main.c revision 1.426
1 /* $NetBSD: main.c,v 1.426 2020/11/05 17:27:16 rillig 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 * main.c -- 73 * The main file for this entire program. Exit routines etc 74 * reside here. 75 * 76 * Utility functions defined in this file: 77 * Main_ParseArgLine Takes a line of arguments, breaks them and 78 * treats them as if they were given when first 79 * invoked. Used by the parse module to implement 80 * the .MFLAGS target. 81 * 82 * Error Print a tagged error message. The global 83 * MAKE variable must have been defined. This 84 * takes a format string and optional arguments 85 * for it. 86 * 87 * Fatal Print an error message and exit. Also takes 88 * a format string and arguments for it. 89 * 90 * Punt Aborts all jobs and exits with a message. Also 91 * takes a format string and arguments for it. 92 * 93 * Finish Finish things up by printing the number of 94 * errors which occurred, as passed to it, and 95 * exiting. 96 */ 97 98 #include <sys/types.h> 99 #include <sys/time.h> 100 #include <sys/param.h> 101 #include <sys/resource.h> 102 #include <sys/stat.h> 103 #ifdef MAKE_NATIVE 104 #include <sys/sysctl.h> 105 #endif 106 #include <sys/utsname.h> 107 #include <sys/wait.h> 108 109 #include <errno.h> 110 #include <signal.h> 111 #include <stdarg.h> 112 #include <time.h> 113 114 #include "make.h" 115 #include "dir.h" 116 #include "job.h" 117 #include "pathnames.h" 118 #include "trace.h" 119 120 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 121 MAKE_RCSID("$NetBSD: main.c,v 1.426 2020/11/05 17:27:16 rillig Exp $"); 122 #if defined(MAKE_NATIVE) && !defined(lint) 123 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 " 124 "The Regents of the University of California. " 125 "All rights reserved."); 126 #endif 127 128 #ifndef DEFMAXLOCAL 129 #define DEFMAXLOCAL DEFMAXJOBS 130 #endif 131 132 CmdOpts opts; 133 time_t now; /* Time at start of make */ 134 GNode *DEFAULT; /* .DEFAULT node */ 135 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 136 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 137 138 static int maxJobTokens; /* -j argument */ 139 Boolean enterFlagObj; /* -w and objdir != srcdir */ 140 141 Boolean preserveUndefined; 142 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 143 Boolean doing_depend; /* Set while reading .depend */ 144 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 145 static const char * tracefile; 146 static int ReadMakefile(const char *); 147 static void usage(void) MAKE_ATTR_DEAD; 148 static void purge_cached_realpaths(void); 149 150 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 151 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 152 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 153 char *progname; /* the program name */ 154 char *makeDependfile; 155 pid_t myPid; 156 int makelevel; 157 158 Boolean forceJobs = FALSE; 159 static int errors = 0; 160 161 /* 162 * For compatibility with the POSIX version of MAKEFLAGS that includes 163 * all the options with out -, convert flags to -f -l -a -g -s. 164 */ 165 static char * 166 explode(const char *flags) 167 { 168 size_t len; 169 char *nf, *st; 170 const char *f; 171 172 if (flags == NULL) 173 return NULL; 174 175 for (f = flags; *f; f++) 176 if (!ch_isalpha(*f)) 177 break; 178 179 if (*f) 180 return bmake_strdup(flags); 181 182 len = strlen(flags); 183 st = nf = bmake_malloc(len * 3 + 1); 184 while (*flags) { 185 *nf++ = '-'; 186 *nf++ = *flags++; 187 *nf++ = ' '; 188 } 189 *nf = '\0'; 190 return st; 191 } 192 193 static void 194 parse_debug_option_F(const char *modules) 195 { 196 const char *mode; 197 size_t len; 198 char *fname; 199 200 if (opts.debug_file != stdout && opts.debug_file != stderr) 201 fclose(opts.debug_file); 202 203 if (*modules == '+') { 204 modules++; 205 mode = "a"; 206 } else 207 mode = "w"; 208 209 if (strcmp(modules, "stdout") == 0) { 210 opts.debug_file = stdout; 211 return; 212 } 213 if (strcmp(modules, "stderr") == 0) { 214 opts.debug_file = stderr; 215 return; 216 } 217 218 len = strlen(modules); 219 fname = bmake_malloc(len + 20); 220 memcpy(fname, modules, len + 1); 221 222 /* Let the filename be modified by the pid */ 223 if (strcmp(fname + len - 3, ".%d") == 0) 224 snprintf(fname + len - 2, 20, "%d", getpid()); 225 226 opts.debug_file = fopen(fname, mode); 227 if (!opts.debug_file) { 228 fprintf(stderr, "Cannot open debug file %s\n", 229 fname); 230 usage(); 231 } 232 free(fname); 233 } 234 235 static void 236 parse_debug_options(const char *argvalue) 237 { 238 const char *modules; 239 240 for (modules = argvalue; *modules; ++modules) { 241 switch (*modules) { 242 case '0': /* undocumented, only intended for tests */ 243 opts.debug &= DEBUG_LINT; 244 break; 245 case 'A': 246 opts.debug = ~(0|DEBUG_LINT); 247 break; 248 case 'a': 249 opts.debug |= DEBUG_ARCH; 250 break; 251 case 'C': 252 opts.debug |= DEBUG_CWD; 253 break; 254 case 'c': 255 opts.debug |= DEBUG_COND; 256 break; 257 case 'd': 258 opts.debug |= DEBUG_DIR; 259 break; 260 case 'e': 261 opts.debug |= DEBUG_ERROR; 262 break; 263 case 'f': 264 opts.debug |= DEBUG_FOR; 265 break; 266 case 'g': 267 if (modules[1] == '1') { 268 opts.debug |= DEBUG_GRAPH1; 269 ++modules; 270 } 271 else if (modules[1] == '2') { 272 opts.debug |= DEBUG_GRAPH2; 273 ++modules; 274 } 275 else if (modules[1] == '3') { 276 opts.debug |= DEBUG_GRAPH3; 277 ++modules; 278 } 279 break; 280 case 'h': 281 opts.debug |= DEBUG_HASH; 282 break; 283 case 'j': 284 opts.debug |= DEBUG_JOB; 285 break; 286 case 'L': 287 opts.debug |= DEBUG_LINT; 288 break; 289 case 'l': 290 opts.debug |= DEBUG_LOUD; 291 break; 292 case 'M': 293 opts.debug |= DEBUG_META; 294 break; 295 case 'm': 296 opts.debug |= DEBUG_MAKE; 297 break; 298 case 'n': 299 opts.debug |= DEBUG_SCRIPT; 300 break; 301 case 'p': 302 opts.debug |= DEBUG_PARSE; 303 break; 304 case 's': 305 opts.debug |= DEBUG_SUFF; 306 break; 307 case 't': 308 opts.debug |= DEBUG_TARG; 309 break; 310 case 'V': 311 opts.debugVflag = TRUE; 312 break; 313 case 'v': 314 opts.debug |= DEBUG_VAR; 315 break; 316 case 'x': 317 opts.debug |= DEBUG_SHELL; 318 break; 319 case 'F': 320 parse_debug_option_F(modules + 1); 321 goto debug_setbuf; 322 default: 323 (void)fprintf(stderr, 324 "%s: illegal argument to d option -- %c\n", 325 progname, *modules); 326 usage(); 327 } 328 } 329 debug_setbuf: 330 /* 331 * Make the debug_file unbuffered, and make 332 * stdout line buffered (unless debugfile == stdout). 333 */ 334 setvbuf(opts.debug_file, NULL, _IONBF, 0); 335 if (opts.debug_file != stdout) { 336 setvbuf(stdout, NULL, _IOLBF, 0); 337 } 338 } 339 340 /* 341 * does path contain any relative components 342 */ 343 static Boolean 344 is_relpath(const char *path) 345 { 346 const char *cp; 347 348 if (path[0] != '/') 349 return TRUE; 350 cp = path; 351 while ((cp = strstr(cp, "/.")) != NULL) { 352 cp += 2; 353 if (cp[0] == '/' || cp[0] == '\0') 354 return TRUE; 355 else if (cp[0] == '.') { 356 if (cp[1] == '/' || cp[1] == '\0') 357 return TRUE; 358 } 359 } 360 return FALSE; 361 } 362 363 static void 364 MainParseArgChdir(const char *argvalue) 365 { 366 struct stat sa, sb; 367 368 if (chdir(argvalue) == -1) { 369 (void)fprintf(stderr, "%s: chdir %s: %s\n", 370 progname, argvalue, strerror(errno)); 371 exit(1); 372 } 373 if (getcwd(curdir, MAXPATHLEN) == NULL) { 374 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 375 exit(2); 376 } 377 if (!is_relpath(argvalue) && 378 stat(argvalue, &sa) != -1 && 379 stat(curdir, &sb) != -1 && 380 sa.st_ino == sb.st_ino && 381 sa.st_dev == sb.st_dev) 382 strncpy(curdir, argvalue, MAXPATHLEN); 383 ignorePWD = TRUE; 384 } 385 386 static void 387 MainParseArgJobsInternal(const char *argvalue) 388 { 389 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 390 (void)fprintf(stderr, 391 "%s: internal error -- J option malformed (%s)\n", 392 progname, argvalue); 393 usage(); 394 } 395 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 396 (fcntl(jp_1, F_GETFD, 0) < 0)) { 397 #if 0 398 (void)fprintf(stderr, 399 "%s: ###### warning -- J descriptors were closed!\n", 400 progname); 401 exit(2); 402 #endif 403 jp_0 = -1; 404 jp_1 = -1; 405 opts.compatMake = TRUE; 406 } else { 407 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 408 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 409 } 410 } 411 412 static void 413 MainParseArgJobs(const char *argvalue) 414 { 415 char *p; 416 417 forceJobs = TRUE; 418 opts.maxJobs = (int)strtol(argvalue, &p, 0); 419 if (*p != '\0' || opts.maxJobs < 1) { 420 (void)fprintf(stderr, 421 "%s: illegal argument to -j -- must be positive integer!\n", 422 progname); 423 exit(1); /* XXX: why not 2? */ 424 } 425 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 426 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 427 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 428 maxJobTokens = opts.maxJobs; 429 } 430 431 static void 432 MainParseArgSysInc(const char *argvalue) 433 { 434 /* look for magic parent directory search string */ 435 if (strncmp(".../", argvalue, 4) == 0) { 436 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 437 if (found_path == NULL) 438 return; 439 (void)Dir_AddDir(sysIncPath, found_path); 440 free(found_path); 441 } else { 442 (void)Dir_AddDir(sysIncPath, argvalue); 443 } 444 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 445 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 446 } 447 448 static Boolean 449 MainParseArg(char c, const char *argvalue) 450 { 451 switch (c) { 452 case '\0': 453 break; 454 case 'B': 455 opts.compatMake = TRUE; 456 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 457 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 458 break; 459 case 'C': 460 MainParseArgChdir(argvalue); 461 break; 462 case 'D': 463 if (argvalue[0] == '\0') return FALSE; 464 Var_Set(argvalue, "1", VAR_GLOBAL); 465 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 466 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 467 break; 468 case 'I': 469 Parse_AddIncludeDir(argvalue); 470 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 471 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 472 break; 473 case 'J': 474 MainParseArgJobsInternal(argvalue); 475 break; 476 case 'N': 477 opts.noExecute = TRUE; 478 opts.noRecursiveExecute = TRUE; 479 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 480 break; 481 case 'S': 482 opts.keepgoing = FALSE; 483 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 484 break; 485 case 'T': 486 tracefile = bmake_strdup(argvalue); 487 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 488 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 489 break; 490 case 'V': 491 case 'v': 492 opts.printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 493 Lst_Append(opts.variables, bmake_strdup(argvalue)); 494 /* XXX: Why always -V? */ 495 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 496 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 497 break; 498 case 'W': 499 opts.parseWarnFatal = TRUE; 500 break; 501 case 'X': 502 opts.varNoExportEnv = TRUE; 503 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 504 break; 505 case 'd': 506 /* If '-d-opts' don't pass to children */ 507 if (argvalue[0] == '-') 508 argvalue++; 509 else { 510 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 511 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 512 } 513 parse_debug_options(argvalue); 514 break; 515 case 'e': 516 opts.checkEnvFirst = TRUE; 517 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 518 break; 519 case 'f': 520 Lst_Append(opts.makefiles, bmake_strdup(argvalue)); 521 break; 522 case 'i': 523 opts.ignoreErrors = TRUE; 524 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 525 break; 526 case 'j': 527 MainParseArgJobs(argvalue); 528 break; 529 case 'k': 530 opts.keepgoing = TRUE; 531 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 532 break; 533 case 'm': 534 MainParseArgSysInc(argvalue); 535 break; 536 case 'n': 537 opts.noExecute = TRUE; 538 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 539 break; 540 case 'q': 541 opts.queryFlag = TRUE; 542 /* Kind of nonsensical, wot? */ 543 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 544 break; 545 case 'r': 546 opts.noBuiltins = TRUE; 547 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 548 break; 549 case 's': 550 opts.beSilent = TRUE; 551 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 552 break; 553 case 't': 554 opts.touchFlag = TRUE; 555 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 556 break; 557 case 'w': 558 opts.enterFlag = TRUE; 559 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 560 break; 561 default: 562 case '?': 563 usage(); 564 } 565 return TRUE; 566 } 567 568 /* Parse the given arguments. Called from main() and from 569 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 570 * 571 * The arguments must be treated as read-only and will be freed after the 572 * call. 573 * 574 * XXX: Deal with command line overriding .MAKEFLAGS in makefile */ 575 static void 576 MainParseArgs(int argc, char **argv) 577 { 578 char c; 579 int arginc; 580 char *argvalue; 581 char *optscan; 582 Boolean inOption, dashDash = FALSE; 583 584 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 585 /* Can't actually use getopt(3) because rescanning is not portable */ 586 587 rearg: 588 inOption = FALSE; 589 optscan = NULL; 590 while (argc > 1) { 591 const char *optspec; 592 if (!inOption) 593 optscan = argv[1]; 594 c = *optscan++; 595 arginc = 0; 596 if (inOption) { 597 if (c == '\0') { 598 ++argv; 599 --argc; 600 inOption = FALSE; 601 continue; 602 } 603 } else { 604 if (c != '-' || dashDash) 605 break; 606 inOption = TRUE; 607 c = *optscan++; 608 } 609 /* '-' found at some earlier point */ 610 optspec = strchr(optspecs, c); 611 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 612 /* -<something> found, and <something> should have an arg */ 613 inOption = FALSE; 614 arginc = 1; 615 argvalue = optscan; 616 if (*argvalue == '\0') { 617 if (argc < 3) 618 goto noarg; 619 argvalue = argv[2]; 620 arginc = 2; 621 } 622 } else { 623 argvalue = NULL; 624 } 625 switch (c) { 626 case '\0': 627 arginc = 1; 628 inOption = FALSE; 629 break; 630 case '-': 631 dashDash = TRUE; 632 break; 633 default: 634 if (!MainParseArg(c, argvalue)) 635 goto noarg; 636 } 637 argv += arginc; 638 argc -= arginc; 639 } 640 641 /* 642 * See if the rest of the arguments are variable assignments and 643 * perform them if so. Else take them to be targets and stuff them 644 * on the end of the "create" list. 645 */ 646 for (; argc > 1; ++argv, --argc) { 647 VarAssign var; 648 if (Parse_IsVar(argv[1], &var)) { 649 Parse_DoVar(&var, VAR_CMDLINE); 650 } else { 651 if (!*argv[1]) 652 Punt("illegal (null) argument."); 653 if (*argv[1] == '-' && !dashDash) 654 goto rearg; 655 Lst_Append(opts.create, bmake_strdup(argv[1])); 656 } 657 } 658 659 return; 660 noarg: 661 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 662 progname, c); 663 usage(); 664 } 665 666 /* Break a line of arguments into words and parse them. 667 * 668 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 669 * by main() when reading the MAKEFLAGS environment variable. */ 670 void 671 Main_ParseArgLine(const char *line) 672 { 673 Words words; 674 void *p1; 675 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 676 char *buf; 677 678 if (line == NULL) 679 return; 680 for (; *line == ' '; ++line) 681 continue; 682 if (!*line) 683 return; 684 685 buf = str_concat3(argv0, " ", line); 686 free(p1); 687 688 words = Str_Words(buf, TRUE); 689 if (words.words == NULL) { 690 Error("Unterminated quoted string [%s]", buf); 691 free(buf); 692 return; 693 } 694 free(buf); 695 MainParseArgs((int)words.len, words.words); 696 697 Words_Free(words); 698 } 699 700 Boolean 701 Main_SetObjdir(const char *fmt, ...) 702 { 703 struct stat sb; 704 char *path; 705 char buf[MAXPATHLEN + 1]; 706 char buf2[MAXPATHLEN + 1]; 707 Boolean rc = FALSE; 708 va_list ap; 709 710 va_start(ap, fmt); 711 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 712 va_end(ap); 713 714 if (path[0] != '/') { 715 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 716 path = buf2; 717 } 718 719 /* look for the directory and try to chdir there */ 720 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 721 /* if not .CURDIR it must be writable */ 722 if ((strcmp(path, curdir) != 0 && access(path, W_OK) != 0) || 723 chdir(path)) { 724 (void)fprintf(stderr, "make warning: %s: %s.\n", 725 path, strerror(errno)); 726 } else { 727 snprintf(objdir, sizeof objdir, "%s", path); 728 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 729 setenv("PWD", objdir, 1); 730 Dir_InitDot(); 731 purge_cached_realpaths(); 732 rc = TRUE; 733 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 734 enterFlagObj = TRUE; 735 } 736 } 737 738 return rc; 739 } 740 741 static Boolean 742 Main_SetVarObjdir(const char *var, const char *suffix) 743 { 744 void *path_freeIt; 745 const char *path = Var_Value(var, VAR_CMDLINE, &path_freeIt); 746 const char *xpath; 747 char *xpath_freeIt; 748 749 if (path == NULL || path[0] == '\0') { 750 bmake_free(path_freeIt); 751 return FALSE; 752 } 753 754 /* expand variable substitutions */ 755 xpath = path; 756 xpath_freeIt = NULL; 757 if (strchr(path, '$') != 0) { 758 (void)Var_Subst(path, VAR_GLOBAL, VARE_WANTRES, &xpath_freeIt); 759 /* TODO: handle errors */ 760 xpath = xpath_freeIt; 761 } 762 763 (void)Main_SetObjdir("%s%s", xpath, suffix); 764 765 bmake_free(xpath_freeIt); 766 bmake_free(path_freeIt); 767 return TRUE; 768 } 769 770 /* Read and parse the makefile. 771 * Return TRUE if reading the makefile succeeded. */ 772 static int 773 ReadMakefileSucceeded(void *fname, void *unused) 774 { 775 return ReadMakefile(fname) == 0; 776 } 777 778 int 779 str2Lst_Append(StringList *lp, char *str, const char *sep) 780 { 781 char *cp; 782 int n; 783 784 if (!sep) 785 sep = " \t"; 786 787 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 788 Lst_Append(lp, cp); 789 n++; 790 } 791 return n; 792 } 793 794 #ifdef SIGINFO 795 /*ARGSUSED*/ 796 static void 797 siginfo(int signo MAKE_ATTR_UNUSED) 798 { 799 char dir[MAXPATHLEN]; 800 char str[2 * MAXPATHLEN]; 801 int len; 802 if (getcwd(dir, sizeof dir) == NULL) 803 return; 804 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 805 if (len > 0) 806 (void)write(STDERR_FILENO, str, (size_t)len); 807 } 808 #endif 809 810 /* 811 * Allow makefiles some control over the mode we run in. 812 */ 813 void 814 MakeMode(const char *mode) 815 { 816 char *mode_freeIt = NULL; 817 818 if (mode == NULL) { 819 (void)Var_Subst("${" MAKE_MODE ":tl}", 820 VAR_GLOBAL, VARE_WANTRES, &mode_freeIt); 821 /* TODO: handle errors */ 822 mode = mode_freeIt; 823 } 824 825 if (mode[0] != '\0') { 826 if (strstr(mode, "compat")) { 827 opts.compatMake = TRUE; 828 forceJobs = FALSE; 829 } 830 #if USE_META 831 if (strstr(mode, "meta")) 832 meta_mode_init(mode); 833 #endif 834 } 835 836 free(mode_freeIt); 837 } 838 839 static void 840 PrintVar(const char *varname, Boolean expandVars) 841 { 842 if (strchr(varname, '$')) { 843 char *evalue; 844 (void)Var_Subst(varname, VAR_GLOBAL, VARE_WANTRES, &evalue); 845 /* TODO: handle errors */ 846 printf("%s\n", evalue); 847 bmake_free(evalue); 848 849 } else if (expandVars) { 850 char *expr = str_concat3("${", varname, "}"); 851 char *evalue; 852 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &evalue); 853 /* TODO: handle errors */ 854 free(expr); 855 printf("%s\n", evalue); 856 bmake_free(evalue); 857 858 } else { 859 void *freeIt; 860 const char *value = Var_Value(varname, VAR_GLOBAL, &freeIt); 861 printf("%s\n", value ? value : ""); 862 bmake_free(freeIt); 863 } 864 } 865 866 static void 867 doPrintVars(void) 868 { 869 StringListNode *ln; 870 Boolean expandVars; 871 872 if (opts.printVars == EXPAND_VARS) 873 expandVars = TRUE; 874 else if (opts.debugVflag) 875 expandVars = FALSE; 876 else 877 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 878 879 for (ln = opts.variables->first; ln != NULL; ln = ln->next) { 880 const char *varname = ln->datum; 881 PrintVar(varname, expandVars); 882 } 883 } 884 885 static Boolean 886 runTargets(void) 887 { 888 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 889 Boolean outOfDate; /* FALSE if all targets up to date */ 890 891 /* 892 * Have now read the entire graph and need to make a list of 893 * targets to create. If none was given on the command line, 894 * we consult the parsing module to find the main target(s) 895 * to create. 896 */ 897 if (Lst_IsEmpty(opts.create)) 898 targs = Parse_MainName(); 899 else 900 targs = Targ_FindList(opts.create); 901 902 if (!opts.compatMake) { 903 /* 904 * Initialize job module before traversing the graph 905 * now that any .BEGIN and .END targets have been read. 906 * This is done only if the -q flag wasn't given 907 * (to prevent the .BEGIN from being executed should 908 * it exist). 909 */ 910 if (!opts.queryFlag) { 911 Job_Init(); 912 jobsRunning = TRUE; 913 } 914 915 /* Traverse the graph, checking on all the targets */ 916 outOfDate = Make_Run(targs); 917 } else { 918 /* 919 * Compat_Init will take care of creating all the 920 * targets as well as initializing the module. 921 */ 922 Compat_Run(targs); 923 outOfDate = FALSE; 924 } 925 Lst_Free(targs); 926 return outOfDate; 927 } 928 929 /* 930 * Set up the .TARGETS variable to contain the list of targets to be 931 * created. If none specified, make the variable empty -- the parser 932 * will fill the thing in with the default or .MAIN target. 933 */ 934 static void 935 InitVarTargets(void) 936 { 937 StringListNode *ln; 938 939 if (Lst_IsEmpty(opts.create)) { 940 Var_Set(".TARGETS", "", VAR_GLOBAL); 941 return; 942 } 943 944 for (ln = opts.create->first; ln != NULL; ln = ln->next) { 945 char *name = ln->datum; 946 Var_Append(".TARGETS", name, VAR_GLOBAL); 947 } 948 } 949 950 static void 951 InitRandom(void) 952 { 953 struct timeval tv; 954 955 gettimeofday(&tv, NULL); 956 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 957 } 958 959 static const char * 960 init_machine(const struct utsname *utsname) 961 { 962 const char *machine = getenv("MACHINE"); 963 if (machine != NULL) 964 return machine; 965 966 #ifdef MAKE_NATIVE 967 return utsname->machine; 968 #else 969 #ifdef MAKE_MACHINE 970 return MAKE_MACHINE; 971 #else 972 return "unknown"; 973 #endif 974 #endif 975 } 976 977 static const char * 978 init_machine_arch(void) 979 { 980 const char *env = getenv("MACHINE_ARCH"); 981 if (env != NULL) 982 return env; 983 984 #ifdef MAKE_NATIVE 985 { 986 struct utsname utsname; 987 static char machine_arch_buf[sizeof utsname.machine]; 988 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 989 size_t len = sizeof machine_arch_buf; 990 991 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 992 &len, NULL, 0) < 0) { 993 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 994 strerror(errno)); 995 exit(2); 996 } 997 998 return machine_arch_buf; 999 } 1000 #else 1001 #ifndef MACHINE_ARCH 1002 #ifdef MAKE_MACHINE_ARCH 1003 return MAKE_MACHINE_ARCH; 1004 #else 1005 return "unknown"; 1006 #endif 1007 #else 1008 return MACHINE_ARCH; 1009 #endif 1010 #endif 1011 } 1012 1013 #ifndef NO_PWD_OVERRIDE 1014 /* 1015 * All this code is so that we know where we are when we start up 1016 * on a different machine with pmake. 1017 * 1018 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1019 * since the value of curdir can vary depending on how we got 1020 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1021 * or via subdir.mk in which case its likely a shell which does 1022 * not provide it. 1023 * 1024 * So, to stop it breaking this case only, we ignore PWD if 1025 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1026 */ 1027 static void 1028 HandlePWD(const struct stat *curdir_st) 1029 { 1030 char *pwd; 1031 void *prefix_freeIt, *makeobjdir_freeIt; 1032 const char *makeobjdir; 1033 struct stat pwd_st; 1034 1035 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1036 return; 1037 1038 if (Var_Value("MAKEOBJDIRPREFIX", VAR_CMDLINE, &prefix_freeIt) != NULL) { 1039 bmake_free(prefix_freeIt); 1040 return; 1041 } 1042 1043 makeobjdir = Var_Value("MAKEOBJDIR", VAR_CMDLINE, &makeobjdir_freeIt); 1044 if (makeobjdir != NULL && strchr(makeobjdir, '$') != NULL) 1045 goto ignore_pwd; 1046 1047 if (stat(pwd, &pwd_st) == 0 && 1048 curdir_st->st_ino == pwd_st.st_ino && 1049 curdir_st->st_dev == pwd_st.st_dev) 1050 (void)strncpy(curdir, pwd, MAXPATHLEN); 1051 1052 ignore_pwd: 1053 bmake_free(makeobjdir_freeIt); 1054 } 1055 #endif 1056 1057 /* 1058 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1059 * MAKEOBJDIR is set in the environment, try only that value 1060 * and fall back to .CURDIR if it does not exist. 1061 * 1062 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1063 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1064 * of these paths exist, just use .CURDIR. 1065 */ 1066 static void 1067 InitObjdir(const char *machine, const char *machine_arch) 1068 { 1069 Dir_InitDir(curdir); 1070 (void)Main_SetObjdir("%s", curdir); 1071 1072 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1073 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1074 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1075 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1076 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1077 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1078 } 1079 1080 /* get rid of resource limit on file descriptors */ 1081 static void 1082 UnlimitFiles(void) 1083 { 1084 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1085 struct rlimit rl; 1086 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1087 rl.rlim_cur != rl.rlim_max) { 1088 rl.rlim_cur = rl.rlim_max; 1089 (void)setrlimit(RLIMIT_NOFILE, &rl); 1090 } 1091 #endif 1092 } 1093 1094 static void 1095 CmdOpts_Init(void) 1096 { 1097 opts.compatMake = FALSE; /* No compat mode */ 1098 opts.debug = 0; /* No debug verbosity, please. */ 1099 /* opts.debug_file has been initialized earlier */ 1100 opts.debugVflag = FALSE; 1101 opts.checkEnvFirst = FALSE; 1102 opts.makefiles = Lst_New(); 1103 opts.ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1104 opts.maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1105 opts.keepgoing = FALSE; /* Stop on error */ 1106 opts.noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1107 opts.noExecute = FALSE; /* Execute all commands */ 1108 opts.queryFlag = FALSE; /* This is not just a check-run */ 1109 opts.noBuiltins = FALSE; /* Read the built-in rules */ 1110 opts.beSilent = FALSE; /* Print commands as executed */ 1111 opts.touchFlag = FALSE; /* Actually update targets */ 1112 opts.printVars = 0; 1113 opts.variables = Lst_New(); 1114 opts.parseWarnFatal = FALSE; 1115 opts.enterFlag = FALSE; 1116 opts.varNoExportEnv = FALSE; 1117 opts.create = Lst_New(); 1118 } 1119 1120 /* Initialize MAKE and .MAKE to the path of the executable, so that it can be 1121 * found by execvp(3) and the shells, even after a chdir. 1122 * 1123 * If it's a relative path and contains a '/', resolve it to an absolute path. 1124 * Otherwise keep it as is, assuming it will be found in the PATH. */ 1125 static void 1126 InitVarMake(const char *argv0) 1127 { 1128 const char *make = argv0; 1129 1130 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1131 char pathbuf[MAXPATHLEN]; 1132 const char *abs = cached_realpath(argv0, pathbuf); 1133 struct stat st; 1134 if (abs != NULL && abs[0] == '/' && stat(make, &st) == 0) 1135 make = abs; 1136 } 1137 1138 Var_Set("MAKE", make, VAR_GLOBAL); 1139 Var_Set(".MAKE", make, VAR_GLOBAL); 1140 } 1141 1142 static void 1143 InitDefSysIncPath(char *syspath) 1144 { 1145 static char defsyspath[] = _PATH_DEFSYSPATH; 1146 char *start, *cp; 1147 1148 /* 1149 * If no user-supplied system path was given (through the -m option) 1150 * add the directories from the DEFSYSPATH (more than one may be given 1151 * as dir1:...:dirn) to the system include path. 1152 */ 1153 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1154 if (syspath == NULL || syspath[0] == '\0') 1155 syspath = defsyspath; 1156 else 1157 syspath = bmake_strdup(syspath); 1158 1159 for (start = syspath; *start != '\0'; start = cp) { 1160 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1161 continue; 1162 if (*cp == ':') { 1163 *cp++ = '\0'; 1164 } 1165 /* look for magic parent directory search string */ 1166 if (strncmp(".../", start, 4) != 0) { 1167 (void)Dir_AddDir(defSysIncPath, start); 1168 } else { 1169 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1170 if (dir != NULL) { 1171 (void)Dir_AddDir(defSysIncPath, dir); 1172 free(dir); 1173 } 1174 } 1175 } 1176 1177 if (syspath != defsyspath) 1178 free(syspath); 1179 } 1180 1181 static void 1182 ReadBuiltinRules(void) 1183 { 1184 StringList *sysMkPath = Lst_New(); 1185 Dir_Expand(_PATH_DEFSYSMK, 1186 Lst_IsEmpty(sysIncPath) ? defSysIncPath : sysIncPath, 1187 sysMkPath); 1188 if (Lst_IsEmpty(sysMkPath)) 1189 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1190 if (!Lst_ForEachUntil(sysMkPath, ReadMakefileSucceeded, NULL)) 1191 Fatal("%s: cannot open %s.", progname, 1192 (char *)sysMkPath->first->datum); 1193 /* XXX: sysMkPath is not freed */ 1194 } 1195 1196 static void 1197 InitMaxJobs(void) 1198 { 1199 char *value; 1200 int n; 1201 1202 if (forceJobs || opts.compatMake || 1203 !Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) 1204 return; 1205 1206 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1207 /* TODO: handle errors */ 1208 n = (int)strtol(value, NULL, 0); 1209 if (n < 1) { 1210 (void)fprintf(stderr, 1211 "%s: illegal value for .MAKE.JOBS " 1212 "-- must be positive integer!\n", 1213 progname); 1214 exit(1); 1215 } 1216 1217 if (n != opts.maxJobs) { 1218 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1219 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1220 } 1221 1222 opts.maxJobs = n; 1223 maxJobTokens = opts.maxJobs; 1224 forceJobs = TRUE; 1225 free(value); 1226 } 1227 1228 /* 1229 * For compatibility, look at the directories in the VPATH variable 1230 * and add them to the search path, if the variable is defined. The 1231 * variable's value is in the same format as the PATH environment 1232 * variable, i.e. <directory>:<directory>:<directory>... 1233 */ 1234 static void 1235 InitVpath(void) 1236 { 1237 char *vpath, savec, *path; 1238 if (!Var_Exists("VPATH", VAR_CMDLINE)) 1239 return; 1240 1241 (void)Var_Subst("${VPATH}", VAR_CMDLINE, VARE_WANTRES, &vpath); 1242 /* TODO: handle errors */ 1243 path = vpath; 1244 do { 1245 char *cp; 1246 /* skip to end of directory */ 1247 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1248 continue; 1249 /* Save terminator character so know when to stop */ 1250 savec = *cp; 1251 *cp = '\0'; 1252 /* Add directory to search path */ 1253 (void)Dir_AddDir(dirSearchPath, path); 1254 *cp = savec; 1255 path = cp + 1; 1256 } while (savec == ':'); 1257 free(vpath); 1258 } 1259 1260 static void 1261 ReadMakefiles(void) 1262 { 1263 if (opts.makefiles->first != NULL) { 1264 StringListNode *ln; 1265 1266 for (ln = opts.makefiles->first; ln != NULL; ln = ln->next) { 1267 if (ReadMakefile(ln->datum) != 0) 1268 Fatal("%s: cannot open %s.", 1269 progname, (char *)ln->datum); 1270 } 1271 } else { 1272 char *p1; 1273 (void)Var_Subst("${" MAKE_MAKEFILE_PREFERENCE "}", 1274 VAR_CMDLINE, VARE_WANTRES, &p1); 1275 /* TODO: handle errors */ 1276 (void)str2Lst_Append(opts.makefiles, p1, NULL); 1277 (void)Lst_ForEachUntil(opts.makefiles, 1278 ReadMakefileSucceeded, NULL); 1279 free(p1); 1280 } 1281 } 1282 1283 static void 1284 CleanUp(void) 1285 { 1286 #ifdef CLEANUP 1287 Lst_Destroy(opts.variables, free); 1288 Lst_Free(opts.makefiles); /* don't free, may be used in GNodes */ 1289 Lst_Destroy(opts.create, free); 1290 #endif 1291 1292 /* print the graph now it's been processed if the user requested it */ 1293 if (DEBUG(GRAPH2)) 1294 Targ_PrintGraph(2); 1295 1296 Trace_Log(MAKEEND, 0); 1297 1298 if (enterFlagObj) 1299 printf("%s: Leaving directory `%s'\n", progname, objdir); 1300 if (opts.enterFlag) 1301 printf("%s: Leaving directory `%s'\n", progname, curdir); 1302 1303 #ifdef USE_META 1304 meta_finish(); 1305 #endif 1306 Suff_End(); 1307 Targ_End(); 1308 Arch_End(); 1309 Var_End(); 1310 Parse_End(); 1311 Dir_End(); 1312 Job_End(); 1313 Trace_End(); 1314 } 1315 1316 /*- 1317 * main -- 1318 * The main function, for obvious reasons. Initializes variables 1319 * and a few modules, then parses the arguments give it in the 1320 * environment and on the command line. Reads the system makefile 1321 * followed by either Makefile, makefile or the file given by the 1322 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 1323 * flags it has received by then uses either the Make or the Compat 1324 * module to create the initial list of targets. 1325 * 1326 * Results: 1327 * If -q was given, exits -1 if anything was out-of-date. Else it exits 1328 * 0. 1329 * 1330 * Side Effects: 1331 * The program exits when done. Targets are created. etc. etc. etc. 1332 */ 1333 int 1334 main(int argc, char **argv) 1335 { 1336 Boolean outOfDate; /* FALSE if all targets up to date */ 1337 struct stat sa; 1338 const char *machine; 1339 const char *machine_arch; 1340 char *syspath = getenv("MAKESYSPATH"); 1341 struct utsname utsname; 1342 1343 /* default to writing debug to stderr */ 1344 opts.debug_file = stderr; 1345 1346 #ifdef SIGINFO 1347 (void)bmake_signal(SIGINFO, siginfo); 1348 #endif 1349 1350 InitRandom(); 1351 1352 if ((progname = strrchr(argv[0], '/')) != NULL) 1353 progname++; 1354 else 1355 progname = argv[0]; 1356 1357 UnlimitFiles(); 1358 1359 if (uname(&utsname) == -1) { 1360 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1361 strerror(errno)); 1362 exit(2); 1363 } 1364 1365 /* 1366 * Get the name of this type of MACHINE from utsname 1367 * so we can share an executable for similar machines. 1368 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1369 * 1370 * Note that both MACHINE and MACHINE_ARCH are decided at 1371 * run-time. 1372 */ 1373 machine = init_machine(&utsname); 1374 machine_arch = init_machine_arch(); 1375 1376 myPid = getpid(); /* remember this for vFork() */ 1377 1378 /* 1379 * Just in case MAKEOBJDIR wants us to do something tricky. 1380 */ 1381 Var_Init(); /* Initialize the lists of variables for 1382 * parsing arguments */ 1383 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1384 Var_Set("MACHINE", machine, VAR_GLOBAL); 1385 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1386 #ifdef MAKE_VERSION 1387 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1388 #endif 1389 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1390 /* 1391 * This is the traditional preference for makefiles. 1392 */ 1393 #ifndef MAKEFILE_PREFERENCE_LIST 1394 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1395 #endif 1396 Var_Set(MAKE_MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1397 VAR_GLOBAL); 1398 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1399 1400 CmdOpts_Init(); 1401 allPrecious = FALSE; /* Remove targets when interrupted */ 1402 deleteOnError = FALSE; /* Historical default behavior */ 1403 jobsRunning = FALSE; 1404 1405 maxJobTokens = opts.maxJobs; 1406 ignorePWD = FALSE; 1407 1408 /* 1409 * Initialize the parsing, directory and variable modules to prepare 1410 * for the reading of inclusion paths and variable settings on the 1411 * command line 1412 */ 1413 1414 /* 1415 * Initialize various variables. 1416 * MAKE also gets this name, for compatibility 1417 * .MAKEFLAGS gets set to the empty string just in case. 1418 * MFLAGS also gets initialized empty, for compatibility. 1419 */ 1420 Parse_Init(); 1421 InitVarMake(argv[0]); 1422 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1423 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1424 Var_Set("MFLAGS", "", VAR_GLOBAL); 1425 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1426 /* some makefiles need to know this */ 1427 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMDLINE); 1428 1429 /* 1430 * Set some other useful macros 1431 */ 1432 { 1433 char tmp[64], *ep; 1434 1435 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1436 if (makelevel < 0) 1437 makelevel = 0; 1438 snprintf(tmp, sizeof tmp, "%d", makelevel); 1439 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1440 snprintf(tmp, sizeof tmp, "%u", myPid); 1441 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1442 snprintf(tmp, sizeof tmp, "%u", getppid()); 1443 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1444 } 1445 if (makelevel > 0) { 1446 char pn[1024]; 1447 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1448 progname = bmake_strdup(pn); 1449 } 1450 1451 #ifdef USE_META 1452 meta_init(); 1453 #endif 1454 Dir_Init(); 1455 1456 /* 1457 * First snag any flags out of the MAKE environment variable. 1458 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1459 * in a different format). 1460 */ 1461 #ifdef POSIX 1462 { 1463 char *p1 = explode(getenv("MAKEFLAGS")); 1464 Main_ParseArgLine(p1); 1465 free(p1); 1466 } 1467 #else 1468 Main_ParseArgLine(getenv("MAKE")); 1469 #endif 1470 1471 /* 1472 * Find where we are (now). 1473 * We take care of PWD for the automounter below... 1474 */ 1475 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1476 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1477 progname, strerror(errno)); 1478 exit(2); 1479 } 1480 1481 MainParseArgs(argc, argv); 1482 1483 if (opts.enterFlag) 1484 printf("%s: Entering directory `%s'\n", progname, curdir); 1485 1486 /* 1487 * Verify that cwd is sane. 1488 */ 1489 if (stat(curdir, &sa) == -1) { 1490 (void)fprintf(stderr, "%s: %s: %s.\n", 1491 progname, curdir, strerror(errno)); 1492 exit(2); 1493 } 1494 1495 #ifndef NO_PWD_OVERRIDE 1496 HandlePWD(&sa); 1497 #endif 1498 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1499 1500 InitObjdir(machine, machine_arch); 1501 1502 /* 1503 * Initialize archive, target and suffix modules in preparation for 1504 * parsing the makefile(s) 1505 */ 1506 Arch_Init(); 1507 Targ_Init(); 1508 Suff_Init(); 1509 Trace_Init(tracefile); 1510 1511 DEFAULT = NULL; 1512 (void)time(&now); 1513 1514 Trace_Log(MAKESTART, NULL); 1515 1516 InitVarTargets(); 1517 1518 InitDefSysIncPath(syspath); 1519 1520 /* 1521 * Read in the built-in rules first, followed by the specified 1522 * makefiles, or the default makefile and Makefile, in that order, 1523 * if no makefiles were given on the command line. 1524 */ 1525 if (!opts.noBuiltins) 1526 ReadBuiltinRules(); 1527 ReadMakefiles(); 1528 1529 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1530 if (!opts.noBuiltins || !opts.printVars) { 1531 /* ignore /dev/null and anything starting with "no" */ 1532 (void)Var_Subst("${.MAKE.DEPENDFILE:N/dev/null:Nno*:T}", 1533 VAR_CMDLINE, VARE_WANTRES, &makeDependfile); 1534 if (makeDependfile[0] != '\0') { 1535 /* TODO: handle errors */ 1536 doing_depend = TRUE; 1537 (void)ReadMakefile(makeDependfile); 1538 doing_depend = FALSE; 1539 } 1540 } 1541 1542 if (enterFlagObj) 1543 printf("%s: Entering directory `%s'\n", progname, objdir); 1544 1545 MakeMode(NULL); 1546 1547 { 1548 void *freeIt; 1549 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &freeIt), 1550 VAR_GLOBAL); 1551 bmake_free(freeIt); 1552 1553 } 1554 1555 InitMaxJobs(); 1556 1557 /* 1558 * Be compatible if user did not specify -j and did not explicitly 1559 * turned compatibility on 1560 */ 1561 if (!opts.compatMake && !forceJobs) { 1562 opts.compatMake = TRUE; 1563 } 1564 1565 if (!opts.compatMake) 1566 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1567 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1568 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1569 1570 if (!opts.printVars) 1571 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1572 1573 InitVpath(); 1574 1575 /* 1576 * Now that all search paths have been read for suffixes et al, it's 1577 * time to add the default search path to their lists... 1578 */ 1579 Suff_DoPaths(); 1580 1581 /* 1582 * Propagate attributes through :: dependency lists. 1583 */ 1584 Targ_Propagate(); 1585 1586 /* print the initial graph, if the user requested it */ 1587 if (DEBUG(GRAPH1)) 1588 Targ_PrintGraph(1); 1589 1590 /* print the values of any variables requested by the user */ 1591 if (opts.printVars) { 1592 doPrintVars(); 1593 outOfDate = FALSE; 1594 } else { 1595 outOfDate = runTargets(); 1596 } 1597 1598 CleanUp(); 1599 1600 if (DEBUG(LINT) && (errors > 0 || Parse_GetFatals() > 0)) 1601 return 2; /* Not 1 so -q can distinguish error */ 1602 return outOfDate ? 1 : 0; 1603 } 1604 1605 /* Open and parse the given makefile, with all its side effects. 1606 * 1607 * Results: 1608 * 0 if ok. -1 if couldn't open file. 1609 */ 1610 static int 1611 ReadMakefile(const char *fname) 1612 { 1613 int fd; 1614 char *name, *path = NULL; 1615 1616 if (!strcmp(fname, "-")) { 1617 Parse_File(NULL /*stdin*/, -1); 1618 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1619 } else { 1620 /* if we've chdir'd, rebuild the path name */ 1621 if (strcmp(curdir, objdir) && *fname != '/') { 1622 path = str_concat3(curdir, "/", fname); 1623 fd = open(path, O_RDONLY); 1624 if (fd != -1) { 1625 fname = path; 1626 goto found; 1627 } 1628 free(path); 1629 1630 /* If curdir failed, try objdir (ala .depend) */ 1631 path = str_concat3(objdir, "/", fname); 1632 fd = open(path, O_RDONLY); 1633 if (fd != -1) { 1634 fname = path; 1635 goto found; 1636 } 1637 } else { 1638 fd = open(fname, O_RDONLY); 1639 if (fd != -1) 1640 goto found; 1641 } 1642 /* look in -I and system include directories. */ 1643 name = Dir_FindFile(fname, parseIncPath); 1644 if (!name) { 1645 SearchPath *sysInc = Lst_IsEmpty(sysIncPath) 1646 ? defSysIncPath : sysIncPath; 1647 name = Dir_FindFile(fname, sysInc); 1648 } 1649 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1650 free(name); 1651 free(path); 1652 return -1; 1653 } 1654 fname = name; 1655 /* 1656 * set the MAKEFILE variable desired by System V fans -- the 1657 * placement of the setting here means it gets set to the last 1658 * makefile specified, as it is set by SysV make. 1659 */ 1660 found: 1661 if (!doing_depend) 1662 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1663 Parse_File(fname, fd); 1664 } 1665 free(path); 1666 return 0; 1667 } 1668 1669 1670 1671 /*- 1672 * Cmd_Exec -- 1673 * Execute the command in cmd, and return the output of that command 1674 * in a string. In the output, newlines are replaced with spaces. 1675 * 1676 * Results: 1677 * A string containing the output of the command, or the empty string. 1678 * *errfmt returns a format string describing the command failure, 1679 * if any, using a single %s conversion specification. 1680 * 1681 * Side Effects: 1682 * The string must be freed by the caller. 1683 */ 1684 char * 1685 Cmd_Exec(const char *cmd, const char **errfmt) 1686 { 1687 const char *args[4]; /* Args for invoking the shell */ 1688 int fds[2]; /* Pipe streams */ 1689 int cpid; /* Child PID */ 1690 int pid; /* PID from wait() */ 1691 int status; /* command exit status */ 1692 Buffer buf; /* buffer to store the result */ 1693 ssize_t bytes_read; 1694 char *res; /* result */ 1695 size_t res_len; 1696 char *cp; 1697 int savederr; /* saved errno */ 1698 1699 *errfmt = NULL; 1700 1701 if (!shellName) 1702 Shell_Init(); 1703 /* 1704 * Set up arguments for shell 1705 */ 1706 args[0] = shellName; 1707 args[1] = "-c"; 1708 args[2] = cmd; 1709 args[3] = NULL; 1710 1711 /* 1712 * Open a pipe for fetching its output 1713 */ 1714 if (pipe(fds) == -1) { 1715 *errfmt = "Couldn't create pipe for \"%s\""; 1716 goto bad; 1717 } 1718 1719 /* 1720 * Fork 1721 */ 1722 switch (cpid = vFork()) { 1723 case 0: 1724 /* 1725 * Close input side of pipe 1726 */ 1727 (void)close(fds[0]); 1728 1729 /* 1730 * Duplicate the output stream to the shell's output, then 1731 * shut the extra thing down. Note we don't fetch the error 1732 * stream...why not? Why? 1733 */ 1734 (void)dup2(fds[1], 1); 1735 (void)close(fds[1]); 1736 1737 Var_ExportVars(); 1738 1739 (void)execv(shellPath, UNCONST(args)); 1740 _exit(1); 1741 /*NOTREACHED*/ 1742 1743 case -1: 1744 *errfmt = "Couldn't exec \"%s\""; 1745 goto bad; 1746 1747 default: 1748 /* 1749 * No need for the writing half 1750 */ 1751 (void)close(fds[1]); 1752 1753 savederr = 0; 1754 Buf_Init(&buf, 0); 1755 1756 do { 1757 char result[BUFSIZ]; 1758 bytes_read = read(fds[0], result, sizeof result); 1759 if (bytes_read > 0) 1760 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1761 } 1762 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1763 if (bytes_read == -1) 1764 savederr = errno; 1765 1766 /* 1767 * Close the input side of the pipe. 1768 */ 1769 (void)close(fds[0]); 1770 1771 /* 1772 * Wait for the process to exit. 1773 */ 1774 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1775 JobReapChild(pid, status, FALSE); 1776 continue; 1777 } 1778 res_len = Buf_Len(&buf); 1779 res = Buf_Destroy(&buf, FALSE); 1780 1781 if (savederr != 0) 1782 *errfmt = "Couldn't read shell's output for \"%s\""; 1783 1784 if (WIFSIGNALED(status)) 1785 *errfmt = "\"%s\" exited on a signal"; 1786 else if (WEXITSTATUS(status) != 0) 1787 *errfmt = "\"%s\" returned non-zero status"; 1788 1789 /* Convert newlines to spaces. A final newline is just stripped */ 1790 if (res_len > 0 && res[res_len - 1] == '\n') 1791 res[res_len - 1] = '\0'; 1792 for (cp = res; *cp != '\0'; cp++) 1793 if (*cp == '\n') 1794 *cp = ' '; 1795 break; 1796 } 1797 return res; 1798 bad: 1799 return bmake_strdup(""); 1800 } 1801 1802 /* Print a printf-style error message. 1803 * 1804 * This error message has no consequences, in particular it does not affect 1805 * the exit status. */ 1806 void 1807 Error(const char *fmt, ...) 1808 { 1809 va_list ap; 1810 FILE *err_file; 1811 1812 err_file = opts.debug_file; 1813 if (err_file == stdout) 1814 err_file = stderr; 1815 (void)fflush(stdout); 1816 for (;;) { 1817 va_start(ap, fmt); 1818 fprintf(err_file, "%s: ", progname); 1819 (void)vfprintf(err_file, fmt, ap); 1820 va_end(ap); 1821 (void)fprintf(err_file, "\n"); 1822 (void)fflush(err_file); 1823 if (err_file == stderr) 1824 break; 1825 err_file = stderr; 1826 } 1827 errors++; 1828 } 1829 1830 /* Produce a Fatal error message, then exit immediately. 1831 * 1832 * If jobs are running, wait for them to finish. */ 1833 void 1834 Fatal(const char *fmt, ...) 1835 { 1836 va_list ap; 1837 1838 va_start(ap, fmt); 1839 if (jobsRunning) 1840 Job_Wait(); 1841 1842 (void)fflush(stdout); 1843 (void)vfprintf(stderr, fmt, ap); 1844 va_end(ap); 1845 (void)fprintf(stderr, "\n"); 1846 (void)fflush(stderr); 1847 1848 PrintOnError(NULL, NULL); 1849 1850 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1851 Targ_PrintGraph(2); 1852 Trace_Log(MAKEERROR, 0); 1853 exit(2); /* Not 1 so -q can distinguish error */ 1854 } 1855 1856 /* Major exception once jobs are being created. 1857 * Kills all jobs, prints a message and exits. */ 1858 void 1859 Punt(const char *fmt, ...) 1860 { 1861 va_list ap; 1862 1863 va_start(ap, fmt); 1864 (void)fflush(stdout); 1865 (void)fprintf(stderr, "%s: ", progname); 1866 (void)vfprintf(stderr, fmt, ap); 1867 va_end(ap); 1868 (void)fprintf(stderr, "\n"); 1869 (void)fflush(stderr); 1870 1871 PrintOnError(NULL, NULL); 1872 1873 DieHorribly(); 1874 } 1875 1876 /* Exit without giving a message. */ 1877 void 1878 DieHorribly(void) 1879 { 1880 if (jobsRunning) 1881 Job_AbortAll(); 1882 if (DEBUG(GRAPH2)) 1883 Targ_PrintGraph(2); 1884 Trace_Log(MAKEERROR, 0); 1885 exit(2); /* Not 1, so -q can distinguish error */ 1886 } 1887 1888 /* Called when aborting due to errors in child shell to signal abnormal exit. 1889 * The program exits. 1890 * Errors is the number of errors encountered in Make_Make. */ 1891 void 1892 Finish(int errs) 1893 { 1894 if (dieQuietly(NULL, -1)) 1895 exit(2); 1896 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1897 } 1898 1899 /* 1900 * eunlink -- 1901 * Remove a file carefully, avoiding directories. 1902 */ 1903 int 1904 eunlink(const char *file) 1905 { 1906 struct stat st; 1907 1908 if (lstat(file, &st) == -1) 1909 return -1; 1910 1911 if (S_ISDIR(st.st_mode)) { 1912 errno = EISDIR; 1913 return -1; 1914 } 1915 return unlink(file); 1916 } 1917 1918 static void 1919 write_all(int fd, const void *data, size_t n) 1920 { 1921 const char *mem = data; 1922 1923 while (n > 0) { 1924 ssize_t written = write(fd, mem, n); 1925 if (written == -1 && errno == EAGAIN) 1926 continue; 1927 if (written == -1) 1928 break; 1929 mem += written; 1930 n -= (size_t)written; 1931 } 1932 } 1933 1934 /* 1935 * execDie -- 1936 * Print why exec failed, avoiding stdio. 1937 */ 1938 void MAKE_ATTR_DEAD 1939 execDie(const char *af, const char *av) 1940 { 1941 Buffer buf; 1942 1943 Buf_Init(&buf, 0); 1944 Buf_AddStr(&buf, progname); 1945 Buf_AddStr(&buf, ": "); 1946 Buf_AddStr(&buf, af); 1947 Buf_AddStr(&buf, "("); 1948 Buf_AddStr(&buf, av); 1949 Buf_AddStr(&buf, ") failed ("); 1950 Buf_AddStr(&buf, strerror(errno)); 1951 Buf_AddStr(&buf, ")\n"); 1952 1953 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 1954 1955 Buf_Destroy(&buf, TRUE); 1956 _exit(1); 1957 } 1958 1959 /* 1960 * usage -- 1961 * exit with usage message 1962 */ 1963 static void 1964 usage(void) 1965 { 1966 char *p; 1967 if ((p = strchr(progname, '[')) != NULL) 1968 *p = '\0'; 1969 1970 (void)fprintf(stderr, 1971 "usage: %s [-BeikNnqrstWwX] \n" 1972 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1973 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1974 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1975 progname); 1976 exit(2); 1977 } 1978 1979 /* 1980 * realpath(3) can get expensive, cache results... 1981 */ 1982 static GNode *cached_realpaths = NULL; 1983 1984 static GNode * 1985 get_cached_realpaths(void) 1986 { 1987 1988 if (!cached_realpaths) { 1989 cached_realpaths = Targ_NewGN("Realpath"); 1990 #ifndef DEBUG_REALPATH_CACHE 1991 cached_realpaths->flags = INTERNAL; 1992 #endif 1993 } 1994 1995 return cached_realpaths; 1996 } 1997 1998 /* purge any relative paths */ 1999 static void 2000 purge_cached_realpaths(void) 2001 { 2002 GNode *cache = get_cached_realpaths(); 2003 HashEntry *he, *nhe; 2004 HashIter hi; 2005 2006 HashIter_Init(&hi, &cache->context); 2007 he = HashIter_Next(&hi); 2008 while (he != NULL) { 2009 nhe = HashIter_Next(&hi); 2010 if (he->key[0] != '/') { 2011 if (DEBUG(DIR)) 2012 fprintf(stderr, "cached_realpath: purging %s\n", he->key); 2013 HashTable_DeleteEntry(&cache->context, he); 2014 } 2015 he = nhe; 2016 } 2017 } 2018 2019 char * 2020 cached_realpath(const char *pathname, char *resolved) 2021 { 2022 GNode *cache; 2023 const char *rp; 2024 void *freeIt; 2025 2026 if (!pathname || !pathname[0]) 2027 return NULL; 2028 2029 cache = get_cached_realpaths(); 2030 2031 if ((rp = Var_Value(pathname, cache, &freeIt)) != NULL) { 2032 /* a hit */ 2033 strncpy(resolved, rp, MAXPATHLEN); 2034 resolved[MAXPATHLEN - 1] = '\0'; 2035 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2036 Var_Set(pathname, rp, cache); 2037 } /* else should we negative-cache? */ 2038 2039 bmake_free(freeIt); 2040 return rp ? resolved : NULL; 2041 } 2042 2043 /* 2044 * Return true if we should die without noise. 2045 * For example our failing child was a sub-make 2046 * or failure happend elsewhere. 2047 */ 2048 int 2049 dieQuietly(GNode *gn, int bf) 2050 { 2051 static int quietly = -1; 2052 2053 if (quietly < 0) { 2054 if (DEBUG(JOB) || !getBoolean(".MAKE.DIE_QUIETLY", TRUE)) 2055 quietly = 0; 2056 else if (bf >= 0) 2057 quietly = bf; 2058 else 2059 quietly = gn != NULL ? ((gn->type & (OP_MAKE)) != 0) : 0; 2060 } 2061 return quietly; 2062 } 2063 2064 static void 2065 SetErrorVars(GNode *gn) 2066 { 2067 StringListNode *ln; 2068 2069 /* 2070 * We can print this even if there is no .ERROR target. 2071 */ 2072 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2073 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2074 2075 for (ln = gn->commands->first; ln != NULL; ln = ln->next) { 2076 const char *cmd = ln->datum; 2077 2078 if (cmd == NULL) 2079 break; 2080 Var_Append(".ERROR_CMD", cmd, VAR_GLOBAL); 2081 } 2082 } 2083 2084 void 2085 PrintOnError(GNode *gn, const char *s) 2086 { 2087 static GNode *en = NULL; 2088 const char *expr; 2089 char *cp; 2090 2091 if (DEBUG(HASH)) { 2092 Targ_Stats(); 2093 Var_Stats(); 2094 } 2095 2096 /* we generally want to keep quiet if a sub-make died */ 2097 if (dieQuietly(gn, -1)) 2098 return; 2099 2100 if (s) 2101 printf("%s", s); 2102 2103 printf("\n%s: stopped in %s\n", progname, curdir); 2104 2105 if (en) 2106 return; /* we've been here! */ 2107 if (gn) 2108 SetErrorVars(gn); 2109 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2110 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2111 /* TODO: handle errors */ 2112 printf("%s", cp); 2113 free(cp); 2114 fflush(stdout); 2115 2116 /* 2117 * Finally, see if there is a .ERROR target, and run it if so. 2118 */ 2119 en = Targ_FindNode(".ERROR"); 2120 if (en) { 2121 en->type |= OP_SPECIAL; 2122 Compat_Make(en, en); 2123 } 2124 } 2125 2126 void 2127 Main_ExportMAKEFLAGS(Boolean first) 2128 { 2129 static Boolean once = TRUE; 2130 const char *expr; 2131 char *s; 2132 2133 if (once != first) 2134 return; 2135 once = FALSE; 2136 2137 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2138 (void)Var_Subst(expr, VAR_CMDLINE, VARE_WANTRES, &s); 2139 /* TODO: handle errors */ 2140 if (s[0] != '\0') { 2141 #ifdef POSIX 2142 setenv("MAKEFLAGS", s, 1); 2143 #else 2144 setenv("MAKE", s, 1); 2145 #endif 2146 } 2147 } 2148 2149 char * 2150 getTmpdir(void) 2151 { 2152 static char *tmpdir = NULL; 2153 2154 if (!tmpdir) { 2155 struct stat st; 2156 2157 /* 2158 * Honor $TMPDIR but only if it is valid. 2159 * Ensure it ends with /. 2160 */ 2161 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2162 VARE_WANTRES, &tmpdir); 2163 /* TODO: handle errors */ 2164 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2165 free(tmpdir); 2166 tmpdir = bmake_strdup(_PATH_TMP); 2167 } 2168 } 2169 return tmpdir; 2170 } 2171 2172 /* 2173 * Create and open a temp file using "pattern". 2174 * If out_fname is provided, set it to a copy of the filename created. 2175 * Otherwise unlink the file once open. 2176 */ 2177 int 2178 mkTempFile(const char *pattern, char **out_fname) 2179 { 2180 static char *tmpdir = NULL; 2181 char tfile[MAXPATHLEN]; 2182 int fd; 2183 2184 if (pattern != NULL) 2185 pattern = TMPPAT; 2186 if (tmpdir == NULL) 2187 tmpdir = getTmpdir(); 2188 if (pattern[0] == '/') { 2189 snprintf(tfile, sizeof tfile, "%s", pattern); 2190 } else { 2191 snprintf(tfile, sizeof tfile, "%s%s", tmpdir, pattern); 2192 } 2193 if ((fd = mkstemp(tfile)) < 0) 2194 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2195 if (out_fname) { 2196 *out_fname = bmake_strdup(tfile); 2197 } else { 2198 unlink(tfile); /* we just want the descriptor */ 2199 } 2200 return fd; 2201 } 2202 2203 /* 2204 * Convert a string representation of a boolean. 2205 * Anything that looks like "No", "False", "Off", "0" etc, 2206 * is FALSE, otherwise TRUE. 2207 */ 2208 Boolean 2209 s2Boolean(const char *s, Boolean bf) 2210 { 2211 switch(s[0]) { 2212 case '\0': /* not set - the default wins */ 2213 break; 2214 case '0': 2215 case 'F': 2216 case 'f': 2217 case 'N': 2218 case 'n': 2219 return FALSE; 2220 case 'O': 2221 case 'o': 2222 return s[1] != 'F' && s[1] != 'f'; 2223 default: 2224 return TRUE; 2225 } 2226 return bf; 2227 } 2228 2229 /* 2230 * Return a Boolean based on a variable. 2231 * 2232 * If the knob is not set, return the fallback. 2233 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 2234 * is FALSE, otherwise TRUE. 2235 */ 2236 Boolean 2237 getBoolean(const char *varname, Boolean fallback) 2238 { 2239 char *expr = str_concat3("${", varname, ":U}"); 2240 char *value; 2241 Boolean res; 2242 2243 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 2244 /* TODO: handle errors */ 2245 res = s2Boolean(value, fallback); 2246 free(value); 2247 free(expr); 2248 return res; 2249 } 2250
Indexes created Mon Sep 22 13:09:51 GMT 2025