main.c revision 1.142
1 /* $NetBSD: main.c,v 1.142 2007/10/01 22:14:10 sjg 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 1.142 2007/10/01 22:14:10 sjg 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 1.142 2007/10/01 22:14:10 sjg 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 * Set some other useful macros 870 */ 871 { 872 char tmp[64]; 873 874 snprintf(tmp, sizeof(tmp), "%u", getpid()); 875 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 876 snprintf(tmp, sizeof(tmp), "%u", getppid()); 877 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 878 } 879 Job_SetPrefix(); 880 881 /* 882 * First snag any flags out of the MAKE environment variable. 883 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 884 * in a different format). 885 */ 886 #ifdef POSIX 887 Main_ParseArgLine(getenv("MAKEFLAGS")); 888 #else 889 Main_ParseArgLine(getenv("MAKE")); 890 #endif 891 892 MainParseArgs(argc, argv); 893 894 /* 895 * Be compatible if user did not specify -j and did not explicitly 896 * turned compatibility on 897 */ 898 if (!compatMake && !forceJobs) { 899 compatMake = TRUE; 900 } 901 902 /* 903 * Initialize archive, target and suffix modules in preparation for 904 * parsing the makefile(s) 905 */ 906 Arch_Init(); 907 Targ_Init(); 908 Suff_Init(); 909 Trace_Init(tracefile); 910 911 DEFAULT = NILGNODE; 912 (void)time(&now); 913 914 Trace_Log(MAKESTART, NULL); 915 916 /* 917 * Set up the .TARGETS variable to contain the list of targets to be 918 * created. If none specified, make the variable empty -- the parser 919 * will fill the thing in with the default or .MAIN target. 920 */ 921 if (!Lst_IsEmpty(create)) { 922 LstNode ln; 923 924 for (ln = Lst_First(create); ln != NILLNODE; 925 ln = Lst_Succ(ln)) { 926 char *name = (char *)Lst_Datum(ln); 927 928 Var_Append(".TARGETS", name, VAR_GLOBAL); 929 } 930 } else 931 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 932 933 934 /* 935 * If no user-supplied system path was given (through the -m option) 936 * add the directories from the DEFSYSPATH (more than one may be given 937 * as dir1:...:dirn) to the system include path. 938 */ 939 if (syspath == NULL || *syspath == '\0') 940 syspath = defsyspath; 941 else 942 syspath = strdup(syspath); 943 944 for (start = syspath; *start != '\0'; start = cp) { 945 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 946 continue; 947 if (*cp == ':') { 948 *cp++ = '\0'; 949 } 950 /* look for magic parent directory search string */ 951 if (strncmp(".../", start, 4) != 0) { 952 (void)Dir_AddDir(defIncPath, start); 953 } else { 954 if (Dir_FindHereOrAbove(curdir, start+4, 955 found_path, sizeof(found_path))) { 956 (void)Dir_AddDir(defIncPath, found_path); 957 } 958 } 959 } 960 if (syspath != defsyspath) 961 free(syspath); 962 963 /* 964 * Read in the built-in rules first, followed by the specified 965 * makefile, if it was (makefile != NULL), or the default 966 * makefile and Makefile, in that order, if it wasn't. 967 */ 968 if (!noBuiltins) { 969 LstNode ln; 970 971 sysMkPath = Lst_Init(FALSE); 972 Dir_Expand(_PATH_DEFSYSMK, 973 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 974 sysMkPath); 975 if (Lst_IsEmpty(sysMkPath)) 976 Fatal("%s: no system rules (%s).", progname, 977 _PATH_DEFSYSMK); 978 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 979 if (ln == NILLNODE) 980 Fatal("%s: cannot open %s.", progname, 981 (char *)Lst_Datum(ln)); 982 } 983 984 if (!Lst_IsEmpty(makefiles)) { 985 LstNode ln; 986 987 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 988 if (ln != NILLNODE) 989 Fatal("%s: cannot open %s.", progname, 990 (char *)Lst_Datum(ln)); 991 } else if (ReadMakefile(UNCONST("makefile"), NULL) != 0) 992 (void)ReadMakefile(UNCONST("Makefile"), NULL); 993 994 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 995 if (!noBuiltins || !printVars) 996 (void)ReadMakefile(UNCONST(".depend"), NULL); 997 998 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 999 if (p1) 1000 free(p1); 1001 1002 if (!compatMake) 1003 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1004 if (DEBUG(JOB)) 1005 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1006 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1007 1008 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1009 1010 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1011 1012 1013 /* 1014 * For compatibility, look at the directories in the VPATH variable 1015 * and add them to the search path, if the variable is defined. The 1016 * variable's value is in the same format as the PATH envariable, i.e. 1017 * <directory>:<directory>:<directory>... 1018 */ 1019 if (Var_Exists("VPATH", VAR_CMD)) { 1020 char *vpath, savec; 1021 /* 1022 * GCC stores string constants in read-only memory, but 1023 * Var_Subst will want to write this thing, so store it 1024 * in an array 1025 */ 1026 static char VPATH[] = "${VPATH}"; 1027 1028 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1029 path = vpath; 1030 do { 1031 /* skip to end of directory */ 1032 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1033 continue; 1034 /* Save terminator character so know when to stop */ 1035 savec = *cp; 1036 *cp = '\0'; 1037 /* Add directory to search path */ 1038 (void)Dir_AddDir(dirSearchPath, path); 1039 *cp = savec; 1040 path = cp + 1; 1041 } while (savec == ':'); 1042 free(vpath); 1043 } 1044 1045 /* 1046 * Now that all search paths have been read for suffixes et al, it's 1047 * time to add the default search path to their lists... 1048 */ 1049 Suff_DoPaths(); 1050 1051 /* 1052 * Propagate attributes through :: dependency lists. 1053 */ 1054 Targ_Propagate(); 1055 1056 /* print the initial graph, if the user requested it */ 1057 if (DEBUG(GRAPH1)) 1058 Targ_PrintGraph(1); 1059 1060 /* print the values of any variables requested by the user */ 1061 if (printVars) { 1062 LstNode ln; 1063 1064 for (ln = Lst_First(variables); ln != NILLNODE; 1065 ln = Lst_Succ(ln)) { 1066 char *var = (char *)Lst_Datum(ln); 1067 char *value; 1068 1069 if (strchr(var, '$')) { 1070 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1071 } else { 1072 value = Var_Value(var, VAR_GLOBAL, &p1); 1073 } 1074 printf("%s\n", value ? value : ""); 1075 if (p1) 1076 free(p1); 1077 } 1078 } else { 1079 /* 1080 * Have now read the entire graph and need to make a list of 1081 * targets to create. If none was given on the command line, 1082 * we consult the parsing module to find the main target(s) 1083 * to create. 1084 */ 1085 if (Lst_IsEmpty(create)) 1086 targs = Parse_MainName(); 1087 else 1088 targs = Targ_FindList(create, TARG_CREATE); 1089 1090 if (!compatMake) { 1091 /* 1092 * Initialize job module before traversing the graph 1093 * now that any .BEGIN and .END targets have been read. 1094 * This is done only if the -q flag wasn't given 1095 * (to prevent the .BEGIN from being executed should 1096 * it exist). 1097 */ 1098 if (!queryFlag) { 1099 Job_Init(); 1100 jobsRunning = TRUE; 1101 } 1102 1103 /* Traverse the graph, checking on all the targets */ 1104 outOfDate = Make_Run(targs); 1105 } else { 1106 /* 1107 * Compat_Init will take care of creating all the 1108 * targets as well as initializing the module. 1109 */ 1110 Compat_Run(targs); 1111 } 1112 } 1113 1114 #ifdef CLEANUP 1115 Lst_Destroy(targs, NOFREE); 1116 Lst_Destroy(variables, NOFREE); 1117 Lst_Destroy(makefiles, NOFREE); 1118 Lst_Destroy(create, (FreeProc *)free); 1119 #endif 1120 1121 /* print the graph now it's been processed if the user requested it */ 1122 if (DEBUG(GRAPH2)) 1123 Targ_PrintGraph(2); 1124 1125 Trace_Log(MAKEEND, 0); 1126 1127 Suff_End(); 1128 Targ_End(); 1129 Arch_End(); 1130 Var_End(); 1131 Parse_End(); 1132 Dir_End(); 1133 Job_End(); 1134 Trace_End(); 1135 1136 return outOfDate ? 1 : 0; 1137 } 1138 1139 /*- 1140 * ReadMakefile -- 1141 * Open and parse the given makefile. 1142 * 1143 * Results: 1144 * 0 if ok. -1 if couldn't open file. 1145 * 1146 * Side Effects: 1147 * lots 1148 */ 1149 static int 1150 ReadMakefile(ClientData p, ClientData q __unused) 1151 { 1152 char *fname = p; /* makefile to read */ 1153 int fd; 1154 size_t len = MAXPATHLEN; 1155 char *name, *path = emalloc(len); 1156 int setMAKEFILE; 1157 1158 if (!strcmp(fname, "-")) { 1159 Parse_File("(stdin)", dup(fileno(stdin))); 1160 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1161 } else { 1162 setMAKEFILE = strcmp(fname, ".depend"); 1163 1164 /* if we've chdir'd, rebuild the path name */ 1165 if (strcmp(curdir, objdir) && *fname != '/') { 1166 size_t plen = strlen(curdir) + strlen(fname) + 2; 1167 if (len < plen) 1168 path = erealloc(path, len = 2 * plen); 1169 1170 (void)snprintf(path, len, "%s/%s", curdir, fname); 1171 fd = open(path, O_RDONLY); 1172 if (fd != -1) { 1173 fname = path; 1174 goto found; 1175 } 1176 1177 /* If curdir failed, try objdir (ala .depend) */ 1178 plen = strlen(objdir) + strlen(fname) + 2; 1179 if (len < plen) 1180 path = erealloc(path, len = 2 * plen); 1181 (void)snprintf(path, len, "%s/%s", objdir, fname); 1182 fd = open(path, O_RDONLY); 1183 if (fd != -1) { 1184 fname = path; 1185 goto found; 1186 } 1187 } else { 1188 fd = open(fname, O_RDONLY); 1189 if (fd != -1) 1190 goto found; 1191 } 1192 /* look in -I and system include directories. */ 1193 name = Dir_FindFile(fname, parseIncPath); 1194 if (!name) 1195 name = Dir_FindFile(fname, 1196 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1197 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1198 if (name) 1199 free(name); 1200 free(path); 1201 return(-1); 1202 } 1203 fname = name; 1204 /* 1205 * set the MAKEFILE variable desired by System V fans -- the 1206 * placement of the setting here means it gets set to the last 1207 * makefile specified, as it is set by SysV make. 1208 */ 1209 found: 1210 if (setMAKEFILE) 1211 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1212 Parse_File(fname, fd); 1213 } 1214 free(path); 1215 return(0); 1216 } 1217 1218 1219 /* 1220 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1221 * in situations that would not arrise with ./obj (links or not). 1222 * This tends to break things like: 1223 * 1224 * build: 1225 * ${MAKE} includes 1226 * 1227 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1228 * opposed to an argument) in a command line and if so returns 1229 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1230 * the Makefile hold true. 1231 * 1232 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1233 * 1234 * The chdir() only happens in the child process, and does nothing if 1235 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1236 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1237 * do nothing - to ensure historic semantics can be retained. 1238 */ 1239 static int Check_Cwd_Off = 0; 1240 1241 static char * 1242 Check_Cwd_av(int ac, char **av, int copy) 1243 { 1244 static char *make[4]; 1245 static char *cur_dir = NULL; 1246 char **mp; 1247 char *cp; 1248 int is_cmd, next_cmd; 1249 int i; 1250 int n; 1251 1252 if (Check_Cwd_Off) 1253 return NULL; 1254 1255 if (make[0] == NULL) { 1256 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1257 Check_Cwd_Off = 1; 1258 return NULL; 1259 } 1260 1261 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1262 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1263 make[0] = make[1]; 1264 make[1] = NULL; 1265 } else 1266 ++make[0]; 1267 make[2] = NULL; 1268 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1269 } 1270 if (ac == 0 || av == NULL) 1271 return NULL; /* initialization only */ 1272 1273 if (getenv("MAKEOBJDIR") == NULL && 1274 getenv("MAKEOBJDIRPREFIX") == NULL) 1275 return NULL; 1276 1277 1278 next_cmd = 1; 1279 for (i = 0; i < ac; ++i) { 1280 is_cmd = next_cmd; 1281 1282 n = strlen(av[i]); 1283 cp = &(av[i])[n - 1]; 1284 if (strspn(av[i], "|&;") == (size_t)n) { 1285 next_cmd = 1; 1286 continue; 1287 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1288 next_cmd = 1; 1289 if (copy) { 1290 do { 1291 *cp-- = '\0'; 1292 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1293 *cp == ')' || *cp == '}') ; 1294 } else { 1295 /* 1296 * XXX this should not happen. 1297 */ 1298 fprintf(stderr, "WARNING: raw arg ends in shell meta '%s'\n", 1299 av[i]); 1300 } 1301 } else 1302 next_cmd = 0; 1303 1304 cp = av[i]; 1305 if (*cp == ';' || *cp == '&' || *cp == '|') 1306 is_cmd = 1; 1307 1308 #ifdef check_cwd_debug 1309 fprintf(stderr, "av[%d] == %s '%s'", 1310 i, (is_cmd) ? "cmd" : "arg", av[i]); 1311 #endif 1312 if (is_cmd != 0) { 1313 if (*cp == '(' || *cp == '{' || 1314 *cp == ';' || *cp == '&' || *cp == '|') { 1315 do { 1316 ++cp; 1317 } while (*cp == '(' || *cp == '{' || 1318 *cp == ';' || *cp == '&' || *cp == '|'); 1319 if (*cp == '\0') { 1320 next_cmd = 1; 1321 continue; 1322 } 1323 } 1324 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1325 #ifdef check_cwd_debug 1326 fprintf(stderr, " == cd, done.\n"); 1327 #endif 1328 return NULL; 1329 } 1330 for (mp = make; *mp != NULL; ++mp) { 1331 n = strlen(*mp); 1332 if (strcmp(cp, *mp) == 0) { 1333 #ifdef check_cwd_debug 1334 fprintf(stderr, " %s == '%s', chdir(%s)\n", 1335 cp, *mp, cur_dir); 1336 #endif 1337 return cur_dir; 1338 } 1339 } 1340 } 1341 #ifdef check_cwd_debug 1342 fprintf(stderr, "\n"); 1343 #endif 1344 } 1345 return NULL; 1346 } 1347 1348 char * 1349 Check_Cwd_Cmd(const char *cmd) 1350 { 1351 char *cp, *bp; 1352 char **av; 1353 int ac; 1354 1355 if (Check_Cwd_Off) 1356 return NULL; 1357 1358 if (cmd) { 1359 av = brk_string(cmd, &ac, TRUE, &bp); 1360 #ifdef check_cwd_debug 1361 fprintf(stderr, "splitting: '%s' -> %d words\n", 1362 cmd, ac); 1363 #endif 1364 } else { 1365 ac = 0; 1366 av = NULL; 1367 bp = NULL; 1368 } 1369 cp = Check_Cwd_av(ac, av, 1); 1370 if (bp) 1371 free(bp); 1372 if (av) 1373 free(av); 1374 return cp; 1375 } 1376 1377 void 1378 Check_Cwd(const char **argv) 1379 { 1380 char *cp; 1381 int ac; 1382 1383 if (Check_Cwd_Off) 1384 return; 1385 1386 for (ac = 0; argv[ac] != NULL; ++ac) 1387 /* NOTHING */; 1388 if (ac == 3 && *argv[1] == '-') { 1389 cp = Check_Cwd_Cmd(argv[2]); 1390 } else { 1391 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1392 } 1393 if (cp) { 1394 chdir(cp); 1395 } 1396 } 1397 1398 /*- 1399 * Cmd_Exec -- 1400 * Execute the command in cmd, and return the output of that command 1401 * in a string. 1402 * 1403 * Results: 1404 * A string containing the output of the command, or the empty string 1405 * If errnum is not NULL, it contains the reason for the command failure 1406 * 1407 * Side Effects: 1408 * The string must be freed by the caller. 1409 */ 1410 char * 1411 Cmd_Exec(const char *cmd, const char **errnum) 1412 { 1413 const char *args[4]; /* Args for invoking the shell */ 1414 int fds[2]; /* Pipe streams */ 1415 int cpid; /* Child PID */ 1416 int pid; /* PID from wait() */ 1417 char *res; /* result */ 1418 int status; /* command exit status */ 1419 Buffer buf; /* buffer to store the result */ 1420 char *cp; 1421 int cc; 1422 1423 1424 *errnum = NULL; 1425 1426 if (!shellName) 1427 Shell_Init(); 1428 /* 1429 * Set up arguments for shell 1430 */ 1431 args[0] = shellName; 1432 args[1] = "-c"; 1433 args[2] = cmd; 1434 args[3] = NULL; 1435 1436 /* 1437 * Open a pipe for fetching its output 1438 */ 1439 if (pipe(fds) == -1) { 1440 *errnum = "Couldn't create pipe for \"%s\""; 1441 goto bad; 1442 } 1443 1444 /* 1445 * Fork 1446 */ 1447 switch (cpid = vfork()) { 1448 case 0: 1449 /* 1450 * Close input side of pipe 1451 */ 1452 (void)close(fds[0]); 1453 1454 /* 1455 * Duplicate the output stream to the shell's output, then 1456 * shut the extra thing down. Note we don't fetch the error 1457 * stream...why not? Why? 1458 */ 1459 (void)dup2(fds[1], 1); 1460 (void)close(fds[1]); 1461 1462 (void)execv(shellPath, UNCONST(args)); 1463 _exit(1); 1464 /*NOTREACHED*/ 1465 1466 case -1: 1467 *errnum = "Couldn't exec \"%s\""; 1468 goto bad; 1469 1470 default: 1471 /* 1472 * No need for the writing half 1473 */ 1474 (void)close(fds[1]); 1475 1476 buf = Buf_Init(0); 1477 1478 do { 1479 char result[BUFSIZ]; 1480 cc = read(fds[0], result, sizeof(result)); 1481 if (cc > 0) 1482 Buf_AddBytes(buf, cc, (Byte *)result); 1483 } 1484 while (cc > 0 || (cc == -1 && errno == EINTR)); 1485 1486 /* 1487 * Close the input side of the pipe. 1488 */ 1489 (void)close(fds[0]); 1490 1491 /* 1492 * Wait for the process to exit. 1493 */ 1494 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) 1495 continue; 1496 1497 res = (char *)Buf_GetAll(buf, &cc); 1498 Buf_Destroy(buf, FALSE); 1499 1500 if (cc == 0) 1501 *errnum = "Couldn't read shell's output for \"%s\""; 1502 1503 if (status) 1504 *errnum = "\"%s\" returned non-zero status"; 1505 1506 /* 1507 * Null-terminate the result, convert newlines to spaces and 1508 * install it in the variable. 1509 */ 1510 res[cc] = '\0'; 1511 cp = &res[cc]; 1512 1513 if (cc > 0 && *--cp == '\n') { 1514 /* 1515 * A final newline is just stripped 1516 */ 1517 *cp-- = '\0'; 1518 } 1519 while (cp >= res) { 1520 if (*cp == '\n') { 1521 *cp = ' '; 1522 } 1523 cp--; 1524 } 1525 break; 1526 } 1527 return res; 1528 bad: 1529 res = emalloc(1); 1530 *res = '\0'; 1531 return res; 1532 } 1533 1534 /*- 1535 * Error -- 1536 * Print an error message given its format. 1537 * 1538 * Results: 1539 * None. 1540 * 1541 * Side Effects: 1542 * The message is printed. 1543 */ 1544 /* VARARGS */ 1545 void 1546 Error(const char *fmt, ...) 1547 { 1548 va_list ap; 1549 1550 va_start(ap, fmt); 1551 fprintf(stderr, "%s: ", progname); 1552 (void)vfprintf(stderr, fmt, ap); 1553 va_end(ap); 1554 (void)fprintf(stderr, "\n"); 1555 (void)fflush(stderr); 1556 } 1557 1558 /*- 1559 * Fatal -- 1560 * Produce a Fatal error message. If jobs are running, waits for them 1561 * to finish. 1562 * 1563 * Results: 1564 * None 1565 * 1566 * Side Effects: 1567 * The program exits 1568 */ 1569 /* VARARGS */ 1570 void 1571 Fatal(const char *fmt, ...) 1572 { 1573 va_list ap; 1574 1575 va_start(ap, fmt); 1576 if (jobsRunning) 1577 Job_Wait(); 1578 1579 (void)vfprintf(stderr, fmt, ap); 1580 va_end(ap); 1581 (void)fprintf(stderr, "\n"); 1582 (void)fflush(stderr); 1583 1584 PrintOnError(NULL); 1585 1586 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1587 Targ_PrintGraph(2); 1588 Trace_Log(MAKEERROR, 0); 1589 exit(2); /* Not 1 so -q can distinguish error */ 1590 } 1591 1592 /* 1593 * Punt -- 1594 * Major exception once jobs are being created. Kills all jobs, prints 1595 * a message and exits. 1596 * 1597 * Results: 1598 * None 1599 * 1600 * Side Effects: 1601 * All children are killed indiscriminately and the program Lib_Exits 1602 */ 1603 /* VARARGS */ 1604 void 1605 Punt(const char *fmt, ...) 1606 { 1607 va_list ap; 1608 1609 va_start(ap, fmt); 1610 (void)fprintf(stderr, "%s: ", progname); 1611 (void)vfprintf(stderr, fmt, ap); 1612 va_end(ap); 1613 (void)fprintf(stderr, "\n"); 1614 (void)fflush(stderr); 1615 1616 PrintOnError(NULL); 1617 1618 DieHorribly(); 1619 } 1620 1621 /*- 1622 * DieHorribly -- 1623 * Exit without giving a message. 1624 * 1625 * Results: 1626 * None 1627 * 1628 * Side Effects: 1629 * A big one... 1630 */ 1631 void 1632 DieHorribly(void) 1633 { 1634 if (jobsRunning) 1635 Job_AbortAll(); 1636 if (DEBUG(GRAPH2)) 1637 Targ_PrintGraph(2); 1638 Trace_Log(MAKEERROR, 0); 1639 exit(2); /* Not 1, so -q can distinguish error */ 1640 } 1641 1642 /* 1643 * Finish -- 1644 * Called when aborting due to errors in child shell to signal 1645 * abnormal exit. 1646 * 1647 * Results: 1648 * None 1649 * 1650 * Side Effects: 1651 * The program exits 1652 */ 1653 void 1654 Finish(int errors) 1655 /* number of errors encountered in Make_Make */ 1656 { 1657 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1658 } 1659 1660 #ifndef HAVE_EMALLOC 1661 /* 1662 * emalloc -- 1663 * malloc, but die on error. 1664 */ 1665 void * 1666 emalloc(size_t len) 1667 { 1668 void *p; 1669 1670 if ((p = malloc(len)) == NULL) 1671 enomem(); 1672 return(p); 1673 } 1674 1675 /* 1676 * estrdup -- 1677 * strdup, but die on error. 1678 */ 1679 char * 1680 estrdup(const char *str) 1681 { 1682 char *p; 1683 1684 if ((p = strdup(str)) == NULL) 1685 enomem(); 1686 return(p); 1687 } 1688 1689 /* 1690 * erealloc -- 1691 * realloc, but die on error. 1692 */ 1693 void * 1694 erealloc(void *ptr, size_t size) 1695 { 1696 if ((ptr = realloc(ptr, size)) == NULL) 1697 enomem(); 1698 return(ptr); 1699 } 1700 1701 /* 1702 * enomem -- 1703 * die when out of memory. 1704 */ 1705 void 1706 enomem(void) 1707 { 1708 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 1709 exit(2); 1710 } 1711 #endif 1712 1713 /* 1714 * enunlink -- 1715 * Remove a file carefully, avoiding directories. 1716 */ 1717 int 1718 eunlink(const char *file) 1719 { 1720 struct stat st; 1721 1722 if (lstat(file, &st) == -1) 1723 return -1; 1724 1725 if (S_ISDIR(st.st_mode)) { 1726 errno = EISDIR; 1727 return -1; 1728 } 1729 return unlink(file); 1730 } 1731 1732 /* 1733 * execError -- 1734 * Print why exec failed, avoiding stdio. 1735 */ 1736 void 1737 execError(const char *af, const char *av) 1738 { 1739 #ifdef USE_IOVEC 1740 int i = 0; 1741 struct iovec iov[8]; 1742 #define IOADD(s) \ 1743 (void)(iov[i].iov_base = UNCONST(s), \ 1744 iov[i].iov_len = strlen(iov[i].iov_base), \ 1745 i++) 1746 #else 1747 #define IOADD(void)write(2, s, strlen(s)) 1748 #endif 1749 1750 IOADD(progname); 1751 IOADD(": "); 1752 IOADD(af); 1753 IOADD("("); 1754 IOADD(av); 1755 IOADD(") failed ("); 1756 IOADD(strerror(errno)); 1757 IOADD(")\n"); 1758 1759 #ifdef USE_IOVEC 1760 (void)writev(2, iov, 8); 1761 #endif 1762 } 1763 1764 /* 1765 * usage -- 1766 * exit with usage message 1767 */ 1768 static void 1769 usage(void) 1770 { 1771 (void)fprintf(stderr, 1772 "usage: %s [-BeikNnqrstWX] [-D variable] [-d flags] [-f makefile]\n\ 1773 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1774 [-V variable] [variable=value] [target ...]\n", progname); 1775 exit(2); 1776 } 1777 1778 1779 int 1780 PrintAddr(ClientData a, ClientData b) 1781 { 1782 printf("%lx ", (unsigned long) a); 1783 return b ? 0 : 0; 1784 } 1785 1786 1787 1788 void 1789 PrintOnError(const char *s) 1790 { 1791 char tmp[64]; 1792 char *cp; 1793 1794 if (s) 1795 printf("%s", s); 1796 1797 printf("\n%s: stopped in %s\n", progname, curdir); 1798 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1799 sizeof(tmp) - 1); 1800 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1801 if (cp) { 1802 if (*cp) 1803 printf("%s", cp); 1804 free(cp); 1805 } 1806 } 1807 1808 void 1809 Main_ExportMAKEFLAGS(Boolean first) 1810 { 1811 static int once = 1; 1812 char tmp[64]; 1813 char *s; 1814 1815 if (once != first) 1816 return; 1817 once = 0; 1818 1819 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1820 sizeof(tmp)); 1821 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1822 if (s && *s) { 1823 #ifdef POSIX 1824 setenv("MAKEFLAGS", s, 1); 1825 #else 1826 setenv("MAKE", s, 1); 1827 #endif 1828 } 1829 } 1830
Indexes created Tue Sep 23 02:09:52 GMT 2025