main.c revision 1.381
1 /* $NetBSD: main.c,v 1.381 2020/10/22 06:38:52 rillig Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 /*- 72 * main.c -- 73 * The main file for this entire program. Exit routines etc 74 * reside here. 75 * 76 * Utility functions defined in this file: 77 * Main_ParseArgLine Takes a line of arguments, breaks them and 78 * treats them as if they were given when first 79 * invoked. Used by the parse module to implement 80 * the .MFLAGS target. 81 * 82 * Error Print a tagged error message. The global 83 * MAKE variable must have been defined. This 84 * takes a format string and optional arguments 85 * for it. 86 * 87 * Fatal Print an error message and exit. Also takes 88 * a format string and arguments for it. 89 * 90 * Punt Aborts all jobs and exits with a message. Also 91 * takes a format string and arguments for it. 92 * 93 * Finish Finish things up by printing the number of 94 * errors which occurred, as passed to it, and 95 * exiting. 96 */ 97 98 #include <sys/types.h> 99 #include <sys/time.h> 100 #include <sys/param.h> 101 #include <sys/resource.h> 102 #include <sys/stat.h> 103 #ifdef MAKE_NATIVE 104 #include <sys/sysctl.h> 105 #endif 106 #include <sys/utsname.h> 107 #include <sys/wait.h> 108 109 #include <errno.h> 110 #include <signal.h> 111 #include <stdarg.h> 112 #include <time.h> 113 114 #include "make.h" 115 #include "dir.h" 116 #include "job.h" 117 #include "pathnames.h" 118 #include "trace.h" 119 120 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 121 MAKE_RCSID("$NetBSD: main.c,v 1.381 2020/10/22 06:38:52 rillig Exp $"); 122 #if defined(MAKE_NATIVE) && !defined(lint) 123 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 " 124 "The Regents of the University of California. " 125 "All rights reserved."); 126 #endif 127 128 #ifndef DEFMAXLOCAL 129 #define DEFMAXLOCAL DEFMAXJOBS 130 #endif 131 132 StringList * create; /* Targets to be made */ 133 time_t now; /* Time at start of make */ 134 GNode *DEFAULT; /* .DEFAULT node */ 135 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 136 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 137 138 static Boolean noBuiltins; /* -r flag */ 139 static StringList * makefiles; /* ordered list of makefiles to read */ 140 static int printVars; /* -[vV] argument */ 141 #define COMPAT_VARS 1 142 #define EXPAND_VARS 2 143 static StringList * variables; /* list of variables to print 144 * (for -v and -V) */ 145 int maxJobs; /* -j argument */ 146 static int maxJobTokens; /* -j argument */ 147 Boolean compatMake; /* -B argument */ 148 int debug; /* -d argument */ 149 Boolean debugVflag; /* -dV */ 150 Boolean noExecute; /* -n flag */ 151 Boolean noRecursiveExecute; /* -N flag */ 152 Boolean keepgoing; /* -k flag */ 153 Boolean queryFlag; /* -q flag */ 154 Boolean touchFlag; /* -t flag */ 155 Boolean enterFlag; /* -w flag */ 156 Boolean enterFlagObj; /* -w and objdir != srcdir */ 157 Boolean ignoreErrors; /* -i flag */ 158 Boolean beSilent; /* -s flag */ 159 Boolean oldVars; /* variable substitution style */ 160 Boolean checkEnvFirst; /* -e flag */ 161 Boolean parseWarnFatal; /* -W flag */ 162 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 163 Boolean varNoExportEnv; /* -X flag */ 164 Boolean doing_depend; /* Set while reading .depend */ 165 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 166 static const char * tracefile; 167 static int ReadMakefile(const char *); 168 static void usage(void) MAKE_ATTR_DEAD; 169 static void purge_cached_realpaths(void); 170 171 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 172 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 173 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 174 char *progname; /* the program name */ 175 char *makeDependfile; 176 pid_t myPid; 177 int makelevel; 178 179 FILE *debug_file; 180 181 Boolean forceJobs = FALSE; 182 183 extern SearchPath *parseIncPath; 184 185 /* 186 * For compatibility with the POSIX version of MAKEFLAGS that includes 187 * all the options with out -, convert flags to -f -l -a -g -s. 188 */ 189 static char * 190 explode(const char *flags) 191 { 192 size_t len; 193 char *nf, *st; 194 const char *f; 195 196 if (flags == NULL) 197 return NULL; 198 199 for (f = flags; *f; f++) 200 if (!ch_isalpha(*f)) 201 break; 202 203 if (*f) 204 return bmake_strdup(flags); 205 206 len = strlen(flags); 207 st = nf = bmake_malloc(len * 3 + 1); 208 while (*flags) { 209 *nf++ = '-'; 210 *nf++ = *flags++; 211 *nf++ = ' '; 212 } 213 *nf = '\0'; 214 return st; 215 } 216 217 static void 218 parse_debug_option_F(const char *modules) 219 { 220 const char *mode; 221 size_t len; 222 char *fname; 223 224 if (debug_file != stdout && debug_file != stderr) 225 fclose(debug_file); 226 227 if (*modules == '+') { 228 modules++; 229 mode = "a"; 230 } else 231 mode = "w"; 232 233 if (strcmp(modules, "stdout") == 0) { 234 debug_file = stdout; 235 return; 236 } 237 if (strcmp(modules, "stderr") == 0) { 238 debug_file = stderr; 239 return; 240 } 241 242 len = strlen(modules); 243 fname = bmake_malloc(len + 20); 244 memcpy(fname, modules, len + 1); 245 246 /* Let the filename be modified by the pid */ 247 if (strcmp(fname + len - 3, ".%d") == 0) 248 snprintf(fname + len - 2, 20, "%d", getpid()); 249 250 debug_file = fopen(fname, mode); 251 if (!debug_file) { 252 fprintf(stderr, "Cannot open debug file %s\n", 253 fname); 254 usage(); 255 } 256 free(fname); 257 } 258 259 static void 260 parse_debug_options(const char *argvalue) 261 { 262 const char *modules; 263 264 for (modules = argvalue; *modules; ++modules) { 265 switch (*modules) { 266 case '0': /* undocumented, only intended for tests */ 267 debug &= DEBUG_LINT; 268 break; 269 case 'A': 270 debug = ~(0|DEBUG_LINT); 271 break; 272 case 'a': 273 debug |= DEBUG_ARCH; 274 break; 275 case 'C': 276 debug |= DEBUG_CWD; 277 break; 278 case 'c': 279 debug |= DEBUG_COND; 280 break; 281 case 'd': 282 debug |= DEBUG_DIR; 283 break; 284 case 'e': 285 debug |= DEBUG_ERROR; 286 break; 287 case 'f': 288 debug |= DEBUG_FOR; 289 break; 290 case 'g': 291 if (modules[1] == '1') { 292 debug |= DEBUG_GRAPH1; 293 ++modules; 294 } 295 else if (modules[1] == '2') { 296 debug |= DEBUG_GRAPH2; 297 ++modules; 298 } 299 else if (modules[1] == '3') { 300 debug |= DEBUG_GRAPH3; 301 ++modules; 302 } 303 break; 304 case 'h': 305 debug |= DEBUG_HASH; 306 break; 307 case 'j': 308 debug |= DEBUG_JOB; 309 break; 310 case 'L': 311 debug |= DEBUG_LINT; 312 break; 313 case 'l': 314 debug |= DEBUG_LOUD; 315 break; 316 case 'M': 317 debug |= DEBUG_META; 318 break; 319 case 'm': 320 debug |= DEBUG_MAKE; 321 break; 322 case 'n': 323 debug |= DEBUG_SCRIPT; 324 break; 325 case 'p': 326 debug |= DEBUG_PARSE; 327 break; 328 case 's': 329 debug |= DEBUG_SUFF; 330 break; 331 case 't': 332 debug |= DEBUG_TARG; 333 break; 334 case 'V': 335 debugVflag = TRUE; 336 break; 337 case 'v': 338 debug |= DEBUG_VAR; 339 break; 340 case 'x': 341 debug |= DEBUG_SHELL; 342 break; 343 case 'F': 344 parse_debug_option_F(modules + 1); 345 goto debug_setbuf; 346 default: 347 (void)fprintf(stderr, 348 "%s: illegal argument to d option -- %c\n", 349 progname, *modules); 350 usage(); 351 } 352 } 353 debug_setbuf: 354 /* 355 * Make the debug_file unbuffered, and make 356 * stdout line buffered (unless debugfile == stdout). 357 */ 358 setvbuf(debug_file, NULL, _IONBF, 0); 359 if (debug_file != stdout) { 360 setvbuf(stdout, NULL, _IOLBF, 0); 361 } 362 } 363 364 /* 365 * does path contain any relative components 366 */ 367 static Boolean 368 is_relpath(const char *path) 369 { 370 const char *cp; 371 372 if (path[0] != '/') 373 return TRUE; 374 cp = path; 375 while ((cp = strstr(cp, "/.")) != NULL) { 376 cp += 2; 377 if (cp[0] == '/' || cp[0] == '\0') 378 return TRUE; 379 else if (cp[0] == '.') { 380 if (cp[1] == '/' || cp[1] == '\0') 381 return TRUE; 382 } 383 } 384 return FALSE; 385 } 386 387 static void 388 MainParseArgChdir(const char *argvalue) 389 { 390 struct stat sa, sb; 391 392 if (chdir(argvalue) == -1) { 393 (void)fprintf(stderr, "%s: chdir %s: %s\n", 394 progname, argvalue, strerror(errno)); 395 exit(1); 396 } 397 if (getcwd(curdir, MAXPATHLEN) == NULL) { 398 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 399 exit(2); 400 } 401 if (!is_relpath(argvalue) && 402 stat(argvalue, &sa) != -1 && 403 stat(curdir, &sb) != -1 && 404 sa.st_ino == sb.st_ino && 405 sa.st_dev == sb.st_dev) 406 strncpy(curdir, argvalue, MAXPATHLEN); 407 ignorePWD = TRUE; 408 } 409 410 static void 411 MainParseArgJobsInternal(const char *argvalue) 412 { 413 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 414 (void)fprintf(stderr, 415 "%s: internal error -- J option malformed (%s)\n", 416 progname, argvalue); 417 usage(); 418 } 419 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 420 (fcntl(jp_1, F_GETFD, 0) < 0)) { 421 #if 0 422 (void)fprintf(stderr, 423 "%s: ###### warning -- J descriptors were closed!\n", 424 progname); 425 exit(2); 426 #endif 427 jp_0 = -1; 428 jp_1 = -1; 429 compatMake = TRUE; 430 } else { 431 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 432 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 433 } 434 } 435 436 static void 437 MainParseArgJobs(const char *argvalue) 438 { 439 char *p; 440 441 forceJobs = TRUE; 442 maxJobs = (int)strtol(argvalue, &p, 0); 443 if (*p != '\0' || maxJobs < 1) { 444 (void)fprintf(stderr, 445 "%s: illegal argument to -j -- must be positive integer!\n", 446 progname); 447 exit(1); /* XXX: why not 2? */ 448 } 449 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 450 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 451 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 452 maxJobTokens = maxJobs; 453 } 454 455 static void 456 MainParseArgSysInc(const char *argvalue) 457 { 458 /* look for magic parent directory search string */ 459 if (strncmp(".../", argvalue, 4) == 0) { 460 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 461 if (found_path == NULL) 462 return; 463 (void)Dir_AddDir(sysIncPath, found_path); 464 free(found_path); 465 } else { 466 (void)Dir_AddDir(sysIncPath, argvalue); 467 } 468 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 469 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 470 } 471 472 static Boolean 473 MainParseArg(char c, const char *argvalue) 474 { 475 switch (c) { 476 case '\0': 477 break; 478 case 'B': 479 compatMake = TRUE; 480 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 481 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 482 break; 483 case 'C': 484 MainParseArgChdir(argvalue); 485 break; 486 case 'D': 487 if (argvalue[0] == '\0') return FALSE; 488 Var_Set(argvalue, "1", VAR_GLOBAL); 489 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 490 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 491 break; 492 case 'I': 493 Parse_AddIncludeDir(argvalue); 494 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 495 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 496 break; 497 case 'J': 498 MainParseArgJobsInternal(argvalue); 499 break; 500 case 'N': 501 noExecute = TRUE; 502 noRecursiveExecute = TRUE; 503 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 504 break; 505 case 'S': 506 keepgoing = FALSE; 507 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 508 break; 509 case 'T': 510 tracefile = bmake_strdup(argvalue); 511 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 512 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 513 break; 514 case 'V': 515 case 'v': 516 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 517 Lst_Append(variables, bmake_strdup(argvalue)); 518 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 519 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 520 break; 521 case 'W': 522 parseWarnFatal = TRUE; 523 break; 524 case 'X': 525 varNoExportEnv = TRUE; 526 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 527 break; 528 case 'd': 529 /* If '-d-opts' don't pass to children */ 530 if (argvalue[0] == '-') 531 argvalue++; 532 else { 533 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 534 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 535 } 536 parse_debug_options(argvalue); 537 break; 538 case 'e': 539 checkEnvFirst = TRUE; 540 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 541 break; 542 case 'f': 543 Lst_Append(makefiles, bmake_strdup(argvalue)); 544 break; 545 case 'i': 546 ignoreErrors = TRUE; 547 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 548 break; 549 case 'j': 550 MainParseArgJobs(argvalue); 551 break; 552 case 'k': 553 keepgoing = TRUE; 554 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 555 break; 556 case 'm': 557 MainParseArgSysInc(argvalue); 558 break; 559 case 'n': 560 noExecute = TRUE; 561 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 562 break; 563 case 'q': 564 queryFlag = TRUE; 565 /* Kind of nonsensical, wot? */ 566 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 567 break; 568 case 'r': 569 noBuiltins = TRUE; 570 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 571 break; 572 case 's': 573 beSilent = TRUE; 574 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 575 break; 576 case 't': 577 touchFlag = TRUE; 578 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 579 break; 580 case 'w': 581 enterFlag = TRUE; 582 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 583 break; 584 default: 585 case '?': 586 usage(); 587 } 588 return TRUE; 589 } 590 591 /* Parse the given arguments. Called from main() and from 592 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 593 * 594 * The arguments must be treated as read-only and will be freed after the 595 * call. 596 * 597 * XXX: Deal with command line overriding .MAKEFLAGS in makefile */ 598 static void 599 MainParseArgs(int argc, char **argv) 600 { 601 char c; 602 int arginc; 603 char *argvalue; 604 char *optscan; 605 Boolean inOption, dashDash = FALSE; 606 607 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 608 /* Can't actually use getopt(3) because rescanning is not portable */ 609 610 rearg: 611 inOption = FALSE; 612 optscan = NULL; 613 while (argc > 1) { 614 const char *optspec; 615 if (!inOption) 616 optscan = argv[1]; 617 c = *optscan++; 618 arginc = 0; 619 if (inOption) { 620 if (c == '\0') { 621 ++argv; 622 --argc; 623 inOption = FALSE; 624 continue; 625 } 626 } else { 627 if (c != '-' || dashDash) 628 break; 629 inOption = TRUE; 630 c = *optscan++; 631 } 632 /* '-' found at some earlier point */ 633 optspec = strchr(optspecs, c); 634 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 635 /* -<something> found, and <something> should have an arg */ 636 inOption = FALSE; 637 arginc = 1; 638 argvalue = optscan; 639 if (*argvalue == '\0') { 640 if (argc < 3) 641 goto noarg; 642 argvalue = argv[2]; 643 arginc = 2; 644 } 645 } else { 646 argvalue = NULL; 647 } 648 switch (c) { 649 case '\0': 650 arginc = 1; 651 inOption = FALSE; 652 break; 653 case '-': 654 dashDash = TRUE; 655 break; 656 default: 657 if (!MainParseArg(c, argvalue)) 658 goto noarg; 659 } 660 argv += arginc; 661 argc -= arginc; 662 } 663 664 oldVars = TRUE; 665 666 /* 667 * See if the rest of the arguments are variable assignments and 668 * perform them if so. Else take them to be targets and stuff them 669 * on the end of the "create" list. 670 */ 671 for (; argc > 1; ++argv, --argc) { 672 VarAssign var; 673 if (Parse_IsVar(argv[1], &var)) { 674 Parse_DoVar(&var, VAR_CMD); 675 } else { 676 if (!*argv[1]) 677 Punt("illegal (null) argument."); 678 if (*argv[1] == '-' && !dashDash) 679 goto rearg; 680 Lst_Append(create, bmake_strdup(argv[1])); 681 } 682 } 683 684 return; 685 noarg: 686 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 687 progname, c); 688 usage(); 689 } 690 691 /* Break a line of arguments into words and parse them. 692 * 693 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 694 * by main() when reading the MAKEFLAGS environment variable. */ 695 void 696 Main_ParseArgLine(const char *line) 697 { 698 Words words; 699 char *p1; 700 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 701 char *buf; 702 703 if (line == NULL) 704 return; 705 for (; *line == ' '; ++line) 706 continue; 707 if (!*line) 708 return; 709 710 buf = str_concat3(argv0, " ", line); 711 free(p1); 712 713 words = Str_Words(buf, TRUE); 714 if (words.words == NULL) { 715 Error("Unterminated quoted string [%s]", buf); 716 free(buf); 717 return; 718 } 719 free(buf); 720 MainParseArgs((int)words.len, words.words); 721 722 Words_Free(words); 723 } 724 725 Boolean 726 Main_SetObjdir(const char *fmt, ...) 727 { 728 struct stat sb; 729 char *path; 730 char buf[MAXPATHLEN + 1]; 731 char buf2[MAXPATHLEN + 1]; 732 Boolean rc = FALSE; 733 va_list ap; 734 735 va_start(ap, fmt); 736 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 737 va_end(ap); 738 739 if (path[0] != '/') { 740 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 741 path = buf2; 742 } 743 744 /* look for the directory and try to chdir there */ 745 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 746 if (chdir(path)) { 747 (void)fprintf(stderr, "make warning: %s: %s.\n", 748 path, strerror(errno)); 749 } else { 750 snprintf(objdir, sizeof objdir, "%s", path); 751 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 752 setenv("PWD", objdir, 1); 753 Dir_InitDot(); 754 purge_cached_realpaths(); 755 rc = TRUE; 756 if (enterFlag && strcmp(objdir, curdir) != 0) 757 enterFlagObj = TRUE; 758 } 759 } 760 761 return rc; 762 } 763 764 static Boolean 765 Main_SetVarObjdir(const char *var, const char *suffix) 766 { 767 char *path_freeIt; 768 const char *path = Var_Value(var, VAR_CMD, &path_freeIt); 769 const char *xpath; 770 char *xpath_freeIt; 771 772 if (path == NULL || path[0] == '\0') { 773 bmake_free(path_freeIt); 774 return FALSE; 775 } 776 777 /* expand variable substitutions */ 778 xpath = path; 779 xpath_freeIt = NULL; 780 if (strchr(path, '$') != 0) { 781 (void)Var_Subst(path, VAR_GLOBAL, VARE_WANTRES, &xpath_freeIt); 782 /* TODO: handle errors */ 783 xpath = xpath_freeIt; 784 } 785 786 (void)Main_SetObjdir("%s%s", xpath, suffix); 787 788 bmake_free(xpath_freeIt); 789 bmake_free(path_freeIt); 790 return TRUE; 791 } 792 793 /* Read and parse the makefile. 794 * Return TRUE if reading the makefile succeeded, for Lst_Find. */ 795 static Boolean 796 ReadMakefileSucceeded(const void *fname, const void *unused) 797 { 798 return ReadMakefile(fname) == 0; 799 } 800 801 /* Read and parse the makefile. 802 * Return TRUE if reading the makefile failed, for Lst_Find. */ 803 static Boolean 804 ReadMakefileFailed(const void *fname, const void *unused) 805 { 806 return ReadMakefile(fname) != 0; 807 } 808 809 int 810 str2Lst_Append(StringList *lp, char *str, const char *sep) 811 { 812 char *cp; 813 int n; 814 815 if (!sep) 816 sep = " \t"; 817 818 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 819 Lst_Append(lp, cp); 820 n++; 821 } 822 return n; 823 } 824 825 #ifdef SIGINFO 826 /*ARGSUSED*/ 827 static void 828 siginfo(int signo MAKE_ATTR_UNUSED) 829 { 830 char dir[MAXPATHLEN]; 831 char str[2 * MAXPATHLEN]; 832 int len; 833 if (getcwd(dir, sizeof(dir)) == NULL) 834 return; 835 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 836 if (len > 0) 837 (void)write(STDERR_FILENO, str, (size_t)len); 838 } 839 #endif 840 841 /* 842 * Allow makefiles some control over the mode we run in. 843 */ 844 void 845 MakeMode(const char *mode) 846 { 847 char *mode_freeIt = NULL; 848 849 if (mode == NULL) { 850 (void)Var_Subst("${" MAKE_MODE ":tl}", 851 VAR_GLOBAL, VARE_WANTRES, &mode_freeIt); 852 /* TODO: handle errors */ 853 mode = mode_freeIt; 854 } 855 856 if (mode[0] != '\0') { 857 if (strstr(mode, "compat")) { 858 compatMake = TRUE; 859 forceJobs = FALSE; 860 } 861 #if USE_META 862 if (strstr(mode, "meta")) 863 meta_mode_init(mode); 864 #endif 865 } 866 867 free(mode_freeIt); 868 } 869 870 static void 871 doPrintVars(void) 872 { 873 StringListNode *ln; 874 Boolean expandVars; 875 876 if (printVars == EXPAND_VARS) 877 expandVars = TRUE; 878 else if (debugVflag) 879 expandVars = FALSE; 880 else 881 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 882 883 for (ln = variables->first; ln != NULL; ln = ln->next) { 884 const char *var = ln->datum; 885 const char *value; 886 char *p1; 887 888 if (strchr(var, '$')) { 889 (void)Var_Subst(var, VAR_GLOBAL, VARE_WANTRES, &p1); 890 /* TODO: handle errors */ 891 value = p1; 892 } else if (expandVars) { 893 char *expr = str_concat3("${", var, "}"); 894 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &p1); 895 /* TODO: handle errors */ 896 value = p1; 897 free(expr); 898 } else { 899 value = Var_Value(var, VAR_GLOBAL, &p1); 900 } 901 printf("%s\n", value ? value : ""); 902 bmake_free(p1); 903 } 904 } 905 906 static Boolean 907 runTargets(void) 908 { 909 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 910 Boolean outOfDate; /* FALSE if all targets up to date */ 911 912 /* 913 * Have now read the entire graph and need to make a list of 914 * targets to create. If none was given on the command line, 915 * we consult the parsing module to find the main target(s) 916 * to create. 917 */ 918 if (Lst_IsEmpty(create)) 919 targs = Parse_MainName(); 920 else 921 targs = Targ_FindList(create); 922 923 if (!compatMake) { 924 /* 925 * Initialize job module before traversing the graph 926 * now that any .BEGIN and .END targets have been read. 927 * This is done only if the -q flag wasn't given 928 * (to prevent the .BEGIN from being executed should 929 * it exist). 930 */ 931 if (!queryFlag) { 932 Job_Init(); 933 jobsRunning = TRUE; 934 } 935 936 /* Traverse the graph, checking on all the targets */ 937 outOfDate = Make_Run(targs); 938 } else { 939 /* 940 * Compat_Init will take care of creating all the 941 * targets as well as initializing the module. 942 */ 943 Compat_Run(targs); 944 outOfDate = FALSE; 945 } 946 Lst_Free(targs); 947 return outOfDate; 948 } 949 950 /* 951 * Set up the .TARGETS variable to contain the list of targets to be 952 * created. If none specified, make the variable empty -- the parser 953 * will fill the thing in with the default or .MAIN target. 954 */ 955 static void 956 InitVarTargets(void) 957 { 958 StringListNode *ln; 959 960 if (Lst_IsEmpty(create)) { 961 Var_Set(".TARGETS", "", VAR_GLOBAL); 962 return; 963 } 964 965 for (ln = create->first; ln != NULL; ln = ln->next) { 966 char *name = ln->datum; 967 Var_Append(".TARGETS", name, VAR_GLOBAL); 968 } 969 } 970 971 static const char * 972 init_machine(const struct utsname *utsname) 973 { 974 const char *machine = getenv("MACHINE"); 975 if (machine != NULL) 976 return machine; 977 978 #ifdef MAKE_NATIVE 979 return utsname->machine; 980 #else 981 #ifdef MAKE_MACHINE 982 return MAKE_MACHINE; 983 #else 984 return "unknown"; 985 #endif 986 #endif 987 } 988 989 static const char * 990 init_machine_arch(void) 991 { 992 const char *env = getenv("MACHINE_ARCH"); 993 if (env != NULL) 994 return env; 995 996 #ifdef MAKE_NATIVE 997 { 998 struct utsname utsname; 999 static char machine_arch_buf[sizeof(utsname.machine)]; 1000 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1001 size_t len = sizeof(machine_arch_buf); 1002 1003 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1004 &len, NULL, 0) < 0) { 1005 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1006 strerror(errno)); 1007 exit(2); 1008 } 1009 1010 return machine_arch_buf; 1011 } 1012 #else 1013 #ifndef MACHINE_ARCH 1014 #ifdef MAKE_MACHINE_ARCH 1015 return MAKE_MACHINE_ARCH; 1016 #else 1017 return "unknown"; 1018 #endif 1019 #else 1020 return MACHINE_ARCH; 1021 #endif 1022 #endif 1023 } 1024 1025 #ifndef NO_PWD_OVERRIDE 1026 /* 1027 * All this code is so that we know where we are when we start up 1028 * on a different machine with pmake. 1029 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1030 * since the value of curdir can vary depending on how we got 1031 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1032 * or via subdir.mk in which case its likely a shell which does 1033 * not provide it. 1034 * So, to stop it breaking this case only, we ignore PWD if 1035 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1036 */ 1037 static void 1038 HandlePWD(const struct stat *sa) 1039 { 1040 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1041 struct stat sb; 1042 1043 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1044 return; 1045 1046 if (Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1047 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1048 VAR_CMD, &ptmp2); 1049 1050 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1051 if (stat(pwd, &sb) == 0 && 1052 sa->st_ino == sb.st_ino && 1053 sa->st_dev == sb.st_dev) 1054 (void)strncpy(curdir, pwd, MAXPATHLEN); 1055 } 1056 } 1057 bmake_free(ptmp1); 1058 bmake_free(ptmp2); 1059 } 1060 #endif 1061 1062 /*- 1063 * main -- 1064 * The main function, for obvious reasons. Initializes variables 1065 * and a few modules, then parses the arguments give it in the 1066 * environment and on the command line. Reads the system makefile 1067 * followed by either Makefile, makefile or the file given by the 1068 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 1069 * flags it has received by then uses either the Make or the Compat 1070 * module to create the initial list of targets. 1071 * 1072 * Results: 1073 * If -q was given, exits -1 if anything was out-of-date. Else it exits 1074 * 0. 1075 * 1076 * Side Effects: 1077 * The program exits when done. Targets are created. etc. etc. etc. 1078 */ 1079 int 1080 main(int argc, char **argv) 1081 { 1082 Boolean outOfDate; /* FALSE if all targets up to date */ 1083 struct stat sa; 1084 char *p1, *path; 1085 char mdpath[MAXPATHLEN]; 1086 const char *machine; 1087 const char *machine_arch; 1088 char *syspath = getenv("MAKESYSPATH"); 1089 StringList *sysMkPath; /* Path of sys.mk */ 1090 char *cp = NULL, *start; 1091 /* avoid faults on read-only strings */ 1092 static char defsyspath[] = _PATH_DEFSYSPATH; 1093 struct timeval rightnow; /* to initialize random seed */ 1094 struct utsname utsname; 1095 1096 /* default to writing debug to stderr */ 1097 debug_file = stderr; 1098 1099 #ifdef SIGINFO 1100 (void)bmake_signal(SIGINFO, siginfo); 1101 #endif 1102 /* 1103 * Set the seed to produce a different random sequence 1104 * on each program execution. 1105 */ 1106 gettimeofday(&rightnow, NULL); 1107 srandom((unsigned int)(rightnow.tv_sec + rightnow.tv_usec)); 1108 1109 if ((progname = strrchr(argv[0], '/')) != NULL) 1110 progname++; 1111 else 1112 progname = argv[0]; 1113 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1114 /* 1115 * get rid of resource limit on file descriptors 1116 */ 1117 { 1118 struct rlimit rl; 1119 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1120 rl.rlim_cur != rl.rlim_max) { 1121 rl.rlim_cur = rl.rlim_max; 1122 (void)setrlimit(RLIMIT_NOFILE, &rl); 1123 } 1124 } 1125 #endif 1126 1127 if (uname(&utsname) == -1) { 1128 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1129 strerror(errno)); 1130 exit(2); 1131 } 1132 1133 /* 1134 * Get the name of this type of MACHINE from utsname 1135 * so we can share an executable for similar machines. 1136 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1137 * 1138 * Note that both MACHINE and MACHINE_ARCH are decided at 1139 * run-time. 1140 */ 1141 machine = init_machine(&utsname); 1142 machine_arch = init_machine_arch(); 1143 1144 myPid = getpid(); /* remember this for vFork() */ 1145 1146 /* 1147 * Just in case MAKEOBJDIR wants us to do something tricky. 1148 */ 1149 Var_Init(); /* Initialize the lists of variables for 1150 * parsing arguments */ 1151 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1152 Var_Set("MACHINE", machine, VAR_GLOBAL); 1153 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1154 #ifdef MAKE_VERSION 1155 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1156 #endif 1157 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1158 /* 1159 * This is the traditional preference for makefiles. 1160 */ 1161 #ifndef MAKEFILE_PREFERENCE_LIST 1162 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1163 #endif 1164 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1165 VAR_GLOBAL); 1166 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1167 1168 create = Lst_New(); 1169 makefiles = Lst_New(); 1170 printVars = 0; 1171 debugVflag = FALSE; 1172 variables = Lst_New(); 1173 beSilent = FALSE; /* Print commands as executed */ 1174 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1175 noExecute = FALSE; /* Execute all commands */ 1176 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1177 keepgoing = FALSE; /* Stop on error */ 1178 allPrecious = FALSE; /* Remove targets when interrupted */ 1179 deleteOnError = FALSE; /* Historical default behavior */ 1180 queryFlag = FALSE; /* This is not just a check-run */ 1181 noBuiltins = FALSE; /* Read the built-in rules */ 1182 touchFlag = FALSE; /* Actually update targets */ 1183 debug = 0; /* No debug verbosity, please. */ 1184 jobsRunning = FALSE; 1185 1186 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1187 maxJobTokens = maxJobs; 1188 compatMake = FALSE; /* No compat mode */ 1189 ignorePWD = FALSE; 1190 1191 /* 1192 * Initialize the parsing, directory and variable modules to prepare 1193 * for the reading of inclusion paths and variable settings on the 1194 * command line 1195 */ 1196 1197 /* 1198 * Initialize various variables. 1199 * MAKE also gets this name, for compatibility 1200 * .MAKEFLAGS gets set to the empty string just in case. 1201 * MFLAGS also gets initialized empty, for compatibility. 1202 */ 1203 Parse_Init(); 1204 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1205 /* 1206 * Leave alone if it is an absolute path, or if it does 1207 * not contain a '/' in which case we need to find it in 1208 * the path, like execvp(3) and the shells do. 1209 */ 1210 p1 = argv[0]; 1211 } else { 1212 struct stat sb; 1213 /* 1214 * A relative path, canonicalize it. 1215 */ 1216 p1 = cached_realpath(argv[0], mdpath); 1217 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1218 p1 = argv[0]; /* realpath failed */ 1219 } 1220 } 1221 Var_Set("MAKE", p1, VAR_GLOBAL); 1222 Var_Set(".MAKE", p1, VAR_GLOBAL); 1223 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1224 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1225 Var_Set("MFLAGS", "", VAR_GLOBAL); 1226 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1227 /* some makefiles need to know this */ 1228 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1229 1230 /* 1231 * Set some other useful macros 1232 */ 1233 { 1234 char tmp[64], *ep; 1235 1236 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1237 if (makelevel < 0) 1238 makelevel = 0; 1239 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1240 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1241 snprintf(tmp, sizeof(tmp), "%u", myPid); 1242 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1243 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1244 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1245 } 1246 if (makelevel > 0) { 1247 char pn[1024]; 1248 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1249 progname = bmake_strdup(pn); 1250 } 1251 1252 #ifdef USE_META 1253 meta_init(); 1254 #endif 1255 Dir_Init(); 1256 1257 /* 1258 * First snag any flags out of the MAKE environment variable. 1259 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1260 * in a different format). 1261 */ 1262 #ifdef POSIX 1263 p1 = explode(getenv("MAKEFLAGS")); 1264 Main_ParseArgLine(p1); 1265 free(p1); 1266 #else 1267 Main_ParseArgLine(getenv("MAKE")); 1268 #endif 1269 1270 /* 1271 * Find where we are (now). 1272 * We take care of PWD for the automounter below... 1273 */ 1274 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1275 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1276 progname, strerror(errno)); 1277 exit(2); 1278 } 1279 1280 MainParseArgs(argc, argv); 1281 1282 if (enterFlag) 1283 printf("%s: Entering directory `%s'\n", progname, curdir); 1284 1285 /* 1286 * Verify that cwd is sane. 1287 */ 1288 if (stat(curdir, &sa) == -1) { 1289 (void)fprintf(stderr, "%s: %s: %s.\n", 1290 progname, curdir, strerror(errno)); 1291 exit(2); 1292 } 1293 1294 #ifndef NO_PWD_OVERRIDE 1295 HandlePWD(&sa); 1296 #endif 1297 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1298 1299 /* 1300 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1301 * MAKEOBJDIR is set in the environment, try only that value 1302 * and fall back to .CURDIR if it does not exist. 1303 * 1304 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1305 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1306 * of these paths exist, just use .CURDIR. 1307 */ 1308 Dir_InitDir(curdir); 1309 (void)Main_SetObjdir("%s", curdir); 1310 1311 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1312 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1313 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1314 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1315 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1316 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1317 1318 /* 1319 * Initialize archive, target and suffix modules in preparation for 1320 * parsing the makefile(s) 1321 */ 1322 Arch_Init(); 1323 Targ_Init(); 1324 Suff_Init(); 1325 Trace_Init(tracefile); 1326 1327 DEFAULT = NULL; 1328 (void)time(&now); 1329 1330 Trace_Log(MAKESTART, NULL); 1331 1332 InitVarTargets(); 1333 1334 /* 1335 * If no user-supplied system path was given (through the -m option) 1336 * add the directories from the DEFSYSPATH (more than one may be given 1337 * as dir1:...:dirn) to the system include path. 1338 */ 1339 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1340 if (syspath == NULL || syspath[0] == '\0') 1341 syspath = defsyspath; 1342 else 1343 syspath = bmake_strdup(syspath); 1344 1345 for (start = syspath; *start != '\0'; start = cp) { 1346 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1347 continue; 1348 if (*cp == ':') { 1349 *cp++ = '\0'; 1350 } 1351 /* look for magic parent directory search string */ 1352 if (strncmp(".../", start, 4) != 0) { 1353 (void)Dir_AddDir(defIncPath, start); 1354 } else { 1355 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1356 if (dir != NULL) { 1357 (void)Dir_AddDir(defIncPath, dir); 1358 free(dir); 1359 } 1360 } 1361 } 1362 if (syspath != defsyspath) 1363 free(syspath); 1364 1365 /* 1366 * Read in the built-in rules first, followed by the specified 1367 * makefiles, or the default makefile and Makefile, in that order, 1368 * if no makefiles were given on the command line. 1369 */ 1370 if (!noBuiltins) { 1371 StringListNode *ln; 1372 1373 sysMkPath = Lst_New(); 1374 Dir_Expand(_PATH_DEFSYSMK, 1375 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1376 sysMkPath); 1377 if (Lst_IsEmpty(sysMkPath)) 1378 Fatal("%s: no system rules (%s).", progname, 1379 _PATH_DEFSYSMK); 1380 ln = Lst_Find(sysMkPath, ReadMakefileSucceeded, NULL); 1381 if (ln == NULL) 1382 Fatal("%s: cannot open %s.", progname, 1383 (char *)sysMkPath->first->datum); 1384 } 1385 1386 if (!Lst_IsEmpty(makefiles)) { 1387 StringListNode *ln; 1388 1389 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1390 if (ln != NULL) 1391 Fatal("%s: cannot open %s.", progname, 1392 (char *)ln->datum); 1393 } else { 1394 (void)Var_Subst("${" MAKEFILE_PREFERENCE "}", 1395 VAR_CMD, VARE_WANTRES, &p1); 1396 /* TODO: handle errors */ 1397 (void)str2Lst_Append(makefiles, p1, NULL); 1398 (void)Lst_Find(makefiles, ReadMakefileSucceeded, NULL); 1399 free(p1); 1400 } 1401 1402 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1403 if (!noBuiltins || !printVars) { 1404 (void)Var_Subst("${.MAKE.DEPENDFILE:T}", 1405 VAR_CMD, VARE_WANTRES, &makeDependfile); 1406 /* TODO: handle errors */ 1407 doing_depend = TRUE; 1408 (void)ReadMakefile(makeDependfile); 1409 doing_depend = FALSE; 1410 } 1411 1412 if (enterFlagObj) 1413 printf("%s: Entering directory `%s'\n", progname, objdir); 1414 1415 MakeMode(NULL); 1416 1417 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1418 bmake_free(p1); 1419 1420 if (!forceJobs && !compatMake && 1421 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1422 char *value; 1423 int n; 1424 1425 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1426 /* TODO: handle errors */ 1427 n = (int)strtol(value, NULL, 0); 1428 if (n < 1) { 1429 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1430 progname); 1431 exit(1); 1432 } 1433 if (n != maxJobs) { 1434 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1435 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1436 } 1437 maxJobs = n; 1438 maxJobTokens = maxJobs; 1439 forceJobs = TRUE; 1440 free(value); 1441 } 1442 1443 /* 1444 * Be compatible if user did not specify -j and did not explicitly 1445 * turned compatibility on 1446 */ 1447 if (!compatMake && !forceJobs) { 1448 compatMake = TRUE; 1449 } 1450 1451 if (!compatMake) 1452 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1453 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1454 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1455 1456 if (!printVars) 1457 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1458 1459 1460 /* 1461 * For compatibility, look at the directories in the VPATH variable 1462 * and add them to the search path, if the variable is defined. The 1463 * variable's value is in the same format as the PATH envariable, i.e. 1464 * <directory>:<directory>:<directory>... 1465 */ 1466 if (Var_Exists("VPATH", VAR_CMD)) { 1467 char *vpath, savec; 1468 /* 1469 * GCC stores string constants in read-only memory, but 1470 * Var_Subst will want to write this thing, so store it 1471 * in an array 1472 */ 1473 static char VPATH[] = "${VPATH}"; 1474 1475 (void)Var_Subst(VPATH, VAR_CMD, VARE_WANTRES, &vpath); 1476 /* TODO: handle errors */ 1477 path = vpath; 1478 do { 1479 /* skip to end of directory */ 1480 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1481 continue; 1482 /* Save terminator character so know when to stop */ 1483 savec = *cp; 1484 *cp = '\0'; 1485 /* Add directory to search path */ 1486 (void)Dir_AddDir(dirSearchPath, path); 1487 *cp = savec; 1488 path = cp + 1; 1489 } while (savec == ':'); 1490 free(vpath); 1491 } 1492 1493 /* 1494 * Now that all search paths have been read for suffixes et al, it's 1495 * time to add the default search path to their lists... 1496 */ 1497 Suff_DoPaths(); 1498 1499 /* 1500 * Propagate attributes through :: dependency lists. 1501 */ 1502 Targ_Propagate(); 1503 1504 /* print the initial graph, if the user requested it */ 1505 if (DEBUG(GRAPH1)) 1506 Targ_PrintGraph(1); 1507 1508 /* print the values of any variables requested by the user */ 1509 if (printVars) { 1510 doPrintVars(); 1511 outOfDate = FALSE; 1512 } else { 1513 outOfDate = runTargets(); 1514 } 1515 1516 #ifdef CLEANUP 1517 Lst_Free(variables); 1518 Lst_Free(makefiles); 1519 Lst_Destroy(create, free); 1520 #endif 1521 1522 /* print the graph now it's been processed if the user requested it */ 1523 if (DEBUG(GRAPH2)) 1524 Targ_PrintGraph(2); 1525 1526 Trace_Log(MAKEEND, 0); 1527 1528 if (enterFlagObj) 1529 printf("%s: Leaving directory `%s'\n", progname, objdir); 1530 if (enterFlag) 1531 printf("%s: Leaving directory `%s'\n", progname, curdir); 1532 1533 #ifdef USE_META 1534 meta_finish(); 1535 #endif 1536 Suff_End(); 1537 Targ_End(); 1538 Arch_End(); 1539 Var_End(); 1540 Parse_End(); 1541 Dir_End(); 1542 Job_End(); 1543 Trace_End(); 1544 1545 return outOfDate ? 1 : 0; 1546 } 1547 1548 /* Open and parse the given makefile, with all its side effects. 1549 * 1550 * Results: 1551 * 0 if ok. -1 if couldn't open file. 1552 */ 1553 static int 1554 ReadMakefile(const char *fname) 1555 { 1556 int fd; 1557 char *name, *path = NULL; 1558 1559 if (!strcmp(fname, "-")) { 1560 Parse_File(NULL /*stdin*/, -1); 1561 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1562 } else { 1563 /* if we've chdir'd, rebuild the path name */ 1564 if (strcmp(curdir, objdir) && *fname != '/') { 1565 path = str_concat3(curdir, "/", fname); 1566 fd = open(path, O_RDONLY); 1567 if (fd != -1) { 1568 fname = path; 1569 goto found; 1570 } 1571 free(path); 1572 1573 /* If curdir failed, try objdir (ala .depend) */ 1574 path = str_concat3(objdir, "/", fname); 1575 fd = open(path, O_RDONLY); 1576 if (fd != -1) { 1577 fname = path; 1578 goto found; 1579 } 1580 } else { 1581 fd = open(fname, O_RDONLY); 1582 if (fd != -1) 1583 goto found; 1584 } 1585 /* look in -I and system include directories. */ 1586 name = Dir_FindFile(fname, parseIncPath); 1587 if (!name) 1588 name = Dir_FindFile(fname, 1589 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1590 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1591 free(name); 1592 free(path); 1593 return -1; 1594 } 1595 fname = name; 1596 /* 1597 * set the MAKEFILE variable desired by System V fans -- the 1598 * placement of the setting here means it gets set to the last 1599 * makefile specified, as it is set by SysV make. 1600 */ 1601 found: 1602 if (!doing_depend) 1603 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1604 Parse_File(fname, fd); 1605 } 1606 free(path); 1607 return 0; 1608 } 1609 1610 1611 1612 /*- 1613 * Cmd_Exec -- 1614 * Execute the command in cmd, and return the output of that command 1615 * in a string. In the output, newlines are replaced with spaces. 1616 * 1617 * Results: 1618 * A string containing the output of the command, or the empty string. 1619 * *errfmt returns a format string describing the command failure, 1620 * if any, using a single %s conversion specification. 1621 * 1622 * Side Effects: 1623 * The string must be freed by the caller. 1624 */ 1625 char * 1626 Cmd_Exec(const char *cmd, const char **errfmt) 1627 { 1628 const char *args[4]; /* Args for invoking the shell */ 1629 int fds[2]; /* Pipe streams */ 1630 int cpid; /* Child PID */ 1631 int pid; /* PID from wait() */ 1632 int status; /* command exit status */ 1633 Buffer buf; /* buffer to store the result */ 1634 ssize_t bytes_read; 1635 char *res; /* result */ 1636 size_t res_len; 1637 char *cp; 1638 int savederr; /* saved errno */ 1639 1640 *errfmt = NULL; 1641 1642 if (!shellName) 1643 Shell_Init(); 1644 /* 1645 * Set up arguments for shell 1646 */ 1647 args[0] = shellName; 1648 args[1] = "-c"; 1649 args[2] = cmd; 1650 args[3] = NULL; 1651 1652 /* 1653 * Open a pipe for fetching its output 1654 */ 1655 if (pipe(fds) == -1) { 1656 *errfmt = "Couldn't create pipe for \"%s\""; 1657 goto bad; 1658 } 1659 1660 /* 1661 * Fork 1662 */ 1663 switch (cpid = vFork()) { 1664 case 0: 1665 /* 1666 * Close input side of pipe 1667 */ 1668 (void)close(fds[0]); 1669 1670 /* 1671 * Duplicate the output stream to the shell's output, then 1672 * shut the extra thing down. Note we don't fetch the error 1673 * stream...why not? Why? 1674 */ 1675 (void)dup2(fds[1], 1); 1676 (void)close(fds[1]); 1677 1678 Var_ExportVars(); 1679 1680 (void)execv(shellPath, UNCONST(args)); 1681 _exit(1); 1682 /*NOTREACHED*/ 1683 1684 case -1: 1685 *errfmt = "Couldn't exec \"%s\""; 1686 goto bad; 1687 1688 default: 1689 /* 1690 * No need for the writing half 1691 */ 1692 (void)close(fds[1]); 1693 1694 savederr = 0; 1695 Buf_Init(&buf, 0); 1696 1697 do { 1698 char result[BUFSIZ]; 1699 bytes_read = read(fds[0], result, sizeof(result)); 1700 if (bytes_read > 0) 1701 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1702 } 1703 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1704 if (bytes_read == -1) 1705 savederr = errno; 1706 1707 /* 1708 * Close the input side of the pipe. 1709 */ 1710 (void)close(fds[0]); 1711 1712 /* 1713 * Wait for the process to exit. 1714 */ 1715 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1716 JobReapChild(pid, status, FALSE); 1717 continue; 1718 } 1719 res_len = Buf_Len(&buf); 1720 res = Buf_Destroy(&buf, FALSE); 1721 1722 if (savederr != 0) 1723 *errfmt = "Couldn't read shell's output for \"%s\""; 1724 1725 if (WIFSIGNALED(status)) 1726 *errfmt = "\"%s\" exited on a signal"; 1727 else if (WEXITSTATUS(status) != 0) 1728 *errfmt = "\"%s\" returned non-zero status"; 1729 1730 /* Convert newlines to spaces. A final newline is just stripped */ 1731 if (res_len > 0 && res[res_len - 1] == '\n') 1732 res[res_len - 1] = '\0'; 1733 for (cp = res; *cp != '\0'; cp++) 1734 if (*cp == '\n') 1735 *cp = ' '; 1736 break; 1737 } 1738 return res; 1739 bad: 1740 return bmake_strdup(""); 1741 } 1742 1743 /* Print a printf-style error message. 1744 * 1745 * This error message has no consequences, in particular it does not affect 1746 * the exit status. */ 1747 void 1748 Error(const char *fmt, ...) 1749 { 1750 va_list ap; 1751 FILE *err_file; 1752 1753 err_file = debug_file; 1754 if (err_file == stdout) 1755 err_file = stderr; 1756 (void)fflush(stdout); 1757 for (;;) { 1758 va_start(ap, fmt); 1759 fprintf(err_file, "%s: ", progname); 1760 (void)vfprintf(err_file, fmt, ap); 1761 va_end(ap); 1762 (void)fprintf(err_file, "\n"); 1763 (void)fflush(err_file); 1764 if (err_file == stderr) 1765 break; 1766 err_file = stderr; 1767 } 1768 } 1769 1770 /* Produce a Fatal error message, then exit immediately. 1771 * 1772 * If jobs are running, waits for them to finish. */ 1773 void 1774 Fatal(const char *fmt, ...) 1775 { 1776 va_list ap; 1777 1778 va_start(ap, fmt); 1779 if (jobsRunning) 1780 Job_Wait(); 1781 1782 (void)fflush(stdout); 1783 (void)vfprintf(stderr, fmt, ap); 1784 va_end(ap); 1785 (void)fprintf(stderr, "\n"); 1786 (void)fflush(stderr); 1787 1788 PrintOnError(NULL, NULL); 1789 1790 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1791 Targ_PrintGraph(2); 1792 Trace_Log(MAKEERROR, 0); 1793 exit(2); /* Not 1 so -q can distinguish error */ 1794 } 1795 1796 /* 1797 * Punt -- 1798 * Major exception once jobs are being created. Kills all jobs, prints 1799 * a message and exits. 1800 * 1801 * Results: 1802 * None 1803 * 1804 * Side Effects: 1805 * All children are killed indiscriminately and the program Lib_Exits 1806 */ 1807 void 1808 Punt(const char *fmt, ...) 1809 { 1810 va_list ap; 1811 1812 va_start(ap, fmt); 1813 (void)fflush(stdout); 1814 (void)fprintf(stderr, "%s: ", progname); 1815 (void)vfprintf(stderr, fmt, ap); 1816 va_end(ap); 1817 (void)fprintf(stderr, "\n"); 1818 (void)fflush(stderr); 1819 1820 PrintOnError(NULL, NULL); 1821 1822 DieHorribly(); 1823 } 1824 1825 /*- 1826 * DieHorribly -- 1827 * Exit without giving a message. 1828 * 1829 * Results: 1830 * None 1831 * 1832 * Side Effects: 1833 * A big one... 1834 */ 1835 void 1836 DieHorribly(void) 1837 { 1838 if (jobsRunning) 1839 Job_AbortAll(); 1840 if (DEBUG(GRAPH2)) 1841 Targ_PrintGraph(2); 1842 Trace_Log(MAKEERROR, 0); 1843 exit(2); /* Not 1, so -q can distinguish error */ 1844 } 1845 1846 /* 1847 * Finish -- 1848 * Called when aborting due to errors in child shell to signal 1849 * abnormal exit. 1850 * 1851 * Results: 1852 * None 1853 * 1854 * Side Effects: 1855 * The program exits 1856 */ 1857 void 1858 Finish(int errors) 1859 /* number of errors encountered in Make_Make */ 1860 { 1861 if (dieQuietly(NULL, -1)) 1862 exit(2); 1863 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1864 } 1865 1866 /* 1867 * eunlink -- 1868 * Remove a file carefully, avoiding directories. 1869 */ 1870 int 1871 eunlink(const char *file) 1872 { 1873 struct stat st; 1874 1875 if (lstat(file, &st) == -1) 1876 return -1; 1877 1878 if (S_ISDIR(st.st_mode)) { 1879 errno = EISDIR; 1880 return -1; 1881 } 1882 return unlink(file); 1883 } 1884 1885 static void 1886 write_all(int fd, const void *data, size_t n) 1887 { 1888 const char *mem = data; 1889 1890 while (n > 0) { 1891 ssize_t written = write(fd, mem, n); 1892 if (written == -1 && errno == EAGAIN) 1893 continue; 1894 if (written == -1) 1895 break; 1896 mem += written; 1897 n -= (size_t)written; 1898 } 1899 } 1900 1901 /* 1902 * execDie -- 1903 * Print why exec failed, avoiding stdio. 1904 */ 1905 void MAKE_ATTR_DEAD 1906 execDie(const char *af, const char *av) 1907 { 1908 Buffer buf; 1909 1910 Buf_Init(&buf, 0); 1911 Buf_AddStr(&buf, progname); 1912 Buf_AddStr(&buf, ": "); 1913 Buf_AddStr(&buf, af); 1914 Buf_AddStr(&buf, "("); 1915 Buf_AddStr(&buf, av); 1916 Buf_AddStr(&buf, ") failed ("); 1917 Buf_AddStr(&buf, strerror(errno)); 1918 Buf_AddStr(&buf, ")\n"); 1919 1920 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 1921 1922 Buf_Destroy(&buf, TRUE); 1923 _exit(1); 1924 } 1925 1926 /* 1927 * usage -- 1928 * exit with usage message 1929 */ 1930 static void 1931 usage(void) 1932 { 1933 char *p; 1934 if ((p = strchr(progname, '[')) != NULL) 1935 *p = '\0'; 1936 1937 (void)fprintf(stderr, 1938 "usage: %s [-BeikNnqrstWwX] \n" 1939 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1940 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1941 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1942 progname); 1943 exit(2); 1944 } 1945 1946 /* 1947 * realpath(3) can get expensive, cache results... 1948 */ 1949 static GNode *cached_realpaths = NULL; 1950 1951 static GNode * 1952 get_cached_realpaths(void) 1953 { 1954 1955 if (!cached_realpaths) { 1956 cached_realpaths = Targ_NewGN("Realpath"); 1957 #ifndef DEBUG_REALPATH_CACHE 1958 cached_realpaths->flags = INTERNAL; 1959 #endif 1960 } 1961 1962 return cached_realpaths; 1963 } 1964 1965 /* purge any relative paths */ 1966 static void 1967 purge_cached_realpaths(void) 1968 { 1969 GNode *cache = get_cached_realpaths(); 1970 HashEntry *he, *nhe; 1971 HashIter hi; 1972 1973 HashIter_Init(&hi, &cache->context); 1974 he = HashIter_Next(&hi); 1975 while (he != NULL) { 1976 nhe = HashIter_Next(&hi); 1977 if (he->key[0] != '/') { 1978 if (DEBUG(DIR)) 1979 fprintf(stderr, "cached_realpath: purging %s\n", he->key); 1980 Hash_DeleteEntry(&cache->context, he); 1981 } 1982 he = nhe; 1983 } 1984 } 1985 1986 char * 1987 cached_realpath(const char *pathname, char *resolved) 1988 { 1989 GNode *cache; 1990 const char *rp; 1991 char *cp; 1992 1993 if (!pathname || !pathname[0]) 1994 return NULL; 1995 1996 cache = get_cached_realpaths(); 1997 1998 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1999 /* a hit */ 2000 strncpy(resolved, rp, MAXPATHLEN); 2001 resolved[MAXPATHLEN - 1] = '\0'; 2002 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2003 Var_Set(pathname, rp, cache); 2004 } /* else should we negative-cache? */ 2005 2006 bmake_free(cp); 2007 return rp ? resolved : NULL; 2008 } 2009 2010 2011 static int 2012 addErrorCMD(void *cmdp, void *gnp) 2013 { 2014 if (cmdp == NULL) 2015 return 1; /* stop */ 2016 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2017 return 0; 2018 } 2019 2020 /* 2021 * Return true if we should die without noise. 2022 * For example our failing child was a sub-make 2023 * or failure happend elsewhere. 2024 */ 2025 int 2026 dieQuietly(GNode *gn, int bf) 2027 { 2028 static int quietly = -1; 2029 2030 if (quietly < 0) { 2031 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2032 quietly = 0; 2033 else if (bf >= 0) 2034 quietly = bf; 2035 else 2036 quietly = gn != NULL ? ((gn->type & (OP_MAKE)) != 0) : 0; 2037 } 2038 return quietly; 2039 } 2040 2041 void 2042 PrintOnError(GNode *gn, const char *s) 2043 { 2044 static GNode *en = NULL; 2045 const char *expr; 2046 char *cp; 2047 2048 if (DEBUG(HASH)) { 2049 Targ_Stats(); 2050 Var_Stats(); 2051 } 2052 2053 /* we generally want to keep quiet if a sub-make died */ 2054 if (dieQuietly(gn, -1)) 2055 return; 2056 2057 if (s) 2058 printf("%s", s); 2059 2060 printf("\n%s: stopped in %s\n", progname, curdir); 2061 2062 if (en) 2063 return; /* we've been here! */ 2064 if (gn) { 2065 /* 2066 * We can print this even if there is no .ERROR target. 2067 */ 2068 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2069 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2070 Lst_ForEachUntil(gn->commands, addErrorCMD, gn); 2071 } 2072 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2073 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2074 /* TODO: handle errors */ 2075 printf("%s", cp); 2076 free(cp); 2077 fflush(stdout); 2078 2079 /* 2080 * Finally, see if there is a .ERROR target, and run it if so. 2081 */ 2082 en = Targ_FindNode(".ERROR"); 2083 if (en) { 2084 en->type |= OP_SPECIAL; 2085 Compat_Make(en, en); 2086 } 2087 } 2088 2089 void 2090 Main_ExportMAKEFLAGS(Boolean first) 2091 { 2092 static Boolean once = TRUE; 2093 const char *expr; 2094 char *s; 2095 2096 if (once != first) 2097 return; 2098 once = FALSE; 2099 2100 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2101 (void)Var_Subst(expr, VAR_CMD, VARE_WANTRES, &s); 2102 /* TODO: handle errors */ 2103 if (s[0] != '\0') { 2104 #ifdef POSIX 2105 setenv("MAKEFLAGS", s, 1); 2106 #else 2107 setenv("MAKE", s, 1); 2108 #endif 2109 } 2110 } 2111 2112 char * 2113 getTmpdir(void) 2114 { 2115 static char *tmpdir = NULL; 2116 2117 if (!tmpdir) { 2118 struct stat st; 2119 2120 /* 2121 * Honor $TMPDIR but only if it is valid. 2122 * Ensure it ends with /. 2123 */ 2124 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2125 VARE_WANTRES, &tmpdir); 2126 /* TODO: handle errors */ 2127 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2128 free(tmpdir); 2129 tmpdir = bmake_strdup(_PATH_TMP); 2130 } 2131 } 2132 return tmpdir; 2133 } 2134 2135 /* 2136 * Create and open a temp file using "pattern". 2137 * If "fnamep" is provided set it to a copy of the filename created. 2138 * Otherwise unlink the file once open. 2139 */ 2140 int 2141 mkTempFile(const char *pattern, char **fnamep) 2142 { 2143 static char *tmpdir = NULL; 2144 char tfile[MAXPATHLEN]; 2145 int fd; 2146 2147 if (!pattern) 2148 pattern = TMPPAT; 2149 if (!tmpdir) 2150 tmpdir = getTmpdir(); 2151 if (pattern[0] == '/') { 2152 snprintf(tfile, sizeof(tfile), "%s", pattern); 2153 } else { 2154 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2155 } 2156 if ((fd = mkstemp(tfile)) < 0) 2157 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2158 if (fnamep) { 2159 *fnamep = bmake_strdup(tfile); 2160 } else { 2161 unlink(tfile); /* we just want the descriptor */ 2162 } 2163 return fd; 2164 } 2165 2166 /* 2167 * Convert a string representation of a boolean. 2168 * Anything that looks like "No", "False", "Off", "0" etc, 2169 * is FALSE, otherwise TRUE. 2170 */ 2171 Boolean 2172 s2Boolean(const char *s, Boolean bf) 2173 { 2174 if (s) { 2175 switch(*s) { 2176 case '\0': /* not set - the default wins */ 2177 break; 2178 case '0': 2179 case 'F': 2180 case 'f': 2181 case 'N': 2182 case 'n': 2183 bf = FALSE; 2184 break; 2185 case 'O': 2186 case 'o': 2187 switch (s[1]) { 2188 case 'F': 2189 case 'f': 2190 bf = FALSE; 2191 break; 2192 default: 2193 bf = TRUE; 2194 break; 2195 } 2196 break; 2197 default: 2198 bf = TRUE; 2199 break; 2200 } 2201 } 2202 return bf; 2203 } 2204 2205 /* 2206 * Return a Boolean based on setting of a knob. 2207 * 2208 * If the knob is not set, the supplied default is the return value. 2209 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2210 * is FALSE, otherwise TRUE. 2211 */ 2212 Boolean 2213 getBoolean(const char *name, Boolean fallback) 2214 { 2215 char *expr = str_concat3("${", name, ":U:tl}"); 2216 char *value; 2217 Boolean res; 2218 2219 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 2220 /* TODO: handle errors */ 2221 res = s2Boolean(value, fallback); 2222 free(value); 2223 free(expr); 2224 return res; 2225 } 2226
Indexes created Wed Sep 24 05:09:52 GMT 2025