1/* $NetBSD: main.c,v 1.272 2017/06/19 19:58:24 christos 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 72static char rcsid[] = "$NetBSD: main.c,v 1.272 2017/06/19 19:58:24 christos Exp $"; 73#else 74#include <sys/cdefs.h> 75#ifndef lint 76__COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78#endif /* not lint */ 79 80#ifndef lint 81#if 0 82static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83#else 84__RCSID("$NetBSD: main.c,v 1.272 2017/06/19 19:58:24 christos 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 154Lst create; /* Targets to be made */ 155time_t now; /* Time at start of make */ 156GNode *DEFAULT; /* .DEFAULT node */ 157Boolean allPrecious; /* .PRECIOUS given on line by itself */ 158Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 159 160static Boolean noBuiltins; /* -r flag */ 161static Lst makefiles; /* ordered list of makefiles to read */ 162static int printVars; /* -[vV] argument */ 163#define COMPAT_VARS 1 164#define EXPAND_VARS 2 165static Lst variables; /* list of variables to print */ 166int maxJobs; /* -j argument */ 167static int maxJobTokens; /* -j argument */ 168Boolean compatMake; /* -B argument */ 169int debug; /* -d argument */ 170Boolean debugVflag; /* -dV */ 171Boolean noExecute; /* -n flag */ 172Boolean noRecursiveExecute; /* -N flag */ 173Boolean keepgoing; /* -k flag */ 174Boolean queryFlag; /* -q flag */ 175Boolean touchFlag; /* -t flag */ 176Boolean enterFlag; /* -w flag */ 177Boolean enterFlagObj; /* -w and objdir != srcdir */ 178Boolean ignoreErrors; /* -i flag */ 179Boolean beSilent; /* -s flag */ 180Boolean oldVars; /* variable substitution style */ 181Boolean checkEnvFirst; /* -e flag */ 182Boolean parseWarnFatal; /* -W flag */ 183Boolean jobServer; /* -J flag */ 184static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 185Boolean varNoExportEnv; /* -X flag */ 186Boolean doing_depend; /* Set while reading .depend */ 187static Boolean jobsRunning; /* TRUE if the jobs might be running */ 188static const char * tracefile; 189static void MainParseArgs(int, char **); 190static int ReadMakefile(const void *, const void *); 191static void usage(void) MAKE_ATTR_DEAD; 192static void purge_cached_realpaths(void); 193 194static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 195static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 196char curdir[MAXPATHLEN + 1]; /* Startup directory */ 197char *progname; /* the program name */ 198char *makeDependfile; 199pid_t myPid; 200int makelevel; 201 202Boolean 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 213extern 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 */ 219static char * 220explode(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 247static void 248parse_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 } 362debug_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 */ 376static int 377is_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 */ 413static void 414MainParseArgs(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; 430rearg: 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; 679noarg: 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 */ 703void 704Main_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 * $MAKE may simply be naming the make(1) binary 724 */ 725 char *cp; 726 727 if (!(cp = strrchr(line, '/'))) 728 cp = line; 729 if ((cp = strstr(cp, "make")) && 730 strcmp(cp, "make") == 0) 731 return; 732 } 733#endif 734 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 735 (void)snprintf(buf, len, "%s %s", argv0, line); 736 free(p1); 737 738 argv = brk_string(buf, &argc, TRUE, &args); 739 if (argv == NULL) { 740 Error("Unterminated quoted string [%s]", buf); 741 free(buf); 742 return; 743 } 744 free(buf); 745 MainParseArgs(argc, argv); 746 747 free(args); 748 free(argv); 749} 750 751Boolean 752Main_SetObjdir(const char *fmt, ...) 753{ 754 struct stat sb; 755 char *path; 756 char buf[MAXPATHLEN + 1]; 757 char buf2[MAXPATHLEN + 1]; 758 Boolean rc = FALSE; 759 va_list ap; 760 761 va_start(ap, fmt); 762 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 763 va_end(ap); 764 765 if (path[0] != '/') { 766 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 767 path = buf2; 768 } 769 770 /* look for the directory and try to chdir there */ 771 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 772 if (chdir(path)) { 773 (void)fprintf(stderr, "make warning: %s: %s.\n", 774 path, strerror(errno)); 775 } else { 776 strncpy(objdir, path, MAXPATHLEN); 777 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 778 setenv("PWD", objdir, 1); 779 Dir_InitDot(); 780 purge_cached_realpaths(); 781 rc = TRUE; 782 if (enterFlag && strcmp(objdir, curdir) != 0) 783 enterFlagObj = TRUE; 784 } 785 } 786 787 return rc; 788} 789 790static Boolean 791Main_SetVarObjdir(const char *var, const char *suffix) 792{ 793 char *p, *path, *xpath; 794 795 if ((path = Var_Value(var, VAR_CMD, &p)) == NULL) 796 return FALSE; 797 798 /* expand variable substitutions */ 799 if (strchr(path, '$') != 0) 800 xpath = Var_Subst(NULL, path, VAR_GLOBAL, VARF_WANTRES); 801 else 802 xpath = path; 803 804 (void)Main_SetObjdir("%s%s", xpath, suffix); 805 806 if (xpath != path) 807 free(xpath); 808 free(p); 809 return TRUE; 810} 811 812/*- 813 * ReadAllMakefiles -- 814 * wrapper around ReadMakefile() to read all. 815 * 816 * Results: 817 * TRUE if ok, FALSE on error 818 */ 819static int 820ReadAllMakefiles(const void *p, const void *q) 821{ 822 return (ReadMakefile(p, q) == 0); 823} 824 825int 826str2Lst_Append(Lst lp, char *str, const char *sep) 827{ 828 char *cp; 829 int n; 830 831 if (!sep) 832 sep = " \t"; 833 834 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 835 (void)Lst_AtEnd(lp, cp); 836 n++; 837 } 838 return (n); 839} 840 841#ifdef SIGINFO 842/*ARGSUSED*/ 843static void 844siginfo(int signo MAKE_ATTR_UNUSED) 845{ 846 char dir[MAXPATHLEN]; 847 char str[2 * MAXPATHLEN]; 848 int len; 849 if (getcwd(dir, sizeof(dir)) == NULL) 850 return; 851 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 852 if (len > 0) 853 (void)write(STDERR_FILENO, str, (size_t)len); 854} 855#endif 856 857/* 858 * Allow makefiles some control over the mode we run in. 859 */ 860void 861MakeMode(const char *mode) 862{ 863 char *mp = NULL; 864 865 if (!mode) 866 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 867 VAR_GLOBAL, VARF_WANTRES); 868 869 if (mode && *mode) { 870 if (strstr(mode, "compat")) { 871 compatMake = TRUE; 872 forceJobs = FALSE; 873 } 874#if USE_META 875 if (strstr(mode, "meta")) 876 meta_mode_init(mode); 877#endif 878 } 879 880 free(mp); 881} 882 883static void 884doPrintVars(void) 885{ 886 LstNode ln; 887 Boolean expandVars; 888 889 if (printVars == EXPAND_VARS) 890 expandVars = TRUE; 891 else if (debugVflag) 892 expandVars = FALSE; 893 else 894 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 895 896 for (ln = Lst_First(variables); ln != NULL; 897 ln = Lst_Succ(ln)) { 898 char *var = (char *)Lst_Datum(ln); 899 char *value; 900 char *p1; 901 902 if (strchr(var, '$')) { 903 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 904 VARF_WANTRES); 905 } else if (expandVars) { 906 char tmp[128]; 907 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 908 909 if (len >= (int)sizeof(tmp)) 910 Fatal("%s: variable name too big: %s", 911 progname, var); 912 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 913 VARF_WANTRES); 914 } else { 915 value = Var_Value(var, VAR_GLOBAL, &p1); 916 } 917 printf("%s\n", value ? value : ""); 918 free(p1); 919 } 920} 921 922static Boolean 923runTargets(void) 924{ 925 Lst targs; /* target nodes to create -- passed to Make_Init */ 926 Boolean outOfDate; /* FALSE if all targets up to date */ 927 928 /* 929 * Have now read the entire graph and need to make a list of 930 * targets to create. If none was given on the command line, 931 * we consult the parsing module to find the main target(s) 932 * to create. 933 */ 934 if (Lst_IsEmpty(create)) 935 targs = Parse_MainName(); 936 else 937 targs = Targ_FindList(create, TARG_CREATE); 938 939 if (!compatMake) { 940 /* 941 * Initialize job module before traversing the graph 942 * now that any .BEGIN and .END targets have been read. 943 * This is done only if the -q flag wasn't given 944 * (to prevent the .BEGIN from being executed should 945 * it exist). 946 */ 947 if (!queryFlag) { 948 Job_Init(); 949 jobsRunning = TRUE; 950 } 951 952 /* Traverse the graph, checking on all the targets */ 953 outOfDate = Make_Run(targs); 954 } else { 955 /* 956 * Compat_Init will take care of creating all the 957 * targets as well as initializing the module. 958 */ 959 Compat_Run(targs); 960 outOfDate = FALSE; 961 } 962 Lst_Destroy(targs, NULL); 963 return outOfDate; 964} 965 966/*- 967 * main -- 968 * The main function, for obvious reasons. Initializes variables 969 * and a few modules, then parses the arguments give it in the 970 * environment and on the command line. Reads the system makefile 971 * followed by either Makefile, makefile or the file given by the 972 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 973 * flags it has received by then uses either the Make or the Compat 974 * module to create the initial list of targets. 975 * 976 * Results: 977 * If -q was given, exits -1 if anything was out-of-date. Else it exits 978 * 0. 979 * 980 * Side Effects: 981 * The program exits when done. Targets are created. etc. etc. etc. 982 */ 983int 984main(int argc, char **argv) 985{ 986 Boolean outOfDate; /* FALSE if all targets up to date */ 987 struct stat sb, sa; 988 char *p1, *path; 989 char mdpath[MAXPATHLEN]; 990#ifdef FORCE_MACHINE 991 const char *machine = FORCE_MACHINE; 992#else 993 const char *machine = getenv("MACHINE"); 994#endif 995 const char *machine_arch = getenv("MACHINE_ARCH"); 996 char *syspath = getenv("MAKESYSPATH"); 997 Lst sysMkPath; /* Path of sys.mk */ 998 char *cp = NULL, *start; 999 /* avoid faults on read-only strings */ 1000 static char defsyspath[] = _PATH_DEFSYSPATH; 1001 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 1002 struct timeval rightnow; /* to initialize random seed */ 1003 struct utsname utsname; 1004 1005 /* default to writing debug to stderr */ 1006 debug_file = stderr; 1007 1008#ifdef SIGINFO 1009 (void)bmake_signal(SIGINFO, siginfo); 1010#endif 1011 /* 1012 * Set the seed to produce a different random sequence 1013 * on each program execution. 1014 */ 1015 gettimeofday(&rightnow, NULL); 1016 srandom(rightnow.tv_sec + rightnow.tv_usec); 1017 1018 if ((progname = strrchr(argv[0], '/')) != NULL) 1019 progname++; 1020 else 1021 progname = argv[0]; 1022#if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1023 /* 1024 * get rid of resource limit on file descriptors 1025 */ 1026 { 1027 struct rlimit rl; 1028 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1029 rl.rlim_cur != rl.rlim_max) { 1030 rl.rlim_cur = rl.rlim_max; 1031 (void)setrlimit(RLIMIT_NOFILE, &rl); 1032 } 1033 } 1034#endif 1035 1036 if (uname(&utsname) == -1) { 1037 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1038 strerror(errno)); 1039 exit(2); 1040 } 1041 1042 /* 1043 * Get the name of this type of MACHINE from utsname 1044 * so we can share an executable for similar machines. 1045 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1046 * 1047 * Note that both MACHINE and MACHINE_ARCH are decided at 1048 * run-time. 1049 */ 1050 if (!machine) { 1051#ifdef MAKE_NATIVE 1052 machine = utsname.machine; 1053#else 1054#ifdef MAKE_MACHINE 1055 machine = MAKE_MACHINE; 1056#else 1057 machine = "unknown"; 1058#endif 1059#endif 1060 } 1061 1062 if (!machine_arch) { 1063#if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH) 1064 static char machine_arch_buf[sizeof(utsname.machine)]; 1065 int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1066 size_t len = sizeof(machine_arch_buf); 1067 1068 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1069 &len, NULL, 0) < 0) { 1070 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1071 strerror(errno)); 1072 exit(2); 1073 } 1074 1075 machine_arch = machine_arch_buf; 1076#else 1077#ifndef MACHINE_ARCH 1078#ifdef MAKE_MACHINE_ARCH 1079 machine_arch = MAKE_MACHINE_ARCH; 1080#else 1081 machine_arch = "unknown"; 1082#endif 1083#else 1084 machine_arch = MACHINE_ARCH; 1085#endif 1086#endif 1087 } 1088 1089 myPid = getpid(); /* remember this for vFork() */ 1090 1091 /* 1092 * Just in case MAKEOBJDIR wants us to do something tricky. 1093 */ 1094 Var_Init(); /* Initialize the lists of variables for 1095 * parsing arguments */ 1096 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 1097 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 1098 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 1099#ifdef MAKE_VERSION 1100 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 1101#endif 1102 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 1103 /* 1104 * This is the traditional preference for makefiles. 1105 */ 1106#ifndef MAKEFILE_PREFERENCE_LIST 1107# define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1108#endif 1109 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1110 VAR_GLOBAL, 0); 1111 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 1112 1113 create = Lst_Init(FALSE); 1114 makefiles = Lst_Init(FALSE); 1115 printVars = 0; 1116 debugVflag = FALSE; 1117 variables = Lst_Init(FALSE); 1118 beSilent = FALSE; /* Print commands as executed */ 1119 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1120 noExecute = FALSE; /* Execute all commands */ 1121 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1122 keepgoing = FALSE; /* Stop on error */ 1123 allPrecious = FALSE; /* Remove targets when interrupted */ 1124 deleteOnError = FALSE; /* Historical default behavior */ 1125 queryFlag = FALSE; /* This is not just a check-run */ 1126 noBuiltins = FALSE; /* Read the built-in rules */ 1127 touchFlag = FALSE; /* Actually update targets */ 1128 debug = 0; /* No debug verbosity, please. */ 1129 jobsRunning = FALSE; 1130 1131 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1132 maxJobTokens = maxJobs; 1133 compatMake = FALSE; /* No compat mode */ 1134 ignorePWD = FALSE; 1135 1136 /* 1137 * Initialize the parsing, directory and variable modules to prepare 1138 * for the reading of inclusion paths and variable settings on the 1139 * command line 1140 */ 1141 1142 /* 1143 * Initialize various variables. 1144 * MAKE also gets this name, for compatibility 1145 * .MAKEFLAGS gets set to the empty string just in case. 1146 * MFLAGS also gets initialized empty, for compatibility. 1147 */ 1148 Parse_Init(); 1149 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1150 /* 1151 * Leave alone if it is an absolute path, or if it does 1152 * not contain a '/' in which case we need to find it in 1153 * the path, like execvp(3) and the shells do. 1154 */ 1155 p1 = argv[0]; 1156 } else { 1157 /* 1158 * A relative path, canonicalize it. 1159 */ 1160 p1 = cached_realpath(argv[0], mdpath); 1161 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1162 p1 = argv[0]; /* realpath failed */ 1163 } 1164 } 1165 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1166 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1167 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1168 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1169 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1170 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1171 /* some makefiles need to know this */ 1172 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1173 1174 /* 1175 * Set some other useful macros 1176 */ 1177 { 1178 char tmp[64], *ep; 1179 1180 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1181 if (makelevel < 0) 1182 makelevel = 0; 1183 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1184 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1185 snprintf(tmp, sizeof(tmp), "%u", myPid); 1186 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1187 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1188 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1189 } 1190 if (makelevel > 0) { 1191 char pn[1024]; 1192 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1193 progname = bmake_strdup(pn); 1194 } 1195 1196#ifdef USE_META 1197 meta_init(); 1198#endif 1199 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1200 1201 /* 1202 * First snag any flags out of the MAKE environment variable. 1203 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1204 * in a different format). 1205 */ 1206#ifdef POSIX 1207 p1 = explode(getenv("MAKEFLAGS")); 1208 Main_ParseArgLine(p1); 1209 free(p1); 1210#else 1211 Main_ParseArgLine(getenv("MAKE")); 1212#endif 1213 1214 /* 1215 * Find where we are (now). 1216 * We take care of PWD for the automounter below... 1217 */ 1218 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1219 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1220 progname, strerror(errno)); 1221 exit(2); 1222 } 1223 1224 MainParseArgs(argc, argv); 1225 1226 if (enterFlag) 1227 printf("%s: Entering directory `%s'\n", progname, curdir); 1228 1229 /* 1230 * Verify that cwd is sane. 1231 */ 1232 if (stat(curdir, &sa) == -1) { 1233 (void)fprintf(stderr, "%s: %s: %s.\n", 1234 progname, curdir, strerror(errno)); 1235 exit(2); 1236 } 1237 1238 /* 1239 * All this code is so that we know where we are when we start up 1240 * on a different machine with pmake. 1241 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1242 * since the value of curdir can vary depending on how we got 1243 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1244 * or via subdir.mk in which case its likely a shell which does 1245 * not provide it. 1246 * So, to stop it breaking this case only, we ignore PWD if 1247 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1248 */ 1249#ifndef NO_PWD_OVERRIDE 1250 if (!ignorePWD) { 1251 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1252 1253 if ((pwd = getenv("PWD")) != NULL && 1254 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1255 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1256 VAR_CMD, &ptmp2); 1257 1258 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1259 if (stat(pwd, &sb) == 0 && 1260 sa.st_ino == sb.st_ino && 1261 sa.st_dev == sb.st_dev) 1262 (void)strncpy(curdir, pwd, MAXPATHLEN); 1263 } 1264 } 1265 free(ptmp1); 1266 free(ptmp2); 1267 } 1268#endif 1269 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1270 1271 /* 1272 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1273 * MAKEOBJDIR is set in the environment, try only that value 1274 * and fall back to .CURDIR if it does not exist. 1275 * 1276 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1277 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1278 * of these paths exist, just use .CURDIR. 1279 */ 1280 Dir_Init(curdir); 1281 (void)Main_SetObjdir("%s", curdir); 1282 1283 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1284 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1285 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1286 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1287 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1288 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1289 1290 /* 1291 * Initialize archive, target and suffix modules in preparation for 1292 * parsing the makefile(s) 1293 */ 1294 Arch_Init(); 1295 Targ_Init(); 1296 Suff_Init(); 1297 Trace_Init(tracefile); 1298 1299 DEFAULT = NULL; 1300 (void)time(&now); 1301 1302 Trace_Log(MAKESTART, NULL); 1303 1304 /* 1305 * Set up the .TARGETS variable to contain the list of targets to be 1306 * created. If none specified, make the variable empty -- the parser 1307 * will fill the thing in with the default or .MAIN target. 1308 */ 1309 if (!Lst_IsEmpty(create)) { 1310 LstNode ln; 1311 1312 for (ln = Lst_First(create); ln != NULL; 1313 ln = Lst_Succ(ln)) { 1314 char *name = (char *)Lst_Datum(ln); 1315 1316 Var_Append(".TARGETS", name, VAR_GLOBAL); 1317 } 1318 } else 1319 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1320 1321 1322 /* 1323 * If no user-supplied system path was given (through the -m option) 1324 * add the directories from the DEFSYSPATH (more than one may be given 1325 * as dir1:...:dirn) to the system include path. 1326 */ 1327 if (syspath == NULL || *syspath == '\0') 1328 syspath = defsyspath; 1329 else 1330 syspath = bmake_strdup(syspath); 1331 1332 for (start = syspath; *start != '\0'; start = cp) { 1333 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1334 continue; 1335 if (*cp == ':') { 1336 *cp++ = '\0'; 1337 } 1338 /* look for magic parent directory search string */ 1339 if (strncmp(".../", start, 4) != 0) { 1340 (void)Dir_AddDir(defIncPath, start); 1341 } else { 1342 if (Dir_FindHereOrAbove(curdir, start+4, 1343 found_path, sizeof(found_path))) { 1344 (void)Dir_AddDir(defIncPath, found_path); 1345 } 1346 } 1347 } 1348 if (syspath != defsyspath) 1349 free(syspath); 1350 1351 /* 1352 * Read in the built-in rules first, followed by the specified 1353 * makefile, if it was (makefile != NULL), or the default 1354 * makefile and Makefile, in that order, if it wasn't. 1355 */ 1356 if (!noBuiltins) { 1357 LstNode ln; 1358 1359 sysMkPath = Lst_Init(FALSE); 1360 Dir_Expand(_PATH_DEFSYSMK, 1361 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1362 sysMkPath); 1363 if (Lst_IsEmpty(sysMkPath)) 1364 Fatal("%s: no system rules (%s).", progname, 1365 _PATH_DEFSYSMK); 1366 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1367 if (ln == NULL) 1368 Fatal("%s: cannot open %s.", progname, 1369 (char *)Lst_Datum(ln)); 1370 } 1371 1372 if (!Lst_IsEmpty(makefiles)) { 1373 LstNode ln; 1374 1375 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1376 if (ln != NULL) 1377 Fatal("%s: cannot open %s.", progname, 1378 (char *)Lst_Datum(ln)); 1379 } else { 1380 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1381 VAR_CMD, VARF_WANTRES); 1382 if (p1) { 1383 (void)str2Lst_Append(makefiles, p1, NULL); 1384 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1385 free(p1); 1386 } 1387 } 1388 1389 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1390 if (!noBuiltins || !printVars) { 1391 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1392 VAR_CMD, VARF_WANTRES); 1393 doing_depend = TRUE; 1394 (void)ReadMakefile(makeDependfile, NULL); 1395 doing_depend = FALSE; 1396 } 1397 1398 if (enterFlagObj) 1399 printf("%s: Entering directory `%s'\n", progname, objdir); 1400 1401 MakeMode(NULL); 1402 1403 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1404 free(p1); 1405 1406 if (!forceJobs && !compatMake && 1407 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1408 char *value; 1409 int n; 1410 1411 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1412 n = strtol(value, NULL, 0); 1413 if (n < 1) { 1414 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1415 progname); 1416 exit(1); 1417 } 1418 if (n != maxJobs) { 1419 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1420 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1421 } 1422 maxJobs = n; 1423 maxJobTokens = maxJobs; 1424 forceJobs = TRUE; 1425 free(value); 1426 } 1427 1428 /* 1429 * Be compatible if user did not specify -j and did not explicitly 1430 * turned compatibility on 1431 */ 1432 if (!compatMake && !forceJobs) { 1433 compatMake = TRUE; 1434 } 1435 1436 if (!compatMake) 1437 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1438 if (DEBUG(JOB)) 1439 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1440 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1441 1442 if (!printVars) 1443 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1444 1445 /* 1446 * For compatibility, look at the directories in the VPATH variable 1447 * and add them to the search path, if the variable is defined. The 1448 * variable's value is in the same format as the PATH envariable, i.e. 1449 * <directory>:<directory>:<directory>... 1450 */ 1451 if (Var_Exists("VPATH", VAR_CMD)) { 1452 char *vpath, savec; 1453 /* 1454 * GCC stores string constants in read-only memory, but 1455 * Var_Subst will want to write this thing, so store it 1456 * in an array 1457 */ 1458 static char VPATH[] = "${VPATH}"; 1459 1460 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1461 path = vpath; 1462 do { 1463 /* skip to end of directory */ 1464 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1465 continue; 1466 /* Save terminator character so know when to stop */ 1467 savec = *cp; 1468 *cp = '\0'; 1469 /* Add directory to search path */ 1470 (void)Dir_AddDir(dirSearchPath, path); 1471 *cp = savec; 1472 path = cp + 1; 1473 } while (savec == ':'); 1474 free(vpath); 1475 } 1476 1477 /* 1478 * Now that all search paths have been read for suffixes et al, it's 1479 * time to add the default search path to their lists... 1480 */ 1481 Suff_DoPaths(); 1482 1483 /* 1484 * Propagate attributes through :: dependency lists. 1485 */ 1486 Targ_Propagate(); 1487 1488 /* print the initial graph, if the user requested it */ 1489 if (DEBUG(GRAPH1)) 1490 Targ_PrintGraph(1); 1491 1492 /* print the values of any variables requested by the user */ 1493 if (printVars) { 1494 doPrintVars(); 1495 outOfDate = FALSE; 1496 } else { 1497 outOfDate = runTargets(); 1498 } 1499 1500#ifdef CLEANUP 1501 Lst_Destroy(variables, NULL); 1502 Lst_Destroy(makefiles, NULL); 1503 Lst_Destroy(create, (FreeProc *)free); 1504#endif 1505 1506 /* print the graph now it's been processed if the user requested it */ 1507 if (DEBUG(GRAPH2)) 1508 Targ_PrintGraph(2); 1509 1510 Trace_Log(MAKEEND, 0); 1511 1512 if (enterFlagObj) 1513 printf("%s: Leaving directory `%s'\n", progname, objdir); 1514 if (enterFlag) 1515 printf("%s: Leaving directory `%s'\n", progname, curdir); 1516 1517#ifdef USE_META 1518 meta_finish(); 1519#endif 1520 Suff_End(); 1521 Targ_End(); 1522 Arch_End(); 1523 Var_End(); 1524 Parse_End(); 1525 Dir_End(); 1526 Job_End(); 1527 Trace_End(); 1528 1529 return outOfDate ? 1 : 0; 1530} 1531 1532/*- 1533 * ReadMakefile -- 1534 * Open and parse the given makefile. 1535 * 1536 * Results: 1537 * 0 if ok. -1 if couldn't open file. 1538 * 1539 * Side Effects: 1540 * lots 1541 */ 1542static int 1543ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1544{ 1545 const char *fname = p; /* makefile to read */ 1546 int fd; 1547 size_t len = MAXPATHLEN; 1548 char *name, *path = bmake_malloc(len); 1549 1550 if (!strcmp(fname, "-")) { 1551 Parse_File(NULL /*stdin*/, -1); 1552 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1553 } else { 1554 /* if we've chdir'd, rebuild the path name */ 1555 if (strcmp(curdir, objdir) && *fname != '/') { 1556 size_t plen = strlen(curdir) + strlen(fname) + 2; 1557 if (len < plen) 1558 path = bmake_realloc(path, len = 2 * plen); 1559 1560 (void)snprintf(path, len, "%s/%s", curdir, fname); 1561 fd = open(path, O_RDONLY); 1562 if (fd != -1) { 1563 fname = path; 1564 goto found; 1565 } 1566 1567 /* If curdir failed, try objdir (ala .depend) */ 1568 plen = strlen(objdir) + strlen(fname) + 2; 1569 if (len < plen) 1570 path = bmake_realloc(path, len = 2 * plen); 1571 (void)snprintf(path, len, "%s/%s", objdir, fname); 1572 fd = open(path, O_RDONLY); 1573 if (fd != -1) { 1574 fname = path; 1575 goto found; 1576 } 1577 } else { 1578 fd = open(fname, O_RDONLY); 1579 if (fd != -1) 1580 goto found; 1581 } 1582 /* look in -I and system include directories. */ 1583 name = Dir_FindFile(fname, parseIncPath); 1584 if (!name) 1585 name = Dir_FindFile(fname, 1586 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1587 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1588 free(name); 1589 free(path); 1590 return(-1); 1591 } 1592 fname = name; 1593 /* 1594 * set the MAKEFILE variable desired by System V fans -- the 1595 * placement of the setting here means it gets set to the last 1596 * makefile specified, as it is set by SysV make. 1597 */ 1598found: 1599 if (!doing_depend) 1600 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1601 Parse_File(fname, fd); 1602 } 1603 free(path); 1604 return(0); 1605} 1606 1607 1608 1609/*- 1610 * Cmd_Exec -- 1611 * Execute the command in cmd, and return the output of that command 1612 * in a string. 1613 * 1614 * Results: 1615 * A string containing the output of the command, or the empty string 1616 * If errnum is not NULL, it contains the reason for the command failure 1617 * 1618 * Side Effects: 1619 * The string must be freed by the caller. 1620 */ 1621char * 1622Cmd_Exec(const char *cmd, const char **errnum) 1623{ 1624 const char *args[4]; /* Args for invoking the shell */ 1625 int fds[2]; /* Pipe streams */ 1626 int cpid; /* Child PID */ 1627 int pid; /* PID from wait() */ 1628 char *res; /* result */ 1629 WAIT_T status; /* command exit status */ 1630 Buffer buf; /* buffer to store the result */ 1631 char *cp; 1632 int cc; /* bytes read, or -1 */ 1633 int savederr; /* saved errno */ 1634 1635 1636 *errnum = NULL; 1637 1638 if (!shellName) 1639 Shell_Init(); 1640 /* 1641 * Set up arguments for shell 1642 */ 1643 args[0] = shellName; 1644 args[1] = "-c"; 1645 args[2] = cmd; 1646 args[3] = NULL; 1647 1648 /* 1649 * Open a pipe for fetching its output 1650 */ 1651 if (pipe(fds) == -1) { 1652 *errnum = "Couldn't create pipe for \"%s\""; 1653 goto bad; 1654 } 1655 1656 /* 1657 * Fork 1658 */ 1659 switch (cpid = vFork()) { 1660 case 0: 1661 /* 1662 * Close input side of pipe 1663 */ 1664 (void)close(fds[0]); 1665 1666 /* 1667 * Duplicate the output stream to the shell's output, then 1668 * shut the extra thing down. Note we don't fetch the error 1669 * stream...why not? Why? 1670 */ 1671 (void)dup2(fds[1], 1); 1672 (void)close(fds[1]); 1673 1674 Var_ExportVars(); 1675 1676 (void)execv(shellPath, UNCONST(args)); 1677 _exit(1); 1678 /*NOTREACHED*/ 1679 1680 case -1: 1681 *errnum = "Couldn't exec \"%s\""; 1682 goto bad; 1683 1684 default: 1685 /* 1686 * No need for the writing half 1687 */ 1688 (void)close(fds[1]); 1689 1690 savederr = 0; 1691 Buf_Init(&buf, 0); 1692 1693 do { 1694 char result[BUFSIZ]; 1695 cc = read(fds[0], result, sizeof(result)); 1696 if (cc > 0) 1697 Buf_AddBytes(&buf, cc, result); 1698 } 1699 while (cc > 0 || (cc == -1 && errno == EINTR)); 1700 if (cc == -1) 1701 savederr = errno; 1702 1703 /* 1704 * Close the input side of the pipe. 1705 */ 1706 (void)close(fds[0]); 1707 1708 /* 1709 * Wait for the process to exit. 1710 */ 1711 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1712 JobReapChild(pid, status, FALSE); 1713 continue; 1714 } 1715 cc = Buf_Size(&buf); 1716 res = Buf_Destroy(&buf, FALSE); 1717 1718 if (savederr != 0) 1719 *errnum = "Couldn't read shell's output for \"%s\""; 1720 1721 if (WIFSIGNALED(status)) 1722 *errnum = "\"%s\" exited on a signal"; 1723 else if (WEXITSTATUS(status) != 0) 1724 *errnum = "\"%s\" returned non-zero status"; 1725 1726 /* 1727 * Null-terminate the result, convert newlines to spaces and 1728 * install it in the variable. 1729 */ 1730 res[cc] = '\0'; 1731 cp = &res[cc]; 1732 1733 if (cc > 0 && *--cp == '\n') { 1734 /* 1735 * A final newline is just stripped 1736 */ 1737 *cp-- = '\0'; 1738 } 1739 while (cp >= res) { 1740 if (*cp == '\n') { 1741 *cp = ' '; 1742 } 1743 cp--; 1744 } 1745 break; 1746 } 1747 return res; 1748bad: 1749 res = bmake_malloc(1); 1750 *res = '\0'; 1751 return res; 1752} 1753 1754/*- 1755 * Error -- 1756 * Print an error message given its format. 1757 * 1758 * Results: 1759 * None. 1760 * 1761 * Side Effects: 1762 * The message is printed. 1763 */ 1764/* VARARGS */ 1765void 1766Error(const char *fmt, ...) 1767{ 1768 va_list ap; 1769 FILE *err_file; 1770 1771 err_file = debug_file; 1772 if (err_file == stdout) 1773 err_file = stderr; 1774 (void)fflush(stdout); 1775 for (;;) { 1776 va_start(ap, fmt); 1777 fprintf(err_file, "%s: ", progname); 1778 (void)vfprintf(err_file, fmt, ap); 1779 va_end(ap); 1780 (void)fprintf(err_file, "\n"); 1781 (void)fflush(err_file); 1782 if (err_file == stderr) 1783 break; 1784 err_file = stderr; 1785 } 1786} 1787 1788/*- 1789 * Fatal -- 1790 * Produce a Fatal error message. If jobs are running, waits for them 1791 * to finish. 1792 * 1793 * Results: 1794 * None 1795 * 1796 * Side Effects: 1797 * The program exits 1798 */ 1799/* VARARGS */ 1800void 1801Fatal(const char *fmt, ...) 1802{ 1803 va_list ap; 1804 1805 va_start(ap, fmt); 1806 if (jobsRunning) 1807 Job_Wait(); 1808 1809 (void)fflush(stdout); 1810 (void)vfprintf(stderr, fmt, ap); 1811 va_end(ap); 1812 (void)fprintf(stderr, "\n"); 1813 (void)fflush(stderr); 1814 1815 PrintOnError(NULL, NULL); 1816 1817 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1818 Targ_PrintGraph(2); 1819 Trace_Log(MAKEERROR, 0); 1820 exit(2); /* Not 1 so -q can distinguish error */ 1821} 1822 1823/* 1824 * Punt -- 1825 * Major exception once jobs are being created. Kills all jobs, prints 1826 * a message and exits. 1827 * 1828 * Results: 1829 * None 1830 * 1831 * Side Effects: 1832 * All children are killed indiscriminately and the program Lib_Exits 1833 */ 1834/* VARARGS */ 1835void 1836Punt(const char *fmt, ...) 1837{ 1838 va_list ap; 1839 1840 va_start(ap, fmt); 1841 (void)fflush(stdout); 1842 (void)fprintf(stderr, "%s: ", progname); 1843 (void)vfprintf(stderr, fmt, ap); 1844 va_end(ap); 1845 (void)fprintf(stderr, "\n"); 1846 (void)fflush(stderr); 1847 1848 PrintOnError(NULL, NULL); 1849 1850 DieHorribly(); 1851} 1852 1853/*- 1854 * DieHorribly -- 1855 * Exit without giving a message. 1856 * 1857 * Results: 1858 * None 1859 * 1860 * Side Effects: 1861 * A big one... 1862 */ 1863void 1864DieHorribly(void) 1865{ 1866 if (jobsRunning) 1867 Job_AbortAll(); 1868 if (DEBUG(GRAPH2)) 1869 Targ_PrintGraph(2); 1870 Trace_Log(MAKEERROR, 0); 1871 exit(2); /* Not 1, so -q can distinguish error */ 1872} 1873 1874/* 1875 * Finish -- 1876 * Called when aborting due to errors in child shell to signal 1877 * abnormal exit. 1878 * 1879 * Results: 1880 * None 1881 * 1882 * Side Effects: 1883 * The program exits 1884 */ 1885void 1886Finish(int errors) 1887 /* number of errors encountered in Make_Make */ 1888{ 1889 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1890} 1891 1892/* 1893 * eunlink -- 1894 * Remove a file carefully, avoiding directories. 1895 */ 1896int 1897eunlink(const char *file) 1898{ 1899 struct stat st; 1900 1901 if (lstat(file, &st) == -1) 1902 return -1; 1903 1904 if (S_ISDIR(st.st_mode)) { 1905 errno = EISDIR; 1906 return -1; 1907 } 1908 return unlink(file); 1909} 1910 1911/* 1912 * execError -- 1913 * Print why exec failed, avoiding stdio. 1914 */ 1915void 1916execError(const char *af, const char *av) 1917{ 1918#ifdef USE_IOVEC 1919 int i = 0; 1920 struct iovec iov[8]; 1921#define IOADD(s) \ 1922 (void)(iov[i].iov_base = UNCONST(s), \ 1923 iov[i].iov_len = strlen(iov[i].iov_base), \ 1924 i++) 1925#else 1926#define IOADD(s) (void)write(2, s, strlen(s)) 1927#endif 1928 1929 IOADD(progname); 1930 IOADD(": "); 1931 IOADD(af); 1932 IOADD("("); 1933 IOADD(av); 1934 IOADD(") failed ("); 1935 IOADD(strerror(errno)); 1936 IOADD(")\n"); 1937 1938#ifdef USE_IOVEC 1939 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1940 continue; 1941#endif 1942} 1943 1944/* 1945 * usage -- 1946 * exit with usage message 1947 */ 1948static void 1949usage(void) 1950{ 1951 char *p; 1952 if ((p = strchr(progname, '[')) != NULL) 1953 *p = '\0'; 1954 1955 (void)fprintf(stderr, 1956"usage: %s [-BeikNnqrstWwX] \n\ 1957 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1958 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1959 [-V variable] [-v variable] [variable=value] [target ...]\n", 1960 progname); 1961 exit(2); 1962} 1963 1964/* 1965 * realpath(3) can get expensive, cache results... 1966 */ 1967static GNode *cached_realpaths = NULL; 1968 1969static GNode * 1970get_cached_realpaths(void) 1971{ 1972 1973 if (!cached_realpaths) { 1974 cached_realpaths = Targ_NewGN("Realpath"); 1975#ifndef DEBUG_REALPATH_CACHE 1976 cached_realpaths->flags = INTERNAL; 1977#endif 1978 } 1979 1980 return cached_realpaths; 1981} 1982 1983/* purge any relative paths */ 1984static void 1985purge_cached_realpaths(void) 1986{ 1987 GNode *cache = get_cached_realpaths(); 1988 Hash_Entry *he, *nhe; 1989 Hash_Search hs; 1990 1991 he = Hash_EnumFirst(&cache->context, &hs); 1992 while (he) { 1993 nhe = Hash_EnumNext(&hs); 1994 if (he->name[0] != '/') { 1995 if (DEBUG(DIR)) 1996 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1997 Hash_DeleteEntry(&cache->context, he); 1998 } 1999 he = nhe; 2000 } 2001} 2002 2003char * 2004cached_realpath(const char *pathname, char *resolved) 2005{ 2006 GNode *cache; 2007 char *rp, *cp; 2008 2009 if (!pathname || !pathname[0]) 2010 return NULL; 2011 2012 cache = get_cached_realpaths(); 2013 2014 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 2015 /* a hit */ 2016 strlcpy(resolved, rp, MAXPATHLEN); 2017 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2018 Var_Set(pathname, rp, cache, 0); 2019 } 2020 free(cp); 2021 return rp ? resolved : NULL; 2022} 2023 2024int 2025PrintAddr(void *a, void *b) 2026{ 2027 printf("%lx ", (unsigned long) a); 2028 return b ? 0 : 0; 2029} 2030 2031 2032static int 2033addErrorCMD(void *cmdp, void *gnp MAKE_ATTR_UNUSED) 2034{ 2035 if (cmdp == NULL) 2036 return 1; /* stop */ 2037 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2038 return 0; 2039} 2040 2041void 2042PrintOnError(GNode *gn, const char *s) 2043{ 2044 static GNode *en = NULL; 2045 char tmp[64]; 2046 char *cp; 2047 2048 if (s) 2049 printf("%s", s); 2050 2051 printf("\n%s: stopped in %s\n", progname, curdir); 2052 2053 if (en) 2054 return; /* we've been here! */ 2055 if (gn) { 2056 /* 2057 * We can print this even if there is no .ERROR target. 2058 */ 2059 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 2060 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2061 Lst_ForEach(gn->commands, addErrorCMD, gn); 2062 } 2063 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2064 sizeof(tmp) - 1); 2065 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2066 if (cp) { 2067 if (*cp) 2068 printf("%s", cp); 2069 free(cp); 2070 } 2071 fflush(stdout); 2072 2073 /* 2074 * Finally, see if there is a .ERROR target, and run it if so. 2075 */ 2076 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2077 if (en) { 2078 en->type |= OP_SPECIAL; 2079 Compat_Make(en, en); 2080 } 2081} 2082 2083void 2084Main_ExportMAKEFLAGS(Boolean first) 2085{ 2086 static int once = 1; 2087 char tmp[64]; 2088 char *s; 2089 2090 if (once != first) 2091 return; 2092 once = 0; 2093 2094 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2095 sizeof(tmp)); 2096 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 2097 if (s && *s) { 2098#ifdef POSIX 2099 setenv("MAKEFLAGS", s, 1); 2100#else 2101 setenv("MAKE", s, 1); 2102#endif 2103 } 2104} 2105 2106char * 2107getTmpdir(void) 2108{ 2109 static char *tmpdir = NULL; 2110 2111 if (!tmpdir) { 2112 struct stat st; 2113 2114 /* 2115 * Honor $TMPDIR but only if it is valid. 2116 * Ensure it ends with /. 2117 */ 2118 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2119 VARF_WANTRES); 2120 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2121 free(tmpdir); 2122 tmpdir = bmake_strdup(_PATH_TMP); 2123 } 2124 } 2125 return tmpdir; 2126} 2127 2128/* 2129 * Create and open a temp file using "pattern". 2130 * If "fnamep" is provided set it to a copy of the filename created. 2131 * Otherwise unlink the file once open. 2132 */ 2133int 2134mkTempFile(const char *pattern, char **fnamep) 2135{ 2136 static char *tmpdir = NULL; 2137 char tfile[MAXPATHLEN]; 2138 int fd; 2139 2140 if (!pattern) 2141 pattern = TMPPAT; 2142 if (!tmpdir) 2143 tmpdir = getTmpdir(); 2144 if (pattern[0] == '/') { 2145 snprintf(tfile, sizeof(tfile), "%s", pattern); 2146 } else { 2147 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2148 } 2149 if ((fd = mkstemp(tfile)) < 0) 2150 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2151 if (fnamep) { 2152 *fnamep = bmake_strdup(tfile); 2153 } else { 2154 unlink(tfile); /* we just want the descriptor */ 2155 } 2156 return fd; 2157} 2158 2159/* 2160 * Convert a string representation of a boolean. 2161 * Anything that looks like "No", "False", "Off", "0" etc, 2162 * is FALSE, otherwise TRUE. 2163 */ 2164Boolean 2165s2Boolean(const char *s, Boolean bf) 2166{ 2167 if (s) { 2168 switch(*s) { 2169 case '\0': /* not set - the default wins */ 2170 break; 2171 case '0': 2172 case 'F': 2173 case 'f': 2174 case 'N': 2175 case 'n': 2176 bf = FALSE; 2177 break; 2178 case 'O': 2179 case 'o': 2180 switch (s[1]) { 2181 case 'F': 2182 case 'f': 2183 bf = FALSE; 2184 break; 2185 default: 2186 bf = TRUE; 2187 break; 2188 } 2189 break; 2190 default: 2191 bf = TRUE; 2192 break; 2193 } 2194 } 2195 return (bf); 2196} 2197 2198/* 2199 * Return a Boolean based on setting of a knob. 2200 * 2201 * If the knob is not set, the supplied default is the return value. 2202 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2203 * is FALSE, otherwise TRUE. 2204 */ 2205Boolean 2206getBoolean(const char *name, Boolean bf) 2207{ 2208 char tmp[64]; 2209 char *cp; 2210 2211 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2212 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2213 2214 if (cp) { 2215 bf = s2Boolean(cp, bf); 2216 free(cp); 2217 } 2218 } 2219 return (bf); 2220} 2221