main.c revision 1.388
1 /* $NetBSD: main.c,v 1.388 2020/10/24 20:29:40 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 1.388 2020/10/24 20:29:40 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 DebugFlags 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. */ 795 static int 796 ReadMakefileSucceeded(void *fname, void *unused) 797 { 798 return ReadMakefile(fname) == 0; 799 } 800 801 int 802 str2Lst_Append(StringList *lp, char *str, const char *sep) 803 { 804 char *cp; 805 int n; 806 807 if (!sep) 808 sep = " \t"; 809 810 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 811 Lst_Append(lp, cp); 812 n++; 813 } 814 return n; 815 } 816 817 #ifdef SIGINFO 818 /*ARGSUSED*/ 819 static void 820 siginfo(int signo MAKE_ATTR_UNUSED) 821 { 822 char dir[MAXPATHLEN]; 823 char str[2 * MAXPATHLEN]; 824 int len; 825 if (getcwd(dir, sizeof(dir)) == NULL) 826 return; 827 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 828 if (len > 0) 829 (void)write(STDERR_FILENO, str, (size_t)len); 830 } 831 #endif 832 833 /* 834 * Allow makefiles some control over the mode we run in. 835 */ 836 void 837 MakeMode(const char *mode) 838 { 839 char *mode_freeIt = NULL; 840 841 if (mode == NULL) { 842 (void)Var_Subst("${" MAKE_MODE ":tl}", 843 VAR_GLOBAL, VARE_WANTRES, &mode_freeIt); 844 /* TODO: handle errors */ 845 mode = mode_freeIt; 846 } 847 848 if (mode[0] != '\0') { 849 if (strstr(mode, "compat")) { 850 compatMake = TRUE; 851 forceJobs = FALSE; 852 } 853 #if USE_META 854 if (strstr(mode, "meta")) 855 meta_mode_init(mode); 856 #endif 857 } 858 859 free(mode_freeIt); 860 } 861 862 static void 863 PrintVar(const char *varname, Boolean expandVars) 864 { 865 if (strchr(varname, '$')) { 866 char *evalue; 867 (void)Var_Subst(varname, VAR_GLOBAL, VARE_WANTRES, &evalue); 868 /* TODO: handle errors */ 869 printf("%s\n", evalue); 870 bmake_free(evalue); 871 872 } else if (expandVars) { 873 char *expr = str_concat3("${", varname, "}"); 874 char *evalue; 875 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &evalue); 876 /* TODO: handle errors */ 877 free(expr); 878 printf("%s\n", evalue); 879 bmake_free(evalue); 880 881 } else { 882 char *freeIt; 883 const char *value = Var_Value(varname, VAR_GLOBAL, &freeIt); 884 printf("%s\n", value ? value : ""); 885 bmake_free(freeIt); 886 } 887 } 888 889 static void 890 doPrintVars(void) 891 { 892 StringListNode *ln; 893 Boolean expandVars; 894 895 if (printVars == EXPAND_VARS) 896 expandVars = TRUE; 897 else if (debugVflag) 898 expandVars = FALSE; 899 else 900 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 901 902 for (ln = variables->first; ln != NULL; ln = ln->next) { 903 const char *varname = ln->datum; 904 PrintVar(varname, expandVars); 905 } 906 } 907 908 static Boolean 909 runTargets(void) 910 { 911 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 912 Boolean outOfDate; /* FALSE if all targets up to date */ 913 914 /* 915 * Have now read the entire graph and need to make a list of 916 * targets to create. If none was given on the command line, 917 * we consult the parsing module to find the main target(s) 918 * to create. 919 */ 920 if (Lst_IsEmpty(create)) 921 targs = Parse_MainName(); 922 else 923 targs = Targ_FindList(create); 924 925 if (!compatMake) { 926 /* 927 * Initialize job module before traversing the graph 928 * now that any .BEGIN and .END targets have been read. 929 * This is done only if the -q flag wasn't given 930 * (to prevent the .BEGIN from being executed should 931 * it exist). 932 */ 933 if (!queryFlag) { 934 Job_Init(); 935 jobsRunning = TRUE; 936 } 937 938 /* Traverse the graph, checking on all the targets */ 939 outOfDate = Make_Run(targs); 940 } else { 941 /* 942 * Compat_Init will take care of creating all the 943 * targets as well as initializing the module. 944 */ 945 Compat_Run(targs); 946 outOfDate = FALSE; 947 } 948 Lst_Free(targs); 949 return outOfDate; 950 } 951 952 /* 953 * Set up the .TARGETS variable to contain the list of targets to be 954 * created. If none specified, make the variable empty -- the parser 955 * will fill the thing in with the default or .MAIN target. 956 */ 957 static void 958 InitVarTargets(void) 959 { 960 StringListNode *ln; 961 962 if (Lst_IsEmpty(create)) { 963 Var_Set(".TARGETS", "", VAR_GLOBAL); 964 return; 965 } 966 967 for (ln = create->first; ln != NULL; ln = ln->next) { 968 char *name = ln->datum; 969 Var_Append(".TARGETS", name, VAR_GLOBAL); 970 } 971 } 972 973 static const char * 974 init_machine(const struct utsname *utsname) 975 { 976 const char *machine = getenv("MACHINE"); 977 if (machine != NULL) 978 return machine; 979 980 #ifdef MAKE_NATIVE 981 return utsname->machine; 982 #else 983 #ifdef MAKE_MACHINE 984 return MAKE_MACHINE; 985 #else 986 return "unknown"; 987 #endif 988 #endif 989 } 990 991 static const char * 992 init_machine_arch(void) 993 { 994 const char *env = getenv("MACHINE_ARCH"); 995 if (env != NULL) 996 return env; 997 998 #ifdef MAKE_NATIVE 999 { 1000 struct utsname utsname; 1001 static char machine_arch_buf[sizeof(utsname.machine)]; 1002 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1003 size_t len = sizeof(machine_arch_buf); 1004 1005 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1006 &len, NULL, 0) < 0) { 1007 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1008 strerror(errno)); 1009 exit(2); 1010 } 1011 1012 return machine_arch_buf; 1013 } 1014 #else 1015 #ifndef MACHINE_ARCH 1016 #ifdef MAKE_MACHINE_ARCH 1017 return MAKE_MACHINE_ARCH; 1018 #else 1019 return "unknown"; 1020 #endif 1021 #else 1022 return MACHINE_ARCH; 1023 #endif 1024 #endif 1025 } 1026 1027 #ifndef NO_PWD_OVERRIDE 1028 /* 1029 * All this code is so that we know where we are when we start up 1030 * on a different machine with pmake. 1031 * 1032 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1033 * since the value of curdir can vary depending on how we got 1034 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1035 * or via subdir.mk in which case its likely a shell which does 1036 * not provide it. 1037 * 1038 * So, to stop it breaking this case only, we ignore PWD if 1039 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1040 */ 1041 static void 1042 HandlePWD(const struct stat *curdir_st) 1043 { 1044 char *pwd; 1045 char *prefix_freeIt, *makeobjdir_freeIt; 1046 const char *makeobjdir; 1047 struct stat pwd_st; 1048 1049 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1050 return; 1051 1052 if (Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &prefix_freeIt) != NULL) { 1053 bmake_free(prefix_freeIt); 1054 return; 1055 } 1056 1057 makeobjdir = Var_Value("MAKEOBJDIR", VAR_CMD, &makeobjdir_freeIt); 1058 if (makeobjdir != NULL && strchr(makeobjdir, '$') != NULL) 1059 goto ignore_pwd; 1060 1061 if (stat(pwd, &pwd_st) == 0 && 1062 curdir_st->st_ino == pwd_st.st_ino && 1063 curdir_st->st_dev == pwd_st.st_dev) 1064 (void)strncpy(curdir, pwd, MAXPATHLEN); 1065 1066 ignore_pwd: 1067 bmake_free(makeobjdir_freeIt); 1068 } 1069 #endif 1070 1071 /*- 1072 * main -- 1073 * The main function, for obvious reasons. Initializes variables 1074 * and a few modules, then parses the arguments give it in the 1075 * environment and on the command line. Reads the system makefile 1076 * followed by either Makefile, makefile or the file given by the 1077 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 1078 * flags it has received by then uses either the Make or the Compat 1079 * module to create the initial list of targets. 1080 * 1081 * Results: 1082 * If -q was given, exits -1 if anything was out-of-date. Else it exits 1083 * 0. 1084 * 1085 * Side Effects: 1086 * The program exits when done. Targets are created. etc. etc. etc. 1087 */ 1088 int 1089 main(int argc, char **argv) 1090 { 1091 Boolean outOfDate; /* FALSE if all targets up to date */ 1092 struct stat sa; 1093 char *p1, *path; 1094 char mdpath[MAXPATHLEN]; 1095 const char *machine; 1096 const char *machine_arch; 1097 char *syspath = getenv("MAKESYSPATH"); 1098 StringList *sysMkPath; /* Path of sys.mk */ 1099 char *cp = NULL, *start; 1100 /* avoid faults on read-only strings */ 1101 static char defsyspath[] = _PATH_DEFSYSPATH; 1102 struct timeval rightnow; /* to initialize random seed */ 1103 struct utsname utsname; 1104 1105 /* default to writing debug to stderr */ 1106 debug_file = stderr; 1107 1108 #ifdef SIGINFO 1109 (void)bmake_signal(SIGINFO, siginfo); 1110 #endif 1111 /* 1112 * Set the seed to produce a different random sequence 1113 * on each program execution. 1114 */ 1115 gettimeofday(&rightnow, NULL); 1116 srandom((unsigned int)(rightnow.tv_sec + rightnow.tv_usec)); 1117 1118 if ((progname = strrchr(argv[0], '/')) != NULL) 1119 progname++; 1120 else 1121 progname = argv[0]; 1122 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1123 /* 1124 * get rid of resource limit on file descriptors 1125 */ 1126 { 1127 struct rlimit rl; 1128 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1129 rl.rlim_cur != rl.rlim_max) { 1130 rl.rlim_cur = rl.rlim_max; 1131 (void)setrlimit(RLIMIT_NOFILE, &rl); 1132 } 1133 } 1134 #endif 1135 1136 if (uname(&utsname) == -1) { 1137 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1138 strerror(errno)); 1139 exit(2); 1140 } 1141 1142 /* 1143 * Get the name of this type of MACHINE from utsname 1144 * so we can share an executable for similar machines. 1145 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1146 * 1147 * Note that both MACHINE and MACHINE_ARCH are decided at 1148 * run-time. 1149 */ 1150 machine = init_machine(&utsname); 1151 machine_arch = init_machine_arch(); 1152 1153 myPid = getpid(); /* remember this for vFork() */ 1154 1155 /* 1156 * Just in case MAKEOBJDIR wants us to do something tricky. 1157 */ 1158 Var_Init(); /* Initialize the lists of variables for 1159 * parsing arguments */ 1160 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1161 Var_Set("MACHINE", machine, VAR_GLOBAL); 1162 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1163 #ifdef MAKE_VERSION 1164 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1165 #endif 1166 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1167 /* 1168 * This is the traditional preference for makefiles. 1169 */ 1170 #ifndef MAKEFILE_PREFERENCE_LIST 1171 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1172 #endif 1173 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1174 VAR_GLOBAL); 1175 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1176 1177 create = Lst_New(); 1178 makefiles = Lst_New(); 1179 printVars = 0; 1180 debugVflag = FALSE; 1181 variables = Lst_New(); 1182 beSilent = FALSE; /* Print commands as executed */ 1183 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1184 noExecute = FALSE; /* Execute all commands */ 1185 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1186 keepgoing = FALSE; /* Stop on error */ 1187 allPrecious = FALSE; /* Remove targets when interrupted */ 1188 deleteOnError = FALSE; /* Historical default behavior */ 1189 queryFlag = FALSE; /* This is not just a check-run */ 1190 noBuiltins = FALSE; /* Read the built-in rules */ 1191 touchFlag = FALSE; /* Actually update targets */ 1192 debug = 0; /* No debug verbosity, please. */ 1193 jobsRunning = FALSE; 1194 1195 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1196 maxJobTokens = maxJobs; 1197 compatMake = FALSE; /* No compat mode */ 1198 ignorePWD = FALSE; 1199 1200 /* 1201 * Initialize the parsing, directory and variable modules to prepare 1202 * for the reading of inclusion paths and variable settings on the 1203 * command line 1204 */ 1205 1206 /* 1207 * Initialize various variables. 1208 * MAKE also gets this name, for compatibility 1209 * .MAKEFLAGS gets set to the empty string just in case. 1210 * MFLAGS also gets initialized empty, for compatibility. 1211 */ 1212 Parse_Init(); 1213 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1214 /* 1215 * Leave alone if it is an absolute path, or if it does 1216 * not contain a '/' in which case we need to find it in 1217 * the path, like execvp(3) and the shells do. 1218 */ 1219 p1 = argv[0]; 1220 } else { 1221 struct stat sb; 1222 /* 1223 * A relative path, canonicalize it. 1224 */ 1225 p1 = cached_realpath(argv[0], mdpath); 1226 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1227 p1 = argv[0]; /* realpath failed */ 1228 } 1229 } 1230 Var_Set("MAKE", p1, VAR_GLOBAL); 1231 Var_Set(".MAKE", p1, VAR_GLOBAL); 1232 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1233 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1234 Var_Set("MFLAGS", "", VAR_GLOBAL); 1235 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1236 /* some makefiles need to know this */ 1237 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1238 1239 /* 1240 * Set some other useful macros 1241 */ 1242 { 1243 char tmp[64], *ep; 1244 1245 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1246 if (makelevel < 0) 1247 makelevel = 0; 1248 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1249 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1250 snprintf(tmp, sizeof(tmp), "%u", myPid); 1251 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1252 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1253 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1254 } 1255 if (makelevel > 0) { 1256 char pn[1024]; 1257 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1258 progname = bmake_strdup(pn); 1259 } 1260 1261 #ifdef USE_META 1262 meta_init(); 1263 #endif 1264 Dir_Init(); 1265 1266 /* 1267 * First snag any flags out of the MAKE environment variable. 1268 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1269 * in a different format). 1270 */ 1271 #ifdef POSIX 1272 p1 = explode(getenv("MAKEFLAGS")); 1273 Main_ParseArgLine(p1); 1274 free(p1); 1275 #else 1276 Main_ParseArgLine(getenv("MAKE")); 1277 #endif 1278 1279 /* 1280 * Find where we are (now). 1281 * We take care of PWD for the automounter below... 1282 */ 1283 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1284 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1285 progname, strerror(errno)); 1286 exit(2); 1287 } 1288 1289 MainParseArgs(argc, argv); 1290 1291 if (enterFlag) 1292 printf("%s: Entering directory `%s'\n", progname, curdir); 1293 1294 /* 1295 * Verify that cwd is sane. 1296 */ 1297 if (stat(curdir, &sa) == -1) { 1298 (void)fprintf(stderr, "%s: %s: %s.\n", 1299 progname, curdir, strerror(errno)); 1300 exit(2); 1301 } 1302 1303 #ifndef NO_PWD_OVERRIDE 1304 HandlePWD(&sa); 1305 #endif 1306 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1307 1308 /* 1309 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1310 * MAKEOBJDIR is set in the environment, try only that value 1311 * and fall back to .CURDIR if it does not exist. 1312 * 1313 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1314 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1315 * of these paths exist, just use .CURDIR. 1316 */ 1317 Dir_InitDir(curdir); 1318 (void)Main_SetObjdir("%s", curdir); 1319 1320 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1321 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1322 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1323 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1324 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1325 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1326 1327 /* 1328 * Initialize archive, target and suffix modules in preparation for 1329 * parsing the makefile(s) 1330 */ 1331 Arch_Init(); 1332 Targ_Init(); 1333 Suff_Init(); 1334 Trace_Init(tracefile); 1335 1336 DEFAULT = NULL; 1337 (void)time(&now); 1338 1339 Trace_Log(MAKESTART, NULL); 1340 1341 InitVarTargets(); 1342 1343 /* 1344 * If no user-supplied system path was given (through the -m option) 1345 * add the directories from the DEFSYSPATH (more than one may be given 1346 * as dir1:...:dirn) to the system include path. 1347 */ 1348 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1349 if (syspath == NULL || syspath[0] == '\0') 1350 syspath = defsyspath; 1351 else 1352 syspath = bmake_strdup(syspath); 1353 1354 for (start = syspath; *start != '\0'; start = cp) { 1355 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1356 continue; 1357 if (*cp == ':') { 1358 *cp++ = '\0'; 1359 } 1360 /* look for magic parent directory search string */ 1361 if (strncmp(".../", start, 4) != 0) { 1362 (void)Dir_AddDir(defIncPath, start); 1363 } else { 1364 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1365 if (dir != NULL) { 1366 (void)Dir_AddDir(defIncPath, dir); 1367 free(dir); 1368 } 1369 } 1370 } 1371 if (syspath != defsyspath) 1372 free(syspath); 1373 1374 /* 1375 * Read in the built-in rules first, followed by the specified 1376 * makefiles, or the default makefile and Makefile, in that order, 1377 * if no makefiles were given on the command line. 1378 */ 1379 if (!noBuiltins) { 1380 sysMkPath = Lst_New(); 1381 Dir_Expand(_PATH_DEFSYSMK, 1382 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1383 sysMkPath); 1384 if (Lst_IsEmpty(sysMkPath)) 1385 Fatal("%s: no system rules (%s).", progname, 1386 _PATH_DEFSYSMK); 1387 if (!Lst_ForEachUntil(sysMkPath, ReadMakefileSucceeded, NULL)) 1388 Fatal("%s: cannot open %s.", progname, 1389 (char *)sysMkPath->first->datum); 1390 } 1391 1392 if (makefiles->first != NULL) { 1393 StringListNode *ln; 1394 1395 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1396 if (ReadMakefile(ln->datum) != 0) 1397 Fatal("%s: cannot open %s.", 1398 progname, (char *)ln->datum); 1399 } 1400 } else { 1401 (void)Var_Subst("${" MAKEFILE_PREFERENCE "}", 1402 VAR_CMD, VARE_WANTRES, &p1); 1403 /* TODO: handle errors */ 1404 (void)str2Lst_Append(makefiles, p1, NULL); 1405 (void)Lst_ForEachUntil(makefiles, ReadMakefileSucceeded, NULL); 1406 free(p1); 1407 } 1408 1409 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1410 if (!noBuiltins || !printVars) { 1411 (void)Var_Subst("${.MAKE.DEPENDFILE:T}", 1412 VAR_CMD, VARE_WANTRES, &makeDependfile); 1413 /* TODO: handle errors */ 1414 doing_depend = TRUE; 1415 (void)ReadMakefile(makeDependfile); 1416 doing_depend = FALSE; 1417 } 1418 1419 if (enterFlagObj) 1420 printf("%s: Entering directory `%s'\n", progname, objdir); 1421 1422 MakeMode(NULL); 1423 1424 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1425 bmake_free(p1); 1426 1427 if (!forceJobs && !compatMake && 1428 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1429 char *value; 1430 int n; 1431 1432 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1433 /* TODO: handle errors */ 1434 n = (int)strtol(value, NULL, 0); 1435 if (n < 1) { 1436 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1437 progname); 1438 exit(1); 1439 } 1440 if (n != maxJobs) { 1441 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1442 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1443 } 1444 maxJobs = n; 1445 maxJobTokens = maxJobs; 1446 forceJobs = TRUE; 1447 free(value); 1448 } 1449 1450 /* 1451 * Be compatible if user did not specify -j and did not explicitly 1452 * turned compatibility on 1453 */ 1454 if (!compatMake && !forceJobs) { 1455 compatMake = TRUE; 1456 } 1457 1458 if (!compatMake) 1459 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1460 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1461 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1462 1463 if (!printVars) 1464 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1465 1466 1467 /* 1468 * For compatibility, look at the directories in the VPATH variable 1469 * and add them to the search path, if the variable is defined. The 1470 * variable's value is in the same format as the PATH envariable, i.e. 1471 * <directory>:<directory>:<directory>... 1472 */ 1473 if (Var_Exists("VPATH", VAR_CMD)) { 1474 char *vpath, savec; 1475 /* 1476 * GCC stores string constants in read-only memory, but 1477 * Var_Subst will want to write this thing, so store it 1478 * in an array 1479 */ 1480 static char VPATH[] = "${VPATH}"; 1481 1482 (void)Var_Subst(VPATH, VAR_CMD, VARE_WANTRES, &vpath); 1483 /* TODO: handle errors */ 1484 path = vpath; 1485 do { 1486 /* skip to end of directory */ 1487 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1488 continue; 1489 /* Save terminator character so know when to stop */ 1490 savec = *cp; 1491 *cp = '\0'; 1492 /* Add directory to search path */ 1493 (void)Dir_AddDir(dirSearchPath, path); 1494 *cp = savec; 1495 path = cp + 1; 1496 } while (savec == ':'); 1497 free(vpath); 1498 } 1499 1500 /* 1501 * Now that all search paths have been read for suffixes et al, it's 1502 * time to add the default search path to their lists... 1503 */ 1504 Suff_DoPaths(); 1505 1506 /* 1507 * Propagate attributes through :: dependency lists. 1508 */ 1509 Targ_Propagate(); 1510 1511 /* print the initial graph, if the user requested it */ 1512 if (DEBUG(GRAPH1)) 1513 Targ_PrintGraph(1); 1514 1515 /* print the values of any variables requested by the user */ 1516 if (printVars) { 1517 doPrintVars(); 1518 outOfDate = FALSE; 1519 } else { 1520 outOfDate = runTargets(); 1521 } 1522 1523 #ifdef CLEANUP 1524 Lst_Free(variables); 1525 Lst_Free(makefiles); 1526 Lst_Destroy(create, free); 1527 #endif 1528 1529 /* print the graph now it's been processed if the user requested it */ 1530 if (DEBUG(GRAPH2)) 1531 Targ_PrintGraph(2); 1532 1533 Trace_Log(MAKEEND, 0); 1534 1535 if (enterFlagObj) 1536 printf("%s: Leaving directory `%s'\n", progname, objdir); 1537 if (enterFlag) 1538 printf("%s: Leaving directory `%s'\n", progname, curdir); 1539 1540 #ifdef USE_META 1541 meta_finish(); 1542 #endif 1543 Suff_End(); 1544 Targ_End(); 1545 Arch_End(); 1546 Var_End(); 1547 Parse_End(); 1548 Dir_End(); 1549 Job_End(); 1550 Trace_End(); 1551 1552 return outOfDate ? 1 : 0; 1553 } 1554 1555 /* Open and parse the given makefile, with all its side effects. 1556 * 1557 * Results: 1558 * 0 if ok. -1 if couldn't open file. 1559 */ 1560 static int 1561 ReadMakefile(const char *fname) 1562 { 1563 int fd; 1564 char *name, *path = NULL; 1565 1566 if (!strcmp(fname, "-")) { 1567 Parse_File(NULL /*stdin*/, -1); 1568 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1569 } else { 1570 /* if we've chdir'd, rebuild the path name */ 1571 if (strcmp(curdir, objdir) && *fname != '/') { 1572 path = str_concat3(curdir, "/", fname); 1573 fd = open(path, O_RDONLY); 1574 if (fd != -1) { 1575 fname = path; 1576 goto found; 1577 } 1578 free(path); 1579 1580 /* If curdir failed, try objdir (ala .depend) */ 1581 path = str_concat3(objdir, "/", fname); 1582 fd = open(path, O_RDONLY); 1583 if (fd != -1) { 1584 fname = path; 1585 goto found; 1586 } 1587 } else { 1588 fd = open(fname, O_RDONLY); 1589 if (fd != -1) 1590 goto found; 1591 } 1592 /* look in -I and system include directories. */ 1593 name = Dir_FindFile(fname, parseIncPath); 1594 if (!name) 1595 name = Dir_FindFile(fname, 1596 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1597 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1598 free(name); 1599 free(path); 1600 return -1; 1601 } 1602 fname = name; 1603 /* 1604 * set the MAKEFILE variable desired by System V fans -- the 1605 * placement of the setting here means it gets set to the last 1606 * makefile specified, as it is set by SysV make. 1607 */ 1608 found: 1609 if (!doing_depend) 1610 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1611 Parse_File(fname, fd); 1612 } 1613 free(path); 1614 return 0; 1615 } 1616 1617 1618 1619 /*- 1620 * Cmd_Exec -- 1621 * Execute the command in cmd, and return the output of that command 1622 * in a string. In the output, newlines are replaced with spaces. 1623 * 1624 * Results: 1625 * A string containing the output of the command, or the empty string. 1626 * *errfmt returns a format string describing the command failure, 1627 * if any, using a single %s conversion specification. 1628 * 1629 * Side Effects: 1630 * The string must be freed by the caller. 1631 */ 1632 char * 1633 Cmd_Exec(const char *cmd, const char **errfmt) 1634 { 1635 const char *args[4]; /* Args for invoking the shell */ 1636 int fds[2]; /* Pipe streams */ 1637 int cpid; /* Child PID */ 1638 int pid; /* PID from wait() */ 1639 int status; /* command exit status */ 1640 Buffer buf; /* buffer to store the result */ 1641 ssize_t bytes_read; 1642 char *res; /* result */ 1643 size_t res_len; 1644 char *cp; 1645 int savederr; /* saved errno */ 1646 1647 *errfmt = NULL; 1648 1649 if (!shellName) 1650 Shell_Init(); 1651 /* 1652 * Set up arguments for shell 1653 */ 1654 args[0] = shellName; 1655 args[1] = "-c"; 1656 args[2] = cmd; 1657 args[3] = NULL; 1658 1659 /* 1660 * Open a pipe for fetching its output 1661 */ 1662 if (pipe(fds) == -1) { 1663 *errfmt = "Couldn't create pipe for \"%s\""; 1664 goto bad; 1665 } 1666 1667 /* 1668 * Fork 1669 */ 1670 switch (cpid = vFork()) { 1671 case 0: 1672 /* 1673 * Close input side of pipe 1674 */ 1675 (void)close(fds[0]); 1676 1677 /* 1678 * Duplicate the output stream to the shell's output, then 1679 * shut the extra thing down. Note we don't fetch the error 1680 * stream...why not? Why? 1681 */ 1682 (void)dup2(fds[1], 1); 1683 (void)close(fds[1]); 1684 1685 Var_ExportVars(); 1686 1687 (void)execv(shellPath, UNCONST(args)); 1688 _exit(1); 1689 /*NOTREACHED*/ 1690 1691 case -1: 1692 *errfmt = "Couldn't exec \"%s\""; 1693 goto bad; 1694 1695 default: 1696 /* 1697 * No need for the writing half 1698 */ 1699 (void)close(fds[1]); 1700 1701 savederr = 0; 1702 Buf_Init(&buf, 0); 1703 1704 do { 1705 char result[BUFSIZ]; 1706 bytes_read = read(fds[0], result, sizeof(result)); 1707 if (bytes_read > 0) 1708 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1709 } 1710 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1711 if (bytes_read == -1) 1712 savederr = errno; 1713 1714 /* 1715 * Close the input side of the pipe. 1716 */ 1717 (void)close(fds[0]); 1718 1719 /* 1720 * Wait for the process to exit. 1721 */ 1722 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1723 JobReapChild(pid, status, FALSE); 1724 continue; 1725 } 1726 res_len = Buf_Len(&buf); 1727 res = Buf_Destroy(&buf, FALSE); 1728 1729 if (savederr != 0) 1730 *errfmt = "Couldn't read shell's output for \"%s\""; 1731 1732 if (WIFSIGNALED(status)) 1733 *errfmt = "\"%s\" exited on a signal"; 1734 else if (WEXITSTATUS(status) != 0) 1735 *errfmt = "\"%s\" returned non-zero status"; 1736 1737 /* Convert newlines to spaces. A final newline is just stripped */ 1738 if (res_len > 0 && res[res_len - 1] == '\n') 1739 res[res_len - 1] = '\0'; 1740 for (cp = res; *cp != '\0'; cp++) 1741 if (*cp == '\n') 1742 *cp = ' '; 1743 break; 1744 } 1745 return res; 1746 bad: 1747 return bmake_strdup(""); 1748 } 1749 1750 /* Print a printf-style error message. 1751 * 1752 * This error message has no consequences, in particular it does not affect 1753 * the exit status. */ 1754 void 1755 Error(const char *fmt, ...) 1756 { 1757 va_list ap; 1758 FILE *err_file; 1759 1760 err_file = debug_file; 1761 if (err_file == stdout) 1762 err_file = stderr; 1763 (void)fflush(stdout); 1764 for (;;) { 1765 va_start(ap, fmt); 1766 fprintf(err_file, "%s: ", progname); 1767 (void)vfprintf(err_file, fmt, ap); 1768 va_end(ap); 1769 (void)fprintf(err_file, "\n"); 1770 (void)fflush(err_file); 1771 if (err_file == stderr) 1772 break; 1773 err_file = stderr; 1774 } 1775 } 1776 1777 /* Produce a Fatal error message, then exit immediately. 1778 * 1779 * If jobs are running, waits for them to finish. */ 1780 void 1781 Fatal(const char *fmt, ...) 1782 { 1783 va_list ap; 1784 1785 va_start(ap, fmt); 1786 if (jobsRunning) 1787 Job_Wait(); 1788 1789 (void)fflush(stdout); 1790 (void)vfprintf(stderr, fmt, ap); 1791 va_end(ap); 1792 (void)fprintf(stderr, "\n"); 1793 (void)fflush(stderr); 1794 1795 PrintOnError(NULL, NULL); 1796 1797 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1798 Targ_PrintGraph(2); 1799 Trace_Log(MAKEERROR, 0); 1800 exit(2); /* Not 1 so -q can distinguish error */ 1801 } 1802 1803 /* 1804 * Punt -- 1805 * Major exception once jobs are being created. Kills all jobs, prints 1806 * a message and exits. 1807 * 1808 * Results: 1809 * None 1810 * 1811 * Side Effects: 1812 * All children are killed indiscriminately and the program Lib_Exits 1813 */ 1814 void 1815 Punt(const char *fmt, ...) 1816 { 1817 va_list ap; 1818 1819 va_start(ap, fmt); 1820 (void)fflush(stdout); 1821 (void)fprintf(stderr, "%s: ", progname); 1822 (void)vfprintf(stderr, fmt, ap); 1823 va_end(ap); 1824 (void)fprintf(stderr, "\n"); 1825 (void)fflush(stderr); 1826 1827 PrintOnError(NULL, NULL); 1828 1829 DieHorribly(); 1830 } 1831 1832 /*- 1833 * DieHorribly -- 1834 * Exit without giving a message. 1835 * 1836 * Results: 1837 * None 1838 * 1839 * Side Effects: 1840 * A big one... 1841 */ 1842 void 1843 DieHorribly(void) 1844 { 1845 if (jobsRunning) 1846 Job_AbortAll(); 1847 if (DEBUG(GRAPH2)) 1848 Targ_PrintGraph(2); 1849 Trace_Log(MAKEERROR, 0); 1850 exit(2); /* Not 1, so -q can distinguish error */ 1851 } 1852 1853 /* 1854 * Finish -- 1855 * Called when aborting due to errors in child shell to signal 1856 * abnormal exit. 1857 * 1858 * Results: 1859 * None 1860 * 1861 * Side Effects: 1862 * The program exits 1863 */ 1864 void 1865 Finish(int errors) 1866 /* number of errors encountered in Make_Make */ 1867 { 1868 if (dieQuietly(NULL, -1)) 1869 exit(2); 1870 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1871 } 1872 1873 /* 1874 * eunlink -- 1875 * Remove a file carefully, avoiding directories. 1876 */ 1877 int 1878 eunlink(const char *file) 1879 { 1880 struct stat st; 1881 1882 if (lstat(file, &st) == -1) 1883 return -1; 1884 1885 if (S_ISDIR(st.st_mode)) { 1886 errno = EISDIR; 1887 return -1; 1888 } 1889 return unlink(file); 1890 } 1891 1892 static void 1893 write_all(int fd, const void *data, size_t n) 1894 { 1895 const char *mem = data; 1896 1897 while (n > 0) { 1898 ssize_t written = write(fd, mem, n); 1899 if (written == -1 && errno == EAGAIN) 1900 continue; 1901 if (written == -1) 1902 break; 1903 mem += written; 1904 n -= (size_t)written; 1905 } 1906 } 1907 1908 /* 1909 * execDie -- 1910 * Print why exec failed, avoiding stdio. 1911 */ 1912 void MAKE_ATTR_DEAD 1913 execDie(const char *af, const char *av) 1914 { 1915 Buffer buf; 1916 1917 Buf_Init(&buf, 0); 1918 Buf_AddStr(&buf, progname); 1919 Buf_AddStr(&buf, ": "); 1920 Buf_AddStr(&buf, af); 1921 Buf_AddStr(&buf, "("); 1922 Buf_AddStr(&buf, av); 1923 Buf_AddStr(&buf, ") failed ("); 1924 Buf_AddStr(&buf, strerror(errno)); 1925 Buf_AddStr(&buf, ")\n"); 1926 1927 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 1928 1929 Buf_Destroy(&buf, TRUE); 1930 _exit(1); 1931 } 1932 1933 /* 1934 * usage -- 1935 * exit with usage message 1936 */ 1937 static void 1938 usage(void) 1939 { 1940 char *p; 1941 if ((p = strchr(progname, '[')) != NULL) 1942 *p = '\0'; 1943 1944 (void)fprintf(stderr, 1945 "usage: %s [-BeikNnqrstWwX] \n" 1946 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1947 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1948 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1949 progname); 1950 exit(2); 1951 } 1952 1953 /* 1954 * realpath(3) can get expensive, cache results... 1955 */ 1956 static GNode *cached_realpaths = NULL; 1957 1958 static GNode * 1959 get_cached_realpaths(void) 1960 { 1961 1962 if (!cached_realpaths) { 1963 cached_realpaths = Targ_NewGN("Realpath"); 1964 #ifndef DEBUG_REALPATH_CACHE 1965 cached_realpaths->flags = INTERNAL; 1966 #endif 1967 } 1968 1969 return cached_realpaths; 1970 } 1971 1972 /* purge any relative paths */ 1973 static void 1974 purge_cached_realpaths(void) 1975 { 1976 GNode *cache = get_cached_realpaths(); 1977 HashEntry *he, *nhe; 1978 HashIter hi; 1979 1980 HashIter_Init(&hi, &cache->context); 1981 he = HashIter_Next(&hi); 1982 while (he != NULL) { 1983 nhe = HashIter_Next(&hi); 1984 if (he->key[0] != '/') { 1985 if (DEBUG(DIR)) 1986 fprintf(stderr, "cached_realpath: purging %s\n", he->key); 1987 Hash_DeleteEntry(&cache->context, he); 1988 } 1989 he = nhe; 1990 } 1991 } 1992 1993 char * 1994 cached_realpath(const char *pathname, char *resolved) 1995 { 1996 GNode *cache; 1997 const char *rp; 1998 char *cp; 1999 2000 if (!pathname || !pathname[0]) 2001 return NULL; 2002 2003 cache = get_cached_realpaths(); 2004 2005 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 2006 /* a hit */ 2007 strncpy(resolved, rp, MAXPATHLEN); 2008 resolved[MAXPATHLEN - 1] = '\0'; 2009 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2010 Var_Set(pathname, rp, cache); 2011 } /* else should we negative-cache? */ 2012 2013 bmake_free(cp); 2014 return rp ? resolved : NULL; 2015 } 2016 2017 /* 2018 * Return true if we should die without noise. 2019 * For example our failing child was a sub-make 2020 * or failure happend elsewhere. 2021 */ 2022 int 2023 dieQuietly(GNode *gn, int bf) 2024 { 2025 static int quietly = -1; 2026 2027 if (quietly < 0) { 2028 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2029 quietly = 0; 2030 else if (bf >= 0) 2031 quietly = bf; 2032 else 2033 quietly = gn != NULL ? ((gn->type & (OP_MAKE)) != 0) : 0; 2034 } 2035 return quietly; 2036 } 2037 2038 static void 2039 SetErrorVars(GNode *gn) 2040 { 2041 StringListNode *ln; 2042 2043 /* 2044 * We can print this even if there is no .ERROR target. 2045 */ 2046 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2047 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2048 2049 for (ln = gn->commands->first; ln != NULL; ln = ln->next) { 2050 const char *cmd = ln->datum; 2051 2052 if (cmd == NULL) 2053 break; 2054 Var_Append(".ERROR_CMD", cmd, VAR_GLOBAL); 2055 } 2056 } 2057 2058 void 2059 PrintOnError(GNode *gn, const char *s) 2060 { 2061 static GNode *en = NULL; 2062 const char *expr; 2063 char *cp; 2064 2065 if (DEBUG(HASH)) { 2066 Targ_Stats(); 2067 Var_Stats(); 2068 } 2069 2070 /* we generally want to keep quiet if a sub-make died */ 2071 if (dieQuietly(gn, -1)) 2072 return; 2073 2074 if (s) 2075 printf("%s", s); 2076 2077 printf("\n%s: stopped in %s\n", progname, curdir); 2078 2079 if (en) 2080 return; /* we've been here! */ 2081 if (gn) 2082 SetErrorVars(gn); 2083 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2084 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2085 /* TODO: handle errors */ 2086 printf("%s", cp); 2087 free(cp); 2088 fflush(stdout); 2089 2090 /* 2091 * Finally, see if there is a .ERROR target, and run it if so. 2092 */ 2093 en = Targ_FindNode(".ERROR"); 2094 if (en) { 2095 en->type |= OP_SPECIAL; 2096 Compat_Make(en, en); 2097 } 2098 } 2099 2100 void 2101 Main_ExportMAKEFLAGS(Boolean first) 2102 { 2103 static Boolean once = TRUE; 2104 const char *expr; 2105 char *s; 2106 2107 if (once != first) 2108 return; 2109 once = FALSE; 2110 2111 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2112 (void)Var_Subst(expr, VAR_CMD, VARE_WANTRES, &s); 2113 /* TODO: handle errors */ 2114 if (s[0] != '\0') { 2115 #ifdef POSIX 2116 setenv("MAKEFLAGS", s, 1); 2117 #else 2118 setenv("MAKE", s, 1); 2119 #endif 2120 } 2121 } 2122 2123 char * 2124 getTmpdir(void) 2125 { 2126 static char *tmpdir = NULL; 2127 2128 if (!tmpdir) { 2129 struct stat st; 2130 2131 /* 2132 * Honor $TMPDIR but only if it is valid. 2133 * Ensure it ends with /. 2134 */ 2135 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2136 VARE_WANTRES, &tmpdir); 2137 /* TODO: handle errors */ 2138 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2139 free(tmpdir); 2140 tmpdir = bmake_strdup(_PATH_TMP); 2141 } 2142 } 2143 return tmpdir; 2144 } 2145 2146 /* 2147 * Create and open a temp file using "pattern". 2148 * If "fnamep" is provided set it to a copy of the filename created. 2149 * Otherwise unlink the file once open. 2150 */ 2151 int 2152 mkTempFile(const char *pattern, char **fnamep) 2153 { 2154 static char *tmpdir = NULL; 2155 char tfile[MAXPATHLEN]; 2156 int fd; 2157 2158 if (!pattern) 2159 pattern = TMPPAT; 2160 if (!tmpdir) 2161 tmpdir = getTmpdir(); 2162 if (pattern[0] == '/') { 2163 snprintf(tfile, sizeof(tfile), "%s", pattern); 2164 } else { 2165 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2166 } 2167 if ((fd = mkstemp(tfile)) < 0) 2168 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2169 if (fnamep) { 2170 *fnamep = bmake_strdup(tfile); 2171 } else { 2172 unlink(tfile); /* we just want the descriptor */ 2173 } 2174 return fd; 2175 } 2176 2177 /* 2178 * Convert a string representation of a boolean. 2179 * Anything that looks like "No", "False", "Off", "0" etc, 2180 * is FALSE, otherwise TRUE. 2181 */ 2182 Boolean 2183 s2Boolean(const char *s, Boolean bf) 2184 { 2185 if (s) { 2186 switch(*s) { 2187 case '\0': /* not set - the default wins */ 2188 break; 2189 case '0': 2190 case 'F': 2191 case 'f': 2192 case 'N': 2193 case 'n': 2194 bf = FALSE; 2195 break; 2196 case 'O': 2197 case 'o': 2198 switch (s[1]) { 2199 case 'F': 2200 case 'f': 2201 bf = FALSE; 2202 break; 2203 default: 2204 bf = TRUE; 2205 break; 2206 } 2207 break; 2208 default: 2209 bf = TRUE; 2210 break; 2211 } 2212 } 2213 return bf; 2214 } 2215 2216 /* 2217 * Return a Boolean based on setting of a knob. 2218 * 2219 * If the knob is not set, the supplied default is the return value. 2220 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2221 * is FALSE, otherwise TRUE. 2222 */ 2223 Boolean 2224 getBoolean(const char *name, Boolean fallback) 2225 { 2226 char *expr = str_concat3("${", name, ":U:tl}"); 2227 char *value; 2228 Boolean res; 2229 2230 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 2231 /* TODO: handle errors */ 2232 res = s2Boolean(value, fallback); 2233 free(value); 2234 free(expr); 2235 return res; 2236 } 2237
Indexes created Tue Sep 23 07:09:52 GMT 2025