main.c revision 1.383
1 /* $NetBSD: main.c,v 1.383 2020/10/22 07:01:25 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 1.383 2020/10/22 07:01:25 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("${" MAKE_MODE ":tl}", 851 VAR_GLOBAL, VARE_WANTRES, &mode_freeIt); 852 /* TODO: handle errors */ 853 mode = mode_freeIt; 854 } 855 856 if (mode[0] != '\0') { 857 if (strstr(mode, "compat")) { 858 compatMake = TRUE; 859 forceJobs = FALSE; 860 } 861 #if USE_META 862 if (strstr(mode, "meta")) 863 meta_mode_init(mode); 864 #endif 865 } 866 867 free(mode_freeIt); 868 } 869 870 static void 871 PrintVar(const char *varname, Boolean expandVars) 872 { 873 const char *value; 874 char *p1; 875 876 if (strchr(varname, '$')) { 877 (void)Var_Subst(varname, VAR_GLOBAL, VARE_WANTRES, &p1); 878 /* TODO: handle errors */ 879 value = p1; 880 } else if (expandVars) { 881 char *expr = str_concat3("${", varname, "}"); 882 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &p1); 883 /* TODO: handle errors */ 884 value = p1; 885 free(expr); 886 } else { 887 value = Var_Value(varname, VAR_GLOBAL, &p1); 888 } 889 printf("%s\n", value ? value : ""); 890 bmake_free(p1); 891 } 892 893 static void 894 doPrintVars(void) 895 { 896 StringListNode *ln; 897 Boolean expandVars; 898 899 if (printVars == EXPAND_VARS) 900 expandVars = TRUE; 901 else if (debugVflag) 902 expandVars = FALSE; 903 else 904 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 905 906 for (ln = variables->first; ln != NULL; ln = ln->next) { 907 const char *varname = ln->datum; 908 PrintVar(varname, expandVars); 909 } 910 } 911 912 static Boolean 913 runTargets(void) 914 { 915 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 916 Boolean outOfDate; /* FALSE if all targets up to date */ 917 918 /* 919 * Have now read the entire graph and need to make a list of 920 * targets to create. If none was given on the command line, 921 * we consult the parsing module to find the main target(s) 922 * to create. 923 */ 924 if (Lst_IsEmpty(create)) 925 targs = Parse_MainName(); 926 else 927 targs = Targ_FindList(create); 928 929 if (!compatMake) { 930 /* 931 * Initialize job module before traversing the graph 932 * now that any .BEGIN and .END targets have been read. 933 * This is done only if the -q flag wasn't given 934 * (to prevent the .BEGIN from being executed should 935 * it exist). 936 */ 937 if (!queryFlag) { 938 Job_Init(); 939 jobsRunning = TRUE; 940 } 941 942 /* Traverse the graph, checking on all the targets */ 943 outOfDate = Make_Run(targs); 944 } else { 945 /* 946 * Compat_Init will take care of creating all the 947 * targets as well as initializing the module. 948 */ 949 Compat_Run(targs); 950 outOfDate = FALSE; 951 } 952 Lst_Free(targs); 953 return outOfDate; 954 } 955 956 /* 957 * Set up the .TARGETS variable to contain the list of targets to be 958 * created. If none specified, make the variable empty -- the parser 959 * will fill the thing in with the default or .MAIN target. 960 */ 961 static void 962 InitVarTargets(void) 963 { 964 StringListNode *ln; 965 966 if (Lst_IsEmpty(create)) { 967 Var_Set(".TARGETS", "", VAR_GLOBAL); 968 return; 969 } 970 971 for (ln = create->first; ln != NULL; ln = ln->next) { 972 char *name = ln->datum; 973 Var_Append(".TARGETS", name, VAR_GLOBAL); 974 } 975 } 976 977 static const char * 978 init_machine(const struct utsname *utsname) 979 { 980 const char *machine = getenv("MACHINE"); 981 if (machine != NULL) 982 return machine; 983 984 #ifdef MAKE_NATIVE 985 return utsname->machine; 986 #else 987 #ifdef MAKE_MACHINE 988 return MAKE_MACHINE; 989 #else 990 return "unknown"; 991 #endif 992 #endif 993 } 994 995 static const char * 996 init_machine_arch(void) 997 { 998 const char *env = getenv("MACHINE_ARCH"); 999 if (env != NULL) 1000 return env; 1001 1002 #ifdef MAKE_NATIVE 1003 { 1004 struct utsname utsname; 1005 static char machine_arch_buf[sizeof(utsname.machine)]; 1006 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1007 size_t len = sizeof(machine_arch_buf); 1008 1009 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1010 &len, NULL, 0) < 0) { 1011 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1012 strerror(errno)); 1013 exit(2); 1014 } 1015 1016 return machine_arch_buf; 1017 } 1018 #else 1019 #ifndef MACHINE_ARCH 1020 #ifdef MAKE_MACHINE_ARCH 1021 return MAKE_MACHINE_ARCH; 1022 #else 1023 return "unknown"; 1024 #endif 1025 #else 1026 return MACHINE_ARCH; 1027 #endif 1028 #endif 1029 } 1030 1031 #ifndef NO_PWD_OVERRIDE 1032 /* 1033 * All this code is so that we know where we are when we start up 1034 * on a different machine with pmake. 1035 * 1036 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1037 * since the value of curdir can vary depending on how we got 1038 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1039 * or via subdir.mk in which case its likely a shell which does 1040 * not provide it. 1041 * 1042 * So, to stop it breaking this case only, we ignore PWD if 1043 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1044 */ 1045 static void 1046 HandlePWD(const struct stat *curdir_st) 1047 { 1048 char *pwd; 1049 char *prefix_freeIt, *makeobjdir_freeIt; 1050 const char *makeobjdir; 1051 struct stat pwd_st; 1052 1053 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1054 return; 1055 1056 if (Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &prefix_freeIt) != NULL) { 1057 bmake_free(prefix_freeIt); 1058 return; 1059 } 1060 1061 makeobjdir = Var_Value("MAKEOBJDIR", VAR_CMD, &makeobjdir_freeIt); 1062 if (makeobjdir != NULL && strchr(makeobjdir, '$') != NULL) 1063 goto ignore_pwd; 1064 1065 if (stat(pwd, &pwd_st) == 0 && 1066 curdir_st->st_ino == pwd_st.st_ino && 1067 curdir_st->st_dev == pwd_st.st_dev) 1068 (void)strncpy(curdir, pwd, MAXPATHLEN); 1069 1070 ignore_pwd: 1071 bmake_free(makeobjdir_freeIt); 1072 } 1073 #endif 1074 1075 /*- 1076 * main -- 1077 * The main function, for obvious reasons. Initializes variables 1078 * and a few modules, then parses the arguments give it in the 1079 * environment and on the command line. Reads the system makefile 1080 * followed by either Makefile, makefile or the file given by the 1081 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 1082 * flags it has received by then uses either the Make or the Compat 1083 * module to create the initial list of targets. 1084 * 1085 * Results: 1086 * If -q was given, exits -1 if anything was out-of-date. Else it exits 1087 * 0. 1088 * 1089 * Side Effects: 1090 * The program exits when done. Targets are created. etc. etc. etc. 1091 */ 1092 int 1093 main(int argc, char **argv) 1094 { 1095 Boolean outOfDate; /* FALSE if all targets up to date */ 1096 struct stat sa; 1097 char *p1, *path; 1098 char mdpath[MAXPATHLEN]; 1099 const char *machine; 1100 const char *machine_arch; 1101 char *syspath = getenv("MAKESYSPATH"); 1102 StringList *sysMkPath; /* Path of sys.mk */ 1103 char *cp = NULL, *start; 1104 /* avoid faults on read-only strings */ 1105 static char defsyspath[] = _PATH_DEFSYSPATH; 1106 struct timeval rightnow; /* to initialize random seed */ 1107 struct utsname utsname; 1108 1109 /* default to writing debug to stderr */ 1110 debug_file = stderr; 1111 1112 #ifdef SIGINFO 1113 (void)bmake_signal(SIGINFO, siginfo); 1114 #endif 1115 /* 1116 * Set the seed to produce a different random sequence 1117 * on each program execution. 1118 */ 1119 gettimeofday(&rightnow, NULL); 1120 srandom((unsigned int)(rightnow.tv_sec + rightnow.tv_usec)); 1121 1122 if ((progname = strrchr(argv[0], '/')) != NULL) 1123 progname++; 1124 else 1125 progname = argv[0]; 1126 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1127 /* 1128 * get rid of resource limit on file descriptors 1129 */ 1130 { 1131 struct rlimit rl; 1132 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1133 rl.rlim_cur != rl.rlim_max) { 1134 rl.rlim_cur = rl.rlim_max; 1135 (void)setrlimit(RLIMIT_NOFILE, &rl); 1136 } 1137 } 1138 #endif 1139 1140 if (uname(&utsname) == -1) { 1141 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1142 strerror(errno)); 1143 exit(2); 1144 } 1145 1146 /* 1147 * Get the name of this type of MACHINE from utsname 1148 * so we can share an executable for similar machines. 1149 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1150 * 1151 * Note that both MACHINE and MACHINE_ARCH are decided at 1152 * run-time. 1153 */ 1154 machine = init_machine(&utsname); 1155 machine_arch = init_machine_arch(); 1156 1157 myPid = getpid(); /* remember this for vFork() */ 1158 1159 /* 1160 * Just in case MAKEOBJDIR wants us to do something tricky. 1161 */ 1162 Var_Init(); /* Initialize the lists of variables for 1163 * parsing arguments */ 1164 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1165 Var_Set("MACHINE", machine, VAR_GLOBAL); 1166 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1167 #ifdef MAKE_VERSION 1168 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1169 #endif 1170 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1171 /* 1172 * This is the traditional preference for makefiles. 1173 */ 1174 #ifndef MAKEFILE_PREFERENCE_LIST 1175 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1176 #endif 1177 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1178 VAR_GLOBAL); 1179 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1180 1181 create = Lst_New(); 1182 makefiles = Lst_New(); 1183 printVars = 0; 1184 debugVflag = FALSE; 1185 variables = Lst_New(); 1186 beSilent = FALSE; /* Print commands as executed */ 1187 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1188 noExecute = FALSE; /* Execute all commands */ 1189 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1190 keepgoing = FALSE; /* Stop on error */ 1191 allPrecious = FALSE; /* Remove targets when interrupted */ 1192 deleteOnError = FALSE; /* Historical default behavior */ 1193 queryFlag = FALSE; /* This is not just a check-run */ 1194 noBuiltins = FALSE; /* Read the built-in rules */ 1195 touchFlag = FALSE; /* Actually update targets */ 1196 debug = 0; /* No debug verbosity, please. */ 1197 jobsRunning = FALSE; 1198 1199 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1200 maxJobTokens = maxJobs; 1201 compatMake = FALSE; /* No compat mode */ 1202 ignorePWD = FALSE; 1203 1204 /* 1205 * Initialize the parsing, directory and variable modules to prepare 1206 * for the reading of inclusion paths and variable settings on the 1207 * command line 1208 */ 1209 1210 /* 1211 * Initialize various variables. 1212 * MAKE also gets this name, for compatibility 1213 * .MAKEFLAGS gets set to the empty string just in case. 1214 * MFLAGS also gets initialized empty, for compatibility. 1215 */ 1216 Parse_Init(); 1217 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1218 /* 1219 * Leave alone if it is an absolute path, or if it does 1220 * not contain a '/' in which case we need to find it in 1221 * the path, like execvp(3) and the shells do. 1222 */ 1223 p1 = argv[0]; 1224 } else { 1225 struct stat sb; 1226 /* 1227 * A relative path, canonicalize it. 1228 */ 1229 p1 = cached_realpath(argv[0], mdpath); 1230 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1231 p1 = argv[0]; /* realpath failed */ 1232 } 1233 } 1234 Var_Set("MAKE", p1, VAR_GLOBAL); 1235 Var_Set(".MAKE", p1, VAR_GLOBAL); 1236 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1237 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1238 Var_Set("MFLAGS", "", VAR_GLOBAL); 1239 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1240 /* some makefiles need to know this */ 1241 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1242 1243 /* 1244 * Set some other useful macros 1245 */ 1246 { 1247 char tmp[64], *ep; 1248 1249 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1250 if (makelevel < 0) 1251 makelevel = 0; 1252 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1253 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1254 snprintf(tmp, sizeof(tmp), "%u", myPid); 1255 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1256 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1257 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1258 } 1259 if (makelevel > 0) { 1260 char pn[1024]; 1261 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1262 progname = bmake_strdup(pn); 1263 } 1264 1265 #ifdef USE_META 1266 meta_init(); 1267 #endif 1268 Dir_Init(); 1269 1270 /* 1271 * First snag any flags out of the MAKE environment variable. 1272 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1273 * in a different format). 1274 */ 1275 #ifdef POSIX 1276 p1 = explode(getenv("MAKEFLAGS")); 1277 Main_ParseArgLine(p1); 1278 free(p1); 1279 #else 1280 Main_ParseArgLine(getenv("MAKE")); 1281 #endif 1282 1283 /* 1284 * Find where we are (now). 1285 * We take care of PWD for the automounter below... 1286 */ 1287 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1288 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1289 progname, strerror(errno)); 1290 exit(2); 1291 } 1292 1293 MainParseArgs(argc, argv); 1294 1295 if (enterFlag) 1296 printf("%s: Entering directory `%s'\n", progname, curdir); 1297 1298 /* 1299 * Verify that cwd is sane. 1300 */ 1301 if (stat(curdir, &sa) == -1) { 1302 (void)fprintf(stderr, "%s: %s: %s.\n", 1303 progname, curdir, strerror(errno)); 1304 exit(2); 1305 } 1306 1307 #ifndef NO_PWD_OVERRIDE 1308 HandlePWD(&sa); 1309 #endif 1310 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1311 1312 /* 1313 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1314 * MAKEOBJDIR is set in the environment, try only that value 1315 * and fall back to .CURDIR if it does not exist. 1316 * 1317 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1318 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1319 * of these paths exist, just use .CURDIR. 1320 */ 1321 Dir_InitDir(curdir); 1322 (void)Main_SetObjdir("%s", curdir); 1323 1324 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1325 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1326 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1327 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1328 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1329 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1330 1331 /* 1332 * Initialize archive, target and suffix modules in preparation for 1333 * parsing the makefile(s) 1334 */ 1335 Arch_Init(); 1336 Targ_Init(); 1337 Suff_Init(); 1338 Trace_Init(tracefile); 1339 1340 DEFAULT = NULL; 1341 (void)time(&now); 1342 1343 Trace_Log(MAKESTART, NULL); 1344 1345 InitVarTargets(); 1346 1347 /* 1348 * If no user-supplied system path was given (through the -m option) 1349 * add the directories from the DEFSYSPATH (more than one may be given 1350 * as dir1:...:dirn) to the system include path. 1351 */ 1352 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1353 if (syspath == NULL || syspath[0] == '\0') 1354 syspath = defsyspath; 1355 else 1356 syspath = bmake_strdup(syspath); 1357 1358 for (start = syspath; *start != '\0'; start = cp) { 1359 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1360 continue; 1361 if (*cp == ':') { 1362 *cp++ = '\0'; 1363 } 1364 /* look for magic parent directory search string */ 1365 if (strncmp(".../", start, 4) != 0) { 1366 (void)Dir_AddDir(defIncPath, start); 1367 } else { 1368 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1369 if (dir != NULL) { 1370 (void)Dir_AddDir(defIncPath, dir); 1371 free(dir); 1372 } 1373 } 1374 } 1375 if (syspath != defsyspath) 1376 free(syspath); 1377 1378 /* 1379 * Read in the built-in rules first, followed by the specified 1380 * makefiles, or the default makefile and Makefile, in that order, 1381 * if no makefiles were given on the command line. 1382 */ 1383 if (!noBuiltins) { 1384 StringListNode *ln; 1385 1386 sysMkPath = Lst_New(); 1387 Dir_Expand(_PATH_DEFSYSMK, 1388 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1389 sysMkPath); 1390 if (Lst_IsEmpty(sysMkPath)) 1391 Fatal("%s: no system rules (%s).", progname, 1392 _PATH_DEFSYSMK); 1393 ln = Lst_Find(sysMkPath, ReadMakefileSucceeded, NULL); 1394 if (ln == NULL) 1395 Fatal("%s: cannot open %s.", progname, 1396 (char *)sysMkPath->first->datum); 1397 } 1398 1399 if (!Lst_IsEmpty(makefiles)) { 1400 StringListNode *ln; 1401 1402 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1403 if (ln != NULL) 1404 Fatal("%s: cannot open %s.", progname, 1405 (char *)ln->datum); 1406 } else { 1407 (void)Var_Subst("${" MAKEFILE_PREFERENCE "}", 1408 VAR_CMD, VARE_WANTRES, &p1); 1409 /* TODO: handle errors */ 1410 (void)str2Lst_Append(makefiles, p1, NULL); 1411 (void)Lst_Find(makefiles, ReadMakefileSucceeded, NULL); 1412 free(p1); 1413 } 1414 1415 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1416 if (!noBuiltins || !printVars) { 1417 (void)Var_Subst("${.MAKE.DEPENDFILE:T}", 1418 VAR_CMD, VARE_WANTRES, &makeDependfile); 1419 /* TODO: handle errors */ 1420 doing_depend = TRUE; 1421 (void)ReadMakefile(makeDependfile); 1422 doing_depend = FALSE; 1423 } 1424 1425 if (enterFlagObj) 1426 printf("%s: Entering directory `%s'\n", progname, objdir); 1427 1428 MakeMode(NULL); 1429 1430 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1431 bmake_free(p1); 1432 1433 if (!forceJobs && !compatMake && 1434 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1435 char *value; 1436 int n; 1437 1438 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1439 /* TODO: handle errors */ 1440 n = (int)strtol(value, NULL, 0); 1441 if (n < 1) { 1442 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1443 progname); 1444 exit(1); 1445 } 1446 if (n != maxJobs) { 1447 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1448 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1449 } 1450 maxJobs = n; 1451 maxJobTokens = maxJobs; 1452 forceJobs = TRUE; 1453 free(value); 1454 } 1455 1456 /* 1457 * Be compatible if user did not specify -j and did not explicitly 1458 * turned compatibility on 1459 */ 1460 if (!compatMake && !forceJobs) { 1461 compatMake = TRUE; 1462 } 1463 1464 if (!compatMake) 1465 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1466 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1467 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1468 1469 if (!printVars) 1470 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1471 1472 1473 /* 1474 * For compatibility, look at the directories in the VPATH variable 1475 * and add them to the search path, if the variable is defined. The 1476 * variable's value is in the same format as the PATH envariable, i.e. 1477 * <directory>:<directory>:<directory>... 1478 */ 1479 if (Var_Exists("VPATH", VAR_CMD)) { 1480 char *vpath, savec; 1481 /* 1482 * GCC stores string constants in read-only memory, but 1483 * Var_Subst will want to write this thing, so store it 1484 * in an array 1485 */ 1486 static char VPATH[] = "${VPATH}"; 1487 1488 (void)Var_Subst(VPATH, VAR_CMD, VARE_WANTRES, &vpath); 1489 /* TODO: handle errors */ 1490 path = vpath; 1491 do { 1492 /* skip to end of directory */ 1493 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1494 continue; 1495 /* Save terminator character so know when to stop */ 1496 savec = *cp; 1497 *cp = '\0'; 1498 /* Add directory to search path */ 1499 (void)Dir_AddDir(dirSearchPath, path); 1500 *cp = savec; 1501 path = cp + 1; 1502 } while (savec == ':'); 1503 free(vpath); 1504 } 1505 1506 /* 1507 * Now that all search paths have been read for suffixes et al, it's 1508 * time to add the default search path to their lists... 1509 */ 1510 Suff_DoPaths(); 1511 1512 /* 1513 * Propagate attributes through :: dependency lists. 1514 */ 1515 Targ_Propagate(); 1516 1517 /* print the initial graph, if the user requested it */ 1518 if (DEBUG(GRAPH1)) 1519 Targ_PrintGraph(1); 1520 1521 /* print the values of any variables requested by the user */ 1522 if (printVars) { 1523 doPrintVars(); 1524 outOfDate = FALSE; 1525 } else { 1526 outOfDate = runTargets(); 1527 } 1528 1529 #ifdef CLEANUP 1530 Lst_Free(variables); 1531 Lst_Free(makefiles); 1532 Lst_Destroy(create, free); 1533 #endif 1534 1535 /* print the graph now it's been processed if the user requested it */ 1536 if (DEBUG(GRAPH2)) 1537 Targ_PrintGraph(2); 1538 1539 Trace_Log(MAKEEND, 0); 1540 1541 if (enterFlagObj) 1542 printf("%s: Leaving directory `%s'\n", progname, objdir); 1543 if (enterFlag) 1544 printf("%s: Leaving directory `%s'\n", progname, curdir); 1545 1546 #ifdef USE_META 1547 meta_finish(); 1548 #endif 1549 Suff_End(); 1550 Targ_End(); 1551 Arch_End(); 1552 Var_End(); 1553 Parse_End(); 1554 Dir_End(); 1555 Job_End(); 1556 Trace_End(); 1557 1558 return outOfDate ? 1 : 0; 1559 } 1560 1561 /* Open and parse the given makefile, with all its side effects. 1562 * 1563 * Results: 1564 * 0 if ok. -1 if couldn't open file. 1565 */ 1566 static int 1567 ReadMakefile(const char *fname) 1568 { 1569 int fd; 1570 char *name, *path = NULL; 1571 1572 if (!strcmp(fname, "-")) { 1573 Parse_File(NULL /*stdin*/, -1); 1574 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1575 } else { 1576 /* if we've chdir'd, rebuild the path name */ 1577 if (strcmp(curdir, objdir) && *fname != '/') { 1578 path = str_concat3(curdir, "/", fname); 1579 fd = open(path, O_RDONLY); 1580 if (fd != -1) { 1581 fname = path; 1582 goto found; 1583 } 1584 free(path); 1585 1586 /* If curdir failed, try objdir (ala .depend) */ 1587 path = str_concat3(objdir, "/", fname); 1588 fd = open(path, O_RDONLY); 1589 if (fd != -1) { 1590 fname = path; 1591 goto found; 1592 } 1593 } else { 1594 fd = open(fname, O_RDONLY); 1595 if (fd != -1) 1596 goto found; 1597 } 1598 /* look in -I and system include directories. */ 1599 name = Dir_FindFile(fname, parseIncPath); 1600 if (!name) 1601 name = Dir_FindFile(fname, 1602 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1603 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1604 free(name); 1605 free(path); 1606 return -1; 1607 } 1608 fname = name; 1609 /* 1610 * set the MAKEFILE variable desired by System V fans -- the 1611 * placement of the setting here means it gets set to the last 1612 * makefile specified, as it is set by SysV make. 1613 */ 1614 found: 1615 if (!doing_depend) 1616 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1617 Parse_File(fname, fd); 1618 } 1619 free(path); 1620 return 0; 1621 } 1622 1623 1624 1625 /*- 1626 * Cmd_Exec -- 1627 * Execute the command in cmd, and return the output of that command 1628 * in a string. In the output, newlines are replaced with spaces. 1629 * 1630 * Results: 1631 * A string containing the output of the command, or the empty string. 1632 * *errfmt returns a format string describing the command failure, 1633 * if any, using a single %s conversion specification. 1634 * 1635 * Side Effects: 1636 * The string must be freed by the caller. 1637 */ 1638 char * 1639 Cmd_Exec(const char *cmd, const char **errfmt) 1640 { 1641 const char *args[4]; /* Args for invoking the shell */ 1642 int fds[2]; /* Pipe streams */ 1643 int cpid; /* Child PID */ 1644 int pid; /* PID from wait() */ 1645 int status; /* command exit status */ 1646 Buffer buf; /* buffer to store the result */ 1647 ssize_t bytes_read; 1648 char *res; /* result */ 1649 size_t res_len; 1650 char *cp; 1651 int savederr; /* saved errno */ 1652 1653 *errfmt = NULL; 1654 1655 if (!shellName) 1656 Shell_Init(); 1657 /* 1658 * Set up arguments for shell 1659 */ 1660 args[0] = shellName; 1661 args[1] = "-c"; 1662 args[2] = cmd; 1663 args[3] = NULL; 1664 1665 /* 1666 * Open a pipe for fetching its output 1667 */ 1668 if (pipe(fds) == -1) { 1669 *errfmt = "Couldn't create pipe for \"%s\""; 1670 goto bad; 1671 } 1672 1673 /* 1674 * Fork 1675 */ 1676 switch (cpid = vFork()) { 1677 case 0: 1678 /* 1679 * Close input side of pipe 1680 */ 1681 (void)close(fds[0]); 1682 1683 /* 1684 * Duplicate the output stream to the shell's output, then 1685 * shut the extra thing down. Note we don't fetch the error 1686 * stream...why not? Why? 1687 */ 1688 (void)dup2(fds[1], 1); 1689 (void)close(fds[1]); 1690 1691 Var_ExportVars(); 1692 1693 (void)execv(shellPath, UNCONST(args)); 1694 _exit(1); 1695 /*NOTREACHED*/ 1696 1697 case -1: 1698 *errfmt = "Couldn't exec \"%s\""; 1699 goto bad; 1700 1701 default: 1702 /* 1703 * No need for the writing half 1704 */ 1705 (void)close(fds[1]); 1706 1707 savederr = 0; 1708 Buf_Init(&buf, 0); 1709 1710 do { 1711 char result[BUFSIZ]; 1712 bytes_read = read(fds[0], result, sizeof(result)); 1713 if (bytes_read > 0) 1714 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1715 } 1716 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1717 if (bytes_read == -1) 1718 savederr = errno; 1719 1720 /* 1721 * Close the input side of the pipe. 1722 */ 1723 (void)close(fds[0]); 1724 1725 /* 1726 * Wait for the process to exit. 1727 */ 1728 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1729 JobReapChild(pid, status, FALSE); 1730 continue; 1731 } 1732 res_len = Buf_Len(&buf); 1733 res = Buf_Destroy(&buf, FALSE); 1734 1735 if (savederr != 0) 1736 *errfmt = "Couldn't read shell's output for \"%s\""; 1737 1738 if (WIFSIGNALED(status)) 1739 *errfmt = "\"%s\" exited on a signal"; 1740 else if (WEXITSTATUS(status) != 0) 1741 *errfmt = "\"%s\" returned non-zero status"; 1742 1743 /* Convert newlines to spaces. A final newline is just stripped */ 1744 if (res_len > 0 && res[res_len - 1] == '\n') 1745 res[res_len - 1] = '\0'; 1746 for (cp = res; *cp != '\0'; cp++) 1747 if (*cp == '\n') 1748 *cp = ' '; 1749 break; 1750 } 1751 return res; 1752 bad: 1753 return bmake_strdup(""); 1754 } 1755 1756 /* Print a printf-style error message. 1757 * 1758 * This error message has no consequences, in particular it does not affect 1759 * the exit status. */ 1760 void 1761 Error(const char *fmt, ...) 1762 { 1763 va_list ap; 1764 FILE *err_file; 1765 1766 err_file = debug_file; 1767 if (err_file == stdout) 1768 err_file = stderr; 1769 (void)fflush(stdout); 1770 for (;;) { 1771 va_start(ap, fmt); 1772 fprintf(err_file, "%s: ", progname); 1773 (void)vfprintf(err_file, fmt, ap); 1774 va_end(ap); 1775 (void)fprintf(err_file, "\n"); 1776 (void)fflush(err_file); 1777 if (err_file == stderr) 1778 break; 1779 err_file = stderr; 1780 } 1781 } 1782 1783 /* Produce a Fatal error message, then exit immediately. 1784 * 1785 * If jobs are running, waits for them to finish. */ 1786 void 1787 Fatal(const char *fmt, ...) 1788 { 1789 va_list ap; 1790 1791 va_start(ap, fmt); 1792 if (jobsRunning) 1793 Job_Wait(); 1794 1795 (void)fflush(stdout); 1796 (void)vfprintf(stderr, fmt, ap); 1797 va_end(ap); 1798 (void)fprintf(stderr, "\n"); 1799 (void)fflush(stderr); 1800 1801 PrintOnError(NULL, NULL); 1802 1803 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1804 Targ_PrintGraph(2); 1805 Trace_Log(MAKEERROR, 0); 1806 exit(2); /* Not 1 so -q can distinguish error */ 1807 } 1808 1809 /* 1810 * Punt -- 1811 * Major exception once jobs are being created. Kills all jobs, prints 1812 * a message and exits. 1813 * 1814 * Results: 1815 * None 1816 * 1817 * Side Effects: 1818 * All children are killed indiscriminately and the program Lib_Exits 1819 */ 1820 void 1821 Punt(const char *fmt, ...) 1822 { 1823 va_list ap; 1824 1825 va_start(ap, fmt); 1826 (void)fflush(stdout); 1827 (void)fprintf(stderr, "%s: ", progname); 1828 (void)vfprintf(stderr, fmt, ap); 1829 va_end(ap); 1830 (void)fprintf(stderr, "\n"); 1831 (void)fflush(stderr); 1832 1833 PrintOnError(NULL, NULL); 1834 1835 DieHorribly(); 1836 } 1837 1838 /*- 1839 * DieHorribly -- 1840 * Exit without giving a message. 1841 * 1842 * Results: 1843 * None 1844 * 1845 * Side Effects: 1846 * A big one... 1847 */ 1848 void 1849 DieHorribly(void) 1850 { 1851 if (jobsRunning) 1852 Job_AbortAll(); 1853 if (DEBUG(GRAPH2)) 1854 Targ_PrintGraph(2); 1855 Trace_Log(MAKEERROR, 0); 1856 exit(2); /* Not 1, so -q can distinguish error */ 1857 } 1858 1859 /* 1860 * Finish -- 1861 * Called when aborting due to errors in child shell to signal 1862 * abnormal exit. 1863 * 1864 * Results: 1865 * None 1866 * 1867 * Side Effects: 1868 * The program exits 1869 */ 1870 void 1871 Finish(int errors) 1872 /* number of errors encountered in Make_Make */ 1873 { 1874 if (dieQuietly(NULL, -1)) 1875 exit(2); 1876 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1877 } 1878 1879 /* 1880 * eunlink -- 1881 * Remove a file carefully, avoiding directories. 1882 */ 1883 int 1884 eunlink(const char *file) 1885 { 1886 struct stat st; 1887 1888 if (lstat(file, &st) == -1) 1889 return -1; 1890 1891 if (S_ISDIR(st.st_mode)) { 1892 errno = EISDIR; 1893 return -1; 1894 } 1895 return unlink(file); 1896 } 1897 1898 static void 1899 write_all(int fd, const void *data, size_t n) 1900 { 1901 const char *mem = data; 1902 1903 while (n > 0) { 1904 ssize_t written = write(fd, mem, n); 1905 if (written == -1 && errno == EAGAIN) 1906 continue; 1907 if (written == -1) 1908 break; 1909 mem += written; 1910 n -= (size_t)written; 1911 } 1912 } 1913 1914 /* 1915 * execDie -- 1916 * Print why exec failed, avoiding stdio. 1917 */ 1918 void MAKE_ATTR_DEAD 1919 execDie(const char *af, const char *av) 1920 { 1921 Buffer buf; 1922 1923 Buf_Init(&buf, 0); 1924 Buf_AddStr(&buf, progname); 1925 Buf_AddStr(&buf, ": "); 1926 Buf_AddStr(&buf, af); 1927 Buf_AddStr(&buf, "("); 1928 Buf_AddStr(&buf, av); 1929 Buf_AddStr(&buf, ") failed ("); 1930 Buf_AddStr(&buf, strerror(errno)); 1931 Buf_AddStr(&buf, ")\n"); 1932 1933 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 1934 1935 Buf_Destroy(&buf, TRUE); 1936 _exit(1); 1937 } 1938 1939 /* 1940 * usage -- 1941 * exit with usage message 1942 */ 1943 static void 1944 usage(void) 1945 { 1946 char *p; 1947 if ((p = strchr(progname, '[')) != NULL) 1948 *p = '\0'; 1949 1950 (void)fprintf(stderr, 1951 "usage: %s [-BeikNnqrstWwX] \n" 1952 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1953 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1954 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1955 progname); 1956 exit(2); 1957 } 1958 1959 /* 1960 * realpath(3) can get expensive, cache results... 1961 */ 1962 static GNode *cached_realpaths = NULL; 1963 1964 static GNode * 1965 get_cached_realpaths(void) 1966 { 1967 1968 if (!cached_realpaths) { 1969 cached_realpaths = Targ_NewGN("Realpath"); 1970 #ifndef DEBUG_REALPATH_CACHE 1971 cached_realpaths->flags = INTERNAL; 1972 #endif 1973 } 1974 1975 return cached_realpaths; 1976 } 1977 1978 /* purge any relative paths */ 1979 static void 1980 purge_cached_realpaths(void) 1981 { 1982 GNode *cache = get_cached_realpaths(); 1983 HashEntry *he, *nhe; 1984 HashIter hi; 1985 1986 HashIter_Init(&hi, &cache->context); 1987 he = HashIter_Next(&hi); 1988 while (he != NULL) { 1989 nhe = HashIter_Next(&hi); 1990 if (he->key[0] != '/') { 1991 if (DEBUG(DIR)) 1992 fprintf(stderr, "cached_realpath: purging %s\n", he->key); 1993 Hash_DeleteEntry(&cache->context, he); 1994 } 1995 he = nhe; 1996 } 1997 } 1998 1999 char * 2000 cached_realpath(const char *pathname, char *resolved) 2001 { 2002 GNode *cache; 2003 const char *rp; 2004 char *cp; 2005 2006 if (!pathname || !pathname[0]) 2007 return NULL; 2008 2009 cache = get_cached_realpaths(); 2010 2011 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 2012 /* a hit */ 2013 strncpy(resolved, rp, MAXPATHLEN); 2014 resolved[MAXPATHLEN - 1] = '\0'; 2015 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2016 Var_Set(pathname, rp, cache); 2017 } /* else should we negative-cache? */ 2018 2019 bmake_free(cp); 2020 return rp ? resolved : NULL; 2021 } 2022 2023 2024 static int 2025 addErrorCMD(void *cmdp, void *gnp) 2026 { 2027 if (cmdp == NULL) 2028 return 1; /* stop */ 2029 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2030 return 0; 2031 } 2032 2033 /* 2034 * Return true if we should die without noise. 2035 * For example our failing child was a sub-make 2036 * or failure happend elsewhere. 2037 */ 2038 int 2039 dieQuietly(GNode *gn, int bf) 2040 { 2041 static int quietly = -1; 2042 2043 if (quietly < 0) { 2044 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2045 quietly = 0; 2046 else if (bf >= 0) 2047 quietly = bf; 2048 else 2049 quietly = gn != NULL ? ((gn->type & (OP_MAKE)) != 0) : 0; 2050 } 2051 return quietly; 2052 } 2053 2054 void 2055 PrintOnError(GNode *gn, const char *s) 2056 { 2057 static GNode *en = NULL; 2058 const char *expr; 2059 char *cp; 2060 2061 if (DEBUG(HASH)) { 2062 Targ_Stats(); 2063 Var_Stats(); 2064 } 2065 2066 /* we generally want to keep quiet if a sub-make died */ 2067 if (dieQuietly(gn, -1)) 2068 return; 2069 2070 if (s) 2071 printf("%s", s); 2072 2073 printf("\n%s: stopped in %s\n", progname, curdir); 2074 2075 if (en) 2076 return; /* we've been here! */ 2077 if (gn) { 2078 /* 2079 * We can print this even if there is no .ERROR target. 2080 */ 2081 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2082 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2083 Lst_ForEachUntil(gn->commands, addErrorCMD, gn); 2084 } 2085 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2086 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2087 /* TODO: handle errors */ 2088 printf("%s", cp); 2089 free(cp); 2090 fflush(stdout); 2091 2092 /* 2093 * Finally, see if there is a .ERROR target, and run it if so. 2094 */ 2095 en = Targ_FindNode(".ERROR"); 2096 if (en) { 2097 en->type |= OP_SPECIAL; 2098 Compat_Make(en, en); 2099 } 2100 } 2101 2102 void 2103 Main_ExportMAKEFLAGS(Boolean first) 2104 { 2105 static Boolean once = TRUE; 2106 const char *expr; 2107 char *s; 2108 2109 if (once != first) 2110 return; 2111 once = FALSE; 2112 2113 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2114 (void)Var_Subst(expr, VAR_CMD, VARE_WANTRES, &s); 2115 /* TODO: handle errors */ 2116 if (s[0] != '\0') { 2117 #ifdef POSIX 2118 setenv("MAKEFLAGS", s, 1); 2119 #else 2120 setenv("MAKE", s, 1); 2121 #endif 2122 } 2123 } 2124 2125 char * 2126 getTmpdir(void) 2127 { 2128 static char *tmpdir = NULL; 2129 2130 if (!tmpdir) { 2131 struct stat st; 2132 2133 /* 2134 * Honor $TMPDIR but only if it is valid. 2135 * Ensure it ends with /. 2136 */ 2137 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2138 VARE_WANTRES, &tmpdir); 2139 /* TODO: handle errors */ 2140 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2141 free(tmpdir); 2142 tmpdir = bmake_strdup(_PATH_TMP); 2143 } 2144 } 2145 return tmpdir; 2146 } 2147 2148 /* 2149 * Create and open a temp file using "pattern". 2150 * If "fnamep" is provided set it to a copy of the filename created. 2151 * Otherwise unlink the file once open. 2152 */ 2153 int 2154 mkTempFile(const char *pattern, char **fnamep) 2155 { 2156 static char *tmpdir = NULL; 2157 char tfile[MAXPATHLEN]; 2158 int fd; 2159 2160 if (!pattern) 2161 pattern = TMPPAT; 2162 if (!tmpdir) 2163 tmpdir = getTmpdir(); 2164 if (pattern[0] == '/') { 2165 snprintf(tfile, sizeof(tfile), "%s", pattern); 2166 } else { 2167 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2168 } 2169 if ((fd = mkstemp(tfile)) < 0) 2170 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2171 if (fnamep) { 2172 *fnamep = bmake_strdup(tfile); 2173 } else { 2174 unlink(tfile); /* we just want the descriptor */ 2175 } 2176 return fd; 2177 } 2178 2179 /* 2180 * Convert a string representation of a boolean. 2181 * Anything that looks like "No", "False", "Off", "0" etc, 2182 * is FALSE, otherwise TRUE. 2183 */ 2184 Boolean 2185 s2Boolean(const char *s, Boolean bf) 2186 { 2187 if (s) { 2188 switch(*s) { 2189 case '\0': /* not set - the default wins */ 2190 break; 2191 case '0': 2192 case 'F': 2193 case 'f': 2194 case 'N': 2195 case 'n': 2196 bf = FALSE; 2197 break; 2198 case 'O': 2199 case 'o': 2200 switch (s[1]) { 2201 case 'F': 2202 case 'f': 2203 bf = FALSE; 2204 break; 2205 default: 2206 bf = TRUE; 2207 break; 2208 } 2209 break; 2210 default: 2211 bf = TRUE; 2212 break; 2213 } 2214 } 2215 return bf; 2216 } 2217 2218 /* 2219 * Return a Boolean based on setting of a knob. 2220 * 2221 * If the knob is not set, the supplied default is the return value. 2222 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2223 * is FALSE, otherwise TRUE. 2224 */ 2225 Boolean 2226 getBoolean(const char *name, Boolean fallback) 2227 { 2228 char *expr = str_concat3("${", name, ":U:tl}"); 2229 char *value; 2230 Boolean res; 2231 2232 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 2233 /* TODO: handle errors */ 2234 res = s2Boolean(value, fallback); 2235 free(value); 2236 free(expr); 2237 return res; 2238 } 2239
Indexes created Mon Sep 22 13:09:51 GMT 2025