main.c revision 1.75
1 /* $NetBSD: main.c,v 1.75 2001/11/02 03:52:21 tv 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 1.75 2001/11/02 03:52:21 tv 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 1.75 2001/11/02 03:52:21 tv 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 occurred, 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 #ifdef USE_IOVEC 114 #include <sys/uio.h> 115 #endif 116 117 #ifndef DEFMAXLOCAL 118 #define DEFMAXLOCAL DEFMAXJOBS 119 #endif /* DEFMAXLOCAL */ 120 121 Lst create; /* Targets to be made */ 122 time_t now; /* Time at start of make */ 123 GNode *DEFAULT; /* .DEFAULT node */ 124 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 125 126 static Boolean noBuiltins; /* -r flag */ 127 static Lst makefiles; /* ordered list of makefiles to read */ 128 static Boolean printVars; /* print value of one or more vars */ 129 static Lst variables; /* list of variables to print */ 130 int maxJobs; /* -j argument */ 131 static int maxLocal; /* -L argument */ 132 Boolean compatMake; /* -B argument */ 133 Boolean debug; /* -d flag */ 134 Boolean noExecute; /* -n flag */ 135 Boolean noRecursiveExecute; /* -N flag */ 136 Boolean keepgoing; /* -k flag */ 137 Boolean queryFlag; /* -q flag */ 138 Boolean touchFlag; /* -t flag */ 139 Boolean usePipes; /* !-P flag */ 140 Boolean ignoreErrors; /* -i flag */ 141 Boolean beSilent; /* -s flag */ 142 Boolean oldVars; /* variable substitution style */ 143 Boolean checkEnvFirst; /* -e flag */ 144 Boolean parseWarnFatal; /* -W flag */ 145 Boolean jobServer; /* -J flag */ 146 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 147 static const char * tracefile; 148 static char * Check_Cwd_av __P((int, char **, int)); 149 static void MainParseArgs __P((int, char **)); 150 static int ReadMakefile __P((ClientData, ClientData)); 151 static void usage __P((void)); 152 153 static char curdir[MAXPATHLEN + 1]; /* startup directory */ 154 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 155 char *progname; /* the program name */ 156 157 Boolean forceJobs = FALSE; 158 159 extern Lst parseIncPath; 160 161 /*- 162 * MainParseArgs -- 163 * Parse a given argument vector. Called from main() and from 164 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 165 * 166 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 167 * 168 * Results: 169 * None 170 * 171 * Side Effects: 172 * Various global and local flags will be set depending on the flags 173 * given 174 */ 175 static void 176 MainParseArgs(argc, argv) 177 int argc; 178 char **argv; 179 { 180 char *p; 181 int c; 182 183 optind = 1; /* since we're called more than once */ 184 #ifdef REMOTE 185 # define OPTFLAGS "BD:I:J:L:NPST:V:Wd:ef:ij:km:nqrst" 186 #else 187 # define OPTFLAGS "BD:I:J:NPST:V:Wd:ef:ij:km:nqrst" 188 #endif 189 rearg: while((c = getopt(argc, argv, OPTFLAGS)) != -1) { 190 switch(c) { 191 case 'D': 192 Var_Set(optarg, "1", VAR_GLOBAL, 0); 193 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 194 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 195 break; 196 case 'I': 197 Parse_AddIncludeDir(optarg); 198 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 199 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 200 break; 201 case 'J': 202 if (sscanf(optarg, "%d,%d", &job_pipe[0], &job_pipe[1]) != 2) { 203 /* backslash to avoid trigraph ??) */ 204 (void)fprintf(stderr, 205 "%s: internal error -- J option malformed (%s?\?)\n", 206 progname, optarg); 207 usage(); 208 } 209 if ((fcntl(job_pipe[0], F_GETFD, 0) < 0) || 210 (fcntl(job_pipe[1], F_GETFD, 0) < 0)) { 211 #if 0 212 (void)fprintf(stderr, 213 "%s: warning -- J descriptors were closed!\n", 214 progname); 215 #endif 216 job_pipe[0] = -1; 217 job_pipe[1] = -1; 218 compatMake = TRUE; 219 } else { 220 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 221 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 222 jobServer = TRUE; 223 } 224 break; 225 case 'V': 226 printVars = TRUE; 227 (void)Lst_AtEnd(variables, (ClientData)optarg); 228 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 229 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 230 break; 231 case 'B': 232 compatMake = TRUE; 233 break; 234 #ifdef REMOTE 235 case 'L': 236 maxLocal = strtol(optarg, &p, 0); 237 if (*p != '\0' || maxLocal < 1) { 238 (void) fprintf(stderr, "%s: illegal argument to -L -- must be positive integer!\n", 239 progname); 240 exit(1); 241 } 242 Var_Append(MAKEFLAGS, "-L", VAR_GLOBAL); 243 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 244 break; 245 #endif 246 case 'N': 247 noExecute = TRUE; 248 noRecursiveExecute = TRUE; 249 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 250 break; 251 case 'P': 252 usePipes = FALSE; 253 Var_Append(MAKEFLAGS, "-P", VAR_GLOBAL); 254 break; 255 case 'S': 256 keepgoing = FALSE; 257 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 258 break; 259 case 'T': 260 tracefile = estrdup(optarg); 261 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 262 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 263 break; 264 case 'W': 265 parseWarnFatal = TRUE; 266 break; 267 case 'd': { 268 char *modules = optarg; 269 270 for (; *modules; ++modules) 271 switch (*modules) { 272 case 'A': 273 debug = ~0; 274 break; 275 case 'a': 276 debug |= DEBUG_ARCH; 277 break; 278 case 'c': 279 debug |= DEBUG_COND; 280 break; 281 case 'd': 282 debug |= DEBUG_DIR; 283 break; 284 case 'f': 285 debug |= DEBUG_FOR; 286 break; 287 case 'g': 288 if (modules[1] == '1') { 289 debug |= DEBUG_GRAPH1; 290 ++modules; 291 } 292 else if (modules[1] == '2') { 293 debug |= DEBUG_GRAPH2; 294 ++modules; 295 } 296 break; 297 case 'j': 298 debug |= DEBUG_JOB; 299 break; 300 case 'm': 301 debug |= DEBUG_MAKE; 302 break; 303 case 's': 304 debug |= DEBUG_SUFF; 305 break; 306 case 't': 307 debug |= DEBUG_TARG; 308 break; 309 case 'v': 310 debug |= DEBUG_VAR; 311 break; 312 case 'x': 313 debug |= DEBUG_SHELL; 314 break; 315 default: 316 (void)fprintf(stderr, 317 "%s: illegal argument to d option -- %c\n", 318 progname, *modules); 319 usage(); 320 } 321 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 322 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 323 break; 324 } 325 case 'e': 326 checkEnvFirst = TRUE; 327 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 328 break; 329 case 'f': 330 (void)Lst_AtEnd(makefiles, (ClientData)optarg); 331 break; 332 case 'i': 333 ignoreErrors = TRUE; 334 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 335 break; 336 case 'j': 337 forceJobs = TRUE; 338 maxJobs = strtol(optarg, &p, 0); 339 if (*p != '\0' || maxJobs < 1) { 340 (void) fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 341 progname); 342 exit(1); 343 } 344 #ifndef REMOTE 345 maxLocal = maxJobs; 346 #endif 347 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 348 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 349 break; 350 case 'k': 351 keepgoing = TRUE; 352 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 353 break; 354 case 'm': 355 (void) Dir_AddDir(sysIncPath, optarg); 356 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 357 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 358 break; 359 case 'n': 360 noExecute = TRUE; 361 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 362 break; 363 case 'q': 364 queryFlag = TRUE; 365 /* Kind of nonsensical, wot? */ 366 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 367 break; 368 case 'r': 369 noBuiltins = TRUE; 370 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 371 break; 372 case 's': 373 beSilent = TRUE; 374 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 375 break; 376 case 't': 377 touchFlag = TRUE; 378 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 379 break; 380 default: 381 case '?': 382 usage(); 383 } 384 } 385 386 oldVars = TRUE; 387 388 /* 389 * See if the rest of the arguments are variable assignments and 390 * perform them if so. Else take them to be targets and stuff them 391 * on the end of the "create" list. 392 */ 393 for (argv += optind, argc -= optind; *argv; ++argv, --argc) 394 if (Parse_IsVar(*argv)) { 395 Parse_DoVar(*argv, VAR_CMD); 396 } else { 397 if (!**argv) 398 Punt("illegal (null) argument."); 399 if (**argv == '-') { 400 if ((*argv)[1]) 401 optind = 0; /* -flag... */ 402 else 403 optind = 1; /* - */ 404 goto rearg; 405 } 406 (void)Lst_AtEnd(create, (ClientData)estrdup(*argv)); 407 } 408 } 409 410 /*- 411 * Main_ParseArgLine -- 412 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 413 * is encountered and by main() when reading the .MAKEFLAGS envariable. 414 * Takes a line of arguments and breaks it into its 415 * component words and passes those words and the number of them to the 416 * MainParseArgs function. 417 * The line should have all its leading whitespace removed. 418 * 419 * Results: 420 * None 421 * 422 * Side Effects: 423 * Only those that come from the various arguments. 424 */ 425 void 426 Main_ParseArgLine(line) 427 char *line; /* Line to fracture */ 428 { 429 char **argv; /* Manufactured argument vector */ 430 int argc; /* Number of arguments in argv */ 431 char *args; /* Space used by the args */ 432 char *buf, *p1; 433 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 434 size_t len; 435 436 if (line == NULL) 437 return; 438 for (; *line == ' '; ++line) 439 continue; 440 if (!*line) 441 return; 442 443 buf = emalloc(len = strlen(line) + strlen(argv0) + 2); 444 (void)snprintf(buf, len, "%s %s", argv0, line); 445 if (p1) 446 free(p1); 447 448 argv = brk_string(buf, &argc, TRUE, &args); 449 free(buf); 450 MainParseArgs(argc, argv); 451 452 free(args); 453 free(argv); 454 } 455 456 Boolean 457 Main_SetObjdir(path) 458 const char *path; 459 { 460 struct stat sb; 461 char *p = NULL; 462 char buf[MAXPATHLEN + 1]; 463 Boolean rc = TRUE; 464 465 /* expand variable substitutions */ 466 if (strchr(path, '$') != 0) { 467 snprintf(buf, MAXPATHLEN, "%s", path); 468 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 469 } 470 471 if (path[0] != '/') { 472 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 473 path = buf; 474 } 475 476 /* look for the directory and try to chdir there */ 477 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 478 if (chdir(path)) { 479 (void)fprintf(stderr, "make warning: %s: %s.\n", 480 path, strerror(errno)); 481 } else { 482 strncpy(objdir, path, MAXPATHLEN); 483 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 484 setenv("PWD", objdir, 1); 485 rc = TRUE; 486 } 487 } 488 489 if (p) 490 free(p); 491 return rc; 492 } 493 494 495 /*- 496 * main -- 497 * The main function, for obvious reasons. Initializes variables 498 * and a few modules, then parses the arguments give it in the 499 * environment and on the command line. Reads the system makefile 500 * followed by either Makefile, makefile or the file given by the 501 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 502 * flags it has received by then uses either the Make or the Compat 503 * module to create the initial list of targets. 504 * 505 * Results: 506 * If -q was given, exits -1 if anything was out-of-date. Else it exits 507 * 0. 508 * 509 * Side Effects: 510 * The program exits when done. Targets are created. etc. etc. etc. 511 */ 512 int 513 main(argc, argv) 514 int argc; 515 char **argv; 516 { 517 Lst targs; /* target nodes to create -- passed to Make_Init */ 518 Boolean outOfDate = TRUE; /* FALSE if all targets up to date */ 519 struct stat sb; 520 char *p1, *path; 521 char mdpath[MAXPATHLEN]; 522 char *machine = getenv("MACHINE"); 523 char *machine_arch = getenv("MACHINE_ARCH"); 524 char *syspath = getenv("MAKESYSPATH"); 525 Lst sysMkPath; /* Path of sys.mk */ 526 char *cp = NULL, *start; 527 /* avoid faults on read-only strings */ 528 static char defsyspath[] = _PATH_DEFSYSPATH; 529 530 if ((progname = strrchr(argv[0], '/')) != NULL) 531 progname++; 532 else 533 progname = argv[0]; 534 #ifdef RLIMIT_NOFILE 535 /* 536 * get rid of resource limit on file descriptors 537 */ 538 { 539 struct rlimit rl; 540 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 541 rl.rlim_cur != rl.rlim_max) { 542 rl.rlim_cur = rl.rlim_max; 543 (void) setrlimit(RLIMIT_NOFILE, &rl); 544 } 545 } 546 #endif 547 /* 548 * Find where we are and take care of PWD for the automounter... 549 * All this code is so that we know where we are when we start up 550 * on a different machine with pmake. 551 */ 552 if (getcwd(curdir, MAXPATHLEN) == NULL) { 553 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 554 exit(2); 555 } 556 557 if (stat(curdir, &sb) == -1) { 558 (void)fprintf(stderr, "%s: %s: %s.\n", 559 progname, curdir, strerror(errno)); 560 exit(2); 561 } 562 563 /* 564 * Get the name of this type of MACHINE from utsname 565 * so we can share an executable for similar machines. 566 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 567 * 568 * Note that both MACHINE and MACHINE_ARCH are decided at 569 * run-time. 570 */ 571 if (!machine) { 572 #ifndef MAKE_BOOTSTRAP 573 struct utsname utsname; 574 575 if (uname(&utsname) == -1) { 576 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 577 strerror(errno)); 578 exit(2); 579 } 580 machine = utsname.machine; 581 #else 582 machine = MACHINE; 583 #endif 584 } 585 586 if (!machine_arch) { 587 #ifndef MACHINE_ARCH 588 #ifdef __ARCHITECTURE__ 589 machine_arch = __ARCHITECTURE__; 590 #else 591 machine_arch = "unknown"; /* XXX: no uname -p yet */ 592 #endif 593 #else 594 machine_arch = MACHINE_ARCH; 595 #endif 596 } 597 598 /* 599 * Just in case MAKEOBJDIR wants us to do something tricky. 600 */ 601 Var_Init(); /* Initialize the lists of variables for 602 * parsing arguments */ 603 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 604 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 605 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 606 #ifdef MAKE_VERSION 607 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 608 #endif 609 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 610 611 /* 612 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 613 * MAKEOBJDIR is set in the environment, try only that value 614 * and fall back to .CURDIR if it does not exist. 615 * 616 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 617 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 618 * of these paths exist, just use .CURDIR. 619 */ 620 (void) Main_SetObjdir(curdir); 621 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 622 (void) snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 623 (void) Main_SetObjdir(mdpath); 624 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 625 (void) Main_SetObjdir(path); 626 } else { 627 (void) snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 628 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 629 (void) snprintf(mdpath, MAXPATHLEN, "%s%s", 630 _PATH_OBJDIRPREFIX, curdir); 631 (void) Main_SetObjdir(mdpath); 632 } 633 } 634 635 create = Lst_Init(FALSE); 636 makefiles = Lst_Init(FALSE); 637 printVars = FALSE; 638 variables = Lst_Init(FALSE); 639 beSilent = FALSE; /* Print commands as executed */ 640 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 641 noExecute = FALSE; /* Execute all commands */ 642 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 643 keepgoing = FALSE; /* Stop on error */ 644 allPrecious = FALSE; /* Remove targets when interrupted */ 645 queryFlag = FALSE; /* This is not just a check-run */ 646 noBuiltins = FALSE; /* Read the built-in rules */ 647 touchFlag = FALSE; /* Actually update targets */ 648 usePipes = TRUE; /* Catch child output in pipes */ 649 debug = 0; /* No debug verbosity, please. */ 650 jobsRunning = FALSE; 651 652 maxLocal = DEFMAXLOCAL; /* Set default local max concurrency */ 653 #ifdef REMOTE 654 maxJobs = DEFMAXJOBS; /* Set default max concurrency */ 655 #else 656 maxJobs = maxLocal; 657 #endif 658 compatMake = FALSE; /* No compat mode */ 659 660 661 /* 662 * Initialize the parsing, directory and variable modules to prepare 663 * for the reading of inclusion paths and variable settings on the 664 * command line 665 */ 666 667 /* 668 * Initialize directory structures so -I flags can be processed 669 * correctly. 670 */ 671 Dir_Init(curdir); 672 Parse_Init(); /* Need to initialize the paths of #include 673 * directories */ 674 675 /* 676 * Initialize various variables. 677 * MAKE also gets this name, for compatibility 678 * .MAKEFLAGS gets set to the empty string just in case. 679 * MFLAGS also gets initialized empty, for compatibility. 680 */ 681 Var_Set("MAKE", argv[0], VAR_GLOBAL, 0); 682 Var_Set(".MAKE", argv[0], VAR_GLOBAL, 0); 683 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 684 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 685 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 686 687 /* 688 * First snag any flags out of the MAKE environment variable. 689 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 690 * in a different format). 691 */ 692 #ifdef POSIX 693 Main_ParseArgLine(getenv("MAKEFLAGS")); 694 #else 695 Main_ParseArgLine(getenv("MAKE")); 696 #endif 697 698 MainParseArgs(argc, argv); 699 700 /* 701 * Be compatible if user did not specify -j and did not explicitly 702 * turned compatibility on 703 */ 704 if (!compatMake && !forceJobs) { 705 compatMake = TRUE; 706 } 707 708 /* 709 * Initialize archive, target and suffix modules in preparation for 710 * parsing the makefile(s) 711 */ 712 Arch_Init(); 713 Targ_Init(); 714 Suff_Init(); 715 Trace_Init(tracefile); 716 717 DEFAULT = NILGNODE; 718 (void)time(&now); 719 720 Trace_Log(MAKESTART, NULL); 721 722 /* 723 * Set up the .TARGETS variable to contain the list of targets to be 724 * created. If none specified, make the variable empty -- the parser 725 * will fill the thing in with the default or .MAIN target. 726 */ 727 if (!Lst_IsEmpty(create)) { 728 LstNode ln; 729 730 for (ln = Lst_First(create); ln != NILLNODE; 731 ln = Lst_Succ(ln)) { 732 char *name = (char *)Lst_Datum(ln); 733 734 Var_Append(".TARGETS", name, VAR_GLOBAL); 735 } 736 } else 737 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 738 739 740 /* 741 * If no user-supplied system path was given (through the -m option) 742 * add the directories from the DEFSYSPATH (more than one may be given 743 * as dir1:...:dirn) to the system include path. 744 */ 745 if (syspath == NULL || *syspath == '\0') 746 syspath = defsyspath; 747 else 748 syspath = strdup(syspath); 749 750 for (start = syspath; *start != '\0'; start = cp) { 751 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 752 continue; 753 if (*cp == '\0') { 754 (void) Dir_AddDir(defIncPath, start); 755 } else { 756 *cp++ = '\0'; 757 (void) Dir_AddDir(defIncPath, start); 758 } 759 } 760 if (syspath != defsyspath) 761 free(syspath); 762 763 /* 764 * Read in the built-in rules first, followed by the specified 765 * makefile, if it was (makefile != (char *) NULL), or the default 766 * Makefile and makefile, in that order, if it wasn't. 767 */ 768 if (!noBuiltins) { 769 LstNode ln; 770 771 sysMkPath = Lst_Init (FALSE); 772 Dir_Expand(_PATH_DEFSYSMK, 773 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 774 sysMkPath); 775 if (Lst_IsEmpty(sysMkPath)) 776 Fatal("%s: no system rules (%s).", progname, 777 _PATH_DEFSYSMK); 778 ln = Lst_Find(sysMkPath, (ClientData)NULL, ReadMakefile); 779 if (ln != NILLNODE) 780 Fatal("%s: cannot open %s.", progname, 781 (char *)Lst_Datum(ln)); 782 } 783 784 if (!Lst_IsEmpty(makefiles)) { 785 LstNode ln; 786 787 ln = Lst_Find(makefiles, (ClientData)NULL, ReadMakefile); 788 if (ln != NILLNODE) 789 Fatal("%s: cannot open %s.", progname, 790 (char *)Lst_Datum(ln)); 791 } else if (!ReadMakefile("makefile", NULL)) 792 (void)ReadMakefile("Makefile", NULL); 793 794 (void)ReadMakefile(".depend", NULL); 795 796 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 797 if (p1) 798 free(p1); 799 800 if (!jobServer && !compatMake) 801 Job_ServerStart(maxJobs); 802 if (DEBUG(JOB)) 803 printf("job_pipe %d %d, maxjobs %d maxlocal %d compat %d\n", job_pipe[0], job_pipe[1], maxJobs, 804 maxLocal, compatMake); 805 806 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 807 808 Check_Cwd_av(0, NULL, 0); /* initialize it */ 809 810 811 /* 812 * For compatibility, look at the directories in the VPATH variable 813 * and add them to the search path, if the variable is defined. The 814 * variable's value is in the same format as the PATH envariable, i.e. 815 * <directory>:<directory>:<directory>... 816 */ 817 if (Var_Exists("VPATH", VAR_CMD)) { 818 char *vpath, *path, *cp, savec; 819 /* 820 * GCC stores string constants in read-only memory, but 821 * Var_Subst will want to write this thing, so store it 822 * in an array 823 */ 824 static char VPATH[] = "${VPATH}"; 825 826 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 827 path = vpath; 828 do { 829 /* skip to end of directory */ 830 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 831 continue; 832 /* Save terminator character so know when to stop */ 833 savec = *cp; 834 *cp = '\0'; 835 /* Add directory to search path */ 836 (void) Dir_AddDir(dirSearchPath, path); 837 *cp = savec; 838 path = cp + 1; 839 } while (savec == ':'); 840 (void)free((Address)vpath); 841 } 842 843 /* 844 * Now that all search paths have been read for suffixes et al, it's 845 * time to add the default search path to their lists... 846 */ 847 Suff_DoPaths(); 848 849 /* 850 * Propagate attributes through :: dependency lists. 851 */ 852 Targ_Propagate(); 853 854 /* print the initial graph, if the user requested it */ 855 if (DEBUG(GRAPH1)) 856 Targ_PrintGraph(1); 857 858 /* print the values of any variables requested by the user */ 859 if (printVars) { 860 LstNode ln; 861 862 for (ln = Lst_First(variables); ln != NILLNODE; 863 ln = Lst_Succ(ln)) { 864 char *value = Var_Value((char *)Lst_Datum(ln), 865 VAR_GLOBAL, &p1); 866 867 printf("%s\n", value ? value : ""); 868 if (p1) 869 free(p1); 870 } 871 } 872 873 /* 874 * Have now read the entire graph and need to make a list of targets 875 * to create. If none was given on the command line, we consult the 876 * parsing module to find the main target(s) to create. 877 */ 878 if (Lst_IsEmpty(create)) 879 targs = Parse_MainName(); 880 else 881 targs = Targ_FindList(create, TARG_CREATE); 882 883 if (!compatMake && !printVars) { 884 /* 885 * Initialize job module before traversing the graph, now that 886 * any .BEGIN and .END targets have been read. This is done 887 * only if the -q flag wasn't given (to prevent the .BEGIN from 888 * being executed should it exist). 889 */ 890 if (!queryFlag) { 891 if (maxLocal == -1) 892 maxLocal = maxJobs; 893 Job_Init(maxJobs, maxLocal); 894 jobsRunning = TRUE; 895 } 896 897 /* Traverse the graph, checking on all the targets */ 898 outOfDate = Make_Run(targs); 899 } else if (!printVars) { 900 /* 901 * Compat_Init will take care of creating all the targets as 902 * well as initializing the module. 903 */ 904 Compat_Run(targs); 905 } 906 907 #ifdef CLEANUP 908 Lst_Destroy(targs, NOFREE); 909 Lst_Destroy(variables, NOFREE); 910 Lst_Destroy(makefiles, NOFREE); 911 Lst_Destroy(create, (void (*) __P((ClientData))) free); 912 #endif 913 914 /* print the graph now it's been processed if the user requested it */ 915 if (DEBUG(GRAPH2)) 916 Targ_PrintGraph(2); 917 918 Trace_Log(MAKEEND, 0); 919 920 Suff_End(); 921 Targ_End(); 922 Arch_End(); 923 Var_End(); 924 Parse_End(); 925 Dir_End(); 926 Job_End(); 927 Trace_End(); 928 929 if (queryFlag && outOfDate) 930 return(1); 931 else 932 return(0); 933 } 934 935 /*- 936 * ReadMakefile -- 937 * Open and parse the given makefile. 938 * 939 * Results: 940 * TRUE if ok. FALSE if couldn't open file. 941 * 942 * Side Effects: 943 * lots 944 */ 945 static Boolean 946 ReadMakefile(p, q) 947 ClientData p, q; 948 { 949 char *fname = p; /* makefile to read */ 950 FILE *stream; 951 size_t len = MAXPATHLEN; 952 char *name, *path = emalloc(len); 953 int setMAKEFILE; 954 955 if (!strcmp(fname, "-")) { 956 Parse_File("(stdin)", stdin); 957 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 958 } else { 959 setMAKEFILE = strcmp(fname, ".depend"); 960 961 /* if we've chdir'd, rebuild the path name */ 962 if (strcmp(curdir, objdir) && *fname != '/') { 963 size_t plen = strlen(curdir) + strlen(fname) + 2; 964 if (len < plen) 965 path = erealloc(path, len = 2 * plen); 966 967 (void)snprintf(path, len, "%s/%s", curdir, fname); 968 if ((stream = fopen(path, "r")) != NULL) { 969 fname = path; 970 goto found; 971 } 972 } else if ((stream = fopen(fname, "r")) != NULL) 973 goto found; 974 /* look in -I and system include directories. */ 975 name = Dir_FindFile(fname, parseIncPath); 976 if (!name) 977 name = Dir_FindFile(fname, 978 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 979 if (!name || !(stream = fopen(name, "r"))) { 980 free(path); 981 return(FALSE); 982 } 983 fname = name; 984 /* 985 * set the MAKEFILE variable desired by System V fans -- the 986 * placement of the setting here means it gets set to the last 987 * makefile specified, as it is set by SysV make. 988 */ 989 found: 990 if (setMAKEFILE) 991 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 992 Parse_File(fname, stream); 993 (void)fclose(stream); 994 } 995 free(path); 996 return(TRUE); 997 } 998 999 1000 /* 1001 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1002 * in situations that would not arrise with ./obj (links or not). 1003 * This tends to break things like: 1004 * 1005 * build: 1006 * ${MAKE} includes 1007 * 1008 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1009 * opposed to an argument) in a command line and if so returns 1010 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1011 * the Makefile hold true. 1012 * 1013 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1014 * 1015 * The chdir() only happens in the child process, and does nothing if 1016 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1017 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1018 * do nothing - to ensure historic semantics can be retained. 1019 */ 1020 static int Check_Cwd_Off = 0; 1021 1022 static char * 1023 Check_Cwd_av(ac, av, copy) 1024 int ac; 1025 char **av; 1026 int copy; 1027 { 1028 static char *make[4]; 1029 static char *curdir = NULL; 1030 char *cp, **mp; 1031 int is_cmd, next_cmd; 1032 int i; 1033 int n; 1034 1035 if (Check_Cwd_Off) 1036 return NULL; 1037 1038 if (make[0] == NULL) { 1039 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1040 Check_Cwd_Off = 1; 1041 return NULL; 1042 } 1043 1044 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1045 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1046 make[0] = make[1]; 1047 make[1] = NULL; 1048 } else 1049 ++make[0]; 1050 make[2] = NULL; 1051 curdir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1052 } 1053 if (ac == 0 || av == NULL) 1054 return NULL; /* initialization only */ 1055 1056 if (getenv("MAKEOBJDIR") == NULL && 1057 getenv("MAKEOBJDIRPREFIX") == NULL) 1058 return NULL; 1059 1060 1061 next_cmd = 1; 1062 for (i = 0; i < ac; ++i) { 1063 is_cmd = next_cmd; 1064 1065 n = strlen(av[i]); 1066 cp = &(av[i])[n - 1]; 1067 if (strspn(av[i], "|&;") == n) { 1068 next_cmd = 1; 1069 continue; 1070 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1071 next_cmd = 1; 1072 if (copy) { 1073 do { 1074 *cp-- = '\0'; 1075 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1076 *cp == ')' || *cp == '}') ; 1077 } else { 1078 /* 1079 * XXX this should not happen. 1080 */ 1081 fprintf(stderr, "WARNING: raw arg ends in shell meta '%s'\n", 1082 av[i]); 1083 } 1084 } else 1085 next_cmd = 0; 1086 1087 cp = av[i]; 1088 if (*cp == ';' || *cp == '&' || *cp == '|') 1089 is_cmd = 1; 1090 1091 #ifdef check_cwd_debug 1092 fprintf(stderr, "av[%d] == %s '%s'", 1093 i, (is_cmd) ? "cmd" : "arg", av[i]); 1094 #endif 1095 if (is_cmd != 0) { 1096 if (*cp == '(' || *cp == '{' || 1097 *cp == ';' || *cp == '&' || *cp == '|') { 1098 do { 1099 ++cp; 1100 } while (*cp == '(' || *cp == '{' || 1101 *cp == ';' || *cp == '&' || *cp == '|'); 1102 if (*cp == '\0') { 1103 next_cmd = 1; 1104 continue; 1105 } 1106 } 1107 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1108 #ifdef check_cwd_debug 1109 fprintf(stderr, " == cd, done.\n"); 1110 #endif 1111 return NULL; 1112 } 1113 for (mp = make; *mp != NULL; ++mp) { 1114 n = strlen(*mp); 1115 if (strcmp(cp, *mp) == 0) { 1116 #ifdef check_cwd_debug 1117 fprintf(stderr, " %s == '%s', chdir(%s)\n", 1118 cp, *mp, curdir); 1119 #endif 1120 return curdir; 1121 } 1122 } 1123 } 1124 #ifdef check_cwd_debug 1125 fprintf(stderr, "\n"); 1126 #endif 1127 } 1128 return NULL; 1129 } 1130 1131 char * 1132 Check_Cwd_Cmd(cmd) 1133 char *cmd; 1134 { 1135 char *cp, *bp, **av; 1136 int ac; 1137 1138 if (Check_Cwd_Off) 1139 return NULL; 1140 1141 if (cmd) { 1142 av = brk_string(cmd, &ac, TRUE, &bp); 1143 #ifdef check_cwd_debug 1144 fprintf(stderr, "splitting: '%s' -> %d words\n", 1145 cmd, ac); 1146 #endif 1147 } else { 1148 ac = 0; 1149 av = NULL; 1150 bp = NULL; 1151 } 1152 cp = Check_Cwd_av(ac, av, 1); 1153 if (bp) { 1154 free(av); 1155 free(bp); 1156 } 1157 return cp; 1158 } 1159 1160 void 1161 Check_Cwd(argv) 1162 char **argv; 1163 { 1164 char *cp; 1165 int ac; 1166 1167 if (Check_Cwd_Off) 1168 return; 1169 1170 for (ac = 0; argv[ac] != NULL; ++ac) 1171 /* NOTHING */; 1172 if (ac == 3 && *argv[1] == '-') { 1173 cp = Check_Cwd_Cmd(argv[2]); 1174 } else { 1175 cp = Check_Cwd_av(ac, argv, 0); 1176 } 1177 if (cp) { 1178 chdir(cp); 1179 } 1180 } 1181 1182 /*- 1183 * Cmd_Exec -- 1184 * Execute the command in cmd, and return the output of that command 1185 * in a string. 1186 * 1187 * Results: 1188 * A string containing the output of the command, or the empty string 1189 * If err is not NULL, it contains the reason for the command failure 1190 * 1191 * Side Effects: 1192 * The string must be freed by the caller. 1193 */ 1194 char * 1195 Cmd_Exec(cmd, err) 1196 char *cmd; 1197 char **err; 1198 { 1199 char *args[4]; /* Args for invoking the shell */ 1200 int fds[2]; /* Pipe streams */ 1201 int cpid; /* Child PID */ 1202 int pid; /* PID from wait() */ 1203 char *res; /* result */ 1204 int status; /* command exit status */ 1205 Buffer buf; /* buffer to store the result */ 1206 char *cp; 1207 int cc; 1208 1209 1210 *err = NULL; 1211 1212 /* 1213 * Set up arguments for shell 1214 */ 1215 args[0] = "sh"; 1216 args[1] = "-c"; 1217 args[2] = cmd; 1218 args[3] = NULL; 1219 1220 /* 1221 * Open a pipe for fetching its output 1222 */ 1223 if (pipe(fds) == -1) { 1224 *err = "Couldn't create pipe for \"%s\""; 1225 goto bad; 1226 } 1227 1228 /* 1229 * Fork 1230 */ 1231 switch (cpid = vfork()) { 1232 case 0: 1233 /* 1234 * Close input side of pipe 1235 */ 1236 (void) close(fds[0]); 1237 1238 /* 1239 * Duplicate the output stream to the shell's output, then 1240 * shut the extra thing down. Note we don't fetch the error 1241 * stream...why not? Why? 1242 */ 1243 (void) dup2(fds[1], 1); 1244 (void) close(fds[1]); 1245 1246 (void) execv("/bin/sh", args); 1247 _exit(1); 1248 /*NOTREACHED*/ 1249 1250 case -1: 1251 *err = "Couldn't exec \"%s\""; 1252 goto bad; 1253 1254 default: 1255 /* 1256 * No need for the writing half 1257 */ 1258 (void) close(fds[1]); 1259 1260 buf = Buf_Init (MAKE_BSIZE); 1261 1262 do { 1263 char result[BUFSIZ]; 1264 cc = read(fds[0], result, sizeof(result)); 1265 if (cc > 0) 1266 Buf_AddBytes(buf, cc, (Byte *) result); 1267 } 1268 while (cc > 0 || (cc == -1 && errno == EINTR)); 1269 1270 /* 1271 * Close the input side of the pipe. 1272 */ 1273 (void) close(fds[0]); 1274 1275 /* 1276 * Wait for the process to exit. 1277 */ 1278 while(((pid = wait(&status)) != cpid) && (pid >= 0)) 1279 continue; 1280 1281 res = (char *)Buf_GetAll (buf, &cc); 1282 Buf_Destroy (buf, FALSE); 1283 1284 if (cc == 0) 1285 *err = "Couldn't read shell's output for \"%s\""; 1286 1287 if (status) 1288 *err = "\"%s\" returned non-zero status"; 1289 1290 /* 1291 * Null-terminate the result, convert newlines to spaces and 1292 * install it in the variable. 1293 */ 1294 res[cc] = '\0'; 1295 cp = &res[cc]; 1296 1297 if (cc > 0 && *--cp == '\n') { 1298 /* 1299 * A final newline is just stripped 1300 */ 1301 *cp-- = '\0'; 1302 } 1303 while (cp >= res) { 1304 if (*cp == '\n') { 1305 *cp = ' '; 1306 } 1307 cp--; 1308 } 1309 break; 1310 } 1311 return res; 1312 bad: 1313 res = emalloc(1); 1314 *res = '\0'; 1315 return res; 1316 } 1317 1318 /*- 1319 * Error -- 1320 * Print an error message given its format. 1321 * 1322 * Results: 1323 * None. 1324 * 1325 * Side Effects: 1326 * The message is printed. 1327 */ 1328 /* VARARGS */ 1329 void 1330 #ifdef __STDC__ 1331 Error(char *fmt, ...) 1332 #else 1333 Error(va_alist) 1334 va_dcl 1335 #endif 1336 { 1337 va_list ap; 1338 #ifdef __STDC__ 1339 va_start(ap, fmt); 1340 #else 1341 char *fmt; 1342 1343 va_start(ap); 1344 fmt = va_arg(ap, char *); 1345 #endif 1346 fprintf(stderr, "%s: ", progname); 1347 (void)vfprintf(stderr, fmt, ap); 1348 va_end(ap); 1349 (void)fprintf(stderr, "\n"); 1350 (void)fflush(stderr); 1351 } 1352 1353 /*- 1354 * Fatal -- 1355 * Produce a Fatal error message. If jobs are running, waits for them 1356 * to finish. 1357 * 1358 * Results: 1359 * None 1360 * 1361 * Side Effects: 1362 * The program exits 1363 */ 1364 /* VARARGS */ 1365 void 1366 #ifdef __STDC__ 1367 Fatal(char *fmt, ...) 1368 #else 1369 Fatal(va_alist) 1370 va_dcl 1371 #endif 1372 { 1373 va_list ap; 1374 #ifdef __STDC__ 1375 va_start(ap, fmt); 1376 #else 1377 char *fmt; 1378 1379 va_start(ap); 1380 fmt = va_arg(ap, char *); 1381 #endif 1382 if (jobsRunning) 1383 Job_Wait(); 1384 Job_TokenFlush(); 1385 1386 (void)vfprintf(stderr, fmt, ap); 1387 va_end(ap); 1388 (void)fprintf(stderr, "\n"); 1389 (void)fflush(stderr); 1390 1391 PrintOnError(NULL); 1392 1393 if (DEBUG(GRAPH2)) 1394 Targ_PrintGraph(2); 1395 Trace_Log(MAKEERROR, 0); 1396 exit(2); /* Not 1 so -q can distinguish error */ 1397 } 1398 1399 /* 1400 * Punt -- 1401 * Major exception once jobs are being created. Kills all jobs, prints 1402 * a message and exits. 1403 * 1404 * Results: 1405 * None 1406 * 1407 * Side Effects: 1408 * All children are killed indiscriminately and the program Lib_Exits 1409 */ 1410 /* VARARGS */ 1411 void 1412 #ifdef __STDC__ 1413 Punt(char *fmt, ...) 1414 #else 1415 Punt(va_alist) 1416 va_dcl 1417 #endif 1418 { 1419 va_list ap; 1420 #ifdef __STDC__ 1421 va_start(ap, fmt); 1422 #else 1423 char *fmt; 1424 1425 va_start(ap); 1426 fmt = va_arg(ap, char *); 1427 #endif 1428 1429 (void)fprintf(stderr, "%s: ", progname); 1430 (void)vfprintf(stderr, fmt, ap); 1431 va_end(ap); 1432 (void)fprintf(stderr, "\n"); 1433 (void)fflush(stderr); 1434 1435 PrintOnError(NULL); 1436 1437 DieHorribly(); 1438 } 1439 1440 /*- 1441 * DieHorribly -- 1442 * Exit without giving a message. 1443 * 1444 * Results: 1445 * None 1446 * 1447 * Side Effects: 1448 * A big one... 1449 */ 1450 void 1451 DieHorribly() 1452 { 1453 if (jobsRunning) 1454 Job_AbortAll(); 1455 if (DEBUG(GRAPH2)) 1456 Targ_PrintGraph(2); 1457 Trace_Log(MAKEERROR, 0); 1458 exit(2); /* Not 1, so -q can distinguish error */ 1459 } 1460 1461 /* 1462 * Finish -- 1463 * Called when aborting due to errors in child shell to signal 1464 * abnormal exit. 1465 * 1466 * Results: 1467 * None 1468 * 1469 * Side Effects: 1470 * The program exits 1471 */ 1472 void 1473 Finish(errors) 1474 int errors; /* number of errors encountered in Make_Make */ 1475 { 1476 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1477 } 1478 1479 /* 1480 * emalloc -- 1481 * malloc, but die on error. 1482 */ 1483 void * 1484 emalloc(len) 1485 size_t len; 1486 { 1487 void *p; 1488 1489 if ((p = malloc(len)) == NULL) 1490 enomem(); 1491 return(p); 1492 } 1493 1494 /* 1495 * estrdup -- 1496 * strdup, but die on error. 1497 */ 1498 char * 1499 estrdup(str) 1500 const char *str; 1501 { 1502 char *p; 1503 1504 if ((p = strdup(str)) == NULL) 1505 enomem(); 1506 return(p); 1507 } 1508 1509 /* 1510 * erealloc -- 1511 * realloc, but die on error. 1512 */ 1513 void * 1514 erealloc(ptr, size) 1515 void *ptr; 1516 size_t size; 1517 { 1518 if ((ptr = realloc(ptr, size)) == NULL) 1519 enomem(); 1520 return(ptr); 1521 } 1522 1523 /* 1524 * enomem -- 1525 * die when out of memory. 1526 */ 1527 void 1528 enomem() 1529 { 1530 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 1531 exit(2); 1532 } 1533 1534 /* 1535 * enunlink -- 1536 * Remove a file carefully, avoiding directories. 1537 */ 1538 int 1539 eunlink(file) 1540 const char *file; 1541 { 1542 struct stat st; 1543 1544 if (lstat(file, &st) == -1) 1545 return -1; 1546 1547 if (S_ISDIR(st.st_mode)) { 1548 errno = EISDIR; 1549 return -1; 1550 } 1551 return unlink(file); 1552 } 1553 1554 /* 1555 * execError -- 1556 * Print why exec failed, avoiding stdio. 1557 */ 1558 void 1559 execError(av) 1560 const char *av; 1561 { 1562 #ifdef USE_IOVEC 1563 int i = 0; 1564 struct iovec iov[6]; 1565 #define IOADD(s) \ 1566 (void)(iov[i].iov_base = (s), \ 1567 iov[i].iov_len = strlen(iov[i].iov_base), \ 1568 i++) 1569 #else 1570 #define IOADD (void)write(2, s, strlen(s)) 1571 #endif 1572 1573 IOADD(progname); 1574 IOADD(": Exec of `"); 1575 IOADD((char *)av); 1576 IOADD("' failed ("); 1577 IOADD(strerror(errno)); 1578 IOADD(")\n"); 1579 1580 #ifdef USE_IOVEC 1581 (void)writev(2, iov, 6); 1582 #endif 1583 } 1584 1585 /* 1586 * usage -- 1587 * exit with usage message 1588 */ 1589 static void 1590 usage() 1591 { 1592 (void)fprintf(stderr, 1593 "Usage: %s [-Beiknqrst] [-D variable] [-d flags] [-f makefile ]\n\ 1594 [-I directory] [-j max_jobs] [-m directory] [-V variable]\n\ 1595 [variable=value] [target ...]\n", progname); 1596 exit(2); 1597 } 1598 1599 1600 int 1601 PrintAddr(a, b) 1602 ClientData a; 1603 ClientData b; 1604 { 1605 printf("%lx ", (unsigned long) a); 1606 return b ? 0 : 0; 1607 } 1608 1609 1610 1611 void 1612 PrintOnError(s) 1613 char *s; 1614 { 1615 char tmp[64]; 1616 1617 if (s) 1618 printf("%s", s); 1619 1620 printf("\n%s: stopped in %s\n", progname, curdir); 1621 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1622 sizeof(tmp) - 1); 1623 s = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1624 if (s && *s) 1625 printf("%s", s); 1626 } 1627 1628 void 1629 Main_ExportMAKEFLAGS(first) 1630 Boolean first; 1631 { 1632 static int once = 1; 1633 char tmp[64]; 1634 char *s; 1635 1636 if (once != first) 1637 return; 1638 once = 0; 1639 1640 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1641 sizeof(tmp)); 1642 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1643 if (s && *s) { 1644 #ifdef POSIX 1645 setenv("MAKEFLAGS", s, 1); 1646 #else 1647 setenv("MAKE", s, 1); 1648 #endif 1649 } 1650 } 1651
Indexes created Wed Sep 24 15:09:51 GMT 2025