1 /* $NetBSD: main.c,v 1.264 2017/04/20 03:57:27 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 1.264 2017/04/20 03:57:27 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 1.264 2017/04/20 03:57:27 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 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include "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 #ifndef __arraycount 151 # define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) 152 #endif 153 154 Lst create; /* Targets to be made */ 155 time_t now; /* Time at start of make */ 156 GNode *DEFAULT; /* .DEFAULT node */ 157 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 158 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 159 160 static Boolean noBuiltins; /* -r flag */ 161 static Lst makefiles; /* ordered list of makefiles to read */ 162 static Boolean printVars; /* print value of one or more vars */ 163 static Lst variables; /* list of variables to print */ 164 int maxJobs; /* -j argument */ 165 static int maxJobTokens; /* -j argument */ 166 Boolean compatMake; /* -B argument */ 167 int debug; /* -d argument */ 168 Boolean debugVflag; /* -dV */ 169 Boolean noExecute; /* -n flag */ 170 Boolean noRecursiveExecute; /* -N flag */ 171 Boolean keepgoing; /* -k flag */ 172 Boolean queryFlag; /* -q flag */ 173 Boolean touchFlag; /* -t flag */ 174 Boolean enterFlag; /* -w flag */ 175 Boolean enterFlagObj; /* -w and objdir != srcdir */ 176 Boolean ignoreErrors; /* -i flag */ 177 Boolean beSilent; /* -s flag */ 178 Boolean oldVars; /* variable substitution style */ 179 Boolean checkEnvFirst; /* -e flag */ 180 Boolean parseWarnFatal; /* -W flag */ 181 Boolean jobServer; /* -J flag */ 182 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 183 Boolean varNoExportEnv; /* -X flag */ 184 Boolean doing_depend; /* Set while reading .depend */ 185 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 186 static const char * tracefile; 187 static void MainParseArgs(int, char **); 188 static int ReadMakefile(const void *, const void *); 189 static void usage(void) MAKE_ATTR_DEAD; 190 static void purge_cached_realpaths(void); 191 192 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 193 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 194 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 195 char *progname; /* the program name */ 196 char *makeDependfile; 197 pid_t myPid; 198 int makelevel; 199 200 Boolean forceJobs = FALSE; 201 202 /* 203 * On some systems MACHINE is defined as something other than 204 * what we want. 205 */ 206 #ifdef FORCE_MACHINE 207 # undef MACHINE 208 # define MACHINE FORCE_MACHINE 209 #endif 210 211 extern Lst parseIncPath; 212 213 /* 214 * For compatibility with the POSIX version of MAKEFLAGS that includes 215 * all the options with out -, convert flags to -f -l -a -g -s. 216 */ 217 static char * 218 explode(const char *flags) 219 { 220 size_t len; 221 char *nf, *st; 222 const char *f; 223 224 if (flags == NULL) 225 return NULL; 226 227 for (f = flags; *f; f++) 228 if (!isalpha((unsigned char)*f)) 229 break; 230 231 if (*f) 232 return bmake_strdup(flags); 233 234 len = strlen(flags); 235 st = nf = bmake_malloc(len * 3 + 1); 236 while (*flags) { 237 *nf++ = '-'; 238 *nf++ = *flags++; 239 *nf++ = ' '; 240 } 241 *nf = '\0'; 242 return st; 243 } 244 245 static void 246 parse_debug_options(const char *argvalue) 247 { 248 const char *modules; 249 const char *mode; 250 char *fname; 251 int len; 252 253 for (modules = argvalue; *modules; ++modules) { 254 switch (*modules) { 255 case 'A': 256 debug = ~0; 257 break; 258 case 'a': 259 debug |= DEBUG_ARCH; 260 break; 261 case 'C': 262 debug |= DEBUG_CWD; 263 break; 264 case 'c': 265 debug |= DEBUG_COND; 266 break; 267 case 'd': 268 debug |= DEBUG_DIR; 269 break; 270 case 'e': 271 debug |= DEBUG_ERROR; 272 break; 273 case 'f': 274 debug |= DEBUG_FOR; 275 break; 276 case 'g': 277 if (modules[1] == '1') { 278 debug |= DEBUG_GRAPH1; 279 ++modules; 280 } 281 else if (modules[1] == '2') { 282 debug |= DEBUG_GRAPH2; 283 ++modules; 284 } 285 else if (modules[1] == '3') { 286 debug |= DEBUG_GRAPH3; 287 ++modules; 288 } 289 break; 290 case 'j': 291 debug |= DEBUG_JOB; 292 break; 293 case 'l': 294 debug |= DEBUG_LOUD; 295 break; 296 case 'M': 297 debug |= DEBUG_META; 298 break; 299 case 'm': 300 debug |= DEBUG_MAKE; 301 break; 302 case 'n': 303 debug |= DEBUG_SCRIPT; 304 break; 305 case 'p': 306 debug |= DEBUG_PARSE; 307 break; 308 case 's': 309 debug |= DEBUG_SUFF; 310 break; 311 case 't': 312 debug |= DEBUG_TARG; 313 break; 314 case 'V': 315 debugVflag = TRUE; 316 break; 317 case 'v': 318 debug |= DEBUG_VAR; 319 break; 320 case 'x': 321 debug |= DEBUG_SHELL; 322 break; 323 case 'F': 324 if (debug_file != stdout && debug_file != stderr) 325 fclose(debug_file); 326 if (*++modules == '+') { 327 modules++; 328 mode = "a"; 329 } else 330 mode = "w"; 331 if (strcmp(modules, "stdout") == 0) { 332 debug_file = stdout; 333 goto debug_setbuf; 334 } 335 if (strcmp(modules, "stderr") == 0) { 336 debug_file = stderr; 337 goto debug_setbuf; 338 } 339 len = strlen(modules); 340 fname = bmake_malloc(len + 20); 341 memcpy(fname, modules, len + 1); 342 /* Let the filename be modified by the pid */ 343 if (strcmp(fname + len - 3, ".%d") == 0) 344 snprintf(fname + len - 2, 20, "%d", getpid()); 345 debug_file = fopen(fname, mode); 346 if (!debug_file) { 347 fprintf(stderr, "Cannot open debug file %s\n", 348 fname); 349 usage(); 350 } 351 free(fname); 352 goto debug_setbuf; 353 default: 354 (void)fprintf(stderr, 355 "%s: illegal argument to d option -- %c\n", 356 progname, *modules); 357 usage(); 358 } 359 } 360 debug_setbuf: 361 /* 362 * Make the debug_file unbuffered, and make 363 * stdout line buffered (unless debugfile == stdout). 364 */ 365 setvbuf(debug_file, NULL, _IONBF, 0); 366 if (debug_file != stdout) { 367 setvbuf(stdout, NULL, _IOLBF, 0); 368 } 369 } 370 371 /* 372 * does path contain any relative components 373 */ 374 static int 375 is_relpath(const char *path) 376 { 377 const char *cp; 378 379 if (path[0] != '/') 380 return TRUE; 381 cp = path; 382 do { 383 cp = strstr(cp, "/."); 384 if (!cp) 385 break; 386 cp += 2; 387 if (cp[0] == '/' || cp[0] == '\0') 388 return TRUE; 389 else if (cp[0] == '.') { 390 if (cp[1] == '/' || cp[1] == '\0') 391 return TRUE; 392 } 393 } while (cp); 394 return FALSE; 395 } 396 397 /*- 398 * MainParseArgs -- 399 * Parse a given argument vector. Called from main() and from 400 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 401 * 402 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 403 * 404 * Results: 405 * None 406 * 407 * Side Effects: 408 * Various global and local flags will be set depending on the flags 409 * given 410 */ 411 static void 412 MainParseArgs(int argc, char **argv) 413 { 414 char *p; 415 int c = '?'; 416 int arginc; 417 char *argvalue; 418 const char *getopt_def; 419 struct stat sa, sb; 420 char *optscan; 421 Boolean inOption, dashDash = FALSE; 422 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 423 424 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 425 /* Can't actually use getopt(3) because rescanning is not portable */ 426 427 getopt_def = OPTFLAGS; 428 rearg: 429 inOption = FALSE; 430 optscan = NULL; 431 while(argc > 1) { 432 char *getopt_spec; 433 if(!inOption) 434 optscan = argv[1]; 435 c = *optscan++; 436 arginc = 0; 437 if(inOption) { 438 if(c == '\0') { 439 ++argv; 440 --argc; 441 inOption = FALSE; 442 continue; 443 } 444 } else { 445 if (c != '-' || dashDash) 446 break; 447 inOption = TRUE; 448 c = *optscan++; 449 } 450 /* '-' found at some earlier point */ 451 getopt_spec = strchr(getopt_def, c); 452 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 453 /* -<something> found, and <something> should have an arg */ 454 inOption = FALSE; 455 arginc = 1; 456 argvalue = optscan; 457 if(*argvalue == '\0') { 458 if (argc < 3) 459 goto noarg; 460 argvalue = argv[2]; 461 arginc = 2; 462 } 463 } else { 464 argvalue = NULL; 465 } 466 switch(c) { 467 case '\0': 468 arginc = 1; 469 inOption = FALSE; 470 break; 471 case 'B': 472 compatMake = TRUE; 473 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 474 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 475 break; 476 case 'C': 477 if (chdir(argvalue) == -1) { 478 (void)fprintf(stderr, 479 "%s: chdir %s: %s\n", 480 progname, argvalue, 481 strerror(errno)); 482 exit(1); 483 } 484 if (getcwd(curdir, MAXPATHLEN) == NULL) { 485 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 486 exit(2); 487 } 488 if (!is_relpath(argvalue) && 489 stat(argvalue, &sa) != -1 && 490 stat(curdir, &sb) != -1 && 491 sa.st_ino == sb.st_ino && 492 sa.st_dev == sb.st_dev) 493 strncpy(curdir, argvalue, MAXPATHLEN); 494 ignorePWD = TRUE; 495 break; 496 case 'D': 497 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 498 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 499 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 500 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 501 break; 502 case 'I': 503 if (argvalue == NULL) goto noarg; 504 Parse_AddIncludeDir(argvalue); 505 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 506 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 507 break; 508 case 'J': 509 if (argvalue == NULL) goto noarg; 510 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 511 (void)fprintf(stderr, 512 "%s: internal error -- J option malformed (%s)\n", 513 progname, argvalue); 514 usage(); 515 } 516 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 517 (fcntl(jp_1, F_GETFD, 0) < 0)) { 518 #if 0 519 (void)fprintf(stderr, 520 "%s: ###### warning -- J descriptors were closed!\n", 521 progname); 522 exit(2); 523 #endif 524 jp_0 = -1; 525 jp_1 = -1; 526 compatMake = TRUE; 527 } else { 528 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 529 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 530 jobServer = TRUE; 531 } 532 break; 533 case 'N': 534 noExecute = TRUE; 535 noRecursiveExecute = TRUE; 536 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 537 break; 538 case 'S': 539 keepgoing = FALSE; 540 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 541 break; 542 case 'T': 543 if (argvalue == NULL) goto noarg; 544 tracefile = bmake_strdup(argvalue); 545 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 546 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 547 break; 548 case 'V': 549 if (argvalue == NULL) goto noarg; 550 printVars = TRUE; 551 (void)Lst_AtEnd(variables, argvalue); 552 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 553 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 554 break; 555 case 'W': 556 parseWarnFatal = TRUE; 557 break; 558 case 'X': 559 varNoExportEnv = TRUE; 560 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 561 break; 562 case 'd': 563 if (argvalue == NULL) goto noarg; 564 /* If '-d-opts' don't pass to children */ 565 if (argvalue[0] == '-') 566 argvalue++; 567 else { 568 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 569 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 570 } 571 parse_debug_options(argvalue); 572 break; 573 case 'e': 574 checkEnvFirst = TRUE; 575 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 576 break; 577 case 'f': 578 if (argvalue == NULL) goto noarg; 579 (void)Lst_AtEnd(makefiles, argvalue); 580 break; 581 case 'i': 582 ignoreErrors = TRUE; 583 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 584 break; 585 case 'j': 586 if (argvalue == NULL) goto noarg; 587 forceJobs = TRUE; 588 maxJobs = strtol(argvalue, &p, 0); 589 if (*p != '\0' || maxJobs < 1) { 590 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 591 progname); 592 exit(1); 593 } 594 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 595 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 596 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 597 maxJobTokens = maxJobs; 598 break; 599 case 'k': 600 keepgoing = TRUE; 601 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 602 break; 603 case 'm': 604 if (argvalue == NULL) goto noarg; 605 /* look for magic parent directory search string */ 606 if (strncmp(".../", argvalue, 4) == 0) { 607 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 608 found_path, sizeof(found_path))) 609 break; /* nothing doing */ 610 (void)Dir_AddDir(sysIncPath, found_path); 611 } else { 612 (void)Dir_AddDir(sysIncPath, argvalue); 613 } 614 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 615 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 616 break; 617 case 'n': 618 noExecute = TRUE; 619 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 620 break; 621 case 'q': 622 queryFlag = TRUE; 623 /* Kind of nonsensical, wot? */ 624 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 625 break; 626 case 'r': 627 noBuiltins = TRUE; 628 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 629 break; 630 case 's': 631 beSilent = TRUE; 632 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 633 break; 634 case 't': 635 touchFlag = TRUE; 636 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 637 break; 638 case 'w': 639 enterFlag = TRUE; 640 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 641 break; 642 case '-': 643 dashDash = TRUE; 644 break; 645 default: 646 case '?': 647 #ifndef MAKE_NATIVE 648 fprintf(stderr, "getopt(%s) -> %d (%c)\n", 649 OPTFLAGS, c, c); 650 #endif 651 usage(); 652 } 653 argv += arginc; 654 argc -= arginc; 655 } 656 657 oldVars = TRUE; 658 659 /* 660 * See if the rest of the arguments are variable assignments and 661 * perform them if so. Else take them to be targets and stuff them 662 * on the end of the "create" list. 663 */ 664 for (; argc > 1; ++argv, --argc) 665 if (Parse_IsVar(argv[1])) { 666 Parse_DoVar(argv[1], VAR_CMD); 667 } else { 668 if (!*argv[1]) 669 Punt("illegal (null) argument."); 670 if (*argv[1] == '-' && !dashDash) 671 goto rearg; 672 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 673 } 674 675 return; 676 noarg: 677 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 678 progname, c); 679 usage(); 680 } 681 682 /*- 683 * Main_ParseArgLine -- 684 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 685 * is encountered and by main() when reading the .MAKEFLAGS envariable. 686 * Takes a line of arguments and breaks it into its 687 * component words and passes those words and the number of them to the 688 * MainParseArgs function. 689 * The line should have all its leading whitespace removed. 690 * 691 * Input: 692 * line Line to fracture 693 * 694 * Results: 695 * None 696 * 697 * Side Effects: 698 * Only those that come from the various arguments. 699 */ 700 void 701 Main_ParseArgLine(const char *line) 702 { 703 char **argv; /* Manufactured argument vector */ 704 int argc; /* Number of arguments in argv */ 705 char *args; /* Space used by the args */ 706 char *buf, *p1; 707 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 708 size_t len; 709 710 if (line == NULL) 711 return; 712 for (; *line == ' '; ++line) 713 continue; 714 if (!*line) 715 return; 716 717 #ifndef POSIX 718 { 719 /* 720 * $MAKE may simply be naming the make(1) binary 721 */ 722 char *cp; 723 724 if (!(cp = strrchr(line, '/'))) 725 cp = line; 726 if ((cp = strstr(cp, "make")) && 727 strcmp(cp, "make") == 0) 728 return; 729 } 730 #endif 731 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 732 (void)snprintf(buf, len, "%s %s", argv0, line); 733 free(p1); 734 735 argv = brk_string(buf, &argc, TRUE, &args); 736 if (argv == NULL) { 737 Error("Unterminated quoted string [%s]", buf); 738 free(buf); 739 return; 740 } 741 free(buf); 742 MainParseArgs(argc, argv); 743 744 free(args); 745 free(argv); 746 } 747 748 Boolean 749 Main_SetObjdir(const char *fmt, ...) 750 { 751 struct stat sb; 752 char *path; 753 char buf[MAXPATHLEN + 1]; 754 Boolean rc = FALSE; 755 va_list ap; 756 757 va_start(ap, fmt); 758 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 759 va_end(ap); 760 761 if (path[0] != '/') { 762 char buf2[MAXPATHLEN + 1]; 763 764 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 765 path = buf2; 766 } 767 768 /* look for the directory and try to chdir there */ 769 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 770 if (chdir(path)) { 771 (void)fprintf(stderr, "make warning: %s: %s.\n", 772 path, strerror(errno)); 773 } else { 774 strncpy(objdir, path, MAXPATHLEN); 775 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 776 setenv("PWD", objdir, 1); 777 Dir_InitDot(); 778 purge_cached_realpaths(); 779 rc = TRUE; 780 if (enterFlag && strcmp(objdir, curdir) != 0) 781 enterFlagObj = TRUE; 782 } 783 } 784 785 return rc; 786 } 787 788 static Boolean 789 Main_SetVarObjdir(const char *var, const char *suffix) 790 { 791 char *p, *path, *xpath; 792 793 if ((path = Var_Value(var, VAR_CMD, &p)) == NULL) 794 return FALSE; 795 796 /* expand variable substitutions */ 797 if (strchr(path, '$') != 0) 798 xpath = Var_Subst(NULL, path, VAR_GLOBAL, VARF_WANTRES); 799 else 800 xpath = path; 801 802 (void)Main_SetObjdir("%s%s", xpath, suffix); 803 804 if (xpath != path) 805 free(xpath); 806 free(p); 807 return TRUE; 808 } 809 810 /*- 811 * ReadAllMakefiles -- 812 * wrapper around ReadMakefile() to read all. 813 * 814 * Results: 815 * TRUE if ok, FALSE on error 816 */ 817 static int 818 ReadAllMakefiles(const void *p, const void *q) 819 { 820 return (ReadMakefile(p, q) == 0); 821 } 822 823 int 824 str2Lst_Append(Lst lp, char *str, const char *sep) 825 { 826 char *cp; 827 int n; 828 829 if (!sep) 830 sep = " \t"; 831 832 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 833 (void)Lst_AtEnd(lp, cp); 834 n++; 835 } 836 return (n); 837 } 838 839 #ifdef SIGINFO 840 /*ARGSUSED*/ 841 static void 842 siginfo(int signo MAKE_ATTR_UNUSED) 843 { 844 char dir[MAXPATHLEN]; 845 char str[2 * MAXPATHLEN]; 846 int len; 847 if (getcwd(dir, sizeof(dir)) == NULL) 848 return; 849 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 850 if (len > 0) 851 (void)write(STDERR_FILENO, str, (size_t)len); 852 } 853 #endif 854 855 /* 856 * Allow makefiles some control over the mode we run in. 857 */ 858 void 859 MakeMode(const char *mode) 860 { 861 char *mp = NULL; 862 863 if (!mode) 864 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 865 VAR_GLOBAL, VARF_WANTRES); 866 867 if (mode && *mode) { 868 if (strstr(mode, "compat")) { 869 compatMake = TRUE; 870 forceJobs = FALSE; 871 } 872 #if USE_META 873 if (strstr(mode, "meta")) 874 meta_mode_init(mode); 875 #endif 876 } 877 878 free(mp); 879 } 880 881 /*- 882 * main -- 883 * The main function, for obvious reasons. Initializes variables 884 * and a few modules, then parses the arguments give it in the 885 * environment and on the command line. Reads the system makefile 886 * followed by either Makefile, makefile or the file given by the 887 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 888 * flags it has received by then uses either the Make or the Compat 889 * module to create the initial list of targets. 890 * 891 * Results: 892 * If -q was given, exits -1 if anything was out-of-date. Else it exits 893 * 0. 894 * 895 * Side Effects: 896 * The program exits when done. Targets are created. etc. etc. etc. 897 */ 898 int 899 main(int argc, char **argv) 900 { 901 Lst targs; /* target nodes to create -- passed to Make_Init */ 902 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 903 struct stat sb, sa; 904 char *p1, *path; 905 char mdpath[MAXPATHLEN]; 906 #ifdef FORCE_MACHINE 907 const char *machine = FORCE_MACHINE; 908 #else 909 const char *machine = getenv("MACHINE"); 910 #endif 911 const char *machine_arch = getenv("MACHINE_ARCH"); 912 char *syspath = getenv("MAKESYSPATH"); 913 Lst sysMkPath; /* Path of sys.mk */ 914 char *cp = NULL, *start; 915 /* avoid faults on read-only strings */ 916 static char defsyspath[] = _PATH_DEFSYSPATH; 917 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 918 struct timeval rightnow; /* to initialize random seed */ 919 struct utsname utsname; 920 921 /* default to writing debug to stderr */ 922 debug_file = stderr; 923 924 #ifdef SIGINFO 925 (void)bmake_signal(SIGINFO, siginfo); 926 #endif 927 /* 928 * Set the seed to produce a different random sequence 929 * on each program execution. 930 */ 931 gettimeofday(&rightnow, NULL); 932 srandom(rightnow.tv_sec + rightnow.tv_usec); 933 934 if ((progname = strrchr(argv[0], '/')) != NULL) 935 progname++; 936 else 937 progname = argv[0]; 938 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 939 /* 940 * get rid of resource limit on file descriptors 941 */ 942 { 943 struct rlimit rl; 944 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 945 rl.rlim_cur != rl.rlim_max) { 946 rl.rlim_cur = rl.rlim_max; 947 (void)setrlimit(RLIMIT_NOFILE, &rl); 948 } 949 } 950 #endif 951 952 if (uname(&utsname) == -1) { 953 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 954 strerror(errno)); 955 exit(2); 956 } 957 958 /* 959 * Get the name of this type of MACHINE from utsname 960 * so we can share an executable for similar machines. 961 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 962 * 963 * Note that both MACHINE and MACHINE_ARCH are decided at 964 * run-time. 965 */ 966 if (!machine) { 967 #ifdef MAKE_NATIVE 968 machine = utsname.machine; 969 #else 970 #ifdef MAKE_MACHINE 971 machine = MAKE_MACHINE; 972 #else 973 machine = "unknown"; 974 #endif 975 #endif 976 } 977 978 if (!machine_arch) { 979 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH) 980 static char machine_arch_buf[sizeof(utsname.machine)]; 981 int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 982 size_t len = sizeof(machine_arch_buf); 983 984 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 985 &len, NULL, 0) < 0) { 986 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 987 strerror(errno)); 988 exit(2); 989 } 990 991 machine_arch = machine_arch_buf; 992 #else 993 #ifndef MACHINE_ARCH 994 #ifdef MAKE_MACHINE_ARCH 995 machine_arch = MAKE_MACHINE_ARCH; 996 #else 997 machine_arch = "unknown"; 998 #endif 999 #else 1000 machine_arch = MACHINE_ARCH; 1001 #endif 1002 #endif 1003 } 1004 1005 myPid = getpid(); /* remember this for vFork() */ 1006 1007 /* 1008 * Just in case MAKEOBJDIR wants us to do something tricky. 1009 */ 1010 Var_Init(); /* Initialize the lists of variables for 1011 * parsing arguments */ 1012 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 1013 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 1014 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 1015 #ifdef MAKE_VERSION 1016 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 1017 #endif 1018 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 1019 /* 1020 * This is the traditional preference for makefiles. 1021 */ 1022 #ifndef MAKEFILE_PREFERENCE_LIST 1023 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1024 #endif 1025 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1026 VAR_GLOBAL, 0); 1027 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 1028 1029 create = Lst_Init(FALSE); 1030 makefiles = Lst_Init(FALSE); 1031 printVars = FALSE; 1032 debugVflag = FALSE; 1033 variables = Lst_Init(FALSE); 1034 beSilent = FALSE; /* Print commands as executed */ 1035 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1036 noExecute = FALSE; /* Execute all commands */ 1037 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1038 keepgoing = FALSE; /* Stop on error */ 1039 allPrecious = FALSE; /* Remove targets when interrupted */ 1040 deleteOnError = FALSE; /* Historical default behavior */ 1041 queryFlag = FALSE; /* This is not just a check-run */ 1042 noBuiltins = FALSE; /* Read the built-in rules */ 1043 touchFlag = FALSE; /* Actually update targets */ 1044 debug = 0; /* No debug verbosity, please. */ 1045 jobsRunning = FALSE; 1046 1047 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1048 maxJobTokens = maxJobs; 1049 compatMake = FALSE; /* No compat mode */ 1050 ignorePWD = FALSE; 1051 1052 /* 1053 * Initialize the parsing, directory and variable modules to prepare 1054 * for the reading of inclusion paths and variable settings on the 1055 * command line 1056 */ 1057 1058 /* 1059 * Initialize various variables. 1060 * MAKE also gets this name, for compatibility 1061 * .MAKEFLAGS gets set to the empty string just in case. 1062 * MFLAGS also gets initialized empty, for compatibility. 1063 */ 1064 Parse_Init(); 1065 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1066 /* 1067 * Leave alone if it is an absolute path, or if it does 1068 * not contain a '/' in which case we need to find it in 1069 * the path, like execvp(3) and the shells do. 1070 */ 1071 p1 = argv[0]; 1072 } else { 1073 /* 1074 * A relative path, canonicalize it. 1075 */ 1076 p1 = cached_realpath(argv[0], mdpath); 1077 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1078 p1 = argv[0]; /* realpath failed */ 1079 } 1080 } 1081 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1082 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1083 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1084 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1085 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1086 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1087 /* some makefiles need to know this */ 1088 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1089 1090 /* 1091 * Set some other useful macros 1092 */ 1093 { 1094 char tmp[64], *ep; 1095 1096 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1097 if (makelevel < 0) 1098 makelevel = 0; 1099 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1100 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1101 snprintf(tmp, sizeof(tmp), "%u", myPid); 1102 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1103 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1104 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1105 } 1106 if (makelevel > 0) { 1107 char pn[1024]; 1108 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1109 progname = bmake_strdup(pn); 1110 } 1111 1112 #ifdef USE_META 1113 meta_init(); 1114 #endif 1115 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1116 1117 /* 1118 * First snag any flags out of the MAKE environment variable. 1119 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1120 * in a different format). 1121 */ 1122 #ifdef POSIX 1123 p1 = explode(getenv("MAKEFLAGS")); 1124 Main_ParseArgLine(p1); 1125 free(p1); 1126 #else 1127 Main_ParseArgLine(getenv("MAKE")); 1128 #endif 1129 1130 /* 1131 * Find where we are (now). 1132 * We take care of PWD for the automounter below... 1133 */ 1134 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1135 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1136 progname, strerror(errno)); 1137 exit(2); 1138 } 1139 1140 MainParseArgs(argc, argv); 1141 1142 if (enterFlag) 1143 printf("%s: Entering directory `%s'\n", progname, curdir); 1144 1145 /* 1146 * Verify that cwd is sane. 1147 */ 1148 if (stat(curdir, &sa) == -1) { 1149 (void)fprintf(stderr, "%s: %s: %s.\n", 1150 progname, curdir, strerror(errno)); 1151 exit(2); 1152 } 1153 1154 /* 1155 * All this code is so that we know where we are when we start up 1156 * on a different machine with pmake. 1157 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1158 * since the value of curdir can vary depending on how we got 1159 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1160 * or via subdir.mk in which case its likely a shell which does 1161 * not provide it. 1162 * So, to stop it breaking this case only, we ignore PWD if 1163 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1164 */ 1165 #ifndef NO_PWD_OVERRIDE 1166 if (!ignorePWD) { 1167 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1168 1169 if ((pwd = getenv("PWD")) != NULL && 1170 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1171 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1172 VAR_CMD, &ptmp2); 1173 1174 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1175 if (stat(pwd, &sb) == 0 && 1176 sa.st_ino == sb.st_ino && 1177 sa.st_dev == sb.st_dev) 1178 (void)strncpy(curdir, pwd, MAXPATHLEN); 1179 } 1180 } 1181 free(ptmp1); 1182 free(ptmp2); 1183 } 1184 #endif 1185 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1186 1187 /* 1188 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1189 * MAKEOBJDIR is set in the environment, try only that value 1190 * and fall back to .CURDIR if it does not exist. 1191 * 1192 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1193 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1194 * of these paths exist, just use .CURDIR. 1195 */ 1196 Dir_Init(curdir); 1197 (void)Main_SetObjdir("%s", curdir); 1198 1199 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1200 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1201 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1202 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1203 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1204 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1205 1206 /* 1207 * Initialize archive, target and suffix modules in preparation for 1208 * parsing the makefile(s) 1209 */ 1210 Arch_Init(); 1211 Targ_Init(); 1212 Suff_Init(); 1213 Trace_Init(tracefile); 1214 1215 DEFAULT = NULL; 1216 (void)time(&now); 1217 1218 Trace_Log(MAKESTART, NULL); 1219 1220 /* 1221 * Set up the .TARGETS variable to contain the list of targets to be 1222 * created. If none specified, make the variable empty -- the parser 1223 * will fill the thing in with the default or .MAIN target. 1224 */ 1225 if (!Lst_IsEmpty(create)) { 1226 LstNode ln; 1227 1228 for (ln = Lst_First(create); ln != NULL; 1229 ln = Lst_Succ(ln)) { 1230 char *name = (char *)Lst_Datum(ln); 1231 1232 Var_Append(".TARGETS", name, VAR_GLOBAL); 1233 } 1234 } else 1235 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1236 1237 1238 /* 1239 * If no user-supplied system path was given (through the -m option) 1240 * add the directories from the DEFSYSPATH (more than one may be given 1241 * as dir1:...:dirn) to the system include path. 1242 */ 1243 if (syspath == NULL || *syspath == '\0') 1244 syspath = defsyspath; 1245 else 1246 syspath = bmake_strdup(syspath); 1247 1248 for (start = syspath; *start != '\0'; start = cp) { 1249 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1250 continue; 1251 if (*cp == ':') { 1252 *cp++ = '\0'; 1253 } 1254 /* look for magic parent directory search string */ 1255 if (strncmp(".../", start, 4) != 0) { 1256 (void)Dir_AddDir(defIncPath, start); 1257 } else { 1258 if (Dir_FindHereOrAbove(curdir, start+4, 1259 found_path, sizeof(found_path))) { 1260 (void)Dir_AddDir(defIncPath, found_path); 1261 } 1262 } 1263 } 1264 if (syspath != defsyspath) 1265 free(syspath); 1266 1267 /* 1268 * Read in the built-in rules first, followed by the specified 1269 * makefile, if it was (makefile != NULL), or the default 1270 * makefile and Makefile, in that order, if it wasn't. 1271 */ 1272 if (!noBuiltins) { 1273 LstNode ln; 1274 1275 sysMkPath = Lst_Init(FALSE); 1276 Dir_Expand(_PATH_DEFSYSMK, 1277 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1278 sysMkPath); 1279 if (Lst_IsEmpty(sysMkPath)) 1280 Fatal("%s: no system rules (%s).", progname, 1281 _PATH_DEFSYSMK); 1282 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1283 if (ln == NULL) 1284 Fatal("%s: cannot open %s.", progname, 1285 (char *)Lst_Datum(ln)); 1286 } 1287 1288 if (!Lst_IsEmpty(makefiles)) { 1289 LstNode ln; 1290 1291 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1292 if (ln != NULL) 1293 Fatal("%s: cannot open %s.", progname, 1294 (char *)Lst_Datum(ln)); 1295 } else { 1296 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1297 VAR_CMD, VARF_WANTRES); 1298 if (p1) { 1299 (void)str2Lst_Append(makefiles, p1, NULL); 1300 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1301 free(p1); 1302 } 1303 } 1304 1305 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1306 if (!noBuiltins || !printVars) { 1307 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1308 VAR_CMD, VARF_WANTRES); 1309 doing_depend = TRUE; 1310 (void)ReadMakefile(makeDependfile, NULL); 1311 doing_depend = FALSE; 1312 } 1313 1314 if (enterFlagObj) 1315 printf("%s: Entering directory `%s'\n", progname, objdir); 1316 1317 MakeMode(NULL); 1318 1319 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1320 free(p1); 1321 1322 if (!forceJobs && !compatMake && 1323 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1324 char *value; 1325 int n; 1326 1327 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1328 n = strtol(value, NULL, 0); 1329 if (n < 1) { 1330 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1331 progname); 1332 exit(1); 1333 } 1334 if (n != maxJobs) { 1335 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1336 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1337 } 1338 maxJobs = n; 1339 maxJobTokens = maxJobs; 1340 forceJobs = TRUE; 1341 free(value); 1342 } 1343 1344 /* 1345 * Be compatible if user did not specify -j and did not explicitly 1346 * turned compatibility on 1347 */ 1348 if (!compatMake && !forceJobs) { 1349 compatMake = TRUE; 1350 } 1351 1352 if (!compatMake) 1353 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1354 if (DEBUG(JOB)) 1355 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1356 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1357 1358 if (!printVars) 1359 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1360 1361 /* 1362 * For compatibility, look at the directories in the VPATH variable 1363 * and add them to the search path, if the variable is defined. The 1364 * variable's value is in the same format as the PATH envariable, i.e. 1365 * <directory>:<directory>:<directory>... 1366 */ 1367 if (Var_Exists("VPATH", VAR_CMD)) { 1368 char *vpath, savec; 1369 /* 1370 * GCC stores string constants in read-only memory, but 1371 * Var_Subst will want to write this thing, so store it 1372 * in an array 1373 */ 1374 static char VPATH[] = "${VPATH}"; 1375 1376 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1377 path = vpath; 1378 do { 1379 /* skip to end of directory */ 1380 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1381 continue; 1382 /* Save terminator character so know when to stop */ 1383 savec = *cp; 1384 *cp = '\0'; 1385 /* Add directory to search path */ 1386 (void)Dir_AddDir(dirSearchPath, path); 1387 *cp = savec; 1388 path = cp + 1; 1389 } while (savec == ':'); 1390 free(vpath); 1391 } 1392 1393 /* 1394 * Now that all search paths have been read for suffixes et al, it's 1395 * time to add the default search path to their lists... 1396 */ 1397 Suff_DoPaths(); 1398 1399 /* 1400 * Propagate attributes through :: dependency lists. 1401 */ 1402 Targ_Propagate(); 1403 1404 /* print the initial graph, if the user requested it */ 1405 if (DEBUG(GRAPH1)) 1406 Targ_PrintGraph(1); 1407 1408 /* print the values of any variables requested by the user */ 1409 if (printVars) { 1410 LstNode ln; 1411 Boolean expandVars; 1412 1413 if (debugVflag) 1414 expandVars = FALSE; 1415 else 1416 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1417 for (ln = Lst_First(variables); ln != NULL; 1418 ln = Lst_Succ(ln)) { 1419 char *var = (char *)Lst_Datum(ln); 1420 char *value; 1421 1422 if (strchr(var, '$')) { 1423 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1424 VARF_WANTRES); 1425 } else if (expandVars) { 1426 char tmp[128]; 1427 1428 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1429 Fatal("%s: variable name too big: %s", 1430 progname, var); 1431 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1432 VARF_WANTRES); 1433 } else { 1434 value = Var_Value(var, VAR_GLOBAL, &p1); 1435 } 1436 printf("%s\n", value ? value : ""); 1437 free(p1); 1438 } 1439 } else { 1440 /* 1441 * Have now read the entire graph and need to make a list of 1442 * targets to create. If none was given on the command line, 1443 * we consult the parsing module to find the main target(s) 1444 * to create. 1445 */ 1446 if (Lst_IsEmpty(create)) 1447 targs = Parse_MainName(); 1448 else 1449 targs = Targ_FindList(create, TARG_CREATE); 1450 1451 if (!compatMake) { 1452 /* 1453 * Initialize job module before traversing the graph 1454 * now that any .BEGIN and .END targets have been read. 1455 * This is done only if the -q flag wasn't given 1456 * (to prevent the .BEGIN from being executed should 1457 * it exist). 1458 */ 1459 if (!queryFlag) { 1460 Job_Init(); 1461 jobsRunning = TRUE; 1462 } 1463 1464 /* Traverse the graph, checking on all the targets */ 1465 outOfDate = Make_Run(targs); 1466 } else { 1467 /* 1468 * Compat_Init will take care of creating all the 1469 * targets as well as initializing the module. 1470 */ 1471 Compat_Run(targs); 1472 } 1473 } 1474 1475 #ifdef CLEANUP 1476 Lst_Destroy(targs, NULL); 1477 Lst_Destroy(variables, NULL); 1478 Lst_Destroy(makefiles, NULL); 1479 Lst_Destroy(create, (FreeProc *)free); 1480 #endif 1481 1482 /* print the graph now it's been processed if the user requested it */ 1483 if (DEBUG(GRAPH2)) 1484 Targ_PrintGraph(2); 1485 1486 Trace_Log(MAKEEND, 0); 1487 1488 if (enterFlagObj) 1489 printf("%s: Leaving directory `%s'\n", progname, objdir); 1490 if (enterFlag) 1491 printf("%s: Leaving directory `%s'\n", progname, curdir); 1492 1493 #ifdef USE_META 1494 meta_finish(); 1495 #endif 1496 Suff_End(); 1497 Targ_End(); 1498 Arch_End(); 1499 Var_End(); 1500 Parse_End(); 1501 Dir_End(); 1502 Job_End(); 1503 Trace_End(); 1504 1505 return outOfDate ? 1 : 0; 1506 } 1507 1508 /*- 1509 * ReadMakefile -- 1510 * Open and parse the given makefile. 1511 * 1512 * Results: 1513 * 0 if ok. -1 if couldn't open file. 1514 * 1515 * Side Effects: 1516 * lots 1517 */ 1518 static int 1519 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1520 { 1521 const char *fname = p; /* makefile to read */ 1522 int fd; 1523 size_t len = MAXPATHLEN; 1524 char *name, *path = bmake_malloc(len); 1525 1526 if (!strcmp(fname, "-")) { 1527 Parse_File(NULL /*stdin*/, -1); 1528 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1529 } else { 1530 /* if we've chdir'd, rebuild the path name */ 1531 if (strcmp(curdir, objdir) && *fname != '/') { 1532 size_t plen = strlen(curdir) + strlen(fname) + 2; 1533 if (len < plen) 1534 path = bmake_realloc(path, len = 2 * plen); 1535 1536 (void)snprintf(path, len, "%s/%s", curdir, fname); 1537 fd = open(path, O_RDONLY); 1538 if (fd != -1) { 1539 fname = path; 1540 goto found; 1541 } 1542 1543 /* If curdir failed, try objdir (ala .depend) */ 1544 plen = strlen(objdir) + strlen(fname) + 2; 1545 if (len < plen) 1546 path = bmake_realloc(path, len = 2 * plen); 1547 (void)snprintf(path, len, "%s/%s", objdir, fname); 1548 fd = open(path, O_RDONLY); 1549 if (fd != -1) { 1550 fname = path; 1551 goto found; 1552 } 1553 } else { 1554 fd = open(fname, O_RDONLY); 1555 if (fd != -1) 1556 goto found; 1557 } 1558 /* look in -I and system include directories. */ 1559 name = Dir_FindFile(fname, parseIncPath); 1560 if (!name) 1561 name = Dir_FindFile(fname, 1562 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1563 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1564 free(name); 1565 free(path); 1566 return(-1); 1567 } 1568 fname = name; 1569 /* 1570 * set the MAKEFILE variable desired by System V fans -- the 1571 * placement of the setting here means it gets set to the last 1572 * makefile specified, as it is set by SysV make. 1573 */ 1574 found: 1575 if (!doing_depend) 1576 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1577 Parse_File(fname, fd); 1578 } 1579 free(path); 1580 return(0); 1581 } 1582 1583 1584 1585 /*- 1586 * Cmd_Exec -- 1587 * Execute the command in cmd, and return the output of that command 1588 * in a string. 1589 * 1590 * Results: 1591 * A string containing the output of the command, or the empty string 1592 * If errnum is not NULL, it contains the reason for the command failure 1593 * 1594 * Side Effects: 1595 * The string must be freed by the caller. 1596 */ 1597 char * 1598 Cmd_Exec(const char *cmd, const char **errnum) 1599 { 1600 const char *args[4]; /* Args for invoking the shell */ 1601 int fds[2]; /* Pipe streams */ 1602 int cpid; /* Child PID */ 1603 int pid; /* PID from wait() */ 1604 char *res; /* result */ 1605 WAIT_T status; /* command exit status */ 1606 Buffer buf; /* buffer to store the result */ 1607 char *cp; 1608 int cc; /* bytes read, or -1 */ 1609 int savederr; /* saved errno */ 1610 1611 1612 *errnum = NULL; 1613 1614 if (!shellName) 1615 Shell_Init(); 1616 /* 1617 * Set up arguments for shell 1618 */ 1619 args[0] = shellName; 1620 args[1] = "-c"; 1621 args[2] = cmd; 1622 args[3] = NULL; 1623 1624 /* 1625 * Open a pipe for fetching its output 1626 */ 1627 if (pipe(fds) == -1) { 1628 *errnum = "Couldn't create pipe for \"%s\""; 1629 goto bad; 1630 } 1631 1632 /* 1633 * Fork 1634 */ 1635 switch (cpid = vFork()) { 1636 case 0: 1637 /* 1638 * Close input side of pipe 1639 */ 1640 (void)close(fds[0]); 1641 1642 /* 1643 * Duplicate the output stream to the shell's output, then 1644 * shut the extra thing down. Note we don't fetch the error 1645 * stream...why not? Why? 1646 */ 1647 (void)dup2(fds[1], 1); 1648 (void)close(fds[1]); 1649 1650 Var_ExportVars(); 1651 1652 (void)execv(shellPath, UNCONST(args)); 1653 _exit(1); 1654 /*NOTREACHED*/ 1655 1656 case -1: 1657 *errnum = "Couldn't exec \"%s\""; 1658 goto bad; 1659 1660 default: 1661 /* 1662 * No need for the writing half 1663 */ 1664 (void)close(fds[1]); 1665 1666 savederr = 0; 1667 Buf_Init(&buf, 0); 1668 1669 do { 1670 char result[BUFSIZ]; 1671 cc = read(fds[0], result, sizeof(result)); 1672 if (cc > 0) 1673 Buf_AddBytes(&buf, cc, result); 1674 } 1675 while (cc > 0 || (cc == -1 && errno == EINTR)); 1676 if (cc == -1) 1677 savederr = errno; 1678 1679 /* 1680 * Close the input side of the pipe. 1681 */ 1682 (void)close(fds[0]); 1683 1684 /* 1685 * Wait for the process to exit. 1686 */ 1687 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1688 JobReapChild(pid, status, FALSE); 1689 continue; 1690 } 1691 cc = Buf_Size(&buf); 1692 res = Buf_Destroy(&buf, FALSE); 1693 1694 if (savederr != 0) 1695 *errnum = "Couldn't read shell's output for \"%s\""; 1696 1697 if (WIFSIGNALED(status)) 1698 *errnum = "\"%s\" exited on a signal"; 1699 else if (WEXITSTATUS(status) != 0) 1700 *errnum = "\"%s\" returned non-zero status"; 1701 1702 /* 1703 * Null-terminate the result, convert newlines to spaces and 1704 * install it in the variable. 1705 */ 1706 res[cc] = '\0'; 1707 cp = &res[cc]; 1708 1709 if (cc > 0 && *--cp == '\n') { 1710 /* 1711 * A final newline is just stripped 1712 */ 1713 *cp-- = '\0'; 1714 } 1715 while (cp >= res) { 1716 if (*cp == '\n') { 1717 *cp = ' '; 1718 } 1719 cp--; 1720 } 1721 break; 1722 } 1723 return res; 1724 bad: 1725 res = bmake_malloc(1); 1726 *res = '\0'; 1727 return res; 1728 } 1729 1730 /*- 1731 * Error -- 1732 * Print an error message given its format. 1733 * 1734 * Results: 1735 * None. 1736 * 1737 * Side Effects: 1738 * The message is printed. 1739 */ 1740 /* VARARGS */ 1741 void 1742 Error(const char *fmt, ...) 1743 { 1744 va_list ap; 1745 FILE *err_file; 1746 1747 err_file = debug_file; 1748 if (err_file == stdout) 1749 err_file = stderr; 1750 (void)fflush(stdout); 1751 for (;;) { 1752 va_start(ap, fmt); 1753 fprintf(err_file, "%s: ", progname); 1754 (void)vfprintf(err_file, fmt, ap); 1755 va_end(ap); 1756 (void)fprintf(err_file, "\n"); 1757 (void)fflush(err_file); 1758 if (err_file == stderr) 1759 break; 1760 err_file = stderr; 1761 } 1762 } 1763 1764 /*- 1765 * Fatal -- 1766 * Produce a Fatal error message. If jobs are running, waits for them 1767 * to finish. 1768 * 1769 * Results: 1770 * None 1771 * 1772 * Side Effects: 1773 * The program exits 1774 */ 1775 /* VARARGS */ 1776 void 1777 Fatal(const char *fmt, ...) 1778 { 1779 va_list ap; 1780 1781 va_start(ap, fmt); 1782 if (jobsRunning) 1783 Job_Wait(); 1784 1785 (void)fflush(stdout); 1786 (void)vfprintf(stderr, fmt, ap); 1787 va_end(ap); 1788 (void)fprintf(stderr, "\n"); 1789 (void)fflush(stderr); 1790 1791 PrintOnError(NULL, NULL); 1792 1793 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1794 Targ_PrintGraph(2); 1795 Trace_Log(MAKEERROR, 0); 1796 exit(2); /* Not 1 so -q can distinguish error */ 1797 } 1798 1799 /* 1800 * Punt -- 1801 * Major exception once jobs are being created. Kills all jobs, prints 1802 * a message and exits. 1803 * 1804 * Results: 1805 * None 1806 * 1807 * Side Effects: 1808 * All children are killed indiscriminately and the program Lib_Exits 1809 */ 1810 /* VARARGS */ 1811 void 1812 Punt(const char *fmt, ...) 1813 { 1814 va_list ap; 1815 1816 va_start(ap, fmt); 1817 (void)fflush(stdout); 1818 (void)fprintf(stderr, "%s: ", progname); 1819 (void)vfprintf(stderr, fmt, ap); 1820 va_end(ap); 1821 (void)fprintf(stderr, "\n"); 1822 (void)fflush(stderr); 1823 1824 PrintOnError(NULL, NULL); 1825 1826 DieHorribly(); 1827 } 1828 1829 /*- 1830 * DieHorribly -- 1831 * Exit without giving a message. 1832 * 1833 * Results: 1834 * None 1835 * 1836 * Side Effects: 1837 * A big one... 1838 */ 1839 void 1840 DieHorribly(void) 1841 { 1842 if (jobsRunning) 1843 Job_AbortAll(); 1844 if (DEBUG(GRAPH2)) 1845 Targ_PrintGraph(2); 1846 Trace_Log(MAKEERROR, 0); 1847 exit(2); /* Not 1, so -q can distinguish error */ 1848 } 1849 1850 /* 1851 * Finish -- 1852 * Called when aborting due to errors in child shell to signal 1853 * abnormal exit. 1854 * 1855 * Results: 1856 * None 1857 * 1858 * Side Effects: 1859 * The program exits 1860 */ 1861 void 1862 Finish(int errors) 1863 /* number of errors encountered in Make_Make */ 1864 { 1865 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1866 } 1867 1868 /* 1869 * eunlink -- 1870 * Remove a file carefully, avoiding directories. 1871 */ 1872 int 1873 eunlink(const char *file) 1874 { 1875 struct stat st; 1876 1877 if (lstat(file, &st) == -1) 1878 return -1; 1879 1880 if (S_ISDIR(st.st_mode)) { 1881 errno = EISDIR; 1882 return -1; 1883 } 1884 return unlink(file); 1885 } 1886 1887 /* 1888 * execError -- 1889 * Print why exec failed, avoiding stdio. 1890 */ 1891 void 1892 execError(const char *af, const char *av) 1893 { 1894 #ifdef USE_IOVEC 1895 int i = 0; 1896 struct iovec iov[8]; 1897 #define IOADD(s) \ 1898 (void)(iov[i].iov_base = UNCONST(s), \ 1899 iov[i].iov_len = strlen(iov[i].iov_base), \ 1900 i++) 1901 #else 1902 #define IOADD(s) (void)write(2, s, strlen(s)) 1903 #endif 1904 1905 IOADD(progname); 1906 IOADD(": "); 1907 IOADD(af); 1908 IOADD("("); 1909 IOADD(av); 1910 IOADD(") failed ("); 1911 IOADD(strerror(errno)); 1912 IOADD(")\n"); 1913 1914 #ifdef USE_IOVEC 1915 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1916 continue; 1917 #endif 1918 } 1919 1920 /* 1921 * usage -- 1922 * exit with usage message 1923 */ 1924 static void 1925 usage(void) 1926 { 1927 char *p; 1928 if ((p = strchr(progname, '[')) != NULL) 1929 *p = '\0'; 1930 1931 (void)fprintf(stderr, 1932 "usage: %s [-BeikNnqrstWwX] \n\ 1933 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1934 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1935 [-V variable] [variable=value] [target ...]\n", progname); 1936 exit(2); 1937 } 1938 1939 /* 1940 * realpath(3) can get expensive, cache results... 1941 */ 1942 static GNode *cached_realpaths = NULL; 1943 1944 static GNode * 1945 get_cached_realpaths(void) 1946 { 1947 1948 if (!cached_realpaths) { 1949 cached_realpaths = Targ_NewGN("Realpath"); 1950 #ifndef DEBUG_REALPATH_CACHE 1951 cached_realpaths->flags = INTERNAL; 1952 #endif 1953 } 1954 1955 return cached_realpaths; 1956 } 1957 1958 /* purge any relative paths */ 1959 static void 1960 purge_cached_realpaths(void) 1961 { 1962 GNode *cache = get_cached_realpaths(); 1963 Hash_Entry *he, *nhe; 1964 Hash_Search hs; 1965 1966 he = Hash_EnumFirst(&cache->context, &hs); 1967 while (he) { 1968 nhe = Hash_EnumNext(&hs); 1969 if (he->name[0] != '/') { 1970 if (DEBUG(DIR)) 1971 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1972 Hash_DeleteEntry(&cache->context, he); 1973 } 1974 he = nhe; 1975 } 1976 } 1977 1978 char * 1979 cached_realpath(const char *pathname, char *resolved) 1980 { 1981 GNode *cache; 1982 char *rp, *cp; 1983 1984 if (!pathname || !pathname[0]) 1985 return NULL; 1986 1987 cache = get_cached_realpaths(); 1988 1989 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1990 /* a hit */ 1991 strlcpy(resolved, rp, MAXPATHLEN); 1992 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1993 Var_Set(pathname, rp, cache, 0); 1994 } 1995 free(cp); 1996 return rp ? resolved : NULL; 1997 } 1998 1999 int 2000 PrintAddr(void *a, void *b) 2001 { 2002 printf("%lx ", (unsigned long) a); 2003 return b ? 0 : 0; 2004 } 2005 2006 2007 static int 2008 addErrorCMD(void *cmdp, void *gnp MAKE_ATTR_UNUSED) 2009 { 2010 if (cmdp == NULL) 2011 return 1; /* stop */ 2012 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2013 return 0; 2014 } 2015 2016 void 2017 PrintOnError(GNode *gn, const char *s) 2018 { 2019 static GNode *en = NULL; 2020 char tmp[64]; 2021 char *cp; 2022 2023 if (s) 2024 printf("%s", s); 2025 2026 printf("\n%s: stopped in %s\n", progname, curdir); 2027 2028 if (en) 2029 return; /* we've been here! */ 2030 if (gn) { 2031 /* 2032 * We can print this even if there is no .ERROR target. 2033 */ 2034 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 2035 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2036 Lst_ForEach(gn->commands, addErrorCMD, gn); 2037 } 2038 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2039 sizeof(tmp) - 1); 2040 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2041 if (cp) { 2042 if (*cp) 2043 printf("%s", cp); 2044 free(cp); 2045 } 2046 fflush(stdout); 2047 2048 /* 2049 * Finally, see if there is a .ERROR target, and run it if so. 2050 */ 2051 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2052 if (en) { 2053 en->type |= OP_SPECIAL; 2054 Compat_Make(en, en); 2055 } 2056 } 2057 2058 void 2059 Main_ExportMAKEFLAGS(Boolean first) 2060 { 2061 static int once = 1; 2062 char tmp[64]; 2063 char *s; 2064 2065 if (once != first) 2066 return; 2067 once = 0; 2068 2069 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2070 sizeof(tmp)); 2071 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 2072 if (s && *s) { 2073 #ifdef POSIX 2074 setenv("MAKEFLAGS", s, 1); 2075 #else 2076 setenv("MAKE", s, 1); 2077 #endif 2078 } 2079 } 2080 2081 char * 2082 getTmpdir(void) 2083 { 2084 static char *tmpdir = NULL; 2085 2086 if (!tmpdir) { 2087 struct stat st; 2088 2089 /* 2090 * Honor $TMPDIR but only if it is valid. 2091 * Ensure it ends with /. 2092 */ 2093 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2094 VARF_WANTRES); 2095 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2096 free(tmpdir); 2097 tmpdir = bmake_strdup(_PATH_TMP); 2098 } 2099 } 2100 return tmpdir; 2101 } 2102 2103 /* 2104 * Create and open a temp file using "pattern". 2105 * If "fnamep" is provided set it to a copy of the filename created. 2106 * Otherwise unlink the file once open. 2107 */ 2108 int 2109 mkTempFile(const char *pattern, char **fnamep) 2110 { 2111 static char *tmpdir = NULL; 2112 char tfile[MAXPATHLEN]; 2113 int fd; 2114 2115 if (!pattern) 2116 pattern = TMPPAT; 2117 if (!tmpdir) 2118 tmpdir = getTmpdir(); 2119 if (pattern[0] == '/') { 2120 snprintf(tfile, sizeof(tfile), "%s", pattern); 2121 } else { 2122 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2123 } 2124 if ((fd = mkstemp(tfile)) < 0) 2125 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2126 if (fnamep) { 2127 *fnamep = bmake_strdup(tfile); 2128 } else { 2129 unlink(tfile); /* we just want the descriptor */ 2130 } 2131 return fd; 2132 } 2133 2134 /* 2135 * Convert a string representation of a boolean. 2136 * Anything that looks like "No", "False", "Off", "0" etc, 2137 * is FALSE, otherwise TRUE. 2138 */ 2139 Boolean 2140 s2Boolean(const char *s, Boolean bf) 2141 { 2142 if (s) { 2143 switch(*s) { 2144 case '\0': /* not set - the default wins */ 2145 break; 2146 case '0': 2147 case 'F': 2148 case 'f': 2149 case 'N': 2150 case 'n': 2151 bf = FALSE; 2152 break; 2153 case 'O': 2154 case 'o': 2155 switch (s[1]) { 2156 case 'F': 2157 case 'f': 2158 bf = FALSE; 2159 break; 2160 default: 2161 bf = TRUE; 2162 break; 2163 } 2164 break; 2165 default: 2166 bf = TRUE; 2167 break; 2168 } 2169 } 2170 return (bf); 2171 } 2172 2173 /* 2174 * Return a Boolean based on setting of a knob. 2175 * 2176 * If the knob is not set, the supplied default is the return value. 2177 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2178 * is FALSE, otherwise TRUE. 2179 */ 2180 Boolean 2181 getBoolean(const char *name, Boolean bf) 2182 { 2183 char tmp[64]; 2184 char *cp; 2185 2186 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2187 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2188 2189 if (cp) { 2190 bf = s2Boolean(cp, bf); 2191 free(cp); 2192 } 2193 } 2194 return (bf); 2195 } 2196