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