main.c revision 1.458
1 /* $NetBSD: main.c,v 1.458 2020/11/13 19:45:24 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 1.458 2020/11/13 19:45:24 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 purge_cached_realpaths(void); 139 140 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 141 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 142 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 143 char *progname; /* the program name */ 144 char *makeDependfile; 145 pid_t myPid; 146 int makelevel; 147 148 Boolean forceJobs = FALSE; 149 static int errors = 0; 150 151 /* 152 * For compatibility with the POSIX version of MAKEFLAGS that includes 153 * all the options without '-', convert 'flags' to '-f -l -a -g -s'. 154 */ 155 static char * 156 explode(const char *flags) 157 { 158 size_t len; 159 char *nf, *st; 160 const char *f; 161 162 if (flags == NULL) 163 return NULL; 164 165 for (f = flags; *f; f++) 166 if (!ch_isalpha(*f)) 167 break; 168 169 if (*f) 170 return bmake_strdup(flags); 171 172 len = strlen(flags); 173 st = nf = bmake_malloc(len * 3 + 1); 174 while (*flags) { 175 *nf++ = '-'; 176 *nf++ = *flags++; 177 *nf++ = ' '; 178 } 179 *nf = '\0'; 180 return st; 181 } 182 183 /* 184 * usage -- 185 * exit with usage message 186 */ 187 MAKE_ATTR_DEAD static void 188 usage(void) 189 { 190 char *p; 191 if ((p = strchr(progname, '[')) != NULL) 192 *p = '\0'; 193 194 (void)fprintf(stderr, 195 "usage: %s [-BeikNnqrstWwX] \n" 196 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 197 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 198 " [-V variable] [-v variable] [variable=value] [target ...]\n", 199 progname); 200 exit(2); 201 } 202 203 static void 204 parse_debug_option_F(const char *modules) 205 { 206 const char *mode; 207 size_t len; 208 char *fname; 209 210 if (opts.debug_file != stdout && opts.debug_file != stderr) 211 fclose(opts.debug_file); 212 213 if (*modules == '+') { 214 modules++; 215 mode = "a"; 216 } else 217 mode = "w"; 218 219 if (strcmp(modules, "stdout") == 0) { 220 opts.debug_file = stdout; 221 return; 222 } 223 if (strcmp(modules, "stderr") == 0) { 224 opts.debug_file = stderr; 225 return; 226 } 227 228 len = strlen(modules); 229 fname = bmake_malloc(len + 20); 230 memcpy(fname, modules, len + 1); 231 232 /* Let the filename be modified by the pid */ 233 if (strcmp(fname + len - 3, ".%d") == 0) 234 snprintf(fname + len - 2, 20, "%d", getpid()); 235 236 opts.debug_file = fopen(fname, mode); 237 if (opts.debug_file == NULL) { 238 fprintf(stderr, "Cannot open debug file %s\n", 239 fname); 240 usage(); 241 } 242 free(fname); 243 } 244 245 static void 246 parse_debug_options(const char *argvalue) 247 { 248 const char *modules; 249 250 for (modules = argvalue; *modules; ++modules) { 251 switch (*modules) { 252 case '0': /* undocumented, only intended for tests */ 253 opts.debug = DEBUG_NONE; 254 break; 255 case 'A': 256 opts.debug = DEBUG_ALL; 257 break; 258 case 'a': 259 opts.debug |= DEBUG_ARCH; 260 break; 261 case 'C': 262 opts.debug |= DEBUG_CWD; 263 break; 264 case 'c': 265 opts.debug |= DEBUG_COND; 266 break; 267 case 'd': 268 opts.debug |= DEBUG_DIR; 269 break; 270 case 'e': 271 opts.debug |= DEBUG_ERROR; 272 break; 273 case 'f': 274 opts.debug |= DEBUG_FOR; 275 break; 276 case 'g': 277 if (modules[1] == '1') { 278 opts.debug |= DEBUG_GRAPH1; 279 ++modules; 280 } else if (modules[1] == '2') { 281 opts.debug |= DEBUG_GRAPH2; 282 ++modules; 283 } else if (modules[1] == '3') { 284 opts.debug |= DEBUG_GRAPH3; 285 ++modules; 286 } 287 break; 288 case 'h': 289 opts.debug |= DEBUG_HASH; 290 break; 291 case 'j': 292 opts.debug |= DEBUG_JOB; 293 break; 294 case 'L': 295 opts.lint = TRUE; 296 break; 297 case 'l': 298 opts.debug |= DEBUG_LOUD; 299 break; 300 case 'M': 301 opts.debug |= DEBUG_META; 302 break; 303 case 'm': 304 opts.debug |= DEBUG_MAKE; 305 break; 306 case 'n': 307 opts.debug |= DEBUG_SCRIPT; 308 break; 309 case 'p': 310 opts.debug |= DEBUG_PARSE; 311 break; 312 case 's': 313 opts.debug |= DEBUG_SUFF; 314 break; 315 case 't': 316 opts.debug |= DEBUG_TARG; 317 break; 318 case 'V': 319 opts.debugVflag = TRUE; 320 break; 321 case 'v': 322 opts.debug |= DEBUG_VAR; 323 break; 324 case 'x': 325 opts.debug |= DEBUG_SHELL; 326 break; 327 case 'F': 328 parse_debug_option_F(modules + 1); 329 goto debug_setbuf; 330 default: 331 (void)fprintf(stderr, 332 "%s: illegal argument to d option -- %c\n", 333 progname, *modules); 334 usage(); 335 } 336 } 337 338 debug_setbuf: 339 /* 340 * Make the debug_file unbuffered, and make 341 * stdout line buffered (unless debugfile == stdout). 342 */ 343 setvbuf(opts.debug_file, NULL, _IONBF, 0); 344 if (opts.debug_file != stdout) { 345 setvbuf(stdout, NULL, _IOLBF, 0); 346 } 347 } 348 349 /* 350 * does path contain any relative components 351 */ 352 static Boolean 353 is_relpath(const char *path) 354 { 355 const char *cp; 356 357 if (path[0] != '/') 358 return TRUE; 359 cp = path; 360 while ((cp = strstr(cp, "/.")) != NULL) { 361 cp += 2; 362 if (*cp == '.') 363 cp++; 364 if (cp[0] == '/' || cp[0] == '\0') 365 return TRUE; 366 } 367 return FALSE; 368 } 369 370 static void 371 MainParseArgChdir(const char *argvalue) 372 { 373 struct stat sa, sb; 374 375 if (chdir(argvalue) == -1) { 376 (void)fprintf(stderr, "%s: chdir %s: %s\n", 377 progname, argvalue, strerror(errno)); 378 exit(1); 379 } 380 if (getcwd(curdir, MAXPATHLEN) == NULL) { 381 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 382 exit(2); 383 } 384 if (!is_relpath(argvalue) && 385 stat(argvalue, &sa) != -1 && 386 stat(curdir, &sb) != -1 && 387 sa.st_ino == sb.st_ino && 388 sa.st_dev == sb.st_dev) 389 strncpy(curdir, argvalue, MAXPATHLEN); 390 ignorePWD = TRUE; 391 } 392 393 static void 394 MainParseArgJobsInternal(const char *argvalue) 395 { 396 char end; 397 if (sscanf(argvalue, "%d,%d%c", &jp_0, &jp_1, &end) != 2) { 398 (void)fprintf(stderr, 399 "%s: internal error -- J option malformed (%s)\n", 400 progname, argvalue); 401 usage(); 402 } 403 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 404 (fcntl(jp_1, F_GETFD, 0) < 0)) { 405 #if 0 406 (void)fprintf(stderr, 407 "%s: ###### warning -- J descriptors were closed!\n", 408 progname); 409 exit(2); 410 #endif 411 jp_0 = -1; 412 jp_1 = -1; 413 opts.compatMake = TRUE; 414 } else { 415 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 416 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 417 } 418 } 419 420 static void 421 MainParseArgJobs(const char *argvalue) 422 { 423 char *p; 424 425 forceJobs = TRUE; 426 opts.maxJobs = (int)strtol(argvalue, &p, 0); 427 if (*p != '\0' || opts.maxJobs < 1) { 428 (void)fprintf(stderr, 429 "%s: illegal argument to -j -- must be positive integer!\n", 430 progname); 431 exit(1); /* XXX: why not 2? */ 432 } 433 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 434 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 435 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 436 maxJobTokens = opts.maxJobs; 437 } 438 439 static void 440 MainParseArgSysInc(const char *argvalue) 441 { 442 /* look for magic parent directory search string */ 443 if (strncmp(".../", argvalue, 4) == 0) { 444 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 445 if (found_path == NULL) 446 return; 447 (void)Dir_AddDir(sysIncPath, found_path); 448 free(found_path); 449 } else { 450 (void)Dir_AddDir(sysIncPath, argvalue); 451 } 452 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 453 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 454 } 455 456 static Boolean 457 MainParseArg(char c, const char *argvalue) 458 { 459 switch (c) { 460 case '\0': 461 break; 462 case 'B': 463 opts.compatMake = TRUE; 464 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 465 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 466 break; 467 case 'C': 468 MainParseArgChdir(argvalue); 469 break; 470 case 'D': 471 if (argvalue[0] == '\0') return FALSE; 472 Var_Set(argvalue, "1", VAR_GLOBAL); 473 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 474 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 475 break; 476 case 'I': 477 Parse_AddIncludeDir(argvalue); 478 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 479 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 480 break; 481 case 'J': 482 MainParseArgJobsInternal(argvalue); 483 break; 484 case 'N': 485 opts.noExecute = TRUE; 486 opts.noRecursiveExecute = TRUE; 487 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 488 break; 489 case 'S': 490 opts.keepgoing = FALSE; 491 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 492 break; 493 case 'T': 494 tracefile = bmake_strdup(argvalue); 495 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 496 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 497 break; 498 case 'V': 499 case 'v': 500 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED; 501 Lst_Append(opts.variables, bmake_strdup(argvalue)); 502 /* XXX: Why always -V? */ 503 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 504 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 505 break; 506 case 'W': 507 opts.parseWarnFatal = TRUE; 508 /* XXX: why no Var_Append? */ 509 break; 510 case 'X': 511 opts.varNoExportEnv = TRUE; 512 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 513 break; 514 case 'd': 515 /* If '-d-opts' don't pass to children */ 516 if (argvalue[0] == '-') 517 argvalue++; 518 else { 519 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 520 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 521 } 522 parse_debug_options(argvalue); 523 break; 524 case 'e': 525 opts.checkEnvFirst = TRUE; 526 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 527 break; 528 case 'f': 529 Lst_Append(opts.makefiles, bmake_strdup(argvalue)); 530 break; 531 case 'i': 532 opts.ignoreErrors = TRUE; 533 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 534 break; 535 case 'j': 536 MainParseArgJobs(argvalue); 537 break; 538 case 'k': 539 opts.keepgoing = TRUE; 540 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 541 break; 542 case 'm': 543 MainParseArgSysInc(argvalue); 544 /* XXX: why no Var_Append? */ 545 break; 546 case 'n': 547 opts.noExecute = TRUE; 548 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 549 break; 550 case 'q': 551 opts.queryFlag = TRUE; 552 /* Kind of nonsensical, wot? */ 553 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 554 break; 555 case 'r': 556 opts.noBuiltins = TRUE; 557 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 558 break; 559 case 's': 560 opts.beSilent = TRUE; 561 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 562 break; 563 case 't': 564 opts.touchFlag = TRUE; 565 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 566 break; 567 case 'w': 568 opts.enterFlag = TRUE; 569 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 570 break; 571 default: 572 case '?': 573 usage(); 574 } 575 return TRUE; 576 } 577 578 /* Parse the given arguments. Called from main() and from 579 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 580 * 581 * The arguments must be treated as read-only and will be freed after the 582 * call. 583 * 584 * XXX: Deal with command line overriding .MAKEFLAGS in makefile */ 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]) 662 Punt("illegal (null) argument."); 663 if (*argv[1] == '-' && !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 /* Break a line of arguments into words and parse them. 677 * 678 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 679 * by main() when reading the MAKEFLAGS environment variable. */ 680 void 681 Main_ParseArgLine(const char *line) 682 { 683 Words words; 684 char *buf; 685 686 if (line == NULL) 687 return; 688 for (; *line == ' '; ++line) 689 continue; 690 if (line[0] == '\0') 691 return; 692 693 { 694 void *freeIt; 695 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &freeIt); 696 buf = str_concat3(argv0, " ", line); 697 free(freeIt); 698 } 699 700 words = Str_Words(buf, TRUE); 701 if (words.words == NULL) { 702 Error("Unterminated quoted string [%s]", buf); 703 free(buf); 704 return; 705 } 706 free(buf); 707 MainParseArgs((int)words.len, words.words); 708 709 Words_Free(words); 710 } 711 712 Boolean 713 Main_SetObjdir(Boolean writable, const char *fmt, ...) 714 { 715 struct stat sb; 716 char *path; 717 char buf[MAXPATHLEN + 1]; 718 char buf2[MAXPATHLEN + 1]; 719 Boolean rc = FALSE; 720 va_list ap; 721 722 va_start(ap, fmt); 723 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 724 va_end(ap); 725 726 if (path[0] != '/') { 727 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 728 path = buf2; 729 } 730 731 /* look for the directory and try to chdir there */ 732 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 733 if ((writable && access(path, W_OK) != 0) || 734 (chdir(path) != 0)) { 735 (void)fprintf(stderr, "make warning: %s: %s.\n", 736 path, strerror(errno)); 737 } else { 738 snprintf(objdir, sizeof objdir, "%s", path); 739 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 740 setenv("PWD", objdir, 1); 741 Dir_InitDot(); 742 purge_cached_realpaths(); 743 rc = TRUE; 744 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 745 enterFlagObj = TRUE; 746 } 747 } 748 749 return rc; 750 } 751 752 static Boolean 753 Main_SetVarObjdir(Boolean writable, const char *var, const char *suffix) 754 { 755 void *path_freeIt; 756 const char *path = Var_Value(var, VAR_CMDLINE, &path_freeIt); 757 const char *xpath; 758 char *xpath_freeIt; 759 760 if (path == NULL || path[0] == '\0') { 761 bmake_free(path_freeIt); 762 return FALSE; 763 } 764 765 /* expand variable substitutions */ 766 xpath = path; 767 xpath_freeIt = NULL; 768 if (strchr(path, '$') != 0) { 769 (void)Var_Subst(path, VAR_GLOBAL, VARE_WANTRES, &xpath_freeIt); 770 /* TODO: handle errors */ 771 xpath = xpath_freeIt; 772 } 773 774 (void)Main_SetObjdir(writable, "%s%s", xpath, suffix); 775 776 bmake_free(xpath_freeIt); 777 bmake_free(path_freeIt); 778 return TRUE; 779 } 780 781 int 782 str2Lst_Append(StringList *lp, char *str, const char *sep) 783 { 784 char *cp; 785 int n; 786 787 if (sep == NULL) 788 sep = " \t"; 789 790 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 791 Lst_Append(lp, cp); 792 n++; 793 } 794 return n; 795 } 796 797 #ifdef SIGINFO 798 /*ARGSUSED*/ 799 static void 800 siginfo(int signo MAKE_ATTR_UNUSED) 801 { 802 char dir[MAXPATHLEN]; 803 char str[2 * MAXPATHLEN]; 804 int len; 805 if (getcwd(dir, sizeof dir) == NULL) 806 return; 807 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 808 if (len > 0) 809 (void)write(STDERR_FILENO, str, (size_t)len); 810 } 811 #endif 812 813 /* 814 * Allow makefiles some control over the mode we run in. 815 */ 816 void 817 MakeMode(const char *mode) 818 { 819 char *mode_freeIt = NULL; 820 821 if (mode == NULL) { 822 (void)Var_Subst("${" MAKE_MODE ":tl}", 823 VAR_GLOBAL, VARE_WANTRES, &mode_freeIt); 824 /* TODO: handle errors */ 825 mode = mode_freeIt; 826 } 827 828 if (mode[0] != '\0') { 829 if (strstr(mode, "compat")) { 830 opts.compatMake = TRUE; 831 forceJobs = FALSE; 832 } 833 #if USE_META 834 if (strstr(mode, "meta")) 835 meta_mode_init(mode); 836 #endif 837 } 838 839 free(mode_freeIt); 840 } 841 842 static void 843 PrintVar(const char *varname, Boolean expandVars) 844 { 845 if (strchr(varname, '$')) { 846 char *evalue; 847 (void)Var_Subst(varname, VAR_GLOBAL, VARE_WANTRES, &evalue); 848 /* TODO: handle errors */ 849 printf("%s\n", evalue); 850 bmake_free(evalue); 851 852 } else if (expandVars) { 853 char *expr = str_concat3("${", varname, "}"); 854 char *evalue; 855 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &evalue); 856 /* TODO: handle errors */ 857 free(expr); 858 printf("%s\n", evalue); 859 bmake_free(evalue); 860 861 } else { 862 void *freeIt; 863 const char *value = Var_Value(varname, VAR_GLOBAL, &freeIt); 864 printf("%s\n", value ? value : ""); 865 bmake_free(freeIt); 866 } 867 } 868 869 /* 870 * Return a Boolean based on a variable. 871 * 872 * If the knob is not set, return the fallback. 873 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 874 * is FALSE, otherwise TRUE. 875 */ 876 static Boolean 877 GetBooleanVar(const char *varname, Boolean fallback) 878 { 879 char *expr = str_concat3("${", varname, ":U}"); 880 char *value; 881 Boolean res; 882 883 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 884 /* TODO: handle errors */ 885 res = ParseBoolean(value, fallback); 886 free(value); 887 free(expr); 888 return res; 889 } 890 891 static void 892 doPrintVars(void) 893 { 894 StringListNode *ln; 895 Boolean expandVars; 896 897 if (opts.printVars == PVM_EXPANDED) 898 expandVars = TRUE; 899 else if (opts.debugVflag) 900 expandVars = FALSE; 901 else 902 expandVars = GetBooleanVar(".MAKE.EXPAND_VARIABLES", FALSE); 903 904 for (ln = opts.variables->first; ln != NULL; ln = ln->next) { 905 const char *varname = ln->datum; 906 PrintVar(varname, expandVars); 907 } 908 } 909 910 static Boolean 911 runTargets(void) 912 { 913 GNodeList *targs; /* target nodes to create */ 914 Boolean outOfDate; /* FALSE if all targets up to date */ 915 916 /* 917 * Have now read the entire graph and need to make a list of 918 * targets to create. If none was given on the command line, 919 * we consult the parsing module to find the main target(s) 920 * to create. 921 */ 922 if (Lst_IsEmpty(opts.create)) 923 targs = Parse_MainName(); 924 else 925 targs = Targ_FindList(opts.create); 926 927 if (!opts.compatMake) { 928 /* 929 * Initialize job module before traversing the graph 930 * now that any .BEGIN and .END targets have been read. 931 * This is done only if the -q flag wasn't given 932 * (to prevent the .BEGIN from being executed should 933 * it exist). 934 */ 935 if (!opts.queryFlag) { 936 Job_Init(); 937 jobsRunning = TRUE; 938 } 939 940 /* Traverse the graph, checking on all the targets */ 941 outOfDate = Make_Run(targs); 942 } else { 943 /* 944 * Compat_Init will take care of creating all the 945 * targets as well as initializing the module. 946 */ 947 Compat_Run(targs); 948 outOfDate = FALSE; 949 } 950 Lst_Free(targs); 951 return outOfDate; 952 } 953 954 /* 955 * Set up the .TARGETS variable to contain the list of targets to be 956 * created. If none specified, make the variable empty -- the parser 957 * will fill the thing in with the default or .MAIN target. 958 */ 959 static void 960 InitVarTargets(void) 961 { 962 StringListNode *ln; 963 964 if (Lst_IsEmpty(opts.create)) { 965 Var_Set(".TARGETS", "", VAR_GLOBAL); 966 return; 967 } 968 969 for (ln = opts.create->first; ln != NULL; ln = ln->next) { 970 char *name = ln->datum; 971 Var_Append(".TARGETS", name, VAR_GLOBAL); 972 } 973 } 974 975 static void 976 InitRandom(void) 977 { 978 struct timeval tv; 979 980 gettimeofday(&tv, NULL); 981 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 982 } 983 984 static const char * 985 InitVarMachine(const struct utsname *utsname) 986 { 987 const char *machine = getenv("MACHINE"); 988 if (machine != NULL) 989 return machine; 990 991 #if defined(MAKE_NATIVE) 992 return utsname->machine; 993 #elif defined(MAKE_MACHINE) 994 return MAKE_MACHINE; 995 #else 996 return "unknown"; 997 #endif 998 } 999 1000 static const char * 1001 InitVarMachineArch(void) 1002 { 1003 const char *env = getenv("MACHINE_ARCH"); 1004 if (env != NULL) 1005 return env; 1006 1007 #ifdef MAKE_NATIVE 1008 { 1009 struct utsname utsname; 1010 static char machine_arch_buf[sizeof utsname.machine]; 1011 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1012 size_t len = sizeof machine_arch_buf; 1013 1014 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1015 &len, NULL, 0) < 0) { 1016 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1017 strerror(errno)); 1018 exit(2); 1019 } 1020 1021 return machine_arch_buf; 1022 } 1023 #elif defined(MACHINE_ARCH) 1024 return MACHINE_ARCH; 1025 #elif defined(MAKE_MACHINE_ARCH) 1026 return MAKE_MACHINE_ARCH; 1027 #else 1028 return "unknown"; 1029 #endif 1030 } 1031 1032 #ifndef NO_PWD_OVERRIDE 1033 /* 1034 * All this code is so that we know where we are when we start up 1035 * on a different machine with pmake. 1036 * 1037 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1038 * since the value of curdir can vary depending on how we got 1039 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1040 * or via subdir.mk in which case its likely a shell which does 1041 * not provide it. 1042 * 1043 * So, to stop it breaking this case only, we ignore PWD if 1044 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1045 */ 1046 static void 1047 HandlePWD(const struct stat *curdir_st) 1048 { 1049 char *pwd; 1050 void *prefix_freeIt, *makeobjdir_freeIt; 1051 const char *makeobjdir; 1052 struct stat pwd_st; 1053 1054 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1055 return; 1056 1057 if (Var_Value("MAKEOBJDIRPREFIX", VAR_CMDLINE, &prefix_freeIt) != 1058 NULL) { 1059 bmake_free(prefix_freeIt); 1060 return; 1061 } 1062 1063 makeobjdir = Var_Value("MAKEOBJDIR", VAR_CMDLINE, &makeobjdir_freeIt); 1064 if (makeobjdir != NULL && strchr(makeobjdir, '$') != 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 bmake_free(makeobjdir_freeIt); 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_InitDir(curdir); 1092 writable = GetBooleanVar("MAKE_OBJDIR_CHECK_WRITABLE", TRUE); 1093 (void)Main_SetObjdir(FALSE, "%s", curdir); 1094 1095 if (!Main_SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1096 !Main_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; /* No compat mode */ 1121 opts.debug = 0; /* No debug verbosity, please. */ 1122 /* opts.debug_file has been initialized earlier */ 1123 opts.lint = FALSE; 1124 opts.debugVflag = FALSE; 1125 opts.checkEnvFirst = FALSE; 1126 opts.makefiles = Lst_New(); 1127 opts.ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1128 opts.maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 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; /* This is not just a check-run */ 1133 opts.noBuiltins = FALSE; /* Read the built-in rules */ 1134 opts.beSilent = FALSE; /* Print commands as executed */ 1135 opts.touchFlag = FALSE; /* Actually update targets */ 1136 opts.printVars = PVM_NONE; 1137 opts.variables = Lst_New(); 1138 opts.parseWarnFatal = FALSE; 1139 opts.enterFlag = FALSE; 1140 opts.varNoExportEnv = FALSE; 1141 opts.create = Lst_New(); 1142 } 1143 1144 /* Initialize MAKE and .MAKE to the path of the executable, so that it can be 1145 * found by execvp(3) and the shells, even after a chdir. 1146 * 1147 * If it's a relative path and contains a '/', resolve it to an absolute path. 1148 * Otherwise keep it as is, assuming it will be found in the PATH. */ 1149 static void 1150 InitVarMake(const char *argv0) 1151 { 1152 const char *make = argv0; 1153 1154 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1155 char pathbuf[MAXPATHLEN]; 1156 const char *abs = cached_realpath(argv0, pathbuf); 1157 struct stat st; 1158 if (abs != NULL && abs[0] == '/' && stat(make, &st) == 0) 1159 make = abs; 1160 } 1161 1162 Var_Set("MAKE", make, VAR_GLOBAL); 1163 Var_Set(".MAKE", make, VAR_GLOBAL); 1164 } 1165 1166 /* Add the directories from the colon-separated syspath to defSysIncPath. 1167 * After returning, the contents of syspath is unspecified. */ 1168 static void 1169 InitDefSysIncPath(char *syspath) 1170 { 1171 static char defsyspath[] = _PATH_DEFSYSPATH; 1172 char *start, *cp; 1173 1174 /* 1175 * If no user-supplied system path was given (through the -m option) 1176 * add the directories from the DEFSYSPATH (more than one may be given 1177 * as dir1:...:dirn) to the system include path. 1178 */ 1179 if (syspath == NULL || syspath[0] == '\0') 1180 syspath = defsyspath; 1181 else 1182 syspath = bmake_strdup(syspath); 1183 1184 for (start = syspath; *start != '\0'; start = cp) { 1185 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1186 continue; 1187 if (*cp == ':') 1188 *cp++ = '\0'; 1189 1190 /* look for magic parent directory search string */ 1191 if (strncmp(".../", start, 4) != 0) { 1192 (void)Dir_AddDir(defSysIncPath, start); 1193 } else { 1194 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1195 if (dir != NULL) { 1196 (void)Dir_AddDir(defSysIncPath, dir); 1197 free(dir); 1198 } 1199 } 1200 } 1201 1202 if (syspath != defsyspath) 1203 free(syspath); 1204 } 1205 1206 static void 1207 ReadBuiltinRules(void) 1208 { 1209 StringListNode *ln; 1210 StringList *sysMkPath = Lst_New(); 1211 1212 Dir_Expand(_PATH_DEFSYSMK, 1213 Lst_IsEmpty(sysIncPath) ? defSysIncPath : sysIncPath, 1214 sysMkPath); 1215 if (Lst_IsEmpty(sysMkPath)) 1216 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1217 1218 for (ln = sysMkPath->first; ln != NULL; ln = ln->next) 1219 if (ReadMakefile(ln->datum) == 0) 1220 break; 1221 1222 if (ln == NULL) 1223 Fatal("%s: cannot open %s.", 1224 progname, (const char *)sysMkPath->first->datum); 1225 1226 /* Free the list but not the actual filenames since these may still 1227 * be used in GNodes. */ 1228 Lst_Free(sysMkPath); 1229 } 1230 1231 static void 1232 InitMaxJobs(void) 1233 { 1234 char *value; 1235 int n; 1236 1237 if (forceJobs || opts.compatMake || 1238 !Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) 1239 return; 1240 1241 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1242 /* TODO: handle errors */ 1243 n = (int)strtol(value, NULL, 0); 1244 if (n < 1) { 1245 (void)fprintf(stderr, 1246 "%s: illegal value for .MAKE.JOBS " 1247 "-- must be positive integer!\n", 1248 progname); 1249 exit(1); 1250 } 1251 1252 if (n != opts.maxJobs) { 1253 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1254 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1255 } 1256 1257 opts.maxJobs = n; 1258 maxJobTokens = opts.maxJobs; 1259 forceJobs = TRUE; 1260 free(value); 1261 } 1262 1263 /* 1264 * For compatibility, look at the directories in the VPATH variable 1265 * and add them to the search path, if the variable is defined. The 1266 * variable's value is in the same format as the PATH environment 1267 * variable, i.e. <directory>:<directory>:<directory>... 1268 */ 1269 static void 1270 InitVpath(void) 1271 { 1272 char *vpath, savec, *path; 1273 if (!Var_Exists("VPATH", VAR_CMDLINE)) 1274 return; 1275 1276 (void)Var_Subst("${VPATH}", VAR_CMDLINE, VARE_WANTRES, &vpath); 1277 /* TODO: handle errors */ 1278 path = vpath; 1279 do { 1280 char *cp; 1281 /* skip to end of directory */ 1282 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1283 continue; 1284 /* Save terminator character so know when to stop */ 1285 savec = *cp; 1286 *cp = '\0'; 1287 /* Add directory to search path */ 1288 (void)Dir_AddDir(dirSearchPath, path); 1289 *cp = savec; 1290 path = cp + 1; 1291 } while (savec == ':'); 1292 free(vpath); 1293 } 1294 1295 static void 1296 ReadAllMakefiles(StringList *makefiles) 1297 { 1298 StringListNode *ln; 1299 1300 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1301 const char *fname = ln->datum; 1302 if (ReadMakefile(fname) != 0) 1303 Fatal("%s: cannot open %s.", progname, fname); 1304 } 1305 } 1306 1307 static void 1308 ReadFirstDefaultMakefile(void) 1309 { 1310 StringListNode *ln; 1311 char *prefs; 1312 1313 (void)Var_Subst("${" MAKE_MAKEFILE_PREFERENCE "}", 1314 VAR_CMDLINE, VARE_WANTRES, &prefs); 1315 /* TODO: handle errors */ 1316 1317 /* XXX: This should use a local list instead of opts.makefiles 1318 * since these makefiles do not come from the command line. They 1319 * also have different semantics in that only the first file that 1320 * is found is processed. See ReadAllMakefiles. */ 1321 (void)str2Lst_Append(opts.makefiles, prefs, NULL); 1322 1323 for (ln = opts.makefiles->first; ln != NULL; ln = ln->next) 1324 if (ReadMakefile(ln->datum) == 0) 1325 break; 1326 1327 free(prefs); 1328 } 1329 1330 /* Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1331 * Initialize a few modules. 1332 * Parse the arguments from MAKEFLAGS and the command line. */ 1333 static void 1334 main_Init(int argc, char **argv) 1335 { 1336 struct stat sa; 1337 const char *machine; 1338 const char *machine_arch; 1339 char *syspath = getenv("MAKESYSPATH"); 1340 struct utsname utsname; 1341 1342 /* default to writing debug to stderr */ 1343 opts.debug_file = stderr; 1344 1345 #ifdef SIGINFO 1346 (void)bmake_signal(SIGINFO, siginfo); 1347 #endif 1348 1349 InitRandom(); 1350 1351 if ((progname = strrchr(argv[0], '/')) != NULL) 1352 progname++; 1353 else 1354 progname = argv[0]; 1355 1356 UnlimitFiles(); 1357 1358 if (uname(&utsname) == -1) { 1359 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1360 strerror(errno)); 1361 exit(2); 1362 } 1363 1364 /* 1365 * Get the name of this type of MACHINE from utsname 1366 * so we can share an executable for similar machines. 1367 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1368 * 1369 * Note that both MACHINE and MACHINE_ARCH are decided at 1370 * run-time. 1371 */ 1372 machine = InitVarMachine(&utsname); 1373 machine_arch = InitVarMachineArch(); 1374 1375 myPid = getpid(); /* remember this for vFork() */ 1376 1377 /* 1378 * Just in case MAKEOBJDIR wants us to do something tricky. 1379 */ 1380 Var_Init(); /* Initialize the lists of variables for 1381 * parsing arguments */ 1382 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1383 Var_Set("MACHINE", machine, VAR_GLOBAL); 1384 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1385 #ifdef MAKE_VERSION 1386 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1387 #endif 1388 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1389 /* 1390 * This is the traditional preference for makefiles. 1391 */ 1392 #ifndef MAKEFILE_PREFERENCE_LIST 1393 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1394 #endif 1395 Var_Set(MAKE_MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, VAR_GLOBAL); 1396 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1397 1398 CmdOpts_Init(); 1399 allPrecious = FALSE; /* Remove targets when interrupted */ 1400 deleteOnError = FALSE; /* Historical default behavior */ 1401 jobsRunning = FALSE; 1402 1403 maxJobTokens = opts.maxJobs; 1404 ignorePWD = FALSE; 1405 1406 /* 1407 * Initialize the parsing, directory and variable modules to prepare 1408 * for the reading of inclusion paths and variable settings on the 1409 * command line 1410 */ 1411 1412 /* 1413 * Initialize various variables. 1414 * MAKE also gets this name, for compatibility 1415 * .MAKEFLAGS gets set to the empty string just in case. 1416 * MFLAGS also gets initialized empty, for compatibility. 1417 */ 1418 Parse_Init(); 1419 InitVarMake(argv[0]); 1420 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1421 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1422 Var_Set("MFLAGS", "", VAR_GLOBAL); 1423 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1424 /* some makefiles need to know this */ 1425 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMDLINE); 1426 1427 /* Set some other useful variables. */ 1428 { 1429 char tmp[64], *ep = getenv(MAKE_LEVEL_ENV); 1430 1431 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1432 if (makelevel < 0) 1433 makelevel = 0; 1434 snprintf(tmp, sizeof tmp, "%d", makelevel); 1435 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1436 snprintf(tmp, sizeof tmp, "%u", myPid); 1437 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1438 snprintf(tmp, sizeof tmp, "%u", getppid()); 1439 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1440 } 1441 if (makelevel > 0) { 1442 char pn[1024]; 1443 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1444 progname = bmake_strdup(pn); 1445 } 1446 1447 #ifdef USE_META 1448 meta_init(); 1449 #endif 1450 Dir_Init(); 1451 1452 /* 1453 * First snag any flags out of the MAKE environment variable. 1454 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1455 * in a different format). 1456 */ 1457 #ifdef POSIX 1458 { 1459 char *p1 = explode(getenv("MAKEFLAGS")); 1460 Main_ParseArgLine(p1); 1461 free(p1); 1462 } 1463 #else 1464 Main_ParseArgLine(getenv("MAKE")); 1465 #endif 1466 1467 /* 1468 * Find where we are (now). 1469 * We take care of PWD for the automounter below... 1470 */ 1471 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1472 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1473 progname, strerror(errno)); 1474 exit(2); 1475 } 1476 1477 MainParseArgs(argc, argv); 1478 1479 if (opts.enterFlag) 1480 printf("%s: Entering directory `%s'\n", progname, curdir); 1481 1482 /* 1483 * Verify that cwd is sane. 1484 */ 1485 if (stat(curdir, &sa) == -1) { 1486 (void)fprintf(stderr, "%s: %s: %s.\n", 1487 progname, curdir, strerror(errno)); 1488 exit(2); 1489 } 1490 1491 #ifndef NO_PWD_OVERRIDE 1492 HandlePWD(&sa); 1493 #endif 1494 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1495 1496 InitObjdir(machine, machine_arch); 1497 1498 /* 1499 * Initialize archive, target and suffix modules in preparation for 1500 * parsing the makefile(s) 1501 */ 1502 Arch_Init(); 1503 Targ_Init(); 1504 Suff_Init(); 1505 Trace_Init(tracefile); 1506 1507 DEFAULT = NULL; 1508 (void)time(&now); 1509 1510 Trace_Log(MAKESTART, NULL); 1511 1512 InitVarTargets(); 1513 1514 InitDefSysIncPath(syspath); 1515 } 1516 1517 /* Read the system makefile followed by either makefile, Makefile or the 1518 * files given by the -f option. Exit on parse errors. */ 1519 static void 1520 main_ReadFiles(void) 1521 { 1522 1523 if (!opts.noBuiltins) 1524 ReadBuiltinRules(); 1525 1526 if (!Lst_IsEmpty(opts.makefiles)) 1527 ReadAllMakefiles(opts.makefiles); 1528 else 1529 ReadFirstDefaultMakefile(); 1530 } 1531 1532 /* Compute the dependency graph. */ 1533 static void 1534 main_PrepareMaking(void) 1535 { 1536 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1537 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1538 /* ignore /dev/null and anything starting with "no" */ 1539 (void)Var_Subst("${.MAKE.DEPENDFILE:N/dev/null:Nno*:T}", 1540 VAR_CMDLINE, VARE_WANTRES, &makeDependfile); 1541 if (makeDependfile[0] != '\0') { 1542 /* TODO: handle errors */ 1543 doing_depend = TRUE; 1544 (void)ReadMakefile(makeDependfile); 1545 doing_depend = FALSE; 1546 } 1547 } 1548 1549 if (enterFlagObj) 1550 printf("%s: Entering directory `%s'\n", progname, objdir); 1551 1552 MakeMode(NULL); 1553 1554 { 1555 void *freeIt; 1556 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &freeIt), 1557 VAR_GLOBAL); 1558 bmake_free(freeIt); 1559 } 1560 1561 InitMaxJobs(); 1562 1563 /* 1564 * Be compatible if the user did not specify -j and did not explicitly 1565 * turn compatibility on. 1566 */ 1567 if (!opts.compatMake && !forceJobs) 1568 opts.compatMake = TRUE; 1569 1570 if (!opts.compatMake) 1571 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1572 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1573 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1574 1575 if (opts.printVars == PVM_NONE) 1576 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1577 1578 InitVpath(); 1579 1580 /* 1581 * Now that all search paths have been read for suffixes et al, it's 1582 * time to add the default search path to their lists... 1583 */ 1584 Suff_DoPaths(); 1585 1586 /* 1587 * Propagate attributes through :: dependency lists. 1588 */ 1589 Targ_Propagate(); 1590 1591 /* print the initial graph, if the user requested it */ 1592 if (DEBUG(GRAPH1)) 1593 Targ_PrintGraph(1); 1594 } 1595 1596 /* Make the targets. 1597 * If the -v or -V options are given, print variables instead. 1598 * Return whether the targets are out-of-date. */ 1599 static Boolean 1600 main_Run(void) 1601 { 1602 /* print the values of any variables requested by the user */ 1603 if (opts.printVars != PVM_NONE) { 1604 doPrintVars(); 1605 return FALSE; 1606 } else { 1607 return runTargets(); 1608 } 1609 } 1610 1611 /* Clean up after making the targets. */ 1612 static void 1613 main_CleanUp(void) 1614 { 1615 #ifdef CLEANUP 1616 Lst_Destroy(opts.variables, free); 1617 Lst_Free(opts.makefiles); /* don't free, may be used in GNodes */ 1618 Lst_Destroy(opts.create, free); 1619 #endif 1620 1621 /* print the graph now it's been processed if the user requested it */ 1622 if (DEBUG(GRAPH2)) 1623 Targ_PrintGraph(2); 1624 1625 Trace_Log(MAKEEND, NULL); 1626 1627 if (enterFlagObj) 1628 printf("%s: Leaving directory `%s'\n", progname, objdir); 1629 if (opts.enterFlag) 1630 printf("%s: Leaving directory `%s'\n", progname, curdir); 1631 1632 #ifdef USE_META 1633 meta_finish(); 1634 #endif 1635 Suff_End(); 1636 Targ_End(); 1637 Arch_End(); 1638 Var_End(); 1639 Parse_End(); 1640 Dir_End(); 1641 Job_End(); 1642 Trace_End(); 1643 } 1644 1645 /* Determine the exit code. */ 1646 static int 1647 main_Exit(Boolean outOfDate) 1648 { 1649 if (opts.lint && (errors > 0 || Parse_GetFatals() > 0)) 1650 return 2; /* Not 1 so -q can distinguish error */ 1651 return outOfDate ? 1 : 0; 1652 } 1653 1654 int 1655 main(int argc, char **argv) 1656 { 1657 Boolean outOfDate; 1658 1659 main_Init(argc, argv); 1660 main_ReadFiles(); 1661 main_PrepareMaking(); 1662 outOfDate = main_Run(); 1663 main_CleanUp(); 1664 return main_Exit(outOfDate); 1665 } 1666 1667 /* Open and parse the given makefile, with all its side effects. 1668 * 1669 * Results: 1670 * 0 if ok. -1 if couldn't open file. 1671 */ 1672 static int 1673 ReadMakefile(const char *fname) 1674 { 1675 int fd; 1676 char *name, *path = NULL; 1677 1678 if (strcmp(fname, "-") == 0) { 1679 Parse_File(NULL /*stdin*/, -1); 1680 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1681 } else { 1682 /* if we've chdir'd, rebuild the path name */ 1683 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1684 path = str_concat3(curdir, "/", fname); 1685 fd = open(path, O_RDONLY); 1686 if (fd != -1) { 1687 fname = path; 1688 goto found; 1689 } 1690 free(path); 1691 1692 /* If curdir failed, try objdir (ala .depend) */ 1693 path = str_concat3(objdir, "/", fname); 1694 fd = open(path, O_RDONLY); 1695 if (fd != -1) { 1696 fname = path; 1697 goto found; 1698 } 1699 } else { 1700 fd = open(fname, O_RDONLY); 1701 if (fd != -1) 1702 goto found; 1703 } 1704 /* look in -I and system include directories. */ 1705 name = Dir_FindFile(fname, parseIncPath); 1706 if (name == NULL) { 1707 SearchPath *sysInc = Lst_IsEmpty(sysIncPath) 1708 ? defSysIncPath : sysIncPath; 1709 name = Dir_FindFile(fname, sysInc); 1710 } 1711 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1712 free(name); 1713 free(path); 1714 return -1; 1715 } 1716 fname = name; 1717 /* 1718 * set the MAKEFILE variable desired by System V fans -- the 1719 * placement of the setting here means it gets set to the last 1720 * makefile specified, as it is set by SysV make. 1721 */ 1722 found: 1723 if (!doing_depend) 1724 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1725 Parse_File(fname, fd); 1726 } 1727 free(path); 1728 return 0; 1729 } 1730 1731 /*- 1732 * Cmd_Exec -- 1733 * Execute the command in cmd, and return the output of that command 1734 * in a string. In the output, newlines are replaced with spaces. 1735 * 1736 * Results: 1737 * A string containing the output of the command, or the empty string. 1738 * *errfmt returns a format string describing the command failure, 1739 * if any, using a single %s conversion specification. 1740 * 1741 * Side Effects: 1742 * The string must be freed by the caller. 1743 */ 1744 char * 1745 Cmd_Exec(const char *cmd, const char **errfmt) 1746 { 1747 const char *args[4]; /* Args for invoking the shell */ 1748 int fds[2]; /* Pipe streams */ 1749 int cpid; /* Child PID */ 1750 int pid; /* PID from wait() */ 1751 int status; /* command exit status */ 1752 Buffer buf; /* buffer to store the result */ 1753 ssize_t bytes_read; 1754 char *res; /* result */ 1755 size_t res_len; 1756 char *cp; 1757 int savederr; /* saved errno */ 1758 1759 *errfmt = NULL; 1760 1761 if (!shellName) 1762 Shell_Init(); 1763 /* 1764 * Set up arguments for shell 1765 */ 1766 args[0] = shellName; 1767 args[1] = "-c"; 1768 args[2] = cmd; 1769 args[3] = NULL; 1770 1771 /* 1772 * Open a pipe for fetching its output 1773 */ 1774 if (pipe(fds) == -1) { 1775 *errfmt = "Couldn't create pipe for \"%s\""; 1776 goto bad; 1777 } 1778 1779 /* 1780 * Fork 1781 */ 1782 switch (cpid = vFork()) { 1783 case 0: 1784 (void)close(fds[0]); /* Close input side of pipe */ 1785 1786 /* 1787 * Duplicate the output stream to the shell's output, then 1788 * shut the extra thing down. Note we don't fetch the error 1789 * stream...why not? Why? 1790 */ 1791 (void)dup2(fds[1], 1); 1792 (void)close(fds[1]); 1793 1794 Var_ExportVars(); 1795 1796 (void)execv(shellPath, UNCONST(args)); 1797 _exit(1); 1798 /*NOTREACHED*/ 1799 1800 case -1: 1801 *errfmt = "Couldn't exec \"%s\""; 1802 goto bad; 1803 1804 default: 1805 (void)close(fds[1]); /* No need for the writing half */ 1806 1807 savederr = 0; 1808 Buf_Init(&buf); 1809 1810 do { 1811 char result[BUFSIZ]; 1812 bytes_read = read(fds[0], result, sizeof result); 1813 if (bytes_read > 0) 1814 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1815 } while (bytes_read > 0 || 1816 (bytes_read == -1 && errno == EINTR)); 1817 if (bytes_read == -1) 1818 savederr = errno; 1819 1820 (void)close( 1821 fds[0]); /* Close the input side of the pipe. */ 1822 1823 /* Wait for the process to exit. */ 1824 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1825 JobReapChild(pid, status, FALSE); 1826 1827 res_len = Buf_Len(&buf); 1828 res = Buf_Destroy(&buf, FALSE); 1829 1830 if (savederr != 0) 1831 *errfmt = "Couldn't read shell's output for \"%s\""; 1832 1833 if (WIFSIGNALED(status)) 1834 *errfmt = "\"%s\" exited on a signal"; 1835 else if (WEXITSTATUS(status) != 0) 1836 *errfmt = "\"%s\" returned non-zero status"; 1837 1838 /* Convert newlines to spaces. A final newline is just stripped */ 1839 if (res_len > 0 && res[res_len - 1] == '\n') 1840 res[res_len - 1] = '\0'; 1841 for (cp = res; *cp != '\0'; cp++) 1842 if (*cp == '\n') 1843 *cp = ' '; 1844 break; 1845 } 1846 return res; 1847 bad: 1848 return bmake_strdup(""); 1849 } 1850 1851 /* Print a printf-style error message. 1852 * 1853 * In default mode, this error message has no consequences, in particular it 1854 * does not affect the exit status. Only in lint mode (-dL) it does. */ 1855 void 1856 Error(const char *fmt, ...) 1857 { 1858 va_list ap; 1859 FILE *err_file; 1860 1861 err_file = opts.debug_file; 1862 if (err_file == stdout) 1863 err_file = stderr; 1864 (void)fflush(stdout); 1865 for (;;) { 1866 va_start(ap, fmt); 1867 fprintf(err_file, "%s: ", progname); 1868 (void)vfprintf(err_file, fmt, ap); 1869 va_end(ap); 1870 (void)fprintf(err_file, "\n"); 1871 (void)fflush(err_file); 1872 if (err_file == stderr) 1873 break; 1874 err_file = stderr; 1875 } 1876 errors++; 1877 } 1878 1879 /* Produce a Fatal error message, then exit immediately. 1880 * 1881 * If jobs are running, wait for them to finish. */ 1882 void 1883 Fatal(const char *fmt, ...) 1884 { 1885 va_list ap; 1886 1887 va_start(ap, fmt); 1888 if (jobsRunning) 1889 Job_Wait(); 1890 1891 (void)fflush(stdout); 1892 (void)vfprintf(stderr, fmt, ap); 1893 va_end(ap); 1894 (void)fprintf(stderr, "\n"); 1895 (void)fflush(stderr); 1896 1897 PrintOnError(NULL, NULL); 1898 1899 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1900 Targ_PrintGraph(2); 1901 Trace_Log(MAKEERROR, NULL); 1902 exit(2); /* Not 1 so -q can distinguish error */ 1903 } 1904 1905 /* Major exception once jobs are being created. 1906 * Kills all jobs, prints a message and exits. */ 1907 void 1908 Punt(const char *fmt, ...) 1909 { 1910 va_list ap; 1911 1912 va_start(ap, fmt); 1913 (void)fflush(stdout); 1914 (void)fprintf(stderr, "%s: ", progname); 1915 (void)vfprintf(stderr, fmt, ap); 1916 va_end(ap); 1917 (void)fprintf(stderr, "\n"); 1918 (void)fflush(stderr); 1919 1920 PrintOnError(NULL, NULL); 1921 1922 DieHorribly(); 1923 } 1924 1925 /* Exit without giving a message. */ 1926 void 1927 DieHorribly(void) 1928 { 1929 if (jobsRunning) 1930 Job_AbortAll(); 1931 if (DEBUG(GRAPH2)) 1932 Targ_PrintGraph(2); 1933 Trace_Log(MAKEERROR, NULL); 1934 exit(2); /* Not 1, so -q can distinguish error */ 1935 } 1936 1937 /* Called when aborting due to errors in child shell to signal abnormal exit. 1938 * The program exits. 1939 * Errors is the number of errors encountered in Make_Make. */ 1940 void 1941 Finish(int errs) 1942 { 1943 if (shouldDieQuietly(NULL, -1)) 1944 exit(2); 1945 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1946 } 1947 1948 /* 1949 * eunlink -- 1950 * Remove a file carefully, avoiding directories. 1951 */ 1952 int 1953 eunlink(const char *file) 1954 { 1955 struct stat st; 1956 1957 if (lstat(file, &st) == -1) 1958 return -1; 1959 1960 if (S_ISDIR(st.st_mode)) { 1961 errno = EISDIR; 1962 return -1; 1963 } 1964 return unlink(file); 1965 } 1966 1967 static void 1968 write_all(int fd, const void *data, size_t n) 1969 { 1970 const char *mem = data; 1971 1972 while (n > 0) { 1973 ssize_t written = write(fd, mem, n); 1974 if (written == -1 && errno == EAGAIN) 1975 continue; 1976 if (written == -1) 1977 break; 1978 mem += written; 1979 n -= (size_t)written; 1980 } 1981 } 1982 1983 /* 1984 * execDie -- 1985 * Print why exec failed, avoiding stdio. 1986 */ 1987 void MAKE_ATTR_DEAD 1988 execDie(const char *af, const char *av) 1989 { 1990 Buffer buf; 1991 1992 Buf_Init(&buf); 1993 Buf_AddStr(&buf, progname); 1994 Buf_AddStr(&buf, ": "); 1995 Buf_AddStr(&buf, af); 1996 Buf_AddStr(&buf, "("); 1997 Buf_AddStr(&buf, av); 1998 Buf_AddStr(&buf, ") failed ("); 1999 Buf_AddStr(&buf, strerror(errno)); 2000 Buf_AddStr(&buf, ")\n"); 2001 2002 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 2003 2004 Buf_Destroy(&buf, TRUE); 2005 _exit(1); 2006 } 2007 2008 /* 2009 * realpath(3) can get expensive, cache results... 2010 */ 2011 static GNode *cached_realpaths = NULL; 2012 2013 static GNode * 2014 get_cached_realpaths(void) 2015 { 2016 2017 if (cached_realpaths == NULL) { 2018 cached_realpaths = Targ_NewGN("Realpath"); 2019 #ifndef DEBUG_REALPATH_CACHE 2020 cached_realpaths->flags = INTERNAL; 2021 #endif 2022 } 2023 2024 return cached_realpaths; 2025 } 2026 2027 /* purge any relative paths */ 2028 static void 2029 purge_cached_realpaths(void) 2030 { 2031 GNode *cache = get_cached_realpaths(); 2032 HashEntry *he, *nhe; 2033 HashIter hi; 2034 2035 HashIter_Init(&hi, &cache->context); 2036 he = HashIter_Next(&hi); 2037 while (he != NULL) { 2038 nhe = HashIter_Next(&hi); 2039 if (he->key[0] != '/') { 2040 if (DEBUG(DIR)) 2041 fprintf(stderr, "cached_realpath: purging %s\n", 2042 he->key); 2043 HashTable_DeleteEntry(&cache->context, he); 2044 } 2045 he = nhe; 2046 } 2047 } 2048 2049 char * 2050 cached_realpath(const char *pathname, char *resolved) 2051 { 2052 GNode *cache; 2053 const char *rp; 2054 void *freeIt; 2055 2056 if (pathname == NULL || pathname[0] == '\0') 2057 return NULL; 2058 2059 cache = get_cached_realpaths(); 2060 2061 if ((rp = Var_Value(pathname, cache, &freeIt)) != NULL) { 2062 /* a hit */ 2063 strncpy(resolved, rp, MAXPATHLEN); 2064 resolved[MAXPATHLEN - 1] = '\0'; 2065 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2066 Var_Set(pathname, rp, cache); 2067 } /* else should we negative-cache? */ 2068 2069 bmake_free(freeIt); 2070 return rp ? resolved : NULL; 2071 } 2072 2073 /* 2074 * Return true if we should die without noise. 2075 * For example our failing child was a sub-make or failure happened elsewhere. 2076 */ 2077 Boolean 2078 shouldDieQuietly(GNode *gn, int bf) 2079 { 2080 static int quietly = -1; 2081 2082 if (quietly < 0) { 2083 if (DEBUG(JOB) || !GetBooleanVar(".MAKE.DIE_QUIETLY", TRUE)) 2084 quietly = 0; 2085 else if (bf >= 0) 2086 quietly = bf; 2087 else 2088 quietly = gn != NULL && (gn->type & OP_MAKE); 2089 } 2090 return quietly; 2091 } 2092 2093 static void 2094 SetErrorVars(GNode *gn) 2095 { 2096 StringListNode *ln; 2097 2098 /* 2099 * We can print this even if there is no .ERROR target. 2100 */ 2101 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2102 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2103 2104 for (ln = gn->commands->first; ln != NULL; ln = ln->next) { 2105 const char *cmd = ln->datum; 2106 2107 if (cmd == NULL) 2108 break; 2109 Var_Append(".ERROR_CMD", cmd, VAR_GLOBAL); 2110 } 2111 } 2112 2113 void 2114 PrintOnError(GNode *gn, const char *s) 2115 { 2116 static GNode *en = NULL; 2117 const char *expr; 2118 char *cp; 2119 2120 if (DEBUG(HASH)) { 2121 Targ_Stats(); 2122 Var_Stats(); 2123 } 2124 2125 /* we generally want to keep quiet if a sub-make died */ 2126 if (shouldDieQuietly(gn, -1)) 2127 return; 2128 2129 if (s) 2130 printf("%s", s); 2131 2132 printf("\n%s: stopped in %s\n", progname, curdir); 2133 2134 if (en) 2135 return; /* we've been here! */ 2136 if (gn) 2137 SetErrorVars(gn); 2138 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2139 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2140 /* TODO: handle errors */ 2141 printf("%s", cp); 2142 free(cp); 2143 fflush(stdout); 2144 2145 /* 2146 * Finally, see if there is a .ERROR target, and run it if so. 2147 */ 2148 en = Targ_FindNode(".ERROR"); 2149 if (en) { 2150 en->type |= OP_SPECIAL; 2151 Compat_Make(en, en); 2152 } 2153 } 2154 2155 void 2156 Main_ExportMAKEFLAGS(Boolean first) 2157 { 2158 static Boolean once = TRUE; 2159 const char *expr; 2160 char *s; 2161 2162 if (once != first) 2163 return; 2164 once = FALSE; 2165 2166 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2167 (void)Var_Subst(expr, VAR_CMDLINE, VARE_WANTRES, &s); 2168 /* TODO: handle errors */ 2169 if (s[0] != '\0') { 2170 #ifdef POSIX 2171 setenv("MAKEFLAGS", s, 1); 2172 #else 2173 setenv("MAKE", s, 1); 2174 #endif 2175 } 2176 } 2177 2178 char * 2179 getTmpdir(void) 2180 { 2181 static char *tmpdir = NULL; 2182 2183 if (tmpdir == NULL) { 2184 struct stat st; 2185 2186 /* 2187 * Honor $TMPDIR but only if it is valid. 2188 * Ensure it ends with /. 2189 */ 2190 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2191 VARE_WANTRES, &tmpdir); 2192 /* TODO: handle errors */ 2193 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2194 free(tmpdir); 2195 tmpdir = bmake_strdup(_PATH_TMP); 2196 } 2197 } 2198 return tmpdir; 2199 } 2200 2201 /* 2202 * Create and open a temp file using "pattern". 2203 * If out_fname is provided, set it to a copy of the filename created. 2204 * Otherwise unlink the file once open. 2205 */ 2206 int 2207 mkTempFile(const char *pattern, char **out_fname) 2208 { 2209 static char *tmpdir = NULL; 2210 char tfile[MAXPATHLEN]; 2211 int fd; 2212 2213 if (pattern == NULL) 2214 pattern = TMPPAT; 2215 if (tmpdir == NULL) 2216 tmpdir = getTmpdir(); 2217 if (pattern[0] == '/') { 2218 snprintf(tfile, sizeof tfile, "%s", pattern); 2219 } else { 2220 snprintf(tfile, sizeof tfile, "%s%s", tmpdir, pattern); 2221 } 2222 if ((fd = mkstemp(tfile)) < 0) 2223 Punt("Could not create temporary file %s: %s", tfile, 2224 strerror(errno)); 2225 if (out_fname) { 2226 *out_fname = bmake_strdup(tfile); 2227 } else { 2228 unlink( 2229 tfile); /* we just want the descriptor */ 2230 } 2231 return fd; 2232 } 2233 2234 /* 2235 * Convert a string representation of a boolean. 2236 * Anything that looks like "No", "False", "Off", "0" etc, 2237 * is FALSE, otherwise TRUE. 2238 */ 2239 Boolean 2240 ParseBoolean(const char *s, Boolean bf) 2241 { 2242 switch (s[0]) { 2243 case '\0': /* not set - the default wins */ 2244 break; 2245 case '0': 2246 case 'F': 2247 case 'f': 2248 case 'N': 2249 case 'n': 2250 return FALSE; 2251 case 'O': 2252 case 'o': 2253 return s[1] != 'F' && s[1] != 'f'; 2254 default: 2255 return TRUE; 2256 } 2257 return bf; 2258 } 2259
Indexes created Mon Sep 22 13:09:51 GMT 2025