006 } 2007 if (strcmp(line, MAKEOVERRIDES) == 0) 2008 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 2009 else if (strcmp(line, ".CURDIR") == 0) { 2010 /* 2011 * Somone is being (too?) clever... 2012 * Let's pretend they know what they are doing and 2013 * re-initialize the 'cur' Path. 2014 */ 2015 Dir_InitCur(cp); 2016 Dir_SetPATH(); 2017 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 2018 Job_SetPrefix(); 2019 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 2020 Var_Export(cp, 0); 2021 } 2022 if (freeCp) 2023 free(cp); 2024 } 2025 2026 2027 /* 2028 * ParseMaybeSubMake -- 2029 * Scan the command string to see if it a possible submake node 2030 * Input: 2031 * cmd the command to scan 2032 * Results: 2033 * TRUE if the command is possibly a submake, FALSE if not. 2034 */ 2035 static Boolean 2036 ParseMaybeSubMake(const char *cmd) 2037 { 2038 size_t i; 2039 static struct { 2040 const char *name; 2041 size_t len; 2042 } vals[] = { 2043 #define MKV(A) { A, sizeof(A) - 1 } 2044 MKV("${MAKE}"), 2045 MKV("${.MAKE}"), 2046 MKV("$(MAKE)"), 2047 MKV("$(.MAKE)"), 2048 MKV("make"), 2049 }; 2050 for (i = 0; i < sizeof(vals)/sizeof(vals[0]); i++) { 2051 char *ptr; 2052 if ((ptr = strstr(cmd, vals[i].name)) == NULL) 2053 continue; 2054 if ((ptr == cmd || !isalnum((unsigned char)ptr[-1])) 2055 && !isalnum((unsigned char)ptr[vals[i].len])) 2056 return TRUE; 2057 } 2058 return FALSE; 2059 } 2060 2061 /*- 2062 * ParseAddCmd -- 2063 * Lst_ForEach function to add a command line to all targets 2064 * 2065 * Input: 2066 * gnp the node to which the command is to be added 2067 * cmd the command to add 2068 * 2069 * Results: 2070 * Always 0 2071 * 2072 * Side Effects: 2073 * A new element is added to the commands list of the node, 2074 * and the node can be marked as a submake node if the command is 2075 * determined to be that. 2076 */ 2077 static int 2078 ParseAddCmd(void *gnp, void *cmd) 2079 { 2080 GNode *gn = (GNode *)gnp; 2081 2082 /* Add to last (ie current) cohort for :: targets */ 2083 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 2084 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 2085 2086 /* if target already supplied, ignore commands */ 2087 if (!(gn->type & OP_HAS_COMMANDS)) { 2088 (void)Lst_AtEnd(gn->commands, cmd); 2089 if (ParseMaybeSubMake(cmd)) 2090 gn->type |= OP_SUBMAKE; 2091 ParseMark(gn); 2092 } else { 2093 #ifdef notyet 2094 /* XXX: We cannot do this until we fix the tree */ 2095 (void)Lst_AtEnd(gn->commands, cmd); 2096 Parse_Error(PARSE_WARNING, 2097 "overriding commands for target \"%s\"; " 2098 "previous commands defined at %s: %d ignored", 2099 gn->name, gn->fname, gn->lineno); 2100 #else 2101 Parse_Error(PARSE_WARNING, 2102 "duplicate script for target \"%s\" ignored", 2103 gn->name); 2104 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 2105 "using previous script for \"%s\" defined here", 2106 gn->name); 2107 #endif 2108 } 2109 return(0); 2110 } 2111 2112 /*- 2113 *----------------------------------------------------------------------- 2114 * ParseHasCommands -- 2115 * Callback procedure for Parse_File when destroying the list of 2116 * targets on the last dependency line. Marks a target as already 2117 * having commands if it does, to keep from having shell commands 2118 * on multiple dependency lines. 2119 * 2120 * Input: 2121 * gnp Node to examine 2122 * 2123 * Results: 2124 * None 2125 * 2126 * Side Effects: 2127 * OP_HAS_COMMANDS may be set for the target. 2128 * 2129 *----------------------------------------------------------------------- 2130 */ 2131 static void 2132 ParseHasCommands(void *gnp) 2133 { 2134 GNode *gn = (GNode *)gnp; 2135 if (!Lst_IsEmpty(gn->commands)) { 2136 gn->type |= OP_HAS_COMMANDS; 2137 } 2138 } 2139 2140 /*- 2141 *----------------------------------------------------------------------- 2142 * Parse_AddIncludeDir -- 2143 * Add a directory to the path searched for included makefiles 2144 * bracketed by double-quotes. Used by functions in main.c 2145 * 2146 * Input: 2147 * dir The name of the directory to add 2148 * 2149 * Results: 2150 * None. 2151 * 2152 * Side Effects: 2153 * The directory is appended to the list. 2154 * 2155 *----------------------------------------------------------------------- 2156 */ 2157 void 2158 Parse_AddIncludeDir(char *dir) 2159 { 2160 (void)Dir_AddDir(parseIncPath, dir); 2161 } 2162 2163 /*- 2164 *--------------------------------------------------------------------- 2165 * ParseDoInclude -- 2166 * Push to another file. 2167 * 2168 * The input is the line minus the `.'. A file spec is a string 2169 * enclosed in <> or "". The former is looked for only in sysIncPath. 2170 * The latter in . and the directories specified by -I command line 2171 * options 2172 * 2173 * Results: 2174 * None 2175 * 2176 * Side Effects: 2177 * A structure is added to the includes Lst and readProc, lineno, 2178 * fname and curFILE are altered for the new file 2179 *--------------------------------------------------------------------- 2180 */ 2181 2182 static void 2183 Parse_include_file(char *file, Boolean isSystem, Boolean depinc, int silent) 2184 { 2185 struct loadedfile *lf; 2186 char *fullname; /* full pathname of file */ 2187 char *newName; 2188 char *prefEnd, *incdir; 2189 int fd; 2190 int i; 2191 2192 /* 2193 * Now we know the file's name and its search path, we attempt to 2194 * find the durn thing. A return of NULL indicates the file don't 2195 * exist. 2196 */ 2197 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2198 2199 if (fullname == NULL && !isSystem) { 2200 /* 2201 * Include files contained in double-quotes are first searched for 2202 * relative to the including file's location. We don't want to 2203 * cd there, of course, so we just tack on the old file's 2204 * leading path components and call Dir_FindFile to see if 2205 * we can locate the beast. 2206 */ 2207 2208 incdir = bmake_strdup(curFile->fname); 2209 prefEnd = strrchr(incdir, '/'); 2210 if (prefEnd != NULL) { 2211 *prefEnd = '\0'; 2212 /* Now do lexical processing of leading "../" on the filename */ 2213 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2214 prefEnd = strrchr(incdir + 1, '/'); 2215 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2216 break; 2217 *prefEnd = '\0'; 2218 } 2219 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2220 fullname = Dir_FindFile(newName, parseIncPath); 2221 if (fullname == NULL) 2222 fullname = Dir_FindFile(newName, dirSearchPath); 2223 free(newName); 2224 } 2225 free(incdir); 2226 2227 if (fullname == NULL) { 2228 /* 2229 * Makefile wasn't found in same directory as included makefile. 2230 * Search for it first on the -I search path, 2231 * then on the .PATH search path, if not found in a -I directory. 2232 * If we have a suffix specific path we should use that. 2233 */ 2234 char *suff; 2235 Lst suffPath = NULL; 2236 2237 if ((suff = strrchr(file, '.'))) { 2238 suffPath = Suff_GetPath(suff); 2239 if (suffPath != NULL) { 2240 fullname = Dir_FindFile(file, suffPath); 2241 } 2242 } 2243 if (fullname == NULL) { 2244 fullname = Dir_FindFile(file, parseIncPath); 2245 if (fullname == NULL) { 2246 fullname = Dir_FindFile(file, dirSearchPath); 2247 } 2248 } 2249 } 2250 } 2251 2252 /* Looking for a system file or file still not found */ 2253 if (fullname == NULL) { 2254 /* 2255 * Look for it on the system path 2256 */ 2257 fullname = Dir_FindFile(file, 2258 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2259 } 2260 2261 if (fullname == NULL) { 2262 if (!silent) 2263 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2264 return; 2265 } 2266 2267 /* Actually open the file... */ 2268 fd = open(fullname, O_RDONLY); 2269 if (fd == -1) { 2270 if (!silent) 2271 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2272 free(fullname); 2273 return; 2274 } 2275 2276 /* load it */ 2277 lf = loadfile(fullname, fd); 2278 2279 ParseSetIncludedFile(); 2280 /* Start reading from this file next */ 2281 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2282 curFile->lf = lf; 2283 if (depinc) 2284 doing_depend = depinc; /* only turn it on */ 2285 } 2286 2287 static void 2288 ParseDoInclude(char *line) 2289 { 2290 char endc; /* the character which ends the file spec */ 2291 char *cp; /* current position in file spec */ 2292 int silent = (*line != 'i') ? 1 : 0; 2293 char *file = &line[7 + silent]; 2294 2295 /* Skip to delimiter character so we know where to look */ 2296 while (*file == ' ' || *file == '\t') 2297 file++; 2298 2299 if (*file != '"' && *file != '<') { 2300 Parse_Error(PARSE_FATAL, 2301 ".include filename must be delimited by '\"' or '<'"); 2302 return; 2303 } 2304 2305 /* 2306 * Set the search path on which to find the include file based on the 2307 * characters which bracket its name. Angle-brackets imply it's 2308 * a system Makefile while double-quotes imply it's a user makefile 2309 */ 2310 if (*file == '<') { 2311 endc = '>'; 2312 } else { 2313 endc = '"'; 2314 } 2315 2316 /* Skip to matching delimiter */ 2317 for (cp = ++file; *cp && *cp != endc; cp++) 2318 continue; 2319 2320 if (*cp != endc) { 2321 Parse_Error(PARSE_FATAL, 2322 "Unclosed %cinclude filename. '%c' expected", 2323 '.', endc); 2324 return; 2325 } 2326 *cp = '\0'; 2327 2328 /* 2329 * Substitute for any variables in the file name before trying to 2330 * find the thing. 2331 */ 2332 file = Var_Subst(NULL, file, VAR_CMD, VARF_WANTRES); 2333 2334 Parse_include_file(file, endc == '>', (*line == 'd'), silent); 2335 free(file); 2336 } 2337 2338 2339 /*- 2340 *--------------------------------------------------------------------- 2341 * ParseSetIncludedFile -- 2342 * Set the .INCLUDEDFROMFILE variable to the contents of .PARSEFILE 2343 * and the .INCLUDEDFROMDIR variable to the contents of .PARSEDIR 2344 * 2345 * Results: 2346 * None 2347 * 2348 * Side Effects: 2349 * The .INCLUDEDFROMFILE variable is overwritten by the contents 2350 * of .PARSEFILE and the .INCLUDEDFROMDIR variable is overwriten 2351 * by the contents of .PARSEDIR 2352 *--------------------------------------------------------------------- 2353 */ 2354 static void 2355 ParseSetIncludedFile(void) 2356 { 2357 char *pf, *fp = NULL; 2358 char *pd, *dp = NULL; 2359 2360 pf = Var_Value(".PARSEFILE", VAR_GLOBAL, &fp); 2361 Var_Set(".INCLUDEDFROMFILE", pf, VAR_GLOBAL, 0); 2362 pd = Var_Value(".PARSEDIR", VAR_GLOBAL, &dp); 2363 Var_Set(".INCLUDEDFROMDIR", pd, VAR_GLOBAL, 0); 2364 2365 if (DEBUG(PARSE)) 2366 fprintf(debug_file, "%s: ${.INCLUDEDFROMDIR} = `%s' " 2367 "${.INCLUDEDFROMFILE} = `%s'\n", __func__, pd, pf); 2368 2369 free(fp); 2370 free(dp); 2371 } 2372 /*- 2373 *--------------------------------------------------------------------- 2374 * ParseSetParseFile -- 2375 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2376 * basename of the given filename 2377 * 2378 * Results: 2379 * None 2380 * 2381 * Side Effects: 2382 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2383 * dirname and basename of the given filename. 2384 *--------------------------------------------------------------------- 2385 */ 2386 static void 2387 ParseSetParseFile(const char *filename) 2388 { 2389 char *slash, *dirname; 2390 const char *pd, *pf; 2391 int len; 2392 2393 slash = strrchr(filename, '/'); 2394 if (slash == NULL) { 2395 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2396 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2397 dirname= NULL; 2398 } else { 2399 len = slash - filename; 2400 dirname = bmake_malloc(len + 1); 2401 memcpy(dirname, filename, len); 2402 dirname[len] = '\0'; 2403 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2404 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2405 } 2406 if (DEBUG(PARSE)) 2407 fprintf(debug_file, "%s: ${.PARSEDIR} = `%s' ${.PARSEFILE} = `%s'\n", 2408 __func__, pd, pf); 2409 free(dirname); 2410 } 2411 2412 /* 2413 * Track the makefiles we read - so makefiles can 2414 * set dependencies on them. 2415 * Avoid adding anything more than once. 2416 */ 2417 2418 static void 2419 ParseTrackInput(const char *name) 2420 { 2421 char *old; 2422 char *ep; 2423 char *fp = NULL; 2424 size_t name_len = strlen(name); 2425 2426 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2427 if (old) { 2428 ep = old + strlen(old) - name_len; 2429 /* does it contain name? */ 2430 for (; old != NULL; old = strchr(old, ' ')) { 2431 if (*old == ' ') 2432 old++; 2433 if (old >= ep) 2434 break; /* cannot contain name */ 2435 if (memcmp(old, name, name_len) == 0 2436 && (old[name_len] == 0 || old[name_len] == ' ')) 2437 goto cleanup; 2438 } 2439 } 2440 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2441 cleanup: 2442 if (fp) { 2443 free(fp); 2444 } 2445 } 2446 2447 2448 /*- 2449 *--------------------------------------------------------------------- 2450 * Parse_setInput -- 2451 * Start Parsing from the given source 2452 * 2453 * Results: 2454 * None 2455 * 2456 * Side Effects: 2457 * A structure is added to the includes Lst and readProc, lineno, 2458 * fname and curFile are altered for the new file 2459 *--------------------------------------------------------------------- 2460 */ 2461 void 2462 Parse_SetInput(const char *name, int line, int fd, 2463 char *(*nextbuf)(void *, size_t *), void *arg) 2464 { 2465 char *buf; 2466 size_t len; 2467 2468 if (name == NULL) 2469 name = curFile->fname; 2470 else 2471 ParseTrackInput(name); 2472 2473 if (DEBUG(PARSE)) 2474 fprintf(debug_file, "%s: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2475 __func__, name, line, fd, nextbuf, arg); 2476 2477 if (fd == -1 && nextbuf == NULL) 2478 /* sanity */ 2479 return; 2480 2481 if (curFile != NULL) 2482 /* Save exiting file info */ 2483 Lst_AtFront(includes, curFile); 2484 2485 /* Allocate and fill in new structure */ 2486 curFile = bmake_malloc(sizeof *curFile); 2487 2488 /* 2489 * Once the previous state has been saved, we can get down to reading 2490 * the new file. We set up the name of the file to be the absolute 2491 * name of the include file so error messages refer to the right 2492 * place. 2493 */ 2494 curFile->fname = bmake_strdup(name); 2495 curFile->lineno = line; 2496 curFile->first_lineno = line; 2497 curFile->nextbuf = nextbuf; 2498 curFile->nextbuf_arg = arg; 2499 curFile->lf = NULL; 2500 curFile->depending = doing_depend; /* restore this on EOF */ 2501 2502 assert(nextbuf != NULL); 2503 2504 /* Get first block of input data */ 2505 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2506 if (buf == NULL) { 2507 /* Was all a waste of time ... */ 2508 if (curFile->fname) 2509 free(curFile->fname); 2510 free(curFile); 2511 return; 2512 } 2513 curFile->P_str = buf; 2514 curFile->P_ptr = buf; 2515 curFile->P_end = buf+len; 2516 2517 curFile->cond_depth = Cond_save_depth(); 2518 ParseSetParseFile(name); 2519 } 2520 2521 #ifdef SYSVINCLUDE 2522 /*- 2523 *--------------------------------------------------------------------- 2524 * ParseTraditionalInclude -- 2525 * Push to another file. 2526 * 2527 * The input is the current line. The file name(s) are 2528 * following the "include". 2529 * 2530 * Results: 2531 * None 2532 * 2533 * Side Effects: 2534 * A structure is added to the includes Lst and readProc, lineno, 2535 * fname and curFILE are altered for the new file 2536 *--------------------------------------------------------------------- 2537 */ 2538 static void 2539 ParseTraditionalInclude(char *line) 2540 { 2541 char *cp; /* current position in file spec */ 2542 int done = 0; 2543 int silent = (line[0] != 'i') ? 1 : 0; 2544 char *file = &line[silent + 7]; 2545 char *all_files; 2546 2547 if (DEBUG(PARSE)) { 2548 fprintf(debug_file, "%s: %s\n", __func__, file); 2549 } 2550 2551 /* 2552 * Skip over whitespace 2553 */ 2554 while (isspace((unsigned char)*file)) 2555 file++; 2556 2557 /* 2558 * Substitute for any variables in the file name before trying to 2559 * find the thing. 2560 */ 2561 all_files = Var_Subst(NULL, file, VAR_CMD, VARF_WANTRES); 2562 2563 if (*file == '\0') { 2564 Parse_Error(PARSE_FATAL, 2565 "Filename missing from \"include\""); 2566 goto out; 2567 } 2568 2569 for (file = all_files; !done; file = cp + 1) { 2570 /* Skip to end of line or next whitespace */ 2571 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2572 continue; 2573 2574 if (*cp) 2575 *cp = '\0'; 2576 else 2577 done = 1; 2578 2579 Parse_include_file(file, FALSE, FALSE, silent); 2580 } 2581 out: 2582 free(all_files); 2583 } 2584 #endif 2585 2586 #ifdef GMAKEEXPORT 2587 /*- 2588 *--------------------------------------------------------------------- 2589 * ParseGmakeExport -- 2590 * Parse export <variable>=<value> 2591 * 2592 * And set the environment with it. 2593 * 2594 * Results: 2595 * None 2596 * 2597 * Side Effects: 2598 * None 2599 *--------------------------------------------------------------------- 2600 */ 2601 static void 2602 ParseGmakeExport(char *line) 2603 { 2604 char *variable = &line[6]; 2605 char *value; 2606 2607 if (DEBUG(PARSE)) { 2608 fprintf(debug_file, "%s: %s\n", __func__, variable); 2609 } 2610 2611 /* 2612 * Skip over whitespace 2613 */ 2614 while (isspace((unsigned char)*variable)) 2615 variable++; 2616 2617 for (value = variable; *value && *value != '='; value++) 2618 continue; 2619 2620 if (*value != '=') { 2621 Parse_Error(PARSE_FATAL, 2622 "Variable/Value missing from \"export\""); 2623 return; 2624 } 2625 *value++ = '\0'; /* terminate variable */ 2626 2627 /* 2628 * Expand the value before putting it in the environment. 2629 */ 2630 value = Var_Subst(NULL, value, VAR_CMD, VARF_WANTRES); 2631 setenv(variable, value, 1); 2632 free(value); 2633 } 2634 #endif 2635 2636 /*- 2637 *--------------------------------------------------------------------- 2638 * ParseEOF -- 2639 * Called when EOF is reached in the current file. If we were reading 2640 * an include file, the includes stack is popped and things set up 2641 * to go back to reading the previous file at the previous location. 2642 * 2643 * Results: 2644 * CONTINUE if there's more to do. DONE if not. 2645 * 2646 * Side Effects: 2647 * The old curFILE, is closed. The includes list is shortened. 2648 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2649 *--------------------------------------------------------------------- 2650 */ 2651 static int 2652 ParseEOF(void) 2653 { 2654 char *ptr; 2655 size_t len; 2656 2657 assert(curFile->nextbuf != NULL); 2658 2659 doing_depend = curFile->depending; /* restore this */ 2660 /* get next input buffer, if any */ 2661 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2662 curFile->P_ptr = ptr; 2663 curFile->P_str = ptr; 2664 curFile->P_end = ptr + len; 2665 curFile->lineno = curFile->first_lineno; 2666 if (ptr != NULL) { 2667 /* Iterate again */ 2668 return CONTINUE; 2669 } 2670 2671 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2672 Cond_restore_depth(curFile->cond_depth); 2673 2674 if (curFile->lf != NULL) { 2675 loadedfile_destroy(curFile->lf); 2676 curFile->lf = NULL; 2677 } 2678 2679 /* Dispose of curFile info */ 2680 /* Leak curFile->fname because all the gnodes have pointers to it */ 2681 free(curFile->P_str); 2682 free(curFile); 2683 2684 curFile = Lst_DeQueue(includes); 2685 2686 if (curFile == NULL) { 2687 /* We've run out of input */ 2688 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2689 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2690 Var_Delete(".INCLUDEDFROMDIR", VAR_GLOBAL); 2691 Var_Delete(".INCLUDEDFROMFILE", VAR_GLOBAL); 2692 return DONE; 2693 } 2694 2695 if (DEBUG(PARSE)) 2696 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2697 curFile->fname, curFile->lineno); 2698 2699 /* Restore the PARSEDIR/PARSEFILE variables */ 2700 ParseSetParseFile(curFile->fname); 2701 return (CONTINUE); 2702 } 2703 2704 #define PARSE_RAW 1 2705 #define PARSE_SKIP 2 2706 2707 static char * 2708 ParseGetLine(int flags, int *length) 2709 { 2710 IFile *cf = curFile; 2711 char *ptr; 2712 char ch; 2713 char *line; 2714 char *line_end; 2715 char *escaped; 2716 char *comment; 2717 char *tp; 2718 2719 /* Loop through blank lines and comment lines */ 2720 for (;;) { 2721 cf->lineno++; 2722 line = cf->P_ptr; 2723 ptr = line; 2724 line_end = line; 2725 escaped = NULL; 2726 comment = NULL; 2727 for (;;) { 2728 if (cf->P_end != NULL && ptr == cf->P_end) { 2729 /* end of buffer */ 2730 ch = 0; 2731 break; 2732 } 2733 ch = *ptr; 2734 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2735 if (cf->P_end == NULL) 2736 /* End of string (aka for loop) data */ 2737 break; 2738 /* see if there is more we can parse */ 2739 while (ptr++ < cf->P_end) { 2740 if ((ch = *ptr) == '\n') { 2741 if (ptr > line && ptr[-1] == '\\') 2742 continue; 2743 Parse_Error(PARSE_WARNING, 2744 "Zero byte read from file, skipping rest of line."); 2745 break; 2746 } 2747 } 2748 if (cf->nextbuf != NULL) { 2749 /* 2750 * End of this buffer; return EOF and outer logic 2751 * will get the next one. (eww) 2752 */ 2753 break; 2754 } 2755 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2756 return NULL; 2757 } 2758 2759 if (ch == '\\') { 2760 /* Don't treat next character as special, remember first one */ 2761 if (escaped == NULL) 2762 escaped = ptr; 2763 if (ptr[1] == '\n') 2764 cf->lineno++; 2765 ptr += 2; 2766 line_end = ptr; 2767 continue; 2768 } 2769 if (ch == '#' && comment == NULL) { 2770 /* Remember first '#' for comment stripping */ 2771 /* Unless previous char was '[', as in modifier :[#] */ 2772 if (!(ptr > line && ptr[-1] == '[')) 2773 comment = line_end; 2774 } 2775 ptr++; 2776 if (ch == '\n') 2777 break; 2778 if (!isspace((unsigned char)ch)) 2779 /* We are not interested in trailing whitespace */ 2780 line_end = ptr; 2781 } 2782 2783 /* Save next 'to be processed' location */ 2784 cf->P_ptr = ptr; 2785 2786 /* Check we have a non-comment, non-blank line */ 2787 if (line_end == line || comment == line) { 2788 if (ch == 0) 2789 /* At end of file */ 2790 return NULL; 2791 /* Parse another line */ 2792 continue; 2793 } 2794 2795 /* We now have a line of data */ 2796 *line_end = 0; 2797 2798 if (flags & PARSE_RAW) { 2799 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2800 *length = line_end - line; 2801 return line; 2802 } 2803 2804 if (flags & PARSE_SKIP) { 2805 /* Completely ignore non-directives */ 2806 if (line[0] != '.') 2807 continue; 2808 /* We could do more of the .else/.elif/.endif checks here */ 2809 } 2810 break; 2811 } 2812 2813 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2814 if (comment != NULL && line[0] != '\t') { 2815 line_end = comment; 2816 *line_end = 0; 2817 } 2818 2819 /* If we didn't see a '\\' then the in-situ data is fine */ 2820 if (escaped == NULL) { 2821 *length = line_end - line; 2822 return line; 2823 } 2824 2825 /* Remove escapes from '\n' and '#' */ 2826 tp = ptr = escaped; 2827 escaped = line; 2828 for (; ; *tp++ = ch) { 2829 ch = *ptr++; 2830 if (ch != '\\') { 2831 if (ch == 0) 2832 break; 2833 continue; 2834 } 2835 2836 ch = *ptr++; 2837 if (ch == 0) { 2838 /* Delete '\\' at end of buffer */ 2839 tp--; 2840 break; 2841 } 2842 2843 if (ch == '#' && line[0] != '\t') 2844 /* Delete '\\' from before '#' on non-command lines */ 2845 continue; 2846 2847 if (ch != '\n') { 2848 /* Leave '\\' in buffer for later */ 2849 *tp++ = '\\'; 2850 /* Make sure we don't delete an escaped ' ' from the line end */ 2851 escaped = tp + 1; 2852 continue; 2853 } 2854 2855 /* Escaped '\n' replace following whitespace with a single ' ' */ 2856 while (ptr[0] == ' ' || ptr[0] == '\t') 2857 ptr++; 2858 ch = ' '; 2859 } 2860 2861 /* Delete any trailing spaces - eg from empty continuations */ 2862 while (tp > escaped && isspace((unsigned char)tp[-1])) 2863 tp--; 2864 2865 *tp = 0; 2866 *length = tp - line; 2867 return line; 2868 } 2869 2870 /*- 2871 *--------------------------------------------------------------------- 2872 * ParseReadLine -- 2873 * Read an entire line from the input file. Called only by Parse_File. 2874 * 2875 * Results: 2876 * A line w/o its newline 2877 * 2878 * Side Effects: 2879 * Only those associated with reading a character 2880 *--------------------------------------------------------------------- 2881 */ 2882 static char * 2883 ParseReadLine(void) 2884 { 2885 char *line; /* Result */ 2886 int lineLength; /* Length of result */ 2887 int lineno; /* Saved line # */ 2888 int rval; 2889 2890 for (;;) { 2891 line = ParseGetLine(0, &lineLength); 2892 if (line == NULL) 2893 return NULL; 2894 2895 if (line[0] != '.') 2896 return line; 2897 2898 /* 2899 * The line might be a conditional. Ask the conditional module 2900 * about it and act accordingly 2901 */ 2902 switch (Cond_Eval(line)) { 2903 case COND_SKIP: 2904 /* Skip to next conditional that evaluates to COND_PARSE. */ 2905 do { 2906 line = ParseGetLine(PARSE_SKIP, &lineLength); 2907 } while (line && Cond_Eval(line) != COND_PARSE); 2908 if (line == NULL) 2909 break; 2910 continue; 2911 case COND_PARSE: 2912 continue; 2913 case COND_INVALID: /* Not a conditional line */ 2914 /* Check for .for loops */ 2915 rval = For_Eval(line); 2916 if (rval == 0) 2917 /* Not a .for line */ 2918 break; 2919 if (rval < 0) 2920 /* Syntax error - error printed, ignore line */ 2921 continue; 2922 /* Start of a .for loop */ 2923 lineno = curFile->lineno; 2924 /* Accumulate loop lines until matching .endfor */ 2925 do { 2926 line = ParseGetLine(PARSE_RAW, &lineLength); 2927 if (line == NULL) { 2928 Parse_Error(PARSE_FATAL, 2929 "Unexpected end of file in for loop."); 2930 break; 2931 } 2932 } while (For_Accum(line)); 2933 /* Stash each iteration as a new 'input file' */ 2934 For_Run(lineno); 2935 /* Read next line from for-loop buffer */ 2936 continue; 2937 } 2938 return (line); 2939 } 2940 } 2941 2942 /*- 2943 *----------------------------------------------------------------------- 2944 * ParseFinishLine -- 2945 * Handle the end of a dependency group. 2946 * 2947 * Results: 2948 * Nothing. 2949 * 2950 * Side Effects: 2951 * inLine set FALSE. 'targets' list destroyed. 2952 * 2953 *----------------------------------------------------------------------- 2954 */ 2955 static void 2956 ParseFinishLine(void) 2957 { 2958 if (inLine) { 2959 Lst_ForEach(targets, Suff_EndTransform, NULL); 2960 Lst_Destroy(targets, ParseHasCommands); 2961 targets = NULL; 2962 inLine = FALSE; 2963 } 2964 } 2965 2966 2967 /*- 2968 *--------------------------------------------------------------------- 2969 * Parse_File -- 2970 * Parse a file into its component parts, incorporating it into the 2971 * current dependency graph. This is the main function and controls 2972 * almost every other function in this module 2973 * 2974 * Input: 2975 * name the name of the file being read 2976 * fd Open file to makefile to parse 2977 * 2978 * Results: 2979 * None 2980 * 2981 * Side Effects: 2982 * closes fd. 2983 * Loads. Nodes are added to the list of all targets, nodes and links 2984 * are added to the dependency graph. etc. etc. etc. 2985 *--------------------------------------------------------------------- 2986 */ 2987 void 2988 Parse_File(const char *name, int fd) 2989 { 2990 char *cp; /* pointer into the line */ 2991 char *line; /* the line we're working on */ 2992 struct loadedfile *lf; 2993 2994 lf = loadfile(name, fd); 2995 2996 inLine = FALSE; 2997 fatals = 0; 2998 2999 if (name == NULL) { 3000 name = "(stdin)"; 3001 } 3002 3003 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 3004 curFile->lf = lf; 3005 3006 do { 3007 for (; (line = ParseReadLine()) != NULL; ) { 3008 if (DEBUG(PARSE)) 3009 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 3010 curFile->lineno, line); 3011 if (*line == '.') { 3012 /* 3013 * Lines that begin with the special character may be 3014 * include or undef directives. 3015 * On the other hand they can be suffix rules (.c.o: ...) 3016 * or just dependencies for filenames that start '.'. 3017 */ 3018 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 3019 continue; 3020 } 3021 if (strncmp(cp, "include", 7) == 0 || 3022 ((cp[0] == 'd' || cp[0] == 's' || cp[0] == '-') && 3023 strncmp(&cp[1], "include", 7) == 0)) { 3024 ParseDoInclude(cp); 3025 continue; 3026 } 3027 if (strncmp(cp, "undef", 5) == 0) { 3028 char *cp2; 3029 for (cp += 5; isspace((unsigned char) *cp); cp++) 3030 continue; 3031 for (cp2 = cp; !isspace((unsigned char) *cp2) && 3032 (*cp2 != '\0'); cp2++) 3033 continue; 3034 *cp2 = '\0'; 3035 Var_Delete(cp, VAR_GLOBAL); 3036 continue; 3037 } else if (strncmp(cp, "export", 6) == 0) { 3038 for (cp += 6; isspace((unsigned char) *cp); cp++) 3039 continue; 3040 Var_Export(cp, 1); 3041 continue; 3042 } else if (strncmp(cp, "unexport", 8) == 0) { 3043 Var_UnExport(cp); 3044 continue; 3045 } else if (strncmp(cp, "info", 4) == 0 || 3046 strncmp(cp, "error", 5) == 0 || 3047 strncmp(cp, "warning", 7) == 0) { 3048 if (ParseMessage(cp)) 3049 continue; 3050 } 3051 } 3052 3053 if (*line == '\t') { 3054 /* 3055 * If a line starts with a tab, it can only hope to be 3056 * a creation command. 3057 */ 3058 cp = line + 1; 3059 shellCommand: 3060 for (; isspace ((unsigned char)*cp); cp++) { 3061 continue; 3062 } 3063 if (*cp) { 3064 if (!inLine) 3065 Parse_Error(PARSE_FATAL, 3066 "Unassociated shell command \"%s\"", 3067 cp); 3068 /* 3069 * So long as it's not a blank line and we're actually 3070 * in a dependency spec, add the command to the list of 3071 * commands of all targets in the dependency spec 3072 */ 3073 if (targets) { 3074 cp = bmake_strdup(cp); 3075 Lst_ForEach(targets, ParseAddCmd, cp); 3076 #ifdef CLEANUP 3077 Lst_AtEnd(targCmds, cp); 3078 #endif 3079 } 3080 } 3081 continue; 3082 } 3083 3084 #ifdef SYSVINCLUDE 3085 if (((strncmp(line, "include", 7) == 0 && 3086 isspace((unsigned char) line[7])) || 3087 ((line[0] == 's' || line[0] == '-') && 3088 strncmp(&line[1], "include", 7) == 0 && 3089 isspace((unsigned char) line[8]))) && 3090 strchr(line, ':') == NULL) { 3091 /* 3092 * It's an S3/S5-style "include". 3093 */ 3094 ParseTraditionalInclude(line); 3095 continue; 3096 } 3097 #endif 3098 #ifdef GMAKEEXPORT 3099 if (strncmp(line, "export", 6) == 0 && 3100 isspace((unsigned char) line[6]) && 3101 strchr(line, ':') == NULL) { 3102 /* 3103 * It's a Gmake "export". 3104 */ 3105 ParseGmakeExport(line); 3106 continue; 3107 } 3108 #endif 3109 if (Parse_IsVar(line)) { 3110 ParseFinishLine(); 3111 Parse_DoVar(line, VAR_GLOBAL); 3112 continue; 3113 } 3114 3115 #ifndef POSIX 3116 /* 3117 * To make life easier on novices, if the line is indented we 3118 * first make sure the line has a dependency operator in it. 3119 * If it doesn't have an operator and we're in a dependency 3120 * line's script, we assume it's actually a shell command 3121 * and add it to the current list of targets. 3122 */ 3123 cp = line; 3124 if (isspace((unsigned char) line[0])) { 3125 while ((*cp != '\0') && isspace((unsigned char) *cp)) 3126 cp++; 3127 while (*cp && (ParseIsEscaped(line, cp) || 3128 (*cp != ':') && (*cp != '!'))) { 3129 cp++; 3130 } 3131 if (*cp == '\0') { 3132 if (inLine) { 3133 Parse_Error(PARSE_WARNING, 3134 "Shell command needs a leading tab"); 3135 goto shellCommand; 3136 } 3137 } 3138 } 3139 #endif 3140 ParseFinishLine(); 3141 3142 /* 3143 * For some reason - probably to make the parser impossible - 3144 * a ';' can be used to separate commands from dependencies. 3145 * Attempt to avoid ';' inside substitution patterns. 3146 */ 3147 { 3148 int level = 0; 3149 3150 for (cp = line; *cp != 0; cp++) { 3151 if (*cp == '\\' && cp[1] != 0) { 3152 cp++; 3153 continue; 3154 } 3155 if (*cp == '$' && 3156 (cp[1] == '(' || cp[1] == '{')) { 3157 level++; 3158 continue; 3159 } 3160 if (level > 0) { 3161 if (*cp == ')' || *cp == '}') { 3162 level--; 3163 continue; 3164 } 3165 } else if (*cp == ';') { 3166 break; 3167 } 3168 } 3169 } 3170 if (*cp != 0) 3171 /* Terminate the dependency list at the ';' */ 3172 *cp++ = 0; 3173 else 3174 cp = NULL; 3175 3176 /* 3177 * We now know it's a dependency line so it needs to have all 3178 * variables expanded before being parsed. Tell the variable 3179 * module to complain if some variable is undefined... 3180 */ 3181 line = Var_Subst(NULL, line, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES); 3182 3183 /* 3184 * Need a non-circular list for the target nodes 3185 */ 3186 if (targets) 3187 Lst_Destroy(targets, NULL); 3188 3189 targets = Lst_Init(FALSE); 3190 inLine = TRUE; 3191 3192 ParseDoDependency(line); 3193 free(line); 3194 3195 /* If there were commands after a ';', add them now */ 3196 if (cp != NULL) { 3197 goto shellCommand; 3198 } 3199 } 3200 /* 3201 * Reached EOF, but it may be just EOF of an include file... 3202 */ 3203 } while (ParseEOF() == CONTINUE); 3204 3205 if (fatals) { 3206 (void)fflush(stdout); 3207 (void)fprintf(stderr, 3208 "%s: Fatal errors encountered -- cannot continue", 3209 progname); 3210 PrintOnError(NULL, NULL); 3211 exit(1); 3212 } 3213 } 3214 3215 /*- 3216 *--------------------------------------------------------------------- 3217 * Parse_Init -- 3218 * initialize the parsing module 3219 * 3220 * Results: 3221 * none 3222 * 3223 * Side Effects: 3224 * the parseIncPath list is initialized... 3225 *--------------------------------------------------------------------- 3226 */ 3227 void 3228 Parse_Init(void) 3229 { 3230 mainNode = NULL; 3231 parseIncPath = Lst_Init(FALSE); 3232 sysIncPath = Lst_Init(FALSE); 3233 defIncPath = Lst_Init(FALSE); 3234 includes = Lst_Init(FALSE); 3235 #ifdef CLEANUP 3236 targCmds = Lst_Init(FALSE); 3237 #endif 3238 } 3239 3240 void 3241 Parse_End(void) 3242 { 3243 #ifdef CLEANUP 3244 Lst_Destroy(targCmds, (FreeProc *)free); 3245 if (targets) 3246 Lst_Destroy(targets, NULL); 3247 Lst_Destroy(defIncPath, Dir_Destroy); 3248 Lst_Destroy(sysIncPath, Dir_Destroy); 3249 Lst_Destroy(parseIncPath, Dir_Destroy); 3250 Lst_Destroy(includes, NULL); /* Should be empty now */ 3251 #endif 3252 } 3253 3254 3255 /*- 3256 *----------------------------------------------------------------------- 3257 * Parse_MainName -- 3258 * Return a Lst of the main target to create for main()'s sake. If 3259 * no such target exists, we Punt with an obnoxious error message. 3260 * 3261 * Results: 3262 * A Lst of the single node to create. 3263 * 3264 * Side Effects: 3265 * None. 3266 * 3267 *----------------------------------------------------------------------- 3268 */ 3269 Lst 3270 Parse_MainName(void) 3271 { 3272 Lst mainList; /* result list */ 3273 3274 mainList = Lst_Init(FALSE); 3275 3276 if (mainNode == NULL) { 3277 Punt("no target to make."); 3278 /*NOTREACHED*/ 3279 } else if (mainNode->type & OP_DOUBLEDEP) { 3280 (void)Lst_AtEnd(mainList, mainNode); 3281 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3282 } 3283 else 3284 (void)Lst_AtEnd(mainList, mainNode); 3285 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3286 return (mainList); 3287 } 3288 3289 /*- 3290 *----------------------------------------------------------------------- 3291 * ParseMark -- 3292 * Add the filename and lineno to the GNode so that we remember 3293 * where it was first defined. 3294 * 3295 * Side Effects: 3296 * None. 3297 * 3298 *----------------------------------------------------------------------- 3299 */ 3300 static void 3301 ParseMark(GNode *gn) 3302 { 3303 gn->fname = curFile->fname; 3304 gn->lineno = curFile->lineno; 3305 } 3306