main.c revision 1.140
1 /* $NetBSD: main.c,v 1.140 2006/12/16 08:59:29 dsl Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.140 2006/12/16 08:59:29 dsl Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\n\ 77 The Regents of the University of California. All rights reserved.\n"); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.140 2006/12/16 08:59:29 dsl Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and two optional 103 * arguments for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and two arguments. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and two arguments. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/signal.h> 121 #include <sys/stat.h> 122 #ifdef MAKE_NATIVE 123 #include <sys/utsname.h> 124 #endif 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <fcntl.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 134 #include "make.h" 135 #include "hash.h" 136 #include "dir.h" 137 #include "job.h" 138 #include "pathnames.h" 139 #include "trace.h" 140 141 #ifdef USE_IOVEC 142 #include <sys/uio.h> 143 #endif 144 145 #ifndef DEFMAXLOCAL 146 #define DEFMAXLOCAL DEFMAXJOBS 147 #endif /* DEFMAXLOCAL */ 148 149 Lst create; /* Targets to be made */ 150 time_t now; /* Time at start of make */ 151 GNode *DEFAULT; /* .DEFAULT node */ 152 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 153 154 static Boolean noBuiltins; /* -r flag */ 155 static Lst makefiles; /* ordered list of makefiles to read */ 156 static Boolean printVars; /* print value of one or more vars */ 157 static Lst variables; /* list of variables to print */ 158 int maxJobs; /* -j argument */ 159 static int maxJobTokens; /* -j argument */ 160 Boolean compatMake; /* -B argument */ 161 int debug; /* -d argument */ 162 Boolean noExecute; /* -n flag */ 163 Boolean noRecursiveExecute; /* -N flag */ 164 Boolean keepgoing; /* -k flag */ 165 Boolean queryFlag; /* -q flag */ 166 Boolean touchFlag; /* -t flag */ 167 Boolean ignoreErrors; /* -i flag */ 168 Boolean beSilent; /* -s flag */ 169 Boolean oldVars; /* variable substitution style */ 170 Boolean checkEnvFirst; /* -e flag */ 171 Boolean parseWarnFatal; /* -W flag */ 172 Boolean jobServer; /* -J flag */ 173 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 174 Boolean varNoExportEnv; /* -X flag */ 175 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 176 static const char * tracefile; 177 static char * Check_Cwd_av(int, char **, int); 178 static void MainParseArgs(int, char **); 179 static int ReadMakefile(ClientData, ClientData); 180 static void usage(void); 181 182 static char curdir[MAXPATHLEN + 1]; /* startup directory */ 183 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 184 char *progname; /* the program name */ 185 186 Boolean forceJobs = FALSE; 187 188 extern Lst parseIncPath; 189 190 static void 191 parse_debug_options(const char *argvalue) 192 { 193 const char *modules; 194 const char *mode; 195 char *fname; 196 int len; 197 198 for (modules = argvalue; *modules; ++modules) { 199 switch (*modules) { 200 case 'A': 201 debug = ~0; 202 break; 203 case 'a': 204 debug |= DEBUG_ARCH; 205 break; 206 case 'c': 207 debug |= DEBUG_COND; 208 break; 209 case 'd': 210 debug |= DEBUG_DIR; 211 break; 212 case 'e': 213 debug |= DEBUG_ERROR; 214 break; 215 case 'f': 216 debug |= DEBUG_FOR; 217 break; 218 case 'g': 219 if (modules[1] == '1') { 220 debug |= DEBUG_GRAPH1; 221 ++modules; 222 } 223 else if (modules[1] == '2') { 224 debug |= DEBUG_GRAPH2; 225 ++modules; 226 } 227 else if (modules[1] == '3') { 228 debug |= DEBUG_GRAPH3; 229 ++modules; 230 } 231 break; 232 case 'j': 233 debug |= DEBUG_JOB; 234 break; 235 case 'm': 236 debug |= DEBUG_MAKE; 237 break; 238 case 'n': 239 debug |= DEBUG_SCRIPT; 240 break; 241 case 'p': 242 debug |= DEBUG_PARSE; 243 break; 244 case 's': 245 debug |= DEBUG_SUFF; 246 break; 247 case 't': 248 debug |= DEBUG_TARG; 249 break; 250 case 'v': 251 debug |= DEBUG_VAR; 252 break; 253 case 'x': 254 debug |= DEBUG_SHELL; 255 break; 256 case 'F': 257 if (debug_file != stdout && debug_file != stderr) 258 fclose(debug_file); 259 if (*++modules == '+') 260 mode = "a"; 261 else { 262 if (!strcmp(modules, "stdout")) { 263 debug_file = stdout; 264 return; 265 } 266 if (!strcmp(modules, "stderr")) { 267 debug_file = stderr; 268 return; 269 } 270 mode = "w"; 271 } 272 len = strlen(modules); 273 fname = malloc(len + 20); 274 memcpy(fname, modules, len + 1); 275 /* Let the filename be modified by the pid */ 276 if (strcmp(fname + len - 3, ".%d") == 0) 277 snprintf(fname + len - 2, 20, "%d", getpid()); 278 debug_file = fopen(fname, mode); 279 if (!debug_file) { 280 fprintf(stderr, "Cannot open debug file %s\n", 281 fname); 282 usage(); 283 } 284 free(fname); 285 /* Have this non-buffered */ 286 setbuf(debug_file, NULL); 287 return; 288 default: 289 (void)fprintf(stderr, 290 "%s: illegal argument to d option -- %c\n", 291 progname, *modules); 292 usage(); 293 } 294 } 295 } 296 297 /*- 298 * MainParseArgs -- 299 * Parse a given argument vector. Called from main() and from 300 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 301 * 302 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 303 * 304 * Results: 305 * None 306 * 307 * Side Effects: 308 * Various global and local flags will be set depending on the flags 309 * given 310 */ 311 static void 312 MainParseArgs(int argc, char **argv) 313 { 314 char *p; 315 int c = '?'; 316 int arginc; 317 char *argvalue; 318 const char *getopt_def; 319 char *optscan; 320 Boolean inOption, dashDash = FALSE; 321 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 322 323 #define OPTFLAGS "BD:I:J:NST:V:WXd:ef:ij:km:nqrst" 324 /* Can't actually use getopt(3) because rescanning is not portable */ 325 326 getopt_def = OPTFLAGS; 327 rearg: 328 inOption = FALSE; 329 optscan = NULL; 330 while(argc > 1) { 331 char *getopt_spec; 332 if(!inOption) 333 optscan = argv[1]; 334 c = *optscan++; 335 arginc = 0; 336 if(inOption) { 337 if(c == '\0') { 338 ++argv; 339 --argc; 340 inOption = FALSE; 341 continue; 342 } 343 } else { 344 if (c != '-' || dashDash) 345 break; 346 inOption = TRUE; 347 c = *optscan++; 348 } 349 /* '-' found at some earlier point */ 350 getopt_spec = strchr(getopt_def, c); 351 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 352 /* -<something> found, and <something> should have an arg */ 353 inOption = FALSE; 354 arginc = 1; 355 argvalue = optscan; 356 if(*argvalue == '\0') { 357 if (argc < 3) 358 goto noarg; 359 argvalue = argv[2]; 360 arginc = 2; 361 } 362 } else { 363 argvalue = NULL; 364 } 365 switch(c) { 366 case '\0': 367 arginc = 1; 368 inOption = FALSE; 369 break; 370 case 'B': 371 compatMake = TRUE; 372 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 373 break; 374 case 'D': 375 if (argvalue == NULL) goto noarg; 376 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 377 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 378 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 379 break; 380 case 'I': 381 if (argvalue == NULL) goto noarg; 382 Parse_AddIncludeDir(argvalue); 383 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 384 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 385 break; 386 case 'J': 387 if (argvalue == NULL) goto noarg; 388 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 389 (void)fprintf(stderr, 390 "%s: internal error -- J option malformed (%s)\n", 391 progname, argvalue); 392 usage(); 393 } 394 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 395 (fcntl(jp_1, F_GETFD, 0) < 0)) { 396 #if 0 397 (void)fprintf(stderr, 398 "%s: ###### warning -- J descriptors were closed!\n", 399 progname); 400 exit(2); 401 #endif 402 jp_0 = -1; 403 jp_1 = -1; 404 compatMake = TRUE; 405 } else { 406 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 407 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 408 jobServer = TRUE; 409 } 410 break; 411 case 'N': 412 noExecute = TRUE; 413 noRecursiveExecute = TRUE; 414 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 415 break; 416 case 'S': 417 keepgoing = FALSE; 418 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 419 break; 420 case 'T': 421 if (argvalue == NULL) goto noarg; 422 tracefile = estrdup(argvalue); 423 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 424 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 425 break; 426 case 'V': 427 if (argvalue == NULL) goto noarg; 428 printVars = TRUE; 429 (void)Lst_AtEnd(variables, argvalue); 430 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 431 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 432 break; 433 case 'W': 434 parseWarnFatal = TRUE; 435 break; 436 case 'X': 437 varNoExportEnv = TRUE; 438 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 439 break; 440 case 'd': 441 if (argvalue == NULL) goto noarg; 442 /* If '-d-opts' don't pass to children */ 443 if (argvalue[0] == '-') 444 argvalue++; 445 else { 446 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 447 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 448 } 449 parse_debug_options(argvalue); 450 break; 451 case 'e': 452 checkEnvFirst = TRUE; 453 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 454 break; 455 case 'f': 456 if (argvalue == NULL) goto noarg; 457 (void)Lst_AtEnd(makefiles, argvalue); 458 break; 459 case 'i': 460 ignoreErrors = TRUE; 461 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 462 break; 463 case 'j': 464 if (argvalue == NULL) goto noarg; 465 forceJobs = TRUE; 466 maxJobs = strtol(argvalue, &p, 0); 467 if (*p != '\0' || maxJobs < 1) { 468 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 469 progname); 470 exit(1); 471 } 472 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 473 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 474 maxJobTokens = maxJobs; 475 break; 476 case 'k': 477 keepgoing = TRUE; 478 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 479 break; 480 case 'm': 481 if (argvalue == NULL) goto noarg; 482 /* look for magic parent directory search string */ 483 if (strncmp(".../", argvalue, 4) == 0) { 484 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 485 found_path, sizeof(found_path))) 486 break; /* nothing doing */ 487 (void)Dir_AddDir(sysIncPath, found_path); 488 489 } else { 490 (void)Dir_AddDir(sysIncPath, argvalue); 491 } 492 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 493 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 494 break; 495 case 'n': 496 noExecute = TRUE; 497 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 498 break; 499 case 'q': 500 queryFlag = TRUE; 501 /* Kind of nonsensical, wot? */ 502 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 503 break; 504 case 'r': 505 noBuiltins = TRUE; 506 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 507 break; 508 case 's': 509 beSilent = TRUE; 510 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 511 break; 512 case 't': 513 touchFlag = TRUE; 514 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 515 break; 516 case '-': 517 dashDash = TRUE; 518 break; 519 default: 520 case '?': 521 usage(); 522 } 523 argv += arginc; 524 argc -= arginc; 525 } 526 527 oldVars = TRUE; 528 529 /* 530 * See if the rest of the arguments are variable assignments and 531 * perform them if so. Else take them to be targets and stuff them 532 * on the end of the "create" list. 533 */ 534 for (; argc > 1; ++argv, --argc) 535 if (Parse_IsVar(argv[1])) { 536 Parse_DoVar(argv[1], VAR_CMD); 537 } else { 538 if (!*argv[1]) 539 Punt("illegal (null) argument."); 540 if (*argv[1] == '-' && !dashDash) 541 goto rearg; 542 (void)Lst_AtEnd(create, estrdup(argv[1])); 543 } 544 545 return; 546 noarg: 547 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 548 progname, c); 549 usage(); 550 } 551 552 /*- 553 * Main_ParseArgLine -- 554 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 555 * is encountered and by main() when reading the .MAKEFLAGS envariable. 556 * Takes a line of arguments and breaks it into its 557 * component words and passes those words and the number of them to the 558 * MainParseArgs function. 559 * The line should have all its leading whitespace removed. 560 * 561 * Input: 562 * line Line to fracture 563 * 564 * Results: 565 * None 566 * 567 * Side Effects: 568 * Only those that come from the various arguments. 569 */ 570 void 571 Main_ParseArgLine(char *line) 572 { 573 char **argv; /* Manufactured argument vector */ 574 int argc; /* Number of arguments in argv */ 575 char *args; /* Space used by the args */ 576 char *buf, *p1; 577 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 578 size_t len; 579 580 if (line == NULL) 581 return; 582 for (; *line == ' '; ++line) 583 continue; 584 if (!*line) 585 return; 586 587 buf = emalloc(len = strlen(line) + strlen(argv0) + 2); 588 (void)snprintf(buf, len, "%s %s", argv0, line); 589 if (p1) 590 free(p1); 591 592 argv = brk_string(buf, &argc, TRUE, &args); 593 free(buf); 594 MainParseArgs(argc, argv); 595 596 free(args); 597 free(argv); 598 } 599 600 Boolean 601 Main_SetObjdir(const char *path) 602 { 603 struct stat sb; 604 char *p = NULL; 605 char buf[MAXPATHLEN + 1]; 606 Boolean rc = FALSE; 607 608 /* expand variable substitutions */ 609 if (strchr(path, '$') != 0) { 610 snprintf(buf, MAXPATHLEN, "%s", path); 611 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 612 } 613 614 if (path[0] != '/') { 615 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 616 path = buf; 617 } 618 619 /* look for the directory and try to chdir there */ 620 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 621 if (chdir(path)) { 622 (void)fprintf(stderr, "make warning: %s: %s.\n", 623 path, strerror(errno)); 624 } else { 625 strncpy(objdir, path, MAXPATHLEN); 626 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 627 setenv("PWD", objdir, 1); 628 Dir_InitDot(); 629 rc = TRUE; 630 } 631 } 632 633 if (p) 634 free(p); 635 return rc; 636 } 637 638 /*- 639 * ReadAllMakefiles -- 640 * wrapper around ReadMakefile() to read all. 641 * 642 * Results: 643 * TRUE if ok, FALSE on error 644 */ 645 static int 646 ReadAllMakefiles(ClientData p, ClientData q) 647 { 648 return (ReadMakefile(p, q) == 0); 649 } 650 651 /*- 652 * main -- 653 * The main function, for obvious reasons. Initializes variables 654 * and a few modules, then parses the arguments give it in the 655 * environment and on the command line. Reads the system makefile 656 * followed by either Makefile, makefile or the file given by the 657 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 658 * flags it has received by then uses either the Make or the Compat 659 * module to create the initial list of targets. 660 * 661 * Results: 662 * If -q was given, exits -1 if anything was out-of-date. Else it exits 663 * 0. 664 * 665 * Side Effects: 666 * The program exits when done. Targets are created. etc. etc. etc. 667 */ 668 int 669 main(int argc, char **argv) 670 { 671 Lst targs; /* target nodes to create -- passed to Make_Init */ 672 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 673 struct stat sb, sa; 674 char *p1, *path, *pwd; 675 char mdpath[MAXPATHLEN]; 676 char *machine = getenv("MACHINE"); 677 const char *machine_arch = getenv("MACHINE_ARCH"); 678 char *syspath = getenv("MAKESYSPATH"); 679 Lst sysMkPath; /* Path of sys.mk */ 680 char *cp = NULL, *start; 681 /* avoid faults on read-only strings */ 682 static char defsyspath[] = _PATH_DEFSYSPATH; 683 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 684 struct timeval rightnow; /* to initialize random seed */ 685 #ifdef MAKE_NATIVE 686 struct utsname utsname; 687 #endif 688 689 /* default to writing debug to stdout */ 690 debug_file = stdout; 691 692 /* 693 * Set the seed to produce a different random sequences 694 * on each program execution. 695 */ 696 gettimeofday(&rightnow, NULL); 697 srandom(rightnow.tv_sec + rightnow.tv_usec); 698 699 if ((progname = strrchr(argv[0], '/')) != NULL) 700 progname++; 701 else 702 progname = argv[0]; 703 #ifdef RLIMIT_NOFILE 704 /* 705 * get rid of resource limit on file descriptors 706 */ 707 { 708 struct rlimit rl; 709 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 710 rl.rlim_cur != rl.rlim_max) { 711 rl.rlim_cur = rl.rlim_max; 712 (void)setrlimit(RLIMIT_NOFILE, &rl); 713 } 714 } 715 #endif 716 /* 717 * Find where we are and take care of PWD for the automounter... 718 * All this code is so that we know where we are when we start up 719 * on a different machine with pmake. 720 */ 721 if (getcwd(curdir, MAXPATHLEN) == NULL) { 722 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 723 exit(2); 724 } 725 726 if (stat(curdir, &sa) == -1) { 727 (void)fprintf(stderr, "%s: %s: %s.\n", 728 progname, curdir, strerror(errno)); 729 exit(2); 730 } 731 732 /* 733 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 734 * since the value of curdir can very depending on how we got 735 * here. Ie sitting at a shell prompt (shell that provides $PWD) 736 * or via subdir.mk in which case its likely a shell which does 737 * not provide it. 738 * So, to stop it breaking this case only, we ignore PWD if 739 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 740 */ 741 if ((pwd = getenv("PWD")) != NULL && getenv("MAKEOBJDIRPREFIX") == NULL) { 742 const char *makeobjdir = getenv("MAKEOBJDIR"); 743 744 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 745 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 746 sa.st_dev == sb.st_dev) 747 (void)strncpy(curdir, pwd, MAXPATHLEN); 748 } 749 } 750 751 /* 752 * Get the name of this type of MACHINE from utsname 753 * so we can share an executable for similar machines. 754 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 755 * 756 * Note that both MACHINE and MACHINE_ARCH are decided at 757 * run-time. 758 */ 759 if (!machine) { 760 #ifdef MAKE_NATIVE 761 if (uname(&utsname) == -1) { 762 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 763 strerror(errno)); 764 exit(2); 765 } 766 machine = utsname.machine; 767 #else 768 #ifdef MAKE_MACHINE 769 machine = MAKE_MACHINE; 770 #else 771 machine = "unknown"; 772 #endif 773 #endif 774 } 775 776 if (!machine_arch) { 777 #ifndef MACHINE_ARCH 778 #ifdef MAKE_MACHINE_ARCH 779 machine_arch = MAKE_MACHINE_ARCH; 780 #else 781 machine_arch = "unknown"; 782 #endif 783 #else 784 machine_arch = MACHINE_ARCH; 785 #endif 786 } 787 788 /* 789 * Just in case MAKEOBJDIR wants us to do something tricky. 790 */ 791 Var_Init(); /* Initialize the lists of variables for 792 * parsing arguments */ 793 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 794 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 795 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 796 #ifdef MAKE_VERSION 797 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 798 #endif 799 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 800 801 /* 802 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 803 * MAKEOBJDIR is set in the environment, try only that value 804 * and fall back to .CURDIR if it does not exist. 805 * 806 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 807 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 808 * of these paths exist, just use .CURDIR. 809 */ 810 Dir_Init(curdir); 811 (void)Main_SetObjdir(curdir); 812 813 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 814 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 815 (void)Main_SetObjdir(mdpath); 816 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 817 (void)Main_SetObjdir(path); 818 } else { 819 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 820 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 821 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 822 _PATH_OBJDIRPREFIX, curdir); 823 (void)Main_SetObjdir(mdpath); 824 } 825 } 826 827 create = Lst_Init(FALSE); 828 makefiles = Lst_Init(FALSE); 829 printVars = FALSE; 830 variables = Lst_Init(FALSE); 831 beSilent = FALSE; /* Print commands as executed */ 832 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 833 noExecute = FALSE; /* Execute all commands */ 834 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 835 keepgoing = FALSE; /* Stop on error */ 836 allPrecious = FALSE; /* Remove targets when interrupted */ 837 queryFlag = FALSE; /* This is not just a check-run */ 838 noBuiltins = FALSE; /* Read the built-in rules */ 839 touchFlag = FALSE; /* Actually update targets */ 840 debug = 0; /* No debug verbosity, please. */ 841 jobsRunning = FALSE; 842 843 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 844 maxJobTokens = maxJobs; 845 compatMake = FALSE; /* No compat mode */ 846 847 848 /* 849 * Initialize the parsing, directory and variable modules to prepare 850 * for the reading of inclusion paths and variable settings on the 851 * command line 852 */ 853 854 /* 855 * Initialize various variables. 856 * MAKE also gets this name, for compatibility 857 * .MAKEFLAGS gets set to the empty string just in case. 858 * MFLAGS also gets initialized empty, for compatibility. 859 */ 860 Parse_Init(); 861 Var_Set("MAKE", argv[0], VAR_GLOBAL, 0); 862 Var_Set(".MAKE", argv[0], VAR_GLOBAL, 0); 863 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 864 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 865 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 866 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 867 868 /* 869 * First snag any flags out of the MAKE environment variable. 870 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 871 * in a different format). 872 */ 873 #ifdef POSIX 874 Main_ParseArgLine(getenv("MAKEFLAGS")); 875 #else 876 Main_ParseArgLine(getenv("MAKE")); 877 #endif 878 879 MainParseArgs(argc, argv); 880 881 /* 882 * Be compatible if user did not specify -j and did not explicitly 883 * turned compatibility on 884 */ 885 if (!compatMake && !forceJobs) { 886 compatMake = TRUE; 887 } 888 889 /* 890 * Initialize archive, target and suffix modules in preparation for 891 * parsing the makefile(s) 892 */ 893 Arch_Init(); 894 Targ_Init(); 895 Suff_Init(); 896 Trace_Init(tracefile); 897 898 DEFAULT = NILGNODE; 899 (void)time(&now); 900 901 Trace_Log(MAKESTART, NULL); 902 903 /* 904 * Set up the .TARGETS variable to contain the list of targets to be 905 * created. If none specified, make the variable empty -- the parser 906 * will fill the thing in with the default or .MAIN target. 907 */ 908 if (!Lst_IsEmpty(create)) { 909 LstNode ln; 910 911 for (ln = Lst_First(create); ln != NILLNODE; 912 ln = Lst_Succ(ln)) { 913 char *name = (char *)Lst_Datum(ln); 914 915 Var_Append(".TARGETS", name, VAR_GLOBAL); 916 } 917 } else 918 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 919 920 921 /* 922 * If no user-supplied system path was given (through the -m option) 923 * add the directories from the DEFSYSPATH (more than one may be given 924 * as dir1:...:dirn) to the system include path. 925 */ 926 if (syspath == NULL || *syspath == '\0') 927 syspath = defsyspath; 928 else 929 syspath = strdup(syspath); 930 931 for (start = syspath; *start != '\0'; start = cp) { 932 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 933 continue; 934 if (*cp == ':') { 935 *cp++ = '\0'; 936 } 937 /* look for magic parent directory search string */ 938 if (strncmp(".../", start, 4) != 0) { 939 (void)Dir_AddDir(defIncPath, start); 940 } else { 941 if (Dir_FindHereOrAbove(curdir, start+4, 942 found_path, sizeof(found_path))) { 943 (void)Dir_AddDir(defIncPath, found_path); 944 } 945 } 946 } 947 if (syspath != defsyspath) 948 free(syspath); 949 950 /* 951 * Read in the built-in rules first, followed by the specified 952 * makefile, if it was (makefile != NULL), or the default 953 * makefile and Makefile, in that order, if it wasn't. 954 */ 955 if (!noBuiltins) { 956 LstNode ln; 957 958 sysMkPath = Lst_Init(FALSE); 959 Dir_Expand(_PATH_DEFSYSMK, 960 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 961 sysMkPath); 962 if (Lst_IsEmpty(sysMkPath)) 963 Fatal("%s: no system rules (%s).", progname, 964 _PATH_DEFSYSMK); 965 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 966 if (ln == NILLNODE) 967 Fatal("%s: cannot open %s.", progname, 968 (char *)Lst_Datum(ln)); 969 } 970 971 if (!Lst_IsEmpty(makefiles)) { 972 LstNode ln; 973 974 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 975 if (ln != NILLNODE) 976 Fatal("%s: cannot open %s.", progname, 977 (char *)Lst_Datum(ln)); 978 } else if (ReadMakefile(UNCONST("makefile"), NULL) != 0) 979 (void)ReadMakefile(UNCONST("Makefile"), NULL); 980 981 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 982 if (!noBuiltins || !printVars) 983 (void)ReadMakefile(UNCONST(".depend"), NULL); 984 985 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 986 if (p1) 987 free(p1); 988 989 if (!compatMake) 990 Job_ServerStart(maxJobTokens, jp_0, jp_1); 991 if (DEBUG(JOB)) 992 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 993 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 994 995 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 996 997 Check_Cwd_av(0, NULL, 0); /* initialize it */ 998 999 1000 /* 1001 * For compatibility, look at the directories in the VPATH variable 1002 * and add them to the search path, if the variable is defined. The 1003 * variable's value is in the same format as the PATH envariable, i.e. 1004 * <directory>:<directory>:<directory>... 1005 */ 1006 if (Var_Exists("VPATH", VAR_CMD)) { 1007 char *vpath, savec; 1008 /* 1009 * GCC stores string constants in read-only memory, but 1010 * Var_Subst will want to write this thing, so store it 1011 * in an array 1012 */ 1013 static char VPATH[] = "${VPATH}"; 1014 1015 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1016 path = vpath; 1017 do { 1018 /* skip to end of directory */ 1019 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1020 continue; 1021 /* Save terminator character so know when to stop */ 1022 savec = *cp; 1023 *cp = '\0'; 1024 /* Add directory to search path */ 1025 (void)Dir_AddDir(dirSearchPath, path); 1026 *cp = savec; 1027 path = cp + 1; 1028 } while (savec == ':'); 1029 free(vpath); 1030 } 1031 1032 /* 1033 * Now that all search paths have been read for suffixes et al, it's 1034 * time to add the default search path to their lists... 1035 */ 1036 Suff_DoPaths(); 1037 1038 /* 1039 * Propagate attributes through :: dependency lists. 1040 */ 1041 Targ_Propagate(); 1042 1043 /* print the initial graph, if the user requested it */ 1044 if (DEBUG(GRAPH1)) 1045 Targ_PrintGraph(1); 1046 1047 /* print the values of any variables requested by the user */ 1048 if (printVars) { 1049 LstNode ln; 1050 1051 for (ln = Lst_First(variables); ln != NILLNODE; 1052 ln = Lst_Succ(ln)) { 1053 char *var = (char *)Lst_Datum(ln); 1054 char *value; 1055 1056 if (strchr(var, '$')) { 1057 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1058 } else { 1059 value = Var_Value(var, VAR_GLOBAL, &p1); 1060 } 1061 printf("%s\n", value ? value : ""); 1062 if (p1) 1063 free(p1); 1064 } 1065 } else { 1066 /* 1067 * Have now read the entire graph and need to make a list of 1068 * targets to create. If none was given on the command line, 1069 * we consult the parsing module to find the main target(s) 1070 * to create. 1071 */ 1072 if (Lst_IsEmpty(create)) 1073 targs = Parse_MainName(); 1074 else 1075 targs = Targ_FindList(create, TARG_CREATE); 1076 1077 if (!compatMake) { 1078 /* 1079 * Initialize job module before traversing the graph 1080 * now that any .BEGIN and .END targets have been read. 1081 * This is done only if the -q flag wasn't given 1082 * (to prevent the .BEGIN from being executed should 1083 * it exist). 1084 */ 1085 if (!queryFlag) { 1086 Job_Init(); 1087 jobsRunning = TRUE; 1088 } 1089 1090 /* Traverse the graph, checking on all the targets */ 1091 outOfDate = Make_Run(targs); 1092 } else { 1093 /* 1094 * Compat_Init will take care of creating all the 1095 * targets as well as initializing the module. 1096 */ 1097 Compat_Run(targs); 1098 } 1099 } 1100 1101 #ifdef CLEANUP 1102 Lst_Destroy(targs, NOFREE); 1103 Lst_Destroy(variables, NOFREE); 1104 Lst_Destroy(makefiles, NOFREE); 1105 Lst_Destroy(create, (FreeProc *)free); 1106 #endif 1107 1108 /* print the graph now it's been processed if the user requested it */ 1109 if (DEBUG(GRAPH2)) 1110 Targ_PrintGraph(2); 1111 1112 Trace_Log(MAKEEND, 0); 1113 1114 Suff_End(); 1115 Targ_End(); 1116 Arch_End(); 1117 Var_End(); 1118 Parse_End(); 1119 Dir_End(); 1120 Job_End(); 1121 Trace_End(); 1122 1123 return outOfDate ? 1 : 0; 1124 } 1125 1126 /*- 1127 * ReadMakefile -- 1128 * Open and parse the given makefile. 1129 * 1130 * Results: 1131 * 0 if ok. -1 if couldn't open file. 1132 * 1133 * Side Effects: 1134 * lots 1135 */ 1136 static int 1137 ReadMakefile(ClientData p, ClientData q __unused) 1138 { 1139 char *fname = p; /* makefile to read */ 1140 int fd; 1141 size_t len = MAXPATHLEN; 1142 char *name, *path = emalloc(len); 1143 int setMAKEFILE; 1144 1145 if (!strcmp(fname, "-")) { 1146 Parse_File("(stdin)", dup(fileno(stdin))); 1147 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1148 } else { 1149 setMAKEFILE = strcmp(fname, ".depend"); 1150 1151 /* if we've chdir'd, rebuild the path name */ 1152 if (strcmp(curdir, objdir) && *fname != '/') { 1153 size_t plen = strlen(curdir) + strlen(fname) + 2; 1154 if (len < plen) 1155 path = erealloc(path, len = 2 * plen); 1156 1157 (void)snprintf(path, len, "%s/%s", curdir, fname); 1158 fd = open(path, O_RDONLY); 1159 if (fd != -1) { 1160 fname = path; 1161 goto found; 1162 } 1163 1164 /* If curdir failed, try objdir (ala .depend) */ 1165 plen = strlen(objdir) + strlen(fname) + 2; 1166 if (len < plen) 1167 path = erealloc(path, len = 2 * plen); 1168 (void)snprintf(path, len, "%s/%s", objdir, fname); 1169 fd = open(path, O_RDONLY); 1170 if (fd != -1) { 1171 fname = path; 1172 goto found; 1173 } 1174 } else { 1175 fd = open(fname, O_RDONLY); 1176 if (fd != -1) 1177 goto found; 1178 } 1179 /* look in -I and system include directories. */ 1180 name = Dir_FindFile(fname, parseIncPath); 1181 if (!name) 1182 name = Dir_FindFile(fname, 1183 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1184 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1185 if (name) 1186 free(name); 1187 free(path); 1188 return(-1); 1189 } 1190 fname = name; 1191 /* 1192 * set the MAKEFILE variable desired by System V fans -- the 1193 * placement of the setting here means it gets set to the last 1194 * makefile specified, as it is set by SysV make. 1195 */ 1196 found: 1197 if (setMAKEFILE) 1198 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1199 Parse_File(fname, fd); 1200 } 1201 free(path); 1202 return(0); 1203 } 1204 1205 1206 /* 1207 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1208 * in situations that would not arrise with ./obj (links or not). 1209 * This tends to break things like: 1210 * 1211 * build: 1212 * ${MAKE} includes 1213 * 1214 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1215 * opposed to an argument) in a command line and if so returns 1216 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1217 * the Makefile hold true. 1218 * 1219 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1220 * 1221 * The chdir() only happens in the child process, and does nothing if 1222 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1223 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1224 * do nothing - to ensure historic semantics can be retained. 1225 */ 1226 static int Check_Cwd_Off = 0; 1227 1228 static char * 1229 Check_Cwd_av(int ac, char **av, int copy) 1230 { 1231 static char *make[4]; 1232 static char *cur_dir = NULL; 1233 char **mp; 1234 char *cp; 1235 int is_cmd, next_cmd; 1236 int i; 1237 int n; 1238 1239 if (Check_Cwd_Off) 1240 return NULL; 1241 1242 if (make[0] == NULL) { 1243 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1244 Check_Cwd_Off = 1; 1245 return NULL; 1246 } 1247 1248 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1249 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1250 make[0] = make[1]; 1251 make[1] = NULL; 1252 } else 1253 ++make[0]; 1254 make[2] = NULL; 1255 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1256 } 1257 if (ac == 0 || av == NULL) 1258 return NULL; /* initialization only */ 1259 1260 if (getenv("MAKEOBJDIR") == NULL && 1261 getenv("MAKEOBJDIRPREFIX") == NULL) 1262 return NULL; 1263 1264 1265 next_cmd = 1; 1266 for (i = 0; i < ac; ++i) { 1267 is_cmd = next_cmd; 1268 1269 n = strlen(av[i]); 1270 cp = &(av[i])[n - 1]; 1271 if (strspn(av[i], "|&;") == (size_t)n) { 1272 next_cmd = 1; 1273 continue; 1274 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1275 next_cmd = 1; 1276 if (copy) { 1277 do { 1278 *cp-- = '\0'; 1279 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1280 *cp == ')' || *cp == '}') ; 1281 } else { 1282 /* 1283 * XXX this should not happen. 1284 */ 1285 fprintf(stderr, "WARNING: raw arg ends in shell meta '%s'\n", 1286 av[i]); 1287 } 1288 } else 1289 next_cmd = 0; 1290 1291 cp = av[i]; 1292 if (*cp == ';' || *cp == '&' || *cp == '|') 1293 is_cmd = 1; 1294 1295 #ifdef check_cwd_debug 1296 fprintf(stderr, "av[%d] == %s '%s'", 1297 i, (is_cmd) ? "cmd" : "arg", av[i]); 1298 #endif 1299 if (is_cmd != 0) { 1300 if (*cp == '(' || *cp == '{' || 1301 *cp == ';' || *cp == '&' || *cp == '|') { 1302 do { 1303 ++cp; 1304 } while (*cp == '(' || *cp == '{' || 1305 *cp == ';' || *cp == '&' || *cp == '|'); 1306 if (*cp == '\0') { 1307 next_cmd = 1; 1308 continue; 1309 } 1310 } 1311 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1312 #ifdef check_cwd_debug 1313 fprintf(stderr, " == cd, done.\n"); 1314 #endif 1315 return NULL; 1316 } 1317 for (mp = make; *mp != NULL; ++mp) { 1318 n = strlen(*mp); 1319 if (strcmp(cp, *mp) == 0) { 1320 #ifdef check_cwd_debug 1321 fprintf(stderr, " %s == '%s', chdir(%s)\n", 1322 cp, *mp, cur_dir); 1323 #endif 1324 return cur_dir; 1325 } 1326 } 1327 } 1328 #ifdef check_cwd_debug 1329 fprintf(stderr, "\n"); 1330 #endif 1331 } 1332 return NULL; 1333 } 1334 1335 char * 1336 Check_Cwd_Cmd(const char *cmd) 1337 { 1338 char *cp, *bp; 1339 char **av; 1340 int ac; 1341 1342 if (Check_Cwd_Off) 1343 return NULL; 1344 1345 if (cmd) { 1346 av = brk_string(cmd, &ac, TRUE, &bp); 1347 #ifdef check_cwd_debug 1348 fprintf(stderr, "splitting: '%s' -> %d words\n", 1349 cmd, ac); 1350 #endif 1351 } else { 1352 ac = 0; 1353 av = NULL; 1354 bp = NULL; 1355 } 1356 cp = Check_Cwd_av(ac, av, 1); 1357 if (bp) 1358 free(bp); 1359 if (av) 1360 free(av); 1361 return cp; 1362 } 1363 1364 void 1365 Check_Cwd(const char **argv) 1366 { 1367 char *cp; 1368 int ac; 1369 1370 if (Check_Cwd_Off) 1371 return; 1372 1373 for (ac = 0; argv[ac] != NULL; ++ac) 1374 /* NOTHING */; 1375 if (ac == 3 && *argv[1] == '-') { 1376 cp = Check_Cwd_Cmd(argv[2]); 1377 } else { 1378 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1379 } 1380 if (cp) { 1381 chdir(cp); 1382 } 1383 } 1384 1385 /*- 1386 * Cmd_Exec -- 1387 * Execute the command in cmd, and return the output of that command 1388 * in a string. 1389 * 1390 * Results: 1391 * A string containing the output of the command, or the empty string 1392 * If errnum is not NULL, it contains the reason for the command failure 1393 * 1394 * Side Effects: 1395 * The string must be freed by the caller. 1396 */ 1397 char * 1398 Cmd_Exec(const char *cmd, const char **errnum) 1399 { 1400 const char *args[4]; /* Args for invoking the shell */ 1401 int fds[2]; /* Pipe streams */ 1402 int cpid; /* Child PID */ 1403 int pid; /* PID from wait() */ 1404 char *res; /* result */ 1405 int status; /* command exit status */ 1406 Buffer buf; /* buffer to store the result */ 1407 char *cp; 1408 int cc; 1409 1410 1411 *errnum = NULL; 1412 1413 if (!shellName) 1414 Shell_Init(); 1415 /* 1416 * Set up arguments for shell 1417 */ 1418 args[0] = shellName; 1419 args[1] = "-c"; 1420 args[2] = cmd; 1421 args[3] = NULL; 1422 1423 /* 1424 * Open a pipe for fetching its output 1425 */ 1426 if (pipe(fds) == -1) { 1427 *errnum = "Couldn't create pipe for \"%s\""; 1428 goto bad; 1429 } 1430 1431 /* 1432 * Fork 1433 */ 1434 switch (cpid = vfork()) { 1435 case 0: 1436 /* 1437 * Close input side of pipe 1438 */ 1439 (void)close(fds[0]); 1440 1441 /* 1442 * Duplicate the output stream to the shell's output, then 1443 * shut the extra thing down. Note we don't fetch the error 1444 * stream...why not? Why? 1445 */ 1446 (void)dup2(fds[1], 1); 1447 (void)close(fds[1]); 1448 1449 (void)execv(shellPath, UNCONST(args)); 1450 _exit(1); 1451 /*NOTREACHED*/ 1452 1453 case -1: 1454 *errnum = "Couldn't exec \"%s\""; 1455 goto bad; 1456 1457 default: 1458 /* 1459 * No need for the writing half 1460 */ 1461 (void)close(fds[1]); 1462 1463 buf = Buf_Init(MAKE_BSIZE); 1464 1465 do { 1466 char result[BUFSIZ]; 1467 cc = read(fds[0], result, sizeof(result)); 1468 if (cc > 0) 1469 Buf_AddBytes(buf, cc, (Byte *)result); 1470 } 1471 while (cc > 0 || (cc == -1 && errno == EINTR)); 1472 1473 /* 1474 * Close the input side of the pipe. 1475 */ 1476 (void)close(fds[0]); 1477 1478 /* 1479 * Wait for the process to exit. 1480 */ 1481 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) 1482 continue; 1483 1484 res = (char *)Buf_GetAll(buf, &cc); 1485 Buf_Destroy(buf, FALSE); 1486 1487 if (cc == 0) 1488 *errnum = "Couldn't read shell's output for \"%s\""; 1489 1490 if (status) 1491 *errnum = "\"%s\" returned non-zero status"; 1492 1493 /* 1494 * Null-terminate the result, convert newlines to spaces and 1495 * install it in the variable. 1496 */ 1497 res[cc] = '\0'; 1498 cp = &res[cc]; 1499 1500 if (cc > 0 && *--cp == '\n') { 1501 /* 1502 * A final newline is just stripped 1503 */ 1504 *cp-- = '\0'; 1505 } 1506 while (cp >= res) { 1507 if (*cp == '\n') { 1508 *cp = ' '; 1509 } 1510 cp--; 1511 } 1512 break; 1513 } 1514 return res; 1515 bad: 1516 res = emalloc(1); 1517 *res = '\0'; 1518 return res; 1519 } 1520 1521 /*- 1522 * Error -- 1523 * Print an error message given its format. 1524 * 1525 * Results: 1526 * None. 1527 * 1528 * Side Effects: 1529 * The message is printed. 1530 */ 1531 /* VARARGS */ 1532 void 1533 Error(const char *fmt, ...) 1534 { 1535 va_list ap; 1536 1537 va_start(ap, fmt); 1538 fprintf(stderr, "%s: ", progname); 1539 (void)vfprintf(stderr, fmt, ap); 1540 va_end(ap); 1541 (void)fprintf(stderr, "\n"); 1542 (void)fflush(stderr); 1543 } 1544 1545 /*- 1546 * Fatal -- 1547 * Produce a Fatal error message. If jobs are running, waits for them 1548 * to finish. 1549 * 1550 * Results: 1551 * None 1552 * 1553 * Side Effects: 1554 * The program exits 1555 */ 1556 /* VARARGS */ 1557 void 1558 Fatal(const char *fmt, ...) 1559 { 1560 va_list ap; 1561 1562 va_start(ap, fmt); 1563 if (jobsRunning) 1564 Job_Wait(); 1565 1566 (void)vfprintf(stderr, fmt, ap); 1567 va_end(ap); 1568 (void)fprintf(stderr, "\n"); 1569 (void)fflush(stderr); 1570 1571 PrintOnError(NULL); 1572 1573 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1574 Targ_PrintGraph(2); 1575 Trace_Log(MAKEERROR, 0); 1576 exit(2); /* Not 1 so -q can distinguish error */ 1577 } 1578 1579 /* 1580 * Punt -- 1581 * Major exception once jobs are being created. Kills all jobs, prints 1582 * a message and exits. 1583 * 1584 * Results: 1585 * None 1586 * 1587 * Side Effects: 1588 * All children are killed indiscriminately and the program Lib_Exits 1589 */ 1590 /* VARARGS */ 1591 void 1592 Punt(const char *fmt, ...) 1593 { 1594 va_list ap; 1595 1596 va_start(ap, fmt); 1597 (void)fprintf(stderr, "%s: ", progname); 1598 (void)vfprintf(stderr, fmt, ap); 1599 va_end(ap); 1600 (void)fprintf(stderr, "\n"); 1601 (void)fflush(stderr); 1602 1603 PrintOnError(NULL); 1604 1605 DieHorribly(); 1606 } 1607 1608 /*- 1609 * DieHorribly -- 1610 * Exit without giving a message. 1611 * 1612 * Results: 1613 * None 1614 * 1615 * Side Effects: 1616 * A big one... 1617 */ 1618 void 1619 DieHorribly(void) 1620 { 1621 if (jobsRunning) 1622 Job_AbortAll(); 1623 if (DEBUG(GRAPH2)) 1624 Targ_PrintGraph(2); 1625 Trace_Log(MAKEERROR, 0); 1626 exit(2); /* Not 1, so -q can distinguish error */ 1627 } 1628 1629 /* 1630 * Finish -- 1631 * Called when aborting due to errors in child shell to signal 1632 * abnormal exit. 1633 * 1634 * Results: 1635 * None 1636 * 1637 * Side Effects: 1638 * The program exits 1639 */ 1640 void 1641 Finish(int errors) 1642 /* number of errors encountered in Make_Make */ 1643 { 1644 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1645 } 1646 1647 #ifndef HAVE_EMALLOC 1648 /* 1649 * emalloc -- 1650 * malloc, but die on error. 1651 */ 1652 void * 1653 emalloc(size_t len) 1654 { 1655 void *p; 1656 1657 if ((p = malloc(len)) == NULL) 1658 enomem(); 1659 return(p); 1660 } 1661 1662 /* 1663 * estrdup -- 1664 * strdup, but die on error. 1665 */ 1666 char * 1667 estrdup(const char *str) 1668 { 1669 char *p; 1670 1671 if ((p = strdup(str)) == NULL) 1672 enomem(); 1673 return(p); 1674 } 1675 1676 /* 1677 * erealloc -- 1678 * realloc, but die on error. 1679 */ 1680 void * 1681 erealloc(void *ptr, size_t size) 1682 { 1683 if ((ptr = realloc(ptr, size)) == NULL) 1684 enomem(); 1685 return(ptr); 1686 } 1687 1688 /* 1689 * enomem -- 1690 * die when out of memory. 1691 */ 1692 void 1693 enomem(void) 1694 { 1695 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 1696 exit(2); 1697 } 1698 #endif 1699 1700 /* 1701 * enunlink -- 1702 * Remove a file carefully, avoiding directories. 1703 */ 1704 int 1705 eunlink(const char *file) 1706 { 1707 struct stat st; 1708 1709 if (lstat(file, &st) == -1) 1710 return -1; 1711 1712 if (S_ISDIR(st.st_mode)) { 1713 errno = EISDIR; 1714 return -1; 1715 } 1716 return unlink(file); 1717 } 1718 1719 /* 1720 * execError -- 1721 * Print why exec failed, avoiding stdio. 1722 */ 1723 void 1724 execError(const char *af, const char *av) 1725 { 1726 #ifdef USE_IOVEC 1727 int i = 0; 1728 struct iovec iov[8]; 1729 #define IOADD(s) \ 1730 (void)(iov[i].iov_base = UNCONST(s), \ 1731 iov[i].iov_len = strlen(iov[i].iov_base), \ 1732 i++) 1733 #else 1734 #define IOADD(void)write(2, s, strlen(s)) 1735 #endif 1736 1737 IOADD(progname); 1738 IOADD(": "); 1739 IOADD(af); 1740 IOADD("("); 1741 IOADD(av); 1742 IOADD(") failed ("); 1743 IOADD(strerror(errno)); 1744 IOADD(")\n"); 1745 1746 #ifdef USE_IOVEC 1747 (void)writev(2, iov, 8); 1748 #endif 1749 } 1750 1751 /* 1752 * usage -- 1753 * exit with usage message 1754 */ 1755 static void 1756 usage(void) 1757 { 1758 (void)fprintf(stderr, 1759 "usage: %s [-BeikNnqrstWX] [-D variable] [-d flags] [-f makefile]\n\ 1760 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1761 [-V variable] [variable=value] [target ...]\n", progname); 1762 exit(2); 1763 } 1764 1765 1766 int 1767 PrintAddr(ClientData a, ClientData b) 1768 { 1769 printf("%lx ", (unsigned long) a); 1770 return b ? 0 : 0; 1771 } 1772 1773 1774 1775 void 1776 PrintOnError(const char *s) 1777 { 1778 char tmp[64]; 1779 char *cp; 1780 1781 if (s) 1782 printf("%s", s); 1783 1784 printf("\n%s: stopped in %s\n", progname, curdir); 1785 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1786 sizeof(tmp) - 1); 1787 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1788 if (cp) { 1789 if (*cp) 1790 printf("%s", cp); 1791 free(cp); 1792 } 1793 } 1794 1795 void 1796 Main_ExportMAKEFLAGS(Boolean first) 1797 { 1798 static int once = 1; 1799 char tmp[64]; 1800 char *s; 1801 1802 if (once != first) 1803 return; 1804 once = 0; 1805 1806 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1807 sizeof(tmp)); 1808 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1809 if (s && *s) { 1810 #ifdef POSIX 1811 setenv("MAKEFLAGS", s, 1); 1812 #else 1813 setenv("MAKE", s, 1); 1814 #endif 1815 } 1816 } 1817
Indexes created Tue Sep 23 02:09:52 GMT 2025