main.c revision 1.443
1 /* $NetBSD: main.c,v 1.443 2020/11/08 02:56:43 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 1.443 2020/11/08 02:56:43 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 #ifndef DEFMAXLOCAL 120 #define DEFMAXLOCAL DEFMAXJOBS 121 #endif 122 123 CmdOpts opts; 124 time_t now; /* Time at start of make */ 125 GNode *DEFAULT; /* .DEFAULT node */ 126 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 127 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 128 129 static int maxJobTokens; /* -j argument */ 130 Boolean enterFlagObj; /* -w and objdir != srcdir */ 131 132 Boolean preserveUndefined; 133 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 134 Boolean doing_depend; /* Set while reading .depend */ 135 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 136 static const char * tracefile; 137 static int ReadMakefile(const char *); 138 static void usage(void) MAKE_ATTR_DEAD; 139 static void purge_cached_realpaths(void); 140 141 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 142 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 143 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 144 char *progname; /* the program name */ 145 char *makeDependfile; 146 pid_t myPid; 147 int makelevel; 148 149 Boolean forceJobs = FALSE; 150 static int errors = 0; 151 152 /* 153 * For compatibility with the POSIX version of MAKEFLAGS that includes 154 * all the options without '-', convert 'flags' to '-f -l -a -g -s'. 155 */ 156 static char * 157 explode(const char *flags) 158 { 159 size_t len; 160 char *nf, *st; 161 const char *f; 162 163 if (flags == NULL) 164 return NULL; 165 166 for (f = flags; *f; f++) 167 if (!ch_isalpha(*f)) 168 break; 169 170 if (*f) 171 return bmake_strdup(flags); 172 173 len = strlen(flags); 174 st = nf = bmake_malloc(len * 3 + 1); 175 while (*flags) { 176 *nf++ = '-'; 177 *nf++ = *flags++; 178 *nf++ = ' '; 179 } 180 *nf = '\0'; 181 return st; 182 } 183 184 static void 185 parse_debug_option_F(const char *modules) 186 { 187 const char *mode; 188 size_t len; 189 char *fname; 190 191 if (opts.debug_file != stdout && opts.debug_file != stderr) 192 fclose(opts.debug_file); 193 194 if (*modules == '+') { 195 modules++; 196 mode = "a"; 197 } else 198 mode = "w"; 199 200 if (strcmp(modules, "stdout") == 0) { 201 opts.debug_file = stdout; 202 return; 203 } 204 if (strcmp(modules, "stderr") == 0) { 205 opts.debug_file = stderr; 206 return; 207 } 208 209 len = strlen(modules); 210 fname = bmake_malloc(len + 20); 211 memcpy(fname, modules, len + 1); 212 213 /* Let the filename be modified by the pid */ 214 if (strcmp(fname + len - 3, ".%d") == 0) 215 snprintf(fname + len - 2, 20, "%d", getpid()); 216 217 opts.debug_file = fopen(fname, mode); 218 if (opts.debug_file == NULL) { 219 fprintf(stderr, "Cannot open debug file %s\n", 220 fname); 221 usage(); 222 } 223 free(fname); 224 } 225 226 static void 227 parse_debug_options(const char *argvalue) 228 { 229 const char *modules; 230 231 for (modules = argvalue; *modules; ++modules) { 232 switch (*modules) { 233 case '0': /* undocumented, only intended for tests */ 234 opts.debug &= DEBUG_LINT; 235 break; 236 case 'A': 237 opts.debug = ~(0|DEBUG_LINT); 238 break; 239 case 'a': 240 opts.debug |= DEBUG_ARCH; 241 break; 242 case 'C': 243 opts.debug |= DEBUG_CWD; 244 break; 245 case 'c': 246 opts.debug |= DEBUG_COND; 247 break; 248 case 'd': 249 opts.debug |= DEBUG_DIR; 250 break; 251 case 'e': 252 opts.debug |= DEBUG_ERROR; 253 break; 254 case 'f': 255 opts.debug |= DEBUG_FOR; 256 break; 257 case 'g': 258 if (modules[1] == '1') { 259 opts.debug |= DEBUG_GRAPH1; 260 ++modules; 261 } 262 else if (modules[1] == '2') { 263 opts.debug |= DEBUG_GRAPH2; 264 ++modules; 265 } 266 else if (modules[1] == '3') { 267 opts.debug |= DEBUG_GRAPH3; 268 ++modules; 269 } 270 break; 271 case 'h': 272 opts.debug |= DEBUG_HASH; 273 break; 274 case 'j': 275 opts.debug |= DEBUG_JOB; 276 break; 277 case 'L': 278 opts.debug |= DEBUG_LINT; 279 break; 280 case 'l': 281 opts.debug |= DEBUG_LOUD; 282 break; 283 case 'M': 284 opts.debug |= DEBUG_META; 285 break; 286 case 'm': 287 opts.debug |= DEBUG_MAKE; 288 break; 289 case 'n': 290 opts.debug |= DEBUG_SCRIPT; 291 break; 292 case 'p': 293 opts.debug |= DEBUG_PARSE; 294 break; 295 case 's': 296 opts.debug |= DEBUG_SUFF; 297 break; 298 case 't': 299 opts.debug |= DEBUG_TARG; 300 break; 301 case 'V': 302 opts.debugVflag = TRUE; 303 break; 304 case 'v': 305 opts.debug |= DEBUG_VAR; 306 break; 307 case 'x': 308 opts.debug |= DEBUG_SHELL; 309 break; 310 case 'F': 311 parse_debug_option_F(modules + 1); 312 goto debug_setbuf; 313 default: 314 (void)fprintf(stderr, 315 "%s: illegal argument to d option -- %c\n", 316 progname, *modules); 317 usage(); 318 } 319 } 320 debug_setbuf: 321 /* 322 * Make the debug_file unbuffered, and make 323 * stdout line buffered (unless debugfile == stdout). 324 */ 325 setvbuf(opts.debug_file, NULL, _IONBF, 0); 326 if (opts.debug_file != stdout) { 327 setvbuf(stdout, NULL, _IOLBF, 0); 328 } 329 } 330 331 /* 332 * does path contain any relative components 333 */ 334 static Boolean 335 is_relpath(const char *path) 336 { 337 const char *cp; 338 339 if (path[0] != '/') 340 return TRUE; 341 cp = path; 342 while ((cp = strstr(cp, "/.")) != NULL) { 343 cp += 2; 344 if (*cp == '.') 345 cp++; 346 if (cp[0] == '/' || cp[0] == '\0') 347 return TRUE; 348 } 349 return FALSE; 350 } 351 352 static void 353 MainParseArgChdir(const char *argvalue) 354 { 355 struct stat sa, sb; 356 357 if (chdir(argvalue) == -1) { 358 (void)fprintf(stderr, "%s: chdir %s: %s\n", 359 progname, argvalue, strerror(errno)); 360 exit(1); 361 } 362 if (getcwd(curdir, MAXPATHLEN) == NULL) { 363 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 364 exit(2); 365 } 366 if (!is_relpath(argvalue) && 367 stat(argvalue, &sa) != -1 && 368 stat(curdir, &sb) != -1 && 369 sa.st_ino == sb.st_ino && 370 sa.st_dev == sb.st_dev) 371 strncpy(curdir, argvalue, MAXPATHLEN); 372 ignorePWD = TRUE; 373 } 374 375 static void 376 MainParseArgJobsInternal(const char *argvalue) 377 { 378 char end; 379 if (sscanf(argvalue, "%d,%d%c", &jp_0, &jp_1, &end) != 2) { 380 (void)fprintf(stderr, 381 "%s: internal error -- J option malformed (%s)\n", 382 progname, argvalue); 383 usage(); 384 } 385 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 386 (fcntl(jp_1, F_GETFD, 0) < 0)) { 387 #if 0 388 (void)fprintf(stderr, 389 "%s: ###### warning -- J descriptors were closed!\n", 390 progname); 391 exit(2); 392 #endif 393 jp_0 = -1; 394 jp_1 = -1; 395 opts.compatMake = TRUE; 396 } else { 397 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 398 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 399 } 400 } 401 402 static void 403 MainParseArgJobs(const char *argvalue) 404 { 405 char *p; 406 407 forceJobs = TRUE; 408 opts.maxJobs = (int)strtol(argvalue, &p, 0); 409 if (*p != '\0' || opts.maxJobs < 1) { 410 (void)fprintf(stderr, 411 "%s: illegal argument to -j -- must be positive integer!\n", 412 progname); 413 exit(1); /* XXX: why not 2? */ 414 } 415 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 416 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 417 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 418 maxJobTokens = opts.maxJobs; 419 } 420 421 static void 422 MainParseArgSysInc(const char *argvalue) 423 { 424 /* look for magic parent directory search string */ 425 if (strncmp(".../", argvalue, 4) == 0) { 426 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 427 if (found_path == NULL) 428 return; 429 (void)Dir_AddDir(sysIncPath, found_path); 430 free(found_path); 431 } else { 432 (void)Dir_AddDir(sysIncPath, argvalue); 433 } 434 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 435 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 436 } 437 438 static Boolean 439 MainParseArg(char c, const char *argvalue) 440 { 441 switch (c) { 442 case '\0': 443 break; 444 case 'B': 445 opts.compatMake = TRUE; 446 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 447 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 448 break; 449 case 'C': 450 MainParseArgChdir(argvalue); 451 break; 452 case 'D': 453 if (argvalue[0] == '\0') return FALSE; 454 Var_Set(argvalue, "1", VAR_GLOBAL); 455 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 456 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 457 break; 458 case 'I': 459 Parse_AddIncludeDir(argvalue); 460 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 461 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 462 break; 463 case 'J': 464 MainParseArgJobsInternal(argvalue); 465 break; 466 case 'N': 467 opts.noExecute = TRUE; 468 opts.noRecursiveExecute = TRUE; 469 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 470 break; 471 case 'S': 472 opts.keepgoing = FALSE; 473 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 474 break; 475 case 'T': 476 tracefile = bmake_strdup(argvalue); 477 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 478 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 479 break; 480 case 'V': 481 case 'v': 482 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED; 483 Lst_Append(opts.variables, bmake_strdup(argvalue)); 484 /* XXX: Why always -V? */ 485 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 486 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 487 break; 488 case 'W': 489 opts.parseWarnFatal = TRUE; 490 /* XXX: why no Var_Append? */ 491 break; 492 case 'X': 493 opts.varNoExportEnv = TRUE; 494 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 495 break; 496 case 'd': 497 /* If '-d-opts' don't pass to children */ 498 if (argvalue[0] == '-') 499 argvalue++; 500 else { 501 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 502 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 503 } 504 parse_debug_options(argvalue); 505 break; 506 case 'e': 507 opts.checkEnvFirst = TRUE; 508 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 509 break; 510 case 'f': 511 Lst_Append(opts.makefiles, bmake_strdup(argvalue)); 512 break; 513 case 'i': 514 opts.ignoreErrors = TRUE; 515 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 516 break; 517 case 'j': 518 MainParseArgJobs(argvalue); 519 break; 520 case 'k': 521 opts.keepgoing = TRUE; 522 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 523 break; 524 case 'm': 525 MainParseArgSysInc(argvalue); 526 /* XXX: why no Var_Append? */ 527 break; 528 case 'n': 529 opts.noExecute = TRUE; 530 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 531 break; 532 case 'q': 533 opts.queryFlag = TRUE; 534 /* Kind of nonsensical, wot? */ 535 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 536 break; 537 case 'r': 538 opts.noBuiltins = TRUE; 539 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 540 break; 541 case 's': 542 opts.beSilent = TRUE; 543 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 544 break; 545 case 't': 546 opts.touchFlag = TRUE; 547 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 548 break; 549 case 'w': 550 opts.enterFlag = TRUE; 551 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 552 break; 553 default: 554 case '?': 555 usage(); 556 } 557 return TRUE; 558 } 559 560 /* Parse the given arguments. Called from main() and from 561 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 562 * 563 * The arguments must be treated as read-only and will be freed after the 564 * call. 565 * 566 * XXX: Deal with command line overriding .MAKEFLAGS in makefile */ 567 static void 568 MainParseArgs(int argc, char **argv) 569 { 570 char c; 571 int arginc; 572 char *argvalue; 573 char *optscan; 574 Boolean inOption, dashDash = FALSE; 575 576 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 577 /* Can't actually use getopt(3) because rescanning is not portable */ 578 579 rearg: 580 inOption = FALSE; 581 optscan = NULL; 582 while (argc > 1) { 583 const char *optspec; 584 if (!inOption) 585 optscan = argv[1]; 586 c = *optscan++; 587 arginc = 0; 588 if (inOption) { 589 if (c == '\0') { 590 ++argv; 591 --argc; 592 inOption = FALSE; 593 continue; 594 } 595 } else { 596 if (c != '-' || dashDash) 597 break; 598 inOption = TRUE; 599 c = *optscan++; 600 } 601 /* '-' found at some earlier point */ 602 optspec = strchr(optspecs, c); 603 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 604 /* -<something> found, and <something> should have an arg */ 605 inOption = FALSE; 606 arginc = 1; 607 argvalue = optscan; 608 if (*argvalue == '\0') { 609 if (argc < 3) 610 goto noarg; 611 argvalue = argv[2]; 612 arginc = 2; 613 } 614 } else { 615 argvalue = NULL; 616 } 617 switch (c) { 618 case '\0': 619 arginc = 1; 620 inOption = FALSE; 621 break; 622 case '-': 623 dashDash = TRUE; 624 break; 625 default: 626 if (!MainParseArg(c, argvalue)) 627 goto noarg; 628 } 629 argv += arginc; 630 argc -= arginc; 631 } 632 633 /* 634 * See if the rest of the arguments are variable assignments and 635 * perform them if so. Else take them to be targets and stuff them 636 * on the end of the "create" list. 637 */ 638 for (; argc > 1; ++argv, --argc) { 639 VarAssign var; 640 if (Parse_IsVar(argv[1], &var)) { 641 Parse_DoVar(&var, VAR_CMDLINE); 642 } else { 643 if (!*argv[1]) 644 Punt("illegal (null) argument."); 645 if (*argv[1] == '-' && !dashDash) 646 goto rearg; 647 Lst_Append(opts.create, bmake_strdup(argv[1])); 648 } 649 } 650 651 return; 652 noarg: 653 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 654 progname, c); 655 usage(); 656 } 657 658 /* Break a line of arguments into words and parse them. 659 * 660 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 661 * by main() when reading the MAKEFLAGS environment variable. */ 662 void 663 Main_ParseArgLine(const char *line) 664 { 665 Words words; 666 char *buf; 667 668 if (line == NULL) 669 return; 670 for (; *line == ' '; ++line) 671 continue; 672 if (line[0] == '\0') 673 return; 674 675 { 676 void *freeIt; 677 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &freeIt); 678 buf = str_concat3(argv0, " ", line); 679 free(freeIt); 680 } 681 682 words = Str_Words(buf, TRUE); 683 if (words.words == NULL) { 684 Error("Unterminated quoted string [%s]", buf); 685 free(buf); 686 return; 687 } 688 free(buf); 689 MainParseArgs((int)words.len, words.words); 690 691 Words_Free(words); 692 } 693 694 Boolean 695 Main_SetObjdir(const char *fmt, ...) 696 { 697 struct stat sb; 698 char *path; 699 char buf[MAXPATHLEN + 1]; 700 char buf2[MAXPATHLEN + 1]; 701 Boolean rc = FALSE; 702 va_list ap; 703 704 va_start(ap, fmt); 705 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 706 va_end(ap); 707 708 if (path[0] != '/') { 709 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 710 path = buf2; 711 } 712 713 /* look for the directory and try to chdir there */ 714 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 715 /* if not .CURDIR it must be writable */ 716 if ((strcmp(path, curdir) != 0 && access(path, W_OK) != 0) || 717 (chdir(path) != 0)) { 718 (void)fprintf(stderr, "make warning: %s: %s.\n", 719 path, strerror(errno)); 720 } else { 721 snprintf(objdir, sizeof objdir, "%s", path); 722 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 723 setenv("PWD", objdir, 1); 724 Dir_InitDot(); 725 purge_cached_realpaths(); 726 rc = TRUE; 727 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 728 enterFlagObj = TRUE; 729 } 730 } 731 732 return rc; 733 } 734 735 static Boolean 736 Main_SetVarObjdir(const char *var, const char *suffix) 737 { 738 void *path_freeIt; 739 const char *path = Var_Value(var, VAR_CMDLINE, &path_freeIt); 740 const char *xpath; 741 char *xpath_freeIt; 742 743 if (path == NULL || path[0] == '\0') { 744 bmake_free(path_freeIt); 745 return FALSE; 746 } 747 748 /* expand variable substitutions */ 749 xpath = path; 750 xpath_freeIt = NULL; 751 if (strchr(path, '$') != 0) { 752 (void)Var_Subst(path, VAR_GLOBAL, VARE_WANTRES, &xpath_freeIt); 753 /* TODO: handle errors */ 754 xpath = xpath_freeIt; 755 } 756 757 (void)Main_SetObjdir("%s%s", xpath, suffix); 758 759 bmake_free(xpath_freeIt); 760 bmake_free(path_freeIt); 761 return TRUE; 762 } 763 764 /* Read and parse the makefile. 765 * Return TRUE if reading the makefile succeeded. */ 766 static int 767 ReadMakefileSucceeded(void *fname, void *unused) 768 { 769 return ReadMakefile(fname) == 0; 770 } 771 772 int 773 str2Lst_Append(StringList *lp, char *str, const char *sep) 774 { 775 char *cp; 776 int n; 777 778 if (!sep) 779 sep = " \t"; 780 781 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 782 Lst_Append(lp, cp); 783 n++; 784 } 785 return n; 786 } 787 788 #ifdef SIGINFO 789 /*ARGSUSED*/ 790 static void 791 siginfo(int signo MAKE_ATTR_UNUSED) 792 { 793 char dir[MAXPATHLEN]; 794 char str[2 * MAXPATHLEN]; 795 int len; 796 if (getcwd(dir, sizeof dir) == NULL) 797 return; 798 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 799 if (len > 0) 800 (void)write(STDERR_FILENO, str, (size_t)len); 801 } 802 #endif 803 804 /* 805 * Allow makefiles some control over the mode we run in. 806 */ 807 void 808 MakeMode(const char *mode) 809 { 810 char *mode_freeIt = NULL; 811 812 if (mode == NULL) { 813 (void)Var_Subst("${" MAKE_MODE ":tl}", 814 VAR_GLOBAL, VARE_WANTRES, &mode_freeIt); 815 /* TODO: handle errors */ 816 mode = mode_freeIt; 817 } 818 819 if (mode[0] != '\0') { 820 if (strstr(mode, "compat")) { 821 opts.compatMake = TRUE; 822 forceJobs = FALSE; 823 } 824 #if USE_META 825 if (strstr(mode, "meta")) 826 meta_mode_init(mode); 827 #endif 828 } 829 830 free(mode_freeIt); 831 } 832 833 static void 834 PrintVar(const char *varname, Boolean expandVars) 835 { 836 if (strchr(varname, '$')) { 837 char *evalue; 838 (void)Var_Subst(varname, VAR_GLOBAL, VARE_WANTRES, &evalue); 839 /* TODO: handle errors */ 840 printf("%s\n", evalue); 841 bmake_free(evalue); 842 843 } else if (expandVars) { 844 char *expr = str_concat3("${", varname, "}"); 845 char *evalue; 846 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &evalue); 847 /* TODO: handle errors */ 848 free(expr); 849 printf("%s\n", evalue); 850 bmake_free(evalue); 851 852 } else { 853 void *freeIt; 854 const char *value = Var_Value(varname, VAR_GLOBAL, &freeIt); 855 printf("%s\n", value ? value : ""); 856 bmake_free(freeIt); 857 } 858 } 859 860 /* 861 * Return a Boolean based on a variable. 862 * 863 * If the knob is not set, return the fallback. 864 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 865 * is FALSE, otherwise TRUE. 866 */ 867 static Boolean 868 GetBooleanVar(const char *varname, Boolean fallback) 869 { 870 char *expr = str_concat3("${", varname, ":U}"); 871 char *value; 872 Boolean res; 873 874 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 875 /* TODO: handle errors */ 876 res = ParseBoolean(value, fallback); 877 free(value); 878 free(expr); 879 return res; 880 } 881 882 static void 883 doPrintVars(void) 884 { 885 StringListNode *ln; 886 Boolean expandVars; 887 888 if (opts.printVars == PVM_EXPANDED) 889 expandVars = TRUE; 890 else if (opts.debugVflag) 891 expandVars = FALSE; 892 else 893 expandVars = GetBooleanVar(".MAKE.EXPAND_VARIABLES", FALSE); 894 895 for (ln = opts.variables->first; ln != NULL; ln = ln->next) { 896 const char *varname = ln->datum; 897 PrintVar(varname, expandVars); 898 } 899 } 900 901 static Boolean 902 runTargets(void) 903 { 904 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 905 Boolean outOfDate; /* FALSE if all targets up to date */ 906 907 /* 908 * Have now read the entire graph and need to make a list of 909 * targets to create. If none was given on the command line, 910 * we consult the parsing module to find the main target(s) 911 * to create. 912 */ 913 if (Lst_IsEmpty(opts.create)) 914 targs = Parse_MainName(); 915 else 916 targs = Targ_FindList(opts.create); 917 918 if (!opts.compatMake) { 919 /* 920 * Initialize job module before traversing the graph 921 * now that any .BEGIN and .END targets have been read. 922 * This is done only if the -q flag wasn't given 923 * (to prevent the .BEGIN from being executed should 924 * it exist). 925 */ 926 if (!opts.queryFlag) { 927 Job_Init(); 928 jobsRunning = TRUE; 929 } 930 931 /* Traverse the graph, checking on all the targets */ 932 outOfDate = Make_Run(targs); 933 } else { 934 /* 935 * Compat_Init will take care of creating all the 936 * targets as well as initializing the module. 937 */ 938 Compat_Run(targs); 939 outOfDate = FALSE; 940 } 941 Lst_Free(targs); 942 return outOfDate; 943 } 944 945 /* 946 * Set up the .TARGETS variable to contain the list of targets to be 947 * created. If none specified, make the variable empty -- the parser 948 * will fill the thing in with the default or .MAIN target. 949 */ 950 static void 951 InitVarTargets(void) 952 { 953 StringListNode *ln; 954 955 if (Lst_IsEmpty(opts.create)) { 956 Var_Set(".TARGETS", "", VAR_GLOBAL); 957 return; 958 } 959 960 for (ln = opts.create->first; ln != NULL; ln = ln->next) { 961 char *name = ln->datum; 962 Var_Append(".TARGETS", name, VAR_GLOBAL); 963 } 964 } 965 966 static void 967 InitRandom(void) 968 { 969 struct timeval tv; 970 971 gettimeofday(&tv, NULL); 972 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 973 } 974 975 static const char * 976 init_machine(const struct utsname *utsname) 977 { 978 const char *machine = getenv("MACHINE"); 979 if (machine != NULL) 980 return machine; 981 982 #ifdef MAKE_NATIVE 983 return utsname->machine; 984 #else 985 #ifdef MAKE_MACHINE 986 return MAKE_MACHINE; 987 #else 988 return "unknown"; 989 #endif 990 #endif 991 } 992 993 static const char * 994 init_machine_arch(void) 995 { 996 const char *env = getenv("MACHINE_ARCH"); 997 if (env != NULL) 998 return env; 999 1000 #ifdef MAKE_NATIVE 1001 { 1002 struct utsname utsname; 1003 static char machine_arch_buf[sizeof utsname.machine]; 1004 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1005 size_t len = sizeof machine_arch_buf; 1006 1007 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1008 &len, NULL, 0) < 0) { 1009 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1010 strerror(errno)); 1011 exit(2); 1012 } 1013 1014 return machine_arch_buf; 1015 } 1016 #else 1017 #ifndef MACHINE_ARCH 1018 #ifdef MAKE_MACHINE_ARCH 1019 return MAKE_MACHINE_ARCH; 1020 #else 1021 return "unknown"; 1022 #endif 1023 #else 1024 return MACHINE_ARCH; 1025 #endif 1026 #endif 1027 } 1028 1029 #ifndef NO_PWD_OVERRIDE 1030 /* 1031 * All this code is so that we know where we are when we start up 1032 * on a different machine with pmake. 1033 * 1034 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1035 * since the value of curdir can vary depending on how we got 1036 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1037 * or via subdir.mk in which case its likely a shell which does 1038 * not provide it. 1039 * 1040 * So, to stop it breaking this case only, we ignore PWD if 1041 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1042 */ 1043 static void 1044 HandlePWD(const struct stat *curdir_st) 1045 { 1046 char *pwd; 1047 void *prefix_freeIt, *makeobjdir_freeIt; 1048 const char *makeobjdir; 1049 struct stat pwd_st; 1050 1051 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1052 return; 1053 1054 if (Var_Value("MAKEOBJDIRPREFIX", VAR_CMDLINE, &prefix_freeIt) != NULL) { 1055 bmake_free(prefix_freeIt); 1056 return; 1057 } 1058 1059 makeobjdir = Var_Value("MAKEOBJDIR", VAR_CMDLINE, &makeobjdir_freeIt); 1060 if (makeobjdir != NULL && strchr(makeobjdir, '$') != NULL) 1061 goto ignore_pwd; 1062 1063 if (stat(pwd, &pwd_st) == 0 && 1064 curdir_st->st_ino == pwd_st.st_ino && 1065 curdir_st->st_dev == pwd_st.st_dev) 1066 (void)strncpy(curdir, pwd, MAXPATHLEN); 1067 1068 ignore_pwd: 1069 bmake_free(makeobjdir_freeIt); 1070 } 1071 #endif 1072 1073 /* 1074 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1075 * MAKEOBJDIR is set in the environment, try only that value 1076 * and fall back to .CURDIR if it does not exist. 1077 * 1078 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1079 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1080 * of these paths exist, just use .CURDIR. 1081 */ 1082 static void 1083 InitObjdir(const char *machine, const char *machine_arch) 1084 { 1085 Dir_InitDir(curdir); 1086 (void)Main_SetObjdir("%s", curdir); 1087 1088 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1089 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1090 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1091 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1092 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1093 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1094 } 1095 1096 /* get rid of resource limit on file descriptors */ 1097 static void 1098 UnlimitFiles(void) 1099 { 1100 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1101 struct rlimit rl; 1102 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1103 rl.rlim_cur != rl.rlim_max) { 1104 rl.rlim_cur = rl.rlim_max; 1105 (void)setrlimit(RLIMIT_NOFILE, &rl); 1106 } 1107 #endif 1108 } 1109 1110 static void 1111 CmdOpts_Init(void) 1112 { 1113 opts.compatMake = FALSE; /* No compat mode */ 1114 opts.debug = 0; /* No debug verbosity, please. */ 1115 /* opts.debug_file has been initialized earlier */ 1116 opts.debugVflag = FALSE; 1117 opts.checkEnvFirst = FALSE; 1118 opts.makefiles = Lst_New(); 1119 opts.ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1120 opts.maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1121 opts.keepgoing = FALSE; /* Stop on error */ 1122 opts.noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1123 opts.noExecute = FALSE; /* Execute all commands */ 1124 opts.queryFlag = FALSE; /* This is not just a check-run */ 1125 opts.noBuiltins = FALSE; /* Read the built-in rules */ 1126 opts.beSilent = FALSE; /* Print commands as executed */ 1127 opts.touchFlag = FALSE; /* Actually update targets */ 1128 opts.printVars = PVM_NONE; 1129 opts.variables = Lst_New(); 1130 opts.parseWarnFatal = FALSE; 1131 opts.enterFlag = FALSE; 1132 opts.varNoExportEnv = FALSE; 1133 opts.create = Lst_New(); 1134 } 1135 1136 /* Initialize MAKE and .MAKE to the path of the executable, so that it can be 1137 * found by execvp(3) and the shells, even after a chdir. 1138 * 1139 * If it's a relative path and contains a '/', resolve it to an absolute path. 1140 * Otherwise keep it as is, assuming it will be found in the PATH. */ 1141 static void 1142 InitVarMake(const char *argv0) 1143 { 1144 const char *make = argv0; 1145 1146 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1147 char pathbuf[MAXPATHLEN]; 1148 const char *abs = cached_realpath(argv0, pathbuf); 1149 struct stat st; 1150 if (abs != NULL && abs[0] == '/' && stat(make, &st) == 0) 1151 make = abs; 1152 } 1153 1154 Var_Set("MAKE", make, VAR_GLOBAL); 1155 Var_Set(".MAKE", make, VAR_GLOBAL); 1156 } 1157 1158 /* Add the directories from the colon-separated syspath to defSysIncPath. 1159 * After returning, the contents of syspath is unspecified. */ 1160 static void 1161 InitDefSysIncPath(char *syspath) 1162 { 1163 static char defsyspath[] = _PATH_DEFSYSPATH; 1164 char *start, *cp; 1165 1166 /* 1167 * If no user-supplied system path was given (through the -m option) 1168 * add the directories from the DEFSYSPATH (more than one may be given 1169 * as dir1:...:dirn) to the system include path. 1170 */ 1171 if (syspath == NULL || syspath[0] == '\0') 1172 syspath = defsyspath; 1173 else 1174 syspath = bmake_strdup(syspath); 1175 1176 for (start = syspath; *start != '\0'; start = cp) { 1177 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1178 continue; 1179 if (*cp == ':') 1180 *cp++ = '\0'; 1181 1182 /* look for magic parent directory search string */ 1183 if (strncmp(".../", start, 4) != 0) { 1184 (void)Dir_AddDir(defSysIncPath, start); 1185 } else { 1186 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1187 if (dir != NULL) { 1188 (void)Dir_AddDir(defSysIncPath, dir); 1189 free(dir); 1190 } 1191 } 1192 } 1193 1194 if (syspath != defsyspath) 1195 free(syspath); 1196 } 1197 1198 static void 1199 ReadBuiltinRules(void) 1200 { 1201 StringList *sysMkPath = Lst_New(); 1202 Dir_Expand(_PATH_DEFSYSMK, 1203 Lst_IsEmpty(sysIncPath) ? defSysIncPath : sysIncPath, 1204 sysMkPath); 1205 if (Lst_IsEmpty(sysMkPath)) 1206 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1207 if (!Lst_ForEachUntil(sysMkPath, ReadMakefileSucceeded, NULL)) 1208 Fatal("%s: cannot open %s.", progname, 1209 (char *)sysMkPath->first->datum); 1210 /* XXX: sysMkPath is not freed */ 1211 } 1212 1213 static void 1214 InitMaxJobs(void) 1215 { 1216 char *value; 1217 int n; 1218 1219 if (forceJobs || opts.compatMake || 1220 !Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) 1221 return; 1222 1223 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1224 /* TODO: handle errors */ 1225 n = (int)strtol(value, NULL, 0); 1226 if (n < 1) { 1227 (void)fprintf(stderr, 1228 "%s: illegal value for .MAKE.JOBS " 1229 "-- must be positive integer!\n", 1230 progname); 1231 exit(1); 1232 } 1233 1234 if (n != opts.maxJobs) { 1235 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1236 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1237 } 1238 1239 opts.maxJobs = n; 1240 maxJobTokens = opts.maxJobs; 1241 forceJobs = TRUE; 1242 free(value); 1243 } 1244 1245 /* 1246 * For compatibility, look at the directories in the VPATH variable 1247 * and add them to the search path, if the variable is defined. The 1248 * variable's value is in the same format as the PATH environment 1249 * variable, i.e. <directory>:<directory>:<directory>... 1250 */ 1251 static void 1252 InitVpath(void) 1253 { 1254 char *vpath, savec, *path; 1255 if (!Var_Exists("VPATH", VAR_CMDLINE)) 1256 return; 1257 1258 (void)Var_Subst("${VPATH}", VAR_CMDLINE, VARE_WANTRES, &vpath); 1259 /* TODO: handle errors */ 1260 path = vpath; 1261 do { 1262 char *cp; 1263 /* skip to end of directory */ 1264 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1265 continue; 1266 /* Save terminator character so know when to stop */ 1267 savec = *cp; 1268 *cp = '\0'; 1269 /* Add directory to search path */ 1270 (void)Dir_AddDir(dirSearchPath, path); 1271 *cp = savec; 1272 path = cp + 1; 1273 } while (savec == ':'); 1274 free(vpath); 1275 } 1276 1277 static void 1278 ReadAllMakefiles(StringList *makefiles) 1279 { 1280 StringListNode *ln; 1281 1282 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1283 const char *fname = ln->datum; 1284 if (ReadMakefile(fname) != 0) 1285 Fatal("%s: cannot open %s.", progname, fname); 1286 } 1287 } 1288 1289 static void 1290 ReadFirstDefaultMakefile(void) 1291 { 1292 char *prefs; 1293 (void)Var_Subst("${" MAKE_MAKEFILE_PREFERENCE "}", 1294 VAR_CMDLINE, VARE_WANTRES, &prefs); 1295 /* TODO: handle errors */ 1296 1297 /* XXX: This should use a local list instead of opts.makefiles 1298 * since these makefiles do not come from the command line. They 1299 * also have different semantics in that only the first file that 1300 * is found is processed. See ReadAllMakefiles. */ 1301 (void)str2Lst_Append(opts.makefiles, prefs, NULL); 1302 (void)Lst_ForEachUntil(opts.makefiles, ReadMakefileSucceeded, NULL); 1303 free(prefs); 1304 } 1305 1306 static void 1307 CleanUp(void) 1308 { 1309 #ifdef CLEANUP 1310 Lst_Destroy(opts.variables, free); 1311 Lst_Free(opts.makefiles); /* don't free, may be used in GNodes */ 1312 Lst_Destroy(opts.create, free); 1313 #endif 1314 1315 /* print the graph now it's been processed if the user requested it */ 1316 if (DEBUG(GRAPH2)) 1317 Targ_PrintGraph(2); 1318 1319 Trace_Log(MAKEEND, NULL); 1320 1321 if (enterFlagObj) 1322 printf("%s: Leaving directory `%s'\n", progname, objdir); 1323 if (opts.enterFlag) 1324 printf("%s: Leaving directory `%s'\n", progname, curdir); 1325 1326 #ifdef USE_META 1327 meta_finish(); 1328 #endif 1329 Suff_End(); 1330 Targ_End(); 1331 Arch_End(); 1332 Var_End(); 1333 Parse_End(); 1334 Dir_End(); 1335 Job_End(); 1336 Trace_End(); 1337 } 1338 1339 /*- 1340 * main -- 1341 * The main function, for obvious reasons. Initializes variables 1342 * and a few modules, then parses the arguments give it in the 1343 * environment and on the command line. Reads the system makefile 1344 * followed by either Makefile, makefile or the file given by the 1345 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 1346 * flags it has received by then uses either the Make or the Compat 1347 * module to create the initial list of targets. 1348 * 1349 * Results: 1350 * If -q was given, exits -1 if anything was out-of-date. Else it exits 1351 * 0. 1352 * 1353 * Side Effects: 1354 * The program exits when done. Targets are created. etc. etc. etc. 1355 */ 1356 int 1357 main(int argc, char **argv) 1358 { 1359 Boolean outOfDate; /* FALSE if all targets up to date */ 1360 struct stat sa; 1361 const char *machine; 1362 const char *machine_arch; 1363 char *syspath = getenv("MAKESYSPATH"); 1364 struct utsname utsname; 1365 1366 /* default to writing debug to stderr */ 1367 opts.debug_file = stderr; 1368 1369 #ifdef SIGINFO 1370 (void)bmake_signal(SIGINFO, siginfo); 1371 #endif 1372 1373 InitRandom(); 1374 1375 if ((progname = strrchr(argv[0], '/')) != NULL) 1376 progname++; 1377 else 1378 progname = argv[0]; 1379 1380 UnlimitFiles(); 1381 1382 if (uname(&utsname) == -1) { 1383 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1384 strerror(errno)); 1385 exit(2); 1386 } 1387 1388 /* 1389 * Get the name of this type of MACHINE from utsname 1390 * so we can share an executable for similar machines. 1391 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1392 * 1393 * Note that both MACHINE and MACHINE_ARCH are decided at 1394 * run-time. 1395 */ 1396 machine = init_machine(&utsname); 1397 machine_arch = init_machine_arch(); 1398 1399 myPid = getpid(); /* remember this for vFork() */ 1400 1401 /* 1402 * Just in case MAKEOBJDIR wants us to do something tricky. 1403 */ 1404 Var_Init(); /* Initialize the lists of variables for 1405 * parsing arguments */ 1406 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1407 Var_Set("MACHINE", machine, VAR_GLOBAL); 1408 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1409 #ifdef MAKE_VERSION 1410 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1411 #endif 1412 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1413 /* 1414 * This is the traditional preference for makefiles. 1415 */ 1416 #ifndef MAKEFILE_PREFERENCE_LIST 1417 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1418 #endif 1419 Var_Set(MAKE_MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1420 VAR_GLOBAL); 1421 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1422 1423 CmdOpts_Init(); 1424 allPrecious = FALSE; /* Remove targets when interrupted */ 1425 deleteOnError = FALSE; /* Historical default behavior */ 1426 jobsRunning = FALSE; 1427 1428 maxJobTokens = opts.maxJobs; 1429 ignorePWD = FALSE; 1430 1431 /* 1432 * Initialize the parsing, directory and variable modules to prepare 1433 * for the reading of inclusion paths and variable settings on the 1434 * command line 1435 */ 1436 1437 /* 1438 * Initialize various variables. 1439 * MAKE also gets this name, for compatibility 1440 * .MAKEFLAGS gets set to the empty string just in case. 1441 * MFLAGS also gets initialized empty, for compatibility. 1442 */ 1443 Parse_Init(); 1444 InitVarMake(argv[0]); 1445 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1446 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1447 Var_Set("MFLAGS", "", VAR_GLOBAL); 1448 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1449 /* some makefiles need to know this */ 1450 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMDLINE); 1451 1452 /* 1453 * Set some other useful macros 1454 */ 1455 { 1456 char tmp[64], *ep = getenv(MAKE_LEVEL_ENV); 1457 1458 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1459 if (makelevel < 0) 1460 makelevel = 0; 1461 snprintf(tmp, sizeof tmp, "%d", makelevel); 1462 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1463 snprintf(tmp, sizeof tmp, "%u", myPid); 1464 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1465 snprintf(tmp, sizeof tmp, "%u", getppid()); 1466 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1467 } 1468 if (makelevel > 0) { 1469 char pn[1024]; 1470 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1471 progname = bmake_strdup(pn); 1472 } 1473 1474 #ifdef USE_META 1475 meta_init(); 1476 #endif 1477 Dir_Init(); 1478 1479 /* 1480 * First snag any flags out of the MAKE environment variable. 1481 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1482 * in a different format). 1483 */ 1484 #ifdef POSIX 1485 { 1486 char *p1 = explode(getenv("MAKEFLAGS")); 1487 Main_ParseArgLine(p1); 1488 free(p1); 1489 } 1490 #else 1491 Main_ParseArgLine(getenv("MAKE")); 1492 #endif 1493 1494 /* 1495 * Find where we are (now). 1496 * We take care of PWD for the automounter below... 1497 */ 1498 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1499 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1500 progname, strerror(errno)); 1501 exit(2); 1502 } 1503 1504 MainParseArgs(argc, argv); 1505 1506 if (opts.enterFlag) 1507 printf("%s: Entering directory `%s'\n", progname, curdir); 1508 1509 /* 1510 * Verify that cwd is sane. 1511 */ 1512 if (stat(curdir, &sa) == -1) { 1513 (void)fprintf(stderr, "%s: %s: %s.\n", 1514 progname, curdir, strerror(errno)); 1515 exit(2); 1516 } 1517 1518 #ifndef NO_PWD_OVERRIDE 1519 HandlePWD(&sa); 1520 #endif 1521 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1522 1523 InitObjdir(machine, machine_arch); 1524 1525 /* 1526 * Initialize archive, target and suffix modules in preparation for 1527 * parsing the makefile(s) 1528 */ 1529 Arch_Init(); 1530 Targ_Init(); 1531 Suff_Init(); 1532 Trace_Init(tracefile); 1533 1534 DEFAULT = NULL; 1535 (void)time(&now); 1536 1537 Trace_Log(MAKESTART, NULL); 1538 1539 InitVarTargets(); 1540 1541 InitDefSysIncPath(syspath); 1542 1543 /* 1544 * Read in the built-in rules first, followed by the specified 1545 * makefiles, or the default makefile and Makefile, in that order, 1546 * if no makefiles were given on the command line. 1547 */ 1548 if (!opts.noBuiltins) 1549 ReadBuiltinRules(); 1550 if (!Lst_IsEmpty(opts.makefiles)) 1551 ReadAllMakefiles(opts.makefiles); 1552 else 1553 ReadFirstDefaultMakefile(); 1554 1555 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1556 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1557 /* ignore /dev/null and anything starting with "no" */ 1558 (void)Var_Subst("${.MAKE.DEPENDFILE:N/dev/null:Nno*:T}", 1559 VAR_CMDLINE, VARE_WANTRES, &makeDependfile); 1560 if (makeDependfile[0] != '\0') { 1561 /* TODO: handle errors */ 1562 doing_depend = TRUE; 1563 (void)ReadMakefile(makeDependfile); 1564 doing_depend = FALSE; 1565 } 1566 } 1567 1568 if (enterFlagObj) 1569 printf("%s: Entering directory `%s'\n", progname, objdir); 1570 1571 MakeMode(NULL); 1572 1573 { 1574 void *freeIt; 1575 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &freeIt), 1576 VAR_GLOBAL); 1577 bmake_free(freeIt); 1578 1579 } 1580 1581 InitMaxJobs(); 1582 1583 /* 1584 * Be compatible if user did not specify -j and did not explicitly 1585 * turned compatibility on 1586 */ 1587 if (!opts.compatMake && !forceJobs) { 1588 opts.compatMake = TRUE; 1589 } 1590 1591 if (!opts.compatMake) 1592 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1593 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1594 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1595 1596 if (opts.printVars == PVM_NONE) 1597 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1598 1599 InitVpath(); 1600 1601 /* 1602 * Now that all search paths have been read for suffixes et al, it's 1603 * time to add the default search path to their lists... 1604 */ 1605 Suff_DoPaths(); 1606 1607 /* 1608 * Propagate attributes through :: dependency lists. 1609 */ 1610 Targ_Propagate(); 1611 1612 /* print the initial graph, if the user requested it */ 1613 if (DEBUG(GRAPH1)) 1614 Targ_PrintGraph(1); 1615 1616 /* print the values of any variables requested by the user */ 1617 if (opts.printVars != PVM_NONE) { 1618 doPrintVars(); 1619 outOfDate = FALSE; 1620 } else { 1621 outOfDate = runTargets(); 1622 } 1623 1624 CleanUp(); 1625 1626 if (DEBUG(LINT) && (errors > 0 || Parse_GetFatals() > 0)) 1627 return 2; /* Not 1 so -q can distinguish error */ 1628 return outOfDate ? 1 : 0; 1629 } 1630 1631 /* Open and parse the given makefile, with all its side effects. 1632 * 1633 * Results: 1634 * 0 if ok. -1 if couldn't open file. 1635 */ 1636 static int 1637 ReadMakefile(const char *fname) 1638 { 1639 int fd; 1640 char *name, *path = NULL; 1641 1642 if (!strcmp(fname, "-")) { 1643 Parse_File(NULL /*stdin*/, -1); 1644 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1645 } else { 1646 /* if we've chdir'd, rebuild the path name */ 1647 if (strcmp(curdir, objdir) && *fname != '/') { 1648 path = str_concat3(curdir, "/", fname); 1649 fd = open(path, O_RDONLY); 1650 if (fd != -1) { 1651 fname = path; 1652 goto found; 1653 } 1654 free(path); 1655 1656 /* If curdir failed, try objdir (ala .depend) */ 1657 path = str_concat3(objdir, "/", fname); 1658 fd = open(path, O_RDONLY); 1659 if (fd != -1) { 1660 fname = path; 1661 goto found; 1662 } 1663 } else { 1664 fd = open(fname, O_RDONLY); 1665 if (fd != -1) 1666 goto found; 1667 } 1668 /* look in -I and system include directories. */ 1669 name = Dir_FindFile(fname, parseIncPath); 1670 if (!name) { 1671 SearchPath *sysInc = Lst_IsEmpty(sysIncPath) 1672 ? defSysIncPath : sysIncPath; 1673 name = Dir_FindFile(fname, sysInc); 1674 } 1675 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1676 free(name); 1677 free(path); 1678 return -1; 1679 } 1680 fname = name; 1681 /* 1682 * set the MAKEFILE variable desired by System V fans -- the 1683 * placement of the setting here means it gets set to the last 1684 * makefile specified, as it is set by SysV make. 1685 */ 1686 found: 1687 if (!doing_depend) 1688 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1689 Parse_File(fname, fd); 1690 } 1691 free(path); 1692 return 0; 1693 } 1694 1695 1696 1697 /*- 1698 * Cmd_Exec -- 1699 * Execute the command in cmd, and return the output of that command 1700 * in a string. In the output, newlines are replaced with spaces. 1701 * 1702 * Results: 1703 * A string containing the output of the command, or the empty string. 1704 * *errfmt returns a format string describing the command failure, 1705 * if any, using a single %s conversion specification. 1706 * 1707 * Side Effects: 1708 * The string must be freed by the caller. 1709 */ 1710 char * 1711 Cmd_Exec(const char *cmd, const char **errfmt) 1712 { 1713 const char *args[4]; /* Args for invoking the shell */ 1714 int fds[2]; /* Pipe streams */ 1715 int cpid; /* Child PID */ 1716 int pid; /* PID from wait() */ 1717 int status; /* command exit status */ 1718 Buffer buf; /* buffer to store the result */ 1719 ssize_t bytes_read; 1720 char *res; /* result */ 1721 size_t res_len; 1722 char *cp; 1723 int savederr; /* saved errno */ 1724 1725 *errfmt = NULL; 1726 1727 if (!shellName) 1728 Shell_Init(); 1729 /* 1730 * Set up arguments for shell 1731 */ 1732 args[0] = shellName; 1733 args[1] = "-c"; 1734 args[2] = cmd; 1735 args[3] = NULL; 1736 1737 /* 1738 * Open a pipe for fetching its output 1739 */ 1740 if (pipe(fds) == -1) { 1741 *errfmt = "Couldn't create pipe for \"%s\""; 1742 goto bad; 1743 } 1744 1745 /* 1746 * Fork 1747 */ 1748 switch (cpid = vFork()) { 1749 case 0: 1750 (void)close(fds[0]); /* Close input side of pipe */ 1751 1752 /* 1753 * Duplicate the output stream to the shell's output, then 1754 * shut the extra thing down. Note we don't fetch the error 1755 * stream...why not? Why? 1756 */ 1757 (void)dup2(fds[1], 1); 1758 (void)close(fds[1]); 1759 1760 Var_ExportVars(); 1761 1762 (void)execv(shellPath, UNCONST(args)); 1763 _exit(1); 1764 /*NOTREACHED*/ 1765 1766 case -1: 1767 *errfmt = "Couldn't exec \"%s\""; 1768 goto bad; 1769 1770 default: 1771 (void)close(fds[1]); /* No need for the writing half */ 1772 1773 savederr = 0; 1774 Buf_Init(&buf); 1775 1776 do { 1777 char result[BUFSIZ]; 1778 bytes_read = read(fds[0], result, sizeof result); 1779 if (bytes_read > 0) 1780 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1781 } while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1782 if (bytes_read == -1) 1783 savederr = errno; 1784 1785 (void)close(fds[0]); /* Close the input side of the pipe. */ 1786 1787 /* Wait for the process to exit. */ 1788 while((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1789 JobReapChild(pid, status, FALSE); 1790 1791 res_len = Buf_Len(&buf); 1792 res = Buf_Destroy(&buf, FALSE); 1793 1794 if (savederr != 0) 1795 *errfmt = "Couldn't read shell's output for \"%s\""; 1796 1797 if (WIFSIGNALED(status)) 1798 *errfmt = "\"%s\" exited on a signal"; 1799 else if (WEXITSTATUS(status) != 0) 1800 *errfmt = "\"%s\" returned non-zero status"; 1801 1802 /* Convert newlines to spaces. A final newline is just stripped */ 1803 if (res_len > 0 && res[res_len - 1] == '\n') 1804 res[res_len - 1] = '\0'; 1805 for (cp = res; *cp != '\0'; cp++) 1806 if (*cp == '\n') 1807 *cp = ' '; 1808 break; 1809 } 1810 return res; 1811 bad: 1812 return bmake_strdup(""); 1813 } 1814 1815 /* Print a printf-style error message. 1816 * 1817 * In default mode, this error message has no consequences, in particular it 1818 * does not affect the exit status. Only in lint mode (-dL) it does. */ 1819 void 1820 Error(const char *fmt, ...) 1821 { 1822 va_list ap; 1823 FILE *err_file; 1824 1825 err_file = opts.debug_file; 1826 if (err_file == stdout) 1827 err_file = stderr; 1828 (void)fflush(stdout); 1829 for (;;) { 1830 va_start(ap, fmt); 1831 fprintf(err_file, "%s: ", progname); 1832 (void)vfprintf(err_file, fmt, ap); 1833 va_end(ap); 1834 (void)fprintf(err_file, "\n"); 1835 (void)fflush(err_file); 1836 if (err_file == stderr) 1837 break; 1838 err_file = stderr; 1839 } 1840 errors++; 1841 } 1842 1843 /* Produce a Fatal error message, then exit immediately. 1844 * 1845 * If jobs are running, wait for them to finish. */ 1846 void 1847 Fatal(const char *fmt, ...) 1848 { 1849 va_list ap; 1850 1851 va_start(ap, fmt); 1852 if (jobsRunning) 1853 Job_Wait(); 1854 1855 (void)fflush(stdout); 1856 (void)vfprintf(stderr, fmt, ap); 1857 va_end(ap); 1858 (void)fprintf(stderr, "\n"); 1859 (void)fflush(stderr); 1860 1861 PrintOnError(NULL, NULL); 1862 1863 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1864 Targ_PrintGraph(2); 1865 Trace_Log(MAKEERROR, NULL); 1866 exit(2); /* Not 1 so -q can distinguish error */ 1867 } 1868 1869 /* Major exception once jobs are being created. 1870 * Kills all jobs, prints a message and exits. */ 1871 void 1872 Punt(const char *fmt, ...) 1873 { 1874 va_list ap; 1875 1876 va_start(ap, fmt); 1877 (void)fflush(stdout); 1878 (void)fprintf(stderr, "%s: ", progname); 1879 (void)vfprintf(stderr, fmt, ap); 1880 va_end(ap); 1881 (void)fprintf(stderr, "\n"); 1882 (void)fflush(stderr); 1883 1884 PrintOnError(NULL, NULL); 1885 1886 DieHorribly(); 1887 } 1888 1889 /* Exit without giving a message. */ 1890 void 1891 DieHorribly(void) 1892 { 1893 if (jobsRunning) 1894 Job_AbortAll(); 1895 if (DEBUG(GRAPH2)) 1896 Targ_PrintGraph(2); 1897 Trace_Log(MAKEERROR, NULL); 1898 exit(2); /* Not 1, so -q can distinguish error */ 1899 } 1900 1901 /* Called when aborting due to errors in child shell to signal abnormal exit. 1902 * The program exits. 1903 * Errors is the number of errors encountered in Make_Make. */ 1904 void 1905 Finish(int errs) 1906 { 1907 if (shouldDieQuietly(NULL, -1)) 1908 exit(2); 1909 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1910 } 1911 1912 /* 1913 * eunlink -- 1914 * Remove a file carefully, avoiding directories. 1915 */ 1916 int 1917 eunlink(const char *file) 1918 { 1919 struct stat st; 1920 1921 if (lstat(file, &st) == -1) 1922 return -1; 1923 1924 if (S_ISDIR(st.st_mode)) { 1925 errno = EISDIR; 1926 return -1; 1927 } 1928 return unlink(file); 1929 } 1930 1931 static void 1932 write_all(int fd, const void *data, size_t n) 1933 { 1934 const char *mem = data; 1935 1936 while (n > 0) { 1937 ssize_t written = write(fd, mem, n); 1938 if (written == -1 && errno == EAGAIN) 1939 continue; 1940 if (written == -1) 1941 break; 1942 mem += written; 1943 n -= (size_t)written; 1944 } 1945 } 1946 1947 /* 1948 * execDie -- 1949 * Print why exec failed, avoiding stdio. 1950 */ 1951 void MAKE_ATTR_DEAD 1952 execDie(const char *af, const char *av) 1953 { 1954 Buffer buf; 1955 1956 Buf_Init(&buf); 1957 Buf_AddStr(&buf, progname); 1958 Buf_AddStr(&buf, ": "); 1959 Buf_AddStr(&buf, af); 1960 Buf_AddStr(&buf, "("); 1961 Buf_AddStr(&buf, av); 1962 Buf_AddStr(&buf, ") failed ("); 1963 Buf_AddStr(&buf, strerror(errno)); 1964 Buf_AddStr(&buf, ")\n"); 1965 1966 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 1967 1968 Buf_Destroy(&buf, TRUE); 1969 _exit(1); 1970 } 1971 1972 /* 1973 * usage -- 1974 * exit with usage message 1975 */ 1976 static void 1977 usage(void) 1978 { 1979 char *p; 1980 if ((p = strchr(progname, '[')) != NULL) 1981 *p = '\0'; 1982 1983 (void)fprintf(stderr, 1984 "usage: %s [-BeikNnqrstWwX] \n" 1985 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1986 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1987 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1988 progname); 1989 exit(2); 1990 } 1991 1992 /* 1993 * realpath(3) can get expensive, cache results... 1994 */ 1995 static GNode *cached_realpaths = NULL; 1996 1997 static GNode * 1998 get_cached_realpaths(void) 1999 { 2000 2001 if (!cached_realpaths) { 2002 cached_realpaths = Targ_NewGN("Realpath"); 2003 #ifndef DEBUG_REALPATH_CACHE 2004 cached_realpaths->flags = INTERNAL; 2005 #endif 2006 } 2007 2008 return cached_realpaths; 2009 } 2010 2011 /* purge any relative paths */ 2012 static void 2013 purge_cached_realpaths(void) 2014 { 2015 GNode *cache = get_cached_realpaths(); 2016 HashEntry *he, *nhe; 2017 HashIter hi; 2018 2019 HashIter_Init(&hi, &cache->context); 2020 he = HashIter_Next(&hi); 2021 while (he != NULL) { 2022 nhe = HashIter_Next(&hi); 2023 if (he->key[0] != '/') { 2024 if (DEBUG(DIR)) 2025 fprintf(stderr, "cached_realpath: purging %s\n", he->key); 2026 HashTable_DeleteEntry(&cache->context, he); 2027 } 2028 he = nhe; 2029 } 2030 } 2031 2032 char * 2033 cached_realpath(const char *pathname, char *resolved) 2034 { 2035 GNode *cache; 2036 const char *rp; 2037 void *freeIt; 2038 2039 if (pathname == NULL || pathname[0] == '\0') 2040 return NULL; 2041 2042 cache = get_cached_realpaths(); 2043 2044 if ((rp = Var_Value(pathname, cache, &freeIt)) != NULL) { 2045 /* a hit */ 2046 strncpy(resolved, rp, MAXPATHLEN); 2047 resolved[MAXPATHLEN - 1] = '\0'; 2048 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2049 Var_Set(pathname, rp, cache); 2050 } /* else should we negative-cache? */ 2051 2052 bmake_free(freeIt); 2053 return rp ? resolved : 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 void 2097 PrintOnError(GNode *gn, const char *s) 2098 { 2099 static GNode *en = NULL; 2100 const char *expr; 2101 char *cp; 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 (s) 2113 printf("%s", s); 2114 2115 printf("\n%s: stopped in %s\n", progname, curdir); 2116 2117 if (en) 2118 return; /* we've been here! */ 2119 if (gn) 2120 SetErrorVars(gn); 2121 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2122 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2123 /* TODO: handle errors */ 2124 printf("%s", cp); 2125 free(cp); 2126 fflush(stdout); 2127 2128 /* 2129 * Finally, see if there is a .ERROR target, and run it if so. 2130 */ 2131 en = Targ_FindNode(".ERROR"); 2132 if (en) { 2133 en->type |= OP_SPECIAL; 2134 Compat_Make(en, en); 2135 } 2136 } 2137 2138 void 2139 Main_ExportMAKEFLAGS(Boolean first) 2140 { 2141 static Boolean once = TRUE; 2142 const char *expr; 2143 char *s; 2144 2145 if (once != first) 2146 return; 2147 once = FALSE; 2148 2149 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2150 (void)Var_Subst(expr, VAR_CMDLINE, VARE_WANTRES, &s); 2151 /* TODO: handle errors */ 2152 if (s[0] != '\0') { 2153 #ifdef POSIX 2154 setenv("MAKEFLAGS", s, 1); 2155 #else 2156 setenv("MAKE", s, 1); 2157 #endif 2158 } 2159 } 2160 2161 char * 2162 getTmpdir(void) 2163 { 2164 static char *tmpdir = NULL; 2165 2166 if (!tmpdir) { 2167 struct stat st; 2168 2169 /* 2170 * Honor $TMPDIR but only if it is valid. 2171 * Ensure it ends with /. 2172 */ 2173 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2174 VARE_WANTRES, &tmpdir); 2175 /* TODO: handle errors */ 2176 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2177 free(tmpdir); 2178 tmpdir = bmake_strdup(_PATH_TMP); 2179 } 2180 } 2181 return tmpdir; 2182 } 2183 2184 /* 2185 * Create and open a temp file using "pattern". 2186 * If out_fname is provided, set it to a copy of the filename created. 2187 * Otherwise unlink the file once open. 2188 */ 2189 int 2190 mkTempFile(const char *pattern, char **out_fname) 2191 { 2192 static char *tmpdir = NULL; 2193 char tfile[MAXPATHLEN]; 2194 int fd; 2195 2196 if (pattern == NULL) 2197 pattern = TMPPAT; 2198 if (tmpdir == NULL) 2199 tmpdir = getTmpdir(); 2200 if (pattern[0] == '/') { 2201 snprintf(tfile, sizeof tfile, "%s", pattern); 2202 } else { 2203 snprintf(tfile, sizeof tfile, "%s%s", tmpdir, pattern); 2204 } 2205 if ((fd = mkstemp(tfile)) < 0) 2206 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2207 if (out_fname) { 2208 *out_fname = bmake_strdup(tfile); 2209 } else { 2210 unlink(tfile); /* we just want the descriptor */ 2211 } 2212 return fd; 2213 } 2214 2215 /* 2216 * Convert a string representation of a boolean. 2217 * Anything that looks like "No", "False", "Off", "0" etc, 2218 * is FALSE, otherwise TRUE. 2219 */ 2220 Boolean 2221 ParseBoolean(const char *s, Boolean bf) 2222 { 2223 switch(s[0]) { 2224 case '\0': /* not set - the default wins */ 2225 break; 2226 case '0': 2227 case 'F': 2228 case 'f': 2229 case 'N': 2230 case 'n': 2231 return FALSE; 2232 case 'O': 2233 case 'o': 2234 return s[1] != 'F' && s[1] != 'f'; 2235 default: 2236 return TRUE; 2237 } 2238 return bf; 2239 } 2240
Indexes created Mon Sep 22 13:09:51 GMT 2025