main.c revision 1.321
1 /* $NetBSD: main.c,v 1.321 2020/08/29 07:05:12 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 1.321 2020/08/29 07:05:12 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 1.321 2020/08/29 07:05:12 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 int maxJobs; /* -j argument */ 163 static int maxJobTokens; /* -j argument */ 164 Boolean compatMake; /* -B argument */ 165 int debug; /* -d argument */ 166 Boolean debugVflag; /* -dV */ 167 Boolean noExecute; /* -n flag */ 168 Boolean noRecursiveExecute; /* -N flag */ 169 Boolean keepgoing; /* -k flag */ 170 Boolean queryFlag; /* -q flag */ 171 Boolean touchFlag; /* -t flag */ 172 Boolean enterFlag; /* -w flag */ 173 Boolean enterFlagObj; /* -w and objdir != srcdir */ 174 Boolean ignoreErrors; /* -i flag */ 175 Boolean beSilent; /* -s flag */ 176 Boolean oldVars; /* variable substitution style */ 177 Boolean checkEnvFirst; /* -e flag */ 178 Boolean parseWarnFatal; /* -W flag */ 179 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 180 Boolean varNoExportEnv; /* -X flag */ 181 Boolean doing_depend; /* Set while reading .depend */ 182 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 183 static const char * tracefile; 184 static void MainParseArgs(int, char **); 185 static int ReadMakefile(const void *, const void *); 186 static void usage(void) MAKE_ATTR_DEAD; 187 static void purge_cached_realpaths(void); 188 189 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 190 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 191 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 192 char *progname; /* the program name */ 193 char *makeDependfile; 194 pid_t myPid; 195 int makelevel; 196 197 FILE *debug_file; 198 199 Boolean forceJobs = FALSE; 200 201 extern Lst parseIncPath; 202 203 /* 204 * For compatibility with the POSIX version of MAKEFLAGS that includes 205 * all the options with out -, convert flags to -f -l -a -g -s. 206 */ 207 static char * 208 explode(const char *flags) 209 { 210 size_t len; 211 char *nf, *st; 212 const char *f; 213 214 if (flags == NULL) 215 return NULL; 216 217 for (f = flags; *f; f++) 218 if (!isalpha((unsigned char)*f)) 219 break; 220 221 if (*f) 222 return bmake_strdup(flags); 223 224 len = strlen(flags); 225 st = nf = bmake_malloc(len * 3 + 1); 226 while (*flags) { 227 *nf++ = '-'; 228 *nf++ = *flags++; 229 *nf++ = ' '; 230 } 231 *nf = '\0'; 232 return st; 233 } 234 235 static void 236 parse_debug_options(const char *argvalue) 237 { 238 const char *modules; 239 const char *mode; 240 char *fname; 241 int len; 242 243 for (modules = argvalue; *modules; ++modules) { 244 switch (*modules) { 245 case 'A': 246 debug = ~(0|DEBUG_LINT); 247 break; 248 case 'a': 249 debug |= DEBUG_ARCH; 250 break; 251 case 'C': 252 debug |= DEBUG_CWD; 253 break; 254 case 'c': 255 debug |= DEBUG_COND; 256 break; 257 case 'd': 258 debug |= DEBUG_DIR; 259 break; 260 case 'e': 261 debug |= DEBUG_ERROR; 262 break; 263 case 'f': 264 debug |= DEBUG_FOR; 265 break; 266 case 'g': 267 if (modules[1] == '1') { 268 debug |= DEBUG_GRAPH1; 269 ++modules; 270 } 271 else if (modules[1] == '2') { 272 debug |= DEBUG_GRAPH2; 273 ++modules; 274 } 275 else if (modules[1] == '3') { 276 debug |= DEBUG_GRAPH3; 277 ++modules; 278 } 279 break; 280 case 'h': 281 debug |= DEBUG_HASH; 282 break; 283 case 'j': 284 debug |= DEBUG_JOB; 285 break; 286 case 'L': 287 debug |= DEBUG_LINT; 288 break; 289 case 'l': 290 debug |= DEBUG_LOUD; 291 break; 292 case 'M': 293 debug |= DEBUG_META; 294 break; 295 case 'm': 296 debug |= DEBUG_MAKE; 297 break; 298 case 'n': 299 debug |= DEBUG_SCRIPT; 300 break; 301 case 'p': 302 debug |= DEBUG_PARSE; 303 break; 304 case 's': 305 debug |= DEBUG_SUFF; 306 break; 307 case 't': 308 debug |= DEBUG_TARG; 309 break; 310 case 'V': 311 debugVflag = TRUE; 312 break; 313 case 'v': 314 debug |= DEBUG_VAR; 315 break; 316 case 'x': 317 debug |= DEBUG_SHELL; 318 break; 319 case 'F': 320 if (debug_file != stdout && debug_file != stderr) 321 fclose(debug_file); 322 if (*++modules == '+') { 323 modules++; 324 mode = "a"; 325 } else 326 mode = "w"; 327 if (strcmp(modules, "stdout") == 0) { 328 debug_file = stdout; 329 goto debug_setbuf; 330 } 331 if (strcmp(modules, "stderr") == 0) { 332 debug_file = stderr; 333 goto debug_setbuf; 334 } 335 len = strlen(modules); 336 fname = bmake_malloc(len + 20); 337 memcpy(fname, modules, len + 1); 338 /* Let the filename be modified by the pid */ 339 if (strcmp(fname + len - 3, ".%d") == 0) 340 snprintf(fname + len - 2, 20, "%d", getpid()); 341 debug_file = fopen(fname, mode); 342 if (!debug_file) { 343 fprintf(stderr, "Cannot open debug file %s\n", 344 fname); 345 usage(); 346 } 347 free(fname); 348 goto debug_setbuf; 349 default: 350 (void)fprintf(stderr, 351 "%s: illegal argument to d option -- %c\n", 352 progname, *modules); 353 usage(); 354 } 355 } 356 debug_setbuf: 357 /* 358 * Make the debug_file unbuffered, and make 359 * stdout line buffered (unless debugfile == stdout). 360 */ 361 setvbuf(debug_file, NULL, _IONBF, 0); 362 if (debug_file != stdout) { 363 setvbuf(stdout, NULL, _IOLBF, 0); 364 } 365 } 366 367 /* 368 * does path contain any relative components 369 */ 370 static Boolean 371 is_relpath(const char *path) 372 { 373 const char *cp; 374 375 if (path[0] != '/') 376 return TRUE; 377 cp = path; 378 while ((cp = strstr(cp, "/.")) != NULL) { 379 cp += 2; 380 if (cp[0] == '/' || cp[0] == '\0') 381 return TRUE; 382 else if (cp[0] == '.') { 383 if (cp[1] == '/' || cp[1] == '\0') 384 return TRUE; 385 } 386 } 387 return FALSE; 388 } 389 390 /*- 391 * MainParseArgs -- 392 * Parse a given argument vector. Called from main() and from 393 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 394 * 395 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 396 * 397 * Results: 398 * None 399 * 400 * Side Effects: 401 * Various global and local flags will be set depending on the flags 402 * given 403 */ 404 static void 405 MainParseArgs(int argc, char **argv) 406 { 407 char *p; 408 int c = '?'; 409 int arginc; 410 char *argvalue; 411 const char *getopt_def; 412 struct stat sa, sb; 413 char *optscan; 414 Boolean inOption, dashDash = FALSE; 415 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 416 417 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w" 418 /* Can't actually use getopt(3) because rescanning is not portable */ 419 420 getopt_def = OPTFLAGS; 421 rearg: 422 inOption = FALSE; 423 optscan = NULL; 424 while(argc > 1) { 425 char *getopt_spec; 426 if(!inOption) 427 optscan = argv[1]; 428 c = *optscan++; 429 arginc = 0; 430 if(inOption) { 431 if(c == '\0') { 432 ++argv; 433 --argc; 434 inOption = FALSE; 435 continue; 436 } 437 } else { 438 if (c != '-' || dashDash) 439 break; 440 inOption = TRUE; 441 c = *optscan++; 442 } 443 /* '-' found at some earlier point */ 444 getopt_spec = strchr(getopt_def, c); 445 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 446 /* -<something> found, and <something> should have an arg */ 447 inOption = FALSE; 448 arginc = 1; 449 argvalue = optscan; 450 if(*argvalue == '\0') { 451 if (argc < 3) 452 goto noarg; 453 argvalue = argv[2]; 454 arginc = 2; 455 } 456 } else { 457 argvalue = NULL; 458 } 459 switch(c) { 460 case '\0': 461 arginc = 1; 462 inOption = FALSE; 463 break; 464 case 'B': 465 compatMake = TRUE; 466 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 467 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 468 break; 469 case 'C': 470 if (chdir(argvalue) == -1) { 471 (void)fprintf(stderr, 472 "%s: chdir %s: %s\n", 473 progname, argvalue, 474 strerror(errno)); 475 exit(1); 476 } 477 if (getcwd(curdir, MAXPATHLEN) == NULL) { 478 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 479 exit(2); 480 } 481 if (!is_relpath(argvalue) && 482 stat(argvalue, &sa) != -1 && 483 stat(curdir, &sb) != -1 && 484 sa.st_ino == sb.st_ino && 485 sa.st_dev == sb.st_dev) 486 strncpy(curdir, argvalue, MAXPATHLEN); 487 ignorePWD = TRUE; 488 break; 489 case 'D': 490 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 491 Var_Set(argvalue, "1", VAR_GLOBAL); 492 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 493 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 494 break; 495 case 'I': 496 if (argvalue == NULL) goto noarg; 497 Parse_AddIncludeDir(argvalue); 498 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 499 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 500 break; 501 case 'J': 502 if (argvalue == NULL) goto noarg; 503 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 504 (void)fprintf(stderr, 505 "%s: internal error -- J option malformed (%s)\n", 506 progname, argvalue); 507 usage(); 508 } 509 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 510 (fcntl(jp_1, F_GETFD, 0) < 0)) { 511 #if 0 512 (void)fprintf(stderr, 513 "%s: ###### warning -- J descriptors were closed!\n", 514 progname); 515 exit(2); 516 #endif 517 jp_0 = -1; 518 jp_1 = -1; 519 compatMake = TRUE; 520 } else { 521 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 522 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 523 } 524 break; 525 case 'N': 526 noExecute = TRUE; 527 noRecursiveExecute = TRUE; 528 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 529 break; 530 case 'S': 531 keepgoing = FALSE; 532 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 533 break; 534 case 'T': 535 if (argvalue == NULL) goto noarg; 536 tracefile = bmake_strdup(argvalue); 537 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 538 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 539 break; 540 case 'V': 541 case 'v': 542 if (argvalue == NULL) goto noarg; 543 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 544 Lst_Append(variables, argvalue); 545 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 546 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 547 break; 548 case 'W': 549 parseWarnFatal = TRUE; 550 break; 551 case 'X': 552 varNoExportEnv = TRUE; 553 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 554 break; 555 case 'd': 556 if (argvalue == NULL) goto noarg; 557 /* If '-d-opts' don't pass to children */ 558 if (argvalue[0] == '-') 559 argvalue++; 560 else { 561 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 562 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 563 } 564 parse_debug_options(argvalue); 565 break; 566 case 'e': 567 checkEnvFirst = TRUE; 568 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 569 break; 570 case 'f': 571 if (argvalue == NULL) goto noarg; 572 Lst_Append(makefiles, argvalue); 573 break; 574 case 'i': 575 ignoreErrors = TRUE; 576 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 577 break; 578 case 'j': 579 if (argvalue == NULL) goto noarg; 580 forceJobs = TRUE; 581 maxJobs = strtol(argvalue, &p, 0); 582 if (*p != '\0' || maxJobs < 1) { 583 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 584 progname); 585 exit(1); 586 } 587 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 588 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 589 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 590 maxJobTokens = maxJobs; 591 break; 592 case 'k': 593 keepgoing = TRUE; 594 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 595 break; 596 case 'm': 597 if (argvalue == NULL) goto noarg; 598 /* look for magic parent directory search string */ 599 if (strncmp(".../", argvalue, 4) == 0) { 600 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 601 found_path, sizeof(found_path))) 602 break; /* nothing doing */ 603 (void)Dir_AddDir(sysIncPath, found_path); 604 } else { 605 (void)Dir_AddDir(sysIncPath, argvalue); 606 } 607 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 608 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 609 break; 610 case 'n': 611 noExecute = TRUE; 612 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 613 break; 614 case 'q': 615 queryFlag = TRUE; 616 /* Kind of nonsensical, wot? */ 617 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 618 break; 619 case 'r': 620 noBuiltins = TRUE; 621 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 622 break; 623 case 's': 624 beSilent = TRUE; 625 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 626 break; 627 case 't': 628 touchFlag = TRUE; 629 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 630 break; 631 case 'w': 632 enterFlag = TRUE; 633 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 634 break; 635 case '-': 636 dashDash = TRUE; 637 break; 638 default: 639 case '?': 640 usage(); 641 } 642 argv += arginc; 643 argc -= arginc; 644 } 645 646 oldVars = TRUE; 647 648 /* 649 * See if the rest of the arguments are variable assignments and 650 * perform them if so. Else take them to be targets and stuff them 651 * on the end of the "create" list. 652 */ 653 for (; argc > 1; ++argv, --argc) 654 if (Parse_IsVar(argv[1])) { 655 Parse_DoVar(argv[1], VAR_CMD); 656 } else { 657 if (!*argv[1]) 658 Punt("illegal (null) argument."); 659 if (*argv[1] == '-' && !dashDash) 660 goto rearg; 661 Lst_Append(create, bmake_strdup(argv[1])); 662 } 663 664 return; 665 noarg: 666 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 667 progname, c); 668 usage(); 669 } 670 671 /*- 672 * Main_ParseArgLine -- 673 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 674 * is encountered and by main() when reading the .MAKEFLAGS envariable. 675 * Takes a line of arguments and breaks it into its 676 * component words and passes those words and the number of them to the 677 * MainParseArgs function. 678 * The line should have all its leading whitespace removed. 679 * 680 * Input: 681 * line Line to fracture 682 * 683 * Results: 684 * None 685 * 686 * Side Effects: 687 * Only those that come from the various arguments. 688 */ 689 void 690 Main_ParseArgLine(const char *line) 691 { 692 char **argv; /* Manufactured argument vector */ 693 size_t argc; /* Number of arguments in argv */ 694 char *args; /* Space used by the args */ 695 char *p1; 696 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 697 char *buf; 698 699 if (line == NULL) 700 return; 701 for (; *line == ' '; ++line) 702 continue; 703 if (!*line) 704 return; 705 706 buf = str_concat3(argv0, " ", line); 707 free(p1); 708 709 argv = brk_string(buf, TRUE, &argc, &args); 710 if (argv == NULL) { 711 Error("Unterminated quoted string [%s]", buf); 712 free(buf); 713 return; 714 } 715 free(buf); 716 MainParseArgs((int)argc, argv); 717 718 free(args); 719 free(argv); 720 } 721 722 Boolean 723 Main_SetObjdir(const char *fmt, ...) 724 { 725 struct stat sb; 726 char *path; 727 char buf[MAXPATHLEN + 1]; 728 char buf2[MAXPATHLEN + 1]; 729 Boolean rc = FALSE; 730 va_list ap; 731 732 va_start(ap, fmt); 733 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 734 va_end(ap); 735 736 if (path[0] != '/') { 737 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 738 path = buf2; 739 } 740 741 /* look for the directory and try to chdir there */ 742 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 743 if (chdir(path)) { 744 (void)fprintf(stderr, "make warning: %s: %s.\n", 745 path, strerror(errno)); 746 } else { 747 snprintf(objdir, sizeof objdir, "%s", path); 748 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 749 setenv("PWD", objdir, 1); 750 Dir_InitDot(); 751 purge_cached_realpaths(); 752 rc = TRUE; 753 if (enterFlag && strcmp(objdir, curdir) != 0) 754 enterFlagObj = TRUE; 755 } 756 } 757 758 return rc; 759 } 760 761 static Boolean 762 Main_SetVarObjdir(const char *var, const char *suffix) 763 { 764 char *path_freeIt; 765 const char *path = Var_Value(var, VAR_CMD, &path_freeIt); 766 const char *xpath; 767 char *xpath_freeIt; 768 769 if (path == NULL || path[0] == '\0') { 770 bmake_free(path_freeIt); 771 return FALSE; 772 } 773 774 /* expand variable substitutions */ 775 xpath = path; 776 xpath_freeIt = NULL; 777 if (strchr(path, '$') != 0) 778 xpath = xpath_freeIt = Var_Subst(path, VAR_GLOBAL, 779 VARE_WANTRES); 780 781 (void)Main_SetObjdir("%s%s", xpath, suffix); 782 783 bmake_free(xpath_freeIt); 784 bmake_free(path_freeIt); 785 return TRUE; 786 } 787 788 /* Return 0 if reading the makefile failed, for Lst_Find. */ 789 static int 790 ReadMakefileFailed(const void *p, const void *q) 791 { 792 return ReadMakefile(p, q) == 0; 793 } 794 795 int 796 str2Lst_Append(Lst lp, char *str, const char *sep) 797 { 798 char *cp; 799 int n; 800 801 if (!sep) 802 sep = " \t"; 803 804 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 805 Lst_Append(lp, cp); 806 n++; 807 } 808 return n; 809 } 810 811 #ifdef SIGINFO 812 /*ARGSUSED*/ 813 static void 814 siginfo(int signo MAKE_ATTR_UNUSED) 815 { 816 char dir[MAXPATHLEN]; 817 char str[2 * MAXPATHLEN]; 818 int len; 819 if (getcwd(dir, sizeof(dir)) == NULL) 820 return; 821 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 822 if (len > 0) 823 (void)write(STDERR_FILENO, str, (size_t)len); 824 } 825 #endif 826 827 /* 828 * Allow makefiles some control over the mode we run in. 829 */ 830 void 831 MakeMode(const char *mode) 832 { 833 char *mp = NULL; 834 835 if (!mode) 836 mode = mp = Var_Subst("${" MAKE_MODE ":tl}", 837 VAR_GLOBAL, VARE_WANTRES); 838 839 if (mode && *mode) { 840 if (strstr(mode, "compat")) { 841 compatMake = TRUE; 842 forceJobs = FALSE; 843 } 844 #if USE_META 845 if (strstr(mode, "meta")) 846 meta_mode_init(mode); 847 #endif 848 } 849 850 free(mp); 851 } 852 853 static void 854 doPrintVars(void) 855 { 856 LstNode ln; 857 Boolean expandVars; 858 859 if (printVars == EXPAND_VARS) 860 expandVars = TRUE; 861 else if (debugVflag) 862 expandVars = FALSE; 863 else 864 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 865 866 for (ln = Lst_First(variables); ln != NULL; ln = Lst_Succ(ln)) { 867 char *var = Lst_Datum(ln); 868 const char *value; 869 char *p1; 870 871 if (strchr(var, '$')) { 872 value = p1 = Var_Subst(var, VAR_GLOBAL, VARE_WANTRES); 873 } else if (expandVars) { 874 char tmp[128]; 875 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 876 877 if (len >= (int)sizeof(tmp)) 878 Fatal("%s: variable name too big: %s", 879 progname, var); 880 value = p1 = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 881 } else { 882 value = Var_Value(var, VAR_GLOBAL, &p1); 883 } 884 printf("%s\n", value ? value : ""); 885 bmake_free(p1); 886 } 887 } 888 889 static Boolean 890 runTargets(void) 891 { 892 Lst targs; /* target nodes to create -- passed to Make_Init */ 893 Boolean outOfDate; /* FALSE if all targets up to date */ 894 895 /* 896 * Have now read the entire graph and need to make a list of 897 * targets to create. If none was given on the command line, 898 * we consult the parsing module to find the main target(s) 899 * to create. 900 */ 901 if (Lst_IsEmpty(create)) 902 targs = Parse_MainName(); 903 else 904 targs = Targ_FindList(create, TARG_CREATE); 905 906 if (!compatMake) { 907 /* 908 * Initialize job module before traversing the graph 909 * now that any .BEGIN and .END targets have been read. 910 * This is done only if the -q flag wasn't given 911 * (to prevent the .BEGIN from being executed should 912 * it exist). 913 */ 914 if (!queryFlag) { 915 Job_Init(); 916 jobsRunning = TRUE; 917 } 918 919 /* Traverse the graph, checking on all the targets */ 920 outOfDate = Make_Run(targs); 921 } else { 922 /* 923 * Compat_Init will take care of creating all the 924 * targets as well as initializing the module. 925 */ 926 Compat_Run(targs); 927 outOfDate = FALSE; 928 } 929 Lst_Free(targs); 930 return outOfDate; 931 } 932 933 /*- 934 * main -- 935 * The main function, for obvious reasons. Initializes variables 936 * and a few modules, then parses the arguments give it in the 937 * environment and on the command line. Reads the system makefile 938 * followed by either Makefile, makefile or the file given by the 939 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 940 * flags it has received by then uses either the Make or the Compat 941 * module to create the initial list of targets. 942 * 943 * Results: 944 * If -q was given, exits -1 if anything was out-of-date. Else it exits 945 * 0. 946 * 947 * Side Effects: 948 * The program exits when done. Targets are created. etc. etc. etc. 949 */ 950 int 951 main(int argc, char **argv) 952 { 953 Boolean outOfDate; /* FALSE if all targets up to date */ 954 struct stat sb, sa; 955 char *p1, *path; 956 char mdpath[MAXPATHLEN]; 957 const char *machine = getenv("MACHINE"); 958 const char *machine_arch = getenv("MACHINE_ARCH"); 959 char *syspath = getenv("MAKESYSPATH"); 960 Lst sysMkPath; /* Path of sys.mk */ 961 char *cp = NULL, *start; 962 /* avoid faults on read-only strings */ 963 static char defsyspath[] = _PATH_DEFSYSPATH; 964 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 965 struct timeval rightnow; /* to initialize random seed */ 966 struct utsname utsname; 967 968 /* default to writing debug to stderr */ 969 debug_file = stderr; 970 971 #ifdef SIGINFO 972 (void)bmake_signal(SIGINFO, siginfo); 973 #endif 974 /* 975 * Set the seed to produce a different random sequence 976 * on each program execution. 977 */ 978 gettimeofday(&rightnow, NULL); 979 srandom(rightnow.tv_sec + rightnow.tv_usec); 980 981 if ((progname = strrchr(argv[0], '/')) != NULL) 982 progname++; 983 else 984 progname = argv[0]; 985 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 986 /* 987 * get rid of resource limit on file descriptors 988 */ 989 { 990 struct rlimit rl; 991 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 992 rl.rlim_cur != rl.rlim_max) { 993 rl.rlim_cur = rl.rlim_max; 994 (void)setrlimit(RLIMIT_NOFILE, &rl); 995 } 996 } 997 #endif 998 999 if (uname(&utsname) == -1) { 1000 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1001 strerror(errno)); 1002 exit(2); 1003 } 1004 1005 /* 1006 * Get the name of this type of MACHINE from utsname 1007 * so we can share an executable for similar machines. 1008 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1009 * 1010 * Note that both MACHINE and MACHINE_ARCH are decided at 1011 * run-time. 1012 */ 1013 if (!machine) { 1014 #ifdef MAKE_NATIVE 1015 machine = utsname.machine; 1016 #else 1017 #ifdef MAKE_MACHINE 1018 machine = MAKE_MACHINE; 1019 #else 1020 machine = "unknown"; 1021 #endif 1022 #endif 1023 } 1024 1025 if (!machine_arch) { 1026 #ifdef MAKE_NATIVE 1027 static char machine_arch_buf[sizeof(utsname.machine)]; 1028 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1029 size_t len = sizeof(machine_arch_buf); 1030 1031 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1032 &len, NULL, 0) < 0) { 1033 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1034 strerror(errno)); 1035 exit(2); 1036 } 1037 1038 machine_arch = machine_arch_buf; 1039 #else 1040 #ifndef MACHINE_ARCH 1041 #ifdef MAKE_MACHINE_ARCH 1042 machine_arch = MAKE_MACHINE_ARCH; 1043 #else 1044 machine_arch = "unknown"; 1045 #endif 1046 #else 1047 machine_arch = MACHINE_ARCH; 1048 #endif 1049 #endif 1050 } 1051 1052 myPid = getpid(); /* remember this for vFork() */ 1053 1054 /* 1055 * Just in case MAKEOBJDIR wants us to do something tricky. 1056 */ 1057 Var_Init(); /* Initialize the lists of variables for 1058 * parsing arguments */ 1059 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1060 Var_Set("MACHINE", machine, VAR_GLOBAL); 1061 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1062 #ifdef MAKE_VERSION 1063 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1064 #endif 1065 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1066 /* 1067 * This is the traditional preference for makefiles. 1068 */ 1069 #ifndef MAKEFILE_PREFERENCE_LIST 1070 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1071 #endif 1072 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1073 VAR_GLOBAL); 1074 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1075 1076 create = Lst_Init(); 1077 makefiles = Lst_Init(); 1078 printVars = 0; 1079 debugVflag = FALSE; 1080 variables = Lst_Init(); 1081 beSilent = FALSE; /* Print commands as executed */ 1082 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1083 noExecute = FALSE; /* Execute all commands */ 1084 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1085 keepgoing = FALSE; /* Stop on error */ 1086 allPrecious = FALSE; /* Remove targets when interrupted */ 1087 deleteOnError = FALSE; /* Historical default behavior */ 1088 queryFlag = FALSE; /* This is not just a check-run */ 1089 noBuiltins = FALSE; /* Read the built-in rules */ 1090 touchFlag = FALSE; /* Actually update targets */ 1091 debug = 0; /* No debug verbosity, please. */ 1092 jobsRunning = FALSE; 1093 1094 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1095 maxJobTokens = maxJobs; 1096 compatMake = FALSE; /* No compat mode */ 1097 ignorePWD = FALSE; 1098 1099 /* 1100 * Initialize the parsing, directory and variable modules to prepare 1101 * for the reading of inclusion paths and variable settings on the 1102 * command line 1103 */ 1104 1105 /* 1106 * Initialize various variables. 1107 * MAKE also gets this name, for compatibility 1108 * .MAKEFLAGS gets set to the empty string just in case. 1109 * MFLAGS also gets initialized empty, for compatibility. 1110 */ 1111 Parse_Init(); 1112 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1113 /* 1114 * Leave alone if it is an absolute path, or if it does 1115 * not contain a '/' in which case we need to find it in 1116 * the path, like execvp(3) and the shells do. 1117 */ 1118 p1 = argv[0]; 1119 } else { 1120 /* 1121 * A relative path, canonicalize it. 1122 */ 1123 p1 = cached_realpath(argv[0], mdpath); 1124 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1125 p1 = argv[0]; /* realpath failed */ 1126 } 1127 } 1128 Var_Set("MAKE", p1, VAR_GLOBAL); 1129 Var_Set(".MAKE", p1, VAR_GLOBAL); 1130 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1131 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1132 Var_Set("MFLAGS", "", VAR_GLOBAL); 1133 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1134 /* some makefiles need to know this */ 1135 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1136 1137 /* 1138 * Set some other useful macros 1139 */ 1140 { 1141 char tmp[64], *ep; 1142 1143 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1144 if (makelevel < 0) 1145 makelevel = 0; 1146 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1147 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1148 snprintf(tmp, sizeof(tmp), "%u", myPid); 1149 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1150 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1151 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1152 } 1153 if (makelevel > 0) { 1154 char pn[1024]; 1155 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1156 progname = bmake_strdup(pn); 1157 } 1158 1159 #ifdef USE_META 1160 meta_init(); 1161 #endif 1162 Dir_Init(); 1163 1164 /* 1165 * First snag any flags out of the MAKE environment variable. 1166 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1167 * in a different format). 1168 */ 1169 #ifdef POSIX 1170 p1 = explode(getenv("MAKEFLAGS")); 1171 Main_ParseArgLine(p1); 1172 free(p1); 1173 #else 1174 Main_ParseArgLine(getenv("MAKE")); 1175 #endif 1176 1177 /* 1178 * Find where we are (now). 1179 * We take care of PWD for the automounter below... 1180 */ 1181 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1182 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1183 progname, strerror(errno)); 1184 exit(2); 1185 } 1186 1187 MainParseArgs(argc, argv); 1188 1189 if (enterFlag) 1190 printf("%s: Entering directory `%s'\n", progname, curdir); 1191 1192 /* 1193 * Verify that cwd is sane. 1194 */ 1195 if (stat(curdir, &sa) == -1) { 1196 (void)fprintf(stderr, "%s: %s: %s.\n", 1197 progname, curdir, strerror(errno)); 1198 exit(2); 1199 } 1200 1201 /* 1202 * All this code is so that we know where we are when we start up 1203 * on a different machine with pmake. 1204 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1205 * since the value of curdir can vary depending on how we got 1206 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1207 * or via subdir.mk in which case its likely a shell which does 1208 * not provide it. 1209 * So, to stop it breaking this case only, we ignore PWD if 1210 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1211 */ 1212 #ifndef NO_PWD_OVERRIDE 1213 if (!ignorePWD) { 1214 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1215 1216 if ((pwd = getenv("PWD")) != NULL && 1217 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1218 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1219 VAR_CMD, &ptmp2); 1220 1221 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1222 if (stat(pwd, &sb) == 0 && 1223 sa.st_ino == sb.st_ino && 1224 sa.st_dev == sb.st_dev) 1225 (void)strncpy(curdir, pwd, MAXPATHLEN); 1226 } 1227 } 1228 bmake_free(ptmp1); 1229 bmake_free(ptmp2); 1230 } 1231 #endif 1232 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1233 1234 /* 1235 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1236 * MAKEOBJDIR is set in the environment, try only that value 1237 * and fall back to .CURDIR if it does not exist. 1238 * 1239 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1240 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1241 * of these paths exist, just use .CURDIR. 1242 */ 1243 Dir_InitDir(curdir); 1244 (void)Main_SetObjdir("%s", curdir); 1245 1246 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1247 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1248 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1249 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1250 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1251 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1252 1253 /* 1254 * Initialize archive, target and suffix modules in preparation for 1255 * parsing the makefile(s) 1256 */ 1257 Arch_Init(); 1258 Targ_Init(); 1259 Suff_Init(); 1260 Trace_Init(tracefile); 1261 1262 DEFAULT = NULL; 1263 (void)time(&now); 1264 1265 Trace_Log(MAKESTART, NULL); 1266 1267 /* 1268 * Set up the .TARGETS variable to contain the list of targets to be 1269 * created. If none specified, make the variable empty -- the parser 1270 * will fill the thing in with the default or .MAIN target. 1271 */ 1272 if (!Lst_IsEmpty(create)) { 1273 LstNode ln; 1274 1275 for (ln = Lst_First(create); ln != NULL; ln = Lst_Succ(ln)) { 1276 char *name = Lst_Datum(ln); 1277 Var_Append(".TARGETS", name, VAR_GLOBAL); 1278 } 1279 } else 1280 Var_Set(".TARGETS", "", VAR_GLOBAL); 1281 1282 1283 /* 1284 * If no user-supplied system path was given (through the -m option) 1285 * add the directories from the DEFSYSPATH (more than one may be given 1286 * as dir1:...:dirn) to the system include path. 1287 */ 1288 if (syspath == NULL || *syspath == '\0') 1289 syspath = defsyspath; 1290 else 1291 syspath = bmake_strdup(syspath); 1292 1293 for (start = syspath; *start != '\0'; start = cp) { 1294 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1295 continue; 1296 if (*cp == ':') { 1297 *cp++ = '\0'; 1298 } 1299 /* look for magic parent directory search string */ 1300 if (strncmp(".../", start, 4) != 0) { 1301 (void)Dir_AddDir(defIncPath, start); 1302 } else { 1303 if (Dir_FindHereOrAbove(curdir, start+4, 1304 found_path, sizeof(found_path))) { 1305 (void)Dir_AddDir(defIncPath, found_path); 1306 } 1307 } 1308 } 1309 if (syspath != defsyspath) 1310 free(syspath); 1311 1312 /* 1313 * Read in the built-in rules first, followed by the specified 1314 * makefile, if it was (makefile != NULL), or the default 1315 * makefile and Makefile, in that order, if it wasn't. 1316 */ 1317 if (!noBuiltins) { 1318 LstNode ln; 1319 1320 sysMkPath = Lst_Init(); 1321 Dir_Expand(_PATH_DEFSYSMK, 1322 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1323 sysMkPath); 1324 if (Lst_IsEmpty(sysMkPath)) 1325 Fatal("%s: no system rules (%s).", progname, 1326 _PATH_DEFSYSMK); 1327 ln = Lst_Find(sysMkPath, ReadMakefile, NULL); 1328 if (ln == NULL) 1329 Fatal("%s: cannot open %s.", progname, 1330 (char *)Lst_Datum(ln)); 1331 } 1332 1333 if (!Lst_IsEmpty(makefiles)) { 1334 LstNode ln; 1335 1336 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1337 if (ln != NULL) 1338 Fatal("%s: cannot open %s.", progname, 1339 (char *)Lst_Datum(ln)); 1340 } else { 1341 p1 = Var_Subst("${" MAKEFILE_PREFERENCE "}", 1342 VAR_CMD, VARE_WANTRES); 1343 if (p1) { 1344 (void)str2Lst_Append(makefiles, p1, NULL); 1345 (void)Lst_Find(makefiles, ReadMakefile, NULL); 1346 free(p1); 1347 } 1348 } 1349 1350 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1351 if (!noBuiltins || !printVars) { 1352 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE:T}", 1353 VAR_CMD, VARE_WANTRES); 1354 doing_depend = TRUE; 1355 (void)ReadMakefile(makeDependfile, NULL); 1356 doing_depend = FALSE; 1357 } 1358 1359 if (enterFlagObj) 1360 printf("%s: Entering directory `%s'\n", progname, objdir); 1361 1362 MakeMode(NULL); 1363 1364 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1365 bmake_free(p1); 1366 1367 if (!forceJobs && !compatMake && 1368 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1369 char *value; 1370 int n; 1371 1372 value = Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES); 1373 n = strtol(value, NULL, 0); 1374 if (n < 1) { 1375 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1376 progname); 1377 exit(1); 1378 } 1379 if (n != maxJobs) { 1380 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1381 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1382 } 1383 maxJobs = n; 1384 maxJobTokens = maxJobs; 1385 forceJobs = TRUE; 1386 free(value); 1387 } 1388 1389 /* 1390 * Be compatible if user did not specify -j and did not explicitly 1391 * turned compatibility on 1392 */ 1393 if (!compatMake && !forceJobs) { 1394 compatMake = TRUE; 1395 } 1396 1397 if (!compatMake) 1398 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1399 if (DEBUG(JOB)) 1400 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1401 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1402 1403 if (!printVars) 1404 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1405 1406 1407 /* 1408 * For compatibility, look at the directories in the VPATH variable 1409 * and add them to the search path, if the variable is defined. The 1410 * variable's value is in the same format as the PATH envariable, i.e. 1411 * <directory>:<directory>:<directory>... 1412 */ 1413 if (Var_Exists("VPATH", VAR_CMD)) { 1414 char *vpath, savec; 1415 /* 1416 * GCC stores string constants in read-only memory, but 1417 * Var_Subst will want to write this thing, so store it 1418 * in an array 1419 */ 1420 static char VPATH[] = "${VPATH}"; 1421 1422 vpath = Var_Subst(VPATH, VAR_CMD, VARE_WANTRES); 1423 path = vpath; 1424 do { 1425 /* skip to end of directory */ 1426 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1427 continue; 1428 /* Save terminator character so know when to stop */ 1429 savec = *cp; 1430 *cp = '\0'; 1431 /* Add directory to search path */ 1432 (void)Dir_AddDir(dirSearchPath, path); 1433 *cp = savec; 1434 path = cp + 1; 1435 } while (savec == ':'); 1436 free(vpath); 1437 } 1438 1439 /* 1440 * Now that all search paths have been read for suffixes et al, it's 1441 * time to add the default search path to their lists... 1442 */ 1443 Suff_DoPaths(); 1444 1445 /* 1446 * Propagate attributes through :: dependency lists. 1447 */ 1448 Targ_Propagate(); 1449 1450 /* print the initial graph, if the user requested it */ 1451 if (DEBUG(GRAPH1)) 1452 Targ_PrintGraph(1); 1453 1454 /* print the values of any variables requested by the user */ 1455 if (printVars) { 1456 doPrintVars(); 1457 outOfDate = FALSE; 1458 } else { 1459 outOfDate = runTargets(); 1460 } 1461 1462 #ifdef CLEANUP 1463 Lst_Free(variables); 1464 Lst_Free(makefiles); 1465 Lst_Destroy(create, free); 1466 #endif 1467 1468 /* print the graph now it's been processed if the user requested it */ 1469 if (DEBUG(GRAPH2)) 1470 Targ_PrintGraph(2); 1471 1472 Trace_Log(MAKEEND, 0); 1473 1474 if (enterFlagObj) 1475 printf("%s: Leaving directory `%s'\n", progname, objdir); 1476 if (enterFlag) 1477 printf("%s: Leaving directory `%s'\n", progname, curdir); 1478 1479 #ifdef USE_META 1480 meta_finish(); 1481 #endif 1482 Suff_End(); 1483 Targ_End(); 1484 Arch_End(); 1485 Var_End(); 1486 Parse_End(); 1487 Dir_End(); 1488 Job_End(); 1489 Trace_End(); 1490 1491 return outOfDate ? 1 : 0; 1492 } 1493 1494 /* Open and parse the given makefile, with all its side effects. 1495 * 1496 * Results: 1497 * 0 if ok. -1 if couldn't open file. 1498 */ 1499 static int 1500 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1501 { 1502 const char *fname = p; /* makefile to read */ 1503 int fd; 1504 char *name, *path = NULL; 1505 1506 if (!strcmp(fname, "-")) { 1507 Parse_File(NULL /*stdin*/, -1); 1508 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1509 } else { 1510 /* if we've chdir'd, rebuild the path name */ 1511 if (strcmp(curdir, objdir) && *fname != '/') { 1512 path = str_concat3(curdir, "/", fname); 1513 fd = open(path, O_RDONLY); 1514 if (fd != -1) { 1515 fname = path; 1516 goto found; 1517 } 1518 free(path); 1519 1520 /* If curdir failed, try objdir (ala .depend) */ 1521 path = str_concat3(objdir, "/", fname); 1522 fd = open(path, O_RDONLY); 1523 if (fd != -1) { 1524 fname = path; 1525 goto found; 1526 } 1527 } else { 1528 fd = open(fname, O_RDONLY); 1529 if (fd != -1) 1530 goto found; 1531 } 1532 /* look in -I and system include directories. */ 1533 name = Dir_FindFile(fname, parseIncPath); 1534 if (!name) 1535 name = Dir_FindFile(fname, 1536 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1537 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1538 free(name); 1539 free(path); 1540 return -1; 1541 } 1542 fname = name; 1543 /* 1544 * set the MAKEFILE variable desired by System V fans -- the 1545 * placement of the setting here means it gets set to the last 1546 * makefile specified, as it is set by SysV make. 1547 */ 1548 found: 1549 if (!doing_depend) 1550 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1551 Parse_File(fname, fd); 1552 } 1553 free(path); 1554 return 0; 1555 } 1556 1557 1558 1559 /*- 1560 * Cmd_Exec -- 1561 * Execute the command in cmd, and return the output of that command 1562 * in a string. In the output, newlines are replaced with spaces. 1563 * 1564 * Results: 1565 * A string containing the output of the command, or the empty string. 1566 * *errfmt returns a format string describing the command failure, 1567 * if any, using a single %s conversion specification. 1568 * 1569 * Side Effects: 1570 * The string must be freed by the caller. 1571 */ 1572 char * 1573 Cmd_Exec(const char *cmd, const char **errfmt) 1574 { 1575 const char *args[4]; /* Args for invoking the shell */ 1576 int fds[2]; /* Pipe streams */ 1577 int cpid; /* Child PID */ 1578 int pid; /* PID from wait() */ 1579 int status; /* command exit status */ 1580 Buffer buf; /* buffer to store the result */ 1581 ssize_t bytes_read; 1582 char *res; /* result */ 1583 size_t res_len; 1584 char *cp; 1585 int savederr; /* saved errno */ 1586 1587 *errfmt = NULL; 1588 1589 if (!shellName) 1590 Shell_Init(); 1591 /* 1592 * Set up arguments for shell 1593 */ 1594 args[0] = shellName; 1595 args[1] = "-c"; 1596 args[2] = cmd; 1597 args[3] = NULL; 1598 1599 /* 1600 * Open a pipe for fetching its output 1601 */ 1602 if (pipe(fds) == -1) { 1603 *errfmt = "Couldn't create pipe for \"%s\""; 1604 goto bad; 1605 } 1606 1607 /* 1608 * Fork 1609 */ 1610 switch (cpid = vFork()) { 1611 case 0: 1612 /* 1613 * Close input side of pipe 1614 */ 1615 (void)close(fds[0]); 1616 1617 /* 1618 * Duplicate the output stream to the shell's output, then 1619 * shut the extra thing down. Note we don't fetch the error 1620 * stream...why not? Why? 1621 */ 1622 (void)dup2(fds[1], 1); 1623 (void)close(fds[1]); 1624 1625 Var_ExportVars(); 1626 1627 (void)execv(shellPath, UNCONST(args)); 1628 _exit(1); 1629 /*NOTREACHED*/ 1630 1631 case -1: 1632 *errfmt = "Couldn't exec \"%s\""; 1633 goto bad; 1634 1635 default: 1636 /* 1637 * No need for the writing half 1638 */ 1639 (void)close(fds[1]); 1640 1641 savederr = 0; 1642 Buf_Init(&buf, 0); 1643 1644 do { 1645 char result[BUFSIZ]; 1646 bytes_read = read(fds[0], result, sizeof(result)); 1647 if (bytes_read > 0) 1648 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1649 } 1650 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1651 if (bytes_read == -1) 1652 savederr = errno; 1653 1654 /* 1655 * Close the input side of the pipe. 1656 */ 1657 (void)close(fds[0]); 1658 1659 /* 1660 * Wait for the process to exit. 1661 */ 1662 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1663 JobReapChild(pid, status, FALSE); 1664 continue; 1665 } 1666 res_len = Buf_Size(&buf); 1667 res = Buf_Destroy(&buf, FALSE); 1668 1669 if (savederr != 0) 1670 *errfmt = "Couldn't read shell's output for \"%s\""; 1671 1672 if (WIFSIGNALED(status)) 1673 *errfmt = "\"%s\" exited on a signal"; 1674 else if (WEXITSTATUS(status) != 0) 1675 *errfmt = "\"%s\" returned non-zero status"; 1676 1677 /* Convert newlines to spaces. A final newline is just stripped */ 1678 if (res_len > 0 && res[res_len - 1] == '\n') 1679 res[res_len - 1] = '\0'; 1680 for (cp = res; *cp != '\0'; cp++) 1681 if (*cp == '\n') 1682 *cp = ' '; 1683 break; 1684 } 1685 return res; 1686 bad: 1687 return bmake_strdup(""); 1688 } 1689 1690 /*- 1691 * Error -- 1692 * Print an error message given its format. 1693 * 1694 * Results: 1695 * None. 1696 * 1697 * Side Effects: 1698 * The message is printed. 1699 */ 1700 /* VARARGS */ 1701 void 1702 Error(const char *fmt, ...) 1703 { 1704 va_list ap; 1705 FILE *err_file; 1706 1707 err_file = debug_file; 1708 if (err_file == stdout) 1709 err_file = stderr; 1710 (void)fflush(stdout); 1711 for (;;) { 1712 va_start(ap, fmt); 1713 fprintf(err_file, "%s: ", progname); 1714 (void)vfprintf(err_file, fmt, ap); 1715 va_end(ap); 1716 (void)fprintf(err_file, "\n"); 1717 (void)fflush(err_file); 1718 if (err_file == stderr) 1719 break; 1720 err_file = stderr; 1721 } 1722 } 1723 1724 /*- 1725 * Fatal -- 1726 * Produce a Fatal error message. If jobs are running, waits for them 1727 * to finish. 1728 * 1729 * Results: 1730 * None 1731 * 1732 * Side Effects: 1733 * The program exits 1734 */ 1735 /* VARARGS */ 1736 void 1737 Fatal(const char *fmt, ...) 1738 { 1739 va_list ap; 1740 1741 va_start(ap, fmt); 1742 if (jobsRunning) 1743 Job_Wait(); 1744 1745 (void)fflush(stdout); 1746 (void)vfprintf(stderr, fmt, ap); 1747 va_end(ap); 1748 (void)fprintf(stderr, "\n"); 1749 (void)fflush(stderr); 1750 1751 PrintOnError(NULL, NULL); 1752 1753 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1754 Targ_PrintGraph(2); 1755 Trace_Log(MAKEERROR, 0); 1756 exit(2); /* Not 1 so -q can distinguish error */ 1757 } 1758 1759 /* 1760 * Punt -- 1761 * Major exception once jobs are being created. Kills all jobs, prints 1762 * a message and exits. 1763 * 1764 * Results: 1765 * None 1766 * 1767 * Side Effects: 1768 * All children are killed indiscriminately and the program Lib_Exits 1769 */ 1770 /* VARARGS */ 1771 void 1772 Punt(const char *fmt, ...) 1773 { 1774 va_list ap; 1775 1776 va_start(ap, fmt); 1777 (void)fflush(stdout); 1778 (void)fprintf(stderr, "%s: ", progname); 1779 (void)vfprintf(stderr, fmt, ap); 1780 va_end(ap); 1781 (void)fprintf(stderr, "\n"); 1782 (void)fflush(stderr); 1783 1784 PrintOnError(NULL, NULL); 1785 1786 DieHorribly(); 1787 } 1788 1789 /*- 1790 * DieHorribly -- 1791 * Exit without giving a message. 1792 * 1793 * Results: 1794 * None 1795 * 1796 * Side Effects: 1797 * A big one... 1798 */ 1799 void 1800 DieHorribly(void) 1801 { 1802 if (jobsRunning) 1803 Job_AbortAll(); 1804 if (DEBUG(GRAPH2)) 1805 Targ_PrintGraph(2); 1806 Trace_Log(MAKEERROR, 0); 1807 exit(2); /* Not 1, so -q can distinguish error */ 1808 } 1809 1810 /* 1811 * Finish -- 1812 * Called when aborting due to errors in child shell to signal 1813 * abnormal exit. 1814 * 1815 * Results: 1816 * None 1817 * 1818 * Side Effects: 1819 * The program exits 1820 */ 1821 void 1822 Finish(int errors) 1823 /* number of errors encountered in Make_Make */ 1824 { 1825 if (dieQuietly(NULL, -1)) 1826 exit(2); 1827 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1828 } 1829 1830 /* 1831 * eunlink -- 1832 * Remove a file carefully, avoiding directories. 1833 */ 1834 int 1835 eunlink(const char *file) 1836 { 1837 struct stat st; 1838 1839 if (lstat(file, &st) == -1) 1840 return -1; 1841 1842 if (S_ISDIR(st.st_mode)) { 1843 errno = EISDIR; 1844 return -1; 1845 } 1846 return unlink(file); 1847 } 1848 1849 /* 1850 * execError -- 1851 * Print why exec failed, avoiding stdio. 1852 */ 1853 void 1854 execError(const char *af, const char *av) 1855 { 1856 #ifdef USE_IOVEC 1857 int i = 0; 1858 struct iovec iov[8]; 1859 #define IOADD(s) \ 1860 (void)(iov[i].iov_base = UNCONST(s), \ 1861 iov[i].iov_len = strlen(iov[i].iov_base), \ 1862 i++) 1863 #else 1864 #define IOADD(void)write(2, s, strlen(s)) 1865 #endif 1866 1867 IOADD(progname); 1868 IOADD(": "); 1869 IOADD(af); 1870 IOADD("("); 1871 IOADD(av); 1872 IOADD(") failed ("); 1873 IOADD(strerror(errno)); 1874 IOADD(")\n"); 1875 1876 #ifdef USE_IOVEC 1877 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1878 continue; 1879 #endif 1880 } 1881 1882 /* 1883 * usage -- 1884 * exit with usage message 1885 */ 1886 static void 1887 usage(void) 1888 { 1889 char *p; 1890 if ((p = strchr(progname, '[')) != NULL) 1891 *p = '\0'; 1892 1893 (void)fprintf(stderr, 1894 "usage: %s [-BeikNnqrstWwX] \n" 1895 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1896 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1897 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1898 progname); 1899 exit(2); 1900 } 1901 1902 /* 1903 * realpath(3) can get expensive, cache results... 1904 */ 1905 static GNode *cached_realpaths = NULL; 1906 1907 static GNode * 1908 get_cached_realpaths(void) 1909 { 1910 1911 if (!cached_realpaths) { 1912 cached_realpaths = Targ_NewGN("Realpath"); 1913 #ifndef DEBUG_REALPATH_CACHE 1914 cached_realpaths->flags = INTERNAL; 1915 #endif 1916 } 1917 1918 return cached_realpaths; 1919 } 1920 1921 /* purge any relative paths */ 1922 static void 1923 purge_cached_realpaths(void) 1924 { 1925 GNode *cache = get_cached_realpaths(); 1926 Hash_Entry *he, *nhe; 1927 Hash_Search hs; 1928 1929 he = Hash_EnumFirst(&cache->context, &hs); 1930 while (he) { 1931 nhe = Hash_EnumNext(&hs); 1932 if (he->name[0] != '/') { 1933 if (DEBUG(DIR)) 1934 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1935 Hash_DeleteEntry(&cache->context, he); 1936 } 1937 he = nhe; 1938 } 1939 } 1940 1941 char * 1942 cached_realpath(const char *pathname, char *resolved) 1943 { 1944 GNode *cache; 1945 const char *rp; 1946 char *cp; 1947 1948 if (!pathname || !pathname[0]) 1949 return NULL; 1950 1951 cache = get_cached_realpaths(); 1952 1953 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1954 /* a hit */ 1955 strncpy(resolved, rp, MAXPATHLEN); 1956 resolved[MAXPATHLEN - 1] = '\0'; 1957 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1958 Var_Set(pathname, rp, cache); 1959 } /* else should we negative-cache? */ 1960 1961 bmake_free(cp); 1962 return rp ? resolved : NULL; 1963 } 1964 1965 int 1966 PrintAddr(void *a, void *b) 1967 { 1968 printf("%lx ", (unsigned long) a); 1969 return b ? 0 : 0; 1970 } 1971 1972 1973 static int 1974 addErrorCMD(void *cmdp, void *gnp) 1975 { 1976 if (cmdp == NULL) 1977 return 1; /* stop */ 1978 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1979 return 0; 1980 } 1981 1982 /* 1983 * Return true if we should die without noise. 1984 * For example our failing child was a sub-make 1985 * or failure happend elsewhere. 1986 */ 1987 int 1988 dieQuietly(GNode *gn, int bf) 1989 { 1990 static int quietly = -1; 1991 1992 if (quietly < 0) { 1993 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 1994 quietly = 0; 1995 else if (bf >= 0) 1996 quietly = bf; 1997 else 1998 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 1999 } 2000 return quietly; 2001 } 2002 2003 void 2004 PrintOnError(GNode *gn, const char *s) 2005 { 2006 static GNode *en = NULL; 2007 const char *expr; 2008 char *cp; 2009 2010 if (DEBUG(HASH)) { 2011 Targ_Stats(); 2012 Var_Stats(); 2013 } 2014 2015 /* we generally want to keep quiet if a sub-make died */ 2016 if (dieQuietly(gn, -1)) 2017 return; 2018 2019 if (s) 2020 printf("%s", s); 2021 2022 printf("\n%s: stopped in %s\n", progname, curdir); 2023 2024 if (en) 2025 return; /* we've been here! */ 2026 if (gn) { 2027 /* 2028 * We can print this even if there is no .ERROR target. 2029 */ 2030 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2031 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2032 Lst_ForEach(gn->commands, addErrorCMD, gn); 2033 } 2034 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2035 cp = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2036 if (cp) { 2037 if (*cp) 2038 printf("%s", cp); 2039 free(cp); 2040 } 2041 fflush(stdout); 2042 2043 /* 2044 * Finally, see if there is a .ERROR target, and run it if so. 2045 */ 2046 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2047 if (en) { 2048 en->type |= OP_SPECIAL; 2049 Compat_Make(en, en); 2050 } 2051 } 2052 2053 void 2054 Main_ExportMAKEFLAGS(Boolean first) 2055 { 2056 static int once = 1; 2057 const char *expr; 2058 char *s; 2059 2060 if (once != first) 2061 return; 2062 once = 0; 2063 2064 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2065 s = Var_Subst(expr, VAR_CMD, VARE_WANTRES); 2066 if (s != NULL && s[0] != '\0') { 2067 #ifdef POSIX 2068 setenv("MAKEFLAGS", s, 1); 2069 #else 2070 setenv("MAKE", s, 1); 2071 #endif 2072 } 2073 } 2074 2075 char * 2076 getTmpdir(void) 2077 { 2078 static char *tmpdir = NULL; 2079 2080 if (!tmpdir) { 2081 struct stat st; 2082 2083 /* 2084 * Honor $TMPDIR but only if it is valid. 2085 * Ensure it ends with /. 2086 */ 2087 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2088 VARE_WANTRES); 2089 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2090 free(tmpdir); 2091 tmpdir = bmake_strdup(_PATH_TMP); 2092 } 2093 } 2094 return tmpdir; 2095 } 2096 2097 /* 2098 * Create and open a temp file using "pattern". 2099 * If "fnamep" is provided set it to a copy of the filename created. 2100 * Otherwise unlink the file once open. 2101 */ 2102 int 2103 mkTempFile(const char *pattern, char **fnamep) 2104 { 2105 static char *tmpdir = NULL; 2106 char tfile[MAXPATHLEN]; 2107 int fd; 2108 2109 if (!pattern) 2110 pattern = TMPPAT; 2111 if (!tmpdir) 2112 tmpdir = getTmpdir(); 2113 if (pattern[0] == '/') { 2114 snprintf(tfile, sizeof(tfile), "%s", pattern); 2115 } else { 2116 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2117 } 2118 if ((fd = mkstemp(tfile)) < 0) 2119 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2120 if (fnamep) { 2121 *fnamep = bmake_strdup(tfile); 2122 } else { 2123 unlink(tfile); /* we just want the descriptor */ 2124 } 2125 return fd; 2126 } 2127 2128 /* 2129 * Convert a string representation of a boolean. 2130 * Anything that looks like "No", "False", "Off", "0" etc, 2131 * is FALSE, otherwise TRUE. 2132 */ 2133 Boolean 2134 s2Boolean(const char *s, Boolean bf) 2135 { 2136 if (s) { 2137 switch(*s) { 2138 case '\0': /* not set - the default wins */ 2139 break; 2140 case '0': 2141 case 'F': 2142 case 'f': 2143 case 'N': 2144 case 'n': 2145 bf = FALSE; 2146 break; 2147 case 'O': 2148 case 'o': 2149 switch (s[1]) { 2150 case 'F': 2151 case 'f': 2152 bf = FALSE; 2153 break; 2154 default: 2155 bf = TRUE; 2156 break; 2157 } 2158 break; 2159 default: 2160 bf = TRUE; 2161 break; 2162 } 2163 } 2164 return bf; 2165 } 2166 2167 /* 2168 * Return a Boolean based on setting of a knob. 2169 * 2170 * If the knob is not set, the supplied default is the return value. 2171 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2172 * is FALSE, otherwise TRUE. 2173 */ 2174 Boolean 2175 getBoolean(const char *name, Boolean bf) 2176 { 2177 char tmp[64]; 2178 char *cp; 2179 2180 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2181 cp = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 2182 2183 if (cp) { 2184 bf = s2Boolean(cp, bf); 2185 free(cp); 2186 } 2187 } 2188 return bf; 2189 } 2190
Indexes created Mon Sep 22 13:09:51 GMT 2025