main.c revision 1.463
1 /* $NetBSD: main.c,v 1.463 2020/11/14 18:07:26 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 1.463 2020/11/14 18:07:26 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 *defaultNode; /* .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][0] == '\0') 662 Punt("illegal (null) argument."); 663 if (argv[1][0] == '-' && !dashDash) 664 goto rearg; 665 Lst_Append(opts.create, bmake_strdup(argv[1])); 666 } 667 } 668 669 return; 670 noarg: 671 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 672 progname, c); 673 usage(); 674 } 675 676 /* 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, "%s warning: %s: %s.\n", 736 progname, 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 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 /* Splits str into words, adding them to the list. 782 * The string must be kept alive as long as the list. */ 783 int 784 str2Lst_Append(StringList *lp, char *str) 785 { 786 char *cp; 787 int n; 788 789 const char *sep = " \t"; 790 791 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 792 Lst_Append(lp, cp); 793 n++; 794 } 795 return n; 796 } 797 798 #ifdef SIGINFO 799 /*ARGSUSED*/ 800 static void 801 siginfo(int signo MAKE_ATTR_UNUSED) 802 { 803 char dir[MAXPATHLEN]; 804 char str[2 * MAXPATHLEN]; 805 int len; 806 if (getcwd(dir, sizeof dir) == NULL) 807 return; 808 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 809 if (len > 0) 810 (void)write(STDERR_FILENO, str, (size_t)len); 811 } 812 #endif 813 814 /* 815 * Allow makefiles some control over the mode we run in. 816 */ 817 void 818 MakeMode(const char *mode) 819 { 820 char *mode_freeIt = NULL; 821 822 if (mode == NULL) { 823 (void)Var_Subst("${" MAKE_MODE ":tl}", 824 VAR_GLOBAL, VARE_WANTRES, &mode_freeIt); 825 /* TODO: handle errors */ 826 mode = mode_freeIt; 827 } 828 829 if (mode[0] != '\0') { 830 if (strstr(mode, "compat")) { 831 opts.compatMake = TRUE; 832 forceJobs = FALSE; 833 } 834 #if USE_META 835 if (strstr(mode, "meta")) 836 meta_mode_init(mode); 837 #endif 838 } 839 840 free(mode_freeIt); 841 } 842 843 static void 844 PrintVar(const char *varname, Boolean expandVars) 845 { 846 if (strchr(varname, '$')) { 847 char *evalue; 848 (void)Var_Subst(varname, VAR_GLOBAL, VARE_WANTRES, &evalue); 849 /* TODO: handle errors */ 850 printf("%s\n", evalue); 851 bmake_free(evalue); 852 853 } else if (expandVars) { 854 char *expr = str_concat3("${", varname, "}"); 855 char *evalue; 856 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &evalue); 857 /* TODO: handle errors */ 858 free(expr); 859 printf("%s\n", evalue); 860 bmake_free(evalue); 861 862 } else { 863 void *freeIt; 864 const char *value = Var_Value(varname, VAR_GLOBAL, &freeIt); 865 printf("%s\n", value ? value : ""); 866 bmake_free(freeIt); 867 } 868 } 869 870 /* 871 * Return a Boolean based on a variable. 872 * 873 * If the knob is not set, return the fallback. 874 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 875 * is FALSE, otherwise TRUE. 876 */ 877 static Boolean 878 GetBooleanVar(const char *varname, Boolean fallback) 879 { 880 char *expr = str_concat3("${", varname, ":U}"); 881 char *value; 882 Boolean res; 883 884 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 885 /* TODO: handle errors */ 886 res = ParseBoolean(value, fallback); 887 free(value); 888 free(expr); 889 return res; 890 } 891 892 static void 893 doPrintVars(void) 894 { 895 StringListNode *ln; 896 Boolean expandVars; 897 898 if (opts.printVars == PVM_EXPANDED) 899 expandVars = TRUE; 900 else if (opts.debugVflag) 901 expandVars = FALSE; 902 else 903 expandVars = GetBooleanVar(".MAKE.EXPAND_VARIABLES", FALSE); 904 905 for (ln = opts.variables->first; ln != NULL; ln = ln->next) { 906 const char *varname = ln->datum; 907 PrintVar(varname, expandVars); 908 } 909 } 910 911 static Boolean 912 runTargets(void) 913 { 914 GNodeList *targs; /* target nodes to create */ 915 Boolean outOfDate; /* FALSE if all targets up to date */ 916 917 /* 918 * Have now read the entire graph and need to make a list of 919 * targets to create. If none was given on the command line, 920 * we consult the parsing module to find the main target(s) 921 * to create. 922 */ 923 if (Lst_IsEmpty(opts.create)) 924 targs = Parse_MainName(); 925 else 926 targs = Targ_FindList(opts.create); 927 928 if (!opts.compatMake) { 929 /* 930 * Initialize job module before traversing the graph 931 * now that any .BEGIN and .END targets have been read. 932 * This is done only if the -q flag wasn't given 933 * (to prevent the .BEGIN from being executed should 934 * it exist). 935 */ 936 if (!opts.queryFlag) { 937 Job_Init(); 938 jobsRunning = TRUE; 939 } 940 941 /* Traverse the graph, checking on all the targets */ 942 outOfDate = Make_Run(targs); 943 } else { 944 /* 945 * Compat_Init will take care of creating all the 946 * targets as well as initializing the module. 947 */ 948 Compat_Run(targs); 949 outOfDate = FALSE; 950 } 951 Lst_Free(targs); 952 return outOfDate; 953 } 954 955 /* 956 * Set up the .TARGETS variable to contain the list of targets to be 957 * created. If none specified, make the variable empty -- the parser 958 * will fill the thing in with the default or .MAIN target. 959 */ 960 static void 961 InitVarTargets(void) 962 { 963 StringListNode *ln; 964 965 if (Lst_IsEmpty(opts.create)) { 966 Var_Set(".TARGETS", "", VAR_GLOBAL); 967 return; 968 } 969 970 for (ln = opts.create->first; ln != NULL; ln = ln->next) { 971 char *name = ln->datum; 972 Var_Append(".TARGETS", name, VAR_GLOBAL); 973 } 974 } 975 976 static void 977 InitRandom(void) 978 { 979 struct timeval tv; 980 981 gettimeofday(&tv, NULL); 982 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 983 } 984 985 static const char * 986 InitVarMachine(const struct utsname *utsname) 987 { 988 const char *machine = getenv("MACHINE"); 989 if (machine != NULL) 990 return machine; 991 992 #if defined(MAKE_NATIVE) 993 return utsname->machine; 994 #elif defined(MAKE_MACHINE) 995 return MAKE_MACHINE; 996 #else 997 return "unknown"; 998 #endif 999 } 1000 1001 static const char * 1002 InitVarMachineArch(void) 1003 { 1004 const char *env = getenv("MACHINE_ARCH"); 1005 if (env != NULL) 1006 return env; 1007 1008 #ifdef MAKE_NATIVE 1009 { 1010 struct utsname utsname; 1011 static char machine_arch_buf[sizeof utsname.machine]; 1012 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1013 size_t len = sizeof machine_arch_buf; 1014 1015 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1016 &len, NULL, 0) < 0) { 1017 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1018 strerror(errno)); 1019 exit(2); 1020 } 1021 1022 return machine_arch_buf; 1023 } 1024 #elif defined(MACHINE_ARCH) 1025 return MACHINE_ARCH; 1026 #elif defined(MAKE_MACHINE_ARCH) 1027 return MAKE_MACHINE_ARCH; 1028 #else 1029 return "unknown"; 1030 #endif 1031 } 1032 1033 #ifndef NO_PWD_OVERRIDE 1034 /* 1035 * All this code is so that we know where we are when we start up 1036 * on a different machine with pmake. 1037 * 1038 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1039 * since the value of curdir can vary depending on how we got 1040 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1041 * or via subdir.mk in which case its likely a shell which does 1042 * not provide it. 1043 * 1044 * So, to stop it breaking this case only, we ignore PWD if 1045 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1046 */ 1047 static void 1048 HandlePWD(const struct stat *curdir_st) 1049 { 1050 char *pwd; 1051 void *prefix_freeIt, *makeobjdir_freeIt; 1052 const char *makeobjdir; 1053 struct stat pwd_st; 1054 1055 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1056 return; 1057 1058 if (Var_Value("MAKEOBJDIRPREFIX", VAR_CMDLINE, &prefix_freeIt) != 1059 NULL) { 1060 bmake_free(prefix_freeIt); 1061 return; 1062 } 1063 1064 makeobjdir = Var_Value("MAKEOBJDIR", VAR_CMDLINE, &makeobjdir_freeIt); 1065 if (makeobjdir != NULL && strchr(makeobjdir, '$') != NULL) 1066 goto ignore_pwd; 1067 1068 if (stat(pwd, &pwd_st) == 0 && 1069 curdir_st->st_ino == pwd_st.st_ino && 1070 curdir_st->st_dev == pwd_st.st_dev) 1071 (void)strncpy(curdir, pwd, MAXPATHLEN); 1072 1073 ignore_pwd: 1074 bmake_free(makeobjdir_freeIt); 1075 } 1076 #endif 1077 1078 /* 1079 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1080 * MAKEOBJDIR is set in the environment, try only that value 1081 * and fall back to .CURDIR if it does not exist. 1082 * 1083 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1084 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1085 * of these paths exist, just use .CURDIR. 1086 */ 1087 static void 1088 InitObjdir(const char *machine, const char *machine_arch) 1089 { 1090 Boolean writable; 1091 1092 Dir_InitDir(curdir); 1093 writable = GetBooleanVar("MAKE_OBJDIR_CHECK_WRITABLE", TRUE); 1094 (void)Main_SetObjdir(FALSE, "%s", curdir); 1095 1096 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1097 !SetVarObjdir(writable, "MAKEOBJDIR", "") && 1098 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1099 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1100 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1101 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1102 } 1103 1104 /* get rid of resource limit on file descriptors */ 1105 static void 1106 UnlimitFiles(void) 1107 { 1108 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1109 struct rlimit rl; 1110 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1111 rl.rlim_cur != rl.rlim_max) { 1112 rl.rlim_cur = rl.rlim_max; 1113 (void)setrlimit(RLIMIT_NOFILE, &rl); 1114 } 1115 #endif 1116 } 1117 1118 static void 1119 CmdOpts_Init(void) 1120 { 1121 opts.compatMake = FALSE; /* No compat mode */ 1122 opts.debug = 0; /* No debug verbosity, please. */ 1123 /* opts.debug_file has been initialized earlier */ 1124 opts.lint = FALSE; 1125 opts.debugVflag = FALSE; 1126 opts.checkEnvFirst = FALSE; 1127 opts.makefiles = Lst_New(); 1128 opts.ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1129 opts.maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1130 opts.keepgoing = FALSE; /* Stop on error */ 1131 opts.noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1132 opts.noExecute = FALSE; /* Execute all commands */ 1133 opts.queryFlag = FALSE; /* This is not just a check-run */ 1134 opts.noBuiltins = FALSE; /* Read the built-in rules */ 1135 opts.beSilent = FALSE; /* Print commands as executed */ 1136 opts.touchFlag = FALSE; /* Actually update targets */ 1137 opts.printVars = PVM_NONE; 1138 opts.variables = Lst_New(); 1139 opts.parseWarnFatal = FALSE; 1140 opts.enterFlag = FALSE; 1141 opts.varNoExportEnv = FALSE; 1142 opts.create = Lst_New(); 1143 } 1144 1145 /* Initialize MAKE and .MAKE to the path of the executable, so that it can be 1146 * found by execvp(3) and the shells, even after a chdir. 1147 * 1148 * If it's a relative path and contains a '/', resolve it to an absolute path. 1149 * Otherwise keep it as is, assuming it will be found in the PATH. */ 1150 static void 1151 InitVarMake(const char *argv0) 1152 { 1153 const char *make = argv0; 1154 1155 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1156 char pathbuf[MAXPATHLEN]; 1157 const char *abs = cached_realpath(argv0, pathbuf); 1158 struct stat st; 1159 if (abs != NULL && abs[0] == '/' && stat(make, &st) == 0) 1160 make = abs; 1161 } 1162 1163 Var_Set("MAKE", make, VAR_GLOBAL); 1164 Var_Set(".MAKE", make, VAR_GLOBAL); 1165 } 1166 1167 /* Add the directories from the colon-separated syspath to defSysIncPath. 1168 * After returning, the contents of syspath is unspecified. */ 1169 static void 1170 InitDefSysIncPath(char *syspath) 1171 { 1172 static char defsyspath[] = _PATH_DEFSYSPATH; 1173 char *start, *cp; 1174 1175 /* 1176 * If no user-supplied system path was given (through the -m option) 1177 * add the directories from the DEFSYSPATH (more than one may be given 1178 * as dir1:...:dirn) to the system include path. 1179 */ 1180 if (syspath == NULL || syspath[0] == '\0') 1181 syspath = defsyspath; 1182 else 1183 syspath = bmake_strdup(syspath); 1184 1185 for (start = syspath; *start != '\0'; start = cp) { 1186 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1187 continue; 1188 if (*cp == ':') 1189 *cp++ = '\0'; 1190 1191 /* look for magic parent directory search string */ 1192 if (strncmp(".../", start, 4) != 0) { 1193 (void)Dir_AddDir(defSysIncPath, start); 1194 } else { 1195 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1196 if (dir != NULL) { 1197 (void)Dir_AddDir(defSysIncPath, dir); 1198 free(dir); 1199 } 1200 } 1201 } 1202 1203 if (syspath != defsyspath) 1204 free(syspath); 1205 } 1206 1207 static void 1208 ReadBuiltinRules(void) 1209 { 1210 StringListNode *ln; 1211 StringList *sysMkPath = Lst_New(); 1212 1213 Dir_Expand(_PATH_DEFSYSMK, 1214 Lst_IsEmpty(sysIncPath) ? defSysIncPath : sysIncPath, 1215 sysMkPath); 1216 if (Lst_IsEmpty(sysMkPath)) 1217 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1218 1219 for (ln = sysMkPath->first; ln != NULL; ln = ln->next) 1220 if (ReadMakefile(ln->datum) == 0) 1221 break; 1222 1223 if (ln == NULL) 1224 Fatal("%s: cannot open %s.", 1225 progname, (const char *)sysMkPath->first->datum); 1226 1227 /* Free the list but not the actual filenames since these may still 1228 * be used in GNodes. */ 1229 Lst_Free(sysMkPath); 1230 } 1231 1232 static void 1233 InitMaxJobs(void) 1234 { 1235 char *value; 1236 int n; 1237 1238 if (forceJobs || opts.compatMake || 1239 !Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) 1240 return; 1241 1242 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1243 /* TODO: handle errors */ 1244 n = (int)strtol(value, NULL, 0); 1245 if (n < 1) { 1246 (void)fprintf(stderr, 1247 "%s: illegal value for .MAKE.JOBS " 1248 "-- must be positive integer!\n", 1249 progname); 1250 exit(1); 1251 } 1252 1253 if (n != opts.maxJobs) { 1254 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1255 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1256 } 1257 1258 opts.maxJobs = n; 1259 maxJobTokens = opts.maxJobs; 1260 forceJobs = TRUE; 1261 free(value); 1262 } 1263 1264 /* 1265 * For compatibility, look at the directories in the VPATH variable 1266 * and add them to the search path, if the variable is defined. The 1267 * variable's value is in the same format as the PATH environment 1268 * variable, i.e. <directory>:<directory>:<directory>... 1269 */ 1270 static void 1271 InitVpath(void) 1272 { 1273 char *vpath, savec, *path; 1274 if (!Var_Exists("VPATH", VAR_CMDLINE)) 1275 return; 1276 1277 (void)Var_Subst("${VPATH}", VAR_CMDLINE, VARE_WANTRES, &vpath); 1278 /* TODO: handle errors */ 1279 path = vpath; 1280 do { 1281 char *cp; 1282 /* skip to end of directory */ 1283 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1284 continue; 1285 /* Save terminator character so know when to stop */ 1286 savec = *cp; 1287 *cp = '\0'; 1288 /* Add directory to search path */ 1289 (void)Dir_AddDir(dirSearchPath, path); 1290 *cp = savec; 1291 path = cp + 1; 1292 } while (savec == ':'); 1293 free(vpath); 1294 } 1295 1296 static void 1297 ReadAllMakefiles(StringList *makefiles) 1298 { 1299 StringListNode *ln; 1300 1301 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1302 const char *fname = ln->datum; 1303 if (ReadMakefile(fname) != 0) 1304 Fatal("%s: cannot open %s.", progname, fname); 1305 } 1306 } 1307 1308 static void 1309 ReadFirstDefaultMakefile(void) 1310 { 1311 StringListNode *ln; 1312 char *prefs; 1313 1314 (void)Var_Subst("${" MAKE_MAKEFILE_PREFERENCE "}", 1315 VAR_CMDLINE, VARE_WANTRES, &prefs); 1316 /* TODO: handle errors */ 1317 1318 /* XXX: This should use a local list instead of opts.makefiles 1319 * since these makefiles do not come from the command line. They 1320 * also have different semantics in that only the first file that 1321 * is found is processed. See ReadAllMakefiles. */ 1322 (void)str2Lst_Append(opts.makefiles, prefs); 1323 1324 for (ln = opts.makefiles->first; ln != NULL; ln = ln->next) 1325 if (ReadMakefile(ln->datum) == 0) 1326 break; 1327 1328 free(prefs); 1329 } 1330 1331 /* Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1332 * Initialize a few modules. 1333 * Parse the arguments from MAKEFLAGS and the command line. */ 1334 static void 1335 main_Init(int argc, char **argv) 1336 { 1337 struct stat sa; 1338 const char *machine; 1339 const char *machine_arch; 1340 char *syspath = getenv("MAKESYSPATH"); 1341 struct utsname utsname; 1342 1343 /* default to writing debug to stderr */ 1344 opts.debug_file = stderr; 1345 1346 #ifdef SIGINFO 1347 (void)bmake_signal(SIGINFO, siginfo); 1348 #endif 1349 1350 InitRandom(); 1351 1352 if ((progname = strrchr(argv[0], '/')) != NULL) 1353 progname++; 1354 else 1355 progname = argv[0]; 1356 1357 UnlimitFiles(); 1358 1359 if (uname(&utsname) == -1) { 1360 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1361 strerror(errno)); 1362 exit(2); 1363 } 1364 1365 /* 1366 * Get the name of this type of MACHINE from utsname 1367 * so we can share an executable for similar machines. 1368 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1369 * 1370 * Note that both MACHINE and MACHINE_ARCH are decided at 1371 * run-time. 1372 */ 1373 machine = InitVarMachine(&utsname); 1374 machine_arch = InitVarMachineArch(); 1375 1376 myPid = getpid(); /* remember this for vFork() */ 1377 1378 /* 1379 * Just in case MAKEOBJDIR wants us to do something tricky. 1380 */ 1381 Var_Init(); /* Initialize the lists of variables for 1382 * parsing arguments */ 1383 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1384 Var_Set("MACHINE", machine, VAR_GLOBAL); 1385 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1386 #ifdef MAKE_VERSION 1387 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1388 #endif 1389 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1390 /* 1391 * This is the traditional preference for makefiles. 1392 */ 1393 #ifndef MAKEFILE_PREFERENCE_LIST 1394 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1395 #endif 1396 Var_Set(MAKE_MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, VAR_GLOBAL); 1397 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1398 1399 CmdOpts_Init(); 1400 allPrecious = FALSE; /* Remove targets when interrupted */ 1401 deleteOnError = FALSE; /* Historical default behavior */ 1402 jobsRunning = FALSE; 1403 1404 maxJobTokens = opts.maxJobs; 1405 ignorePWD = FALSE; 1406 1407 /* 1408 * Initialize the parsing, directory and variable modules to prepare 1409 * for the reading of inclusion paths and variable settings on the 1410 * command line 1411 */ 1412 1413 /* 1414 * Initialize various variables. 1415 * MAKE also gets this name, for compatibility 1416 * .MAKEFLAGS gets set to the empty string just in case. 1417 * MFLAGS also gets initialized empty, for compatibility. 1418 */ 1419 Parse_Init(); 1420 InitVarMake(argv[0]); 1421 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1422 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1423 Var_Set("MFLAGS", "", VAR_GLOBAL); 1424 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1425 /* some makefiles need to know this */ 1426 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMDLINE); 1427 1428 /* Set some other useful variables. */ 1429 { 1430 char tmp[64], *ep = getenv(MAKE_LEVEL_ENV); 1431 1432 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1433 if (makelevel < 0) 1434 makelevel = 0; 1435 snprintf(tmp, sizeof tmp, "%d", makelevel); 1436 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1437 snprintf(tmp, sizeof tmp, "%u", myPid); 1438 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1439 snprintf(tmp, sizeof tmp, "%u", getppid()); 1440 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1441 } 1442 if (makelevel > 0) { 1443 char pn[1024]; 1444 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1445 progname = bmake_strdup(pn); 1446 } 1447 1448 #ifdef USE_META 1449 meta_init(); 1450 #endif 1451 Dir_Init(); 1452 1453 /* 1454 * First snag any flags out of the MAKE environment variable. 1455 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1456 * in a different format). 1457 */ 1458 #ifdef POSIX 1459 { 1460 char *p1 = explode(getenv("MAKEFLAGS")); 1461 Main_ParseArgLine(p1); 1462 free(p1); 1463 } 1464 #else 1465 Main_ParseArgLine(getenv("MAKE")); 1466 #endif 1467 1468 /* 1469 * Find where we are (now). 1470 * We take care of PWD for the automounter below... 1471 */ 1472 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1473 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1474 progname, strerror(errno)); 1475 exit(2); 1476 } 1477 1478 MainParseArgs(argc, argv); 1479 1480 if (opts.enterFlag) 1481 printf("%s: Entering directory `%s'\n", progname, curdir); 1482 1483 /* 1484 * Verify that cwd is sane. 1485 */ 1486 if (stat(curdir, &sa) == -1) { 1487 (void)fprintf(stderr, "%s: %s: %s.\n", 1488 progname, curdir, strerror(errno)); 1489 exit(2); 1490 } 1491 1492 #ifndef NO_PWD_OVERRIDE 1493 HandlePWD(&sa); 1494 #endif 1495 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1496 1497 InitObjdir(machine, machine_arch); 1498 1499 /* 1500 * Initialize archive, target and suffix modules in preparation for 1501 * parsing the makefile(s) 1502 */ 1503 Arch_Init(); 1504 Targ_Init(); 1505 Suff_Init(); 1506 Trace_Init(tracefile); 1507 1508 defaultNode = NULL; 1509 (void)time(&now); 1510 1511 Trace_Log(MAKESTART, NULL); 1512 1513 InitVarTargets(); 1514 1515 InitDefSysIncPath(syspath); 1516 } 1517 1518 /* Read the system makefile followed by either makefile, Makefile or the 1519 * files given by the -f option. Exit on parse errors. */ 1520 static void 1521 main_ReadFiles(void) 1522 { 1523 1524 if (!opts.noBuiltins) 1525 ReadBuiltinRules(); 1526 1527 if (!Lst_IsEmpty(opts.makefiles)) 1528 ReadAllMakefiles(opts.makefiles); 1529 else 1530 ReadFirstDefaultMakefile(); 1531 } 1532 1533 /* Compute the dependency graph. */ 1534 static void 1535 main_PrepareMaking(void) 1536 { 1537 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1538 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1539 /* ignore /dev/null and anything starting with "no" */ 1540 (void)Var_Subst("${.MAKE.DEPENDFILE:N/dev/null:Nno*:T}", 1541 VAR_CMDLINE, VARE_WANTRES, &makeDependfile); 1542 if (makeDependfile[0] != '\0') { 1543 /* TODO: handle errors */ 1544 doing_depend = TRUE; 1545 (void)ReadMakefile(makeDependfile); 1546 doing_depend = FALSE; 1547 } 1548 } 1549 1550 if (enterFlagObj) 1551 printf("%s: Entering directory `%s'\n", progname, objdir); 1552 1553 MakeMode(NULL); 1554 1555 { 1556 void *freeIt; 1557 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &freeIt), 1558 VAR_GLOBAL); 1559 bmake_free(freeIt); 1560 } 1561 1562 InitMaxJobs(); 1563 1564 /* 1565 * Be compatible if the user did not specify -j and did not explicitly 1566 * turn compatibility on. 1567 */ 1568 if (!opts.compatMake && !forceJobs) 1569 opts.compatMake = TRUE; 1570 1571 if (!opts.compatMake) 1572 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1573 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1574 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1575 1576 if (opts.printVars == PVM_NONE) 1577 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1578 1579 InitVpath(); 1580 1581 /* 1582 * Now that all search paths have been read for suffixes et al, it's 1583 * time to add the default search path to their lists... 1584 */ 1585 Suff_DoPaths(); 1586 1587 /* 1588 * Propagate attributes through :: dependency lists. 1589 */ 1590 Targ_Propagate(); 1591 1592 /* print the initial graph, if the user requested it */ 1593 if (DEBUG(GRAPH1)) 1594 Targ_PrintGraph(1); 1595 } 1596 1597 /* Make the targets. 1598 * If the -v or -V options are given, print variables instead. 1599 * Return whether the targets are out-of-date. */ 1600 static Boolean 1601 main_Run(void) 1602 { 1603 /* print the values of any variables requested by the user */ 1604 if (opts.printVars != PVM_NONE) { 1605 doPrintVars(); 1606 return FALSE; 1607 } else { 1608 return runTargets(); 1609 } 1610 } 1611 1612 /* Clean up after making the targets. */ 1613 static void 1614 main_CleanUp(void) 1615 { 1616 #ifdef CLEANUP 1617 Lst_Destroy(opts.variables, free); 1618 Lst_Free(opts.makefiles); /* don't free, may be used in GNodes */ 1619 Lst_Destroy(opts.create, free); 1620 #endif 1621 1622 /* print the graph now it's been processed if the user requested it */ 1623 if (DEBUG(GRAPH2)) 1624 Targ_PrintGraph(2); 1625 1626 Trace_Log(MAKEEND, NULL); 1627 1628 if (enterFlagObj) 1629 printf("%s: Leaving directory `%s'\n", progname, objdir); 1630 if (opts.enterFlag) 1631 printf("%s: Leaving directory `%s'\n", progname, curdir); 1632 1633 #ifdef USE_META 1634 meta_finish(); 1635 #endif 1636 Suff_End(); 1637 Targ_End(); 1638 Arch_End(); 1639 Var_End(); 1640 Parse_End(); 1641 Dir_End(); 1642 Job_End(); 1643 Trace_End(); 1644 } 1645 1646 /* Determine the exit code. */ 1647 static int 1648 main_Exit(Boolean outOfDate) 1649 { 1650 if (opts.lint && (errors > 0 || Parse_GetFatals() > 0)) 1651 return 2; /* Not 1 so -q can distinguish error */ 1652 return outOfDate ? 1 : 0; 1653 } 1654 1655 int 1656 main(int argc, char **argv) 1657 { 1658 Boolean outOfDate; 1659 1660 main_Init(argc, argv); 1661 main_ReadFiles(); 1662 main_PrepareMaking(); 1663 outOfDate = main_Run(); 1664 main_CleanUp(); 1665 return main_Exit(outOfDate); 1666 } 1667 1668 /* Open and parse the given makefile, with all its side effects. 1669 * 1670 * Results: 1671 * 0 if ok. -1 if couldn't open file. 1672 */ 1673 static int 1674 ReadMakefile(const char *fname) 1675 { 1676 int fd; 1677 char *name, *path = NULL; 1678 1679 if (strcmp(fname, "-") == 0) { 1680 Parse_File(NULL /*stdin*/, -1); 1681 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1682 } else { 1683 /* if we've chdir'd, rebuild the path name */ 1684 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1685 path = str_concat3(curdir, "/", fname); 1686 fd = open(path, O_RDONLY); 1687 if (fd != -1) { 1688 fname = path; 1689 goto found; 1690 } 1691 free(path); 1692 1693 /* If curdir failed, try objdir (ala .depend) */ 1694 path = str_concat3(objdir, "/", fname); 1695 fd = open(path, O_RDONLY); 1696 if (fd != -1) { 1697 fname = path; 1698 goto found; 1699 } 1700 } else { 1701 fd = open(fname, O_RDONLY); 1702 if (fd != -1) 1703 goto found; 1704 } 1705 /* look in -I and system include directories. */ 1706 name = Dir_FindFile(fname, parseIncPath); 1707 if (name == NULL) { 1708 SearchPath *sysInc = Lst_IsEmpty(sysIncPath) 1709 ? defSysIncPath : sysIncPath; 1710 name = Dir_FindFile(fname, sysInc); 1711 } 1712 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1713 free(name); 1714 free(path); 1715 return -1; 1716 } 1717 fname = name; 1718 /* 1719 * set the MAKEFILE variable desired by System V fans -- the 1720 * placement of the setting here means it gets set to the last 1721 * makefile specified, as it is set by SysV make. 1722 */ 1723 found: 1724 if (!doing_depend) 1725 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1726 Parse_File(fname, fd); 1727 } 1728 free(path); 1729 return 0; 1730 } 1731 1732 /*- 1733 * Cmd_Exec -- 1734 * Execute the command in cmd, and return the output of that command 1735 * in a string. In the output, newlines are replaced with spaces. 1736 * 1737 * Results: 1738 * A string containing the output of the command, or the empty string. 1739 * *errfmt returns a format string describing the command failure, 1740 * if any, using a single %s conversion specification. 1741 * 1742 * Side Effects: 1743 * The string must be freed by the caller. 1744 */ 1745 char * 1746 Cmd_Exec(const char *cmd, const char **errfmt) 1747 { 1748 const char *args[4]; /* Args for invoking the shell */ 1749 int fds[2]; /* Pipe streams */ 1750 int cpid; /* Child PID */ 1751 int pid; /* PID from wait() */ 1752 int status; /* command exit status */ 1753 Buffer buf; /* buffer to store the result */ 1754 ssize_t bytes_read; 1755 char *res; /* result */ 1756 size_t res_len; 1757 char *cp; 1758 int savederr; /* saved errno */ 1759 1760 *errfmt = NULL; 1761 1762 if (!shellName) 1763 Shell_Init(); 1764 /* 1765 * Set up arguments for shell 1766 */ 1767 args[0] = shellName; 1768 args[1] = "-c"; 1769 args[2] = cmd; 1770 args[3] = NULL; 1771 1772 /* 1773 * Open a pipe for fetching its output 1774 */ 1775 if (pipe(fds) == -1) { 1776 *errfmt = "Couldn't create pipe for \"%s\""; 1777 goto bad; 1778 } 1779 1780 /* 1781 * Fork 1782 */ 1783 switch (cpid = vFork()) { 1784 case 0: 1785 (void)close(fds[0]); /* Close input side of pipe */ 1786 1787 /* 1788 * Duplicate the output stream to the shell's output, then 1789 * shut the extra thing down. Note we don't fetch the error 1790 * stream...why not? Why? 1791 */ 1792 (void)dup2(fds[1], 1); 1793 (void)close(fds[1]); 1794 1795 Var_ExportVars(); 1796 1797 (void)execv(shellPath, UNCONST(args)); 1798 _exit(1); 1799 /*NOTREACHED*/ 1800 1801 case -1: 1802 *errfmt = "Couldn't exec \"%s\""; 1803 goto bad; 1804 1805 default: 1806 (void)close(fds[1]); /* No need for the writing half */ 1807 1808 savederr = 0; 1809 Buf_Init(&buf); 1810 1811 do { 1812 char result[BUFSIZ]; 1813 bytes_read = read(fds[0], result, sizeof result); 1814 if (bytes_read > 0) 1815 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1816 } while (bytes_read > 0 || 1817 (bytes_read == -1 && errno == EINTR)); 1818 if (bytes_read == -1) 1819 savederr = errno; 1820 1821 (void)close( 1822 fds[0]); /* Close the input side of the pipe. */ 1823 1824 /* Wait for the process to exit. */ 1825 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1826 JobReapChild(pid, status, FALSE); 1827 1828 res_len = Buf_Len(&buf); 1829 res = Buf_Destroy(&buf, FALSE); 1830 1831 if (savederr != 0) 1832 *errfmt = "Couldn't read shell's output for \"%s\""; 1833 1834 if (WIFSIGNALED(status)) 1835 *errfmt = "\"%s\" exited on a signal"; 1836 else if (WEXITSTATUS(status) != 0) 1837 *errfmt = "\"%s\" returned non-zero status"; 1838 1839 /* Convert newlines to spaces. A final newline is just stripped */ 1840 if (res_len > 0 && res[res_len - 1] == '\n') 1841 res[res_len - 1] = '\0'; 1842 for (cp = res; *cp != '\0'; cp++) 1843 if (*cp == '\n') 1844 *cp = ' '; 1845 break; 1846 } 1847 return res; 1848 bad: 1849 return bmake_strdup(""); 1850 } 1851 1852 /* Print a printf-style error message. 1853 * 1854 * In default mode, this error message has no consequences, in particular it 1855 * does not affect the exit status. Only in lint mode (-dL) it does. */ 1856 void 1857 Error(const char *fmt, ...) 1858 { 1859 va_list ap; 1860 FILE *err_file; 1861 1862 err_file = opts.debug_file; 1863 if (err_file == stdout) 1864 err_file = stderr; 1865 (void)fflush(stdout); 1866 for (;;) { 1867 va_start(ap, fmt); 1868 fprintf(err_file, "%s: ", progname); 1869 (void)vfprintf(err_file, fmt, ap); 1870 va_end(ap); 1871 (void)fprintf(err_file, "\n"); 1872 (void)fflush(err_file); 1873 if (err_file == stderr) 1874 break; 1875 err_file = stderr; 1876 } 1877 errors++; 1878 } 1879 1880 /* Produce a Fatal error message, then exit immediately. 1881 * 1882 * If jobs are running, wait for them to finish. */ 1883 void 1884 Fatal(const char *fmt, ...) 1885 { 1886 va_list ap; 1887 1888 va_start(ap, fmt); 1889 if (jobsRunning) 1890 Job_Wait(); 1891 1892 (void)fflush(stdout); 1893 (void)vfprintf(stderr, fmt, ap); 1894 va_end(ap); 1895 (void)fprintf(stderr, "\n"); 1896 (void)fflush(stderr); 1897 1898 PrintOnError(NULL, NULL); 1899 1900 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1901 Targ_PrintGraph(2); 1902 Trace_Log(MAKEERROR, NULL); 1903 exit(2); /* Not 1 so -q can distinguish error */ 1904 } 1905 1906 /* Major exception once jobs are being created. 1907 * Kills all jobs, prints a message and exits. */ 1908 void 1909 Punt(const char *fmt, ...) 1910 { 1911 va_list ap; 1912 1913 va_start(ap, fmt); 1914 (void)fflush(stdout); 1915 (void)fprintf(stderr, "%s: ", progname); 1916 (void)vfprintf(stderr, fmt, ap); 1917 va_end(ap); 1918 (void)fprintf(stderr, "\n"); 1919 (void)fflush(stderr); 1920 1921 PrintOnError(NULL, NULL); 1922 1923 DieHorribly(); 1924 } 1925 1926 /* Exit without giving a message. */ 1927 void 1928 DieHorribly(void) 1929 { 1930 if (jobsRunning) 1931 Job_AbortAll(); 1932 if (DEBUG(GRAPH2)) 1933 Targ_PrintGraph(2); 1934 Trace_Log(MAKEERROR, NULL); 1935 exit(2); /* Not 1, so -q can distinguish error */ 1936 } 1937 1938 /* Called when aborting due to errors in child shell to signal abnormal exit. 1939 * The program exits. 1940 * Errors is the number of errors encountered in Make_Make. */ 1941 void 1942 Finish(int errs) 1943 { 1944 if (shouldDieQuietly(NULL, -1)) 1945 exit(2); 1946 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1947 } 1948 1949 /* 1950 * eunlink -- 1951 * Remove a file carefully, avoiding directories. 1952 */ 1953 int 1954 eunlink(const char *file) 1955 { 1956 struct stat st; 1957 1958 if (lstat(file, &st) == -1) 1959 return -1; 1960 1961 if (S_ISDIR(st.st_mode)) { 1962 errno = EISDIR; 1963 return -1; 1964 } 1965 return unlink(file); 1966 } 1967 1968 static void 1969 write_all(int fd, const void *data, size_t n) 1970 { 1971 const char *mem = data; 1972 1973 while (n > 0) { 1974 ssize_t written = write(fd, mem, n); 1975 if (written == -1 && errno == EAGAIN) 1976 continue; 1977 if (written == -1) 1978 break; 1979 mem += written; 1980 n -= (size_t)written; 1981 } 1982 } 1983 1984 /* 1985 * execDie -- 1986 * Print why exec failed, avoiding stdio. 1987 */ 1988 void MAKE_ATTR_DEAD 1989 execDie(const char *af, const char *av) 1990 { 1991 Buffer buf; 1992 1993 Buf_Init(&buf); 1994 Buf_AddStr(&buf, progname); 1995 Buf_AddStr(&buf, ": "); 1996 Buf_AddStr(&buf, af); 1997 Buf_AddStr(&buf, "("); 1998 Buf_AddStr(&buf, av); 1999 Buf_AddStr(&buf, ") failed ("); 2000 Buf_AddStr(&buf, strerror(errno)); 2001 Buf_AddStr(&buf, ")\n"); 2002 2003 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 2004 2005 Buf_Destroy(&buf, TRUE); 2006 _exit(1); 2007 } 2008 2009 /* 2010 * realpath(3) can get expensive, cache results... 2011 */ 2012 static GNode *cached_realpaths = NULL; 2013 2014 static GNode * 2015 get_cached_realpaths(void) 2016 { 2017 2018 if (cached_realpaths == NULL) { 2019 cached_realpaths = Targ_NewGN("Realpath"); 2020 #ifndef DEBUG_REALPATH_CACHE 2021 cached_realpaths->flags = INTERNAL; 2022 #endif 2023 } 2024 2025 return cached_realpaths; 2026 } 2027 2028 /* purge any relative paths */ 2029 static void 2030 purge_cached_realpaths(void) 2031 { 2032 GNode *cache = get_cached_realpaths(); 2033 HashEntry *he, *nhe; 2034 HashIter hi; 2035 2036 HashIter_Init(&hi, &cache->context); 2037 he = HashIter_Next(&hi); 2038 while (he != NULL) { 2039 nhe = HashIter_Next(&hi); 2040 if (he->key[0] != '/') { 2041 if (DEBUG(DIR)) 2042 fprintf(stderr, "cached_realpath: purging %s\n", 2043 he->key); 2044 HashTable_DeleteEntry(&cache->context, he); 2045 } 2046 he = nhe; 2047 } 2048 } 2049 2050 char * 2051 cached_realpath(const char *pathname, char *resolved) 2052 { 2053 GNode *cache; 2054 const char *rp; 2055 void *freeIt; 2056 2057 if (pathname == NULL || pathname[0] == '\0') 2058 return NULL; 2059 2060 cache = get_cached_realpaths(); 2061 2062 if ((rp = Var_Value(pathname, cache, &freeIt)) != NULL) { 2063 /* a hit */ 2064 strncpy(resolved, rp, MAXPATHLEN); 2065 resolved[MAXPATHLEN - 1] = '\0'; 2066 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2067 Var_Set(pathname, rp, cache); 2068 } /* else should we negative-cache? */ 2069 2070 bmake_free(freeIt); 2071 return rp ? resolved : NULL; 2072 } 2073 2074 /* 2075 * Return true if we should die without noise. 2076 * For example our failing child was a sub-make or failure happened elsewhere. 2077 */ 2078 Boolean 2079 shouldDieQuietly(GNode *gn, int bf) 2080 { 2081 static int quietly = -1; 2082 2083 if (quietly < 0) { 2084 if (DEBUG(JOB) || !GetBooleanVar(".MAKE.DIE_QUIETLY", TRUE)) 2085 quietly = 0; 2086 else if (bf >= 0) 2087 quietly = bf; 2088 else 2089 quietly = gn != NULL && (gn->type & OP_MAKE); 2090 } 2091 return quietly; 2092 } 2093 2094 static void 2095 SetErrorVars(GNode *gn) 2096 { 2097 StringListNode *ln; 2098 2099 /* 2100 * We can print this even if there is no .ERROR target. 2101 */ 2102 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2103 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2104 2105 for (ln = gn->commands->first; ln != NULL; ln = ln->next) { 2106 const char *cmd = ln->datum; 2107 2108 if (cmd == NULL) 2109 break; 2110 Var_Append(".ERROR_CMD", cmd, VAR_GLOBAL); 2111 } 2112 } 2113 2114 void 2115 PrintOnError(GNode *gn, const char *s) 2116 { 2117 static GNode *en = NULL; 2118 const char *expr; 2119 char *cp; 2120 2121 if (DEBUG(HASH)) { 2122 Targ_Stats(); 2123 Var_Stats(); 2124 } 2125 2126 /* we generally want to keep quiet if a sub-make died */ 2127 if (shouldDieQuietly(gn, -1)) 2128 return; 2129 2130 if (s) 2131 printf("%s", s); 2132 2133 printf("\n%s: stopped in %s\n", progname, curdir); 2134 2135 if (en) 2136 return; /* we've been here! */ 2137 if (gn) 2138 SetErrorVars(gn); 2139 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2140 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2141 /* TODO: handle errors */ 2142 printf("%s", cp); 2143 free(cp); 2144 fflush(stdout); 2145 2146 /* 2147 * Finally, see if there is a .ERROR target, and run it if so. 2148 */ 2149 en = Targ_FindNode(".ERROR"); 2150 if (en) { 2151 en->type |= OP_SPECIAL; 2152 Compat_Make(en, en); 2153 } 2154 } 2155 2156 void 2157 Main_ExportMAKEFLAGS(Boolean first) 2158 { 2159 static Boolean once = TRUE; 2160 const char *expr; 2161 char *s; 2162 2163 if (once != first) 2164 return; 2165 once = FALSE; 2166 2167 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2168 (void)Var_Subst(expr, VAR_CMDLINE, VARE_WANTRES, &s); 2169 /* TODO: handle errors */ 2170 if (s[0] != '\0') { 2171 #ifdef POSIX 2172 setenv("MAKEFLAGS", s, 1); 2173 #else 2174 setenv("MAKE", s, 1); 2175 #endif 2176 } 2177 } 2178 2179 char * 2180 getTmpdir(void) 2181 { 2182 static char *tmpdir = NULL; 2183 2184 if (tmpdir == NULL) { 2185 struct stat st; 2186 2187 /* 2188 * Honor $TMPDIR but only if it is valid. 2189 * Ensure it ends with /. 2190 */ 2191 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2192 VARE_WANTRES, &tmpdir); 2193 /* TODO: handle errors */ 2194 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2195 free(tmpdir); 2196 tmpdir = bmake_strdup(_PATH_TMP); 2197 } 2198 } 2199 return tmpdir; 2200 } 2201 2202 /* 2203 * Create and open a temp file using "pattern". 2204 * If out_fname is provided, set it to a copy of the filename created. 2205 * Otherwise unlink the file once open. 2206 */ 2207 int 2208 mkTempFile(const char *pattern, char **out_fname) 2209 { 2210 static char *tmpdir = NULL; 2211 char tfile[MAXPATHLEN]; 2212 int fd; 2213 2214 if (pattern == NULL) 2215 pattern = TMPPAT; 2216 if (tmpdir == NULL) 2217 tmpdir = getTmpdir(); 2218 if (pattern[0] == '/') { 2219 snprintf(tfile, sizeof tfile, "%s", pattern); 2220 } else { 2221 snprintf(tfile, sizeof tfile, "%s%s", tmpdir, pattern); 2222 } 2223 if ((fd = mkstemp(tfile)) < 0) 2224 Punt("Could not create temporary file %s: %s", tfile, 2225 strerror(errno)); 2226 if (out_fname) { 2227 *out_fname = bmake_strdup(tfile); 2228 } else { 2229 unlink( 2230 tfile); /* we just want the descriptor */ 2231 } 2232 return fd; 2233 } 2234 2235 /* 2236 * Convert a string representation of a boolean. 2237 * Anything that looks like "No", "False", "Off", "0" etc, 2238 * is FALSE, otherwise TRUE. 2239 */ 2240 Boolean 2241 ParseBoolean(const char *s, Boolean bf) 2242 { 2243 switch (s[0]) { 2244 case '\0': /* not set - the default wins */ 2245 break; 2246 case '0': 2247 case 'F': 2248 case 'f': 2249 case 'N': 2250 case 'n': 2251 return FALSE; 2252 case 'O': 2253 case 'o': 2254 return s[1] != 'F' && s[1] != 'f'; 2255 default: 2256 return TRUE; 2257 } 2258 return bf; 2259 } 2260
Indexes created Tue Sep 23 02:09:52 GMT 2025