parse.c revision 1.221
1 /* $NetBSD: parse.c,v 1.221 2017/04/16 21:03:13 riastradh 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 1.221 2017/04/16 21:03:13 riastradh 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 1.221 2017/04/16 21:03:13 riastradh 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 <limits.h> 133 #include <stdarg.h> 134 #include <stdio.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 long pagesize; 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 pagesize = sysconf(_SC_PAGESIZE); 507 if (pagesize <= 0) { 508 pagesize = 0x1000; 509 } 510 /* round size up to a page */ 511 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize); 512 513 /* 514 * XXX hack for dealing with empty files; remove when 515 * we're no longer limited by interfacing to the old 516 * logic elsewhere in this file. 517 */ 518 if (lf->maplen == 0) { 519 lf->maplen = pagesize; 520 } 521 522 /* 523 * FUTURE: remove PROT_WRITE when the parser no longer 524 * needs to scribble on the input. 525 */ 526 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE, 527 MAP_FILE|MAP_COPY, fd, 0); 528 if (lf->buf != MAP_FAILED) { 529 /* succeeded */ 530 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') { 531 char *b = bmake_malloc(lf->len + 1); 532 b[lf->len] = '\n'; 533 memcpy(b, lf->buf, lf->len++); 534 munmap(lf->buf, lf->maplen); 535 lf->maplen = 0; 536 lf->buf = b; 537 } 538 goto done; 539 } 540 } 541 542 /* cannot mmap; load the traditional way */ 543 544 lf->maplen = 0; 545 lf->len = 1024; 546 lf->buf = bmake_malloc(lf->len); 547 548 bufpos = 0; 549 while (1) { 550 assert(bufpos <= lf->len); 551 if (bufpos == lf->len) { 552 if (lf->len > SIZE_MAX/2) { 553 errno = EFBIG; 554 Error("%s: file too large", path); 555 exit(1); 556 } 557 lf->len *= 2; 558 lf->buf = bmake_realloc(lf->buf, lf->len); 559 } 560 assert(bufpos < lf->len); 561 result = read(fd, lf->buf + bufpos, lf->len - bufpos); 562 if (result < 0) { 563 Error("%s: read error: %s", path, strerror(errno)); 564 exit(1); 565 } 566 if (result == 0) { 567 break; 568 } 569 bufpos += result; 570 } 571 assert(bufpos <= lf->len); 572 lf->len = bufpos; 573 574 /* truncate malloc region to actual length (maybe not useful) */ 575 if (lf->len > 0) { 576 /* as for mmap case, ensure trailing \n */ 577 if (lf->buf[lf->len - 1] != '\n') 578 lf->len++; 579 lf->buf = bmake_realloc(lf->buf, lf->len); 580 lf->buf[lf->len - 1] = '\n'; 581 } 582 583 done: 584 if (path != NULL) { 585 close(fd); 586 } 587 return lf; 588 } 589 590 //////////////////////////////////////////////////////////// 591 // old code 592 593 /*- 594 *---------------------------------------------------------------------- 595 * ParseIsEscaped -- 596 * Check if the current character is escaped on the current line 597 * 598 * Results: 599 * 0 if the character is not backslash escaped, 1 otherwise 600 * 601 * Side Effects: 602 * None 603 *---------------------------------------------------------------------- 604 */ 605 static int 606 ParseIsEscaped(const char *line, const char *c) 607 { 608 int active = 0; 609 for (;;) { 610 if (line == c) 611 return active; 612 if (*--c != '\\') 613 return active; 614 active = !active; 615 } 616 } 617 618 /*- 619 *---------------------------------------------------------------------- 620 * ParseFindKeyword -- 621 * Look in the table of keywords for one matching the given string. 622 * 623 * Input: 624 * str String to find 625 * 626 * Results: 627 * The index of the keyword, or -1 if it isn't there. 628 * 629 * Side Effects: 630 * None 631 *---------------------------------------------------------------------- 632 */ 633 static int 634 ParseFindKeyword(const char *str) 635 { 636 int start, end, cur; 637 int diff; 638 639 start = 0; 640 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 641 642 do { 643 cur = start + ((end - start) / 2); 644 diff = strcmp(str, parseKeywords[cur].name); 645 646 if (diff == 0) { 647 return (cur); 648 } else if (diff < 0) { 649 end = cur - 1; 650 } else { 651 start = cur + 1; 652 } 653 } while (start <= end); 654 return (-1); 655 } 656 657 /*- 658 * ParseVErrorInternal -- 659 * Error message abort function for parsing. Prints out the context 660 * of the error (line number and file) as well as the message with 661 * two optional arguments. 662 * 663 * Results: 664 * None 665 * 666 * Side Effects: 667 * "fatals" is incremented if the level is PARSE_FATAL. 668 */ 669 /* VARARGS */ 670 static void 671 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type, 672 const char *fmt, va_list ap) 673 { 674 static Boolean fatal_warning_error_printed = FALSE; 675 676 (void)fprintf(f, "%s: ", progname); 677 678 if (cfname != NULL) { 679 (void)fprintf(f, "\""); 680 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) { 681 char *cp; 682 const char *dir; 683 684 /* 685 * Nothing is more annoying than not knowing 686 * which Makefile is the culprit. 687 */ 688 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 689 if (dir == NULL || *dir == '\0' || 690 (*dir == '.' && dir[1] == '\0')) 691 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 692 if (dir == NULL) 693 dir = "."; 694 695 (void)fprintf(f, "%s/%s", dir, cfname); 696 } else 697 (void)fprintf(f, "%s", cfname); 698 699 (void)fprintf(f, "\" line %d: ", (int)clineno); 700 } 701 if (type == PARSE_WARNING) 702 (void)fprintf(f, "warning: "); 703 (void)vfprintf(f, fmt, ap); 704 (void)fprintf(f, "\n"); 705 (void)fflush(f); 706 if (type == PARSE_FATAL || parseWarnFatal) 707 fatals += 1; 708 if (parseWarnFatal && !fatal_warning_error_printed) { 709 Error("parsing warnings being treated as errors"); 710 fatal_warning_error_printed = TRUE; 711 } 712 } 713 714 /*- 715 * ParseErrorInternal -- 716 * Error function 717 * 718 * Results: 719 * None 720 * 721 * Side Effects: 722 * None 723 */ 724 /* VARARGS */ 725 static void 726 ParseErrorInternal(const char *cfname, size_t clineno, int type, 727 const char *fmt, ...) 728 { 729 va_list ap; 730 731 va_start(ap, fmt); 732 (void)fflush(stdout); 733 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap); 734 va_end(ap); 735 736 if (debug_file != stderr && debug_file != stdout) { 737 va_start(ap, fmt); 738 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap); 739 va_end(ap); 740 } 741 } 742 743 /*- 744 * Parse_Error -- 745 * External interface to ParseErrorInternal; uses the default filename 746 * Line number. 747 * 748 * Results: 749 * None 750 * 751 * Side Effects: 752 * None 753 */ 754 /* VARARGS */ 755 void 756 Parse_Error(int type, const char *fmt, ...) 757 { 758 va_list ap; 759 const char *fname; 760 size_t lineno; 761 762 if (curFile == NULL) { 763 fname = NULL; 764 lineno = 0; 765 } else { 766 fname = curFile->fname; 767 lineno = curFile->lineno; 768 } 769 770 va_start(ap, fmt); 771 (void)fflush(stdout); 772 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap); 773 va_end(ap); 774 775 if (debug_file != stderr && debug_file != stdout) { 776 va_start(ap, fmt); 777 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap); 778 va_end(ap); 779 } 780 } 781 782 783 /* 784 * ParseMessage 785 * Parse a .info .warning or .error directive 786 * 787 * The input is the line minus the ".". We substitute 788 * variables, print the message and exit(1) (for .error) or just print 789 * a warning if the directive is malformed. 790 */ 791 static Boolean 792 ParseMessage(char *line) 793 { 794 int mtype; 795 796 switch(*line) { 797 case 'i': 798 mtype = 0; 799 break; 800 case 'w': 801 mtype = PARSE_WARNING; 802 break; 803 case 'e': 804 mtype = PARSE_FATAL; 805 break; 806 default: 807 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line); 808 return FALSE; 809 } 810 811 while (isalpha((unsigned char)*line)) 812 line++; 813 if (!isspace((unsigned char)*line)) 814 return FALSE; /* not for us */ 815 while (isspace((unsigned char)*line)) 816 line++; 817 818 line = Var_Subst(NULL, line, VAR_CMD, VARF_WANTRES); 819 Parse_Error(mtype, "%s", line); 820 free(line); 821 822 if (mtype == PARSE_FATAL) { 823 /* Terminate immediately. */ 824 exit(1); 825 } 826 return TRUE; 827 } 828 829 /*- 830 *--------------------------------------------------------------------- 831 * ParseLinkSrc -- 832 * Link the parent node to its new child. Used in a Lst_ForEach by 833 * ParseDoDependency. If the specType isn't 'Not', the parent 834 * isn't linked as a parent of the child. 835 * 836 * Input: 837 * pgnp The parent node 838 * cgpn The child node 839 * 840 * Results: 841 * Always = 0 842 * 843 * Side Effects: 844 * New elements are added to the parents list of cgn and the 845 * children list of cgn. the unmade field of pgn is updated 846 * to reflect the additional child. 847 *--------------------------------------------------------------------- 848 */ 849 static int 850 ParseLinkSrc(void *pgnp, void *cgnp) 851 { 852 GNode *pgn = (GNode *)pgnp; 853 GNode *cgn = (GNode *)cgnp; 854 855 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 856 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 857 (void)Lst_AtEnd(pgn->children, cgn); 858 if (specType == Not) 859 (void)Lst_AtEnd(cgn->parents, pgn); 860 pgn->unmade += 1; 861 if (DEBUG(PARSE)) { 862 fprintf(debug_file, "# %s: added child %s - %s\n", __func__, 863 pgn->name, cgn->name); 864 Targ_PrintNode(pgn, 0); 865 Targ_PrintNode(cgn, 0); 866 } 867 return (0); 868 } 869 870 /*- 871 *--------------------------------------------------------------------- 872 * ParseDoOp -- 873 * Apply the parsed operator to the given target node. Used in a 874 * Lst_ForEach call by ParseDoDependency once all targets have 875 * been found and their operator parsed. If the previous and new 876 * operators are incompatible, a major error is taken. 877 * 878 * Input: 879 * gnp The node to which the operator is to be applied 880 * opp The operator to apply 881 * 882 * Results: 883 * Always 0 884 * 885 * Side Effects: 886 * The type field of the node is altered to reflect any new bits in 887 * the op. 888 *--------------------------------------------------------------------- 889 */ 890 static int 891 ParseDoOp(void *gnp, void *opp) 892 { 893 GNode *gn = (GNode *)gnp; 894 int op = *(int *)opp; 895 /* 896 * If the dependency mask of the operator and the node don't match and 897 * the node has actually had an operator applied to it before, and 898 * the operator actually has some dependency information in it, complain. 899 */ 900 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 901 !OP_NOP(gn->type) && !OP_NOP(op)) 902 { 903 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 904 return (1); 905 } 906 907 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 908 /* 909 * If the node was the object of a :: operator, we need to create a 910 * new instance of it for the children and commands on this dependency 911 * line. The new instance is placed on the 'cohorts' list of the 912 * initial one (note the initial one is not on its own cohorts list) 913 * and the new instance is linked to all parents of the initial 914 * instance. 915 */ 916 GNode *cohort; 917 918 /* 919 * Propagate copied bits to the initial node. They'll be propagated 920 * back to the rest of the cohorts later. 921 */ 922 gn->type |= op & ~OP_OPMASK; 923 924 cohort = Targ_FindNode(gn->name, TARG_NOHASH); 925 if (doing_depend) 926 ParseMark(cohort); 927 /* 928 * Make the cohort invisible as well to avoid duplicating it into 929 * other variables. True, parents of this target won't tend to do 930 * anything with their local variables, but better safe than 931 * sorry. (I think this is pointless now, since the relevant list 932 * traversals will no longer see this node anyway. -mycroft) 933 */ 934 cohort->type = op | OP_INVISIBLE; 935 (void)Lst_AtEnd(gn->cohorts, cohort); 936 cohort->centurion = gn; 937 gn->unmade_cohorts += 1; 938 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d", 939 gn->unmade_cohorts); 940 } else { 941 /* 942 * We don't want to nuke any previous flags (whatever they were) so we 943 * just OR the new operator into the old 944 */ 945 gn->type |= op; 946 } 947 948 return (0); 949 } 950 951 /*- 952 *--------------------------------------------------------------------- 953 * ParseDoSrc -- 954 * Given the name of a source, figure out if it is an attribute 955 * and apply it to the targets if it is. Else decide if there is 956 * some attribute which should be applied *to* the source because 957 * of some special target and apply it if so. Otherwise, make the 958 * source be a child of the targets in the list 'targets' 959 * 960 * Input: 961 * tOp operator (if any) from special targets 962 * src name of the source to handle 963 * 964 * Results: 965 * None 966 * 967 * Side Effects: 968 * Operator bits may be added to the list of targets or to the source. 969 * The targets may have a new source added to their lists of children. 970 *--------------------------------------------------------------------- 971 */ 972 static void 973 ParseDoSrc(int tOp, const char *src) 974 { 975 GNode *gn = NULL; 976 static int wait_number = 0; 977 char wait_src[16]; 978 979 if (*src == '.' && isupper ((unsigned char)src[1])) { 980 int keywd = ParseFindKeyword(src); 981 if (keywd != -1) { 982 int op = parseKeywords[keywd].op; 983 if (op != 0) { 984 Lst_ForEach(targets, ParseDoOp, &op); 985 return; 986 } 987 if (parseKeywords[keywd].spec == Wait) { 988 /* 989 * We add a .WAIT node in the dependency list. 990 * After any dynamic dependencies (and filename globbing) 991 * have happened, it is given a dependency on the each 992 * previous child back to and previous .WAIT node. 993 * The next child won't be scheduled until the .WAIT node 994 * is built. 995 * We give each .WAIT node a unique name (mainly for diag). 996 */ 997 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number); 998 gn = Targ_FindNode(wait_src, TARG_NOHASH); 999 if (doing_depend) 1000 ParseMark(gn); 1001 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN; 1002 Lst_ForEach(targets, ParseLinkSrc, gn); 1003 return; 1004 } 1005 } 1006 } 1007 1008 switch (specType) { 1009 case Main: 1010 /* 1011 * If we have noted the existence of a .MAIN, it means we need 1012 * to add the sources of said target to the list of things 1013 * to create. The string 'src' is likely to be free, so we 1014 * must make a new copy of it. Note that this will only be 1015 * invoked if the user didn't specify a target on the command 1016 * line. This is to allow #ifmake's to succeed, or something... 1017 */ 1018 (void)Lst_AtEnd(create, bmake_strdup(src)); 1019 /* 1020 * Add the name to the .TARGETS variable as well, so the user can 1021 * employ that, if desired. 1022 */ 1023 Var_Append(".TARGETS", src, VAR_GLOBAL); 1024 return; 1025 1026 case Order: 1027 /* 1028 * Create proper predecessor/successor links between the previous 1029 * source and the current one. 1030 */ 1031 gn = Targ_FindNode(src, TARG_CREATE); 1032 if (doing_depend) 1033 ParseMark(gn); 1034 if (predecessor != NULL) { 1035 (void)Lst_AtEnd(predecessor->order_succ, gn); 1036 (void)Lst_AtEnd(gn->order_pred, predecessor); 1037 if (DEBUG(PARSE)) { 1038 fprintf(debug_file, "# %s: added Order dependency %s - %s\n", 1039 __func__, predecessor->name, gn->name); 1040 Targ_PrintNode(predecessor, 0); 1041 Targ_PrintNode(gn, 0); 1042 } 1043 } 1044 /* 1045 * The current source now becomes the predecessor for the next one. 1046 */ 1047 predecessor = gn; 1048 break; 1049 1050 default: 1051 /* 1052 * If the source is not an attribute, we need to find/create 1053 * a node for it. After that we can apply any operator to it 1054 * from a special target or link it to its parents, as 1055 * appropriate. 1056 * 1057 * In the case of a source that was the object of a :: operator, 1058 * the attribute is applied to all of its instances (as kept in 1059 * the 'cohorts' list of the node) or all the cohorts are linked 1060 * to all the targets. 1061 */ 1062 1063 /* Find/create the 'src' node and attach to all targets */ 1064 gn = Targ_FindNode(src, TARG_CREATE); 1065 if (doing_depend) 1066 ParseMark(gn); 1067 if (tOp) { 1068 gn->type |= tOp; 1069 } else { 1070 Lst_ForEach(targets, ParseLinkSrc, gn); 1071 } 1072 break; 1073 } 1074 } 1075 1076 /*- 1077 *----------------------------------------------------------------------- 1078 * ParseFindMain -- 1079 * Find a real target in the list and set it to be the main one. 1080 * Called by ParseDoDependency when a main target hasn't been found 1081 * yet. 1082 * 1083 * Input: 1084 * gnp Node to examine 1085 * 1086 * Results: 1087 * 0 if main not found yet, 1 if it is. 1088 * 1089 * Side Effects: 1090 * mainNode is changed and Targ_SetMain is called. 1091 * 1092 *----------------------------------------------------------------------- 1093 */ 1094 static int 1095 ParseFindMain(void *gnp, void *dummy MAKE_ATTR_UNUSED) 1096 { 1097 GNode *gn = (GNode *)gnp; 1098 if ((gn->type & OP_NOTARGET) == 0) { 1099 mainNode = gn; 1100 Targ_SetMain(gn); 1101 return 1; 1102 } else { 1103 return 0; 1104 } 1105 } 1106 1107 /*- 1108 *----------------------------------------------------------------------- 1109 * ParseAddDir -- 1110 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 1111 * 1112 * Results: 1113 * === 0 1114 * 1115 * Side Effects: 1116 * See Dir_AddDir. 1117 * 1118 *----------------------------------------------------------------------- 1119 */ 1120 static int 1121 ParseAddDir(void *path, void *name) 1122 { 1123 (void)Dir_AddDir((Lst) path, (char *)name); 1124 return(0); 1125 } 1126 1127 /*- 1128 *----------------------------------------------------------------------- 1129 * ParseClearPath -- 1130 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 1131 * 1132 * Results: 1133 * === 0 1134 * 1135 * Side Effects: 1136 * See Dir_ClearPath 1137 * 1138 *----------------------------------------------------------------------- 1139 */ 1140 static int 1141 ParseClearPath(void *path, void *dummy MAKE_ATTR_UNUSED) 1142 { 1143 Dir_ClearPath((Lst) path); 1144 return 0; 1145 } 1146 1147 /*- 1148 *--------------------------------------------------------------------- 1149 * ParseDoDependency -- 1150 * Parse the dependency line in line. 1151 * 1152 * Input: 1153 * line the line to parse 1154 * 1155 * Results: 1156 * None 1157 * 1158 * Side Effects: 1159 * The nodes of the sources are linked as children to the nodes of the 1160 * targets. Some nodes may be created. 1161 * 1162 * We parse a dependency line by first extracting words from the line and 1163 * finding nodes in the list of all targets with that name. This is done 1164 * until a character is encountered which is an operator character. Currently 1165 * these are only ! and :. At this point the operator is parsed and the 1166 * pointer into the line advanced until the first source is encountered. 1167 * The parsed operator is applied to each node in the 'targets' list, 1168 * which is where the nodes found for the targets are kept, by means of 1169 * the ParseDoOp function. 1170 * The sources are read in much the same way as the targets were except 1171 * that now they are expanded using the wildcarding scheme of the C-Shell 1172 * and all instances of the resulting words in the list of all targets 1173 * are found. Each of the resulting nodes is then linked to each of the 1174 * targets as one of its children. 1175 * Certain targets are handled specially. These are the ones detailed 1176 * by the specType variable. 1177 * The storing of transformation rules is also taken care of here. 1178 * A target is recognized as a transformation rule by calling 1179 * Suff_IsTransform. If it is a transformation rule, its node is gotten 1180 * from the suffix module via Suff_AddTransform rather than the standard 1181 * Targ_FindNode in the target module. 1182 *--------------------------------------------------------------------- 1183 */ 1184 static void 1185 ParseDoDependency(char *line) 1186 { 1187 char *cp; /* our current position */ 1188 GNode *gn = NULL; /* a general purpose temporary node */ 1189 int op; /* the operator on the line */ 1190 char savec; /* a place to save a character */ 1191 Lst paths; /* List of search paths to alter when parsing 1192 * a list of .PATH targets */ 1193 int tOp; /* operator from special target */ 1194 Lst sources; /* list of archive source names after 1195 * expansion */ 1196 Lst curTargs; /* list of target names to be found and added 1197 * to the targets list */ 1198 char *lstart = line; 1199 1200 if (DEBUG(PARSE)) 1201 fprintf(debug_file, "ParseDoDependency(%s)\n", line); 1202 tOp = 0; 1203 1204 specType = Not; 1205 paths = NULL; 1206 1207 curTargs = Lst_Init(FALSE); 1208 1209 /* 1210 * First, grind through the targets. 1211 */ 1212 1213 do { 1214 /* 1215 * Here LINE points to the beginning of the next word, and 1216 * LSTART points to the actual beginning of the line. 1217 */ 1218 1219 /* Find the end of the next word. */ 1220 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) || 1221 !(isspace((unsigned char)*cp) || 1222 *cp == '!' || *cp == ':' || *cp == LPAREN)); 1223 cp++) { 1224 if (*cp == '$') { 1225 /* 1226 * Must be a dynamic source (would have been expanded 1227 * otherwise), so call the Var module to parse the puppy 1228 * so we can safely advance beyond it...There should be 1229 * no errors in this, as they would have been discovered 1230 * in the initial Var_Subst and we wouldn't be here. 1231 */ 1232 int length; 1233 void *freeIt; 1234 1235 (void)Var_Parse(cp, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES, 1236 &length, &freeIt); 1237 free(freeIt); 1238 cp += length-1; 1239 } 1240 } 1241 1242 /* 1243 * If the word is followed by a left parenthesis, it's the 1244 * name of an object file inside an archive (ar file). 1245 */ 1246 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1247 /* 1248 * Archives must be handled specially to make sure the OP_ARCHV 1249 * flag is set in their 'type' field, for one thing, and because 1250 * things like "archive(file1.o file2.o file3.o)" are permissible. 1251 * Arch_ParseArchive will set 'line' to be the first non-blank 1252 * after the archive-spec. It creates/finds nodes for the members 1253 * and places them on the given list, returning SUCCESS if all 1254 * went well and FAILURE if there was an error in the 1255 * specification. On error, line should remain untouched. 1256 */ 1257 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1258 Parse_Error(PARSE_FATAL, 1259 "Error in archive specification: \"%s\"", line); 1260 goto out; 1261 } else { 1262 /* Done with this word; on to the next. */ 1263 cp = line; 1264 continue; 1265 } 1266 } 1267 1268 if (!*cp) { 1269 /* 1270 * We got to the end of the line while we were still 1271 * looking at targets. 1272 * 1273 * Ending a dependency line without an operator is a Bozo 1274 * no-no. As a heuristic, this is also often triggered by 1275 * undetected conflicts from cvs/rcs merges. 1276 */ 1277 if ((strncmp(line, "<<<<<<", 6) == 0) || 1278 (strncmp(line, "======", 6) == 0) || 1279 (strncmp(line, ">>>>>>", 6) == 0)) 1280 Parse_Error(PARSE_FATAL, 1281 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1282 else 1283 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1284 : "Need an operator"); 1285 goto out; 1286 } 1287 1288 /* Insert a null terminator. */ 1289 savec = *cp; 1290 *cp = '\0'; 1291 1292 /* 1293 * Got the word. See if it's a special target and if so set 1294 * specType to match it. 1295 */ 1296 if (*line == '.' && isupper ((unsigned char)line[1])) { 1297 /* 1298 * See if the target is a special target that must have it 1299 * or its sources handled specially. 1300 */ 1301 int keywd = ParseFindKeyword(line); 1302 if (keywd != -1) { 1303 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1304 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1305 goto out; 1306 } 1307 1308 specType = parseKeywords[keywd].spec; 1309 tOp = parseKeywords[keywd].op; 1310 1311 /* 1312 * Certain special targets have special semantics: 1313 * .PATH Have to set the dirSearchPath 1314 * variable too 1315 * .MAIN Its sources are only used if 1316 * nothing has been specified to 1317 * create. 1318 * .DEFAULT Need to create a node to hang 1319 * commands on, but we don't want 1320 * it in the graph, nor do we want 1321 * it to be the Main Target, so we 1322 * create it, set OP_NOTMAIN and 1323 * add it to the list, setting 1324 * DEFAULT to the new node for 1325 * later use. We claim the node is 1326 * A transformation rule to make 1327 * life easier later, when we'll 1328 * use Make_HandleUse to actually 1329 * apply the .DEFAULT commands. 1330 * .PHONY The list of targets 1331 * .NOPATH Don't search for file in the path 1332 * .STALE 1333 * .BEGIN 1334 * .END 1335 * .ERROR 1336 * .DELETE_ON_ERROR 1337 * .INTERRUPT Are not to be considered the 1338 * main target. 1339 * .NOTPARALLEL Make only one target at a time. 1340 * .SINGLESHELL Create a shell for each command. 1341 * .ORDER Must set initial predecessor to NULL 1342 */ 1343 switch (specType) { 1344 case ExPath: 1345 if (paths == NULL) { 1346 paths = Lst_Init(FALSE); 1347 } 1348 (void)Lst_AtEnd(paths, dirSearchPath); 1349 break; 1350 case Main: 1351 if (!Lst_IsEmpty(create)) { 1352 specType = Not; 1353 } 1354 break; 1355 case Begin: 1356 case End: 1357 case Stale: 1358 case dotError: 1359 case Interrupt: 1360 gn = Targ_FindNode(line, TARG_CREATE); 1361 if (doing_depend) 1362 ParseMark(gn); 1363 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1364 (void)Lst_AtEnd(targets, gn); 1365 break; 1366 case Default: 1367 gn = Targ_NewGN(".DEFAULT"); 1368 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1369 (void)Lst_AtEnd(targets, gn); 1370 DEFAULT = gn; 1371 break; 1372 case DeleteOnError: 1373 deleteOnError = TRUE; 1374 break; 1375 case NotParallel: 1376 maxJobs = 1; 1377 break; 1378 case SingleShell: 1379 compatMake = TRUE; 1380 break; 1381 case Order: 1382 predecessor = NULL; 1383 break; 1384 default: 1385 break; 1386 } 1387 } else if (strncmp(line, ".PATH", 5) == 0) { 1388 /* 1389 * .PATH<suffix> has to be handled specially. 1390 * Call on the suffix module to give us a path to 1391 * modify. 1392 */ 1393 Lst path; 1394 1395 specType = ExPath; 1396 path = Suff_GetPath(&line[5]); 1397 if (path == NULL) { 1398 Parse_Error(PARSE_FATAL, 1399 "Suffix '%s' not defined (yet)", 1400 &line[5]); 1401 goto out; 1402 } else { 1403 if (paths == NULL) { 1404 paths = Lst_Init(FALSE); 1405 } 1406 (void)Lst_AtEnd(paths, path); 1407 } 1408 } 1409 } 1410 1411 /* 1412 * Have word in line. Get or create its node and stick it at 1413 * the end of the targets list 1414 */ 1415 if ((specType == Not) && (*line != '\0')) { 1416 if (Dir_HasWildcards(line)) { 1417 /* 1418 * Targets are to be sought only in the current directory, 1419 * so create an empty path for the thing. Note we need to 1420 * use Dir_Destroy in the destruction of the path as the 1421 * Dir module could have added a directory to the path... 1422 */ 1423 Lst emptyPath = Lst_Init(FALSE); 1424 1425 Dir_Expand(line, emptyPath, curTargs); 1426 1427 Lst_Destroy(emptyPath, Dir_Destroy); 1428 } else { 1429 /* 1430 * No wildcards, but we want to avoid code duplication, 1431 * so create a list with the word on it. 1432 */ 1433 (void)Lst_AtEnd(curTargs, line); 1434 } 1435 1436 /* Apply the targets. */ 1437 1438 while(!Lst_IsEmpty(curTargs)) { 1439 char *targName = (char *)Lst_DeQueue(curTargs); 1440 1441 if (!Suff_IsTransform (targName)) { 1442 gn = Targ_FindNode(targName, TARG_CREATE); 1443 } else { 1444 gn = Suff_AddTransform(targName); 1445 } 1446 if (doing_depend) 1447 ParseMark(gn); 1448 1449 (void)Lst_AtEnd(targets, gn); 1450 } 1451 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1452 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1453 } 1454 1455 /* Don't need the inserted null terminator any more. */ 1456 *cp = savec; 1457 1458 /* 1459 * If it is a special type and not .PATH, it's the only target we 1460 * allow on this line... 1461 */ 1462 if (specType != Not && specType != ExPath) { 1463 Boolean warning = FALSE; 1464 1465 while (*cp && (ParseIsEscaped(lstart, cp) || 1466 ((*cp != '!') && (*cp != ':')))) { 1467 if (ParseIsEscaped(lstart, cp) || 1468 (*cp != ' ' && *cp != '\t')) { 1469 warning = TRUE; 1470 } 1471 cp++; 1472 } 1473 if (warning) { 1474 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1475 } 1476 } else { 1477 while (*cp && isspace ((unsigned char)*cp)) { 1478 cp++; 1479 } 1480 } 1481 line = cp; 1482 } while (*line && (ParseIsEscaped(lstart, line) || 1483 ((*line != '!') && (*line != ':')))); 1484 1485 /* 1486 * Don't need the list of target names anymore... 1487 */ 1488 Lst_Destroy(curTargs, NULL); 1489 curTargs = NULL; 1490 1491 if (!Lst_IsEmpty(targets)) { 1492 switch(specType) { 1493 default: 1494 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1495 break; 1496 case Default: 1497 case Stale: 1498 case Begin: 1499 case End: 1500 case dotError: 1501 case Interrupt: 1502 /* 1503 * These four create nodes on which to hang commands, so 1504 * targets shouldn't be empty... 1505 */ 1506 case Not: 1507 /* 1508 * Nothing special here -- targets can be empty if it wants. 1509 */ 1510 break; 1511 } 1512 } 1513 1514 /* 1515 * Have now parsed all the target names. Must parse the operator next. The 1516 * result is left in op . 1517 */ 1518 if (*cp == '!') { 1519 op = OP_FORCE; 1520 } else if (*cp == ':') { 1521 if (cp[1] == ':') { 1522 op = OP_DOUBLEDEP; 1523 cp++; 1524 } else { 1525 op = OP_DEPENDS; 1526 } 1527 } else { 1528 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive" 1529 : "Missing dependency operator"); 1530 goto out; 1531 } 1532 1533 /* Advance beyond the operator */ 1534 cp++; 1535 1536 /* 1537 * Apply the operator to the target. This is how we remember which 1538 * operator a target was defined with. It fails if the operator 1539 * used isn't consistent across all references. 1540 */ 1541 Lst_ForEach(targets, ParseDoOp, &op); 1542 1543 /* 1544 * Onward to the sources. 1545 * 1546 * LINE will now point to the first source word, if any, or the 1547 * end of the string if not. 1548 */ 1549 while (*cp && isspace ((unsigned char)*cp)) { 1550 cp++; 1551 } 1552 line = cp; 1553 1554 /* 1555 * Several special targets take different actions if present with no 1556 * sources: 1557 * a .SUFFIXES line with no sources clears out all old suffixes 1558 * a .PRECIOUS line makes all targets precious 1559 * a .IGNORE line ignores errors for all targets 1560 * a .SILENT line creates silence when making all targets 1561 * a .PATH removes all directories from the search path(s). 1562 */ 1563 if (!*line) { 1564 switch (specType) { 1565 case Suffixes: 1566 Suff_ClearSuffixes(); 1567 break; 1568 case Precious: 1569 allPrecious = TRUE; 1570 break; 1571 case Ignore: 1572 ignoreErrors = TRUE; 1573 break; 1574 case Silent: 1575 beSilent = TRUE; 1576 break; 1577 case ExPath: 1578 Lst_ForEach(paths, ParseClearPath, NULL); 1579 Dir_SetPATH(); 1580 break; 1581 #ifdef POSIX 1582 case Posix: 1583 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1584 break; 1585 #endif 1586 default: 1587 break; 1588 } 1589 } else if (specType == MFlags) { 1590 /* 1591 * Call on functions in main.c to deal with these arguments and 1592 * set the initial character to a null-character so the loop to 1593 * get sources won't get anything 1594 */ 1595 Main_ParseArgLine(line); 1596 *line = '\0'; 1597 } else if (specType == ExShell) { 1598 if (Job_ParseShell(line) != SUCCESS) { 1599 Parse_Error(PARSE_FATAL, "improper shell specification"); 1600 goto out; 1601 } 1602 *line = '\0'; 1603 } else if ((specType == NotParallel) || (specType == SingleShell) || 1604 (specType == DeleteOnError)) { 1605 *line = '\0'; 1606 } 1607 1608 /* 1609 * NOW GO FOR THE SOURCES 1610 */ 1611 if ((specType == Suffixes) || (specType == ExPath) || 1612 (specType == Includes) || (specType == Libs) || 1613 (specType == Null) || (specType == ExObjdir)) 1614 { 1615 while (*line) { 1616 /* 1617 * If the target was one that doesn't take files as its sources 1618 * but takes something like suffixes, we take each 1619 * space-separated word on the line as a something and deal 1620 * with it accordingly. 1621 * 1622 * If the target was .SUFFIXES, we take each source as a 1623 * suffix and add it to the list of suffixes maintained by the 1624 * Suff module. 1625 * 1626 * If the target was a .PATH, we add the source as a directory 1627 * to search on the search path. 1628 * 1629 * If it was .INCLUDES, the source is taken to be the suffix of 1630 * files which will be #included and whose search path should 1631 * be present in the .INCLUDES variable. 1632 * 1633 * If it was .LIBS, the source is taken to be the suffix of 1634 * files which are considered libraries and whose search path 1635 * should be present in the .LIBS variable. 1636 * 1637 * If it was .NULL, the source is the suffix to use when a file 1638 * has no valid suffix. 1639 * 1640 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1641 * and will cause make to do a new chdir to that path. 1642 */ 1643 while (*cp && !isspace ((unsigned char)*cp)) { 1644 cp++; 1645 } 1646 savec = *cp; 1647 *cp = '\0'; 1648 switch (specType) { 1649 case Suffixes: 1650 Suff_AddSuffix(line, &mainNode); 1651 break; 1652 case ExPath: 1653 Lst_ForEach(paths, ParseAddDir, line); 1654 break; 1655 case Includes: 1656 Suff_AddInclude(line); 1657 break; 1658 case Libs: 1659 Suff_AddLib(line); 1660 break; 1661 case Null: 1662 Suff_SetNull(line); 1663 break; 1664 case ExObjdir: 1665 Main_SetObjdir("%s", line); 1666 break; 1667 default: 1668 break; 1669 } 1670 *cp = savec; 1671 if (savec != '\0') { 1672 cp++; 1673 } 1674 while (*cp && isspace ((unsigned char)*cp)) { 1675 cp++; 1676 } 1677 line = cp; 1678 } 1679 if (paths) { 1680 Lst_Destroy(paths, NULL); 1681 } 1682 if (specType == ExPath) 1683 Dir_SetPATH(); 1684 } else { 1685 while (*line) { 1686 /* 1687 * The targets take real sources, so we must beware of archive 1688 * specifications (i.e. things with left parentheses in them) 1689 * and handle them accordingly. 1690 */ 1691 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1692 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1693 /* 1694 * Only stop for a left parenthesis if it isn't at the 1695 * start of a word (that'll be for variable changes 1696 * later) and isn't preceded by a dollar sign (a dynamic 1697 * source). 1698 */ 1699 break; 1700 } 1701 } 1702 1703 if (*cp == LPAREN) { 1704 sources = Lst_Init(FALSE); 1705 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1706 Parse_Error(PARSE_FATAL, 1707 "Error in source archive spec \"%s\"", line); 1708 goto out; 1709 } 1710 1711 while (!Lst_IsEmpty (sources)) { 1712 gn = (GNode *)Lst_DeQueue(sources); 1713 ParseDoSrc(tOp, gn->name); 1714 } 1715 Lst_Destroy(sources, NULL); 1716 cp = line; 1717 } else { 1718 if (*cp) { 1719 *cp = '\0'; 1720 cp += 1; 1721 } 1722 1723 ParseDoSrc(tOp, line); 1724 } 1725 while (*cp && isspace ((unsigned char)*cp)) { 1726 cp++; 1727 } 1728 line = cp; 1729 } 1730 } 1731 1732 if (mainNode == NULL) { 1733 /* 1734 * If we have yet to decide on a main target to make, in the 1735 * absence of any user input, we want the first target on 1736 * the first dependency line that is actually a real target 1737 * (i.e. isn't a .USE or .EXEC rule) to be made. 1738 */ 1739 Lst_ForEach(targets, ParseFindMain, NULL); 1740 } 1741 1742 out: 1743 if (curTargs) 1744 Lst_Destroy(curTargs, NULL); 1745 } 1746 1747 /*- 1748 *--------------------------------------------------------------------- 1749 * Parse_IsVar -- 1750 * Return TRUE if the passed line is a variable assignment. A variable 1751 * assignment consists of a single word followed by optional whitespace 1752 * followed by either a += or an = operator. 1753 * This function is used both by the Parse_File function and main when 1754 * parsing the command-line arguments. 1755 * 1756 * Input: 1757 * line the line to check 1758 * 1759 * Results: 1760 * TRUE if it is. FALSE if it ain't 1761 * 1762 * Side Effects: 1763 * none 1764 *--------------------------------------------------------------------- 1765 */ 1766 Boolean 1767 Parse_IsVar(char *line) 1768 { 1769 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1770 char ch; 1771 int level = 0; 1772 #define ISEQOPERATOR(c) \ 1773 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1774 1775 /* 1776 * Skip to variable name 1777 */ 1778 for (;(*line == ' ') || (*line == '\t'); line++) 1779 continue; 1780 1781 /* Scan for one of the assignment operators outside a variable expansion */ 1782 while ((ch = *line++) != 0) { 1783 if (ch == '(' || ch == '{') { 1784 level++; 1785 continue; 1786 } 1787 if (ch == ')' || ch == '}') { 1788 level--; 1789 continue; 1790 } 1791 if (level != 0) 1792 continue; 1793 while (ch == ' ' || ch == '\t') { 1794 ch = *line++; 1795 wasSpace = TRUE; 1796 } 1797 #ifdef SUNSHCMD 1798 if (ch == ':' && strncmp(line, "sh", 2) == 0) { 1799 line += 2; 1800 continue; 1801 } 1802 #endif 1803 if (ch == '=') 1804 return TRUE; 1805 if (*line == '=' && ISEQOPERATOR(ch)) 1806 return TRUE; 1807 if (wasSpace) 1808 return FALSE; 1809 } 1810 1811 return FALSE; 1812 } 1813 1814 /*- 1815 *--------------------------------------------------------------------- 1816 * Parse_DoVar -- 1817 * Take the variable assignment in the passed line and do it in the 1818 * global context. 1819 * 1820 * Note: There is a lexical ambiguity with assignment modifier characters 1821 * in variable names. This routine interprets the character before the = 1822 * as a modifier. Therefore, an assignment like 1823 * C++=/usr/bin/CC 1824 * is interpreted as "C+ +=" instead of "C++ =". 1825 * 1826 * Input: 1827 * line a line guaranteed to be a variable assignment. 1828 * This reduces error checks 1829 * ctxt Context in which to do the assignment 1830 * 1831 * Results: 1832 * none 1833 * 1834 * Side Effects: 1835 * the variable structure of the given variable name is altered in the 1836 * global context. 1837 *--------------------------------------------------------------------- 1838 */ 1839 void 1840 Parse_DoVar(char *line, GNode *ctxt) 1841 { 1842 char *cp; /* pointer into line */ 1843 enum { 1844 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1845 } type; /* Type of assignment */ 1846 char *opc; /* ptr to operator character to 1847 * null-terminate the variable name */ 1848 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1849 * i.e. if any variable expansion was 1850 * performed */ 1851 int depth; 1852 1853 /* 1854 * Skip to variable name 1855 */ 1856 while ((*line == ' ') || (*line == '\t')) { 1857 line++; 1858 } 1859 1860 /* 1861 * Skip to operator character, nulling out whitespace as we go 1862 * XXX Rather than counting () and {} we should look for $ and 1863 * then expand the variable. 1864 */ 1865 for (depth = 0, cp = line + 1; depth > 0 || *cp != '='; cp++) { 1866 if (*cp == '(' || *cp == '{') { 1867 depth++; 1868 continue; 1869 } 1870 if (*cp == ')' || *cp == '}') { 1871 depth--; 1872 continue; 1873 } 1874 if (depth == 0 && isspace ((unsigned char)*cp)) { 1875 *cp = '\0'; 1876 } 1877 } 1878 opc = cp-1; /* operator is the previous character */ 1879 *cp++ = '\0'; /* nuke the = */ 1880 1881 /* 1882 * Check operator type 1883 */ 1884 switch (*opc) { 1885 case '+': 1886 type = VAR_APPEND; 1887 *opc = '\0'; 1888 break; 1889 1890 case '?': 1891 /* 1892 * If the variable already has a value, we don't do anything. 1893 */ 1894 *opc = '\0'; 1895 if (Var_Exists(line, ctxt)) { 1896 return; 1897 } else { 1898 type = VAR_NORMAL; 1899 } 1900 break; 1901 1902 case ':': 1903 type = VAR_SUBST; 1904 *opc = '\0'; 1905 break; 1906 1907 case '!': 1908 type = VAR_SHELL; 1909 *opc = '\0'; 1910 break; 1911 1912 default: 1913 #ifdef SUNSHCMD 1914 while (opc > line && *opc != ':') 1915 opc--; 1916 1917 if (strncmp(opc, ":sh", 3) == 0) { 1918 type = VAR_SHELL; 1919 *opc = '\0'; 1920 break; 1921 } 1922 #endif 1923 type = VAR_NORMAL; 1924 break; 1925 } 1926 1927 while (isspace ((unsigned char)*cp)) { 1928 cp++; 1929 } 1930 1931 if (type == VAR_APPEND) { 1932 Var_Append(line, cp, ctxt); 1933 } else if (type == VAR_SUBST) { 1934 /* 1935 * Allow variables in the old value to be undefined, but leave their 1936 * invocation alone -- this is done by forcing oldVars to be false. 1937 * XXX: This can cause recursive variables, but that's not hard to do, 1938 * and this allows someone to do something like 1939 * 1940 * CFLAGS = $(.INCLUDES) 1941 * CFLAGS := -I.. $(CFLAGS) 1942 * 1943 * And not get an error. 1944 */ 1945 Boolean oldOldVars = oldVars; 1946 1947 oldVars = FALSE; 1948 1949 /* 1950 * make sure that we set the variable the first time to nothing 1951 * so that it gets substituted! 1952 */ 1953 if (!Var_Exists(line, ctxt)) 1954 Var_Set(line, "", ctxt, 0); 1955 1956 cp = Var_Subst(NULL, cp, ctxt, VARF_WANTRES|VARF_ASSIGN); 1957 oldVars = oldOldVars; 1958 freeCp = TRUE; 1959 1960 Var_Set(line, cp, ctxt, 0); 1961 } else if (type == VAR_SHELL) { 1962 char *res; 1963 const char *error; 1964 1965 if (strchr(cp, '$') != NULL) { 1966 /* 1967 * There's a dollar sign in the command, so perform variable 1968 * expansion on the whole thing. The resulting string will need 1969 * freeing when we're done, so set freeCmd to TRUE. 1970 */ 1971 cp = Var_Subst(NULL, cp, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES); 1972 freeCp = TRUE; 1973 } 1974 1975 res = Cmd_Exec(cp, &error); 1976 Var_Set(line, res, ctxt, 0); 1977 free(res); 1978 1979 if (error) 1980 Parse_Error(PARSE_WARNING, error, cp); 1981 } else { 1982 /* 1983 * Normal assignment -- just do it. 1984 */ 1985 Var_Set(line, cp, ctxt, 0); 1986 } 1987 if (strcmp(line, MAKEOVERRIDES) == 0) 1988 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1989 else if (strcmp(line, ".CURDIR") == 0) { 1990 /* 1991 * Somone is being (too?) clever... 1992 * Let's pretend they know what they are doing and 1993 * re-initialize the 'cur' Path. 1994 */ 1995 Dir_InitCur(cp); 1996 Dir_SetPATH(); 1997 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) { 1998 Job_SetPrefix(); 1999 } else if (strcmp(line, MAKE_EXPORTED) == 0) { 2000 Var_Export(cp, 0); 2001 } 2002 if (freeCp) 2003 free(cp); 2004 } 2005 2006 2007 /* 2008 * ParseMaybeSubMake -- 2009 * Scan the command string to see if it a possible submake node 2010 * Input: 2011 * cmd the command to scan 2012 * Results: 2013 * TRUE if the command is possibly a submake, FALSE if not. 2014 */ 2015 static Boolean 2016 ParseMaybeSubMake(const char *cmd) 2017 { 2018 size_t i; 2019 static struct { 2020 const char *name; 2021 size_t len; 2022 } vals[] = { 2023 #define MKV(A) { A, sizeof(A) - 1 } 2024 MKV("${MAKE}"), 2025 MKV("${.MAKE}"), 2026 MKV("$(MAKE)"), 2027 MKV("$(.MAKE)"), 2028 MKV("make"), 2029 }; 2030 for (i = 0; i < sizeof(vals)/sizeof(vals[0]); i++) { 2031 char *ptr; 2032 if ((ptr = strstr(cmd, vals[i].name)) == NULL) 2033 continue; 2034 if ((ptr == cmd || !isalnum((unsigned char)ptr[-1])) 2035 && !isalnum((unsigned char)ptr[vals[i].len])) 2036 return TRUE; 2037 } 2038 return FALSE; 2039 } 2040 2041 /*- 2042 * ParseAddCmd -- 2043 * Lst_ForEach function to add a command line to all targets 2044 * 2045 * Input: 2046 * gnp the node to which the command is to be added 2047 * cmd the command to add 2048 * 2049 * Results: 2050 * Always 0 2051 * 2052 * Side Effects: 2053 * A new element is added to the commands list of the node, 2054 * and the node can be marked as a submake node if the command is 2055 * determined to be that. 2056 */ 2057 static int 2058 ParseAddCmd(void *gnp, void *cmd) 2059 { 2060 GNode *gn = (GNode *)gnp; 2061 2062 /* Add to last (ie current) cohort for :: targets */ 2063 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 2064 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 2065 2066 /* if target already supplied, ignore commands */ 2067 if (!(gn->type & OP_HAS_COMMANDS)) { 2068 (void)Lst_AtEnd(gn->commands, cmd); 2069 if (ParseMaybeSubMake(cmd)) 2070 gn->type |= OP_SUBMAKE; 2071 ParseMark(gn); 2072 } else { 2073 #ifdef notyet 2074 /* XXX: We cannot do this until we fix the tree */ 2075 (void)Lst_AtEnd(gn->commands, cmd); 2076 Parse_Error(PARSE_WARNING, 2077 "overriding commands for target \"%s\"; " 2078 "previous commands defined at %s: %d ignored", 2079 gn->name, gn->fname, gn->lineno); 2080 #else 2081 Parse_Error(PARSE_WARNING, 2082 "duplicate script for target \"%s\" ignored", 2083 gn->name); 2084 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 2085 "using previous script for \"%s\" defined here", 2086 gn->name); 2087 #endif 2088 } 2089 return(0); 2090 } 2091 2092 /*- 2093 *----------------------------------------------------------------------- 2094 * ParseHasCommands -- 2095 * Callback procedure for Parse_File when destroying the list of 2096 * targets on the last dependency line. Marks a target as already 2097 * having commands if it does, to keep from having shell commands 2098 * on multiple dependency lines. 2099 * 2100 * Input: 2101 * gnp Node to examine 2102 * 2103 * Results: 2104 * None 2105 * 2106 * Side Effects: 2107 * OP_HAS_COMMANDS may be set for the target. 2108 * 2109 *----------------------------------------------------------------------- 2110 */ 2111 static void 2112 ParseHasCommands(void *gnp) 2113 { 2114 GNode *gn = (GNode *)gnp; 2115 if (!Lst_IsEmpty(gn->commands)) { 2116 gn->type |= OP_HAS_COMMANDS; 2117 } 2118 } 2119 2120 /*- 2121 *----------------------------------------------------------------------- 2122 * Parse_AddIncludeDir -- 2123 * Add a directory to the path searched for included makefiles 2124 * bracketed by double-quotes. Used by functions in main.c 2125 * 2126 * Input: 2127 * dir The name of the directory to add 2128 * 2129 * Results: 2130 * None. 2131 * 2132 * Side Effects: 2133 * The directory is appended to the list. 2134 * 2135 *----------------------------------------------------------------------- 2136 */ 2137 void 2138 Parse_AddIncludeDir(char *dir) 2139 { 2140 (void)Dir_AddDir(parseIncPath, dir); 2141 } 2142 2143 /*- 2144 *--------------------------------------------------------------------- 2145 * ParseDoInclude -- 2146 * Push to another file. 2147 * 2148 * The input is the line minus the `.'. A file spec is a string 2149 * enclosed in <> or "". The former is looked for only in sysIncPath. 2150 * The latter in . and the directories specified by -I command line 2151 * options 2152 * 2153 * Results: 2154 * None 2155 * 2156 * Side Effects: 2157 * A structure is added to the includes Lst and readProc, lineno, 2158 * fname and curFILE are altered for the new file 2159 *--------------------------------------------------------------------- 2160 */ 2161 2162 static void 2163 Parse_include_file(char *file, Boolean isSystem, Boolean depinc, int silent) 2164 { 2165 struct loadedfile *lf; 2166 char *fullname; /* full pathname of file */ 2167 char *newName; 2168 char *prefEnd, *incdir; 2169 int fd; 2170 int i; 2171 2172 /* 2173 * Now we know the file's name and its search path, we attempt to 2174 * find the durn thing. A return of NULL indicates the file don't 2175 * exist. 2176 */ 2177 fullname = file[0] == '/' ? bmake_strdup(file) : NULL; 2178 2179 if (fullname == NULL && !isSystem) { 2180 /* 2181 * Include files contained in double-quotes are first searched for 2182 * relative to the including file's location. We don't want to 2183 * cd there, of course, so we just tack on the old file's 2184 * leading path components and call Dir_FindFile to see if 2185 * we can locate the beast. 2186 */ 2187 2188 incdir = bmake_strdup(curFile->fname); 2189 prefEnd = strrchr(incdir, '/'); 2190 if (prefEnd != NULL) { 2191 *prefEnd = '\0'; 2192 /* Now do lexical processing of leading "../" on the filename */ 2193 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) { 2194 prefEnd = strrchr(incdir + 1, '/'); 2195 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0) 2196 break; 2197 *prefEnd = '\0'; 2198 } 2199 newName = str_concat(incdir, file + i, STR_ADDSLASH); 2200 fullname = Dir_FindFile(newName, parseIncPath); 2201 if (fullname == NULL) 2202 fullname = Dir_FindFile(newName, dirSearchPath); 2203 free(newName); 2204 } 2205 free(incdir); 2206 2207 if (fullname == NULL) { 2208 /* 2209 * Makefile wasn't found in same directory as included makefile. 2210 * Search for it first on the -I search path, 2211 * then on the .PATH search path, if not found in a -I directory. 2212 * If we have a suffix specific path we should use that. 2213 */ 2214 char *suff; 2215 Lst suffPath = NULL; 2216 2217 if ((suff = strrchr(file, '.'))) { 2218 suffPath = Suff_GetPath(suff); 2219 if (suffPath != NULL) { 2220 fullname = Dir_FindFile(file, suffPath); 2221 } 2222 } 2223 if (fullname == NULL) { 2224 fullname = Dir_FindFile(file, parseIncPath); 2225 if (fullname == NULL) { 2226 fullname = Dir_FindFile(file, dirSearchPath); 2227 } 2228 } 2229 } 2230 } 2231 2232 /* Looking for a system file or file still not found */ 2233 if (fullname == NULL) { 2234 /* 2235 * Look for it on the system path 2236 */ 2237 fullname = Dir_FindFile(file, 2238 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2239 } 2240 2241 if (fullname == NULL) { 2242 if (!silent) 2243 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2244 return; 2245 } 2246 2247 /* Actually open the file... */ 2248 fd = open(fullname, O_RDONLY); 2249 if (fd == -1) { 2250 if (!silent) 2251 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2252 free(fullname); 2253 return; 2254 } 2255 2256 /* load it */ 2257 lf = loadfile(fullname, fd); 2258 2259 ParseSetIncludedFile(); 2260 /* Start reading from this file next */ 2261 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf); 2262 curFile->lf = lf; 2263 if (depinc) 2264 doing_depend = depinc; /* only turn it on */ 2265 } 2266 2267 static void 2268 ParseDoInclude(char *line) 2269 { 2270 char endc; /* the character which ends the file spec */ 2271 char *cp; /* current position in file spec */ 2272 int silent = (*line != 'i') ? 1 : 0; 2273 char *file = &line[7 + silent]; 2274 2275 /* Skip to delimiter character so we know where to look */ 2276 while (*file == ' ' || *file == '\t') 2277 file++; 2278 2279 if (*file != '"' && *file != '<') { 2280 Parse_Error(PARSE_FATAL, 2281 ".include filename must be delimited by '\"' or '<'"); 2282 return; 2283 } 2284 2285 /* 2286 * Set the search path on which to find the include file based on the 2287 * characters which bracket its name. Angle-brackets imply it's 2288 * a system Makefile while double-quotes imply it's a user makefile 2289 */ 2290 if (*file == '<') { 2291 endc = '>'; 2292 } else { 2293 endc = '"'; 2294 } 2295 2296 /* Skip to matching delimiter */ 2297 for (cp = ++file; *cp && *cp != endc; cp++) 2298 continue; 2299 2300 if (*cp != endc) { 2301 Parse_Error(PARSE_FATAL, 2302 "Unclosed %cinclude filename. '%c' expected", 2303 '.', endc); 2304 return; 2305 } 2306 *cp = '\0'; 2307 2308 /* 2309 * Substitute for any variables in the file name before trying to 2310 * find the thing. 2311 */ 2312 file = Var_Subst(NULL, file, VAR_CMD, VARF_WANTRES); 2313 2314 Parse_include_file(file, endc == '>', (*line == 'd'), silent); 2315 free(file); 2316 } 2317 2318 2319 /*- 2320 *--------------------------------------------------------------------- 2321 * ParseSetIncludedFile -- 2322 * Set the .INCLUDEDFROMFILE variable to the contents of .PARSEFILE 2323 * and the .INCLUDEDFROMDIR variable to the contents of .PARSEDIR 2324 * 2325 * Results: 2326 * None 2327 * 2328 * Side Effects: 2329 * The .INCLUDEDFROMFILE variable is overwritten by the contents 2330 * of .PARSEFILE and the .INCLUDEDFROMDIR variable is overwriten 2331 * by the contents of .PARSEDIR 2332 *--------------------------------------------------------------------- 2333 */ 2334 static void 2335 ParseSetIncludedFile(void) 2336 { 2337 char *pf, *fp = NULL; 2338 char *pd, *dp = NULL; 2339 2340 pf = Var_Value(".PARSEFILE", VAR_GLOBAL, &fp); 2341 Var_Set(".INCLUDEDFROMFILE", pf, VAR_GLOBAL, 0); 2342 pd = Var_Value(".PARSEDIR", VAR_GLOBAL, &dp); 2343 Var_Set(".INCLUDEDFROMDIR", pd, VAR_GLOBAL, 0); 2344 2345 if (DEBUG(PARSE)) 2346 fprintf(debug_file, "%s: ${.INCLUDEDFROMDIR} = `%s' " 2347 "${.INCLUDEDFROMFILE} = `%s'\n", __func__, pd, pf); 2348 2349 free(fp); 2350 free(dp); 2351 } 2352 /*- 2353 *--------------------------------------------------------------------- 2354 * ParseSetParseFile -- 2355 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2356 * basename of the given filename 2357 * 2358 * Results: 2359 * None 2360 * 2361 * Side Effects: 2362 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2363 * dirname and basename of the given filename. 2364 *--------------------------------------------------------------------- 2365 */ 2366 static void 2367 ParseSetParseFile(const char *filename) 2368 { 2369 char *slash, *dirname; 2370 const char *pd, *pf; 2371 int len; 2372 2373 slash = strrchr(filename, '/'); 2374 if (slash == NULL) { 2375 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0); 2376 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0); 2377 dirname= NULL; 2378 } else { 2379 len = slash - filename; 2380 dirname = bmake_malloc(len + 1); 2381 memcpy(dirname, filename, len); 2382 dirname[len] = '\0'; 2383 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0); 2384 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0); 2385 } 2386 if (DEBUG(PARSE)) 2387 fprintf(debug_file, "%s: ${.PARSEDIR} = `%s' ${.PARSEFILE} = `%s'\n", 2388 __func__, pd, pf); 2389 free(dirname); 2390 } 2391 2392 /* 2393 * Track the makefiles we read - so makefiles can 2394 * set dependencies on them. 2395 * Avoid adding anything more than once. 2396 */ 2397 2398 static void 2399 ParseTrackInput(const char *name) 2400 { 2401 char *old; 2402 char *ep; 2403 char *fp = NULL; 2404 size_t name_len = strlen(name); 2405 2406 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp); 2407 if (old) { 2408 ep = old + strlen(old) - name_len; 2409 /* does it contain name? */ 2410 for (; old != NULL; old = strchr(old, ' ')) { 2411 if (*old == ' ') 2412 old++; 2413 if (old >= ep) 2414 break; /* cannot contain name */ 2415 if (memcmp(old, name, name_len) == 0 2416 && (old[name_len] == 0 || old[name_len] == ' ')) 2417 goto cleanup; 2418 } 2419 } 2420 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL); 2421 cleanup: 2422 if (fp) { 2423 free(fp); 2424 } 2425 } 2426 2427 2428 /*- 2429 *--------------------------------------------------------------------- 2430 * Parse_setInput -- 2431 * Start Parsing from the given source 2432 * 2433 * Results: 2434 * None 2435 * 2436 * Side Effects: 2437 * A structure is added to the includes Lst and readProc, lineno, 2438 * fname and curFile are altered for the new file 2439 *--------------------------------------------------------------------- 2440 */ 2441 void 2442 Parse_SetInput(const char *name, int line, int fd, 2443 char *(*nextbuf)(void *, size_t *), void *arg) 2444 { 2445 char *buf; 2446 size_t len; 2447 2448 if (name == NULL) 2449 name = curFile->fname; 2450 else 2451 ParseTrackInput(name); 2452 2453 if (DEBUG(PARSE)) 2454 fprintf(debug_file, "%s: file %s, line %d, fd %d, nextbuf %p, arg %p\n", 2455 __func__, name, line, fd, nextbuf, arg); 2456 2457 if (fd == -1 && nextbuf == NULL) 2458 /* sanity */ 2459 return; 2460 2461 if (curFile != NULL) 2462 /* Save exiting file info */ 2463 Lst_AtFront(includes, curFile); 2464 2465 /* Allocate and fill in new structure */ 2466 curFile = bmake_malloc(sizeof *curFile); 2467 2468 /* 2469 * Once the previous state has been saved, we can get down to reading 2470 * the new file. We set up the name of the file to be the absolute 2471 * name of the include file so error messages refer to the right 2472 * place. 2473 */ 2474 curFile->fname = bmake_strdup(name); 2475 curFile->lineno = line; 2476 curFile->first_lineno = line; 2477 curFile->nextbuf = nextbuf; 2478 curFile->nextbuf_arg = arg; 2479 curFile->lf = NULL; 2480 curFile->depending = doing_depend; /* restore this on EOF */ 2481 2482 assert(nextbuf != NULL); 2483 2484 /* Get first block of input data */ 2485 buf = curFile->nextbuf(curFile->nextbuf_arg, &len); 2486 if (buf == NULL) { 2487 /* Was all a waste of time ... */ 2488 if (curFile->fname) 2489 free(curFile->fname); 2490 free(curFile); 2491 return; 2492 } 2493 curFile->P_str = buf; 2494 curFile->P_ptr = buf; 2495 curFile->P_end = buf+len; 2496 2497 curFile->cond_depth = Cond_save_depth(); 2498 ParseSetParseFile(name); 2499 } 2500 2501 #ifdef SYSVINCLUDE 2502 /*- 2503 *--------------------------------------------------------------------- 2504 * ParseTraditionalInclude -- 2505 * Push to another file. 2506 * 2507 * The input is the current line. The file name(s) are 2508 * following the "include". 2509 * 2510 * Results: 2511 * None 2512 * 2513 * Side Effects: 2514 * A structure is added to the includes Lst and readProc, lineno, 2515 * fname and curFILE are altered for the new file 2516 *--------------------------------------------------------------------- 2517 */ 2518 static void 2519 ParseTraditionalInclude(char *line) 2520 { 2521 char *cp; /* current position in file spec */ 2522 int done = 0; 2523 int silent = (line[0] != 'i') ? 1 : 0; 2524 char *file = &line[silent + 7]; 2525 char *all_files; 2526 2527 if (DEBUG(PARSE)) { 2528 fprintf(debug_file, "%s: %s\n", __func__, file); 2529 } 2530 2531 /* 2532 * Skip over whitespace 2533 */ 2534 while (isspace((unsigned char)*file)) 2535 file++; 2536 2537 /* 2538 * Substitute for any variables in the file name before trying to 2539 * find the thing. 2540 */ 2541 all_files = Var_Subst(NULL, file, VAR_CMD, VARF_WANTRES); 2542 2543 if (*file == '\0') { 2544 Parse_Error(PARSE_FATAL, 2545 "Filename missing from \"include\""); 2546 return; 2547 } 2548 2549 for (file = all_files; !done; file = cp + 1) { 2550 /* Skip to end of line or next whitespace */ 2551 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2552 continue; 2553 2554 if (*cp) 2555 *cp = '\0'; 2556 else 2557 done = 1; 2558 2559 Parse_include_file(file, FALSE, FALSE, silent); 2560 } 2561 free(all_files); 2562 } 2563 #endif 2564 2565 #ifdef GMAKEEXPORT 2566 /*- 2567 *--------------------------------------------------------------------- 2568 * ParseGmakeExport -- 2569 * Parse export <variable>=<value> 2570 * 2571 * And set the environment with it. 2572 * 2573 * Results: 2574 * None 2575 * 2576 * Side Effects: 2577 * None 2578 *--------------------------------------------------------------------- 2579 */ 2580 static void 2581 ParseGmakeExport(char *line) 2582 { 2583 char *variable = &line[6]; 2584 char *value; 2585 2586 if (DEBUG(PARSE)) { 2587 fprintf(debug_file, "%s: %s\n", __func__, variable); 2588 } 2589 2590 /* 2591 * Skip over whitespace 2592 */ 2593 while (isspace((unsigned char)*variable)) 2594 variable++; 2595 2596 for (value = variable; *value && *value != '='; value++) 2597 continue; 2598 2599 if (*value != '=') { 2600 Parse_Error(PARSE_FATAL, 2601 "Variable/Value missing from \"export\""); 2602 return; 2603 } 2604 *value++ = '\0'; /* terminate variable */ 2605 2606 /* 2607 * Expand the value before putting it in the environment. 2608 */ 2609 value = Var_Subst(NULL, value, VAR_CMD, VARF_WANTRES); 2610 setenv(variable, value, 1); 2611 } 2612 #endif 2613 2614 /*- 2615 *--------------------------------------------------------------------- 2616 * ParseEOF -- 2617 * Called when EOF is reached in the current file. If we were reading 2618 * an include file, the includes stack is popped and things set up 2619 * to go back to reading the previous file at the previous location. 2620 * 2621 * Results: 2622 * CONTINUE if there's more to do. DONE if not. 2623 * 2624 * Side Effects: 2625 * The old curFILE, is closed. The includes list is shortened. 2626 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2627 *--------------------------------------------------------------------- 2628 */ 2629 static int 2630 ParseEOF(void) 2631 { 2632 char *ptr; 2633 size_t len; 2634 2635 assert(curFile->nextbuf != NULL); 2636 2637 doing_depend = curFile->depending; /* restore this */ 2638 /* get next input buffer, if any */ 2639 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len); 2640 curFile->P_ptr = ptr; 2641 curFile->P_str = ptr; 2642 curFile->P_end = ptr + len; 2643 curFile->lineno = curFile->first_lineno; 2644 if (ptr != NULL) { 2645 /* Iterate again */ 2646 return CONTINUE; 2647 } 2648 2649 /* Ensure the makefile (or loop) didn't have mismatched conditionals */ 2650 Cond_restore_depth(curFile->cond_depth); 2651 2652 if (curFile->lf != NULL) { 2653 loadedfile_destroy(curFile->lf); 2654 curFile->lf = NULL; 2655 } 2656 2657 /* Dispose of curFile info */ 2658 /* Leak curFile->fname because all the gnodes have pointers to it */ 2659 free(curFile->P_str); 2660 free(curFile); 2661 2662 curFile = Lst_DeQueue(includes); 2663 2664 if (curFile == NULL) { 2665 /* We've run out of input */ 2666 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2667 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2668 Var_Delete(".INCLUDEDFROMDIR", VAR_GLOBAL); 2669 Var_Delete(".INCLUDEDFROMFILE", VAR_GLOBAL); 2670 return DONE; 2671 } 2672 2673 if (DEBUG(PARSE)) 2674 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n", 2675 curFile->fname, curFile->lineno); 2676 2677 /* Restore the PARSEDIR/PARSEFILE variables */ 2678 ParseSetParseFile(curFile->fname); 2679 return (CONTINUE); 2680 } 2681 2682 #define PARSE_RAW 1 2683 #define PARSE_SKIP 2 2684 2685 static char * 2686 ParseGetLine(int flags, int *length) 2687 { 2688 IFile *cf = curFile; 2689 char *ptr; 2690 char ch; 2691 char *line; 2692 char *line_end; 2693 char *escaped; 2694 char *comment; 2695 char *tp; 2696 2697 /* Loop through blank lines and comment lines */ 2698 for (;;) { 2699 cf->lineno++; 2700 line = cf->P_ptr; 2701 ptr = line; 2702 line_end = line; 2703 escaped = NULL; 2704 comment = NULL; 2705 for (;;) { 2706 if (cf->P_end != NULL && ptr == cf->P_end) { 2707 /* end of buffer */ 2708 ch = 0; 2709 break; 2710 } 2711 ch = *ptr; 2712 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) { 2713 if (cf->P_end == NULL) 2714 /* End of string (aka for loop) data */ 2715 break; 2716 /* see if there is more we can parse */ 2717 while (ptr++ < cf->P_end) { 2718 if ((ch = *ptr) == '\n') { 2719 if (ptr > line && ptr[-1] == '\\') 2720 continue; 2721 Parse_Error(PARSE_WARNING, 2722 "Zero byte read from file, skipping rest of line."); 2723 break; 2724 } 2725 } 2726 if (cf->nextbuf != NULL) { 2727 /* 2728 * End of this buffer; return EOF and outer logic 2729 * will get the next one. (eww) 2730 */ 2731 break; 2732 } 2733 Parse_Error(PARSE_FATAL, "Zero byte read from file"); 2734 return NULL; 2735 } 2736 2737 if (ch == '\\') { 2738 /* Don't treat next character as special, remember first one */ 2739 if (escaped == NULL) 2740 escaped = ptr; 2741 if (ptr[1] == '\n') 2742 cf->lineno++; 2743 ptr += 2; 2744 line_end = ptr; 2745 continue; 2746 } 2747 if (ch == '#' && comment == NULL) { 2748 /* Remember first '#' for comment stripping */ 2749 /* Unless previous char was '[', as in modifier :[#] */ 2750 if (!(ptr > line && ptr[-1] == '[')) 2751 comment = line_end; 2752 } 2753 ptr++; 2754 if (ch == '\n') 2755 break; 2756 if (!isspace((unsigned char)ch)) 2757 /* We are not interested in trailing whitespace */ 2758 line_end = ptr; 2759 } 2760 2761 /* Save next 'to be processed' location */ 2762 cf->P_ptr = ptr; 2763 2764 /* Check we have a non-comment, non-blank line */ 2765 if (line_end == line || comment == line) { 2766 if (ch == 0) 2767 /* At end of file */ 2768 return NULL; 2769 /* Parse another line */ 2770 continue; 2771 } 2772 2773 /* We now have a line of data */ 2774 *line_end = 0; 2775 2776 if (flags & PARSE_RAW) { 2777 /* Leave '\' (etc) in line buffer (eg 'for' lines) */ 2778 *length = line_end - line; 2779 return line; 2780 } 2781 2782 if (flags & PARSE_SKIP) { 2783 /* Completely ignore non-directives */ 2784 if (line[0] != '.') 2785 continue; 2786 /* We could do more of the .else/.elif/.endif checks here */ 2787 } 2788 break; 2789 } 2790 2791 /* Brutally ignore anything after a non-escaped '#' in non-commands */ 2792 if (comment != NULL && line[0] != '\t') { 2793 line_end = comment; 2794 *line_end = 0; 2795 } 2796 2797 /* If we didn't see a '\\' then the in-situ data is fine */ 2798 if (escaped == NULL) { 2799 *length = line_end - line; 2800 return line; 2801 } 2802 2803 /* Remove escapes from '\n' and '#' */ 2804 tp = ptr = escaped; 2805 escaped = line; 2806 for (; ; *tp++ = ch) { 2807 ch = *ptr++; 2808 if (ch != '\\') { 2809 if (ch == 0) 2810 break; 2811 continue; 2812 } 2813 2814 ch = *ptr++; 2815 if (ch == 0) { 2816 /* Delete '\\' at end of buffer */ 2817 tp--; 2818 break; 2819 } 2820 2821 if (ch == '#' && line[0] != '\t') 2822 /* Delete '\\' from before '#' on non-command lines */ 2823 continue; 2824 2825 if (ch != '\n') { 2826 /* Leave '\\' in buffer for later */ 2827 *tp++ = '\\'; 2828 /* Make sure we don't delete an escaped ' ' from the line end */ 2829 escaped = tp + 1; 2830 continue; 2831 } 2832 2833 /* Escaped '\n' replace following whitespace with a single ' ' */ 2834 while (ptr[0] == ' ' || ptr[0] == '\t') 2835 ptr++; 2836 ch = ' '; 2837 } 2838 2839 /* Delete any trailing spaces - eg from empty continuations */ 2840 while (tp > escaped && isspace((unsigned char)tp[-1])) 2841 tp--; 2842 2843 *tp = 0; 2844 *length = tp - line; 2845 return line; 2846 } 2847 2848 /*- 2849 *--------------------------------------------------------------------- 2850 * ParseReadLine -- 2851 * Read an entire line from the input file. Called only by Parse_File. 2852 * 2853 * Results: 2854 * A line w/o its newline 2855 * 2856 * Side Effects: 2857 * Only those associated with reading a character 2858 *--------------------------------------------------------------------- 2859 */ 2860 static char * 2861 ParseReadLine(void) 2862 { 2863 char *line; /* Result */ 2864 int lineLength; /* Length of result */ 2865 int lineno; /* Saved line # */ 2866 int rval; 2867 2868 for (;;) { 2869 line = ParseGetLine(0, &lineLength); 2870 if (line == NULL) 2871 return NULL; 2872 2873 if (line[0] != '.') 2874 return line; 2875 2876 /* 2877 * The line might be a conditional. Ask the conditional module 2878 * about it and act accordingly 2879 */ 2880 switch (Cond_Eval(line)) { 2881 case COND_SKIP: 2882 /* Skip to next conditional that evaluates to COND_PARSE. */ 2883 do { 2884 line = ParseGetLine(PARSE_SKIP, &lineLength); 2885 } while (line && Cond_Eval(line) != COND_PARSE); 2886 if (line == NULL) 2887 break; 2888 continue; 2889 case COND_PARSE: 2890 continue; 2891 case COND_INVALID: /* Not a conditional line */ 2892 /* Check for .for loops */ 2893 rval = For_Eval(line); 2894 if (rval == 0) 2895 /* Not a .for line */ 2896 break; 2897 if (rval < 0) 2898 /* Syntax error - error printed, ignore line */ 2899 continue; 2900 /* Start of a .for loop */ 2901 lineno = curFile->lineno; 2902 /* Accumulate loop lines until matching .endfor */ 2903 do { 2904 line = ParseGetLine(PARSE_RAW, &lineLength); 2905 if (line == NULL) { 2906 Parse_Error(PARSE_FATAL, 2907 "Unexpected end of file in for loop."); 2908 break; 2909 } 2910 } while (For_Accum(line)); 2911 /* Stash each iteration as a new 'input file' */ 2912 For_Run(lineno); 2913 /* Read next line from for-loop buffer */ 2914 continue; 2915 } 2916 return (line); 2917 } 2918 } 2919 2920 /*- 2921 *----------------------------------------------------------------------- 2922 * ParseFinishLine -- 2923 * Handle the end of a dependency group. 2924 * 2925 * Results: 2926 * Nothing. 2927 * 2928 * Side Effects: 2929 * inLine set FALSE. 'targets' list destroyed. 2930 * 2931 *----------------------------------------------------------------------- 2932 */ 2933 static void 2934 ParseFinishLine(void) 2935 { 2936 if (inLine) { 2937 Lst_ForEach(targets, Suff_EndTransform, NULL); 2938 Lst_Destroy(targets, ParseHasCommands); 2939 targets = NULL; 2940 inLine = FALSE; 2941 } 2942 } 2943 2944 2945 /*- 2946 *--------------------------------------------------------------------- 2947 * Parse_File -- 2948 * Parse a file into its component parts, incorporating it into the 2949 * current dependency graph. This is the main function and controls 2950 * almost every other function in this module 2951 * 2952 * Input: 2953 * name the name of the file being read 2954 * fd Open file to makefile to parse 2955 * 2956 * Results: 2957 * None 2958 * 2959 * Side Effects: 2960 * closes fd. 2961 * Loads. Nodes are added to the list of all targets, nodes and links 2962 * are added to the dependency graph. etc. etc. etc. 2963 *--------------------------------------------------------------------- 2964 */ 2965 void 2966 Parse_File(const char *name, int fd) 2967 { 2968 char *cp; /* pointer into the line */ 2969 char *line; /* the line we're working on */ 2970 struct loadedfile *lf; 2971 2972 lf = loadfile(name, fd); 2973 2974 inLine = FALSE; 2975 fatals = 0; 2976 2977 if (name == NULL) { 2978 name = "(stdin)"; 2979 } 2980 2981 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf); 2982 curFile->lf = lf; 2983 2984 do { 2985 for (; (line = ParseReadLine()) != NULL; ) { 2986 if (DEBUG(PARSE)) 2987 fprintf(debug_file, "ParseReadLine (%d): '%s'\n", 2988 curFile->lineno, line); 2989 if (*line == '.') { 2990 /* 2991 * Lines that begin with the special character may be 2992 * include or undef directives. 2993 * On the other hand they can be suffix rules (.c.o: ...) 2994 * or just dependencies for filenames that start '.'. 2995 */ 2996 for (cp = line + 1; isspace((unsigned char)*cp); cp++) { 2997 continue; 2998 } 2999 if (strncmp(cp, "include", 7) == 0 || 3000 ((cp[0] == 'd' || cp[0] == 's' || cp[0] == '-') && 3001 strncmp(&cp[1], "include", 7) == 0)) { 3002 ParseDoInclude(cp); 3003 continue; 3004 } 3005 if (strncmp(cp, "undef", 5) == 0) { 3006 char *cp2; 3007 for (cp += 5; isspace((unsigned char) *cp); cp++) 3008 continue; 3009 for (cp2 = cp; !isspace((unsigned char) *cp2) && 3010 (*cp2 != '\0'); cp2++) 3011 continue; 3012 *cp2 = '\0'; 3013 Var_Delete(cp, VAR_GLOBAL); 3014 continue; 3015 } else if (strncmp(cp, "export", 6) == 0) { 3016 for (cp += 6; isspace((unsigned char) *cp); cp++) 3017 continue; 3018 Var_Export(cp, 1); 3019 continue; 3020 } else if (strncmp(cp, "unexport", 8) == 0) { 3021 Var_UnExport(cp); 3022 continue; 3023 } else if (strncmp(cp, "info", 4) == 0 || 3024 strncmp(cp, "error", 5) == 0 || 3025 strncmp(cp, "warning", 7) == 0) { 3026 if (ParseMessage(cp)) 3027 continue; 3028 } 3029 } 3030 3031 if (*line == '\t') { 3032 /* 3033 * If a line starts with a tab, it can only hope to be 3034 * a creation command. 3035 */ 3036 cp = line + 1; 3037 shellCommand: 3038 for (; isspace ((unsigned char)*cp); cp++) { 3039 continue; 3040 } 3041 if (*cp) { 3042 if (!inLine) 3043 Parse_Error(PARSE_FATAL, 3044 "Unassociated shell command \"%s\"", 3045 cp); 3046 /* 3047 * So long as it's not a blank line and we're actually 3048 * in a dependency spec, add the command to the list of 3049 * commands of all targets in the dependency spec 3050 */ 3051 if (targets) { 3052 cp = bmake_strdup(cp); 3053 Lst_ForEach(targets, ParseAddCmd, cp); 3054 #ifdef CLEANUP 3055 Lst_AtEnd(targCmds, cp); 3056 #endif 3057 } 3058 } 3059 continue; 3060 } 3061 3062 #ifdef SYSVINCLUDE 3063 if (((strncmp(line, "include", 7) == 0 && 3064 isspace((unsigned char) line[7])) || 3065 ((line[0] == 's' || line[0] == '-') && 3066 strncmp(&line[1], "include", 7) == 0 && 3067 isspace((unsigned char) line[8]))) && 3068 strchr(line, ':') == NULL) { 3069 /* 3070 * It's an S3/S5-style "include". 3071 */ 3072 ParseTraditionalInclude(line); 3073 continue; 3074 } 3075 #endif 3076 #ifdef GMAKEEXPORT 3077 if (strncmp(line, "export", 6) == 0 && 3078 isspace((unsigned char) line[6]) && 3079 strchr(line, ':') == NULL) { 3080 /* 3081 * It's a Gmake "export". 3082 */ 3083 ParseGmakeExport(line); 3084 continue; 3085 } 3086 #endif 3087 if (Parse_IsVar(line)) { 3088 ParseFinishLine(); 3089 Parse_DoVar(line, VAR_GLOBAL); 3090 continue; 3091 } 3092 3093 #ifndef POSIX 3094 /* 3095 * To make life easier on novices, if the line is indented we 3096 * first make sure the line has a dependency operator in it. 3097 * If it doesn't have an operator and we're in a dependency 3098 * line's script, we assume it's actually a shell command 3099 * and add it to the current list of targets. 3100 */ 3101 cp = line; 3102 if (isspace((unsigned char) line[0])) { 3103 while ((*cp != '\0') && isspace((unsigned char) *cp)) 3104 cp++; 3105 while (*cp && (ParseIsEscaped(line, cp) || 3106 (*cp != ':') && (*cp != '!'))) { 3107 cp++; 3108 } 3109 if (*cp == '\0') { 3110 if (inLine) { 3111 Parse_Error(PARSE_WARNING, 3112 "Shell command needs a leading tab"); 3113 goto shellCommand; 3114 } 3115 } 3116 } 3117 #endif 3118 ParseFinishLine(); 3119 3120 /* 3121 * For some reason - probably to make the parser impossible - 3122 * a ';' can be used to separate commands from dependencies. 3123 * Attempt to avoid ';' inside substitution patterns. 3124 */ 3125 { 3126 int level = 0; 3127 3128 for (cp = line; *cp != 0; cp++) { 3129 if (*cp == '\\' && cp[1] != 0) { 3130 cp++; 3131 continue; 3132 } 3133 if (*cp == '$' && 3134 (cp[1] == '(' || cp[1] == '{')) { 3135 level++; 3136 continue; 3137 } 3138 if (level > 0) { 3139 if (*cp == ')' || *cp == '}') { 3140 level--; 3141 continue; 3142 } 3143 } else if (*cp == ';') { 3144 break; 3145 } 3146 } 3147 } 3148 if (*cp != 0) 3149 /* Terminate the dependency list at the ';' */ 3150 *cp++ = 0; 3151 else 3152 cp = NULL; 3153 3154 /* 3155 * We now know it's a dependency line so it needs to have all 3156 * variables expanded before being parsed. Tell the variable 3157 * module to complain if some variable is undefined... 3158 */ 3159 line = Var_Subst(NULL, line, VAR_CMD, VARF_UNDEFERR|VARF_WANTRES); 3160 3161 /* 3162 * Need a non-circular list for the target nodes 3163 */ 3164 if (targets) 3165 Lst_Destroy(targets, NULL); 3166 3167 targets = Lst_Init(FALSE); 3168 inLine = TRUE; 3169 3170 ParseDoDependency(line); 3171 free(line); 3172 3173 /* If there were commands after a ';', add them now */ 3174 if (cp != NULL) { 3175 goto shellCommand; 3176 } 3177 } 3178 /* 3179 * Reached EOF, but it may be just EOF of an include file... 3180 */ 3181 } while (ParseEOF() == CONTINUE); 3182 3183 if (fatals) { 3184 (void)fflush(stdout); 3185 (void)fprintf(stderr, 3186 "%s: Fatal errors encountered -- cannot continue", 3187 progname); 3188 PrintOnError(NULL, NULL); 3189 exit(1); 3190 } 3191 } 3192 3193 /*- 3194 *--------------------------------------------------------------------- 3195 * Parse_Init -- 3196 * initialize the parsing module 3197 * 3198 * Results: 3199 * none 3200 * 3201 * Side Effects: 3202 * the parseIncPath list is initialized... 3203 *--------------------------------------------------------------------- 3204 */ 3205 void 3206 Parse_Init(void) 3207 { 3208 mainNode = NULL; 3209 parseIncPath = Lst_Init(FALSE); 3210 sysIncPath = Lst_Init(FALSE); 3211 defIncPath = Lst_Init(FALSE); 3212 includes = Lst_Init(FALSE); 3213 #ifdef CLEANUP 3214 targCmds = Lst_Init(FALSE); 3215 #endif 3216 } 3217 3218 void 3219 Parse_End(void) 3220 { 3221 #ifdef CLEANUP 3222 Lst_Destroy(targCmds, (FreeProc *)free); 3223 if (targets) 3224 Lst_Destroy(targets, NULL); 3225 Lst_Destroy(defIncPath, Dir_Destroy); 3226 Lst_Destroy(sysIncPath, Dir_Destroy); 3227 Lst_Destroy(parseIncPath, Dir_Destroy); 3228 Lst_Destroy(includes, NULL); /* Should be empty now */ 3229 #endif 3230 } 3231 3232 3233 /*- 3234 *----------------------------------------------------------------------- 3235 * Parse_MainName -- 3236 * Return a Lst of the main target to create for main()'s sake. If 3237 * no such target exists, we Punt with an obnoxious error message. 3238 * 3239 * Results: 3240 * A Lst of the single node to create. 3241 * 3242 * Side Effects: 3243 * None. 3244 * 3245 *----------------------------------------------------------------------- 3246 */ 3247 Lst 3248 Parse_MainName(void) 3249 { 3250 Lst mainList; /* result list */ 3251 3252 mainList = Lst_Init(FALSE); 3253 3254 if (mainNode == NULL) { 3255 Punt("no target to make."); 3256 /*NOTREACHED*/ 3257 } else if (mainNode->type & OP_DOUBLEDEP) { 3258 (void)Lst_AtEnd(mainList, mainNode); 3259 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3260 } 3261 else 3262 (void)Lst_AtEnd(mainList, mainNode); 3263 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3264 return (mainList); 3265 } 3266 3267 /*- 3268 *----------------------------------------------------------------------- 3269 * ParseMark -- 3270 * Add the filename and lineno to the GNode so that we remember 3271 * where it was first defined. 3272 * 3273 * Side Effects: 3274 * None. 3275 * 3276 *----------------------------------------------------------------------- 3277 */ 3278 static void 3279 ParseMark(GNode *gn) 3280 { 3281 gn->fname = curFile->fname; 3282 gn->lineno = curFile->lineno; 3283 } 3284
Indexes created Sun Sep 21 20:09:37 GMT 2025