main.c revision 1.385
1 /* $NetBSD: main.c,v 1.385 2020/10/23 06:27:39 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 1.385 2020/10/23 06:27:39 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("${" MAKE_MODE ":tl}", 851 VAR_GLOBAL, VARE_WANTRES, &mode_freeIt); 852 /* TODO: handle errors */ 853 mode = mode_freeIt; 854 } 855 856 if (mode[0] != '\0') { 857 if (strstr(mode, "compat")) { 858 compatMake = TRUE; 859 forceJobs = FALSE; 860 } 861 #if USE_META 862 if (strstr(mode, "meta")) 863 meta_mode_init(mode); 864 #endif 865 } 866 867 free(mode_freeIt); 868 } 869 870 static void 871 PrintVar(const char *varname, Boolean expandVars) 872 { 873 if (strchr(varname, '$')) { 874 char *evalue; 875 (void)Var_Subst(varname, VAR_GLOBAL, VARE_WANTRES, &evalue); 876 /* TODO: handle errors */ 877 printf("%s\n", evalue); 878 bmake_free(evalue); 879 880 } else if (expandVars) { 881 char *expr = str_concat3("${", varname, "}"); 882 char *evalue; 883 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &evalue); 884 /* TODO: handle errors */ 885 free(expr); 886 printf("%s\n", evalue); 887 bmake_free(evalue); 888 889 } else { 890 char *freeIt; 891 const char *value = Var_Value(varname, VAR_GLOBAL, &freeIt); 892 printf("%s\n", value ? value : ""); 893 bmake_free(freeIt); 894 } 895 } 896 897 static void 898 doPrintVars(void) 899 { 900 StringListNode *ln; 901 Boolean expandVars; 902 903 if (printVars == EXPAND_VARS) 904 expandVars = TRUE; 905 else if (debugVflag) 906 expandVars = FALSE; 907 else 908 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 909 910 for (ln = variables->first; ln != NULL; ln = ln->next) { 911 const char *varname = ln->datum; 912 PrintVar(varname, expandVars); 913 } 914 } 915 916 static Boolean 917 runTargets(void) 918 { 919 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 920 Boolean outOfDate; /* FALSE if all targets up to date */ 921 922 /* 923 * Have now read the entire graph and need to make a list of 924 * targets to create. If none was given on the command line, 925 * we consult the parsing module to find the main target(s) 926 * to create. 927 */ 928 if (Lst_IsEmpty(create)) 929 targs = Parse_MainName(); 930 else 931 targs = Targ_FindList(create); 932 933 if (!compatMake) { 934 /* 935 * Initialize job module before traversing the graph 936 * now that any .BEGIN and .END targets have been read. 937 * This is done only if the -q flag wasn't given 938 * (to prevent the .BEGIN from being executed should 939 * it exist). 940 */ 941 if (!queryFlag) { 942 Job_Init(); 943 jobsRunning = TRUE; 944 } 945 946 /* Traverse the graph, checking on all the targets */ 947 outOfDate = Make_Run(targs); 948 } else { 949 /* 950 * Compat_Init will take care of creating all the 951 * targets as well as initializing the module. 952 */ 953 Compat_Run(targs); 954 outOfDate = FALSE; 955 } 956 Lst_Free(targs); 957 return outOfDate; 958 } 959 960 /* 961 * Set up the .TARGETS variable to contain the list of targets to be 962 * created. If none specified, make the variable empty -- the parser 963 * will fill the thing in with the default or .MAIN target. 964 */ 965 static void 966 InitVarTargets(void) 967 { 968 StringListNode *ln; 969 970 if (Lst_IsEmpty(create)) { 971 Var_Set(".TARGETS", "", VAR_GLOBAL); 972 return; 973 } 974 975 for (ln = create->first; ln != NULL; ln = ln->next) { 976 char *name = ln->datum; 977 Var_Append(".TARGETS", name, VAR_GLOBAL); 978 } 979 } 980 981 static const char * 982 init_machine(const struct utsname *utsname) 983 { 984 const char *machine = getenv("MACHINE"); 985 if (machine != NULL) 986 return machine; 987 988 #ifdef MAKE_NATIVE 989 return utsname->machine; 990 #else 991 #ifdef MAKE_MACHINE 992 return MAKE_MACHINE; 993 #else 994 return "unknown"; 995 #endif 996 #endif 997 } 998 999 static const char * 1000 init_machine_arch(void) 1001 { 1002 const char *env = getenv("MACHINE_ARCH"); 1003 if (env != NULL) 1004 return env; 1005 1006 #ifdef MAKE_NATIVE 1007 { 1008 struct utsname utsname; 1009 static char machine_arch_buf[sizeof(utsname.machine)]; 1010 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1011 size_t len = sizeof(machine_arch_buf); 1012 1013 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1014 &len, NULL, 0) < 0) { 1015 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1016 strerror(errno)); 1017 exit(2); 1018 } 1019 1020 return machine_arch_buf; 1021 } 1022 #else 1023 #ifndef MACHINE_ARCH 1024 #ifdef MAKE_MACHINE_ARCH 1025 return MAKE_MACHINE_ARCH; 1026 #else 1027 return "unknown"; 1028 #endif 1029 #else 1030 return MACHINE_ARCH; 1031 #endif 1032 #endif 1033 } 1034 1035 #ifndef NO_PWD_OVERRIDE 1036 /* 1037 * All this code is so that we know where we are when we start up 1038 * on a different machine with pmake. 1039 * 1040 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1041 * since the value of curdir can vary depending on how we got 1042 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1043 * or via subdir.mk in which case its likely a shell which does 1044 * not provide it. 1045 * 1046 * So, to stop it breaking this case only, we ignore PWD if 1047 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1048 */ 1049 static void 1050 HandlePWD(const struct stat *curdir_st) 1051 { 1052 char *pwd; 1053 char *prefix_freeIt, *makeobjdir_freeIt; 1054 const char *makeobjdir; 1055 struct stat pwd_st; 1056 1057 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1058 return; 1059 1060 if (Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &prefix_freeIt) != NULL) { 1061 bmake_free(prefix_freeIt); 1062 return; 1063 } 1064 1065 makeobjdir = Var_Value("MAKEOBJDIR", VAR_CMD, &makeobjdir_freeIt); 1066 if (makeobjdir != NULL && strchr(makeobjdir, '$') != NULL) 1067 goto ignore_pwd; 1068 1069 if (stat(pwd, &pwd_st) == 0 && 1070 curdir_st->st_ino == pwd_st.st_ino && 1071 curdir_st->st_dev == pwd_st.st_dev) 1072 (void)strncpy(curdir, pwd, MAXPATHLEN); 1073 1074 ignore_pwd: 1075 bmake_free(makeobjdir_freeIt); 1076 } 1077 #endif 1078 1079 /*- 1080 * main -- 1081 * The main function, for obvious reasons. Initializes variables 1082 * and a few modules, then parses the arguments give it in the 1083 * environment and on the command line. Reads the system makefile 1084 * followed by either Makefile, makefile or the file given by the 1085 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 1086 * flags it has received by then uses either the Make or the Compat 1087 * module to create the initial list of targets. 1088 * 1089 * Results: 1090 * If -q was given, exits -1 if anything was out-of-date. Else it exits 1091 * 0. 1092 * 1093 * Side Effects: 1094 * The program exits when done. Targets are created. etc. etc. etc. 1095 */ 1096 int 1097 main(int argc, char **argv) 1098 { 1099 Boolean outOfDate; /* FALSE if all targets up to date */ 1100 struct stat sa; 1101 char *p1, *path; 1102 char mdpath[MAXPATHLEN]; 1103 const char *machine; 1104 const char *machine_arch; 1105 char *syspath = getenv("MAKESYSPATH"); 1106 StringList *sysMkPath; /* Path of sys.mk */ 1107 char *cp = NULL, *start; 1108 /* avoid faults on read-only strings */ 1109 static char defsyspath[] = _PATH_DEFSYSPATH; 1110 struct timeval rightnow; /* to initialize random seed */ 1111 struct utsname utsname; 1112 1113 /* default to writing debug to stderr */ 1114 debug_file = stderr; 1115 1116 #ifdef SIGINFO 1117 (void)bmake_signal(SIGINFO, siginfo); 1118 #endif 1119 /* 1120 * Set the seed to produce a different random sequence 1121 * on each program execution. 1122 */ 1123 gettimeofday(&rightnow, NULL); 1124 srandom((unsigned int)(rightnow.tv_sec + rightnow.tv_usec)); 1125 1126 if ((progname = strrchr(argv[0], '/')) != NULL) 1127 progname++; 1128 else 1129 progname = argv[0]; 1130 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1131 /* 1132 * get rid of resource limit on file descriptors 1133 */ 1134 { 1135 struct rlimit rl; 1136 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1137 rl.rlim_cur != rl.rlim_max) { 1138 rl.rlim_cur = rl.rlim_max; 1139 (void)setrlimit(RLIMIT_NOFILE, &rl); 1140 } 1141 } 1142 #endif 1143 1144 if (uname(&utsname) == -1) { 1145 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1146 strerror(errno)); 1147 exit(2); 1148 } 1149 1150 /* 1151 * Get the name of this type of MACHINE from utsname 1152 * so we can share an executable for similar machines. 1153 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1154 * 1155 * Note that both MACHINE and MACHINE_ARCH are decided at 1156 * run-time. 1157 */ 1158 machine = init_machine(&utsname); 1159 machine_arch = init_machine_arch(); 1160 1161 myPid = getpid(); /* remember this for vFork() */ 1162 1163 /* 1164 * Just in case MAKEOBJDIR wants us to do something tricky. 1165 */ 1166 Var_Init(); /* Initialize the lists of variables for 1167 * parsing arguments */ 1168 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1169 Var_Set("MACHINE", machine, VAR_GLOBAL); 1170 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1171 #ifdef MAKE_VERSION 1172 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1173 #endif 1174 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1175 /* 1176 * This is the traditional preference for makefiles. 1177 */ 1178 #ifndef MAKEFILE_PREFERENCE_LIST 1179 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1180 #endif 1181 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1182 VAR_GLOBAL); 1183 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1184 1185 create = Lst_New(); 1186 makefiles = Lst_New(); 1187 printVars = 0; 1188 debugVflag = FALSE; 1189 variables = Lst_New(); 1190 beSilent = FALSE; /* Print commands as executed */ 1191 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1192 noExecute = FALSE; /* Execute all commands */ 1193 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1194 keepgoing = FALSE; /* Stop on error */ 1195 allPrecious = FALSE; /* Remove targets when interrupted */ 1196 deleteOnError = FALSE; /* Historical default behavior */ 1197 queryFlag = FALSE; /* This is not just a check-run */ 1198 noBuiltins = FALSE; /* Read the built-in rules */ 1199 touchFlag = FALSE; /* Actually update targets */ 1200 debug = 0; /* No debug verbosity, please. */ 1201 jobsRunning = FALSE; 1202 1203 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1204 maxJobTokens = maxJobs; 1205 compatMake = FALSE; /* No compat mode */ 1206 ignorePWD = FALSE; 1207 1208 /* 1209 * Initialize the parsing, directory and variable modules to prepare 1210 * for the reading of inclusion paths and variable settings on the 1211 * command line 1212 */ 1213 1214 /* 1215 * Initialize various variables. 1216 * MAKE also gets this name, for compatibility 1217 * .MAKEFLAGS gets set to the empty string just in case. 1218 * MFLAGS also gets initialized empty, for compatibility. 1219 */ 1220 Parse_Init(); 1221 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1222 /* 1223 * Leave alone if it is an absolute path, or if it does 1224 * not contain a '/' in which case we need to find it in 1225 * the path, like execvp(3) and the shells do. 1226 */ 1227 p1 = argv[0]; 1228 } else { 1229 struct stat sb; 1230 /* 1231 * A relative path, canonicalize it. 1232 */ 1233 p1 = cached_realpath(argv[0], mdpath); 1234 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1235 p1 = argv[0]; /* realpath failed */ 1236 } 1237 } 1238 Var_Set("MAKE", p1, VAR_GLOBAL); 1239 Var_Set(".MAKE", p1, VAR_GLOBAL); 1240 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1241 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1242 Var_Set("MFLAGS", "", VAR_GLOBAL); 1243 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1244 /* some makefiles need to know this */ 1245 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1246 1247 /* 1248 * Set some other useful macros 1249 */ 1250 { 1251 char tmp[64], *ep; 1252 1253 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1254 if (makelevel < 0) 1255 makelevel = 0; 1256 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1257 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1258 snprintf(tmp, sizeof(tmp), "%u", myPid); 1259 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1260 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1261 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1262 } 1263 if (makelevel > 0) { 1264 char pn[1024]; 1265 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1266 progname = bmake_strdup(pn); 1267 } 1268 1269 #ifdef USE_META 1270 meta_init(); 1271 #endif 1272 Dir_Init(); 1273 1274 /* 1275 * First snag any flags out of the MAKE environment variable. 1276 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1277 * in a different format). 1278 */ 1279 #ifdef POSIX 1280 p1 = explode(getenv("MAKEFLAGS")); 1281 Main_ParseArgLine(p1); 1282 free(p1); 1283 #else 1284 Main_ParseArgLine(getenv("MAKE")); 1285 #endif 1286 1287 /* 1288 * Find where we are (now). 1289 * We take care of PWD for the automounter below... 1290 */ 1291 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1292 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1293 progname, strerror(errno)); 1294 exit(2); 1295 } 1296 1297 MainParseArgs(argc, argv); 1298 1299 if (enterFlag) 1300 printf("%s: Entering directory `%s'\n", progname, curdir); 1301 1302 /* 1303 * Verify that cwd is sane. 1304 */ 1305 if (stat(curdir, &sa) == -1) { 1306 (void)fprintf(stderr, "%s: %s: %s.\n", 1307 progname, curdir, strerror(errno)); 1308 exit(2); 1309 } 1310 1311 #ifndef NO_PWD_OVERRIDE 1312 HandlePWD(&sa); 1313 #endif 1314 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1315 1316 /* 1317 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1318 * MAKEOBJDIR is set in the environment, try only that value 1319 * and fall back to .CURDIR if it does not exist. 1320 * 1321 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1322 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1323 * of these paths exist, just use .CURDIR. 1324 */ 1325 Dir_InitDir(curdir); 1326 (void)Main_SetObjdir("%s", curdir); 1327 1328 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1329 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1330 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1331 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1332 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1333 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1334 1335 /* 1336 * Initialize archive, target and suffix modules in preparation for 1337 * parsing the makefile(s) 1338 */ 1339 Arch_Init(); 1340 Targ_Init(); 1341 Suff_Init(); 1342 Trace_Init(tracefile); 1343 1344 DEFAULT = NULL; 1345 (void)time(&now); 1346 1347 Trace_Log(MAKESTART, NULL); 1348 1349 InitVarTargets(); 1350 1351 /* 1352 * If no user-supplied system path was given (through the -m option) 1353 * add the directories from the DEFSYSPATH (more than one may be given 1354 * as dir1:...:dirn) to the system include path. 1355 */ 1356 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1357 if (syspath == NULL || syspath[0] == '\0') 1358 syspath = defsyspath; 1359 else 1360 syspath = bmake_strdup(syspath); 1361 1362 for (start = syspath; *start != '\0'; start = cp) { 1363 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1364 continue; 1365 if (*cp == ':') { 1366 *cp++ = '\0'; 1367 } 1368 /* look for magic parent directory search string */ 1369 if (strncmp(".../", start, 4) != 0) { 1370 (void)Dir_AddDir(defIncPath, start); 1371 } else { 1372 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1373 if (dir != NULL) { 1374 (void)Dir_AddDir(defIncPath, dir); 1375 free(dir); 1376 } 1377 } 1378 } 1379 if (syspath != defsyspath) 1380 free(syspath); 1381 1382 /* 1383 * Read in the built-in rules first, followed by the specified 1384 * makefiles, or the default makefile and Makefile, in that order, 1385 * if no makefiles were given on the command line. 1386 */ 1387 if (!noBuiltins) { 1388 StringListNode *ln; 1389 1390 sysMkPath = Lst_New(); 1391 Dir_Expand(_PATH_DEFSYSMK, 1392 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1393 sysMkPath); 1394 if (Lst_IsEmpty(sysMkPath)) 1395 Fatal("%s: no system rules (%s).", progname, 1396 _PATH_DEFSYSMK); 1397 ln = Lst_Find(sysMkPath, ReadMakefileSucceeded, NULL); 1398 if (ln == NULL) 1399 Fatal("%s: cannot open %s.", progname, 1400 (char *)sysMkPath->first->datum); 1401 } 1402 1403 if (!Lst_IsEmpty(makefiles)) { 1404 StringListNode *ln; 1405 1406 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1407 if (ln != NULL) 1408 Fatal("%s: cannot open %s.", progname, 1409 (char *)ln->datum); 1410 } else { 1411 (void)Var_Subst("${" MAKEFILE_PREFERENCE "}", 1412 VAR_CMD, VARE_WANTRES, &p1); 1413 /* TODO: handle errors */ 1414 (void)str2Lst_Append(makefiles, p1, NULL); 1415 (void)Lst_Find(makefiles, ReadMakefileSucceeded, NULL); 1416 free(p1); 1417 } 1418 1419 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1420 if (!noBuiltins || !printVars) { 1421 (void)Var_Subst("${.MAKE.DEPENDFILE:T}", 1422 VAR_CMD, VARE_WANTRES, &makeDependfile); 1423 /* TODO: handle errors */ 1424 doing_depend = TRUE; 1425 (void)ReadMakefile(makeDependfile); 1426 doing_depend = FALSE; 1427 } 1428 1429 if (enterFlagObj) 1430 printf("%s: Entering directory `%s'\n", progname, objdir); 1431 1432 MakeMode(NULL); 1433 1434 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1435 bmake_free(p1); 1436 1437 if (!forceJobs && !compatMake && 1438 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1439 char *value; 1440 int n; 1441 1442 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1443 /* TODO: handle errors */ 1444 n = (int)strtol(value, NULL, 0); 1445 if (n < 1) { 1446 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1447 progname); 1448 exit(1); 1449 } 1450 if (n != maxJobs) { 1451 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1452 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1453 } 1454 maxJobs = n; 1455 maxJobTokens = maxJobs; 1456 forceJobs = TRUE; 1457 free(value); 1458 } 1459 1460 /* 1461 * Be compatible if user did not specify -j and did not explicitly 1462 * turned compatibility on 1463 */ 1464 if (!compatMake && !forceJobs) { 1465 compatMake = TRUE; 1466 } 1467 1468 if (!compatMake) 1469 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1470 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1471 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1472 1473 if (!printVars) 1474 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1475 1476 1477 /* 1478 * For compatibility, look at the directories in the VPATH variable 1479 * and add them to the search path, if the variable is defined. The 1480 * variable's value is in the same format as the PATH envariable, i.e. 1481 * <directory>:<directory>:<directory>... 1482 */ 1483 if (Var_Exists("VPATH", VAR_CMD)) { 1484 char *vpath, savec; 1485 /* 1486 * GCC stores string constants in read-only memory, but 1487 * Var_Subst will want to write this thing, so store it 1488 * in an array 1489 */ 1490 static char VPATH[] = "${VPATH}"; 1491 1492 (void)Var_Subst(VPATH, VAR_CMD, VARE_WANTRES, &vpath); 1493 /* TODO: handle errors */ 1494 path = vpath; 1495 do { 1496 /* skip to end of directory */ 1497 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1498 continue; 1499 /* Save terminator character so know when to stop */ 1500 savec = *cp; 1501 *cp = '\0'; 1502 /* Add directory to search path */ 1503 (void)Dir_AddDir(dirSearchPath, path); 1504 *cp = savec; 1505 path = cp + 1; 1506 } while (savec == ':'); 1507 free(vpath); 1508 } 1509 1510 /* 1511 * Now that all search paths have been read for suffixes et al, it's 1512 * time to add the default search path to their lists... 1513 */ 1514 Suff_DoPaths(); 1515 1516 /* 1517 * Propagate attributes through :: dependency lists. 1518 */ 1519 Targ_Propagate(); 1520 1521 /* print the initial graph, if the user requested it */ 1522 if (DEBUG(GRAPH1)) 1523 Targ_PrintGraph(1); 1524 1525 /* print the values of any variables requested by the user */ 1526 if (printVars) { 1527 doPrintVars(); 1528 outOfDate = FALSE; 1529 } else { 1530 outOfDate = runTargets(); 1531 } 1532 1533 #ifdef CLEANUP 1534 Lst_Free(variables); 1535 Lst_Free(makefiles); 1536 Lst_Destroy(create, free); 1537 #endif 1538 1539 /* print the graph now it's been processed if the user requested it */ 1540 if (DEBUG(GRAPH2)) 1541 Targ_PrintGraph(2); 1542 1543 Trace_Log(MAKEEND, 0); 1544 1545 if (enterFlagObj) 1546 printf("%s: Leaving directory `%s'\n", progname, objdir); 1547 if (enterFlag) 1548 printf("%s: Leaving directory `%s'\n", progname, curdir); 1549 1550 #ifdef USE_META 1551 meta_finish(); 1552 #endif 1553 Suff_End(); 1554 Targ_End(); 1555 Arch_End(); 1556 Var_End(); 1557 Parse_End(); 1558 Dir_End(); 1559 Job_End(); 1560 Trace_End(); 1561 1562 return outOfDate ? 1 : 0; 1563 } 1564 1565 /* Open and parse the given makefile, with all its side effects. 1566 * 1567 * Results: 1568 * 0 if ok. -1 if couldn't open file. 1569 */ 1570 static int 1571 ReadMakefile(const char *fname) 1572 { 1573 int fd; 1574 char *name, *path = NULL; 1575 1576 if (!strcmp(fname, "-")) { 1577 Parse_File(NULL /*stdin*/, -1); 1578 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1579 } else { 1580 /* if we've chdir'd, rebuild the path name */ 1581 if (strcmp(curdir, objdir) && *fname != '/') { 1582 path = str_concat3(curdir, "/", fname); 1583 fd = open(path, O_RDONLY); 1584 if (fd != -1) { 1585 fname = path; 1586 goto found; 1587 } 1588 free(path); 1589 1590 /* If curdir failed, try objdir (ala .depend) */ 1591 path = str_concat3(objdir, "/", fname); 1592 fd = open(path, O_RDONLY); 1593 if (fd != -1) { 1594 fname = path; 1595 goto found; 1596 } 1597 } else { 1598 fd = open(fname, O_RDONLY); 1599 if (fd != -1) 1600 goto found; 1601 } 1602 /* look in -I and system include directories. */ 1603 name = Dir_FindFile(fname, parseIncPath); 1604 if (!name) 1605 name = Dir_FindFile(fname, 1606 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1607 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1608 free(name); 1609 free(path); 1610 return -1; 1611 } 1612 fname = name; 1613 /* 1614 * set the MAKEFILE variable desired by System V fans -- the 1615 * placement of the setting here means it gets set to the last 1616 * makefile specified, as it is set by SysV make. 1617 */ 1618 found: 1619 if (!doing_depend) 1620 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1621 Parse_File(fname, fd); 1622 } 1623 free(path); 1624 return 0; 1625 } 1626 1627 1628 1629 /*- 1630 * Cmd_Exec -- 1631 * Execute the command in cmd, and return the output of that command 1632 * in a string. In the output, newlines are replaced with spaces. 1633 * 1634 * Results: 1635 * A string containing the output of the command, or the empty string. 1636 * *errfmt returns a format string describing the command failure, 1637 * if any, using a single %s conversion specification. 1638 * 1639 * Side Effects: 1640 * The string must be freed by the caller. 1641 */ 1642 char * 1643 Cmd_Exec(const char *cmd, const char **errfmt) 1644 { 1645 const char *args[4]; /* Args for invoking the shell */ 1646 int fds[2]; /* Pipe streams */ 1647 int cpid; /* Child PID */ 1648 int pid; /* PID from wait() */ 1649 int status; /* command exit status */ 1650 Buffer buf; /* buffer to store the result */ 1651 ssize_t bytes_read; 1652 char *res; /* result */ 1653 size_t res_len; 1654 char *cp; 1655 int savederr; /* saved errno */ 1656 1657 *errfmt = NULL; 1658 1659 if (!shellName) 1660 Shell_Init(); 1661 /* 1662 * Set up arguments for shell 1663 */ 1664 args[0] = shellName; 1665 args[1] = "-c"; 1666 args[2] = cmd; 1667 args[3] = NULL; 1668 1669 /* 1670 * Open a pipe for fetching its output 1671 */ 1672 if (pipe(fds) == -1) { 1673 *errfmt = "Couldn't create pipe for \"%s\""; 1674 goto bad; 1675 } 1676 1677 /* 1678 * Fork 1679 */ 1680 switch (cpid = vFork()) { 1681 case 0: 1682 /* 1683 * Close input side of pipe 1684 */ 1685 (void)close(fds[0]); 1686 1687 /* 1688 * Duplicate the output stream to the shell's output, then 1689 * shut the extra thing down. Note we don't fetch the error 1690 * stream...why not? Why? 1691 */ 1692 (void)dup2(fds[1], 1); 1693 (void)close(fds[1]); 1694 1695 Var_ExportVars(); 1696 1697 (void)execv(shellPath, UNCONST(args)); 1698 _exit(1); 1699 /*NOTREACHED*/ 1700 1701 case -1: 1702 *errfmt = "Couldn't exec \"%s\""; 1703 goto bad; 1704 1705 default: 1706 /* 1707 * No need for the writing half 1708 */ 1709 (void)close(fds[1]); 1710 1711 savederr = 0; 1712 Buf_Init(&buf, 0); 1713 1714 do { 1715 char result[BUFSIZ]; 1716 bytes_read = read(fds[0], result, sizeof(result)); 1717 if (bytes_read > 0) 1718 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1719 } 1720 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1721 if (bytes_read == -1) 1722 savederr = errno; 1723 1724 /* 1725 * Close the input side of the pipe. 1726 */ 1727 (void)close(fds[0]); 1728 1729 /* 1730 * Wait for the process to exit. 1731 */ 1732 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1733 JobReapChild(pid, status, FALSE); 1734 continue; 1735 } 1736 res_len = Buf_Len(&buf); 1737 res = Buf_Destroy(&buf, FALSE); 1738 1739 if (savederr != 0) 1740 *errfmt = "Couldn't read shell's output for \"%s\""; 1741 1742 if (WIFSIGNALED(status)) 1743 *errfmt = "\"%s\" exited on a signal"; 1744 else if (WEXITSTATUS(status) != 0) 1745 *errfmt = "\"%s\" returned non-zero status"; 1746 1747 /* Convert newlines to spaces. A final newline is just stripped */ 1748 if (res_len > 0 && res[res_len - 1] == '\n') 1749 res[res_len - 1] = '\0'; 1750 for (cp = res; *cp != '\0'; cp++) 1751 if (*cp == '\n') 1752 *cp = ' '; 1753 break; 1754 } 1755 return res; 1756 bad: 1757 return bmake_strdup(""); 1758 } 1759 1760 /* Print a printf-style error message. 1761 * 1762 * This error message has no consequences, in particular it does not affect 1763 * the exit status. */ 1764 void 1765 Error(const char *fmt, ...) 1766 { 1767 va_list ap; 1768 FILE *err_file; 1769 1770 err_file = debug_file; 1771 if (err_file == stdout) 1772 err_file = stderr; 1773 (void)fflush(stdout); 1774 for (;;) { 1775 va_start(ap, fmt); 1776 fprintf(err_file, "%s: ", progname); 1777 (void)vfprintf(err_file, fmt, ap); 1778 va_end(ap); 1779 (void)fprintf(err_file, "\n"); 1780 (void)fflush(err_file); 1781 if (err_file == stderr) 1782 break; 1783 err_file = stderr; 1784 } 1785 } 1786 1787 /* Produce a Fatal error message, then exit immediately. 1788 * 1789 * If jobs are running, waits for them to finish. */ 1790 void 1791 Fatal(const char *fmt, ...) 1792 { 1793 va_list ap; 1794 1795 va_start(ap, fmt); 1796 if (jobsRunning) 1797 Job_Wait(); 1798 1799 (void)fflush(stdout); 1800 (void)vfprintf(stderr, fmt, ap); 1801 va_end(ap); 1802 (void)fprintf(stderr, "\n"); 1803 (void)fflush(stderr); 1804 1805 PrintOnError(NULL, NULL); 1806 1807 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1808 Targ_PrintGraph(2); 1809 Trace_Log(MAKEERROR, 0); 1810 exit(2); /* Not 1 so -q can distinguish error */ 1811 } 1812 1813 /* 1814 * Punt -- 1815 * Major exception once jobs are being created. Kills all jobs, prints 1816 * a message and exits. 1817 * 1818 * Results: 1819 * None 1820 * 1821 * Side Effects: 1822 * All children are killed indiscriminately and the program Lib_Exits 1823 */ 1824 void 1825 Punt(const char *fmt, ...) 1826 { 1827 va_list ap; 1828 1829 va_start(ap, fmt); 1830 (void)fflush(stdout); 1831 (void)fprintf(stderr, "%s: ", progname); 1832 (void)vfprintf(stderr, fmt, ap); 1833 va_end(ap); 1834 (void)fprintf(stderr, "\n"); 1835 (void)fflush(stderr); 1836 1837 PrintOnError(NULL, NULL); 1838 1839 DieHorribly(); 1840 } 1841 1842 /*- 1843 * DieHorribly -- 1844 * Exit without giving a message. 1845 * 1846 * Results: 1847 * None 1848 * 1849 * Side Effects: 1850 * A big one... 1851 */ 1852 void 1853 DieHorribly(void) 1854 { 1855 if (jobsRunning) 1856 Job_AbortAll(); 1857 if (DEBUG(GRAPH2)) 1858 Targ_PrintGraph(2); 1859 Trace_Log(MAKEERROR, 0); 1860 exit(2); /* Not 1, so -q can distinguish error */ 1861 } 1862 1863 /* 1864 * Finish -- 1865 * Called when aborting due to errors in child shell to signal 1866 * abnormal exit. 1867 * 1868 * Results: 1869 * None 1870 * 1871 * Side Effects: 1872 * The program exits 1873 */ 1874 void 1875 Finish(int errors) 1876 /* number of errors encountered in Make_Make */ 1877 { 1878 if (dieQuietly(NULL, -1)) 1879 exit(2); 1880 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1881 } 1882 1883 /* 1884 * eunlink -- 1885 * Remove a file carefully, avoiding directories. 1886 */ 1887 int 1888 eunlink(const char *file) 1889 { 1890 struct stat st; 1891 1892 if (lstat(file, &st) == -1) 1893 return -1; 1894 1895 if (S_ISDIR(st.st_mode)) { 1896 errno = EISDIR; 1897 return -1; 1898 } 1899 return unlink(file); 1900 } 1901 1902 static void 1903 write_all(int fd, const void *data, size_t n) 1904 { 1905 const char *mem = data; 1906 1907 while (n > 0) { 1908 ssize_t written = write(fd, mem, n); 1909 if (written == -1 && errno == EAGAIN) 1910 continue; 1911 if (written == -1) 1912 break; 1913 mem += written; 1914 n -= (size_t)written; 1915 } 1916 } 1917 1918 /* 1919 * execDie -- 1920 * Print why exec failed, avoiding stdio. 1921 */ 1922 void MAKE_ATTR_DEAD 1923 execDie(const char *af, const char *av) 1924 { 1925 Buffer buf; 1926 1927 Buf_Init(&buf, 0); 1928 Buf_AddStr(&buf, progname); 1929 Buf_AddStr(&buf, ": "); 1930 Buf_AddStr(&buf, af); 1931 Buf_AddStr(&buf, "("); 1932 Buf_AddStr(&buf, av); 1933 Buf_AddStr(&buf, ") failed ("); 1934 Buf_AddStr(&buf, strerror(errno)); 1935 Buf_AddStr(&buf, ")\n"); 1936 1937 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 1938 1939 Buf_Destroy(&buf, TRUE); 1940 _exit(1); 1941 } 1942 1943 /* 1944 * usage -- 1945 * exit with usage message 1946 */ 1947 static void 1948 usage(void) 1949 { 1950 char *p; 1951 if ((p = strchr(progname, '[')) != NULL) 1952 *p = '\0'; 1953 1954 (void)fprintf(stderr, 1955 "usage: %s [-BeikNnqrstWwX] \n" 1956 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1957 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1958 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1959 progname); 1960 exit(2); 1961 } 1962 1963 /* 1964 * realpath(3) can get expensive, cache results... 1965 */ 1966 static GNode *cached_realpaths = NULL; 1967 1968 static GNode * 1969 get_cached_realpaths(void) 1970 { 1971 1972 if (!cached_realpaths) { 1973 cached_realpaths = Targ_NewGN("Realpath"); 1974 #ifndef DEBUG_REALPATH_CACHE 1975 cached_realpaths->flags = INTERNAL; 1976 #endif 1977 } 1978 1979 return cached_realpaths; 1980 } 1981 1982 /* purge any relative paths */ 1983 static void 1984 purge_cached_realpaths(void) 1985 { 1986 GNode *cache = get_cached_realpaths(); 1987 HashEntry *he, *nhe; 1988 HashIter hi; 1989 1990 HashIter_Init(&hi, &cache->context); 1991 he = HashIter_Next(&hi); 1992 while (he != NULL) { 1993 nhe = HashIter_Next(&hi); 1994 if (he->key[0] != '/') { 1995 if (DEBUG(DIR)) 1996 fprintf(stderr, "cached_realpath: purging %s\n", he->key); 1997 Hash_DeleteEntry(&cache->context, he); 1998 } 1999 he = nhe; 2000 } 2001 } 2002 2003 char * 2004 cached_realpath(const char *pathname, char *resolved) 2005 { 2006 GNode *cache; 2007 const char *rp; 2008 char *cp; 2009 2010 if (!pathname || !pathname[0]) 2011 return NULL; 2012 2013 cache = get_cached_realpaths(); 2014 2015 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 2016 /* a hit */ 2017 strncpy(resolved, rp, MAXPATHLEN); 2018 resolved[MAXPATHLEN - 1] = '\0'; 2019 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2020 Var_Set(pathname, rp, cache); 2021 } /* else should we negative-cache? */ 2022 2023 bmake_free(cp); 2024 return rp ? resolved : NULL; 2025 } 2026 2027 /* 2028 * Return true if we should die without noise. 2029 * For example our failing child was a sub-make 2030 * or failure happend elsewhere. 2031 */ 2032 int 2033 dieQuietly(GNode *gn, int bf) 2034 { 2035 static int quietly = -1; 2036 2037 if (quietly < 0) { 2038 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2039 quietly = 0; 2040 else if (bf >= 0) 2041 quietly = bf; 2042 else 2043 quietly = gn != NULL ? ((gn->type & (OP_MAKE)) != 0) : 0; 2044 } 2045 return quietly; 2046 } 2047 2048 static void 2049 SetErrorVars(GNode *gn) 2050 { 2051 StringListNode *ln; 2052 2053 /* 2054 * We can print this even if there is no .ERROR target. 2055 */ 2056 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2057 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2058 2059 for (ln = gn->commands->first; ln != NULL; ln = ln->next) { 2060 const char *cmd = ln->datum; 2061 2062 if (cmd == NULL) 2063 break; 2064 Var_Append(".ERROR_CMD", cmd, VAR_GLOBAL); 2065 } 2066 } 2067 2068 void 2069 PrintOnError(GNode *gn, const char *s) 2070 { 2071 static GNode *en = NULL; 2072 const char *expr; 2073 char *cp; 2074 2075 if (DEBUG(HASH)) { 2076 Targ_Stats(); 2077 Var_Stats(); 2078 } 2079 2080 /* we generally want to keep quiet if a sub-make died */ 2081 if (dieQuietly(gn, -1)) 2082 return; 2083 2084 if (s) 2085 printf("%s", s); 2086 2087 printf("\n%s: stopped in %s\n", progname, curdir); 2088 2089 if (en) 2090 return; /* we've been here! */ 2091 if (gn) 2092 SetErrorVars(gn); 2093 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2094 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2095 /* TODO: handle errors */ 2096 printf("%s", cp); 2097 free(cp); 2098 fflush(stdout); 2099 2100 /* 2101 * Finally, see if there is a .ERROR target, and run it if so. 2102 */ 2103 en = Targ_FindNode(".ERROR"); 2104 if (en) { 2105 en->type |= OP_SPECIAL; 2106 Compat_Make(en, en); 2107 } 2108 } 2109 2110 void 2111 Main_ExportMAKEFLAGS(Boolean first) 2112 { 2113 static Boolean once = TRUE; 2114 const char *expr; 2115 char *s; 2116 2117 if (once != first) 2118 return; 2119 once = FALSE; 2120 2121 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2122 (void)Var_Subst(expr, VAR_CMD, VARE_WANTRES, &s); 2123 /* TODO: handle errors */ 2124 if (s[0] != '\0') { 2125 #ifdef POSIX 2126 setenv("MAKEFLAGS", s, 1); 2127 #else 2128 setenv("MAKE", s, 1); 2129 #endif 2130 } 2131 } 2132 2133 char * 2134 getTmpdir(void) 2135 { 2136 static char *tmpdir = NULL; 2137 2138 if (!tmpdir) { 2139 struct stat st; 2140 2141 /* 2142 * Honor $TMPDIR but only if it is valid. 2143 * Ensure it ends with /. 2144 */ 2145 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2146 VARE_WANTRES, &tmpdir); 2147 /* TODO: handle errors */ 2148 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2149 free(tmpdir); 2150 tmpdir = bmake_strdup(_PATH_TMP); 2151 } 2152 } 2153 return tmpdir; 2154 } 2155 2156 /* 2157 * Create and open a temp file using "pattern". 2158 * If "fnamep" is provided set it to a copy of the filename created. 2159 * Otherwise unlink the file once open. 2160 */ 2161 int 2162 mkTempFile(const char *pattern, char **fnamep) 2163 { 2164 static char *tmpdir = NULL; 2165 char tfile[MAXPATHLEN]; 2166 int fd; 2167 2168 if (!pattern) 2169 pattern = TMPPAT; 2170 if (!tmpdir) 2171 tmpdir = getTmpdir(); 2172 if (pattern[0] == '/') { 2173 snprintf(tfile, sizeof(tfile), "%s", pattern); 2174 } else { 2175 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2176 } 2177 if ((fd = mkstemp(tfile)) < 0) 2178 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2179 if (fnamep) { 2180 *fnamep = bmake_strdup(tfile); 2181 } else { 2182 unlink(tfile); /* we just want the descriptor */ 2183 } 2184 return fd; 2185 } 2186 2187 /* 2188 * Convert a string representation of a boolean. 2189 * Anything that looks like "No", "False", "Off", "0" etc, 2190 * is FALSE, otherwise TRUE. 2191 */ 2192 Boolean 2193 s2Boolean(const char *s, Boolean bf) 2194 { 2195 if (s) { 2196 switch(*s) { 2197 case '\0': /* not set - the default wins */ 2198 break; 2199 case '0': 2200 case 'F': 2201 case 'f': 2202 case 'N': 2203 case 'n': 2204 bf = FALSE; 2205 break; 2206 case 'O': 2207 case 'o': 2208 switch (s[1]) { 2209 case 'F': 2210 case 'f': 2211 bf = FALSE; 2212 break; 2213 default: 2214 bf = TRUE; 2215 break; 2216 } 2217 break; 2218 default: 2219 bf = TRUE; 2220 break; 2221 } 2222 } 2223 return bf; 2224 } 2225 2226 /* 2227 * Return a Boolean based on setting of a knob. 2228 * 2229 * If the knob is not set, the supplied default is the return value. 2230 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2231 * is FALSE, otherwise TRUE. 2232 */ 2233 Boolean 2234 getBoolean(const char *name, Boolean fallback) 2235 { 2236 char *expr = str_concat3("${", name, ":U:tl}"); 2237 char *value; 2238 Boolean res; 2239 2240 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 2241 /* TODO: handle errors */ 2242 res = s2Boolean(value, fallback); 2243 free(value); 2244 free(expr); 2245 return res; 2246 } 2247
Indexes created Tue Sep 23 07:09:52 GMT 2025