1 /* $NetBSD: main.c,v 1.150 2008/07/21 14:19:24 lukem 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 1.150 2008/07/21 14:19:24 lukem Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.150 2008/07/21 14:19:24 lukem 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 Boolean doing_depend; /* Set while reading .depend */ 176 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 177 static const char * tracefile; 178 static char * Check_Cwd_av(int, char **, int); 179 static void MainParseArgs(int, char **); 180 static int ReadMakefile(ClientData, ClientData); 181 static void usage(void); 182 183 static char curdir[MAXPATHLEN + 1]; /* startup directory */ 184 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 185 char *progname; /* the program name */ 186 187 Boolean forceJobs = FALSE; 188 189 extern Lst parseIncPath; 190 191 static void 192 parse_debug_options(const char *argvalue) 193 { 194 const char *modules; 195 const char *mode; 196 char *fname; 197 int len; 198 199 for (modules = argvalue; *modules; ++modules) { 200 switch (*modules) { 201 case 'A': 202 debug = ~0; 203 break; 204 case 'a': 205 debug |= DEBUG_ARCH; 206 break; 207 case 'c': 208 debug |= DEBUG_COND; 209 break; 210 case 'd': 211 debug |= DEBUG_DIR; 212 break; 213 case 'e': 214 debug |= DEBUG_ERROR; 215 break; 216 case 'f': 217 debug |= DEBUG_FOR; 218 break; 219 case 'g': 220 if (modules[1] == '1') { 221 debug |= DEBUG_GRAPH1; 222 ++modules; 223 } 224 else if (modules[1] == '2') { 225 debug |= DEBUG_GRAPH2; 226 ++modules; 227 } 228 else if (modules[1] == '3') { 229 debug |= DEBUG_GRAPH3; 230 ++modules; 231 } 232 break; 233 case 'j': 234 debug |= DEBUG_JOB; 235 break; 236 case 'l': 237 debug |= DEBUG_LOUD; 238 break; 239 case 'm': 240 debug |= DEBUG_MAKE; 241 break; 242 case 'n': 243 debug |= DEBUG_SCRIPT; 244 break; 245 case 'p': 246 debug |= DEBUG_PARSE; 247 break; 248 case 's': 249 debug |= DEBUG_SUFF; 250 break; 251 case 't': 252 debug |= DEBUG_TARG; 253 break; 254 case 'v': 255 debug |= DEBUG_VAR; 256 break; 257 case 'x': 258 debug |= DEBUG_SHELL; 259 break; 260 case 'F': 261 if (debug_file != stdout && debug_file != stderr) 262 fclose(debug_file); 263 if (*++modules == '+') 264 mode = "a"; 265 else { 266 if (!strcmp(modules, "stdout")) { 267 debug_file = stdout; 268 return; 269 } 270 if (!strcmp(modules, "stderr")) { 271 debug_file = stderr; 272 return; 273 } 274 mode = "w"; 275 } 276 len = strlen(modules); 277 fname = malloc(len + 20); 278 memcpy(fname, modules, len + 1); 279 /* Let the filename be modified by the pid */ 280 if (strcmp(fname + len - 3, ".%d") == 0) 281 snprintf(fname + len - 2, 20, "%d", getpid()); 282 debug_file = fopen(fname, mode); 283 if (!debug_file) { 284 fprintf(stderr, "Cannot open debug file %s\n", 285 fname); 286 usage(); 287 } 288 free(fname); 289 /* Have this non-buffered */ 290 setbuf(debug_file, NULL); 291 return; 292 default: 293 (void)fprintf(stderr, 294 "%s: illegal argument to d option -- %c\n", 295 progname, *modules); 296 usage(); 297 } 298 } 299 } 300 301 /*- 302 * MainParseArgs -- 303 * Parse a given argument vector. Called from main() and from 304 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 305 * 306 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 307 * 308 * Results: 309 * None 310 * 311 * Side Effects: 312 * Various global and local flags will be set depending on the flags 313 * given 314 */ 315 static void 316 MainParseArgs(int argc, char **argv) 317 { 318 char *p; 319 int c = '?'; 320 int arginc; 321 char *argvalue; 322 const char *getopt_def; 323 char *optscan; 324 Boolean inOption, dashDash = FALSE; 325 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 326 327 #define OPTFLAGS "BD:I:J:NST:V:WXd:ef:ij:km:nqrst" 328 /* Can't actually use getopt(3) because rescanning is not portable */ 329 330 getopt_def = OPTFLAGS; 331 rearg: 332 inOption = FALSE; 333 optscan = NULL; 334 while(argc > 1) { 335 char *getopt_spec; 336 if(!inOption) 337 optscan = argv[1]; 338 c = *optscan++; 339 arginc = 0; 340 if(inOption) { 341 if(c == '\0') { 342 ++argv; 343 --argc; 344 inOption = FALSE; 345 continue; 346 } 347 } else { 348 if (c != '-' || dashDash) 349 break; 350 inOption = TRUE; 351 c = *optscan++; 352 } 353 /* '-' found at some earlier point */ 354 getopt_spec = strchr(getopt_def, c); 355 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 356 /* -<something> found, and <something> should have an arg */ 357 inOption = FALSE; 358 arginc = 1; 359 argvalue = optscan; 360 if(*argvalue == '\0') { 361 if (argc < 3) 362 goto noarg; 363 argvalue = argv[2]; 364 arginc = 2; 365 } 366 } else { 367 argvalue = NULL; 368 } 369 switch(c) { 370 case '\0': 371 arginc = 1; 372 inOption = FALSE; 373 break; 374 case 'B': 375 compatMake = TRUE; 376 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 377 break; 378 case 'D': 379 if (argvalue == NULL) goto noarg; 380 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 381 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 382 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 383 break; 384 case 'I': 385 if (argvalue == NULL) goto noarg; 386 Parse_AddIncludeDir(argvalue); 387 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 388 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 389 break; 390 case 'J': 391 if (argvalue == NULL) goto noarg; 392 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 393 (void)fprintf(stderr, 394 "%s: internal error -- J option malformed (%s)\n", 395 progname, argvalue); 396 usage(); 397 } 398 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 399 (fcntl(jp_1, F_GETFD, 0) < 0)) { 400 #if 0 401 (void)fprintf(stderr, 402 "%s: ###### warning -- J descriptors were closed!\n", 403 progname); 404 exit(2); 405 #endif 406 jp_0 = -1; 407 jp_1 = -1; 408 compatMake = TRUE; 409 } else { 410 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 411 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 412 jobServer = TRUE; 413 } 414 break; 415 case 'N': 416 noExecute = TRUE; 417 noRecursiveExecute = TRUE; 418 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 419 break; 420 case 'S': 421 keepgoing = FALSE; 422 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 423 break; 424 case 'T': 425 if (argvalue == NULL) goto noarg; 426 tracefile = estrdup(argvalue); 427 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 428 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 429 break; 430 case 'V': 431 if (argvalue == NULL) goto noarg; 432 printVars = TRUE; 433 (void)Lst_AtEnd(variables, argvalue); 434 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 435 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 436 break; 437 case 'W': 438 parseWarnFatal = TRUE; 439 break; 440 case 'X': 441 varNoExportEnv = TRUE; 442 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 443 break; 444 case 'd': 445 if (argvalue == NULL) goto noarg; 446 /* If '-d-opts' don't pass to children */ 447 if (argvalue[0] == '-') 448 argvalue++; 449 else { 450 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 451 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 452 } 453 parse_debug_options(argvalue); 454 break; 455 case 'e': 456 checkEnvFirst = TRUE; 457 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 458 break; 459 case 'f': 460 if (argvalue == NULL) goto noarg; 461 (void)Lst_AtEnd(makefiles, argvalue); 462 break; 463 case 'i': 464 ignoreErrors = TRUE; 465 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 466 break; 467 case 'j': 468 if (argvalue == NULL) goto noarg; 469 forceJobs = TRUE; 470 maxJobs = strtol(argvalue, &p, 0); 471 if (*p != '\0' || maxJobs < 1) { 472 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 473 progname); 474 exit(1); 475 } 476 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 477 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 478 maxJobTokens = maxJobs; 479 break; 480 case 'k': 481 keepgoing = TRUE; 482 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 483 break; 484 case 'm': 485 if (argvalue == NULL) goto noarg; 486 /* look for magic parent directory search string */ 487 if (strncmp(".../", argvalue, 4) == 0) { 488 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 489 found_path, sizeof(found_path))) 490 break; /* nothing doing */ 491 (void)Dir_AddDir(sysIncPath, found_path); 492 493 } else { 494 (void)Dir_AddDir(sysIncPath, argvalue); 495 } 496 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 497 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 498 break; 499 case 'n': 500 noExecute = TRUE; 501 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 502 break; 503 case 'q': 504 queryFlag = TRUE; 505 /* Kind of nonsensical, wot? */ 506 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 507 break; 508 case 'r': 509 noBuiltins = TRUE; 510 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 511 break; 512 case 's': 513 beSilent = TRUE; 514 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 515 break; 516 case 't': 517 touchFlag = TRUE; 518 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 519 break; 520 case '-': 521 dashDash = TRUE; 522 break; 523 default: 524 case '?': 525 usage(); 526 } 527 argv += arginc; 528 argc -= arginc; 529 } 530 531 oldVars = TRUE; 532 533 /* 534 * See if the rest of the arguments are variable assignments and 535 * perform them if so. Else take them to be targets and stuff them 536 * on the end of the "create" list. 537 */ 538 for (; argc > 1; ++argv, --argc) 539 if (Parse_IsVar(argv[1])) { 540 Parse_DoVar(argv[1], VAR_CMD); 541 } else { 542 if (!*argv[1]) 543 Punt("illegal (null) argument."); 544 if (*argv[1] == '-' && !dashDash) 545 goto rearg; 546 (void)Lst_AtEnd(create, estrdup(argv[1])); 547 } 548 549 return; 550 noarg: 551 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 552 progname, c); 553 usage(); 554 } 555 556 /*- 557 * Main_ParseArgLine -- 558 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 559 * is encountered and by main() when reading the .MAKEFLAGS envariable. 560 * Takes a line of arguments and breaks it into its 561 * component words and passes those words and the number of them to the 562 * MainParseArgs function. 563 * The line should have all its leading whitespace removed. 564 * 565 * Input: 566 * line Line to fracture 567 * 568 * Results: 569 * None 570 * 571 * Side Effects: 572 * Only those that come from the various arguments. 573 */ 574 void 575 Main_ParseArgLine(char *line) 576 { 577 char **argv; /* Manufactured argument vector */ 578 int argc; /* Number of arguments in argv */ 579 char *args; /* Space used by the args */ 580 char *buf, *p1; 581 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 582 size_t len; 583 584 if (line == NULL) 585 return; 586 for (; *line == ' '; ++line) 587 continue; 588 if (!*line) 589 return; 590 591 buf = emalloc(len = strlen(line) + strlen(argv0) + 2); 592 (void)snprintf(buf, len, "%s %s", argv0, line); 593 if (p1) 594 free(p1); 595 596 argv = brk_string(buf, &argc, TRUE, &args); 597 free(buf); 598 MainParseArgs(argc, argv); 599 600 free(args); 601 free(argv); 602 } 603 604 Boolean 605 Main_SetObjdir(const char *path) 606 { 607 struct stat sb; 608 char *p = NULL; 609 char buf[MAXPATHLEN + 1]; 610 Boolean rc = FALSE; 611 612 /* expand variable substitutions */ 613 if (strchr(path, '$') != 0) { 614 snprintf(buf, MAXPATHLEN, "%s", path); 615 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 616 } 617 618 if (path[0] != '/') { 619 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 620 path = buf; 621 } 622 623 /* look for the directory and try to chdir there */ 624 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 625 if (chdir(path)) { 626 (void)fprintf(stderr, "make warning: %s: %s.\n", 627 path, strerror(errno)); 628 } else { 629 strncpy(objdir, path, MAXPATHLEN); 630 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 631 setenv("PWD", objdir, 1); 632 Dir_InitDot(); 633 rc = TRUE; 634 } 635 } 636 637 if (p) 638 free(p); 639 return rc; 640 } 641 642 /*- 643 * ReadAllMakefiles -- 644 * wrapper around ReadMakefile() to read all. 645 * 646 * Results: 647 * TRUE if ok, FALSE on error 648 */ 649 static int 650 ReadAllMakefiles(ClientData p, ClientData q) 651 { 652 return (ReadMakefile(p, q) == 0); 653 } 654 655 /*- 656 * main -- 657 * The main function, for obvious reasons. Initializes variables 658 * and a few modules, then parses the arguments give it in the 659 * environment and on the command line. Reads the system makefile 660 * followed by either Makefile, makefile or the file given by the 661 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 662 * flags it has received by then uses either the Make or the Compat 663 * module to create the initial list of targets. 664 * 665 * Results: 666 * If -q was given, exits -1 if anything was out-of-date. Else it exits 667 * 0. 668 * 669 * Side Effects: 670 * The program exits when done. Targets are created. etc. etc. etc. 671 */ 672 int 673 main(int argc, char **argv) 674 { 675 Lst targs; /* target nodes to create -- passed to Make_Init */ 676 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 677 struct stat sb, sa; 678 char *p1, *path, *pwd; 679 char mdpath[MAXPATHLEN]; 680 char *machine = getenv("MACHINE"); 681 const char *machine_arch = getenv("MACHINE_ARCH"); 682 char *syspath = getenv("MAKESYSPATH"); 683 Lst sysMkPath; /* Path of sys.mk */ 684 char *cp = NULL, *start; 685 /* avoid faults on read-only strings */ 686 static char defsyspath[] = _PATH_DEFSYSPATH; 687 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 688 struct timeval rightnow; /* to initialize random seed */ 689 #ifdef MAKE_NATIVE 690 struct utsname utsname; 691 #endif 692 693 /* default to writing debug to stdout */ 694 debug_file = stdout; 695 696 /* 697 * Set the seed to produce a different random sequences 698 * on each program execution. 699 */ 700 gettimeofday(&rightnow, NULL); 701 srandom(rightnow.tv_sec + rightnow.tv_usec); 702 703 if ((progname = strrchr(argv[0], '/')) != NULL) 704 progname++; 705 else 706 progname = argv[0]; 707 #ifdef RLIMIT_NOFILE 708 /* 709 * get rid of resource limit on file descriptors 710 */ 711 { 712 struct rlimit rl; 713 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 714 rl.rlim_cur != rl.rlim_max) { 715 rl.rlim_cur = rl.rlim_max; 716 (void)setrlimit(RLIMIT_NOFILE, &rl); 717 } 718 } 719 #endif 720 /* 721 * Find where we are and take care of PWD for the automounter... 722 * All this code is so that we know where we are when we start up 723 * on a different machine with pmake. 724 */ 725 if (getcwd(curdir, MAXPATHLEN) == NULL) { 726 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 727 exit(2); 728 } 729 730 if (stat(curdir, &sa) == -1) { 731 (void)fprintf(stderr, "%s: %s: %s.\n", 732 progname, curdir, strerror(errno)); 733 exit(2); 734 } 735 736 /* 737 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 738 * since the value of curdir can very depending on how we got 739 * here. Ie sitting at a shell prompt (shell that provides $PWD) 740 * or via subdir.mk in which case its likely a shell which does 741 * not provide it. 742 * So, to stop it breaking this case only, we ignore PWD if 743 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 744 */ 745 if ((pwd = getenv("PWD")) != NULL && getenv("MAKEOBJDIRPREFIX") == NULL) { 746 const char *makeobjdir = getenv("MAKEOBJDIR"); 747 748 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 749 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 750 sa.st_dev == sb.st_dev) 751 (void)strncpy(curdir, pwd, MAXPATHLEN); 752 } 753 } 754 755 /* 756 * Get the name of this type of MACHINE from utsname 757 * so we can share an executable for similar machines. 758 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 759 * 760 * Note that both MACHINE and MACHINE_ARCH are decided at 761 * run-time. 762 */ 763 if (!machine) { 764 #ifdef MAKE_NATIVE 765 if (uname(&utsname) == -1) { 766 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 767 strerror(errno)); 768 exit(2); 769 } 770 machine = utsname.machine; 771 #else 772 #ifdef MAKE_MACHINE 773 machine = MAKE_MACHINE; 774 #else 775 machine = "unknown"; 776 #endif 777 #endif 778 } 779 780 if (!machine_arch) { 781 #ifndef MACHINE_ARCH 782 #ifdef MAKE_MACHINE_ARCH 783 machine_arch = MAKE_MACHINE_ARCH; 784 #else 785 machine_arch = "unknown"; 786 #endif 787 #else 788 machine_arch = MACHINE_ARCH; 789 #endif 790 } 791 792 /* 793 * Just in case MAKEOBJDIR wants us to do something tricky. 794 */ 795 Var_Init(); /* Initialize the lists of variables for 796 * parsing arguments */ 797 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 798 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 799 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 800 #ifdef MAKE_VERSION 801 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 802 #endif 803 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 804 805 /* 806 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 807 * MAKEOBJDIR is set in the environment, try only that value 808 * and fall back to .CURDIR if it does not exist. 809 * 810 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 811 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 812 * of these paths exist, just use .CURDIR. 813 */ 814 Dir_Init(curdir); 815 (void)Main_SetObjdir(curdir); 816 817 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 818 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 819 (void)Main_SetObjdir(mdpath); 820 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 821 (void)Main_SetObjdir(path); 822 } else { 823 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 824 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 825 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 826 _PATH_OBJDIRPREFIX, curdir); 827 (void)Main_SetObjdir(mdpath); 828 } 829 } 830 831 create = Lst_Init(FALSE); 832 makefiles = Lst_Init(FALSE); 833 printVars = FALSE; 834 variables = Lst_Init(FALSE); 835 beSilent = FALSE; /* Print commands as executed */ 836 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 837 noExecute = FALSE; /* Execute all commands */ 838 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 839 keepgoing = FALSE; /* Stop on error */ 840 allPrecious = FALSE; /* Remove targets when interrupted */ 841 queryFlag = FALSE; /* This is not just a check-run */ 842 noBuiltins = FALSE; /* Read the built-in rules */ 843 touchFlag = FALSE; /* Actually update targets */ 844 debug = 0; /* No debug verbosity, please. */ 845 jobsRunning = FALSE; 846 847 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 848 maxJobTokens = maxJobs; 849 compatMake = FALSE; /* No compat mode */ 850 851 852 /* 853 * Initialize the parsing, directory and variable modules to prepare 854 * for the reading of inclusion paths and variable settings on the 855 * command line 856 */ 857 858 /* 859 * Initialize various variables. 860 * MAKE also gets this name, for compatibility 861 * .MAKEFLAGS gets set to the empty string just in case. 862 * MFLAGS also gets initialized empty, for compatibility. 863 */ 864 Parse_Init(); 865 Var_Set("MAKE", argv[0], VAR_GLOBAL, 0); 866 Var_Set(".MAKE", argv[0], VAR_GLOBAL, 0); 867 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 868 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 869 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 870 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 871 872 /* 873 * Set some other useful macros 874 */ 875 { 876 char tmp[64]; 877 878 snprintf(tmp, sizeof(tmp), "%u", getpid()); 879 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 880 snprintf(tmp, sizeof(tmp), "%u", getppid()); 881 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 882 } 883 Job_SetPrefix(); 884 885 /* 886 * First snag any flags out of the MAKE environment variable. 887 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 888 * in a different format). 889 */ 890 #ifdef POSIX 891 Main_ParseArgLine(getenv("MAKEFLAGS")); 892 #else 893 Main_ParseArgLine(getenv("MAKE")); 894 #endif 895 896 MainParseArgs(argc, argv); 897 898 /* 899 * Be compatible if user did not specify -j and did not explicitly 900 * turned compatibility on 901 */ 902 if (!compatMake && !forceJobs) { 903 compatMake = TRUE; 904 } 905 906 /* 907 * Initialize archive, target and suffix modules in preparation for 908 * parsing the makefile(s) 909 */ 910 Arch_Init(); 911 Targ_Init(); 912 Suff_Init(); 913 Trace_Init(tracefile); 914 915 DEFAULT = NILGNODE; 916 (void)time(&now); 917 918 Trace_Log(MAKESTART, NULL); 919 920 /* 921 * Set up the .TARGETS variable to contain the list of targets to be 922 * created. If none specified, make the variable empty -- the parser 923 * will fill the thing in with the default or .MAIN target. 924 */ 925 if (!Lst_IsEmpty(create)) { 926 LstNode ln; 927 928 for (ln = Lst_First(create); ln != NILLNODE; 929 ln = Lst_Succ(ln)) { 930 char *name = (char *)Lst_Datum(ln); 931 932 Var_Append(".TARGETS", name, VAR_GLOBAL); 933 } 934 } else 935 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 936 937 938 /* 939 * If no user-supplied system path was given (through the -m option) 940 * add the directories from the DEFSYSPATH (more than one may be given 941 * as dir1:...:dirn) to the system include path. 942 */ 943 if (syspath == NULL || *syspath == '\0') 944 syspath = defsyspath; 945 else 946 syspath = estrdup(syspath); 947 948 for (start = syspath; *start != '\0'; start = cp) { 949 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 950 continue; 951 if (*cp == ':') { 952 *cp++ = '\0'; 953 } 954 /* look for magic parent directory search string */ 955 if (strncmp(".../", start, 4) != 0) { 956 (void)Dir_AddDir(defIncPath, start); 957 } else { 958 if (Dir_FindHereOrAbove(curdir, start+4, 959 found_path, sizeof(found_path))) { 960 (void)Dir_AddDir(defIncPath, found_path); 961 } 962 } 963 } 964 if (syspath != defsyspath) 965 free(syspath); 966 967 /* 968 * Read in the built-in rules first, followed by the specified 969 * makefile, if it was (makefile != NULL), or the default 970 * makefile and Makefile, in that order, if it wasn't. 971 */ 972 if (!noBuiltins) { 973 LstNode ln; 974 975 sysMkPath = Lst_Init(FALSE); 976 Dir_Expand(_PATH_DEFSYSMK, 977 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 978 sysMkPath); 979 if (Lst_IsEmpty(sysMkPath)) 980 Fatal("%s: no system rules (%s).", progname, 981 _PATH_DEFSYSMK); 982 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 983 if (ln == NILLNODE) 984 Fatal("%s: cannot open %s.", progname, 985 (char *)Lst_Datum(ln)); 986 } 987 988 if (!Lst_IsEmpty(makefiles)) { 989 LstNode ln; 990 991 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 992 if (ln != NILLNODE) 993 Fatal("%s: cannot open %s.", progname, 994 (char *)Lst_Datum(ln)); 995 } else if (ReadMakefile(UNCONST("makefile"), NULL) != 0) 996 (void)ReadMakefile(UNCONST("Makefile"), NULL); 997 998 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 999 if (!noBuiltins || !printVars) { 1000 doing_depend = TRUE; 1001 (void)ReadMakefile(UNCONST(".depend"), NULL); 1002 doing_depend = FALSE; 1003 } 1004 1005 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1006 if (p1) 1007 free(p1); 1008 1009 if (!compatMake) 1010 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1011 if (DEBUG(JOB)) 1012 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1013 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1014 1015 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1016 1017 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1018 1019 1020 /* 1021 * For compatibility, look at the directories in the VPATH variable 1022 * and add them to the search path, if the variable is defined. The 1023 * variable's value is in the same format as the PATH envariable, i.e. 1024 * <directory>:<directory>:<directory>... 1025 */ 1026 if (Var_Exists("VPATH", VAR_CMD)) { 1027 char *vpath, savec; 1028 /* 1029 * GCC stores string constants in read-only memory, but 1030 * Var_Subst will want to write this thing, so store it 1031 * in an array 1032 */ 1033 static char VPATH[] = "${VPATH}"; 1034 1035 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1036 path = vpath; 1037 do { 1038 /* skip to end of directory */ 1039 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1040 continue; 1041 /* Save terminator character so know when to stop */ 1042 savec = *cp; 1043 *cp = '\0'; 1044 /* Add directory to search path */ 1045 (void)Dir_AddDir(dirSearchPath, path); 1046 *cp = savec; 1047 path = cp + 1; 1048 } while (savec == ':'); 1049 free(vpath); 1050 } 1051 1052 /* 1053 * Now that all search paths have been read for suffixes et al, it's 1054 * time to add the default search path to their lists... 1055 */ 1056 Suff_DoPaths(); 1057 1058 /* 1059 * Propagate attributes through :: dependency lists. 1060 */ 1061 Targ_Propagate(); 1062 1063 /* print the initial graph, if the user requested it */ 1064 if (DEBUG(GRAPH1)) 1065 Targ_PrintGraph(1); 1066 1067 /* print the values of any variables requested by the user */ 1068 if (printVars) { 1069 LstNode ln; 1070 1071 for (ln = Lst_First(variables); ln != NILLNODE; 1072 ln = Lst_Succ(ln)) { 1073 char *var = (char *)Lst_Datum(ln); 1074 char *value; 1075 1076 if (strchr(var, '$')) { 1077 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1078 } else { 1079 value = Var_Value(var, VAR_GLOBAL, &p1); 1080 } 1081 printf("%s\n", value ? value : ""); 1082 if (p1) 1083 free(p1); 1084 } 1085 } else { 1086 /* 1087 * Have now read the entire graph and need to make a list of 1088 * targets to create. If none was given on the command line, 1089 * we consult the parsing module to find the main target(s) 1090 * to create. 1091 */ 1092 if (Lst_IsEmpty(create)) 1093 targs = Parse_MainName(); 1094 else 1095 targs = Targ_FindList(create, TARG_CREATE); 1096 1097 if (!compatMake) { 1098 /* 1099 * Initialize job module before traversing the graph 1100 * now that any .BEGIN and .END targets have been read. 1101 * This is done only if the -q flag wasn't given 1102 * (to prevent the .BEGIN from being executed should 1103 * it exist). 1104 */ 1105 if (!queryFlag) { 1106 Job_Init(); 1107 jobsRunning = TRUE; 1108 } 1109 1110 /* Traverse the graph, checking on all the targets */ 1111 outOfDate = Make_Run(targs); 1112 } else { 1113 /* 1114 * Compat_Init will take care of creating all the 1115 * targets as well as initializing the module. 1116 */ 1117 Compat_Run(targs); 1118 } 1119 } 1120 1121 #ifdef CLEANUP 1122 Lst_Destroy(targs, NOFREE); 1123 Lst_Destroy(variables, NOFREE); 1124 Lst_Destroy(makefiles, NOFREE); 1125 Lst_Destroy(create, (FreeProc *)free); 1126 #endif 1127 1128 /* print the graph now it's been processed if the user requested it */ 1129 if (DEBUG(GRAPH2)) 1130 Targ_PrintGraph(2); 1131 1132 Trace_Log(MAKEEND, 0); 1133 1134 Suff_End(); 1135 Targ_End(); 1136 Arch_End(); 1137 Var_End(); 1138 Parse_End(); 1139 Dir_End(); 1140 Job_End(); 1141 Trace_End(); 1142 1143 return outOfDate ? 1 : 0; 1144 } 1145 1146 /*- 1147 * ReadMakefile -- 1148 * Open and parse the given makefile. 1149 * 1150 * Results: 1151 * 0 if ok. -1 if couldn't open file. 1152 * 1153 * Side Effects: 1154 * lots 1155 */ 1156 static int 1157 ReadMakefile(ClientData p, ClientData q __unused) 1158 { 1159 char *fname = p; /* makefile to read */ 1160 int fd; 1161 size_t len = MAXPATHLEN; 1162 char *name, *path = emalloc(len); 1163 int setMAKEFILE; 1164 1165 if (!strcmp(fname, "-")) { 1166 Parse_File("(stdin)", dup(fileno(stdin))); 1167 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1168 } else { 1169 setMAKEFILE = strcmp(fname, ".depend"); 1170 1171 /* if we've chdir'd, rebuild the path name */ 1172 if (strcmp(curdir, objdir) && *fname != '/') { 1173 size_t plen = strlen(curdir) + strlen(fname) + 2; 1174 if (len < plen) 1175 path = erealloc(path, len = 2 * plen); 1176 1177 (void)snprintf(path, len, "%s/%s", curdir, fname); 1178 fd = open(path, O_RDONLY); 1179 if (fd != -1) { 1180 fname = path; 1181 goto found; 1182 } 1183 1184 /* If curdir failed, try objdir (ala .depend) */ 1185 plen = strlen(objdir) + strlen(fname) + 2; 1186 if (len < plen) 1187 path = erealloc(path, len = 2 * plen); 1188 (void)snprintf(path, len, "%s/%s", objdir, fname); 1189 fd = open(path, O_RDONLY); 1190 if (fd != -1) { 1191 fname = path; 1192 goto found; 1193 } 1194 } else { 1195 fd = open(fname, O_RDONLY); 1196 if (fd != -1) 1197 goto found; 1198 } 1199 /* look in -I and system include directories. */ 1200 name = Dir_FindFile(fname, parseIncPath); 1201 if (!name) 1202 name = Dir_FindFile(fname, 1203 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1204 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1205 if (name) 1206 free(name); 1207 free(path); 1208 return(-1); 1209 } 1210 fname = name; 1211 /* 1212 * set the MAKEFILE variable desired by System V fans -- the 1213 * placement of the setting here means it gets set to the last 1214 * makefile specified, as it is set by SysV make. 1215 */ 1216 found: 1217 if (setMAKEFILE) 1218 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1219 Parse_File(fname, fd); 1220 } 1221 free(path); 1222 return(0); 1223 } 1224 1225 1226 /* 1227 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1228 * in situations that would not arrise with ./obj (links or not). 1229 * This tends to break things like: 1230 * 1231 * build: 1232 * ${MAKE} includes 1233 * 1234 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1235 * opposed to an argument) in a command line and if so returns 1236 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1237 * the Makefile hold true. 1238 * 1239 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1240 * 1241 * The chdir() only happens in the child process, and does nothing if 1242 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1243 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1244 * do nothing - to ensure historic semantics can be retained. 1245 */ 1246 static int Check_Cwd_Off = 0; 1247 1248 static char * 1249 Check_Cwd_av(int ac, char **av, int copy) 1250 { 1251 static char *make[4]; 1252 static char *cur_dir = NULL; 1253 char **mp; 1254 char *cp; 1255 int is_cmd, next_cmd; 1256 int i; 1257 int n; 1258 1259 if (Check_Cwd_Off) 1260 return NULL; 1261 1262 if (make[0] == NULL) { 1263 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1264 Check_Cwd_Off = 1; 1265 return NULL; 1266 } 1267 1268 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1269 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1270 make[0] = make[1]; 1271 make[1] = NULL; 1272 } else 1273 ++make[0]; 1274 make[2] = NULL; 1275 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1276 } 1277 if (ac == 0 || av == NULL) 1278 return NULL; /* initialization only */ 1279 1280 if (getenv("MAKEOBJDIR") == NULL && 1281 getenv("MAKEOBJDIRPREFIX") == NULL) 1282 return NULL; 1283 1284 1285 next_cmd = 1; 1286 for (i = 0; i < ac; ++i) { 1287 is_cmd = next_cmd; 1288 1289 n = strlen(av[i]); 1290 cp = &(av[i])[n - 1]; 1291 if (strspn(av[i], "|&;") == (size_t)n) { 1292 next_cmd = 1; 1293 continue; 1294 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1295 next_cmd = 1; 1296 if (copy) { 1297 do { 1298 *cp-- = '\0'; 1299 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1300 *cp == ')' || *cp == '}') ; 1301 } else { 1302 /* 1303 * XXX this should not happen. 1304 */ 1305 fprintf(stderr, "WARNING: raw arg ends in shell meta '%s'\n", 1306 av[i]); 1307 } 1308 } else 1309 next_cmd = 0; 1310 1311 cp = av[i]; 1312 if (*cp == ';' || *cp == '&' || *cp == '|') 1313 is_cmd = 1; 1314 1315 #ifdef check_cwd_debug 1316 fprintf(stderr, "av[%d] == %s '%s'", 1317 i, (is_cmd) ? "cmd" : "arg", av[i]); 1318 #endif 1319 if (is_cmd != 0) { 1320 if (*cp == '(' || *cp == '{' || 1321 *cp == ';' || *cp == '&' || *cp == '|') { 1322 do { 1323 ++cp; 1324 } while (*cp == '(' || *cp == '{' || 1325 *cp == ';' || *cp == '&' || *cp == '|'); 1326 if (*cp == '\0') { 1327 next_cmd = 1; 1328 continue; 1329 } 1330 } 1331 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1332 #ifdef check_cwd_debug 1333 fprintf(stderr, " == cd, done.\n"); 1334 #endif 1335 return NULL; 1336 } 1337 for (mp = make; *mp != NULL; ++mp) { 1338 n = strlen(*mp); 1339 if (strcmp(cp, *mp) == 0) { 1340 #ifdef check_cwd_debug 1341 fprintf(stderr, " %s == '%s', chdir(%s)\n", 1342 cp, *mp, cur_dir); 1343 #endif 1344 return cur_dir; 1345 } 1346 } 1347 } 1348 #ifdef check_cwd_debug 1349 fprintf(stderr, "\n"); 1350 #endif 1351 } 1352 return NULL; 1353 } 1354 1355 char * 1356 Check_Cwd_Cmd(const char *cmd) 1357 { 1358 char *cp, *bp; 1359 char **av; 1360 int ac; 1361 1362 if (Check_Cwd_Off) 1363 return NULL; 1364 1365 if (cmd) { 1366 av = brk_string(cmd, &ac, TRUE, &bp); 1367 #ifdef check_cwd_debug 1368 fprintf(stderr, "splitting: '%s' -> %d words\n", 1369 cmd, ac); 1370 #endif 1371 } else { 1372 ac = 0; 1373 av = NULL; 1374 bp = NULL; 1375 } 1376 cp = Check_Cwd_av(ac, av, 1); 1377 if (bp) 1378 free(bp); 1379 if (av) 1380 free(av); 1381 return cp; 1382 } 1383 1384 void 1385 Check_Cwd(const char **argv) 1386 { 1387 char *cp; 1388 int ac; 1389 1390 if (Check_Cwd_Off) 1391 return; 1392 1393 for (ac = 0; argv[ac] != NULL; ++ac) 1394 /* NOTHING */; 1395 if (ac == 3 && *argv[1] == '-') { 1396 cp = Check_Cwd_Cmd(argv[2]); 1397 } else { 1398 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1399 } 1400 if (cp) { 1401 chdir(cp); 1402 } 1403 } 1404 1405 /*- 1406 * Cmd_Exec -- 1407 * Execute the command in cmd, and return the output of that command 1408 * in a string. 1409 * 1410 * Results: 1411 * A string containing the output of the command, or the empty string 1412 * If errnum is not NULL, it contains the reason for the command failure 1413 * 1414 * Side Effects: 1415 * The string must be freed by the caller. 1416 */ 1417 char * 1418 Cmd_Exec(const char *cmd, const char **errnum) 1419 { 1420 const char *args[4]; /* Args for invoking the shell */ 1421 int fds[2]; /* Pipe streams */ 1422 int cpid; /* Child PID */ 1423 int pid; /* PID from wait() */ 1424 char *res; /* result */ 1425 int status; /* command exit status */ 1426 Buffer buf; /* buffer to store the result */ 1427 char *cp; 1428 int cc; 1429 1430 1431 *errnum = NULL; 1432 1433 if (!shellName) 1434 Shell_Init(); 1435 /* 1436 * Set up arguments for shell 1437 */ 1438 args[0] = shellName; 1439 args[1] = "-c"; 1440 args[2] = cmd; 1441 args[3] = NULL; 1442 1443 /* 1444 * Open a pipe for fetching its output 1445 */ 1446 if (pipe(fds) == -1) { 1447 *errnum = "Couldn't create pipe for \"%s\""; 1448 goto bad; 1449 } 1450 1451 /* 1452 * Fork 1453 */ 1454 switch (cpid = vfork()) { 1455 case 0: 1456 /* 1457 * Close input side of pipe 1458 */ 1459 (void)close(fds[0]); 1460 1461 /* 1462 * Duplicate the output stream to the shell's output, then 1463 * shut the extra thing down. Note we don't fetch the error 1464 * stream...why not? Why? 1465 */ 1466 (void)dup2(fds[1], 1); 1467 (void)close(fds[1]); 1468 1469 Var_ExportVars(); 1470 1471 (void)execv(shellPath, UNCONST(args)); 1472 _exit(1); 1473 /*NOTREACHED*/ 1474 1475 case -1: 1476 *errnum = "Couldn't exec \"%s\""; 1477 goto bad; 1478 1479 default: 1480 /* 1481 * No need for the writing half 1482 */ 1483 (void)close(fds[1]); 1484 1485 buf = Buf_Init(0); 1486 1487 do { 1488 char result[BUFSIZ]; 1489 cc = read(fds[0], result, sizeof(result)); 1490 if (cc > 0) 1491 Buf_AddBytes(buf, cc, (Byte *)result); 1492 } 1493 while (cc > 0 || (cc == -1 && errno == EINTR)); 1494 1495 /* 1496 * Close the input side of the pipe. 1497 */ 1498 (void)close(fds[0]); 1499 1500 /* 1501 * Wait for the process to exit. 1502 */ 1503 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) 1504 continue; 1505 1506 res = (char *)Buf_GetAll(buf, &cc); 1507 Buf_Destroy(buf, FALSE); 1508 1509 if (cc == 0) 1510 *errnum = "Couldn't read shell's output for \"%s\""; 1511 1512 if (status) 1513 *errnum = "\"%s\" returned non-zero status"; 1514 1515 /* 1516 * Null-terminate the result, convert newlines to spaces and 1517 * install it in the variable. 1518 */ 1519 res[cc] = '\0'; 1520 cp = &res[cc]; 1521 1522 if (cc > 0 && *--cp == '\n') { 1523 /* 1524 * A final newline is just stripped 1525 */ 1526 *cp-- = '\0'; 1527 } 1528 while (cp >= res) { 1529 if (*cp == '\n') { 1530 *cp = ' '; 1531 } 1532 cp--; 1533 } 1534 break; 1535 } 1536 return res; 1537 bad: 1538 res = emalloc(1); 1539 *res = '\0'; 1540 return res; 1541 } 1542 1543 /*- 1544 * Error -- 1545 * Print an error message given its format. 1546 * 1547 * Results: 1548 * None. 1549 * 1550 * Side Effects: 1551 * The message is printed. 1552 */ 1553 /* VARARGS */ 1554 void 1555 Error(const char *fmt, ...) 1556 { 1557 va_list ap; 1558 1559 va_start(ap, fmt); 1560 fprintf(stderr, "%s: ", progname); 1561 (void)vfprintf(stderr, fmt, ap); 1562 va_end(ap); 1563 (void)fprintf(stderr, "\n"); 1564 (void)fflush(stderr); 1565 } 1566 1567 /*- 1568 * Fatal -- 1569 * Produce a Fatal error message. If jobs are running, waits for them 1570 * to finish. 1571 * 1572 * Results: 1573 * None 1574 * 1575 * Side Effects: 1576 * The program exits 1577 */ 1578 /* VARARGS */ 1579 void 1580 Fatal(const char *fmt, ...) 1581 { 1582 va_list ap; 1583 1584 va_start(ap, fmt); 1585 if (jobsRunning) 1586 Job_Wait(); 1587 1588 (void)vfprintf(stderr, fmt, ap); 1589 va_end(ap); 1590 (void)fprintf(stderr, "\n"); 1591 (void)fflush(stderr); 1592 1593 PrintOnError(NULL); 1594 1595 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1596 Targ_PrintGraph(2); 1597 Trace_Log(MAKEERROR, 0); 1598 exit(2); /* Not 1 so -q can distinguish error */ 1599 } 1600 1601 /* 1602 * Punt -- 1603 * Major exception once jobs are being created. Kills all jobs, prints 1604 * a message and exits. 1605 * 1606 * Results: 1607 * None 1608 * 1609 * Side Effects: 1610 * All children are killed indiscriminately and the program Lib_Exits 1611 */ 1612 /* VARARGS */ 1613 void 1614 Punt(const char *fmt, ...) 1615 { 1616 va_list ap; 1617 1618 va_start(ap, fmt); 1619 (void)fprintf(stderr, "%s: ", progname); 1620 (void)vfprintf(stderr, fmt, ap); 1621 va_end(ap); 1622 (void)fprintf(stderr, "\n"); 1623 (void)fflush(stderr); 1624 1625 PrintOnError(NULL); 1626 1627 DieHorribly(); 1628 } 1629 1630 /*- 1631 * DieHorribly -- 1632 * Exit without giving a message. 1633 * 1634 * Results: 1635 * None 1636 * 1637 * Side Effects: 1638 * A big one... 1639 */ 1640 void 1641 DieHorribly(void) 1642 { 1643 if (jobsRunning) 1644 Job_AbortAll(); 1645 if (DEBUG(GRAPH2)) 1646 Targ_PrintGraph(2); 1647 Trace_Log(MAKEERROR, 0); 1648 exit(2); /* Not 1, so -q can distinguish error */ 1649 } 1650 1651 /* 1652 * Finish -- 1653 * Called when aborting due to errors in child shell to signal 1654 * abnormal exit. 1655 * 1656 * Results: 1657 * None 1658 * 1659 * Side Effects: 1660 * The program exits 1661 */ 1662 void 1663 Finish(int errors) 1664 /* number of errors encountered in Make_Make */ 1665 { 1666 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1667 } 1668 1669 #ifndef HAVE_EMALLOC 1670 /* 1671 * emalloc -- 1672 * malloc, but die on error. 1673 */ 1674 void * 1675 emalloc(size_t len) 1676 { 1677 void *p; 1678 1679 if ((p = malloc(len)) == NULL) 1680 enomem(); 1681 return(p); 1682 } 1683 1684 /* 1685 * estrdup -- 1686 * strdup, but die on error. 1687 */ 1688 char * 1689 estrdup(const char *str) 1690 { 1691 char *p; 1692 1693 if ((p = strdup(str)) == NULL) 1694 enomem(); 1695 return(p); 1696 } 1697 1698 /* 1699 * estrndup -- 1700 * strndup, but die on error. 1701 */ 1702 char * 1703 estrndup(const char *str, size_t len) 1704 { 1705 char *p; 1706 1707 if ((p = strndup(str, len)) == NULL) 1708 enomem(); 1709 return(p); 1710 } 1711 1712 /* 1713 * erealloc -- 1714 * realloc, but die on error. 1715 */ 1716 void * 1717 erealloc(void *ptr, size_t size) 1718 { 1719 if ((ptr = realloc(ptr, size)) == NULL) 1720 enomem(); 1721 return(ptr); 1722 } 1723 1724 /* 1725 * enomem -- 1726 * die when out of memory. 1727 */ 1728 void 1729 enomem(void) 1730 { 1731 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 1732 exit(2); 1733 } 1734 #endif 1735 1736 /* 1737 * enunlink -- 1738 * Remove a file carefully, avoiding directories. 1739 */ 1740 int 1741 eunlink(const char *file) 1742 { 1743 struct stat st; 1744 1745 if (lstat(file, &st) == -1) 1746 return -1; 1747 1748 if (S_ISDIR(st.st_mode)) { 1749 errno = EISDIR; 1750 return -1; 1751 } 1752 return unlink(file); 1753 } 1754 1755 /* 1756 * execError -- 1757 * Print why exec failed, avoiding stdio. 1758 */ 1759 void 1760 execError(const char *af, const char *av) 1761 { 1762 #ifdef USE_IOVEC 1763 int i = 0; 1764 struct iovec iov[8]; 1765 #define IOADD(s) \ 1766 (void)(iov[i].iov_base = UNCONST(s), \ 1767 iov[i].iov_len = strlen(iov[i].iov_base), \ 1768 i++) 1769 #else 1770 #define IOADD(void)write(2, s, strlen(s)) 1771 #endif 1772 1773 IOADD(progname); 1774 IOADD(": "); 1775 IOADD(af); 1776 IOADD("("); 1777 IOADD(av); 1778 IOADD(") failed ("); 1779 IOADD(strerror(errno)); 1780 IOADD(")\n"); 1781 1782 #ifdef USE_IOVEC 1783 (void)writev(2, iov, 8); 1784 #endif 1785 } 1786 1787 /* 1788 * usage -- 1789 * exit with usage message 1790 */ 1791 static void 1792 usage(void) 1793 { 1794 (void)fprintf(stderr, 1795 "usage: %s [-BeikNnqrstWX] [-D variable] [-d flags] [-f makefile]\n\ 1796 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1797 [-V variable] [variable=value] [target ...]\n", progname); 1798 exit(2); 1799 } 1800 1801 1802 int 1803 PrintAddr(ClientData a, ClientData b) 1804 { 1805 printf("%lx ", (unsigned long) a); 1806 return b ? 0 : 0; 1807 } 1808 1809 1810 1811 void 1812 PrintOnError(const char *s) 1813 { 1814 char tmp[64]; 1815 char *cp; 1816 1817 if (s) 1818 printf("%s", s); 1819 1820 printf("\n%s: stopped in %s\n", progname, curdir); 1821 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1822 sizeof(tmp) - 1); 1823 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1824 if (cp) { 1825 if (*cp) 1826 printf("%s", cp); 1827 free(cp); 1828 } 1829 } 1830 1831 void 1832 Main_ExportMAKEFLAGS(Boolean first) 1833 { 1834 static int once = 1; 1835 char tmp[64]; 1836 char *s; 1837 1838 if (once != first) 1839 return; 1840 once = 0; 1841 1842 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1843 sizeof(tmp)); 1844 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1845 if (s && *s) { 1846 #ifdef POSIX 1847 setenv("MAKEFLAGS", s, 1); 1848 #else 1849 setenv("MAKE", s, 1); 1850 #endif 1851 } 1852 } 1853