main.c revision 1.655
1 /* $NetBSD: main.c,v 1.655 2025/05/28 20:18:45 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 /* 72 * The main file for this entire program. Exit routines etc. reside here. 73 * 74 * Utility functions defined in this file: 75 * 76 * Main_ParseArgLine 77 * Parse and process command line arguments from a 78 * single string. Used to implement the special targets 79 * .MFLAGS and .MAKEFLAGS. 80 * 81 * Error Print a tagged error message. 82 * 83 * Fatal Print an error message and exit. 84 * 85 * Punt Abort all jobs and exit with a message. 86 */ 87 88 #include <sys/types.h> 89 #include <sys/time.h> 90 #include <sys/param.h> 91 #include <sys/resource.h> 92 #include <sys/stat.h> 93 #ifdef MAKE_NATIVE 94 #include <sys/sysctl.h> 95 #endif 96 #include <sys/utsname.h> 97 #include <sys/wait.h> 98 99 #include <errno.h> 100 #include <signal.h> 101 #include <stdarg.h> 102 #include <time.h> 103 104 #include "make.h" 105 #include "dir.h" 106 #include "job.h" 107 #ifdef USE_META 108 # include "meta.h" 109 #endif 110 #include "pathnames.h" 111 #include "trace.h" 112 113 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 114 MAKE_RCSID("$NetBSD: main.c,v 1.655 2025/05/28 20:18:45 sjg Exp $"); 115 #if defined(MAKE_NATIVE) 116 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 " 117 "The Regents of the University of California. " 118 "All rights reserved."); 119 #endif 120 121 CmdOpts opts; 122 time_t now; /* Time at start of make */ 123 GNode *defaultNode; /* .DEFAULT node */ 124 bool allPrecious; /* .PRECIOUS given on a line by itself */ 125 bool deleteOnError; /* .DELETE_ON_ERROR: set */ 126 127 static int maxJobTokens; /* -j argument */ 128 static bool enterFlagObj; /* -w and objdir != srcdir */ 129 static bool bogusJflag; /* -J invalid */ 130 131 static int tokenPoolReader = -1, tokenPoolWriter = -1; 132 bool doing_depend; /* Set while reading .depend */ 133 static bool jobsRunning; /* true if the jobs might be running */ 134 static const char *tracefile; 135 static bool ReadMakefile(const char *); 136 static void purge_relative_cached_realpaths(void); 137 138 static bool ignorePWD; /* if we use -C, PWD is meaningless */ 139 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 140 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 141 const char *progname; 142 char *makeDependfile; 143 pid_t myPid; 144 int makelevel; 145 146 bool forceJobs = false; 147 static int main_errors = 0; 148 static HashTable cached_realpaths; 149 150 /* 151 * For compatibility with the POSIX version of MAKEFLAGS that includes 152 * all the options without '-', convert 'flags' to '-f -l -a -g -s '. 153 */ 154 static char * 155 explode(const char *flags) 156 { 157 char *exploded, *ep; 158 const char *p; 159 160 if (flags == NULL) 161 return NULL; 162 163 for (p = flags; *p != '\0'; p++) 164 if (!ch_isalpha(*p)) 165 return bmake_strdup(flags); 166 167 exploded = bmake_malloc((size_t)(p - flags) * 3 + 1); 168 for (p = flags, ep = exploded; *p != '\0'; p++) { 169 *ep++ = '-'; 170 *ep++ = *p; 171 *ep++ = ' '; 172 } 173 *ep = '\0'; 174 return exploded; 175 } 176 177 MAKE_ATTR_DEAD static void 178 usage(void) 179 { 180 size_t prognameLen = strcspn(progname, "["); 181 182 (void)fprintf(stderr, 183 "usage: %.*s [-BeikNnqrSstWwX]\n" 184 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 185 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 186 " [-V variable] [-v variable] [variable=value] [target ...]\n", 187 (int)prognameLen, progname); 188 exit(2); 189 } 190 191 static void 192 MainParseArgDebugFile(const char *arg) 193 { 194 const char *mode; 195 size_t len; 196 char *fname; 197 198 if (opts.debug_file != stdout && opts.debug_file != stderr) 199 fclose(opts.debug_file); 200 201 if (*arg == '+') { 202 arg++; 203 mode = "a"; 204 } else 205 mode = "w"; 206 207 if (strcmp(arg, "stdout") == 0) { 208 opts.debug_file = stdout; 209 return; 210 } 211 if (strcmp(arg, "stderr") == 0) { 212 opts.debug_file = stderr; 213 return; 214 } 215 216 len = strlen(arg); 217 fname = bmake_malloc(len + 20); 218 memcpy(fname, arg, len + 1); 219 220 /* Replace the trailing '%d' after '.%d' with the pid. */ 221 if (len >= 3 && memcmp(fname + len - 3, ".%d", 3) == 0) 222 snprintf(fname + len - 2, 20, "%d", getpid()); 223 224 opts.debug_file = fopen(fname, mode); 225 if (opts.debug_file == NULL) { 226 fprintf(stderr, "Cannot open debug file \"%s\"\n", fname); 227 exit(2); 228 } 229 free(fname); 230 } 231 232 static void 233 MainParseArgDebug(const char *argvalue) 234 { 235 const char *modules; 236 DebugFlags debug = opts.debug; 237 238 for (modules = argvalue; *modules != '\0'; modules++) { 239 switch (*modules) { 240 case '0': /* undocumented, only intended for tests */ 241 memset(&debug, 0, sizeof(debug)); 242 break; 243 case 'A': 244 memset(&debug, ~0, sizeof(debug)); 245 break; 246 case 'a': 247 debug.DEBUG_ARCH = true; 248 break; 249 case 'C': 250 debug.DEBUG_CWD = true; 251 break; 252 case 'c': 253 debug.DEBUG_COND = true; 254 break; 255 case 'd': 256 debug.DEBUG_DIR = true; 257 break; 258 case 'e': 259 debug.DEBUG_ERROR = true; 260 break; 261 case 'f': 262 debug.DEBUG_FOR = true; 263 break; 264 case 'g': 265 if (modules[1] == '1') { 266 debug.DEBUG_GRAPH1 = true; 267 modules++; 268 } else if (modules[1] == '2') { 269 debug.DEBUG_GRAPH2 = true; 270 modules++; 271 } else if (modules[1] == '3') { 272 debug.DEBUG_GRAPH3 = true; 273 modules++; 274 } 275 break; 276 case 'h': 277 debug.DEBUG_HASH = true; 278 break; 279 case 'j': 280 debug.DEBUG_JOB = true; 281 break; 282 case 'L': 283 opts.strict = true; 284 break; 285 case 'l': 286 debug.DEBUG_LOUD = true; 287 break; 288 case 'M': 289 debug.DEBUG_META = true; 290 break; 291 case 'm': 292 debug.DEBUG_MAKE = true; 293 break; 294 case 'n': 295 debug.DEBUG_SCRIPT = true; 296 break; 297 case 'p': 298 debug.DEBUG_PARSE = true; 299 break; 300 case 's': 301 debug.DEBUG_SUFF = true; 302 break; 303 case 't': 304 debug.DEBUG_TARG = true; 305 break; 306 case 'V': 307 opts.debugVflag = true; 308 break; 309 case 'v': 310 debug.DEBUG_VAR = true; 311 break; 312 case 'x': 313 debug.DEBUG_SHELL = true; 314 break; 315 case 'F': 316 MainParseArgDebugFile(modules + 1); 317 goto finish; 318 default: 319 (void)fprintf(stderr, 320 "%s: illegal argument to d option -- %c\n", 321 progname, *modules); 322 usage(); 323 } 324 } 325 326 finish: 327 opts.debug = debug; 328 329 setvbuf(opts.debug_file, NULL, _IONBF, 0); 330 if (opts.debug_file != stdout) 331 setvbuf(stdout, NULL, _IOLBF, 0); 332 } 333 334 /* Is path relative or does it contain any relative component "." or ".."? */ 335 static bool 336 IsRelativePath(const char *path) 337 { 338 const char *p; 339 340 if (path[0] != '/') 341 return true; 342 p = path; 343 while ((p = strstr(p, "/.")) != NULL) { 344 p += 2; 345 if (*p == '.') 346 p++; 347 if (*p == '/' || *p == '\0') 348 return true; 349 } 350 return false; 351 } 352 353 static void 354 MainParseArgChdir(const char *argvalue) 355 { 356 struct stat sa, sb; 357 358 if (chdir(argvalue) == -1) { 359 (void)fprintf(stderr, "%s: chdir %s: %s\n", 360 progname, argvalue, strerror(errno)); 361 exit(2); /* Not 1 so -q can distinguish error */ 362 } 363 if (getcwd(curdir, MAXPATHLEN) == NULL) { 364 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 365 exit(2); 366 } 367 if (!IsRelativePath(argvalue) && 368 stat(argvalue, &sa) != -1 && 369 stat(curdir, &sb) != -1 && 370 sa.st_ino == sb.st_ino && 371 sa.st_dev == sb.st_dev) 372 snprintf(curdir, MAXPATHLEN, "%s", argvalue); 373 ignorePWD = true; 374 } 375 376 static void 377 MainParseArgJobsInternal(const char *argvalue) 378 { 379 char end; 380 if (sscanf(argvalue, "%d,%d%c", 381 &tokenPoolReader, &tokenPoolWriter, &end) != 2) { 382 (void)fprintf(stderr, 383 "%s: error: invalid internal option " 384 "\"-J %s\" in \"%s\"\n", 385 progname, argvalue, curdir); 386 exit(2); 387 } 388 if ((fcntl(tokenPoolReader, F_GETFD, 0) < 0) || 389 (fcntl(tokenPoolWriter, F_GETFD, 0) < 0)) { 390 tokenPoolReader = -1; 391 tokenPoolWriter = -1; 392 bogusJflag = true; 393 } else { 394 Global_Append(MAKEFLAGS, "-J"); 395 Global_Append(MAKEFLAGS, argvalue); 396 } 397 } 398 399 static void 400 MainParseArgJobs(const char *arg) 401 { 402 const char *p; 403 char *end; 404 char v[12]; 405 406 forceJobs = true; 407 opts.maxJobs = (int)strtol(arg, &end, 0); 408 p = end; 409 #ifdef _SC_NPROCESSORS_ONLN 410 if (*p != '\0') { 411 double d; 412 413 if (*p == 'C') 414 d = (opts.maxJobs > 0) ? opts.maxJobs : 1; 415 else if (*p == '.') { 416 d = strtod(arg, &end); 417 p = end; 418 } else 419 d = 0.0; 420 if (d > 0.0) { 421 p = ""; 422 opts.maxJobs = (int)sysconf(_SC_NPROCESSORS_ONLN); 423 opts.maxJobs = (int)(d * (double)opts.maxJobs); 424 } 425 } 426 #endif 427 if (*p != '\0' || opts.maxJobs < 1) { 428 (void)fprintf(stderr, 429 "%s: argument '%s' to option '-j' " 430 "must be a positive number\n", 431 progname, arg); 432 exit(2); /* Not 1 so -q can distinguish error */ 433 } 434 snprintf(v, sizeof(v), "%d", opts.maxJobs); 435 Global_Append(MAKEFLAGS, "-j"); 436 Global_Append(MAKEFLAGS, v); 437 Global_Set(".MAKE.JOBS", v); 438 maxJobTokens = opts.maxJobs; 439 } 440 441 static void 442 MainParseArgSysInc(const char *argvalue) 443 { 444 if (strncmp(argvalue, ".../", 4) == 0) { 445 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 446 if (found_path == NULL) 447 return; 448 (void)SearchPath_Add(sysIncPath, found_path); 449 free(found_path); 450 } else { 451 (void)SearchPath_Add(sysIncPath, argvalue); 452 } 453 Global_Append(MAKEFLAGS, "-m"); 454 Global_Append(MAKEFLAGS, argvalue); 455 Dir_SetSYSPATH(); 456 } 457 458 static bool 459 MainParseOption(char c, const char *argvalue) 460 { 461 switch (c) { 462 case '\0': 463 break; 464 case 'B': 465 opts.compatMake = true; 466 Global_Append(MAKEFLAGS, "-B"); 467 Global_Set(".MAKE.MODE", "compat"); 468 break; 469 case 'C': 470 MainParseArgChdir(argvalue); 471 break; 472 case 'D': 473 if (argvalue[0] == '\0') 474 return false; 475 Var_SetExpand(SCOPE_GLOBAL, argvalue, "1"); 476 Global_Append(MAKEFLAGS, "-D"); 477 Global_Append(MAKEFLAGS, argvalue); 478 break; 479 case 'I': 480 SearchPath_Add(parseIncPath, argvalue); 481 Global_Append(MAKEFLAGS, "-I"); 482 Global_Append(MAKEFLAGS, argvalue); 483 break; 484 case 'J': 485 MainParseArgJobsInternal(argvalue); 486 break; 487 case 'N': 488 opts.noExecute = true; 489 opts.noRecursiveExecute = true; 490 Global_Append(MAKEFLAGS, "-N"); 491 break; 492 case 'S': 493 opts.keepgoing = false; 494 Global_Append(MAKEFLAGS, "-S"); 495 break; 496 case 'T': 497 tracefile = bmake_strdup(argvalue); 498 Global_Append(MAKEFLAGS, "-T"); 499 Global_Append(MAKEFLAGS, argvalue); 500 break; 501 case 'V': 502 case 'v': 503 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED; 504 Lst_Append(&opts.variables, bmake_strdup(argvalue)); 505 /* XXX: Why always -V? */ 506 Global_Append(MAKEFLAGS, "-V"); 507 Global_Append(MAKEFLAGS, argvalue); 508 break; 509 case 'W': 510 opts.parseWarnFatal = true; 511 /* XXX: why no Global_Append? */ 512 break; 513 case 'X': 514 opts.varNoExportEnv = true; 515 Global_Append(MAKEFLAGS, "-X"); 516 break; 517 case 'd': 518 /* If '-d-opts' don't pass to children */ 519 if (argvalue[0] == '-') 520 argvalue++; 521 else { 522 Global_Append(MAKEFLAGS, "-d"); 523 Global_Append(MAKEFLAGS, argvalue); 524 } 525 MainParseArgDebug(argvalue); 526 break; 527 case 'e': 528 opts.checkEnvFirst = true; 529 Global_Append(MAKEFLAGS, "-e"); 530 break; 531 case 'f': 532 Lst_Append(&opts.makefiles, bmake_strdup(argvalue)); 533 break; 534 case 'i': 535 opts.ignoreErrors = true; 536 Global_Append(MAKEFLAGS, "-i"); 537 break; 538 case 'j': 539 MainParseArgJobs(argvalue); 540 break; 541 case 'k': 542 opts.keepgoing = true; 543 Global_Append(MAKEFLAGS, "-k"); 544 break; 545 case 'm': 546 MainParseArgSysInc(argvalue); 547 /* XXX: why no Var_Append? */ 548 break; 549 case 'n': 550 opts.noExecute = true; 551 Global_Append(MAKEFLAGS, "-n"); 552 break; 553 case 'q': 554 opts.query = true; 555 /* Kind of nonsensical, wot? */ 556 Global_Append(MAKEFLAGS, "-q"); 557 break; 558 case 'r': 559 opts.noBuiltins = true; 560 Global_Append(MAKEFLAGS, "-r"); 561 break; 562 case 's': 563 opts.silent = true; 564 Global_Append(MAKEFLAGS, "-s"); 565 break; 566 case 't': 567 opts.touch = true; 568 Global_Append(MAKEFLAGS, "-t"); 569 break; 570 case 'w': 571 opts.enterFlag = true; 572 Global_Append(MAKEFLAGS, "-w"); 573 break; 574 default: 575 usage(); 576 } 577 return true; 578 } 579 580 /* 581 * Parse the given arguments. Called from main() and from 582 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 583 * 584 * The arguments must be treated as read-only and will be freed after the 585 * call. 586 * 587 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 588 */ 589 static void 590 MainParseArgs(int argc, char **argv) 591 { 592 char c; 593 int arginc; 594 char *argvalue; 595 char *optscan; 596 bool inOption, dashDash = false; 597 598 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 599 /* Can't actually use getopt(3) because rescanning is not portable */ 600 601 rearg: 602 inOption = false; 603 optscan = NULL; 604 while (argc > 1) { 605 const char *optspec; 606 if (!inOption) 607 optscan = argv[1]; 608 c = *optscan++; 609 arginc = 0; 610 if (inOption) { 611 if (c == '\0') { 612 argv++; 613 argc--; 614 inOption = false; 615 continue; 616 } 617 } else { 618 if (c != '-' || dashDash) 619 break; 620 inOption = true; 621 c = *optscan++; 622 } 623 /* '-' found at some earlier point */ 624 optspec = strchr(optspecs, c); 625 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 626 /* 627 * -<something> found, and <something> should have an 628 * argument 629 */ 630 inOption = false; 631 arginc = 1; 632 argvalue = optscan; 633 if (*argvalue == '\0') { 634 if (argc < 3) 635 goto noarg; 636 argvalue = argv[2]; 637 arginc = 2; 638 } 639 } else { 640 argvalue = NULL; 641 } 642 switch (c) { 643 case '\0': 644 arginc = 1; 645 inOption = false; 646 break; 647 case '-': 648 dashDash = true; 649 break; 650 default: 651 if (!MainParseOption(c, argvalue)) 652 goto noarg; 653 } 654 argv += arginc; 655 argc -= arginc; 656 } 657 658 /* 659 * See if the rest of the arguments are variable assignments and 660 * perform them if so. Else take them to be targets and stuff them 661 * on the end of the "create" list. 662 */ 663 for (; argc > 1; argv++, argc--) { 664 if (!Parse_VarAssign(argv[1], false, SCOPE_CMDLINE)) { 665 if (argv[1][0] == '\0') 666 Punt("illegal (null) argument."); 667 if (argv[1][0] == '-' && !dashDash) 668 goto rearg; 669 Lst_Append(&opts.create, bmake_strdup(argv[1])); 670 } 671 } 672 673 return; 674 noarg: 675 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 676 progname, c); 677 usage(); 678 } 679 680 /* 681 * Break a line of arguments into words and parse them. 682 * 683 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 684 * by main() when reading the MAKEFLAGS environment variable. 685 */ 686 void 687 Main_ParseArgLine(const char *line) 688 { 689 Words words; 690 char *buf; 691 const char *p; 692 693 if (line == NULL) 694 return; 695 for (p = line; *p == ' '; p++) 696 continue; 697 if (p[0] == '\0') 698 return; 699 700 { 701 FStr argv0 = Var_Value(SCOPE_GLOBAL, ".MAKE"); 702 buf = str_concat3(argv0.str, " ", p); 703 FStr_Done(&argv0); 704 } 705 706 words = Str_Words(buf, true); 707 if (words.words == NULL) { 708 Error("Unterminated quoted string [%s]", buf); 709 free(buf); 710 return; 711 } 712 free(buf); 713 EvalStack_PushMakeflags(line); 714 MainParseArgs((int)words.len, words.words); 715 EvalStack_Pop(); 716 717 Words_Free(words); 718 } 719 720 bool 721 Main_SetObjdir(bool writable, const char *fmt, ...) 722 { 723 struct stat sb; 724 char *path; 725 char buf[MAXPATHLEN + 1]; 726 char buf2[MAXPATHLEN + 1]; 727 va_list ap; 728 729 va_start(ap, fmt); 730 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 731 va_end(ap); 732 733 if (path[0] != '/') { 734 if (snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path) <= MAXPATHLEN) 735 path = buf2; 736 else 737 return false; 738 } 739 740 /* look for the directory and try to chdir there */ 741 if (stat(path, &sb) != 0 || !S_ISDIR(sb.st_mode)) 742 return false; 743 744 if ((writable && access(path, W_OK) != 0) || chdir(path) != 0) { 745 (void)fprintf(stderr, "%s: warning: %s: %s.\n", 746 progname, path, strerror(errno)); 747 /* Allow debugging how we got here - not always obvious */ 748 if (GetBooleanExpr("${MAKE_DEBUG_OBJDIR_CHECK_WRITABLE}", 749 false)) 750 PrintOnError(NULL, ""); 751 return false; 752 } 753 754 snprintf(objdir, sizeof objdir, "%s", path); 755 Global_Set(".OBJDIR", objdir); 756 setenv("PWD", objdir, 1); 757 Dir_InitDot(); 758 purge_relative_cached_realpaths(); 759 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 760 enterFlagObj = true; 761 return true; 762 } 763 764 static bool 765 SetVarObjdir(bool writable, const char *var, const char *suffix) 766 { 767 FStr path = Var_Value(SCOPE_CMDLINE, var); 768 769 if (path.str == NULL || path.str[0] == '\0') { 770 FStr_Done(&path); 771 return false; 772 } 773 774 Var_Expand(&path, SCOPE_GLOBAL, VARE_EVAL); 775 776 (void)Main_SetObjdir(writable, "%s%s", path.str, suffix); 777 778 FStr_Done(&path); 779 return true; 780 } 781 782 /* 783 * Splits str into words (in-place, modifying it), adding them to the list. 784 * The string must be kept alive as long as the list. 785 */ 786 void 787 AppendWords(StringList *lp, char *str) 788 { 789 char *p; 790 const char *sep = " \t"; 791 792 for (p = strtok(str, sep); p != NULL; p = strtok(NULL, sep)) 793 Lst_Append(lp, p); 794 } 795 796 #ifdef SIGINFO 797 static void 798 siginfo(int signo MAKE_ATTR_UNUSED) 799 { 800 char dir[MAXPATHLEN]; 801 char str[2 * MAXPATHLEN]; 802 int len; 803 if (getcwd(dir, sizeof dir) == NULL) 804 return; 805 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 806 if (len > 0) 807 (void)write(STDERR_FILENO, str, (size_t)len); 808 } 809 #endif 810 811 /* Allow makefiles some control over the mode we run in. */ 812 static void 813 MakeMode(void) 814 { 815 char *mode = Var_Subst("${.MAKE.MODE:tl}", SCOPE_GLOBAL, VARE_EVAL); 816 /* TODO: handle errors */ 817 818 if (mode[0] != '\0') { 819 if (strstr(mode, "compat") != NULL) { 820 opts.compatMake = true; 821 forceJobs = false; 822 } 823 #if USE_META 824 if (strstr(mode, "meta") != NULL) 825 meta_mode_init(mode); 826 #endif 827 if (strstr(mode, "randomize-targets") != NULL) 828 opts.randomizeTargets = true; 829 } 830 831 free(mode); 832 } 833 834 static void 835 PrintVariable(const char *varname, bool expandVars) 836 { 837 if (strchr(varname, '$') != NULL) { 838 char *evalue = Var_Subst(varname, SCOPE_GLOBAL, VARE_EVAL); 839 /* TODO: handle errors */ 840 printf("%s\n", evalue); 841 free(evalue); 842 843 } else if (expandVars) { 844 char *expr = str_concat3("${", varname, "}"); 845 char *evalue = Var_Subst(expr, SCOPE_GLOBAL, VARE_EVAL); 846 /* TODO: handle errors */ 847 free(expr); 848 printf("%s\n", evalue); 849 free(evalue); 850 851 } else { 852 FStr value = Var_Value(SCOPE_GLOBAL, varname); 853 printf("%s\n", value.str != NULL ? value.str : ""); 854 FStr_Done(&value); 855 } 856 } 857 858 /* 859 * Return a bool based on a variable. 860 * 861 * If the knob is not set, return the fallback. 862 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 863 * is false, otherwise true. 864 */ 865 bool 866 GetBooleanExpr(const char *expr, bool fallback) 867 { 868 char *value; 869 bool res; 870 871 value = Var_Subst(expr, SCOPE_GLOBAL, VARE_EVAL); 872 /* TODO: handle errors */ 873 res = ParseBoolean(value, fallback); 874 free(value); 875 return res; 876 } 877 878 static void 879 PrintVariables(void) 880 { 881 StringListNode *ln; 882 bool expandVars; 883 884 if (opts.printVars == PVM_EXPANDED) 885 expandVars = true; 886 else if (opts.debugVflag) 887 expandVars = false; 888 else 889 expandVars = GetBooleanExpr("${.MAKE.EXPAND_VARIABLES}", 890 false); 891 892 for (ln = opts.variables.first; ln != NULL; ln = ln->next) 893 PrintVariable(ln->datum, expandVars); 894 } 895 896 static bool 897 MakeTargets(void) 898 { 899 GNodeList targets = LST_INIT; 900 bool outOfDate; /* false if all targets up to date */ 901 902 if (Lst_IsEmpty(&opts.create)) 903 Parse_MainName(&targets); 904 else 905 Targ_FindList(&targets, &opts.create); 906 907 if (!opts.compatMake) { 908 if (!opts.query) { 909 Job_Init(); 910 jobsRunning = true; 911 } 912 913 outOfDate = Make_MakeParallel(&targets); 914 } else { 915 Compat_MakeAll(&targets); 916 outOfDate = false; 917 } 918 Lst_Done(&targets); /* Don't free the targets themselves. */ 919 return outOfDate; 920 } 921 922 /* 923 * Set up the .TARGETS variable to contain the list of targets to be created. 924 * If none specified, make the variable empty for now, the parser will fill 925 * in the default or .MAIN target later. 926 */ 927 static void 928 InitVarTargets(void) 929 { 930 StringListNode *ln; 931 932 if (Lst_IsEmpty(&opts.create)) { 933 Global_Set(".TARGETS", ""); 934 return; 935 } 936 937 for (ln = opts.create.first; ln != NULL; ln = ln->next) { 938 const char *name = ln->datum; 939 Global_Append(".TARGETS", name); 940 } 941 } 942 943 static void 944 InitRandom(void) 945 { 946 struct timeval tv; 947 948 gettimeofday(&tv, NULL); 949 srandom((unsigned)(tv.tv_sec + tv.tv_usec)); 950 } 951 952 static const char * 953 InitVarMachine(const struct utsname *utsname MAKE_ATTR_UNUSED) 954 { 955 const char *machine = getenv("MACHINE"); 956 if (machine != NULL) 957 return machine; 958 959 #if defined(MAKE_NATIVE) 960 return utsname->machine; 961 #elif defined(MAKE_MACHINE) 962 return MAKE_MACHINE; 963 #else 964 return "unknown"; 965 #endif 966 } 967 968 static const char * 969 InitVarMachineArch(void) 970 { 971 const char *env = getenv("MACHINE_ARCH"); 972 if (env != NULL) 973 return env; 974 975 #ifdef MAKE_NATIVE 976 { 977 struct utsname utsname; 978 static char machine_arch_buf[sizeof utsname.machine]; 979 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 980 size_t len = sizeof machine_arch_buf; 981 982 if (sysctl(mib, (unsigned)__arraycount(mib), 983 machine_arch_buf, &len, NULL, 0) < 0) { 984 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", 985 progname, strerror(errno)); 986 exit(2); 987 } 988 989 return machine_arch_buf; 990 } 991 #elif defined(MACHINE_ARCH) 992 return MACHINE_ARCH; 993 #elif defined(MAKE_MACHINE_ARCH) 994 return MAKE_MACHINE_ARCH; 995 #else 996 return "unknown"; 997 #endif 998 } 999 1000 #ifndef NO_PWD_OVERRIDE 1001 /* 1002 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1003 * since the value of curdir can vary depending on how we got 1004 * here. That is, sitting at a shell prompt (shell that provides $PWD) 1005 * or via subdir.mk, in which case it's likely a shell which does 1006 * not provide it. 1007 * 1008 * So, to stop it breaking this case only, we ignore PWD if 1009 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains an expression. 1010 */ 1011 static void 1012 HandlePWD(const struct stat *curdir_st) 1013 { 1014 char *pwd; 1015 FStr makeobjdir; 1016 struct stat pwd_st; 1017 1018 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1019 return; 1020 1021 if (Var_Exists(SCOPE_CMDLINE, "MAKEOBJDIRPREFIX")) 1022 return; 1023 1024 makeobjdir = Var_Value(SCOPE_CMDLINE, "MAKEOBJDIR"); 1025 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL) 1026 goto ignore_pwd; 1027 1028 if (stat(pwd, &pwd_st) == 0 && 1029 curdir_st->st_ino == pwd_st.st_ino && 1030 curdir_st->st_dev == pwd_st.st_dev) 1031 snprintf(curdir, MAXPATHLEN, "%s", pwd); 1032 1033 ignore_pwd: 1034 FStr_Done(&makeobjdir); 1035 } 1036 #endif 1037 1038 /* 1039 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, MAKEOBJDIR is set 1040 * in the environment, try only that value and fall back to .CURDIR if it 1041 * does not exist. 1042 * 1043 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1044 * and finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none of these 1045 * paths exist, just use .CURDIR. 1046 */ 1047 static void 1048 InitObjdir(const char *machine, const char *machine_arch) 1049 { 1050 bool writable; 1051 1052 Dir_InitCur(curdir); 1053 writable = GetBooleanExpr("${MAKE_OBJDIR_CHECK_WRITABLE}", true); 1054 (void)Main_SetObjdir(false, "%s", curdir); 1055 1056 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1057 !SetVarObjdir(writable, "MAKEOBJDIR", "") && 1058 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1059 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1060 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1061 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1062 } 1063 1064 /* get rid of resource limit on file descriptors */ 1065 static void 1066 UnlimitFiles(void) 1067 { 1068 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1069 struct rlimit rl; 1070 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1071 rl.rlim_cur != rl.rlim_max) { 1072 rl.rlim_cur = rl.rlim_max; 1073 (void)setrlimit(RLIMIT_NOFILE, &rl); 1074 } 1075 #endif 1076 } 1077 1078 static void 1079 CmdOpts_Init(void) 1080 { 1081 opts.compatMake = false; 1082 memset(&opts.debug, 0, sizeof(opts.debug)); 1083 /* opts.debug_file has already been initialized earlier */ 1084 opts.strict = false; 1085 opts.debugVflag = false; 1086 opts.checkEnvFirst = false; 1087 Lst_Init(&opts.makefiles); 1088 opts.ignoreErrors = false; /* Pay attention to non-zero returns */ 1089 opts.maxJobs = 1; 1090 opts.keepgoing = false; /* Stop on error */ 1091 opts.noRecursiveExecute = false; /* Execute all .MAKE targets */ 1092 opts.noExecute = false; /* Execute all commands */ 1093 opts.query = false; 1094 opts.noBuiltins = false; /* Read the built-in rules */ 1095 opts.silent = false; /* Print commands as executed */ 1096 opts.touch = false; 1097 opts.printVars = PVM_NONE; 1098 Lst_Init(&opts.variables); 1099 opts.parseWarnFatal = false; 1100 opts.enterFlag = false; 1101 opts.varNoExportEnv = false; 1102 Lst_Init(&opts.create); 1103 } 1104 1105 /* 1106 * Initialize MAKE and .MAKE to the path of the executable, so that it can be 1107 * found by execvp(3) and the shells, even after a chdir. 1108 * 1109 * If it's a relative path and contains a '/', resolve it to an absolute path. 1110 * Otherwise keep it as is, assuming it will be found in the PATH. 1111 */ 1112 static void 1113 InitVarMake(const char *argv0) 1114 { 1115 const char *make = argv0; 1116 char pathbuf[MAXPATHLEN]; 1117 1118 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1119 const char *abspath = cached_realpath(argv0, pathbuf); 1120 struct stat st; 1121 if (abspath != NULL && abspath[0] == '/' && 1122 stat(make, &st) == 0) 1123 make = abspath; 1124 } 1125 1126 Global_Set("MAKE", make); 1127 Global_Set(".MAKE", make); 1128 } 1129 1130 /* 1131 * Add the directories from the colon-separated syspath to defSysIncPath. 1132 * After returning, the contents of syspath is unspecified. 1133 */ 1134 static void 1135 InitDefSysIncPath(char *syspath) 1136 { 1137 static char defsyspath[] = _PATH_DEFSYSPATH; 1138 char *start, *p; 1139 1140 /* 1141 * If no user-supplied system path was given (through the -m option) 1142 * add the directories from the DEFSYSPATH (more than one may be given 1143 * as dir1:...:dirn) to the system include path. 1144 */ 1145 if (syspath == NULL || syspath[0] == '\0') 1146 syspath = defsyspath; 1147 else 1148 syspath = bmake_strdup(syspath); 1149 1150 for (start = syspath; *start != '\0'; start = p) { 1151 for (p = start; *p != '\0' && *p != ':'; p++) 1152 continue; 1153 if (*p == ':') 1154 *p++ = '\0'; 1155 1156 /* look for magic parent directory search string */ 1157 if (strncmp(start, ".../", 4) == 0) { 1158 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1159 if (dir != NULL) { 1160 (void)SearchPath_Add(defSysIncPath, dir); 1161 free(dir); 1162 } 1163 } else { 1164 (void)SearchPath_Add(defSysIncPath, start); 1165 } 1166 } 1167 1168 if (syspath != defsyspath) 1169 free(syspath); 1170 } 1171 1172 static void 1173 ReadBuiltinRules(void) 1174 { 1175 StringListNode *ln; 1176 StringList sysMkFiles = LST_INIT; 1177 1178 SearchPath_Expand( 1179 Lst_IsEmpty(&sysIncPath->dirs) ? defSysIncPath : sysIncPath, 1180 _PATH_DEFSYSMK, 1181 &sysMkFiles); 1182 if (Lst_IsEmpty(&sysMkFiles)) 1183 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1184 1185 for (ln = sysMkFiles.first; ln != NULL; ln = ln->next) 1186 if (ReadMakefile(ln->datum)) 1187 break; 1188 1189 if (ln == NULL) 1190 Fatal("%s: cannot open %s.", 1191 progname, (const char *)sysMkFiles.first->datum); 1192 1193 Lst_DoneFree(&sysMkFiles); 1194 } 1195 1196 static void 1197 InitMaxJobs(void) 1198 { 1199 char *value; 1200 int n; 1201 1202 if (bogusJflag && !opts.compatMake) { 1203 opts.compatMake = true; 1204 Parse_Error(PARSE_WARNING, 1205 "internal option \"-J\" in \"%s\" " 1206 "refers to unopened file descriptors; " 1207 "falling back to compat mode.\n" 1208 "\t" 1209 "To run the target even in -n mode, " 1210 "add the .MAKE pseudo-source to the target.\n" 1211 "\t" 1212 "To run the target in default mode only, " 1213 "add a ${:D make} marker to a target's command. " 1214 "(This marker expression expands to an empty string.)\n" 1215 "\t" 1216 "To make the sub-make run in compat mode, add -B to " 1217 "its invocation." 1218 "To make the sub-make independent from the parent make, " 1219 "unset the MAKEFLAGS environment variable in the " 1220 "target's commands.\n", 1221 curdir); 1222 PrintStackTrace(true); 1223 return; 1224 } 1225 if (forceJobs || opts.compatMake || 1226 !Var_Exists(SCOPE_GLOBAL, ".MAKE.JOBS")) 1227 return; 1228 1229 value = Var_Subst("${.MAKE.JOBS}", SCOPE_GLOBAL, VARE_EVAL); 1230 /* TODO: handle errors */ 1231 n = (int)strtol(value, NULL, 0); 1232 if (n < 1) { 1233 (void)fprintf(stderr, 1234 "%s: illegal value for .MAKE.JOBS " 1235 "-- must be positive integer!\n", 1236 progname); 1237 exit(2); /* Not 1 so -q can distinguish error */ 1238 } 1239 1240 if (n != opts.maxJobs) { 1241 Global_Append(MAKEFLAGS, "-j"); 1242 Global_Append(MAKEFLAGS, value); 1243 } 1244 1245 opts.maxJobs = n; 1246 maxJobTokens = opts.maxJobs; 1247 forceJobs = true; 1248 free(value); 1249 } 1250 1251 /* 1252 * For compatibility, look at the directories in the VPATH variable 1253 * and add them to the search path, if the variable is defined. The 1254 * variable's value is in the same format as the PATH environment 1255 * variable, i.e. <directory>:<directory>:<directory>... 1256 */ 1257 static void 1258 InitVpath(void) 1259 { 1260 char *vpath, savec, *path; 1261 if (!Var_Exists(SCOPE_CMDLINE, "VPATH")) 1262 return; 1263 1264 vpath = Var_Subst("${VPATH}", SCOPE_CMDLINE, VARE_EVAL); 1265 /* TODO: handle errors */ 1266 path = vpath; 1267 do { 1268 char *p; 1269 /* skip to end of directory */ 1270 for (p = path; *p != ':' && *p != '\0'; p++) 1271 continue; 1272 /* Save terminator character so know when to stop */ 1273 savec = *p; 1274 *p = '\0'; 1275 /* Add directory to search path */ 1276 (void)SearchPath_Add(&dirSearchPath, path); 1277 *p = savec; 1278 path = p + 1; 1279 } while (savec == ':'); 1280 free(vpath); 1281 } 1282 1283 static void 1284 ReadAllMakefiles(const StringList *makefiles) 1285 { 1286 StringListNode *ln; 1287 1288 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1289 const char *fname = ln->datum; 1290 if (!ReadMakefile(fname)) 1291 Fatal("%s: cannot open %s.", progname, fname); 1292 } 1293 } 1294 1295 static void 1296 ReadFirstDefaultMakefile(void) 1297 { 1298 StringList makefiles = LST_INIT; 1299 StringListNode *ln; 1300 char *prefs = Var_Subst("${.MAKE.MAKEFILE_PREFERENCE}", 1301 SCOPE_CMDLINE, VARE_EVAL); 1302 /* TODO: handle errors */ 1303 1304 AppendWords(&makefiles, prefs); 1305 1306 for (ln = makefiles.first; ln != NULL; ln = ln->next) 1307 if (ReadMakefile(ln->datum)) 1308 break; 1309 1310 Lst_Done(&makefiles); 1311 free(prefs); 1312 } 1313 1314 /* 1315 * Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1316 * Initialize a few modules. 1317 * Parse the arguments from MAKEFLAGS and the command line. 1318 */ 1319 static void 1320 main_Init(int argc, char **argv) 1321 { 1322 struct stat sa; 1323 const char *machine; 1324 const char *machine_arch; 1325 char *syspath = getenv("MAKESYSPATH"); 1326 struct utsname utsname; 1327 1328 /* default to writing debug to stderr */ 1329 opts.debug_file = stderr; 1330 1331 Str_Intern_Init(); 1332 HashTable_Init(&cached_realpaths); 1333 1334 #ifdef SIGINFO 1335 (void)bmake_signal(SIGINFO, siginfo); 1336 #endif 1337 1338 InitRandom(); 1339 1340 progname = str_basename(argv[0]); 1341 1342 UnlimitFiles(); 1343 1344 if (uname(&utsname) == -1) { 1345 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1346 strerror(errno)); 1347 exit(2); 1348 } 1349 1350 machine = InitVarMachine(&utsname); 1351 machine_arch = InitVarMachineArch(); 1352 1353 myPid = getpid(); 1354 1355 /* Just in case MAKEOBJDIR wants us to do something tricky. */ 1356 Targ_Init(); 1357 Global_Set_ReadOnly(".MAKE.OS", utsname.sysname); 1358 Global_Set("MACHINE", machine); 1359 Global_Set("MACHINE_ARCH", machine_arch); 1360 #ifdef MAKE_VERSION 1361 Global_Set("MAKE_VERSION", MAKE_VERSION); 1362 #endif 1363 Global_Set_ReadOnly(".newline", "\n"); 1364 #ifndef MAKEFILE_PREFERENCE_LIST 1365 /* This is the traditional preference for makefiles. */ 1366 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1367 #endif 1368 Global_Set(".MAKE.MAKEFILE_PREFERENCE", MAKEFILE_PREFERENCE_LIST); 1369 Global_Set(".MAKE.DEPENDFILE", ".depend"); 1370 /* Tell makefiles like jobs.mk whether we support -jC */ 1371 #ifdef _SC_NPROCESSORS_ONLN 1372 Global_Set_ReadOnly(".MAKE.JOBS.C", "yes"); 1373 #else 1374 Global_Set_ReadOnly(".MAKE.JOBS.C", "no"); 1375 #endif 1376 1377 CmdOpts_Init(); 1378 allPrecious = false; /* Remove targets when interrupted */ 1379 deleteOnError = false; /* Historical default behavior */ 1380 jobsRunning = false; 1381 1382 maxJobTokens = opts.maxJobs; 1383 ignorePWD = false; 1384 1385 /* 1386 * Initialize the parsing, directory and variable modules to prepare 1387 * for the reading of inclusion paths and variable settings on the 1388 * command line 1389 */ 1390 1391 /* 1392 * Initialize various variables. 1393 * MAKE also gets this name, for compatibility 1394 * .MAKEFLAGS gets set to the empty string just in case. 1395 * MFLAGS also gets initialized empty, for compatibility. 1396 */ 1397 Parse_Init(); 1398 InitVarMake(argv[0]); 1399 Global_Set(MAKEFLAGS, ""); 1400 Global_Set(".MAKEOVERRIDES", ""); 1401 Global_Set("MFLAGS", ""); 1402 Global_Set(".ALLTARGETS", ""); 1403 Global_Set_ReadOnly(".MAKE.LEVEL.ENV", MAKE_LEVEL_ENV); 1404 1405 /* Set some other useful variables. */ 1406 { 1407 char buf[64]; 1408 const char *ep = getenv(MAKE_LEVEL_ENV); 1409 1410 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1411 if (makelevel < 0) 1412 makelevel = 0; 1413 snprintf(buf, sizeof buf, "%d", makelevel); 1414 Global_Set(".MAKE.LEVEL", buf); 1415 snprintf(buf, sizeof buf, "%u", myPid); 1416 Global_Set_ReadOnly(".MAKE.PID", buf); 1417 snprintf(buf, sizeof buf, "%u", getppid()); 1418 Global_Set_ReadOnly(".MAKE.PPID", buf); 1419 snprintf(buf, sizeof buf, "%u", getuid()); 1420 Global_Set_ReadOnly(".MAKE.UID", buf); 1421 snprintf(buf, sizeof buf, "%u", getgid()); 1422 Global_Set_ReadOnly(".MAKE.GID", buf); 1423 } 1424 if (makelevel > 0) { 1425 char pn[1024]; 1426 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1427 progname = bmake_strdup(pn); 1428 } 1429 1430 #ifdef USE_META 1431 meta_init(); 1432 #endif 1433 Dir_Init(); 1434 1435 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1436 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1437 progname, strerror(errno)); 1438 exit(2); 1439 } 1440 1441 { 1442 char *makeflags = explode(getenv("MAKEFLAGS")); 1443 Main_ParseArgLine(makeflags); 1444 free(makeflags); 1445 } 1446 1447 MainParseArgs(argc, argv); 1448 1449 if (opts.enterFlag) 1450 printf("%s: Entering directory `%s'\n", progname, curdir); 1451 1452 if (stat(curdir, &sa) == -1) { 1453 (void)fprintf(stderr, "%s: %s: %s.\n", 1454 progname, curdir, strerror(errno)); 1455 exit(2); 1456 } 1457 1458 #ifndef NO_PWD_OVERRIDE 1459 HandlePWD(&sa); 1460 #endif 1461 Global_Set(".CURDIR", curdir); 1462 1463 InitObjdir(machine, machine_arch); 1464 1465 Arch_Init(); 1466 Suff_Init(); 1467 Trace_Init(tracefile); 1468 1469 defaultNode = NULL; 1470 (void)time(&now); 1471 1472 Trace_Log(MAKESTART, NULL); 1473 1474 InitVarTargets(); 1475 1476 InitDefSysIncPath(syspath); 1477 } 1478 1479 /* 1480 * Read the system makefile followed by either makefile, Makefile or the 1481 * files given by the -f option. Exit on parse errors. 1482 */ 1483 static void 1484 main_ReadFiles(void) 1485 { 1486 1487 if (Lst_IsEmpty(&sysIncPath->dirs)) 1488 SearchPath_AddAll(sysIncPath, defSysIncPath); 1489 1490 Dir_SetSYSPATH(); 1491 if (!opts.noBuiltins) 1492 ReadBuiltinRules(); 1493 1494 posix_state = PS_MAYBE_NEXT_LINE; 1495 if (!Lst_IsEmpty(&opts.makefiles)) 1496 ReadAllMakefiles(&opts.makefiles); 1497 else 1498 ReadFirstDefaultMakefile(); 1499 } 1500 1501 /* Compute the dependency graph. */ 1502 static void 1503 main_PrepareMaking(void) 1504 { 1505 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1506 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1507 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE}", 1508 SCOPE_CMDLINE, VARE_EVAL); 1509 if (makeDependfile[0] != '\0') { 1510 /* TODO: handle errors */ 1511 doing_depend = true; 1512 (void)ReadMakefile(makeDependfile); 1513 doing_depend = false; 1514 } 1515 } 1516 1517 if (enterFlagObj) 1518 printf("%s: Entering directory `%s'\n", progname, objdir); 1519 1520 MakeMode(); 1521 1522 { 1523 FStr makeflags = Var_Value(SCOPE_GLOBAL, MAKEFLAGS); 1524 Global_Append("MFLAGS", makeflags.str); 1525 FStr_Done(&makeflags); 1526 } 1527 1528 InitMaxJobs(); 1529 1530 if (!opts.compatMake && !forceJobs) 1531 opts.compatMake = true; 1532 1533 if (!opts.compatMake) 1534 TokenPool_Init(maxJobTokens, tokenPoolReader, tokenPoolWriter); 1535 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1536 tokenPoolReader, tokenPoolWriter, opts.maxJobs, maxJobTokens, 1537 opts.compatMake ? 1 : 0); 1538 1539 if (opts.printVars == PVM_NONE) 1540 Main_ExportMAKEFLAGS(true); /* initial export */ 1541 1542 InitVpath(); 1543 1544 /* 1545 * Now that all search paths have been read for suffixes et al, it's 1546 * time to add the default search path to their lists... 1547 */ 1548 Suff_ExtendPaths(); 1549 1550 /* 1551 * Propagate attributes through :: dependency lists. 1552 */ 1553 Targ_Propagate(); 1554 1555 /* print the initial graph, if the user requested it */ 1556 if (DEBUG(GRAPH1)) 1557 Targ_PrintGraph(1); 1558 } 1559 1560 /* 1561 * Make the targets, or print variables. 1562 * Return whether any of the targets is out-of-date. 1563 */ 1564 static bool 1565 main_Run(void) 1566 { 1567 if (opts.printVars != PVM_NONE) { 1568 PrintVariables(); 1569 return false; 1570 } else 1571 return MakeTargets(); 1572 } 1573 1574 /* Clean up after making the targets. */ 1575 static void 1576 main_CleanUp(void) 1577 { 1578 #ifdef CLEANUP 1579 Lst_DoneFree(&opts.variables); 1580 Lst_DoneFree(&opts.makefiles); 1581 Lst_DoneFree(&opts.create); 1582 #endif 1583 1584 if (DEBUG(GRAPH2)) 1585 Targ_PrintGraph(2); 1586 1587 Trace_Log(MAKEEND, NULL); 1588 1589 if (enterFlagObj) 1590 printf("%s: Leaving directory `%s'\n", progname, objdir); 1591 if (opts.enterFlag) 1592 printf("%s: Leaving directory `%s'\n", progname, curdir); 1593 1594 Var_Stats(); 1595 Targ_Stats(); 1596 1597 #ifdef USE_META 1598 meta_finish(); 1599 #endif 1600 #ifdef CLEANUP 1601 Suff_End(); 1602 Targ_End(); 1603 Arch_End(); 1604 Parse_End(); 1605 Dir_End(); 1606 Job_End(); 1607 #endif 1608 Trace_End(); 1609 #ifdef CLEANUP 1610 Str_Intern_End(); 1611 #endif 1612 } 1613 1614 static int 1615 main_ExitCode(bool outOfDate) 1616 { 1617 if ((opts.strict && main_errors > 0) || parseErrors > 0) 1618 return 2; /* Not 1 so -q can distinguish error */ 1619 return outOfDate ? 1 : 0; 1620 } 1621 1622 int 1623 main(int argc, char **argv) 1624 { 1625 bool outOfDate; 1626 1627 main_Init(argc, argv); 1628 main_ReadFiles(); 1629 main_PrepareMaking(); 1630 outOfDate = main_Run(); 1631 main_CleanUp(); 1632 return main_ExitCode(outOfDate); 1633 } 1634 1635 /* 1636 * Open and parse the given makefile, with all its side effects. 1637 * Return false if the file could not be opened. 1638 */ 1639 static bool 1640 ReadMakefile(const char *fname) 1641 { 1642 int fd; 1643 char *name, *path = NULL; 1644 1645 if (strcmp(fname, "-") == 0) { 1646 Parse_File("(stdin)", -1); 1647 Var_Set(SCOPE_INTERNAL, "MAKEFILE", ""); 1648 } else { 1649 if (strncmp(fname, ".../", 4) == 0) { 1650 name = Dir_FindHereOrAbove(curdir, fname + 4); 1651 if (name != NULL) { 1652 /* Dir_FindHereOrAbove returns dirname */ 1653 path = str_concat3(name, "/", 1654 str_basename(fname)); 1655 free(name); 1656 fd = open(path, O_RDONLY); 1657 if (fd != -1) { 1658 fname = path; 1659 goto found; 1660 } 1661 } 1662 } 1663 /* if we've chdir'd, rebuild the path name */ 1664 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1665 path = str_concat3(curdir, "/", fname); 1666 fd = open(path, O_RDONLY); 1667 if (fd != -1) { 1668 fname = path; 1669 goto found; 1670 } 1671 free(path); 1672 1673 /* If curdir failed, try objdir (ala .depend) */ 1674 path = str_concat3(objdir, "/", fname); 1675 fd = open(path, O_RDONLY); 1676 if (fd != -1) { 1677 fname = path; 1678 goto found; 1679 } 1680 } else { 1681 fd = open(fname, O_RDONLY); 1682 if (fd != -1) 1683 goto found; 1684 } 1685 /* look in -I and system include directories. */ 1686 name = Dir_FindFile(fname, parseIncPath); 1687 if (name == NULL) { 1688 SearchPath *sysInc = Lst_IsEmpty(&sysIncPath->dirs) 1689 ? defSysIncPath : sysIncPath; 1690 name = Dir_FindFile(fname, sysInc); 1691 } 1692 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1693 free(name); 1694 free(path); 1695 return false; 1696 } 1697 fname = name; 1698 /* 1699 * set the MAKEFILE variable desired by System V fans -- the 1700 * placement of the setting here means it gets set to the last 1701 * makefile specified, as it is set by SysV make. 1702 */ 1703 found: 1704 if (!doing_depend) 1705 Var_Set(SCOPE_INTERNAL, "MAKEFILE", fname); 1706 Parse_File(fname, fd); 1707 } 1708 free(path); 1709 return true; 1710 } 1711 1712 /* populate av for Cmd_Exec and Compat_RunCommand */ 1713 int 1714 Cmd_Argv(const char *cmd, size_t cmd_len, const char **av, size_t avsz, 1715 char *cmd_file, size_t cmd_filesz, bool eflag, bool xflag) 1716 { 1717 int ac = 0; 1718 int cmd_fd = -1; 1719 1720 if (shellPath == NULL) 1721 Shell_Init(); 1722 1723 if (cmd_file != NULL) { 1724 if (cmd_len == 0) 1725 cmd_len = strlen(cmd); 1726 1727 if (cmd_len > MAKE_CMDLEN_LIMIT) { 1728 cmd_fd = mkTempFile(NULL, cmd_file, cmd_filesz); 1729 if (cmd_fd >= 0) { 1730 ssize_t n; 1731 1732 n = write(cmd_fd, cmd, cmd_len); 1733 close(cmd_fd); 1734 if (n < (ssize_t)cmd_len) { 1735 unlink(cmd_file); 1736 cmd_fd = -1; 1737 } 1738 } 1739 } else 1740 cmd_file[0] = '\0'; 1741 } 1742 1743 if (avsz < 4 || (eflag && avsz < 5)) 1744 return -1; 1745 1746 /* The following works for any of the builtin shell specs. */ 1747 av[ac++] = shellPath; 1748 if (eflag) 1749 av[ac++] = shellErrFlag; 1750 if (cmd_fd >= 0) { 1751 if (xflag) 1752 av[ac++] = "-x"; 1753 av[ac++] = cmd_file; 1754 } else { 1755 av[ac++] = xflag ? "-xc" : "-c"; 1756 av[ac++] = cmd; 1757 } 1758 av[ac] = NULL; 1759 return ac; 1760 } 1761 1762 /* 1763 * Execute the command in cmd, and return its output (only stdout, not 1764 * stderr, possibly empty). In the output, replace newlines with spaces. 1765 */ 1766 char * 1767 Cmd_Exec(const char *cmd, char **error) 1768 { 1769 const char *args[4]; /* Arguments for invoking the shell */ 1770 int pipefds[2]; 1771 int cpid; /* Child PID */ 1772 int pid; /* PID from wait() */ 1773 int status; /* command exit status */ 1774 Buffer buf; /* buffer to store the result */ 1775 ssize_t bytes_read; 1776 char *output; 1777 char *p; 1778 int saved_errno; 1779 char cmd_file[MAXPATHLEN]; 1780 1781 DEBUG1(VAR, "Capturing the output of command \"%s\"\n", cmd); 1782 1783 if (Cmd_Argv(cmd, 0, args, 4, cmd_file, sizeof(cmd_file), false, false) < 0 1784 || pipe(pipefds) == -1) { 1785 *error = str_concat3( 1786 "Couldn't create pipe for \"", cmd, "\""); 1787 return bmake_strdup(""); 1788 } 1789 1790 Var_ReexportVars(SCOPE_GLOBAL); 1791 1792 switch (cpid = FORK_FUNCTION()) { 1793 case 0: 1794 (void)close(pipefds[0]); 1795 (void)dup2(pipefds[1], STDOUT_FILENO); 1796 (void)close(pipefds[1]); 1797 1798 (void)execv(shellPath, UNCONST(args)); 1799 _exit(1); 1800 /* NOTREACHED */ 1801 1802 case -1: 1803 *error = str_concat3("Couldn't exec \"", cmd, "\""); 1804 return bmake_strdup(""); 1805 } 1806 1807 (void)close(pipefds[1]); /* No need for the writing half */ 1808 1809 saved_errno = 0; 1810 Buf_Init(&buf); 1811 1812 do { 1813 char result[BUFSIZ]; 1814 bytes_read = read(pipefds[0], result, sizeof result); 1815 if (bytes_read > 0) 1816 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1817 } while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1818 if (bytes_read == -1) 1819 saved_errno = errno; 1820 1821 (void)close(pipefds[0]); /* Close the input side of the pipe. */ 1822 1823 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1824 JobReapChild(pid, status, false); 1825 1826 if (Buf_EndsWith(&buf, '\n')) 1827 buf.data[buf.len - 1] = '\0'; 1828 1829 output = Buf_DoneData(&buf); 1830 for (p = output; *p != '\0'; p++) 1831 if (*p == '\n') 1832 *p = ' '; 1833 1834 if (WIFSIGNALED(status)) 1835 *error = str_concat3("\"", cmd, "\" exited on a signal"); 1836 else if (WEXITSTATUS(status) != 0) { 1837 Buffer errBuf; 1838 Buf_Init(&errBuf); 1839 Buf_AddStr(&errBuf, "Command \""); 1840 Buf_AddStr(&errBuf, cmd); 1841 Buf_AddStr(&errBuf, "\" exited with status "); 1842 Buf_AddInt(&errBuf, WEXITSTATUS(status)); 1843 *error = Buf_DoneData(&errBuf); 1844 } else if (saved_errno != 0) 1845 *error = str_concat3( 1846 "Couldn't read shell's output for \"", cmd, "\""); 1847 else 1848 *error = NULL; 1849 if (cmd_file[0] != '\0') 1850 unlink(cmd_file); 1851 return output; 1852 } 1853 1854 /* 1855 * Print a printf-style error message. 1856 * 1857 * In default mode, this error message has no consequences, for compatibility 1858 * reasons, in particular it does not affect the exit status. Only in lint 1859 * mode (-dL) it does. 1860 */ 1861 void 1862 Error(const char *fmt, ...) 1863 { 1864 va_list ap; 1865 FILE *f; 1866 1867 f = opts.debug_file; 1868 if (f == stdout) 1869 f = stderr; 1870 (void)fflush(stdout); 1871 1872 for (;;) { 1873 fprintf(f, "%s: ", progname); 1874 va_start(ap, fmt); 1875 (void)vfprintf(f, fmt, ap); 1876 va_end(ap); 1877 (void)fprintf(f, "\n"); 1878 (void)fflush(f); 1879 if (f == stderr) 1880 break; 1881 f = stderr; 1882 } 1883 main_errors++; 1884 } 1885 1886 /* 1887 * Wait for any running jobs to finish, then produce an error message, 1888 * finally exit immediately. 1889 * 1890 * Exiting immediately differs from Parse_Error, which exits only after the 1891 * current top-level makefile has been parsed completely. 1892 */ 1893 void 1894 Fatal(const char *fmt, ...) 1895 { 1896 va_list ap; 1897 1898 if (jobsRunning) 1899 Job_Wait(); 1900 1901 (void)fflush(stdout); 1902 fprintf(stderr, "%s: ", progname); 1903 va_start(ap, fmt); 1904 (void)vfprintf(stderr, fmt, ap); 1905 va_end(ap); 1906 (void)fprintf(stderr, "\n"); 1907 (void)fflush(stderr); 1908 PrintStackTrace(true); 1909 1910 PrintOnError(NULL, "\n"); 1911 1912 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1913 Targ_PrintGraph(2); 1914 Trace_Log(MAKEERROR, NULL); 1915 exit(2); /* Not 1 so -q can distinguish error */ 1916 } 1917 1918 /* 1919 * Major exception once jobs are being created. 1920 * Kills all jobs, prints a message and exits. 1921 */ 1922 void 1923 Punt(const char *fmt, ...) 1924 { 1925 va_list ap; 1926 1927 (void)fflush(stdout); 1928 (void)fprintf(stderr, "%s: ", progname); 1929 va_start(ap, fmt); 1930 (void)vfprintf(stderr, fmt, ap); 1931 va_end(ap); 1932 (void)fprintf(stderr, "\n"); 1933 (void)fflush(stderr); 1934 1935 PrintOnError(NULL, "\n"); 1936 1937 DieHorribly(); 1938 } 1939 1940 /* Exit without giving a message. */ 1941 void 1942 DieHorribly(void) 1943 { 1944 if (jobsRunning) 1945 Job_AbortAll(); 1946 if (DEBUG(GRAPH2)) 1947 Targ_PrintGraph(2); 1948 Trace_Log(MAKEERROR, NULL); 1949 exit(2); /* Not 1 so -q can distinguish error */ 1950 } 1951 1952 int 1953 unlink_file(const char *file) 1954 { 1955 struct stat st; 1956 1957 if (lstat(file, &st) == -1) 1958 return -1; 1959 1960 if (S_ISDIR(st.st_mode)) { 1961 /* 1962 * POSIX says for unlink: "The path argument shall not name 1963 * a directory unless [...]". 1964 */ 1965 errno = EISDIR; 1966 return -1; 1967 } 1968 return unlink(file); 1969 } 1970 1971 static void 1972 write_all(int fd, const void *data, size_t n) 1973 { 1974 const char *mem = data; 1975 1976 while (n > 0) { 1977 ssize_t written = write(fd, mem, n); 1978 /* XXX: Should this EAGAIN be EINTR? */ 1979 if (written == -1 && errno == EAGAIN) 1980 continue; 1981 if (written == -1) 1982 break; 1983 mem += written; 1984 n -= (size_t)written; 1985 } 1986 } 1987 1988 /* Print why exec failed, avoiding stdio. */ 1989 void MAKE_ATTR_DEAD 1990 execDie(const char *func, const char *arg) 1991 { 1992 char msg[1024]; 1993 int len; 1994 1995 len = snprintf(msg, sizeof(msg), "%s: %s(%s) failed (%s)\n", 1996 progname, func, arg, strerror(errno)); 1997 write_all(STDERR_FILENO, msg, (size_t)len); 1998 _exit(1); 1999 } 2000 2001 static void 2002 purge_relative_cached_realpaths(void) 2003 { 2004 HashIter hi; 2005 bool more; 2006 2007 HashIter_Init(&hi, &cached_realpaths); 2008 more = HashIter_Next(&hi); 2009 while (more) { 2010 HashEntry *he = hi.entry; 2011 more = HashIter_Next(&hi); 2012 if (he->key[0] != '/') { 2013 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key); 2014 free(he->value); 2015 HashTable_DeleteEntry(&cached_realpaths, he); 2016 } 2017 } 2018 } 2019 2020 const char * 2021 cached_realpath(const char *pathname, char *resolved) 2022 { 2023 const char *rp; 2024 2025 if (pathname == NULL || pathname[0] == '\0') 2026 return NULL; 2027 2028 rp = HashTable_FindValue(&cached_realpaths, pathname); 2029 if (rp != NULL) { 2030 snprintf(resolved, MAXPATHLEN, "%s", rp); 2031 return resolved; 2032 } 2033 2034 rp = realpath(pathname, resolved); 2035 if (rp != NULL) { 2036 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp)); 2037 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp); 2038 return resolved; 2039 } 2040 2041 /* should we negative-cache? */ 2042 return NULL; 2043 } 2044 2045 /* 2046 * Return true if we should die without noise. 2047 * For example our failing child was a sub-make or failure happened elsewhere. 2048 */ 2049 bool 2050 shouldDieQuietly(GNode *gn, int bf) 2051 { 2052 static int quietly = -1; 2053 2054 if (quietly < 0) { 2055 if (DEBUG(JOB) || 2056 !GetBooleanExpr("${.MAKE.DIE_QUIETLY}", true)) 2057 quietly = 0; 2058 else if (bf >= 0) 2059 quietly = bf; 2060 else 2061 quietly = (gn != NULL && (gn->type & OP_MAKE)) ? 1 : 0; 2062 } 2063 return quietly != 0; 2064 } 2065 2066 static void 2067 SetErrorVars(GNode *gn) 2068 { 2069 StringListNode *ln; 2070 char sts[16]; 2071 2072 /* 2073 * We can print this even if there is no .ERROR target. 2074 */ 2075 snprintf(sts, sizeof(sts), "%d", gn->exit_status); 2076 Global_Set(".ERROR_EXIT", sts); 2077 Global_Set(".ERROR_TARGET", gn->name); 2078 Global_Delete(".ERROR_CMD"); 2079 2080 for (ln = gn->commands.first; ln != NULL; ln = ln->next) { 2081 const char *cmd = ln->datum; 2082 2083 if (cmd == NULL) 2084 break; 2085 Global_Append(".ERROR_CMD", cmd); 2086 } 2087 } 2088 2089 /* 2090 * Print some helpful information in case of an error. 2091 * The caller should exit soon after calling this function. 2092 */ 2093 void 2094 PrintOnError(GNode *gn, const char *msg) 2095 { 2096 static GNode *errorNode = NULL; 2097 StringListNode *ln; 2098 2099 if (DEBUG(HASH)) { 2100 Targ_Stats(); 2101 Var_Stats(); 2102 } 2103 2104 if (errorNode != NULL) 2105 return; /* we've been here! */ 2106 2107 printf("%s%s: stopped", msg, progname); 2108 ln = opts.create.first; 2109 if (ln != NULL || mainNode != NULL) { 2110 printf(" making \""); 2111 if (ln != NULL) { 2112 printf("%s", (const char *)ln->datum); 2113 for (ln = ln->next; ln != NULL; ln = ln->next) 2114 printf(" %s", (const char *)ln->datum); 2115 } else 2116 printf("%s", mainNode->name); 2117 printf("\""); 2118 } 2119 printf(" in %s\n", curdir); 2120 2121 /* we generally want to keep quiet if a sub-make died */ 2122 if (shouldDieQuietly(gn, -1)) 2123 return; 2124 2125 if (gn != NULL) 2126 SetErrorVars(gn); 2127 2128 { 2129 char *errorVarsValues; 2130 enum PosixState p_s = posix_state; 2131 2132 posix_state = PS_TOO_LATE; 2133 errorVarsValues = Var_Subst( 2134 "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2135 SCOPE_GLOBAL, VARE_EVAL); 2136 /* TODO: handle errors */ 2137 printf("%s", errorVarsValues); 2138 free(errorVarsValues); 2139 posix_state = p_s; 2140 } 2141 2142 fflush(stdout); 2143 2144 /* 2145 * Finally, see if there is a .ERROR target, and run it if so. 2146 */ 2147 errorNode = Targ_FindNode(".ERROR"); 2148 if (errorNode != NULL) { 2149 errorNode->type |= OP_SPECIAL; 2150 Compat_Make(errorNode, errorNode); 2151 } 2152 } 2153 2154 void 2155 Main_ExportMAKEFLAGS(bool first) 2156 { 2157 static bool once = true; 2158 enum PosixState p_s; 2159 char *flags; 2160 2161 if (once != first) 2162 return; 2163 once = false; 2164 2165 p_s = posix_state; 2166 posix_state = PS_TOO_LATE; 2167 flags = Var_Subst( 2168 "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2169 SCOPE_CMDLINE, VARE_EVAL); 2170 /* TODO: handle errors */ 2171 if (flags[0] != '\0') 2172 setenv("MAKEFLAGS", flags, 1); 2173 free(flags); 2174 posix_state = p_s; 2175 } 2176 2177 char * 2178 getTmpdir(void) 2179 { 2180 static char *tmpdir = NULL; 2181 struct stat st; 2182 2183 if (tmpdir != NULL) 2184 return tmpdir; 2185 2186 /* Honor $TMPDIR if it is valid, strip a trailing '/'. */ 2187 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP ":S,/$,,W}/", 2188 SCOPE_GLOBAL, VARE_EVAL); 2189 /* TODO: handle errors */ 2190 2191 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2192 free(tmpdir); 2193 tmpdir = bmake_strdup(_PATH_TMP); 2194 } 2195 return tmpdir; 2196 } 2197 2198 /* 2199 * Create and open a temp file using "pattern". 2200 * If tfile is provided, set it to a copy of the filename created. 2201 * Otherwise unlink the file once open. 2202 */ 2203 int 2204 mkTempFile(const char *pattern, char *tfile, size_t tfile_sz) 2205 { 2206 static char *tmpdir = NULL; 2207 char tbuf[MAXPATHLEN]; 2208 int fd; 2209 2210 if (pattern == NULL) 2211 pattern = "makeXXXXXX"; 2212 if (tmpdir == NULL) 2213 tmpdir = getTmpdir(); 2214 if (tfile == NULL) { 2215 tfile = tbuf; 2216 tfile_sz = sizeof tbuf; 2217 } 2218 2219 if (pattern[0] == '/') 2220 snprintf(tfile, tfile_sz, "%s", pattern); 2221 else 2222 snprintf(tfile, tfile_sz, "%s%s", tmpdir, pattern); 2223 2224 if ((fd = mkstemp(tfile)) < 0) 2225 Punt("Could not create temporary file %s: %s", tfile, 2226 strerror(errno)); 2227 if (tfile == tbuf) 2228 unlink(tfile); /* we just want the descriptor */ 2229 2230 return fd; 2231 } 2232 2233 /* 2234 * Convert a string representation of a boolean into a boolean value. 2235 * Anything that looks like "No", "False", "Off", "0" etc. is false, 2236 * the empty string is the fallback, everything else is true. 2237 */ 2238 bool 2239 ParseBoolean(const char *s, bool fallback) 2240 { 2241 char ch = ch_tolower(s[0]); 2242 if (ch == '\0') 2243 return fallback; 2244 if (ch == '0' || ch == 'f' || ch == 'n') 2245 return false; 2246 if (ch == 'o') 2247 return ch_tolower(s[1]) != 'f'; 2248 return true; 2249 } 2250
Indexes created Wed Sep 24 05:09:52 GMT 2025