main.c revision 1.280
1 /* $NetBSD: main.c,v 1.280 2020/07/18 21:37:38 sjg 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 1.280 2020/07/18 21:37:38 sjg 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 1.280 2020/07/18 21:37:38 sjg 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 <errno.h> 128 #include <signal.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 #include <ctype.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 Boolean jobServer; /* -J 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; 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_LOUD; 289 break; 290 case 'M': 291 debug |= DEBUG_META; 292 break; 293 case 'm': 294 debug |= DEBUG_MAKE; 295 break; 296 case 'n': 297 debug |= DEBUG_SCRIPT; 298 break; 299 case 'p': 300 debug |= DEBUG_PARSE; 301 break; 302 case 's': 303 debug |= DEBUG_SUFF; 304 break; 305 case 't': 306 debug |= DEBUG_TARG; 307 break; 308 case 'V': 309 debugVflag = TRUE; 310 break; 311 case 'v': 312 debug |= DEBUG_VAR; 313 break; 314 case 'x': 315 debug |= DEBUG_SHELL; 316 break; 317 case 'F': 318 if (debug_file != stdout && debug_file != stderr) 319 fclose(debug_file); 320 if (*++modules == '+') { 321 modules++; 322 mode = "a"; 323 } else 324 mode = "w"; 325 if (strcmp(modules, "stdout") == 0) { 326 debug_file = stdout; 327 goto debug_setbuf; 328 } 329 if (strcmp(modules, "stderr") == 0) { 330 debug_file = stderr; 331 goto debug_setbuf; 332 } 333 len = strlen(modules); 334 fname = bmake_malloc(len + 20); 335 memcpy(fname, modules, len + 1); 336 /* Let the filename be modified by the pid */ 337 if (strcmp(fname + len - 3, ".%d") == 0) 338 snprintf(fname + len - 2, 20, "%d", getpid()); 339 debug_file = fopen(fname, mode); 340 if (!debug_file) { 341 fprintf(stderr, "Cannot open debug file %s\n", 342 fname); 343 usage(); 344 } 345 free(fname); 346 goto debug_setbuf; 347 default: 348 (void)fprintf(stderr, 349 "%s: illegal argument to d option -- %c\n", 350 progname, *modules); 351 usage(); 352 } 353 } 354 debug_setbuf: 355 /* 356 * Make the debug_file unbuffered, and make 357 * stdout line buffered (unless debugfile == stdout). 358 */ 359 setvbuf(debug_file, NULL, _IONBF, 0); 360 if (debug_file != stdout) { 361 setvbuf(stdout, NULL, _IOLBF, 0); 362 } 363 } 364 365 /* 366 * does path contain any relative components 367 */ 368 static int 369 is_relpath(const char *path) 370 { 371 const char *cp; 372 373 if (path[0] != '/') 374 return TRUE; 375 cp = path; 376 do { 377 cp = strstr(cp, "/."); 378 if (!cp) 379 break; 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 } while (cp); 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 int 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 jobServer = TRUE; 525 } 526 break; 527 case 'N': 528 noExecute = TRUE; 529 noRecursiveExecute = TRUE; 530 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 531 break; 532 case 'S': 533 keepgoing = FALSE; 534 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 535 break; 536 case 'T': 537 if (argvalue == NULL) goto noarg; 538 tracefile = bmake_strdup(argvalue); 539 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 540 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 541 break; 542 case 'V': 543 case 'v': 544 if (argvalue == NULL) goto noarg; 545 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 546 (void)Lst_AtEnd(variables, argvalue); 547 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 548 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 549 break; 550 case 'W': 551 parseWarnFatal = TRUE; 552 break; 553 case 'X': 554 varNoExportEnv = TRUE; 555 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 556 break; 557 case 'd': 558 if (argvalue == NULL) goto noarg; 559 /* If '-d-opts' don't pass to children */ 560 if (argvalue[0] == '-') 561 argvalue++; 562 else { 563 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 564 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 565 } 566 parse_debug_options(argvalue); 567 break; 568 case 'e': 569 checkEnvFirst = TRUE; 570 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 571 break; 572 case 'f': 573 if (argvalue == NULL) goto noarg; 574 (void)Lst_AtEnd(makefiles, argvalue); 575 break; 576 case 'i': 577 ignoreErrors = TRUE; 578 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 579 break; 580 case 'j': 581 if (argvalue == NULL) goto noarg; 582 forceJobs = TRUE; 583 maxJobs = strtol(argvalue, &p, 0); 584 if (*p != '\0' || maxJobs < 1) { 585 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 586 progname); 587 exit(1); 588 } 589 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 590 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 591 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 592 maxJobTokens = maxJobs; 593 break; 594 case 'k': 595 keepgoing = TRUE; 596 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 597 break; 598 case 'm': 599 if (argvalue == NULL) goto noarg; 600 /* look for magic parent directory search string */ 601 if (strncmp(".../", argvalue, 4) == 0) { 602 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 603 found_path, sizeof(found_path))) 604 break; /* nothing doing */ 605 (void)Dir_AddDir(sysIncPath, found_path); 606 } else { 607 (void)Dir_AddDir(sysIncPath, argvalue); 608 } 609 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 610 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 611 break; 612 case 'n': 613 noExecute = TRUE; 614 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 615 break; 616 case 'q': 617 queryFlag = TRUE; 618 /* Kind of nonsensical, wot? */ 619 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 620 break; 621 case 'r': 622 noBuiltins = TRUE; 623 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 624 break; 625 case 's': 626 beSilent = TRUE; 627 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 628 break; 629 case 't': 630 touchFlag = TRUE; 631 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 632 break; 633 case 'w': 634 enterFlag = TRUE; 635 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 636 break; 637 case '-': 638 dashDash = TRUE; 639 break; 640 default: 641 case '?': 642 usage(); 643 } 644 argv += arginc; 645 argc -= arginc; 646 } 647 648 oldVars = TRUE; 649 650 /* 651 * See if the rest of the arguments are variable assignments and 652 * perform them if so. Else take them to be targets and stuff them 653 * on the end of the "create" list. 654 */ 655 for (; argc > 1; ++argv, --argc) 656 if (Parse_IsVar(argv[1])) { 657 Parse_DoVar(argv[1], VAR_CMD); 658 } else { 659 if (!*argv[1]) 660 Punt("illegal (null) argument."); 661 if (*argv[1] == '-' && !dashDash) 662 goto rearg; 663 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 664 } 665 666 return; 667 noarg: 668 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 669 progname, c); 670 usage(); 671 } 672 673 /*- 674 * Main_ParseArgLine -- 675 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 676 * is encountered and by main() when reading the .MAKEFLAGS envariable. 677 * Takes a line of arguments and breaks it into its 678 * component words and passes those words and the number of them to the 679 * MainParseArgs function. 680 * The line should have all its leading whitespace removed. 681 * 682 * Input: 683 * line Line to fracture 684 * 685 * Results: 686 * None 687 * 688 * Side Effects: 689 * Only those that come from the various arguments. 690 */ 691 void 692 Main_ParseArgLine(const char *line) 693 { 694 char **argv; /* Manufactured argument vector */ 695 int argc; /* Number of arguments in argv */ 696 char *args; /* Space used by the args */ 697 char *buf, *p1; 698 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 699 size_t len; 700 701 if (line == NULL) 702 return; 703 for (; *line == ' '; ++line) 704 continue; 705 if (!*line) 706 return; 707 708 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 709 (void)snprintf(buf, len, "%s %s", argv0, line); 710 free(p1); 711 712 argv = brk_string(buf, &argc, TRUE, &args); 713 if (argv == NULL) { 714 Error("Unterminated quoted string [%s]", buf); 715 free(buf); 716 return; 717 } 718 free(buf); 719 MainParseArgs(argc, argv); 720 721 free(args); 722 free(argv); 723 } 724 725 Boolean 726 Main_SetObjdir(const char *fmt, ...) 727 { 728 struct stat sb; 729 char *path; 730 char buf[MAXPATHLEN + 1]; 731 char buf2[MAXPATHLEN + 1]; 732 Boolean rc = FALSE; 733 va_list ap; 734 735 va_start(ap, fmt); 736 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 737 va_end(ap); 738 739 if (path[0] != '/') { 740 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 741 path = buf2; 742 } 743 744 /* look for the directory and try to chdir there */ 745 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 746 if (chdir(path)) { 747 (void)fprintf(stderr, "make warning: %s: %s.\n", 748 path, strerror(errno)); 749 } else { 750 strncpy(objdir, path, MAXPATHLEN); 751 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 752 setenv("PWD", objdir, 1); 753 Dir_InitDot(); 754 purge_cached_realpaths(); 755 rc = TRUE; 756 if (enterFlag && strcmp(objdir, curdir) != 0) 757 enterFlagObj = TRUE; 758 } 759 } 760 761 return rc; 762 } 763 764 static Boolean 765 Main_SetVarObjdir(const char *var, const char *suffix) 766 { 767 char *p, *path, *xpath; 768 769 if ((path = Var_Value(var, VAR_CMD, &p)) == NULL || 770 *path == '\0') 771 return FALSE; 772 773 /* expand variable substitutions */ 774 if (strchr(path, '$') != 0) 775 xpath = Var_Subst(NULL, path, VAR_GLOBAL, VARF_WANTRES); 776 else 777 xpath = path; 778 779 (void)Main_SetObjdir("%s%s", xpath, suffix); 780 781 if (xpath != path) 782 free(xpath); 783 free(p); 784 return TRUE; 785 } 786 787 /*- 788 * ReadAllMakefiles -- 789 * wrapper around ReadMakefile() to read all. 790 * 791 * Results: 792 * TRUE if ok, FALSE on error 793 */ 794 static int 795 ReadAllMakefiles(const void *p, const void *q) 796 { 797 return ReadMakefile(p, q) == 0; 798 } 799 800 int 801 str2Lst_Append(Lst lp, char *str, const char *sep) 802 { 803 char *cp; 804 int n; 805 806 if (!sep) 807 sep = " \t"; 808 809 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 810 (void)Lst_AtEnd(lp, cp); 811 n++; 812 } 813 return n; 814 } 815 816 #ifdef SIGINFO 817 /*ARGSUSED*/ 818 static void 819 siginfo(int signo MAKE_ATTR_UNUSED) 820 { 821 char dir[MAXPATHLEN]; 822 char str[2 * MAXPATHLEN]; 823 int len; 824 if (getcwd(dir, sizeof(dir)) == NULL) 825 return; 826 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 827 if (len > 0) 828 (void)write(STDERR_FILENO, str, (size_t)len); 829 } 830 #endif 831 832 /* 833 * Allow makefiles some control over the mode we run in. 834 */ 835 void 836 MakeMode(const char *mode) 837 { 838 char *mp = NULL; 839 840 if (!mode) 841 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 842 VAR_GLOBAL, VARF_WANTRES); 843 844 if (mode && *mode) { 845 if (strstr(mode, "compat")) { 846 compatMake = TRUE; 847 forceJobs = FALSE; 848 } 849 #if USE_META 850 if (strstr(mode, "meta")) 851 meta_mode_init(mode); 852 #endif 853 } 854 855 free(mp); 856 } 857 858 static void 859 doPrintVars(void) 860 { 861 LstNode ln; 862 Boolean expandVars; 863 864 if (printVars == EXPAND_VARS) 865 expandVars = TRUE; 866 else if (debugVflag) 867 expandVars = FALSE; 868 else 869 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 870 871 for (ln = Lst_First(variables); ln != NULL; 872 ln = Lst_Succ(ln)) { 873 char *var = (char *)Lst_Datum(ln); 874 char *value; 875 char *p1; 876 877 if (strchr(var, '$')) { 878 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 879 VARF_WANTRES); 880 } else if (expandVars) { 881 char tmp[128]; 882 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 883 884 if (len >= (int)sizeof(tmp)) 885 Fatal("%s: variable name too big: %s", 886 progname, var); 887 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 888 VARF_WANTRES); 889 } else { 890 value = Var_Value(var, VAR_GLOBAL, &p1); 891 } 892 printf("%s\n", value ? value : ""); 893 free(p1); 894 } 895 } 896 897 static Boolean 898 runTargets(void) 899 { 900 Lst targs; /* target nodes to create -- passed to Make_Init */ 901 Boolean outOfDate; /* FALSE if all targets up to date */ 902 903 /* 904 * Have now read the entire graph and need to make a list of 905 * targets to create. If none was given on the command line, 906 * we consult the parsing module to find the main target(s) 907 * to create. 908 */ 909 if (Lst_IsEmpty(create)) 910 targs = Parse_MainName(); 911 else 912 targs = Targ_FindList(create, TARG_CREATE); 913 914 if (!compatMake) { 915 /* 916 * Initialize job module before traversing the graph 917 * now that any .BEGIN and .END targets have been read. 918 * This is done only if the -q flag wasn't given 919 * (to prevent the .BEGIN from being executed should 920 * it exist). 921 */ 922 if (!queryFlag) { 923 Job_Init(); 924 jobsRunning = TRUE; 925 } 926 927 /* Traverse the graph, checking on all the targets */ 928 outOfDate = Make_Run(targs); 929 } else { 930 /* 931 * Compat_Init will take care of creating all the 932 * targets as well as initializing the module. 933 */ 934 Compat_Run(targs); 935 outOfDate = FALSE; 936 } 937 Lst_Destroy(targs, NULL); 938 return outOfDate; 939 } 940 941 /*- 942 * main -- 943 * The main function, for obvious reasons. Initializes variables 944 * and a few modules, then parses the arguments give it in the 945 * environment and on the command line. Reads the system makefile 946 * followed by either Makefile, makefile or the file given by the 947 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 948 * flags it has received by then uses either the Make or the Compat 949 * module to create the initial list of targets. 950 * 951 * Results: 952 * If -q was given, exits -1 if anything was out-of-date. Else it exits 953 * 0. 954 * 955 * Side Effects: 956 * The program exits when done. Targets are created. etc. etc. etc. 957 */ 958 int 959 main(int argc, char **argv) 960 { 961 Boolean outOfDate; /* FALSE if all targets up to date */ 962 struct stat sb, sa; 963 char *p1, *path; 964 char mdpath[MAXPATHLEN]; 965 const char *machine = getenv("MACHINE"); 966 const char *machine_arch = getenv("MACHINE_ARCH"); 967 char *syspath = getenv("MAKESYSPATH"); 968 Lst sysMkPath; /* Path of sys.mk */ 969 char *cp = NULL, *start; 970 /* avoid faults on read-only strings */ 971 static char defsyspath[] = _PATH_DEFSYSPATH; 972 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 973 struct timeval rightnow; /* to initialize random seed */ 974 struct utsname utsname; 975 976 /* default to writing debug to stderr */ 977 debug_file = stderr; 978 979 #ifdef SIGINFO 980 (void)bmake_signal(SIGINFO, siginfo); 981 #endif 982 /* 983 * Set the seed to produce a different random sequence 984 * on each program execution. 985 */ 986 gettimeofday(&rightnow, NULL); 987 srandom(rightnow.tv_sec + rightnow.tv_usec); 988 989 if ((progname = strrchr(argv[0], '/')) != NULL) 990 progname++; 991 else 992 progname = argv[0]; 993 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 994 /* 995 * get rid of resource limit on file descriptors 996 */ 997 { 998 struct rlimit rl; 999 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1000 rl.rlim_cur != rl.rlim_max) { 1001 rl.rlim_cur = rl.rlim_max; 1002 (void)setrlimit(RLIMIT_NOFILE, &rl); 1003 } 1004 } 1005 #endif 1006 1007 if (uname(&utsname) == -1) { 1008 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1009 strerror(errno)); 1010 exit(2); 1011 } 1012 1013 /* 1014 * Get the name of this type of MACHINE from utsname 1015 * so we can share an executable for similar machines. 1016 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1017 * 1018 * Note that both MACHINE and MACHINE_ARCH are decided at 1019 * run-time. 1020 */ 1021 if (!machine) { 1022 #ifdef MAKE_NATIVE 1023 machine = utsname.machine; 1024 #else 1025 #ifdef MAKE_MACHINE 1026 machine = MAKE_MACHINE; 1027 #else 1028 machine = "unknown"; 1029 #endif 1030 #endif 1031 } 1032 1033 if (!machine_arch) { 1034 #ifdef MAKE_NATIVE 1035 static char machine_arch_buf[sizeof(utsname.machine)]; 1036 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1037 size_t len = sizeof(machine_arch_buf); 1038 1039 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1040 &len, NULL, 0) < 0) { 1041 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1042 strerror(errno)); 1043 exit(2); 1044 } 1045 1046 machine_arch = machine_arch_buf; 1047 #else 1048 #ifndef MACHINE_ARCH 1049 #ifdef MAKE_MACHINE_ARCH 1050 machine_arch = MAKE_MACHINE_ARCH; 1051 #else 1052 machine_arch = "unknown"; 1053 #endif 1054 #else 1055 machine_arch = MACHINE_ARCH; 1056 #endif 1057 #endif 1058 } 1059 1060 myPid = getpid(); /* remember this for vFork() */ 1061 1062 /* 1063 * Just in case MAKEOBJDIR wants us to do something tricky. 1064 */ 1065 Var_Init(); /* Initialize the lists of variables for 1066 * parsing arguments */ 1067 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1068 Var_Set("MACHINE", machine, VAR_GLOBAL); 1069 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1070 #ifdef MAKE_VERSION 1071 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1072 #endif 1073 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1074 /* 1075 * This is the traditional preference for makefiles. 1076 */ 1077 #ifndef MAKEFILE_PREFERENCE_LIST 1078 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1079 #endif 1080 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1081 VAR_GLOBAL); 1082 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1083 1084 create = Lst_Init(FALSE); 1085 makefiles = Lst_Init(FALSE); 1086 printVars = 0; 1087 debugVflag = FALSE; 1088 variables = Lst_Init(FALSE); 1089 beSilent = FALSE; /* Print commands as executed */ 1090 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1091 noExecute = FALSE; /* Execute all commands */ 1092 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1093 keepgoing = FALSE; /* Stop on error */ 1094 allPrecious = FALSE; /* Remove targets when interrupted */ 1095 deleteOnError = FALSE; /* Historical default behavior */ 1096 queryFlag = FALSE; /* This is not just a check-run */ 1097 noBuiltins = FALSE; /* Read the built-in rules */ 1098 touchFlag = FALSE; /* Actually update targets */ 1099 debug = 0; /* No debug verbosity, please. */ 1100 jobsRunning = FALSE; 1101 1102 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1103 maxJobTokens = maxJobs; 1104 compatMake = FALSE; /* No compat mode */ 1105 ignorePWD = FALSE; 1106 1107 /* 1108 * Initialize the parsing, directory and variable modules to prepare 1109 * for the reading of inclusion paths and variable settings on the 1110 * command line 1111 */ 1112 1113 /* 1114 * Initialize various variables. 1115 * MAKE also gets this name, for compatibility 1116 * .MAKEFLAGS gets set to the empty string just in case. 1117 * MFLAGS also gets initialized empty, for compatibility. 1118 */ 1119 Parse_Init(); 1120 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1121 /* 1122 * Leave alone if it is an absolute path, or if it does 1123 * not contain a '/' in which case we need to find it in 1124 * the path, like execvp(3) and the shells do. 1125 */ 1126 p1 = argv[0]; 1127 } else { 1128 /* 1129 * A relative path, canonicalize it. 1130 */ 1131 p1 = cached_realpath(argv[0], mdpath); 1132 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1133 p1 = argv[0]; /* realpath failed */ 1134 } 1135 } 1136 Var_Set("MAKE", p1, VAR_GLOBAL); 1137 Var_Set(".MAKE", p1, VAR_GLOBAL); 1138 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1139 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1140 Var_Set("MFLAGS", "", VAR_GLOBAL); 1141 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1142 /* some makefiles need to know this */ 1143 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1144 1145 /* 1146 * Set some other useful macros 1147 */ 1148 { 1149 char tmp[64], *ep; 1150 1151 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1152 if (makelevel < 0) 1153 makelevel = 0; 1154 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1155 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1156 snprintf(tmp, sizeof(tmp), "%u", myPid); 1157 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1158 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1159 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1160 } 1161 if (makelevel > 0) { 1162 char pn[1024]; 1163 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1164 progname = bmake_strdup(pn); 1165 } 1166 1167 #ifdef USE_META 1168 meta_init(); 1169 #endif 1170 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1171 1172 /* 1173 * First snag any flags out of the MAKE environment variable. 1174 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1175 * in a different format). 1176 */ 1177 #ifdef POSIX 1178 p1 = explode(getenv("MAKEFLAGS")); 1179 Main_ParseArgLine(p1); 1180 free(p1); 1181 #else 1182 Main_ParseArgLine(getenv("MAKE")); 1183 #endif 1184 1185 /* 1186 * Find where we are (now). 1187 * We take care of PWD for the automounter below... 1188 */ 1189 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1190 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1191 progname, strerror(errno)); 1192 exit(2); 1193 } 1194 1195 MainParseArgs(argc, argv); 1196 1197 if (enterFlag) 1198 printf("%s: Entering directory `%s'\n", progname, curdir); 1199 1200 /* 1201 * Verify that cwd is sane. 1202 */ 1203 if (stat(curdir, &sa) == -1) { 1204 (void)fprintf(stderr, "%s: %s: %s.\n", 1205 progname, curdir, strerror(errno)); 1206 exit(2); 1207 } 1208 1209 /* 1210 * All this code is so that we know where we are when we start up 1211 * on a different machine with pmake. 1212 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1213 * since the value of curdir can vary depending on how we got 1214 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1215 * or via subdir.mk in which case its likely a shell which does 1216 * not provide it. 1217 * So, to stop it breaking this case only, we ignore PWD if 1218 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1219 */ 1220 #ifndef NO_PWD_OVERRIDE 1221 if (!ignorePWD) { 1222 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1223 1224 if ((pwd = getenv("PWD")) != NULL && 1225 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1226 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1227 VAR_CMD, &ptmp2); 1228 1229 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1230 if (stat(pwd, &sb) == 0 && 1231 sa.st_ino == sb.st_ino && 1232 sa.st_dev == sb.st_dev) 1233 (void)strncpy(curdir, pwd, MAXPATHLEN); 1234 } 1235 } 1236 free(ptmp1); 1237 free(ptmp2); 1238 } 1239 #endif 1240 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1241 1242 /* 1243 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1244 * MAKEOBJDIR is set in the environment, try only that value 1245 * and fall back to .CURDIR if it does not exist. 1246 * 1247 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1248 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1249 * of these paths exist, just use .CURDIR. 1250 */ 1251 Dir_Init(curdir); 1252 (void)Main_SetObjdir("%s", curdir); 1253 1254 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1255 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1256 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1257 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1258 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1259 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1260 1261 /* 1262 * Initialize archive, target and suffix modules in preparation for 1263 * parsing the makefile(s) 1264 */ 1265 Arch_Init(); 1266 Targ_Init(); 1267 Suff_Init(); 1268 Trace_Init(tracefile); 1269 1270 DEFAULT = NULL; 1271 (void)time(&now); 1272 1273 Trace_Log(MAKESTART, NULL); 1274 1275 /* 1276 * Set up the .TARGETS variable to contain the list of targets to be 1277 * created. If none specified, make the variable empty -- the parser 1278 * will fill the thing in with the default or .MAIN target. 1279 */ 1280 if (!Lst_IsEmpty(create)) { 1281 LstNode ln; 1282 1283 for (ln = Lst_First(create); ln != NULL; 1284 ln = Lst_Succ(ln)) { 1285 char *name = (char *)Lst_Datum(ln); 1286 1287 Var_Append(".TARGETS", name, VAR_GLOBAL); 1288 } 1289 } else 1290 Var_Set(".TARGETS", "", VAR_GLOBAL); 1291 1292 1293 /* 1294 * If no user-supplied system path was given (through the -m option) 1295 * add the directories from the DEFSYSPATH (more than one may be given 1296 * as dir1:...:dirn) to the system include path. 1297 */ 1298 if (syspath == NULL || *syspath == '\0') 1299 syspath = defsyspath; 1300 else 1301 syspath = bmake_strdup(syspath); 1302 1303 for (start = syspath; *start != '\0'; start = cp) { 1304 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1305 continue; 1306 if (*cp == ':') { 1307 *cp++ = '\0'; 1308 } 1309 /* look for magic parent directory search string */ 1310 if (strncmp(".../", start, 4) != 0) { 1311 (void)Dir_AddDir(defIncPath, start); 1312 } else { 1313 if (Dir_FindHereOrAbove(curdir, start+4, 1314 found_path, sizeof(found_path))) { 1315 (void)Dir_AddDir(defIncPath, found_path); 1316 } 1317 } 1318 } 1319 if (syspath != defsyspath) 1320 free(syspath); 1321 1322 /* 1323 * Read in the built-in rules first, followed by the specified 1324 * makefile, if it was (makefile != NULL), or the default 1325 * makefile and Makefile, in that order, if it wasn't. 1326 */ 1327 if (!noBuiltins) { 1328 LstNode ln; 1329 1330 sysMkPath = Lst_Init(FALSE); 1331 Dir_Expand(_PATH_DEFSYSMK, 1332 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1333 sysMkPath); 1334 if (Lst_IsEmpty(sysMkPath)) 1335 Fatal("%s: no system rules (%s).", progname, 1336 _PATH_DEFSYSMK); 1337 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1338 if (ln == NULL) 1339 Fatal("%s: cannot open %s.", progname, 1340 (char *)Lst_Datum(ln)); 1341 } 1342 1343 if (!Lst_IsEmpty(makefiles)) { 1344 LstNode ln; 1345 1346 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1347 if (ln != NULL) 1348 Fatal("%s: cannot open %s.", progname, 1349 (char *)Lst_Datum(ln)); 1350 } else { 1351 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1352 VAR_CMD, VARF_WANTRES); 1353 if (p1) { 1354 (void)str2Lst_Append(makefiles, p1, NULL); 1355 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1356 free(p1); 1357 } 1358 } 1359 1360 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1361 if (!noBuiltins || !printVars) { 1362 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1363 VAR_CMD, VARF_WANTRES); 1364 doing_depend = TRUE; 1365 (void)ReadMakefile(makeDependfile, NULL); 1366 doing_depend = FALSE; 1367 } 1368 1369 if (enterFlagObj) 1370 printf("%s: Entering directory `%s'\n", progname, objdir); 1371 1372 MakeMode(NULL); 1373 1374 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1375 free(p1); 1376 1377 if (!forceJobs && !compatMake && 1378 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1379 char *value; 1380 int n; 1381 1382 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1383 n = strtol(value, NULL, 0); 1384 if (n < 1) { 1385 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1386 progname); 1387 exit(1); 1388 } 1389 if (n != maxJobs) { 1390 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1391 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1392 } 1393 maxJobs = n; 1394 maxJobTokens = maxJobs; 1395 forceJobs = TRUE; 1396 free(value); 1397 } 1398 1399 /* 1400 * Be compatible if user did not specify -j and did not explicitly 1401 * turned compatibility on 1402 */ 1403 if (!compatMake && !forceJobs) { 1404 compatMake = TRUE; 1405 } 1406 1407 if (!compatMake) 1408 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1409 if (DEBUG(JOB)) 1410 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1411 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1412 1413 if (!printVars) 1414 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1415 1416 1417 /* 1418 * For compatibility, look at the directories in the VPATH variable 1419 * and add them to the search path, if the variable is defined. The 1420 * variable's value is in the same format as the PATH envariable, i.e. 1421 * <directory>:<directory>:<directory>... 1422 */ 1423 if (Var_Exists("VPATH", VAR_CMD)) { 1424 char *vpath, savec; 1425 /* 1426 * GCC stores string constants in read-only memory, but 1427 * Var_Subst will want to write this thing, so store it 1428 * in an array 1429 */ 1430 static char VPATH[] = "${VPATH}"; 1431 1432 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1433 path = vpath; 1434 do { 1435 /* skip to end of directory */ 1436 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1437 continue; 1438 /* Save terminator character so know when to stop */ 1439 savec = *cp; 1440 *cp = '\0'; 1441 /* Add directory to search path */ 1442 (void)Dir_AddDir(dirSearchPath, path); 1443 *cp = savec; 1444 path = cp + 1; 1445 } while (savec == ':'); 1446 free(vpath); 1447 } 1448 1449 /* 1450 * Now that all search paths have been read for suffixes et al, it's 1451 * time to add the default search path to their lists... 1452 */ 1453 Suff_DoPaths(); 1454 1455 /* 1456 * Propagate attributes through :: dependency lists. 1457 */ 1458 Targ_Propagate(); 1459 1460 /* print the initial graph, if the user requested it */ 1461 if (DEBUG(GRAPH1)) 1462 Targ_PrintGraph(1); 1463 1464 /* print the values of any variables requested by the user */ 1465 if (printVars) { 1466 doPrintVars(); 1467 outOfDate = FALSE; 1468 } else { 1469 outOfDate = runTargets(); 1470 } 1471 1472 #ifdef CLEANUP 1473 Lst_Destroy(variables, NULL); 1474 Lst_Destroy(makefiles, NULL); 1475 Lst_Destroy(create, (FreeProc *)free); 1476 #endif 1477 1478 /* print the graph now it's been processed if the user requested it */ 1479 if (DEBUG(GRAPH2)) 1480 Targ_PrintGraph(2); 1481 1482 Trace_Log(MAKEEND, 0); 1483 1484 if (enterFlagObj) 1485 printf("%s: Leaving directory `%s'\n", progname, objdir); 1486 if (enterFlag) 1487 printf("%s: Leaving directory `%s'\n", progname, curdir); 1488 1489 #ifdef USE_META 1490 meta_finish(); 1491 #endif 1492 Suff_End(); 1493 Targ_End(); 1494 Arch_End(); 1495 Var_End(); 1496 Parse_End(); 1497 Dir_End(); 1498 Job_End(); 1499 Trace_End(); 1500 1501 return outOfDate ? 1 : 0; 1502 } 1503 1504 /*- 1505 * ReadMakefile -- 1506 * Open and parse the given makefile. 1507 * 1508 * Results: 1509 * 0 if ok. -1 if couldn't open file. 1510 * 1511 * Side Effects: 1512 * lots 1513 */ 1514 static int 1515 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1516 { 1517 const char *fname = p; /* makefile to read */ 1518 int fd; 1519 size_t len = MAXPATHLEN; 1520 char *name, *path = bmake_malloc(len); 1521 1522 if (!strcmp(fname, "-")) { 1523 Parse_File(NULL /*stdin*/, -1); 1524 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1525 } else { 1526 /* if we've chdir'd, rebuild the path name */ 1527 if (strcmp(curdir, objdir) && *fname != '/') { 1528 size_t plen = strlen(curdir) + strlen(fname) + 2; 1529 if (len < plen) 1530 path = bmake_realloc(path, len = 2 * plen); 1531 1532 (void)snprintf(path, len, "%s/%s", curdir, fname); 1533 fd = open(path, O_RDONLY); 1534 if (fd != -1) { 1535 fname = path; 1536 goto found; 1537 } 1538 1539 /* If curdir failed, try objdir (ala .depend) */ 1540 plen = strlen(objdir) + strlen(fname) + 2; 1541 if (len < plen) 1542 path = bmake_realloc(path, len = 2 * plen); 1543 (void)snprintf(path, len, "%s/%s", objdir, fname); 1544 fd = open(path, O_RDONLY); 1545 if (fd != -1) { 1546 fname = path; 1547 goto found; 1548 } 1549 } else { 1550 fd = open(fname, O_RDONLY); 1551 if (fd != -1) 1552 goto found; 1553 } 1554 /* look in -I and system include directories. */ 1555 name = Dir_FindFile(fname, parseIncPath); 1556 if (!name) 1557 name = Dir_FindFile(fname, 1558 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1559 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1560 free(name); 1561 free(path); 1562 return -1; 1563 } 1564 fname = name; 1565 /* 1566 * set the MAKEFILE variable desired by System V fans -- the 1567 * placement of the setting here means it gets set to the last 1568 * makefile specified, as it is set by SysV make. 1569 */ 1570 found: 1571 if (!doing_depend) 1572 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1573 Parse_File(fname, fd); 1574 } 1575 free(path); 1576 return 0; 1577 } 1578 1579 1580 1581 /*- 1582 * Cmd_Exec -- 1583 * Execute the command in cmd, and return the output of that command 1584 * in a string. 1585 * 1586 * Results: 1587 * A string containing the output of the command, or the empty string 1588 * If errnum is not NULL, it contains the reason for the command failure 1589 * 1590 * Side Effects: 1591 * The string must be freed by the caller. 1592 */ 1593 char * 1594 Cmd_Exec(const char *cmd, const char **errnum) 1595 { 1596 const char *args[4]; /* Args for invoking the shell */ 1597 int fds[2]; /* Pipe streams */ 1598 int cpid; /* Child PID */ 1599 int pid; /* PID from wait() */ 1600 char *res; /* result */ 1601 int status; /* command exit status */ 1602 Buffer buf; /* buffer to store the result */ 1603 char *cp; 1604 int cc; /* bytes read, or -1 */ 1605 int savederr; /* saved errno */ 1606 1607 1608 *errnum = NULL; 1609 1610 if (!shellName) 1611 Shell_Init(); 1612 /* 1613 * Set up arguments for shell 1614 */ 1615 args[0] = shellName; 1616 args[1] = "-c"; 1617 args[2] = cmd; 1618 args[3] = NULL; 1619 1620 /* 1621 * Open a pipe for fetching its output 1622 */ 1623 if (pipe(fds) == -1) { 1624 *errnum = "Couldn't create pipe for \"%s\""; 1625 goto bad; 1626 } 1627 1628 /* 1629 * Fork 1630 */ 1631 switch (cpid = vFork()) { 1632 case 0: 1633 /* 1634 * Close input side of pipe 1635 */ 1636 (void)close(fds[0]); 1637 1638 /* 1639 * Duplicate the output stream to the shell's output, then 1640 * shut the extra thing down. Note we don't fetch the error 1641 * stream...why not? Why? 1642 */ 1643 (void)dup2(fds[1], 1); 1644 (void)close(fds[1]); 1645 1646 Var_ExportVars(); 1647 1648 (void)execv(shellPath, UNCONST(args)); 1649 _exit(1); 1650 /*NOTREACHED*/ 1651 1652 case -1: 1653 *errnum = "Couldn't exec \"%s\""; 1654 goto bad; 1655 1656 default: 1657 /* 1658 * No need for the writing half 1659 */ 1660 (void)close(fds[1]); 1661 1662 savederr = 0; 1663 Buf_Init(&buf, 0); 1664 1665 do { 1666 char result[BUFSIZ]; 1667 cc = read(fds[0], result, sizeof(result)); 1668 if (cc > 0) 1669 Buf_AddBytes(&buf, cc, result); 1670 } 1671 while (cc > 0 || (cc == -1 && errno == EINTR)); 1672 if (cc == -1) 1673 savederr = errno; 1674 1675 /* 1676 * Close the input side of the pipe. 1677 */ 1678 (void)close(fds[0]); 1679 1680 /* 1681 * Wait for the process to exit. 1682 */ 1683 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1684 JobReapChild(pid, status, FALSE); 1685 continue; 1686 } 1687 cc = Buf_Size(&buf); 1688 res = Buf_Destroy(&buf, FALSE); 1689 1690 if (savederr != 0) 1691 *errnum = "Couldn't read shell's output for \"%s\""; 1692 1693 if (WIFSIGNALED(status)) 1694 *errnum = "\"%s\" exited on a signal"; 1695 else if (WEXITSTATUS(status) != 0) 1696 *errnum = "\"%s\" returned non-zero status"; 1697 1698 /* 1699 * Null-terminate the result, convert newlines to spaces and 1700 * install it in the variable. 1701 */ 1702 res[cc] = '\0'; 1703 cp = &res[cc]; 1704 1705 if (cc > 0 && *--cp == '\n') { 1706 /* 1707 * A final newline is just stripped 1708 */ 1709 *cp-- = '\0'; 1710 } 1711 while (cp >= res) { 1712 if (*cp == '\n') { 1713 *cp = ' '; 1714 } 1715 cp--; 1716 } 1717 break; 1718 } 1719 return res; 1720 bad: 1721 res = bmake_malloc(1); 1722 *res = '\0'; 1723 return res; 1724 } 1725 1726 /*- 1727 * Error -- 1728 * Print an error message given its format. 1729 * 1730 * Results: 1731 * None. 1732 * 1733 * Side Effects: 1734 * The message is printed. 1735 */ 1736 /* VARARGS */ 1737 void 1738 Error(const char *fmt, ...) 1739 { 1740 va_list ap; 1741 FILE *err_file; 1742 1743 err_file = debug_file; 1744 if (err_file == stdout) 1745 err_file = stderr; 1746 (void)fflush(stdout); 1747 for (;;) { 1748 va_start(ap, fmt); 1749 fprintf(err_file, "%s: ", progname); 1750 (void)vfprintf(err_file, fmt, ap); 1751 va_end(ap); 1752 (void)fprintf(err_file, "\n"); 1753 (void)fflush(err_file); 1754 if (err_file == stderr) 1755 break; 1756 err_file = stderr; 1757 } 1758 } 1759 1760 /*- 1761 * Fatal -- 1762 * Produce a Fatal error message. If jobs are running, waits for them 1763 * to finish. 1764 * 1765 * Results: 1766 * None 1767 * 1768 * Side Effects: 1769 * The program exits 1770 */ 1771 /* VARARGS */ 1772 void 1773 Fatal(const char *fmt, ...) 1774 { 1775 va_list ap; 1776 1777 va_start(ap, fmt); 1778 if (jobsRunning) 1779 Job_Wait(); 1780 1781 (void)fflush(stdout); 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 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1790 Targ_PrintGraph(2); 1791 Trace_Log(MAKEERROR, 0); 1792 exit(2); /* Not 1 so -q can distinguish error */ 1793 } 1794 1795 /* 1796 * Punt -- 1797 * Major exception once jobs are being created. Kills all jobs, prints 1798 * a message and exits. 1799 * 1800 * Results: 1801 * None 1802 * 1803 * Side Effects: 1804 * All children are killed indiscriminately and the program Lib_Exits 1805 */ 1806 /* VARARGS */ 1807 void 1808 Punt(const char *fmt, ...) 1809 { 1810 va_list ap; 1811 1812 va_start(ap, fmt); 1813 (void)fflush(stdout); 1814 (void)fprintf(stderr, "%s: ", progname); 1815 (void)vfprintf(stderr, fmt, ap); 1816 va_end(ap); 1817 (void)fprintf(stderr, "\n"); 1818 (void)fflush(stderr); 1819 1820 PrintOnError(NULL, NULL); 1821 1822 DieHorribly(); 1823 } 1824 1825 /*- 1826 * DieHorribly -- 1827 * Exit without giving a message. 1828 * 1829 * Results: 1830 * None 1831 * 1832 * Side Effects: 1833 * A big one... 1834 */ 1835 void 1836 DieHorribly(void) 1837 { 1838 if (jobsRunning) 1839 Job_AbortAll(); 1840 if (DEBUG(GRAPH2)) 1841 Targ_PrintGraph(2); 1842 Trace_Log(MAKEERROR, 0); 1843 exit(2); /* Not 1, so -q can distinguish error */ 1844 } 1845 1846 /* 1847 * Finish -- 1848 * Called when aborting due to errors in child shell to signal 1849 * abnormal exit. 1850 * 1851 * Results: 1852 * None 1853 * 1854 * Side Effects: 1855 * The program exits 1856 */ 1857 void 1858 Finish(int errors) 1859 /* number of errors encountered in Make_Make */ 1860 { 1861 if (dieQuietly(NULL, -1)) 1862 exit(2); 1863 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1864 } 1865 1866 /* 1867 * eunlink -- 1868 * Remove a file carefully, avoiding directories. 1869 */ 1870 int 1871 eunlink(const char *file) 1872 { 1873 struct stat st; 1874 1875 if (lstat(file, &st) == -1) 1876 return -1; 1877 1878 if (S_ISDIR(st.st_mode)) { 1879 errno = EISDIR; 1880 return -1; 1881 } 1882 return unlink(file); 1883 } 1884 1885 /* 1886 * execError -- 1887 * Print why exec failed, avoiding stdio. 1888 */ 1889 void 1890 execError(const char *af, const char *av) 1891 { 1892 #ifdef USE_IOVEC 1893 int i = 0; 1894 struct iovec iov[8]; 1895 #define IOADD(s) \ 1896 (void)(iov[i].iov_base = UNCONST(s), \ 1897 iov[i].iov_len = strlen(iov[i].iov_base), \ 1898 i++) 1899 #else 1900 #define IOADD(void)write(2, s, strlen(s)) 1901 #endif 1902 1903 IOADD(progname); 1904 IOADD(": "); 1905 IOADD(af); 1906 IOADD("("); 1907 IOADD(av); 1908 IOADD(") failed ("); 1909 IOADD(strerror(errno)); 1910 IOADD(")\n"); 1911 1912 #ifdef USE_IOVEC 1913 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1914 continue; 1915 #endif 1916 } 1917 1918 /* 1919 * usage -- 1920 * exit with usage message 1921 */ 1922 static void 1923 usage(void) 1924 { 1925 char *p; 1926 if ((p = strchr(progname, '[')) != NULL) 1927 *p = '\0'; 1928 1929 (void)fprintf(stderr, 1930 "usage: %s [-BeikNnqrstWwX] \n\ 1931 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1932 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1933 [-V variable] [-v variable] [variable=value] [target ...]\n", 1934 progname); 1935 exit(2); 1936 } 1937 1938 /* 1939 * realpath(3) can get expensive, cache results... 1940 */ 1941 static GNode *cached_realpaths = NULL; 1942 1943 static GNode * 1944 get_cached_realpaths(void) 1945 { 1946 1947 if (!cached_realpaths) { 1948 cached_realpaths = Targ_NewGN("Realpath"); 1949 #ifndef DEBUG_REALPATH_CACHE 1950 cached_realpaths->flags = INTERNAL; 1951 #endif 1952 } 1953 1954 return cached_realpaths; 1955 } 1956 1957 /* purge any relative paths */ 1958 static void 1959 purge_cached_realpaths(void) 1960 { 1961 GNode *cache = get_cached_realpaths(); 1962 Hash_Entry *he, *nhe; 1963 Hash_Search hs; 1964 1965 he = Hash_EnumFirst(&cache->context, &hs); 1966 while (he) { 1967 nhe = Hash_EnumNext(&hs); 1968 if (he->name[0] != '/') { 1969 if (DEBUG(DIR)) 1970 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1971 Hash_DeleteEntry(&cache->context, he); 1972 } 1973 he = nhe; 1974 } 1975 } 1976 1977 char * 1978 cached_realpath(const char *pathname, char *resolved) 1979 { 1980 GNode *cache; 1981 char *rp, *cp; 1982 1983 if (!pathname || !pathname[0]) 1984 return NULL; 1985 1986 cache = get_cached_realpaths(); 1987 1988 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1989 /* a hit */ 1990 strncpy(resolved, rp, MAXPATHLEN); 1991 resolved[MAXPATHLEN - 1] = '\0'; 1992 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1993 Var_Set(pathname, rp, cache); 1994 } /* else should we negative-cache? */ 1995 1996 free(cp); 1997 return rp ? resolved : NULL; 1998 } 1999 2000 int 2001 PrintAddr(void *a, void *b) 2002 { 2003 printf("%lx ", (unsigned long) a); 2004 return b ? 0 : 0; 2005 } 2006 2007 2008 static int 2009 addErrorCMD(void *cmdp, void *gnp) 2010 { 2011 if (cmdp == NULL) 2012 return 1; /* stop */ 2013 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2014 return 0; 2015 } 2016 2017 /* 2018 * Return true if we should die without noise. 2019 * For example our failing child was a sub-make 2020 * or failure happend elsewhere. 2021 */ 2022 int 2023 dieQuietly(GNode *gn, int bf) 2024 { 2025 static int quietly = -1; 2026 2027 if (quietly < 0) { 2028 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2029 quietly = 0; 2030 else if (bf >= 0) 2031 quietly = bf; 2032 else 2033 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2034 } 2035 return quietly; 2036 } 2037 2038 void 2039 PrintOnError(GNode *gn, const char *s) 2040 { 2041 static GNode *en = NULL; 2042 char tmp[64]; 2043 char *cp; 2044 2045 /* we generally want to keep quiet if a sub-make died */ 2046 if (dieQuietly(gn, -1)) 2047 return; 2048 2049 if (s) 2050 printf("%s", s); 2051 2052 printf("\n%s: stopped in %s\n", progname, curdir); 2053 2054 if (en) 2055 return; /* we've been here! */ 2056 if (gn) { 2057 /* 2058 * We can print this even if there is no .ERROR target. 2059 */ 2060 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2061 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2062 Lst_ForEach(gn->commands, addErrorCMD, gn); 2063 } 2064 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2065 sizeof(tmp) - 1); 2066 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2067 if (cp) { 2068 if (*cp) 2069 printf("%s", cp); 2070 free(cp); 2071 } 2072 fflush(stdout); 2073 2074 /* 2075 * Finally, see if there is a .ERROR target, and run it if so. 2076 */ 2077 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2078 if (en) { 2079 en->type |= OP_SPECIAL; 2080 Compat_Make(en, en); 2081 } 2082 } 2083 2084 void 2085 Main_ExportMAKEFLAGS(Boolean first) 2086 { 2087 static int once = 1; 2088 char tmp[64]; 2089 char *s; 2090 2091 if (once != first) 2092 return; 2093 once = 0; 2094 2095 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2096 sizeof(tmp)); 2097 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 2098 if (s && *s) { 2099 #ifdef POSIX 2100 setenv("MAKEFLAGS", s, 1); 2101 #else 2102 setenv("MAKE", s, 1); 2103 #endif 2104 } 2105 } 2106 2107 char * 2108 getTmpdir(void) 2109 { 2110 static char *tmpdir = NULL; 2111 2112 if (!tmpdir) { 2113 struct stat st; 2114 2115 /* 2116 * Honor $TMPDIR but only if it is valid. 2117 * Ensure it ends with /. 2118 */ 2119 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2120 VARF_WANTRES); 2121 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2122 free(tmpdir); 2123 tmpdir = bmake_strdup(_PATH_TMP); 2124 } 2125 } 2126 return tmpdir; 2127 } 2128 2129 /* 2130 * Create and open a temp file using "pattern". 2131 * If "fnamep" is provided set it to a copy of the filename created. 2132 * Otherwise unlink the file once open. 2133 */ 2134 int 2135 mkTempFile(const char *pattern, char **fnamep) 2136 { 2137 static char *tmpdir = NULL; 2138 char tfile[MAXPATHLEN]; 2139 int fd; 2140 2141 if (!pattern) 2142 pattern = TMPPAT; 2143 if (!tmpdir) 2144 tmpdir = getTmpdir(); 2145 if (pattern[0] == '/') { 2146 snprintf(tfile, sizeof(tfile), "%s", pattern); 2147 } else { 2148 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2149 } 2150 if ((fd = mkstemp(tfile)) < 0) 2151 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2152 if (fnamep) { 2153 *fnamep = bmake_strdup(tfile); 2154 } else { 2155 unlink(tfile); /* we just want the descriptor */ 2156 } 2157 return fd; 2158 } 2159 2160 /* 2161 * Convert a string representation of a boolean. 2162 * Anything that looks like "No", "False", "Off", "0" etc, 2163 * is FALSE, otherwise TRUE. 2164 */ 2165 Boolean 2166 s2Boolean(const char *s, Boolean bf) 2167 { 2168 if (s) { 2169 switch(*s) { 2170 case '\0': /* not set - the default wins */ 2171 break; 2172 case '0': 2173 case 'F': 2174 case 'f': 2175 case 'N': 2176 case 'n': 2177 bf = FALSE; 2178 break; 2179 case 'O': 2180 case 'o': 2181 switch (s[1]) { 2182 case 'F': 2183 case 'f': 2184 bf = FALSE; 2185 break; 2186 default: 2187 bf = TRUE; 2188 break; 2189 } 2190 break; 2191 default: 2192 bf = TRUE; 2193 break; 2194 } 2195 } 2196 return bf; 2197 } 2198 2199 /* 2200 * Return a Boolean based on setting of a knob. 2201 * 2202 * If the knob is not set, the supplied default is the return value. 2203 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2204 * is FALSE, otherwise TRUE. 2205 */ 2206 Boolean 2207 getBoolean(const char *name, Boolean bf) 2208 { 2209 char tmp[64]; 2210 char *cp; 2211 2212 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2213 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2214 2215 if (cp) { 2216 bf = s2Boolean(cp, bf); 2217 free(cp); 2218 } 2219 } 2220 return bf; 2221 } 2222
Indexes created Mon Sep 22 21:09:42 GMT 2025