main.c revision 1.457
1 /* $NetBSD: main.c,v 1.457 2020/11/13 08:21:37 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 1.457 2020/11/13 08:21:37 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 #ifdef MAKE_NATIVE 992 return utsname->machine; 993 #else 994 #ifdef MAKE_MACHINE 995 return MAKE_MACHINE; 996 #else 997 return "unknown"; 998 #endif 999 #endif 1000 } 1001 1002 static const char * 1003 InitVarMachineArch(void) 1004 { 1005 const char *env = getenv("MACHINE_ARCH"); 1006 if (env != NULL) 1007 return env; 1008 1009 #ifdef MAKE_NATIVE 1010 { 1011 struct utsname utsname; 1012 static char machine_arch_buf[sizeof utsname.machine]; 1013 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1014 size_t len = sizeof machine_arch_buf; 1015 1016 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1017 &len, NULL, 0) < 0) { 1018 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1019 strerror(errno)); 1020 exit(2); 1021 } 1022 1023 return machine_arch_buf; 1024 } 1025 #elif defined(MACHINE_ARCH) 1026 return MACHINE_ARCH; 1027 #elif defined(MAKE_MACHINE_ARCH) 1028 return MAKE_MACHINE_ARCH; 1029 #else 1030 return "unknown"; 1031 #endif 1032 } 1033 1034 #ifndef NO_PWD_OVERRIDE 1035 /* 1036 * All this code is so that we know where we are when we start up 1037 * on a different machine with pmake. 1038 * 1039 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1040 * since the value of curdir can vary depending on how we got 1041 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1042 * or via subdir.mk in which case its likely a shell which does 1043 * not provide it. 1044 * 1045 * So, to stop it breaking this case only, we ignore PWD if 1046 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1047 */ 1048 static void 1049 HandlePWD(const struct stat *curdir_st) 1050 { 1051 char *pwd; 1052 void *prefix_freeIt, *makeobjdir_freeIt; 1053 const char *makeobjdir; 1054 struct stat pwd_st; 1055 1056 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1057 return; 1058 1059 if (Var_Value("MAKEOBJDIRPREFIX", VAR_CMDLINE, &prefix_freeIt) != 1060 NULL) { 1061 bmake_free(prefix_freeIt); 1062 return; 1063 } 1064 1065 makeobjdir = Var_Value("MAKEOBJDIR", VAR_CMDLINE, &makeobjdir_freeIt); 1066 if (makeobjdir != NULL && strchr(makeobjdir, '$') != NULL) 1067 goto ignore_pwd; 1068 1069 if (stat(pwd, &pwd_st) == 0 && 1070 curdir_st->st_ino == pwd_st.st_ino && 1071 curdir_st->st_dev == pwd_st.st_dev) 1072 (void)strncpy(curdir, pwd, MAXPATHLEN); 1073 1074 ignore_pwd: 1075 bmake_free(makeobjdir_freeIt); 1076 } 1077 #endif 1078 1079 /* 1080 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1081 * MAKEOBJDIR is set in the environment, try only that value 1082 * and fall back to .CURDIR if it does not exist. 1083 * 1084 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1085 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1086 * of these paths exist, just use .CURDIR. 1087 */ 1088 static void 1089 InitObjdir(const char *machine, const char *machine_arch) 1090 { 1091 Boolean writable; 1092 1093 Dir_InitDir(curdir); 1094 writable = GetBooleanVar("MAKE_OBJDIR_CHECK_WRITABLE", TRUE); 1095 (void)Main_SetObjdir(FALSE, "%s", curdir); 1096 1097 if (!Main_SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1098 !Main_SetVarObjdir(writable, "MAKEOBJDIR", "") && 1099 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1100 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1101 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1102 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1103 } 1104 1105 /* get rid of resource limit on file descriptors */ 1106 static void 1107 UnlimitFiles(void) 1108 { 1109 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1110 struct rlimit rl; 1111 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1112 rl.rlim_cur != rl.rlim_max) { 1113 rl.rlim_cur = rl.rlim_max; 1114 (void)setrlimit(RLIMIT_NOFILE, &rl); 1115 } 1116 #endif 1117 } 1118 1119 static void 1120 CmdOpts_Init(void) 1121 { 1122 opts.compatMake = FALSE; /* No compat mode */ 1123 opts.debug = 0; /* No debug verbosity, please. */ 1124 /* opts.debug_file has been initialized earlier */ 1125 opts.lint = FALSE; 1126 opts.debugVflag = FALSE; 1127 opts.checkEnvFirst = FALSE; 1128 opts.makefiles = Lst_New(); 1129 opts.ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1130 opts.maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1131 opts.keepgoing = FALSE; /* Stop on error */ 1132 opts.noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1133 opts.noExecute = FALSE; /* Execute all commands */ 1134 opts.queryFlag = FALSE; /* This is not just a check-run */ 1135 opts.noBuiltins = FALSE; /* Read the built-in rules */ 1136 opts.beSilent = FALSE; /* Print commands as executed */ 1137 opts.touchFlag = FALSE; /* Actually update targets */ 1138 opts.printVars = PVM_NONE; 1139 opts.variables = Lst_New(); 1140 opts.parseWarnFatal = FALSE; 1141 opts.enterFlag = FALSE; 1142 opts.varNoExportEnv = FALSE; 1143 opts.create = Lst_New(); 1144 } 1145 1146 /* Initialize MAKE and .MAKE to the path of the executable, so that it can be 1147 * found by execvp(3) and the shells, even after a chdir. 1148 * 1149 * If it's a relative path and contains a '/', resolve it to an absolute path. 1150 * Otherwise keep it as is, assuming it will be found in the PATH. */ 1151 static void 1152 InitVarMake(const char *argv0) 1153 { 1154 const char *make = argv0; 1155 1156 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1157 char pathbuf[MAXPATHLEN]; 1158 const char *abs = cached_realpath(argv0, pathbuf); 1159 struct stat st; 1160 if (abs != NULL && abs[0] == '/' && stat(make, &st) == 0) 1161 make = abs; 1162 } 1163 1164 Var_Set("MAKE", make, VAR_GLOBAL); 1165 Var_Set(".MAKE", make, VAR_GLOBAL); 1166 } 1167 1168 /* Add the directories from the colon-separated syspath to defSysIncPath. 1169 * After returning, the contents of syspath is unspecified. */ 1170 static void 1171 InitDefSysIncPath(char *syspath) 1172 { 1173 static char defsyspath[] = _PATH_DEFSYSPATH; 1174 char *start, *cp; 1175 1176 /* 1177 * If no user-supplied system path was given (through the -m option) 1178 * add the directories from the DEFSYSPATH (more than one may be given 1179 * as dir1:...:dirn) to the system include path. 1180 */ 1181 if (syspath == NULL || syspath[0] == '\0') 1182 syspath = defsyspath; 1183 else 1184 syspath = bmake_strdup(syspath); 1185 1186 for (start = syspath; *start != '\0'; start = cp) { 1187 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1188 continue; 1189 if (*cp == ':') 1190 *cp++ = '\0'; 1191 1192 /* look for magic parent directory search string */ 1193 if (strncmp(".../", start, 4) != 0) { 1194 (void)Dir_AddDir(defSysIncPath, start); 1195 } else { 1196 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1197 if (dir != NULL) { 1198 (void)Dir_AddDir(defSysIncPath, dir); 1199 free(dir); 1200 } 1201 } 1202 } 1203 1204 if (syspath != defsyspath) 1205 free(syspath); 1206 } 1207 1208 static void 1209 ReadBuiltinRules(void) 1210 { 1211 StringListNode *ln; 1212 StringList *sysMkPath = Lst_New(); 1213 1214 Dir_Expand(_PATH_DEFSYSMK, 1215 Lst_IsEmpty(sysIncPath) ? defSysIncPath : sysIncPath, 1216 sysMkPath); 1217 if (Lst_IsEmpty(sysMkPath)) 1218 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1219 1220 for (ln = sysMkPath->first; ln != NULL; ln = ln->next) 1221 if (ReadMakefile(ln->datum) == 0) 1222 break; 1223 1224 if (ln == NULL) 1225 Fatal("%s: cannot open %s.", 1226 progname, (const char *)sysMkPath->first->datum); 1227 1228 /* Free the list but not the actual filenames since these may still 1229 * be used in GNodes. */ 1230 Lst_Free(sysMkPath); 1231 } 1232 1233 static void 1234 InitMaxJobs(void) 1235 { 1236 char *value; 1237 int n; 1238 1239 if (forceJobs || opts.compatMake || 1240 !Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) 1241 return; 1242 1243 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1244 /* TODO: handle errors */ 1245 n = (int)strtol(value, NULL, 0); 1246 if (n < 1) { 1247 (void)fprintf(stderr, 1248 "%s: illegal value for .MAKE.JOBS " 1249 "-- must be positive integer!\n", 1250 progname); 1251 exit(1); 1252 } 1253 1254 if (n != opts.maxJobs) { 1255 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1256 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1257 } 1258 1259 opts.maxJobs = n; 1260 maxJobTokens = opts.maxJobs; 1261 forceJobs = TRUE; 1262 free(value); 1263 } 1264 1265 /* 1266 * For compatibility, look at the directories in the VPATH variable 1267 * and add them to the search path, if the variable is defined. The 1268 * variable's value is in the same format as the PATH environment 1269 * variable, i.e. <directory>:<directory>:<directory>... 1270 */ 1271 static void 1272 InitVpath(void) 1273 { 1274 char *vpath, savec, *path; 1275 if (!Var_Exists("VPATH", VAR_CMDLINE)) 1276 return; 1277 1278 (void)Var_Subst("${VPATH}", VAR_CMDLINE, VARE_WANTRES, &vpath); 1279 /* TODO: handle errors */ 1280 path = vpath; 1281 do { 1282 char *cp; 1283 /* skip to end of directory */ 1284 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1285 continue; 1286 /* Save terminator character so know when to stop */ 1287 savec = *cp; 1288 *cp = '\0'; 1289 /* Add directory to search path */ 1290 (void)Dir_AddDir(dirSearchPath, path); 1291 *cp = savec; 1292 path = cp + 1; 1293 } while (savec == ':'); 1294 free(vpath); 1295 } 1296 1297 static void 1298 ReadAllMakefiles(StringList *makefiles) 1299 { 1300 StringListNode *ln; 1301 1302 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1303 const char *fname = ln->datum; 1304 if (ReadMakefile(fname) != 0) 1305 Fatal("%s: cannot open %s.", progname, fname); 1306 } 1307 } 1308 1309 static void 1310 ReadFirstDefaultMakefile(void) 1311 { 1312 StringListNode *ln; 1313 char *prefs; 1314 1315 (void)Var_Subst("${" MAKE_MAKEFILE_PREFERENCE "}", 1316 VAR_CMDLINE, VARE_WANTRES, &prefs); 1317 /* TODO: handle errors */ 1318 1319 /* XXX: This should use a local list instead of opts.makefiles 1320 * since these makefiles do not come from the command line. They 1321 * also have different semantics in that only the first file that 1322 * is found is processed. See ReadAllMakefiles. */ 1323 (void)str2Lst_Append(opts.makefiles, prefs, NULL); 1324 1325 for (ln = opts.makefiles->first; ln != NULL; ln = ln->next) 1326 if (ReadMakefile(ln->datum) == 0) 1327 break; 1328 1329 free(prefs); 1330 } 1331 1332 /* Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1333 * Initialize a few modules. 1334 * Parse the arguments from MAKEFLAGS and the command line. */ 1335 static void 1336 main_Init(int argc, char **argv) 1337 { 1338 struct stat sa; 1339 const char *machine; 1340 const char *machine_arch; 1341 char *syspath = getenv("MAKESYSPATH"); 1342 struct utsname utsname; 1343 1344 /* default to writing debug to stderr */ 1345 opts.debug_file = stderr; 1346 1347 #ifdef SIGINFO 1348 (void)bmake_signal(SIGINFO, siginfo); 1349 #endif 1350 1351 InitRandom(); 1352 1353 if ((progname = strrchr(argv[0], '/')) != NULL) 1354 progname++; 1355 else 1356 progname = argv[0]; 1357 1358 UnlimitFiles(); 1359 1360 if (uname(&utsname) == -1) { 1361 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1362 strerror(errno)); 1363 exit(2); 1364 } 1365 1366 /* 1367 * Get the name of this type of MACHINE from utsname 1368 * so we can share an executable for similar machines. 1369 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1370 * 1371 * Note that both MACHINE and MACHINE_ARCH are decided at 1372 * run-time. 1373 */ 1374 machine = InitVarMachine(&utsname); 1375 machine_arch = InitVarMachineArch(); 1376 1377 myPid = getpid(); /* remember this for vFork() */ 1378 1379 /* 1380 * Just in case MAKEOBJDIR wants us to do something tricky. 1381 */ 1382 Var_Init(); /* Initialize the lists of variables for 1383 * parsing arguments */ 1384 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1385 Var_Set("MACHINE", machine, VAR_GLOBAL); 1386 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1387 #ifdef MAKE_VERSION 1388 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1389 #endif 1390 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1391 /* 1392 * This is the traditional preference for makefiles. 1393 */ 1394 #ifndef MAKEFILE_PREFERENCE_LIST 1395 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1396 #endif 1397 Var_Set(MAKE_MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, VAR_GLOBAL); 1398 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1399 1400 CmdOpts_Init(); 1401 allPrecious = FALSE; /* Remove targets when interrupted */ 1402 deleteOnError = FALSE; /* Historical default behavior */ 1403 jobsRunning = FALSE; 1404 1405 maxJobTokens = opts.maxJobs; 1406 ignorePWD = FALSE; 1407 1408 /* 1409 * Initialize the parsing, directory and variable modules to prepare 1410 * for the reading of inclusion paths and variable settings on the 1411 * command line 1412 */ 1413 1414 /* 1415 * Initialize various variables. 1416 * MAKE also gets this name, for compatibility 1417 * .MAKEFLAGS gets set to the empty string just in case. 1418 * MFLAGS also gets initialized empty, for compatibility. 1419 */ 1420 Parse_Init(); 1421 InitVarMake(argv[0]); 1422 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1423 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1424 Var_Set("MFLAGS", "", VAR_GLOBAL); 1425 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1426 /* some makefiles need to know this */ 1427 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMDLINE); 1428 1429 /* Set some other useful variables. */ 1430 { 1431 char tmp[64], *ep = getenv(MAKE_LEVEL_ENV); 1432 1433 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1434 if (makelevel < 0) 1435 makelevel = 0; 1436 snprintf(tmp, sizeof tmp, "%d", makelevel); 1437 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1438 snprintf(tmp, sizeof tmp, "%u", myPid); 1439 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1440 snprintf(tmp, sizeof tmp, "%u", getppid()); 1441 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1442 } 1443 if (makelevel > 0) { 1444 char pn[1024]; 1445 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1446 progname = bmake_strdup(pn); 1447 } 1448 1449 #ifdef USE_META 1450 meta_init(); 1451 #endif 1452 Dir_Init(); 1453 1454 /* 1455 * First snag any flags out of the MAKE environment variable. 1456 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1457 * in a different format). 1458 */ 1459 #ifdef POSIX 1460 { 1461 char *p1 = explode(getenv("MAKEFLAGS")); 1462 Main_ParseArgLine(p1); 1463 free(p1); 1464 } 1465 #else 1466 Main_ParseArgLine(getenv("MAKE")); 1467 #endif 1468 1469 /* 1470 * Find where we are (now). 1471 * We take care of PWD for the automounter below... 1472 */ 1473 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1474 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1475 progname, strerror(errno)); 1476 exit(2); 1477 } 1478 1479 MainParseArgs(argc, argv); 1480 1481 if (opts.enterFlag) 1482 printf("%s: Entering directory `%s'\n", progname, curdir); 1483 1484 /* 1485 * Verify that cwd is sane. 1486 */ 1487 if (stat(curdir, &sa) == -1) { 1488 (void)fprintf(stderr, "%s: %s: %s.\n", 1489 progname, curdir, strerror(errno)); 1490 exit(2); 1491 } 1492 1493 #ifndef NO_PWD_OVERRIDE 1494 HandlePWD(&sa); 1495 #endif 1496 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1497 1498 InitObjdir(machine, machine_arch); 1499 1500 /* 1501 * Initialize archive, target and suffix modules in preparation for 1502 * parsing the makefile(s) 1503 */ 1504 Arch_Init(); 1505 Targ_Init(); 1506 Suff_Init(); 1507 Trace_Init(tracefile); 1508 1509 DEFAULT = NULL; 1510 (void)time(&now); 1511 1512 Trace_Log(MAKESTART, NULL); 1513 1514 InitVarTargets(); 1515 1516 InitDefSysIncPath(syspath); 1517 } 1518 1519 /* Read the system makefile followed by either makefile, Makefile or the 1520 * files given by the -f option. Exit on parse errors. */ 1521 static void 1522 main_ReadFiles(void) 1523 { 1524 1525 if (!opts.noBuiltins) 1526 ReadBuiltinRules(); 1527 1528 if (!Lst_IsEmpty(opts.makefiles)) 1529 ReadAllMakefiles(opts.makefiles); 1530 else 1531 ReadFirstDefaultMakefile(); 1532 } 1533 1534 /* Compute the dependency graph. */ 1535 static void 1536 main_PrepareMaking(void) 1537 { 1538 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1539 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1540 /* ignore /dev/null and anything starting with "no" */ 1541 (void)Var_Subst("${.MAKE.DEPENDFILE:N/dev/null:Nno*:T}", 1542 VAR_CMDLINE, VARE_WANTRES, &makeDependfile); 1543 if (makeDependfile[0] != '\0') { 1544 /* TODO: handle errors */ 1545 doing_depend = TRUE; 1546 (void)ReadMakefile(makeDependfile); 1547 doing_depend = FALSE; 1548 } 1549 } 1550 1551 if (enterFlagObj) 1552 printf("%s: Entering directory `%s'\n", progname, objdir); 1553 1554 MakeMode(NULL); 1555 1556 { 1557 void *freeIt; 1558 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &freeIt), 1559 VAR_GLOBAL); 1560 bmake_free(freeIt); 1561 } 1562 1563 InitMaxJobs(); 1564 1565 /* 1566 * Be compatible if the user did not specify -j and did not explicitly 1567 * turn compatibility on. 1568 */ 1569 if (!opts.compatMake && !forceJobs) 1570 opts.compatMake = TRUE; 1571 1572 if (!opts.compatMake) 1573 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1574 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1575 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1576 1577 if (opts.printVars == PVM_NONE) 1578 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1579 1580 InitVpath(); 1581 1582 /* 1583 * Now that all search paths have been read for suffixes et al, it's 1584 * time to add the default search path to their lists... 1585 */ 1586 Suff_DoPaths(); 1587 1588 /* 1589 * Propagate attributes through :: dependency lists. 1590 */ 1591 Targ_Propagate(); 1592 1593 /* print the initial graph, if the user requested it */ 1594 if (DEBUG(GRAPH1)) 1595 Targ_PrintGraph(1); 1596 } 1597 1598 /* Make the targets. 1599 * If the -v or -V options are given, print variables instead. 1600 * Return whether the targets are out-of-date. */ 1601 static Boolean 1602 main_Run(void) 1603 { 1604 /* print the values of any variables requested by the user */ 1605 if (opts.printVars != PVM_NONE) { 1606 doPrintVars(); 1607 return FALSE; 1608 } else { 1609 return runTargets(); 1610 } 1611 } 1612 1613 /* Clean up after making the targets. */ 1614 static void 1615 main_CleanUp(void) 1616 { 1617 #ifdef CLEANUP 1618 Lst_Destroy(opts.variables, free); 1619 Lst_Free(opts.makefiles); /* don't free, may be used in GNodes */ 1620 Lst_Destroy(opts.create, free); 1621 #endif 1622 1623 /* print the graph now it's been processed if the user requested it */ 1624 if (DEBUG(GRAPH2)) 1625 Targ_PrintGraph(2); 1626 1627 Trace_Log(MAKEEND, NULL); 1628 1629 if (enterFlagObj) 1630 printf("%s: Leaving directory `%s'\n", progname, objdir); 1631 if (opts.enterFlag) 1632 printf("%s: Leaving directory `%s'\n", progname, curdir); 1633 1634 #ifdef USE_META 1635 meta_finish(); 1636 #endif 1637 Suff_End(); 1638 Targ_End(); 1639 Arch_End(); 1640 Var_End(); 1641 Parse_End(); 1642 Dir_End(); 1643 Job_End(); 1644 Trace_End(); 1645 } 1646 1647 /* Determine the exit code. */ 1648 static int 1649 main_Exit(Boolean outOfDate) 1650 { 1651 if (opts.lint && (errors > 0 || Parse_GetFatals() > 0)) 1652 return 2; /* Not 1 so -q can distinguish error */ 1653 return outOfDate ? 1 : 0; 1654 } 1655 1656 int 1657 main(int argc, char **argv) 1658 { 1659 Boolean outOfDate; 1660 1661 main_Init(argc, argv); 1662 main_ReadFiles(); 1663 main_PrepareMaking(); 1664 outOfDate = main_Run(); 1665 main_CleanUp(); 1666 return main_Exit(outOfDate); 1667 } 1668 1669 /* Open and parse the given makefile, with all its side effects. 1670 * 1671 * Results: 1672 * 0 if ok. -1 if couldn't open file. 1673 */ 1674 static int 1675 ReadMakefile(const char *fname) 1676 { 1677 int fd; 1678 char *name, *path = NULL; 1679 1680 if (strcmp(fname, "-") == 0) { 1681 Parse_File(NULL /*stdin*/, -1); 1682 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1683 } else { 1684 /* if we've chdir'd, rebuild the path name */ 1685 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1686 path = str_concat3(curdir, "/", fname); 1687 fd = open(path, O_RDONLY); 1688 if (fd != -1) { 1689 fname = path; 1690 goto found; 1691 } 1692 free(path); 1693 1694 /* If curdir failed, try objdir (ala .depend) */ 1695 path = str_concat3(objdir, "/", fname); 1696 fd = open(path, O_RDONLY); 1697 if (fd != -1) { 1698 fname = path; 1699 goto found; 1700 } 1701 } else { 1702 fd = open(fname, O_RDONLY); 1703 if (fd != -1) 1704 goto found; 1705 } 1706 /* look in -I and system include directories. */ 1707 name = Dir_FindFile(fname, parseIncPath); 1708 if (name == NULL) { 1709 SearchPath *sysInc = Lst_IsEmpty(sysIncPath) 1710 ? defSysIncPath : sysIncPath; 1711 name = Dir_FindFile(fname, sysInc); 1712 } 1713 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1714 free(name); 1715 free(path); 1716 return -1; 1717 } 1718 fname = name; 1719 /* 1720 * set the MAKEFILE variable desired by System V fans -- the 1721 * placement of the setting here means it gets set to the last 1722 * makefile specified, as it is set by SysV make. 1723 */ 1724 found: 1725 if (!doing_depend) 1726 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1727 Parse_File(fname, fd); 1728 } 1729 free(path); 1730 return 0; 1731 } 1732 1733 /*- 1734 * Cmd_Exec -- 1735 * Execute the command in cmd, and return the output of that command 1736 * in a string. In the output, newlines are replaced with spaces. 1737 * 1738 * Results: 1739 * A string containing the output of the command, or the empty string. 1740 * *errfmt returns a format string describing the command failure, 1741 * if any, using a single %s conversion specification. 1742 * 1743 * Side Effects: 1744 * The string must be freed by the caller. 1745 */ 1746 char * 1747 Cmd_Exec(const char *cmd, const char **errfmt) 1748 { 1749 const char *args[4]; /* Args for invoking the shell */ 1750 int fds[2]; /* Pipe streams */ 1751 int cpid; /* Child PID */ 1752 int pid; /* PID from wait() */ 1753 int status; /* command exit status */ 1754 Buffer buf; /* buffer to store the result */ 1755 ssize_t bytes_read; 1756 char *res; /* result */ 1757 size_t res_len; 1758 char *cp; 1759 int savederr; /* saved errno */ 1760 1761 *errfmt = NULL; 1762 1763 if (!shellName) 1764 Shell_Init(); 1765 /* 1766 * Set up arguments for shell 1767 */ 1768 args[0] = shellName; 1769 args[1] = "-c"; 1770 args[2] = cmd; 1771 args[3] = NULL; 1772 1773 /* 1774 * Open a pipe for fetching its output 1775 */ 1776 if (pipe(fds) == -1) { 1777 *errfmt = "Couldn't create pipe for \"%s\""; 1778 goto bad; 1779 } 1780 1781 /* 1782 * Fork 1783 */ 1784 switch (cpid = vFork()) { 1785 case 0: 1786 (void)close(fds[0]); /* Close input side of pipe */ 1787 1788 /* 1789 * Duplicate the output stream to the shell's output, then 1790 * shut the extra thing down. Note we don't fetch the error 1791 * stream...why not? Why? 1792 */ 1793 (void)dup2(fds[1], 1); 1794 (void)close(fds[1]); 1795 1796 Var_ExportVars(); 1797 1798 (void)execv(shellPath, UNCONST(args)); 1799 _exit(1); 1800 /*NOTREACHED*/ 1801 1802 case -1: 1803 *errfmt = "Couldn't exec \"%s\""; 1804 goto bad; 1805 1806 default: 1807 (void)close(fds[1]); /* No need for the writing half */ 1808 1809 savederr = 0; 1810 Buf_Init(&buf); 1811 1812 do { 1813 char result[BUFSIZ]; 1814 bytes_read = read(fds[0], result, sizeof result); 1815 if (bytes_read > 0) 1816 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1817 } while (bytes_read > 0 || 1818 (bytes_read == -1 && errno == EINTR)); 1819 if (bytes_read == -1) 1820 savederr = errno; 1821 1822 (void)close( 1823 fds[0]); /* Close the input side of the pipe. */ 1824 1825 /* Wait for the process to exit. */ 1826 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1827 JobReapChild(pid, status, FALSE); 1828 1829 res_len = Buf_Len(&buf); 1830 res = Buf_Destroy(&buf, FALSE); 1831 1832 if (savederr != 0) 1833 *errfmt = "Couldn't read shell's output for \"%s\""; 1834 1835 if (WIFSIGNALED(status)) 1836 *errfmt = "\"%s\" exited on a signal"; 1837 else if (WEXITSTATUS(status) != 0) 1838 *errfmt = "\"%s\" returned non-zero status"; 1839 1840 /* Convert newlines to spaces. A final newline is just stripped */ 1841 if (res_len > 0 && res[res_len - 1] == '\n') 1842 res[res_len - 1] = '\0'; 1843 for (cp = res; *cp != '\0'; cp++) 1844 if (*cp == '\n') 1845 *cp = ' '; 1846 break; 1847 } 1848 return res; 1849 bad: 1850 return bmake_strdup(""); 1851 } 1852 1853 /* Print a printf-style error message. 1854 * 1855 * In default mode, this error message has no consequences, in particular it 1856 * does not affect the exit status. Only in lint mode (-dL) it does. */ 1857 void 1858 Error(const char *fmt, ...) 1859 { 1860 va_list ap; 1861 FILE *err_file; 1862 1863 err_file = opts.debug_file; 1864 if (err_file == stdout) 1865 err_file = stderr; 1866 (void)fflush(stdout); 1867 for (;;) { 1868 va_start(ap, fmt); 1869 fprintf(err_file, "%s: ", progname); 1870 (void)vfprintf(err_file, fmt, ap); 1871 va_end(ap); 1872 (void)fprintf(err_file, "\n"); 1873 (void)fflush(err_file); 1874 if (err_file == stderr) 1875 break; 1876 err_file = stderr; 1877 } 1878 errors++; 1879 } 1880 1881 /* Produce a Fatal error message, then exit immediately. 1882 * 1883 * If jobs are running, wait for them to finish. */ 1884 void 1885 Fatal(const char *fmt, ...) 1886 { 1887 va_list ap; 1888 1889 va_start(ap, fmt); 1890 if (jobsRunning) 1891 Job_Wait(); 1892 1893 (void)fflush(stdout); 1894 (void)vfprintf(stderr, fmt, ap); 1895 va_end(ap); 1896 (void)fprintf(stderr, "\n"); 1897 (void)fflush(stderr); 1898 1899 PrintOnError(NULL, NULL); 1900 1901 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1902 Targ_PrintGraph(2); 1903 Trace_Log(MAKEERROR, NULL); 1904 exit(2); /* Not 1 so -q can distinguish error */ 1905 } 1906 1907 /* Major exception once jobs are being created. 1908 * Kills all jobs, prints a message and exits. */ 1909 void 1910 Punt(const char *fmt, ...) 1911 { 1912 va_list ap; 1913 1914 va_start(ap, fmt); 1915 (void)fflush(stdout); 1916 (void)fprintf(stderr, "%s: ", progname); 1917 (void)vfprintf(stderr, fmt, ap); 1918 va_end(ap); 1919 (void)fprintf(stderr, "\n"); 1920 (void)fflush(stderr); 1921 1922 PrintOnError(NULL, NULL); 1923 1924 DieHorribly(); 1925 } 1926 1927 /* Exit without giving a message. */ 1928 void 1929 DieHorribly(void) 1930 { 1931 if (jobsRunning) 1932 Job_AbortAll(); 1933 if (DEBUG(GRAPH2)) 1934 Targ_PrintGraph(2); 1935 Trace_Log(MAKEERROR, NULL); 1936 exit(2); /* Not 1, so -q can distinguish error */ 1937 } 1938 1939 /* Called when aborting due to errors in child shell to signal abnormal exit. 1940 * The program exits. 1941 * Errors is the number of errors encountered in Make_Make. */ 1942 void 1943 Finish(int errs) 1944 { 1945 if (shouldDieQuietly(NULL, -1)) 1946 exit(2); 1947 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1948 } 1949 1950 /* 1951 * eunlink -- 1952 * Remove a file carefully, avoiding directories. 1953 */ 1954 int 1955 eunlink(const char *file) 1956 { 1957 struct stat st; 1958 1959 if (lstat(file, &st) == -1) 1960 return -1; 1961 1962 if (S_ISDIR(st.st_mode)) { 1963 errno = EISDIR; 1964 return -1; 1965 } 1966 return unlink(file); 1967 } 1968 1969 static void 1970 write_all(int fd, const void *data, size_t n) 1971 { 1972 const char *mem = data; 1973 1974 while (n > 0) { 1975 ssize_t written = write(fd, mem, n); 1976 if (written == -1 && errno == EAGAIN) 1977 continue; 1978 if (written == -1) 1979 break; 1980 mem += written; 1981 n -= (size_t)written; 1982 } 1983 } 1984 1985 /* 1986 * execDie -- 1987 * Print why exec failed, avoiding stdio. 1988 */ 1989 void MAKE_ATTR_DEAD 1990 execDie(const char *af, const char *av) 1991 { 1992 Buffer buf; 1993 1994 Buf_Init(&buf); 1995 Buf_AddStr(&buf, progname); 1996 Buf_AddStr(&buf, ": "); 1997 Buf_AddStr(&buf, af); 1998 Buf_AddStr(&buf, "("); 1999 Buf_AddStr(&buf, av); 2000 Buf_AddStr(&buf, ") failed ("); 2001 Buf_AddStr(&buf, strerror(errno)); 2002 Buf_AddStr(&buf, ")\n"); 2003 2004 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 2005 2006 Buf_Destroy(&buf, TRUE); 2007 _exit(1); 2008 } 2009 2010 /* 2011 * realpath(3) can get expensive, cache results... 2012 */ 2013 static GNode *cached_realpaths = NULL; 2014 2015 static GNode * 2016 get_cached_realpaths(void) 2017 { 2018 2019 if (cached_realpaths == NULL) { 2020 cached_realpaths = Targ_NewGN("Realpath"); 2021 #ifndef DEBUG_REALPATH_CACHE 2022 cached_realpaths->flags = INTERNAL; 2023 #endif 2024 } 2025 2026 return cached_realpaths; 2027 } 2028 2029 /* purge any relative paths */ 2030 static void 2031 purge_cached_realpaths(void) 2032 { 2033 GNode *cache = get_cached_realpaths(); 2034 HashEntry *he, *nhe; 2035 HashIter hi; 2036 2037 HashIter_Init(&hi, &cache->context); 2038 he = HashIter_Next(&hi); 2039 while (he != NULL) { 2040 nhe = HashIter_Next(&hi); 2041 if (he->key[0] != '/') { 2042 if (DEBUG(DIR)) 2043 fprintf(stderr, "cached_realpath: purging %s\n", 2044 he->key); 2045 HashTable_DeleteEntry(&cache->context, he); 2046 } 2047 he = nhe; 2048 } 2049 } 2050 2051 char * 2052 cached_realpath(const char *pathname, char *resolved) 2053 { 2054 GNode *cache; 2055 const char *rp; 2056 void *freeIt; 2057 2058 if (pathname == NULL || pathname[0] == '\0') 2059 return NULL; 2060 2061 cache = get_cached_realpaths(); 2062 2063 if ((rp = Var_Value(pathname, cache, &freeIt)) != NULL) { 2064 /* a hit */ 2065 strncpy(resolved, rp, MAXPATHLEN); 2066 resolved[MAXPATHLEN - 1] = '\0'; 2067 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2068 Var_Set(pathname, rp, cache); 2069 } /* else should we negative-cache? */ 2070 2071 bmake_free(freeIt); 2072 return rp ? resolved : NULL; 2073 } 2074 2075 /* 2076 * Return true if we should die without noise. 2077 * For example our failing child was a sub-make or failure happened elsewhere. 2078 */ 2079 Boolean 2080 shouldDieQuietly(GNode *gn, int bf) 2081 { 2082 static int quietly = -1; 2083 2084 if (quietly < 0) { 2085 if (DEBUG(JOB) || !GetBooleanVar(".MAKE.DIE_QUIETLY", TRUE)) 2086 quietly = 0; 2087 else if (bf >= 0) 2088 quietly = bf; 2089 else 2090 quietly = gn != NULL && (gn->type & OP_MAKE); 2091 } 2092 return quietly; 2093 } 2094 2095 static void 2096 SetErrorVars(GNode *gn) 2097 { 2098 StringListNode *ln; 2099 2100 /* 2101 * We can print this even if there is no .ERROR target. 2102 */ 2103 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2104 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2105 2106 for (ln = gn->commands->first; ln != NULL; ln = ln->next) { 2107 const char *cmd = ln->datum; 2108 2109 if (cmd == NULL) 2110 break; 2111 Var_Append(".ERROR_CMD", cmd, VAR_GLOBAL); 2112 } 2113 } 2114 2115 void 2116 PrintOnError(GNode *gn, const char *s) 2117 { 2118 static GNode *en = NULL; 2119 const char *expr; 2120 char *cp; 2121 2122 if (DEBUG(HASH)) { 2123 Targ_Stats(); 2124 Var_Stats(); 2125 } 2126 2127 /* we generally want to keep quiet if a sub-make died */ 2128 if (shouldDieQuietly(gn, -1)) 2129 return; 2130 2131 if (s) 2132 printf("%s", s); 2133 2134 printf("\n%s: stopped in %s\n", progname, curdir); 2135 2136 if (en) 2137 return; /* we've been here! */ 2138 if (gn) 2139 SetErrorVars(gn); 2140 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2141 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2142 /* TODO: handle errors */ 2143 printf("%s", cp); 2144 free(cp); 2145 fflush(stdout); 2146 2147 /* 2148 * Finally, see if there is a .ERROR target, and run it if so. 2149 */ 2150 en = Targ_FindNode(".ERROR"); 2151 if (en) { 2152 en->type |= OP_SPECIAL; 2153 Compat_Make(en, en); 2154 } 2155 } 2156 2157 void 2158 Main_ExportMAKEFLAGS(Boolean first) 2159 { 2160 static Boolean once = TRUE; 2161 const char *expr; 2162 char *s; 2163 2164 if (once != first) 2165 return; 2166 once = FALSE; 2167 2168 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2169 (void)Var_Subst(expr, VAR_CMDLINE, VARE_WANTRES, &s); 2170 /* TODO: handle errors */ 2171 if (s[0] != '\0') { 2172 #ifdef POSIX 2173 setenv("MAKEFLAGS", s, 1); 2174 #else 2175 setenv("MAKE", s, 1); 2176 #endif 2177 } 2178 } 2179 2180 char * 2181 getTmpdir(void) 2182 { 2183 static char *tmpdir = NULL; 2184 2185 if (tmpdir == NULL) { 2186 struct stat st; 2187 2188 /* 2189 * Honor $TMPDIR but only if it is valid. 2190 * Ensure it ends with /. 2191 */ 2192 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2193 VARE_WANTRES, &tmpdir); 2194 /* TODO: handle errors */ 2195 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2196 free(tmpdir); 2197 tmpdir = bmake_strdup(_PATH_TMP); 2198 } 2199 } 2200 return tmpdir; 2201 } 2202 2203 /* 2204 * Create and open a temp file using "pattern". 2205 * If out_fname is provided, set it to a copy of the filename created. 2206 * Otherwise unlink the file once open. 2207 */ 2208 int 2209 mkTempFile(const char *pattern, char **out_fname) 2210 { 2211 static char *tmpdir = NULL; 2212 char tfile[MAXPATHLEN]; 2213 int fd; 2214 2215 if (pattern == NULL) 2216 pattern = TMPPAT; 2217 if (tmpdir == NULL) 2218 tmpdir = getTmpdir(); 2219 if (pattern[0] == '/') { 2220 snprintf(tfile, sizeof tfile, "%s", pattern); 2221 } else { 2222 snprintf(tfile, sizeof tfile, "%s%s", tmpdir, pattern); 2223 } 2224 if ((fd = mkstemp(tfile)) < 0) 2225 Punt("Could not create temporary file %s: %s", tfile, 2226 strerror(errno)); 2227 if (out_fname) { 2228 *out_fname = bmake_strdup(tfile); 2229 } else { 2230 unlink( 2231 tfile); /* we just want the descriptor */ 2232 } 2233 return fd; 2234 } 2235 2236 /* 2237 * Convert a string representation of a boolean. 2238 * Anything that looks like "No", "False", "Off", "0" etc, 2239 * is FALSE, otherwise TRUE. 2240 */ 2241 Boolean 2242 ParseBoolean(const char *s, Boolean bf) 2243 { 2244 switch (s[0]) { 2245 case '\0': /* not set - the default wins */ 2246 break; 2247 case '0': 2248 case 'F': 2249 case 'f': 2250 case 'N': 2251 case 'n': 2252 return FALSE; 2253 case 'O': 2254 case 'o': 2255 return s[1] != 'F' && s[1] != 'f'; 2256 default: 2257 return TRUE; 2258 } 2259 return bf; 2260 } 2261
Indexes created Thu Sep 25 02:09:54 GMT 2025