main.c revision 1.505
1 /* $NetBSD: main.c,v 1.505 2020/12/27 11:47:04 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 /* The main file for this entire program. Exit routines etc. reside here. 72 * 73 * Utility functions defined in this file: 74 * 75 * Main_ParseArgLine Parse and process command line arguments from 76 * a single string. Used to implement the 77 * special targets .MFLAGS and .MAKEFLAGS. 78 * 79 * Error Print a tagged error message. 80 * 81 * Fatal Print an error message and exit. 82 * 83 * Punt Abort all jobs and exit with a message. 84 * 85 * Finish Finish things up by printing the number of 86 * errors which occurred, and exit. 87 */ 88 89 #include <sys/types.h> 90 #include <sys/time.h> 91 #include <sys/param.h> 92 #include <sys/resource.h> 93 #include <sys/stat.h> 94 #ifdef MAKE_NATIVE 95 #include <sys/sysctl.h> 96 #endif 97 #include <sys/utsname.h> 98 #include <sys/wait.h> 99 100 #include <errno.h> 101 #include <signal.h> 102 #include <stdarg.h> 103 #include <time.h> 104 105 #include "make.h" 106 #include "dir.h" 107 #include "job.h" 108 #include "pathnames.h" 109 #include "trace.h" 110 111 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 112 MAKE_RCSID("$NetBSD: main.c,v 1.505 2020/12/27 11:47:04 rillig Exp $"); 113 #if defined(MAKE_NATIVE) && !defined(lint) 114 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 " 115 "The Regents of the University of California. " 116 "All rights reserved."); 117 #endif 118 119 CmdOpts opts; 120 time_t now; /* Time at start of make */ 121 GNode *defaultNode; /* .DEFAULT node */ 122 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 123 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 124 125 static int maxJobTokens; /* -j argument */ 126 Boolean enterFlagObj; /* -w and objdir != srcdir */ 127 128 Boolean preserveUndefined; 129 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 130 Boolean doing_depend; /* Set while reading .depend */ 131 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 132 static const char *tracefile; 133 static int ReadMakefile(const char *); 134 static void purge_relative_cached_realpaths(void); 135 136 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 137 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 138 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 139 const char *progname; 140 char *makeDependfile; 141 pid_t myPid; 142 int makelevel; 143 144 Boolean forceJobs = FALSE; 145 static int main_errors = 0; 146 static HashTable cached_realpaths; 147 148 /* 149 * For compatibility with the POSIX version of MAKEFLAGS that includes 150 * all the options without '-', convert 'flags' to '-f -l -a -g -s'. 151 */ 152 static char * 153 explode(const char *flags) 154 { 155 size_t len; 156 char *nf, *st; 157 const char *f; 158 159 if (flags == NULL) 160 return NULL; 161 162 for (f = flags; *f; f++) 163 if (!ch_isalpha(*f)) 164 break; 165 166 if (*f != '\0') 167 return bmake_strdup(flags); 168 169 len = strlen(flags); 170 st = nf = bmake_malloc(len * 3 + 1); 171 while (*flags != '\0') { 172 *nf++ = '-'; 173 *nf++ = *flags++; 174 *nf++ = ' '; 175 } 176 *nf = '\0'; 177 return st; 178 } 179 180 /* 181 * usage -- 182 * exit with usage message 183 */ 184 MAKE_ATTR_DEAD static void 185 usage(void) 186 { 187 size_t prognameLen = strcspn(progname, "["); 188 189 (void)fprintf(stderr, 190 "usage: %.*s [-BeikNnqrSstWwX]\n" 191 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 192 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 193 " [-V variable] [-v variable] [variable=value] [target ...]\n", 194 (int)prognameLen, progname); 195 exit(2); 196 } 197 198 static void 199 parse_debug_option_F(const char *modules) 200 { 201 const char *mode; 202 size_t len; 203 char *fname; 204 205 if (opts.debug_file != stdout && opts.debug_file != stderr) 206 fclose(opts.debug_file); 207 208 if (*modules == '+') { 209 modules++; 210 mode = "a"; 211 } else 212 mode = "w"; 213 214 if (strcmp(modules, "stdout") == 0) { 215 opts.debug_file = stdout; 216 return; 217 } 218 if (strcmp(modules, "stderr") == 0) { 219 opts.debug_file = stderr; 220 return; 221 } 222 223 len = strlen(modules); 224 fname = bmake_malloc(len + 20); 225 memcpy(fname, modules, len + 1); 226 227 /* Let the filename be modified by the pid */ 228 if (strcmp(fname + len - 3, ".%d") == 0) 229 snprintf(fname + len - 2, 20, "%d", getpid()); 230 231 opts.debug_file = fopen(fname, mode); 232 if (opts.debug_file == NULL) { 233 fprintf(stderr, "Cannot open debug file %s\n", 234 fname); 235 usage(); 236 } 237 free(fname); 238 } 239 240 static void 241 parse_debug_options(const char *argvalue) 242 { 243 const char *modules; 244 DebugFlags debug = opts.debug; 245 246 for (modules = argvalue; *modules; ++modules) { 247 switch (*modules) { 248 case '0': /* undocumented, only intended for tests */ 249 debug = DEBUG_NONE; 250 break; 251 case 'A': 252 debug = DEBUG_ALL; 253 break; 254 case 'a': 255 debug |= DEBUG_ARCH; 256 break; 257 case 'C': 258 debug |= DEBUG_CWD; 259 break; 260 case 'c': 261 debug |= DEBUG_COND; 262 break; 263 case 'd': 264 debug |= DEBUG_DIR; 265 break; 266 case 'e': 267 debug |= DEBUG_ERROR; 268 break; 269 case 'f': 270 debug |= DEBUG_FOR; 271 break; 272 case 'g': 273 if (modules[1] == '1') { 274 debug |= DEBUG_GRAPH1; 275 modules++; 276 } else if (modules[1] == '2') { 277 debug |= DEBUG_GRAPH2; 278 modules++; 279 } else if (modules[1] == '3') { 280 debug |= DEBUG_GRAPH3; 281 modules++; 282 } 283 break; 284 case 'h': 285 debug |= DEBUG_HASH; 286 break; 287 case 'j': 288 debug |= DEBUG_JOB; 289 break; 290 case 'L': 291 opts.strict = TRUE; 292 break; 293 case 'l': 294 debug |= DEBUG_LOUD; 295 break; 296 case 'M': 297 debug |= DEBUG_META; 298 break; 299 case 'm': 300 debug |= DEBUG_MAKE; 301 break; 302 case 'n': 303 debug |= DEBUG_SCRIPT; 304 break; 305 case 'p': 306 debug |= DEBUG_PARSE; 307 break; 308 case 's': 309 debug |= DEBUG_SUFF; 310 break; 311 case 't': 312 debug |= DEBUG_TARG; 313 break; 314 case 'V': 315 opts.debugVflag = TRUE; 316 break; 317 case 'v': 318 debug |= DEBUG_VAR; 319 break; 320 case 'x': 321 debug |= DEBUG_SHELL; 322 break; 323 case 'F': 324 parse_debug_option_F(modules + 1); 325 goto debug_setbuf; 326 default: 327 (void)fprintf(stderr, 328 "%s: illegal argument to d option -- %c\n", 329 progname, *modules); 330 usage(); 331 } 332 } 333 334 debug_setbuf: 335 opts.debug = debug; 336 337 /* 338 * Make the debug_file unbuffered, and make 339 * stdout line buffered (unless debugfile == stdout). 340 */ 341 setvbuf(opts.debug_file, NULL, _IONBF, 0); 342 if (opts.debug_file != stdout) { 343 setvbuf(stdout, NULL, _IOLBF, 0); 344 } 345 } 346 347 /* 348 * does path contain any relative components 349 */ 350 static Boolean 351 is_relpath(const char *path) 352 { 353 const char *cp; 354 355 if (path[0] != '/') 356 return TRUE; 357 cp = path; 358 while ((cp = strstr(cp, "/.")) != NULL) { 359 cp += 2; 360 if (*cp == '.') 361 cp++; 362 if (cp[0] == '/' || cp[0] == '\0') 363 return TRUE; 364 } 365 return FALSE; 366 } 367 368 static void 369 MainParseArgChdir(const char *argvalue) 370 { 371 struct stat sa, sb; 372 373 if (chdir(argvalue) == -1) { 374 (void)fprintf(stderr, "%s: chdir %s: %s\n", 375 progname, argvalue, strerror(errno)); 376 exit(2); /* Not 1 so -q can distinguish error */ 377 } 378 if (getcwd(curdir, MAXPATHLEN) == NULL) { 379 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 380 exit(2); 381 } 382 if (!is_relpath(argvalue) && 383 stat(argvalue, &sa) != -1 && 384 stat(curdir, &sb) != -1 && 385 sa.st_ino == sb.st_ino && 386 sa.st_dev == sb.st_dev) 387 strncpy(curdir, argvalue, MAXPATHLEN); 388 ignorePWD = TRUE; 389 } 390 391 static void 392 MainParseArgJobsInternal(const char *argvalue) 393 { 394 char end; 395 if (sscanf(argvalue, "%d,%d%c", &jp_0, &jp_1, &end) != 2) { 396 (void)fprintf(stderr, 397 "%s: internal error -- J option malformed (%s)\n", 398 progname, argvalue); 399 usage(); 400 } 401 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 402 (fcntl(jp_1, F_GETFD, 0) < 0)) { 403 #if 0 404 (void)fprintf(stderr, 405 "%s: ###### warning -- J descriptors were closed!\n", 406 progname); 407 exit(2); 408 #endif 409 jp_0 = -1; 410 jp_1 = -1; 411 opts.compatMake = TRUE; 412 } else { 413 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 414 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 415 } 416 } 417 418 static void 419 MainParseArgJobs(const char *argvalue) 420 { 421 char *p; 422 423 forceJobs = TRUE; 424 opts.maxJobs = (int)strtol(argvalue, &p, 0); 425 if (*p != '\0' || opts.maxJobs < 1) { 426 (void)fprintf(stderr, 427 "%s: illegal argument to -j -- must be positive integer!\n", 428 progname); 429 exit(2); /* Not 1 so -q can distinguish error */ 430 } 431 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 432 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 433 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 434 maxJobTokens = opts.maxJobs; 435 } 436 437 static void 438 MainParseArgSysInc(const char *argvalue) 439 { 440 /* look for magic parent directory search string */ 441 if (strncmp(".../", argvalue, 4) == 0) { 442 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 443 if (found_path == NULL) 444 return; 445 (void)Dir_AddDir(sysIncPath, found_path); 446 free(found_path); 447 } else { 448 (void)Dir_AddDir(sysIncPath, argvalue); 449 } 450 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 451 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 452 } 453 454 static Boolean 455 MainParseArg(char c, const char *argvalue) 456 { 457 switch (c) { 458 case '\0': 459 break; 460 case 'B': 461 opts.compatMake = TRUE; 462 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 463 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 464 break; 465 case 'C': 466 MainParseArgChdir(argvalue); 467 break; 468 case 'D': 469 if (argvalue[0] == '\0') return FALSE; 470 Var_Set(argvalue, "1", VAR_GLOBAL); 471 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 472 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 473 break; 474 case 'I': 475 Parse_AddIncludeDir(argvalue); 476 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 477 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 478 break; 479 case 'J': 480 MainParseArgJobsInternal(argvalue); 481 break; 482 case 'N': 483 opts.noExecute = TRUE; 484 opts.noRecursiveExecute = TRUE; 485 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 486 break; 487 case 'S': 488 opts.keepgoing = FALSE; 489 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 490 break; 491 case 'T': 492 tracefile = bmake_strdup(argvalue); 493 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 494 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 495 break; 496 case 'V': 497 case 'v': 498 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED; 499 Lst_Append(&opts.variables, bmake_strdup(argvalue)); 500 /* XXX: Why always -V? */ 501 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 502 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 503 break; 504 case 'W': 505 opts.parseWarnFatal = TRUE; 506 /* XXX: why no Var_Append? */ 507 break; 508 case 'X': 509 opts.varNoExportEnv = TRUE; 510 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 511 break; 512 case 'd': 513 /* If '-d-opts' don't pass to children */ 514 if (argvalue[0] == '-') 515 argvalue++; 516 else { 517 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 518 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 519 } 520 parse_debug_options(argvalue); 521 break; 522 case 'e': 523 opts.checkEnvFirst = TRUE; 524 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 525 break; 526 case 'f': 527 Lst_Append(&opts.makefiles, bmake_strdup(argvalue)); 528 break; 529 case 'i': 530 opts.ignoreErrors = TRUE; 531 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 532 break; 533 case 'j': 534 MainParseArgJobs(argvalue); 535 break; 536 case 'k': 537 opts.keepgoing = TRUE; 538 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 539 break; 540 case 'm': 541 MainParseArgSysInc(argvalue); 542 /* XXX: why no Var_Append? */ 543 break; 544 case 'n': 545 opts.noExecute = TRUE; 546 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 547 break; 548 case 'q': 549 opts.queryFlag = TRUE; 550 /* Kind of nonsensical, wot? */ 551 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 552 break; 553 case 'r': 554 opts.noBuiltins = TRUE; 555 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 556 break; 557 case 's': 558 opts.beSilent = TRUE; 559 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 560 break; 561 case 't': 562 opts.touchFlag = TRUE; 563 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 564 break; 565 case 'w': 566 opts.enterFlag = TRUE; 567 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 568 break; 569 default: 570 case '?': 571 usage(); 572 } 573 return TRUE; 574 } 575 576 /* Parse the given arguments. Called from main() and from 577 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 578 * 579 * The arguments must be treated as read-only and will be freed after the 580 * call. 581 * 582 * XXX: Deal with command line overriding .MAKEFLAGS in makefile */ 583 static void 584 MainParseArgs(int argc, char **argv) 585 { 586 char c; 587 int arginc; 588 char *argvalue; 589 char *optscan; 590 Boolean inOption, dashDash = FALSE; 591 592 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 593 /* Can't actually use getopt(3) because rescanning is not portable */ 594 595 rearg: 596 inOption = FALSE; 597 optscan = NULL; 598 while (argc > 1) { 599 const char *optspec; 600 if (!inOption) 601 optscan = argv[1]; 602 c = *optscan++; 603 arginc = 0; 604 if (inOption) { 605 if (c == '\0') { 606 argv++; 607 argc--; 608 inOption = FALSE; 609 continue; 610 } 611 } else { 612 if (c != '-' || dashDash) 613 break; 614 inOption = TRUE; 615 c = *optscan++; 616 } 617 /* '-' found at some earlier point */ 618 optspec = strchr(optspecs, c); 619 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 620 /* -<something> found, and <something> should have an arg */ 621 inOption = FALSE; 622 arginc = 1; 623 argvalue = optscan; 624 if (*argvalue == '\0') { 625 if (argc < 3) 626 goto noarg; 627 argvalue = argv[2]; 628 arginc = 2; 629 } 630 } else { 631 argvalue = NULL; 632 } 633 switch (c) { 634 case '\0': 635 arginc = 1; 636 inOption = FALSE; 637 break; 638 case '-': 639 dashDash = TRUE; 640 break; 641 default: 642 if (!MainParseArg(c, argvalue)) 643 goto noarg; 644 } 645 argv += arginc; 646 argc -= arginc; 647 } 648 649 /* 650 * See if the rest of the arguments are variable assignments and 651 * perform them if so. Else take them to be targets and stuff them 652 * on the end of the "create" list. 653 */ 654 for (; argc > 1; ++argv, --argc) { 655 VarAssign var; 656 if (Parse_IsVar(argv[1], &var)) { 657 Parse_DoVar(&var, VAR_CMDLINE); 658 } else { 659 if (argv[1][0] == '\0') 660 Punt("illegal (null) argument."); 661 if (argv[1][0] == '-' && !dashDash) 662 goto rearg; 663 Lst_Append(&opts.create, bmake_strdup(argv[1])); 664 } 665 } 666 667 return; 668 noarg: 669 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 670 progname, c); 671 usage(); 672 } 673 674 /* Break a line of arguments into words and parse them. 675 * 676 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 677 * by main() when reading the MAKEFLAGS environment variable. */ 678 void 679 Main_ParseArgLine(const char *line) 680 { 681 Words words; 682 char *buf; 683 684 if (line == NULL) 685 return; 686 /* XXX: don't use line as an iterator variable */ 687 for (; *line == ' '; ++line) 688 continue; 689 if (line[0] == '\0') 690 return; 691 692 { 693 FStr argv0 = Var_Value(".MAKE", VAR_GLOBAL); 694 buf = str_concat3(argv0.str, " ", line); 695 FStr_Done(&argv0); 696 } 697 698 words = Str_Words(buf, TRUE); 699 if (words.words == NULL) { 700 Error("Unterminated quoted string [%s]", buf); 701 free(buf); 702 return; 703 } 704 free(buf); 705 MainParseArgs((int)words.len, words.words); 706 707 Words_Free(words); 708 } 709 710 Boolean 711 Main_SetObjdir(Boolean writable, const char *fmt, ...) 712 { 713 struct stat sb; 714 char *path; 715 char buf[MAXPATHLEN + 1]; 716 char buf2[MAXPATHLEN + 1]; 717 Boolean rc = FALSE; 718 va_list ap; 719 720 va_start(ap, fmt); 721 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 722 va_end(ap); 723 724 if (path[0] != '/') { 725 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 726 path = buf2; 727 } 728 729 /* look for the directory and try to chdir there */ 730 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 731 if ((writable && access(path, W_OK) != 0) || 732 (chdir(path) != 0)) { 733 (void)fprintf(stderr, "%s warning: %s: %s.\n", 734 progname, path, strerror(errno)); 735 } else { 736 snprintf(objdir, sizeof objdir, "%s", path); 737 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 738 setenv("PWD", objdir, 1); 739 Dir_InitDot(); 740 purge_relative_cached_realpaths(); 741 rc = TRUE; 742 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 743 enterFlagObj = TRUE; 744 } 745 } 746 747 return rc; 748 } 749 750 static Boolean 751 SetVarObjdir(Boolean writable, const char *var, const char *suffix) 752 { 753 FStr path = Var_Value(var, VAR_CMDLINE); 754 FStr xpath; 755 756 if (path.str == NULL || path.str[0] == '\0') { 757 FStr_Done(&path); 758 return FALSE; 759 } 760 761 /* expand variable substitutions */ 762 xpath = FStr_InitRefer(path.str); 763 if (strchr(path.str, '$') != 0) { 764 char *expanded; 765 (void)Var_Subst(path.str, VAR_GLOBAL, VARE_WANTRES, &expanded); 766 /* TODO: handle errors */ 767 xpath = FStr_InitOwn(expanded); 768 } 769 770 (void)Main_SetObjdir(writable, "%s%s", xpath.str, suffix); 771 772 FStr_Done(&xpath); 773 FStr_Done(&path); 774 return TRUE; 775 } 776 777 /* Splits str into words, adding them to the list. 778 * The string must be kept alive as long as the list. */ 779 int 780 str2Lst_Append(StringList *lp, char *str) 781 { 782 char *cp; 783 int n; 784 785 const char *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 /* Allow makefiles some control over the mode we run in. */ 811 static void 812 MakeMode(void) 813 { 814 FStr mode = FStr_InitRefer(NULL); 815 816 if (mode.str == NULL) { 817 char *expanded; 818 (void)Var_Subst("${" MAKE_MODE ":tl}", 819 VAR_GLOBAL, VARE_WANTRES, &expanded); 820 /* TODO: handle errors */ 821 mode = FStr_InitOwn(expanded); 822 } 823 824 if (mode.str[0] != '\0') { 825 if (strstr(mode.str, "compat")) { 826 opts.compatMake = TRUE; 827 forceJobs = FALSE; 828 } 829 #if USE_META 830 if (strstr(mode.str, "meta")) 831 meta_mode_init(mode.str); 832 #endif 833 } 834 835 FStr_Done(&mode); 836 } 837 838 static void 839 PrintVar(const char *varname, Boolean expandVars) 840 { 841 if (strchr(varname, '$')) { 842 char *evalue; 843 (void)Var_Subst(varname, VAR_GLOBAL, VARE_WANTRES, &evalue); 844 /* TODO: handle errors */ 845 printf("%s\n", evalue); 846 bmake_free(evalue); 847 848 } else if (expandVars) { 849 char *expr = str_concat3("${", varname, "}"); 850 char *evalue; 851 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &evalue); 852 /* TODO: handle errors */ 853 free(expr); 854 printf("%s\n", evalue); 855 bmake_free(evalue); 856 857 } else { 858 FStr value = Var_Value(varname, VAR_GLOBAL); 859 printf("%s\n", value.str != NULL ? value.str : ""); 860 FStr_Done(&value); 861 } 862 } 863 864 /* 865 * Return a Boolean based on a variable. 866 * 867 * If the knob is not set, return the fallback. 868 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 869 * is FALSE, otherwise TRUE. 870 */ 871 static Boolean 872 GetBooleanVar(const char *varname, Boolean fallback) 873 { 874 char *expr = str_concat3("${", varname, ":U}"); 875 char *value; 876 Boolean res; 877 878 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 879 /* TODO: handle errors */ 880 res = ParseBoolean(value, fallback); 881 free(value); 882 free(expr); 883 return res; 884 } 885 886 static void 887 doPrintVars(void) 888 { 889 StringListNode *ln; 890 Boolean expandVars; 891 892 if (opts.printVars == PVM_EXPANDED) 893 expandVars = TRUE; 894 else if (opts.debugVflag) 895 expandVars = FALSE; 896 else 897 expandVars = GetBooleanVar(".MAKE.EXPAND_VARIABLES", FALSE); 898 899 for (ln = opts.variables.first; ln != NULL; ln = ln->next) { 900 const char *varname = ln->datum; 901 PrintVar(varname, expandVars); 902 } 903 } 904 905 static Boolean 906 runTargets(void) 907 { 908 GNodeList targs = LST_INIT; /* target nodes to create */ 909 Boolean outOfDate; /* FALSE if all targets up to date */ 910 911 /* 912 * Have now read the entire graph and need to make a list of 913 * targets to create. If none was given on the command line, 914 * we consult the parsing module to find the main target(s) 915 * to create. 916 */ 917 if (Lst_IsEmpty(&opts.create)) 918 Parse_MainName(&targs); 919 else 920 Targ_FindList(&targs, &opts.create); 921 922 if (!opts.compatMake) { 923 /* 924 * Initialize job module before traversing the graph 925 * now that any .BEGIN and .END targets have been read. 926 * This is done only if the -q flag wasn't given 927 * (to prevent the .BEGIN from being executed should 928 * it exist). 929 */ 930 if (!opts.queryFlag) { 931 Job_Init(); 932 jobsRunning = TRUE; 933 } 934 935 /* Traverse the graph, checking on all the targets */ 936 outOfDate = Make_Run(&targs); 937 } else { 938 /* 939 * Compat_Init will take care of creating all the 940 * targets as well as initializing the module. 941 */ 942 Compat_Run(&targs); 943 outOfDate = FALSE; 944 } 945 Lst_Done(&targs); /* Don't free the nodes. */ 946 return outOfDate; 947 } 948 949 /* 950 * Set up the .TARGETS variable to contain the list of targets to be 951 * created. If none specified, make the variable empty -- the parser 952 * will fill the thing in with the default or .MAIN target. 953 */ 954 static void 955 InitVarTargets(void) 956 { 957 StringListNode *ln; 958 959 if (Lst_IsEmpty(&opts.create)) { 960 Var_Set(".TARGETS", "", VAR_GLOBAL); 961 return; 962 } 963 964 for (ln = opts.create.first; ln != NULL; ln = ln->next) { 965 char *name = ln->datum; 966 Var_Append(".TARGETS", name, VAR_GLOBAL); 967 } 968 } 969 970 static void 971 InitRandom(void) 972 { 973 struct timeval tv; 974 975 gettimeofday(&tv, NULL); 976 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 977 } 978 979 static const char * 980 InitVarMachine(const struct utsname *utsname) 981 { 982 const char *machine = getenv("MACHINE"); 983 if (machine != NULL) 984 return machine; 985 986 #if defined(MAKE_NATIVE) 987 return utsname->machine; 988 #elif defined(MAKE_MACHINE) 989 return MAKE_MACHINE; 990 #else 991 return "unknown"; 992 #endif 993 } 994 995 static const char * 996 InitVarMachineArch(void) 997 { 998 const char *env = getenv("MACHINE_ARCH"); 999 if (env != NULL) 1000 return env; 1001 1002 #ifdef MAKE_NATIVE 1003 { 1004 struct utsname utsname; 1005 static char machine_arch_buf[sizeof utsname.machine]; 1006 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1007 size_t len = sizeof machine_arch_buf; 1008 1009 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1010 &len, NULL, 0) < 0) { 1011 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1012 strerror(errno)); 1013 exit(2); 1014 } 1015 1016 return machine_arch_buf; 1017 } 1018 #elif defined(MACHINE_ARCH) 1019 return MACHINE_ARCH; 1020 #elif defined(MAKE_MACHINE_ARCH) 1021 return MAKE_MACHINE_ARCH; 1022 #else 1023 return "unknown"; 1024 #endif 1025 } 1026 1027 #ifndef NO_PWD_OVERRIDE 1028 /* 1029 * All this code is so that we know where we are when we start up 1030 * on a different machine with pmake. 1031 * 1032 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1033 * since the value of curdir can vary depending on how we got 1034 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1035 * or via subdir.mk in which case its likely a shell which does 1036 * not provide it. 1037 * 1038 * So, to stop it breaking this case only, we ignore PWD if 1039 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1040 */ 1041 static void 1042 HandlePWD(const struct stat *curdir_st) 1043 { 1044 char *pwd; 1045 FStr prefix, makeobjdir; 1046 struct stat pwd_st; 1047 1048 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1049 return; 1050 1051 prefix = Var_Value("MAKEOBJDIRPREFIX", VAR_CMDLINE); 1052 if (prefix.str != NULL) { 1053 FStr_Done(&prefix); 1054 return; 1055 } 1056 1057 makeobjdir = Var_Value("MAKEOBJDIR", VAR_CMDLINE); 1058 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL) 1059 goto ignore_pwd; 1060 1061 if (stat(pwd, &pwd_st) == 0 && 1062 curdir_st->st_ino == pwd_st.st_ino && 1063 curdir_st->st_dev == pwd_st.st_dev) 1064 (void)strncpy(curdir, pwd, MAXPATHLEN); 1065 1066 ignore_pwd: 1067 FStr_Done(&makeobjdir); 1068 } 1069 #endif 1070 1071 /* 1072 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1073 * MAKEOBJDIR is set in the environment, try only that value 1074 * and fall back to .CURDIR if it does not exist. 1075 * 1076 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1077 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1078 * of these paths exist, just use .CURDIR. 1079 */ 1080 static void 1081 InitObjdir(const char *machine, const char *machine_arch) 1082 { 1083 Boolean writable; 1084 1085 Dir_InitCur(curdir); 1086 writable = GetBooleanVar("MAKE_OBJDIR_CHECK_WRITABLE", TRUE); 1087 (void)Main_SetObjdir(FALSE, "%s", curdir); 1088 1089 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1090 !SetVarObjdir(writable, "MAKEOBJDIR", "") && 1091 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1092 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1093 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1094 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1095 } 1096 1097 /* get rid of resource limit on file descriptors */ 1098 static void 1099 UnlimitFiles(void) 1100 { 1101 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1102 struct rlimit rl; 1103 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1104 rl.rlim_cur != rl.rlim_max) { 1105 rl.rlim_cur = rl.rlim_max; 1106 (void)setrlimit(RLIMIT_NOFILE, &rl); 1107 } 1108 #endif 1109 } 1110 1111 static void 1112 CmdOpts_Init(void) 1113 { 1114 opts.compatMake = FALSE; 1115 opts.debug = DEBUG_NONE; 1116 /* opts.debug_file has been initialized earlier */ 1117 opts.strict = FALSE; 1118 opts.debugVflag = FALSE; 1119 opts.checkEnvFirst = FALSE; 1120 Lst_Init(&opts.makefiles); 1121 opts.ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1122 opts.maxJobs = 1; 1123 opts.keepgoing = FALSE; /* Stop on error */ 1124 opts.noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1125 opts.noExecute = FALSE; /* Execute all commands */ 1126 opts.queryFlag = FALSE; 1127 opts.noBuiltins = FALSE; /* Read the built-in rules */ 1128 opts.beSilent = FALSE; /* Print commands as executed */ 1129 opts.touchFlag = FALSE; 1130 opts.printVars = PVM_NONE; 1131 Lst_Init(&opts.variables); 1132 opts.parseWarnFatal = FALSE; 1133 opts.enterFlag = FALSE; 1134 opts.varNoExportEnv = FALSE; 1135 Lst_Init(&opts.create); 1136 } 1137 1138 /* Initialize MAKE and .MAKE to the path of the executable, so that it can be 1139 * found by execvp(3) and the shells, even after a chdir. 1140 * 1141 * If it's a relative path and contains a '/', resolve it to an absolute path. 1142 * Otherwise keep it as is, assuming it will be found in the PATH. */ 1143 static void 1144 InitVarMake(const char *argv0) 1145 { 1146 const char *make = argv0; 1147 1148 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1149 char pathbuf[MAXPATHLEN]; 1150 const char *abspath = cached_realpath(argv0, pathbuf); 1151 struct stat st; 1152 if (abspath != NULL && abspath[0] == '/' && 1153 stat(make, &st) == 0) 1154 make = abspath; 1155 } 1156 1157 Var_Set("MAKE", make, VAR_GLOBAL); 1158 Var_Set(".MAKE", make, VAR_GLOBAL); 1159 } 1160 1161 /* Add the directories from the colon-separated syspath to defSysIncPath. 1162 * After returning, the contents of syspath is unspecified. */ 1163 static void 1164 InitDefSysIncPath(char *syspath) 1165 { 1166 static char defsyspath[] = _PATH_DEFSYSPATH; 1167 char *start, *cp; 1168 1169 /* 1170 * If no user-supplied system path was given (through the -m option) 1171 * add the directories from the DEFSYSPATH (more than one may be given 1172 * as dir1:...:dirn) to the system include path. 1173 */ 1174 if (syspath == NULL || syspath[0] == '\0') 1175 syspath = defsyspath; 1176 else 1177 syspath = bmake_strdup(syspath); 1178 1179 for (start = syspath; *start != '\0'; start = cp) { 1180 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1181 continue; 1182 if (*cp == ':') 1183 *cp++ = '\0'; 1184 1185 /* look for magic parent directory search string */ 1186 if (strncmp(start, ".../", 4) == 0) { 1187 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1188 if (dir != NULL) { 1189 (void)Dir_AddDir(defSysIncPath, dir); 1190 free(dir); 1191 } 1192 } else { 1193 (void)Dir_AddDir(defSysIncPath, start); 1194 } 1195 } 1196 1197 if (syspath != defsyspath) 1198 free(syspath); 1199 } 1200 1201 static void 1202 ReadBuiltinRules(void) 1203 { 1204 StringListNode *ln; 1205 StringList sysMkPath = LST_INIT; 1206 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 1213 for (ln = sysMkPath.first; ln != NULL; ln = ln->next) 1214 if (ReadMakefile(ln->datum) == 0) 1215 break; 1216 1217 if (ln == NULL) 1218 Fatal("%s: cannot open %s.", 1219 progname, (const char *)sysMkPath.first->datum); 1220 1221 /* Free the list but not the actual filenames since these may still 1222 * be used in GNodes. */ 1223 Lst_Done(&sysMkPath); 1224 } 1225 1226 static void 1227 InitMaxJobs(void) 1228 { 1229 char *value; 1230 int n; 1231 1232 if (forceJobs || opts.compatMake || 1233 !Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) 1234 return; 1235 1236 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1237 /* TODO: handle errors */ 1238 n = (int)strtol(value, NULL, 0); 1239 if (n < 1) { 1240 (void)fprintf(stderr, 1241 "%s: illegal value for .MAKE.JOBS " 1242 "-- must be positive integer!\n", 1243 progname); 1244 exit(2); /* Not 1 so -q can distinguish error */ 1245 } 1246 1247 if (n != opts.maxJobs) { 1248 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1249 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1250 } 1251 1252 opts.maxJobs = n; 1253 maxJobTokens = opts.maxJobs; 1254 forceJobs = TRUE; 1255 free(value); 1256 } 1257 1258 /* 1259 * For compatibility, look at the directories in the VPATH variable 1260 * and add them to the search path, if the variable is defined. The 1261 * variable's value is in the same format as the PATH environment 1262 * variable, i.e. <directory>:<directory>:<directory>... 1263 */ 1264 static void 1265 InitVpath(void) 1266 { 1267 char *vpath, savec, *path; 1268 if (!Var_Exists("VPATH", VAR_CMDLINE)) 1269 return; 1270 1271 (void)Var_Subst("${VPATH}", VAR_CMDLINE, VARE_WANTRES, &vpath); 1272 /* TODO: handle errors */ 1273 path = vpath; 1274 do { 1275 char *cp; 1276 /* skip to end of directory */ 1277 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1278 continue; 1279 /* Save terminator character so know when to stop */ 1280 savec = *cp; 1281 *cp = '\0'; 1282 /* Add directory to search path */ 1283 (void)Dir_AddDir(&dirSearchPath, path); 1284 *cp = savec; 1285 path = cp + 1; 1286 } while (savec == ':'); 1287 free(vpath); 1288 } 1289 1290 static void 1291 ReadAllMakefiles(StringList *makefiles) 1292 { 1293 StringListNode *ln; 1294 1295 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1296 const char *fname = ln->datum; 1297 if (ReadMakefile(fname) != 0) 1298 Fatal("%s: cannot open %s.", progname, fname); 1299 } 1300 } 1301 1302 static void 1303 ReadFirstDefaultMakefile(void) 1304 { 1305 StringListNode *ln; 1306 char *prefs; 1307 1308 (void)Var_Subst("${" MAKE_MAKEFILE_PREFERENCE "}", 1309 VAR_CMDLINE, VARE_WANTRES, &prefs); 1310 /* TODO: handle errors */ 1311 1312 /* XXX: This should use a local list instead of opts.makefiles 1313 * since these makefiles do not come from the command line. They 1314 * also have different semantics in that only the first file that 1315 * is found is processed. See ReadAllMakefiles. */ 1316 (void)str2Lst_Append(&opts.makefiles, prefs); 1317 1318 for (ln = opts.makefiles.first; ln != NULL; ln = ln->next) 1319 if (ReadMakefile(ln->datum) == 0) 1320 break; 1321 1322 free(prefs); 1323 } 1324 1325 /* Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1326 * Initialize a few modules. 1327 * Parse the arguments from MAKEFLAGS and the command line. */ 1328 static void 1329 main_Init(int argc, char **argv) 1330 { 1331 struct stat sa; 1332 const char *machine; 1333 const char *machine_arch; 1334 char *syspath = getenv("MAKESYSPATH"); 1335 struct utsname utsname; 1336 1337 /* default to writing debug to stderr */ 1338 opts.debug_file = stderr; 1339 1340 HashTable_Init(&cached_realpaths); 1341 1342 #ifdef SIGINFO 1343 (void)bmake_signal(SIGINFO, siginfo); 1344 #endif 1345 1346 InitRandom(); 1347 1348 progname = str_basename(argv[0]); 1349 1350 UnlimitFiles(); 1351 1352 if (uname(&utsname) == -1) { 1353 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1354 strerror(errno)); 1355 exit(2); 1356 } 1357 1358 /* 1359 * Get the name of this type of MACHINE from utsname 1360 * so we can share an executable for similar machines. 1361 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1362 * 1363 * Note that both MACHINE and MACHINE_ARCH are decided at 1364 * run-time. 1365 */ 1366 machine = InitVarMachine(&utsname); 1367 machine_arch = InitVarMachineArch(); 1368 1369 myPid = getpid(); /* remember this for vFork() */ 1370 1371 /* 1372 * Just in case MAKEOBJDIR wants us to do something tricky. 1373 */ 1374 Targ_Init(); 1375 Var_Init(); 1376 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1377 Var_Set("MACHINE", machine, VAR_GLOBAL); 1378 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1379 #ifdef MAKE_VERSION 1380 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1381 #endif 1382 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1383 /* 1384 * This is the traditional preference for makefiles. 1385 */ 1386 #ifndef MAKEFILE_PREFERENCE_LIST 1387 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1388 #endif 1389 Var_Set(MAKE_MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, VAR_GLOBAL); 1390 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1391 1392 CmdOpts_Init(); 1393 allPrecious = FALSE; /* Remove targets when interrupted */ 1394 deleteOnError = FALSE; /* Historical default behavior */ 1395 jobsRunning = FALSE; 1396 1397 maxJobTokens = opts.maxJobs; 1398 ignorePWD = FALSE; 1399 1400 /* 1401 * Initialize the parsing, directory and variable modules to prepare 1402 * for the reading of inclusion paths and variable settings on the 1403 * command line 1404 */ 1405 1406 /* 1407 * Initialize various variables. 1408 * MAKE also gets this name, for compatibility 1409 * .MAKEFLAGS gets set to the empty string just in case. 1410 * MFLAGS also gets initialized empty, for compatibility. 1411 */ 1412 Parse_Init(); 1413 InitVarMake(argv[0]); 1414 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1415 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1416 Var_Set("MFLAGS", "", VAR_GLOBAL); 1417 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1418 /* some makefiles need to know this */ 1419 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMDLINE); 1420 1421 /* Set some other useful variables. */ 1422 { 1423 char tmp[64], *ep = getenv(MAKE_LEVEL_ENV); 1424 1425 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1426 if (makelevel < 0) 1427 makelevel = 0; 1428 snprintf(tmp, sizeof tmp, "%d", makelevel); 1429 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1430 snprintf(tmp, sizeof tmp, "%u", myPid); 1431 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1432 snprintf(tmp, sizeof tmp, "%u", getppid()); 1433 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1434 snprintf(tmp, sizeof tmp, "%u", getuid()); 1435 Var_Set(".MAKE.UID", tmp, VAR_GLOBAL); 1436 snprintf(tmp, sizeof tmp, "%u", getgid()); 1437 Var_Set(".MAKE.GID", tmp, VAR_GLOBAL); 1438 } 1439 if (makelevel > 0) { 1440 char pn[1024]; 1441 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1442 progname = bmake_strdup(pn); 1443 } 1444 1445 #ifdef USE_META 1446 meta_init(); 1447 #endif 1448 Dir_Init(); 1449 1450 /* 1451 * First snag any flags out of the MAKE environment variable. 1452 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1453 * in a different format). 1454 */ 1455 #ifdef POSIX 1456 { 1457 char *p1 = explode(getenv("MAKEFLAGS")); 1458 Main_ParseArgLine(p1); 1459 free(p1); 1460 } 1461 #else 1462 Main_ParseArgLine(getenv("MAKE")); 1463 #endif 1464 1465 /* 1466 * Find where we are (now). 1467 * We take care of PWD for the automounter below... 1468 */ 1469 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1470 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1471 progname, strerror(errno)); 1472 exit(2); 1473 } 1474 1475 MainParseArgs(argc, argv); 1476 1477 if (opts.enterFlag) 1478 printf("%s: Entering directory `%s'\n", progname, curdir); 1479 1480 /* 1481 * Verify that cwd is sane. 1482 */ 1483 if (stat(curdir, &sa) == -1) { 1484 (void)fprintf(stderr, "%s: %s: %s.\n", 1485 progname, curdir, strerror(errno)); 1486 exit(2); 1487 } 1488 1489 #ifndef NO_PWD_OVERRIDE 1490 HandlePWD(&sa); 1491 #endif 1492 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1493 1494 InitObjdir(machine, machine_arch); 1495 1496 /* 1497 * Initialize archive, target and suffix modules in preparation for 1498 * parsing the makefile(s) 1499 */ 1500 Arch_Init(); 1501 Suff_Init(); 1502 Trace_Init(tracefile); 1503 1504 defaultNode = NULL; 1505 (void)time(&now); 1506 1507 Trace_Log(MAKESTART, NULL); 1508 1509 InitVarTargets(); 1510 1511 InitDefSysIncPath(syspath); 1512 } 1513 1514 /* Read the system makefile followed by either makefile, Makefile or the 1515 * files given by the -f option. Exit on parse errors. */ 1516 static void 1517 main_ReadFiles(void) 1518 { 1519 1520 if (!opts.noBuiltins) 1521 ReadBuiltinRules(); 1522 1523 if (!Lst_IsEmpty(&opts.makefiles)) 1524 ReadAllMakefiles(&opts.makefiles); 1525 else 1526 ReadFirstDefaultMakefile(); 1527 } 1528 1529 /* Compute the dependency graph. */ 1530 static void 1531 main_PrepareMaking(void) 1532 { 1533 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1534 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1535 (void)Var_Subst("${.MAKE.DEPENDFILE}", 1536 VAR_CMDLINE, VARE_WANTRES, &makeDependfile); 1537 if (makeDependfile[0] != '\0') { 1538 /* TODO: handle errors */ 1539 doing_depend = TRUE; 1540 (void)ReadMakefile(makeDependfile); 1541 doing_depend = FALSE; 1542 } 1543 } 1544 1545 if (enterFlagObj) 1546 printf("%s: Entering directory `%s'\n", progname, objdir); 1547 1548 MakeMode(); 1549 1550 { 1551 FStr makeflags = Var_Value(MAKEFLAGS, VAR_GLOBAL); 1552 Var_Append("MFLAGS", makeflags.str, VAR_GLOBAL); 1553 FStr_Done(&makeflags); 1554 } 1555 1556 InitMaxJobs(); 1557 1558 /* 1559 * Be compatible if the user did not specify -j and did not explicitly 1560 * turn compatibility on. 1561 */ 1562 if (!opts.compatMake && !forceJobs) 1563 opts.compatMake = TRUE; 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 == PVM_NONE) 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 1591 /* Make the targets. 1592 * If the -v or -V options are given, print variables instead. 1593 * Return whether any of the targets is out-of-date. */ 1594 static Boolean 1595 main_Run(void) 1596 { 1597 if (opts.printVars != PVM_NONE) { 1598 /* print the values of any variables requested by the user */ 1599 doPrintVars(); 1600 return FALSE; 1601 } else { 1602 return runTargets(); 1603 } 1604 } 1605 1606 /* Clean up after making the targets. */ 1607 static void 1608 main_CleanUp(void) 1609 { 1610 #ifdef CLEANUP 1611 Lst_DoneCall(&opts.variables, free); 1612 /* 1613 * Don't free the actual strings from opts.makefiles, they may be 1614 * used in GNodes. 1615 */ 1616 Lst_Done(&opts.makefiles); 1617 Lst_DoneCall(&opts.create, free); 1618 #endif 1619 1620 /* print the graph now it's been processed if the user requested it */ 1621 if (DEBUG(GRAPH2)) 1622 Targ_PrintGraph(2); 1623 1624 Trace_Log(MAKEEND, NULL); 1625 1626 if (enterFlagObj) 1627 printf("%s: Leaving directory `%s'\n", progname, objdir); 1628 if (opts.enterFlag) 1629 printf("%s: Leaving directory `%s'\n", progname, curdir); 1630 1631 #ifdef USE_META 1632 meta_finish(); 1633 #endif 1634 Suff_End(); 1635 Targ_End(); 1636 Arch_End(); 1637 Var_End(); 1638 Parse_End(); 1639 Dir_End(); 1640 Job_End(); 1641 Trace_End(); 1642 } 1643 1644 /* Determine the exit code. */ 1645 static int 1646 main_Exit(Boolean outOfDate) 1647 { 1648 if (opts.strict && (main_errors > 0 || Parse_GetFatals() > 0)) 1649 return 2; /* Not 1 so -q can distinguish error */ 1650 return outOfDate ? 1 : 0; 1651 } 1652 1653 int 1654 main(int argc, char **argv) 1655 { 1656 Boolean outOfDate; 1657 1658 main_Init(argc, argv); 1659 main_ReadFiles(); 1660 main_PrepareMaking(); 1661 outOfDate = main_Run(); 1662 main_CleanUp(); 1663 return main_Exit(outOfDate); 1664 } 1665 1666 /* Open and parse the given makefile, with all its side effects. 1667 * 1668 * Results: 1669 * 0 if ok. -1 if couldn't open file. 1670 */ 1671 static int 1672 ReadMakefile(const char *fname) 1673 { 1674 int fd; 1675 char *name, *path = NULL; 1676 1677 if (strcmp(fname, "-") == 0) { 1678 Parse_File(NULL /*stdin*/, -1); 1679 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1680 } else { 1681 /* if we've chdir'd, rebuild the path name */ 1682 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1683 path = str_concat3(curdir, "/", fname); 1684 fd = open(path, O_RDONLY); 1685 if (fd != -1) { 1686 fname = path; 1687 goto found; 1688 } 1689 free(path); 1690 1691 /* If curdir failed, try objdir (ala .depend) */ 1692 path = str_concat3(objdir, "/", fname); 1693 fd = open(path, O_RDONLY); 1694 if (fd != -1) { 1695 fname = path; 1696 goto found; 1697 } 1698 } else { 1699 fd = open(fname, O_RDONLY); 1700 if (fd != -1) 1701 goto found; 1702 } 1703 /* look in -I and system include directories. */ 1704 name = Dir_FindFile(fname, parseIncPath); 1705 if (name == NULL) { 1706 SearchPath *sysInc = Lst_IsEmpty(sysIncPath) 1707 ? defSysIncPath : sysIncPath; 1708 name = Dir_FindFile(fname, sysInc); 1709 } 1710 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1711 free(name); 1712 free(path); 1713 return -1; 1714 } 1715 fname = name; 1716 /* 1717 * set the MAKEFILE variable desired by System V fans -- the 1718 * placement of the setting here means it gets set to the last 1719 * makefile specified, as it is set by SysV make. 1720 */ 1721 found: 1722 if (!doing_depend) 1723 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1724 Parse_File(fname, fd); 1725 } 1726 free(path); 1727 return 0; 1728 } 1729 1730 /*- 1731 * Cmd_Exec -- 1732 * Execute the command in cmd, and return the output of that command 1733 * in a string. In the output, newlines are replaced with spaces. 1734 * 1735 * Results: 1736 * A string containing the output of the command, or the empty string. 1737 * *errfmt returns a format string describing the command failure, 1738 * if any, using a single %s conversion specification. 1739 * 1740 * Side Effects: 1741 * The string must be freed by the caller. 1742 */ 1743 char * 1744 Cmd_Exec(const char *cmd, const char **errfmt) 1745 { 1746 const char *args[4]; /* Args for invoking the shell */ 1747 int pipefds[2]; 1748 int cpid; /* Child PID */ 1749 int pid; /* PID from wait() */ 1750 int status; /* command exit status */ 1751 Buffer buf; /* buffer to store the result */ 1752 ssize_t bytes_read; 1753 char *res; /* result */ 1754 size_t res_len; 1755 char *cp; 1756 int savederr; /* saved errno */ 1757 1758 *errfmt = NULL; 1759 1760 if (!shellName) 1761 Shell_Init(); 1762 /* 1763 * Set up arguments for shell 1764 */ 1765 args[0] = shellName; 1766 args[1] = "-c"; 1767 args[2] = cmd; 1768 args[3] = NULL; 1769 1770 /* 1771 * Open a pipe for fetching its output 1772 */ 1773 if (pipe(pipefds) == -1) { 1774 *errfmt = "Couldn't create pipe for \"%s\""; 1775 goto bad; 1776 } 1777 1778 Var_ReexportVars(); 1779 1780 /* 1781 * Fork 1782 */ 1783 switch (cpid = vFork()) { 1784 case 0: 1785 (void)close(pipefds[0]); /* Close input side of pipe */ 1786 1787 /* 1788 * Duplicate the output stream to the shell's output, then 1789 * shut the extra thing down. Note we don't fetch the error 1790 * stream...why not? Why? 1791 */ 1792 (void)dup2(pipefds[1], 1); 1793 (void)close(pipefds[1]); 1794 1795 (void)execv(shellPath, UNCONST(args)); 1796 _exit(1); 1797 /*NOTREACHED*/ 1798 1799 case -1: 1800 *errfmt = "Couldn't exec \"%s\""; 1801 goto bad; 1802 1803 default: 1804 (void)close(pipefds[1]); /* No need for the writing half */ 1805 1806 savederr = 0; 1807 Buf_Init(&buf); 1808 1809 do { 1810 char result[BUFSIZ]; 1811 bytes_read = read(pipefds[0], result, sizeof result); 1812 if (bytes_read > 0) 1813 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1814 } while (bytes_read > 0 || 1815 (bytes_read == -1 && errno == EINTR)); 1816 if (bytes_read == -1) 1817 savederr = errno; 1818 1819 (void)close(pipefds[0]); /* Close the input side of the pipe. */ 1820 1821 /* Wait for the process to exit. */ 1822 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1823 JobReapChild(pid, status, FALSE); 1824 1825 res_len = Buf_Len(&buf); 1826 res = Buf_Destroy(&buf, FALSE); 1827 1828 if (savederr != 0) 1829 *errfmt = "Couldn't read shell's output for \"%s\""; 1830 1831 if (WIFSIGNALED(status)) 1832 *errfmt = "\"%s\" exited on a signal"; 1833 else if (WEXITSTATUS(status) != 0) 1834 *errfmt = "\"%s\" returned non-zero status"; 1835 1836 /* Convert newlines to spaces. A final newline is just stripped */ 1837 if (res_len > 0 && res[res_len - 1] == '\n') 1838 res[res_len - 1] = '\0'; 1839 for (cp = res; *cp != '\0'; cp++) 1840 if (*cp == '\n') 1841 *cp = ' '; 1842 break; 1843 } 1844 return res; 1845 bad: 1846 return bmake_strdup(""); 1847 } 1848 1849 /* Print a printf-style error message. 1850 * 1851 * In default mode, this error message has no consequences, in particular it 1852 * does not affect the exit status. Only in lint mode (-dL) it does. */ 1853 void 1854 Error(const char *fmt, ...) 1855 { 1856 va_list ap; 1857 FILE *err_file; 1858 1859 err_file = opts.debug_file; 1860 if (err_file == stdout) 1861 err_file = stderr; 1862 (void)fflush(stdout); 1863 for (;;) { 1864 va_start(ap, fmt); 1865 fprintf(err_file, "%s: ", progname); 1866 (void)vfprintf(err_file, fmt, ap); 1867 va_end(ap); 1868 (void)fprintf(err_file, "\n"); 1869 (void)fflush(err_file); 1870 if (err_file == stderr) 1871 break; 1872 err_file = stderr; 1873 } 1874 main_errors++; 1875 } 1876 1877 /* Wait for any running jobs to finish, then produce an error message, 1878 * finally exit immediately. 1879 * 1880 * Exiting immediately differs from Parse_Error, which exits only after the 1881 * current top-level makefile has been parsed completely. */ 1882 void 1883 Fatal(const char *fmt, ...) 1884 { 1885 va_list ap; 1886 1887 if (jobsRunning) 1888 Job_Wait(); 1889 1890 (void)fflush(stdout); 1891 va_start(ap, fmt); 1892 (void)vfprintf(stderr, fmt, ap); 1893 va_end(ap); 1894 (void)fprintf(stderr, "\n"); 1895 (void)fflush(stderr); 1896 1897 PrintOnError(NULL, NULL); 1898 1899 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1900 Targ_PrintGraph(2); 1901 Trace_Log(MAKEERROR, NULL); 1902 exit(2); /* Not 1 so -q can distinguish error */ 1903 } 1904 1905 /* Major exception once jobs are being created. 1906 * Kills all jobs, prints a message and exits. */ 1907 void 1908 Punt(const char *fmt, ...) 1909 { 1910 va_list ap; 1911 1912 va_start(ap, fmt); 1913 (void)fflush(stdout); 1914 (void)fprintf(stderr, "%s: ", progname); 1915 (void)vfprintf(stderr, fmt, ap); 1916 va_end(ap); 1917 (void)fprintf(stderr, "\n"); 1918 (void)fflush(stderr); 1919 1920 PrintOnError(NULL, NULL); 1921 1922 DieHorribly(); 1923 } 1924 1925 /* Exit without giving a message. */ 1926 void 1927 DieHorribly(void) 1928 { 1929 if (jobsRunning) 1930 Job_AbortAll(); 1931 if (DEBUG(GRAPH2)) 1932 Targ_PrintGraph(2); 1933 Trace_Log(MAKEERROR, NULL); 1934 exit(2); /* Not 1 so -q can distinguish error */ 1935 } 1936 1937 /* Called when aborting due to errors in child shell to signal abnormal exit. 1938 * The program exits. 1939 * Errors is the number of errors encountered in Make_Make. */ 1940 void 1941 Finish(int errs) 1942 { 1943 if (shouldDieQuietly(NULL, -1)) 1944 exit(2); 1945 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1946 } 1947 1948 /* 1949 * eunlink -- 1950 * Remove a file carefully, avoiding directories. 1951 */ 1952 int 1953 eunlink(const char *file) 1954 { 1955 struct stat st; 1956 1957 if (lstat(file, &st) == -1) 1958 return -1; 1959 1960 if (S_ISDIR(st.st_mode)) { 1961 errno = EISDIR; 1962 return -1; 1963 } 1964 return unlink(file); 1965 } 1966 1967 static void 1968 write_all(int fd, const void *data, size_t n) 1969 { 1970 const char *mem = data; 1971 1972 while (n > 0) { 1973 ssize_t written = write(fd, mem, n); 1974 if (written == -1 && errno == EAGAIN) 1975 continue; 1976 if (written == -1) 1977 break; 1978 mem += written; 1979 n -= (size_t)written; 1980 } 1981 } 1982 1983 /* 1984 * execDie -- 1985 * Print why exec failed, avoiding stdio. 1986 */ 1987 void MAKE_ATTR_DEAD 1988 execDie(const char *af, const char *av) 1989 { 1990 Buffer buf; 1991 1992 Buf_Init(&buf); 1993 Buf_AddStr(&buf, progname); 1994 Buf_AddStr(&buf, ": "); 1995 Buf_AddStr(&buf, af); 1996 Buf_AddStr(&buf, "("); 1997 Buf_AddStr(&buf, av); 1998 Buf_AddStr(&buf, ") failed ("); 1999 Buf_AddStr(&buf, strerror(errno)); 2000 Buf_AddStr(&buf, ")\n"); 2001 2002 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 2003 2004 Buf_Destroy(&buf, TRUE); 2005 _exit(1); 2006 } 2007 2008 /* purge any relative paths */ 2009 static void 2010 purge_relative_cached_realpaths(void) 2011 { 2012 HashEntry *he, *nhe; 2013 HashIter hi; 2014 2015 HashIter_Init(&hi, &cached_realpaths); 2016 he = HashIter_Next(&hi); 2017 while (he != NULL) { 2018 nhe = HashIter_Next(&hi); 2019 if (he->key[0] != '/') { 2020 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key); 2021 HashTable_DeleteEntry(&cached_realpaths, he); 2022 /* XXX: What about the allocated he->value? Either 2023 * free them or document why they cannot be freed. */ 2024 } 2025 he = nhe; 2026 } 2027 } 2028 2029 char * 2030 cached_realpath(const char *pathname, char *resolved) 2031 { 2032 const char *rp; 2033 2034 if (pathname == NULL || pathname[0] == '\0') 2035 return NULL; 2036 2037 rp = HashTable_FindValue(&cached_realpaths, pathname); 2038 if (rp != NULL) { 2039 /* a hit */ 2040 strncpy(resolved, rp, MAXPATHLEN); 2041 resolved[MAXPATHLEN - 1] = '\0'; 2042 return resolved; 2043 } 2044 2045 rp = realpath(pathname, resolved); 2046 if (rp != NULL) { 2047 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp)); 2048 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp); 2049 return resolved; 2050 } 2051 2052 /* should we negative-cache? */ 2053 return NULL; 2054 } 2055 2056 /* 2057 * Return true if we should die without noise. 2058 * For example our failing child was a sub-make or failure happened elsewhere. 2059 */ 2060 Boolean 2061 shouldDieQuietly(GNode *gn, int bf) 2062 { 2063 static int quietly = -1; 2064 2065 if (quietly < 0) { 2066 if (DEBUG(JOB) || !GetBooleanVar(".MAKE.DIE_QUIETLY", TRUE)) 2067 quietly = 0; 2068 else if (bf >= 0) 2069 quietly = bf; 2070 else 2071 quietly = gn != NULL && (gn->type & OP_MAKE); 2072 } 2073 return quietly; 2074 } 2075 2076 static void 2077 SetErrorVars(GNode *gn) 2078 { 2079 StringListNode *ln; 2080 2081 /* 2082 * We can print this even if there is no .ERROR target. 2083 */ 2084 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2085 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2086 2087 for (ln = gn->commands.first; ln != NULL; ln = ln->next) { 2088 const char *cmd = ln->datum; 2089 2090 if (cmd == NULL) 2091 break; 2092 Var_Append(".ERROR_CMD", cmd, VAR_GLOBAL); 2093 } 2094 } 2095 2096 /* Print some helpful information in case of an error. 2097 * The caller should exit soon after calling this function. */ 2098 void 2099 PrintOnError(GNode *gn, const char *msg) 2100 { 2101 static GNode *errorNode = NULL; 2102 2103 if (DEBUG(HASH)) { 2104 Targ_Stats(); 2105 Var_Stats(); 2106 } 2107 2108 /* we generally want to keep quiet if a sub-make died */ 2109 if (shouldDieQuietly(gn, -1)) 2110 return; 2111 2112 if (msg != NULL) 2113 printf("%s", msg); 2114 printf("\n%s: stopped in %s\n", progname, curdir); 2115 2116 if (errorNode != NULL) 2117 return; /* we've been here! */ 2118 2119 if (gn != NULL) 2120 SetErrorVars(gn); 2121 2122 { 2123 char *errorVarsValues; 2124 (void)Var_Subst("${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2125 VAR_GLOBAL, VARE_WANTRES, &errorVarsValues); 2126 /* TODO: handle errors */ 2127 printf("%s", errorVarsValues); 2128 free(errorVarsValues); 2129 } 2130 2131 fflush(stdout); 2132 2133 /* 2134 * Finally, see if there is a .ERROR target, and run it if so. 2135 */ 2136 errorNode = Targ_FindNode(".ERROR"); 2137 if (errorNode != NULL) { 2138 errorNode->type |= OP_SPECIAL; 2139 Compat_Make(errorNode, errorNode); 2140 } 2141 } 2142 2143 void 2144 Main_ExportMAKEFLAGS(Boolean first) 2145 { 2146 static Boolean once = TRUE; 2147 const char *expr; 2148 char *s; 2149 2150 if (once != first) 2151 return; 2152 once = FALSE; 2153 2154 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2155 (void)Var_Subst(expr, VAR_CMDLINE, VARE_WANTRES, &s); 2156 /* TODO: handle errors */ 2157 if (s[0] != '\0') { 2158 #ifdef POSIX 2159 setenv("MAKEFLAGS", s, 1); 2160 #else 2161 setenv("MAKE", s, 1); 2162 #endif 2163 } 2164 } 2165 2166 char * 2167 getTmpdir(void) 2168 { 2169 static char *tmpdir = NULL; 2170 struct stat st; 2171 2172 if (tmpdir != NULL) 2173 return tmpdir; 2174 2175 /* Honor $TMPDIR but only if it is valid. Ensure it ends with '/'. */ 2176 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", 2177 VAR_GLOBAL, VARE_WANTRES, &tmpdir); 2178 /* TODO: handle errors */ 2179 2180 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2181 free(tmpdir); 2182 tmpdir = bmake_strdup(_PATH_TMP); 2183 } 2184 return tmpdir; 2185 } 2186 2187 /* 2188 * Create and open a temp file using "pattern". 2189 * If out_fname is provided, set it to a copy of the filename created. 2190 * Otherwise unlink the file once open. 2191 */ 2192 int 2193 mkTempFile(const char *pattern, char **out_fname) 2194 { 2195 static char *tmpdir = NULL; 2196 char tfile[MAXPATHLEN]; 2197 int fd; 2198 2199 if (pattern == NULL) 2200 pattern = TMPPAT; 2201 if (tmpdir == NULL) 2202 tmpdir = getTmpdir(); 2203 if (pattern[0] == '/') { 2204 snprintf(tfile, sizeof tfile, "%s", pattern); 2205 } else { 2206 snprintf(tfile, sizeof tfile, "%s%s", tmpdir, pattern); 2207 } 2208 if ((fd = mkstemp(tfile)) < 0) 2209 Punt("Could not create temporary file %s: %s", tfile, 2210 strerror(errno)); 2211 if (out_fname != NULL) { 2212 *out_fname = bmake_strdup(tfile); 2213 } else { 2214 unlink(tfile); /* we just want the descriptor */ 2215 } 2216 return fd; 2217 } 2218 2219 /* 2220 * Convert a string representation of a boolean into a boolean value. 2221 * Anything that looks like "No", "False", "Off", "0" etc. is FALSE, 2222 * the empty string is the fallback, everything else is TRUE. 2223 */ 2224 Boolean 2225 ParseBoolean(const char *s, Boolean fallback) 2226 { 2227 char ch = ch_tolower(s[0]); 2228 if (ch == '\0') 2229 return fallback; 2230 if (ch == '0' || ch == 'f' || ch == 'n') 2231 return FALSE; 2232 if (ch == 'o') 2233 return ch_tolower(s[1]) != 'f'; 2234 return TRUE; 2235 } 2236
Indexes created Tue Sep 23 07:09:52 GMT 2025