main.c revision 1.339
1 /* $NetBSD: main.c,v 1.339 2020/09/22 05:12:08 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 <ctype.h> 110 #include <errno.h> 111 #include <signal.h> 112 #include <stdarg.h> 113 #include <stdio.h> 114 #include <stdlib.h> 115 #include <time.h> 116 117 #include "make.h" 118 #include "hash.h" 119 #include "dir.h" 120 #include "job.h" 121 #include "pathnames.h" 122 #include "trace.h" 123 124 #ifdef USE_IOVEC 125 #include <sys/uio.h> 126 #endif 127 128 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 129 MAKE_RCSID("$NetBSD: main.c,v 1.339 2020/09/22 05:12:08 rillig Exp $"); 130 #if defined(MAKE_NATIVE) && !defined(lint) 131 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 132 The Regents of the University of California. All rights reserved."); 133 #endif 134 135 #ifndef DEFMAXLOCAL 136 #define DEFMAXLOCAL DEFMAXJOBS 137 #endif 138 139 StringList * create; /* Targets to be made */ 140 time_t now; /* Time at start of make */ 141 GNode *DEFAULT; /* .DEFAULT node */ 142 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 143 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 144 145 static Boolean noBuiltins; /* -r flag */ 146 static StringList * makefiles; /* ordered list of makefiles to read */ 147 static int printVars; /* -[vV] argument */ 148 #define COMPAT_VARS 1 149 #define EXPAND_VARS 2 150 static StringList * variables; /* list of variables to print 151 * (for -v and -V) */ 152 int maxJobs; /* -j argument */ 153 static int maxJobTokens; /* -j argument */ 154 Boolean compatMake; /* -B argument */ 155 int debug; /* -d argument */ 156 Boolean debugVflag; /* -dV */ 157 Boolean noExecute; /* -n flag */ 158 Boolean noRecursiveExecute; /* -N flag */ 159 Boolean keepgoing; /* -k flag */ 160 Boolean queryFlag; /* -q flag */ 161 Boolean touchFlag; /* -t flag */ 162 Boolean enterFlag; /* -w flag */ 163 Boolean enterFlagObj; /* -w and objdir != srcdir */ 164 Boolean ignoreErrors; /* -i flag */ 165 Boolean beSilent; /* -s flag */ 166 Boolean oldVars; /* variable substitution style */ 167 Boolean checkEnvFirst; /* -e flag */ 168 Boolean parseWarnFatal; /* -W flag */ 169 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 170 Boolean varNoExportEnv; /* -X flag */ 171 Boolean doing_depend; /* Set while reading .depend */ 172 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 173 static const char * tracefile; 174 static void MainParseArgs(int, char **); 175 static int ReadMakefile(const char *); 176 static void usage(void) MAKE_ATTR_DEAD; 177 static void purge_cached_realpaths(void); 178 179 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 180 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 181 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 182 char *progname; /* the program name */ 183 char *makeDependfile; 184 pid_t myPid; 185 int makelevel; 186 187 FILE *debug_file; 188 189 Boolean forceJobs = FALSE; 190 191 extern SearchPath *parseIncPath; 192 193 /* 194 * For compatibility with the POSIX version of MAKEFLAGS that includes 195 * all the options with out -, convert flags to -f -l -a -g -s. 196 */ 197 static char * 198 explode(const char *flags) 199 { 200 size_t len; 201 char *nf, *st; 202 const char *f; 203 204 if (flags == NULL) 205 return NULL; 206 207 for (f = flags; *f; f++) 208 if (!ch_isalpha(*f)) 209 break; 210 211 if (*f) 212 return bmake_strdup(flags); 213 214 len = strlen(flags); 215 st = nf = bmake_malloc(len * 3 + 1); 216 while (*flags) { 217 *nf++ = '-'; 218 *nf++ = *flags++; 219 *nf++ = ' '; 220 } 221 *nf = '\0'; 222 return st; 223 } 224 225 static void 226 parse_debug_options(const char *argvalue) 227 { 228 const char *modules; 229 const char *mode; 230 char *fname; 231 int len; 232 233 for (modules = argvalue; *modules; ++modules) { 234 switch (*modules) { 235 case 'A': 236 debug = ~(0|DEBUG_LINT); 237 break; 238 case 'a': 239 debug |= DEBUG_ARCH; 240 break; 241 case 'C': 242 debug |= DEBUG_CWD; 243 break; 244 case 'c': 245 debug |= DEBUG_COND; 246 break; 247 case 'd': 248 debug |= DEBUG_DIR; 249 break; 250 case 'e': 251 debug |= DEBUG_ERROR; 252 break; 253 case 'f': 254 debug |= DEBUG_FOR; 255 break; 256 case 'g': 257 if (modules[1] == '1') { 258 debug |= DEBUG_GRAPH1; 259 ++modules; 260 } 261 else if (modules[1] == '2') { 262 debug |= DEBUG_GRAPH2; 263 ++modules; 264 } 265 else if (modules[1] == '3') { 266 debug |= DEBUG_GRAPH3; 267 ++modules; 268 } 269 break; 270 case 'h': 271 debug |= DEBUG_HASH; 272 break; 273 case 'j': 274 debug |= DEBUG_JOB; 275 break; 276 case 'L': 277 debug |= DEBUG_LINT; 278 break; 279 case 'l': 280 debug |= DEBUG_LOUD; 281 break; 282 case 'M': 283 debug |= DEBUG_META; 284 break; 285 case 'm': 286 debug |= DEBUG_MAKE; 287 break; 288 case 'n': 289 debug |= DEBUG_SCRIPT; 290 break; 291 case 'p': 292 debug |= DEBUG_PARSE; 293 break; 294 case 's': 295 debug |= DEBUG_SUFF; 296 break; 297 case 't': 298 debug |= DEBUG_TARG; 299 break; 300 case 'V': 301 debugVflag = TRUE; 302 break; 303 case 'v': 304 debug |= DEBUG_VAR; 305 break; 306 case 'x': 307 debug |= DEBUG_SHELL; 308 break; 309 case 'F': 310 if (debug_file != stdout && debug_file != stderr) 311 fclose(debug_file); 312 if (*++modules == '+') { 313 modules++; 314 mode = "a"; 315 } else 316 mode = "w"; 317 if (strcmp(modules, "stdout") == 0) { 318 debug_file = stdout; 319 goto debug_setbuf; 320 } 321 if (strcmp(modules, "stderr") == 0) { 322 debug_file = stderr; 323 goto debug_setbuf; 324 } 325 len = strlen(modules); 326 fname = bmake_malloc(len + 20); 327 memcpy(fname, modules, len + 1); 328 /* Let the filename be modified by the pid */ 329 if (strcmp(fname + len - 3, ".%d") == 0) 330 snprintf(fname + len - 2, 20, "%d", getpid()); 331 debug_file = fopen(fname, mode); 332 if (!debug_file) { 333 fprintf(stderr, "Cannot open debug file %s\n", 334 fname); 335 usage(); 336 } 337 free(fname); 338 goto debug_setbuf; 339 default: 340 (void)fprintf(stderr, 341 "%s: illegal argument to d option -- %c\n", 342 progname, *modules); 343 usage(); 344 } 345 } 346 debug_setbuf: 347 /* 348 * Make the debug_file unbuffered, and make 349 * stdout line buffered (unless debugfile == stdout). 350 */ 351 setvbuf(debug_file, NULL, _IONBF, 0); 352 if (debug_file != stdout) { 353 setvbuf(stdout, NULL, _IOLBF, 0); 354 } 355 } 356 357 /* 358 * does path contain any relative components 359 */ 360 static Boolean 361 is_relpath(const char *path) 362 { 363 const char *cp; 364 365 if (path[0] != '/') 366 return TRUE; 367 cp = path; 368 while ((cp = strstr(cp, "/.")) != NULL) { 369 cp += 2; 370 if (cp[0] == '/' || cp[0] == '\0') 371 return TRUE; 372 else if (cp[0] == '.') { 373 if (cp[1] == '/' || cp[1] == '\0') 374 return TRUE; 375 } 376 } 377 return FALSE; 378 } 379 380 /*- 381 * MainParseArgs -- 382 * Parse a given argument vector. Called from main() and from 383 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 384 * 385 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 386 * 387 * Results: 388 * None 389 * 390 * Side Effects: 391 * Various global and local flags will be set depending on the flags 392 * given 393 */ 394 static void 395 MainParseArgs(int argc, char **argv) 396 { 397 char *p; 398 char c = '?'; 399 int arginc; 400 char *argvalue; 401 const char *getopt_def; 402 struct stat sa, sb; 403 char *optscan; 404 Boolean inOption, dashDash = FALSE; 405 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 406 407 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w" 408 /* Can't actually use getopt(3) because rescanning is not portable */ 409 410 getopt_def = OPTFLAGS; 411 rearg: 412 inOption = FALSE; 413 optscan = NULL; 414 while(argc > 1) { 415 char *getopt_spec; 416 if(!inOption) 417 optscan = argv[1]; 418 c = *optscan++; 419 arginc = 0; 420 if(inOption) { 421 if(c == '\0') { 422 ++argv; 423 --argc; 424 inOption = FALSE; 425 continue; 426 } 427 } else { 428 if (c != '-' || dashDash) 429 break; 430 inOption = TRUE; 431 c = *optscan++; 432 } 433 /* '-' found at some earlier point */ 434 getopt_spec = strchr(getopt_def, c); 435 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 436 /* -<something> found, and <something> should have an arg */ 437 inOption = FALSE; 438 arginc = 1; 439 argvalue = optscan; 440 if(*argvalue == '\0') { 441 if (argc < 3) 442 goto noarg; 443 argvalue = argv[2]; 444 arginc = 2; 445 } 446 } else { 447 argvalue = NULL; 448 } 449 switch(c) { 450 case '\0': 451 arginc = 1; 452 inOption = FALSE; 453 break; 454 case 'B': 455 compatMake = TRUE; 456 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 457 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 458 break; 459 case 'C': 460 if (chdir(argvalue) == -1) { 461 (void)fprintf(stderr, 462 "%s: chdir %s: %s\n", 463 progname, argvalue, 464 strerror(errno)); 465 exit(1); 466 } 467 if (getcwd(curdir, MAXPATHLEN) == NULL) { 468 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 469 exit(2); 470 } 471 if (!is_relpath(argvalue) && 472 stat(argvalue, &sa) != -1 && 473 stat(curdir, &sb) != -1 && 474 sa.st_ino == sb.st_ino && 475 sa.st_dev == sb.st_dev) 476 strncpy(curdir, argvalue, MAXPATHLEN); 477 ignorePWD = TRUE; 478 break; 479 case 'D': 480 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 481 Var_Set(argvalue, "1", VAR_GLOBAL); 482 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 483 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 484 break; 485 case 'I': 486 if (argvalue == NULL) goto noarg; 487 Parse_AddIncludeDir(argvalue); 488 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 489 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 490 break; 491 case 'J': 492 if (argvalue == NULL) goto noarg; 493 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 494 (void)fprintf(stderr, 495 "%s: internal error -- J option malformed (%s)\n", 496 progname, argvalue); 497 usage(); 498 } 499 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 500 (fcntl(jp_1, F_GETFD, 0) < 0)) { 501 #if 0 502 (void)fprintf(stderr, 503 "%s: ###### warning -- J descriptors were closed!\n", 504 progname); 505 exit(2); 506 #endif 507 jp_0 = -1; 508 jp_1 = -1; 509 compatMake = TRUE; 510 } else { 511 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 512 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 513 } 514 break; 515 case 'N': 516 noExecute = TRUE; 517 noRecursiveExecute = TRUE; 518 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 519 break; 520 case 'S': 521 keepgoing = FALSE; 522 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 523 break; 524 case 'T': 525 if (argvalue == NULL) goto noarg; 526 tracefile = bmake_strdup(argvalue); 527 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 528 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 529 break; 530 case 'V': 531 case 'v': 532 if (argvalue == NULL) goto noarg; 533 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 534 Lst_Append(variables, argvalue); 535 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 536 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 537 break; 538 case 'W': 539 parseWarnFatal = TRUE; 540 break; 541 case 'X': 542 varNoExportEnv = TRUE; 543 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 544 break; 545 case 'd': 546 if (argvalue == NULL) goto noarg; 547 /* If '-d-opts' don't pass to children */ 548 if (argvalue[0] == '-') 549 argvalue++; 550 else { 551 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 552 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 553 } 554 parse_debug_options(argvalue); 555 break; 556 case 'e': 557 checkEnvFirst = TRUE; 558 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 559 break; 560 case 'f': 561 if (argvalue == NULL) goto noarg; 562 Lst_Append(makefiles, argvalue); 563 break; 564 case 'i': 565 ignoreErrors = TRUE; 566 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 567 break; 568 case 'j': 569 if (argvalue == NULL) goto noarg; 570 forceJobs = TRUE; 571 maxJobs = strtol(argvalue, &p, 0); 572 if (*p != '\0' || maxJobs < 1) { 573 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 574 progname); 575 exit(1); 576 } 577 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 578 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 579 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 580 maxJobTokens = maxJobs; 581 break; 582 case 'k': 583 keepgoing = TRUE; 584 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 585 break; 586 case 'm': 587 if (argvalue == NULL) goto noarg; 588 /* look for magic parent directory search string */ 589 if (strncmp(".../", argvalue, 4) == 0) { 590 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 591 found_path, sizeof(found_path))) 592 break; /* nothing doing */ 593 (void)Dir_AddDir(sysIncPath, found_path); 594 } else { 595 (void)Dir_AddDir(sysIncPath, argvalue); 596 } 597 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 598 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 599 break; 600 case 'n': 601 noExecute = TRUE; 602 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 603 break; 604 case 'q': 605 queryFlag = TRUE; 606 /* Kind of nonsensical, wot? */ 607 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 608 break; 609 case 'r': 610 noBuiltins = TRUE; 611 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 612 break; 613 case 's': 614 beSilent = TRUE; 615 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 616 break; 617 case 't': 618 touchFlag = TRUE; 619 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 620 break; 621 case 'w': 622 enterFlag = TRUE; 623 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 624 break; 625 case '-': 626 dashDash = TRUE; 627 break; 628 default: 629 case '?': 630 usage(); 631 } 632 argv += arginc; 633 argc -= arginc; 634 } 635 636 oldVars = TRUE; 637 638 /* 639 * See if the rest of the arguments are variable assignments and 640 * perform them if so. Else take them to be targets and stuff them 641 * on the end of the "create" list. 642 */ 643 for (; argc > 1; ++argv, --argc) 644 if (Parse_IsVar(argv[1])) { 645 Parse_DoVar(argv[1], VAR_CMD); 646 } else { 647 if (!*argv[1]) 648 Punt("illegal (null) argument."); 649 if (*argv[1] == '-' && !dashDash) 650 goto rearg; 651 Lst_Append(create, bmake_strdup(argv[1])); 652 } 653 654 return; 655 noarg: 656 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 657 progname, c); 658 usage(); 659 } 660 661 /*- 662 * Main_ParseArgLine -- 663 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 664 * is encountered and by main() when reading the .MAKEFLAGS envariable. 665 * Takes a line of arguments and breaks it into its 666 * component words and passes those words and the number of them to the 667 * MainParseArgs function. 668 * The line should have all its leading whitespace removed. 669 * 670 * Input: 671 * line Line to fracture 672 * 673 * Results: 674 * None 675 * 676 * Side Effects: 677 * Only those that come from the various arguments. 678 */ 679 void 680 Main_ParseArgLine(const char *line) 681 { 682 Words words; 683 char *p1; 684 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 685 char *buf; 686 687 if (line == NULL) 688 return; 689 for (; *line == ' '; ++line) 690 continue; 691 if (!*line) 692 return; 693 694 buf = str_concat3(argv0, " ", line); 695 free(p1); 696 697 words = Str_Words(buf, TRUE); 698 if (words.words == NULL) { 699 Error("Unterminated quoted string [%s]", buf); 700 free(buf); 701 return; 702 } 703 free(buf); 704 MainParseArgs((int)words.len, words.words); 705 706 Words_Free(words); 707 } 708 709 Boolean 710 Main_SetObjdir(const char *fmt, ...) 711 { 712 struct stat sb; 713 char *path; 714 char buf[MAXPATHLEN + 1]; 715 char buf2[MAXPATHLEN + 1]; 716 Boolean rc = FALSE; 717 va_list ap; 718 719 va_start(ap, fmt); 720 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 721 va_end(ap); 722 723 if (path[0] != '/') { 724 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 725 path = buf2; 726 } 727 728 /* look for the directory and try to chdir there */ 729 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 730 if (chdir(path)) { 731 (void)fprintf(stderr, "make warning: %s: %s.\n", 732 path, strerror(errno)); 733 } else { 734 snprintf(objdir, sizeof objdir, "%s", path); 735 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 736 setenv("PWD", objdir, 1); 737 Dir_InitDot(); 738 purge_cached_realpaths(); 739 rc = TRUE; 740 if (enterFlag && strcmp(objdir, curdir) != 0) 741 enterFlagObj = TRUE; 742 } 743 } 744 745 return rc; 746 } 747 748 static Boolean 749 Main_SetVarObjdir(const char *var, const char *suffix) 750 { 751 char *path_freeIt; 752 const char *path = Var_Value(var, VAR_CMD, &path_freeIt); 753 const char *xpath; 754 char *xpath_freeIt; 755 756 if (path == NULL || path[0] == '\0') { 757 bmake_free(path_freeIt); 758 return FALSE; 759 } 760 761 /* expand variable substitutions */ 762 xpath = path; 763 xpath_freeIt = NULL; 764 if (strchr(path, '$') != 0) 765 xpath = xpath_freeIt = Var_Subst(path, VAR_GLOBAL, 766 VARE_WANTRES); 767 768 (void)Main_SetObjdir("%s%s", xpath, suffix); 769 770 bmake_free(xpath_freeIt); 771 bmake_free(path_freeIt); 772 return TRUE; 773 } 774 775 /* Read and parse the makefile. 776 * Return TRUE if reading the makefile succeeded, for Lst_Find. */ 777 static Boolean 778 ReadMakefileSucceeded(const void *fname, const void *unused) 779 { 780 return ReadMakefile(fname) == 0; 781 } 782 783 /* Read and parse the makefile. 784 * Return TRUE if reading the makefile failed, for Lst_Find. */ 785 static Boolean 786 ReadMakefileFailed(const void *fname, const void *unused) 787 { 788 return ReadMakefile(fname) != 0; 789 } 790 791 int 792 str2Lst_Append(StringList *lp, char *str, const char *sep) 793 { 794 char *cp; 795 int n; 796 797 if (!sep) 798 sep = " \t"; 799 800 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 801 Lst_Append(lp, cp); 802 n++; 803 } 804 return n; 805 } 806 807 #ifdef SIGINFO 808 /*ARGSUSED*/ 809 static void 810 siginfo(int signo MAKE_ATTR_UNUSED) 811 { 812 char dir[MAXPATHLEN]; 813 char str[2 * MAXPATHLEN]; 814 int len; 815 if (getcwd(dir, sizeof(dir)) == NULL) 816 return; 817 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 818 if (len > 0) 819 (void)write(STDERR_FILENO, str, (size_t)len); 820 } 821 #endif 822 823 /* 824 * Allow makefiles some control over the mode we run in. 825 */ 826 void 827 MakeMode(const char *mode) 828 { 829 char *mode_freeIt = NULL; 830 831 if (mode == NULL) 832 mode = mode_freeIt = Var_Subst("${" MAKE_MODE ":tl}", 833 VAR_GLOBAL, VARE_WANTRES); 834 835 if (mode[0] != '\0') { 836 if (strstr(mode, "compat")) { 837 compatMake = TRUE; 838 forceJobs = FALSE; 839 } 840 #if USE_META 841 if (strstr(mode, "meta")) 842 meta_mode_init(mode); 843 #endif 844 } 845 846 free(mode_freeIt); 847 } 848 849 static void 850 doPrintVars(void) 851 { 852 StringListNode *ln; 853 Boolean expandVars; 854 855 if (printVars == EXPAND_VARS) 856 expandVars = TRUE; 857 else if (debugVflag) 858 expandVars = FALSE; 859 else 860 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 861 862 for (ln = Lst_First(variables); ln != NULL; ln = LstNode_Next(ln)) { 863 char *var = LstNode_Datum(ln); 864 const char *value; 865 char *p1; 866 867 if (strchr(var, '$')) { 868 value = p1 = Var_Subst(var, VAR_GLOBAL, VARE_WANTRES); 869 } else if (expandVars) { 870 char tmp[128]; 871 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 872 873 if (len >= (int)sizeof(tmp)) 874 Fatal("%s: variable name too big: %s", 875 progname, var); 876 value = p1 = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 877 } else { 878 value = Var_Value(var, VAR_GLOBAL, &p1); 879 } 880 printf("%s\n", value ? value : ""); 881 bmake_free(p1); 882 } 883 } 884 885 static Boolean 886 runTargets(void) 887 { 888 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 889 Boolean outOfDate; /* FALSE if all targets up to date */ 890 891 /* 892 * Have now read the entire graph and need to make a list of 893 * targets to create. If none was given on the command line, 894 * we consult the parsing module to find the main target(s) 895 * to create. 896 */ 897 if (Lst_IsEmpty(create)) 898 targs = Parse_MainName(); 899 else 900 targs = Targ_FindList(create, TARG_CREATE); 901 902 if (!compatMake) { 903 /* 904 * Initialize job module before traversing the graph 905 * now that any .BEGIN and .END targets have been read. 906 * This is done only if the -q flag wasn't given 907 * (to prevent the .BEGIN from being executed should 908 * it exist). 909 */ 910 if (!queryFlag) { 911 Job_Init(); 912 jobsRunning = TRUE; 913 } 914 915 /* Traverse the graph, checking on all the targets */ 916 outOfDate = Make_Run(targs); 917 } else { 918 /* 919 * Compat_Init will take care of creating all the 920 * targets as well as initializing the module. 921 */ 922 Compat_Run(targs); 923 outOfDate = FALSE; 924 } 925 Lst_Free(targs); 926 return outOfDate; 927 } 928 929 /*- 930 * main -- 931 * The main function, for obvious reasons. Initializes variables 932 * and a few modules, then parses the arguments give it in the 933 * environment and on the command line. Reads the system makefile 934 * followed by either Makefile, makefile or the file given by the 935 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 936 * flags it has received by then uses either the Make or the Compat 937 * module to create the initial list of targets. 938 * 939 * Results: 940 * If -q was given, exits -1 if anything was out-of-date. Else it exits 941 * 0. 942 * 943 * Side Effects: 944 * The program exits when done. Targets are created. etc. etc. etc. 945 */ 946 int 947 main(int argc, char **argv) 948 { 949 Boolean outOfDate; /* FALSE if all targets up to date */ 950 struct stat sb, sa; 951 char *p1, *path; 952 char mdpath[MAXPATHLEN]; 953 const char *machine = getenv("MACHINE"); 954 const char *machine_arch = getenv("MACHINE_ARCH"); 955 char *syspath = getenv("MAKESYSPATH"); 956 StringList *sysMkPath; /* Path of sys.mk */ 957 char *cp = NULL, *start; 958 /* avoid faults on read-only strings */ 959 static char defsyspath[] = _PATH_DEFSYSPATH; 960 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 961 struct timeval rightnow; /* to initialize random seed */ 962 struct utsname utsname; 963 964 /* default to writing debug to stderr */ 965 debug_file = stderr; 966 967 #ifdef SIGINFO 968 (void)bmake_signal(SIGINFO, siginfo); 969 #endif 970 /* 971 * Set the seed to produce a different random sequence 972 * on each program execution. 973 */ 974 gettimeofday(&rightnow, NULL); 975 srandom(rightnow.tv_sec + rightnow.tv_usec); 976 977 if ((progname = strrchr(argv[0], '/')) != NULL) 978 progname++; 979 else 980 progname = argv[0]; 981 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 982 /* 983 * get rid of resource limit on file descriptors 984 */ 985 { 986 struct rlimit rl; 987 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 988 rl.rlim_cur != rl.rlim_max) { 989 rl.rlim_cur = rl.rlim_max; 990 (void)setrlimit(RLIMIT_NOFILE, &rl); 991 } 992 } 993 #endif 994 995 if (uname(&utsname) == -1) { 996 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 997 strerror(errno)); 998 exit(2); 999 } 1000 1001 /* 1002 * Get the name of this type of MACHINE from utsname 1003 * so we can share an executable for similar machines. 1004 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1005 * 1006 * Note that both MACHINE and MACHINE_ARCH are decided at 1007 * run-time. 1008 */ 1009 if (!machine) { 1010 #ifdef MAKE_NATIVE 1011 machine = utsname.machine; 1012 #else 1013 #ifdef MAKE_MACHINE 1014 machine = MAKE_MACHINE; 1015 #else 1016 machine = "unknown"; 1017 #endif 1018 #endif 1019 } 1020 1021 if (!machine_arch) { 1022 #ifdef MAKE_NATIVE 1023 static char machine_arch_buf[sizeof(utsname.machine)]; 1024 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1025 size_t len = sizeof(machine_arch_buf); 1026 1027 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1028 &len, NULL, 0) < 0) { 1029 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1030 strerror(errno)); 1031 exit(2); 1032 } 1033 1034 machine_arch = machine_arch_buf; 1035 #else 1036 #ifndef MACHINE_ARCH 1037 #ifdef MAKE_MACHINE_ARCH 1038 machine_arch = MAKE_MACHINE_ARCH; 1039 #else 1040 machine_arch = "unknown"; 1041 #endif 1042 #else 1043 machine_arch = MACHINE_ARCH; 1044 #endif 1045 #endif 1046 } 1047 1048 myPid = getpid(); /* remember this for vFork() */ 1049 1050 /* 1051 * Just in case MAKEOBJDIR wants us to do something tricky. 1052 */ 1053 Var_Init(); /* Initialize the lists of variables for 1054 * parsing arguments */ 1055 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1056 Var_Set("MACHINE", machine, VAR_GLOBAL); 1057 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1058 #ifdef MAKE_VERSION 1059 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1060 #endif 1061 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1062 /* 1063 * This is the traditional preference for makefiles. 1064 */ 1065 #ifndef MAKEFILE_PREFERENCE_LIST 1066 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1067 #endif 1068 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1069 VAR_GLOBAL); 1070 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1071 1072 create = Lst_Init(); 1073 makefiles = Lst_Init(); 1074 printVars = 0; 1075 debugVflag = FALSE; 1076 variables = Lst_Init(); 1077 beSilent = FALSE; /* Print commands as executed */ 1078 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1079 noExecute = FALSE; /* Execute all commands */ 1080 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1081 keepgoing = FALSE; /* Stop on error */ 1082 allPrecious = FALSE; /* Remove targets when interrupted */ 1083 deleteOnError = FALSE; /* Historical default behavior */ 1084 queryFlag = FALSE; /* This is not just a check-run */ 1085 noBuiltins = FALSE; /* Read the built-in rules */ 1086 touchFlag = FALSE; /* Actually update targets */ 1087 debug = 0; /* No debug verbosity, please. */ 1088 jobsRunning = FALSE; 1089 1090 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1091 maxJobTokens = maxJobs; 1092 compatMake = FALSE; /* No compat mode */ 1093 ignorePWD = FALSE; 1094 1095 /* 1096 * Initialize the parsing, directory and variable modules to prepare 1097 * for the reading of inclusion paths and variable settings on the 1098 * command line 1099 */ 1100 1101 /* 1102 * Initialize various variables. 1103 * MAKE also gets this name, for compatibility 1104 * .MAKEFLAGS gets set to the empty string just in case. 1105 * MFLAGS also gets initialized empty, for compatibility. 1106 */ 1107 Parse_Init(); 1108 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1109 /* 1110 * Leave alone if it is an absolute path, or if it does 1111 * not contain a '/' in which case we need to find it in 1112 * the path, like execvp(3) and the shells do. 1113 */ 1114 p1 = argv[0]; 1115 } else { 1116 /* 1117 * A relative path, canonicalize it. 1118 */ 1119 p1 = cached_realpath(argv[0], mdpath); 1120 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1121 p1 = argv[0]; /* realpath failed */ 1122 } 1123 } 1124 Var_Set("MAKE", p1, VAR_GLOBAL); 1125 Var_Set(".MAKE", p1, VAR_GLOBAL); 1126 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1127 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1128 Var_Set("MFLAGS", "", VAR_GLOBAL); 1129 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1130 /* some makefiles need to know this */ 1131 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1132 1133 /* 1134 * Set some other useful macros 1135 */ 1136 { 1137 char tmp[64], *ep; 1138 1139 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1140 if (makelevel < 0) 1141 makelevel = 0; 1142 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1143 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1144 snprintf(tmp, sizeof(tmp), "%u", myPid); 1145 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1146 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1147 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1148 } 1149 if (makelevel > 0) { 1150 char pn[1024]; 1151 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1152 progname = bmake_strdup(pn); 1153 } 1154 1155 #ifdef USE_META 1156 meta_init(); 1157 #endif 1158 Dir_Init(); 1159 1160 /* 1161 * First snag any flags out of the MAKE environment variable. 1162 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1163 * in a different format). 1164 */ 1165 #ifdef POSIX 1166 p1 = explode(getenv("MAKEFLAGS")); 1167 Main_ParseArgLine(p1); 1168 free(p1); 1169 #else 1170 Main_ParseArgLine(getenv("MAKE")); 1171 #endif 1172 1173 /* 1174 * Find where we are (now). 1175 * We take care of PWD for the automounter below... 1176 */ 1177 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1178 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1179 progname, strerror(errno)); 1180 exit(2); 1181 } 1182 1183 MainParseArgs(argc, argv); 1184 1185 if (enterFlag) 1186 printf("%s: Entering directory `%s'\n", progname, curdir); 1187 1188 /* 1189 * Verify that cwd is sane. 1190 */ 1191 if (stat(curdir, &sa) == -1) { 1192 (void)fprintf(stderr, "%s: %s: %s.\n", 1193 progname, curdir, strerror(errno)); 1194 exit(2); 1195 } 1196 1197 /* 1198 * All this code is so that we know where we are when we start up 1199 * on a different machine with pmake. 1200 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1201 * since the value of curdir can vary depending on how we got 1202 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1203 * or via subdir.mk in which case its likely a shell which does 1204 * not provide it. 1205 * So, to stop it breaking this case only, we ignore PWD if 1206 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1207 */ 1208 #ifndef NO_PWD_OVERRIDE 1209 if (!ignorePWD) { 1210 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1211 1212 if ((pwd = getenv("PWD")) != NULL && 1213 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1214 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1215 VAR_CMD, &ptmp2); 1216 1217 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1218 if (stat(pwd, &sb) == 0 && 1219 sa.st_ino == sb.st_ino && 1220 sa.st_dev == sb.st_dev) 1221 (void)strncpy(curdir, pwd, MAXPATHLEN); 1222 } 1223 } 1224 bmake_free(ptmp1); 1225 bmake_free(ptmp2); 1226 } 1227 #endif 1228 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1229 1230 /* 1231 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1232 * MAKEOBJDIR is set in the environment, try only that value 1233 * and fall back to .CURDIR if it does not exist. 1234 * 1235 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1236 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1237 * of these paths exist, just use .CURDIR. 1238 */ 1239 Dir_InitDir(curdir); 1240 (void)Main_SetObjdir("%s", curdir); 1241 1242 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1243 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1244 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1245 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1246 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1247 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1248 1249 /* 1250 * Initialize archive, target and suffix modules in preparation for 1251 * parsing the makefile(s) 1252 */ 1253 Arch_Init(); 1254 Targ_Init(); 1255 Suff_Init(); 1256 Trace_Init(tracefile); 1257 1258 DEFAULT = NULL; 1259 (void)time(&now); 1260 1261 Trace_Log(MAKESTART, NULL); 1262 1263 /* 1264 * Set up the .TARGETS variable to contain the list of targets to be 1265 * created. If none specified, make the variable empty -- the parser 1266 * will fill the thing in with the default or .MAIN target. 1267 */ 1268 if (!Lst_IsEmpty(create)) { 1269 StringListNode *ln; 1270 1271 for (ln = Lst_First(create); ln != NULL; ln = LstNode_Next(ln)) { 1272 char *name = LstNode_Datum(ln); 1273 Var_Append(".TARGETS", name, VAR_GLOBAL); 1274 } 1275 } else 1276 Var_Set(".TARGETS", "", VAR_GLOBAL); 1277 1278 1279 /* 1280 * If no user-supplied system path was given (through the -m option) 1281 * add the directories from the DEFSYSPATH (more than one may be given 1282 * as dir1:...:dirn) to the system include path. 1283 */ 1284 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1285 if (syspath == NULL || syspath[0] == '\0') 1286 syspath = defsyspath; 1287 else 1288 syspath = bmake_strdup(syspath); 1289 1290 for (start = syspath; *start != '\0'; start = cp) { 1291 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1292 continue; 1293 if (*cp == ':') { 1294 *cp++ = '\0'; 1295 } 1296 /* look for magic parent directory search string */ 1297 if (strncmp(".../", start, 4) != 0) { 1298 (void)Dir_AddDir(defIncPath, start); 1299 } else { 1300 if (Dir_FindHereOrAbove(curdir, start+4, 1301 found_path, sizeof(found_path))) { 1302 (void)Dir_AddDir(defIncPath, found_path); 1303 } 1304 } 1305 } 1306 if (syspath != defsyspath) 1307 free(syspath); 1308 1309 /* 1310 * Read in the built-in rules first, followed by the specified 1311 * makefiles, or the default makefile and Makefile, in that order, 1312 * if no makefiles were given on the command line. 1313 */ 1314 if (!noBuiltins) { 1315 StringListNode *ln; 1316 1317 sysMkPath = Lst_Init(); 1318 Dir_Expand(_PATH_DEFSYSMK, 1319 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1320 sysMkPath); 1321 if (Lst_IsEmpty(sysMkPath)) 1322 Fatal("%s: no system rules (%s).", progname, 1323 _PATH_DEFSYSMK); 1324 ln = Lst_Find(sysMkPath, ReadMakefileSucceeded, NULL); 1325 if (ln == NULL) 1326 Fatal("%s: cannot open %s.", progname, 1327 (char *)LstNode_Datum(Lst_First(sysMkPath))); 1328 } 1329 1330 if (!Lst_IsEmpty(makefiles)) { 1331 StringListNode *ln; 1332 1333 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1334 if (ln != NULL) 1335 Fatal("%s: cannot open %s.", progname, 1336 (char *)LstNode_Datum(ln)); 1337 } else { 1338 p1 = Var_Subst("${" MAKEFILE_PREFERENCE "}", 1339 VAR_CMD, VARE_WANTRES); 1340 (void)str2Lst_Append(makefiles, p1, NULL); 1341 (void)Lst_Find(makefiles, ReadMakefileSucceeded, NULL); 1342 free(p1); 1343 } 1344 1345 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1346 if (!noBuiltins || !printVars) { 1347 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE:T}", 1348 VAR_CMD, VARE_WANTRES); 1349 doing_depend = TRUE; 1350 (void)ReadMakefile(makeDependfile); 1351 doing_depend = FALSE; 1352 } 1353 1354 if (enterFlagObj) 1355 printf("%s: Entering directory `%s'\n", progname, objdir); 1356 1357 MakeMode(NULL); 1358 1359 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1360 bmake_free(p1); 1361 1362 if (!forceJobs && !compatMake && 1363 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1364 char *value; 1365 int n; 1366 1367 value = Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES); 1368 n = strtol(value, NULL, 0); 1369 if (n < 1) { 1370 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1371 progname); 1372 exit(1); 1373 } 1374 if (n != maxJobs) { 1375 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1376 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1377 } 1378 maxJobs = n; 1379 maxJobTokens = maxJobs; 1380 forceJobs = TRUE; 1381 free(value); 1382 } 1383 1384 /* 1385 * Be compatible if user did not specify -j and did not explicitly 1386 * turned compatibility on 1387 */ 1388 if (!compatMake && !forceJobs) { 1389 compatMake = TRUE; 1390 } 1391 1392 if (!compatMake) 1393 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1394 if (DEBUG(JOB)) 1395 fprintf(debug_file, 1396 "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1397 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1398 1399 if (!printVars) 1400 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1401 1402 1403 /* 1404 * For compatibility, look at the directories in the VPATH variable 1405 * and add them to the search path, if the variable is defined. The 1406 * variable's value is in the same format as the PATH envariable, i.e. 1407 * <directory>:<directory>:<directory>... 1408 */ 1409 if (Var_Exists("VPATH", VAR_CMD)) { 1410 char *vpath, savec; 1411 /* 1412 * GCC stores string constants in read-only memory, but 1413 * Var_Subst will want to write this thing, so store it 1414 * in an array 1415 */ 1416 static char VPATH[] = "${VPATH}"; 1417 1418 vpath = Var_Subst(VPATH, VAR_CMD, VARE_WANTRES); 1419 path = vpath; 1420 do { 1421 /* skip to end of directory */ 1422 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1423 continue; 1424 /* Save terminator character so know when to stop */ 1425 savec = *cp; 1426 *cp = '\0'; 1427 /* Add directory to search path */ 1428 (void)Dir_AddDir(dirSearchPath, path); 1429 *cp = savec; 1430 path = cp + 1; 1431 } while (savec == ':'); 1432 free(vpath); 1433 } 1434 1435 /* 1436 * Now that all search paths have been read for suffixes et al, it's 1437 * time to add the default search path to their lists... 1438 */ 1439 Suff_DoPaths(); 1440 1441 /* 1442 * Propagate attributes through :: dependency lists. 1443 */ 1444 Targ_Propagate(); 1445 1446 /* print the initial graph, if the user requested it */ 1447 if (DEBUG(GRAPH1)) 1448 Targ_PrintGraph(1); 1449 1450 /* print the values of any variables requested by the user */ 1451 if (printVars) { 1452 doPrintVars(); 1453 outOfDate = FALSE; 1454 } else { 1455 outOfDate = runTargets(); 1456 } 1457 1458 #ifdef CLEANUP 1459 Lst_Free(variables); 1460 Lst_Free(makefiles); 1461 Lst_Destroy(create, free); 1462 #endif 1463 1464 /* print the graph now it's been processed if the user requested it */ 1465 if (DEBUG(GRAPH2)) 1466 Targ_PrintGraph(2); 1467 1468 Trace_Log(MAKEEND, 0); 1469 1470 if (enterFlagObj) 1471 printf("%s: Leaving directory `%s'\n", progname, objdir); 1472 if (enterFlag) 1473 printf("%s: Leaving directory `%s'\n", progname, curdir); 1474 1475 #ifdef USE_META 1476 meta_finish(); 1477 #endif 1478 Suff_End(); 1479 Targ_End(); 1480 Arch_End(); 1481 Var_End(); 1482 Parse_End(); 1483 Dir_End(); 1484 Job_End(); 1485 Trace_End(); 1486 1487 return outOfDate ? 1 : 0; 1488 } 1489 1490 /* Open and parse the given makefile, with all its side effects. 1491 * 1492 * Results: 1493 * 0 if ok. -1 if couldn't open file. 1494 */ 1495 static int 1496 ReadMakefile(const char *fname) 1497 { 1498 int fd; 1499 char *name, *path = NULL; 1500 1501 if (!strcmp(fname, "-")) { 1502 Parse_File(NULL /*stdin*/, -1); 1503 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1504 } else { 1505 /* if we've chdir'd, rebuild the path name */ 1506 if (strcmp(curdir, objdir) && *fname != '/') { 1507 path = str_concat3(curdir, "/", fname); 1508 fd = open(path, O_RDONLY); 1509 if (fd != -1) { 1510 fname = path; 1511 goto found; 1512 } 1513 free(path); 1514 1515 /* If curdir failed, try objdir (ala .depend) */ 1516 path = str_concat3(objdir, "/", fname); 1517 fd = open(path, O_RDONLY); 1518 if (fd != -1) { 1519 fname = path; 1520 goto found; 1521 } 1522 } else { 1523 fd = open(fname, O_RDONLY); 1524 if (fd != -1) 1525 goto found; 1526 } 1527 /* look in -I and system include directories. */ 1528 name = Dir_FindFile(fname, parseIncPath); 1529 if (!name) 1530 name = Dir_FindFile(fname, 1531 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1532 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1533 free(name); 1534 free(path); 1535 return -1; 1536 } 1537 fname = name; 1538 /* 1539 * set the MAKEFILE variable desired by System V fans -- the 1540 * placement of the setting here means it gets set to the last 1541 * makefile specified, as it is set by SysV make. 1542 */ 1543 found: 1544 if (!doing_depend) 1545 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1546 Parse_File(fname, fd); 1547 } 1548 free(path); 1549 return 0; 1550 } 1551 1552 1553 1554 /*- 1555 * Cmd_Exec -- 1556 * Execute the command in cmd, and return the output of that command 1557 * in a string. In the output, newlines are replaced with spaces. 1558 * 1559 * Results: 1560 * A string containing the output of the command, or the empty string. 1561 * *errfmt returns a format string describing the command failure, 1562 * if any, using a single %s conversion specification. 1563 * 1564 * Side Effects: 1565 * The string must be freed by the caller. 1566 */ 1567 char * 1568 Cmd_Exec(const char *cmd, const char **errfmt) 1569 { 1570 const char *args[4]; /* Args for invoking the shell */ 1571 int fds[2]; /* Pipe streams */ 1572 int cpid; /* Child PID */ 1573 int pid; /* PID from wait() */ 1574 int status; /* command exit status */ 1575 Buffer buf; /* buffer to store the result */ 1576 ssize_t bytes_read; 1577 char *res; /* result */ 1578 size_t res_len; 1579 char *cp; 1580 int savederr; /* saved errno */ 1581 1582 *errfmt = NULL; 1583 1584 if (!shellName) 1585 Shell_Init(); 1586 /* 1587 * Set up arguments for shell 1588 */ 1589 args[0] = shellName; 1590 args[1] = "-c"; 1591 args[2] = cmd; 1592 args[3] = NULL; 1593 1594 /* 1595 * Open a pipe for fetching its output 1596 */ 1597 if (pipe(fds) == -1) { 1598 *errfmt = "Couldn't create pipe for \"%s\""; 1599 goto bad; 1600 } 1601 1602 /* 1603 * Fork 1604 */ 1605 switch (cpid = vFork()) { 1606 case 0: 1607 /* 1608 * Close input side of pipe 1609 */ 1610 (void)close(fds[0]); 1611 1612 /* 1613 * Duplicate the output stream to the shell's output, then 1614 * shut the extra thing down. Note we don't fetch the error 1615 * stream...why not? Why? 1616 */ 1617 (void)dup2(fds[1], 1); 1618 (void)close(fds[1]); 1619 1620 Var_ExportVars(); 1621 1622 (void)execv(shellPath, UNCONST(args)); 1623 _exit(1); 1624 /*NOTREACHED*/ 1625 1626 case -1: 1627 *errfmt = "Couldn't exec \"%s\""; 1628 goto bad; 1629 1630 default: 1631 /* 1632 * No need for the writing half 1633 */ 1634 (void)close(fds[1]); 1635 1636 savederr = 0; 1637 Buf_Init(&buf, 0); 1638 1639 do { 1640 char result[BUFSIZ]; 1641 bytes_read = read(fds[0], result, sizeof(result)); 1642 if (bytes_read > 0) 1643 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1644 } 1645 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1646 if (bytes_read == -1) 1647 savederr = errno; 1648 1649 /* 1650 * Close the input side of the pipe. 1651 */ 1652 (void)close(fds[0]); 1653 1654 /* 1655 * Wait for the process to exit. 1656 */ 1657 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1658 JobReapChild(pid, status, FALSE); 1659 continue; 1660 } 1661 res_len = Buf_Size(&buf); 1662 res = Buf_Destroy(&buf, FALSE); 1663 1664 if (savederr != 0) 1665 *errfmt = "Couldn't read shell's output for \"%s\""; 1666 1667 if (WIFSIGNALED(status)) 1668 *errfmt = "\"%s\" exited on a signal"; 1669 else if (WEXITSTATUS(status) != 0) 1670 *errfmt = "\"%s\" returned non-zero status"; 1671 1672 /* Convert newlines to spaces. A final newline is just stripped */ 1673 if (res_len > 0 && res[res_len - 1] == '\n') 1674 res[res_len - 1] = '\0'; 1675 for (cp = res; *cp != '\0'; cp++) 1676 if (*cp == '\n') 1677 *cp = ' '; 1678 break; 1679 } 1680 return res; 1681 bad: 1682 return bmake_strdup(""); 1683 } 1684 1685 /*- 1686 * Error -- 1687 * Print an error message given its format. 1688 * 1689 * Results: 1690 * None. 1691 * 1692 * Side Effects: 1693 * The message is printed. 1694 */ 1695 void 1696 Error(const char *fmt, ...) 1697 { 1698 va_list ap; 1699 FILE *err_file; 1700 1701 err_file = debug_file; 1702 if (err_file == stdout) 1703 err_file = stderr; 1704 (void)fflush(stdout); 1705 for (;;) { 1706 va_start(ap, fmt); 1707 fprintf(err_file, "%s: ", progname); 1708 (void)vfprintf(err_file, fmt, ap); 1709 va_end(ap); 1710 (void)fprintf(err_file, "\n"); 1711 (void)fflush(err_file); 1712 if (err_file == stderr) 1713 break; 1714 err_file = stderr; 1715 } 1716 } 1717 1718 /* Produce a Fatal error message, then exit immediately. 1719 * 1720 * If jobs are running, waits for them to finish. */ 1721 void 1722 Fatal(const char *fmt, ...) 1723 { 1724 va_list ap; 1725 1726 va_start(ap, fmt); 1727 if (jobsRunning) 1728 Job_Wait(); 1729 1730 (void)fflush(stdout); 1731 (void)vfprintf(stderr, fmt, ap); 1732 va_end(ap); 1733 (void)fprintf(stderr, "\n"); 1734 (void)fflush(stderr); 1735 1736 PrintOnError(NULL, NULL); 1737 1738 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1739 Targ_PrintGraph(2); 1740 Trace_Log(MAKEERROR, 0); 1741 exit(2); /* Not 1 so -q can distinguish error */ 1742 } 1743 1744 /* 1745 * Punt -- 1746 * Major exception once jobs are being created. Kills all jobs, prints 1747 * a message and exits. 1748 * 1749 * Results: 1750 * None 1751 * 1752 * Side Effects: 1753 * All children are killed indiscriminately and the program Lib_Exits 1754 */ 1755 void 1756 Punt(const char *fmt, ...) 1757 { 1758 va_list ap; 1759 1760 va_start(ap, fmt); 1761 (void)fflush(stdout); 1762 (void)fprintf(stderr, "%s: ", progname); 1763 (void)vfprintf(stderr, fmt, ap); 1764 va_end(ap); 1765 (void)fprintf(stderr, "\n"); 1766 (void)fflush(stderr); 1767 1768 PrintOnError(NULL, NULL); 1769 1770 DieHorribly(); 1771 } 1772 1773 /*- 1774 * DieHorribly -- 1775 * Exit without giving a message. 1776 * 1777 * Results: 1778 * None 1779 * 1780 * Side Effects: 1781 * A big one... 1782 */ 1783 void 1784 DieHorribly(void) 1785 { 1786 if (jobsRunning) 1787 Job_AbortAll(); 1788 if (DEBUG(GRAPH2)) 1789 Targ_PrintGraph(2); 1790 Trace_Log(MAKEERROR, 0); 1791 exit(2); /* Not 1, so -q can distinguish error */ 1792 } 1793 1794 /* 1795 * Finish -- 1796 * Called when aborting due to errors in child shell to signal 1797 * abnormal exit. 1798 * 1799 * Results: 1800 * None 1801 * 1802 * Side Effects: 1803 * The program exits 1804 */ 1805 void 1806 Finish(int errors) 1807 /* number of errors encountered in Make_Make */ 1808 { 1809 if (dieQuietly(NULL, -1)) 1810 exit(2); 1811 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1812 } 1813 1814 /* 1815 * eunlink -- 1816 * Remove a file carefully, avoiding directories. 1817 */ 1818 int 1819 eunlink(const char *file) 1820 { 1821 struct stat st; 1822 1823 if (lstat(file, &st) == -1) 1824 return -1; 1825 1826 if (S_ISDIR(st.st_mode)) { 1827 errno = EISDIR; 1828 return -1; 1829 } 1830 return unlink(file); 1831 } 1832 1833 /* 1834 * execError -- 1835 * Print why exec failed, avoiding stdio. 1836 */ 1837 void 1838 execError(const char *af, const char *av) 1839 { 1840 #ifdef USE_IOVEC 1841 int i = 0; 1842 struct iovec iov[8]; 1843 #define IOADD(s) \ 1844 (void)(iov[i].iov_base = UNCONST(s), \ 1845 iov[i].iov_len = strlen(iov[i].iov_base), \ 1846 i++) 1847 #else 1848 #define IOADD(void)write(2, s, strlen(s)) 1849 #endif 1850 1851 IOADD(progname); 1852 IOADD(": "); 1853 IOADD(af); 1854 IOADD("("); 1855 IOADD(av); 1856 IOADD(") failed ("); 1857 IOADD(strerror(errno)); 1858 IOADD(")\n"); 1859 1860 #ifdef USE_IOVEC 1861 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1862 continue; 1863 #endif 1864 } 1865 1866 /* 1867 * usage -- 1868 * exit with usage message 1869 */ 1870 static void 1871 usage(void) 1872 { 1873 char *p; 1874 if ((p = strchr(progname, '[')) != NULL) 1875 *p = '\0'; 1876 1877 (void)fprintf(stderr, 1878 "usage: %s [-BeikNnqrstWwX] \n" 1879 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1880 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1881 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1882 progname); 1883 exit(2); 1884 } 1885 1886 /* 1887 * realpath(3) can get expensive, cache results... 1888 */ 1889 static GNode *cached_realpaths = NULL; 1890 1891 static GNode * 1892 get_cached_realpaths(void) 1893 { 1894 1895 if (!cached_realpaths) { 1896 cached_realpaths = Targ_NewGN("Realpath"); 1897 #ifndef DEBUG_REALPATH_CACHE 1898 cached_realpaths->flags = INTERNAL; 1899 #endif 1900 } 1901 1902 return cached_realpaths; 1903 } 1904 1905 /* purge any relative paths */ 1906 static void 1907 purge_cached_realpaths(void) 1908 { 1909 GNode *cache = get_cached_realpaths(); 1910 Hash_Entry *he, *nhe; 1911 Hash_Search hs; 1912 1913 he = Hash_EnumFirst(&cache->context, &hs); 1914 while (he) { 1915 nhe = Hash_EnumNext(&hs); 1916 if (he->name[0] != '/') { 1917 if (DEBUG(DIR)) 1918 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1919 Hash_DeleteEntry(&cache->context, he); 1920 } 1921 he = nhe; 1922 } 1923 } 1924 1925 char * 1926 cached_realpath(const char *pathname, char *resolved) 1927 { 1928 GNode *cache; 1929 const char *rp; 1930 char *cp; 1931 1932 if (!pathname || !pathname[0]) 1933 return NULL; 1934 1935 cache = get_cached_realpaths(); 1936 1937 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1938 /* a hit */ 1939 strncpy(resolved, rp, MAXPATHLEN); 1940 resolved[MAXPATHLEN - 1] = '\0'; 1941 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1942 Var_Set(pathname, rp, cache); 1943 } /* else should we negative-cache? */ 1944 1945 bmake_free(cp); 1946 return rp ? resolved : NULL; 1947 } 1948 1949 1950 static int 1951 addErrorCMD(void *cmdp, void *gnp) 1952 { 1953 if (cmdp == NULL) 1954 return 1; /* stop */ 1955 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1956 return 0; 1957 } 1958 1959 /* 1960 * Return true if we should die without noise. 1961 * For example our failing child was a sub-make 1962 * or failure happend elsewhere. 1963 */ 1964 int 1965 dieQuietly(GNode *gn, int bf) 1966 { 1967 static int quietly = -1; 1968 1969 if (quietly < 0) { 1970 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 1971 quietly = 0; 1972 else if (bf >= 0) 1973 quietly = bf; 1974 else 1975 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 1976 } 1977 return quietly; 1978 } 1979 1980 void 1981 PrintOnError(GNode *gn, const char *s) 1982 { 1983 static GNode *en = NULL; 1984 const char *expr; 1985 char *cp; 1986 1987 if (DEBUG(HASH)) { 1988 Targ_Stats(); 1989 Var_Stats(); 1990 } 1991 1992 /* we generally want to keep quiet if a sub-make died */ 1993 if (dieQuietly(gn, -1)) 1994 return; 1995 1996 if (s) 1997 printf("%s", s); 1998 1999 printf("\n%s: stopped in %s\n", progname, curdir); 2000 2001 if (en) 2002 return; /* we've been here! */ 2003 if (gn) { 2004 /* 2005 * We can print this even if there is no .ERROR target. 2006 */ 2007 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2008 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2009 Lst_ForEach(gn->commands, addErrorCMD, gn); 2010 } 2011 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2012 cp = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2013 printf("%s", cp); 2014 free(cp); 2015 fflush(stdout); 2016 2017 /* 2018 * Finally, see if there is a .ERROR target, and run it if so. 2019 */ 2020 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2021 if (en) { 2022 en->type |= OP_SPECIAL; 2023 Compat_Make(en, en); 2024 } 2025 } 2026 2027 void 2028 Main_ExportMAKEFLAGS(Boolean first) 2029 { 2030 static Boolean once = TRUE; 2031 const char *expr; 2032 char *s; 2033 2034 if (once != first) 2035 return; 2036 once = FALSE; 2037 2038 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2039 s = Var_Subst(expr, VAR_CMD, VARE_WANTRES); 2040 if (s[0] != '\0') { 2041 #ifdef POSIX 2042 setenv("MAKEFLAGS", s, 1); 2043 #else 2044 setenv("MAKE", s, 1); 2045 #endif 2046 } 2047 } 2048 2049 char * 2050 getTmpdir(void) 2051 { 2052 static char *tmpdir = NULL; 2053 2054 if (!tmpdir) { 2055 struct stat st; 2056 2057 /* 2058 * Honor $TMPDIR but only if it is valid. 2059 * Ensure it ends with /. 2060 */ 2061 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2062 VARE_WANTRES); 2063 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2064 free(tmpdir); 2065 tmpdir = bmake_strdup(_PATH_TMP); 2066 } 2067 } 2068 return tmpdir; 2069 } 2070 2071 /* 2072 * Create and open a temp file using "pattern". 2073 * If "fnamep" is provided set it to a copy of the filename created. 2074 * Otherwise unlink the file once open. 2075 */ 2076 int 2077 mkTempFile(const char *pattern, char **fnamep) 2078 { 2079 static char *tmpdir = NULL; 2080 char tfile[MAXPATHLEN]; 2081 int fd; 2082 2083 if (!pattern) 2084 pattern = TMPPAT; 2085 if (!tmpdir) 2086 tmpdir = getTmpdir(); 2087 if (pattern[0] == '/') { 2088 snprintf(tfile, sizeof(tfile), "%s", pattern); 2089 } else { 2090 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2091 } 2092 if ((fd = mkstemp(tfile)) < 0) 2093 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2094 if (fnamep) { 2095 *fnamep = bmake_strdup(tfile); 2096 } else { 2097 unlink(tfile); /* we just want the descriptor */ 2098 } 2099 return fd; 2100 } 2101 2102 /* 2103 * Convert a string representation of a boolean. 2104 * Anything that looks like "No", "False", "Off", "0" etc, 2105 * is FALSE, otherwise TRUE. 2106 */ 2107 Boolean 2108 s2Boolean(const char *s, Boolean bf) 2109 { 2110 if (s) { 2111 switch(*s) { 2112 case '\0': /* not set - the default wins */ 2113 break; 2114 case '0': 2115 case 'F': 2116 case 'f': 2117 case 'N': 2118 case 'n': 2119 bf = FALSE; 2120 break; 2121 case 'O': 2122 case 'o': 2123 switch (s[1]) { 2124 case 'F': 2125 case 'f': 2126 bf = FALSE; 2127 break; 2128 default: 2129 bf = TRUE; 2130 break; 2131 } 2132 break; 2133 default: 2134 bf = TRUE; 2135 break; 2136 } 2137 } 2138 return bf; 2139 } 2140 2141 /* 2142 * Return a Boolean based on setting of a knob. 2143 * 2144 * If the knob is not set, the supplied default is the return value. 2145 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2146 * is FALSE, otherwise TRUE. 2147 */ 2148 Boolean 2149 getBoolean(const char *name, Boolean fallback) 2150 { 2151 char *expr = str_concat3("${", name, ":U:tl}"); 2152 char *value = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2153 Boolean res = s2Boolean(value, fallback); 2154 free(value); 2155 free(expr); 2156 return res; 2157 } 2158
Indexes created Mon Sep 22 13:09:51 GMT 2025