main.c revision 1.433
1 /* $NetBSD: main.c,v 1.433 2020/11/07 10:16:18 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 1.433 2020/11/07 10:16:18 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) != 0)) { 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("${", varname, "}"); 851 char *evalue; 852 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &evalue); 853 /* TODO: handle errors */ 854 free(expr); 855 printf("%s\n", evalue); 856 bmake_free(evalue); 857 858 } else { 859 void *freeIt; 860 const char *value = Var_Value(varname, VAR_GLOBAL, &freeIt); 861 printf("%s\n", value ? value : ""); 862 bmake_free(freeIt); 863 } 864 } 865 866 /* 867 * Return a Boolean based on a variable. 868 * 869 * If the knob is not set, return the fallback. 870 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 871 * is FALSE, otherwise TRUE. 872 */ 873 static Boolean 874 GetBooleanVar(const char *varname, Boolean fallback) 875 { 876 char *expr = str_concat3("${", varname, ":U}"); 877 char *value; 878 Boolean res; 879 880 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 881 /* TODO: handle errors */ 882 res = ParseBoolean(value, fallback); 883 free(value); 884 free(expr); 885 return res; 886 } 887 888 static void 889 doPrintVars(void) 890 { 891 StringListNode *ln; 892 Boolean expandVars; 893 894 if (opts.printVars == EXPAND_VARS) 895 expandVars = TRUE; 896 else if (opts.debugVflag) 897 expandVars = FALSE; 898 else 899 expandVars = GetBooleanVar(".MAKE.EXPAND_VARIABLES", FALSE); 900 901 for (ln = opts.variables->first; ln != NULL; ln = ln->next) { 902 const char *varname = ln->datum; 903 PrintVar(varname, expandVars); 904 } 905 } 906 907 static Boolean 908 runTargets(void) 909 { 910 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 911 Boolean outOfDate; /* FALSE if all targets up to date */ 912 913 /* 914 * Have now read the entire graph and need to make a list of 915 * targets to create. If none was given on the command line, 916 * we consult the parsing module to find the main target(s) 917 * to create. 918 */ 919 if (Lst_IsEmpty(opts.create)) 920 targs = Parse_MainName(); 921 else 922 targs = Targ_FindList(opts.create); 923 924 if (!opts.compatMake) { 925 /* 926 * Initialize job module before traversing the graph 927 * now that any .BEGIN and .END targets have been read. 928 * This is done only if the -q flag wasn't given 929 * (to prevent the .BEGIN from being executed should 930 * it exist). 931 */ 932 if (!opts.queryFlag) { 933 Job_Init(); 934 jobsRunning = TRUE; 935 } 936 937 /* Traverse the graph, checking on all the targets */ 938 outOfDate = Make_Run(targs); 939 } else { 940 /* 941 * Compat_Init will take care of creating all the 942 * targets as well as initializing the module. 943 */ 944 Compat_Run(targs); 945 outOfDate = FALSE; 946 } 947 Lst_Free(targs); 948 return outOfDate; 949 } 950 951 /* 952 * Set up the .TARGETS variable to contain the list of targets to be 953 * created. If none specified, make the variable empty -- the parser 954 * will fill the thing in with the default or .MAIN target. 955 */ 956 static void 957 InitVarTargets(void) 958 { 959 StringListNode *ln; 960 961 if (Lst_IsEmpty(opts.create)) { 962 Var_Set(".TARGETS", "", VAR_GLOBAL); 963 return; 964 } 965 966 for (ln = opts.create->first; ln != NULL; ln = ln->next) { 967 char *name = ln->datum; 968 Var_Append(".TARGETS", name, VAR_GLOBAL); 969 } 970 } 971 972 static void 973 InitRandom(void) 974 { 975 struct timeval tv; 976 977 gettimeofday(&tv, NULL); 978 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 979 } 980 981 static const char * 982 init_machine(const struct utsname *utsname) 983 { 984 const char *machine = getenv("MACHINE"); 985 if (machine != NULL) 986 return machine; 987 988 #ifdef MAKE_NATIVE 989 return utsname->machine; 990 #else 991 #ifdef MAKE_MACHINE 992 return MAKE_MACHINE; 993 #else 994 return "unknown"; 995 #endif 996 #endif 997 } 998 999 static const char * 1000 init_machine_arch(void) 1001 { 1002 const char *env = getenv("MACHINE_ARCH"); 1003 if (env != NULL) 1004 return env; 1005 1006 #ifdef MAKE_NATIVE 1007 { 1008 struct utsname utsname; 1009 static char machine_arch_buf[sizeof utsname.machine]; 1010 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1011 size_t len = sizeof machine_arch_buf; 1012 1013 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1014 &len, NULL, 0) < 0) { 1015 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1016 strerror(errno)); 1017 exit(2); 1018 } 1019 1020 return machine_arch_buf; 1021 } 1022 #else 1023 #ifndef MACHINE_ARCH 1024 #ifdef MAKE_MACHINE_ARCH 1025 return MAKE_MACHINE_ARCH; 1026 #else 1027 return "unknown"; 1028 #endif 1029 #else 1030 return MACHINE_ARCH; 1031 #endif 1032 #endif 1033 } 1034 1035 #ifndef NO_PWD_OVERRIDE 1036 /* 1037 * All this code is so that we know where we are when we start up 1038 * on a different machine with pmake. 1039 * 1040 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1041 * since the value of curdir can vary depending on how we got 1042 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1043 * or via subdir.mk in which case its likely a shell which does 1044 * not provide it. 1045 * 1046 * So, to stop it breaking this case only, we ignore PWD if 1047 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1048 */ 1049 static void 1050 HandlePWD(const struct stat *curdir_st) 1051 { 1052 char *pwd; 1053 void *prefix_freeIt, *makeobjdir_freeIt; 1054 const char *makeobjdir; 1055 struct stat pwd_st; 1056 1057 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1058 return; 1059 1060 if (Var_Value("MAKEOBJDIRPREFIX", VAR_CMDLINE, &prefix_freeIt) != NULL) { 1061 bmake_free(prefix_freeIt); 1062 return; 1063 } 1064 1065 makeobjdir = Var_Value("MAKEOBJDIR", VAR_CMDLINE, &makeobjdir_freeIt); 1066 if (makeobjdir != NULL && strchr(makeobjdir, '$') != NULL) 1067 goto ignore_pwd; 1068 1069 if (stat(pwd, &pwd_st) == 0 && 1070 curdir_st->st_ino == pwd_st.st_ino && 1071 curdir_st->st_dev == pwd_st.st_dev) 1072 (void)strncpy(curdir, pwd, MAXPATHLEN); 1073 1074 ignore_pwd: 1075 bmake_free(makeobjdir_freeIt); 1076 } 1077 #endif 1078 1079 /* 1080 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1081 * MAKEOBJDIR is set in the environment, try only that value 1082 * and fall back to .CURDIR if it does not exist. 1083 * 1084 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1085 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1086 * of these paths exist, just use .CURDIR. 1087 */ 1088 static void 1089 InitObjdir(const char *machine, const char *machine_arch) 1090 { 1091 Dir_InitDir(curdir); 1092 (void)Main_SetObjdir("%s", curdir); 1093 1094 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1095 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1096 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1097 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1098 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1099 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1100 } 1101 1102 /* get rid of resource limit on file descriptors */ 1103 static void 1104 UnlimitFiles(void) 1105 { 1106 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1107 struct rlimit rl; 1108 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1109 rl.rlim_cur != rl.rlim_max) { 1110 rl.rlim_cur = rl.rlim_max; 1111 (void)setrlimit(RLIMIT_NOFILE, &rl); 1112 } 1113 #endif 1114 } 1115 1116 static void 1117 CmdOpts_Init(void) 1118 { 1119 opts.compatMake = FALSE; /* No compat mode */ 1120 opts.debug = 0; /* No debug verbosity, please. */ 1121 /* opts.debug_file has been initialized earlier */ 1122 opts.debugVflag = FALSE; 1123 opts.checkEnvFirst = FALSE; 1124 opts.makefiles = Lst_New(); 1125 opts.ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1126 opts.maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1127 opts.keepgoing = FALSE; /* Stop on error */ 1128 opts.noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1129 opts.noExecute = FALSE; /* Execute all commands */ 1130 opts.queryFlag = FALSE; /* This is not just a check-run */ 1131 opts.noBuiltins = FALSE; /* Read the built-in rules */ 1132 opts.beSilent = FALSE; /* Print commands as executed */ 1133 opts.touchFlag = FALSE; /* Actually update targets */ 1134 opts.printVars = 0; 1135 opts.variables = Lst_New(); 1136 opts.parseWarnFatal = FALSE; 1137 opts.enterFlag = FALSE; 1138 opts.varNoExportEnv = FALSE; 1139 opts.create = Lst_New(); 1140 } 1141 1142 /* Initialize MAKE and .MAKE to the path of the executable, so that it can be 1143 * found by execvp(3) and the shells, even after a chdir. 1144 * 1145 * If it's a relative path and contains a '/', resolve it to an absolute path. 1146 * Otherwise keep it as is, assuming it will be found in the PATH. */ 1147 static void 1148 InitVarMake(const char *argv0) 1149 { 1150 const char *make = argv0; 1151 1152 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1153 char pathbuf[MAXPATHLEN]; 1154 const char *abs = cached_realpath(argv0, pathbuf); 1155 struct stat st; 1156 if (abs != NULL && abs[0] == '/' && stat(make, &st) == 0) 1157 make = abs; 1158 } 1159 1160 Var_Set("MAKE", make, VAR_GLOBAL); 1161 Var_Set(".MAKE", make, VAR_GLOBAL); 1162 } 1163 1164 static void 1165 InitDefSysIncPath(char *syspath) 1166 { 1167 static char defsyspath[] = _PATH_DEFSYSPATH; 1168 char *start, *cp; 1169 1170 /* 1171 * If no user-supplied system path was given (through the -m option) 1172 * add the directories from the DEFSYSPATH (more than one may be given 1173 * as dir1:...:dirn) to the system include path. 1174 */ 1175 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1176 if (syspath == NULL || syspath[0] == '\0') 1177 syspath = defsyspath; 1178 else 1179 syspath = bmake_strdup(syspath); 1180 1181 for (start = syspath; *start != '\0'; start = cp) { 1182 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1183 continue; 1184 if (*cp == ':') 1185 *cp++ = '\0'; 1186 1187 /* look for magic parent directory search string */ 1188 if (strncmp(".../", start, 4) != 0) { 1189 (void)Dir_AddDir(defSysIncPath, start); 1190 } else { 1191 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1192 if (dir != NULL) { 1193 (void)Dir_AddDir(defSysIncPath, dir); 1194 free(dir); 1195 } 1196 } 1197 } 1198 1199 if (syspath != defsyspath) 1200 free(syspath); 1201 } 1202 1203 static void 1204 ReadBuiltinRules(void) 1205 { 1206 StringList *sysMkPath = Lst_New(); 1207 Dir_Expand(_PATH_DEFSYSMK, 1208 Lst_IsEmpty(sysIncPath) ? defSysIncPath : sysIncPath, 1209 sysMkPath); 1210 if (Lst_IsEmpty(sysMkPath)) 1211 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1212 if (!Lst_ForEachUntil(sysMkPath, ReadMakefileSucceeded, NULL)) 1213 Fatal("%s: cannot open %s.", progname, 1214 (char *)sysMkPath->first->datum); 1215 /* XXX: sysMkPath is not freed */ 1216 } 1217 1218 static void 1219 InitMaxJobs(void) 1220 { 1221 char *value; 1222 int n; 1223 1224 if (forceJobs || opts.compatMake || 1225 !Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) 1226 return; 1227 1228 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1229 /* TODO: handle errors */ 1230 n = (int)strtol(value, NULL, 0); 1231 if (n < 1) { 1232 (void)fprintf(stderr, 1233 "%s: illegal value for .MAKE.JOBS " 1234 "-- must be positive integer!\n", 1235 progname); 1236 exit(1); 1237 } 1238 1239 if (n != opts.maxJobs) { 1240 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1241 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1242 } 1243 1244 opts.maxJobs = n; 1245 maxJobTokens = opts.maxJobs; 1246 forceJobs = TRUE; 1247 free(value); 1248 } 1249 1250 /* 1251 * For compatibility, look at the directories in the VPATH variable 1252 * and add them to the search path, if the variable is defined. The 1253 * variable's value is in the same format as the PATH environment 1254 * variable, i.e. <directory>:<directory>:<directory>... 1255 */ 1256 static void 1257 InitVpath(void) 1258 { 1259 char *vpath, savec, *path; 1260 if (!Var_Exists("VPATH", VAR_CMDLINE)) 1261 return; 1262 1263 (void)Var_Subst("${VPATH}", VAR_CMDLINE, VARE_WANTRES, &vpath); 1264 /* TODO: handle errors */ 1265 path = vpath; 1266 do { 1267 char *cp; 1268 /* skip to end of directory */ 1269 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1270 continue; 1271 /* Save terminator character so know when to stop */ 1272 savec = *cp; 1273 *cp = '\0'; 1274 /* Add directory to search path */ 1275 (void)Dir_AddDir(dirSearchPath, path); 1276 *cp = savec; 1277 path = cp + 1; 1278 } while (savec == ':'); 1279 free(vpath); 1280 } 1281 1282 static void 1283 ReadMakefiles(void) 1284 { 1285 if (opts.makefiles->first != NULL) { 1286 StringListNode *ln; 1287 1288 for (ln = opts.makefiles->first; ln != NULL; ln = ln->next) { 1289 if (ReadMakefile(ln->datum) != 0) 1290 Fatal("%s: cannot open %s.", 1291 progname, (char *)ln->datum); 1292 } 1293 } else { 1294 char *p1; 1295 (void)Var_Subst("${" MAKE_MAKEFILE_PREFERENCE "}", 1296 VAR_CMDLINE, VARE_WANTRES, &p1); 1297 /* TODO: handle errors */ 1298 (void)str2Lst_Append(opts.makefiles, p1, NULL); 1299 (void)Lst_ForEachUntil(opts.makefiles, 1300 ReadMakefileSucceeded, NULL); 1301 free(p1); 1302 } 1303 } 1304 1305 static void 1306 CleanUp(void) 1307 { 1308 #ifdef CLEANUP 1309 Lst_Destroy(opts.variables, free); 1310 Lst_Free(opts.makefiles); /* don't free, may be used in GNodes */ 1311 Lst_Destroy(opts.create, free); 1312 #endif 1313 1314 /* print the graph now it's been processed if the user requested it */ 1315 if (DEBUG(GRAPH2)) 1316 Targ_PrintGraph(2); 1317 1318 Trace_Log(MAKEEND, NULL); 1319 1320 if (enterFlagObj) 1321 printf("%s: Leaving directory `%s'\n", progname, objdir); 1322 if (opts.enterFlag) 1323 printf("%s: Leaving directory `%s'\n", progname, curdir); 1324 1325 #ifdef USE_META 1326 meta_finish(); 1327 #endif 1328 Suff_End(); 1329 Targ_End(); 1330 Arch_End(); 1331 Var_End(); 1332 Parse_End(); 1333 Dir_End(); 1334 Job_End(); 1335 Trace_End(); 1336 } 1337 1338 /*- 1339 * main -- 1340 * The main function, for obvious reasons. Initializes variables 1341 * and a few modules, then parses the arguments give it in the 1342 * environment and on the command line. Reads the system makefile 1343 * followed by either Makefile, makefile or the file given by the 1344 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 1345 * flags it has received by then uses either the Make or the Compat 1346 * module to create the initial list of targets. 1347 * 1348 * Results: 1349 * If -q was given, exits -1 if anything was out-of-date. Else it exits 1350 * 0. 1351 * 1352 * Side Effects: 1353 * The program exits when done. Targets are created. etc. etc. etc. 1354 */ 1355 int 1356 main(int argc, char **argv) 1357 { 1358 Boolean outOfDate; /* FALSE if all targets up to date */ 1359 struct stat sa; 1360 const char *machine; 1361 const char *machine_arch; 1362 char *syspath = getenv("MAKESYSPATH"); 1363 struct utsname utsname; 1364 1365 /* default to writing debug to stderr */ 1366 opts.debug_file = stderr; 1367 1368 #ifdef SIGINFO 1369 (void)bmake_signal(SIGINFO, siginfo); 1370 #endif 1371 1372 InitRandom(); 1373 1374 if ((progname = strrchr(argv[0], '/')) != NULL) 1375 progname++; 1376 else 1377 progname = argv[0]; 1378 1379 UnlimitFiles(); 1380 1381 if (uname(&utsname) == -1) { 1382 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1383 strerror(errno)); 1384 exit(2); 1385 } 1386 1387 /* 1388 * Get the name of this type of MACHINE from utsname 1389 * so we can share an executable for similar machines. 1390 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1391 * 1392 * Note that both MACHINE and MACHINE_ARCH are decided at 1393 * run-time. 1394 */ 1395 machine = init_machine(&utsname); 1396 machine_arch = init_machine_arch(); 1397 1398 myPid = getpid(); /* remember this for vFork() */ 1399 1400 /* 1401 * Just in case MAKEOBJDIR wants us to do something tricky. 1402 */ 1403 Var_Init(); /* Initialize the lists of variables for 1404 * parsing arguments */ 1405 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1406 Var_Set("MACHINE", machine, VAR_GLOBAL); 1407 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1408 #ifdef MAKE_VERSION 1409 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1410 #endif 1411 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1412 /* 1413 * This is the traditional preference for makefiles. 1414 */ 1415 #ifndef MAKEFILE_PREFERENCE_LIST 1416 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1417 #endif 1418 Var_Set(MAKE_MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1419 VAR_GLOBAL); 1420 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1421 1422 CmdOpts_Init(); 1423 allPrecious = FALSE; /* Remove targets when interrupted */ 1424 deleteOnError = FALSE; /* Historical default behavior */ 1425 jobsRunning = FALSE; 1426 1427 maxJobTokens = opts.maxJobs; 1428 ignorePWD = FALSE; 1429 1430 /* 1431 * Initialize the parsing, directory and variable modules to prepare 1432 * for the reading of inclusion paths and variable settings on the 1433 * command line 1434 */ 1435 1436 /* 1437 * Initialize various variables. 1438 * MAKE also gets this name, for compatibility 1439 * .MAKEFLAGS gets set to the empty string just in case. 1440 * MFLAGS also gets initialized empty, for compatibility. 1441 */ 1442 Parse_Init(); 1443 InitVarMake(argv[0]); 1444 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1445 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1446 Var_Set("MFLAGS", "", VAR_GLOBAL); 1447 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1448 /* some makefiles need to know this */ 1449 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMDLINE); 1450 1451 /* 1452 * Set some other useful macros 1453 */ 1454 { 1455 char tmp[64], *ep = getenv(MAKE_LEVEL_ENV); 1456 1457 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1458 if (makelevel < 0) 1459 makelevel = 0; 1460 snprintf(tmp, sizeof tmp, "%d", makelevel); 1461 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1462 snprintf(tmp, sizeof tmp, "%u", myPid); 1463 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1464 snprintf(tmp, sizeof tmp, "%u", getppid()); 1465 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1466 } 1467 if (makelevel > 0) { 1468 char pn[1024]; 1469 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1470 progname = bmake_strdup(pn); 1471 } 1472 1473 #ifdef USE_META 1474 meta_init(); 1475 #endif 1476 Dir_Init(); 1477 1478 /* 1479 * First snag any flags out of the MAKE environment variable. 1480 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1481 * in a different format). 1482 */ 1483 #ifdef POSIX 1484 { 1485 char *p1 = explode(getenv("MAKEFLAGS")); 1486 Main_ParseArgLine(p1); 1487 free(p1); 1488 } 1489 #else 1490 Main_ParseArgLine(getenv("MAKE")); 1491 #endif 1492 1493 /* 1494 * Find where we are (now). 1495 * We take care of PWD for the automounter below... 1496 */ 1497 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1498 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1499 progname, strerror(errno)); 1500 exit(2); 1501 } 1502 1503 MainParseArgs(argc, argv); 1504 1505 if (opts.enterFlag) 1506 printf("%s: Entering directory `%s'\n", progname, curdir); 1507 1508 /* 1509 * Verify that cwd is sane. 1510 */ 1511 if (stat(curdir, &sa) == -1) { 1512 (void)fprintf(stderr, "%s: %s: %s.\n", 1513 progname, curdir, strerror(errno)); 1514 exit(2); 1515 } 1516 1517 #ifndef NO_PWD_OVERRIDE 1518 HandlePWD(&sa); 1519 #endif 1520 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1521 1522 InitObjdir(machine, machine_arch); 1523 1524 /* 1525 * Initialize archive, target and suffix modules in preparation for 1526 * parsing the makefile(s) 1527 */ 1528 Arch_Init(); 1529 Targ_Init(); 1530 Suff_Init(); 1531 Trace_Init(tracefile); 1532 1533 DEFAULT = NULL; 1534 (void)time(&now); 1535 1536 Trace_Log(MAKESTART, NULL); 1537 1538 InitVarTargets(); 1539 1540 InitDefSysIncPath(syspath); 1541 1542 /* 1543 * Read in the built-in rules first, followed by the specified 1544 * makefiles, or the default makefile and Makefile, in that order, 1545 * if no makefiles were given on the command line. 1546 */ 1547 if (!opts.noBuiltins) 1548 ReadBuiltinRules(); 1549 ReadMakefiles(); 1550 1551 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1552 if (!opts.noBuiltins || !opts.printVars) { 1553 /* ignore /dev/null and anything starting with "no" */ 1554 (void)Var_Subst("${.MAKE.DEPENDFILE:N/dev/null:Nno*:T}", 1555 VAR_CMDLINE, VARE_WANTRES, &makeDependfile); 1556 if (makeDependfile[0] != '\0') { 1557 /* TODO: handle errors */ 1558 doing_depend = TRUE; 1559 (void)ReadMakefile(makeDependfile); 1560 doing_depend = FALSE; 1561 } 1562 } 1563 1564 if (enterFlagObj) 1565 printf("%s: Entering directory `%s'\n", progname, objdir); 1566 1567 MakeMode(NULL); 1568 1569 { 1570 void *freeIt; 1571 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &freeIt), 1572 VAR_GLOBAL); 1573 bmake_free(freeIt); 1574 1575 } 1576 1577 InitMaxJobs(); 1578 1579 /* 1580 * Be compatible if user did not specify -j and did not explicitly 1581 * turned compatibility on 1582 */ 1583 if (!opts.compatMake && !forceJobs) { 1584 opts.compatMake = TRUE; 1585 } 1586 1587 if (!opts.compatMake) 1588 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1589 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1590 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1591 1592 if (!opts.printVars) 1593 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1594 1595 InitVpath(); 1596 1597 /* 1598 * Now that all search paths have been read for suffixes et al, it's 1599 * time to add the default search path to their lists... 1600 */ 1601 Suff_DoPaths(); 1602 1603 /* 1604 * Propagate attributes through :: dependency lists. 1605 */ 1606 Targ_Propagate(); 1607 1608 /* print the initial graph, if the user requested it */ 1609 if (DEBUG(GRAPH1)) 1610 Targ_PrintGraph(1); 1611 1612 /* print the values of any variables requested by the user */ 1613 if (opts.printVars) { 1614 doPrintVars(); 1615 outOfDate = FALSE; 1616 } else { 1617 outOfDate = runTargets(); 1618 } 1619 1620 CleanUp(); 1621 1622 if (DEBUG(LINT) && (errors > 0 || Parse_GetFatals() > 0)) 1623 return 2; /* Not 1 so -q can distinguish error */ 1624 return outOfDate ? 1 : 0; 1625 } 1626 1627 /* Open and parse the given makefile, with all its side effects. 1628 * 1629 * Results: 1630 * 0 if ok. -1 if couldn't open file. 1631 */ 1632 static int 1633 ReadMakefile(const char *fname) 1634 { 1635 int fd; 1636 char *name, *path = NULL; 1637 1638 if (!strcmp(fname, "-")) { 1639 Parse_File(NULL /*stdin*/, -1); 1640 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1641 } else { 1642 /* if we've chdir'd, rebuild the path name */ 1643 if (strcmp(curdir, objdir) && *fname != '/') { 1644 path = str_concat3(curdir, "/", fname); 1645 fd = open(path, O_RDONLY); 1646 if (fd != -1) { 1647 fname = path; 1648 goto found; 1649 } 1650 free(path); 1651 1652 /* If curdir failed, try objdir (ala .depend) */ 1653 path = str_concat3(objdir, "/", fname); 1654 fd = open(path, O_RDONLY); 1655 if (fd != -1) { 1656 fname = path; 1657 goto found; 1658 } 1659 } else { 1660 fd = open(fname, O_RDONLY); 1661 if (fd != -1) 1662 goto found; 1663 } 1664 /* look in -I and system include directories. */ 1665 name = Dir_FindFile(fname, parseIncPath); 1666 if (!name) { 1667 SearchPath *sysInc = Lst_IsEmpty(sysIncPath) 1668 ? defSysIncPath : sysIncPath; 1669 name = Dir_FindFile(fname, sysInc); 1670 } 1671 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1672 free(name); 1673 free(path); 1674 return -1; 1675 } 1676 fname = name; 1677 /* 1678 * set the MAKEFILE variable desired by System V fans -- the 1679 * placement of the setting here means it gets set to the last 1680 * makefile specified, as it is set by SysV make. 1681 */ 1682 found: 1683 if (!doing_depend) 1684 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1685 Parse_File(fname, fd); 1686 } 1687 free(path); 1688 return 0; 1689 } 1690 1691 1692 1693 /*- 1694 * Cmd_Exec -- 1695 * Execute the command in cmd, and return the output of that command 1696 * in a string. In the output, newlines are replaced with spaces. 1697 * 1698 * Results: 1699 * A string containing the output of the command, or the empty string. 1700 * *errfmt returns a format string describing the command failure, 1701 * if any, using a single %s conversion specification. 1702 * 1703 * Side Effects: 1704 * The string must be freed by the caller. 1705 */ 1706 char * 1707 Cmd_Exec(const char *cmd, const char **errfmt) 1708 { 1709 const char *args[4]; /* Args for invoking the shell */ 1710 int fds[2]; /* Pipe streams */ 1711 int cpid; /* Child PID */ 1712 int pid; /* PID from wait() */ 1713 int status; /* command exit status */ 1714 Buffer buf; /* buffer to store the result */ 1715 ssize_t bytes_read; 1716 char *res; /* result */ 1717 size_t res_len; 1718 char *cp; 1719 int savederr; /* saved errno */ 1720 1721 *errfmt = NULL; 1722 1723 if (!shellName) 1724 Shell_Init(); 1725 /* 1726 * Set up arguments for shell 1727 */ 1728 args[0] = shellName; 1729 args[1] = "-c"; 1730 args[2] = cmd; 1731 args[3] = NULL; 1732 1733 /* 1734 * Open a pipe for fetching its output 1735 */ 1736 if (pipe(fds) == -1) { 1737 *errfmt = "Couldn't create pipe for \"%s\""; 1738 goto bad; 1739 } 1740 1741 /* 1742 * Fork 1743 */ 1744 switch (cpid = vFork()) { 1745 case 0: 1746 (void)close(fds[0]); /* Close input side of pipe */ 1747 1748 /* 1749 * Duplicate the output stream to the shell's output, then 1750 * shut the extra thing down. Note we don't fetch the error 1751 * stream...why not? Why? 1752 */ 1753 (void)dup2(fds[1], 1); 1754 (void)close(fds[1]); 1755 1756 Var_ExportVars(); 1757 1758 (void)execv(shellPath, UNCONST(args)); 1759 _exit(1); 1760 /*NOTREACHED*/ 1761 1762 case -1: 1763 *errfmt = "Couldn't exec \"%s\""; 1764 goto bad; 1765 1766 default: 1767 (void)close(fds[1]); /* No need for the writing half */ 1768 1769 savederr = 0; 1770 Buf_Init(&buf, 0); 1771 1772 do { 1773 char result[BUFSIZ]; 1774 bytes_read = read(fds[0], result, sizeof result); 1775 if (bytes_read > 0) 1776 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1777 } while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1778 if (bytes_read == -1) 1779 savederr = errno; 1780 1781 (void)close(fds[0]); /* Close the input side of the pipe. */ 1782 1783 /* Wait for the process to exit. */ 1784 while((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1785 JobReapChild(pid, status, FALSE); 1786 1787 res_len = Buf_Len(&buf); 1788 res = Buf_Destroy(&buf, FALSE); 1789 1790 if (savederr != 0) 1791 *errfmt = "Couldn't read shell's output for \"%s\""; 1792 1793 if (WIFSIGNALED(status)) 1794 *errfmt = "\"%s\" exited on a signal"; 1795 else if (WEXITSTATUS(status) != 0) 1796 *errfmt = "\"%s\" returned non-zero status"; 1797 1798 /* Convert newlines to spaces. A final newline is just stripped */ 1799 if (res_len > 0 && res[res_len - 1] == '\n') 1800 res[res_len - 1] = '\0'; 1801 for (cp = res; *cp != '\0'; cp++) 1802 if (*cp == '\n') 1803 *cp = ' '; 1804 break; 1805 } 1806 return res; 1807 bad: 1808 return bmake_strdup(""); 1809 } 1810 1811 /* Print a printf-style error message. 1812 * 1813 * In default mode, this error message has no consequences, in particular it 1814 * does not affect the exit status. Only in lint mode (-dL) it does. */ 1815 void 1816 Error(const char *fmt, ...) 1817 { 1818 va_list ap; 1819 FILE *err_file; 1820 1821 err_file = opts.debug_file; 1822 if (err_file == stdout) 1823 err_file = stderr; 1824 (void)fflush(stdout); 1825 for (;;) { 1826 va_start(ap, fmt); 1827 fprintf(err_file, "%s: ", progname); 1828 (void)vfprintf(err_file, fmt, ap); 1829 va_end(ap); 1830 (void)fprintf(err_file, "\n"); 1831 (void)fflush(err_file); 1832 if (err_file == stderr) 1833 break; 1834 err_file = stderr; 1835 } 1836 errors++; 1837 } 1838 1839 /* Produce a Fatal error message, then exit immediately. 1840 * 1841 * If jobs are running, wait for them to finish. */ 1842 void 1843 Fatal(const char *fmt, ...) 1844 { 1845 va_list ap; 1846 1847 va_start(ap, fmt); 1848 if (jobsRunning) 1849 Job_Wait(); 1850 1851 (void)fflush(stdout); 1852 (void)vfprintf(stderr, fmt, ap); 1853 va_end(ap); 1854 (void)fprintf(stderr, "\n"); 1855 (void)fflush(stderr); 1856 1857 PrintOnError(NULL, NULL); 1858 1859 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1860 Targ_PrintGraph(2); 1861 Trace_Log(MAKEERROR, NULL); 1862 exit(2); /* Not 1 so -q can distinguish error */ 1863 } 1864 1865 /* Major exception once jobs are being created. 1866 * Kills all jobs, prints a message and exits. */ 1867 void 1868 Punt(const char *fmt, ...) 1869 { 1870 va_list ap; 1871 1872 va_start(ap, fmt); 1873 (void)fflush(stdout); 1874 (void)fprintf(stderr, "%s: ", progname); 1875 (void)vfprintf(stderr, fmt, ap); 1876 va_end(ap); 1877 (void)fprintf(stderr, "\n"); 1878 (void)fflush(stderr); 1879 1880 PrintOnError(NULL, NULL); 1881 1882 DieHorribly(); 1883 } 1884 1885 /* Exit without giving a message. */ 1886 void 1887 DieHorribly(void) 1888 { 1889 if (jobsRunning) 1890 Job_AbortAll(); 1891 if (DEBUG(GRAPH2)) 1892 Targ_PrintGraph(2); 1893 Trace_Log(MAKEERROR, NULL); 1894 exit(2); /* Not 1, so -q can distinguish error */ 1895 } 1896 1897 /* Called when aborting due to errors in child shell to signal abnormal exit. 1898 * The program exits. 1899 * Errors is the number of errors encountered in Make_Make. */ 1900 void 1901 Finish(int errs) 1902 { 1903 if (shouldDieQuietly(NULL, -1)) 1904 exit(2); 1905 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1906 } 1907 1908 /* 1909 * eunlink -- 1910 * Remove a file carefully, avoiding directories. 1911 */ 1912 int 1913 eunlink(const char *file) 1914 { 1915 struct stat st; 1916 1917 if (lstat(file, &st) == -1) 1918 return -1; 1919 1920 if (S_ISDIR(st.st_mode)) { 1921 errno = EISDIR; 1922 return -1; 1923 } 1924 return unlink(file); 1925 } 1926 1927 static void 1928 write_all(int fd, const void *data, size_t n) 1929 { 1930 const char *mem = data; 1931 1932 while (n > 0) { 1933 ssize_t written = write(fd, mem, n); 1934 if (written == -1 && errno == EAGAIN) 1935 continue; 1936 if (written == -1) 1937 break; 1938 mem += written; 1939 n -= (size_t)written; 1940 } 1941 } 1942 1943 /* 1944 * execDie -- 1945 * Print why exec failed, avoiding stdio. 1946 */ 1947 void MAKE_ATTR_DEAD 1948 execDie(const char *af, const char *av) 1949 { 1950 Buffer buf; 1951 1952 Buf_Init(&buf, 0); 1953 Buf_AddStr(&buf, progname); 1954 Buf_AddStr(&buf, ": "); 1955 Buf_AddStr(&buf, af); 1956 Buf_AddStr(&buf, "("); 1957 Buf_AddStr(&buf, av); 1958 Buf_AddStr(&buf, ") failed ("); 1959 Buf_AddStr(&buf, strerror(errno)); 1960 Buf_AddStr(&buf, ")\n"); 1961 1962 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 1963 1964 Buf_Destroy(&buf, TRUE); 1965 _exit(1); 1966 } 1967 1968 /* 1969 * usage -- 1970 * exit with usage message 1971 */ 1972 static void 1973 usage(void) 1974 { 1975 char *p; 1976 if ((p = strchr(progname, '[')) != NULL) 1977 *p = '\0'; 1978 1979 (void)fprintf(stderr, 1980 "usage: %s [-BeikNnqrstWwX] \n" 1981 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1982 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1983 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1984 progname); 1985 exit(2); 1986 } 1987 1988 /* 1989 * realpath(3) can get expensive, cache results... 1990 */ 1991 static GNode *cached_realpaths = NULL; 1992 1993 static GNode * 1994 get_cached_realpaths(void) 1995 { 1996 1997 if (!cached_realpaths) { 1998 cached_realpaths = Targ_NewGN("Realpath"); 1999 #ifndef DEBUG_REALPATH_CACHE 2000 cached_realpaths->flags = INTERNAL; 2001 #endif 2002 } 2003 2004 return cached_realpaths; 2005 } 2006 2007 /* purge any relative paths */ 2008 static void 2009 purge_cached_realpaths(void) 2010 { 2011 GNode *cache = get_cached_realpaths(); 2012 HashEntry *he, *nhe; 2013 HashIter hi; 2014 2015 HashIter_Init(&hi, &cache->context); 2016 he = HashIter_Next(&hi); 2017 while (he != NULL) { 2018 nhe = HashIter_Next(&hi); 2019 if (he->key[0] != '/') { 2020 if (DEBUG(DIR)) 2021 fprintf(stderr, "cached_realpath: purging %s\n", he->key); 2022 HashTable_DeleteEntry(&cache->context, he); 2023 } 2024 he = nhe; 2025 } 2026 } 2027 2028 char * 2029 cached_realpath(const char *pathname, char *resolved) 2030 { 2031 GNode *cache; 2032 const char *rp; 2033 void *freeIt; 2034 2035 if (pathname == NULL || pathname[0] == '\0') 2036 return NULL; 2037 2038 cache = get_cached_realpaths(); 2039 2040 if ((rp = Var_Value(pathname, cache, &freeIt)) != NULL) { 2041 /* a hit */ 2042 strncpy(resolved, rp, MAXPATHLEN); 2043 resolved[MAXPATHLEN - 1] = '\0'; 2044 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2045 Var_Set(pathname, rp, cache); 2046 } /* else should we negative-cache? */ 2047 2048 bmake_free(freeIt); 2049 return rp ? resolved : NULL; 2050 } 2051 2052 /* 2053 * Return true if we should die without noise. 2054 * For example our failing child was a sub-make or failure happened elsewhere. 2055 */ 2056 Boolean 2057 shouldDieQuietly(GNode *gn, int bf) 2058 { 2059 static int quietly = -1; 2060 2061 if (quietly < 0) { 2062 if (DEBUG(JOB) || !GetBooleanVar(".MAKE.DIE_QUIETLY", TRUE)) 2063 quietly = 0; 2064 else if (bf >= 0) 2065 quietly = bf; 2066 else 2067 quietly = gn != NULL && (gn->type & OP_MAKE); 2068 } 2069 return quietly; 2070 } 2071 2072 static void 2073 SetErrorVars(GNode *gn) 2074 { 2075 StringListNode *ln; 2076 2077 /* 2078 * We can print this even if there is no .ERROR target. 2079 */ 2080 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2081 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2082 2083 for (ln = gn->commands->first; ln != NULL; ln = ln->next) { 2084 const char *cmd = ln->datum; 2085 2086 if (cmd == NULL) 2087 break; 2088 Var_Append(".ERROR_CMD", cmd, VAR_GLOBAL); 2089 } 2090 } 2091 2092 void 2093 PrintOnError(GNode *gn, const char *s) 2094 { 2095 static GNode *en = NULL; 2096 const char *expr; 2097 char *cp; 2098 2099 if (DEBUG(HASH)) { 2100 Targ_Stats(); 2101 Var_Stats(); 2102 } 2103 2104 /* we generally want to keep quiet if a sub-make died */ 2105 if (shouldDieQuietly(gn, -1)) 2106 return; 2107 2108 if (s) 2109 printf("%s", s); 2110 2111 printf("\n%s: stopped in %s\n", progname, curdir); 2112 2113 if (en) 2114 return; /* we've been here! */ 2115 if (gn) 2116 SetErrorVars(gn); 2117 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2118 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2119 /* TODO: handle errors */ 2120 printf("%s", cp); 2121 free(cp); 2122 fflush(stdout); 2123 2124 /* 2125 * Finally, see if there is a .ERROR target, and run it if so. 2126 */ 2127 en = Targ_FindNode(".ERROR"); 2128 if (en) { 2129 en->type |= OP_SPECIAL; 2130 Compat_Make(en, en); 2131 } 2132 } 2133 2134 void 2135 Main_ExportMAKEFLAGS(Boolean first) 2136 { 2137 static Boolean once = TRUE; 2138 const char *expr; 2139 char *s; 2140 2141 if (once != first) 2142 return; 2143 once = FALSE; 2144 2145 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2146 (void)Var_Subst(expr, VAR_CMDLINE, VARE_WANTRES, &s); 2147 /* TODO: handle errors */ 2148 if (s[0] != '\0') { 2149 #ifdef POSIX 2150 setenv("MAKEFLAGS", s, 1); 2151 #else 2152 setenv("MAKE", s, 1); 2153 #endif 2154 } 2155 } 2156 2157 char * 2158 getTmpdir(void) 2159 { 2160 static char *tmpdir = NULL; 2161 2162 if (!tmpdir) { 2163 struct stat st; 2164 2165 /* 2166 * Honor $TMPDIR but only if it is valid. 2167 * Ensure it ends with /. 2168 */ 2169 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2170 VARE_WANTRES, &tmpdir); 2171 /* TODO: handle errors */ 2172 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2173 free(tmpdir); 2174 tmpdir = bmake_strdup(_PATH_TMP); 2175 } 2176 } 2177 return tmpdir; 2178 } 2179 2180 /* 2181 * Create and open a temp file using "pattern". 2182 * If out_fname is provided, set it to a copy of the filename created. 2183 * Otherwise unlink the file once open. 2184 */ 2185 int 2186 mkTempFile(const char *pattern, char **out_fname) 2187 { 2188 static char *tmpdir = NULL; 2189 char tfile[MAXPATHLEN]; 2190 int fd; 2191 2192 if (pattern == NULL) 2193 pattern = TMPPAT; 2194 if (tmpdir == NULL) 2195 tmpdir = getTmpdir(); 2196 if (pattern[0] == '/') { 2197 snprintf(tfile, sizeof tfile, "%s", pattern); 2198 } else { 2199 snprintf(tfile, sizeof tfile, "%s%s", tmpdir, pattern); 2200 } 2201 if ((fd = mkstemp(tfile)) < 0) 2202 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2203 if (out_fname) { 2204 *out_fname = bmake_strdup(tfile); 2205 } else { 2206 unlink(tfile); /* we just want the descriptor */ 2207 } 2208 return fd; 2209 } 2210 2211 /* 2212 * Convert a string representation of a boolean. 2213 * Anything that looks like "No", "False", "Off", "0" etc, 2214 * is FALSE, otherwise TRUE. 2215 */ 2216 Boolean 2217 ParseBoolean(const char *s, Boolean bf) 2218 { 2219 switch(s[0]) { 2220 case '\0': /* not set - the default wins */ 2221 break; 2222 case '0': 2223 case 'F': 2224 case 'f': 2225 case 'N': 2226 case 'n': 2227 return FALSE; 2228 case 'O': 2229 case 'o': 2230 return s[1] != 'F' && s[1] != 'f'; 2231 default: 2232 return TRUE; 2233 } 2234 return bf; 2235 } 2236
Indexes created Tue Sep 23 14:10:03 GMT 2025