main.c revision 1.329
1 /* $NetBSD: main.c,v 1.329 2020/08/29 13:16:54 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 1.329 2020/08/29 13:16:54 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 1.329 2020/08/29 13:16:54 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 (!isalpha((unsigned char)*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 char **argv; /* Manufactured argument vector */ 694 size_t argc; /* Number of arguments in argv */ 695 char *args; /* Space used by the args */ 696 char *p1; 697 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 698 char *buf; 699 700 if (line == NULL) 701 return; 702 for (; *line == ' '; ++line) 703 continue; 704 if (!*line) 705 return; 706 707 buf = str_concat3(argv0, " ", line); 708 free(p1); 709 710 argv = brk_string(buf, TRUE, &argc, &args); 711 if (argv == NULL) { 712 Error("Unterminated quoted string [%s]", buf); 713 free(buf); 714 return; 715 } 716 free(buf); 717 MainParseArgs((int)argc, argv); 718 719 free(args); 720 free(argv); 721 } 722 723 Boolean 724 Main_SetObjdir(const char *fmt, ...) 725 { 726 struct stat sb; 727 char *path; 728 char buf[MAXPATHLEN + 1]; 729 char buf2[MAXPATHLEN + 1]; 730 Boolean rc = FALSE; 731 va_list ap; 732 733 va_start(ap, fmt); 734 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 735 va_end(ap); 736 737 if (path[0] != '/') { 738 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 739 path = buf2; 740 } 741 742 /* look for the directory and try to chdir there */ 743 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 744 if (chdir(path)) { 745 (void)fprintf(stderr, "make warning: %s: %s.\n", 746 path, strerror(errno)); 747 } else { 748 snprintf(objdir, sizeof objdir, "%s", path); 749 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 750 setenv("PWD", objdir, 1); 751 Dir_InitDot(); 752 purge_cached_realpaths(); 753 rc = TRUE; 754 if (enterFlag && strcmp(objdir, curdir) != 0) 755 enterFlagObj = TRUE; 756 } 757 } 758 759 return rc; 760 } 761 762 static Boolean 763 Main_SetVarObjdir(const char *var, const char *suffix) 764 { 765 char *path_freeIt; 766 const char *path = Var_Value(var, VAR_CMD, &path_freeIt); 767 const char *xpath; 768 char *xpath_freeIt; 769 770 if (path == NULL || path[0] == '\0') { 771 bmake_free(path_freeIt); 772 return FALSE; 773 } 774 775 /* expand variable substitutions */ 776 xpath = path; 777 xpath_freeIt = NULL; 778 if (strchr(path, '$') != 0) 779 xpath = xpath_freeIt = Var_Subst(path, VAR_GLOBAL, 780 VARE_WANTRES); 781 782 (void)Main_SetObjdir("%s%s", xpath, suffix); 783 784 bmake_free(xpath_freeIt); 785 bmake_free(path_freeIt); 786 return TRUE; 787 } 788 789 /* Read and parse the makefile. 790 * Return TRUE if reading the makefile succeeded, for Lst_Find. */ 791 static Boolean 792 ReadMakefileSucceeded(const void *fname, const void *unused) 793 { 794 return ReadMakefile(fname) == 0; 795 } 796 797 /* Read and parse the makefile. 798 * Return TRUE if reading the makefile failed, for Lst_Find. */ 799 static Boolean 800 ReadMakefileFailed(const void *fname, const void *unused) 801 { 802 return ReadMakefile(fname) != 0; 803 } 804 805 int 806 str2Lst_Append(Lst lp, char *str, const char *sep) 807 { 808 char *cp; 809 int n; 810 811 if (!sep) 812 sep = " \t"; 813 814 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 815 Lst_Append(lp, cp); 816 n++; 817 } 818 return n; 819 } 820 821 #ifdef SIGINFO 822 /*ARGSUSED*/ 823 static void 824 siginfo(int signo MAKE_ATTR_UNUSED) 825 { 826 char dir[MAXPATHLEN]; 827 char str[2 * MAXPATHLEN]; 828 int len; 829 if (getcwd(dir, sizeof(dir)) == NULL) 830 return; 831 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 832 if (len > 0) 833 (void)write(STDERR_FILENO, str, (size_t)len); 834 } 835 #endif 836 837 /* 838 * Allow makefiles some control over the mode we run in. 839 */ 840 void 841 MakeMode(const char *mode) 842 { 843 char *mode_freeIt = NULL; 844 845 if (mode == NULL) 846 mode = mode_freeIt = Var_Subst("${" MAKE_MODE ":tl}", 847 VAR_GLOBAL, VARE_WANTRES); 848 849 if (mode[0] != '\0') { 850 if (strstr(mode, "compat")) { 851 compatMake = TRUE; 852 forceJobs = FALSE; 853 } 854 #if USE_META 855 if (strstr(mode, "meta")) 856 meta_mode_init(mode); 857 #endif 858 } 859 860 free(mode_freeIt); 861 } 862 863 static void 864 doPrintVars(void) 865 { 866 LstNode ln; 867 Boolean expandVars; 868 869 if (printVars == EXPAND_VARS) 870 expandVars = TRUE; 871 else if (debugVflag) 872 expandVars = FALSE; 873 else 874 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 875 876 for (ln = Lst_First(variables); ln != NULL; ln = LstNode_Next(ln)) { 877 char *var = Lst_Datum(ln); 878 const char *value; 879 char *p1; 880 881 if (strchr(var, '$')) { 882 value = p1 = Var_Subst(var, VAR_GLOBAL, VARE_WANTRES); 883 } else if (expandVars) { 884 char tmp[128]; 885 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 886 887 if (len >= (int)sizeof(tmp)) 888 Fatal("%s: variable name too big: %s", 889 progname, var); 890 value = p1 = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 891 } else { 892 value = Var_Value(var, VAR_GLOBAL, &p1); 893 } 894 printf("%s\n", value ? value : ""); 895 bmake_free(p1); 896 } 897 } 898 899 static Boolean 900 runTargets(void) 901 { 902 Lst targs; /* target nodes to create -- passed to Make_Init */ 903 Boolean outOfDate; /* FALSE if all targets up to date */ 904 905 /* 906 * Have now read the entire graph and need to make a list of 907 * targets to create. If none was given on the command line, 908 * we consult the parsing module to find the main target(s) 909 * to create. 910 */ 911 if (Lst_IsEmpty(create)) 912 targs = Parse_MainName(); 913 else 914 targs = Targ_FindList(create, TARG_CREATE); 915 916 if (!compatMake) { 917 /* 918 * Initialize job module before traversing the graph 919 * now that any .BEGIN and .END targets have been read. 920 * This is done only if the -q flag wasn't given 921 * (to prevent the .BEGIN from being executed should 922 * it exist). 923 */ 924 if (!queryFlag) { 925 Job_Init(); 926 jobsRunning = TRUE; 927 } 928 929 /* Traverse the graph, checking on all the targets */ 930 outOfDate = Make_Run(targs); 931 } else { 932 /* 933 * Compat_Init will take care of creating all the 934 * targets as well as initializing the module. 935 */ 936 Compat_Run(targs); 937 outOfDate = FALSE; 938 } 939 Lst_Free(targs); 940 return outOfDate; 941 } 942 943 /*- 944 * main -- 945 * The main function, for obvious reasons. Initializes variables 946 * and a few modules, then parses the arguments give it in the 947 * environment and on the command line. Reads the system makefile 948 * followed by either Makefile, makefile or the file given by the 949 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 950 * flags it has received by then uses either the Make or the Compat 951 * module to create the initial list of targets. 952 * 953 * Results: 954 * If -q was given, exits -1 if anything was out-of-date. Else it exits 955 * 0. 956 * 957 * Side Effects: 958 * The program exits when done. Targets are created. etc. etc. etc. 959 */ 960 int 961 main(int argc, char **argv) 962 { 963 Boolean outOfDate; /* FALSE if all targets up to date */ 964 struct stat sb, sa; 965 char *p1, *path; 966 char mdpath[MAXPATHLEN]; 967 const char *machine = getenv("MACHINE"); 968 const char *machine_arch = getenv("MACHINE_ARCH"); 969 char *syspath = getenv("MAKESYSPATH"); 970 Lst sysMkPath; /* Path of sys.mk */ 971 char *cp = NULL, *start; 972 /* avoid faults on read-only strings */ 973 static char defsyspath[] = _PATH_DEFSYSPATH; 974 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 975 struct timeval rightnow; /* to initialize random seed */ 976 struct utsname utsname; 977 978 /* default to writing debug to stderr */ 979 debug_file = stderr; 980 981 #ifdef SIGINFO 982 (void)bmake_signal(SIGINFO, siginfo); 983 #endif 984 /* 985 * Set the seed to produce a different random sequence 986 * on each program execution. 987 */ 988 gettimeofday(&rightnow, NULL); 989 srandom(rightnow.tv_sec + rightnow.tv_usec); 990 991 if ((progname = strrchr(argv[0], '/')) != NULL) 992 progname++; 993 else 994 progname = argv[0]; 995 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 996 /* 997 * get rid of resource limit on file descriptors 998 */ 999 { 1000 struct rlimit rl; 1001 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1002 rl.rlim_cur != rl.rlim_max) { 1003 rl.rlim_cur = rl.rlim_max; 1004 (void)setrlimit(RLIMIT_NOFILE, &rl); 1005 } 1006 } 1007 #endif 1008 1009 if (uname(&utsname) == -1) { 1010 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1011 strerror(errno)); 1012 exit(2); 1013 } 1014 1015 /* 1016 * Get the name of this type of MACHINE from utsname 1017 * so we can share an executable for similar machines. 1018 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1019 * 1020 * Note that both MACHINE and MACHINE_ARCH are decided at 1021 * run-time. 1022 */ 1023 if (!machine) { 1024 #ifdef MAKE_NATIVE 1025 machine = utsname.machine; 1026 #else 1027 #ifdef MAKE_MACHINE 1028 machine = MAKE_MACHINE; 1029 #else 1030 machine = "unknown"; 1031 #endif 1032 #endif 1033 } 1034 1035 if (!machine_arch) { 1036 #ifdef MAKE_NATIVE 1037 static char machine_arch_buf[sizeof(utsname.machine)]; 1038 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1039 size_t len = sizeof(machine_arch_buf); 1040 1041 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1042 &len, NULL, 0) < 0) { 1043 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1044 strerror(errno)); 1045 exit(2); 1046 } 1047 1048 machine_arch = machine_arch_buf; 1049 #else 1050 #ifndef MACHINE_ARCH 1051 #ifdef MAKE_MACHINE_ARCH 1052 machine_arch = MAKE_MACHINE_ARCH; 1053 #else 1054 machine_arch = "unknown"; 1055 #endif 1056 #else 1057 machine_arch = MACHINE_ARCH; 1058 #endif 1059 #endif 1060 } 1061 1062 myPid = getpid(); /* remember this for vFork() */ 1063 1064 /* 1065 * Just in case MAKEOBJDIR wants us to do something tricky. 1066 */ 1067 Var_Init(); /* Initialize the lists of variables for 1068 * parsing arguments */ 1069 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1070 Var_Set("MACHINE", machine, VAR_GLOBAL); 1071 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1072 #ifdef MAKE_VERSION 1073 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1074 #endif 1075 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1076 /* 1077 * This is the traditional preference for makefiles. 1078 */ 1079 #ifndef MAKEFILE_PREFERENCE_LIST 1080 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1081 #endif 1082 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1083 VAR_GLOBAL); 1084 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1085 1086 create = Lst_Init(); 1087 makefiles = Lst_Init(); 1088 printVars = 0; 1089 debugVflag = FALSE; 1090 variables = Lst_Init(); 1091 beSilent = FALSE; /* Print commands as executed */ 1092 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1093 noExecute = FALSE; /* Execute all commands */ 1094 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1095 keepgoing = FALSE; /* Stop on error */ 1096 allPrecious = FALSE; /* Remove targets when interrupted */ 1097 deleteOnError = FALSE; /* Historical default behavior */ 1098 queryFlag = FALSE; /* This is not just a check-run */ 1099 noBuiltins = FALSE; /* Read the built-in rules */ 1100 touchFlag = FALSE; /* Actually update targets */ 1101 debug = 0; /* No debug verbosity, please. */ 1102 jobsRunning = FALSE; 1103 1104 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1105 maxJobTokens = maxJobs; 1106 compatMake = FALSE; /* No compat mode */ 1107 ignorePWD = FALSE; 1108 1109 /* 1110 * Initialize the parsing, directory and variable modules to prepare 1111 * for the reading of inclusion paths and variable settings on the 1112 * command line 1113 */ 1114 1115 /* 1116 * Initialize various variables. 1117 * MAKE also gets this name, for compatibility 1118 * .MAKEFLAGS gets set to the empty string just in case. 1119 * MFLAGS also gets initialized empty, for compatibility. 1120 */ 1121 Parse_Init(); 1122 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1123 /* 1124 * Leave alone if it is an absolute path, or if it does 1125 * not contain a '/' in which case we need to find it in 1126 * the path, like execvp(3) and the shells do. 1127 */ 1128 p1 = argv[0]; 1129 } else { 1130 /* 1131 * A relative path, canonicalize it. 1132 */ 1133 p1 = cached_realpath(argv[0], mdpath); 1134 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1135 p1 = argv[0]; /* realpath failed */ 1136 } 1137 } 1138 Var_Set("MAKE", p1, VAR_GLOBAL); 1139 Var_Set(".MAKE", p1, VAR_GLOBAL); 1140 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1141 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1142 Var_Set("MFLAGS", "", VAR_GLOBAL); 1143 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1144 /* some makefiles need to know this */ 1145 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1146 1147 /* 1148 * Set some other useful macros 1149 */ 1150 { 1151 char tmp[64], *ep; 1152 1153 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1154 if (makelevel < 0) 1155 makelevel = 0; 1156 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1157 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1158 snprintf(tmp, sizeof(tmp), "%u", myPid); 1159 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1160 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1161 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1162 } 1163 if (makelevel > 0) { 1164 char pn[1024]; 1165 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1166 progname = bmake_strdup(pn); 1167 } 1168 1169 #ifdef USE_META 1170 meta_init(); 1171 #endif 1172 Dir_Init(); 1173 1174 /* 1175 * First snag any flags out of the MAKE environment variable. 1176 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1177 * in a different format). 1178 */ 1179 #ifdef POSIX 1180 p1 = explode(getenv("MAKEFLAGS")); 1181 Main_ParseArgLine(p1); 1182 free(p1); 1183 #else 1184 Main_ParseArgLine(getenv("MAKE")); 1185 #endif 1186 1187 /* 1188 * Find where we are (now). 1189 * We take care of PWD for the automounter below... 1190 */ 1191 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1192 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1193 progname, strerror(errno)); 1194 exit(2); 1195 } 1196 1197 MainParseArgs(argc, argv); 1198 1199 if (enterFlag) 1200 printf("%s: Entering directory `%s'\n", progname, curdir); 1201 1202 /* 1203 * Verify that cwd is sane. 1204 */ 1205 if (stat(curdir, &sa) == -1) { 1206 (void)fprintf(stderr, "%s: %s: %s.\n", 1207 progname, curdir, strerror(errno)); 1208 exit(2); 1209 } 1210 1211 /* 1212 * All this code is so that we know where we are when we start up 1213 * on a different machine with pmake. 1214 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1215 * since the value of curdir can vary depending on how we got 1216 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1217 * or via subdir.mk in which case its likely a shell which does 1218 * not provide it. 1219 * So, to stop it breaking this case only, we ignore PWD if 1220 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1221 */ 1222 #ifndef NO_PWD_OVERRIDE 1223 if (!ignorePWD) { 1224 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1225 1226 if ((pwd = getenv("PWD")) != NULL && 1227 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1228 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1229 VAR_CMD, &ptmp2); 1230 1231 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1232 if (stat(pwd, &sb) == 0 && 1233 sa.st_ino == sb.st_ino && 1234 sa.st_dev == sb.st_dev) 1235 (void)strncpy(curdir, pwd, MAXPATHLEN); 1236 } 1237 } 1238 bmake_free(ptmp1); 1239 bmake_free(ptmp2); 1240 } 1241 #endif 1242 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1243 1244 /* 1245 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1246 * MAKEOBJDIR is set in the environment, try only that value 1247 * and fall back to .CURDIR if it does not exist. 1248 * 1249 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1250 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1251 * of these paths exist, just use .CURDIR. 1252 */ 1253 Dir_InitDir(curdir); 1254 (void)Main_SetObjdir("%s", curdir); 1255 1256 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1257 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1258 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1259 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1260 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1261 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1262 1263 /* 1264 * Initialize archive, target and suffix modules in preparation for 1265 * parsing the makefile(s) 1266 */ 1267 Arch_Init(); 1268 Targ_Init(); 1269 Suff_Init(); 1270 Trace_Init(tracefile); 1271 1272 DEFAULT = NULL; 1273 (void)time(&now); 1274 1275 Trace_Log(MAKESTART, NULL); 1276 1277 /* 1278 * Set up the .TARGETS variable to contain the list of targets to be 1279 * created. If none specified, make the variable empty -- the parser 1280 * will fill the thing in with the default or .MAIN target. 1281 */ 1282 if (!Lst_IsEmpty(create)) { 1283 LstNode ln; 1284 1285 for (ln = Lst_First(create); ln != NULL; ln = LstNode_Next(ln)) { 1286 char *name = Lst_Datum(ln); 1287 Var_Append(".TARGETS", name, VAR_GLOBAL); 1288 } 1289 } else 1290 Var_Set(".TARGETS", "", VAR_GLOBAL); 1291 1292 1293 /* 1294 * If no user-supplied system path was given (through the -m option) 1295 * add the directories from the DEFSYSPATH (more than one may be given 1296 * as dir1:...:dirn) to the system include path. 1297 */ 1298 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1299 if (syspath == NULL || syspath[0] == '\0') 1300 syspath = defsyspath; 1301 else 1302 syspath = bmake_strdup(syspath); 1303 1304 for (start = syspath; *start != '\0'; start = cp) { 1305 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1306 continue; 1307 if (*cp == ':') { 1308 *cp++ = '\0'; 1309 } 1310 /* look for magic parent directory search string */ 1311 if (strncmp(".../", start, 4) != 0) { 1312 (void)Dir_AddDir(defIncPath, start); 1313 } else { 1314 if (Dir_FindHereOrAbove(curdir, start+4, 1315 found_path, sizeof(found_path))) { 1316 (void)Dir_AddDir(defIncPath, found_path); 1317 } 1318 } 1319 } 1320 if (syspath != defsyspath) 1321 free(syspath); 1322 1323 /* 1324 * Read in the built-in rules first, followed by the specified 1325 * makefiles, or the default makefile and Makefile, in that order, 1326 * if no makefiles were given on the command line. 1327 */ 1328 if (!noBuiltins) { 1329 LstNode ln; 1330 1331 sysMkPath = Lst_Init(); 1332 Dir_Expand(_PATH_DEFSYSMK, 1333 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1334 sysMkPath); 1335 if (Lst_IsEmpty(sysMkPath)) 1336 Fatal("%s: no system rules (%s).", progname, 1337 _PATH_DEFSYSMK); 1338 ln = Lst_Find(sysMkPath, ReadMakefileSucceeded, NULL); 1339 if (ln == NULL) 1340 Fatal("%s: cannot open %s.", progname, 1341 (char *)Lst_Datum(Lst_First(sysMkPath))); 1342 } 1343 1344 if (!Lst_IsEmpty(makefiles)) { 1345 LstNode ln; 1346 1347 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1348 if (ln != NULL) 1349 Fatal("%s: cannot open %s.", progname, 1350 (char *)Lst_Datum(ln)); 1351 } else { 1352 p1 = Var_Subst("${" MAKEFILE_PREFERENCE "}", 1353 VAR_CMD, VARE_WANTRES); 1354 (void)str2Lst_Append(makefiles, p1, NULL); 1355 (void)Lst_Find(makefiles, ReadMakefileSucceeded, NULL); 1356 free(p1); 1357 } 1358 1359 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1360 if (!noBuiltins || !printVars) { 1361 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE:T}", 1362 VAR_CMD, VARE_WANTRES); 1363 doing_depend = TRUE; 1364 (void)ReadMakefile(makeDependfile); 1365 doing_depend = FALSE; 1366 } 1367 1368 if (enterFlagObj) 1369 printf("%s: Entering directory `%s'\n", progname, objdir); 1370 1371 MakeMode(NULL); 1372 1373 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1374 bmake_free(p1); 1375 1376 if (!forceJobs && !compatMake && 1377 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1378 char *value; 1379 int n; 1380 1381 value = Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES); 1382 n = strtol(value, NULL, 0); 1383 if (n < 1) { 1384 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1385 progname); 1386 exit(1); 1387 } 1388 if (n != maxJobs) { 1389 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1390 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1391 } 1392 maxJobs = n; 1393 maxJobTokens = maxJobs; 1394 forceJobs = TRUE; 1395 free(value); 1396 } 1397 1398 /* 1399 * Be compatible if user did not specify -j and did not explicitly 1400 * turned compatibility on 1401 */ 1402 if (!compatMake && !forceJobs) { 1403 compatMake = TRUE; 1404 } 1405 1406 if (!compatMake) 1407 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1408 if (DEBUG(JOB)) 1409 fprintf(debug_file, 1410 "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1411 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1412 1413 if (!printVars) 1414 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1415 1416 1417 /* 1418 * For compatibility, look at the directories in the VPATH variable 1419 * and add them to the search path, if the variable is defined. The 1420 * variable's value is in the same format as the PATH envariable, i.e. 1421 * <directory>:<directory>:<directory>... 1422 */ 1423 if (Var_Exists("VPATH", VAR_CMD)) { 1424 char *vpath, savec; 1425 /* 1426 * GCC stores string constants in read-only memory, but 1427 * Var_Subst will want to write this thing, so store it 1428 * in an array 1429 */ 1430 static char VPATH[] = "${VPATH}"; 1431 1432 vpath = Var_Subst(VPATH, VAR_CMD, VARE_WANTRES); 1433 path = vpath; 1434 do { 1435 /* skip to end of directory */ 1436 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1437 continue; 1438 /* Save terminator character so know when to stop */ 1439 savec = *cp; 1440 *cp = '\0'; 1441 /* Add directory to search path */ 1442 (void)Dir_AddDir(dirSearchPath, path); 1443 *cp = savec; 1444 path = cp + 1; 1445 } while (savec == ':'); 1446 free(vpath); 1447 } 1448 1449 /* 1450 * Now that all search paths have been read for suffixes et al, it's 1451 * time to add the default search path to their lists... 1452 */ 1453 Suff_DoPaths(); 1454 1455 /* 1456 * Propagate attributes through :: dependency lists. 1457 */ 1458 Targ_Propagate(); 1459 1460 /* print the initial graph, if the user requested it */ 1461 if (DEBUG(GRAPH1)) 1462 Targ_PrintGraph(1); 1463 1464 /* print the values of any variables requested by the user */ 1465 if (printVars) { 1466 doPrintVars(); 1467 outOfDate = FALSE; 1468 } else { 1469 outOfDate = runTargets(); 1470 } 1471 1472 #ifdef CLEANUP 1473 Lst_Free(variables); 1474 Lst_Free(makefiles); 1475 Lst_Destroy(create, free); 1476 #endif 1477 1478 /* print the graph now it's been processed if the user requested it */ 1479 if (DEBUG(GRAPH2)) 1480 Targ_PrintGraph(2); 1481 1482 Trace_Log(MAKEEND, 0); 1483 1484 if (enterFlagObj) 1485 printf("%s: Leaving directory `%s'\n", progname, objdir); 1486 if (enterFlag) 1487 printf("%s: Leaving directory `%s'\n", progname, curdir); 1488 1489 #ifdef USE_META 1490 meta_finish(); 1491 #endif 1492 Suff_End(); 1493 Targ_End(); 1494 Arch_End(); 1495 Var_End(); 1496 Parse_End(); 1497 Dir_End(); 1498 Job_End(); 1499 Trace_End(); 1500 1501 return outOfDate ? 1 : 0; 1502 } 1503 1504 /* Open and parse the given makefile, with all its side effects. 1505 * 1506 * Results: 1507 * 0 if ok. -1 if couldn't open file. 1508 */ 1509 static int 1510 ReadMakefile(const char *fname) 1511 { 1512 int fd; 1513 char *name, *path = NULL; 1514 1515 if (!strcmp(fname, "-")) { 1516 Parse_File(NULL /*stdin*/, -1); 1517 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1518 } else { 1519 /* if we've chdir'd, rebuild the path name */ 1520 if (strcmp(curdir, objdir) && *fname != '/') { 1521 path = str_concat3(curdir, "/", fname); 1522 fd = open(path, O_RDONLY); 1523 if (fd != -1) { 1524 fname = path; 1525 goto found; 1526 } 1527 free(path); 1528 1529 /* If curdir failed, try objdir (ala .depend) */ 1530 path = str_concat3(objdir, "/", fname); 1531 fd = open(path, O_RDONLY); 1532 if (fd != -1) { 1533 fname = path; 1534 goto found; 1535 } 1536 } else { 1537 fd = open(fname, O_RDONLY); 1538 if (fd != -1) 1539 goto found; 1540 } 1541 /* look in -I and system include directories. */ 1542 name = Dir_FindFile(fname, parseIncPath); 1543 if (!name) 1544 name = Dir_FindFile(fname, 1545 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1546 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1547 free(name); 1548 free(path); 1549 return -1; 1550 } 1551 fname = name; 1552 /* 1553 * set the MAKEFILE variable desired by System V fans -- the 1554 * placement of the setting here means it gets set to the last 1555 * makefile specified, as it is set by SysV make. 1556 */ 1557 found: 1558 if (!doing_depend) 1559 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1560 Parse_File(fname, fd); 1561 } 1562 free(path); 1563 return 0; 1564 } 1565 1566 1567 1568 /*- 1569 * Cmd_Exec -- 1570 * Execute the command in cmd, and return the output of that command 1571 * in a string. In the output, newlines are replaced with spaces. 1572 * 1573 * Results: 1574 * A string containing the output of the command, or the empty string. 1575 * *errfmt returns a format string describing the command failure, 1576 * if any, using a single %s conversion specification. 1577 * 1578 * Side Effects: 1579 * The string must be freed by the caller. 1580 */ 1581 char * 1582 Cmd_Exec(const char *cmd, const char **errfmt) 1583 { 1584 const char *args[4]; /* Args for invoking the shell */ 1585 int fds[2]; /* Pipe streams */ 1586 int cpid; /* Child PID */ 1587 int pid; /* PID from wait() */ 1588 int status; /* command exit status */ 1589 Buffer buf; /* buffer to store the result */ 1590 ssize_t bytes_read; 1591 char *res; /* result */ 1592 size_t res_len; 1593 char *cp; 1594 int savederr; /* saved errno */ 1595 1596 *errfmt = NULL; 1597 1598 if (!shellName) 1599 Shell_Init(); 1600 /* 1601 * Set up arguments for shell 1602 */ 1603 args[0] = shellName; 1604 args[1] = "-c"; 1605 args[2] = cmd; 1606 args[3] = NULL; 1607 1608 /* 1609 * Open a pipe for fetching its output 1610 */ 1611 if (pipe(fds) == -1) { 1612 *errfmt = "Couldn't create pipe for \"%s\""; 1613 goto bad; 1614 } 1615 1616 /* 1617 * Fork 1618 */ 1619 switch (cpid = vFork()) { 1620 case 0: 1621 /* 1622 * Close input side of pipe 1623 */ 1624 (void)close(fds[0]); 1625 1626 /* 1627 * Duplicate the output stream to the shell's output, then 1628 * shut the extra thing down. Note we don't fetch the error 1629 * stream...why not? Why? 1630 */ 1631 (void)dup2(fds[1], 1); 1632 (void)close(fds[1]); 1633 1634 Var_ExportVars(); 1635 1636 (void)execv(shellPath, UNCONST(args)); 1637 _exit(1); 1638 /*NOTREACHED*/ 1639 1640 case -1: 1641 *errfmt = "Couldn't exec \"%s\""; 1642 goto bad; 1643 1644 default: 1645 /* 1646 * No need for the writing half 1647 */ 1648 (void)close(fds[1]); 1649 1650 savederr = 0; 1651 Buf_Init(&buf, 0); 1652 1653 do { 1654 char result[BUFSIZ]; 1655 bytes_read = read(fds[0], result, sizeof(result)); 1656 if (bytes_read > 0) 1657 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1658 } 1659 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1660 if (bytes_read == -1) 1661 savederr = errno; 1662 1663 /* 1664 * Close the input side of the pipe. 1665 */ 1666 (void)close(fds[0]); 1667 1668 /* 1669 * Wait for the process to exit. 1670 */ 1671 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1672 JobReapChild(pid, status, FALSE); 1673 continue; 1674 } 1675 res_len = Buf_Size(&buf); 1676 res = Buf_Destroy(&buf, FALSE); 1677 1678 if (savederr != 0) 1679 *errfmt = "Couldn't read shell's output for \"%s\""; 1680 1681 if (WIFSIGNALED(status)) 1682 *errfmt = "\"%s\" exited on a signal"; 1683 else if (WEXITSTATUS(status) != 0) 1684 *errfmt = "\"%s\" returned non-zero status"; 1685 1686 /* Convert newlines to spaces. A final newline is just stripped */ 1687 if (res_len > 0 && res[res_len - 1] == '\n') 1688 res[res_len - 1] = '\0'; 1689 for (cp = res; *cp != '\0'; cp++) 1690 if (*cp == '\n') 1691 *cp = ' '; 1692 break; 1693 } 1694 return res; 1695 bad: 1696 return bmake_strdup(""); 1697 } 1698 1699 /*- 1700 * Error -- 1701 * Print an error message given its format. 1702 * 1703 * Results: 1704 * None. 1705 * 1706 * Side Effects: 1707 * The message is printed. 1708 */ 1709 /* VARARGS */ 1710 void 1711 Error(const char *fmt, ...) 1712 { 1713 va_list ap; 1714 FILE *err_file; 1715 1716 err_file = debug_file; 1717 if (err_file == stdout) 1718 err_file = stderr; 1719 (void)fflush(stdout); 1720 for (;;) { 1721 va_start(ap, fmt); 1722 fprintf(err_file, "%s: ", progname); 1723 (void)vfprintf(err_file, fmt, ap); 1724 va_end(ap); 1725 (void)fprintf(err_file, "\n"); 1726 (void)fflush(err_file); 1727 if (err_file == stderr) 1728 break; 1729 err_file = stderr; 1730 } 1731 } 1732 1733 /*- 1734 * Fatal -- 1735 * Produce a Fatal error message. If jobs are running, waits for them 1736 * to finish. 1737 * 1738 * Results: 1739 * None 1740 * 1741 * Side Effects: 1742 * The program exits 1743 */ 1744 /* VARARGS */ 1745 void 1746 Fatal(const char *fmt, ...) 1747 { 1748 va_list ap; 1749 1750 va_start(ap, fmt); 1751 if (jobsRunning) 1752 Job_Wait(); 1753 1754 (void)fflush(stdout); 1755 (void)vfprintf(stderr, fmt, ap); 1756 va_end(ap); 1757 (void)fprintf(stderr, "\n"); 1758 (void)fflush(stderr); 1759 1760 PrintOnError(NULL, NULL); 1761 1762 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1763 Targ_PrintGraph(2); 1764 Trace_Log(MAKEERROR, 0); 1765 exit(2); /* Not 1 so -q can distinguish error */ 1766 } 1767 1768 /* 1769 * Punt -- 1770 * Major exception once jobs are being created. Kills all jobs, prints 1771 * a message and exits. 1772 * 1773 * Results: 1774 * None 1775 * 1776 * Side Effects: 1777 * All children are killed indiscriminately and the program Lib_Exits 1778 */ 1779 /* VARARGS */ 1780 void 1781 Punt(const char *fmt, ...) 1782 { 1783 va_list ap; 1784 1785 va_start(ap, fmt); 1786 (void)fflush(stdout); 1787 (void)fprintf(stderr, "%s: ", progname); 1788 (void)vfprintf(stderr, fmt, ap); 1789 va_end(ap); 1790 (void)fprintf(stderr, "\n"); 1791 (void)fflush(stderr); 1792 1793 PrintOnError(NULL, NULL); 1794 1795 DieHorribly(); 1796 } 1797 1798 /*- 1799 * DieHorribly -- 1800 * Exit without giving a message. 1801 * 1802 * Results: 1803 * None 1804 * 1805 * Side Effects: 1806 * A big one... 1807 */ 1808 void 1809 DieHorribly(void) 1810 { 1811 if (jobsRunning) 1812 Job_AbortAll(); 1813 if (DEBUG(GRAPH2)) 1814 Targ_PrintGraph(2); 1815 Trace_Log(MAKEERROR, 0); 1816 exit(2); /* Not 1, so -q can distinguish error */ 1817 } 1818 1819 /* 1820 * Finish -- 1821 * Called when aborting due to errors in child shell to signal 1822 * abnormal exit. 1823 * 1824 * Results: 1825 * None 1826 * 1827 * Side Effects: 1828 * The program exits 1829 */ 1830 void 1831 Finish(int errors) 1832 /* number of errors encountered in Make_Make */ 1833 { 1834 if (dieQuietly(NULL, -1)) 1835 exit(2); 1836 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1837 } 1838 1839 /* 1840 * eunlink -- 1841 * Remove a file carefully, avoiding directories. 1842 */ 1843 int 1844 eunlink(const char *file) 1845 { 1846 struct stat st; 1847 1848 if (lstat(file, &st) == -1) 1849 return -1; 1850 1851 if (S_ISDIR(st.st_mode)) { 1852 errno = EISDIR; 1853 return -1; 1854 } 1855 return unlink(file); 1856 } 1857 1858 /* 1859 * execError -- 1860 * Print why exec failed, avoiding stdio. 1861 */ 1862 void 1863 execError(const char *af, const char *av) 1864 { 1865 #ifdef USE_IOVEC 1866 int i = 0; 1867 struct iovec iov[8]; 1868 #define IOADD(s) \ 1869 (void)(iov[i].iov_base = UNCONST(s), \ 1870 iov[i].iov_len = strlen(iov[i].iov_base), \ 1871 i++) 1872 #else 1873 #define IOADD(void)write(2, s, strlen(s)) 1874 #endif 1875 1876 IOADD(progname); 1877 IOADD(": "); 1878 IOADD(af); 1879 IOADD("("); 1880 IOADD(av); 1881 IOADD(") failed ("); 1882 IOADD(strerror(errno)); 1883 IOADD(")\n"); 1884 1885 #ifdef USE_IOVEC 1886 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1887 continue; 1888 #endif 1889 } 1890 1891 /* 1892 * usage -- 1893 * exit with usage message 1894 */ 1895 static void 1896 usage(void) 1897 { 1898 char *p; 1899 if ((p = strchr(progname, '[')) != NULL) 1900 *p = '\0'; 1901 1902 (void)fprintf(stderr, 1903 "usage: %s [-BeikNnqrstWwX] \n" 1904 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1905 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1906 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1907 progname); 1908 exit(2); 1909 } 1910 1911 /* 1912 * realpath(3) can get expensive, cache results... 1913 */ 1914 static GNode *cached_realpaths = NULL; 1915 1916 static GNode * 1917 get_cached_realpaths(void) 1918 { 1919 1920 if (!cached_realpaths) { 1921 cached_realpaths = Targ_NewGN("Realpath"); 1922 #ifndef DEBUG_REALPATH_CACHE 1923 cached_realpaths->flags = INTERNAL; 1924 #endif 1925 } 1926 1927 return cached_realpaths; 1928 } 1929 1930 /* purge any relative paths */ 1931 static void 1932 purge_cached_realpaths(void) 1933 { 1934 GNode *cache = get_cached_realpaths(); 1935 Hash_Entry *he, *nhe; 1936 Hash_Search hs; 1937 1938 he = Hash_EnumFirst(&cache->context, &hs); 1939 while (he) { 1940 nhe = Hash_EnumNext(&hs); 1941 if (he->name[0] != '/') { 1942 if (DEBUG(DIR)) 1943 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1944 Hash_DeleteEntry(&cache->context, he); 1945 } 1946 he = nhe; 1947 } 1948 } 1949 1950 char * 1951 cached_realpath(const char *pathname, char *resolved) 1952 { 1953 GNode *cache; 1954 const char *rp; 1955 char *cp; 1956 1957 if (!pathname || !pathname[0]) 1958 return NULL; 1959 1960 cache = get_cached_realpaths(); 1961 1962 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1963 /* a hit */ 1964 strncpy(resolved, rp, MAXPATHLEN); 1965 resolved[MAXPATHLEN - 1] = '\0'; 1966 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1967 Var_Set(pathname, rp, cache); 1968 } /* else should we negative-cache? */ 1969 1970 bmake_free(cp); 1971 return rp ? resolved : NULL; 1972 } 1973 1974 int 1975 PrintAddr(void *a, void *b) 1976 { 1977 printf("%lx ", (unsigned long) a); 1978 return b ? 0 : 0; 1979 } 1980 1981 1982 static int 1983 addErrorCMD(void *cmdp, void *gnp) 1984 { 1985 if (cmdp == NULL) 1986 return 1; /* stop */ 1987 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1988 return 0; 1989 } 1990 1991 /* 1992 * Return true if we should die without noise. 1993 * For example our failing child was a sub-make 1994 * or failure happend elsewhere. 1995 */ 1996 int 1997 dieQuietly(GNode *gn, int bf) 1998 { 1999 static int quietly = -1; 2000 2001 if (quietly < 0) { 2002 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2003 quietly = 0; 2004 else if (bf >= 0) 2005 quietly = bf; 2006 else 2007 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2008 } 2009 return quietly; 2010 } 2011 2012 void 2013 PrintOnError(GNode *gn, const char *s) 2014 { 2015 static GNode *en = NULL; 2016 const char *expr; 2017 char *cp; 2018 2019 if (DEBUG(HASH)) { 2020 Targ_Stats(); 2021 Var_Stats(); 2022 } 2023 2024 /* we generally want to keep quiet if a sub-make died */ 2025 if (dieQuietly(gn, -1)) 2026 return; 2027 2028 if (s) 2029 printf("%s", s); 2030 2031 printf("\n%s: stopped in %s\n", progname, curdir); 2032 2033 if (en) 2034 return; /* we've been here! */ 2035 if (gn) { 2036 /* 2037 * We can print this even if there is no .ERROR target. 2038 */ 2039 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2040 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2041 Lst_ForEach(gn->commands, addErrorCMD, gn); 2042 } 2043 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2044 cp = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2045 printf("%s", cp); 2046 free(cp); 2047 fflush(stdout); 2048 2049 /* 2050 * Finally, see if there is a .ERROR target, and run it if so. 2051 */ 2052 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2053 if (en) { 2054 en->type |= OP_SPECIAL; 2055 Compat_Make(en, en); 2056 } 2057 } 2058 2059 void 2060 Main_ExportMAKEFLAGS(Boolean first) 2061 { 2062 static Boolean once = TRUE; 2063 const char *expr; 2064 char *s; 2065 2066 if (once != first) 2067 return; 2068 once = FALSE; 2069 2070 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2071 s = Var_Subst(expr, VAR_CMD, VARE_WANTRES); 2072 if (s[0] != '\0') { 2073 #ifdef POSIX 2074 setenv("MAKEFLAGS", s, 1); 2075 #else 2076 setenv("MAKE", s, 1); 2077 #endif 2078 } 2079 } 2080 2081 char * 2082 getTmpdir(void) 2083 { 2084 static char *tmpdir = NULL; 2085 2086 if (!tmpdir) { 2087 struct stat st; 2088 2089 /* 2090 * Honor $TMPDIR but only if it is valid. 2091 * Ensure it ends with /. 2092 */ 2093 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2094 VARE_WANTRES); 2095 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2096 free(tmpdir); 2097 tmpdir = bmake_strdup(_PATH_TMP); 2098 } 2099 } 2100 return tmpdir; 2101 } 2102 2103 /* 2104 * Create and open a temp file using "pattern". 2105 * If "fnamep" is provided set it to a copy of the filename created. 2106 * Otherwise unlink the file once open. 2107 */ 2108 int 2109 mkTempFile(const char *pattern, char **fnamep) 2110 { 2111 static char *tmpdir = NULL; 2112 char tfile[MAXPATHLEN]; 2113 int fd; 2114 2115 if (!pattern) 2116 pattern = TMPPAT; 2117 if (!tmpdir) 2118 tmpdir = getTmpdir(); 2119 if (pattern[0] == '/') { 2120 snprintf(tfile, sizeof(tfile), "%s", pattern); 2121 } else { 2122 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2123 } 2124 if ((fd = mkstemp(tfile)) < 0) 2125 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2126 if (fnamep) { 2127 *fnamep = bmake_strdup(tfile); 2128 } else { 2129 unlink(tfile); /* we just want the descriptor */ 2130 } 2131 return fd; 2132 } 2133 2134 /* 2135 * Convert a string representation of a boolean. 2136 * Anything that looks like "No", "False", "Off", "0" etc, 2137 * is FALSE, otherwise TRUE. 2138 */ 2139 Boolean 2140 s2Boolean(const char *s, Boolean bf) 2141 { 2142 if (s) { 2143 switch(*s) { 2144 case '\0': /* not set - the default wins */ 2145 break; 2146 case '0': 2147 case 'F': 2148 case 'f': 2149 case 'N': 2150 case 'n': 2151 bf = FALSE; 2152 break; 2153 case 'O': 2154 case 'o': 2155 switch (s[1]) { 2156 case 'F': 2157 case 'f': 2158 bf = FALSE; 2159 break; 2160 default: 2161 bf = TRUE; 2162 break; 2163 } 2164 break; 2165 default: 2166 bf = TRUE; 2167 break; 2168 } 2169 } 2170 return bf; 2171 } 2172 2173 /* 2174 * Return a Boolean based on setting of a knob. 2175 * 2176 * If the knob is not set, the supplied default is the return value. 2177 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2178 * is FALSE, otherwise TRUE. 2179 */ 2180 Boolean 2181 getBoolean(const char *name, Boolean fallback) 2182 { 2183 char *expr = str_concat3("${", name, ":U:tl}"); 2184 char *value = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2185 Boolean res = s2Boolean(value, fallback); 2186 free(value); 2187 free(expr); 2188 return res; 2189 } 2190
Indexes created Wed Sep 24 05:09:52 GMT 2025