1 /* $NetBSD: main.c,v 1.331 2020/08/30 19:56:02 rillig Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.331 2020/08/30 19:56:02 rillig Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.331 2020/08/30 19:56:02 rillig Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and optional arguments 103 * for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and arguments for it. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and arguments for it. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/stat.h> 121 #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 <ctype.h> 128 #include <errno.h> 129 #include <signal.h> 130 #include <stdarg.h> 131 #include <stdio.h> 132 #include <stdlib.h> 133 #include <time.h> 134 135 #include "make.h" 136 #include "hash.h" 137 #include "dir.h" 138 #include "job.h" 139 #include "pathnames.h" 140 #include "trace.h" 141 142 #ifdef USE_IOVEC 143 #include <sys/uio.h> 144 #endif 145 146 #ifndef DEFMAXLOCAL 147 #define DEFMAXLOCAL DEFMAXJOBS 148 #endif /* DEFMAXLOCAL */ 149 150 #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 * (for -v and -V) */ 167 int maxJobs; /* -j argument */ 168 static int maxJobTokens; /* -j argument */ 169 Boolean compatMake; /* -B argument */ 170 int debug; /* -d argument */ 171 Boolean debugVflag; /* -dV */ 172 Boolean noExecute; /* -n flag */ 173 Boolean noRecursiveExecute; /* -N flag */ 174 Boolean keepgoing; /* -k flag */ 175 Boolean queryFlag; /* -q flag */ 176 Boolean touchFlag; /* -t flag */ 177 Boolean enterFlag; /* -w flag */ 178 Boolean enterFlagObj; /* -w and objdir != srcdir */ 179 Boolean ignoreErrors; /* -i flag */ 180 Boolean beSilent; /* -s flag */ 181 Boolean oldVars; /* variable substitution style */ 182 Boolean checkEnvFirst; /* -e flag */ 183 Boolean parseWarnFatal; /* -W 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 char *); 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 FILE *debug_file; 203 204 Boolean forceJobs = FALSE; 205 206 /* 207 * On some systems MACHINE is defined as something other than 208 * what we want. 209 */ 210 #ifdef FORCE_MACHINE 211 # undef MACHINE 212 # define MACHINE FORCE_MACHINE 213 #endif 214 215 extern Lst parseIncPath; 216 217 /* 218 * For compatibility with the POSIX version of MAKEFLAGS that includes 219 * all the options with out -, convert flags to -f -l -a -g -s. 220 */ 221 static char * 222 explode(const char *flags) 223 { 224 size_t len; 225 char *nf, *st; 226 const char *f; 227 228 if (flags == NULL) 229 return NULL; 230 231 for (f = flags; *f; f++) 232 if (!isalpha((unsigned char)*f)) 233 break; 234 235 if (*f) 236 return bmake_strdup(flags); 237 238 len = strlen(flags); 239 st = nf = bmake_malloc(len * 3 + 1); 240 while (*flags) { 241 *nf++ = '-'; 242 *nf++ = *flags++; 243 *nf++ = ' '; 244 } 245 *nf = '\0'; 246 return st; 247 } 248 249 static void 250 parse_debug_options(const char *argvalue) 251 { 252 const char *modules; 253 const char *mode; 254 char *fname; 255 int len; 256 257 for (modules = argvalue; *modules; ++modules) { 258 switch (*modules) { 259 case 'A': 260 debug = ~(0|DEBUG_LINT); 261 break; 262 case 'a': 263 debug |= DEBUG_ARCH; 264 break; 265 case 'C': 266 debug |= DEBUG_CWD; 267 break; 268 case 'c': 269 debug |= DEBUG_COND; 270 break; 271 case 'd': 272 debug |= DEBUG_DIR; 273 break; 274 case 'e': 275 debug |= DEBUG_ERROR; 276 break; 277 case 'f': 278 debug |= DEBUG_FOR; 279 break; 280 case 'g': 281 if (modules[1] == '1') { 282 debug |= DEBUG_GRAPH1; 283 ++modules; 284 } 285 else if (modules[1] == '2') { 286 debug |= DEBUG_GRAPH2; 287 ++modules; 288 } 289 else if (modules[1] == '3') { 290 debug |= DEBUG_GRAPH3; 291 ++modules; 292 } 293 break; 294 case 'h': 295 debug |= DEBUG_HASH; 296 break; 297 case 'j': 298 debug |= DEBUG_JOB; 299 break; 300 case 'L': 301 debug |= DEBUG_LINT; 302 break; 303 case 'l': 304 debug |= DEBUG_LOUD; 305 break; 306 case 'M': 307 debug |= DEBUG_META; 308 break; 309 case 'm': 310 debug |= DEBUG_MAKE; 311 break; 312 case 'n': 313 debug |= DEBUG_SCRIPT; 314 break; 315 case 'p': 316 debug |= DEBUG_PARSE; 317 break; 318 case 's': 319 debug |= DEBUG_SUFF; 320 break; 321 case 't': 322 debug |= DEBUG_TARG; 323 break; 324 case 'V': 325 debugVflag = TRUE; 326 break; 327 case 'v': 328 debug |= DEBUG_VAR; 329 break; 330 case 'x': 331 debug |= DEBUG_SHELL; 332 break; 333 case 'F': 334 if (debug_file != stdout && debug_file != stderr) 335 fclose(debug_file); 336 if (*++modules == '+') { 337 modules++; 338 mode = "a"; 339 } else 340 mode = "w"; 341 if (strcmp(modules, "stdout") == 0) { 342 debug_file = stdout; 343 goto debug_setbuf; 344 } 345 if (strcmp(modules, "stderr") == 0) { 346 debug_file = stderr; 347 goto debug_setbuf; 348 } 349 len = strlen(modules); 350 fname = bmake_malloc(len + 20); 351 memcpy(fname, modules, len + 1); 352 /* Let the filename be modified by the pid */ 353 if (strcmp(fname + len - 3, ".%d") == 0) 354 snprintf(fname + len - 2, 20, "%d", getpid()); 355 debug_file = fopen(fname, mode); 356 if (!debug_file) { 357 fprintf(stderr, "Cannot open debug file %s\n", 358 fname); 359 usage(); 360 } 361 free(fname); 362 goto debug_setbuf; 363 default: 364 (void)fprintf(stderr, 365 "%s: illegal argument to d option -- %c\n", 366 progname, *modules); 367 usage(); 368 } 369 } 370 debug_setbuf: 371 /* 372 * Make the debug_file unbuffered, and make 373 * stdout line buffered (unless debugfile == stdout). 374 */ 375 setvbuf(debug_file, NULL, _IONBF, 0); 376 if (debug_file != stdout) { 377 setvbuf(stdout, NULL, _IOLBF, 0); 378 } 379 } 380 381 /* 382 * does path contain any relative components 383 */ 384 static Boolean 385 is_relpath(const char *path) 386 { 387 const char *cp; 388 389 if (path[0] != '/') 390 return TRUE; 391 cp = path; 392 while ((cp = strstr(cp, "/.")) != NULL) { 393 cp += 2; 394 if (cp[0] == '/' || cp[0] == '\0') 395 return TRUE; 396 else if (cp[0] == '.') { 397 if (cp[1] == '/' || cp[1] == '\0') 398 return TRUE; 399 } 400 } 401 return FALSE; 402 } 403 404 /*- 405 * MainParseArgs -- 406 * Parse a given argument vector. Called from main() and from 407 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 408 * 409 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 410 * 411 * Results: 412 * None 413 * 414 * Side Effects: 415 * Various global and local flags will be set depending on the flags 416 * given 417 */ 418 static void 419 MainParseArgs(int argc, char **argv) 420 { 421 char *p; 422 char c = '?'; 423 int arginc; 424 char *argvalue; 425 const char *getopt_def; 426 struct stat sa, sb; 427 char *optscan; 428 Boolean inOption, dashDash = FALSE; 429 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 430 431 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w" 432 /* Can't actually use getopt(3) because rescanning is not portable */ 433 434 getopt_def = OPTFLAGS; 435 rearg: 436 inOption = FALSE; 437 optscan = NULL; 438 while(argc > 1) { 439 char *getopt_spec; 440 if(!inOption) 441 optscan = argv[1]; 442 c = *optscan++; 443 arginc = 0; 444 if(inOption) { 445 if(c == '\0') { 446 ++argv; 447 --argc; 448 inOption = FALSE; 449 continue; 450 } 451 } else { 452 if (c != '-' || dashDash) 453 break; 454 inOption = TRUE; 455 c = *optscan++; 456 } 457 /* '-' found at some earlier point */ 458 getopt_spec = strchr(getopt_def, c); 459 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 460 /* -<something> found, and <something> should have an arg */ 461 inOption = FALSE; 462 arginc = 1; 463 argvalue = optscan; 464 if(*argvalue == '\0') { 465 if (argc < 3) 466 goto noarg; 467 argvalue = argv[2]; 468 arginc = 2; 469 } 470 } else { 471 argvalue = NULL; 472 } 473 switch(c) { 474 case '\0': 475 arginc = 1; 476 inOption = FALSE; 477 break; 478 case 'B': 479 compatMake = TRUE; 480 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 481 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 482 break; 483 case 'C': 484 if (chdir(argvalue) == -1) { 485 (void)fprintf(stderr, 486 "%s: chdir %s: %s\n", 487 progname, argvalue, 488 strerror(errno)); 489 exit(1); 490 } 491 if (getcwd(curdir, MAXPATHLEN) == NULL) { 492 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 493 exit(2); 494 } 495 if (!is_relpath(argvalue) && 496 stat(argvalue, &sa) != -1 && 497 stat(curdir, &sb) != -1 && 498 sa.st_ino == sb.st_ino && 499 sa.st_dev == sb.st_dev) 500 strncpy(curdir, argvalue, MAXPATHLEN); 501 ignorePWD = TRUE; 502 break; 503 case 'D': 504 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 505 Var_Set(argvalue, "1", VAR_GLOBAL); 506 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 507 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 508 break; 509 case 'I': 510 if (argvalue == NULL) goto noarg; 511 Parse_AddIncludeDir(argvalue); 512 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 513 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 514 break; 515 case 'J': 516 if (argvalue == NULL) goto noarg; 517 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 518 (void)fprintf(stderr, 519 "%s: internal error -- J option malformed (%s)\n", 520 progname, argvalue); 521 usage(); 522 } 523 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 524 (fcntl(jp_1, F_GETFD, 0) < 0)) { 525 #if 0 526 (void)fprintf(stderr, 527 "%s: ###### warning -- J descriptors were closed!\n", 528 progname); 529 exit(2); 530 #endif 531 jp_0 = -1; 532 jp_1 = -1; 533 compatMake = TRUE; 534 } else { 535 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 536 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 537 } 538 break; 539 case 'N': 540 noExecute = TRUE; 541 noRecursiveExecute = TRUE; 542 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 543 break; 544 case 'S': 545 keepgoing = FALSE; 546 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 547 break; 548 case 'T': 549 if (argvalue == NULL) goto noarg; 550 tracefile = bmake_strdup(argvalue); 551 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 552 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 553 break; 554 case 'V': 555 case 'v': 556 if (argvalue == NULL) goto noarg; 557 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 558 Lst_Append(variables, argvalue); 559 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 560 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 561 break; 562 case 'W': 563 parseWarnFatal = TRUE; 564 break; 565 case 'X': 566 varNoExportEnv = TRUE; 567 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 568 break; 569 case 'd': 570 if (argvalue == NULL) goto noarg; 571 /* If '-d-opts' don't pass to children */ 572 if (argvalue[0] == '-') 573 argvalue++; 574 else { 575 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 576 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 577 } 578 parse_debug_options(argvalue); 579 break; 580 case 'e': 581 checkEnvFirst = TRUE; 582 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 583 break; 584 case 'f': 585 if (argvalue == NULL) goto noarg; 586 Lst_Append(makefiles, argvalue); 587 break; 588 case 'i': 589 ignoreErrors = TRUE; 590 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 591 break; 592 case 'j': 593 if (argvalue == NULL) goto noarg; 594 forceJobs = TRUE; 595 maxJobs = strtol(argvalue, &p, 0); 596 if (*p != '\0' || maxJobs < 1) { 597 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 598 progname); 599 exit(1); 600 } 601 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 602 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 603 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 604 maxJobTokens = maxJobs; 605 break; 606 case 'k': 607 keepgoing = TRUE; 608 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 609 break; 610 case 'm': 611 if (argvalue == NULL) goto noarg; 612 /* look for magic parent directory search string */ 613 if (strncmp(".../", argvalue, 4) == 0) { 614 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 615 found_path, sizeof(found_path))) 616 break; /* nothing doing */ 617 (void)Dir_AddDir(sysIncPath, found_path); 618 } else { 619 (void)Dir_AddDir(sysIncPath, argvalue); 620 } 621 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 622 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 623 break; 624 case 'n': 625 noExecute = TRUE; 626 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 627 break; 628 case 'q': 629 queryFlag = TRUE; 630 /* Kind of nonsensical, wot? */ 631 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 632 break; 633 case 'r': 634 noBuiltins = TRUE; 635 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 636 break; 637 case 's': 638 beSilent = TRUE; 639 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 640 break; 641 case 't': 642 touchFlag = TRUE; 643 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 644 break; 645 case 'w': 646 enterFlag = TRUE; 647 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 648 break; 649 case '-': 650 dashDash = TRUE; 651 break; 652 default: 653 case '?': 654 #ifndef MAKE_NATIVE 655 fprintf(stderr, "getopt(%s) -> %d (%c)\n", 656 OPTFLAGS, c, c); 657 #endif 658 usage(); 659 } 660 argv += arginc; 661 argc -= arginc; 662 } 663 664 oldVars = TRUE; 665 666 /* 667 * See if the rest of the arguments are variable assignments and 668 * perform them if so. Else take them to be targets and stuff them 669 * on the end of the "create" list. 670 */ 671 for (; argc > 1; ++argv, --argc) 672 if (Parse_IsVar(argv[1])) { 673 Parse_DoVar(argv[1], VAR_CMD); 674 } else { 675 if (!*argv[1]) 676 Punt("illegal (null) argument."); 677 if (*argv[1] == '-' && !dashDash) 678 goto rearg; 679 Lst_Append(create, bmake_strdup(argv[1])); 680 } 681 682 return; 683 noarg: 684 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 685 progname, c); 686 usage(); 687 } 688 689 /*- 690 * Main_ParseArgLine -- 691 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 692 * is encountered and by main() when reading the .MAKEFLAGS envariable. 693 * Takes a line of arguments and breaks it into its 694 * component words and passes those words and the number of them to the 695 * MainParseArgs function. 696 * The line should have all its leading whitespace removed. 697 * 698 * Input: 699 * line Line to fracture 700 * 701 * Results: 702 * None 703 * 704 * Side Effects: 705 * Only those that come from the various arguments. 706 */ 707 void 708 Main_ParseArgLine(const char *line) 709 { 710 Words words; 711 char *p1; 712 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 713 char *buf; 714 715 if (line == NULL) 716 return; 717 for (; *line == ' '; ++line) 718 continue; 719 if (!*line) 720 return; 721 722 #ifndef POSIX 723 { 724 /* 725 * $MAKE may simply be naming the make(1) binary 726 */ 727 char *cp; 728 729 if (!(cp = strrchr(line, '/'))) 730 cp = line; 731 if ((cp = strstr(cp, "make")) && 732 strcmp(cp, "make") == 0) 733 return; 734 } 735 #endif 736 buf = str_concat3(argv0, " ", line); 737 free(p1); 738 739 words = Str_Words(buf, TRUE); 740 if (words.words == NULL) { 741 Error("Unterminated quoted string [%s]", buf); 742 free(buf); 743 return; 744 } 745 free(buf); 746 MainParseArgs((int)words.len, words.words); 747 748 Words_Free(words); 749 } 750 751 Boolean 752 Main_SetObjdir(const char *fmt, ...) 753 { 754 struct stat sb; 755 char *path; 756 char buf[MAXPATHLEN + 1]; 757 char buf2[MAXPATHLEN + 1]; 758 Boolean rc = FALSE; 759 va_list ap; 760 761 va_start(ap, fmt); 762 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 763 va_end(ap); 764 765 if (path[0] != '/') { 766 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 767 path = buf2; 768 } 769 770 /* look for the directory and try to chdir there */ 771 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 772 if (chdir(path)) { 773 (void)fprintf(stderr, "make warning: %s: %s.\n", 774 path, strerror(errno)); 775 } else { 776 snprintf(objdir, sizeof objdir, "%s", path); 777 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 778 setenv("PWD", objdir, 1); 779 Dir_InitDot(); 780 purge_cached_realpaths(); 781 rc = TRUE; 782 if (enterFlag && strcmp(objdir, curdir) != 0) 783 enterFlagObj = TRUE; 784 } 785 } 786 787 return rc; 788 } 789 790 static Boolean 791 Main_SetVarObjdir(const char *var, const char *suffix) 792 { 793 char *path_freeIt; 794 const char *path = Var_Value(var, VAR_CMD, &path_freeIt); 795 const char *xpath; 796 char *xpath_freeIt; 797 798 if (path == NULL || path[0] == '\0') { 799 bmake_free(path_freeIt); 800 return FALSE; 801 } 802 803 /* expand variable substitutions */ 804 xpath = path; 805 xpath_freeIt = NULL; 806 if (strchr(path, '$') != 0) 807 xpath = xpath_freeIt = Var_Subst(path, VAR_GLOBAL, 808 VARE_WANTRES); 809 810 (void)Main_SetObjdir("%s%s", xpath, suffix); 811 812 bmake_free(xpath_freeIt); 813 bmake_free(path_freeIt); 814 return TRUE; 815 } 816 817 /* Read and parse the makefile. 818 * Return TRUE if reading the makefile succeeded, for Lst_Find. */ 819 static Boolean 820 ReadMakefileSucceeded(const void *fname, const void *unused) 821 { 822 return ReadMakefile(fname) == 0; 823 } 824 825 /* Read and parse the makefile. 826 * Return TRUE if reading the makefile failed, for Lst_Find. */ 827 static Boolean 828 ReadMakefileFailed(const void *fname, const void *unused) 829 { 830 return ReadMakefile(fname) != 0; 831 } 832 833 int 834 str2Lst_Append(Lst lp, char *str, const char *sep) 835 { 836 char *cp; 837 int n; 838 839 if (!sep) 840 sep = " \t"; 841 842 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 843 Lst_Append(lp, cp); 844 n++; 845 } 846 return n; 847 } 848 849 #ifdef SIGINFO 850 /*ARGSUSED*/ 851 static void 852 siginfo(int signo MAKE_ATTR_UNUSED) 853 { 854 char dir[MAXPATHLEN]; 855 char str[2 * MAXPATHLEN]; 856 int len; 857 if (getcwd(dir, sizeof(dir)) == NULL) 858 return; 859 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 860 if (len > 0) 861 (void)write(STDERR_FILENO, str, (size_t)len); 862 } 863 #endif 864 865 /* 866 * Allow makefiles some control over the mode we run in. 867 */ 868 void 869 MakeMode(const char *mode) 870 { 871 char *mode_freeIt = NULL; 872 873 if (mode == NULL) 874 mode = mode_freeIt = Var_Subst("${" MAKE_MODE ":tl}", 875 VAR_GLOBAL, VARE_WANTRES); 876 877 if (mode[0] != '\0') { 878 if (strstr(mode, "compat")) { 879 compatMake = TRUE; 880 forceJobs = FALSE; 881 } 882 #if USE_META 883 if (strstr(mode, "meta")) 884 meta_mode_init(mode); 885 #endif 886 } 887 888 free(mode_freeIt); 889 } 890 891 static void 892 doPrintVars(void) 893 { 894 LstNode ln; 895 Boolean expandVars; 896 897 if (printVars == EXPAND_VARS) 898 expandVars = TRUE; 899 else if (debugVflag) 900 expandVars = FALSE; 901 else 902 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 903 904 for (ln = Lst_First(variables); ln != NULL; ln = LstNode_Next(ln)) { 905 char *var = LstNode_Datum(ln); 906 const char *value; 907 char *p1; 908 909 if (strchr(var, '$')) { 910 value = p1 = Var_Subst(var, VAR_GLOBAL, VARE_WANTRES); 911 } else if (expandVars) { 912 char tmp[128]; 913 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 914 915 if (len >= (int)sizeof(tmp)) 916 Fatal("%s: variable name too big: %s", 917 progname, var); 918 value = p1 = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 919 } else { 920 value = Var_Value(var, VAR_GLOBAL, &p1); 921 } 922 printf("%s\n", value ? value : ""); 923 bmake_free(p1); 924 } 925 } 926 927 static Boolean 928 runTargets(void) 929 { 930 Lst targs; /* target nodes to create -- passed to Make_Init */ 931 Boolean outOfDate; /* FALSE if all targets up to date */ 932 933 /* 934 * Have now read the entire graph and need to make a list of 935 * targets to create. If none was given on the command line, 936 * we consult the parsing module to find the main target(s) 937 * to create. 938 */ 939 if (Lst_IsEmpty(create)) 940 targs = Parse_MainName(); 941 else 942 targs = Targ_FindList(create, TARG_CREATE); 943 944 if (!compatMake) { 945 /* 946 * Initialize job module before traversing the graph 947 * now that any .BEGIN and .END targets have been read. 948 * This is done only if the -q flag wasn't given 949 * (to prevent the .BEGIN from being executed should 950 * it exist). 951 */ 952 if (!queryFlag) { 953 Job_Init(); 954 jobsRunning = TRUE; 955 } 956 957 /* Traverse the graph, checking on all the targets */ 958 outOfDate = Make_Run(targs); 959 } else { 960 /* 961 * Compat_Init will take care of creating all the 962 * targets as well as initializing the module. 963 */ 964 Compat_Run(targs); 965 outOfDate = FALSE; 966 } 967 Lst_Free(targs); 968 return outOfDate; 969 } 970 971 /*- 972 * main -- 973 * The main function, for obvious reasons. Initializes variables 974 * and a few modules, then parses the arguments give it in the 975 * environment and on the command line. Reads the system makefile 976 * followed by either Makefile, makefile or the file given by the 977 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 978 * flags it has received by then uses either the Make or the Compat 979 * module to create the initial list of targets. 980 * 981 * Results: 982 * If -q was given, exits -1 if anything was out-of-date. Else it exits 983 * 0. 984 * 985 * Side Effects: 986 * The program exits when done. Targets are created. etc. etc. etc. 987 */ 988 int 989 main(int argc, char **argv) 990 { 991 Boolean outOfDate; /* FALSE if all targets up to date */ 992 struct stat sb, sa; 993 char *p1, *path; 994 char mdpath[MAXPATHLEN]; 995 #ifdef FORCE_MACHINE 996 const char *machine = FORCE_MACHINE; 997 #else 998 const char *machine = getenv("MACHINE"); 999 #endif 1000 const char *machine_arch = getenv("MACHINE_ARCH"); 1001 char *syspath = getenv("MAKESYSPATH"); 1002 Lst sysMkPath; /* Path of sys.mk */ 1003 char *cp = NULL, *start; 1004 /* avoid faults on read-only strings */ 1005 static char defsyspath[] = _PATH_DEFSYSPATH; 1006 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 1007 struct timeval rightnow; /* to initialize random seed */ 1008 struct utsname utsname; 1009 1010 /* default to writing debug to stderr */ 1011 debug_file = stderr; 1012 1013 #ifdef SIGINFO 1014 (void)bmake_signal(SIGINFO, siginfo); 1015 #endif 1016 /* 1017 * Set the seed to produce a different random sequence 1018 * on each program execution. 1019 */ 1020 gettimeofday(&rightnow, NULL); 1021 srandom(rightnow.tv_sec + rightnow.tv_usec); 1022 1023 if ((progname = strrchr(argv[0], '/')) != NULL) 1024 progname++; 1025 else 1026 progname = argv[0]; 1027 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1028 /* 1029 * get rid of resource limit on file descriptors 1030 */ 1031 { 1032 struct rlimit rl; 1033 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1034 rl.rlim_cur != rl.rlim_max) { 1035 rl.rlim_cur = rl.rlim_max; 1036 (void)setrlimit(RLIMIT_NOFILE, &rl); 1037 } 1038 } 1039 #endif 1040 1041 if (uname(&utsname) == -1) { 1042 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1043 strerror(errno)); 1044 exit(2); 1045 } 1046 1047 /* 1048 * Get the name of this type of MACHINE from utsname 1049 * so we can share an executable for similar machines. 1050 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1051 * 1052 * Note that both MACHINE and MACHINE_ARCH are decided at 1053 * run-time. 1054 */ 1055 if (!machine) { 1056 #ifdef MAKE_NATIVE 1057 machine = utsname.machine; 1058 #else 1059 #ifdef MAKE_MACHINE 1060 machine = MAKE_MACHINE; 1061 #else 1062 machine = "unknown"; 1063 #endif 1064 #endif 1065 } 1066 1067 if (!machine_arch) { 1068 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH) 1069 static char machine_arch_buf[sizeof(utsname.machine)]; 1070 int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1071 size_t len = sizeof(machine_arch_buf); 1072 1073 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1074 &len, NULL, 0) < 0) { 1075 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1076 strerror(errno)); 1077 exit(2); 1078 } 1079 1080 machine_arch = machine_arch_buf; 1081 #else 1082 #ifndef MACHINE_ARCH 1083 #ifdef MAKE_MACHINE_ARCH 1084 machine_arch = MAKE_MACHINE_ARCH; 1085 #else 1086 machine_arch = "unknown"; 1087 #endif 1088 #else 1089 machine_arch = MACHINE_ARCH; 1090 #endif 1091 #endif 1092 } 1093 1094 myPid = getpid(); /* remember this for vFork() */ 1095 1096 /* 1097 * Just in case MAKEOBJDIR wants us to do something tricky. 1098 */ 1099 Var_Init(); /* Initialize the lists of variables for 1100 * parsing arguments */ 1101 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1102 Var_Set("MACHINE", machine, VAR_GLOBAL); 1103 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1104 #ifdef MAKE_VERSION 1105 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1106 #endif 1107 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1108 /* 1109 * This is the traditional preference for makefiles. 1110 */ 1111 #ifndef MAKEFILE_PREFERENCE_LIST 1112 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1113 #endif 1114 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1115 VAR_GLOBAL); 1116 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1117 1118 create = Lst_Init(); 1119 makefiles = Lst_Init(); 1120 printVars = 0; 1121 debugVflag = FALSE; 1122 variables = Lst_Init(); 1123 beSilent = FALSE; /* Print commands as executed */ 1124 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1125 noExecute = FALSE; /* Execute all commands */ 1126 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1127 keepgoing = FALSE; /* Stop on error */ 1128 allPrecious = FALSE; /* Remove targets when interrupted */ 1129 deleteOnError = FALSE; /* Historical default behavior */ 1130 queryFlag = FALSE; /* This is not just a check-run */ 1131 noBuiltins = FALSE; /* Read the built-in rules */ 1132 touchFlag = FALSE; /* Actually update targets */ 1133 debug = 0; /* No debug verbosity, please. */ 1134 jobsRunning = FALSE; 1135 1136 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1137 maxJobTokens = maxJobs; 1138 compatMake = FALSE; /* No compat mode */ 1139 ignorePWD = FALSE; 1140 1141 /* 1142 * Initialize the parsing, directory and variable modules to prepare 1143 * for the reading of inclusion paths and variable settings on the 1144 * command line 1145 */ 1146 1147 /* 1148 * Initialize various variables. 1149 * MAKE also gets this name, for compatibility 1150 * .MAKEFLAGS gets set to the empty string just in case. 1151 * MFLAGS also gets initialized empty, for compatibility. 1152 */ 1153 Parse_Init(); 1154 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1155 /* 1156 * Leave alone if it is an absolute path, or if it does 1157 * not contain a '/' in which case we need to find it in 1158 * the path, like execvp(3) and the shells do. 1159 */ 1160 p1 = argv[0]; 1161 } else { 1162 /* 1163 * A relative path, canonicalize it. 1164 */ 1165 p1 = cached_realpath(argv[0], mdpath); 1166 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1167 p1 = argv[0]; /* realpath failed */ 1168 } 1169 } 1170 Var_Set("MAKE", p1, VAR_GLOBAL); 1171 Var_Set(".MAKE", p1, VAR_GLOBAL); 1172 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1173 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1174 Var_Set("MFLAGS", "", VAR_GLOBAL); 1175 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1176 /* some makefiles need to know this */ 1177 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1178 1179 /* 1180 * Set some other useful macros 1181 */ 1182 { 1183 char tmp[64], *ep; 1184 1185 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1186 if (makelevel < 0) 1187 makelevel = 0; 1188 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1189 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1190 snprintf(tmp, sizeof(tmp), "%u", myPid); 1191 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1192 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1193 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1194 } 1195 if (makelevel > 0) { 1196 char pn[1024]; 1197 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1198 progname = bmake_strdup(pn); 1199 } 1200 1201 #ifdef USE_META 1202 meta_init(); 1203 #endif 1204 Dir_Init(); 1205 1206 /* 1207 * First snag any flags out of the MAKE environment variable. 1208 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1209 * in a different format). 1210 */ 1211 #ifdef POSIX 1212 p1 = explode(getenv("MAKEFLAGS")); 1213 Main_ParseArgLine(p1); 1214 free(p1); 1215 #else 1216 Main_ParseArgLine(getenv("MAKE")); 1217 #endif 1218 1219 /* 1220 * Find where we are (now). 1221 * We take care of PWD for the automounter below... 1222 */ 1223 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1224 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1225 progname, strerror(errno)); 1226 exit(2); 1227 } 1228 1229 MainParseArgs(argc, argv); 1230 1231 if (enterFlag) 1232 printf("%s: Entering directory `%s'\n", progname, curdir); 1233 1234 /* 1235 * Verify that cwd is sane. 1236 */ 1237 if (stat(curdir, &sa) == -1) { 1238 (void)fprintf(stderr, "%s: %s: %s.\n", 1239 progname, curdir, strerror(errno)); 1240 exit(2); 1241 } 1242 1243 /* 1244 * All this code is so that we know where we are when we start up 1245 * on a different machine with pmake. 1246 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1247 * since the value of curdir can vary depending on how we got 1248 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1249 * or via subdir.mk in which case its likely a shell which does 1250 * not provide it. 1251 * So, to stop it breaking this case only, we ignore PWD if 1252 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1253 */ 1254 #ifndef NO_PWD_OVERRIDE 1255 if (!ignorePWD) { 1256 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1257 1258 if ((pwd = getenv("PWD")) != NULL && 1259 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1260 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1261 VAR_CMD, &ptmp2); 1262 1263 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1264 if (stat(pwd, &sb) == 0 && 1265 sa.st_ino == sb.st_ino && 1266 sa.st_dev == sb.st_dev) 1267 (void)strncpy(curdir, pwd, MAXPATHLEN); 1268 } 1269 } 1270 bmake_free(ptmp1); 1271 bmake_free(ptmp2); 1272 } 1273 #endif 1274 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1275 1276 /* 1277 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1278 * MAKEOBJDIR is set in the environment, try only that value 1279 * and fall back to .CURDIR if it does not exist. 1280 * 1281 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1282 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1283 * of these paths exist, just use .CURDIR. 1284 */ 1285 Dir_InitDir(curdir); 1286 (void)Main_SetObjdir("%s", curdir); 1287 1288 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1289 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1290 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1291 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1292 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1293 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1294 1295 /* 1296 * Initialize archive, target and suffix modules in preparation for 1297 * parsing the makefile(s) 1298 */ 1299 Arch_Init(); 1300 Targ_Init(); 1301 Suff_Init(); 1302 Trace_Init(tracefile); 1303 1304 DEFAULT = NULL; 1305 (void)time(&now); 1306 1307 Trace_Log(MAKESTART, NULL); 1308 1309 /* 1310 * Set up the .TARGETS variable to contain the list of targets to be 1311 * created. If none specified, make the variable empty -- the parser 1312 * will fill the thing in with the default or .MAIN target. 1313 */ 1314 if (!Lst_IsEmpty(create)) { 1315 LstNode ln; 1316 1317 for (ln = Lst_First(create); ln != NULL; ln = LstNode_Next(ln)) { 1318 char *name = LstNode_Datum(ln); 1319 Var_Append(".TARGETS", name, VAR_GLOBAL); 1320 } 1321 } else 1322 Var_Set(".TARGETS", "", VAR_GLOBAL); 1323 1324 1325 /* 1326 * If no user-supplied system path was given (through the -m option) 1327 * add the directories from the DEFSYSPATH (more than one may be given 1328 * as dir1:...:dirn) to the system include path. 1329 */ 1330 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1331 if (syspath == NULL || syspath[0] == '\0') 1332 syspath = defsyspath; 1333 else 1334 syspath = bmake_strdup(syspath); 1335 1336 for (start = syspath; *start != '\0'; start = cp) { 1337 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1338 continue; 1339 if (*cp == ':') { 1340 *cp++ = '\0'; 1341 } 1342 /* look for magic parent directory search string */ 1343 if (strncmp(".../", start, 4) != 0) { 1344 (void)Dir_AddDir(defIncPath, start); 1345 } else { 1346 if (Dir_FindHereOrAbove(curdir, start+4, 1347 found_path, sizeof(found_path))) { 1348 (void)Dir_AddDir(defIncPath, found_path); 1349 } 1350 } 1351 } 1352 if (syspath != defsyspath) 1353 free(syspath); 1354 1355 /* 1356 * Read in the built-in rules first, followed by the specified 1357 * makefiles, or the default makefile and Makefile, in that order, 1358 * if no makefiles were given on the command line. 1359 */ 1360 if (!noBuiltins) { 1361 LstNode ln; 1362 1363 sysMkPath = Lst_Init(); 1364 Dir_Expand(_PATH_DEFSYSMK, 1365 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1366 sysMkPath); 1367 if (Lst_IsEmpty(sysMkPath)) 1368 Fatal("%s: no system rules (%s).", progname, 1369 _PATH_DEFSYSMK); 1370 ln = Lst_Find(sysMkPath, ReadMakefileSucceeded, NULL); 1371 if (ln == NULL) 1372 Fatal("%s: cannot open %s.", progname, 1373 (char *)LstNode_Datum(Lst_First(sysMkPath))); 1374 } 1375 1376 if (!Lst_IsEmpty(makefiles)) { 1377 LstNode ln; 1378 1379 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1380 if (ln != NULL) 1381 Fatal("%s: cannot open %s.", progname, 1382 (char *)LstNode_Datum(ln)); 1383 } else { 1384 p1 = Var_Subst("${" MAKEFILE_PREFERENCE "}", 1385 VAR_CMD, VARE_WANTRES); 1386 (void)str2Lst_Append(makefiles, p1, NULL); 1387 (void)Lst_Find(makefiles, ReadMakefileSucceeded, NULL); 1388 free(p1); 1389 } 1390 1391 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1392 if (!noBuiltins || !printVars) { 1393 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE:T}", 1394 VAR_CMD, VARE_WANTRES); 1395 doing_depend = TRUE; 1396 (void)ReadMakefile(makeDependfile); 1397 doing_depend = FALSE; 1398 } 1399 1400 if (enterFlagObj) 1401 printf("%s: Entering directory `%s'\n", progname, objdir); 1402 1403 MakeMode(NULL); 1404 1405 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1406 bmake_free(p1); 1407 1408 if (!forceJobs && !compatMake && 1409 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1410 char *value; 1411 int n; 1412 1413 value = Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES); 1414 n = strtol(value, NULL, 0); 1415 if (n < 1) { 1416 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1417 progname); 1418 exit(1); 1419 } 1420 if (n != maxJobs) { 1421 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1422 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1423 } 1424 maxJobs = n; 1425 maxJobTokens = maxJobs; 1426 forceJobs = TRUE; 1427 free(value); 1428 } 1429 1430 /* 1431 * Be compatible if user did not specify -j and did not explicitly 1432 * turned compatibility on 1433 */ 1434 if (!compatMake && !forceJobs) { 1435 compatMake = TRUE; 1436 } 1437 1438 if (!compatMake) 1439 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1440 if (DEBUG(JOB)) 1441 fprintf(debug_file, 1442 "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1443 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1444 1445 if (!printVars) 1446 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1447 1448 1449 /* 1450 * For compatibility, look at the directories in the VPATH variable 1451 * and add them to the search path, if the variable is defined. The 1452 * variable's value is in the same format as the PATH envariable, i.e. 1453 * <directory>:<directory>:<directory>... 1454 */ 1455 if (Var_Exists("VPATH", VAR_CMD)) { 1456 char *vpath, savec; 1457 /* 1458 * GCC stores string constants in read-only memory, but 1459 * Var_Subst will want to write this thing, so store it 1460 * in an array 1461 */ 1462 static char VPATH[] = "${VPATH}"; 1463 1464 vpath = Var_Subst(VPATH, VAR_CMD, VARE_WANTRES); 1465 path = vpath; 1466 do { 1467 /* skip to end of directory */ 1468 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1469 continue; 1470 /* Save terminator character so know when to stop */ 1471 savec = *cp; 1472 *cp = '\0'; 1473 /* Add directory to search path */ 1474 (void)Dir_AddDir(dirSearchPath, path); 1475 *cp = savec; 1476 path = cp + 1; 1477 } while (savec == ':'); 1478 free(vpath); 1479 } 1480 1481 /* 1482 * Now that all search paths have been read for suffixes et al, it's 1483 * time to add the default search path to their lists... 1484 */ 1485 Suff_DoPaths(); 1486 1487 /* 1488 * Propagate attributes through :: dependency lists. 1489 */ 1490 Targ_Propagate(); 1491 1492 /* print the initial graph, if the user requested it */ 1493 if (DEBUG(GRAPH1)) 1494 Targ_PrintGraph(1); 1495 1496 /* print the values of any variables requested by the user */ 1497 if (printVars) { 1498 doPrintVars(); 1499 outOfDate = FALSE; 1500 } else { 1501 outOfDate = runTargets(); 1502 } 1503 1504 #ifdef CLEANUP 1505 Lst_Free(variables); 1506 Lst_Free(makefiles); 1507 Lst_Destroy(create, free); 1508 #endif 1509 1510 /* print the graph now it's been processed if the user requested it */ 1511 if (DEBUG(GRAPH2)) 1512 Targ_PrintGraph(2); 1513 1514 Trace_Log(MAKEEND, 0); 1515 1516 if (enterFlagObj) 1517 printf("%s: Leaving directory `%s'\n", progname, objdir); 1518 if (enterFlag) 1519 printf("%s: Leaving directory `%s'\n", progname, curdir); 1520 1521 #ifdef USE_META 1522 meta_finish(); 1523 #endif 1524 Suff_End(); 1525 Targ_End(); 1526 Arch_End(); 1527 Var_End(); 1528 Parse_End(); 1529 Dir_End(); 1530 Job_End(); 1531 Trace_End(); 1532 1533 return outOfDate ? 1 : 0; 1534 } 1535 1536 /* Open and parse the given makefile, with all its side effects. 1537 * 1538 * Results: 1539 * 0 if ok. -1 if couldn't open file. 1540 */ 1541 static int 1542 ReadMakefile(const char *fname) 1543 { 1544 int fd; 1545 char *name, *path = NULL; 1546 1547 if (!strcmp(fname, "-")) { 1548 Parse_File(NULL /*stdin*/, -1); 1549 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1550 } else { 1551 /* if we've chdir'd, rebuild the path name */ 1552 if (strcmp(curdir, objdir) && *fname != '/') { 1553 path = str_concat3(curdir, "/", fname); 1554 fd = open(path, O_RDONLY); 1555 if (fd != -1) { 1556 fname = path; 1557 goto found; 1558 } 1559 free(path); 1560 1561 /* If curdir failed, try objdir (ala .depend) */ 1562 path = str_concat3(objdir, "/", fname); 1563 fd = open(path, O_RDONLY); 1564 if (fd != -1) { 1565 fname = path; 1566 goto found; 1567 } 1568 } else { 1569 fd = open(fname, O_RDONLY); 1570 if (fd != -1) 1571 goto found; 1572 } 1573 /* look in -I and system include directories. */ 1574 name = Dir_FindFile(fname, parseIncPath); 1575 if (!name) 1576 name = Dir_FindFile(fname, 1577 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1578 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1579 free(name); 1580 free(path); 1581 return -1; 1582 } 1583 fname = name; 1584 /* 1585 * set the MAKEFILE variable desired by System V fans -- the 1586 * placement of the setting here means it gets set to the last 1587 * makefile specified, as it is set by SysV make. 1588 */ 1589 found: 1590 if (!doing_depend) 1591 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1592 Parse_File(fname, fd); 1593 } 1594 free(path); 1595 return 0; 1596 } 1597 1598 1599 1600 /*- 1601 * Cmd_Exec -- 1602 * Execute the command in cmd, and return the output of that command 1603 * in a string. In the output, newlines are replaced with spaces. 1604 * 1605 * Results: 1606 * A string containing the output of the command, or the empty string. 1607 * *errfmt returns a format string describing the command failure, 1608 * if any, using a single %s conversion specification. 1609 * 1610 * Side Effects: 1611 * The string must be freed by the caller. 1612 */ 1613 char * 1614 Cmd_Exec(const char *cmd, const char **errfmt) 1615 { 1616 const char *args[4]; /* Args for invoking the shell */ 1617 int fds[2]; /* Pipe streams */ 1618 int cpid; /* Child PID */ 1619 int pid; /* PID from wait() */ 1620 WAIT_T status; /* command exit status */ 1621 Buffer buf; /* buffer to store the result */ 1622 ssize_t bytes_read; 1623 char *res; /* result */ 1624 size_t res_len; 1625 char *cp; 1626 int savederr; /* saved errno */ 1627 1628 *errfmt = NULL; 1629 1630 if (!shellName) 1631 Shell_Init(); 1632 /* 1633 * Set up arguments for shell 1634 */ 1635 args[0] = shellName; 1636 args[1] = "-c"; 1637 args[2] = cmd; 1638 args[3] = NULL; 1639 1640 /* 1641 * Open a pipe for fetching its output 1642 */ 1643 if (pipe(fds) == -1) { 1644 *errfmt = "Couldn't create pipe for \"%s\""; 1645 goto bad; 1646 } 1647 1648 /* 1649 * Fork 1650 */ 1651 switch (cpid = vFork()) { 1652 case 0: 1653 /* 1654 * Close input side of pipe 1655 */ 1656 (void)close(fds[0]); 1657 1658 /* 1659 * Duplicate the output stream to the shell's output, then 1660 * shut the extra thing down. Note we don't fetch the error 1661 * stream...why not? Why? 1662 */ 1663 (void)dup2(fds[1], 1); 1664 (void)close(fds[1]); 1665 1666 Var_ExportVars(); 1667 1668 (void)execv(shellPath, UNCONST(args)); 1669 _exit(1); 1670 /*NOTREACHED*/ 1671 1672 case -1: 1673 *errfmt = "Couldn't exec \"%s\""; 1674 goto bad; 1675 1676 default: 1677 /* 1678 * No need for the writing half 1679 */ 1680 (void)close(fds[1]); 1681 1682 savederr = 0; 1683 Buf_Init(&buf, 0); 1684 1685 do { 1686 char result[BUFSIZ]; 1687 bytes_read = read(fds[0], result, sizeof(result)); 1688 if (bytes_read > 0) 1689 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1690 } 1691 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1692 if (bytes_read == -1) 1693 savederr = errno; 1694 1695 /* 1696 * Close the input side of the pipe. 1697 */ 1698 (void)close(fds[0]); 1699 1700 /* 1701 * Wait for the process to exit. 1702 */ 1703 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1704 JobReapChild(pid, status, FALSE); 1705 continue; 1706 } 1707 res_len = Buf_Size(&buf); 1708 res = Buf_Destroy(&buf, FALSE); 1709 1710 if (savederr != 0) 1711 *errfmt = "Couldn't read shell's output for \"%s\""; 1712 1713 if (WIFSIGNALED(status)) 1714 *errfmt = "\"%s\" exited on a signal"; 1715 else if (WEXITSTATUS(status) != 0) 1716 *errfmt = "\"%s\" returned non-zero status"; 1717 1718 /* Convert newlines to spaces. A final newline is just stripped */ 1719 if (res_len > 0 && res[res_len - 1] == '\n') 1720 res[res_len - 1] = '\0'; 1721 for (cp = res; *cp != '\0'; cp++) 1722 if (*cp == '\n') 1723 *cp = ' '; 1724 break; 1725 } 1726 return res; 1727 bad: 1728 return bmake_strdup(""); 1729 } 1730 1731 /*- 1732 * Error -- 1733 * Print an error message given its format. 1734 * 1735 * Results: 1736 * None. 1737 * 1738 * Side Effects: 1739 * The message is printed. 1740 */ 1741 /* VARARGS */ 1742 void 1743 Error(const char *fmt, ...) 1744 { 1745 va_list ap; 1746 FILE *err_file; 1747 1748 err_file = debug_file; 1749 if (err_file == stdout) 1750 err_file = stderr; 1751 (void)fflush(stdout); 1752 for (;;) { 1753 va_start(ap, fmt); 1754 fprintf(err_file, "%s: ", progname); 1755 (void)vfprintf(err_file, fmt, ap); 1756 va_end(ap); 1757 (void)fprintf(err_file, "\n"); 1758 (void)fflush(err_file); 1759 if (err_file == stderr) 1760 break; 1761 err_file = stderr; 1762 } 1763 } 1764 1765 /*- 1766 * Fatal -- 1767 * Produce a Fatal error message. If jobs are running, waits for them 1768 * to finish. 1769 * 1770 * Results: 1771 * None 1772 * 1773 * Side Effects: 1774 * The program exits 1775 */ 1776 /* VARARGS */ 1777 void 1778 Fatal(const char *fmt, ...) 1779 { 1780 va_list ap; 1781 1782 va_start(ap, fmt); 1783 if (jobsRunning) 1784 Job_Wait(); 1785 1786 (void)fflush(stdout); 1787 (void)vfprintf(stderr, fmt, ap); 1788 va_end(ap); 1789 (void)fprintf(stderr, "\n"); 1790 (void)fflush(stderr); 1791 1792 PrintOnError(NULL, NULL); 1793 1794 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1795 Targ_PrintGraph(2); 1796 Trace_Log(MAKEERROR, 0); 1797 exit(2); /* Not 1 so -q can distinguish error */ 1798 } 1799 1800 /* 1801 * Punt -- 1802 * Major exception once jobs are being created. Kills all jobs, prints 1803 * a message and exits. 1804 * 1805 * Results: 1806 * None 1807 * 1808 * Side Effects: 1809 * All children are killed indiscriminately and the program Lib_Exits 1810 */ 1811 /* VARARGS */ 1812 void 1813 Punt(const char *fmt, ...) 1814 { 1815 va_list ap; 1816 1817 va_start(ap, fmt); 1818 (void)fflush(stdout); 1819 (void)fprintf(stderr, "%s: ", progname); 1820 (void)vfprintf(stderr, fmt, ap); 1821 va_end(ap); 1822 (void)fprintf(stderr, "\n"); 1823 (void)fflush(stderr); 1824 1825 PrintOnError(NULL, NULL); 1826 1827 DieHorribly(); 1828 } 1829 1830 /*- 1831 * DieHorribly -- 1832 * Exit without giving a message. 1833 * 1834 * Results: 1835 * None 1836 * 1837 * Side Effects: 1838 * A big one... 1839 */ 1840 void 1841 DieHorribly(void) 1842 { 1843 if (jobsRunning) 1844 Job_AbortAll(); 1845 if (DEBUG(GRAPH2)) 1846 Targ_PrintGraph(2); 1847 Trace_Log(MAKEERROR, 0); 1848 exit(2); /* Not 1, so -q can distinguish error */ 1849 } 1850 1851 /* 1852 * Finish -- 1853 * Called when aborting due to errors in child shell to signal 1854 * abnormal exit. 1855 * 1856 * Results: 1857 * None 1858 * 1859 * Side Effects: 1860 * The program exits 1861 */ 1862 void 1863 Finish(int errors) 1864 /* number of errors encountered in Make_Make */ 1865 { 1866 if (dieQuietly(NULL, -1)) 1867 exit(2); 1868 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1869 } 1870 1871 /* 1872 * eunlink -- 1873 * Remove a file carefully, avoiding directories. 1874 */ 1875 int 1876 eunlink(const char *file) 1877 { 1878 struct stat st; 1879 1880 if (lstat(file, &st) == -1) 1881 return -1; 1882 1883 if (S_ISDIR(st.st_mode)) { 1884 errno = EISDIR; 1885 return -1; 1886 } 1887 return unlink(file); 1888 } 1889 1890 /* 1891 * execError -- 1892 * Print why exec failed, avoiding stdio. 1893 */ 1894 void 1895 execError(const char *af, const char *av) 1896 { 1897 #ifdef USE_IOVEC 1898 int i = 0; 1899 struct iovec iov[8]; 1900 #define IOADD(s) \ 1901 (void)(iov[i].iov_base = UNCONST(s), \ 1902 iov[i].iov_len = strlen(iov[i].iov_base), \ 1903 i++) 1904 #else 1905 #define IOADD(s) (void)write(2, s, strlen(s)) 1906 #endif 1907 1908 IOADD(progname); 1909 IOADD(": "); 1910 IOADD(af); 1911 IOADD("("); 1912 IOADD(av); 1913 IOADD(") failed ("); 1914 IOADD(strerror(errno)); 1915 IOADD(")\n"); 1916 1917 #ifdef USE_IOVEC 1918 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1919 continue; 1920 #endif 1921 } 1922 1923 /* 1924 * usage -- 1925 * exit with usage message 1926 */ 1927 static void 1928 usage(void) 1929 { 1930 char *p; 1931 if ((p = strchr(progname, '[')) != NULL) 1932 *p = '\0'; 1933 1934 (void)fprintf(stderr, 1935 "usage: %s [-BeikNnqrstWwX] \n" 1936 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1937 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1938 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1939 progname); 1940 exit(2); 1941 } 1942 1943 /* 1944 * realpath(3) can get expensive, cache results... 1945 */ 1946 static GNode *cached_realpaths = NULL; 1947 1948 static GNode * 1949 get_cached_realpaths(void) 1950 { 1951 1952 if (!cached_realpaths) { 1953 cached_realpaths = Targ_NewGN("Realpath"); 1954 #ifndef DEBUG_REALPATH_CACHE 1955 cached_realpaths->flags = INTERNAL; 1956 #endif 1957 } 1958 1959 return cached_realpaths; 1960 } 1961 1962 /* purge any relative paths */ 1963 static void 1964 purge_cached_realpaths(void) 1965 { 1966 GNode *cache = get_cached_realpaths(); 1967 Hash_Entry *he, *nhe; 1968 Hash_Search hs; 1969 1970 he = Hash_EnumFirst(&cache->context, &hs); 1971 while (he) { 1972 nhe = Hash_EnumNext(&hs); 1973 if (he->name[0] != '/') { 1974 if (DEBUG(DIR)) 1975 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1976 Hash_DeleteEntry(&cache->context, he); 1977 } 1978 he = nhe; 1979 } 1980 } 1981 1982 char * 1983 cached_realpath(const char *pathname, char *resolved) 1984 { 1985 GNode *cache; 1986 const char *rp; 1987 char *cp; 1988 1989 if (!pathname || !pathname[0]) 1990 return NULL; 1991 1992 cache = get_cached_realpaths(); 1993 1994 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1995 /* a hit */ 1996 strlcpy(resolved, rp, MAXPATHLEN); 1997 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1998 Var_Set(pathname, rp, cache); 1999 } /* else should we negative-cache? */ 2000 2001 bmake_free(cp); 2002 return rp ? resolved : NULL; 2003 } 2004 2005 int 2006 PrintAddr(void *a, void *b) 2007 { 2008 printf("%lx ", (unsigned long) a); 2009 return b ? 0 : 0; 2010 } 2011 2012 2013 static int 2014 addErrorCMD(void *cmdp, void *gnp MAKE_ATTR_UNUSED) 2015 { 2016 if (cmdp == NULL) 2017 return 1; /* stop */ 2018 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2019 return 0; 2020 } 2021 2022 /* 2023 * Return true if we should die without noise. 2024 * For example our failing child was a sub-make 2025 * or failure happend elsewhere. 2026 */ 2027 int 2028 dieQuietly(GNode *gn, int bf) 2029 { 2030 static int quietly = -1; 2031 2032 if (quietly < 0) { 2033 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2034 quietly = 0; 2035 else if (bf >= 0) 2036 quietly = bf; 2037 else 2038 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2039 } 2040 return quietly; 2041 } 2042 2043 void 2044 PrintOnError(GNode *gn, const char *s) 2045 { 2046 static GNode *en = NULL; 2047 const char *expr; 2048 char *cp; 2049 2050 if (DEBUG(HASH)) { 2051 Targ_Stats(); 2052 Var_Stats(); 2053 } 2054 2055 /* we generally want to keep quiet if a sub-make died */ 2056 if (dieQuietly(gn, -1)) 2057 return; 2058 2059 if (s) 2060 printf("%s", s); 2061 2062 printf("\n%s: stopped in %s\n", progname, curdir); 2063 2064 if (en) 2065 return; /* we've been here! */ 2066 if (gn) { 2067 /* 2068 * We can print this even if there is no .ERROR target. 2069 */ 2070 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2071 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2072 Lst_ForEach(gn->commands, addErrorCMD, gn); 2073 } 2074 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2075 cp = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2076 printf("%s", cp); 2077 free(cp); 2078 fflush(stdout); 2079 2080 /* 2081 * Finally, see if there is a .ERROR target, and run it if so. 2082 */ 2083 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2084 if (en) { 2085 en->type |= OP_SPECIAL; 2086 Compat_Make(en, en); 2087 } 2088 } 2089 2090 void 2091 Main_ExportMAKEFLAGS(Boolean first) 2092 { 2093 static Boolean once = TRUE; 2094 const char *expr; 2095 char *s; 2096 2097 if (once != first) 2098 return; 2099 once = FALSE; 2100 2101 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2102 s = Var_Subst(expr, VAR_CMD, VARE_WANTRES); 2103 if (s[0] != '\0') { 2104 #ifdef POSIX 2105 setenv("MAKEFLAGS", s, 1); 2106 #else 2107 setenv("MAKE", s, 1); 2108 #endif 2109 } 2110 } 2111 2112 char * 2113 getTmpdir(void) 2114 { 2115 static char *tmpdir = NULL; 2116 2117 if (!tmpdir) { 2118 struct stat st; 2119 2120 /* 2121 * Honor $TMPDIR but only if it is valid. 2122 * Ensure it ends with /. 2123 */ 2124 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2125 VARE_WANTRES); 2126 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2127 free(tmpdir); 2128 tmpdir = bmake_strdup(_PATH_TMP); 2129 } 2130 } 2131 return tmpdir; 2132 } 2133 2134 /* 2135 * Create and open a temp file using "pattern". 2136 * If "fnamep" is provided set it to a copy of the filename created. 2137 * Otherwise unlink the file once open. 2138 */ 2139 int 2140 mkTempFile(const char *pattern, char **fnamep) 2141 { 2142 static char *tmpdir = NULL; 2143 char tfile[MAXPATHLEN]; 2144 int fd; 2145 2146 if (!pattern) 2147 pattern = TMPPAT; 2148 if (!tmpdir) 2149 tmpdir = getTmpdir(); 2150 if (pattern[0] == '/') { 2151 snprintf(tfile, sizeof(tfile), "%s", pattern); 2152 } else { 2153 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2154 } 2155 if ((fd = mkstemp(tfile)) < 0) 2156 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2157 if (fnamep) { 2158 *fnamep = bmake_strdup(tfile); 2159 } else { 2160 unlink(tfile); /* we just want the descriptor */ 2161 } 2162 return fd; 2163 } 2164 2165 /* 2166 * Convert a string representation of a boolean. 2167 * Anything that looks like "No", "False", "Off", "0" etc, 2168 * is FALSE, otherwise TRUE. 2169 */ 2170 Boolean 2171 s2Boolean(const char *s, Boolean bf) 2172 { 2173 if (s) { 2174 switch(*s) { 2175 case '\0': /* not set - the default wins */ 2176 break; 2177 case '0': 2178 case 'F': 2179 case 'f': 2180 case 'N': 2181 case 'n': 2182 bf = FALSE; 2183 break; 2184 case 'O': 2185 case 'o': 2186 switch (s[1]) { 2187 case 'F': 2188 case 'f': 2189 bf = FALSE; 2190 break; 2191 default: 2192 bf = TRUE; 2193 break; 2194 } 2195 break; 2196 default: 2197 bf = TRUE; 2198 break; 2199 } 2200 } 2201 return bf; 2202 } 2203 2204 /* 2205 * Return a Boolean based on setting of a knob. 2206 * 2207 * If the knob is not set, the supplied default is the return value. 2208 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2209 * is FALSE, otherwise TRUE. 2210 */ 2211 Boolean 2212 getBoolean(const char *name, Boolean fallback) 2213 { 2214 char *expr = str_concat3("${", name, ":U:tl}"); 2215 char *value = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2216 Boolean res = s2Boolean(value, fallback); 2217 free(value); 2218 free(expr); 2219 return res; 2220 } 2221