main.c revision 1.1.1.2
1 /* 2 * Copyright (c) 1988, 1989, 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * Copyright (c) 1989 by Berkeley Softworks 5 * 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. 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 #ifndef lint 40 static char copyright[] = 41 "@(#) Copyright (c) 1988, 1989, 1990, 1993\n\ 42 The Regents of the University of California. All rights reserved.\n"; 43 #endif /* not lint */ 44 45 #ifndef lint 46 static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 4/28/95"; 47 #endif /* not lint */ 48 49 /*- 50 * main.c -- 51 * The main file for this entire program. Exit routines etc 52 * reside here. 53 * 54 * Utility functions defined in this file: 55 * Main_ParseArgLine Takes a line of arguments, breaks them and 56 * treats them as if they were given when first 57 * invoked. Used by the parse module to implement 58 * the .MFLAGS target. 59 * 60 * Error Print a tagged error message. The global 61 * MAKE variable must have been defined. This 62 * takes a format string and two optional 63 * arguments for it. 64 * 65 * Fatal Print an error message and exit. Also takes 66 * a format string and two arguments. 67 * 68 * Punt Aborts all jobs and exits with a message. Also 69 * takes a format string and two arguments. 70 * 71 * Finish Finish things up by printing the number of 72 * errors which occured, as passed to it, and 73 * exiting. 74 */ 75 76 #include <sys/types.h> 77 #include <sys/time.h> 78 #include <sys/param.h> 79 #include <sys/resource.h> 80 #include <sys/signal.h> 81 #include <sys/stat.h> 82 #include <sys/utsname.h> 83 #include <errno.h> 84 #include <fcntl.h> 85 #include <stdio.h> 86 #if __STDC__ 87 #include <stdarg.h> 88 #else 89 #include <varargs.h> 90 #endif 91 #include "make.h" 92 #include "hash.h" 93 #include "dir.h" 94 #include "job.h" 95 #include "pathnames.h" 96 97 #ifndef DEFMAXLOCAL 98 #define DEFMAXLOCAL DEFMAXJOBS 99 #endif DEFMAXLOCAL 100 101 #define MAKEFLAGS ".MAKEFLAGS" 102 103 Lst create; /* Targets to be made */ 104 time_t now; /* Time at start of make */ 105 GNode *DEFAULT; /* .DEFAULT node */ 106 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 107 108 static Boolean noBuiltins; /* -r flag */ 109 static Lst makefiles; /* ordered list of makefiles to read */ 110 int maxJobs; /* -J argument */ 111 static int maxLocal; /* -L argument */ 112 Boolean compatMake; /* -B argument */ 113 Boolean debug; /* -d flag */ 114 Boolean noExecute; /* -n flag */ 115 Boolean keepgoing; /* -k flag */ 116 Boolean queryFlag; /* -q flag */ 117 Boolean touchFlag; /* -t flag */ 118 Boolean usePipes; /* !-P flag */ 119 Boolean ignoreErrors; /* -i flag */ 120 Boolean beSilent; /* -s flag */ 121 Boolean oldVars; /* variable substitution style */ 122 Boolean checkEnvFirst; /* -e flag */ 123 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 124 125 static Boolean ReadMakefile(); 126 static void usage(); 127 128 static char *curdir; /* startup directory */ 129 static char *objdir; /* where we chdir'ed to */ 130 131 /*- 132 * MainParseArgs -- 133 * Parse a given argument vector. Called from main() and from 134 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 135 * 136 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 137 * 138 * Results: 139 * None 140 * 141 * Side Effects: 142 * Various global and local flags will be set depending on the flags 143 * given 144 */ 145 static void 146 MainParseArgs(argc, argv) 147 int argc; 148 char **argv; 149 { 150 extern int optind; 151 extern char *optarg; 152 int c; 153 154 optind = 1; /* since we're called more than once */ 155 #ifdef notyet 156 # define OPTFLAGS "BD:I:L:PSd:ef:ij:knqrst" 157 #else 158 # define OPTFLAGS "D:I:d:ef:ij:knqrst" 159 #endif 160 rearg: while((c = getopt(argc, argv, OPTFLAGS)) != EOF) { 161 switch(c) { 162 case 'D': 163 Var_Set(optarg, "1", VAR_GLOBAL); 164 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 165 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 166 break; 167 case 'I': 168 Parse_AddIncludeDir(optarg); 169 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 170 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 171 break; 172 #ifdef notyet 173 case 'B': 174 compatMake = TRUE; 175 break; 176 case 'L': 177 maxLocal = atoi(optarg); 178 Var_Append(MAKEFLAGS, "-L", VAR_GLOBAL); 179 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 180 break; 181 case 'P': 182 usePipes = FALSE; 183 Var_Append(MAKEFLAGS, "-P", VAR_GLOBAL); 184 break; 185 case 'S': 186 keepgoing = FALSE; 187 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 188 break; 189 #endif 190 case 'd': { 191 char *modules = optarg; 192 193 for (; *modules; ++modules) 194 switch (*modules) { 195 case 'A': 196 debug = ~0; 197 break; 198 case 'a': 199 debug |= DEBUG_ARCH; 200 break; 201 case 'c': 202 debug |= DEBUG_COND; 203 break; 204 case 'd': 205 debug |= DEBUG_DIR; 206 break; 207 case 'f': 208 debug |= DEBUG_FOR; 209 break; 210 case 'g': 211 if (modules[1] == '1') { 212 debug |= DEBUG_GRAPH1; 213 ++modules; 214 } 215 else if (modules[1] == '2') { 216 debug |= DEBUG_GRAPH2; 217 ++modules; 218 } 219 break; 220 case 'j': 221 debug |= DEBUG_JOB; 222 break; 223 case 'm': 224 debug |= DEBUG_MAKE; 225 break; 226 case 's': 227 debug |= DEBUG_SUFF; 228 break; 229 case 't': 230 debug |= DEBUG_TARG; 231 break; 232 case 'v': 233 debug |= DEBUG_VAR; 234 break; 235 default: 236 (void)fprintf(stderr, 237 "make: illegal argument to d option -- %c\n", 238 *modules); 239 usage(); 240 } 241 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 242 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 243 break; 244 } 245 case 'e': 246 checkEnvFirst = TRUE; 247 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 248 break; 249 case 'f': 250 (void)Lst_AtEnd(makefiles, (ClientData)optarg); 251 break; 252 case 'i': 253 ignoreErrors = TRUE; 254 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 255 break; 256 case 'j': 257 maxJobs = atoi(optarg); 258 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 259 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 260 break; 261 case 'k': 262 keepgoing = TRUE; 263 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 264 break; 265 case 'n': 266 noExecute = TRUE; 267 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 268 break; 269 case 'q': 270 queryFlag = TRUE; 271 /* Kind of nonsensical, wot? */ 272 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 273 break; 274 case 'r': 275 noBuiltins = TRUE; 276 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 277 break; 278 case 's': 279 beSilent = TRUE; 280 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 281 break; 282 case 't': 283 touchFlag = TRUE; 284 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 285 break; 286 default: 287 case '?': 288 usage(); 289 } 290 } 291 292 oldVars = TRUE; 293 294 /* 295 * See if the rest of the arguments are variable assignments and 296 * perform them if so. Else take them to be targets and stuff them 297 * on the end of the "create" list. 298 */ 299 for (argv += optind, argc -= optind; *argv; ++argv, --argc) 300 if (Parse_IsVar(*argv)) 301 Parse_DoVar(*argv, VAR_CMD); 302 else { 303 if (!**argv) 304 Punt("illegal (null) argument."); 305 if (**argv == '-') { 306 if ((*argv)[1]) 307 optind = 0; /* -flag... */ 308 else 309 optind = 1; /* - */ 310 goto rearg; 311 } 312 (void)Lst_AtEnd(create, (ClientData)strdup(*argv)); 313 } 314 } 315 316 /*- 317 * Main_ParseArgLine -- 318 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 319 * is encountered and by main() when reading the .MAKEFLAGS envariable. 320 * Takes a line of arguments and breaks it into its 321 * component words and passes those words and the number of them to the 322 * MainParseArgs function. 323 * The line should have all its leading whitespace removed. 324 * 325 * Results: 326 * None 327 * 328 * Side Effects: 329 * Only those that come from the various arguments. 330 */ 331 void 332 Main_ParseArgLine(line) 333 char *line; /* Line to fracture */ 334 { 335 char **argv; /* Manufactured argument vector */ 336 int argc; /* Number of arguments in argv */ 337 338 if (line == NULL) 339 return; 340 for (; *line == ' '; ++line) 341 continue; 342 if (!*line) 343 return; 344 345 argv = brk_string(line, &argc, TRUE); 346 MainParseArgs(argc, argv); 347 } 348 349 /*- 350 * main -- 351 * The main function, for obvious reasons. Initializes variables 352 * and a few modules, then parses the arguments give it in the 353 * environment and on the command line. Reads the system makefile 354 * followed by either Makefile, makefile or the file given by the 355 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 356 * flags it has received by then uses either the Make or the Compat 357 * module to create the initial list of targets. 358 * 359 * Results: 360 * If -q was given, exits -1 if anything was out-of-date. Else it exits 361 * 0. 362 * 363 * Side Effects: 364 * The program exits when done. Targets are created. etc. etc. etc. 365 */ 366 int 367 main(argc, argv) 368 int argc; 369 char **argv; 370 { 371 Lst targs; /* target nodes to create -- passed to Make_Init */ 372 Boolean outOfDate = TRUE; /* FALSE if all targets up to date */ 373 struct stat sb, sa; 374 char *p, *p1, *path, *pwd, *getenv(), *getwd(); 375 char mdpath[MAXPATHLEN + 1]; 376 char obpath[MAXPATHLEN + 1]; 377 char cdpath[MAXPATHLEN + 1]; 378 struct utsname utsname; 379 char *machine = getenv("MACHINE"); 380 381 /* 382 * Find where we are and take care of PWD for the automounter... 383 * All this code is so that we know where we are when we start up 384 * on a different machine with pmake. 385 */ 386 curdir = cdpath; 387 if (getcwd(curdir, MAXPATHLEN) == NULL) { 388 (void)fprintf(stderr, "make: %s.\n", strerror(errno)); 389 exit(2); 390 } 391 392 if (stat(curdir, &sa) == -1) { 393 (void)fprintf(stderr, "make: %s: %s.\n", 394 curdir, strerror(errno)); 395 exit(2); 396 } 397 398 if ((pwd = getenv("PWD")) != NULL) { 399 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 400 sa.st_dev == sb.st_dev) 401 (void) strcpy(curdir, pwd); 402 } 403 404 /* 405 * Get the name of this type of MACHINE from utsname 406 * so we can share an executable for similar machines. 407 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 408 * 409 * Note that while MACHINE is decided at run-time, 410 * MACHINE_ARCH is always known at compile time. 411 */ 412 if (!machine) { 413 if (uname(&utsname)) { 414 perror("make: uname"); 415 exit(2); 416 } 417 machine = utsname.machine; 418 } 419 420 /* 421 * if the MAKEOBJDIR (or by default, the _PATH_OBJDIR) directory 422 * exists, change into it and build there. Once things are 423 * initted, have to add the original directory to the search path, 424 * and modify the paths for the Makefiles apropriately. The 425 * current directory is also placed as a variable for make scripts. 426 */ 427 if (!(path = getenv("MAKEOBJDIR"))) { 428 path = _PATH_OBJDIR; 429 (void) sprintf(mdpath, "%s.%s", path, machine); 430 } 431 else 432 (void) strncpy(mdpath, path, MAXPATHLEN + 1); 433 434 if (stat(mdpath, &sb) == 0 && S_ISDIR(sb.st_mode)) { 435 436 if (chdir(mdpath)) { 437 (void)fprintf(stderr, "make warning: %s: %s.\n", 438 mdpath, strerror(errno)); 439 objdir = curdir; 440 } 441 else { 442 if (mdpath[0] != '/') { 443 (void) sprintf(obpath, "%s/%s", curdir, mdpath); 444 objdir = obpath; 445 } 446 else 447 objdir = mdpath; 448 } 449 } 450 else { 451 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 452 453 if (chdir(path)) { 454 (void)fprintf(stderr, "make warning: %s: %s.\n", 455 path, strerror(errno)); 456 objdir = curdir; 457 } 458 else { 459 if (path[0] != '/') { 460 (void) sprintf(obpath, "%s/%s", curdir, 461 path); 462 objdir = obpath; 463 } 464 else 465 objdir = obpath; 466 } 467 } 468 else 469 objdir = curdir; 470 } 471 472 setenv("PWD", objdir, 1); 473 474 create = Lst_Init(FALSE); 475 makefiles = Lst_Init(FALSE); 476 beSilent = FALSE; /* Print commands as executed */ 477 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 478 noExecute = FALSE; /* Execute all commands */ 479 keepgoing = FALSE; /* Stop on error */ 480 allPrecious = FALSE; /* Remove targets when interrupted */ 481 queryFlag = FALSE; /* This is not just a check-run */ 482 noBuiltins = FALSE; /* Read the built-in rules */ 483 touchFlag = FALSE; /* Actually update targets */ 484 usePipes = TRUE; /* Catch child output in pipes */ 485 debug = 0; /* No debug verbosity, please. */ 486 jobsRunning = FALSE; 487 488 maxJobs = DEFMAXJOBS; /* Set default max concurrency */ 489 maxLocal = DEFMAXLOCAL; /* Set default local max concurrency */ 490 #ifdef notyet 491 compatMake = FALSE; /* No compat mode */ 492 #else 493 compatMake = TRUE; /* No compat mode */ 494 #endif 495 496 497 /* 498 * Initialize the parsing, directory and variable modules to prepare 499 * for the reading of inclusion paths and variable settings on the 500 * command line 501 */ 502 Dir_Init(); /* Initialize directory structures so -I flags 503 * can be processed correctly */ 504 Parse_Init(); /* Need to initialize the paths of #include 505 * directories */ 506 Var_Init(); /* As well as the lists of variables for 507 * parsing arguments */ 508 str_init(); 509 if (objdir != curdir) 510 Dir_AddDir(dirSearchPath, curdir); 511 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 512 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 513 514 /* 515 * Initialize various variables. 516 * MAKE also gets this name, for compatibility 517 * .MAKEFLAGS gets set to the empty string just in case. 518 * MFLAGS also gets initialized empty, for compatibility. 519 */ 520 Var_Set("MAKE", argv[0], VAR_GLOBAL); 521 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 522 Var_Set("MFLAGS", "", VAR_GLOBAL); 523 Var_Set("MACHINE", machine, VAR_GLOBAL); 524 #ifdef MACHINE_ARCH 525 Var_Set("MACHINE_ARCH", MACHINE_ARCH, VAR_GLOBAL); 526 #endif 527 528 /* 529 * First snag any flags out of the MAKE environment variable. 530 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 531 * in a different format). 532 */ 533 #ifdef POSIX 534 Main_ParseArgLine(getenv("MAKEFLAGS")); 535 #else 536 Main_ParseArgLine(getenv("MAKE")); 537 #endif 538 539 MainParseArgs(argc, argv); 540 541 /* 542 * Initialize archive, target and suffix modules in preparation for 543 * parsing the makefile(s) 544 */ 545 Arch_Init(); 546 Targ_Init(); 547 Suff_Init(); 548 549 DEFAULT = NILGNODE; 550 (void)time(&now); 551 552 /* 553 * Set up the .TARGETS variable to contain the list of targets to be 554 * created. If none specified, make the variable empty -- the parser 555 * will fill the thing in with the default or .MAIN target. 556 */ 557 if (!Lst_IsEmpty(create)) { 558 LstNode ln; 559 560 for (ln = Lst_First(create); ln != NILLNODE; 561 ln = Lst_Succ(ln)) { 562 char *name = (char *)Lst_Datum(ln); 563 564 Var_Append(".TARGETS", name, VAR_GLOBAL); 565 } 566 } else 567 Var_Set(".TARGETS", "", VAR_GLOBAL); 568 569 /* 570 * Read in the built-in rules first, followed by the specified makefile, 571 * if it was (makefile != (char *) NULL), or the default Makefile and 572 * makefile, in that order, if it wasn't. 573 */ 574 if (!noBuiltins && !ReadMakefile(_PATH_DEFSYSMK)) 575 Fatal("make: no system rules (%s).", _PATH_DEFSYSMK); 576 577 if (!Lst_IsEmpty(makefiles)) { 578 LstNode ln; 579 580 ln = Lst_Find(makefiles, (ClientData)NULL, ReadMakefile); 581 if (ln != NILLNODE) 582 Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); 583 } else if (!ReadMakefile("makefile")) 584 (void)ReadMakefile("Makefile"); 585 586 (void)ReadMakefile(".depend"); 587 588 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 589 if (p1) 590 free(p1); 591 592 /* Install all the flags into the MAKE envariable. */ 593 if (((p = Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1)) != NULL) && *p) 594 #ifdef POSIX 595 setenv("MAKEFLAGS", p, 1); 596 #else 597 setenv("MAKE", p, 1); 598 #endif 599 if (p1) 600 free(p1); 601 602 /* 603 * For compatibility, look at the directories in the VPATH variable 604 * and add them to the search path, if the variable is defined. The 605 * variable's value is in the same format as the PATH envariable, i.e. 606 * <directory>:<directory>:<directory>... 607 */ 608 if (Var_Exists("VPATH", VAR_CMD)) { 609 char *vpath, *path, *cp, savec; 610 /* 611 * GCC stores string constants in read-only memory, but 612 * Var_Subst will want to write this thing, so store it 613 * in an array 614 */ 615 static char VPATH[] = "${VPATH}"; 616 617 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 618 path = vpath; 619 do { 620 /* skip to end of directory */ 621 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 622 continue; 623 /* Save terminator character so know when to stop */ 624 savec = *cp; 625 *cp = '\0'; 626 /* Add directory to search path */ 627 Dir_AddDir(dirSearchPath, path); 628 *cp = savec; 629 path = cp + 1; 630 } while (savec == ':'); 631 (void)free((Address)vpath); 632 } 633 634 /* 635 * Now that all search paths have been read for suffixes et al, it's 636 * time to add the default search path to their lists... 637 */ 638 Suff_DoPaths(); 639 640 /* print the initial graph, if the user requested it */ 641 if (DEBUG(GRAPH1)) 642 Targ_PrintGraph(1); 643 644 /* 645 * Have now read the entire graph and need to make a list of targets 646 * to create. If none was given on the command line, we consult the 647 * parsing module to find the main target(s) to create. 648 */ 649 if (Lst_IsEmpty(create)) 650 targs = Parse_MainName(); 651 else 652 targs = Targ_FindList(create, TARG_CREATE); 653 654 /* 655 * this was original amMake -- want to allow parallelism, so put this 656 * back in, eventually. 657 */ 658 if (!compatMake) { 659 /* 660 * Initialize job module before traversing the graph, now that 661 * any .BEGIN and .END targets have been read. This is done 662 * only if the -q flag wasn't given (to prevent the .BEGIN from 663 * being executed should it exist). 664 */ 665 if (!queryFlag) { 666 if (maxLocal == -1) 667 maxLocal = maxJobs; 668 Job_Init(maxJobs, maxLocal); 669 jobsRunning = TRUE; 670 } 671 672 /* Traverse the graph, checking on all the targets */ 673 outOfDate = Make_Run(targs); 674 } else 675 /* 676 * Compat_Init will take care of creating all the targets as 677 * well as initializing the module. 678 */ 679 Compat_Run(targs); 680 681 Lst_Destroy(targs, NOFREE); 682 Lst_Destroy(makefiles, NOFREE); 683 Lst_Destroy(create, (void (*) __P((ClientData))) free); 684 685 /* print the graph now it's been processed if the user requested it */ 686 if (DEBUG(GRAPH2)) 687 Targ_PrintGraph(2); 688 689 Suff_End(); 690 Targ_End(); 691 Arch_End(); 692 str_end(); 693 Var_End(); 694 Parse_End(); 695 Dir_End(); 696 697 if (queryFlag && outOfDate) 698 return(1); 699 else 700 return(0); 701 } 702 703 /*- 704 * ReadMakefile -- 705 * Open and parse the given makefile. 706 * 707 * Results: 708 * TRUE if ok. FALSE if couldn't open file. 709 * 710 * Side Effects: 711 * lots 712 */ 713 static Boolean 714 ReadMakefile(fname) 715 char *fname; /* makefile to read */ 716 { 717 extern Lst parseIncPath, sysIncPath; 718 FILE *stream; 719 char *name, path[MAXPATHLEN + 1]; 720 721 if (!strcmp(fname, "-")) { 722 Parse_File("(stdin)", stdin); 723 Var_Set("MAKEFILE", "", VAR_GLOBAL); 724 } else { 725 if ((stream = fopen(fname, "r")) != NULL) 726 goto found; 727 /* if we've chdir'd, rebuild the path name */ 728 if (curdir != objdir && *fname != '/') { 729 (void)sprintf(path, "%s/%s", curdir, fname); 730 if ((stream = fopen(path, "r")) != NULL) { 731 fname = path; 732 goto found; 733 } 734 } 735 /* look in -I and system include directories. */ 736 name = Dir_FindFile(fname, parseIncPath); 737 if (!name) 738 name = Dir_FindFile(fname, sysIncPath); 739 if (!name || !(stream = fopen(name, "r"))) 740 return(FALSE); 741 fname = name; 742 /* 743 * set the MAKEFILE variable desired by System V fans -- the 744 * placement of the setting here means it gets set to the last 745 * makefile specified, as it is set by SysV make. 746 */ 747 found: Var_Set("MAKEFILE", fname, VAR_GLOBAL); 748 Parse_File(fname, stream); 749 (void)fclose(stream); 750 } 751 return(TRUE); 752 } 753 754 /*- 755 * Error -- 756 * Print an error message given its format. 757 * 758 * Results: 759 * None. 760 * 761 * Side Effects: 762 * The message is printed. 763 */ 764 /* VARARGS */ 765 void 766 #if __STDC__ 767 Error(char *fmt, ...) 768 #else 769 Error(va_alist) 770 va_dcl 771 #endif 772 { 773 va_list ap; 774 #if __STDC__ 775 va_start(ap, fmt); 776 #else 777 char *fmt; 778 779 va_start(ap); 780 fmt = va_arg(ap, char *); 781 #endif 782 (void)vfprintf(stderr, fmt, ap); 783 va_end(ap); 784 (void)fprintf(stderr, "\n"); 785 (void)fflush(stderr); 786 } 787 788 /*- 789 * Fatal -- 790 * Produce a Fatal error message. If jobs are running, waits for them 791 * to finish. 792 * 793 * Results: 794 * None 795 * 796 * Side Effects: 797 * The program exits 798 */ 799 /* VARARGS */ 800 void 801 #if __STDC__ 802 Fatal(char *fmt, ...) 803 #else 804 Fatal(va_alist) 805 va_dcl 806 #endif 807 { 808 va_list ap; 809 #if __STDC__ 810 va_start(ap, fmt); 811 #else 812 char *fmt; 813 814 va_start(ap); 815 fmt = va_arg(ap, char *); 816 #endif 817 if (jobsRunning) 818 Job_Wait(); 819 820 (void)vfprintf(stderr, fmt, ap); 821 va_end(ap); 822 (void)fprintf(stderr, "\n"); 823 (void)fflush(stderr); 824 825 if (DEBUG(GRAPH2)) 826 Targ_PrintGraph(2); 827 exit(2); /* Not 1 so -q can distinguish error */ 828 } 829 830 /* 831 * Punt -- 832 * Major exception once jobs are being created. Kills all jobs, prints 833 * a message and exits. 834 * 835 * Results: 836 * None 837 * 838 * Side Effects: 839 * All children are killed indiscriminately and the program Lib_Exits 840 */ 841 /* VARARGS */ 842 void 843 #if __STDC__ 844 Punt(char *fmt, ...) 845 #else 846 Punt(va_alist) 847 va_dcl 848 #endif 849 { 850 va_list ap; 851 #if __STDC__ 852 va_start(ap, fmt); 853 #else 854 char *fmt; 855 856 va_start(ap); 857 fmt = va_arg(ap, char *); 858 #endif 859 860 (void)fprintf(stderr, "make: "); 861 (void)vfprintf(stderr, fmt, ap); 862 va_end(ap); 863 (void)fprintf(stderr, "\n"); 864 (void)fflush(stderr); 865 866 DieHorribly(); 867 } 868 869 /*- 870 * DieHorribly -- 871 * Exit without giving a message. 872 * 873 * Results: 874 * None 875 * 876 * Side Effects: 877 * A big one... 878 */ 879 void 880 DieHorribly() 881 { 882 if (jobsRunning) 883 Job_AbortAll(); 884 if (DEBUG(GRAPH2)) 885 Targ_PrintGraph(2); 886 exit(2); /* Not 1, so -q can distinguish error */ 887 } 888 889 /* 890 * Finish -- 891 * Called when aborting due to errors in child shell to signal 892 * abnormal exit. 893 * 894 * Results: 895 * None 896 * 897 * Side Effects: 898 * The program exits 899 */ 900 void 901 Finish(errors) 902 int errors; /* number of errors encountered in Make_Make */ 903 { 904 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 905 } 906 907 /* 908 * emalloc -- 909 * malloc, but die on error. 910 */ 911 char * 912 emalloc(len) 913 size_t len; 914 { 915 char *p; 916 917 if ((p = (char *) malloc(len)) == NULL) 918 enomem(); 919 return(p); 920 } 921 922 /* 923 * enomem -- 924 * die when out of memory. 925 */ 926 void 927 enomem() 928 { 929 (void)fprintf(stderr, "make: %s.\n", strerror(errno)); 930 exit(2); 931 } 932 933 /* 934 * usage -- 935 * exit with usage message 936 */ 937 static void 938 usage() 939 { 940 (void)fprintf(stderr, 941 "usage: make [-eiknqrst] [-D variable] [-d flags] [-f makefile ]\n\ 942 [-I directory] [-j max_jobs] [variable=value]\n"); 943 exit(2); 944 } 945 946 947 int 948 PrintAddr(a, b) 949 ClientData a; 950 ClientData b; 951 { 952 printf("%lx ", (unsigned long) a); 953 return b ? 0 : 0; 954 } 955
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