main.c revision 1.332
1 /* $NetBSD: main.c,v 1.332 2020/09/11 17:32:36 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 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.332 2020/09/11 17:32:36 rillig Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.332 2020/09/11 17:32:36 rillig Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and optional arguments 103 * for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and arguments for it. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and arguments for it. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/stat.h> 121 #ifdef MAKE_NATIVE 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include <sys/wait.h> 126 127 #include <ctype.h> 128 #include <errno.h> 129 #include <signal.h> 130 #include <stdarg.h> 131 #include <stdio.h> 132 #include <stdlib.h> 133 #include <time.h> 134 135 #include "make.h" 136 #include "hash.h" 137 #include "dir.h" 138 #include "job.h" 139 #include "pathnames.h" 140 #include "trace.h" 141 142 #ifdef USE_IOVEC 143 #include <sys/uio.h> 144 #endif 145 146 #ifndef DEFMAXLOCAL 147 #define DEFMAXLOCAL DEFMAXJOBS 148 #endif /* DEFMAXLOCAL */ 149 150 Lst create; /* Targets to be made */ 151 time_t now; /* Time at start of make */ 152 GNode *DEFAULT; /* .DEFAULT node */ 153 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 154 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 155 156 static Boolean noBuiltins; /* -r flag */ 157 static Lst makefiles; /* ordered list of makefiles to read */ 158 static int printVars; /* -[vV] argument */ 159 #define COMPAT_VARS 1 160 #define EXPAND_VARS 2 161 static Lst variables; /* list of variables to print 162 * (for -v and -V) */ 163 int maxJobs; /* -j argument */ 164 static int maxJobTokens; /* -j argument */ 165 Boolean compatMake; /* -B argument */ 166 int debug; /* -d argument */ 167 Boolean debugVflag; /* -dV */ 168 Boolean noExecute; /* -n flag */ 169 Boolean noRecursiveExecute; /* -N flag */ 170 Boolean keepgoing; /* -k flag */ 171 Boolean queryFlag; /* -q flag */ 172 Boolean touchFlag; /* -t flag */ 173 Boolean enterFlag; /* -w flag */ 174 Boolean enterFlagObj; /* -w and objdir != srcdir */ 175 Boolean ignoreErrors; /* -i flag */ 176 Boolean beSilent; /* -s flag */ 177 Boolean oldVars; /* variable substitution style */ 178 Boolean checkEnvFirst; /* -e flag */ 179 Boolean parseWarnFatal; /* -W flag */ 180 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 181 Boolean varNoExportEnv; /* -X flag */ 182 Boolean doing_depend; /* Set while reading .depend */ 183 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 184 static const char * tracefile; 185 static void MainParseArgs(int, char **); 186 static int ReadMakefile(const char *); 187 static void usage(void) MAKE_ATTR_DEAD; 188 static void purge_cached_realpaths(void); 189 190 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 191 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 192 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 193 char *progname; /* the program name */ 194 char *makeDependfile; 195 pid_t myPid; 196 int makelevel; 197 198 FILE *debug_file; 199 200 Boolean forceJobs = FALSE; 201 202 extern Lst parseIncPath; 203 204 /* 205 * For compatibility with the POSIX version of MAKEFLAGS that includes 206 * all the options with out -, convert flags to -f -l -a -g -s. 207 */ 208 static char * 209 explode(const char *flags) 210 { 211 size_t len; 212 char *nf, *st; 213 const char *f; 214 215 if (flags == NULL) 216 return NULL; 217 218 for (f = flags; *f; f++) 219 if (!ch_isalpha(*f)) 220 break; 221 222 if (*f) 223 return bmake_strdup(flags); 224 225 len = strlen(flags); 226 st = nf = bmake_malloc(len * 3 + 1); 227 while (*flags) { 228 *nf++ = '-'; 229 *nf++ = *flags++; 230 *nf++ = ' '; 231 } 232 *nf = '\0'; 233 return st; 234 } 235 236 static void 237 parse_debug_options(const char *argvalue) 238 { 239 const char *modules; 240 const char *mode; 241 char *fname; 242 int len; 243 244 for (modules = argvalue; *modules; ++modules) { 245 switch (*modules) { 246 case 'A': 247 debug = ~(0|DEBUG_LINT); 248 break; 249 case 'a': 250 debug |= DEBUG_ARCH; 251 break; 252 case 'C': 253 debug |= DEBUG_CWD; 254 break; 255 case 'c': 256 debug |= DEBUG_COND; 257 break; 258 case 'd': 259 debug |= DEBUG_DIR; 260 break; 261 case 'e': 262 debug |= DEBUG_ERROR; 263 break; 264 case 'f': 265 debug |= DEBUG_FOR; 266 break; 267 case 'g': 268 if (modules[1] == '1') { 269 debug |= DEBUG_GRAPH1; 270 ++modules; 271 } 272 else if (modules[1] == '2') { 273 debug |= DEBUG_GRAPH2; 274 ++modules; 275 } 276 else if (modules[1] == '3') { 277 debug |= DEBUG_GRAPH3; 278 ++modules; 279 } 280 break; 281 case 'h': 282 debug |= DEBUG_HASH; 283 break; 284 case 'j': 285 debug |= DEBUG_JOB; 286 break; 287 case 'L': 288 debug |= DEBUG_LINT; 289 break; 290 case 'l': 291 debug |= DEBUG_LOUD; 292 break; 293 case 'M': 294 debug |= DEBUG_META; 295 break; 296 case 'm': 297 debug |= DEBUG_MAKE; 298 break; 299 case 'n': 300 debug |= DEBUG_SCRIPT; 301 break; 302 case 'p': 303 debug |= DEBUG_PARSE; 304 break; 305 case 's': 306 debug |= DEBUG_SUFF; 307 break; 308 case 't': 309 debug |= DEBUG_TARG; 310 break; 311 case 'V': 312 debugVflag = TRUE; 313 break; 314 case 'v': 315 debug |= DEBUG_VAR; 316 break; 317 case 'x': 318 debug |= DEBUG_SHELL; 319 break; 320 case 'F': 321 if (debug_file != stdout && debug_file != stderr) 322 fclose(debug_file); 323 if (*++modules == '+') { 324 modules++; 325 mode = "a"; 326 } else 327 mode = "w"; 328 if (strcmp(modules, "stdout") == 0) { 329 debug_file = stdout; 330 goto debug_setbuf; 331 } 332 if (strcmp(modules, "stderr") == 0) { 333 debug_file = stderr; 334 goto debug_setbuf; 335 } 336 len = strlen(modules); 337 fname = bmake_malloc(len + 20); 338 memcpy(fname, modules, len + 1); 339 /* Let the filename be modified by the pid */ 340 if (strcmp(fname + len - 3, ".%d") == 0) 341 snprintf(fname + len - 2, 20, "%d", getpid()); 342 debug_file = fopen(fname, mode); 343 if (!debug_file) { 344 fprintf(stderr, "Cannot open debug file %s\n", 345 fname); 346 usage(); 347 } 348 free(fname); 349 goto debug_setbuf; 350 default: 351 (void)fprintf(stderr, 352 "%s: illegal argument to d option -- %c\n", 353 progname, *modules); 354 usage(); 355 } 356 } 357 debug_setbuf: 358 /* 359 * Make the debug_file unbuffered, and make 360 * stdout line buffered (unless debugfile == stdout). 361 */ 362 setvbuf(debug_file, NULL, _IONBF, 0); 363 if (debug_file != stdout) { 364 setvbuf(stdout, NULL, _IOLBF, 0); 365 } 366 } 367 368 /* 369 * does path contain any relative components 370 */ 371 static Boolean 372 is_relpath(const char *path) 373 { 374 const char *cp; 375 376 if (path[0] != '/') 377 return TRUE; 378 cp = path; 379 while ((cp = strstr(cp, "/.")) != NULL) { 380 cp += 2; 381 if (cp[0] == '/' || cp[0] == '\0') 382 return TRUE; 383 else if (cp[0] == '.') { 384 if (cp[1] == '/' || cp[1] == '\0') 385 return TRUE; 386 } 387 } 388 return FALSE; 389 } 390 391 /*- 392 * MainParseArgs -- 393 * Parse a given argument vector. Called from main() and from 394 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 395 * 396 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 397 * 398 * Results: 399 * None 400 * 401 * Side Effects: 402 * Various global and local flags will be set depending on the flags 403 * given 404 */ 405 static void 406 MainParseArgs(int argc, char **argv) 407 { 408 char *p; 409 char c = '?'; 410 int arginc; 411 char *argvalue; 412 const char *getopt_def; 413 struct stat sa, sb; 414 char *optscan; 415 Boolean inOption, dashDash = FALSE; 416 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 417 418 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w" 419 /* Can't actually use getopt(3) because rescanning is not portable */ 420 421 getopt_def = OPTFLAGS; 422 rearg: 423 inOption = FALSE; 424 optscan = NULL; 425 while(argc > 1) { 426 char *getopt_spec; 427 if(!inOption) 428 optscan = argv[1]; 429 c = *optscan++; 430 arginc = 0; 431 if(inOption) { 432 if(c == '\0') { 433 ++argv; 434 --argc; 435 inOption = FALSE; 436 continue; 437 } 438 } else { 439 if (c != '-' || dashDash) 440 break; 441 inOption = TRUE; 442 c = *optscan++; 443 } 444 /* '-' found at some earlier point */ 445 getopt_spec = strchr(getopt_def, c); 446 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 447 /* -<something> found, and <something> should have an arg */ 448 inOption = FALSE; 449 arginc = 1; 450 argvalue = optscan; 451 if(*argvalue == '\0') { 452 if (argc < 3) 453 goto noarg; 454 argvalue = argv[2]; 455 arginc = 2; 456 } 457 } else { 458 argvalue = NULL; 459 } 460 switch(c) { 461 case '\0': 462 arginc = 1; 463 inOption = FALSE; 464 break; 465 case 'B': 466 compatMake = TRUE; 467 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 468 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 469 break; 470 case 'C': 471 if (chdir(argvalue) == -1) { 472 (void)fprintf(stderr, 473 "%s: chdir %s: %s\n", 474 progname, argvalue, 475 strerror(errno)); 476 exit(1); 477 } 478 if (getcwd(curdir, MAXPATHLEN) == NULL) { 479 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 480 exit(2); 481 } 482 if (!is_relpath(argvalue) && 483 stat(argvalue, &sa) != -1 && 484 stat(curdir, &sb) != -1 && 485 sa.st_ino == sb.st_ino && 486 sa.st_dev == sb.st_dev) 487 strncpy(curdir, argvalue, MAXPATHLEN); 488 ignorePWD = TRUE; 489 break; 490 case 'D': 491 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 492 Var_Set(argvalue, "1", VAR_GLOBAL); 493 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 494 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 495 break; 496 case 'I': 497 if (argvalue == NULL) goto noarg; 498 Parse_AddIncludeDir(argvalue); 499 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 500 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 501 break; 502 case 'J': 503 if (argvalue == NULL) goto noarg; 504 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 505 (void)fprintf(stderr, 506 "%s: internal error -- J option malformed (%s)\n", 507 progname, argvalue); 508 usage(); 509 } 510 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 511 (fcntl(jp_1, F_GETFD, 0) < 0)) { 512 #if 0 513 (void)fprintf(stderr, 514 "%s: ###### warning -- J descriptors were closed!\n", 515 progname); 516 exit(2); 517 #endif 518 jp_0 = -1; 519 jp_1 = -1; 520 compatMake = TRUE; 521 } else { 522 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 523 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 524 } 525 break; 526 case 'N': 527 noExecute = TRUE; 528 noRecursiveExecute = TRUE; 529 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 530 break; 531 case 'S': 532 keepgoing = FALSE; 533 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 534 break; 535 case 'T': 536 if (argvalue == NULL) goto noarg; 537 tracefile = bmake_strdup(argvalue); 538 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 539 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 540 break; 541 case 'V': 542 case 'v': 543 if (argvalue == NULL) goto noarg; 544 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 545 Lst_Append(variables, argvalue); 546 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 547 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 548 break; 549 case 'W': 550 parseWarnFatal = TRUE; 551 break; 552 case 'X': 553 varNoExportEnv = TRUE; 554 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 555 break; 556 case 'd': 557 if (argvalue == NULL) goto noarg; 558 /* If '-d-opts' don't pass to children */ 559 if (argvalue[0] == '-') 560 argvalue++; 561 else { 562 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 563 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 564 } 565 parse_debug_options(argvalue); 566 break; 567 case 'e': 568 checkEnvFirst = TRUE; 569 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 570 break; 571 case 'f': 572 if (argvalue == NULL) goto noarg; 573 Lst_Append(makefiles, argvalue); 574 break; 575 case 'i': 576 ignoreErrors = TRUE; 577 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 578 break; 579 case 'j': 580 if (argvalue == NULL) goto noarg; 581 forceJobs = TRUE; 582 maxJobs = strtol(argvalue, &p, 0); 583 if (*p != '\0' || maxJobs < 1) { 584 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 585 progname); 586 exit(1); 587 } 588 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 589 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 590 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 591 maxJobTokens = maxJobs; 592 break; 593 case 'k': 594 keepgoing = TRUE; 595 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 596 break; 597 case 'm': 598 if (argvalue == NULL) goto noarg; 599 /* look for magic parent directory search string */ 600 if (strncmp(".../", argvalue, 4) == 0) { 601 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 602 found_path, sizeof(found_path))) 603 break; /* nothing doing */ 604 (void)Dir_AddDir(sysIncPath, found_path); 605 } else { 606 (void)Dir_AddDir(sysIncPath, argvalue); 607 } 608 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 609 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 610 break; 611 case 'n': 612 noExecute = TRUE; 613 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 614 break; 615 case 'q': 616 queryFlag = TRUE; 617 /* Kind of nonsensical, wot? */ 618 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 619 break; 620 case 'r': 621 noBuiltins = TRUE; 622 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 623 break; 624 case 's': 625 beSilent = TRUE; 626 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 627 break; 628 case 't': 629 touchFlag = TRUE; 630 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 631 break; 632 case 'w': 633 enterFlag = TRUE; 634 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 635 break; 636 case '-': 637 dashDash = TRUE; 638 break; 639 default: 640 case '?': 641 usage(); 642 } 643 argv += arginc; 644 argc -= arginc; 645 } 646 647 oldVars = TRUE; 648 649 /* 650 * See if the rest of the arguments are variable assignments and 651 * perform them if so. Else take them to be targets and stuff them 652 * on the end of the "create" list. 653 */ 654 for (; argc > 1; ++argv, --argc) 655 if (Parse_IsVar(argv[1])) { 656 Parse_DoVar(argv[1], VAR_CMD); 657 } else { 658 if (!*argv[1]) 659 Punt("illegal (null) argument."); 660 if (*argv[1] == '-' && !dashDash) 661 goto rearg; 662 Lst_Append(create, bmake_strdup(argv[1])); 663 } 664 665 return; 666 noarg: 667 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 668 progname, c); 669 usage(); 670 } 671 672 /*- 673 * Main_ParseArgLine -- 674 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 675 * is encountered and by main() when reading the .MAKEFLAGS envariable. 676 * Takes a line of arguments and breaks it into its 677 * component words and passes those words and the number of them to the 678 * MainParseArgs function. 679 * The line should have all its leading whitespace removed. 680 * 681 * Input: 682 * line Line to fracture 683 * 684 * Results: 685 * None 686 * 687 * Side Effects: 688 * Only those that come from the various arguments. 689 */ 690 void 691 Main_ParseArgLine(const char *line) 692 { 693 Words words; 694 char *p1; 695 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 696 char *buf; 697 698 if (line == NULL) 699 return; 700 for (; *line == ' '; ++line) 701 continue; 702 if (!*line) 703 return; 704 705 buf = str_concat3(argv0, " ", line); 706 free(p1); 707 708 words = Str_Words(buf, TRUE); 709 if (words.words == NULL) { 710 Error("Unterminated quoted string [%s]", buf); 711 free(buf); 712 return; 713 } 714 free(buf); 715 MainParseArgs((int)words.len, words.words); 716 717 Words_Free(words); 718 } 719 720 Boolean 721 Main_SetObjdir(const char *fmt, ...) 722 { 723 struct stat sb; 724 char *path; 725 char buf[MAXPATHLEN + 1]; 726 char buf2[MAXPATHLEN + 1]; 727 Boolean rc = FALSE; 728 va_list ap; 729 730 va_start(ap, fmt); 731 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 732 va_end(ap); 733 734 if (path[0] != '/') { 735 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 736 path = buf2; 737 } 738 739 /* look for the directory and try to chdir there */ 740 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 741 if (chdir(path)) { 742 (void)fprintf(stderr, "make warning: %s: %s.\n", 743 path, strerror(errno)); 744 } else { 745 snprintf(objdir, sizeof objdir, "%s", path); 746 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 747 setenv("PWD", objdir, 1); 748 Dir_InitDot(); 749 purge_cached_realpaths(); 750 rc = TRUE; 751 if (enterFlag && strcmp(objdir, curdir) != 0) 752 enterFlagObj = TRUE; 753 } 754 } 755 756 return rc; 757 } 758 759 static Boolean 760 Main_SetVarObjdir(const char *var, const char *suffix) 761 { 762 char *path_freeIt; 763 const char *path = Var_Value(var, VAR_CMD, &path_freeIt); 764 const char *xpath; 765 char *xpath_freeIt; 766 767 if (path == NULL || path[0] == '\0') { 768 bmake_free(path_freeIt); 769 return FALSE; 770 } 771 772 /* expand variable substitutions */ 773 xpath = path; 774 xpath_freeIt = NULL; 775 if (strchr(path, '$') != 0) 776 xpath = xpath_freeIt = Var_Subst(path, VAR_GLOBAL, 777 VARE_WANTRES); 778 779 (void)Main_SetObjdir("%s%s", xpath, suffix); 780 781 bmake_free(xpath_freeIt); 782 bmake_free(path_freeIt); 783 return TRUE; 784 } 785 786 /* Read and parse the makefile. 787 * Return TRUE if reading the makefile succeeded, for Lst_Find. */ 788 static Boolean 789 ReadMakefileSucceeded(const void *fname, const void *unused) 790 { 791 return ReadMakefile(fname) == 0; 792 } 793 794 /* Read and parse the makefile. 795 * Return TRUE if reading the makefile failed, for Lst_Find. */ 796 static Boolean 797 ReadMakefileFailed(const void *fname, const void *unused) 798 { 799 return ReadMakefile(fname) != 0; 800 } 801 802 int 803 str2Lst_Append(Lst lp, char *str, const char *sep) 804 { 805 char *cp; 806 int n; 807 808 if (!sep) 809 sep = " \t"; 810 811 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 812 Lst_Append(lp, cp); 813 n++; 814 } 815 return n; 816 } 817 818 #ifdef SIGINFO 819 /*ARGSUSED*/ 820 static void 821 siginfo(int signo MAKE_ATTR_UNUSED) 822 { 823 char dir[MAXPATHLEN]; 824 char str[2 * MAXPATHLEN]; 825 int len; 826 if (getcwd(dir, sizeof(dir)) == NULL) 827 return; 828 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 829 if (len > 0) 830 (void)write(STDERR_FILENO, str, (size_t)len); 831 } 832 #endif 833 834 /* 835 * Allow makefiles some control over the mode we run in. 836 */ 837 void 838 MakeMode(const char *mode) 839 { 840 char *mode_freeIt = NULL; 841 842 if (mode == NULL) 843 mode = mode_freeIt = Var_Subst("${" MAKE_MODE ":tl}", 844 VAR_GLOBAL, VARE_WANTRES); 845 846 if (mode[0] != '\0') { 847 if (strstr(mode, "compat")) { 848 compatMake = TRUE; 849 forceJobs = FALSE; 850 } 851 #if USE_META 852 if (strstr(mode, "meta")) 853 meta_mode_init(mode); 854 #endif 855 } 856 857 free(mode_freeIt); 858 } 859 860 static void 861 doPrintVars(void) 862 { 863 LstNode ln; 864 Boolean expandVars; 865 866 if (printVars == EXPAND_VARS) 867 expandVars = TRUE; 868 else if (debugVflag) 869 expandVars = FALSE; 870 else 871 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 872 873 for (ln = Lst_First(variables); ln != NULL; ln = LstNode_Next(ln)) { 874 char *var = LstNode_Datum(ln); 875 const char *value; 876 char *p1; 877 878 if (strchr(var, '$')) { 879 value = p1 = Var_Subst(var, VAR_GLOBAL, VARE_WANTRES); 880 } else if (expandVars) { 881 char tmp[128]; 882 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 883 884 if (len >= (int)sizeof(tmp)) 885 Fatal("%s: variable name too big: %s", 886 progname, var); 887 value = p1 = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 888 } else { 889 value = Var_Value(var, VAR_GLOBAL, &p1); 890 } 891 printf("%s\n", value ? value : ""); 892 bmake_free(p1); 893 } 894 } 895 896 static Boolean 897 runTargets(void) 898 { 899 Lst targs; /* target nodes to create -- passed to Make_Init */ 900 Boolean outOfDate; /* FALSE if all targets up to date */ 901 902 /* 903 * Have now read the entire graph and need to make a list of 904 * targets to create. If none was given on the command line, 905 * we consult the parsing module to find the main target(s) 906 * to create. 907 */ 908 if (Lst_IsEmpty(create)) 909 targs = Parse_MainName(); 910 else 911 targs = Targ_FindList(create, TARG_CREATE); 912 913 if (!compatMake) { 914 /* 915 * Initialize job module before traversing the graph 916 * now that any .BEGIN and .END targets have been read. 917 * This is done only if the -q flag wasn't given 918 * (to prevent the .BEGIN from being executed should 919 * it exist). 920 */ 921 if (!queryFlag) { 922 Job_Init(); 923 jobsRunning = TRUE; 924 } 925 926 /* Traverse the graph, checking on all the targets */ 927 outOfDate = Make_Run(targs); 928 } else { 929 /* 930 * Compat_Init will take care of creating all the 931 * targets as well as initializing the module. 932 */ 933 Compat_Run(targs); 934 outOfDate = FALSE; 935 } 936 Lst_Free(targs); 937 return outOfDate; 938 } 939 940 /*- 941 * main -- 942 * The main function, for obvious reasons. Initializes variables 943 * and a few modules, then parses the arguments give it in the 944 * environment and on the command line. Reads the system makefile 945 * followed by either Makefile, makefile or the file given by the 946 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 947 * flags it has received by then uses either the Make or the Compat 948 * module to create the initial list of targets. 949 * 950 * Results: 951 * If -q was given, exits -1 if anything was out-of-date. Else it exits 952 * 0. 953 * 954 * Side Effects: 955 * The program exits when done. Targets are created. etc. etc. etc. 956 */ 957 int 958 main(int argc, char **argv) 959 { 960 Boolean outOfDate; /* FALSE if all targets up to date */ 961 struct stat sb, sa; 962 char *p1, *path; 963 char mdpath[MAXPATHLEN]; 964 const char *machine = getenv("MACHINE"); 965 const char *machine_arch = getenv("MACHINE_ARCH"); 966 char *syspath = getenv("MAKESYSPATH"); 967 Lst sysMkPath; /* Path of sys.mk */ 968 char *cp = NULL, *start; 969 /* avoid faults on read-only strings */ 970 static char defsyspath[] = _PATH_DEFSYSPATH; 971 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 972 struct timeval rightnow; /* to initialize random seed */ 973 struct utsname utsname; 974 975 /* default to writing debug to stderr */ 976 debug_file = stderr; 977 978 #ifdef SIGINFO 979 (void)bmake_signal(SIGINFO, siginfo); 980 #endif 981 /* 982 * Set the seed to produce a different random sequence 983 * on each program execution. 984 */ 985 gettimeofday(&rightnow, NULL); 986 srandom(rightnow.tv_sec + rightnow.tv_usec); 987 988 if ((progname = strrchr(argv[0], '/')) != NULL) 989 progname++; 990 else 991 progname = argv[0]; 992 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 993 /* 994 * get rid of resource limit on file descriptors 995 */ 996 { 997 struct rlimit rl; 998 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 999 rl.rlim_cur != rl.rlim_max) { 1000 rl.rlim_cur = rl.rlim_max; 1001 (void)setrlimit(RLIMIT_NOFILE, &rl); 1002 } 1003 } 1004 #endif 1005 1006 if (uname(&utsname) == -1) { 1007 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1008 strerror(errno)); 1009 exit(2); 1010 } 1011 1012 /* 1013 * Get the name of this type of MACHINE from utsname 1014 * so we can share an executable for similar machines. 1015 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1016 * 1017 * Note that both MACHINE and MACHINE_ARCH are decided at 1018 * run-time. 1019 */ 1020 if (!machine) { 1021 #ifdef MAKE_NATIVE 1022 machine = utsname.machine; 1023 #else 1024 #ifdef MAKE_MACHINE 1025 machine = MAKE_MACHINE; 1026 #else 1027 machine = "unknown"; 1028 #endif 1029 #endif 1030 } 1031 1032 if (!machine_arch) { 1033 #ifdef MAKE_NATIVE 1034 static char machine_arch_buf[sizeof(utsname.machine)]; 1035 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1036 size_t len = sizeof(machine_arch_buf); 1037 1038 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1039 &len, NULL, 0) < 0) { 1040 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1041 strerror(errno)); 1042 exit(2); 1043 } 1044 1045 machine_arch = machine_arch_buf; 1046 #else 1047 #ifndef MACHINE_ARCH 1048 #ifdef MAKE_MACHINE_ARCH 1049 machine_arch = MAKE_MACHINE_ARCH; 1050 #else 1051 machine_arch = "unknown"; 1052 #endif 1053 #else 1054 machine_arch = MACHINE_ARCH; 1055 #endif 1056 #endif 1057 } 1058 1059 myPid = getpid(); /* remember this for vFork() */ 1060 1061 /* 1062 * Just in case MAKEOBJDIR wants us to do something tricky. 1063 */ 1064 Var_Init(); /* Initialize the lists of variables for 1065 * parsing arguments */ 1066 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1067 Var_Set("MACHINE", machine, VAR_GLOBAL); 1068 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1069 #ifdef MAKE_VERSION 1070 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1071 #endif 1072 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1073 /* 1074 * This is the traditional preference for makefiles. 1075 */ 1076 #ifndef MAKEFILE_PREFERENCE_LIST 1077 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1078 #endif 1079 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1080 VAR_GLOBAL); 1081 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1082 1083 create = Lst_Init(); 1084 makefiles = Lst_Init(); 1085 printVars = 0; 1086 debugVflag = FALSE; 1087 variables = Lst_Init(); 1088 beSilent = FALSE; /* Print commands as executed */ 1089 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1090 noExecute = FALSE; /* Execute all commands */ 1091 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1092 keepgoing = FALSE; /* Stop on error */ 1093 allPrecious = FALSE; /* Remove targets when interrupted */ 1094 deleteOnError = FALSE; /* Historical default behavior */ 1095 queryFlag = FALSE; /* This is not just a check-run */ 1096 noBuiltins = FALSE; /* Read the built-in rules */ 1097 touchFlag = FALSE; /* Actually update targets */ 1098 debug = 0; /* No debug verbosity, please. */ 1099 jobsRunning = FALSE; 1100 1101 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1102 maxJobTokens = maxJobs; 1103 compatMake = FALSE; /* No compat mode */ 1104 ignorePWD = FALSE; 1105 1106 /* 1107 * Initialize the parsing, directory and variable modules to prepare 1108 * for the reading of inclusion paths and variable settings on the 1109 * command line 1110 */ 1111 1112 /* 1113 * Initialize various variables. 1114 * MAKE also gets this name, for compatibility 1115 * .MAKEFLAGS gets set to the empty string just in case. 1116 * MFLAGS also gets initialized empty, for compatibility. 1117 */ 1118 Parse_Init(); 1119 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1120 /* 1121 * Leave alone if it is an absolute path, or if it does 1122 * not contain a '/' in which case we need to find it in 1123 * the path, like execvp(3) and the shells do. 1124 */ 1125 p1 = argv[0]; 1126 } else { 1127 /* 1128 * A relative path, canonicalize it. 1129 */ 1130 p1 = cached_realpath(argv[0], mdpath); 1131 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1132 p1 = argv[0]; /* realpath failed */ 1133 } 1134 } 1135 Var_Set("MAKE", p1, VAR_GLOBAL); 1136 Var_Set(".MAKE", p1, VAR_GLOBAL); 1137 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1138 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1139 Var_Set("MFLAGS", "", VAR_GLOBAL); 1140 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1141 /* some makefiles need to know this */ 1142 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1143 1144 /* 1145 * Set some other useful macros 1146 */ 1147 { 1148 char tmp[64], *ep; 1149 1150 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1151 if (makelevel < 0) 1152 makelevel = 0; 1153 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1154 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1155 snprintf(tmp, sizeof(tmp), "%u", myPid); 1156 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1157 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1158 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1159 } 1160 if (makelevel > 0) { 1161 char pn[1024]; 1162 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1163 progname = bmake_strdup(pn); 1164 } 1165 1166 #ifdef USE_META 1167 meta_init(); 1168 #endif 1169 Dir_Init(); 1170 1171 /* 1172 * First snag any flags out of the MAKE environment variable. 1173 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1174 * in a different format). 1175 */ 1176 #ifdef POSIX 1177 p1 = explode(getenv("MAKEFLAGS")); 1178 Main_ParseArgLine(p1); 1179 free(p1); 1180 #else 1181 Main_ParseArgLine(getenv("MAKE")); 1182 #endif 1183 1184 /* 1185 * Find where we are (now). 1186 * We take care of PWD for the automounter below... 1187 */ 1188 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1189 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1190 progname, strerror(errno)); 1191 exit(2); 1192 } 1193 1194 MainParseArgs(argc, argv); 1195 1196 if (enterFlag) 1197 printf("%s: Entering directory `%s'\n", progname, curdir); 1198 1199 /* 1200 * Verify that cwd is sane. 1201 */ 1202 if (stat(curdir, &sa) == -1) { 1203 (void)fprintf(stderr, "%s: %s: %s.\n", 1204 progname, curdir, strerror(errno)); 1205 exit(2); 1206 } 1207 1208 /* 1209 * All this code is so that we know where we are when we start up 1210 * on a different machine with pmake. 1211 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1212 * since the value of curdir can vary depending on how we got 1213 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1214 * or via subdir.mk in which case its likely a shell which does 1215 * not provide it. 1216 * So, to stop it breaking this case only, we ignore PWD if 1217 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1218 */ 1219 #ifndef NO_PWD_OVERRIDE 1220 if (!ignorePWD) { 1221 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1222 1223 if ((pwd = getenv("PWD")) != NULL && 1224 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1225 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1226 VAR_CMD, &ptmp2); 1227 1228 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1229 if (stat(pwd, &sb) == 0 && 1230 sa.st_ino == sb.st_ino && 1231 sa.st_dev == sb.st_dev) 1232 (void)strncpy(curdir, pwd, MAXPATHLEN); 1233 } 1234 } 1235 bmake_free(ptmp1); 1236 bmake_free(ptmp2); 1237 } 1238 #endif 1239 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1240 1241 /* 1242 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1243 * MAKEOBJDIR is set in the environment, try only that value 1244 * and fall back to .CURDIR if it does not exist. 1245 * 1246 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1247 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1248 * of these paths exist, just use .CURDIR. 1249 */ 1250 Dir_InitDir(curdir); 1251 (void)Main_SetObjdir("%s", curdir); 1252 1253 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1254 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1255 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1256 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1257 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1258 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1259 1260 /* 1261 * Initialize archive, target and suffix modules in preparation for 1262 * parsing the makefile(s) 1263 */ 1264 Arch_Init(); 1265 Targ_Init(); 1266 Suff_Init(); 1267 Trace_Init(tracefile); 1268 1269 DEFAULT = NULL; 1270 (void)time(&now); 1271 1272 Trace_Log(MAKESTART, NULL); 1273 1274 /* 1275 * Set up the .TARGETS variable to contain the list of targets to be 1276 * created. If none specified, make the variable empty -- the parser 1277 * will fill the thing in with the default or .MAIN target. 1278 */ 1279 if (!Lst_IsEmpty(create)) { 1280 LstNode ln; 1281 1282 for (ln = Lst_First(create); ln != NULL; ln = LstNode_Next(ln)) { 1283 char *name = LstNode_Datum(ln); 1284 Var_Append(".TARGETS", name, VAR_GLOBAL); 1285 } 1286 } else 1287 Var_Set(".TARGETS", "", VAR_GLOBAL); 1288 1289 1290 /* 1291 * If no user-supplied system path was given (through the -m option) 1292 * add the directories from the DEFSYSPATH (more than one may be given 1293 * as dir1:...:dirn) to the system include path. 1294 */ 1295 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1296 if (syspath == NULL || syspath[0] == '\0') 1297 syspath = defsyspath; 1298 else 1299 syspath = bmake_strdup(syspath); 1300 1301 for (start = syspath; *start != '\0'; start = cp) { 1302 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1303 continue; 1304 if (*cp == ':') { 1305 *cp++ = '\0'; 1306 } 1307 /* look for magic parent directory search string */ 1308 if (strncmp(".../", start, 4) != 0) { 1309 (void)Dir_AddDir(defIncPath, start); 1310 } else { 1311 if (Dir_FindHereOrAbove(curdir, start+4, 1312 found_path, sizeof(found_path))) { 1313 (void)Dir_AddDir(defIncPath, found_path); 1314 } 1315 } 1316 } 1317 if (syspath != defsyspath) 1318 free(syspath); 1319 1320 /* 1321 * Read in the built-in rules first, followed by the specified 1322 * makefiles, or the default makefile and Makefile, in that order, 1323 * if no makefiles were given on the command line. 1324 */ 1325 if (!noBuiltins) { 1326 LstNode ln; 1327 1328 sysMkPath = Lst_Init(); 1329 Dir_Expand(_PATH_DEFSYSMK, 1330 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1331 sysMkPath); 1332 if (Lst_IsEmpty(sysMkPath)) 1333 Fatal("%s: no system rules (%s).", progname, 1334 _PATH_DEFSYSMK); 1335 ln = Lst_Find(sysMkPath, ReadMakefileSucceeded, NULL); 1336 if (ln == NULL) 1337 Fatal("%s: cannot open %s.", progname, 1338 (char *)LstNode_Datum(Lst_First(sysMkPath))); 1339 } 1340 1341 if (!Lst_IsEmpty(makefiles)) { 1342 LstNode ln; 1343 1344 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1345 if (ln != NULL) 1346 Fatal("%s: cannot open %s.", progname, 1347 (char *)LstNode_Datum(ln)); 1348 } else { 1349 p1 = Var_Subst("${" MAKEFILE_PREFERENCE "}", 1350 VAR_CMD, VARE_WANTRES); 1351 (void)str2Lst_Append(makefiles, p1, NULL); 1352 (void)Lst_Find(makefiles, ReadMakefileSucceeded, NULL); 1353 free(p1); 1354 } 1355 1356 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1357 if (!noBuiltins || !printVars) { 1358 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE:T}", 1359 VAR_CMD, VARE_WANTRES); 1360 doing_depend = TRUE; 1361 (void)ReadMakefile(makeDependfile); 1362 doing_depend = FALSE; 1363 } 1364 1365 if (enterFlagObj) 1366 printf("%s: Entering directory `%s'\n", progname, objdir); 1367 1368 MakeMode(NULL); 1369 1370 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1371 bmake_free(p1); 1372 1373 if (!forceJobs && !compatMake && 1374 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1375 char *value; 1376 int n; 1377 1378 value = Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES); 1379 n = strtol(value, NULL, 0); 1380 if (n < 1) { 1381 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1382 progname); 1383 exit(1); 1384 } 1385 if (n != maxJobs) { 1386 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1387 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1388 } 1389 maxJobs = n; 1390 maxJobTokens = maxJobs; 1391 forceJobs = TRUE; 1392 free(value); 1393 } 1394 1395 /* 1396 * Be compatible if user did not specify -j and did not explicitly 1397 * turned compatibility on 1398 */ 1399 if (!compatMake && !forceJobs) { 1400 compatMake = TRUE; 1401 } 1402 1403 if (!compatMake) 1404 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1405 if (DEBUG(JOB)) 1406 fprintf(debug_file, 1407 "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1408 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1409 1410 if (!printVars) 1411 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1412 1413 1414 /* 1415 * For compatibility, look at the directories in the VPATH variable 1416 * and add them to the search path, if the variable is defined. The 1417 * variable's value is in the same format as the PATH envariable, i.e. 1418 * <directory>:<directory>:<directory>... 1419 */ 1420 if (Var_Exists("VPATH", VAR_CMD)) { 1421 char *vpath, savec; 1422 /* 1423 * GCC stores string constants in read-only memory, but 1424 * Var_Subst will want to write this thing, so store it 1425 * in an array 1426 */ 1427 static char VPATH[] = "${VPATH}"; 1428 1429 vpath = Var_Subst(VPATH, VAR_CMD, VARE_WANTRES); 1430 path = vpath; 1431 do { 1432 /* skip to end of directory */ 1433 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1434 continue; 1435 /* Save terminator character so know when to stop */ 1436 savec = *cp; 1437 *cp = '\0'; 1438 /* Add directory to search path */ 1439 (void)Dir_AddDir(dirSearchPath, path); 1440 *cp = savec; 1441 path = cp + 1; 1442 } while (savec == ':'); 1443 free(vpath); 1444 } 1445 1446 /* 1447 * Now that all search paths have been read for suffixes et al, it's 1448 * time to add the default search path to their lists... 1449 */ 1450 Suff_DoPaths(); 1451 1452 /* 1453 * Propagate attributes through :: dependency lists. 1454 */ 1455 Targ_Propagate(); 1456 1457 /* print the initial graph, if the user requested it */ 1458 if (DEBUG(GRAPH1)) 1459 Targ_PrintGraph(1); 1460 1461 /* print the values of any variables requested by the user */ 1462 if (printVars) { 1463 doPrintVars(); 1464 outOfDate = FALSE; 1465 } else { 1466 outOfDate = runTargets(); 1467 } 1468 1469 #ifdef CLEANUP 1470 Lst_Free(variables); 1471 Lst_Free(makefiles); 1472 Lst_Destroy(create, free); 1473 #endif 1474 1475 /* print the graph now it's been processed if the user requested it */ 1476 if (DEBUG(GRAPH2)) 1477 Targ_PrintGraph(2); 1478 1479 Trace_Log(MAKEEND, 0); 1480 1481 if (enterFlagObj) 1482 printf("%s: Leaving directory `%s'\n", progname, objdir); 1483 if (enterFlag) 1484 printf("%s: Leaving directory `%s'\n", progname, curdir); 1485 1486 #ifdef USE_META 1487 meta_finish(); 1488 #endif 1489 Suff_End(); 1490 Targ_End(); 1491 Arch_End(); 1492 Var_End(); 1493 Parse_End(); 1494 Dir_End(); 1495 Job_End(); 1496 Trace_End(); 1497 1498 return outOfDate ? 1 : 0; 1499 } 1500 1501 /* Open and parse the given makefile, with all its side effects. 1502 * 1503 * Results: 1504 * 0 if ok. -1 if couldn't open file. 1505 */ 1506 static int 1507 ReadMakefile(const char *fname) 1508 { 1509 int fd; 1510 char *name, *path = NULL; 1511 1512 if (!strcmp(fname, "-")) { 1513 Parse_File(NULL /*stdin*/, -1); 1514 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1515 } else { 1516 /* if we've chdir'd, rebuild the path name */ 1517 if (strcmp(curdir, objdir) && *fname != '/') { 1518 path = str_concat3(curdir, "/", fname); 1519 fd = open(path, O_RDONLY); 1520 if (fd != -1) { 1521 fname = path; 1522 goto found; 1523 } 1524 free(path); 1525 1526 /* If curdir failed, try objdir (ala .depend) */ 1527 path = str_concat3(objdir, "/", fname); 1528 fd = open(path, O_RDONLY); 1529 if (fd != -1) { 1530 fname = path; 1531 goto found; 1532 } 1533 } else { 1534 fd = open(fname, O_RDONLY); 1535 if (fd != -1) 1536 goto found; 1537 } 1538 /* look in -I and system include directories. */ 1539 name = Dir_FindFile(fname, parseIncPath); 1540 if (!name) 1541 name = Dir_FindFile(fname, 1542 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1543 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1544 free(name); 1545 free(path); 1546 return -1; 1547 } 1548 fname = name; 1549 /* 1550 * set the MAKEFILE variable desired by System V fans -- the 1551 * placement of the setting here means it gets set to the last 1552 * makefile specified, as it is set by SysV make. 1553 */ 1554 found: 1555 if (!doing_depend) 1556 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1557 Parse_File(fname, fd); 1558 } 1559 free(path); 1560 return 0; 1561 } 1562 1563 1564 1565 /*- 1566 * Cmd_Exec -- 1567 * Execute the command in cmd, and return the output of that command 1568 * in a string. In the output, newlines are replaced with spaces. 1569 * 1570 * Results: 1571 * A string containing the output of the command, or the empty string. 1572 * *errfmt returns a format string describing the command failure, 1573 * if any, using a single %s conversion specification. 1574 * 1575 * Side Effects: 1576 * The string must be freed by the caller. 1577 */ 1578 char * 1579 Cmd_Exec(const char *cmd, const char **errfmt) 1580 { 1581 const char *args[4]; /* Args for invoking the shell */ 1582 int fds[2]; /* Pipe streams */ 1583 int cpid; /* Child PID */ 1584 int pid; /* PID from wait() */ 1585 int status; /* command exit status */ 1586 Buffer buf; /* buffer to store the result */ 1587 ssize_t bytes_read; 1588 char *res; /* result */ 1589 size_t res_len; 1590 char *cp; 1591 int savederr; /* saved errno */ 1592 1593 *errfmt = NULL; 1594 1595 if (!shellName) 1596 Shell_Init(); 1597 /* 1598 * Set up arguments for shell 1599 */ 1600 args[0] = shellName; 1601 args[1] = "-c"; 1602 args[2] = cmd; 1603 args[3] = NULL; 1604 1605 /* 1606 * Open a pipe for fetching its output 1607 */ 1608 if (pipe(fds) == -1) { 1609 *errfmt = "Couldn't create pipe for \"%s\""; 1610 goto bad; 1611 } 1612 1613 /* 1614 * Fork 1615 */ 1616 switch (cpid = vFork()) { 1617 case 0: 1618 /* 1619 * Close input side of pipe 1620 */ 1621 (void)close(fds[0]); 1622 1623 /* 1624 * Duplicate the output stream to the shell's output, then 1625 * shut the extra thing down. Note we don't fetch the error 1626 * stream...why not? Why? 1627 */ 1628 (void)dup2(fds[1], 1); 1629 (void)close(fds[1]); 1630 1631 Var_ExportVars(); 1632 1633 (void)execv(shellPath, UNCONST(args)); 1634 _exit(1); 1635 /*NOTREACHED*/ 1636 1637 case -1: 1638 *errfmt = "Couldn't exec \"%s\""; 1639 goto bad; 1640 1641 default: 1642 /* 1643 * No need for the writing half 1644 */ 1645 (void)close(fds[1]); 1646 1647 savederr = 0; 1648 Buf_Init(&buf, 0); 1649 1650 do { 1651 char result[BUFSIZ]; 1652 bytes_read = read(fds[0], result, sizeof(result)); 1653 if (bytes_read > 0) 1654 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1655 } 1656 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1657 if (bytes_read == -1) 1658 savederr = errno; 1659 1660 /* 1661 * Close the input side of the pipe. 1662 */ 1663 (void)close(fds[0]); 1664 1665 /* 1666 * Wait for the process to exit. 1667 */ 1668 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1669 JobReapChild(pid, status, FALSE); 1670 continue; 1671 } 1672 res_len = Buf_Size(&buf); 1673 res = Buf_Destroy(&buf, FALSE); 1674 1675 if (savederr != 0) 1676 *errfmt = "Couldn't read shell's output for \"%s\""; 1677 1678 if (WIFSIGNALED(status)) 1679 *errfmt = "\"%s\" exited on a signal"; 1680 else if (WEXITSTATUS(status) != 0) 1681 *errfmt = "\"%s\" returned non-zero status"; 1682 1683 /* Convert newlines to spaces. A final newline is just stripped */ 1684 if (res_len > 0 && res[res_len - 1] == '\n') 1685 res[res_len - 1] = '\0'; 1686 for (cp = res; *cp != '\0'; cp++) 1687 if (*cp == '\n') 1688 *cp = ' '; 1689 break; 1690 } 1691 return res; 1692 bad: 1693 return bmake_strdup(""); 1694 } 1695 1696 /*- 1697 * Error -- 1698 * Print an error message given its format. 1699 * 1700 * Results: 1701 * None. 1702 * 1703 * Side Effects: 1704 * The message is printed. 1705 */ 1706 /* VARARGS */ 1707 void 1708 Error(const char *fmt, ...) 1709 { 1710 va_list ap; 1711 FILE *err_file; 1712 1713 err_file = debug_file; 1714 if (err_file == stdout) 1715 err_file = stderr; 1716 (void)fflush(stdout); 1717 for (;;) { 1718 va_start(ap, fmt); 1719 fprintf(err_file, "%s: ", progname); 1720 (void)vfprintf(err_file, fmt, ap); 1721 va_end(ap); 1722 (void)fprintf(err_file, "\n"); 1723 (void)fflush(err_file); 1724 if (err_file == stderr) 1725 break; 1726 err_file = stderr; 1727 } 1728 } 1729 1730 /*- 1731 * Fatal -- 1732 * Produce a Fatal error message. If jobs are running, waits for them 1733 * to finish. 1734 * 1735 * Results: 1736 * None 1737 * 1738 * Side Effects: 1739 * The program exits 1740 */ 1741 /* VARARGS */ 1742 void 1743 Fatal(const char *fmt, ...) 1744 { 1745 va_list ap; 1746 1747 va_start(ap, fmt); 1748 if (jobsRunning) 1749 Job_Wait(); 1750 1751 (void)fflush(stdout); 1752 (void)vfprintf(stderr, fmt, ap); 1753 va_end(ap); 1754 (void)fprintf(stderr, "\n"); 1755 (void)fflush(stderr); 1756 1757 PrintOnError(NULL, NULL); 1758 1759 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1760 Targ_PrintGraph(2); 1761 Trace_Log(MAKEERROR, 0); 1762 exit(2); /* Not 1 so -q can distinguish error */ 1763 } 1764 1765 /* 1766 * Punt -- 1767 * Major exception once jobs are being created. Kills all jobs, prints 1768 * a message and exits. 1769 * 1770 * Results: 1771 * None 1772 * 1773 * Side Effects: 1774 * All children are killed indiscriminately and the program Lib_Exits 1775 */ 1776 /* VARARGS */ 1777 void 1778 Punt(const char *fmt, ...) 1779 { 1780 va_list ap; 1781 1782 va_start(ap, fmt); 1783 (void)fflush(stdout); 1784 (void)fprintf(stderr, "%s: ", progname); 1785 (void)vfprintf(stderr, fmt, ap); 1786 va_end(ap); 1787 (void)fprintf(stderr, "\n"); 1788 (void)fflush(stderr); 1789 1790 PrintOnError(NULL, NULL); 1791 1792 DieHorribly(); 1793 } 1794 1795 /*- 1796 * DieHorribly -- 1797 * Exit without giving a message. 1798 * 1799 * Results: 1800 * None 1801 * 1802 * Side Effects: 1803 * A big one... 1804 */ 1805 void 1806 DieHorribly(void) 1807 { 1808 if (jobsRunning) 1809 Job_AbortAll(); 1810 if (DEBUG(GRAPH2)) 1811 Targ_PrintGraph(2); 1812 Trace_Log(MAKEERROR, 0); 1813 exit(2); /* Not 1, so -q can distinguish error */ 1814 } 1815 1816 /* 1817 * Finish -- 1818 * Called when aborting due to errors in child shell to signal 1819 * abnormal exit. 1820 * 1821 * Results: 1822 * None 1823 * 1824 * Side Effects: 1825 * The program exits 1826 */ 1827 void 1828 Finish(int errors) 1829 /* number of errors encountered in Make_Make */ 1830 { 1831 if (dieQuietly(NULL, -1)) 1832 exit(2); 1833 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1834 } 1835 1836 /* 1837 * eunlink -- 1838 * Remove a file carefully, avoiding directories. 1839 */ 1840 int 1841 eunlink(const char *file) 1842 { 1843 struct stat st; 1844 1845 if (lstat(file, &st) == -1) 1846 return -1; 1847 1848 if (S_ISDIR(st.st_mode)) { 1849 errno = EISDIR; 1850 return -1; 1851 } 1852 return unlink(file); 1853 } 1854 1855 /* 1856 * execError -- 1857 * Print why exec failed, avoiding stdio. 1858 */ 1859 void 1860 execError(const char *af, const char *av) 1861 { 1862 #ifdef USE_IOVEC 1863 int i = 0; 1864 struct iovec iov[8]; 1865 #define IOADD(s) \ 1866 (void)(iov[i].iov_base = UNCONST(s), \ 1867 iov[i].iov_len = strlen(iov[i].iov_base), \ 1868 i++) 1869 #else 1870 #define IOADD(void)write(2, s, strlen(s)) 1871 #endif 1872 1873 IOADD(progname); 1874 IOADD(": "); 1875 IOADD(af); 1876 IOADD("("); 1877 IOADD(av); 1878 IOADD(") failed ("); 1879 IOADD(strerror(errno)); 1880 IOADD(")\n"); 1881 1882 #ifdef USE_IOVEC 1883 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1884 continue; 1885 #endif 1886 } 1887 1888 /* 1889 * usage -- 1890 * exit with usage message 1891 */ 1892 static void 1893 usage(void) 1894 { 1895 char *p; 1896 if ((p = strchr(progname, '[')) != NULL) 1897 *p = '\0'; 1898 1899 (void)fprintf(stderr, 1900 "usage: %s [-BeikNnqrstWwX] \n" 1901 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1902 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1903 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1904 progname); 1905 exit(2); 1906 } 1907 1908 /* 1909 * realpath(3) can get expensive, cache results... 1910 */ 1911 static GNode *cached_realpaths = NULL; 1912 1913 static GNode * 1914 get_cached_realpaths(void) 1915 { 1916 1917 if (!cached_realpaths) { 1918 cached_realpaths = Targ_NewGN("Realpath"); 1919 #ifndef DEBUG_REALPATH_CACHE 1920 cached_realpaths->flags = INTERNAL; 1921 #endif 1922 } 1923 1924 return cached_realpaths; 1925 } 1926 1927 /* purge any relative paths */ 1928 static void 1929 purge_cached_realpaths(void) 1930 { 1931 GNode *cache = get_cached_realpaths(); 1932 Hash_Entry *he, *nhe; 1933 Hash_Search hs; 1934 1935 he = Hash_EnumFirst(&cache->context, &hs); 1936 while (he) { 1937 nhe = Hash_EnumNext(&hs); 1938 if (he->name[0] != '/') { 1939 if (DEBUG(DIR)) 1940 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1941 Hash_DeleteEntry(&cache->context, he); 1942 } 1943 he = nhe; 1944 } 1945 } 1946 1947 char * 1948 cached_realpath(const char *pathname, char *resolved) 1949 { 1950 GNode *cache; 1951 const char *rp; 1952 char *cp; 1953 1954 if (!pathname || !pathname[0]) 1955 return NULL; 1956 1957 cache = get_cached_realpaths(); 1958 1959 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1960 /* a hit */ 1961 strncpy(resolved, rp, MAXPATHLEN); 1962 resolved[MAXPATHLEN - 1] = '\0'; 1963 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1964 Var_Set(pathname, rp, cache); 1965 } /* else should we negative-cache? */ 1966 1967 bmake_free(cp); 1968 return rp ? resolved : NULL; 1969 } 1970 1971 int 1972 PrintAddr(void *a, void *b) 1973 { 1974 printf("%lx ", (unsigned long) a); 1975 return b ? 0 : 0; 1976 } 1977 1978 1979 static int 1980 addErrorCMD(void *cmdp, void *gnp) 1981 { 1982 if (cmdp == NULL) 1983 return 1; /* stop */ 1984 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1985 return 0; 1986 } 1987 1988 /* 1989 * Return true if we should die without noise. 1990 * For example our failing child was a sub-make 1991 * or failure happend elsewhere. 1992 */ 1993 int 1994 dieQuietly(GNode *gn, int bf) 1995 { 1996 static int quietly = -1; 1997 1998 if (quietly < 0) { 1999 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2000 quietly = 0; 2001 else if (bf >= 0) 2002 quietly = bf; 2003 else 2004 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2005 } 2006 return quietly; 2007 } 2008 2009 void 2010 PrintOnError(GNode *gn, const char *s) 2011 { 2012 static GNode *en = NULL; 2013 const char *expr; 2014 char *cp; 2015 2016 if (DEBUG(HASH)) { 2017 Targ_Stats(); 2018 Var_Stats(); 2019 } 2020 2021 /* we generally want to keep quiet if a sub-make died */ 2022 if (dieQuietly(gn, -1)) 2023 return; 2024 2025 if (s) 2026 printf("%s", s); 2027 2028 printf("\n%s: stopped in %s\n", progname, curdir); 2029 2030 if (en) 2031 return; /* we've been here! */ 2032 if (gn) { 2033 /* 2034 * We can print this even if there is no .ERROR target. 2035 */ 2036 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2037 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2038 Lst_ForEach(gn->commands, addErrorCMD, gn); 2039 } 2040 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2041 cp = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2042 printf("%s", cp); 2043 free(cp); 2044 fflush(stdout); 2045 2046 /* 2047 * Finally, see if there is a .ERROR target, and run it if so. 2048 */ 2049 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2050 if (en) { 2051 en->type |= OP_SPECIAL; 2052 Compat_Make(en, en); 2053 } 2054 } 2055 2056 void 2057 Main_ExportMAKEFLAGS(Boolean first) 2058 { 2059 static Boolean once = TRUE; 2060 const char *expr; 2061 char *s; 2062 2063 if (once != first) 2064 return; 2065 once = FALSE; 2066 2067 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2068 s = Var_Subst(expr, VAR_CMD, VARE_WANTRES); 2069 if (s[0] != '\0') { 2070 #ifdef POSIX 2071 setenv("MAKEFLAGS", s, 1); 2072 #else 2073 setenv("MAKE", s, 1); 2074 #endif 2075 } 2076 } 2077 2078 char * 2079 getTmpdir(void) 2080 { 2081 static char *tmpdir = NULL; 2082 2083 if (!tmpdir) { 2084 struct stat st; 2085 2086 /* 2087 * Honor $TMPDIR but only if it is valid. 2088 * Ensure it ends with /. 2089 */ 2090 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2091 VARE_WANTRES); 2092 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2093 free(tmpdir); 2094 tmpdir = bmake_strdup(_PATH_TMP); 2095 } 2096 } 2097 return tmpdir; 2098 } 2099 2100 /* 2101 * Create and open a temp file using "pattern". 2102 * If "fnamep" is provided set it to a copy of the filename created. 2103 * Otherwise unlink the file once open. 2104 */ 2105 int 2106 mkTempFile(const char *pattern, char **fnamep) 2107 { 2108 static char *tmpdir = NULL; 2109 char tfile[MAXPATHLEN]; 2110 int fd; 2111 2112 if (!pattern) 2113 pattern = TMPPAT; 2114 if (!tmpdir) 2115 tmpdir = getTmpdir(); 2116 if (pattern[0] == '/') { 2117 snprintf(tfile, sizeof(tfile), "%s", pattern); 2118 } else { 2119 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2120 } 2121 if ((fd = mkstemp(tfile)) < 0) 2122 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2123 if (fnamep) { 2124 *fnamep = bmake_strdup(tfile); 2125 } else { 2126 unlink(tfile); /* we just want the descriptor */ 2127 } 2128 return fd; 2129 } 2130 2131 /* 2132 * Convert a string representation of a boolean. 2133 * Anything that looks like "No", "False", "Off", "0" etc, 2134 * is FALSE, otherwise TRUE. 2135 */ 2136 Boolean 2137 s2Boolean(const char *s, Boolean bf) 2138 { 2139 if (s) { 2140 switch(*s) { 2141 case '\0': /* not set - the default wins */ 2142 break; 2143 case '0': 2144 case 'F': 2145 case 'f': 2146 case 'N': 2147 case 'n': 2148 bf = FALSE; 2149 break; 2150 case 'O': 2151 case 'o': 2152 switch (s[1]) { 2153 case 'F': 2154 case 'f': 2155 bf = FALSE; 2156 break; 2157 default: 2158 bf = TRUE; 2159 break; 2160 } 2161 break; 2162 default: 2163 bf = TRUE; 2164 break; 2165 } 2166 } 2167 return bf; 2168 } 2169 2170 /* 2171 * Return a Boolean based on setting of a knob. 2172 * 2173 * If the knob is not set, the supplied default is the return value. 2174 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2175 * is FALSE, otherwise TRUE. 2176 */ 2177 Boolean 2178 getBoolean(const char *name, Boolean fallback) 2179 { 2180 char *expr = str_concat3("${", name, ":U:tl}"); 2181 char *value = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2182 Boolean res = s2Boolean(value, fallback); 2183 free(value); 2184 free(expr); 2185 return res; 2186 } 2187
Indexes created Wed Sep 24 15:09:51 GMT 2025