1 /* $OpenPackages$ */ 2 /* $OpenBSD: main.c,v 1.91 2008/01/10 20:34:03 espie Exp $ */ 3 /* $NetBSD: main.c,v 1.34 1997/03/24 20:56:36 gwr Exp $ */ 4 5 /* 6 * Copyright (c) 1988, 1989, 1990, 1993 7 * The Regents of the University of California. All rights reserved. 8 * Copyright (c) 1989 by Berkeley Softworks 9 * All rights reserved. 10 * 11 * This code is derived from software contributed to Berkeley by 12 * Adam de Boor. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/types.h> 41 #include <sys/stat.h> 42 #ifndef MAKE_BOOTSTRAP 43 #include <sys/utsname.h> 44 #endif 45 #include <errno.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include <unistd.h> 50 #include "config.h" 51 #include "defines.h" 52 #include "var.h" 53 #include "parse.h" 54 #include "parsevar.h" 55 #include "dir.h" 56 #include "direxpand.h" 57 #include "error.h" 58 #include "pathnames.h" 59 #include "init.h" 60 #include "job.h" 61 #include "compat.h" 62 #include "targ.h" 63 #include "suff.h" 64 #include "str.h" 65 #include "main.h" 66 #include "lst.h" 67 #include "memory.h" 68 #include "make.h" 69 70 #ifndef PATH_MAX 71 # ifdef MAXPATHLEN 72 # define PATH_MAX (MAXPATHLEN+1) 73 # else 74 # define PATH_MAX 1024 75 # endif 76 #endif 77 78 79 #define MAKEFLAGS ".MAKEFLAGS" 80 81 static LIST to_create; /* Targets to be made */ 82 Lst create = &to_create; 83 bool allPrecious; /* .PRECIOUS given on line by itself */ 84 85 static bool noBuiltins; /* -r flag */ 86 static LIST makefiles; /* ordered list of makefiles to read */ 87 static LIST varstoprint; /* list of variables to print */ 88 int maxJobs; /* -j argument */ 89 bool compatMake; /* -B argument */ 90 static bool forceJobs = false; 91 int debug; /* -d flag */ 92 bool noExecute; /* -n flag */ 93 bool keepgoing; /* -k flag */ 94 bool queryFlag; /* -q flag */ 95 bool touchFlag; /* -t flag */ 96 bool ignoreErrors; /* -i flag */ 97 bool beSilent; /* -s flag */ 98 99 struct dirs { 100 char *current; 101 char *object; 102 }; 103 104 static void MainParseArgs(int, char **); 105 static void add_dirpath(Lst, const char *); 106 static void usage(void); 107 static void posixParseOptLetter(int); 108 static void record_option(int, const char *); 109 110 static char *figure_out_MACHINE(void); 111 static char *figure_out_MACHINE_ARCH(void); 112 static void no_fd_limits(void); 113 114 static char *chdir_verify_path(const char *, struct dirs *); 115 static char *concat_verify(const char *, const char *, char, struct dirs *); 116 static char *figure_out_CURDIR(void); 117 static void setup_CURDIR_OBJDIR(struct dirs *, const char *); 118 119 static void setup_VPATH(void); 120 121 static void read_all_make_rules(bool, bool, Lst, struct dirs *); 122 static void read_makefile_list(Lst, struct dirs *); 123 static int ReadMakefile(void *, void *); 124 125 126 static void record_option(int c, const char *arg) 127 { 128 char opt[3]; 129 130 opt[0] = '-'; 131 opt[1] = c; 132 opt[2] = '\0'; 133 Var_Append(MAKEFLAGS, opt); 134 if (arg != NULL) 135 Var_Append(MAKEFLAGS, arg); 136 } 137 138 static void 139 posixParseOptLetter(int c) 140 { 141 switch(c) { 142 case 'B': 143 compatMake = true; 144 return; /* XXX don't pass to submakes. */ 145 case 'P': 146 break; /* old option */ 147 case 'S': 148 keepgoing = false; 149 break; 150 case 'e': 151 Var_setCheckEnvFirst(true); 152 break; 153 case 'i': 154 ignoreErrors = true; 155 break; 156 case 'k': 157 keepgoing = true; 158 break; 159 case 'n': 160 noExecute = true; 161 break; 162 case 'q': 163 queryFlag = true; 164 /* Kind of nonsensical, wot? */ 165 break; 166 case 'r': 167 noBuiltins = true; 168 break; 169 case 's': 170 beSilent = true; 171 break; 172 case 't': 173 touchFlag = true; 174 break; 175 default: 176 case '?': 177 usage(); 178 } 179 record_option(c, NULL); 180 } 181 182 /*- 183 * MainParseArgs -- 184 * Parse a given argument vector. Called from main() and from 185 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 186 * 187 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 188 * 189 * Side Effects: 190 * Various global and local flags will be set depending on the flags 191 * given 192 */ 193 static void 194 MainParseArgs(int argc, char **argv) 195 { 196 int c, optend; 197 198 #define OPTFLAGS "BD:I:PSV:d:ef:ij:km:nqrst" 199 #define OPTLETTERS "BPSiknqrst" 200 201 optind = 1; /* since we're called more than once */ 202 optreset = 1; 203 optend = 0; 204 while (optind < argc) { 205 if (!optend && argv[optind][0] == '-') { 206 if (argv[optind][1] == '\0') 207 optind++; /* ignore "-" */ 208 else if (argv[optind][1] == '-' && 209 argv[optind][2] == '\0') { 210 optind++; /* ignore "--" */ 211 optend++; /* "--" denotes end of flags */ 212 } 213 } 214 c = optend ? -1 : getopt(argc, argv, OPTFLAGS); 215 switch (c) { 216 case 'D': 217 Var_Set(optarg, "1"); 218 record_option(c, optarg); 219 break; 220 case 'I': 221 Parse_AddIncludeDir(optarg); 222 record_option(c, optarg); 223 break; 224 case 'V': 225 Lst_AtEnd(&varstoprint, optarg); 226 record_option(c, optarg); 227 break; 228 case 'd': { 229 char *modules = optarg; 230 231 for (; *modules; ++modules) 232 switch (*modules) { 233 case 'A': 234 debug = ~0; 235 break; 236 case 'a': 237 debug |= DEBUG_ARCH; 238 break; 239 case 'c': 240 debug |= DEBUG_COND; 241 break; 242 case 'd': 243 debug |= DEBUG_DIR; 244 break; 245 case 'f': 246 debug |= DEBUG_FOR; 247 break; 248 case 'g': 249 if (modules[1] == '1') { 250 debug |= DEBUG_GRAPH1; 251 ++modules; 252 } 253 else if (modules[1] == '2') { 254 debug |= DEBUG_GRAPH2; 255 ++modules; 256 } 257 break; 258 case 'j': 259 debug |= DEBUG_JOB; 260 break; 261 case 'J': 262 debug |= DEBUG_JOBBANNER; 263 break; 264 case 'l': 265 debug |= DEBUG_LOUD; 266 break; 267 case 'm': 268 debug |= DEBUG_MAKE; 269 break; 270 case 'p': 271 debug |= DEBUG_PARALLEL; 272 break; 273 case 's': 274 debug |= DEBUG_SUFF; 275 break; 276 case 't': 277 debug |= DEBUG_TARG; 278 break; 279 case 'v': 280 debug |= DEBUG_VAR; 281 break; 282 default: 283 (void)fprintf(stderr, 284 "make: illegal argument to -d option -- %c\n", 285 *modules); 286 usage(); 287 } 288 record_option(c, optarg); 289 break; 290 } 291 case 'f': 292 Lst_AtEnd(&makefiles, optarg); 293 break; 294 case 'j': { 295 char *endptr; 296 297 forceJobs = true; 298 maxJobs = strtol(optarg, &endptr, 0); 299 if (endptr == optarg) { 300 fprintf(stderr, 301 "make: illegal argument to -j option -- %s -- not a number\n", 302 optarg); 303 usage(); 304 } 305 record_option(c, optarg); 306 break; 307 } 308 case 'm': 309 Dir_AddDir(systemIncludePath, optarg); 310 record_option(c, optarg); 311 break; 312 case -1: 313 /* Check for variable assignments and targets. */ 314 if (argv[optind] != NULL && 315 !Parse_CmdlineVar(argv[optind])) { 316 if (!*argv[optind]) 317 Punt("illegal (null) argument."); 318 Lst_AtEnd(create, estrdup(argv[optind])); 319 } 320 optind++; /* skip over non-option */ 321 break; 322 default: 323 posixParseOptLetter(c); 324 } 325 } 326 327 } 328 329 /*- 330 * Main_ParseArgLine -- 331 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 332 * is encountered and by main() when reading the .MAKEFLAGS envariable. 333 * Takes a line of arguments and breaks it into its 334 * component words and passes those words and the number of them to the 335 * MainParseArgs function. 336 * The line should have all its leading whitespace removed. 337 * 338 * Side Effects: 339 * Only those that come from the various arguments. 340 */ 341 void 342 Main_ParseArgLine(const char *line) /* Line to fracture */ 343 { 344 char **argv; /* Manufactured argument vector */ 345 int argc; /* Number of arguments in argv */ 346 char *args; /* Space used by the args */ 347 char *buf; 348 char *argv0; 349 const char *s; 350 size_t len; 351 352 353 if (line == NULL) 354 return; 355 for (; *line == ' '; ++line) 356 continue; 357 if (!*line) 358 return; 359 360 /* POSIX rule: MAKEFLAGS can hold a set of option letters without 361 * any blanks or dashes. */ 362 for (s = line;; s++) { 363 if (*s == '\0') { 364 while (line != s) 365 posixParseOptLetter(*line++); 366 return; 367 } 368 if (strchr(OPTLETTERS, *s) == NULL) 369 break; 370 } 371 argv0 = Var_Value(".MAKE"); 372 len = strlen(line) + strlen(argv0) + 2; 373 buf = emalloc(len); 374 (void)snprintf(buf, len, "%s %s", argv0, line); 375 376 argv = brk_string(buf, &argc, &args); 377 free(buf); 378 MainParseArgs(argc, argv); 379 380 free(args); 381 free(argv); 382 } 383 384 /* Add a :-separated path to a Lst of directories. */ 385 static void 386 add_dirpath(Lst l, const char *n) 387 { 388 const char *start; 389 const char *cp; 390 391 for (start = n;;) { 392 for (cp = start; *cp != '\0' && *cp != ':';) 393 cp++; 394 Dir_AddDiri(l, start, cp); 395 if (*cp == '\0') 396 break; 397 else 398 start= cp+1; 399 } 400 } 401 402 /* 403 * Get the name of this type of MACHINE from utsname so we can share an 404 * executable for similar machines. (i.e. m68k: amiga hp300, mac68k, sun3, ...) 405 * 406 * Note that both MACHINE and MACHINE_ARCH are decided at 407 * run-time. 408 */ 409 static char * 410 figure_out_MACHINE() 411 { 412 char *r = getenv("MACHINE"); 413 if (r == NULL) { 414 #ifndef MAKE_BOOTSTRAP 415 static struct utsname utsname; 416 417 if (uname(&utsname) == -1) { 418 perror("make: uname"); 419 exit(2); 420 } 421 r = utsname.machine; 422 #else 423 r = MACHINE; 424 #endif 425 } 426 return r; 427 } 428 429 static char * 430 figure_out_MACHINE_ARCH() 431 { 432 char *r = getenv("MACHINE_ARCH"); 433 if (r == NULL) { 434 #ifndef MACHINE_ARCH 435 r = "unknown"; /* XXX: no uname -p yet */ 436 #else 437 r = MACHINE_ARCH; 438 #endif 439 } 440 return r; 441 } 442 443 /* get rid of resource limit on file descriptors */ 444 static void 445 no_fd_limits() 446 { 447 #ifdef RLIMIT_NOFILE 448 struct rlimit rl; 449 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 450 rl.rlim_cur != rl.rlim_max) { 451 rl.rlim_cur = rl.rlim_max; 452 (void)setrlimit(RLIMIT_NOFILE, &rl); 453 } 454 #endif 455 } 456 457 static char * 458 figure_out_CURDIR() 459 { 460 char *dir, *cwd; 461 struct stat sa, sb; 462 463 /* curdir is cwd... */ 464 cwd = dogetcwd(); 465 if (cwd == NULL) { 466 (void)fprintf(stderr, "make: %s.\n", strerror(errno)); 467 exit(2); 468 } 469 470 if (stat(cwd, &sa) == -1) { 471 (void)fprintf(stderr, "make: %s: %s.\n", cwd, strerror(errno)); 472 exit(2); 473 } 474 475 /* ...but we can use the alias $PWD if we can prove it is the same 476 * directory */ 477 if ((dir = getenv("PWD")) != NULL) { 478 if (stat(dir, &sb) == 0 && sa.st_ino == sb.st_ino && 479 sa.st_dev == sb.st_dev) { 480 free(cwd); 481 return estrdup(dir); 482 } 483 } 484 485 return cwd; 486 } 487 488 static char * 489 chdir_verify_path(const char *path, struct dirs *d) 490 { 491 struct stat sb; 492 493 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 494 if (chdir(path)) { 495 (void)fprintf(stderr, "make warning: %s: %s.\n", 496 path, strerror(errno)); 497 return NULL; 498 } else { 499 if (path[0] != '/') 500 return Str_concat(d->current, path, '/'); 501 else 502 return estrdup(path); 503 } 504 } 505 506 return NULL; 507 } 508 509 static char * 510 concat_verify(const char *p1, const char *p2, char c, struct dirs *d) 511 { 512 char *tmp = Str_concat(p1, p2, c); 513 char *result = chdir_verify_path(tmp, d); 514 free(tmp); 515 return result; 516 } 517 518 static void 519 setup_CURDIR_OBJDIR(struct dirs *d, const char *machine) 520 { 521 char *path, *prefix; 522 523 d->current = figure_out_CURDIR(); 524 d->object = NULL; 525 /* 526 * If the MAKEOBJDIR (or by default, the _PATH_OBJDIR) directory 527 * exists, change into it and build there. (If a .${MACHINE} suffix 528 * exists, use that directory instead). 529 * Otherwise check MAKEOBJDIRPREFIX`cwd` (or by default, 530 * _PATH_OBJDIRPREFIX`cwd`) and build there if it exists. 531 * If all fails, use the current directory to build. 532 * 533 * Once things are initted, 534 * have to add the original directory to the search path, 535 * and modify the paths for the Makefiles appropriately. The 536 * current directory is also placed as a variable for make scripts. 537 */ 538 if ((prefix = getenv("MAKEOBJDIRPREFIX")) != NULL) { 539 d->object = concat_verify(prefix, d->current, 0, d); 540 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 541 d->object = chdir_verify_path(path, d); 542 } else { 543 path = _PATH_OBJDIR; 544 prefix = _PATH_OBJDIRPREFIX; 545 d->object = concat_verify(path, machine, '.', d); 546 if (!d->object) 547 d->object=chdir_verify_path(path, d); 548 if (!d->object) 549 d->object = concat_verify(prefix, d->current, 0, d); 550 } 551 if (d->object == NULL) 552 d->object = d->current; 553 } 554 555 #ifdef CLEANUP 556 static void 557 free_CURDIR_OBJDIR(struct dirs *d) 558 { 559 if (d->object != d->current) 560 free(d->object); 561 free(d->current); 562 } 563 #endif 564 565 566 /* 567 * if the VPATH variable is defined, add its contents to the search path. 568 * Uses the same format as the PATH env variable, i.e., 569 * <directory>:<directory>:<directory>... 570 */ 571 static void 572 setup_VPATH() 573 { 574 if (Var_Value("VPATH") != NULL) { 575 char *vpath; 576 577 vpath = Var_Subst("${VPATH}", NULL, false); 578 add_dirpath(defaultPath, vpath); 579 (void)free(vpath); 580 } 581 } 582 583 static void 584 read_makefile_list(Lst mk, struct dirs *d) 585 { 586 LstNode ln; 587 ln = Lst_Find(mk, ReadMakefile, d); 588 if (ln != NULL) 589 Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); 590 } 591 592 static void 593 read_all_make_rules(bool noBuiltins, bool read_depend, 594 Lst makefiles, struct dirs *d) 595 { 596 /* 597 * Read in the built-in rules first, followed by the specified 598 * makefile(s), or the default BSDmakefile, Makefile or 599 * makefile, in that order. 600 */ 601 if (!noBuiltins) { 602 LIST sysMkPath; /* Path of sys.mk */ 603 604 Lst_Init(&sysMkPath); 605 Dir_Expand(_PATH_DEFSYSMK, systemIncludePath, &sysMkPath); 606 if (Lst_IsEmpty(&sysMkPath)) 607 Fatal("make: no system rules (%s).", _PATH_DEFSYSMK); 608 609 read_makefile_list(&sysMkPath, d); 610 #ifdef CLEANUP 611 Lst_Destroy(&sysMkPath, (SimpleProc)free); 612 #endif 613 } 614 615 if (!Lst_IsEmpty(makefiles)) { 616 read_makefile_list(makefiles, d); 617 } else if (!ReadMakefile("BSDmakefile", d)) 618 if (!ReadMakefile("makefile", d)) 619 (void)ReadMakefile("Makefile", d); 620 621 /* read a .depend file, if it exists, and we're not building depend */ 622 623 if (read_depend) 624 (void)ReadMakefile(".depend", d); 625 } 626 627 628 int main(int, char **); 629 /*- 630 * main -- 631 * The main function, for obvious reasons. Initializes variables 632 * and a few modules, then parses the arguments give it in the 633 * environment and on the command line. Reads the system makefile 634 * followed by either Makefile, makefile or the file given by the 635 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 636 * flags it has received by then uses either the Make or the Compat 637 * module to create the initial list of targets. 638 * 639 * Results: 640 * If -q was given, exits -1 if anything was out-of-date. Else it exits 641 * 0. 642 * 643 * Side Effects: 644 * The program exits when done. Targets are created. etc. etc. etc. 645 */ 646 int 647 main(int argc, char **argv) 648 { 649 static LIST targs; /* target nodes to create */ 650 bool outOfDate = true; /* false if all targets up to date */ 651 char *machine = figure_out_MACHINE(); 652 char *machine_arch = figure_out_MACHINE_ARCH(); 653 const char *syspath = _PATH_DEFSYSPATH; 654 char *p; 655 static struct dirs d; 656 bool read_depend = true;/* false if we don't want to read .depend */ 657 658 no_fd_limits(); 659 setup_CURDIR_OBJDIR(&d, machine); 660 661 esetenv("PWD", d.object); 662 unsetenv("CDPATH"); 663 664 Static_Lst_Init(create); 665 Static_Lst_Init(&makefiles); 666 Static_Lst_Init(&varstoprint); 667 Static_Lst_Init(&targs); 668 669 beSilent = false; /* Print commands as executed */ 670 ignoreErrors = false; /* Pay attention to non-zero returns */ 671 noExecute = false; /* Execute all commands */ 672 keepgoing = false; /* Stop on error */ 673 allPrecious = false; /* Remove targets when interrupted */ 674 queryFlag = false; /* This is not just a check-run */ 675 noBuiltins = false; /* Read the built-in rules */ 676 touchFlag = false; /* Actually update targets */ 677 debug = 0; /* No debug verbosity, please. */ 678 679 maxJobs = DEFMAXJOBS; 680 compatMake = false; /* No compat mode */ 681 682 683 /* 684 * Initialize all external modules. 685 */ 686 Init(); 687 688 if (d.object != d.current) 689 Dir_AddDir(defaultPath, d.current); 690 Var_Set(".CURDIR", d.current); 691 Var_Set(".OBJDIR", d.object); 692 Targ_setdirs(d.current, d.object); 693 694 /* 695 * Initialize various variables. 696 * MAKE also gets this name, for compatibility 697 * .MAKEFLAGS gets set to the empty string just in case. 698 * MFLAGS also gets initialized empty, for compatibility. 699 */ 700 Var_Set("MAKE", argv[0]); 701 Var_Set(".MAKE", argv[0]); 702 Var_Set(MAKEFLAGS, ""); 703 Var_Set("MFLAGS", ""); 704 Var_Set("MACHINE", machine); 705 Var_Set("MACHINE_ARCH", machine_arch); 706 707 /* 708 * First snag any flags out of the MAKEFLAGS environment variable. 709 */ 710 Main_ParseArgLine(getenv("MAKEFLAGS")); 711 712 MainParseArgs(argc, argv); 713 714 /* 715 * Be compatible if user did not specify -j and did not explicitly 716 * turn compatibility on 717 */ 718 if (!compatMake && !forceJobs) 719 compatMake = true; 720 721 /* And set up everything for sub-makes */ 722 Var_AddCmdline(MAKEFLAGS); 723 724 725 /* 726 * Set up the .TARGETS variable to contain the list of targets to be 727 * created. If none specified, make the variable empty -- the parser 728 * will fill the thing in with the default or .MAIN target. 729 */ 730 if (!Lst_IsEmpty(create)) { 731 LstNode ln; 732 733 for (ln = Lst_First(create); ln != NULL; ln = Lst_Adv(ln)) { 734 char *name = (char *)Lst_Datum(ln); 735 736 if (strcmp(name, "depend") == 0) 737 read_depend = false; 738 739 Var_Append(".TARGETS", name); 740 } 741 } else 742 Var_Set(".TARGETS", ""); 743 744 745 /* 746 * If no user-supplied system path was given (through the -m option) 747 * add the directories from the DEFSYSPATH (more than one may be given 748 * as dir1:...:dirn) to the system include path. 749 */ 750 if (Lst_IsEmpty(systemIncludePath)) 751 add_dirpath(systemIncludePath, syspath); 752 753 read_all_make_rules(noBuiltins, read_depend, &makefiles, &d); 754 755 Var_Append("MFLAGS", Var_Value(MAKEFLAGS)); 756 757 /* Install all the flags into the MAKEFLAGS env variable. */ 758 if (((p = Var_Value(MAKEFLAGS)) != NULL) && *p) 759 esetenv("MAKEFLAGS", p); 760 761 setup_VPATH(); 762 763 process_suffixes_after_makefile_is_read(); 764 765 /* Print the initial graph, if the user requested it. */ 766 if (DEBUG(GRAPH1)) 767 Targ_PrintGraph(1); 768 769 /* Print the values of any variables requested by the user. */ 770 if (!Lst_IsEmpty(&varstoprint)) { 771 LstNode ln; 772 773 for (ln = Lst_First(&varstoprint); ln != NULL; 774 ln = Lst_Adv(ln)) { 775 char *value = Var_Value((char *)Lst_Datum(ln)); 776 777 printf("%s\n", value ? value : ""); 778 } 779 } else { 780 /* Have now read the entire graph and need to make a list 781 * of targets to create. If none was given on the command 782 * line, we consult the parsing module to find the main 783 * target(s) to create. */ 784 if (Lst_IsEmpty(create)) 785 Parse_MainName(&targs); 786 else 787 Targ_FindList(&targs, create); 788 789 if (compatMake) 790 /* Compat_Init will take care of creating all the 791 * targets as well as initializing the module. */ 792 Compat_Run(&targs); 793 else { 794 /* Initialize job module before traversing the graph, 795 * now that any .BEGIN and .END targets have been 796 * read. This is done only if the -q flag wasn't given 797 * (to prevent the .BEGIN from being executed should 798 * it exist). */ 799 if (!queryFlag) 800 Job_Init(maxJobs); 801 802 /* Traverse the graph, checking on all the targets. */ 803 outOfDate = Make_Run(&targs); 804 } 805 } 806 807 #ifdef CLEANUP 808 Lst_Destroy(&targs, NOFREE); 809 Lst_Destroy(&varstoprint, NOFREE); 810 Lst_Destroy(&makefiles, NOFREE); 811 Lst_Destroy(create, (SimpleProc)free); 812 #endif 813 814 /* print the graph now it's been processed if the user requested it */ 815 if (DEBUG(GRAPH2)) 816 Targ_PrintGraph(2); 817 818 #ifdef CLEANUP 819 free_CURDIR_OBJDIR(&d); 820 End(); 821 #endif 822 if (queryFlag && outOfDate) 823 return 1; 824 else 825 return 0; 826 } 827 828 /*- 829 * ReadMakefile -- 830 * Open and parse the given makefile. 831 * 832 * Results: 833 * true if ok. false if couldn't open file. 834 * 835 * Side Effects: 836 * lots 837 */ 838 static bool 839 ReadMakefile(void *p, void *q) 840 { 841 char *fname = (char *)p; /* makefile to read */ 842 struct dirs *d = (struct dirs *)q; 843 FILE *stream; 844 char *name; 845 846 if (!strcmp(fname, "-")) { 847 Var_Set("MAKEFILE", ""); 848 Parse_File(estrdup("(stdin)"), stdin); 849 } else { 850 if ((stream = fopen(fname, "r")) != NULL) 851 goto found; 852 /* if we've chdir'd, rebuild the path name */ 853 if (d->current != d->object && *fname != '/') { 854 char *path; 855 856 path = Str_concat(d->current, fname, '/'); 857 if ((stream = fopen(path, "r")) == NULL) 858 free(path); 859 else { 860 fname = path; 861 goto found; 862 } 863 } 864 /* look in -I and system include directories. */ 865 name = Dir_FindFile(fname, userIncludePath); 866 if (!name) 867 name = Dir_FindFile(fname, systemIncludePath); 868 if (!name || !(stream = fopen(name, "r"))) 869 return false; 870 fname = name; 871 /* 872 * set the MAKEFILE variable desired by System V fans -- the 873 * placement of the setting here means it gets set to the last 874 * makefile specified, as it is set by SysV make. 875 */ 876 found: Var_Set("MAKEFILE", fname); 877 Parse_File(fname, stream); 878 } 879 return true; 880 } 881 882 883 /* 884 * usage -- 885 * exit with usage message 886 */ 887 static void 888 usage() 889 { 890 (void)fprintf(stderr, 891 "usage: make [-BeiknPqrSst] [-D variable] [-d flags] [-f makefile]\n\ 892 [-I directory] [-j max_jobs] [-m directory] [-V variable]\n\ 893 [NAME=value] [target ...]\n"); 894 exit(2); 895 } 896 897 898