main.c revision 1.340
1 /* $NetBSD: main.c,v 1.340 2020/09/22 19:51:19 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 1.340 2020/09/22 19:51:19 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 *expr = str_concat3("${", var, "}"); 871 value = p1 = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 872 free(expr); 873 } else { 874 value = Var_Value(var, VAR_GLOBAL, &p1); 875 } 876 printf("%s\n", value ? value : ""); 877 bmake_free(p1); 878 } 879 } 880 881 static Boolean 882 runTargets(void) 883 { 884 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 885 Boolean outOfDate; /* FALSE if all targets up to date */ 886 887 /* 888 * Have now read the entire graph and need to make a list of 889 * targets to create. If none was given on the command line, 890 * we consult the parsing module to find the main target(s) 891 * to create. 892 */ 893 if (Lst_IsEmpty(create)) 894 targs = Parse_MainName(); 895 else 896 targs = Targ_FindList(create, TARG_CREATE); 897 898 if (!compatMake) { 899 /* 900 * Initialize job module before traversing the graph 901 * now that any .BEGIN and .END targets have been read. 902 * This is done only if the -q flag wasn't given 903 * (to prevent the .BEGIN from being executed should 904 * it exist). 905 */ 906 if (!queryFlag) { 907 Job_Init(); 908 jobsRunning = TRUE; 909 } 910 911 /* Traverse the graph, checking on all the targets */ 912 outOfDate = Make_Run(targs); 913 } else { 914 /* 915 * Compat_Init will take care of creating all the 916 * targets as well as initializing the module. 917 */ 918 Compat_Run(targs); 919 outOfDate = FALSE; 920 } 921 Lst_Free(targs); 922 return outOfDate; 923 } 924 925 /*- 926 * main -- 927 * The main function, for obvious reasons. Initializes variables 928 * and a few modules, then parses the arguments give it in the 929 * environment and on the command line. Reads the system makefile 930 * followed by either Makefile, makefile or the file given by the 931 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 932 * flags it has received by then uses either the Make or the Compat 933 * module to create the initial list of targets. 934 * 935 * Results: 936 * If -q was given, exits -1 if anything was out-of-date. Else it exits 937 * 0. 938 * 939 * Side Effects: 940 * The program exits when done. Targets are created. etc. etc. etc. 941 */ 942 int 943 main(int argc, char **argv) 944 { 945 Boolean outOfDate; /* FALSE if all targets up to date */ 946 struct stat sb, sa; 947 char *p1, *path; 948 char mdpath[MAXPATHLEN]; 949 const char *machine = getenv("MACHINE"); 950 const char *machine_arch = getenv("MACHINE_ARCH"); 951 char *syspath = getenv("MAKESYSPATH"); 952 StringList *sysMkPath; /* Path of sys.mk */ 953 char *cp = NULL, *start; 954 /* avoid faults on read-only strings */ 955 static char defsyspath[] = _PATH_DEFSYSPATH; 956 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 957 struct timeval rightnow; /* to initialize random seed */ 958 struct utsname utsname; 959 960 /* default to writing debug to stderr */ 961 debug_file = stderr; 962 963 #ifdef SIGINFO 964 (void)bmake_signal(SIGINFO, siginfo); 965 #endif 966 /* 967 * Set the seed to produce a different random sequence 968 * on each program execution. 969 */ 970 gettimeofday(&rightnow, NULL); 971 srandom(rightnow.tv_sec + rightnow.tv_usec); 972 973 if ((progname = strrchr(argv[0], '/')) != NULL) 974 progname++; 975 else 976 progname = argv[0]; 977 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 978 /* 979 * get rid of resource limit on file descriptors 980 */ 981 { 982 struct rlimit rl; 983 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 984 rl.rlim_cur != rl.rlim_max) { 985 rl.rlim_cur = rl.rlim_max; 986 (void)setrlimit(RLIMIT_NOFILE, &rl); 987 } 988 } 989 #endif 990 991 if (uname(&utsname) == -1) { 992 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 993 strerror(errno)); 994 exit(2); 995 } 996 997 /* 998 * Get the name of this type of MACHINE from utsname 999 * so we can share an executable for similar machines. 1000 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1001 * 1002 * Note that both MACHINE and MACHINE_ARCH are decided at 1003 * run-time. 1004 */ 1005 if (!machine) { 1006 #ifdef MAKE_NATIVE 1007 machine = utsname.machine; 1008 #else 1009 #ifdef MAKE_MACHINE 1010 machine = MAKE_MACHINE; 1011 #else 1012 machine = "unknown"; 1013 #endif 1014 #endif 1015 } 1016 1017 if (!machine_arch) { 1018 #ifdef MAKE_NATIVE 1019 static char machine_arch_buf[sizeof(utsname.machine)]; 1020 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1021 size_t len = sizeof(machine_arch_buf); 1022 1023 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1024 &len, NULL, 0) < 0) { 1025 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1026 strerror(errno)); 1027 exit(2); 1028 } 1029 1030 machine_arch = machine_arch_buf; 1031 #else 1032 #ifndef MACHINE_ARCH 1033 #ifdef MAKE_MACHINE_ARCH 1034 machine_arch = MAKE_MACHINE_ARCH; 1035 #else 1036 machine_arch = "unknown"; 1037 #endif 1038 #else 1039 machine_arch = MACHINE_ARCH; 1040 #endif 1041 #endif 1042 } 1043 1044 myPid = getpid(); /* remember this for vFork() */ 1045 1046 /* 1047 * Just in case MAKEOBJDIR wants us to do something tricky. 1048 */ 1049 Var_Init(); /* Initialize the lists of variables for 1050 * parsing arguments */ 1051 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1052 Var_Set("MACHINE", machine, VAR_GLOBAL); 1053 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1054 #ifdef MAKE_VERSION 1055 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1056 #endif 1057 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1058 /* 1059 * This is the traditional preference for makefiles. 1060 */ 1061 #ifndef MAKEFILE_PREFERENCE_LIST 1062 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1063 #endif 1064 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1065 VAR_GLOBAL); 1066 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1067 1068 create = Lst_Init(); 1069 makefiles = Lst_Init(); 1070 printVars = 0; 1071 debugVflag = FALSE; 1072 variables = Lst_Init(); 1073 beSilent = FALSE; /* Print commands as executed */ 1074 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1075 noExecute = FALSE; /* Execute all commands */ 1076 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1077 keepgoing = FALSE; /* Stop on error */ 1078 allPrecious = FALSE; /* Remove targets when interrupted */ 1079 deleteOnError = FALSE; /* Historical default behavior */ 1080 queryFlag = FALSE; /* This is not just a check-run */ 1081 noBuiltins = FALSE; /* Read the built-in rules */ 1082 touchFlag = FALSE; /* Actually update targets */ 1083 debug = 0; /* No debug verbosity, please. */ 1084 jobsRunning = FALSE; 1085 1086 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1087 maxJobTokens = maxJobs; 1088 compatMake = FALSE; /* No compat mode */ 1089 ignorePWD = FALSE; 1090 1091 /* 1092 * Initialize the parsing, directory and variable modules to prepare 1093 * for the reading of inclusion paths and variable settings on the 1094 * command line 1095 */ 1096 1097 /* 1098 * Initialize various variables. 1099 * MAKE also gets this name, for compatibility 1100 * .MAKEFLAGS gets set to the empty string just in case. 1101 * MFLAGS also gets initialized empty, for compatibility. 1102 */ 1103 Parse_Init(); 1104 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1105 /* 1106 * Leave alone if it is an absolute path, or if it does 1107 * not contain a '/' in which case we need to find it in 1108 * the path, like execvp(3) and the shells do. 1109 */ 1110 p1 = argv[0]; 1111 } else { 1112 /* 1113 * A relative path, canonicalize it. 1114 */ 1115 p1 = cached_realpath(argv[0], mdpath); 1116 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1117 p1 = argv[0]; /* realpath failed */ 1118 } 1119 } 1120 Var_Set("MAKE", p1, VAR_GLOBAL); 1121 Var_Set(".MAKE", p1, VAR_GLOBAL); 1122 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1123 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1124 Var_Set("MFLAGS", "", VAR_GLOBAL); 1125 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1126 /* some makefiles need to know this */ 1127 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1128 1129 /* 1130 * Set some other useful macros 1131 */ 1132 { 1133 char tmp[64], *ep; 1134 1135 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1136 if (makelevel < 0) 1137 makelevel = 0; 1138 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1139 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1140 snprintf(tmp, sizeof(tmp), "%u", myPid); 1141 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1142 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1143 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1144 } 1145 if (makelevel > 0) { 1146 char pn[1024]; 1147 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1148 progname = bmake_strdup(pn); 1149 } 1150 1151 #ifdef USE_META 1152 meta_init(); 1153 #endif 1154 Dir_Init(); 1155 1156 /* 1157 * First snag any flags out of the MAKE environment variable. 1158 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1159 * in a different format). 1160 */ 1161 #ifdef POSIX 1162 p1 = explode(getenv("MAKEFLAGS")); 1163 Main_ParseArgLine(p1); 1164 free(p1); 1165 #else 1166 Main_ParseArgLine(getenv("MAKE")); 1167 #endif 1168 1169 /* 1170 * Find where we are (now). 1171 * We take care of PWD for the automounter below... 1172 */ 1173 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1174 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1175 progname, strerror(errno)); 1176 exit(2); 1177 } 1178 1179 MainParseArgs(argc, argv); 1180 1181 if (enterFlag) 1182 printf("%s: Entering directory `%s'\n", progname, curdir); 1183 1184 /* 1185 * Verify that cwd is sane. 1186 */ 1187 if (stat(curdir, &sa) == -1) { 1188 (void)fprintf(stderr, "%s: %s: %s.\n", 1189 progname, curdir, strerror(errno)); 1190 exit(2); 1191 } 1192 1193 /* 1194 * All this code is so that we know where we are when we start up 1195 * on a different machine with pmake. 1196 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1197 * since the value of curdir can vary depending on how we got 1198 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1199 * or via subdir.mk in which case its likely a shell which does 1200 * not provide it. 1201 * So, to stop it breaking this case only, we ignore PWD if 1202 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1203 */ 1204 #ifndef NO_PWD_OVERRIDE 1205 if (!ignorePWD) { 1206 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1207 1208 if ((pwd = getenv("PWD")) != NULL && 1209 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1210 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1211 VAR_CMD, &ptmp2); 1212 1213 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1214 if (stat(pwd, &sb) == 0 && 1215 sa.st_ino == sb.st_ino && 1216 sa.st_dev == sb.st_dev) 1217 (void)strncpy(curdir, pwd, MAXPATHLEN); 1218 } 1219 } 1220 bmake_free(ptmp1); 1221 bmake_free(ptmp2); 1222 } 1223 #endif 1224 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1225 1226 /* 1227 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1228 * MAKEOBJDIR is set in the environment, try only that value 1229 * and fall back to .CURDIR if it does not exist. 1230 * 1231 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1232 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1233 * of these paths exist, just use .CURDIR. 1234 */ 1235 Dir_InitDir(curdir); 1236 (void)Main_SetObjdir("%s", curdir); 1237 1238 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1239 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1240 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1241 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1242 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1243 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1244 1245 /* 1246 * Initialize archive, target and suffix modules in preparation for 1247 * parsing the makefile(s) 1248 */ 1249 Arch_Init(); 1250 Targ_Init(); 1251 Suff_Init(); 1252 Trace_Init(tracefile); 1253 1254 DEFAULT = NULL; 1255 (void)time(&now); 1256 1257 Trace_Log(MAKESTART, NULL); 1258 1259 /* 1260 * Set up the .TARGETS variable to contain the list of targets to be 1261 * created. If none specified, make the variable empty -- the parser 1262 * will fill the thing in with the default or .MAIN target. 1263 */ 1264 if (!Lst_IsEmpty(create)) { 1265 StringListNode *ln; 1266 1267 for (ln = Lst_First(create); ln != NULL; ln = LstNode_Next(ln)) { 1268 char *name = LstNode_Datum(ln); 1269 Var_Append(".TARGETS", name, VAR_GLOBAL); 1270 } 1271 } else 1272 Var_Set(".TARGETS", "", VAR_GLOBAL); 1273 1274 1275 /* 1276 * If no user-supplied system path was given (through the -m option) 1277 * add the directories from the DEFSYSPATH (more than one may be given 1278 * as dir1:...:dirn) to the system include path. 1279 */ 1280 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1281 if (syspath == NULL || syspath[0] == '\0') 1282 syspath = defsyspath; 1283 else 1284 syspath = bmake_strdup(syspath); 1285 1286 for (start = syspath; *start != '\0'; start = cp) { 1287 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1288 continue; 1289 if (*cp == ':') { 1290 *cp++ = '\0'; 1291 } 1292 /* look for magic parent directory search string */ 1293 if (strncmp(".../", start, 4) != 0) { 1294 (void)Dir_AddDir(defIncPath, start); 1295 } else { 1296 if (Dir_FindHereOrAbove(curdir, start+4, 1297 found_path, sizeof(found_path))) { 1298 (void)Dir_AddDir(defIncPath, found_path); 1299 } 1300 } 1301 } 1302 if (syspath != defsyspath) 1303 free(syspath); 1304 1305 /* 1306 * Read in the built-in rules first, followed by the specified 1307 * makefiles, or the default makefile and Makefile, in that order, 1308 * if no makefiles were given on the command line. 1309 */ 1310 if (!noBuiltins) { 1311 StringListNode *ln; 1312 1313 sysMkPath = Lst_Init(); 1314 Dir_Expand(_PATH_DEFSYSMK, 1315 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1316 sysMkPath); 1317 if (Lst_IsEmpty(sysMkPath)) 1318 Fatal("%s: no system rules (%s).", progname, 1319 _PATH_DEFSYSMK); 1320 ln = Lst_Find(sysMkPath, ReadMakefileSucceeded, NULL); 1321 if (ln == NULL) 1322 Fatal("%s: cannot open %s.", progname, 1323 (char *)LstNode_Datum(Lst_First(sysMkPath))); 1324 } 1325 1326 if (!Lst_IsEmpty(makefiles)) { 1327 StringListNode *ln; 1328 1329 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1330 if (ln != NULL) 1331 Fatal("%s: cannot open %s.", progname, 1332 (char *)LstNode_Datum(ln)); 1333 } else { 1334 p1 = Var_Subst("${" MAKEFILE_PREFERENCE "}", 1335 VAR_CMD, VARE_WANTRES); 1336 (void)str2Lst_Append(makefiles, p1, NULL); 1337 (void)Lst_Find(makefiles, ReadMakefileSucceeded, NULL); 1338 free(p1); 1339 } 1340 1341 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1342 if (!noBuiltins || !printVars) { 1343 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE:T}", 1344 VAR_CMD, VARE_WANTRES); 1345 doing_depend = TRUE; 1346 (void)ReadMakefile(makeDependfile); 1347 doing_depend = FALSE; 1348 } 1349 1350 if (enterFlagObj) 1351 printf("%s: Entering directory `%s'\n", progname, objdir); 1352 1353 MakeMode(NULL); 1354 1355 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1356 bmake_free(p1); 1357 1358 if (!forceJobs && !compatMake && 1359 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1360 char *value; 1361 int n; 1362 1363 value = Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES); 1364 n = strtol(value, NULL, 0); 1365 if (n < 1) { 1366 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1367 progname); 1368 exit(1); 1369 } 1370 if (n != maxJobs) { 1371 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1372 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1373 } 1374 maxJobs = n; 1375 maxJobTokens = maxJobs; 1376 forceJobs = TRUE; 1377 free(value); 1378 } 1379 1380 /* 1381 * Be compatible if user did not specify -j and did not explicitly 1382 * turned compatibility on 1383 */ 1384 if (!compatMake && !forceJobs) { 1385 compatMake = TRUE; 1386 } 1387 1388 if (!compatMake) 1389 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1390 if (DEBUG(JOB)) 1391 fprintf(debug_file, 1392 "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1393 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1394 1395 if (!printVars) 1396 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1397 1398 1399 /* 1400 * For compatibility, look at the directories in the VPATH variable 1401 * and add them to the search path, if the variable is defined. The 1402 * variable's value is in the same format as the PATH envariable, i.e. 1403 * <directory>:<directory>:<directory>... 1404 */ 1405 if (Var_Exists("VPATH", VAR_CMD)) { 1406 char *vpath, savec; 1407 /* 1408 * GCC stores string constants in read-only memory, but 1409 * Var_Subst will want to write this thing, so store it 1410 * in an array 1411 */ 1412 static char VPATH[] = "${VPATH}"; 1413 1414 vpath = Var_Subst(VPATH, VAR_CMD, VARE_WANTRES); 1415 path = vpath; 1416 do { 1417 /* skip to end of directory */ 1418 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1419 continue; 1420 /* Save terminator character so know when to stop */ 1421 savec = *cp; 1422 *cp = '\0'; 1423 /* Add directory to search path */ 1424 (void)Dir_AddDir(dirSearchPath, path); 1425 *cp = savec; 1426 path = cp + 1; 1427 } while (savec == ':'); 1428 free(vpath); 1429 } 1430 1431 /* 1432 * Now that all search paths have been read for suffixes et al, it's 1433 * time to add the default search path to their lists... 1434 */ 1435 Suff_DoPaths(); 1436 1437 /* 1438 * Propagate attributes through :: dependency lists. 1439 */ 1440 Targ_Propagate(); 1441 1442 /* print the initial graph, if the user requested it */ 1443 if (DEBUG(GRAPH1)) 1444 Targ_PrintGraph(1); 1445 1446 /* print the values of any variables requested by the user */ 1447 if (printVars) { 1448 doPrintVars(); 1449 outOfDate = FALSE; 1450 } else { 1451 outOfDate = runTargets(); 1452 } 1453 1454 #ifdef CLEANUP 1455 Lst_Free(variables); 1456 Lst_Free(makefiles); 1457 Lst_Destroy(create, free); 1458 #endif 1459 1460 /* print the graph now it's been processed if the user requested it */ 1461 if (DEBUG(GRAPH2)) 1462 Targ_PrintGraph(2); 1463 1464 Trace_Log(MAKEEND, 0); 1465 1466 if (enterFlagObj) 1467 printf("%s: Leaving directory `%s'\n", progname, objdir); 1468 if (enterFlag) 1469 printf("%s: Leaving directory `%s'\n", progname, curdir); 1470 1471 #ifdef USE_META 1472 meta_finish(); 1473 #endif 1474 Suff_End(); 1475 Targ_End(); 1476 Arch_End(); 1477 Var_End(); 1478 Parse_End(); 1479 Dir_End(); 1480 Job_End(); 1481 Trace_End(); 1482 1483 return outOfDate ? 1 : 0; 1484 } 1485 1486 /* Open and parse the given makefile, with all its side effects. 1487 * 1488 * Results: 1489 * 0 if ok. -1 if couldn't open file. 1490 */ 1491 static int 1492 ReadMakefile(const char *fname) 1493 { 1494 int fd; 1495 char *name, *path = NULL; 1496 1497 if (!strcmp(fname, "-")) { 1498 Parse_File(NULL /*stdin*/, -1); 1499 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1500 } else { 1501 /* if we've chdir'd, rebuild the path name */ 1502 if (strcmp(curdir, objdir) && *fname != '/') { 1503 path = str_concat3(curdir, "/", fname); 1504 fd = open(path, O_RDONLY); 1505 if (fd != -1) { 1506 fname = path; 1507 goto found; 1508 } 1509 free(path); 1510 1511 /* If curdir failed, try objdir (ala .depend) */ 1512 path = str_concat3(objdir, "/", fname); 1513 fd = open(path, O_RDONLY); 1514 if (fd != -1) { 1515 fname = path; 1516 goto found; 1517 } 1518 } else { 1519 fd = open(fname, O_RDONLY); 1520 if (fd != -1) 1521 goto found; 1522 } 1523 /* look in -I and system include directories. */ 1524 name = Dir_FindFile(fname, parseIncPath); 1525 if (!name) 1526 name = Dir_FindFile(fname, 1527 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1528 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1529 free(name); 1530 free(path); 1531 return -1; 1532 } 1533 fname = name; 1534 /* 1535 * set the MAKEFILE variable desired by System V fans -- the 1536 * placement of the setting here means it gets set to the last 1537 * makefile specified, as it is set by SysV make. 1538 */ 1539 found: 1540 if (!doing_depend) 1541 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1542 Parse_File(fname, fd); 1543 } 1544 free(path); 1545 return 0; 1546 } 1547 1548 1549 1550 /*- 1551 * Cmd_Exec -- 1552 * Execute the command in cmd, and return the output of that command 1553 * in a string. In the output, newlines are replaced with spaces. 1554 * 1555 * Results: 1556 * A string containing the output of the command, or the empty string. 1557 * *errfmt returns a format string describing the command failure, 1558 * if any, using a single %s conversion specification. 1559 * 1560 * Side Effects: 1561 * The string must be freed by the caller. 1562 */ 1563 char * 1564 Cmd_Exec(const char *cmd, const char **errfmt) 1565 { 1566 const char *args[4]; /* Args for invoking the shell */ 1567 int fds[2]; /* Pipe streams */ 1568 int cpid; /* Child PID */ 1569 int pid; /* PID from wait() */ 1570 int status; /* command exit status */ 1571 Buffer buf; /* buffer to store the result */ 1572 ssize_t bytes_read; 1573 char *res; /* result */ 1574 size_t res_len; 1575 char *cp; 1576 int savederr; /* saved errno */ 1577 1578 *errfmt = NULL; 1579 1580 if (!shellName) 1581 Shell_Init(); 1582 /* 1583 * Set up arguments for shell 1584 */ 1585 args[0] = shellName; 1586 args[1] = "-c"; 1587 args[2] = cmd; 1588 args[3] = NULL; 1589 1590 /* 1591 * Open a pipe for fetching its output 1592 */ 1593 if (pipe(fds) == -1) { 1594 *errfmt = "Couldn't create pipe for \"%s\""; 1595 goto bad; 1596 } 1597 1598 /* 1599 * Fork 1600 */ 1601 switch (cpid = vFork()) { 1602 case 0: 1603 /* 1604 * Close input side of pipe 1605 */ 1606 (void)close(fds[0]); 1607 1608 /* 1609 * Duplicate the output stream to the shell's output, then 1610 * shut the extra thing down. Note we don't fetch the error 1611 * stream...why not? Why? 1612 */ 1613 (void)dup2(fds[1], 1); 1614 (void)close(fds[1]); 1615 1616 Var_ExportVars(); 1617 1618 (void)execv(shellPath, UNCONST(args)); 1619 _exit(1); 1620 /*NOTREACHED*/ 1621 1622 case -1: 1623 *errfmt = "Couldn't exec \"%s\""; 1624 goto bad; 1625 1626 default: 1627 /* 1628 * No need for the writing half 1629 */ 1630 (void)close(fds[1]); 1631 1632 savederr = 0; 1633 Buf_Init(&buf, 0); 1634 1635 do { 1636 char result[BUFSIZ]; 1637 bytes_read = read(fds[0], result, sizeof(result)); 1638 if (bytes_read > 0) 1639 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1640 } 1641 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1642 if (bytes_read == -1) 1643 savederr = errno; 1644 1645 /* 1646 * Close the input side of the pipe. 1647 */ 1648 (void)close(fds[0]); 1649 1650 /* 1651 * Wait for the process to exit. 1652 */ 1653 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1654 JobReapChild(pid, status, FALSE); 1655 continue; 1656 } 1657 res_len = Buf_Size(&buf); 1658 res = Buf_Destroy(&buf, FALSE); 1659 1660 if (savederr != 0) 1661 *errfmt = "Couldn't read shell's output for \"%s\""; 1662 1663 if (WIFSIGNALED(status)) 1664 *errfmt = "\"%s\" exited on a signal"; 1665 else if (WEXITSTATUS(status) != 0) 1666 *errfmt = "\"%s\" returned non-zero status"; 1667 1668 /* Convert newlines to spaces. A final newline is just stripped */ 1669 if (res_len > 0 && res[res_len - 1] == '\n') 1670 res[res_len - 1] = '\0'; 1671 for (cp = res; *cp != '\0'; cp++) 1672 if (*cp == '\n') 1673 *cp = ' '; 1674 break; 1675 } 1676 return res; 1677 bad: 1678 return bmake_strdup(""); 1679 } 1680 1681 /*- 1682 * Error -- 1683 * Print an error message given its format. 1684 * 1685 * Results: 1686 * None. 1687 * 1688 * Side Effects: 1689 * The message is printed. 1690 */ 1691 void 1692 Error(const char *fmt, ...) 1693 { 1694 va_list ap; 1695 FILE *err_file; 1696 1697 err_file = debug_file; 1698 if (err_file == stdout) 1699 err_file = stderr; 1700 (void)fflush(stdout); 1701 for (;;) { 1702 va_start(ap, fmt); 1703 fprintf(err_file, "%s: ", progname); 1704 (void)vfprintf(err_file, fmt, ap); 1705 va_end(ap); 1706 (void)fprintf(err_file, "\n"); 1707 (void)fflush(err_file); 1708 if (err_file == stderr) 1709 break; 1710 err_file = stderr; 1711 } 1712 } 1713 1714 /* Produce a Fatal error message, then exit immediately. 1715 * 1716 * If jobs are running, waits for them to finish. */ 1717 void 1718 Fatal(const char *fmt, ...) 1719 { 1720 va_list ap; 1721 1722 va_start(ap, fmt); 1723 if (jobsRunning) 1724 Job_Wait(); 1725 1726 (void)fflush(stdout); 1727 (void)vfprintf(stderr, fmt, ap); 1728 va_end(ap); 1729 (void)fprintf(stderr, "\n"); 1730 (void)fflush(stderr); 1731 1732 PrintOnError(NULL, NULL); 1733 1734 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1735 Targ_PrintGraph(2); 1736 Trace_Log(MAKEERROR, 0); 1737 exit(2); /* Not 1 so -q can distinguish error */ 1738 } 1739 1740 /* 1741 * Punt -- 1742 * Major exception once jobs are being created. Kills all jobs, prints 1743 * a message and exits. 1744 * 1745 * Results: 1746 * None 1747 * 1748 * Side Effects: 1749 * All children are killed indiscriminately and the program Lib_Exits 1750 */ 1751 void 1752 Punt(const char *fmt, ...) 1753 { 1754 va_list ap; 1755 1756 va_start(ap, fmt); 1757 (void)fflush(stdout); 1758 (void)fprintf(stderr, "%s: ", progname); 1759 (void)vfprintf(stderr, fmt, ap); 1760 va_end(ap); 1761 (void)fprintf(stderr, "\n"); 1762 (void)fflush(stderr); 1763 1764 PrintOnError(NULL, NULL); 1765 1766 DieHorribly(); 1767 } 1768 1769 /*- 1770 * DieHorribly -- 1771 * Exit without giving a message. 1772 * 1773 * Results: 1774 * None 1775 * 1776 * Side Effects: 1777 * A big one... 1778 */ 1779 void 1780 DieHorribly(void) 1781 { 1782 if (jobsRunning) 1783 Job_AbortAll(); 1784 if (DEBUG(GRAPH2)) 1785 Targ_PrintGraph(2); 1786 Trace_Log(MAKEERROR, 0); 1787 exit(2); /* Not 1, so -q can distinguish error */ 1788 } 1789 1790 /* 1791 * Finish -- 1792 * Called when aborting due to errors in child shell to signal 1793 * abnormal exit. 1794 * 1795 * Results: 1796 * None 1797 * 1798 * Side Effects: 1799 * The program exits 1800 */ 1801 void 1802 Finish(int errors) 1803 /* number of errors encountered in Make_Make */ 1804 { 1805 if (dieQuietly(NULL, -1)) 1806 exit(2); 1807 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1808 } 1809 1810 /* 1811 * eunlink -- 1812 * Remove a file carefully, avoiding directories. 1813 */ 1814 int 1815 eunlink(const char *file) 1816 { 1817 struct stat st; 1818 1819 if (lstat(file, &st) == -1) 1820 return -1; 1821 1822 if (S_ISDIR(st.st_mode)) { 1823 errno = EISDIR; 1824 return -1; 1825 } 1826 return unlink(file); 1827 } 1828 1829 /* 1830 * execError -- 1831 * Print why exec failed, avoiding stdio. 1832 */ 1833 void 1834 execError(const char *af, const char *av) 1835 { 1836 #ifdef USE_IOVEC 1837 int i = 0; 1838 struct iovec iov[8]; 1839 #define IOADD(s) \ 1840 (void)(iov[i].iov_base = UNCONST(s), \ 1841 iov[i].iov_len = strlen(iov[i].iov_base), \ 1842 i++) 1843 #else 1844 #define IOADD(void)write(2, s, strlen(s)) 1845 #endif 1846 1847 IOADD(progname); 1848 IOADD(": "); 1849 IOADD(af); 1850 IOADD("("); 1851 IOADD(av); 1852 IOADD(") failed ("); 1853 IOADD(strerror(errno)); 1854 IOADD(")\n"); 1855 1856 #ifdef USE_IOVEC 1857 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1858 continue; 1859 #endif 1860 } 1861 1862 /* 1863 * usage -- 1864 * exit with usage message 1865 */ 1866 static void 1867 usage(void) 1868 { 1869 char *p; 1870 if ((p = strchr(progname, '[')) != NULL) 1871 *p = '\0'; 1872 1873 (void)fprintf(stderr, 1874 "usage: %s [-BeikNnqrstWwX] \n" 1875 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1876 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1877 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1878 progname); 1879 exit(2); 1880 } 1881 1882 /* 1883 * realpath(3) can get expensive, cache results... 1884 */ 1885 static GNode *cached_realpaths = NULL; 1886 1887 static GNode * 1888 get_cached_realpaths(void) 1889 { 1890 1891 if (!cached_realpaths) { 1892 cached_realpaths = Targ_NewGN("Realpath"); 1893 #ifndef DEBUG_REALPATH_CACHE 1894 cached_realpaths->flags = INTERNAL; 1895 #endif 1896 } 1897 1898 return cached_realpaths; 1899 } 1900 1901 /* purge any relative paths */ 1902 static void 1903 purge_cached_realpaths(void) 1904 { 1905 GNode *cache = get_cached_realpaths(); 1906 Hash_Entry *he, *nhe; 1907 Hash_Search hs; 1908 1909 he = Hash_EnumFirst(&cache->context, &hs); 1910 while (he) { 1911 nhe = Hash_EnumNext(&hs); 1912 if (he->name[0] != '/') { 1913 if (DEBUG(DIR)) 1914 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1915 Hash_DeleteEntry(&cache->context, he); 1916 } 1917 he = nhe; 1918 } 1919 } 1920 1921 char * 1922 cached_realpath(const char *pathname, char *resolved) 1923 { 1924 GNode *cache; 1925 const char *rp; 1926 char *cp; 1927 1928 if (!pathname || !pathname[0]) 1929 return NULL; 1930 1931 cache = get_cached_realpaths(); 1932 1933 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1934 /* a hit */ 1935 strncpy(resolved, rp, MAXPATHLEN); 1936 resolved[MAXPATHLEN - 1] = '\0'; 1937 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1938 Var_Set(pathname, rp, cache); 1939 } /* else should we negative-cache? */ 1940 1941 bmake_free(cp); 1942 return rp ? resolved : NULL; 1943 } 1944 1945 1946 static int 1947 addErrorCMD(void *cmdp, void *gnp) 1948 { 1949 if (cmdp == NULL) 1950 return 1; /* stop */ 1951 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1952 return 0; 1953 } 1954 1955 /* 1956 * Return true if we should die without noise. 1957 * For example our failing child was a sub-make 1958 * or failure happend elsewhere. 1959 */ 1960 int 1961 dieQuietly(GNode *gn, int bf) 1962 { 1963 static int quietly = -1; 1964 1965 if (quietly < 0) { 1966 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 1967 quietly = 0; 1968 else if (bf >= 0) 1969 quietly = bf; 1970 else 1971 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 1972 } 1973 return quietly; 1974 } 1975 1976 void 1977 PrintOnError(GNode *gn, const char *s) 1978 { 1979 static GNode *en = NULL; 1980 const char *expr; 1981 char *cp; 1982 1983 if (DEBUG(HASH)) { 1984 Targ_Stats(); 1985 Var_Stats(); 1986 } 1987 1988 /* we generally want to keep quiet if a sub-make died */ 1989 if (dieQuietly(gn, -1)) 1990 return; 1991 1992 if (s) 1993 printf("%s", s); 1994 1995 printf("\n%s: stopped in %s\n", progname, curdir); 1996 1997 if (en) 1998 return; /* we've been here! */ 1999 if (gn) { 2000 /* 2001 * We can print this even if there is no .ERROR target. 2002 */ 2003 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2004 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2005 Lst_ForEach(gn->commands, addErrorCMD, gn); 2006 } 2007 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2008 cp = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2009 printf("%s", cp); 2010 free(cp); 2011 fflush(stdout); 2012 2013 /* 2014 * Finally, see if there is a .ERROR target, and run it if so. 2015 */ 2016 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2017 if (en) { 2018 en->type |= OP_SPECIAL; 2019 Compat_Make(en, en); 2020 } 2021 } 2022 2023 void 2024 Main_ExportMAKEFLAGS(Boolean first) 2025 { 2026 static Boolean once = TRUE; 2027 const char *expr; 2028 char *s; 2029 2030 if (once != first) 2031 return; 2032 once = FALSE; 2033 2034 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2035 s = Var_Subst(expr, VAR_CMD, VARE_WANTRES); 2036 if (s[0] != '\0') { 2037 #ifdef POSIX 2038 setenv("MAKEFLAGS", s, 1); 2039 #else 2040 setenv("MAKE", s, 1); 2041 #endif 2042 } 2043 } 2044 2045 char * 2046 getTmpdir(void) 2047 { 2048 static char *tmpdir = NULL; 2049 2050 if (!tmpdir) { 2051 struct stat st; 2052 2053 /* 2054 * Honor $TMPDIR but only if it is valid. 2055 * Ensure it ends with /. 2056 */ 2057 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2058 VARE_WANTRES); 2059 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2060 free(tmpdir); 2061 tmpdir = bmake_strdup(_PATH_TMP); 2062 } 2063 } 2064 return tmpdir; 2065 } 2066 2067 /* 2068 * Create and open a temp file using "pattern". 2069 * If "fnamep" is provided set it to a copy of the filename created. 2070 * Otherwise unlink the file once open. 2071 */ 2072 int 2073 mkTempFile(const char *pattern, char **fnamep) 2074 { 2075 static char *tmpdir = NULL; 2076 char tfile[MAXPATHLEN]; 2077 int fd; 2078 2079 if (!pattern) 2080 pattern = TMPPAT; 2081 if (!tmpdir) 2082 tmpdir = getTmpdir(); 2083 if (pattern[0] == '/') { 2084 snprintf(tfile, sizeof(tfile), "%s", pattern); 2085 } else { 2086 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2087 } 2088 if ((fd = mkstemp(tfile)) < 0) 2089 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2090 if (fnamep) { 2091 *fnamep = bmake_strdup(tfile); 2092 } else { 2093 unlink(tfile); /* we just want the descriptor */ 2094 } 2095 return fd; 2096 } 2097 2098 /* 2099 * Convert a string representation of a boolean. 2100 * Anything that looks like "No", "False", "Off", "0" etc, 2101 * is FALSE, otherwise TRUE. 2102 */ 2103 Boolean 2104 s2Boolean(const char *s, Boolean bf) 2105 { 2106 if (s) { 2107 switch(*s) { 2108 case '\0': /* not set - the default wins */ 2109 break; 2110 case '0': 2111 case 'F': 2112 case 'f': 2113 case 'N': 2114 case 'n': 2115 bf = FALSE; 2116 break; 2117 case 'O': 2118 case 'o': 2119 switch (s[1]) { 2120 case 'F': 2121 case 'f': 2122 bf = FALSE; 2123 break; 2124 default: 2125 bf = TRUE; 2126 break; 2127 } 2128 break; 2129 default: 2130 bf = TRUE; 2131 break; 2132 } 2133 } 2134 return bf; 2135 } 2136 2137 /* 2138 * Return a Boolean based on setting of a knob. 2139 * 2140 * If the knob is not set, the supplied default is the return value. 2141 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2142 * is FALSE, otherwise TRUE. 2143 */ 2144 Boolean 2145 getBoolean(const char *name, Boolean fallback) 2146 { 2147 char *expr = str_concat3("${", name, ":U:tl}"); 2148 char *value = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2149 Boolean res = s2Boolean(value, fallback); 2150 free(value); 2151 free(expr); 2152 return res; 2153 } 2154
Indexes created Tue Sep 23 20:09:58 GMT 2025