1 /* $NetBSD: main.c,v 1.273 2017/10/28 21:54:54 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 1.273 2017/10/28 21:54:54 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 1.273 2017/10/28 21:54:54 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 int printVars; /* -[vV] argument */ 163 #define COMPAT_VARS 1 164 #define EXPAND_VARS 2 165 static Lst variables; /* list of variables to print */ 166 int maxJobs; /* -j argument */ 167 static int maxJobTokens; /* -j argument */ 168 Boolean compatMake; /* -B argument */ 169 int debug; /* -d argument */ 170 Boolean debugVflag; /* -dV */ 171 Boolean noExecute; /* -n flag */ 172 Boolean noRecursiveExecute; /* -N flag */ 173 Boolean keepgoing; /* -k flag */ 174 Boolean queryFlag; /* -q flag */ 175 Boolean touchFlag; /* -t flag */ 176 Boolean enterFlag; /* -w flag */ 177 Boolean enterFlagObj; /* -w and objdir != srcdir */ 178 Boolean ignoreErrors; /* -i flag */ 179 Boolean beSilent; /* -s flag */ 180 Boolean oldVars; /* variable substitution style */ 181 Boolean checkEnvFirst; /* -e flag */ 182 Boolean parseWarnFatal; /* -W flag */ 183 Boolean jobServer; /* -J flag */ 184 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 185 Boolean varNoExportEnv; /* -X flag */ 186 Boolean doing_depend; /* Set while reading .depend */ 187 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 188 static const char * tracefile; 189 static void MainParseArgs(int, char **); 190 static int ReadMakefile(const void *, const void *); 191 static void usage(void) MAKE_ATTR_DEAD; 192 static void purge_cached_realpaths(void); 193 194 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 195 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 196 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 197 char *progname; /* the program name */ 198 char *makeDependfile; 199 pid_t myPid; 200 int makelevel; 201 202 Boolean forceJobs = FALSE; 203 204 /* 205 * On some systems MACHINE is defined as something other than 206 * what we want. 207 */ 208 #ifdef FORCE_MACHINE 209 # undef MACHINE 210 # define MACHINE FORCE_MACHINE 211 #endif 212 213 extern Lst parseIncPath; 214 215 /* 216 * For compatibility with the POSIX version of MAKEFLAGS that includes 217 * all the options with out -, convert flags to -f -l -a -g -s. 218 */ 219 static char * 220 explode(const char *flags) 221 { 222 size_t len; 223 char *nf, *st; 224 const char *f; 225 226 if (flags == NULL) 227 return NULL; 228 229 for (f = flags; *f; f++) 230 if (!isalpha((unsigned char)*f)) 231 break; 232 233 if (*f) 234 return bmake_strdup(flags); 235 236 len = strlen(flags); 237 st = nf = bmake_malloc(len * 3 + 1); 238 while (*flags) { 239 *nf++ = '-'; 240 *nf++ = *flags++; 241 *nf++ = ' '; 242 } 243 *nf = '\0'; 244 return st; 245 } 246 247 static void 248 parse_debug_options(const char *argvalue) 249 { 250 const char *modules; 251 const char *mode; 252 char *fname; 253 int len; 254 255 for (modules = argvalue; *modules; ++modules) { 256 switch (*modules) { 257 case 'A': 258 debug = ~0; 259 break; 260 case 'a': 261 debug |= DEBUG_ARCH; 262 break; 263 case 'C': 264 debug |= DEBUG_CWD; 265 break; 266 case 'c': 267 debug |= DEBUG_COND; 268 break; 269 case 'd': 270 debug |= DEBUG_DIR; 271 break; 272 case 'e': 273 debug |= DEBUG_ERROR; 274 break; 275 case 'f': 276 debug |= DEBUG_FOR; 277 break; 278 case 'g': 279 if (modules[1] == '1') { 280 debug |= DEBUG_GRAPH1; 281 ++modules; 282 } 283 else if (modules[1] == '2') { 284 debug |= DEBUG_GRAPH2; 285 ++modules; 286 } 287 else if (modules[1] == '3') { 288 debug |= DEBUG_GRAPH3; 289 ++modules; 290 } 291 break; 292 case 'j': 293 debug |= DEBUG_JOB; 294 break; 295 case 'l': 296 debug |= DEBUG_LOUD; 297 break; 298 case 'M': 299 debug |= DEBUG_META; 300 break; 301 case 'm': 302 debug |= DEBUG_MAKE; 303 break; 304 case 'n': 305 debug |= DEBUG_SCRIPT; 306 break; 307 case 'p': 308 debug |= DEBUG_PARSE; 309 break; 310 case 's': 311 debug |= DEBUG_SUFF; 312 break; 313 case 't': 314 debug |= DEBUG_TARG; 315 break; 316 case 'V': 317 debugVflag = TRUE; 318 break; 319 case 'v': 320 debug |= DEBUG_VAR; 321 break; 322 case 'x': 323 debug |= DEBUG_SHELL; 324 break; 325 case 'F': 326 if (debug_file != stdout && debug_file != stderr) 327 fclose(debug_file); 328 if (*++modules == '+') { 329 modules++; 330 mode = "a"; 331 } else 332 mode = "w"; 333 if (strcmp(modules, "stdout") == 0) { 334 debug_file = stdout; 335 goto debug_setbuf; 336 } 337 if (strcmp(modules, "stderr") == 0) { 338 debug_file = stderr; 339 goto debug_setbuf; 340 } 341 len = strlen(modules); 342 fname = bmake_malloc(len + 20); 343 memcpy(fname, modules, len + 1); 344 /* Let the filename be modified by the pid */ 345 if (strcmp(fname + len - 3, ".%d") == 0) 346 snprintf(fname + len - 2, 20, "%d", getpid()); 347 debug_file = fopen(fname, mode); 348 if (!debug_file) { 349 fprintf(stderr, "Cannot open debug file %s\n", 350 fname); 351 usage(); 352 } 353 free(fname); 354 goto debug_setbuf; 355 default: 356 (void)fprintf(stderr, 357 "%s: illegal argument to d option -- %c\n", 358 progname, *modules); 359 usage(); 360 } 361 } 362 debug_setbuf: 363 /* 364 * Make the debug_file unbuffered, and make 365 * stdout line buffered (unless debugfile == stdout). 366 */ 367 setvbuf(debug_file, NULL, _IONBF, 0); 368 if (debug_file != stdout) { 369 setvbuf(stdout, NULL, _IOLBF, 0); 370 } 371 } 372 373 /* 374 * does path contain any relative components 375 */ 376 static int 377 is_relpath(const char *path) 378 { 379 const char *cp; 380 381 if (path[0] != '/') 382 return TRUE; 383 cp = path; 384 do { 385 cp = strstr(cp, "/."); 386 if (!cp) 387 break; 388 cp += 2; 389 if (cp[0] == '/' || cp[0] == '\0') 390 return TRUE; 391 else if (cp[0] == '.') { 392 if (cp[1] == '/' || cp[1] == '\0') 393 return TRUE; 394 } 395 } while (cp); 396 return FALSE; 397 } 398 399 /*- 400 * MainParseArgs -- 401 * Parse a given argument vector. Called from main() and from 402 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 403 * 404 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 405 * 406 * Results: 407 * None 408 * 409 * Side Effects: 410 * Various global and local flags will be set depending on the flags 411 * given 412 */ 413 static void 414 MainParseArgs(int argc, char **argv) 415 { 416 char *p; 417 int c = '?'; 418 int arginc; 419 char *argvalue; 420 const char *getopt_def; 421 struct stat sa, sb; 422 char *optscan; 423 Boolean inOption, dashDash = FALSE; 424 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 425 426 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w" 427 /* Can't actually use getopt(3) because rescanning is not portable */ 428 429 getopt_def = OPTFLAGS; 430 rearg: 431 inOption = FALSE; 432 optscan = NULL; 433 while(argc > 1) { 434 char *getopt_spec; 435 if(!inOption) 436 optscan = argv[1]; 437 c = *optscan++; 438 arginc = 0; 439 if(inOption) { 440 if(c == '\0') { 441 ++argv; 442 --argc; 443 inOption = FALSE; 444 continue; 445 } 446 } else { 447 if (c != '-' || dashDash) 448 break; 449 inOption = TRUE; 450 c = *optscan++; 451 } 452 /* '-' found at some earlier point */ 453 getopt_spec = strchr(getopt_def, c); 454 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 455 /* -<something> found, and <something> should have an arg */ 456 inOption = FALSE; 457 arginc = 1; 458 argvalue = optscan; 459 if(*argvalue == '\0') { 460 if (argc < 3) 461 goto noarg; 462 argvalue = argv[2]; 463 arginc = 2; 464 } 465 } else { 466 argvalue = NULL; 467 } 468 switch(c) { 469 case '\0': 470 arginc = 1; 471 inOption = FALSE; 472 break; 473 case 'B': 474 compatMake = TRUE; 475 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 476 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 477 break; 478 case 'C': 479 if (chdir(argvalue) == -1) { 480 (void)fprintf(stderr, 481 "%s: chdir %s: %s\n", 482 progname, argvalue, 483 strerror(errno)); 484 exit(1); 485 } 486 if (getcwd(curdir, MAXPATHLEN) == NULL) { 487 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 488 exit(2); 489 } 490 if (!is_relpath(argvalue) && 491 stat(argvalue, &sa) != -1 && 492 stat(curdir, &sb) != -1 && 493 sa.st_ino == sb.st_ino && 494 sa.st_dev == sb.st_dev) 495 strncpy(curdir, argvalue, MAXPATHLEN); 496 ignorePWD = TRUE; 497 break; 498 case 'D': 499 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 500 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 501 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 502 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 503 break; 504 case 'I': 505 if (argvalue == NULL) goto noarg; 506 Parse_AddIncludeDir(argvalue); 507 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 508 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 509 break; 510 case 'J': 511 if (argvalue == NULL) goto noarg; 512 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 513 (void)fprintf(stderr, 514 "%s: internal error -- J option malformed (%s)\n", 515 progname, argvalue); 516 usage(); 517 } 518 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 519 (fcntl(jp_1, F_GETFD, 0) < 0)) { 520 #if 0 521 (void)fprintf(stderr, 522 "%s: ###### warning -- J descriptors were closed!\n", 523 progname); 524 exit(2); 525 #endif 526 jp_0 = -1; 527 jp_1 = -1; 528 compatMake = TRUE; 529 } else { 530 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 531 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 532 jobServer = TRUE; 533 } 534 break; 535 case 'N': 536 noExecute = TRUE; 537 noRecursiveExecute = TRUE; 538 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 539 break; 540 case 'S': 541 keepgoing = FALSE; 542 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 543 break; 544 case 'T': 545 if (argvalue == NULL) goto noarg; 546 tracefile = bmake_strdup(argvalue); 547 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 548 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 549 break; 550 case 'V': 551 case 'v': 552 if (argvalue == NULL) goto noarg; 553 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 554 (void)Lst_AtEnd(variables, argvalue); 555 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 556 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 557 break; 558 case 'W': 559 parseWarnFatal = TRUE; 560 break; 561 case 'X': 562 varNoExportEnv = TRUE; 563 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 564 break; 565 case 'd': 566 if (argvalue == NULL) goto noarg; 567 /* If '-d-opts' don't pass to children */ 568 if (argvalue[0] == '-') 569 argvalue++; 570 else { 571 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 572 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 573 } 574 parse_debug_options(argvalue); 575 break; 576 case 'e': 577 checkEnvFirst = TRUE; 578 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 579 break; 580 case 'f': 581 if (argvalue == NULL) goto noarg; 582 (void)Lst_AtEnd(makefiles, argvalue); 583 break; 584 case 'i': 585 ignoreErrors = TRUE; 586 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 587 break; 588 case 'j': 589 if (argvalue == NULL) goto noarg; 590 forceJobs = TRUE; 591 maxJobs = strtol(argvalue, &p, 0); 592 if (*p != '\0' || maxJobs < 1) { 593 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 594 progname); 595 exit(1); 596 } 597 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 598 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 599 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 600 maxJobTokens = maxJobs; 601 break; 602 case 'k': 603 keepgoing = TRUE; 604 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 605 break; 606 case 'm': 607 if (argvalue == NULL) goto noarg; 608 /* look for magic parent directory search string */ 609 if (strncmp(".../", argvalue, 4) == 0) { 610 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 611 found_path, sizeof(found_path))) 612 break; /* nothing doing */ 613 (void)Dir_AddDir(sysIncPath, found_path); 614 } else { 615 (void)Dir_AddDir(sysIncPath, argvalue); 616 } 617 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 618 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 619 break; 620 case 'n': 621 noExecute = TRUE; 622 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 623 break; 624 case 'q': 625 queryFlag = TRUE; 626 /* Kind of nonsensical, wot? */ 627 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 628 break; 629 case 'r': 630 noBuiltins = TRUE; 631 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 632 break; 633 case 's': 634 beSilent = TRUE; 635 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 636 break; 637 case 't': 638 touchFlag = TRUE; 639 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 640 break; 641 case 'w': 642 enterFlag = TRUE; 643 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 644 break; 645 case '-': 646 dashDash = TRUE; 647 break; 648 default: 649 case '?': 650 #ifndef MAKE_NATIVE 651 fprintf(stderr, "getopt(%s) -> %d (%c)\n", 652 OPTFLAGS, c, c); 653 #endif 654 usage(); 655 } 656 argv += arginc; 657 argc -= arginc; 658 } 659 660 oldVars = TRUE; 661 662 /* 663 * See if the rest of the arguments are variable assignments and 664 * perform them if so. Else take them to be targets and stuff them 665 * on the end of the "create" list. 666 */ 667 for (; argc > 1; ++argv, --argc) 668 if (Parse_IsVar(argv[1])) { 669 Parse_DoVar(argv[1], VAR_CMD); 670 } else { 671 if (!*argv[1]) 672 Punt("illegal (null) argument."); 673 if (*argv[1] == '-' && !dashDash) 674 goto rearg; 675 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 676 } 677 678 return; 679 noarg: 680 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 681 progname, c); 682 usage(); 683 } 684 685 /*- 686 * Main_ParseArgLine -- 687 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 688 * is encountered and by main() when reading the .MAKEFLAGS envariable. 689 * Takes a line of arguments and breaks it into its 690 * component words and passes those words and the number of them to the 691 * MainParseArgs function. 692 * The line should have all its leading whitespace removed. 693 * 694 * Input: 695 * line Line to fracture 696 * 697 * Results: 698 * None 699 * 700 * Side Effects: 701 * Only those that come from the various arguments. 702 */ 703 void 704 Main_ParseArgLine(const char *line) 705 { 706 char **argv; /* Manufactured argument vector */ 707 int argc; /* Number of arguments in argv */ 708 char *args; /* Space used by the args */ 709 char *buf, *p1; 710 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 711 size_t len; 712 713 if (line == NULL) 714 return; 715 for (; *line == ' '; ++line) 716 continue; 717 if (!*line) 718 return; 719 720 #ifndef POSIX 721 { 722 /* 723 * $MAKE may simply be naming the make(1) binary 724 */ 725 char *cp; 726 727 if (!(cp = strrchr(line, '/'))) 728 cp = line; 729 if ((cp = strstr(cp, "make")) && 730 strcmp(cp, "make") == 0) 731 return; 732 } 733 #endif 734 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 735 (void)snprintf(buf, len, "%s %s", argv0, line); 736 free(p1); 737 738 argv = brk_string(buf, &argc, TRUE, &args); 739 if (argv == NULL) { 740 Error("Unterminated quoted string [%s]", buf); 741 free(buf); 742 return; 743 } 744 free(buf); 745 MainParseArgs(argc, argv); 746 747 free(args); 748 free(argv); 749 } 750 751 Boolean 752 Main_SetObjdir(const char *fmt, ...) 753 { 754 struct stat sb; 755 char *path; 756 char buf[MAXPATHLEN + 1]; 757 char buf2[MAXPATHLEN + 1]; 758 Boolean rc = FALSE; 759 va_list ap; 760 761 va_start(ap, fmt); 762 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 763 va_end(ap); 764 765 if (path[0] != '/') { 766 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 767 path = buf2; 768 } 769 770 /* look for the directory and try to chdir there */ 771 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 772 if (chdir(path)) { 773 (void)fprintf(stderr, "make warning: %s: %s.\n", 774 path, strerror(errno)); 775 } else { 776 strncpy(objdir, path, MAXPATHLEN); 777 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 778 setenv("PWD", objdir, 1); 779 Dir_InitDot(); 780 purge_cached_realpaths(); 781 rc = TRUE; 782 if (enterFlag && strcmp(objdir, curdir) != 0) 783 enterFlagObj = TRUE; 784 } 785 } 786 787 return rc; 788 } 789 790 static Boolean 791 Main_SetVarObjdir(const char *var, const char *suffix) 792 { 793 char *p, *path, *xpath; 794 795 if ((path = Var_Value(var, VAR_CMD, &p)) == NULL || 796 *path == '\0') 797 return FALSE; 798 799 /* expand variable substitutions */ 800 if (strchr(path, '$') != 0) 801 xpath = Var_Subst(NULL, path, VAR_GLOBAL, VARF_WANTRES); 802 else 803 xpath = path; 804 805 (void)Main_SetObjdir("%s%s", xpath, suffix); 806 807 if (xpath != path) 808 free(xpath); 809 free(p); 810 return TRUE; 811 } 812 813 /*- 814 * ReadAllMakefiles -- 815 * wrapper around ReadMakefile() to read all. 816 * 817 * Results: 818 * TRUE if ok, FALSE on error 819 */ 820 static int 821 ReadAllMakefiles(const void *p, const void *q) 822 { 823 return (ReadMakefile(p, q) == 0); 824 } 825 826 int 827 str2Lst_Append(Lst lp, char *str, const char *sep) 828 { 829 char *cp; 830 int n; 831 832 if (!sep) 833 sep = " \t"; 834 835 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 836 (void)Lst_AtEnd(lp, cp); 837 n++; 838 } 839 return (n); 840 } 841 842 #ifdef SIGINFO 843 /*ARGSUSED*/ 844 static void 845 siginfo(int signo MAKE_ATTR_UNUSED) 846 { 847 char dir[MAXPATHLEN]; 848 char str[2 * MAXPATHLEN]; 849 int len; 850 if (getcwd(dir, sizeof(dir)) == NULL) 851 return; 852 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 853 if (len > 0) 854 (void)write(STDERR_FILENO, str, (size_t)len); 855 } 856 #endif 857 858 /* 859 * Allow makefiles some control over the mode we run in. 860 */ 861 void 862 MakeMode(const char *mode) 863 { 864 char *mp = NULL; 865 866 if (!mode) 867 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 868 VAR_GLOBAL, VARF_WANTRES); 869 870 if (mode && *mode) { 871 if (strstr(mode, "compat")) { 872 compatMake = TRUE; 873 forceJobs = FALSE; 874 } 875 #if USE_META 876 if (strstr(mode, "meta")) 877 meta_mode_init(mode); 878 #endif 879 } 880 881 free(mp); 882 } 883 884 static void 885 doPrintVars(void) 886 { 887 LstNode ln; 888 Boolean expandVars; 889 890 if (printVars == EXPAND_VARS) 891 expandVars = TRUE; 892 else if (debugVflag) 893 expandVars = FALSE; 894 else 895 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 896 897 for (ln = Lst_First(variables); ln != NULL; 898 ln = Lst_Succ(ln)) { 899 char *var = (char *)Lst_Datum(ln); 900 char *value; 901 char *p1; 902 903 if (strchr(var, '$')) { 904 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 905 VARF_WANTRES); 906 } else if (expandVars) { 907 char tmp[128]; 908 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 909 910 if (len >= (int)sizeof(tmp)) 911 Fatal("%s: variable name too big: %s", 912 progname, var); 913 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 914 VARF_WANTRES); 915 } else { 916 value = Var_Value(var, VAR_GLOBAL, &p1); 917 } 918 printf("%s\n", value ? value : ""); 919 free(p1); 920 } 921 } 922 923 static Boolean 924 runTargets(void) 925 { 926 Lst targs; /* target nodes to create -- passed to Make_Init */ 927 Boolean outOfDate; /* FALSE if all targets up to date */ 928 929 /* 930 * Have now read the entire graph and need to make a list of 931 * targets to create. If none was given on the command line, 932 * we consult the parsing module to find the main target(s) 933 * to create. 934 */ 935 if (Lst_IsEmpty(create)) 936 targs = Parse_MainName(); 937 else 938 targs = Targ_FindList(create, TARG_CREATE); 939 940 if (!compatMake) { 941 /* 942 * Initialize job module before traversing the graph 943 * now that any .BEGIN and .END targets have been read. 944 * This is done only if the -q flag wasn't given 945 * (to prevent the .BEGIN from being executed should 946 * it exist). 947 */ 948 if (!queryFlag) { 949 Job_Init(); 950 jobsRunning = TRUE; 951 } 952 953 /* Traverse the graph, checking on all the targets */ 954 outOfDate = Make_Run(targs); 955 } else { 956 /* 957 * Compat_Init will take care of creating all the 958 * targets as well as initializing the module. 959 */ 960 Compat_Run(targs); 961 outOfDate = FALSE; 962 } 963 Lst_Destroy(targs, NULL); 964 return outOfDate; 965 } 966 967 /*- 968 * main -- 969 * The main function, for obvious reasons. Initializes variables 970 * and a few modules, then parses the arguments give it in the 971 * environment and on the command line. Reads the system makefile 972 * followed by either Makefile, makefile or the file given by the 973 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 974 * flags it has received by then uses either the Make or the Compat 975 * module to create the initial list of targets. 976 * 977 * Results: 978 * If -q was given, exits -1 if anything was out-of-date. Else it exits 979 * 0. 980 * 981 * Side Effects: 982 * The program exits when done. Targets are created. etc. etc. etc. 983 */ 984 int 985 main(int argc, char **argv) 986 { 987 Boolean outOfDate; /* FALSE if all targets up to date */ 988 struct stat sb, sa; 989 char *p1, *path; 990 char mdpath[MAXPATHLEN]; 991 #ifdef FORCE_MACHINE 992 const char *machine = FORCE_MACHINE; 993 #else 994 const char *machine = getenv("MACHINE"); 995 #endif 996 const char *machine_arch = getenv("MACHINE_ARCH"); 997 char *syspath = getenv("MAKESYSPATH"); 998 Lst sysMkPath; /* Path of sys.mk */ 999 char *cp = NULL, *start; 1000 /* avoid faults on read-only strings */ 1001 static char defsyspath[] = _PATH_DEFSYSPATH; 1002 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 1003 struct timeval rightnow; /* to initialize random seed */ 1004 struct utsname utsname; 1005 1006 /* default to writing debug to stderr */ 1007 debug_file = stderr; 1008 1009 #ifdef SIGINFO 1010 (void)bmake_signal(SIGINFO, siginfo); 1011 #endif 1012 /* 1013 * Set the seed to produce a different random sequence 1014 * on each program execution. 1015 */ 1016 gettimeofday(&rightnow, NULL); 1017 srandom(rightnow.tv_sec + rightnow.tv_usec); 1018 1019 if ((progname = strrchr(argv[0], '/')) != NULL) 1020 progname++; 1021 else 1022 progname = argv[0]; 1023 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1024 /* 1025 * get rid of resource limit on file descriptors 1026 */ 1027 { 1028 struct rlimit rl; 1029 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1030 rl.rlim_cur != rl.rlim_max) { 1031 rl.rlim_cur = rl.rlim_max; 1032 (void)setrlimit(RLIMIT_NOFILE, &rl); 1033 } 1034 } 1035 #endif 1036 1037 if (uname(&utsname) == -1) { 1038 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1039 strerror(errno)); 1040 exit(2); 1041 } 1042 1043 /* 1044 * Get the name of this type of MACHINE from utsname 1045 * so we can share an executable for similar machines. 1046 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1047 * 1048 * Note that both MACHINE and MACHINE_ARCH are decided at 1049 * run-time. 1050 */ 1051 if (!machine) { 1052 #ifdef MAKE_NATIVE 1053 machine = utsname.machine; 1054 #else 1055 #ifdef MAKE_MACHINE 1056 machine = MAKE_MACHINE; 1057 #else 1058 machine = "unknown"; 1059 #endif 1060 #endif 1061 } 1062 1063 if (!machine_arch) { 1064 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH) 1065 static char machine_arch_buf[sizeof(utsname.machine)]; 1066 int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1067 size_t len = sizeof(machine_arch_buf); 1068 1069 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1070 &len, NULL, 0) < 0) { 1071 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1072 strerror(errno)); 1073 exit(2); 1074 } 1075 1076 machine_arch = machine_arch_buf; 1077 #else 1078 #ifndef MACHINE_ARCH 1079 #ifdef MAKE_MACHINE_ARCH 1080 machine_arch = MAKE_MACHINE_ARCH; 1081 #else 1082 machine_arch = "unknown"; 1083 #endif 1084 #else 1085 machine_arch = MACHINE_ARCH; 1086 #endif 1087 #endif 1088 } 1089 1090 myPid = getpid(); /* remember this for vFork() */ 1091 1092 /* 1093 * Just in case MAKEOBJDIR wants us to do something tricky. 1094 */ 1095 Var_Init(); /* Initialize the lists of variables for 1096 * parsing arguments */ 1097 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 1098 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 1099 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 1100 #ifdef MAKE_VERSION 1101 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 1102 #endif 1103 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 1104 /* 1105 * This is the traditional preference for makefiles. 1106 */ 1107 #ifndef MAKEFILE_PREFERENCE_LIST 1108 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1109 #endif 1110 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1111 VAR_GLOBAL, 0); 1112 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 1113 1114 create = Lst_Init(FALSE); 1115 makefiles = Lst_Init(FALSE); 1116 printVars = 0; 1117 debugVflag = FALSE; 1118 variables = Lst_Init(FALSE); 1119 beSilent = FALSE; /* Print commands as executed */ 1120 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1121 noExecute = FALSE; /* Execute all commands */ 1122 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1123 keepgoing = FALSE; /* Stop on error */ 1124 allPrecious = FALSE; /* Remove targets when interrupted */ 1125 deleteOnError = FALSE; /* Historical default behavior */ 1126 queryFlag = FALSE; /* This is not just a check-run */ 1127 noBuiltins = FALSE; /* Read the built-in rules */ 1128 touchFlag = FALSE; /* Actually update targets */ 1129 debug = 0; /* No debug verbosity, please. */ 1130 jobsRunning = FALSE; 1131 1132 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1133 maxJobTokens = maxJobs; 1134 compatMake = FALSE; /* No compat mode */ 1135 ignorePWD = FALSE; 1136 1137 /* 1138 * Initialize the parsing, directory and variable modules to prepare 1139 * for the reading of inclusion paths and variable settings on the 1140 * command line 1141 */ 1142 1143 /* 1144 * Initialize various variables. 1145 * MAKE also gets this name, for compatibility 1146 * .MAKEFLAGS gets set to the empty string just in case. 1147 * MFLAGS also gets initialized empty, for compatibility. 1148 */ 1149 Parse_Init(); 1150 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1151 /* 1152 * Leave alone if it is an absolute path, or if it does 1153 * not contain a '/' in which case we need to find it in 1154 * the path, like execvp(3) and the shells do. 1155 */ 1156 p1 = argv[0]; 1157 } else { 1158 /* 1159 * A relative path, canonicalize it. 1160 */ 1161 p1 = cached_realpath(argv[0], mdpath); 1162 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1163 p1 = argv[0]; /* realpath failed */ 1164 } 1165 } 1166 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1167 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1168 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1169 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1170 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1171 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1172 /* some makefiles need to know this */ 1173 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1174 1175 /* 1176 * Set some other useful macros 1177 */ 1178 { 1179 char tmp[64], *ep; 1180 1181 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1182 if (makelevel < 0) 1183 makelevel = 0; 1184 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1185 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1186 snprintf(tmp, sizeof(tmp), "%u", myPid); 1187 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1188 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1189 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1190 } 1191 if (makelevel > 0) { 1192 char pn[1024]; 1193 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1194 progname = bmake_strdup(pn); 1195 } 1196 1197 #ifdef USE_META 1198 meta_init(); 1199 #endif 1200 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1201 1202 /* 1203 * First snag any flags out of the MAKE environment variable. 1204 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1205 * in a different format). 1206 */ 1207 #ifdef POSIX 1208 p1 = explode(getenv("MAKEFLAGS")); 1209 Main_ParseArgLine(p1); 1210 free(p1); 1211 #else 1212 Main_ParseArgLine(getenv("MAKE")); 1213 #endif 1214 1215 /* 1216 * Find where we are (now). 1217 * We take care of PWD for the automounter below... 1218 */ 1219 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1220 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1221 progname, strerror(errno)); 1222 exit(2); 1223 } 1224 1225 MainParseArgs(argc, argv); 1226 1227 if (enterFlag) 1228 printf("%s: Entering directory `%s'\n", progname, curdir); 1229 1230 /* 1231 * Verify that cwd is sane. 1232 */ 1233 if (stat(curdir, &sa) == -1) { 1234 (void)fprintf(stderr, "%s: %s: %s.\n", 1235 progname, curdir, strerror(errno)); 1236 exit(2); 1237 } 1238 1239 /* 1240 * All this code is so that we know where we are when we start up 1241 * on a different machine with pmake. 1242 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1243 * since the value of curdir can vary depending on how we got 1244 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1245 * or via subdir.mk in which case its likely a shell which does 1246 * not provide it. 1247 * So, to stop it breaking this case only, we ignore PWD if 1248 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1249 */ 1250 #ifndef NO_PWD_OVERRIDE 1251 if (!ignorePWD) { 1252 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1253 1254 if ((pwd = getenv("PWD")) != NULL && 1255 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1256 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1257 VAR_CMD, &ptmp2); 1258 1259 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1260 if (stat(pwd, &sb) == 0 && 1261 sa.st_ino == sb.st_ino && 1262 sa.st_dev == sb.st_dev) 1263 (void)strncpy(curdir, pwd, MAXPATHLEN); 1264 } 1265 } 1266 free(ptmp1); 1267 free(ptmp2); 1268 } 1269 #endif 1270 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1271 1272 /* 1273 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1274 * MAKEOBJDIR is set in the environment, try only that value 1275 * and fall back to .CURDIR if it does not exist. 1276 * 1277 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1278 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1279 * of these paths exist, just use .CURDIR. 1280 */ 1281 Dir_Init(curdir); 1282 (void)Main_SetObjdir("%s", curdir); 1283 1284 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1285 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1286 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1287 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1288 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1289 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1290 1291 /* 1292 * Initialize archive, target and suffix modules in preparation for 1293 * parsing the makefile(s) 1294 */ 1295 Arch_Init(); 1296 Targ_Init(); 1297 Suff_Init(); 1298 Trace_Init(tracefile); 1299 1300 DEFAULT = NULL; 1301 (void)time(&now); 1302 1303 Trace_Log(MAKESTART, NULL); 1304 1305 /* 1306 * Set up the .TARGETS variable to contain the list of targets to be 1307 * created. If none specified, make the variable empty -- the parser 1308 * will fill the thing in with the default or .MAIN target. 1309 */ 1310 if (!Lst_IsEmpty(create)) { 1311 LstNode ln; 1312 1313 for (ln = Lst_First(create); ln != NULL; 1314 ln = Lst_Succ(ln)) { 1315 char *name = (char *)Lst_Datum(ln); 1316 1317 Var_Append(".TARGETS", name, VAR_GLOBAL); 1318 } 1319 } else 1320 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1321 1322 1323 /* 1324 * If no user-supplied system path was given (through the -m option) 1325 * add the directories from the DEFSYSPATH (more than one may be given 1326 * as dir1:...:dirn) to the system include path. 1327 */ 1328 if (syspath == NULL || *syspath == '\0') 1329 syspath = defsyspath; 1330 else 1331 syspath = bmake_strdup(syspath); 1332 1333 for (start = syspath; *start != '\0'; start = cp) { 1334 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1335 continue; 1336 if (*cp == ':') { 1337 *cp++ = '\0'; 1338 } 1339 /* look for magic parent directory search string */ 1340 if (strncmp(".../", start, 4) != 0) { 1341 (void)Dir_AddDir(defIncPath, start); 1342 } else { 1343 if (Dir_FindHereOrAbove(curdir, start+4, 1344 found_path, sizeof(found_path))) { 1345 (void)Dir_AddDir(defIncPath, found_path); 1346 } 1347 } 1348 } 1349 if (syspath != defsyspath) 1350 free(syspath); 1351 1352 /* 1353 * Read in the built-in rules first, followed by the specified 1354 * makefile, if it was (makefile != NULL), or the default 1355 * makefile and Makefile, in that order, if it wasn't. 1356 */ 1357 if (!noBuiltins) { 1358 LstNode ln; 1359 1360 sysMkPath = Lst_Init(FALSE); 1361 Dir_Expand(_PATH_DEFSYSMK, 1362 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1363 sysMkPath); 1364 if (Lst_IsEmpty(sysMkPath)) 1365 Fatal("%s: no system rules (%s).", progname, 1366 _PATH_DEFSYSMK); 1367 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1368 if (ln == NULL) 1369 Fatal("%s: cannot open %s.", progname, 1370 (char *)Lst_Datum(ln)); 1371 } 1372 1373 if (!Lst_IsEmpty(makefiles)) { 1374 LstNode ln; 1375 1376 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1377 if (ln != NULL) 1378 Fatal("%s: cannot open %s.", progname, 1379 (char *)Lst_Datum(ln)); 1380 } else { 1381 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1382 VAR_CMD, VARF_WANTRES); 1383 if (p1) { 1384 (void)str2Lst_Append(makefiles, p1, NULL); 1385 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1386 free(p1); 1387 } 1388 } 1389 1390 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1391 if (!noBuiltins || !printVars) { 1392 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1393 VAR_CMD, VARF_WANTRES); 1394 doing_depend = TRUE; 1395 (void)ReadMakefile(makeDependfile, NULL); 1396 doing_depend = FALSE; 1397 } 1398 1399 if (enterFlagObj) 1400 printf("%s: Entering directory `%s'\n", progname, objdir); 1401 1402 MakeMode(NULL); 1403 1404 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1405 free(p1); 1406 1407 if (!forceJobs && !compatMake && 1408 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1409 char *value; 1410 int n; 1411 1412 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1413 n = strtol(value, NULL, 0); 1414 if (n < 1) { 1415 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1416 progname); 1417 exit(1); 1418 } 1419 if (n != maxJobs) { 1420 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1421 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1422 } 1423 maxJobs = n; 1424 maxJobTokens = maxJobs; 1425 forceJobs = TRUE; 1426 free(value); 1427 } 1428 1429 /* 1430 * Be compatible if user did not specify -j and did not explicitly 1431 * turned compatibility on 1432 */ 1433 if (!compatMake && !forceJobs) { 1434 compatMake = TRUE; 1435 } 1436 1437 if (!compatMake) 1438 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1439 if (DEBUG(JOB)) 1440 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1441 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1442 1443 if (!printVars) 1444 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1445 1446 /* 1447 * For compatibility, look at the directories in the VPATH variable 1448 * and add them to the search path, if the variable is defined. The 1449 * variable's value is in the same format as the PATH envariable, i.e. 1450 * <directory>:<directory>:<directory>... 1451 */ 1452 if (Var_Exists("VPATH", VAR_CMD)) { 1453 char *vpath, savec; 1454 /* 1455 * GCC stores string constants in read-only memory, but 1456 * Var_Subst will want to write this thing, so store it 1457 * in an array 1458 */ 1459 static char VPATH[] = "${VPATH}"; 1460 1461 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1462 path = vpath; 1463 do { 1464 /* skip to end of directory */ 1465 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1466 continue; 1467 /* Save terminator character so know when to stop */ 1468 savec = *cp; 1469 *cp = '\0'; 1470 /* Add directory to search path */ 1471 (void)Dir_AddDir(dirSearchPath, path); 1472 *cp = savec; 1473 path = cp + 1; 1474 } while (savec == ':'); 1475 free(vpath); 1476 } 1477 1478 /* 1479 * Now that all search paths have been read for suffixes et al, it's 1480 * time to add the default search path to their lists... 1481 */ 1482 Suff_DoPaths(); 1483 1484 /* 1485 * Propagate attributes through :: dependency lists. 1486 */ 1487 Targ_Propagate(); 1488 1489 /* print the initial graph, if the user requested it */ 1490 if (DEBUG(GRAPH1)) 1491 Targ_PrintGraph(1); 1492 1493 /* print the values of any variables requested by the user */ 1494 if (printVars) { 1495 doPrintVars(); 1496 outOfDate = FALSE; 1497 } else { 1498 outOfDate = runTargets(); 1499 } 1500 1501 #ifdef CLEANUP 1502 Lst_Destroy(variables, NULL); 1503 Lst_Destroy(makefiles, NULL); 1504 Lst_Destroy(create, (FreeProc *)free); 1505 #endif 1506 1507 /* print the graph now it's been processed if the user requested it */ 1508 if (DEBUG(GRAPH2)) 1509 Targ_PrintGraph(2); 1510 1511 Trace_Log(MAKEEND, 0); 1512 1513 if (enterFlagObj) 1514 printf("%s: Leaving directory `%s'\n", progname, objdir); 1515 if (enterFlag) 1516 printf("%s: Leaving directory `%s'\n", progname, curdir); 1517 1518 #ifdef USE_META 1519 meta_finish(); 1520 #endif 1521 Suff_End(); 1522 Targ_End(); 1523 Arch_End(); 1524 Var_End(); 1525 Parse_End(); 1526 Dir_End(); 1527 Job_End(); 1528 Trace_End(); 1529 1530 return outOfDate ? 1 : 0; 1531 } 1532 1533 /*- 1534 * ReadMakefile -- 1535 * Open and parse the given makefile. 1536 * 1537 * Results: 1538 * 0 if ok. -1 if couldn't open file. 1539 * 1540 * Side Effects: 1541 * lots 1542 */ 1543 static int 1544 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1545 { 1546 const char *fname = p; /* makefile to read */ 1547 int fd; 1548 size_t len = MAXPATHLEN; 1549 char *name, *path = bmake_malloc(len); 1550 1551 if (!strcmp(fname, "-")) { 1552 Parse_File(NULL /*stdin*/, -1); 1553 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1554 } else { 1555 /* if we've chdir'd, rebuild the path name */ 1556 if (strcmp(curdir, objdir) && *fname != '/') { 1557 size_t plen = strlen(curdir) + strlen(fname) + 2; 1558 if (len < plen) 1559 path = bmake_realloc(path, len = 2 * plen); 1560 1561 (void)snprintf(path, len, "%s/%s", curdir, fname); 1562 fd = open(path, O_RDONLY); 1563 if (fd != -1) { 1564 fname = path; 1565 goto found; 1566 } 1567 1568 /* If curdir failed, try objdir (ala .depend) */ 1569 plen = strlen(objdir) + strlen(fname) + 2; 1570 if (len < plen) 1571 path = bmake_realloc(path, len = 2 * plen); 1572 (void)snprintf(path, len, "%s/%s", objdir, fname); 1573 fd = open(path, O_RDONLY); 1574 if (fd != -1) { 1575 fname = path; 1576 goto found; 1577 } 1578 } else { 1579 fd = open(fname, O_RDONLY); 1580 if (fd != -1) 1581 goto found; 1582 } 1583 /* look in -I and system include directories. */ 1584 name = Dir_FindFile(fname, parseIncPath); 1585 if (!name) 1586 name = Dir_FindFile(fname, 1587 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1588 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1589 free(name); 1590 free(path); 1591 return(-1); 1592 } 1593 fname = name; 1594 /* 1595 * set the MAKEFILE variable desired by System V fans -- the 1596 * placement of the setting here means it gets set to the last 1597 * makefile specified, as it is set by SysV make. 1598 */ 1599 found: 1600 if (!doing_depend) 1601 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1602 Parse_File(fname, fd); 1603 } 1604 free(path); 1605 return(0); 1606 } 1607 1608 1609 1610 /*- 1611 * Cmd_Exec -- 1612 * Execute the command in cmd, and return the output of that command 1613 * in a string. 1614 * 1615 * Results: 1616 * A string containing the output of the command, or the empty string 1617 * If errnum is not NULL, it contains the reason for the command failure 1618 * 1619 * Side Effects: 1620 * The string must be freed by the caller. 1621 */ 1622 char * 1623 Cmd_Exec(const char *cmd, const char **errnum) 1624 { 1625 const char *args[4]; /* Args for invoking the shell */ 1626 int fds[2]; /* Pipe streams */ 1627 int cpid; /* Child PID */ 1628 int pid; /* PID from wait() */ 1629 char *res; /* result */ 1630 WAIT_T status; /* command exit status */ 1631 Buffer buf; /* buffer to store the result */ 1632 char *cp; 1633 int cc; /* bytes read, or -1 */ 1634 int savederr; /* saved errno */ 1635 1636 1637 *errnum = NULL; 1638 1639 if (!shellName) 1640 Shell_Init(); 1641 /* 1642 * Set up arguments for shell 1643 */ 1644 args[0] = shellName; 1645 args[1] = "-c"; 1646 args[2] = cmd; 1647 args[3] = NULL; 1648 1649 /* 1650 * Open a pipe for fetching its output 1651 */ 1652 if (pipe(fds) == -1) { 1653 *errnum = "Couldn't create pipe for \"%s\""; 1654 goto bad; 1655 } 1656 1657 /* 1658 * Fork 1659 */ 1660 switch (cpid = vFork()) { 1661 case 0: 1662 /* 1663 * Close input side of pipe 1664 */ 1665 (void)close(fds[0]); 1666 1667 /* 1668 * Duplicate the output stream to the shell's output, then 1669 * shut the extra thing down. Note we don't fetch the error 1670 * stream...why not? Why? 1671 */ 1672 (void)dup2(fds[1], 1); 1673 (void)close(fds[1]); 1674 1675 Var_ExportVars(); 1676 1677 (void)execv(shellPath, UNCONST(args)); 1678 _exit(1); 1679 /*NOTREACHED*/ 1680 1681 case -1: 1682 *errnum = "Couldn't exec \"%s\""; 1683 goto bad; 1684 1685 default: 1686 /* 1687 * No need for the writing half 1688 */ 1689 (void)close(fds[1]); 1690 1691 savederr = 0; 1692 Buf_Init(&buf, 0); 1693 1694 do { 1695 char result[BUFSIZ]; 1696 cc = read(fds[0], result, sizeof(result)); 1697 if (cc > 0) 1698 Buf_AddBytes(&buf, cc, result); 1699 } 1700 while (cc > 0 || (cc == -1 && errno == EINTR)); 1701 if (cc == -1) 1702 savederr = errno; 1703 1704 /* 1705 * Close the input side of the pipe. 1706 */ 1707 (void)close(fds[0]); 1708 1709 /* 1710 * Wait for the process to exit. 1711 */ 1712 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1713 JobReapChild(pid, status, FALSE); 1714 continue; 1715 } 1716 cc = Buf_Size(&buf); 1717 res = Buf_Destroy(&buf, FALSE); 1718 1719 if (savederr != 0) 1720 *errnum = "Couldn't read shell's output for \"%s\""; 1721 1722 if (WIFSIGNALED(status)) 1723 *errnum = "\"%s\" exited on a signal"; 1724 else if (WEXITSTATUS(status) != 0) 1725 *errnum = "\"%s\" returned non-zero status"; 1726 1727 /* 1728 * Null-terminate the result, convert newlines to spaces and 1729 * install it in the variable. 1730 */ 1731 res[cc] = '\0'; 1732 cp = &res[cc]; 1733 1734 if (cc > 0 && *--cp == '\n') { 1735 /* 1736 * A final newline is just stripped 1737 */ 1738 *cp-- = '\0'; 1739 } 1740 while (cp >= res) { 1741 if (*cp == '\n') { 1742 *cp = ' '; 1743 } 1744 cp--; 1745 } 1746 break; 1747 } 1748 return res; 1749 bad: 1750 res = bmake_malloc(1); 1751 *res = '\0'; 1752 return res; 1753 } 1754 1755 /*- 1756 * Error -- 1757 * Print an error message given its format. 1758 * 1759 * Results: 1760 * None. 1761 * 1762 * Side Effects: 1763 * The message is printed. 1764 */ 1765 /* VARARGS */ 1766 void 1767 Error(const char *fmt, ...) 1768 { 1769 va_list ap; 1770 FILE *err_file; 1771 1772 err_file = debug_file; 1773 if (err_file == stdout) 1774 err_file = stderr; 1775 (void)fflush(stdout); 1776 for (;;) { 1777 va_start(ap, fmt); 1778 fprintf(err_file, "%s: ", progname); 1779 (void)vfprintf(err_file, fmt, ap); 1780 va_end(ap); 1781 (void)fprintf(err_file, "\n"); 1782 (void)fflush(err_file); 1783 if (err_file == stderr) 1784 break; 1785 err_file = stderr; 1786 } 1787 } 1788 1789 /*- 1790 * Fatal -- 1791 * Produce a Fatal error message. If jobs are running, waits for them 1792 * to finish. 1793 * 1794 * Results: 1795 * None 1796 * 1797 * Side Effects: 1798 * The program exits 1799 */ 1800 /* VARARGS */ 1801 void 1802 Fatal(const char *fmt, ...) 1803 { 1804 va_list ap; 1805 1806 va_start(ap, fmt); 1807 if (jobsRunning) 1808 Job_Wait(); 1809 1810 (void)fflush(stdout); 1811 (void)vfprintf(stderr, fmt, ap); 1812 va_end(ap); 1813 (void)fprintf(stderr, "\n"); 1814 (void)fflush(stderr); 1815 1816 PrintOnError(NULL, NULL); 1817 1818 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1819 Targ_PrintGraph(2); 1820 Trace_Log(MAKEERROR, 0); 1821 exit(2); /* Not 1 so -q can distinguish error */ 1822 } 1823 1824 /* 1825 * Punt -- 1826 * Major exception once jobs are being created. Kills all jobs, prints 1827 * a message and exits. 1828 * 1829 * Results: 1830 * None 1831 * 1832 * Side Effects: 1833 * All children are killed indiscriminately and the program Lib_Exits 1834 */ 1835 /* VARARGS */ 1836 void 1837 Punt(const char *fmt, ...) 1838 { 1839 va_list ap; 1840 1841 va_start(ap, fmt); 1842 (void)fflush(stdout); 1843 (void)fprintf(stderr, "%s: ", progname); 1844 (void)vfprintf(stderr, fmt, ap); 1845 va_end(ap); 1846 (void)fprintf(stderr, "\n"); 1847 (void)fflush(stderr); 1848 1849 PrintOnError(NULL, NULL); 1850 1851 DieHorribly(); 1852 } 1853 1854 /*- 1855 * DieHorribly -- 1856 * Exit without giving a message. 1857 * 1858 * Results: 1859 * None 1860 * 1861 * Side Effects: 1862 * A big one... 1863 */ 1864 void 1865 DieHorribly(void) 1866 { 1867 if (jobsRunning) 1868 Job_AbortAll(); 1869 if (DEBUG(GRAPH2)) 1870 Targ_PrintGraph(2); 1871 Trace_Log(MAKEERROR, 0); 1872 exit(2); /* Not 1, so -q can distinguish error */ 1873 } 1874 1875 /* 1876 * Finish -- 1877 * Called when aborting due to errors in child shell to signal 1878 * abnormal exit. 1879 * 1880 * Results: 1881 * None 1882 * 1883 * Side Effects: 1884 * The program exits 1885 */ 1886 void 1887 Finish(int errors) 1888 /* number of errors encountered in Make_Make */ 1889 { 1890 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1891 } 1892 1893 /* 1894 * eunlink -- 1895 * Remove a file carefully, avoiding directories. 1896 */ 1897 int 1898 eunlink(const char *file) 1899 { 1900 struct stat st; 1901 1902 if (lstat(file, &st) == -1) 1903 return -1; 1904 1905 if (S_ISDIR(st.st_mode)) { 1906 errno = EISDIR; 1907 return -1; 1908 } 1909 return unlink(file); 1910 } 1911 1912 /* 1913 * execError -- 1914 * Print why exec failed, avoiding stdio. 1915 */ 1916 void 1917 execError(const char *af, const char *av) 1918 { 1919 #ifdef USE_IOVEC 1920 int i = 0; 1921 struct iovec iov[8]; 1922 #define IOADD(s) \ 1923 (void)(iov[i].iov_base = UNCONST(s), \ 1924 iov[i].iov_len = strlen(iov[i].iov_base), \ 1925 i++) 1926 #else 1927 #define IOADD(s) (void)write(2, s, strlen(s)) 1928 #endif 1929 1930 IOADD(progname); 1931 IOADD(": "); 1932 IOADD(af); 1933 IOADD("("); 1934 IOADD(av); 1935 IOADD(") failed ("); 1936 IOADD(strerror(errno)); 1937 IOADD(")\n"); 1938 1939 #ifdef USE_IOVEC 1940 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1941 continue; 1942 #endif 1943 } 1944 1945 /* 1946 * usage -- 1947 * exit with usage message 1948 */ 1949 static void 1950 usage(void) 1951 { 1952 char *p; 1953 if ((p = strchr(progname, '[')) != NULL) 1954 *p = '\0'; 1955 1956 (void)fprintf(stderr, 1957 "usage: %s [-BeikNnqrstWwX] \n\ 1958 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1959 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1960 [-V variable] [-v variable] [variable=value] [target ...]\n", 1961 progname); 1962 exit(2); 1963 } 1964 1965 /* 1966 * realpath(3) can get expensive, cache results... 1967 */ 1968 static GNode *cached_realpaths = NULL; 1969 1970 static GNode * 1971 get_cached_realpaths(void) 1972 { 1973 1974 if (!cached_realpaths) { 1975 cached_realpaths = Targ_NewGN("Realpath"); 1976 #ifndef DEBUG_REALPATH_CACHE 1977 cached_realpaths->flags = INTERNAL; 1978 #endif 1979 } 1980 1981 return cached_realpaths; 1982 } 1983 1984 /* purge any relative paths */ 1985 static void 1986 purge_cached_realpaths(void) 1987 { 1988 GNode *cache = get_cached_realpaths(); 1989 Hash_Entry *he, *nhe; 1990 Hash_Search hs; 1991 1992 he = Hash_EnumFirst(&cache->context, &hs); 1993 while (he) { 1994 nhe = Hash_EnumNext(&hs); 1995 if (he->name[0] != '/') { 1996 if (DEBUG(DIR)) 1997 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1998 Hash_DeleteEntry(&cache->context, he); 1999 } 2000 he = nhe; 2001 } 2002 } 2003 2004 char * 2005 cached_realpath(const char *pathname, char *resolved) 2006 { 2007 GNode *cache; 2008 char *rp, *cp; 2009 2010 if (!pathname || !pathname[0]) 2011 return NULL; 2012 2013 cache = get_cached_realpaths(); 2014 2015 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 2016 /* a hit */ 2017 strlcpy(resolved, rp, MAXPATHLEN); 2018 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2019 Var_Set(pathname, rp, cache, 0); 2020 } 2021 free(cp); 2022 return rp ? resolved : NULL; 2023 } 2024 2025 int 2026 PrintAddr(void *a, void *b) 2027 { 2028 printf("%lx ", (unsigned long) a); 2029 return b ? 0 : 0; 2030 } 2031 2032 2033 static int 2034 addErrorCMD(void *cmdp, void *gnp MAKE_ATTR_UNUSED) 2035 { 2036 if (cmdp == NULL) 2037 return 1; /* stop */ 2038 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2039 return 0; 2040 } 2041 2042 void 2043 PrintOnError(GNode *gn, const char *s) 2044 { 2045 static GNode *en = NULL; 2046 char tmp[64]; 2047 char *cp; 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, 0); 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