main.c revision 1.508
1 /* $NetBSD: main.c,v 1.508 2020/12/31 17:39:36 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 * The main file for this entire program. Exit routines etc. reside here. 73 * 74 * Utility functions defined in this file: 75 * 76 * Main_ParseArgLine Parse and process command line arguments from 77 * a single string. Used to implement the 78 * special targets .MFLAGS and .MAKEFLAGS. 79 * 80 * Error Print a tagged error message. 81 * 82 * Fatal Print an error message and exit. 83 * 84 * Punt Abort all jobs and exit with a message. 85 * 86 * Finish Finish things up by printing the number of 87 * errors which occurred, and exit. 88 */ 89 90 #include <sys/types.h> 91 #include <sys/time.h> 92 #include <sys/param.h> 93 #include <sys/resource.h> 94 #include <sys/stat.h> 95 #ifdef MAKE_NATIVE 96 #include <sys/sysctl.h> 97 #endif 98 #include <sys/utsname.h> 99 #include <sys/wait.h> 100 101 #include <errno.h> 102 #include <signal.h> 103 #include <stdarg.h> 104 #include <time.h> 105 106 #include "make.h" 107 #include "dir.h" 108 #include "job.h" 109 #include "pathnames.h" 110 #include "trace.h" 111 112 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 113 MAKE_RCSID("$NetBSD: main.c,v 1.508 2020/12/31 17:39:36 rillig Exp $"); 114 #if defined(MAKE_NATIVE) && !defined(lint) 115 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 " 116 "The Regents of the University of California. " 117 "All rights reserved."); 118 #endif 119 120 CmdOpts opts; 121 time_t now; /* Time at start of make */ 122 GNode *defaultNode; /* .DEFAULT node */ 123 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 124 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 125 126 static int maxJobTokens; /* -j argument */ 127 Boolean enterFlagObj; /* -w and objdir != srcdir */ 128 129 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 /* 577 * Parse the given arguments. Called from main() and from 578 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 579 * 580 * The arguments must be treated as read-only and will be freed after the 581 * call. 582 * 583 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 584 */ 585 static void 586 MainParseArgs(int argc, char **argv) 587 { 588 char c; 589 int arginc; 590 char *argvalue; 591 char *optscan; 592 Boolean inOption, dashDash = FALSE; 593 594 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 595 /* Can't actually use getopt(3) because rescanning is not portable */ 596 597 rearg: 598 inOption = FALSE; 599 optscan = NULL; 600 while (argc > 1) { 601 const char *optspec; 602 if (!inOption) 603 optscan = argv[1]; 604 c = *optscan++; 605 arginc = 0; 606 if (inOption) { 607 if (c == '\0') { 608 argv++; 609 argc--; 610 inOption = FALSE; 611 continue; 612 } 613 } else { 614 if (c != '-' || dashDash) 615 break; 616 inOption = TRUE; 617 c = *optscan++; 618 } 619 /* '-' found at some earlier point */ 620 optspec = strchr(optspecs, c); 621 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 622 /* -<something> found, and <something> should have an arg */ 623 inOption = FALSE; 624 arginc = 1; 625 argvalue = optscan; 626 if (*argvalue == '\0') { 627 if (argc < 3) 628 goto noarg; 629 argvalue = argv[2]; 630 arginc = 2; 631 } 632 } else { 633 argvalue = NULL; 634 } 635 switch (c) { 636 case '\0': 637 arginc = 1; 638 inOption = FALSE; 639 break; 640 case '-': 641 dashDash = TRUE; 642 break; 643 default: 644 if (!MainParseArg(c, argvalue)) 645 goto noarg; 646 } 647 argv += arginc; 648 argc -= arginc; 649 } 650 651 /* 652 * See if the rest of the arguments are variable assignments and 653 * perform them if so. Else take them to be targets and stuff them 654 * on the end of the "create" list. 655 */ 656 for (; argc > 1; ++argv, --argc) { 657 VarAssign var; 658 if (Parse_IsVar(argv[1], &var)) { 659 Parse_DoVar(&var, VAR_CMDLINE); 660 } else { 661 if (argv[1][0] == '\0') 662 Punt("illegal (null) argument."); 663 if (argv[1][0] == '-' && !dashDash) 664 goto rearg; 665 Lst_Append(&opts.create, bmake_strdup(argv[1])); 666 } 667 } 668 669 return; 670 noarg: 671 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 672 progname, c); 673 usage(); 674 } 675 676 /* 677 * Break a line of arguments into words and parse them. 678 * 679 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 680 * by main() when reading the MAKEFLAGS environment variable. 681 */ 682 void 683 Main_ParseArgLine(const char *line) 684 { 685 Words words; 686 char *buf; 687 688 if (line == NULL) 689 return; 690 /* XXX: don't use line as an iterator variable */ 691 for (; *line == ' '; ++line) 692 continue; 693 if (line[0] == '\0') 694 return; 695 696 { 697 FStr argv0 = Var_Value(".MAKE", VAR_GLOBAL); 698 buf = str_concat3(argv0.str, " ", line); 699 FStr_Done(&argv0); 700 } 701 702 words = Str_Words(buf, TRUE); 703 if (words.words == NULL) { 704 Error("Unterminated quoted string [%s]", buf); 705 free(buf); 706 return; 707 } 708 free(buf); 709 MainParseArgs((int)words.len, words.words); 710 711 Words_Free(words); 712 } 713 714 Boolean 715 Main_SetObjdir(Boolean writable, const char *fmt, ...) 716 { 717 struct stat sb; 718 char *path; 719 char buf[MAXPATHLEN + 1]; 720 char buf2[MAXPATHLEN + 1]; 721 Boolean rc = FALSE; 722 va_list ap; 723 724 va_start(ap, fmt); 725 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 726 va_end(ap); 727 728 if (path[0] != '/') { 729 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 730 path = buf2; 731 } 732 733 /* look for the directory and try to chdir there */ 734 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 735 if ((writable && access(path, W_OK) != 0) || 736 (chdir(path) != 0)) { 737 (void)fprintf(stderr, "%s warning: %s: %s.\n", 738 progname, path, strerror(errno)); 739 } else { 740 snprintf(objdir, sizeof objdir, "%s", path); 741 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 742 setenv("PWD", objdir, 1); 743 Dir_InitDot(); 744 purge_relative_cached_realpaths(); 745 rc = TRUE; 746 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 747 enterFlagObj = TRUE; 748 } 749 } 750 751 return rc; 752 } 753 754 static Boolean 755 SetVarObjdir(Boolean writable, const char *var, const char *suffix) 756 { 757 FStr path = Var_Value(var, VAR_CMDLINE); 758 FStr xpath; 759 760 if (path.str == NULL || path.str[0] == '\0') { 761 FStr_Done(&path); 762 return FALSE; 763 } 764 765 /* expand variable substitutions */ 766 xpath = FStr_InitRefer(path.str); 767 if (strchr(path.str, '$') != 0) { 768 char *expanded; 769 (void)Var_Subst(path.str, VAR_GLOBAL, VARE_WANTRES, &expanded); 770 /* TODO: handle errors */ 771 xpath = FStr_InitOwn(expanded); 772 } 773 774 (void)Main_SetObjdir(writable, "%s%s", xpath.str, suffix); 775 776 FStr_Done(&xpath); 777 FStr_Done(&path); 778 return TRUE; 779 } 780 781 /* 782 * Splits str into words, adding them to the list. 783 * The string must be kept alive as long as the list. 784 */ 785 int 786 str2Lst_Append(StringList *lp, char *str) 787 { 788 char *cp; 789 int n; 790 791 const char *sep = " \t"; 792 793 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 794 Lst_Append(lp, cp); 795 n++; 796 } 797 return n; 798 } 799 800 #ifdef SIGINFO 801 /*ARGSUSED*/ 802 static void 803 siginfo(int signo MAKE_ATTR_UNUSED) 804 { 805 char dir[MAXPATHLEN]; 806 char str[2 * MAXPATHLEN]; 807 int len; 808 if (getcwd(dir, sizeof dir) == NULL) 809 return; 810 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 811 if (len > 0) 812 (void)write(STDERR_FILENO, str, (size_t)len); 813 } 814 #endif 815 816 /* Allow makefiles some control over the mode we run in. */ 817 static void 818 MakeMode(void) 819 { 820 FStr mode = FStr_InitRefer(NULL); 821 822 if (mode.str == NULL) { 823 char *expanded; 824 (void)Var_Subst("${" MAKE_MODE ":tl}", 825 VAR_GLOBAL, VARE_WANTRES, &expanded); 826 /* TODO: handle errors */ 827 mode = FStr_InitOwn(expanded); 828 } 829 830 if (mode.str[0] != '\0') { 831 if (strstr(mode.str, "compat") != NULL) { 832 opts.compatMake = TRUE; 833 forceJobs = FALSE; 834 } 835 #if USE_META 836 if (strstr(mode.str, "meta") != NULL) 837 meta_mode_init(mode.str); 838 #endif 839 } 840 841 FStr_Done(&mode); 842 } 843 844 static void 845 PrintVar(const char *varname, Boolean expandVars) 846 { 847 if (strchr(varname, '$') != NULL) { 848 char *evalue; 849 (void)Var_Subst(varname, VAR_GLOBAL, VARE_WANTRES, &evalue); 850 /* TODO: handle errors */ 851 printf("%s\n", evalue); 852 bmake_free(evalue); 853 854 } else if (expandVars) { 855 char *expr = str_concat3("${", varname, "}"); 856 char *evalue; 857 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &evalue); 858 /* TODO: handle errors */ 859 free(expr); 860 printf("%s\n", evalue); 861 bmake_free(evalue); 862 863 } else { 864 FStr value = Var_Value(varname, VAR_GLOBAL); 865 printf("%s\n", value.str != NULL ? value.str : ""); 866 FStr_Done(&value); 867 } 868 } 869 870 /* 871 * Return a Boolean based on a variable. 872 * 873 * If the knob is not set, return the fallback. 874 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 875 * is FALSE, otherwise TRUE. 876 */ 877 static Boolean 878 GetBooleanVar(const char *varname, Boolean fallback) 879 { 880 char *expr = str_concat3("${", varname, ":U}"); 881 char *value; 882 Boolean res; 883 884 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 885 /* TODO: handle errors */ 886 res = ParseBoolean(value, fallback); 887 free(value); 888 free(expr); 889 return res; 890 } 891 892 static void 893 doPrintVars(void) 894 { 895 StringListNode *ln; 896 Boolean expandVars; 897 898 if (opts.printVars == PVM_EXPANDED) 899 expandVars = TRUE; 900 else if (opts.debugVflag) 901 expandVars = FALSE; 902 else 903 expandVars = GetBooleanVar(".MAKE.EXPAND_VARIABLES", FALSE); 904 905 for (ln = opts.variables.first; ln != NULL; ln = ln->next) { 906 const char *varname = ln->datum; 907 PrintVar(varname, expandVars); 908 } 909 } 910 911 static Boolean 912 runTargets(void) 913 { 914 GNodeList targs = LST_INIT; /* target nodes to create */ 915 Boolean outOfDate; /* FALSE if all targets up to date */ 916 917 /* 918 * Have now read the entire graph and need to make a list of 919 * targets to create. If none was given on the command line, 920 * we consult the parsing module to find the main target(s) 921 * to create. 922 */ 923 if (Lst_IsEmpty(&opts.create)) 924 Parse_MainName(&targs); 925 else 926 Targ_FindList(&targs, &opts.create); 927 928 if (!opts.compatMake) { 929 /* 930 * Initialize job module before traversing the graph 931 * now that any .BEGIN and .END targets have been read. 932 * This is done only if the -q flag wasn't given 933 * (to prevent the .BEGIN from being executed should 934 * it exist). 935 */ 936 if (!opts.queryFlag) { 937 Job_Init(); 938 jobsRunning = TRUE; 939 } 940 941 /* Traverse the graph, checking on all the targets */ 942 outOfDate = Make_Run(&targs); 943 } else { 944 /* 945 * Compat_Init will take care of creating all the 946 * targets as well as initializing the module. 947 */ 948 Compat_Run(&targs); 949 outOfDate = FALSE; 950 } 951 Lst_Done(&targs); /* Don't free the nodes. */ 952 return outOfDate; 953 } 954 955 /* 956 * Set up the .TARGETS variable to contain the list of targets to be 957 * created. If none specified, make the variable empty -- the parser 958 * will fill the thing in with the default or .MAIN target. 959 */ 960 static void 961 InitVarTargets(void) 962 { 963 StringListNode *ln; 964 965 if (Lst_IsEmpty(&opts.create)) { 966 Var_Set(".TARGETS", "", VAR_GLOBAL); 967 return; 968 } 969 970 for (ln = opts.create.first; ln != NULL; ln = ln->next) { 971 char *name = ln->datum; 972 Var_Append(".TARGETS", name, VAR_GLOBAL); 973 } 974 } 975 976 static void 977 InitRandom(void) 978 { 979 struct timeval tv; 980 981 gettimeofday(&tv, NULL); 982 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 983 } 984 985 static const char * 986 InitVarMachine(const struct utsname *utsname) 987 { 988 const char *machine = getenv("MACHINE"); 989 if (machine != NULL) 990 return machine; 991 992 #if defined(MAKE_NATIVE) 993 return utsname->machine; 994 #elif defined(MAKE_MACHINE) 995 return MAKE_MACHINE; 996 #else 997 return "unknown"; 998 #endif 999 } 1000 1001 static const char * 1002 InitVarMachineArch(void) 1003 { 1004 const char *env = getenv("MACHINE_ARCH"); 1005 if (env != NULL) 1006 return env; 1007 1008 #ifdef MAKE_NATIVE 1009 { 1010 struct utsname utsname; 1011 static char machine_arch_buf[sizeof utsname.machine]; 1012 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1013 size_t len = sizeof machine_arch_buf; 1014 1015 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1016 &len, NULL, 0) < 0) { 1017 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1018 strerror(errno)); 1019 exit(2); 1020 } 1021 1022 return machine_arch_buf; 1023 } 1024 #elif defined(MACHINE_ARCH) 1025 return MACHINE_ARCH; 1026 #elif defined(MAKE_MACHINE_ARCH) 1027 return MAKE_MACHINE_ARCH; 1028 #else 1029 return "unknown"; 1030 #endif 1031 } 1032 1033 #ifndef NO_PWD_OVERRIDE 1034 /* 1035 * All this code is so that we know where we are when we start up 1036 * on a different machine with pmake. 1037 * 1038 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1039 * since the value of curdir can vary depending on how we got 1040 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1041 * or via subdir.mk in which case its likely a shell which does 1042 * not provide it. 1043 * 1044 * So, to stop it breaking this case only, we ignore PWD if 1045 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1046 */ 1047 static void 1048 HandlePWD(const struct stat *curdir_st) 1049 { 1050 char *pwd; 1051 FStr prefix, makeobjdir; 1052 struct stat pwd_st; 1053 1054 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1055 return; 1056 1057 prefix = Var_Value("MAKEOBJDIRPREFIX", VAR_CMDLINE); 1058 if (prefix.str != NULL) { 1059 FStr_Done(&prefix); 1060 return; 1061 } 1062 1063 makeobjdir = Var_Value("MAKEOBJDIR", VAR_CMDLINE); 1064 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL) 1065 goto ignore_pwd; 1066 1067 if (stat(pwd, &pwd_st) == 0 && 1068 curdir_st->st_ino == pwd_st.st_ino && 1069 curdir_st->st_dev == pwd_st.st_dev) 1070 (void)strncpy(curdir, pwd, MAXPATHLEN); 1071 1072 ignore_pwd: 1073 FStr_Done(&makeobjdir); 1074 } 1075 #endif 1076 1077 /* 1078 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1079 * MAKEOBJDIR is set in the environment, try only that value 1080 * and fall back to .CURDIR if it does not exist. 1081 * 1082 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1083 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1084 * of these paths exist, just use .CURDIR. 1085 */ 1086 static void 1087 InitObjdir(const char *machine, const char *machine_arch) 1088 { 1089 Boolean writable; 1090 1091 Dir_InitCur(curdir); 1092 writable = GetBooleanVar("MAKE_OBJDIR_CHECK_WRITABLE", TRUE); 1093 (void)Main_SetObjdir(FALSE, "%s", curdir); 1094 1095 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1096 !SetVarObjdir(writable, "MAKEOBJDIR", "") && 1097 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1098 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1099 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1100 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1101 } 1102 1103 /* get rid of resource limit on file descriptors */ 1104 static void 1105 UnlimitFiles(void) 1106 { 1107 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1108 struct rlimit rl; 1109 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1110 rl.rlim_cur != rl.rlim_max) { 1111 rl.rlim_cur = rl.rlim_max; 1112 (void)setrlimit(RLIMIT_NOFILE, &rl); 1113 } 1114 #endif 1115 } 1116 1117 static void 1118 CmdOpts_Init(void) 1119 { 1120 opts.compatMake = FALSE; 1121 opts.debug = DEBUG_NONE; 1122 /* opts.debug_file has been initialized earlier */ 1123 opts.strict = FALSE; 1124 opts.debugVflag = FALSE; 1125 opts.checkEnvFirst = FALSE; 1126 Lst_Init(&opts.makefiles); 1127 opts.ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1128 opts.maxJobs = 1; 1129 opts.keepgoing = FALSE; /* Stop on error */ 1130 opts.noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1131 opts.noExecute = FALSE; /* Execute all commands */ 1132 opts.queryFlag = FALSE; 1133 opts.noBuiltins = FALSE; /* Read the built-in rules */ 1134 opts.beSilent = FALSE; /* Print commands as executed */ 1135 opts.touchFlag = FALSE; 1136 opts.printVars = PVM_NONE; 1137 Lst_Init(&opts.variables); 1138 opts.parseWarnFatal = FALSE; 1139 opts.enterFlag = FALSE; 1140 opts.varNoExportEnv = FALSE; 1141 Lst_Init(&opts.create); 1142 } 1143 1144 /* 1145 * Initialize MAKE and .MAKE to the path of the executable, so that it can be 1146 * found by execvp(3) and the shells, even after a chdir. 1147 * 1148 * If it's a relative path and contains a '/', resolve it to an absolute path. 1149 * Otherwise keep it as is, assuming it will be found in the PATH. 1150 */ 1151 static void 1152 InitVarMake(const char *argv0) 1153 { 1154 const char *make = argv0; 1155 1156 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1157 char pathbuf[MAXPATHLEN]; 1158 const char *abspath = cached_realpath(argv0, pathbuf); 1159 struct stat st; 1160 if (abspath != NULL && abspath[0] == '/' && 1161 stat(make, &st) == 0) 1162 make = abspath; 1163 } 1164 1165 Var_Set("MAKE", make, VAR_GLOBAL); 1166 Var_Set(".MAKE", make, VAR_GLOBAL); 1167 } 1168 1169 /* 1170 * Add the directories from the colon-separated syspath to defSysIncPath. 1171 * After returning, the contents of syspath is unspecified. 1172 */ 1173 static void 1174 InitDefSysIncPath(char *syspath) 1175 { 1176 static char defsyspath[] = _PATH_DEFSYSPATH; 1177 char *start, *cp; 1178 1179 /* 1180 * If no user-supplied system path was given (through the -m option) 1181 * add the directories from the DEFSYSPATH (more than one may be given 1182 * as dir1:...:dirn) to the system include path. 1183 */ 1184 if (syspath == NULL || syspath[0] == '\0') 1185 syspath = defsyspath; 1186 else 1187 syspath = bmake_strdup(syspath); 1188 1189 for (start = syspath; *start != '\0'; start = cp) { 1190 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1191 continue; 1192 if (*cp == ':') 1193 *cp++ = '\0'; 1194 1195 /* look for magic parent directory search string */ 1196 if (strncmp(start, ".../", 4) == 0) { 1197 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1198 if (dir != NULL) { 1199 (void)Dir_AddDir(defSysIncPath, dir); 1200 free(dir); 1201 } 1202 } else { 1203 (void)Dir_AddDir(defSysIncPath, start); 1204 } 1205 } 1206 1207 if (syspath != defsyspath) 1208 free(syspath); 1209 } 1210 1211 static void 1212 ReadBuiltinRules(void) 1213 { 1214 StringListNode *ln; 1215 StringList sysMkPath = LST_INIT; 1216 1217 Dir_Expand(_PATH_DEFSYSMK, 1218 Lst_IsEmpty(sysIncPath) ? defSysIncPath : sysIncPath, 1219 &sysMkPath); 1220 if (Lst_IsEmpty(&sysMkPath)) 1221 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1222 1223 for (ln = sysMkPath.first; ln != NULL; ln = ln->next) 1224 if (ReadMakefile(ln->datum) == 0) 1225 break; 1226 1227 if (ln == NULL) 1228 Fatal("%s: cannot open %s.", 1229 progname, (const char *)sysMkPath.first->datum); 1230 1231 /* Free the list but not the actual filenames since these may still 1232 * be used in GNodes. */ 1233 Lst_Done(&sysMkPath); 1234 } 1235 1236 static void 1237 InitMaxJobs(void) 1238 { 1239 char *value; 1240 int n; 1241 1242 if (forceJobs || opts.compatMake || 1243 !Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) 1244 return; 1245 1246 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1247 /* TODO: handle errors */ 1248 n = (int)strtol(value, NULL, 0); 1249 if (n < 1) { 1250 (void)fprintf(stderr, 1251 "%s: illegal value for .MAKE.JOBS " 1252 "-- must be positive integer!\n", 1253 progname); 1254 exit(2); /* Not 1 so -q can distinguish error */ 1255 } 1256 1257 if (n != opts.maxJobs) { 1258 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1259 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1260 } 1261 1262 opts.maxJobs = n; 1263 maxJobTokens = opts.maxJobs; 1264 forceJobs = TRUE; 1265 free(value); 1266 } 1267 1268 /* 1269 * For compatibility, look at the directories in the VPATH variable 1270 * and add them to the search path, if the variable is defined. The 1271 * variable's value is in the same format as the PATH environment 1272 * variable, i.e. <directory>:<directory>:<directory>... 1273 */ 1274 static void 1275 InitVpath(void) 1276 { 1277 char *vpath, savec, *path; 1278 if (!Var_Exists("VPATH", VAR_CMDLINE)) 1279 return; 1280 1281 (void)Var_Subst("${VPATH}", VAR_CMDLINE, VARE_WANTRES, &vpath); 1282 /* TODO: handle errors */ 1283 path = vpath; 1284 do { 1285 char *cp; 1286 /* skip to end of directory */ 1287 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1288 continue; 1289 /* Save terminator character so know when to stop */ 1290 savec = *cp; 1291 *cp = '\0'; 1292 /* Add directory to search path */ 1293 (void)Dir_AddDir(&dirSearchPath, path); 1294 *cp = savec; 1295 path = cp + 1; 1296 } while (savec == ':'); 1297 free(vpath); 1298 } 1299 1300 static void 1301 ReadAllMakefiles(StringList *makefiles) 1302 { 1303 StringListNode *ln; 1304 1305 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1306 const char *fname = ln->datum; 1307 if (ReadMakefile(fname) != 0) 1308 Fatal("%s: cannot open %s.", progname, fname); 1309 } 1310 } 1311 1312 static void 1313 ReadFirstDefaultMakefile(void) 1314 { 1315 StringListNode *ln; 1316 char *prefs; 1317 1318 (void)Var_Subst("${" MAKE_MAKEFILE_PREFERENCE "}", 1319 VAR_CMDLINE, VARE_WANTRES, &prefs); 1320 /* TODO: handle errors */ 1321 1322 /* XXX: This should use a local list instead of opts.makefiles 1323 * since these makefiles do not come from the command line. They 1324 * also have different semantics in that only the first file that 1325 * is found is processed. See ReadAllMakefiles. */ 1326 (void)str2Lst_Append(&opts.makefiles, prefs); 1327 1328 for (ln = opts.makefiles.first; ln != NULL; ln = ln->next) 1329 if (ReadMakefile(ln->datum) == 0) 1330 break; 1331 1332 free(prefs); 1333 } 1334 1335 /* 1336 * Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1337 * Initialize a few modules. 1338 * Parse the arguments from MAKEFLAGS and the command line. 1339 */ 1340 static void 1341 main_Init(int argc, char **argv) 1342 { 1343 struct stat sa; 1344 const char *machine; 1345 const char *machine_arch; 1346 char *syspath = getenv("MAKESYSPATH"); 1347 struct utsname utsname; 1348 1349 /* default to writing debug to stderr */ 1350 opts.debug_file = stderr; 1351 1352 HashTable_Init(&cached_realpaths); 1353 1354 #ifdef SIGINFO 1355 (void)bmake_signal(SIGINFO, siginfo); 1356 #endif 1357 1358 InitRandom(); 1359 1360 progname = str_basename(argv[0]); 1361 1362 UnlimitFiles(); 1363 1364 if (uname(&utsname) == -1) { 1365 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1366 strerror(errno)); 1367 exit(2); 1368 } 1369 1370 /* 1371 * Get the name of this type of MACHINE from utsname 1372 * so we can share an executable for similar machines. 1373 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1374 * 1375 * Note that both MACHINE and MACHINE_ARCH are decided at 1376 * run-time. 1377 */ 1378 machine = InitVarMachine(&utsname); 1379 machine_arch = InitVarMachineArch(); 1380 1381 myPid = getpid(); /* remember this for vFork() */ 1382 1383 /* 1384 * Just in case MAKEOBJDIR wants us to do something tricky. 1385 */ 1386 Targ_Init(); 1387 Var_Init(); 1388 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1389 Var_Set("MACHINE", machine, VAR_GLOBAL); 1390 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1391 #ifdef MAKE_VERSION 1392 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1393 #endif 1394 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1395 /* 1396 * This is the traditional preference for makefiles. 1397 */ 1398 #ifndef MAKEFILE_PREFERENCE_LIST 1399 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1400 #endif 1401 Var_Set(MAKE_MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, VAR_GLOBAL); 1402 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1403 1404 CmdOpts_Init(); 1405 allPrecious = FALSE; /* Remove targets when interrupted */ 1406 deleteOnError = FALSE; /* Historical default behavior */ 1407 jobsRunning = FALSE; 1408 1409 maxJobTokens = opts.maxJobs; 1410 ignorePWD = FALSE; 1411 1412 /* 1413 * Initialize the parsing, directory and variable modules to prepare 1414 * for the reading of inclusion paths and variable settings on the 1415 * command line 1416 */ 1417 1418 /* 1419 * Initialize various variables. 1420 * MAKE also gets this name, for compatibility 1421 * .MAKEFLAGS gets set to the empty string just in case. 1422 * MFLAGS also gets initialized empty, for compatibility. 1423 */ 1424 Parse_Init(); 1425 InitVarMake(argv[0]); 1426 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1427 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1428 Var_Set("MFLAGS", "", VAR_GLOBAL); 1429 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1430 /* some makefiles need to know this */ 1431 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMDLINE); 1432 1433 /* Set some other useful variables. */ 1434 { 1435 char tmp[64], *ep = getenv(MAKE_LEVEL_ENV); 1436 1437 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1438 if (makelevel < 0) 1439 makelevel = 0; 1440 snprintf(tmp, sizeof tmp, "%d", makelevel); 1441 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1442 snprintf(tmp, sizeof tmp, "%u", myPid); 1443 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1444 snprintf(tmp, sizeof tmp, "%u", getppid()); 1445 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1446 snprintf(tmp, sizeof tmp, "%u", getuid()); 1447 Var_Set(".MAKE.UID", tmp, VAR_GLOBAL); 1448 snprintf(tmp, sizeof tmp, "%u", getgid()); 1449 Var_Set(".MAKE.GID", tmp, VAR_GLOBAL); 1450 } 1451 if (makelevel > 0) { 1452 char pn[1024]; 1453 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1454 progname = bmake_strdup(pn); 1455 } 1456 1457 #ifdef USE_META 1458 meta_init(); 1459 #endif 1460 Dir_Init(); 1461 1462 /* 1463 * First snag any flags out of the MAKE environment variable. 1464 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1465 * in a different format). 1466 */ 1467 #ifdef POSIX 1468 { 1469 char *p1 = explode(getenv("MAKEFLAGS")); 1470 Main_ParseArgLine(p1); 1471 free(p1); 1472 } 1473 #else 1474 Main_ParseArgLine(getenv("MAKE")); 1475 #endif 1476 1477 /* 1478 * Find where we are (now). 1479 * We take care of PWD for the automounter below... 1480 */ 1481 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1482 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1483 progname, strerror(errno)); 1484 exit(2); 1485 } 1486 1487 MainParseArgs(argc, argv); 1488 1489 if (opts.enterFlag) 1490 printf("%s: Entering directory `%s'\n", progname, curdir); 1491 1492 /* 1493 * Verify that cwd is sane. 1494 */ 1495 if (stat(curdir, &sa) == -1) { 1496 (void)fprintf(stderr, "%s: %s: %s.\n", 1497 progname, curdir, strerror(errno)); 1498 exit(2); 1499 } 1500 1501 #ifndef NO_PWD_OVERRIDE 1502 HandlePWD(&sa); 1503 #endif 1504 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1505 1506 InitObjdir(machine, machine_arch); 1507 1508 /* 1509 * Initialize archive, target and suffix modules in preparation for 1510 * parsing the makefile(s) 1511 */ 1512 Arch_Init(); 1513 Suff_Init(); 1514 Trace_Init(tracefile); 1515 1516 defaultNode = NULL; 1517 (void)time(&now); 1518 1519 Trace_Log(MAKESTART, NULL); 1520 1521 InitVarTargets(); 1522 1523 InitDefSysIncPath(syspath); 1524 } 1525 1526 /* 1527 * Read the system makefile followed by either makefile, Makefile or the 1528 * files given by the -f option. Exit on parse errors. 1529 */ 1530 static void 1531 main_ReadFiles(void) 1532 { 1533 1534 if (!opts.noBuiltins) 1535 ReadBuiltinRules(); 1536 1537 if (!Lst_IsEmpty(&opts.makefiles)) 1538 ReadAllMakefiles(&opts.makefiles); 1539 else 1540 ReadFirstDefaultMakefile(); 1541 } 1542 1543 /* Compute the dependency graph. */ 1544 static void 1545 main_PrepareMaking(void) 1546 { 1547 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1548 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1549 (void)Var_Subst("${.MAKE.DEPENDFILE}", 1550 VAR_CMDLINE, VARE_WANTRES, &makeDependfile); 1551 if (makeDependfile[0] != '\0') { 1552 /* TODO: handle errors */ 1553 doing_depend = TRUE; 1554 (void)ReadMakefile(makeDependfile); 1555 doing_depend = FALSE; 1556 } 1557 } 1558 1559 if (enterFlagObj) 1560 printf("%s: Entering directory `%s'\n", progname, objdir); 1561 1562 MakeMode(); 1563 1564 { 1565 FStr makeflags = Var_Value(MAKEFLAGS, VAR_GLOBAL); 1566 Var_Append("MFLAGS", makeflags.str, VAR_GLOBAL); 1567 FStr_Done(&makeflags); 1568 } 1569 1570 InitMaxJobs(); 1571 1572 /* 1573 * Be compatible if the user did not specify -j and did not explicitly 1574 * turn compatibility on. 1575 */ 1576 if (!opts.compatMake && !forceJobs) 1577 opts.compatMake = TRUE; 1578 1579 if (!opts.compatMake) 1580 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1581 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1582 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1583 1584 if (opts.printVars == PVM_NONE) 1585 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1586 1587 InitVpath(); 1588 1589 /* 1590 * Now that all search paths have been read for suffixes et al, it's 1591 * time to add the default search path to their lists... 1592 */ 1593 Suff_DoPaths(); 1594 1595 /* 1596 * Propagate attributes through :: dependency lists. 1597 */ 1598 Targ_Propagate(); 1599 1600 /* print the initial graph, if the user requested it */ 1601 if (DEBUG(GRAPH1)) 1602 Targ_PrintGraph(1); 1603 } 1604 1605 /* 1606 * Make the targets. 1607 * If the -v or -V options are given, print variables instead. 1608 * Return whether any of the targets is out-of-date. 1609 */ 1610 static Boolean 1611 main_Run(void) 1612 { 1613 if (opts.printVars != PVM_NONE) { 1614 /* print the values of any variables requested by the user */ 1615 doPrintVars(); 1616 return FALSE; 1617 } else { 1618 return runTargets(); 1619 } 1620 } 1621 1622 /* Clean up after making the targets. */ 1623 static void 1624 main_CleanUp(void) 1625 { 1626 #ifdef CLEANUP 1627 Lst_DoneCall(&opts.variables, free); 1628 /* 1629 * Don't free the actual strings from opts.makefiles, they may be 1630 * used in GNodes. 1631 */ 1632 Lst_Done(&opts.makefiles); 1633 Lst_DoneCall(&opts.create, free); 1634 #endif 1635 1636 /* print the graph now it's been processed if the user requested it */ 1637 if (DEBUG(GRAPH2)) 1638 Targ_PrintGraph(2); 1639 1640 Trace_Log(MAKEEND, NULL); 1641 1642 if (enterFlagObj) 1643 printf("%s: Leaving directory `%s'\n", progname, objdir); 1644 if (opts.enterFlag) 1645 printf("%s: Leaving directory `%s'\n", progname, curdir); 1646 1647 #ifdef USE_META 1648 meta_finish(); 1649 #endif 1650 Suff_End(); 1651 Targ_End(); 1652 Arch_End(); 1653 Var_End(); 1654 Parse_End(); 1655 Dir_End(); 1656 Job_End(); 1657 Trace_End(); 1658 } 1659 1660 /* Determine the exit code. */ 1661 static int 1662 main_Exit(Boolean outOfDate) 1663 { 1664 if (opts.strict && (main_errors > 0 || Parse_GetFatals() > 0)) 1665 return 2; /* Not 1 so -q can distinguish error */ 1666 return outOfDate ? 1 : 0; 1667 } 1668 1669 int 1670 main(int argc, char **argv) 1671 { 1672 Boolean outOfDate; 1673 1674 main_Init(argc, argv); 1675 main_ReadFiles(); 1676 main_PrepareMaking(); 1677 outOfDate = main_Run(); 1678 main_CleanUp(); 1679 return main_Exit(outOfDate); 1680 } 1681 1682 /* 1683 * Open and parse the given makefile, with all its side effects. 1684 * 1685 * Results: 1686 * 0 if ok. -1 if couldn't open file. 1687 */ 1688 static int 1689 ReadMakefile(const char *fname) 1690 { 1691 int fd; 1692 char *name, *path = NULL; 1693 1694 if (strcmp(fname, "-") == 0) { 1695 Parse_File(NULL /*stdin*/, -1); 1696 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1697 } else { 1698 /* if we've chdir'd, rebuild the path name */ 1699 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1700 path = str_concat3(curdir, "/", fname); 1701 fd = open(path, O_RDONLY); 1702 if (fd != -1) { 1703 fname = path; 1704 goto found; 1705 } 1706 free(path); 1707 1708 /* If curdir failed, try objdir (ala .depend) */ 1709 path = str_concat3(objdir, "/", fname); 1710 fd = open(path, O_RDONLY); 1711 if (fd != -1) { 1712 fname = path; 1713 goto found; 1714 } 1715 } else { 1716 fd = open(fname, O_RDONLY); 1717 if (fd != -1) 1718 goto found; 1719 } 1720 /* look in -I and system include directories. */ 1721 name = Dir_FindFile(fname, parseIncPath); 1722 if (name == NULL) { 1723 SearchPath *sysInc = Lst_IsEmpty(sysIncPath) 1724 ? defSysIncPath : sysIncPath; 1725 name = Dir_FindFile(fname, sysInc); 1726 } 1727 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1728 free(name); 1729 free(path); 1730 return -1; 1731 } 1732 fname = name; 1733 /* 1734 * set the MAKEFILE variable desired by System V fans -- the 1735 * placement of the setting here means it gets set to the last 1736 * makefile specified, as it is set by SysV make. 1737 */ 1738 found: 1739 if (!doing_depend) 1740 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1741 Parse_File(fname, fd); 1742 } 1743 free(path); 1744 return 0; 1745 } 1746 1747 /*- 1748 * Cmd_Exec -- 1749 * Execute the command in cmd, and return the output of that command 1750 * in a string. In the output, newlines are replaced with spaces. 1751 * 1752 * Results: 1753 * A string containing the output of the command, or the empty string. 1754 * *errfmt returns a format string describing the command failure, 1755 * if any, using a single %s conversion specification. 1756 * 1757 * Side Effects: 1758 * The string must be freed by the caller. 1759 */ 1760 char * 1761 Cmd_Exec(const char *cmd, const char **errfmt) 1762 { 1763 const char *args[4]; /* Args for invoking the shell */ 1764 int pipefds[2]; 1765 int cpid; /* Child PID */ 1766 int pid; /* PID from wait() */ 1767 int status; /* command exit status */ 1768 Buffer buf; /* buffer to store the result */ 1769 ssize_t bytes_read; 1770 char *res; /* result */ 1771 size_t res_len; 1772 char *cp; 1773 int savederr; /* saved errno */ 1774 1775 *errfmt = NULL; 1776 1777 if (!shellName) 1778 Shell_Init(); 1779 /* 1780 * Set up arguments for shell 1781 */ 1782 args[0] = shellName; 1783 args[1] = "-c"; 1784 args[2] = cmd; 1785 args[3] = NULL; 1786 1787 /* 1788 * Open a pipe for fetching its output 1789 */ 1790 if (pipe(pipefds) == -1) { 1791 *errfmt = "Couldn't create pipe for \"%s\""; 1792 goto bad; 1793 } 1794 1795 Var_ReexportVars(); 1796 1797 /* 1798 * Fork 1799 */ 1800 switch (cpid = vFork()) { 1801 case 0: 1802 (void)close(pipefds[0]); /* Close input side of pipe */ 1803 1804 /* 1805 * Duplicate the output stream to the shell's output, then 1806 * shut the extra thing down. Note we don't fetch the error 1807 * stream...why not? Why? 1808 */ 1809 (void)dup2(pipefds[1], 1); 1810 (void)close(pipefds[1]); 1811 1812 (void)execv(shellPath, UNCONST(args)); 1813 _exit(1); 1814 /*NOTREACHED*/ 1815 1816 case -1: 1817 *errfmt = "Couldn't exec \"%s\""; 1818 goto bad; 1819 1820 default: 1821 (void)close(pipefds[1]); /* No need for the writing half */ 1822 1823 savederr = 0; 1824 Buf_Init(&buf); 1825 1826 do { 1827 char result[BUFSIZ]; 1828 bytes_read = read(pipefds[0], result, sizeof result); 1829 if (bytes_read > 0) 1830 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1831 } while (bytes_read > 0 || 1832 (bytes_read == -1 && errno == EINTR)); 1833 if (bytes_read == -1) 1834 savederr = errno; 1835 1836 (void)close(pipefds[0]); /* Close the input side of the pipe. */ 1837 1838 /* Wait for the process to exit. */ 1839 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1840 JobReapChild(pid, status, FALSE); 1841 1842 res_len = Buf_Len(&buf); 1843 res = Buf_Destroy(&buf, FALSE); 1844 1845 if (savederr != 0) 1846 *errfmt = "Couldn't read shell's output for \"%s\""; 1847 1848 if (WIFSIGNALED(status)) 1849 *errfmt = "\"%s\" exited on a signal"; 1850 else if (WEXITSTATUS(status) != 0) 1851 *errfmt = "\"%s\" returned non-zero status"; 1852 1853 /* Convert newlines to spaces. A final newline is just stripped */ 1854 if (res_len > 0 && res[res_len - 1] == '\n') 1855 res[res_len - 1] = '\0'; 1856 for (cp = res; *cp != '\0'; cp++) 1857 if (*cp == '\n') 1858 *cp = ' '; 1859 break; 1860 } 1861 return res; 1862 bad: 1863 return bmake_strdup(""); 1864 } 1865 1866 /* 1867 * Print a printf-style error message. 1868 * 1869 * In default mode, this error message has no consequences, in particular it 1870 * does not affect the exit status. Only in lint mode (-dL) it does. 1871 */ 1872 void 1873 Error(const char *fmt, ...) 1874 { 1875 va_list ap; 1876 FILE *err_file; 1877 1878 err_file = opts.debug_file; 1879 if (err_file == stdout) 1880 err_file = stderr; 1881 (void)fflush(stdout); 1882 for (;;) { 1883 va_start(ap, fmt); 1884 fprintf(err_file, "%s: ", progname); 1885 (void)vfprintf(err_file, fmt, ap); 1886 va_end(ap); 1887 (void)fprintf(err_file, "\n"); 1888 (void)fflush(err_file); 1889 if (err_file == stderr) 1890 break; 1891 err_file = stderr; 1892 } 1893 main_errors++; 1894 } 1895 1896 /* 1897 * Wait for any running jobs to finish, then produce an error message, 1898 * finally exit immediately. 1899 * 1900 * Exiting immediately differs from Parse_Error, which exits only after the 1901 * current top-level makefile has been parsed completely. 1902 */ 1903 void 1904 Fatal(const char *fmt, ...) 1905 { 1906 va_list ap; 1907 1908 if (jobsRunning) 1909 Job_Wait(); 1910 1911 (void)fflush(stdout); 1912 va_start(ap, fmt); 1913 (void)vfprintf(stderr, fmt, ap); 1914 va_end(ap); 1915 (void)fprintf(stderr, "\n"); 1916 (void)fflush(stderr); 1917 1918 PrintOnError(NULL, NULL); 1919 1920 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1921 Targ_PrintGraph(2); 1922 Trace_Log(MAKEERROR, NULL); 1923 exit(2); /* Not 1 so -q can distinguish error */ 1924 } 1925 1926 /* 1927 * Major exception once jobs are being created. 1928 * Kills all jobs, prints a message and exits. 1929 */ 1930 void 1931 Punt(const char *fmt, ...) 1932 { 1933 va_list ap; 1934 1935 va_start(ap, fmt); 1936 (void)fflush(stdout); 1937 (void)fprintf(stderr, "%s: ", progname); 1938 (void)vfprintf(stderr, fmt, ap); 1939 va_end(ap); 1940 (void)fprintf(stderr, "\n"); 1941 (void)fflush(stderr); 1942 1943 PrintOnError(NULL, NULL); 1944 1945 DieHorribly(); 1946 } 1947 1948 /* Exit without giving a message. */ 1949 void 1950 DieHorribly(void) 1951 { 1952 if (jobsRunning) 1953 Job_AbortAll(); 1954 if (DEBUG(GRAPH2)) 1955 Targ_PrintGraph(2); 1956 Trace_Log(MAKEERROR, NULL); 1957 exit(2); /* Not 1 so -q can distinguish error */ 1958 } 1959 1960 /* 1961 * Called when aborting due to errors in child shell to signal abnormal exit. 1962 * The program exits. 1963 * Errors is the number of errors encountered in Make_Make. 1964 */ 1965 void 1966 Finish(int errs) 1967 { 1968 if (shouldDieQuietly(NULL, -1)) 1969 exit(2); 1970 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1971 } 1972 1973 /* 1974 * eunlink -- 1975 * Remove a file carefully, avoiding directories. 1976 */ 1977 int 1978 eunlink(const char *file) 1979 { 1980 struct stat st; 1981 1982 if (lstat(file, &st) == -1) 1983 return -1; 1984 1985 if (S_ISDIR(st.st_mode)) { 1986 errno = EISDIR; 1987 return -1; 1988 } 1989 return unlink(file); 1990 } 1991 1992 static void 1993 write_all(int fd, const void *data, size_t n) 1994 { 1995 const char *mem = data; 1996 1997 while (n > 0) { 1998 ssize_t written = write(fd, mem, n); 1999 if (written == -1 && errno == EAGAIN) 2000 continue; 2001 if (written == -1) 2002 break; 2003 mem += written; 2004 n -= (size_t)written; 2005 } 2006 } 2007 2008 /* 2009 * execDie -- 2010 * Print why exec failed, avoiding stdio. 2011 */ 2012 void MAKE_ATTR_DEAD 2013 execDie(const char *af, const char *av) 2014 { 2015 Buffer buf; 2016 2017 Buf_Init(&buf); 2018 Buf_AddStr(&buf, progname); 2019 Buf_AddStr(&buf, ": "); 2020 Buf_AddStr(&buf, af); 2021 Buf_AddStr(&buf, "("); 2022 Buf_AddStr(&buf, av); 2023 Buf_AddStr(&buf, ") failed ("); 2024 Buf_AddStr(&buf, strerror(errno)); 2025 Buf_AddStr(&buf, ")\n"); 2026 2027 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 2028 2029 Buf_Destroy(&buf, TRUE); 2030 _exit(1); 2031 } 2032 2033 /* purge any relative paths */ 2034 static void 2035 purge_relative_cached_realpaths(void) 2036 { 2037 HashEntry *he, *nhe; 2038 HashIter hi; 2039 2040 HashIter_Init(&hi, &cached_realpaths); 2041 he = HashIter_Next(&hi); 2042 while (he != NULL) { 2043 nhe = HashIter_Next(&hi); 2044 if (he->key[0] != '/') { 2045 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key); 2046 HashTable_DeleteEntry(&cached_realpaths, he); 2047 /* XXX: What about the allocated he->value? Either 2048 * free them or document why they cannot be freed. */ 2049 } 2050 he = nhe; 2051 } 2052 } 2053 2054 char * 2055 cached_realpath(const char *pathname, char *resolved) 2056 { 2057 const char *rp; 2058 2059 if (pathname == NULL || pathname[0] == '\0') 2060 return NULL; 2061 2062 rp = HashTable_FindValue(&cached_realpaths, pathname); 2063 if (rp != NULL) { 2064 /* a hit */ 2065 strncpy(resolved, rp, MAXPATHLEN); 2066 resolved[MAXPATHLEN - 1] = '\0'; 2067 return resolved; 2068 } 2069 2070 rp = realpath(pathname, resolved); 2071 if (rp != NULL) { 2072 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp)); 2073 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp); 2074 return resolved; 2075 } 2076 2077 /* should we negative-cache? */ 2078 return NULL; 2079 } 2080 2081 /* 2082 * Return true if we should die without noise. 2083 * For example our failing child was a sub-make or failure happened elsewhere. 2084 */ 2085 Boolean 2086 shouldDieQuietly(GNode *gn, int bf) 2087 { 2088 static int quietly = -1; 2089 2090 if (quietly < 0) { 2091 if (DEBUG(JOB) || !GetBooleanVar(".MAKE.DIE_QUIETLY", TRUE)) 2092 quietly = 0; 2093 else if (bf >= 0) 2094 quietly = bf; 2095 else 2096 quietly = gn != NULL && (gn->type & OP_MAKE); 2097 } 2098 return quietly; 2099 } 2100 2101 static void 2102 SetErrorVars(GNode *gn) 2103 { 2104 StringListNode *ln; 2105 2106 /* 2107 * We can print this even if there is no .ERROR target. 2108 */ 2109 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2110 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2111 2112 for (ln = gn->commands.first; ln != NULL; ln = ln->next) { 2113 const char *cmd = ln->datum; 2114 2115 if (cmd == NULL) 2116 break; 2117 Var_Append(".ERROR_CMD", cmd, VAR_GLOBAL); 2118 } 2119 } 2120 2121 /* 2122 * Print some helpful information in case of an error. 2123 * The caller should exit soon after calling this function. 2124 */ 2125 void 2126 PrintOnError(GNode *gn, const char *msg) 2127 { 2128 static GNode *errorNode = NULL; 2129 2130 if (DEBUG(HASH)) { 2131 Targ_Stats(); 2132 Var_Stats(); 2133 } 2134 2135 /* we generally want to keep quiet if a sub-make died */ 2136 if (shouldDieQuietly(gn, -1)) 2137 return; 2138 2139 if (msg != NULL) 2140 printf("%s", msg); 2141 printf("\n%s: stopped in %s\n", progname, curdir); 2142 2143 if (errorNode != NULL) 2144 return; /* we've been here! */ 2145 2146 if (gn != NULL) 2147 SetErrorVars(gn); 2148 2149 { 2150 char *errorVarsValues; 2151 (void)Var_Subst("${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2152 VAR_GLOBAL, VARE_WANTRES, &errorVarsValues); 2153 /* TODO: handle errors */ 2154 printf("%s", errorVarsValues); 2155 free(errorVarsValues); 2156 } 2157 2158 fflush(stdout); 2159 2160 /* 2161 * Finally, see if there is a .ERROR target, and run it if so. 2162 */ 2163 errorNode = Targ_FindNode(".ERROR"); 2164 if (errorNode != NULL) { 2165 errorNode->type |= OP_SPECIAL; 2166 Compat_Make(errorNode, errorNode); 2167 } 2168 } 2169 2170 void 2171 Main_ExportMAKEFLAGS(Boolean first) 2172 { 2173 static Boolean once = TRUE; 2174 const char *expr; 2175 char *s; 2176 2177 if (once != first) 2178 return; 2179 once = FALSE; 2180 2181 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2182 (void)Var_Subst(expr, VAR_CMDLINE, VARE_WANTRES, &s); 2183 /* TODO: handle errors */ 2184 if (s[0] != '\0') { 2185 #ifdef POSIX 2186 setenv("MAKEFLAGS", s, 1); 2187 #else 2188 setenv("MAKE", s, 1); 2189 #endif 2190 } 2191 } 2192 2193 char * 2194 getTmpdir(void) 2195 { 2196 static char *tmpdir = NULL; 2197 struct stat st; 2198 2199 if (tmpdir != NULL) 2200 return tmpdir; 2201 2202 /* Honor $TMPDIR but only if it is valid. Ensure it ends with '/'. */ 2203 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", 2204 VAR_GLOBAL, VARE_WANTRES, &tmpdir); 2205 /* TODO: handle errors */ 2206 2207 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2208 free(tmpdir); 2209 tmpdir = bmake_strdup(_PATH_TMP); 2210 } 2211 return tmpdir; 2212 } 2213 2214 /* 2215 * Create and open a temp file using "pattern". 2216 * If out_fname is provided, set it to a copy of the filename created. 2217 * Otherwise unlink the file once open. 2218 */ 2219 int 2220 mkTempFile(const char *pattern, char **out_fname) 2221 { 2222 static char *tmpdir = NULL; 2223 char tfile[MAXPATHLEN]; 2224 int fd; 2225 2226 if (pattern == NULL) 2227 pattern = TMPPAT; 2228 if (tmpdir == NULL) 2229 tmpdir = getTmpdir(); 2230 if (pattern[0] == '/') { 2231 snprintf(tfile, sizeof tfile, "%s", pattern); 2232 } else { 2233 snprintf(tfile, sizeof tfile, "%s%s", tmpdir, pattern); 2234 } 2235 if ((fd = mkstemp(tfile)) < 0) 2236 Punt("Could not create temporary file %s: %s", tfile, 2237 strerror(errno)); 2238 if (out_fname != NULL) { 2239 *out_fname = bmake_strdup(tfile); 2240 } else { 2241 unlink(tfile); /* we just want the descriptor */ 2242 } 2243 return fd; 2244 } 2245 2246 /* 2247 * Convert a string representation of a boolean into a boolean value. 2248 * Anything that looks like "No", "False", "Off", "0" etc. is FALSE, 2249 * the empty string is the fallback, everything else is TRUE. 2250 */ 2251 Boolean 2252 ParseBoolean(const char *s, Boolean fallback) 2253 { 2254 char ch = ch_tolower(s[0]); 2255 if (ch == '\0') 2256 return fallback; 2257 if (ch == '0' || ch == 'f' || ch == 'n') 2258 return FALSE; 2259 if (ch == 'o') 2260 return ch_tolower(s[1]) != 'f'; 2261 return TRUE; 2262 } 2263
Indexes created Mon Sep 22 13:09:51 GMT 2025