main.c revision 1.62
1 /* $NetBSD: main.c,v 1.62 2001/01/07 06:16:02 sjg Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * Copyright (c) 1989 by Berkeley Softworks 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Adam de Boor. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 */ 40 41 #ifdef MAKE_BOOTSTRAP 42 static char rcsid[] = "$NetBSD: main.c,v 1.62 2001/01/07 06:16:02 sjg Exp $"; 43 #else 44 #include <sys/cdefs.h> 45 #ifndef lint 46 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\n\ 47 The Regents of the University of California. All rights reserved.\n"); 48 #endif /* not lint */ 49 50 #ifndef lint 51 #if 0 52 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 53 #else 54 __RCSID("$NetBSD: main.c,v 1.62 2001/01/07 06:16:02 sjg Exp $"); 55 #endif 56 #endif /* not lint */ 57 #endif 58 59 /*- 60 * main.c -- 61 * The main file for this entire program. Exit routines etc 62 * reside here. 63 * 64 * Utility functions defined in this file: 65 * Main_ParseArgLine Takes a line of arguments, breaks them and 66 * treats them as if they were given when first 67 * invoked. Used by the parse module to implement 68 * the .MFLAGS target. 69 * 70 * Error Print a tagged error message. The global 71 * MAKE variable must have been defined. This 72 * takes a format string and two optional 73 * arguments for it. 74 * 75 * Fatal Print an error message and exit. Also takes 76 * a format string and two arguments. 77 * 78 * Punt Aborts all jobs and exits with a message. Also 79 * takes a format string and two arguments. 80 * 81 * Finish Finish things up by printing the number of 82 * errors which occured, as passed to it, and 83 * exiting. 84 */ 85 86 #include <sys/types.h> 87 #include <sys/time.h> 88 #include <sys/param.h> 89 #include <sys/resource.h> 90 #include <sys/signal.h> 91 #include <sys/stat.h> 92 #ifndef MAKE_BOOTSTRAP 93 #include <sys/utsname.h> 94 #endif 95 #include <sys/wait.h> 96 #include <errno.h> 97 #include <fcntl.h> 98 #include <stdio.h> 99 #include <stdlib.h> 100 #include <time.h> 101 #ifdef __STDC__ 102 #include <stdarg.h> 103 #else 104 #include <varargs.h> 105 #endif 106 #include "make.h" 107 #include "hash.h" 108 #include "dir.h" 109 #include "job.h" 110 #include "pathnames.h" 111 #include "trace.h" 112 113 #ifndef DEFMAXLOCAL 114 #define DEFMAXLOCAL DEFMAXJOBS 115 #endif /* DEFMAXLOCAL */ 116 117 Lst create; /* Targets to be made */ 118 time_t now; /* Time at start of make */ 119 GNode *DEFAULT; /* .DEFAULT node */ 120 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 121 122 static Boolean noBuiltins; /* -r flag */ 123 static Lst makefiles; /* ordered list of makefiles to read */ 124 static Boolean printVars; /* print value of one or more vars */ 125 static Lst variables; /* list of variables to print */ 126 int maxJobs; /* -j argument */ 127 static int maxLocal; /* -L argument */ 128 Boolean compatMake; /* -B argument */ 129 Boolean debug; /* -d flag */ 130 Boolean noExecute; /* -n flag */ 131 Boolean noRecursiveExecute; /* -N flag */ 132 Boolean keepgoing; /* -k flag */ 133 Boolean queryFlag; /* -q flag */ 134 Boolean touchFlag; /* -t flag */ 135 Boolean usePipes; /* !-P flag */ 136 Boolean ignoreErrors; /* -i flag */ 137 Boolean beSilent; /* -s flag */ 138 Boolean oldVars; /* variable substitution style */ 139 Boolean checkEnvFirst; /* -e flag */ 140 Boolean jobServer; /* -J flag */ 141 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 142 static const char * tracefile; 143 static char * Check_Cwd_av __P((int, char **, int)); 144 static void MainParseArgs __P((int, char **)); 145 char * chdir_verify_path __P((char *, char *)); 146 static int ReadMakefile __P((ClientData, ClientData)); 147 static void usage __P((void)); 148 149 static char *curdir; /* startup directory */ 150 static char *objdir; /* where we chdir'ed to */ 151 static char *progname; /* the program name */ 152 153 Boolean forceJobs = FALSE; 154 155 /*- 156 * MainParseArgs -- 157 * Parse a given argument vector. Called from main() and from 158 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 159 * 160 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 161 * 162 * Results: 163 * None 164 * 165 * Side Effects: 166 * Various global and local flags will be set depending on the flags 167 * given 168 */ 169 static void 170 MainParseArgs(argc, argv) 171 int argc; 172 char **argv; 173 { 174 char *p; 175 int c; 176 177 optind = 1; /* since we're called more than once */ 178 #ifdef REMOTE 179 # define OPTFLAGS "BD:I:J:L:NPST:V:d:ef:ij:km:nqrst" 180 #else 181 # define OPTFLAGS "BD:I:J:NPST:V:d:ef:ij:km:nqrst" 182 #endif 183 rearg: while((c = getopt(argc, argv, OPTFLAGS)) != -1) { 184 switch(c) { 185 case 'D': 186 Var_Set(optarg, "1", VAR_GLOBAL); 187 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 188 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 189 break; 190 case 'I': 191 Parse_AddIncludeDir(optarg); 192 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 193 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 194 break; 195 case 'J': 196 if (sscanf(optarg, "%d,%d", &job_pipe[0], &job_pipe[1]) != 2) { 197 (void)fprintf(stderr, 198 "make: internal error -- J option malformed (%s??)\n", optarg); 199 usage(); 200 } 201 if ((fcntl(job_pipe[0], F_GETFD, 0) < 0) || 202 (fcntl(job_pipe[1], F_GETFD, 0) < 0)) { 203 #if 0 204 (void)fprintf(stderr, 205 "make: warning -- J descriptors were closed!\n"); 206 #endif 207 job_pipe[0] = -1; 208 job_pipe[1] = -1; 209 compatMake = TRUE; 210 } else { 211 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 212 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 213 jobServer = TRUE; 214 } 215 break; 216 case 'V': 217 printVars = TRUE; 218 (void)Lst_AtEnd(variables, (ClientData)optarg); 219 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 220 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 221 break; 222 case 'B': 223 compatMake = TRUE; 224 break; 225 #ifdef REMOTE 226 case 'L': 227 maxLocal = strtol(optarg, &p, 0); 228 if (*p != '\0' || maxLocal < 1) { 229 (void) fprintf(stderr, "make: illegal argument to -L -- must be positive integer!\n"); 230 exit(1); 231 } 232 Var_Append(MAKEFLAGS, "-L", VAR_GLOBAL); 233 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 234 break; 235 #endif 236 case 'N': 237 noExecute = TRUE; 238 noRecursiveExecute = TRUE; 239 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 240 break; 241 case 'P': 242 usePipes = FALSE; 243 Var_Append(MAKEFLAGS, "-P", VAR_GLOBAL); 244 break; 245 case 'S': 246 keepgoing = FALSE; 247 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 248 break; 249 case 'T': 250 tracefile = estrdup(optarg); 251 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 252 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 253 break; 254 case 'd': { 255 char *modules = optarg; 256 257 for (; *modules; ++modules) 258 switch (*modules) { 259 case 'A': 260 debug = ~0; 261 break; 262 case 'a': 263 debug |= DEBUG_ARCH; 264 break; 265 case 'c': 266 debug |= DEBUG_COND; 267 break; 268 case 'd': 269 debug |= DEBUG_DIR; 270 break; 271 case 'f': 272 debug |= DEBUG_FOR; 273 break; 274 case 'g': 275 if (modules[1] == '1') { 276 debug |= DEBUG_GRAPH1; 277 ++modules; 278 } 279 else if (modules[1] == '2') { 280 debug |= DEBUG_GRAPH2; 281 ++modules; 282 } 283 break; 284 case 'j': 285 debug |= DEBUG_JOB; 286 break; 287 case 'm': 288 debug |= DEBUG_MAKE; 289 break; 290 case 's': 291 debug |= DEBUG_SUFF; 292 break; 293 case 't': 294 debug |= DEBUG_TARG; 295 break; 296 case 'v': 297 debug |= DEBUG_VAR; 298 break; 299 default: 300 (void)fprintf(stderr, 301 "make: illegal argument to d option -- %c\n", 302 *modules); 303 usage(); 304 } 305 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 306 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 307 break; 308 } 309 case 'e': 310 checkEnvFirst = TRUE; 311 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 312 break; 313 case 'f': 314 (void)Lst_AtEnd(makefiles, (ClientData)optarg); 315 break; 316 case 'i': 317 ignoreErrors = TRUE; 318 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 319 break; 320 case 'j': 321 forceJobs = TRUE; 322 maxJobs = strtol(optarg, &p, 0); 323 if (*p != '\0' || maxJobs < 1) { 324 (void) fprintf(stderr, "make: illegal argument to -j -- must be positive integer!\n"); 325 exit(1); 326 } 327 #ifndef REMOTE 328 maxLocal = maxJobs; 329 #endif 330 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 331 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 332 break; 333 case 'k': 334 keepgoing = TRUE; 335 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 336 break; 337 case 'm': 338 (void) Dir_AddDir(sysIncPath, optarg); 339 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 340 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 341 break; 342 case 'n': 343 noExecute = TRUE; 344 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 345 break; 346 case 'q': 347 queryFlag = TRUE; 348 /* Kind of nonsensical, wot? */ 349 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 350 break; 351 case 'r': 352 noBuiltins = TRUE; 353 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 354 break; 355 case 's': 356 beSilent = TRUE; 357 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 358 break; 359 case 't': 360 touchFlag = TRUE; 361 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 362 break; 363 default: 364 case '?': 365 usage(); 366 } 367 } 368 369 oldVars = TRUE; 370 371 /* 372 * See if the rest of the arguments are variable assignments and 373 * perform them if so. Else take them to be targets and stuff them 374 * on the end of the "create" list. 375 */ 376 for (argv += optind, argc -= optind; *argv; ++argv, --argc) 377 if (Parse_IsVar(*argv)) 378 Parse_DoVar(*argv, VAR_CMD); 379 else { 380 if (!**argv) 381 Punt("illegal (null) argument."); 382 if (**argv == '-') { 383 if ((*argv)[1]) 384 optind = 0; /* -flag... */ 385 else 386 optind = 1; /* - */ 387 goto rearg; 388 } 389 (void)Lst_AtEnd(create, (ClientData)estrdup(*argv)); 390 } 391 } 392 393 /*- 394 * Main_ParseArgLine -- 395 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 396 * is encountered and by main() when reading the .MAKEFLAGS envariable. 397 * Takes a line of arguments and breaks it into its 398 * component words and passes those words and the number of them to the 399 * MainParseArgs function. 400 * The line should have all its leading whitespace removed. 401 * 402 * Results: 403 * None 404 * 405 * Side Effects: 406 * Only those that come from the various arguments. 407 */ 408 void 409 Main_ParseArgLine(line) 410 char *line; /* Line to fracture */ 411 { 412 char **argv; /* Manufactured argument vector */ 413 int argc; /* Number of arguments in argv */ 414 char *args; /* Space used by the args */ 415 char *buf, *p1; 416 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 417 size_t len; 418 419 if (line == NULL) 420 return; 421 for (; *line == ' '; ++line) 422 continue; 423 if (!*line) 424 return; 425 426 buf = emalloc(len = strlen(line) + strlen(argv0) + 2); 427 (void)snprintf(buf, len, "%s %s", argv0, line); 428 if (p1) 429 free(p1); 430 431 argv = brk_string(buf, &argc, TRUE, &args); 432 free(buf); 433 MainParseArgs(argc, argv); 434 435 free(args); 436 free(argv); 437 } 438 439 char * 440 chdir_verify_path(path, obpath) 441 char *path; 442 char *obpath; 443 { 444 struct stat sb; 445 446 if (strchr(path, '$') != 0) { 447 path = Var_Subst(NULL, path, VAR_GLOBAL, 0); 448 } 449 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 450 if (chdir(path)) { 451 (void)fprintf(stderr, "make warning: %s: %s.\n", 452 path, strerror(errno)); 453 return 0; 454 } 455 else { 456 if (path[0] != '/') { 457 (void) snprintf(obpath, MAXPATHLEN, "%s/%s", 458 curdir, path); 459 return obpath; 460 } 461 else 462 return path; 463 } 464 } 465 466 return 0; 467 } 468 469 470 /*- 471 * main -- 472 * The main function, for obvious reasons. Initializes variables 473 * and a few modules, then parses the arguments give it in the 474 * environment and on the command line. Reads the system makefile 475 * followed by either Makefile, makefile or the file given by the 476 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 477 * flags it has received by then uses either the Make or the Compat 478 * module to create the initial list of targets. 479 * 480 * Results: 481 * If -q was given, exits -1 if anything was out-of-date. Else it exits 482 * 0. 483 * 484 * Side Effects: 485 * The program exits when done. Targets are created. etc. etc. etc. 486 */ 487 int 488 main(argc, argv) 489 int argc; 490 char **argv; 491 { 492 Lst targs; /* target nodes to create -- passed to Make_Init */ 493 Boolean outOfDate = TRUE; /* FALSE if all targets up to date */ 494 struct stat sb, sa; 495 char *p, *p1, *path, *pathp, *pwd; 496 char mdpath[MAXPATHLEN + 1]; 497 char obpath[MAXPATHLEN + 1]; 498 char cdpath[MAXPATHLEN + 1]; 499 char *machine = getenv("MACHINE"); 500 char *machine_arch = getenv("MACHINE_ARCH"); 501 char *syspath = getenv("MAKESYSPATH"); 502 Lst sysMkPath; /* Path of sys.mk */ 503 char *cp = NULL, *start; 504 /* avoid faults on read-only strings */ 505 static char defsyspath[] = _PATH_DEFSYSPATH; 506 507 if ((progname = strrchr(argv[0], '/')) != NULL) 508 progname++; 509 else 510 progname = argv[0]; 511 #ifdef RLIMIT_NOFILE 512 /* 513 * get rid of resource limit on file descriptors 514 */ 515 { 516 struct rlimit rl; 517 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 518 rl.rlim_cur != rl.rlim_max) { 519 rl.rlim_cur = rl.rlim_max; 520 (void) setrlimit(RLIMIT_NOFILE, &rl); 521 } 522 } 523 #endif 524 /* 525 * Find where we are and take care of PWD for the automounter... 526 * All this code is so that we know where we are when we start up 527 * on a different machine with pmake. 528 */ 529 curdir = cdpath; 530 if (getcwd(curdir, MAXPATHLEN) == NULL) { 531 (void)fprintf(stderr, "make: %s.\n", strerror(errno)); 532 exit(2); 533 } 534 535 if (stat(curdir, &sa) == -1) { 536 (void)fprintf(stderr, "make: %s: %s.\n", 537 curdir, strerror(errno)); 538 exit(2); 539 } 540 541 /* 542 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 543 * since the value of curdir can very depending on how we got 544 * here. Ie sitting at a shell prompt (shell that provides $PWD) 545 * or via subdir.mk in which case its likely a shell which does 546 * not provide it. 547 * So, to stop it breaking this case only, we ignore PWD if 548 * MAKEOBJDIRPREFIX is set. 549 */ 550 if ((pwd = getenv("PWD")) != NULL && 551 getenv("MAKEOBJDIRPREFIX") == NULL) { 552 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 553 sa.st_dev == sb.st_dev) 554 (void) strcpy(curdir, pwd); 555 } 556 557 /* 558 * Get the name of this type of MACHINE from utsname 559 * so we can share an executable for similar machines. 560 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 561 * 562 * Note that both MACHINE and MACHINE_ARCH are decided at 563 * run-time. 564 */ 565 if (!machine) { 566 #ifndef MAKE_BOOTSTRAP 567 struct utsname utsname; 568 569 if (uname(&utsname) == -1) { 570 perror("make: uname"); 571 exit(2); 572 } 573 machine = utsname.machine; 574 #else 575 machine = MACHINE; 576 #endif 577 } 578 579 if (!machine_arch) { 580 #ifndef MACHINE_ARCH 581 #ifdef __ARCHITECTURE__ 582 machine_arch = __ARCHITECTURE__; 583 #else 584 machine_arch = "unknown"; /* XXX: no uname -p yet */ 585 #endif 586 #else 587 machine_arch = MACHINE_ARCH; 588 #endif 589 } 590 591 /* 592 * Just in case MAKEOBJDIR wants us to do something tricky. 593 */ 594 Var_Init(); /* Initialize the lists of variables for 595 * parsing arguments */ 596 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 597 Var_Set("MACHINE", machine, VAR_GLOBAL); 598 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 599 600 /* 601 * If the MAKEOBJDIR (or by default, the _PATH_OBJDIR) directory 602 * exists, change into it and build there. (If a .${MACHINE} suffix 603 * exists, use that directory instead). 604 * Otherwise check MAKEOBJDIRPREFIX`cwd` (or by default, 605 * _PATH_OBJDIRPREFIX`cwd`) and build there if it exists. 606 * If all fails, use the current directory to build. 607 * 608 * Once things are initted, 609 * have to add the original directory to the search path, 610 * and modify the paths for the Makefiles apropriately. The 611 * current directory is also placed as a variable for make scripts. 612 */ 613 if (!(pathp = getenv("MAKEOBJDIRPREFIX"))) { 614 if (!(path = getenv("MAKEOBJDIR"))) { 615 path = _PATH_OBJDIR; 616 pathp = _PATH_OBJDIRPREFIX; 617 (void) snprintf(mdpath, MAXPATHLEN, "%s.%s", 618 path, machine); 619 if (!(objdir = chdir_verify_path(mdpath, obpath))) 620 if (!(objdir=chdir_verify_path(path, obpath))) { 621 (void) snprintf(mdpath, MAXPATHLEN, 622 "%s%s", pathp, curdir); 623 if (!(objdir=chdir_verify_path(mdpath, 624 obpath))) 625 objdir = curdir; 626 } 627 } 628 else if (!(objdir = chdir_verify_path(path, obpath))) 629 objdir = curdir; 630 } 631 else { 632 (void) snprintf(mdpath, MAXPATHLEN, "%s%s", pathp, curdir); 633 if (!(objdir = chdir_verify_path(mdpath, obpath))) 634 objdir = curdir; 635 } 636 637 setenv("PWD", objdir, 1); 638 639 create = Lst_Init(FALSE); 640 makefiles = Lst_Init(FALSE); 641 printVars = FALSE; 642 variables = Lst_Init(FALSE); 643 beSilent = FALSE; /* Print commands as executed */ 644 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 645 noExecute = FALSE; /* Execute all commands */ 646 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 647 keepgoing = FALSE; /* Stop on error */ 648 allPrecious = FALSE; /* Remove targets when interrupted */ 649 queryFlag = FALSE; /* This is not just a check-run */ 650 noBuiltins = FALSE; /* Read the built-in rules */ 651 touchFlag = FALSE; /* Actually update targets */ 652 usePipes = TRUE; /* Catch child output in pipes */ 653 debug = 0; /* No debug verbosity, please. */ 654 jobsRunning = FALSE; 655 656 maxLocal = DEFMAXLOCAL; /* Set default local max concurrency */ 657 #ifdef REMOTE 658 maxJobs = DEFMAXJOBS; /* Set default max concurrency */ 659 #else 660 maxJobs = maxLocal; 661 #endif 662 compatMake = FALSE; /* No compat mode */ 663 664 665 /* 666 * Initialize the parsing, directory and variable modules to prepare 667 * for the reading of inclusion paths and variable settings on the 668 * command line 669 */ 670 671 /* 672 * Initialize directory structures so -I flags can be processed 673 * correctly, if we have a different objdir, then let the directory 674 * know our curdir. 675 */ 676 Dir_Init(curdir != objdir ? curdir : NULL); 677 Parse_Init(); /* Need to initialize the paths of #include 678 * directories */ 679 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 680 681 /* 682 * Initialize various variables. 683 * MAKE also gets this name, for compatibility 684 * .MAKEFLAGS gets set to the empty string just in case. 685 * MFLAGS also gets initialized empty, for compatibility. 686 */ 687 Var_Set("MAKE", argv[0], VAR_GLOBAL); 688 Var_Set(".MAKE", argv[0], VAR_GLOBAL); 689 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 690 Var_Set("MFLAGS", "", VAR_GLOBAL); 691 692 /* 693 * First snag any flags out of the MAKE environment variable. 694 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 695 * in a different format). 696 */ 697 #ifdef POSIX 698 Main_ParseArgLine(getenv("MAKEFLAGS")); 699 #else 700 Main_ParseArgLine(getenv("MAKE")); 701 #endif 702 703 MainParseArgs(argc, argv); 704 705 /* 706 * Be compatible if user did not specify -j and did not explicitly 707 * turned compatibility on 708 */ 709 if (!compatMake && !forceJobs) { 710 compatMake = TRUE; 711 } 712 713 /* 714 * Initialize archive, target and suffix modules in preparation for 715 * parsing the makefile(s) 716 */ 717 Arch_Init(); 718 Targ_Init(); 719 Suff_Init(); 720 Trace_Init(tracefile); 721 722 DEFAULT = NILGNODE; 723 (void)time(&now); 724 725 Trace_Log(MAKESTART, NULL); 726 727 /* 728 * Set up the .TARGETS variable to contain the list of targets to be 729 * created. If none specified, make the variable empty -- the parser 730 * will fill the thing in with the default or .MAIN target. 731 */ 732 if (!Lst_IsEmpty(create)) { 733 LstNode ln; 734 735 for (ln = Lst_First(create); ln != NILLNODE; 736 ln = Lst_Succ(ln)) { 737 char *name = (char *)Lst_Datum(ln); 738 739 Var_Append(".TARGETS", name, VAR_GLOBAL); 740 } 741 } else 742 Var_Set(".TARGETS", "", VAR_GLOBAL); 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(sysIncPath)) { 751 if (syspath == NULL || *syspath == '\0') 752 syspath = defsyspath; 753 else 754 syspath = strdup(syspath); 755 756 for (start = syspath; *start != '\0'; start = cp) { 757 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 758 continue; 759 if (*cp == '\0') { 760 (void) Dir_AddDir(sysIncPath, start); 761 } else { 762 *cp++ = '\0'; 763 (void) Dir_AddDir(sysIncPath, start); 764 } 765 } 766 if (syspath != defsyspath) 767 free(syspath); 768 } 769 770 /* 771 * Read in the built-in rules first, followed by the specified 772 * makefile, if it was (makefile != (char *) NULL), or the default 773 * Makefile and makefile, in that order, if it wasn't. 774 */ 775 if (!noBuiltins) { 776 LstNode ln; 777 778 sysMkPath = Lst_Init (FALSE); 779 Dir_Expand (_PATH_DEFSYSMK, sysIncPath, sysMkPath); 780 if (Lst_IsEmpty(sysMkPath)) 781 Fatal("make: no system rules (%s).", _PATH_DEFSYSMK); 782 ln = Lst_Find(sysMkPath, (ClientData)NULL, ReadMakefile); 783 if (ln != NILLNODE) 784 Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); 785 } 786 787 if (!Lst_IsEmpty(makefiles)) { 788 LstNode ln; 789 790 ln = Lst_Find(makefiles, (ClientData)NULL, ReadMakefile); 791 if (ln != NILLNODE) 792 Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); 793 } else if (!ReadMakefile("makefile", NULL)) 794 (void)ReadMakefile("Makefile", NULL); 795 796 (void)ReadMakefile(".depend", NULL); 797 798 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 799 if (p1) 800 free(p1); 801 802 if (!jobServer && !compatMake) 803 Job_ServerStart(maxJobs); 804 if (DEBUG(JOB)) 805 printf("job_pipe %d %d, maxjobs %d maxlocal %d compat %d\n", job_pipe[0], job_pipe[1], maxJobs, 806 maxLocal, compatMake); 807 808 /* Install all the flags into the MAKE envariable. */ 809 if (((p = Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1)) != NULL) && *p) 810 #ifdef POSIX 811 setenv("MAKEFLAGS", p, 1); 812 #else 813 setenv("MAKE", p, 1); 814 #endif 815 if (p1) 816 free(p1); 817 818 Check_Cwd_av(0, NULL, 0); /* initialize it */ 819 820 821 /* 822 * For compatibility, look at the directories in the VPATH variable 823 * and add them to the search path, if the variable is defined. The 824 * variable's value is in the same format as the PATH envariable, i.e. 825 * <directory>:<directory>:<directory>... 826 */ 827 if (Var_Exists("VPATH", VAR_CMD)) { 828 char *vpath, *path, *cp, savec; 829 /* 830 * GCC stores string constants in read-only memory, but 831 * Var_Subst will want to write this thing, so store it 832 * in an array 833 */ 834 static char VPATH[] = "${VPATH}"; 835 836 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 837 path = vpath; 838 do { 839 /* skip to end of directory */ 840 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 841 continue; 842 /* Save terminator character so know when to stop */ 843 savec = *cp; 844 *cp = '\0'; 845 /* Add directory to search path */ 846 (void) Dir_AddDir(dirSearchPath, path); 847 *cp = savec; 848 path = cp + 1; 849 } while (savec == ':'); 850 (void)free((Address)vpath); 851 } 852 853 /* 854 * Now that all search paths have been read for suffixes et al, it's 855 * time to add the default search path to their lists... 856 */ 857 Suff_DoPaths(); 858 859 /* 860 * Propagate attributes through :: dependency lists. 861 */ 862 Targ_Propagate(); 863 864 /* print the initial graph, if the user requested it */ 865 if (DEBUG(GRAPH1)) 866 Targ_PrintGraph(1); 867 868 /* print the values of any variables requested by the user */ 869 if (printVars) { 870 LstNode ln; 871 872 for (ln = Lst_First(variables); ln != NILLNODE; 873 ln = Lst_Succ(ln)) { 874 char *value = Var_Value((char *)Lst_Datum(ln), 875 VAR_GLOBAL, &p1); 876 877 printf("%s\n", value ? value : ""); 878 if (p1) 879 free(p1); 880 } 881 } 882 883 /* 884 * Have now read the entire graph and need to make a list of targets 885 * to create. If none was given on the command line, we consult the 886 * parsing module to find the main target(s) to create. 887 */ 888 if (Lst_IsEmpty(create)) 889 targs = Parse_MainName(); 890 else 891 targs = Targ_FindList(create, TARG_CREATE); 892 893 if (!compatMake && !printVars) { 894 /* 895 * Initialize job module before traversing the graph, now that 896 * any .BEGIN and .END targets have been read. This is done 897 * only if the -q flag wasn't given (to prevent the .BEGIN from 898 * being executed should it exist). 899 */ 900 if (!queryFlag) { 901 if (maxLocal == -1) 902 maxLocal = maxJobs; 903 Job_Init(maxJobs, maxLocal); 904 jobsRunning = TRUE; 905 } 906 907 /* Traverse the graph, checking on all the targets */ 908 outOfDate = Make_Run(targs); 909 } else if (!printVars) { 910 /* 911 * Compat_Init will take care of creating all the targets as 912 * well as initializing the module. 913 */ 914 Compat_Run(targs); 915 } 916 917 #ifdef CLEANUP 918 Lst_Destroy(targs, NOFREE); 919 Lst_Destroy(variables, NOFREE); 920 Lst_Destroy(makefiles, NOFREE); 921 Lst_Destroy(create, (void (*) __P((ClientData))) free); 922 #endif 923 924 /* print the graph now it's been processed if the user requested it */ 925 if (DEBUG(GRAPH2)) 926 Targ_PrintGraph(2); 927 928 Trace_Log(MAKEEND, 0); 929 930 Suff_End(); 931 Targ_End(); 932 Arch_End(); 933 Var_End(); 934 Parse_End(); 935 Dir_End(); 936 Job_End(); 937 Trace_End(); 938 939 if (queryFlag && outOfDate) 940 return(1); 941 else 942 return(0); 943 } 944 945 /*- 946 * ReadMakefile -- 947 * Open and parse the given makefile. 948 * 949 * Results: 950 * TRUE if ok. FALSE if couldn't open file. 951 * 952 * Side Effects: 953 * lots 954 */ 955 static Boolean 956 ReadMakefile(p, q) 957 ClientData p, q; 958 { 959 char *fname = p; /* makefile to read */ 960 extern Lst parseIncPath; 961 FILE *stream; 962 size_t len = MAXPATHLEN; 963 char *name, *path = emalloc(len); 964 965 if (!strcmp(fname, "-")) { 966 Parse_File("(stdin)", stdin); 967 Var_Set("MAKEFILE", "", VAR_GLOBAL); 968 } else { 969 /* if we've chdir'd, rebuild the path name */ 970 if (curdir != objdir && *fname != '/') { 971 size_t plen = strlen(curdir) + strlen(fname) + 2; 972 if (len < plen) 973 path = erealloc(path, len = 2 * plen); 974 975 (void)snprintf(path, len, "%s/%s", curdir, fname); 976 if ((stream = fopen(path, "r")) != NULL) { 977 fname = path; 978 goto found; 979 } 980 } else if ((stream = fopen(fname, "r")) != NULL) 981 goto found; 982 /* look in -I and system include directories. */ 983 name = Dir_FindFile(fname, parseIncPath); 984 if (!name) 985 name = Dir_FindFile(fname, sysIncPath); 986 if (!name || !(stream = fopen(name, "r"))) { 987 free(path); 988 return(FALSE); 989 } 990 fname = name; 991 /* 992 * set the MAKEFILE variable desired by System V fans -- the 993 * placement of the setting here means it gets set to the last 994 * makefile specified, as it is set by SysV make. 995 */ 996 found: Var_Set("MAKEFILE", fname, VAR_GLOBAL); 997 Parse_File(fname, stream); 998 (void)fclose(stream); 999 } 1000 free(path); 1001 return(TRUE); 1002 } 1003 1004 1005 /* 1006 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1007 * in situations that would not arrise with ./obj (links or not). 1008 * This tends to break things like: 1009 * 1010 * build: 1011 * ${MAKE} includes 1012 * 1013 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1014 * opposed to an argument) in a command line and if so returns 1015 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1016 * the Makefile hold true. 1017 * 1018 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1019 * 1020 * The chdir() only happens in the child process, and does nothing if 1021 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1022 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1023 * do nothing - to ensure historic semantics can be retained. 1024 */ 1025 static int Check_Cwd_Off = 0; 1026 1027 static char * 1028 Check_Cwd_av(ac, av, copy) 1029 int ac; 1030 char **av; 1031 int copy; 1032 { 1033 static char *make[4]; 1034 static char *curdir = NULL; 1035 char *cp, **mp; 1036 int is_cmd, next_cmd; 1037 int i; 1038 int n; 1039 1040 if (Check_Cwd_Off) 1041 return NULL; 1042 1043 if (make[0] == NULL) { 1044 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1045 Check_Cwd_Off = 1; 1046 return NULL; 1047 } 1048 1049 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1050 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1051 make[0] = make[1]; 1052 make[1] = NULL; 1053 } else 1054 ++make[0]; 1055 make[2] = NULL; 1056 curdir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1057 } 1058 if (ac == 0 || av == NULL) 1059 return NULL; /* initialization only */ 1060 1061 if (getenv("MAKEOBJDIR") == NULL && 1062 getenv("MAKEOBJDIRPREFIX") == NULL) 1063 return NULL; 1064 1065 1066 next_cmd = 1; 1067 for (i = 0; i < ac; ++i) { 1068 is_cmd = next_cmd; 1069 1070 n = strlen(av[i]); 1071 cp = &(av[i])[n - 1]; 1072 if (strspn(av[i], "|&;") == n) { 1073 next_cmd = 1; 1074 continue; 1075 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1076 next_cmd = 1; 1077 if (copy) { 1078 do { 1079 *cp-- = '\0'; 1080 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1081 *cp == ')' || *cp == '}') ; 1082 } else { 1083 /* 1084 * XXX this should not happen. 1085 */ 1086 fprintf(stderr, "WARNING: raw arg ends in shell meta '%s'\n", 1087 av[i]); 1088 } 1089 } else 1090 next_cmd = 0; 1091 1092 cp = av[i]; 1093 if (*cp == ';' || *cp == '&' || *cp == '|') 1094 is_cmd = 1; 1095 1096 #ifdef check_cwd_debug 1097 fprintf(stderr, "av[%d] == %s '%s'", 1098 i, (is_cmd) ? "cmd" : "arg", av[i]); 1099 #endif 1100 if (is_cmd != 0) { 1101 if (*cp == '(' || *cp == '{' || 1102 *cp == ';' || *cp == '&' || *cp == '|') { 1103 do { 1104 ++cp; 1105 } while (*cp == '(' || *cp == '{' || 1106 *cp == ';' || *cp == '&' || *cp == '|'); 1107 if (*cp == '\0') { 1108 next_cmd = 1; 1109 continue; 1110 } 1111 } 1112 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1113 #ifdef check_cwd_debug 1114 fprintf(stderr, " == cd, done.\n"); 1115 #endif 1116 return NULL; 1117 } 1118 for (mp = make; *mp != NULL; ++mp) { 1119 n = strlen(*mp); 1120 if (strcmp(cp, *mp) == 0) { 1121 #ifdef check_cwd_debug 1122 fprintf(stderr, " %s == '%s', chdir(%s)\n", 1123 cp, *mp, curdir); 1124 #endif 1125 return curdir; 1126 } 1127 } 1128 } 1129 #ifdef check_cwd_debug 1130 fprintf(stderr, "\n"); 1131 #endif 1132 } 1133 return NULL; 1134 } 1135 1136 char * 1137 Check_Cwd_Cmd(cmd) 1138 char *cmd; 1139 { 1140 char *cp, *bp, **av; 1141 int ac; 1142 1143 if (Check_Cwd_Off) 1144 return NULL; 1145 1146 if (cmd) { 1147 av = brk_string(cmd, &ac, TRUE, &bp); 1148 #ifdef check_cwd_debug 1149 fprintf(stderr, "splitting: '%s' -> %d words\n", 1150 cmd, ac); 1151 #endif 1152 } else { 1153 ac = 0; 1154 av = NULL; 1155 bp = NULL; 1156 } 1157 cp = Check_Cwd_av(ac, av, 1); 1158 if (bp) { 1159 free(av); 1160 free(bp); 1161 } 1162 return cp; 1163 } 1164 1165 void 1166 Check_Cwd(argv) 1167 char **argv; 1168 { 1169 char *cp; 1170 int ac; 1171 1172 if (Check_Cwd_Off) 1173 return; 1174 1175 for (ac = 0; argv[ac] != NULL; ++ac) 1176 /* NOTHING */; 1177 if (ac == 3 && *argv[1] == '-') { 1178 cp = Check_Cwd_Cmd(argv[2]); 1179 } else { 1180 cp = Check_Cwd_av(ac, argv, 0); 1181 } 1182 if (cp) { 1183 chdir(cp); 1184 } 1185 } 1186 1187 /*- 1188 * Cmd_Exec -- 1189 * Execute the command in cmd, and return the output of that command 1190 * in a string. 1191 * 1192 * Results: 1193 * A string containing the output of the command, or the empty string 1194 * If err is not NULL, it contains the reason for the command failure 1195 * 1196 * Side Effects: 1197 * The string must be freed by the caller. 1198 */ 1199 char * 1200 Cmd_Exec(cmd, err) 1201 char *cmd; 1202 char **err; 1203 { 1204 char *args[4]; /* Args for invoking the shell */ 1205 int fds[2]; /* Pipe streams */ 1206 int cpid; /* Child PID */ 1207 int pid; /* PID from wait() */ 1208 char *res; /* result */ 1209 int status; /* command exit status */ 1210 Buffer buf; /* buffer to store the result */ 1211 char *cp; 1212 int cc; 1213 1214 1215 *err = NULL; 1216 1217 /* 1218 * Set up arguments for shell 1219 */ 1220 args[0] = "sh"; 1221 args[1] = "-c"; 1222 args[2] = cmd; 1223 args[3] = NULL; 1224 1225 /* 1226 * Open a pipe for fetching its output 1227 */ 1228 if (pipe(fds) == -1) { 1229 *err = "Couldn't create pipe for \"%s\""; 1230 goto bad; 1231 } 1232 1233 /* 1234 * Fork 1235 */ 1236 switch (cpid = vfork()) { 1237 case 0: 1238 /* 1239 * Close input side of pipe 1240 */ 1241 (void) close(fds[0]); 1242 1243 /* 1244 * Duplicate the output stream to the shell's output, then 1245 * shut the extra thing down. Note we don't fetch the error 1246 * stream...why not? Why? 1247 */ 1248 (void) dup2(fds[1], 1); 1249 (void) close(fds[1]); 1250 1251 (void) execv("/bin/sh", args); 1252 _exit(1); 1253 /*NOTREACHED*/ 1254 1255 case -1: 1256 *err = "Couldn't exec \"%s\""; 1257 goto bad; 1258 1259 default: 1260 /* 1261 * No need for the writing half 1262 */ 1263 (void) close(fds[1]); 1264 1265 buf = Buf_Init (MAKE_BSIZE); 1266 1267 do { 1268 char result[BUFSIZ]; 1269 cc = read(fds[0], result, sizeof(result)); 1270 if (cc > 0) 1271 Buf_AddBytes(buf, cc, (Byte *) result); 1272 } 1273 while (cc > 0 || (cc == -1 && errno == EINTR)); 1274 1275 /* 1276 * Close the input side of the pipe. 1277 */ 1278 (void) close(fds[0]); 1279 1280 /* 1281 * Wait for the process to exit. 1282 */ 1283 while(((pid = wait(&status)) != cpid) && (pid >= 0)) 1284 continue; 1285 1286 res = (char *)Buf_GetAll (buf, &cc); 1287 Buf_Destroy (buf, FALSE); 1288 1289 if (cc == 0) 1290 *err = "Couldn't read shell's output for \"%s\""; 1291 1292 if (status) 1293 *err = "\"%s\" returned non-zero status"; 1294 1295 /* 1296 * Null-terminate the result, convert newlines to spaces and 1297 * install it in the variable. 1298 */ 1299 res[cc] = '\0'; 1300 cp = &res[cc]; 1301 1302 if (cc > 0 && *--cp == '\n') { 1303 /* 1304 * A final newline is just stripped 1305 */ 1306 *cp-- = '\0'; 1307 } 1308 while (cp >= res) { 1309 if (*cp == '\n') { 1310 *cp = ' '; 1311 } 1312 cp--; 1313 } 1314 break; 1315 } 1316 return res; 1317 bad: 1318 res = emalloc(1); 1319 *res = '\0'; 1320 return res; 1321 } 1322 1323 /*- 1324 * Error -- 1325 * Print an error message given its format. 1326 * 1327 * Results: 1328 * None. 1329 * 1330 * Side Effects: 1331 * The message is printed. 1332 */ 1333 /* VARARGS */ 1334 void 1335 #ifdef __STDC__ 1336 Error(char *fmt, ...) 1337 #else 1338 Error(va_alist) 1339 va_dcl 1340 #endif 1341 { 1342 va_list ap; 1343 #ifdef __STDC__ 1344 va_start(ap, fmt); 1345 #else 1346 char *fmt; 1347 1348 va_start(ap); 1349 fmt = va_arg(ap, char *); 1350 #endif 1351 fprintf(stderr, "%s: ", progname); 1352 (void)vfprintf(stderr, fmt, ap); 1353 va_end(ap); 1354 (void)fprintf(stderr, "\n"); 1355 (void)fflush(stderr); 1356 } 1357 1358 /*- 1359 * Fatal -- 1360 * Produce a Fatal error message. If jobs are running, waits for them 1361 * to finish. 1362 * 1363 * Results: 1364 * None 1365 * 1366 * Side Effects: 1367 * The program exits 1368 */ 1369 /* VARARGS */ 1370 void 1371 #ifdef __STDC__ 1372 Fatal(char *fmt, ...) 1373 #else 1374 Fatal(va_alist) 1375 va_dcl 1376 #endif 1377 { 1378 va_list ap; 1379 #ifdef __STDC__ 1380 va_start(ap, fmt); 1381 #else 1382 char *fmt; 1383 1384 va_start(ap); 1385 fmt = va_arg(ap, char *); 1386 #endif 1387 if (jobsRunning) 1388 Job_Wait(); 1389 Job_TokenFlush(); 1390 1391 (void)vfprintf(stderr, fmt, ap); 1392 va_end(ap); 1393 (void)fprintf(stderr, "\n"); 1394 (void)fflush(stderr); 1395 1396 if (DEBUG(GRAPH2)) 1397 Targ_PrintGraph(2); 1398 Trace_Log(MAKEERROR, 0); 1399 exit(2); /* Not 1 so -q can distinguish error */ 1400 } 1401 1402 /* 1403 * Punt -- 1404 * Major exception once jobs are being created. Kills all jobs, prints 1405 * a message and exits. 1406 * 1407 * Results: 1408 * None 1409 * 1410 * Side Effects: 1411 * All children are killed indiscriminately and the program Lib_Exits 1412 */ 1413 /* VARARGS */ 1414 void 1415 #ifdef __STDC__ 1416 Punt(char *fmt, ...) 1417 #else 1418 Punt(va_alist) 1419 va_dcl 1420 #endif 1421 { 1422 va_list ap; 1423 #ifdef __STDC__ 1424 va_start(ap, fmt); 1425 #else 1426 char *fmt; 1427 1428 va_start(ap); 1429 fmt = va_arg(ap, char *); 1430 #endif 1431 1432 (void)fprintf(stderr, "make: "); 1433 (void)vfprintf(stderr, fmt, ap); 1434 va_end(ap); 1435 (void)fprintf(stderr, "\n"); 1436 (void)fflush(stderr); 1437 1438 DieHorribly(); 1439 } 1440 1441 /*- 1442 * DieHorribly -- 1443 * Exit without giving a message. 1444 * 1445 * Results: 1446 * None 1447 * 1448 * Side Effects: 1449 * A big one... 1450 */ 1451 void 1452 DieHorribly() 1453 { 1454 if (jobsRunning) 1455 Job_AbortAll(); 1456 if (DEBUG(GRAPH2)) 1457 Targ_PrintGraph(2); 1458 Trace_Log(MAKEERROR, 0); 1459 exit(2); /* Not 1, so -q can distinguish error */ 1460 } 1461 1462 /* 1463 * Finish -- 1464 * Called when aborting due to errors in child shell to signal 1465 * abnormal exit. 1466 * 1467 * Results: 1468 * None 1469 * 1470 * Side Effects: 1471 * The program exits 1472 */ 1473 void 1474 Finish(errors) 1475 int errors; /* number of errors encountered in Make_Make */ 1476 { 1477 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1478 } 1479 1480 /* 1481 * emalloc -- 1482 * malloc, but die on error. 1483 */ 1484 void * 1485 emalloc(len) 1486 size_t len; 1487 { 1488 void *p; 1489 1490 if ((p = malloc(len)) == NULL) 1491 enomem(); 1492 return(p); 1493 } 1494 1495 /* 1496 * estrdup -- 1497 * strdup, but die on error. 1498 */ 1499 char * 1500 estrdup(str) 1501 const char *str; 1502 { 1503 char *p; 1504 1505 if ((p = strdup(str)) == NULL) 1506 enomem(); 1507 return(p); 1508 } 1509 1510 /* 1511 * erealloc -- 1512 * realloc, but die on error. 1513 */ 1514 void * 1515 erealloc(ptr, size) 1516 void *ptr; 1517 size_t size; 1518 { 1519 if ((ptr = realloc(ptr, size)) == NULL) 1520 enomem(); 1521 return(ptr); 1522 } 1523 1524 /* 1525 * enomem -- 1526 * die when out of memory. 1527 */ 1528 void 1529 enomem() 1530 { 1531 (void)fprintf(stderr, "make: %s.\n", strerror(errno)); 1532 exit(2); 1533 } 1534 1535 /* 1536 * enunlink -- 1537 * Remove a file carefully, avoiding directories. 1538 */ 1539 int 1540 eunlink(file) 1541 const char *file; 1542 { 1543 struct stat st; 1544 1545 if (lstat(file, &st) == -1) 1546 return -1; 1547 1548 if (S_ISDIR(st.st_mode)) { 1549 errno = EISDIR; 1550 return -1; 1551 } 1552 return unlink(file); 1553 } 1554 1555 /* 1556 * usage -- 1557 * exit with usage message 1558 */ 1559 static void 1560 usage() 1561 { 1562 (void)fprintf(stderr, 1563 "usage: make [-Beiknqrst] [-D variable] [-d flags] [-f makefile ]\n\ 1564 [-I directory] [-j max_jobs] [-m directory] [-V variable]\n\ 1565 [variable=value] [target ...]\n"); 1566 exit(2); 1567 } 1568 1569 1570 int 1571 PrintAddr(a, b) 1572 ClientData a; 1573 ClientData b; 1574 { 1575 printf("%lx ", (unsigned long) a); 1576 return b ? 0 : 0; 1577 } 1578
Indexes created Tue Sep 23 14:10:03 GMT 2025