main.c revision 1.324
1 /* $NetBSD: main.c,v 1.324 2020/08/29 08:59:08 rillig Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.324 2020/08/29 08:59:08 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 1.324 2020/08/29 08:59:08 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 void *, const void *); 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 /* Return 0 if reading the makefile failed, for Lst_Find. */ 790 static int 791 ReadMakefileFailed(const void *p, const void *q) 792 { 793 return ReadMakefile(p, q) == 0; 794 } 795 796 int 797 str2Lst_Append(Lst lp, char *str, const char *sep) 798 { 799 char *cp; 800 int n; 801 802 if (!sep) 803 sep = " \t"; 804 805 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 806 Lst_Append(lp, cp); 807 n++; 808 } 809 return n; 810 } 811 812 #ifdef SIGINFO 813 /*ARGSUSED*/ 814 static void 815 siginfo(int signo MAKE_ATTR_UNUSED) 816 { 817 char dir[MAXPATHLEN]; 818 char str[2 * MAXPATHLEN]; 819 int len; 820 if (getcwd(dir, sizeof(dir)) == NULL) 821 return; 822 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 823 if (len > 0) 824 (void)write(STDERR_FILENO, str, (size_t)len); 825 } 826 #endif 827 828 /* 829 * Allow makefiles some control over the mode we run in. 830 */ 831 void 832 MakeMode(const char *mode) 833 { 834 char *mode_freeIt = NULL; 835 836 if (mode == NULL) 837 mode = mode_freeIt = Var_Subst("${" MAKE_MODE ":tl}", 838 VAR_GLOBAL, VARE_WANTRES); 839 840 if (mode[0] != '\0') { 841 if (strstr(mode, "compat")) { 842 compatMake = TRUE; 843 forceJobs = FALSE; 844 } 845 #if USE_META 846 if (strstr(mode, "meta")) 847 meta_mode_init(mode); 848 #endif 849 } 850 851 free(mode_freeIt); 852 } 853 854 static void 855 doPrintVars(void) 856 { 857 LstNode ln; 858 Boolean expandVars; 859 860 if (printVars == EXPAND_VARS) 861 expandVars = TRUE; 862 else if (debugVflag) 863 expandVars = FALSE; 864 else 865 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 866 867 for (ln = Lst_First(variables); ln != NULL; ln = Lst_Succ(ln)) { 868 char *var = Lst_Datum(ln); 869 const char *value; 870 char *p1; 871 872 if (strchr(var, '$')) { 873 value = p1 = Var_Subst(var, VAR_GLOBAL, VARE_WANTRES); 874 } else if (expandVars) { 875 char tmp[128]; 876 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 877 878 if (len >= (int)sizeof(tmp)) 879 Fatal("%s: variable name too big: %s", 880 progname, var); 881 value = p1 = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 882 } else { 883 value = Var_Value(var, VAR_GLOBAL, &p1); 884 } 885 printf("%s\n", value ? value : ""); 886 bmake_free(p1); 887 } 888 } 889 890 static Boolean 891 runTargets(void) 892 { 893 Lst targs; /* target nodes to create -- passed to Make_Init */ 894 Boolean outOfDate; /* FALSE if all targets up to date */ 895 896 /* 897 * Have now read the entire graph and need to make a list of 898 * targets to create. If none was given on the command line, 899 * we consult the parsing module to find the main target(s) 900 * to create. 901 */ 902 if (Lst_IsEmpty(create)) 903 targs = Parse_MainName(); 904 else 905 targs = Targ_FindList(create, TARG_CREATE); 906 907 if (!compatMake) { 908 /* 909 * Initialize job module before traversing the graph 910 * now that any .BEGIN and .END targets have been read. 911 * This is done only if the -q flag wasn't given 912 * (to prevent the .BEGIN from being executed should 913 * it exist). 914 */ 915 if (!queryFlag) { 916 Job_Init(); 917 jobsRunning = TRUE; 918 } 919 920 /* Traverse the graph, checking on all the targets */ 921 outOfDate = Make_Run(targs); 922 } else { 923 /* 924 * Compat_Init will take care of creating all the 925 * targets as well as initializing the module. 926 */ 927 Compat_Run(targs); 928 outOfDate = FALSE; 929 } 930 Lst_Free(targs); 931 return outOfDate; 932 } 933 934 /*- 935 * main -- 936 * The main function, for obvious reasons. Initializes variables 937 * and a few modules, then parses the arguments give it in the 938 * environment and on the command line. Reads the system makefile 939 * followed by either Makefile, makefile or the file given by the 940 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 941 * flags it has received by then uses either the Make or the Compat 942 * module to create the initial list of targets. 943 * 944 * Results: 945 * If -q was given, exits -1 if anything was out-of-date. Else it exits 946 * 0. 947 * 948 * Side Effects: 949 * The program exits when done. Targets are created. etc. etc. etc. 950 */ 951 int 952 main(int argc, char **argv) 953 { 954 Boolean outOfDate; /* FALSE if all targets up to date */ 955 struct stat sb, sa; 956 char *p1, *path; 957 char mdpath[MAXPATHLEN]; 958 const char *machine = getenv("MACHINE"); 959 const char *machine_arch = getenv("MACHINE_ARCH"); 960 char *syspath = getenv("MAKESYSPATH"); 961 Lst sysMkPath; /* Path of sys.mk */ 962 char *cp = NULL, *start; 963 /* avoid faults on read-only strings */ 964 static char defsyspath[] = _PATH_DEFSYSPATH; 965 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 966 struct timeval rightnow; /* to initialize random seed */ 967 struct utsname utsname; 968 969 /* default to writing debug to stderr */ 970 debug_file = stderr; 971 972 #ifdef SIGINFO 973 (void)bmake_signal(SIGINFO, siginfo); 974 #endif 975 /* 976 * Set the seed to produce a different random sequence 977 * on each program execution. 978 */ 979 gettimeofday(&rightnow, NULL); 980 srandom(rightnow.tv_sec + rightnow.tv_usec); 981 982 if ((progname = strrchr(argv[0], '/')) != NULL) 983 progname++; 984 else 985 progname = argv[0]; 986 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 987 /* 988 * get rid of resource limit on file descriptors 989 */ 990 { 991 struct rlimit rl; 992 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 993 rl.rlim_cur != rl.rlim_max) { 994 rl.rlim_cur = rl.rlim_max; 995 (void)setrlimit(RLIMIT_NOFILE, &rl); 996 } 997 } 998 #endif 999 1000 if (uname(&utsname) == -1) { 1001 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1002 strerror(errno)); 1003 exit(2); 1004 } 1005 1006 /* 1007 * Get the name of this type of MACHINE from utsname 1008 * so we can share an executable for similar machines. 1009 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1010 * 1011 * Note that both MACHINE and MACHINE_ARCH are decided at 1012 * run-time. 1013 */ 1014 if (!machine) { 1015 #ifdef MAKE_NATIVE 1016 machine = utsname.machine; 1017 #else 1018 #ifdef MAKE_MACHINE 1019 machine = MAKE_MACHINE; 1020 #else 1021 machine = "unknown"; 1022 #endif 1023 #endif 1024 } 1025 1026 if (!machine_arch) { 1027 #ifdef MAKE_NATIVE 1028 static char machine_arch_buf[sizeof(utsname.machine)]; 1029 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1030 size_t len = sizeof(machine_arch_buf); 1031 1032 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1033 &len, NULL, 0) < 0) { 1034 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1035 strerror(errno)); 1036 exit(2); 1037 } 1038 1039 machine_arch = machine_arch_buf; 1040 #else 1041 #ifndef MACHINE_ARCH 1042 #ifdef MAKE_MACHINE_ARCH 1043 machine_arch = MAKE_MACHINE_ARCH; 1044 #else 1045 machine_arch = "unknown"; 1046 #endif 1047 #else 1048 machine_arch = MACHINE_ARCH; 1049 #endif 1050 #endif 1051 } 1052 1053 myPid = getpid(); /* remember this for vFork() */ 1054 1055 /* 1056 * Just in case MAKEOBJDIR wants us to do something tricky. 1057 */ 1058 Var_Init(); /* Initialize the lists of variables for 1059 * parsing arguments */ 1060 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1061 Var_Set("MACHINE", machine, VAR_GLOBAL); 1062 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1063 #ifdef MAKE_VERSION 1064 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1065 #endif 1066 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1067 /* 1068 * This is the traditional preference for makefiles. 1069 */ 1070 #ifndef MAKEFILE_PREFERENCE_LIST 1071 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1072 #endif 1073 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1074 VAR_GLOBAL); 1075 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1076 1077 create = Lst_Init(); 1078 makefiles = Lst_Init(); 1079 printVars = 0; 1080 debugVflag = FALSE; 1081 variables = Lst_Init(); 1082 beSilent = FALSE; /* Print commands as executed */ 1083 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1084 noExecute = FALSE; /* Execute all commands */ 1085 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1086 keepgoing = FALSE; /* Stop on error */ 1087 allPrecious = FALSE; /* Remove targets when interrupted */ 1088 deleteOnError = FALSE; /* Historical default behavior */ 1089 queryFlag = FALSE; /* This is not just a check-run */ 1090 noBuiltins = FALSE; /* Read the built-in rules */ 1091 touchFlag = FALSE; /* Actually update targets */ 1092 debug = 0; /* No debug verbosity, please. */ 1093 jobsRunning = FALSE; 1094 1095 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1096 maxJobTokens = maxJobs; 1097 compatMake = FALSE; /* No compat mode */ 1098 ignorePWD = FALSE; 1099 1100 /* 1101 * Initialize the parsing, directory and variable modules to prepare 1102 * for the reading of inclusion paths and variable settings on the 1103 * command line 1104 */ 1105 1106 /* 1107 * Initialize various variables. 1108 * MAKE also gets this name, for compatibility 1109 * .MAKEFLAGS gets set to the empty string just in case. 1110 * MFLAGS also gets initialized empty, for compatibility. 1111 */ 1112 Parse_Init(); 1113 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1114 /* 1115 * Leave alone if it is an absolute path, or if it does 1116 * not contain a '/' in which case we need to find it in 1117 * the path, like execvp(3) and the shells do. 1118 */ 1119 p1 = argv[0]; 1120 } else { 1121 /* 1122 * A relative path, canonicalize it. 1123 */ 1124 p1 = cached_realpath(argv[0], mdpath); 1125 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1126 p1 = argv[0]; /* realpath failed */ 1127 } 1128 } 1129 Var_Set("MAKE", p1, VAR_GLOBAL); 1130 Var_Set(".MAKE", p1, VAR_GLOBAL); 1131 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1132 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1133 Var_Set("MFLAGS", "", VAR_GLOBAL); 1134 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1135 /* some makefiles need to know this */ 1136 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1137 1138 /* 1139 * Set some other useful macros 1140 */ 1141 { 1142 char tmp[64], *ep; 1143 1144 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1145 if (makelevel < 0) 1146 makelevel = 0; 1147 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1148 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1149 snprintf(tmp, sizeof(tmp), "%u", myPid); 1150 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1151 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1152 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1153 } 1154 if (makelevel > 0) { 1155 char pn[1024]; 1156 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1157 progname = bmake_strdup(pn); 1158 } 1159 1160 #ifdef USE_META 1161 meta_init(); 1162 #endif 1163 Dir_Init(); 1164 1165 /* 1166 * First snag any flags out of the MAKE environment variable. 1167 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1168 * in a different format). 1169 */ 1170 #ifdef POSIX 1171 p1 = explode(getenv("MAKEFLAGS")); 1172 Main_ParseArgLine(p1); 1173 free(p1); 1174 #else 1175 Main_ParseArgLine(getenv("MAKE")); 1176 #endif 1177 1178 /* 1179 * Find where we are (now). 1180 * We take care of PWD for the automounter below... 1181 */ 1182 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1183 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1184 progname, strerror(errno)); 1185 exit(2); 1186 } 1187 1188 MainParseArgs(argc, argv); 1189 1190 if (enterFlag) 1191 printf("%s: Entering directory `%s'\n", progname, curdir); 1192 1193 /* 1194 * Verify that cwd is sane. 1195 */ 1196 if (stat(curdir, &sa) == -1) { 1197 (void)fprintf(stderr, "%s: %s: %s.\n", 1198 progname, curdir, strerror(errno)); 1199 exit(2); 1200 } 1201 1202 /* 1203 * All this code is so that we know where we are when we start up 1204 * on a different machine with pmake. 1205 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1206 * since the value of curdir can vary depending on how we got 1207 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1208 * or via subdir.mk in which case its likely a shell which does 1209 * not provide it. 1210 * So, to stop it breaking this case only, we ignore PWD if 1211 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1212 */ 1213 #ifndef NO_PWD_OVERRIDE 1214 if (!ignorePWD) { 1215 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1216 1217 if ((pwd = getenv("PWD")) != NULL && 1218 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1219 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1220 VAR_CMD, &ptmp2); 1221 1222 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1223 if (stat(pwd, &sb) == 0 && 1224 sa.st_ino == sb.st_ino && 1225 sa.st_dev == sb.st_dev) 1226 (void)strncpy(curdir, pwd, MAXPATHLEN); 1227 } 1228 } 1229 bmake_free(ptmp1); 1230 bmake_free(ptmp2); 1231 } 1232 #endif 1233 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1234 1235 /* 1236 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1237 * MAKEOBJDIR is set in the environment, try only that value 1238 * and fall back to .CURDIR if it does not exist. 1239 * 1240 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1241 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1242 * of these paths exist, just use .CURDIR. 1243 */ 1244 Dir_InitDir(curdir); 1245 (void)Main_SetObjdir("%s", curdir); 1246 1247 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1248 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1249 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1250 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1251 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1252 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1253 1254 /* 1255 * Initialize archive, target and suffix modules in preparation for 1256 * parsing the makefile(s) 1257 */ 1258 Arch_Init(); 1259 Targ_Init(); 1260 Suff_Init(); 1261 Trace_Init(tracefile); 1262 1263 DEFAULT = NULL; 1264 (void)time(&now); 1265 1266 Trace_Log(MAKESTART, NULL); 1267 1268 /* 1269 * Set up the .TARGETS variable to contain the list of targets to be 1270 * created. If none specified, make the variable empty -- the parser 1271 * will fill the thing in with the default or .MAIN target. 1272 */ 1273 if (!Lst_IsEmpty(create)) { 1274 LstNode ln; 1275 1276 for (ln = Lst_First(create); ln != NULL; ln = Lst_Succ(ln)) { 1277 char *name = Lst_Datum(ln); 1278 Var_Append(".TARGETS", name, VAR_GLOBAL); 1279 } 1280 } else 1281 Var_Set(".TARGETS", "", VAR_GLOBAL); 1282 1283 1284 /* 1285 * If no user-supplied system path was given (through the -m option) 1286 * add the directories from the DEFSYSPATH (more than one may be given 1287 * as dir1:...:dirn) to the system include path. 1288 */ 1289 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1290 if (syspath == NULL || syspath[0] == '\0') 1291 syspath = defsyspath; 1292 else 1293 syspath = bmake_strdup(syspath); 1294 1295 for (start = syspath; *start != '\0'; start = cp) { 1296 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1297 continue; 1298 if (*cp == ':') { 1299 *cp++ = '\0'; 1300 } 1301 /* look for magic parent directory search string */ 1302 if (strncmp(".../", start, 4) != 0) { 1303 (void)Dir_AddDir(defIncPath, start); 1304 } else { 1305 if (Dir_FindHereOrAbove(curdir, start+4, 1306 found_path, sizeof(found_path))) { 1307 (void)Dir_AddDir(defIncPath, found_path); 1308 } 1309 } 1310 } 1311 if (syspath != defsyspath) 1312 free(syspath); 1313 1314 /* 1315 * Read in the built-in rules first, followed by the specified 1316 * makefile, if it was (makefile != NULL), or the default 1317 * makefile and Makefile, in that order, if it wasn't. 1318 */ 1319 if (!noBuiltins) { 1320 LstNode ln; 1321 1322 sysMkPath = Lst_Init(); 1323 Dir_Expand(_PATH_DEFSYSMK, 1324 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1325 sysMkPath); 1326 if (Lst_IsEmpty(sysMkPath)) 1327 Fatal("%s: no system rules (%s).", progname, 1328 _PATH_DEFSYSMK); 1329 ln = Lst_Find(sysMkPath, ReadMakefile, NULL); 1330 if (ln == NULL) 1331 Fatal("%s: cannot open %s.", progname, 1332 (char *)Lst_Datum(Lst_First(sysMkPath))); 1333 } 1334 1335 if (!Lst_IsEmpty(makefiles)) { 1336 LstNode ln; 1337 1338 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1339 if (ln != NULL) 1340 Fatal("%s: cannot open %s.", progname, 1341 (char *)Lst_Datum(ln)); 1342 } else { 1343 p1 = Var_Subst("${" MAKEFILE_PREFERENCE "}", 1344 VAR_CMD, VARE_WANTRES); 1345 if (p1) { 1346 (void)str2Lst_Append(makefiles, p1, NULL); 1347 (void)Lst_Find(makefiles, ReadMakefile, NULL); 1348 free(p1); 1349 } 1350 } 1351 1352 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1353 if (!noBuiltins || !printVars) { 1354 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE:T}", 1355 VAR_CMD, VARE_WANTRES); 1356 doing_depend = TRUE; 1357 (void)ReadMakefile(makeDependfile, NULL); 1358 doing_depend = FALSE; 1359 } 1360 1361 if (enterFlagObj) 1362 printf("%s: Entering directory `%s'\n", progname, objdir); 1363 1364 MakeMode(NULL); 1365 1366 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1367 bmake_free(p1); 1368 1369 if (!forceJobs && !compatMake && 1370 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1371 char *value; 1372 int n; 1373 1374 value = Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES); 1375 n = strtol(value, NULL, 0); 1376 if (n < 1) { 1377 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1378 progname); 1379 exit(1); 1380 } 1381 if (n != maxJobs) { 1382 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1383 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1384 } 1385 maxJobs = n; 1386 maxJobTokens = maxJobs; 1387 forceJobs = TRUE; 1388 free(value); 1389 } 1390 1391 /* 1392 * Be compatible if user did not specify -j and did not explicitly 1393 * turned compatibility on 1394 */ 1395 if (!compatMake && !forceJobs) { 1396 compatMake = TRUE; 1397 } 1398 1399 if (!compatMake) 1400 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1401 if (DEBUG(JOB)) 1402 fprintf(debug_file, 1403 "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1404 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1405 1406 if (!printVars) 1407 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1408 1409 1410 /* 1411 * For compatibility, look at the directories in the VPATH variable 1412 * and add them to the search path, if the variable is defined. The 1413 * variable's value is in the same format as the PATH envariable, i.e. 1414 * <directory>:<directory>:<directory>... 1415 */ 1416 if (Var_Exists("VPATH", VAR_CMD)) { 1417 char *vpath, savec; 1418 /* 1419 * GCC stores string constants in read-only memory, but 1420 * Var_Subst will want to write this thing, so store it 1421 * in an array 1422 */ 1423 static char VPATH[] = "${VPATH}"; 1424 1425 vpath = Var_Subst(VPATH, VAR_CMD, VARE_WANTRES); 1426 path = vpath; 1427 do { 1428 /* skip to end of directory */ 1429 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1430 continue; 1431 /* Save terminator character so know when to stop */ 1432 savec = *cp; 1433 *cp = '\0'; 1434 /* Add directory to search path */ 1435 (void)Dir_AddDir(dirSearchPath, path); 1436 *cp = savec; 1437 path = cp + 1; 1438 } while (savec == ':'); 1439 free(vpath); 1440 } 1441 1442 /* 1443 * Now that all search paths have been read for suffixes et al, it's 1444 * time to add the default search path to their lists... 1445 */ 1446 Suff_DoPaths(); 1447 1448 /* 1449 * Propagate attributes through :: dependency lists. 1450 */ 1451 Targ_Propagate(); 1452 1453 /* print the initial graph, if the user requested it */ 1454 if (DEBUG(GRAPH1)) 1455 Targ_PrintGraph(1); 1456 1457 /* print the values of any variables requested by the user */ 1458 if (printVars) { 1459 doPrintVars(); 1460 outOfDate = FALSE; 1461 } else { 1462 outOfDate = runTargets(); 1463 } 1464 1465 #ifdef CLEANUP 1466 Lst_Free(variables); 1467 Lst_Free(makefiles); 1468 Lst_Destroy(create, free); 1469 #endif 1470 1471 /* print the graph now it's been processed if the user requested it */ 1472 if (DEBUG(GRAPH2)) 1473 Targ_PrintGraph(2); 1474 1475 Trace_Log(MAKEEND, 0); 1476 1477 if (enterFlagObj) 1478 printf("%s: Leaving directory `%s'\n", progname, objdir); 1479 if (enterFlag) 1480 printf("%s: Leaving directory `%s'\n", progname, curdir); 1481 1482 #ifdef USE_META 1483 meta_finish(); 1484 #endif 1485 Suff_End(); 1486 Targ_End(); 1487 Arch_End(); 1488 Var_End(); 1489 Parse_End(); 1490 Dir_End(); 1491 Job_End(); 1492 Trace_End(); 1493 1494 return outOfDate ? 1 : 0; 1495 } 1496 1497 /* Open and parse the given makefile, with all its side effects. 1498 * 1499 * Results: 1500 * 0 if ok. -1 if couldn't open file. 1501 */ 1502 static int 1503 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1504 { 1505 const char *fname = p; /* makefile to read */ 1506 int fd; 1507 char *name, *path = NULL; 1508 1509 if (!strcmp(fname, "-")) { 1510 Parse_File(NULL /*stdin*/, -1); 1511 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1512 } else { 1513 /* if we've chdir'd, rebuild the path name */ 1514 if (strcmp(curdir, objdir) && *fname != '/') { 1515 path = str_concat3(curdir, "/", fname); 1516 fd = open(path, O_RDONLY); 1517 if (fd != -1) { 1518 fname = path; 1519 goto found; 1520 } 1521 free(path); 1522 1523 /* If curdir failed, try objdir (ala .depend) */ 1524 path = str_concat3(objdir, "/", fname); 1525 fd = open(path, O_RDONLY); 1526 if (fd != -1) { 1527 fname = path; 1528 goto found; 1529 } 1530 } else { 1531 fd = open(fname, O_RDONLY); 1532 if (fd != -1) 1533 goto found; 1534 } 1535 /* look in -I and system include directories. */ 1536 name = Dir_FindFile(fname, parseIncPath); 1537 if (!name) 1538 name = Dir_FindFile(fname, 1539 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1540 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1541 free(name); 1542 free(path); 1543 return -1; 1544 } 1545 fname = name; 1546 /* 1547 * set the MAKEFILE variable desired by System V fans -- the 1548 * placement of the setting here means it gets set to the last 1549 * makefile specified, as it is set by SysV make. 1550 */ 1551 found: 1552 if (!doing_depend) 1553 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1554 Parse_File(fname, fd); 1555 } 1556 free(path); 1557 return 0; 1558 } 1559 1560 1561 1562 /*- 1563 * Cmd_Exec -- 1564 * Execute the command in cmd, and return the output of that command 1565 * in a string. In the output, newlines are replaced with spaces. 1566 * 1567 * Results: 1568 * A string containing the output of the command, or the empty string. 1569 * *errfmt returns a format string describing the command failure, 1570 * if any, using a single %s conversion specification. 1571 * 1572 * Side Effects: 1573 * The string must be freed by the caller. 1574 */ 1575 char * 1576 Cmd_Exec(const char *cmd, const char **errfmt) 1577 { 1578 const char *args[4]; /* Args for invoking the shell */ 1579 int fds[2]; /* Pipe streams */ 1580 int cpid; /* Child PID */ 1581 int pid; /* PID from wait() */ 1582 int status; /* command exit status */ 1583 Buffer buf; /* buffer to store the result */ 1584 ssize_t bytes_read; 1585 char *res; /* result */ 1586 size_t res_len; 1587 char *cp; 1588 int savederr; /* saved errno */ 1589 1590 *errfmt = NULL; 1591 1592 if (!shellName) 1593 Shell_Init(); 1594 /* 1595 * Set up arguments for shell 1596 */ 1597 args[0] = shellName; 1598 args[1] = "-c"; 1599 args[2] = cmd; 1600 args[3] = NULL; 1601 1602 /* 1603 * Open a pipe for fetching its output 1604 */ 1605 if (pipe(fds) == -1) { 1606 *errfmt = "Couldn't create pipe for \"%s\""; 1607 goto bad; 1608 } 1609 1610 /* 1611 * Fork 1612 */ 1613 switch (cpid = vFork()) { 1614 case 0: 1615 /* 1616 * Close input side of pipe 1617 */ 1618 (void)close(fds[0]); 1619 1620 /* 1621 * Duplicate the output stream to the shell's output, then 1622 * shut the extra thing down. Note we don't fetch the error 1623 * stream...why not? Why? 1624 */ 1625 (void)dup2(fds[1], 1); 1626 (void)close(fds[1]); 1627 1628 Var_ExportVars(); 1629 1630 (void)execv(shellPath, UNCONST(args)); 1631 _exit(1); 1632 /*NOTREACHED*/ 1633 1634 case -1: 1635 *errfmt = "Couldn't exec \"%s\""; 1636 goto bad; 1637 1638 default: 1639 /* 1640 * No need for the writing half 1641 */ 1642 (void)close(fds[1]); 1643 1644 savederr = 0; 1645 Buf_Init(&buf, 0); 1646 1647 do { 1648 char result[BUFSIZ]; 1649 bytes_read = read(fds[0], result, sizeof(result)); 1650 if (bytes_read > 0) 1651 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1652 } 1653 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1654 if (bytes_read == -1) 1655 savederr = errno; 1656 1657 /* 1658 * Close the input side of the pipe. 1659 */ 1660 (void)close(fds[0]); 1661 1662 /* 1663 * Wait for the process to exit. 1664 */ 1665 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1666 JobReapChild(pid, status, FALSE); 1667 continue; 1668 } 1669 res_len = Buf_Size(&buf); 1670 res = Buf_Destroy(&buf, FALSE); 1671 1672 if (savederr != 0) 1673 *errfmt = "Couldn't read shell's output for \"%s\""; 1674 1675 if (WIFSIGNALED(status)) 1676 *errfmt = "\"%s\" exited on a signal"; 1677 else if (WEXITSTATUS(status) != 0) 1678 *errfmt = "\"%s\" returned non-zero status"; 1679 1680 /* Convert newlines to spaces. A final newline is just stripped */ 1681 if (res_len > 0 && res[res_len - 1] == '\n') 1682 res[res_len - 1] = '\0'; 1683 for (cp = res; *cp != '\0'; cp++) 1684 if (*cp == '\n') 1685 *cp = ' '; 1686 break; 1687 } 1688 return res; 1689 bad: 1690 return bmake_strdup(""); 1691 } 1692 1693 /*- 1694 * Error -- 1695 * Print an error message given its format. 1696 * 1697 * Results: 1698 * None. 1699 * 1700 * Side Effects: 1701 * The message is printed. 1702 */ 1703 /* VARARGS */ 1704 void 1705 Error(const char *fmt, ...) 1706 { 1707 va_list ap; 1708 FILE *err_file; 1709 1710 err_file = debug_file; 1711 if (err_file == stdout) 1712 err_file = stderr; 1713 (void)fflush(stdout); 1714 for (;;) { 1715 va_start(ap, fmt); 1716 fprintf(err_file, "%s: ", progname); 1717 (void)vfprintf(err_file, fmt, ap); 1718 va_end(ap); 1719 (void)fprintf(err_file, "\n"); 1720 (void)fflush(err_file); 1721 if (err_file == stderr) 1722 break; 1723 err_file = stderr; 1724 } 1725 } 1726 1727 /*- 1728 * Fatal -- 1729 * Produce a Fatal error message. If jobs are running, waits for them 1730 * to finish. 1731 * 1732 * Results: 1733 * None 1734 * 1735 * Side Effects: 1736 * The program exits 1737 */ 1738 /* VARARGS */ 1739 void 1740 Fatal(const char *fmt, ...) 1741 { 1742 va_list ap; 1743 1744 va_start(ap, fmt); 1745 if (jobsRunning) 1746 Job_Wait(); 1747 1748 (void)fflush(stdout); 1749 (void)vfprintf(stderr, fmt, ap); 1750 va_end(ap); 1751 (void)fprintf(stderr, "\n"); 1752 (void)fflush(stderr); 1753 1754 PrintOnError(NULL, NULL); 1755 1756 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1757 Targ_PrintGraph(2); 1758 Trace_Log(MAKEERROR, 0); 1759 exit(2); /* Not 1 so -q can distinguish error */ 1760 } 1761 1762 /* 1763 * Punt -- 1764 * Major exception once jobs are being created. Kills all jobs, prints 1765 * a message and exits. 1766 * 1767 * Results: 1768 * None 1769 * 1770 * Side Effects: 1771 * All children are killed indiscriminately and the program Lib_Exits 1772 */ 1773 /* VARARGS */ 1774 void 1775 Punt(const char *fmt, ...) 1776 { 1777 va_list ap; 1778 1779 va_start(ap, fmt); 1780 (void)fflush(stdout); 1781 (void)fprintf(stderr, "%s: ", progname); 1782 (void)vfprintf(stderr, fmt, ap); 1783 va_end(ap); 1784 (void)fprintf(stderr, "\n"); 1785 (void)fflush(stderr); 1786 1787 PrintOnError(NULL, NULL); 1788 1789 DieHorribly(); 1790 } 1791 1792 /*- 1793 * DieHorribly -- 1794 * Exit without giving a message. 1795 * 1796 * Results: 1797 * None 1798 * 1799 * Side Effects: 1800 * A big one... 1801 */ 1802 void 1803 DieHorribly(void) 1804 { 1805 if (jobsRunning) 1806 Job_AbortAll(); 1807 if (DEBUG(GRAPH2)) 1808 Targ_PrintGraph(2); 1809 Trace_Log(MAKEERROR, 0); 1810 exit(2); /* Not 1, so -q can distinguish error */ 1811 } 1812 1813 /* 1814 * Finish -- 1815 * Called when aborting due to errors in child shell to signal 1816 * abnormal exit. 1817 * 1818 * Results: 1819 * None 1820 * 1821 * Side Effects: 1822 * The program exits 1823 */ 1824 void 1825 Finish(int errors) 1826 /* number of errors encountered in Make_Make */ 1827 { 1828 if (dieQuietly(NULL, -1)) 1829 exit(2); 1830 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1831 } 1832 1833 /* 1834 * eunlink -- 1835 * Remove a file carefully, avoiding directories. 1836 */ 1837 int 1838 eunlink(const char *file) 1839 { 1840 struct stat st; 1841 1842 if (lstat(file, &st) == -1) 1843 return -1; 1844 1845 if (S_ISDIR(st.st_mode)) { 1846 errno = EISDIR; 1847 return -1; 1848 } 1849 return unlink(file); 1850 } 1851 1852 /* 1853 * execError -- 1854 * Print why exec failed, avoiding stdio. 1855 */ 1856 void 1857 execError(const char *af, const char *av) 1858 { 1859 #ifdef USE_IOVEC 1860 int i = 0; 1861 struct iovec iov[8]; 1862 #define IOADD(s) \ 1863 (void)(iov[i].iov_base = UNCONST(s), \ 1864 iov[i].iov_len = strlen(iov[i].iov_base), \ 1865 i++) 1866 #else 1867 #define IOADD(void)write(2, s, strlen(s)) 1868 #endif 1869 1870 IOADD(progname); 1871 IOADD(": "); 1872 IOADD(af); 1873 IOADD("("); 1874 IOADD(av); 1875 IOADD(") failed ("); 1876 IOADD(strerror(errno)); 1877 IOADD(")\n"); 1878 1879 #ifdef USE_IOVEC 1880 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1881 continue; 1882 #endif 1883 } 1884 1885 /* 1886 * usage -- 1887 * exit with usage message 1888 */ 1889 static void 1890 usage(void) 1891 { 1892 char *p; 1893 if ((p = strchr(progname, '[')) != NULL) 1894 *p = '\0'; 1895 1896 (void)fprintf(stderr, 1897 "usage: %s [-BeikNnqrstWwX] \n" 1898 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1899 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1900 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1901 progname); 1902 exit(2); 1903 } 1904 1905 /* 1906 * realpath(3) can get expensive, cache results... 1907 */ 1908 static GNode *cached_realpaths = NULL; 1909 1910 static GNode * 1911 get_cached_realpaths(void) 1912 { 1913 1914 if (!cached_realpaths) { 1915 cached_realpaths = Targ_NewGN("Realpath"); 1916 #ifndef DEBUG_REALPATH_CACHE 1917 cached_realpaths->flags = INTERNAL; 1918 #endif 1919 } 1920 1921 return cached_realpaths; 1922 } 1923 1924 /* purge any relative paths */ 1925 static void 1926 purge_cached_realpaths(void) 1927 { 1928 GNode *cache = get_cached_realpaths(); 1929 Hash_Entry *he, *nhe; 1930 Hash_Search hs; 1931 1932 he = Hash_EnumFirst(&cache->context, &hs); 1933 while (he) { 1934 nhe = Hash_EnumNext(&hs); 1935 if (he->name[0] != '/') { 1936 if (DEBUG(DIR)) 1937 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1938 Hash_DeleteEntry(&cache->context, he); 1939 } 1940 he = nhe; 1941 } 1942 } 1943 1944 char * 1945 cached_realpath(const char *pathname, char *resolved) 1946 { 1947 GNode *cache; 1948 const char *rp; 1949 char *cp; 1950 1951 if (!pathname || !pathname[0]) 1952 return NULL; 1953 1954 cache = get_cached_realpaths(); 1955 1956 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1957 /* a hit */ 1958 strncpy(resolved, rp, MAXPATHLEN); 1959 resolved[MAXPATHLEN - 1] = '\0'; 1960 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1961 Var_Set(pathname, rp, cache); 1962 } /* else should we negative-cache? */ 1963 1964 bmake_free(cp); 1965 return rp ? resolved : NULL; 1966 } 1967 1968 int 1969 PrintAddr(void *a, void *b) 1970 { 1971 printf("%lx ", (unsigned long) a); 1972 return b ? 0 : 0; 1973 } 1974 1975 1976 static int 1977 addErrorCMD(void *cmdp, void *gnp) 1978 { 1979 if (cmdp == NULL) 1980 return 1; /* stop */ 1981 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1982 return 0; 1983 } 1984 1985 /* 1986 * Return true if we should die without noise. 1987 * For example our failing child was a sub-make 1988 * or failure happend elsewhere. 1989 */ 1990 int 1991 dieQuietly(GNode *gn, int bf) 1992 { 1993 static int quietly = -1; 1994 1995 if (quietly < 0) { 1996 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 1997 quietly = 0; 1998 else if (bf >= 0) 1999 quietly = bf; 2000 else 2001 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2002 } 2003 return quietly; 2004 } 2005 2006 void 2007 PrintOnError(GNode *gn, const char *s) 2008 { 2009 static GNode *en = NULL; 2010 const char *expr; 2011 char *cp; 2012 2013 if (DEBUG(HASH)) { 2014 Targ_Stats(); 2015 Var_Stats(); 2016 } 2017 2018 /* we generally want to keep quiet if a sub-make died */ 2019 if (dieQuietly(gn, -1)) 2020 return; 2021 2022 if (s) 2023 printf("%s", s); 2024 2025 printf("\n%s: stopped in %s\n", progname, curdir); 2026 2027 if (en) 2028 return; /* we've been here! */ 2029 if (gn) { 2030 /* 2031 * We can print this even if there is no .ERROR target. 2032 */ 2033 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2034 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2035 Lst_ForEach(gn->commands, addErrorCMD, gn); 2036 } 2037 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2038 cp = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2039 if (cp) { 2040 if (*cp) 2041 printf("%s", cp); 2042 free(cp); 2043 } 2044 fflush(stdout); 2045 2046 /* 2047 * Finally, see if there is a .ERROR target, and run it if so. 2048 */ 2049 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2050 if (en) { 2051 en->type |= OP_SPECIAL; 2052 Compat_Make(en, en); 2053 } 2054 } 2055 2056 void 2057 Main_ExportMAKEFLAGS(Boolean first) 2058 { 2059 static Boolean once = TRUE; 2060 const char *expr; 2061 char *s; 2062 2063 if (once != first) 2064 return; 2065 once = FALSE; 2066 2067 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2068 s = Var_Subst(expr, VAR_CMD, VARE_WANTRES); 2069 if (s[0] != '\0') { 2070 #ifdef POSIX 2071 setenv("MAKEFLAGS", s, 1); 2072 #else 2073 setenv("MAKE", s, 1); 2074 #endif 2075 } 2076 } 2077 2078 char * 2079 getTmpdir(void) 2080 { 2081 static char *tmpdir = NULL; 2082 2083 if (!tmpdir) { 2084 struct stat st; 2085 2086 /* 2087 * Honor $TMPDIR but only if it is valid. 2088 * Ensure it ends with /. 2089 */ 2090 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2091 VARE_WANTRES); 2092 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2093 free(tmpdir); 2094 tmpdir = bmake_strdup(_PATH_TMP); 2095 } 2096 } 2097 return tmpdir; 2098 } 2099 2100 /* 2101 * Create and open a temp file using "pattern". 2102 * If "fnamep" is provided set it to a copy of the filename created. 2103 * Otherwise unlink the file once open. 2104 */ 2105 int 2106 mkTempFile(const char *pattern, char **fnamep) 2107 { 2108 static char *tmpdir = NULL; 2109 char tfile[MAXPATHLEN]; 2110 int fd; 2111 2112 if (!pattern) 2113 pattern = TMPPAT; 2114 if (!tmpdir) 2115 tmpdir = getTmpdir(); 2116 if (pattern[0] == '/') { 2117 snprintf(tfile, sizeof(tfile), "%s", pattern); 2118 } else { 2119 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2120 } 2121 if ((fd = mkstemp(tfile)) < 0) 2122 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2123 if (fnamep) { 2124 *fnamep = bmake_strdup(tfile); 2125 } else { 2126 unlink(tfile); /* we just want the descriptor */ 2127 } 2128 return fd; 2129 } 2130 2131 /* 2132 * Convert a string representation of a boolean. 2133 * Anything that looks like "No", "False", "Off", "0" etc, 2134 * is FALSE, otherwise TRUE. 2135 */ 2136 Boolean 2137 s2Boolean(const char *s, Boolean bf) 2138 { 2139 if (s) { 2140 switch(*s) { 2141 case '\0': /* not set - the default wins */ 2142 break; 2143 case '0': 2144 case 'F': 2145 case 'f': 2146 case 'N': 2147 case 'n': 2148 bf = FALSE; 2149 break; 2150 case 'O': 2151 case 'o': 2152 switch (s[1]) { 2153 case 'F': 2154 case 'f': 2155 bf = FALSE; 2156 break; 2157 default: 2158 bf = TRUE; 2159 break; 2160 } 2161 break; 2162 default: 2163 bf = TRUE; 2164 break; 2165 } 2166 } 2167 return bf; 2168 } 2169 2170 /* 2171 * Return a Boolean based on setting of a knob. 2172 * 2173 * If the knob is not set, the supplied default is the return value. 2174 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2175 * is FALSE, otherwise TRUE. 2176 */ 2177 Boolean 2178 getBoolean(const char *name, Boolean bf) 2179 { 2180 char tmp[64]; 2181 char *cp; 2182 2183 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2184 cp = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 2185 2186 if (cp) { 2187 bf = s2Boolean(cp, bf); 2188 free(cp); 2189 } 2190 } 2191 return bf; 2192 } 2193
Indexes created Wed Sep 24 05:09:52 GMT 2025