parse.c revision 1.227
1 /* $NetBSD: parse.c,v 1.227 2018/02/22 01:59:28 sjg Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: parse.c,v 1.227 2018/02/22 01:59:28 sjg Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 #if 0 77 static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94"; 78 #else 79 __RCSID("$NetBSD: parse.c,v 1.227 2018/02/22 01:59:28 sjg Exp $"); 80 #endif 81 #endif /* not lint */ 82 #endif 83 84 /*- 85 * parse.c -- 86 * Functions to parse a makefile. 87 * 88 * One function, Parse_Init, must be called before any functions 89 * in this module are used. After that, the function Parse_File is the 90 * main entry point and controls most of the other functions in this 91 * module. 92 * 93 * Most important structures are kept in Lsts. Directories for 94 * the .include "..." function are kept in the 'parseIncPath' Lst, while 95 * those for the .include <...> are kept in the 'sysIncPath' Lst. The 96 * targets currently being defined are kept in the 'targets' Lst. 97 * 98 * The variables 'fname' and 'lineno' are used to track the name 99 * of the current file and the line number in that file so that error 100 * messages can be more meaningful. 101 * 102 * Interface: 103 * Parse_Init Initialization function which must be 104 * called before anything else in this module 105 * is used. 106 * 107 * Parse_End Cleanup the module 108 * 109 * Parse_File Function used to parse a makefile. It must 110 * be given the name of the file, which should 111 * already have been opened, and a function 112 * to call to read a character from the file. 113 * 114 * Parse_IsVar Returns TRUE if the given line is a 115 * variable assignment. Used by MainParseArgs 116 * to determine if an argument is a target 117 * or a variable assignment. Used internally 118 * for pretty much the same thing... 119 * 120 * Parse_Error Function called when an error occurs in 121 * parsing. Used by the variable and 122 * conditional modules. 123 * Parse_MainName Returns a Lst of the main target to create. 124 */ 125 126 #include <sys/types.h> 127 #include <sys/mman.h> 128 #include <sys/stat.h> 129 #include <assert.h> 130 #include <ctype.h> 131 #include <errno.h> 132 #include <stdarg.h> 133 #include <stdio.h> 134 #include <stdint.h> 135 136 #ifndef MAP_FILE 137 #define MAP_FILE 0 138 #endif 139 #ifndef MAP_COPY 140 #define MAP_COPY MAP_PRIVATE 141 #endif 142 143 #include "make.h" 144 #include "hash.h" 145 #include "dir.h" 146 #include "job.h" 147 #include "buf.h" 148 #include "pathnames.h" 149 150 //////////////////////////////////////////////////////////// 151 // types and constants 152 153 /* 154 * Structure for a file being read ("included file") 155 */ 156 typedef struct IFile { 157 char *fname; /* name of file */ 158 int lineno; /* current line number in file */ 159 int first_lineno; /* line number of start of text */ 160 int cond_depth; /* 'if' nesting when file opened */ 161 Boolean depending; /* state of doing_depend on EOF */ 162 char *P_str; /* point to base of string buffer */ 163 char *P_ptr; /* point to next char of string buffer */ 164 char *P_end; /* point to the end of string buffer */ 165 char *(*nextbuf)(void *, size_t *); /* Function to get more data */ 166 void *nextbuf_arg; /* Opaque arg for nextbuf() */ 167 struct loadedfile *lf; /* loadedfile object, if any */ 168 } IFile; 169 170 171 /* 172 * These values are returned by ParseEOF to tell Parse_File whether to 173 * CONTINUE parsing, i.e. it had only reached the end of an include file, 174 * or if it's DONE. 175 */ 176 #define CONTINUE 1 177 #define DONE 0 178 179 /* 180 * Tokens for target attributes 181 */ 182 typedef enum { 183 Begin, /* .BEGIN */ 184 Default, /* .DEFAULT */ 185 DeleteOnError, /* .DELETE_ON_ERROR */ 186 End, /* .END */ 187 dotError, /* .ERROR */ 188 Ignore, /* .IGNORE */ 189 Includes, /* .INCLUDES */ 190 Interrupt, /* .INTERRUPT */ 191 Libs, /* .LIBS */ 192 Meta, /* .META */ 193 MFlags, /* .MFLAGS or .MAKEFLAGS */ 194 Main, /* .MAIN and we don't have anything user-specified to 195 * make */ 196 NoExport, /* .NOEXPORT */ 197 NoMeta, /* .NOMETA */ 198 NoMetaCmp, /* .NOMETA_CMP */ 199 NoPath, /* .NOPATH */ 200 Not, /* Not special */ 201 NotParallel, /* .NOTPARALLEL */ 202 Null, /* .NULL */ 203 ExObjdir, /* .OBJDIR */ 204 Order, /* .ORDER */ 205 Parallel, /* .PARALLEL */ 206 ExPath, /* .PATH */ 207 Phony, /* .PHONY */ 208 #ifdef POSIX 209 Posix, /* .POSIX */ 210 #endif 211 Precious, /* .PRECIOUS */ 212 ExShell, /* .SHELL */ 213 Silent, /* .SILENT */ 214 SingleShell, /* .SINGLESHELL */ 215 Stale, /* .STALE */ 216 Suffixes, /* .SUFFIXES */ 217 Wait, /* .WAIT */ 218 Attribute /* Generic attribute */ 219 } ParseSpecial; 220 221 /* 222 * Other tokens 223 */ 224 #define LPAREN '(' 225 #define RPAREN ')' 226 227 228 //////////////////////////////////////////////////////////// 229 // result data 230 231 /* 232 * The main target to create. This is the first target on the first 233 * dependency line in the first makefile. 234 */ 235 static GNode *mainNode; 236 237 //////////////////////////////////////////////////////////// 238 // eval state 239 240 /* targets we're working on */ 241 static Lst targets; 242 243 #ifdef CLEANUP 244 /* command lines for targets */ 245 static Lst targCmds; 246 #endif 247 248 /* 249 * specType contains the SPECial TYPE of the current target. It is 250 * Not if the target is unspecial. If it *is* special, however, the children 251 * are linked as children of the parent but not vice versa. This variable is 252 * set in ParseDoDependency 253 */ 254 static ParseSpecial specType; 255 256 /* 257 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER 258 * seen, then set to each successive source on the line. 259 */ 260 static GNode *predecessor; 261 262 //////////////////////////////////////////////////////////// 263 // parser state 264 265 /* true if currently in a dependency line or its commands */ 266 static Boolean inLine; 267 268 /* number of fatal errors */ 269 static int fatals = 0; 270 271 /* 272 * Variables for doing includes 273 */ 274 275 /* current file being read */ 276 static IFile *curFile; 277 278 /* stack of IFiles generated by .includes */ 279 static Lst includes; 280 281 /* include paths (lists of directories) */ 282 Lst parseIncPath; /* dirs for "..." includes */ 283 Lst sysIncPath; /* dirs for <...> includes */ 284 Lst defIncPath; /* default for sysIncPath */ 285 286 //////////////////////////////////////////////////////////// 287 // parser tables 288 289 /* 290 * The parseKeywords table is searched using binary search when deciding 291 * if a target or source is special. The 'spec' field is the ParseSpecial 292 * type of the keyword ("Not" if the keyword isn't special as a target) while 293 * the 'op' field is the operator to apply to the list of targets if the 294 * keyword is used as a source ("0" if the keyword isn't special as a source) 295 */ 296 static const struct { 297 const char *name; /* Name of keyword */ 298 ParseSpecial spec; /* Type when used as a target */ 299 int op; /* Operator when used as a source */ 300 } parseKeywords[] = { 301 { ".BEGIN", Begin, 0 }, 302 { ".DEFAULT", Default, 0 }, 303 { ".DELETE_ON_ERROR", DeleteOnError, 0 }, 304 { ".END", End, 0 }, 305 { ".ERROR", dotError, 0 }, 306 { ".EXEC", Attribute, OP_EXEC }, 307 { ".IGNORE", Ignore, OP_IGNORE }, 308 { ".INCLUDES", Includes, 0 }, 309 { ".INTERRUPT", Interrupt, 0 }, 310 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 311 { ".JOIN", Attribute, OP_JOIN }, 312 { ".LIBS", Libs, 0 }, 313 { ".MADE", Attribute, OP_MADE }, 314 { ".MAIN", Main, 0 }, 315 { ".MAKE", Attribute, OP_MAKE }, 316 { ".MAKEFLAGS", MFlags, 0 }, 317 { ".META", Meta, OP_META }, 318 { ".MFLAGS", MFlags, 0 }, 319 { ".NOMETA", NoMeta, OP_NOMETA }, 320 { ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP }, 321 { ".NOPATH", NoPath, OP_NOPATH }, 322 { ".NOTMAIN", Attribute, OP_NOTMAIN }, 323 { ".NOTPARALLEL", NotParallel, 0 }, 324 { ".NO_PARALLEL", NotParallel, 0 }, 325 { ".NULL", Null, 0 }, 326 { ".OBJDIR", ExObjdir, 0 }, 327 { ".OPTIONAL", Attribute, OP_OPTIONAL }, 328 { ".ORDER", Order, 0 }, 329 { ".PARALLEL", Parallel, 0 }, 330 { ".PATH", ExPath, 0 }, 331 { ".PHONY", Phony, OP_PHONY }, 332 #ifdef POSIX 333 { ".POSIX", Posix, 0 }, 334 #endif 335 { ".PRECIOUS", Precious, OP_PRECIOUS }, 336 { ".RECURSIVE", Attribute, OP_MAKE }, 337 { ".SHELL", ExShell, 0 }, 338 { ".SILENT", Silent, OP_SILENT }, 339 { ".SINGLESHELL", SingleShell, 0 }, 340 { ".STALE", Stale, 0 }, 341 { ".SUFFIXES", Suffixes, 0 }, 342 { ".USE", Attribute, OP_USE }, 343 { ".USEBEFORE", Attribute, OP_USEBEFORE }, 344 { ".WAIT", Wait, 0 }, 345 }; 346 347 //////////////////////////////////////////////////////////// 348 // local functions 349 350 static int ParseIsEscaped(const char *, const char *); 351 static void ParseErrorInternal(const char *, size_t, int, const char *, ...) 352 MAKE_ATTR_PRINTFLIKE(4,5); 353 static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list) 354 MAKE_ATTR_PRINTFLIKE(5, 0); 355 static int ParseFindKeyword(const char *); 356 static int ParseLinkSrc(void *, void *); 357 static int ParseDoOp(void *, void *); 358 static void ParseDoSrc(int, const char *); 359 static int ParseFindMain(void *, void *); 360 static int ParseAddDir(void *, void *); 361 static int ParseClearPath(void *, void *); 362 static void ParseDoDependency(char *); 363 static int ParseAddCmd(void *, void *); 364 static void ParseHasCommands(void *); 365 static void ParseDoInclude(char *); 366 static void ParseSetParseFile(const char *); 367 static void ParseSetIncludedFile(void); 368 #ifdef SYSVINCLUDE 369 static void ParseTraditionalInclude(char *); 370 #endif 371 #ifdef GMAKEEXPORT 372 static void ParseGmakeExport(char *); 373 #endif 374 static int ParseEOF(void); 375 static char *ParseReadLine(void); 376 static void ParseFinishLine(void); 377 static void ParseMark(GNode *); 378 379 //////////////////////////////////////////////////////////// 380 // file loader 381 382 struct loadedfile { 383 const char *path; /* name, for error reports */ 384 char *buf; /* contents buffer */ 385 size_t len; /* length of contents */ 386 size_t maplen; /* length of mmap area, or 0 */ 387 Boolean used; /* XXX: have we used the data yet */ 388 }; 389 390 /* 391 * Constructor/destructor for loadedfile 392 */ 393 static struct loadedfile * 394 loadedfile_create(const char *path) 395 { 396 struct loadedfile *lf; 397 398 lf = bmake_malloc(sizeof(*lf)); 399 lf->path = (path == NULL ? "(stdin)" : path); 400 lf->buf = NULL; 401 lf->len = 0; 402 lf->maplen = 0; 403 lf->used = FALSE; 404 return lf; 405 } 406 407 static void 408 loadedfile_destroy(struct loadedfile *lf) 409 { 410 if (lf->buf != NULL) { 411 if (lf->maplen > 0) { 412 munmap(lf->buf, lf->maplen); 413 } else { 414 free(lf->buf); 415 } 416 } 417 free(lf); 418 } 419 420 /* 421 * nextbuf() operation for loadedfile, as needed by the weird and twisted 422 * logic below. Once that's cleaned up, we can get rid of lf->used... 423 */ 424 static char * 425 loadedfile_nextbuf(void *x, size_t *len) 426 { 427 struct loadedfile *lf = x; 428 429 if (lf->used) { 430 return NULL; 431 } 432 lf->used = TRUE; 433 *len = lf->len; 434 return lf->buf; 435 } 436 437 /* 438 * Try to get the size of a file. 439 */ 440 static ReturnStatus 441 load_getsize(int fd, size_t *ret) 442 { 443 struct stat st; 444 445 if (fstat(fd, &st) < 0) { 446 return FAILURE; 447 } 448 449 if (!S_ISREG(st.st_mode)) { 450 return FAILURE; 451 } 452 453 /* 454 * st_size is an off_t, which is 64 bits signed; *ret is 455 * size_t, which might be 32 bits unsigned or 64 bits 456 * unsigned. Rather than being elaborate, just punt on 457 * files that are more than 2^31 bytes. We should never 458 * see a makefile that size in practice... 459 * 460 * While we're at it reject negative sizes too, just in case. 461 */ 462 if (st.st_size < 0 || st.st_size > 0x7fffffff) { 463 return FAILURE; 464 } 465 466 *ret = (size_t) st.st_size; 467 return SUCCESS; 468 } 469 470 /* 471 * Read in a file. 472 * 473 * Until the path search logic can be moved under here instead of 474 * being in the caller in another source file, we need to have the fd 475 * passed in already open. Bleh. 476 * 477 * If the path is NULL use stdin and (to insure against fd leaks) 478 * assert that the caller passed in -1. 479 */ 480 static struct loadedfile * 481 loadfile(const char *path, int fd) 482 { 483 struct loadedfile *lf; 484 static long pagesize = 0; 485 ssize_t result; 486 size_t bufpos; 487 488 lf = loadedfile_create(path); 489 490 if (path == NULL) { 491 assert(fd == -1); 492 fd = STDIN_FILENO; 493 } else { 494 #if 0 /* notyet */ 495 fd = open(path, O_RDONLY); 496 if (fd < 0) { 497 ... 498 Error("%s: %s", path, strerror(errno)); 499 exit(1); 500 } 501 #endif 502 } 503 504 if (load_getsize(fd, &lf->len) == SUCCESS) { 505 /* found a size, try mmap */ 506 if (pagesize == 0) 507 pagesize = sysconf(_SC_PAGESIZE); 508 if (pagesize <= 0) { 509 pagesize = 0x1000; 510 } 511 /* round size up to a page */ 512 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 513 514 /* 515 * XXX hack for dealing with empty files; remove when 516 * we're no longer limited by interfacing to the old 517 * logic elsewhere in this file. 518 */ 519 if (lf->maplen == 0) { 520 lf->maplen = pagesize; 521 } 522 523 /* 524 * FUTURE: remove PROT_WRITE when the parser no longer 525 * needs to scribble on the input. 526 */ 527 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 528 MAP_FILE|MAP_COPY, fd, 0); 529 if (lf->buf != MAP_FAILED) { 530 /* succeeded */ 531 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 532 char *b = bmake_malloc(lf->len + 1); 533 b[lf->len] = '\n'; 534 memcpy(b, lf->buf, lf->len++); 535 munmap(lf->buf, lf->maplen); 536 lf->maplen = 0; 537 lf->buf = b; 538 } 539 goto done; 540 } 541 } 542 543 /* cannot mmap; load the traditional way */ 544 545 lf->maplen = 0; 546 lf->len = 1024; 547 lf->buf = bmake_malloc(lf->len); 548 549 bufpos = 0; 550 while (1) { 551 assert(bufpos <= lf->len); 552 if (bufpos == lf->len) { 553 if (lf->len > SIZE_MAX/2) { 554 errno = EFBIG; 555 Error("%s: file too large", path); 556 exit(1); 557 } 558 lf->len *= 2; 559 lf->buf = bmake_realloc(lf->buf, lf->len); 560 } 561 assert(bufpos < lf->len); 562 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 563 if (result < 0) { 564 Error("%s: read error: %s", path, strerror(errno)); 565 exit(1); 566 } 567 if (result == 0) { 568 break; 569 } 570 bufpos += result; 571 } 572 assert(bufpos <= lf->len); 573 lf->len = bufpos; 574 575 /* truncate malloc region to actual length (maybe not useful) */ 576 if (lf->len > 0) { 577 /* as for mmap case, ensure trailing \n */ 578 if (lf->buf[lf->len - 1] != '\n') 579 lf->len++; 580 lf->buf = bmake_realloc(lf->buf, lf->len); 581 lf->buf[lf->len - 1] = '\n'; 582 } 583 584 done: 585 if (path != NULL) { 586 close(fd); 587 } 588 return lf; 589 } 590 591 //////////////////////////////////////////////////////////// 592 // old code 593 594 /*- 595 *---------------------------------------------------------------------- 596 * ParseIsEscaped -- 597 * Check if the current character is escaped on the current line 598 * 599 * Results: 600 * 0 if the character is not backslash escaped, 1 otherwise 601 * 602 * Side Effects: 603 * None 604 *---------------------------------------------------------------------- 605 */ 606 static int 607 ParseIsEscaped(const char *line, const char *c) 608 { 609 int active = 0; 610 for (;;) { 611 if (line == c) 612 return active; 613 if (*--c != '\\') 614 return active; 615 active = !active; 616 } 617 } 618 619 /*- 620 *---------------------------------------------------------------------- 621 * ParseFindKeyword -- 622 * Look in the table of keywords for one matching the given string. 623 * 624 * Input: 625 * str String to find 626 * 627 * Results: 628 * The index of the keyword, or -1 if it isn't there. 629 * 630 * Side Effects: 631 * None 632 *---------------------------------------------------------------------- 633 */ 634 static int 635 ParseFindKeyword(const char *str) 636 { 637 int start, end, cur; 638 int diff; 639 640 start = 0; 641 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 642 643 do { 644 cur = start + ((end - start) / 2); 645 diff = strcmp(str, parseKeywords[cur].name); 646 647 if (diff == 0) { 648 return (cur); 649 } else if (diff < 0) { 650 end = cur - 1; 651 } else { 652 start = cur + 1; 653 } 654 } while (start <= end); 655 return (-1); 656 } 657 658 /*- 659 * ParseVErrorInternal -- 660 * Error message abort function for parsing. Prints out the context 661 * of the error (line number and file) as well as the message with 662 * two optional arguments. 663 * 664 * Results: 665 * None 666 * 667 * Side Effects: 668 * "fatals" is incremented if the level is PARSE_FATAL. 669 */ 670 /* VARARGS */ 671 static void 672 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 673 const char *fmt, va_list ap) 674 { 675 static Boolean fatal_warning_error_printed = FALSE; 676 677 (void)fprintf(f, "%s: ", progname); 678 679 if (cfname != NULL) { 680 (void)fprintf(f, "\""); 681 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 682 char *cp; 683 const char *dir; 684 685 /* 686 * Nothing is more annoying than not knowing 687 * which Makefile is the culprit. 688 */ 689 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 690 if (dir == NULL || *dir == '\0' || 691 (*dir == '.' && dir[1] == '\0')) 692 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 693 if (dir == NULL) 694 dir = "."; 695 696 (void)fprintf(f, "%s/%s", dir, cfname); 697 } else 698 (void)fprintf(f, "%s", cfname); 699 700 (void)fprintf(f, "\" line %d: ", (int)clineno); 701 } 702 if (type == PARSE_WARNING) 703 (void)fprintf(f, "warning: "); 704 (void)vfprintf(f, fmt, ap); 705 (void)fprintf(f, "\n"); 706 (void)fflush(f); 707 if (type == PARSE_INFO) 708 return; 709 if (type == PARSE_FATAL || parseWarnFatal) 710 fatals += 1; 711 if (parseWarnFatal && !fatal_warning_error_printed) { 712 Error("parsing warnings being treated as errors"); 713 fatal_warning_error_printed = TRUE; 714 } 715 } 716 717 /*- 718 * ParseErrorInternal -- 719 * Error function 720 * 721 * Results: 722 * None 723 * 724 * Side Effects: 725 * None 726 */ 727 /* VARARGS */ 728 static void 729 ParseErrorInternal(const char *cfname, size_t clineno, int type, 730 const char *fmt, ...) 731 { 732 va_list ap; 733 734 va_start(ap, fmt); 735 (void)fflush(stdout); 736 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 737 va_end(ap); 738 739 if (debug_file != stderr && debug_file != stdout) { 740 va_start(ap, fmt); 741 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 742 va_end(ap); 743 } 744 } 745 746 /*- 747 * Parse_Error -- 748 * External interface to ParseErrorInternal; uses the default filename 749 * Line number. 750 * 751 * Results: 752 * None 753 * 754 * Side Effects: 755 * None 756 */ 757 /* VARARGS */ 758 void 759 Parse_Error(int type, const char *fmt, ...) 760 { 761 va_list ap; 762 const char *fname; 763 size_t lineno; 764 765 if (curFile == NULL) { 766 fname = NULL; 767 lineno = 0; 768 } else { 769 fname = curFile->fname; 770 lineno = curFile->lineno; 771 } 772 773 va_start(ap, fmt); 774 (void)fflush(stdout); 775 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 776 va_end(ap); 777 778 if (debug_file != stderr && debug_file != stdout) { 779 va_start(ap, fmt); 780 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 781 va_end(ap); 782 } 783 } 784 785 786 /* 787 * ParseMessage 788 * Parse a .info .warning or .error directive 789 * 790 * The input is the line minus the ".". We substitute 791 * variables, print the message and exit(1) (for .error) or just print 792 * a warning if the directive is malformed. 793 */ 794 static Boolean 795 ParseMessage(char *line) 796 { 797 int mtype; 798 799 switch(*line) { 800 case 'i': 801 mtype = PARSE_INFO; 802 break; 803 case 'w': 804 mtype = PARSE_WARNING; 805 break; 806 case 'e': 807 mtype = PARSE_FATAL; 808 break; 809 default: 810 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 811 return FALSE; 812 } 813 814 while (isalpha((unsigned char)*line)) 815 line++; 816 if (!isspace((unsigned char)*line)) 817 return FALSE; /* not for us */ 818 while (isspace((unsigned char)*line)) 819 line++; 820 821 line = Var_Subst(NULL, line, VAR_CMD, VARF_WANTRES); 822 Parse_Error(mtype, "%s", line); 823 free(line); 824 825 if (mtype == PARSE_FATAL) { 826 /* Terminate immediately. */ 827 exit(1); 828 } 829 return TRUE; 830 } 831 832 /*- 833 *--------------------------------------------------------------------- 834 * ParseLinkSrc -- 835 * Link the parent node to its new child. Used in a Lst_ForEach by 836 * ParseDoDependency. If the specType isn't 'Not', the parent 837 * isn't linked as a parent of the child. 838 * 839 * Input: 840 * pgnp The parent node 841 * cgpn The child node 842 * 843 * Results: 844 * Always = 0 845 * 846 * Side Effects: 847 * New elements are added to the parents list of cgn and the 848 * children list of cgn. the unmade field of pgn is updated 849 * to reflect the additional child. 850 *--------------------------------------------------------------------- 851 */ 852 static int 853 ParseLinkSrc(void *pgnp, void *cgnp) 854 { 855 GNode *pgn = (GNode *)pgnp; 856 GNode *cgn = (GNode *)cgnp; 857 858 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 859 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 860 (void)Lst_AtEnd(pgn->children, cgn); 861 if (specType == Not) 862 (void)Lst_AtEnd(cgn->parents, pgn); 863 pgn->unmade += 1; 864 if (DEBUG(PARSE)) { 865 fprintf(debug_file, "# %s: added child %s - %s\n", __func__, 866 pgn->name, cgn->name); 867 Targ_PrintNode(pgn, 0); 868 Targ_PrintNode(cgn, 0); 869 } 870 return (0); 871 } 872 873 /*- 874 *--------------------------------------------------------------------- 875 * ParseDoOp -- 876 * Apply the parsed operator to the given target node. Used in a 877 * Lst_ForEach call by ParseDoDependency once all targets have 878 * been found and their operator parsed. If the previous and new 879 * operators are incompatible, a major error is taken. 880 * 881 * Input: 882 * gnp The node to which the operator is to be applied 883 * opp The operator to apply 884 * 885 * Results: 886 * Always 0 887 * 888 * Side Effects: 889 * The type field of the node is altered to reflect any new bits in 890 * the op. 891 *--------------------------------------------------------------------- 892 */ 893 static int 894 ParseDoOp(void *gnp, void *opp) 895 { 896 GNode *gn = (GNode *)gnp; 897 int op = *(int *)opp; 898 /* 899 * If the dependency mask of the operator and the node don't match and 900 * the node has actually had an operator applied to it before, and 901 * the operator actually has some dependency information in it, complain. 902 */ 903 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 904 !OP_NOP(gn->type) && !OP_NOP(op)) 905 { 906 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 907 return (1); 908 } 909 910 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 911 /* 912 * If the node was the object of a :: operator, we need to create a 913 * new instance of it for the children and commands on this dependency 914 * line. The new instance is placed on the 'cohorts' list of the 915 * initial one (note the initial one is not on its own cohorts list) 916 * and the new instance is linked to all parents of the initial 917 * instance. 918 */ 919 GNode *cohort; 920 921 /* 922 * Propagate copied bits to the initial node. They'll be propagated 923 * back to the rest of the cohorts later. 924 */ 925 gn->type |= op & ~OP_OPMASK; 926 927 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 928 if (doing_depend) 929 ParseMark(cohort); 930 /* 931 * Make the cohort invisible as well to avoid duplicating it into 932 * other variables. True, parents of this target won't tend to do 933 * anything with their local variables, but better safe than 934 * sorry. (I think this is pointless now, since the relevant list 935 * traversals will no longer see this node anyway. -mycroft) 936 */ 937 cohort->type = op | OP_INVISIBLE; 938 (void)Lst_AtEnd(gn->cohorts, cohort); 939 cohort->centurion = gn; 940 gn->unmade_cohorts += 1; 941 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 942 gn->unmade_cohorts); 943 } else { 944 /* 945 * We don't want to nuke any previous flags (whatever they were) so we 946 * just OR the new operator into the old 947 */ 948 gn->type |= op; 949 } 950 951 return (0); 952 } 953 954 /*- 955 *--------------------------------------------------------------------- 956 * ParseDoSrc -- 957 * Given the name of a source, figure out if it is an attribute 958 * and apply it to the targets if it is. Else decide if there is 959 * some attribute which should be applied *to* the source because 960 * of some special target and apply it if so. Otherwise, make the 961 * source be a child of the targets in the list 'targets' 962 * 963 * Input: 964 * tOp operator (if any) from special targets 965 * src name of the source to handle 966 * 967 * Results: 968 * None 969 * 970 * Side Effects: 971 * Operator bits may be added to the list of targets or to the source. 972 * The targets may have a new source added to their lists of children. 973 *--------------------------------------------------------------------- 974 */ 975 static void 976 ParseDoSrc(int tOp, const char *src) 977 { 978 GNode *gn = NULL; 979 static int wait_number = 0; 980 char wait_src[16]; 981 982 if (*src == '.' && isupper ((unsigned char)src[1])) { 983 int keywd = ParseFindKeyword(src); 984 if (keywd != -1) { 985 int op = parseKeywords[keywd].op; 986 if (op != 0) { 987 Lst_ForEach(targets, ParseDoOp, &op); 988 return; 989 } 990 if (parseKeywords[keywd].spec == Wait) { 991 /* 992 * We add a .WAIT node in the dependency list. 993 * After any dynamic dependencies (and filename globbing) 994 * have happened, it is given a dependency on the each 995 * previous child back to and previous .WAIT node. 996 * The next child won't be scheduled until the .WAIT node 997 * is built. 998 * We give each .WAIT node a unique name (mainly for diag). 999 */ 1000 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 1001 gn = Targ_FindNode(wait_src, TARG_NOHASH); 1002 if (doing_depend) 1003 ParseMark(gn); 1004 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 1005 Lst_ForEach(targets, ParseLinkSrc, gn); 1006 return; 1007 } 1008 } 1009 } 1010 1011 switch (specType) { 1012 case Main: 1013 /* 1014 * If we have noted the existence of a .MAIN, it means we need 1015 * to add the sources of said target to the list of things 1016 * to create. The string 'src' is likely to be free, so we 1017 * must make a new copy of it. Note that this will only be 1018 * invoked if the user didn't specify a target on the command 1019 * line. This is to allow #ifmake's to succeed, or something... 1020 */ 1021 (void)Lst_AtEnd(create, bmake_strdup(src)); 1022 /* 1023 * Add the name to the .TARGETS variable as well, so the user can 1024 * employ that, if desired. 1025 */ 1026 Var_Append(".TARGETS", src, VAR_GLOBAL); 1027 return; 1028 1029 case Order: 1030 /* 1031 * Create proper predecessor/successor links between the previous 1032 * source and the current one. 1033 */ 1034 gn = Targ_FindNode(src, TARG_CREATE); 1035 if (doing_depend) 1036 ParseMark(gn); 1037 if (predecessor != NULL) { 1038 (void)Lst_AtEnd(predecessor->order_succ, gn); 1039 (void)Lst_AtEnd(gn->order_pred, predecessor); 1040 if (DEBUG(PARSE)) { 1041 fprintf(debug_file, "# %s: added Order dependency %s - %s\n", 1042 __func__, predecessor->name, gn->name); 1043 Targ_PrintNode(predecessor, 0); 1044 Targ_PrintNode(gn, 0); 1045 } 1046 } 1047 /* 1048 * The current source now becomes the predecessor for the next one. 1049 */ 1050 predecessor = gn; 1051 break; 1052 1053 default: 1054 /* 1055 * If the source is not an attribute, we need to find/create 1056 * a node for it. After that we can apply any operator to it 1057 * from a special target or link it to its parents, as 1058 * appropriate. 1059 * 1060 * In the case of a source that was the object of a :: operator, 1061 * the attribute is applied to all of its instances (as kept in 1062 * the 'cohorts' list of the node) or all the cohorts are linked 1063 * to all the targets. 1064 */ 1065 1066 /* Find/create the 'src' node and attach to all targets */ 1067 gn = Targ_FindNode(src, TARG_CREATE); 1068 if (doing_depend) 1069 ParseMark(gn); 1070 if (tOp) { 1071 gn->type |= tOp; 1072 } else { 1073 Lst_ForEach(targets, ParseLinkSrc, gn); 1074 } 1075 break; 1076 } 1077 } 1078 1079 /*- 1080 *----------------------------------------------------------------------- 1081 * ParseFindMain -- 1082 * Find a real target in the list and set it to be the main one. 1083 * Called by ParseDoDependency when a main target hasn't been found 1084 * yet. 1085 * 1086 * Input: 1087 * gnp Node to examine 1088 * 1089 * Results: 1090 * 0 if main not found yet, 1 if it is. 1091 * 1092 * Side Effects: 1093 * mainNode is changed and Targ_SetMain is called. 1094 * 1095 *----------------------------------------------------------------------- 1096 */ 1097 static int 1098 ParseFindMain(void *gnp, void *dummy MAKE_ATTR_UNUSED) 1099 { 1100 GNode *gn = (GNode *)gnp; 1101 if ((gn->type & OP_NOTARGET) == 0) { 1102 mainNode = gn; 1103 Targ_SetMain(gn); 1104 return 1; 1105 } else { 1106 return 0; 1107 } 1108 } 1109 1110 /*- 1111 *----------------------------------------------------------------------- 1112 * ParseAddDir -- 1113 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1114 * 1115 * Results: 1116 * === 0 1117 * 1118 * Side Effects: 1119 * See Dir_AddDir. 1120 * 1121 *----------------------------------------------------------------------- 1122 */ 1123 static int 1124 ParseAddDir(void *path, void *name) 1125 { 1126 (void)Dir_AddDir((Lst) path, (char *)name); 1127 return(0); 1128 } 1129 1130 /*- 1131 *----------------------------------------------------------------------- 1132 * ParseClearPath -- 1133 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1134 * 1135 * Results: 1136 * === 0 1137 * 1138 * Side Effects: 1139 * See Dir_ClearPath 1140 * 1141 *----------------------------------------------------------------------- 1142 */ 1143 static int 1144 ParseClearPath(void *path, void *dummy MAKE_ATTR_UNUSED) 1145 { 1146 Dir_ClearPath((Lst) path); 1147 return 0; 1148 } 1149 1150 /*- 1151 *--------------------------------------------------------------------- 1152 * ParseDoDependency -- 1153 * Parse the dependency line in line. 1154 * 1155 * Input: 1156 * line the line to parse 1157 * 1158 * Results: 1159 * None 1160 * 1161 * Side Effects: 1162 * The nodes of the sources are linked as children to the nodes of the 1163 * targets. Some nodes may be created. 1164 * 1165 * We parse a dependency line by first extracting words from the line and 1166 * finding nodes in the list of all targets with that name. This is done 1167 * until a character is encountered which is an operator character. Currently 1168 * these are only ! and :. At this point the operator is parsed and the 1169 * pointer into the line advanced until the first source is encountered. 1170 * The parsed operator is applied to each node in the 'targets' list, 1171 * which is where the nodes found for the targets are kept, by means of 1172 * the ParseDoOp function. 1173 * The sources are read in much the same way as the targets were except 1174 * that now they are expanded using the wildcarding scheme of the C-Shell 1175 * and all instances of the resulting words in the list of all targets 1176 * are found. Each of the resulting nodes is then linked to each of the 1177 * targets as one of its children. 1178 * Certain targets are handled specially. These are the ones detailed 1179 * by the specType variable. 1180 * The storing of transformation rules is also taken care of here. 1181 * A target is recognized as a transformation rule by calling 1182 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1183 * from the suffix module via Suff_AddTransform rather than the standard 1184 * Targ_FindNode in the target module. 1185 *--------------------------------------------------------------------- 1186 */ 1187 static void 1188 ParseDoDependency(char *line) 1189 { 1190 char *cp; /* our current position */ 1191 GNode *gn = NULL; /* a general purpose temporary node */ 1192 int op; /* the operator on the line */ 1193 char savec; /* a place to save a character */ 1194 Lst paths; /* List of search paths to alter when parsing 1195 * a list of .PATH targets */ 1196 int tOp; /* operator from special target */ 1197 Lst sources; /* list of archive source names after 1198 * expansion */ 1199 Lst curTargs; /* list of target names to be found and added 1200 * to the targets list */ 1201 char *lstart = line; 1202 1203 if (DEBUG(PARSE)) 1204 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1205 tOp = 0; 1206 1207 specType = Not; 1208 paths = NULL; 1209 1210 curTargs = Lst_Init(FALSE); 1211 1212 /* 1213 * First, grind through the targets. 1214 */ 1215 1216 do { 1217 /* 1218 * Here LINE points to the beginning of the next word, and 1219 * LSTART points to the actual beginning of the line. 1220 */ 1221 1222 /* Find the end of the next word. */ 1223 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1224 !(isspace((unsigned char)*cp) || 1225 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1226 cp++) { 1227 if (*cp == '$') { 1228 /* 1229 * Must be a dynamic source (would have been expanded 1230 * otherwise), so call the Var module to parse the puppy 1231 * so we can safely advance beyond it...There should be 1232 * no errors in this, as they would have been discovered 1233 * in the initial Var_Subst and we wouldn't be here. 1234 */ 1235 int length; 1236 void *freeIt; 1237 1238 (void)Var_Parse(cp, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES, 1239 &length, &freeIt); 1240 free(freeIt); 1241 cp += length-1; 1242 } 1243 } 1244 1245 /* 1246 * If the word is followed by a left parenthesis, it's the 1247 * name of an object file inside an archive (ar file). 1248 */ 1249 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1250 /* 1251 * Archives must be handled specially to make sure the OP_ARCHV 1252 * flag is set in their 'type' field, for one thing, and because 1253 * things like "archive(file1.o file2.o file3.o)" are permissible. 1254 * Arch_ParseArchive will set 'line' to be the first non-blank 1255 * after the archive-spec. It creates/finds nodes for the members 1256 * and places them on the given list, returning SUCCESS if all 1257 * went well and FAILURE if there was an error in the 1258 * specification. On error, line should remain untouched. 1259 */ 1260 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1261 Parse_Error(PARSE_FATAL, 1262 "Error in archive specification: \"%s\"", line); 1263 goto out; 1264 } else { 1265 /* Done with this word; on to the next. */ 1266 cp = line; 1267 continue; 1268 } 1269 } 1270 1271 if (!*cp) { 1272 /* 1273 * We got to the end of the line while we were still 1274 * looking at targets. 1275 * 1276 * Ending a dependency line without an operator is a Bozo 1277 * no-no. As a heuristic, this is also often triggered by 1278 * undetected conflicts from cvs/rcs merges. 1279 */ 1280 if ((strncmp(line, "<<<<<<", 6) == 0) || 1281 (strncmp(line, "======", 6) == 0) || 1282 (strncmp(line, ">>>>>>", 6) == 0)) 1283 Parse_Error(PARSE_FATAL, 1284 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1285 else 1286 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1287 : "Need an operator"); 1288 goto out; 1289 } 1290 1291 /* Insert a null terminator. */ 1292 savec = *cp; 1293 *cp = '\0'; 1294 1295 /* 1296 * Got the word. See if it's a special target and if so set 1297 * specType to match it. 1298 */ 1299 if (*line == '.' && isupper ((unsigned char)line[1])) { 1300 /* 1301 * See if the target is a special target that must have it 1302 * or its sources handled specially. 1303 */ 1304 int keywd = ParseFindKeyword(line); 1305 if (keywd != -1) { 1306 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1307 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1308 goto out; 1309 } 1310 1311 specType = parseKeywords[keywd].spec; 1312 tOp = parseKeywords[keywd].op; 1313 1314 /* 1315 * Certain special targets have special semantics: 1316 * .PATH Have to set the dirSearchPath 1317 * variable too 1318 * .MAIN Its sources are only used if 1319 * nothing has been specified to 1320 * create. 1321 * .DEFAULT Need to create a node to hang 1322 * commands on, but we don't want 1323 * it in the graph, nor do we want 1324 * it to be the Main Target, so we 1325 * create it, set OP_NOTMAIN and 1326 * add it to the list, setting 1327 * DEFAULT to the new node for 1328 * later use. We claim the node is 1329 * A transformation rule to make 1330 * life easier later, when we'll 1331 * use Make_HandleUse to actually 1332 * apply the .DEFAULT commands. 1333 * .PHONY The list of targets 1334 * .NOPATH Don't search for file in the path 1335 * .STALE 1336 * .BEGIN 1337 * .END 1338 * .ERROR 1339 * .DELETE_ON_ERROR 1340 * .INTERRUPT Are not to be considered the 1341 * main target. 1342 * .NOTPARALLEL Make only one target at a time. 1343 * .SINGLESHELL Create a shell for each command. 1344 * .ORDER Must set initial predecessor to NULL 1345 */ 1346 switch (specType) { 1347 case ExPath: 1348 if (paths == NULL) { 1349 paths = Lst_Init(FALSE); 1350 } 1351 (void)Lst_AtEnd(paths, dirSearchPath); 1352 break; 1353 case Main: 1354 if (!Lst_IsEmpty(create)) { 1355 specType = Not; 1356 } 1357 break; 1358 case Begin: 1359 case End: 1360 case Stale: 1361 case dotError: 1362 case Interrupt: 1363 gn = Targ_FindNode(line, TARG_CREATE); 1364 if (doing_depend) 1365 ParseMark(gn); 1366 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1367 (void)Lst_AtEnd(targets, gn); 1368 break; 1369 case Default: 1370 gn = Targ_NewGN(".DEFAULT"); 1371 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1372 (void)Lst_AtEnd(targets, gn); 1373 DEFAULT = gn; 1374 break; 1375 case DeleteOnError: 1376 deleteOnError = TRUE; 1377 break; 1378 case NotParallel: 1379 maxJobs = 1; 1380 break; 1381 case SingleShell: 1382 compatMake = TRUE; 1383 break; 1384 case Order: 1385 predecessor = NULL; 1386 break; 1387 default: 1388 break; 1389 } 1390 } else if (strncmp(line, ".PATH", 5) == 0) { 1391 /* 1392 * .PATH<suffix> has to be handled specially. 1393 * Call on the suffix module to give us a path to 1394 * modify. 1395 */ 1396 Lst path; 1397 1398 specType = ExPath; 1399 path = Suff_GetPath(&line[5]); 1400 if (path == NULL) { 1401 Parse_Error(PARSE_FATAL, 1402 "Suffix '%s' not defined (yet)", 1403 &line[5]); 1404 goto out; 1405 } else { 1406 if (paths == NULL) { 1407 paths = Lst_Init(FALSE); 1408 } 1409 (void)Lst_AtEnd(paths, path); 1410 } 1411 } 1412 } 1413 1414 /* 1415 * Have word in line. Get or create its node and stick it at 1416 * the end of the targets list 1417 */ 1418 if ((specType == Not) && (*line != '\0')) { 1419 if (Dir_HasWildcards(line)) { 1420 /* 1421 * Targets are to be sought only in the current directory, 1422 * so create an empty path for the thing. Note we need to 1423 * use Dir_Destroy in the destruction of the path as the 1424 * Dir module could have added a directory to the path... 1425 */ 1426 Lst emptyPath = Lst_Init(FALSE); 1427 1428 Dir_Expand(line, emptyPath, curTargs); 1429 1430 Lst_Destroy(emptyPath, Dir_Destroy); 1431 } else { 1432 /* 1433 * No wildcards, but we want to avoid code duplication, 1434 * so create a list with the word on it. 1435 */ 1436 (void)Lst_AtEnd(curTargs, line); 1437 } 1438 1439 /* Apply the targets. */ 1440 1441 while(!Lst_IsEmpty(curTargs)) { 1442 char *targName = (char *)Lst_DeQueue(curTargs); 1443 1444 if (!Suff_IsTransform (targName)) { 1445 gn = Targ_FindNode(targName, TARG_CREATE); 1446 } else { 1447 gn = Suff_AddTransform(targName); 1448 } 1449 if (doing_depend) 1450 ParseMark(gn); 1451 1452 (void)Lst_AtEnd(targets, gn); 1453 } 1454 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1455 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1456 } 1457 1458 /* Don't need the inserted null terminator any more. */ 1459 *cp = savec; 1460 1461 /* 1462 * If it is a special type and not .PATH, it's the only target we 1463 * allow on this line... 1464 */ 1465 if (specType != Not && specType != ExPath) { 1466 Boolean warning = FALSE; 1467 1468 while (*cp && (ParseIsEscaped(lstart, cp) || 1469 ((*cp != '!') && (*cp != ':')))) { 1470 if (ParseIsEscaped(lstart, cp) || 1471 (*cp != ' ' && *cp != '\t')) { 1472 warning = TRUE; 1473 } 1474 cp++; 1475 } 1476 if (warning) { 1477 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1478 } 1479 } else { 1480 while (*cp && isspace ((unsigned char)*cp)) { 1481 cp++; 1482 } 1483 } 1484 line = cp; 1485 } while (*line && (ParseIsEscaped(lstart, line) || 1486 ((*line != '!') && (*line != ':')))); 1487 1488 /* 1489 * Don't need the list of target names anymore... 1490 */ 1491 Lst_Destroy(curTargs, NULL); 1492 curTargs = NULL; 1493 1494 if (!Lst_IsEmpty(targets)) { 1495 switch(specType) { 1496 default: 1497 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1498 break; 1499 case Default: 1500 case Stale: 1501 case Begin: 1502 case End: 1503 case dotError: 1504 case Interrupt: 1505 /* 1506 * These four create nodes on which to hang commands, so 1507 * targets shouldn't be empty... 1508 */ 1509 case Not: 1510 /* 1511 * Nothing special here -- targets can be empty if it wants. 1512 */ 1513 break; 1514 } 1515 } 1516 1517 /* 1518 * Have now parsed all the target names. Must parse the operator next. The 1519 * result is left in op . 1520 */ 1521 if (*cp == '!') { 1522 op = OP_FORCE; 1523 } else if (*cp == ':') { 1524 if (cp[1] == ':') { 1525 op = OP_DOUBLEDEP; 1526 cp++; 1527 } else { 1528 op = OP_DEPENDS; 1529 } 1530 } else { 1531 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1532 : "Missing dependency operator"); 1533 goto out; 1534 } 1535 1536 /* Advance beyond the operator */ 1537 cp++; 1538 1539 /* 1540 * Apply the operator to the target. This is how we remember which 1541 * operator a target was defined with. It fails if the operator 1542 * used isn't consistent across all references. 1543 */ 1544 Lst_ForEach(targets, ParseDoOp, &op); 1545 1546 /* 1547 * Onward to the sources. 1548 * 1549 * LINE will now point to the first source word, if any, or the 1550 * end of the string if not. 1551 */ 1552 while (*cp && isspace ((unsigned char)*cp)) { 1553 cp++; 1554 } 1555 line = cp; 1556 1557 /* 1558 * Several special targets take different actions if present with no 1559 * sources: 1560 * a .SUFFIXES line with no sources clears out all old suffixes 1561 * a .PRECIOUS line makes all targets precious 1562 * a .IGNORE line ignores errors for all targets 1563 * a .SILENT line creates silence when making all targets 1564 * a .PATH removes all directories from the search path(s). 1565 */ 1566 if (!*line) { 1567 switch (specType) { 1568 case Suffixes: 1569 Suff_ClearSuffixes(); 1570 break; 1571 case Precious: 1572 allPrecious = TRUE; 1573 break; 1574 case Ignore: 1575 ignoreErrors = TRUE; 1576 break; 1577 case Silent: 1578 beSilent = TRUE; 1579 break; 1580 case ExPath: 1581 Lst_ForEach(paths, ParseClearPath, NULL); 1582 Dir_SetPATH(); 1583 break; 1584 #ifdef POSIX 1585 case Posix: 1586 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1587 break; 1588 #endif 1589 default: 1590 break; 1591 } 1592 } else if (specType == MFlags) { 1593 /* 1594 * Call on functions in main.c to deal with these arguments and 1595 * set the initial character to a null-character so the loop to 1596 * get sources won't get anything 1597 */ 1598 Main_ParseArgLine(line); 1599 *line = '\0'; 1600 } else if (specType == ExShell) { 1601 if (Job_ParseShell(line) != SUCCESS) { 1602 Parse_Error(PARSE_FATAL, "improper shell specification"); 1603 goto out; 1604 } 1605 *line = '\0'; 1606 } else if ((specType == NotParallel) || (specType == SingleShell) || 1607 (specType == DeleteOnError)) { 1608 *line = '\0'; 1609 } 1610 1611 /* 1612 * NOW GO FOR THE SOURCES 1613 */ 1614 if ((specType == Suffixes) || (specType == ExPath) || 1615 (specType == Includes) || (specType == Libs) || 1616 (specType == Null) || (specType == ExObjdir)) 1617 { 1618 while (*line) { 1619 /* 1620 * If the target was one that doesn't take files as its sources 1621 * but takes something like suffixes, we take each 1622 * space-separated word on the line as a something and deal 1623 * with it accordingly. 1624 * 1625 * If the target was .SUFFIXES, we take each source as a 1626 * suffix and add it to the list of suffixes maintained by the 1627 * Suff module. 1628 * 1629 * If the target was a .PATH, we add the source as a directory 1630 * to search on the search path. 1631 * 1632 * If it was .INCLUDES, the source is taken to be the suffix of 1633 * files which will be #included and whose search path should 1634 * be present in the .INCLUDES variable. 1635 * 1636 * If it was .LIBS, the source is taken to be the suffix of 1637 * files which are considered libraries and whose search path 1638 * should be present in the .LIBS variable. 1639 * 1640 * If it was .NULL, the source is the suffix to use when a file 1641 * has no valid suffix. 1642 * 1643 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1644 * and will cause make to do a new chdir to that path. 1645 */ 1646 while (*cp && !isspace ((unsigned char)*cp)) { 1647 cp++; 1648 } 1649 savec = *cp; 1650 *cp = '\0'; 1651 switch (specType) { 1652 case Suffixes: 1653 Suff_AddSuffix(line, &mainNode); 1654 break; 1655 case ExPath: 1656 Lst_ForEach(paths, ParseAddDir, line); 1657 break; 1658 case Includes: 1659 Suff_AddInclude(line); 1660 break; 1661 case Libs: 1662 Suff_AddLib(line); 1663 break; 1664 case Null: 1665 Suff_SetNull(line); 1666 break; 1667 case ExObjdir: 1668 Main_SetObjdir("%s", line); 1669 break; 1670 default: 1671 break; 1672 } 1673 *cp = savec; 1674 if (savec != '\0') { 1675 cp++; 1676 } 1677 while (*cp && isspace ((unsigned char)*cp)) { 1678 cp++; 1679 } 1680 line = cp; 1681 } 1682 if (paths) { 1683 Lst_Destroy(paths, NULL); 1684 paths = NULL; 1685 } 1686 if (specType == ExPath) 1687 Dir_SetPATH(); 1688 } else { 1689 assert(paths == NULL); 1690 while (*line) { 1691 /* 1692 * The targets take real sources, so we must beware of archive 1693 * specifications (i.e. things with left parentheses in them) 1694 * and handle them accordingly. 1695 */ 1696 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1697 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1698 /* 1699 * Only stop for a left parenthesis if it isn't at the 1700 * start of a word (that'll be for variable changes 1701 * later) and isn't preceded by a dollar sign (a dynamic 1702 * source). 1703 */ 1704 break; 1705 } 1706 } 1707 1708 if (*cp == LPAREN) { 1709 sources = Lst_Init(FALSE); 1710 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1711 Parse_Error(PARSE_FATAL, 1712 "Error in source archive spec \"%s\"", line); 1713 goto out; 1714 } 1715 1716 while (!Lst_IsEmpty (sources)) { 1717 gn = (GNode *)Lst_DeQueue(sources); 1718 ParseDoSrc(tOp, gn->name); 1719 } 1720 Lst_Destroy(sources, NULL); 1721 cp = line; 1722 } else { 1723 if (*cp) { 1724 *cp = '\0'; 1725 cp += 1; 1726 } 1727 1728 ParseDoSrc(tOp, line); 1729 } 1730 while (*cp && isspace ((unsigned char)*cp)) { 1731 cp++; 1732 } 1733 line = cp; 1734 } 1735 } 1736 1737 if (mainNode == NULL) { 1738 /* 1739 * If we have yet to decide on a main target to make, in the 1740 * absence of any user input, we want the first target on 1741 * the first dependency line that is actually a real target 1742 * (i.e. isn't a .USE or .EXEC rule) to be made. 1743 */ 1744 Lst_ForEach(targets, ParseFindMain, NULL); 1745 } 1746 1747 out: 1748 assert(paths == NULL); 1749 if (curTargs) 1750 Lst_Destroy(curTargs, NULL); 1751 } 1752 1753 /*- 1754 *--------------------------------------------------------------------- 1755 * Parse_IsVar -- 1756 * Return TRUE if the passed line is a variable assignment. A variable 1757 * assignment consists of a single word followed by optional whitespace 1758 * followed by either a += or an = operator. 1759 * This function is used both by the Parse_File function and main when 1760 * parsing the command-line arguments. 1761 * 1762 * Input: 1763 * line the line to check 1764 * 1765 * Results: 1766 * TRUE if it is. FALSE if it ain't 1767 * 1768 * Side Effects: 1769 * none 1770 *--------------------------------------------------------------------- 1771 */ 1772 Boolean 1773 Parse_IsVar(char *line) 1774 { 1775 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1776 char ch; 1777 int level = 0; 1778 #define ISEQOPERATOR(c) \ 1779 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1780 1781 /* 1782 * Skip to variable name 1783 */ 1784 for (;(*line == ' ') || (*line == '\t'); line++) 1785 continue; 1786 1787 /* Scan for one of the assignment operators outside a variable expansion */ 1788 while ((ch = *line++) != 0) { 1789 if (ch == '(' || ch == '{') { 1790 level++; 1791 continue; 1792 } 1793 if (ch == ')' || ch == '}') { 1794 level--; 1795 continue; 1796 } 1797 if (level != 0) 1798 continue; 1799 while (ch == ' ' || ch == '\t') { 1800 ch = *line++; 1801 wasSpace = TRUE; 1802 } 1803 #ifdef SUNSHCMD 1804 if (ch == ':' && strncmp(line, "sh", 2) == 0) { 1805 line += 2; 1806 continue; 1807 } 1808 #endif 1809 if (ch == '=') 1810 return TRUE; 1811 if (*line == '=' && ISEQOPERATOR(ch)) 1812 return TRUE; 1813 if (wasSpace) 1814 return FALSE; 1815 } 1816 1817 return FALSE; 1818 } 1819 1820 /*- 1821 *--------------------------------------------------------------------- 1822 * Parse_DoVar -- 1823 * Take the variable assignment in the passed line and do it in the 1824 * global context. 1825 * 1826 * Note: There is a lexical ambiguity with assignment modifier characters 1827 * in variable names. This routine interprets the character before the = 1828 * as a modifier. Therefore, an assignment like 1829 * C++=/usr/bin/CC 1830 * is interpreted as "C+ +=" instead of "C++ =". 1831 * 1832 * Input: 1833 * line a line guaranteed to be a variable assignment. 1834 * This reduces error checks 1835 * ctxt Context in which to do the assignment 1836 * 1837 * Results: 1838 * none 1839 * 1840 * Side Effects: 1841 * the variable structure of the given variable name is altered in the 1842 * global context. 1843 *--------------------------------------------------------------------- 1844 */ 1845 void 1846 Parse_DoVar(char *line, GNode *ctxt) 1847 { 1848 char *cp; /* pointer into line */ 1849 enum { 1850 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1851 } type; /* Type of assignment */ 1852 char *opc; /* ptr to operator character to 1853 * null-terminate the variable name */ 1854 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1855 * i.e. if any variable expansion was 1856 * performed */ 1857 int depth; 1858 1859 /* 1860 * Skip to variable name 1861 */ 1862 while ((*line == ' ') || (*line == '\t')) { 1863 line++; 1864 } 1865 1866 /* 1867 * Skip to operator character, nulling out whitespace as we go 1868 * XXX Rather than counting () and {} we should look for $ and 1869 * then expand the variable. 1870 */ 1871 for (depth = 0, cp = line + 1; depth > 0 || *cp != '='; cp++) { 1872 if (*cp == '(' || *cp == '{') { 1873 depth++; 1874 continue; 1875 } 1876 if (*cp == ')' || *cp == '}') { 1877 depth--; 1878 continue; 1879 } 1880 if (depth == 0 && isspace ((unsigned char)*cp)) { 1881 *cp = '\0'; 1882 } 1883 } 1884 opc = cp-1; /* operator is the previous character */ 1885 *cp++ = '\0'; /* nuke the = */ 1886 1887 /* 1888 * Check operator type 1889 */ 1890 switch (*opc) { 1891 case '+': 1892 type = VAR_APPEND; 1893 *opc = '\0'; 1894 break; 1895 1896 case '?': 1897 /* 1898 * If the variable already has a value, we don't do anything. 1899 */ 1900 *opc = '\0'; 1901 if (Var_Exists(line, ctxt)) { 1902 return; 1903 } else { 1904 type = VAR_NORMAL; 1905 } 1906 break; 1907 1908 case ':': 1909 type = VAR_SUBST; 1910 *opc = '\0'; 1911 break; 1912 1913 case '!': 1914 type = VAR_SHELL; 1915 *opc = '\0'; 1916 break; 1917 1918 default: 1919 #ifdef SUNSHCMD 1920 while (opc > line && *opc != ':') 1921 opc--; 1922 1923 if (strncmp(opc, ":sh", 3) == 0) { 1924 type = VAR_SHELL; 1925 *opc = '\0'; 1926 break; 1927 } 1928 #endif 1929 type = VAR_NORMAL; 1930 break; 1931 } 1932 1933 while (isspace ((unsigned char)*cp)) { 1934 cp++; 1935 } 1936 1937 if (type == VAR_APPEND) { 1938 Var_Append(line, cp, ctxt); 1939 } else if (type == VAR_SUBST) { 1940 /* 1941 * Allow variables in the old value to be undefined, but leave their 1942 * invocation alone -- this is done by forcing oldVars to be false. 1943 * XXX: This can cause recursive variables, but that's not hard to do, 1944 * and this allows someone to do something like 1945 * 1946 * CFLAGS = $(.INCLUDES) 1947 * CFLAGS := -I.. $(CFLAGS) 1948 * 1949 * And not get an error. 1950 */ 1951 Boolean oldOldVars = oldVars; 1952 1953 oldVars = FALSE; 1954 1955 /* 1956 * make sure that we set the variable the first time to nothing 1957 * so that it gets substituted! 1958 */ 1959 if (!Var_Exists(line, ctxt)) 1960 Var_Set(line, "", ctxt, 0); 1961 1962 cp = Var_Subst(NULL, cp, ctxt, VARF_WANTRES|VARF_ASSIGN); 1963 oldVars = oldOldVars; 1964 freeCp = TRUE; 1965 1966 Var_Set(line, cp, ctxt, 0); 1967 } else if (type == VAR_SHELL) { 1968 char *res; 1969 const char *error; 1970 1971 if (strchr(cp, '$') != NULL) { 1972 /* 1973 * There's a dollar sign in the command, so perform variable 1974 * expansion on the whole thing. The resulting string will need 1975 * freeing when we're done, so set freeCmd to TRUE. 1976 */ 1977 cp = Var_Subst(NULL, cp, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES); 1978 freeCp = TRUE; 1979 } 1980 1981 res = Cmd_Exec(cp, &error); 1982 Var_Set(line, res, ctxt, 0); 1983 free(res); 1984 1985 if (error) 1986 Parse_Error(PARSE_WARNING, error, cp); 1987 } else { 1988 /* 1989 * Normal assignment -- just do it. 1990 */ 1991 Var_Set(line, cp, ctxt, 0); 1992 } 1993 if (strcmp(line, MAKEOVERRIDES) == 0) 1994 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1995 else if (strcmp(line, ".CURDIR") == 0) { 1996 /* 1997 * Somone is being (too?) clever... 1998 * Let's pretend they know what they are doing and 1999 * re-initialize the 'cur' Path. 2000 */ 2001 Dir_InitCur(cp); 2002 Dir_SetPATH(); 2003 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 2004 Job_SetPrefix(); 2005 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 2006 Var_Export(cp, 0); 2007 } 2008 if (freeCp) 2009 free(cp); 2010 } 2011 2012 2013 /* 2014 * ParseMaybeSubMake -- 2015 * Scan the command string to see if it a possible submake node 2016 * Input: 2017 * cmd the command to scan 2018 * Results: 2019 * TRUE if the command is possibly a submake, FALSE if not. 2020 */ 2021 static Boolean 2022 ParseMaybeSubMake(const char *cmd) 2023 { 2024 size_t i; 2025 static struct { 2026 const char *name; 2027 size_t len; 2028 } vals[] = { 2029 #define MKV(A) { A, sizeof(A) - 1 } 2030 MKV("${MAKE}"), 2031 MKV("${.MAKE}"), 2032 MKV("$(MAKE)"), 2033 MKV("$(.MAKE)"), 2034 MKV("make"), 2035 }; 2036 for (i = 0; i < sizeof(vals)/sizeof(vals[0]); i++) { 2037 char *ptr; 2038 if ((ptr = strstr(cmd, vals[i].name)) == NULL) 2039 continue; 2040 if ((ptr == cmd || !isalnum((unsigned char)ptr[-1])) 2041 && !isalnum((unsigned char)ptr[vals[i].len])) 2042 return TRUE; 2043 } 2044 return FALSE; 2045 } 2046 2047 /*- 2048 * ParseAddCmd -- 2049 * Lst_ForEach function to add a command line to all targets 2050 * 2051 * Input: 2052 * gnp the node to which the command is to be added 2053 * cmd the command to add 2054 * 2055 * Results: 2056 * Always 0 2057 * 2058 * Side Effects: 2059 * A new element is added to the commands list of the node, 2060 * and the node can be marked as a submake node if the command is 2061 * determined to be that. 2062 */ 2063 static int 2064 ParseAddCmd(void *gnp, void *cmd) 2065 { 2066 GNode *gn = (GNode *)gnp; 2067 2068 /* Add to last (ie current) cohort for :: targets */ 2069 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 2070 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 2071 2072 /* if target already supplied, ignore commands */ 2073 if (!(gn->type & OP_HAS_COMMANDS)) { 2074 (void)Lst_AtEnd(gn->commands, cmd); 2075 if (ParseMaybeSubMake(cmd)) 2076 gn->type |= OP_SUBMAKE; 2077 ParseMark(gn); 2078 } else { 2079 #ifdef notyet 2080 /* XXX: We cannot do this until we fix the tree */ 2081 (void)Lst_AtEnd(gn->commands, cmd); 2082 Parse_Error(PARSE_WARNING, 2083 "overriding commands for target \"%s\"; " 2084 "previous commands defined at %s: %d ignored", 2085 gn->name, gn->fname, gn->lineno); 2086 #else 2087 Parse_Error(PARSE_WARNING, 2088 "duplicate script for target \"%s\" ignored", 2089 gn->name); 2090 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 2091 "using previous script for \"%s\" defined here", 2092 gn->name); 2093 #endif 2094 } 2095 return(0); 2096 } 2097 2098 /*- 2099 *----------------------------------------------------------------------- 2100 * ParseHasCommands -- 2101 * Callback procedure for Parse_File when destroying the list of 2102 * targets on the last dependency line. Marks a target as already 2103 * having commands if it does, to keep from having shell commands 2104 * on multiple dependency lines. 2105 * 2106 * Input: 2107 * gnp Node to examine 2108 * 2109 * Results: 2110 * None 2111 * 2112 * Side Effects: 2113 * OP_HAS_COMMANDS may be set for the target. 2114 * 2115 *----------------------------------------------------------------------- 2116 */ 2117 static void 2118 ParseHasCommands(void *gnp) 2119 { 2120 GNode *gn = (GNode *)gnp; 2121 if (!Lst_IsEmpty(gn->commands)) { 2122 gn->type |= OP_HAS_COMMANDS; 2123 } 2124 } 2125 2126 /*- 2127 *----------------------------------------------------------------------- 2128 * Parse_AddIncludeDir -- 2129 * Add a directory to the path searched for included makefiles 2130 * bracketed by double-quotes. Used by functions in main.c 2131 * 2132 * Input: 2133 * dir The name of the directory to add 2134 * 2135 * Results: 2136 * None. 2137 * 2138 * Side Effects: 2139 * The directory is appended to the list. 2140 * 2141 *----------------------------------------------------------------------- 2142 */ 2143 void 2144 Parse_AddIncludeDir(char *dir) 2145 { 2146 (void)Dir_AddDir(parseIncPath, dir); 2147 } 2148 2149 /*- 2150 *--------------------------------------------------------------------- 2151 * ParseDoInclude -- 2152 * Push to another file. 2153 * 2154 * The input is the line minus the `.'. A file spec is a string 2155 * enclosed in <> or "". The former is looked for only in sysIncPath. 2156 * The latter in . and the directories specified by -I command line 2157 * options 2158 * 2159 * Results: 2160 * None 2161 * 2162 * Side Effects: 2163 * A structure is added to the includes Lst and readProc, lineno, 2164 * fname and curFILE are altered for the new file 2165 *--------------------------------------------------------------------- 2166 */ 2167 2168 static void 2169 Parse_include_file(char *file, Boolean isSystem, Boolean depinc, int silent) 2170 { 2171 struct loadedfile *lf; 2172 char *fullname; /* full pathname of file */ 2173 char *newName; 2174 char *prefEnd, *incdir; 2175 int fd; 2176 int i; 2177 2178 /* 2179 * Now we know the file's name and its search path, we attempt to 2180 * find the durn thing. A return of NULL indicates the file don't 2181 * exist. 2182 */ 2183 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2184 2185 if (fullname == NULL && !isSystem) { 2186 /* 2187 * Include files contained in double-quotes are first searched for 2188 * relative to the including file's location. We don't want to 2189 * cd there, of course, so we just tack on the old file's 2190 * leading path components and call Dir_FindFile to see if 2191 * we can locate the beast. 2192 */ 2193 2194 incdir = bmake_strdup(curFile->fname); 2195 prefEnd = strrchr(incdir, '/'); 2196 if (prefEnd != NULL) { 2197 *prefEnd = '\0'; 2198 /* Now do lexical processing of leading "../" on the filename */ 2199 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2200 prefEnd = strrchr(incdir + 1, '/'); 2201 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2202 break; 2203 *prefEnd = '\0'; 2204 } 2205 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2206 fullname = Dir_FindFile(newName, parseIncPath); 2207 if (fullname == NULL) 2208 fullname = Dir_FindFile(newName, dirSearchPath); 2209 free(newName); 2210 } 2211 free(incdir); 2212 2213 if (fullname == NULL) { 2214 /* 2215 * Makefile wasn't found in same directory as included makefile. 2216 * Search for it first on the -I search path, 2217 * then on the .PATH search path, if not found in a -I directory. 2218 * If we have a suffix specific path we should use that. 2219 */ 2220 char *suff; 2221 Lst suffPath = NULL; 2222 2223 if ((suff = strrchr(file, '.'))) { 2224 suffPath = Suff_GetPath(suff); 2225 if (suffPath != NULL) { 2226 fullname = Dir_FindFile(file, suffPath); 2227 } 2228 } 2229 if (fullname == NULL) { 2230 fullname = Dir_FindFile(file, parseIncPath); 2231 if (fullname == NULL) { 2232 fullname = Dir_FindFile(file, dirSearchPath); 2233 } 2234 } 2235 } 2236 } 2237 2238 /* Looking for a system file or file still not found */ 2239 if (fullname == NULL) { 2240 /* 2241 * Look for it on the system path 2242 */ 2243 fullname = Dir_FindFile(file, 2244 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2245 } 2246 2247 if (fullname == NULL) { 2248 if (!silent) 2249 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2250 return; 2251 } 2252 2253 /* Actually open the file... */ 2254 fd = open(fullname, O_RDONLY); 2255 if (fd == -1) { 2256 if (!silent) 2257 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2258 free(fullname); 2259 return; 2260 } 2261 2262 /* load it */ 2263 lf = loadfile(fullname, fd); 2264 2265 ParseSetIncludedFile(); 2266 /* Start reading from this file next */ 2267 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2268 curFile->lf = lf; 2269 if (depinc) 2270 doing_depend = depinc; /* only turn it on */ 2271 } 2272 2273 static void 2274 ParseDoInclude(char *line) 2275 { 2276 char endc; /* the character which ends the file spec */ 2277 char *cp; /* current position in file spec */ 2278 int silent = (*line != 'i') ? 1 : 0; 2279 char *file = &line[7 + silent]; 2280 2281 /* Skip to delimiter character so we know where to look */ 2282 while (*file == ' ' || *file == '\t') 2283 file++; 2284 2285 if (*file != '"' && *file != '<') { 2286 Parse_Error(PARSE_FATAL, 2287 ".include filename must be delimited by '\"' or '<'"); 2288 return; 2289 } 2290 2291 /* 2292 * Set the search path on which to find the include file based on the 2293 * characters which bracket its name. Angle-brackets imply it's 2294 * a system Makefile while double-quotes imply it's a user makefile 2295 */ 2296 if (*file == '<') { 2297 endc = '>'; 2298 } else { 2299 endc = '"'; 2300 } 2301 2302 /* Skip to matching delimiter */ 2303 for (cp = ++file; *cp && *cp != endc; cp++) 2304 continue; 2305 2306 if (*cp != endc) { 2307 Parse_Error(PARSE_FATAL, 2308 "Unclosed %cinclude filename. '%c' expected", 2309 '.', endc); 2310 return; 2311 } 2312 *cp = '\0'; 2313 2314 /* 2315 * Substitute for any variables in the file name before trying to 2316 * find the thing. 2317 */ 2318 file = Var_Subst(NULL, file, VAR_CMD, VARF_WANTRES); 2319 2320 Parse_include_file(file, endc == '>', (*line == 'd'), silent); 2321 free(file); 2322 } 2323 2324 2325 /*- 2326 *--------------------------------------------------------------------- 2327 * ParseSetIncludedFile -- 2328 * Set the .INCLUDEDFROMFILE variable to the contents of .PARSEFILE 2329 * and the .INCLUDEDFROMDIR variable to the contents of .PARSEDIR 2330 * 2331 * Results: 2332 * None 2333 * 2334 * Side Effects: 2335 * The .INCLUDEDFROMFILE variable is overwritten by the contents 2336 * of .PARSEFILE and the .INCLUDEDFROMDIR variable is overwriten 2337 * by the contents of .PARSEDIR 2338 *--------------------------------------------------------------------- 2339 */ 2340 static void 2341 ParseSetIncludedFile(void) 2342 { 2343 char *pf, *fp = NULL; 2344 char *pd, *dp = NULL; 2345 2346 pf = Var_Value(".PARSEFILE", VAR_GLOBAL, &fp); 2347 Var_Set(".INCLUDEDFROMFILE", pf, VAR_GLOBAL, 0); 2348 pd = Var_Value(".PARSEDIR", VAR_GLOBAL, &dp); 2349 Var_Set(".INCLUDEDFROMDIR", pd, VAR_GLOBAL, 0); 2350 2351 if (DEBUG(PARSE)) 2352 fprintf(debug_file, "%s: ${.INCLUDEDFROMDIR} = `%s' " 2353 "${.INCLUDEDFROMFILE} = `%s'\n", __func__, pd, pf); 2354 2355 free(fp); 2356 free(dp); 2357 } 2358 /*- 2359 *--------------------------------------------------------------------- 2360 * ParseSetParseFile -- 2361 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2362 * basename of the given filename 2363 * 2364 * Results: 2365 * None 2366 * 2367 * Side Effects: 2368 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2369 * dirname and basename of the given filename. 2370 *--------------------------------------------------------------------- 2371 */ 2372 static void 2373 ParseSetParseFile(const char *filename) 2374 { 2375 char *slash, *dirname; 2376 const char *pd, *pf; 2377 int len; 2378 2379 slash = strrchr(filename, '/'); 2380 if (slash == NULL) { 2381 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2382 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2383 dirname= NULL; 2384 } else { 2385 len = slash - filename; 2386 dirname = bmake_malloc(len + 1); 2387 memcpy(dirname, filename, len); 2388 dirname[len] = '\0'; 2389 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2390 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2391 } 2392 if (DEBUG(PARSE)) 2393 fprintf(debug_file, "%s: ${.PARSEDIR} = `%s' ${.PARSEFILE} = `%s'\n", 2394 __func__, pd, pf); 2395 free(dirname); 2396 } 2397 2398 /* 2399 * Track the makefiles we read - so makefiles can 2400 * set dependencies on them. 2401 * Avoid adding anything more than once. 2402 */ 2403 2404 static void 2405 ParseTrackInput(const char *name) 2406 { 2407 char *old; 2408 char *ep; 2409 char *fp = NULL; 2410 size_t name_len = strlen(name); 2411 2412 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2413 if (old) { 2414 ep = old + strlen(old) - name_len; 2415 /* does it contain name? */ 2416 for (; old != NULL; old = strchr(old, ' ')) { 2417 if (*old == ' ') 2418 old++; 2419 if (old >= ep) 2420 break; /* cannot contain name */ 2421 if (memcmp(old, name, name_len) == 0 2422 && (old[name_len] == 0 || old[name_len] == ' ')) 2423 goto cleanup; 2424 } 2425 } 2426 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2427 cleanup: 2428 if (fp) { 2429 free(fp); 2430 } 2431 } 2432 2433 2434 /*- 2435 *--------------------------------------------------------------------- 2436 * Parse_setInput -- 2437 * Start Parsing from the given source 2438 * 2439 * Results: 2440 * None 2441 * 2442 * Side Effects: 2443 * A structure is added to the includes Lst and readProc, lineno, 2444 * fname and curFile are altered for the new file 2445 *--------------------------------------------------------------------- 2446 */ 2447 void 2448 Parse_SetInput(const char *name, int line, int fd, 2449 char *(*nextbuf)(void *, size_t *), void *arg) 2450 { 2451 char *buf; 2452 size_t len; 2453 2454 if (name == NULL) 2455 name = curFile->fname; 2456 else 2457 ParseTrackInput(name); 2458 2459 if (DEBUG(PARSE)) 2460 fprintf(debug_file, "%s: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2461 __func__, name, line, fd, nextbuf, arg); 2462 2463 if (fd == -1 && nextbuf == NULL) 2464 /* sanity */ 2465 return; 2466 2467 if (curFile != NULL) 2468 /* Save exiting file info */ 2469 Lst_AtFront(includes, curFile); 2470 2471 /* Allocate and fill in new structure */ 2472 curFile = bmake_malloc(sizeof *curFile); 2473 2474 /* 2475 * Once the previous state has been saved, we can get down to reading 2476 * the new file. We set up the name of the file to be the absolute 2477 * name of the include file so error messages refer to the right 2478 * place. 2479 */ 2480 curFile->fname = bmake_strdup(name); 2481 curFile->lineno = line; 2482 curFile->first_lineno = line; 2483 curFile->nextbuf = nextbuf; 2484 curFile->nextbuf_arg = arg; 2485 curFile->lf = NULL; 2486 curFile->depending = doing_depend; /* restore this on EOF */ 2487 2488 assert(nextbuf != NULL); 2489 2490 /* Get first block of input data */ 2491 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2492 if (buf == NULL) { 2493 /* Was all a waste of time ... */ 2494 if (curFile->fname) 2495 free(curFile->fname); 2496 free(curFile); 2497 return; 2498 } 2499 curFile->P_str = buf; 2500 curFile->P_ptr = buf; 2501 curFile->P_end = buf+len; 2502 2503 curFile->cond_depth = Cond_save_depth(); 2504 ParseSetParseFile(name); 2505 } 2506 2507 #ifdef SYSVINCLUDE 2508 /*- 2509 *--------------------------------------------------------------------- 2510 * ParseTraditionalInclude -- 2511 * Push to another file. 2512 * 2513 * The input is the current line. The file name(s) are 2514 * following the "include". 2515 * 2516 * Results: 2517 * None 2518 * 2519 * Side Effects: 2520 * A structure is added to the includes Lst and readProc, lineno, 2521 * fname and curFILE are altered for the new file 2522 *--------------------------------------------------------------------- 2523 */ 2524 static void 2525 ParseTraditionalInclude(char *line) 2526 { 2527 char *cp; /* current position in file spec */ 2528 int done = 0; 2529 int silent = (line[0] != 'i') ? 1 : 0; 2530 char *file = &line[silent + 7]; 2531 char *all_files; 2532 2533 if (DEBUG(PARSE)) { 2534 fprintf(debug_file, "%s: %s\n", __func__, file); 2535 } 2536 2537 /* 2538 * Skip over whitespace 2539 */ 2540 while (isspace((unsigned char)*file)) 2541 file++; 2542 2543 /* 2544 * Substitute for any variables in the file name before trying to 2545 * find the thing. 2546 */ 2547 all_files = Var_Subst(NULL, file, VAR_CMD, VARF_WANTRES); 2548 2549 if (*file == '\0') { 2550 Parse_Error(PARSE_FATAL, 2551 "Filename missing from \"include\""); 2552 goto out; 2553 } 2554 2555 for (file = all_files; !done; file = cp + 1) { 2556 /* Skip to end of line or next whitespace */ 2557 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2558 continue; 2559 2560 if (*cp) 2561 *cp = '\0'; 2562 else 2563 done = 1; 2564 2565 Parse_include_file(file, FALSE, FALSE, silent); 2566 } 2567 out: 2568 free(all_files); 2569 } 2570 #endif 2571 2572 #ifdef GMAKEEXPORT 2573 /*- 2574 *--------------------------------------------------------------------- 2575 * ParseGmakeExport -- 2576 * Parse export <variable>=<value> 2577 * 2578 * And set the environment with it. 2579 * 2580 * Results: 2581 * None 2582 * 2583 * Side Effects: 2584 * None 2585 *--------------------------------------------------------------------- 2586 */ 2587 static void 2588 ParseGmakeExport(char *line) 2589 { 2590 char *variable = &line[6]; 2591 char *value; 2592 2593 if (DEBUG(PARSE)) { 2594 fprintf(debug_file, "%s: %s\n", __func__, variable); 2595 } 2596 2597 /* 2598 * Skip over whitespace 2599 */ 2600 while (isspace((unsigned char)*variable)) 2601 variable++; 2602 2603 for (value = variable; *value && *value != '='; value++) 2604 continue; 2605 2606 if (*value != '=') { 2607 Parse_Error(PARSE_FATAL, 2608 "Variable/Value missing from \"export\""); 2609 return; 2610 } 2611 *value++ = '\0'; /* terminate variable */ 2612 2613 /* 2614 * Expand the value before putting it in the environment. 2615 */ 2616 value = Var_Subst(NULL, value, VAR_CMD, VARF_WANTRES); 2617 setenv(variable, value, 1); 2618 free(value); 2619 } 2620 #endif 2621 2622 /*- 2623 *--------------------------------------------------------------------- 2624 * ParseEOF -- 2625 * Called when EOF is reached in the current file. If we were reading 2626 * an include file, the includes stack is popped and things set up 2627 * to go back to reading the previous file at the previous location. 2628 * 2629 * Results: 2630 * CONTINUE if there's more to do. DONE if not. 2631 * 2632 * Side Effects: 2633 * The old curFILE, is closed. The includes list is shortened. 2634 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2635 *--------------------------------------------------------------------- 2636 */ 2637 static int 2638 ParseEOF(void) 2639 { 2640 char *ptr; 2641 size_t len; 2642 2643 assert(curFile->nextbuf != NULL); 2644 2645 doing_depend = curFile->depending; /* restore this */ 2646 /* get next input buffer, if any */ 2647 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2648 curFile->P_ptr = ptr; 2649 curFile->P_str = ptr; 2650 curFile->P_end = ptr + len; 2651 curFile->lineno = curFile->first_lineno; 2652 if (ptr != NULL) { 2653 /* Iterate again */ 2654 return CONTINUE; 2655 } 2656 2657 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2658 Cond_restore_depth(curFile->cond_depth); 2659 2660 if (curFile->lf != NULL) { 2661 loadedfile_destroy(curFile->lf); 2662 curFile->lf = NULL; 2663 } 2664 2665 /* Dispose of curFile info */ 2666 /* Leak curFile->fname because all the gnodes have pointers to it */ 2667 free(curFile->P_str); 2668 free(curFile); 2669 2670 curFile = Lst_DeQueue(includes); 2671 2672 if (curFile == NULL) { 2673 /* We've run out of input */ 2674 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2675 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2676 Var_Delete(".INCLUDEDFROMDIR", VAR_GLOBAL); 2677 Var_Delete(".INCLUDEDFROMFILE", VAR_GLOBAL); 2678 return DONE; 2679 } 2680 2681 if (DEBUG(PARSE)) 2682 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2683 curFile->fname, curFile->lineno); 2684 2685 /* Restore the PARSEDIR/PARSEFILE variables */ 2686 ParseSetParseFile(curFile->fname); 2687 return (CONTINUE); 2688 } 2689 2690 #define PARSE_RAW 1 2691 #define PARSE_SKIP 2 2692 2693 static char * 2694 ParseGetLine(int flags, int *length) 2695 { 2696 IFile *cf = curFile; 2697 char *ptr; 2698 char ch; 2699 char *line; 2700 char *line_end; 2701 char *escaped; 2702 char *comment; 2703 char *tp; 2704 2705 /* Loop through blank lines and comment lines */ 2706 for (;;) { 2707 cf->lineno++; 2708 line = cf->P_ptr; 2709 ptr = line; 2710 line_end = line; 2711 escaped = NULL; 2712 comment = NULL; 2713 for (;;) { 2714 if (cf->P_end != NULL && ptr == cf->P_end) { 2715 /* end of buffer */ 2716 ch = 0; 2717 break; 2718 } 2719 ch = *ptr; 2720 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2721 if (cf->P_end == NULL) 2722 /* End of string (aka for loop) data */ 2723 break; 2724 /* see if there is more we can parse */ 2725 while (ptr++ < cf->P_end) { 2726 if ((ch = *ptr) == '\n') { 2727 if (ptr > line && ptr[-1] == '\\') 2728 continue; 2729 Parse_Error(PARSE_WARNING, 2730 "Zero byte read from file, skipping rest of line."); 2731 break; 2732 } 2733 } 2734 if (cf->nextbuf != NULL) { 2735 /* 2736 * End of this buffer; return EOF and outer logic 2737 * will get the next one. (eww) 2738 */ 2739 break; 2740 } 2741 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2742 return NULL; 2743 } 2744 2745 if (ch == '\\') { 2746 /* Don't treat next character as special, remember first one */ 2747 if (escaped == NULL) 2748 escaped = ptr; 2749 if (ptr[1] == '\n') 2750 cf->lineno++; 2751 ptr += 2; 2752 line_end = ptr; 2753 continue; 2754 } 2755 if (ch == '#' && comment == NULL) { 2756 /* Remember first '#' for comment stripping */ 2757 /* Unless previous char was '[', as in modifier :[#] */ 2758 if (!(ptr > line && ptr[-1] == '[')) 2759 comment = line_end; 2760 } 2761 ptr++; 2762 if (ch == '\n') 2763 break; 2764 if (!isspace((unsigned char)ch)) 2765 /* We are not interested in trailing whitespace */ 2766 line_end = ptr; 2767 } 2768 2769 /* Save next 'to be processed' location */ 2770 cf->P_ptr = ptr; 2771 2772 /* Check we have a non-comment, non-blank line */ 2773 if (line_end == line || comment == line) { 2774 if (ch == 0) 2775 /* At end of file */ 2776 return NULL; 2777 /* Parse another line */ 2778 continue; 2779 } 2780 2781 /* We now have a line of data */ 2782 *line_end = 0; 2783 2784 if (flags & PARSE_RAW) { 2785 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2786 *length = line_end - line; 2787 return line; 2788 } 2789 2790 if (flags & PARSE_SKIP) { 2791 /* Completely ignore non-directives */ 2792 if (line[0] != '.') 2793 continue; 2794 /* We could do more of the .else/.elif/.endif checks here */ 2795 } 2796 break; 2797 } 2798 2799 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2800 if (comment != NULL && line[0] != '\t') { 2801 line_end = comment; 2802 *line_end = 0; 2803 } 2804 2805 /* If we didn't see a '\\' then the in-situ data is fine */ 2806 if (escaped == NULL) { 2807 *length = line_end - line; 2808 return line; 2809 } 2810 2811 /* Remove escapes from '\n' and '#' */ 2812 tp = ptr = escaped; 2813 escaped = line; 2814 for (; ; *tp++ = ch) { 2815 ch = *ptr++; 2816 if (ch != '\\') { 2817 if (ch == 0) 2818 break; 2819 continue; 2820 } 2821 2822 ch = *ptr++; 2823 if (ch == 0) { 2824 /* Delete '\\' at end of buffer */ 2825 tp--; 2826 break; 2827 } 2828 2829 if (ch == '#' && line[0] != '\t') 2830 /* Delete '\\' from before '#' on non-command lines */ 2831 continue; 2832 2833 if (ch != '\n') { 2834 /* Leave '\\' in buffer for later */ 2835 *tp++ = '\\'; 2836 /* Make sure we don't delete an escaped ' ' from the line end */ 2837 escaped = tp + 1; 2838 continue; 2839 } 2840 2841 /* Escaped '\n' replace following whitespace with a single ' ' */ 2842 while (ptr[0] == ' ' || ptr[0] == '\t') 2843 ptr++; 2844 ch = ' '; 2845 } 2846 2847 /* Delete any trailing spaces - eg from empty continuations */ 2848 while (tp > escaped && isspace((unsigned char)tp[-1])) 2849 tp--; 2850 2851 *tp = 0; 2852 *length = tp - line; 2853 return line; 2854 } 2855 2856 /*- 2857 *--------------------------------------------------------------------- 2858 * ParseReadLine -- 2859 * Read an entire line from the input file. Called only by Parse_File. 2860 * 2861 * Results: 2862 * A line w/o its newline 2863 * 2864 * Side Effects: 2865 * Only those associated with reading a character 2866 *--------------------------------------------------------------------- 2867 */ 2868 static char * 2869 ParseReadLine(void) 2870 { 2871 char *line; /* Result */ 2872 int lineLength; /* Length of result */ 2873 int lineno; /* Saved line # */ 2874 int rval; 2875 2876 for (;;) { 2877 line = ParseGetLine(0, &lineLength); 2878 if (line == NULL) 2879 return NULL; 2880 2881 if (line[0] != '.') 2882 return line; 2883 2884 /* 2885 * The line might be a conditional. Ask the conditional module 2886 * about it and act accordingly 2887 */ 2888 switch (Cond_Eval(line)) { 2889 case COND_SKIP: 2890 /* Skip to next conditional that evaluates to COND_PARSE. */ 2891 do { 2892 line = ParseGetLine(PARSE_SKIP, &lineLength); 2893 } while (line && Cond_Eval(line) != COND_PARSE); 2894 if (line == NULL) 2895 break; 2896 continue; 2897 case COND_PARSE: 2898 continue; 2899 case COND_INVALID: /* Not a conditional line */ 2900 /* Check for .for loops */ 2901 rval = For_Eval(line); 2902 if (rval == 0) 2903 /* Not a .for line */ 2904 break; 2905 if (rval < 0) 2906 /* Syntax error - error printed, ignore line */ 2907 continue; 2908 /* Start of a .for loop */ 2909 lineno = curFile->lineno; 2910 /* Accumulate loop lines until matching .endfor */ 2911 do { 2912 line = ParseGetLine(PARSE_RAW, &lineLength); 2913 if (line == NULL) { 2914 Parse_Error(PARSE_FATAL, 2915 "Unexpected end of file in for loop."); 2916 break; 2917 } 2918 } while (For_Accum(line)); 2919 /* Stash each iteration as a new 'input file' */ 2920 For_Run(lineno); 2921 /* Read next line from for-loop buffer */ 2922 continue; 2923 } 2924 return (line); 2925 } 2926 } 2927 2928 /*- 2929 *----------------------------------------------------------------------- 2930 * ParseFinishLine -- 2931 * Handle the end of a dependency group. 2932 * 2933 * Results: 2934 * Nothing. 2935 * 2936 * Side Effects: 2937 * inLine set FALSE. 'targets' list destroyed. 2938 * 2939 *----------------------------------------------------------------------- 2940 */ 2941 static void 2942 ParseFinishLine(void) 2943 { 2944 if (inLine) { 2945 Lst_ForEach(targets, Suff_EndTransform, NULL); 2946 Lst_Destroy(targets, ParseHasCommands); 2947 targets = NULL; 2948 inLine = FALSE; 2949 } 2950 } 2951 2952 2953 /*- 2954 *--------------------------------------------------------------------- 2955 * Parse_File -- 2956 * Parse a file into its component parts, incorporating it into the 2957 * current dependency graph. This is the main function and controls 2958 * almost every other function in this module 2959 * 2960 * Input: 2961 * name the name of the file being read 2962 * fd Open file to makefile to parse 2963 * 2964 * Results: 2965 * None 2966 * 2967 * Side Effects: 2968 * closes fd. 2969 * Loads. Nodes are added to the list of all targets, nodes and links 2970 * are added to the dependency graph. etc. etc. etc. 2971 *--------------------------------------------------------------------- 2972 */ 2973 void 2974 Parse_File(const char *name, int fd) 2975 { 2976 char *cp; /* pointer into the line */ 2977 char *line; /* the line we're working on */ 2978 struct loadedfile *lf; 2979 2980 lf = loadfile(name, fd); 2981 2982 inLine = FALSE; 2983 fatals = 0; 2984 2985 if (name == NULL) { 2986 name = "(stdin)"; 2987 } 2988 2989 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2990 curFile->lf = lf; 2991 2992 do { 2993 for (; (line = ParseReadLine()) != NULL; ) { 2994 if (DEBUG(PARSE)) 2995 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2996 curFile->lineno, line); 2997 if (*line == '.') { 2998 /* 2999 * Lines that begin with the special character may be 3000 * include or undef directives. 3001 * On the other hand they can be suffix rules (.c.o: ...) 3002 * or just dependencies for filenames that start '.'. 3003 */ 3004 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 3005 continue; 3006 } 3007 if (strncmp(cp, "include", 7) == 0 || 3008 ((cp[0] == 'd' || cp[0] == 's' || cp[0] == '-') && 3009 strncmp(&cp[1], "include", 7) == 0)) { 3010 ParseDoInclude(cp); 3011 continue; 3012 } 3013 if (strncmp(cp, "undef", 5) == 0) { 3014 char *cp2; 3015 for (cp += 5; isspace((unsigned char) *cp); cp++) 3016 continue; 3017 for (cp2 = cp; !isspace((unsigned char) *cp2) && 3018 (*cp2 != '\0'); cp2++) 3019 continue; 3020 *cp2 = '\0'; 3021 Var_Delete(cp, VAR_GLOBAL); 3022 continue; 3023 } else if (strncmp(cp, "export", 6) == 0) { 3024 for (cp += 6; isspace((unsigned char) *cp); cp++) 3025 continue; 3026 Var_Export(cp, 1); 3027 continue; 3028 } else if (strncmp(cp, "unexport", 8) == 0) { 3029 Var_UnExport(cp); 3030 continue; 3031 } else if (strncmp(cp, "info", 4) == 0 || 3032 strncmp(cp, "error", 5) == 0 || 3033 strncmp(cp, "warning", 7) == 0) { 3034 if (ParseMessage(cp)) 3035 continue; 3036 } 3037 } 3038 3039 if (*line == '\t') { 3040 /* 3041 * If a line starts with a tab, it can only hope to be 3042 * a creation command. 3043 */ 3044 cp = line + 1; 3045 shellCommand: 3046 for (; isspace ((unsigned char)*cp); cp++) { 3047 continue; 3048 } 3049 if (*cp) { 3050 if (!inLine) 3051 Parse_Error(PARSE_FATAL, 3052 "Unassociated shell command \"%s\"", 3053 cp); 3054 /* 3055 * So long as it's not a blank line and we're actually 3056 * in a dependency spec, add the command to the list of 3057 * commands of all targets in the dependency spec 3058 */ 3059 if (targets) { 3060 cp = bmake_strdup(cp); 3061 Lst_ForEach(targets, ParseAddCmd, cp); 3062 #ifdef CLEANUP 3063 Lst_AtEnd(targCmds, cp); 3064 #endif 3065 } 3066 } 3067 continue; 3068 } 3069 3070 #ifdef SYSVINCLUDE 3071 if (((strncmp(line, "include", 7) == 0 && 3072 isspace((unsigned char) line[7])) || 3073 ((line[0] == 's' || line[0] == '-') && 3074 strncmp(&line[1], "include", 7) == 0 && 3075 isspace((unsigned char) line[8]))) && 3076 strchr(line, ':') == NULL) { 3077 /* 3078 * It's an S3/S5-style "include". 3079 */ 3080 ParseTraditionalInclude(line); 3081 continue; 3082 } 3083 #endif 3084 #ifdef GMAKEEXPORT 3085 if (strncmp(line, "export", 6) == 0 && 3086 isspace((unsigned char) line[6]) && 3087 strchr(line, ':') == NULL) { 3088 /* 3089 * It's a Gmake "export". 3090 */ 3091 ParseGmakeExport(line); 3092 continue; 3093 } 3094 #endif 3095 if (Parse_IsVar(line)) { 3096 ParseFinishLine(); 3097 Parse_DoVar(line, VAR_GLOBAL); 3098 continue; 3099 } 3100 3101 #ifndef POSIX 3102 /* 3103 * To make life easier on novices, if the line is indented we 3104 * first make sure the line has a dependency operator in it. 3105 * If it doesn't have an operator and we're in a dependency 3106 * line's script, we assume it's actually a shell command 3107 * and add it to the current list of targets. 3108 */ 3109 cp = line; 3110 if (isspace((unsigned char) line[0])) { 3111 while ((*cp != '\0') && isspace((unsigned char) *cp)) 3112 cp++; 3113 while (*cp && (ParseIsEscaped(line, cp) || 3114 (*cp != ':') && (*cp != '!'))) { 3115 cp++; 3116 } 3117 if (*cp == '\0') { 3118 if (inLine) { 3119 Parse_Error(PARSE_WARNING, 3120 "Shell command needs a leading tab"); 3121 goto shellCommand; 3122 } 3123 } 3124 } 3125 #endif 3126 ParseFinishLine(); 3127 3128 /* 3129 * For some reason - probably to make the parser impossible - 3130 * a ';' can be used to separate commands from dependencies. 3131 * Attempt to avoid ';' inside substitution patterns. 3132 */ 3133 { 3134 int level = 0; 3135 3136 for (cp = line; *cp != 0; cp++) { 3137 if (*cp == '\\' && cp[1] != 0) { 3138 cp++; 3139 continue; 3140 } 3141 if (*cp == '$' && 3142 (cp[1] == '(' || cp[1] == '{')) { 3143 level++; 3144 continue; 3145 } 3146 if (level > 0) { 3147 if (*cp == ')' || *cp == '}') { 3148 level--; 3149 continue; 3150 } 3151 } else if (*cp == ';') { 3152 break; 3153 } 3154 } 3155 } 3156 if (*cp != 0) 3157 /* Terminate the dependency list at the ';' */ 3158 *cp++ = 0; 3159 else 3160 cp = NULL; 3161 3162 /* 3163 * We now know it's a dependency line so it needs to have all 3164 * variables expanded before being parsed. Tell the variable 3165 * module to complain if some variable is undefined... 3166 */ 3167 line = Var_Subst(NULL, line, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES); 3168 3169 /* 3170 * Need a non-circular list for the target nodes 3171 */ 3172 if (targets) 3173 Lst_Destroy(targets, NULL); 3174 3175 targets = Lst_Init(FALSE); 3176 inLine = TRUE; 3177 3178 ParseDoDependency(line); 3179 free(line); 3180 3181 /* If there were commands after a ';', add them now */ 3182 if (cp != NULL) { 3183 goto shellCommand; 3184 } 3185 } 3186 /* 3187 * Reached EOF, but it may be just EOF of an include file... 3188 */ 3189 } while (ParseEOF() == CONTINUE); 3190 3191 if (fatals) { 3192 (void)fflush(stdout); 3193 (void)fprintf(stderr, 3194 "%s: Fatal errors encountered -- cannot continue", 3195 progname); 3196 PrintOnError(NULL, NULL); 3197 exit(1); 3198 } 3199 } 3200 3201 /*- 3202 *--------------------------------------------------------------------- 3203 * Parse_Init -- 3204 * initialize the parsing module 3205 * 3206 * Results: 3207 * none 3208 * 3209 * Side Effects: 3210 * the parseIncPath list is initialized... 3211 *--------------------------------------------------------------------- 3212 */ 3213 void 3214 Parse_Init(void) 3215 { 3216 mainNode = NULL; 3217 parseIncPath = Lst_Init(FALSE); 3218 sysIncPath = Lst_Init(FALSE); 3219 defIncPath = Lst_Init(FALSE); 3220 includes = Lst_Init(FALSE); 3221 #ifdef CLEANUP 3222 targCmds = Lst_Init(FALSE); 3223 #endif 3224 } 3225 3226 void 3227 Parse_End(void) 3228 { 3229 #ifdef CLEANUP 3230 Lst_Destroy(targCmds, (FreeProc *)free); 3231 if (targets) 3232 Lst_Destroy(targets, NULL); 3233 Lst_Destroy(defIncPath, Dir_Destroy); 3234 Lst_Destroy(sysIncPath, Dir_Destroy); 3235 Lst_Destroy(parseIncPath, Dir_Destroy); 3236 Lst_Destroy(includes, NULL); /* Should be empty now */ 3237 #endif 3238 } 3239 3240 3241 /*- 3242 *----------------------------------------------------------------------- 3243 * Parse_MainName -- 3244 * Return a Lst of the main target to create for main()'s sake. If 3245 * no such target exists, we Punt with an obnoxious error message. 3246 * 3247 * Results: 3248 * A Lst of the single node to create. 3249 * 3250 * Side Effects: 3251 * None. 3252 * 3253 *----------------------------------------------------------------------- 3254 */ 3255 Lst 3256 Parse_MainName(void) 3257 { 3258 Lst mainList; /* result list */ 3259 3260 mainList = Lst_Init(FALSE); 3261 3262 if (mainNode == NULL) { 3263 Punt("no target to make."); 3264 /*NOTREACHED*/ 3265 } else if (mainNode->type & OP_DOUBLEDEP) { 3266 (void)Lst_AtEnd(mainList, mainNode); 3267 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3268 } 3269 else 3270 (void)Lst_AtEnd(mainList, mainNode); 3271 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3272 return (mainList); 3273 } 3274 3275 /*- 3276 *----------------------------------------------------------------------- 3277 * ParseMark -- 3278 * Add the filename and lineno to the GNode so that we remember 3279 * where it was first defined. 3280 * 3281 * Side Effects: 3282 * None. 3283 * 3284 *----------------------------------------------------------------------- 3285 */ 3286 static void 3287 ParseMark(GNode *gn) 3288 { 3289 gn->fname = curFile->fname; 3290 gn->lineno = curFile->lineno; 3291 } 3292
Indexes created Mon Sep 22 05:09:51 GMT 2025