1 /* $NetBSD: main.c,v 1.279 2020/07/03 08:13:23 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 1.279 2020/07/03 08:13:23 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 1.279 2020/07/03 08:13:23 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 <errno.h> 128 #include <signal.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 #include <ctype.h> 134 135 #include "make.h" 136 #include "hash.h" 137 #include "dir.h" 138 #include "job.h" 139 #include "pathnames.h" 140 #include "trace.h" 141 142 #ifdef USE_IOVEC 143 #include <sys/uio.h> 144 #endif 145 146 #ifndef DEFMAXLOCAL 147 #define DEFMAXLOCAL DEFMAXJOBS 148 #endif /* DEFMAXLOCAL */ 149 150 #ifndef __arraycount 151 # define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) 152 #endif 153 154 Lst create; /* Targets to be made */ 155 time_t now; /* Time at start of make */ 156 GNode *DEFAULT; /* .DEFAULT node */ 157 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 158 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 159 160 static Boolean noBuiltins; /* -r flag */ 161 static Lst makefiles; /* ordered list of makefiles to read */ 162 static int printVars; /* -[vV] argument */ 163 #define COMPAT_VARS 1 164 #define EXPAND_VARS 2 165 static Lst variables; /* list of variables to print */ 166 int maxJobs; /* -j argument */ 167 static int maxJobTokens; /* -j argument */ 168 Boolean compatMake; /* -B argument */ 169 int debug; /* -d argument */ 170 Boolean debugVflag; /* -dV */ 171 Boolean noExecute; /* -n flag */ 172 Boolean noRecursiveExecute; /* -N flag */ 173 Boolean keepgoing; /* -k flag */ 174 Boolean queryFlag; /* -q flag */ 175 Boolean touchFlag; /* -t flag */ 176 Boolean enterFlag; /* -w flag */ 177 Boolean enterFlagObj; /* -w and objdir != srcdir */ 178 Boolean ignoreErrors; /* -i flag */ 179 Boolean beSilent; /* -s flag */ 180 Boolean oldVars; /* variable substitution style */ 181 Boolean checkEnvFirst; /* -e flag */ 182 Boolean parseWarnFatal; /* -W flag */ 183 Boolean jobServer; /* -J flag */ 184 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 185 Boolean varNoExportEnv; /* -X flag */ 186 Boolean doing_depend; /* Set while reading .depend */ 187 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 188 static const char * tracefile; 189 static void MainParseArgs(int, char **); 190 static int ReadMakefile(const void *, const void *); 191 static void usage(void) MAKE_ATTR_DEAD; 192 static void purge_cached_realpaths(void); 193 194 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 195 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 196 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 197 char *progname; /* the program name */ 198 char *makeDependfile; 199 pid_t myPid; 200 int makelevel; 201 202 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; 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 'j': 295 debug |= DEBUG_JOB; 296 break; 297 case 'l': 298 debug |= DEBUG_LOUD; 299 break; 300 case 'M': 301 debug |= DEBUG_META; 302 break; 303 case 'm': 304 debug |= DEBUG_MAKE; 305 break; 306 case 'n': 307 debug |= DEBUG_SCRIPT; 308 break; 309 case 'p': 310 debug |= DEBUG_PARSE; 311 break; 312 case 's': 313 debug |= DEBUG_SUFF; 314 break; 315 case 't': 316 debug |= DEBUG_TARG; 317 break; 318 case 'V': 319 debugVflag = TRUE; 320 break; 321 case 'v': 322 debug |= DEBUG_VAR; 323 break; 324 case 'x': 325 debug |= DEBUG_SHELL; 326 break; 327 case 'F': 328 if (debug_file != stdout && debug_file != stderr) 329 fclose(debug_file); 330 if (*++modules == '+') { 331 modules++; 332 mode = "a"; 333 } else 334 mode = "w"; 335 if (strcmp(modules, "stdout") == 0) { 336 debug_file = stdout; 337 goto debug_setbuf; 338 } 339 if (strcmp(modules, "stderr") == 0) { 340 debug_file = stderr; 341 goto debug_setbuf; 342 } 343 len = strlen(modules); 344 fname = bmake_malloc(len + 20); 345 memcpy(fname, modules, len + 1); 346 /* Let the filename be modified by the pid */ 347 if (strcmp(fname + len - 3, ".%d") == 0) 348 snprintf(fname + len - 2, 20, "%d", getpid()); 349 debug_file = fopen(fname, mode); 350 if (!debug_file) { 351 fprintf(stderr, "Cannot open debug file %s\n", 352 fname); 353 usage(); 354 } 355 free(fname); 356 goto debug_setbuf; 357 default: 358 (void)fprintf(stderr, 359 "%s: illegal argument to d option -- %c\n", 360 progname, *modules); 361 usage(); 362 } 363 } 364 debug_setbuf: 365 /* 366 * Make the debug_file unbuffered, and make 367 * stdout line buffered (unless debugfile == stdout). 368 */ 369 setvbuf(debug_file, NULL, _IONBF, 0); 370 if (debug_file != stdout) { 371 setvbuf(stdout, NULL, _IOLBF, 0); 372 } 373 } 374 375 /* 376 * does path contain any relative components 377 */ 378 static int 379 is_relpath(const char *path) 380 { 381 const char *cp; 382 383 if (path[0] != '/') 384 return TRUE; 385 cp = path; 386 do { 387 cp = strstr(cp, "/."); 388 if (!cp) 389 break; 390 cp += 2; 391 if (cp[0] == '/' || cp[0] == '\0') 392 return TRUE; 393 else if (cp[0] == '.') { 394 if (cp[1] == '/' || cp[1] == '\0') 395 return TRUE; 396 } 397 } while (cp); 398 return FALSE; 399 } 400 401 /*- 402 * MainParseArgs -- 403 * Parse a given argument vector. Called from main() and from 404 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 405 * 406 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 407 * 408 * Results: 409 * None 410 * 411 * Side Effects: 412 * Various global and local flags will be set depending on the flags 413 * given 414 */ 415 static void 416 MainParseArgs(int argc, char **argv) 417 { 418 char *p; 419 int c = '?'; 420 int arginc; 421 char *argvalue; 422 const char *getopt_def; 423 struct stat sa, sb; 424 char *optscan; 425 Boolean inOption, dashDash = FALSE; 426 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 427 428 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w" 429 /* Can't actually use getopt(3) because rescanning is not portable */ 430 431 getopt_def = OPTFLAGS; 432 rearg: 433 inOption = FALSE; 434 optscan = NULL; 435 while(argc > 1) { 436 char *getopt_spec; 437 if(!inOption) 438 optscan = argv[1]; 439 c = *optscan++; 440 arginc = 0; 441 if(inOption) { 442 if(c == '\0') { 443 ++argv; 444 --argc; 445 inOption = FALSE; 446 continue; 447 } 448 } else { 449 if (c != '-' || dashDash) 450 break; 451 inOption = TRUE; 452 c = *optscan++; 453 } 454 /* '-' found at some earlier point */ 455 getopt_spec = strchr(getopt_def, c); 456 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 457 /* -<something> found, and <something> should have an arg */ 458 inOption = FALSE; 459 arginc = 1; 460 argvalue = optscan; 461 if(*argvalue == '\0') { 462 if (argc < 3) 463 goto noarg; 464 argvalue = argv[2]; 465 arginc = 2; 466 } 467 } else { 468 argvalue = NULL; 469 } 470 switch(c) { 471 case '\0': 472 arginc = 1; 473 inOption = FALSE; 474 break; 475 case 'B': 476 compatMake = TRUE; 477 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 478 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 479 break; 480 case 'C': 481 if (chdir(argvalue) == -1) { 482 (void)fprintf(stderr, 483 "%s: chdir %s: %s\n", 484 progname, argvalue, 485 strerror(errno)); 486 exit(1); 487 } 488 if (getcwd(curdir, MAXPATHLEN) == NULL) { 489 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 490 exit(2); 491 } 492 if (!is_relpath(argvalue) && 493 stat(argvalue, &sa) != -1 && 494 stat(curdir, &sb) != -1 && 495 sa.st_ino == sb.st_ino && 496 sa.st_dev == sb.st_dev) 497 strncpy(curdir, argvalue, MAXPATHLEN); 498 ignorePWD = TRUE; 499 break; 500 case 'D': 501 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 502 Var_Set(argvalue, "1", VAR_GLOBAL); 503 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 504 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 505 break; 506 case 'I': 507 if (argvalue == NULL) goto noarg; 508 Parse_AddIncludeDir(argvalue); 509 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 510 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 511 break; 512 case 'J': 513 if (argvalue == NULL) goto noarg; 514 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 515 (void)fprintf(stderr, 516 "%s: internal error -- J option malformed (%s)\n", 517 progname, argvalue); 518 usage(); 519 } 520 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 521 (fcntl(jp_1, F_GETFD, 0) < 0)) { 522 #if 0 523 (void)fprintf(stderr, 524 "%s: ###### warning -- J descriptors were closed!\n", 525 progname); 526 exit(2); 527 #endif 528 jp_0 = -1; 529 jp_1 = -1; 530 compatMake = TRUE; 531 } else { 532 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 533 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 534 jobServer = TRUE; 535 } 536 break; 537 case 'N': 538 noExecute = TRUE; 539 noRecursiveExecute = TRUE; 540 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 541 break; 542 case 'S': 543 keepgoing = FALSE; 544 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 545 break; 546 case 'T': 547 if (argvalue == NULL) goto noarg; 548 tracefile = bmake_strdup(argvalue); 549 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 550 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 551 break; 552 case 'V': 553 case 'v': 554 if (argvalue == NULL) goto noarg; 555 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 556 (void)Lst_AtEnd(variables, argvalue); 557 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 558 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 559 break; 560 case 'W': 561 parseWarnFatal = TRUE; 562 break; 563 case 'X': 564 varNoExportEnv = TRUE; 565 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 566 break; 567 case 'd': 568 if (argvalue == NULL) goto noarg; 569 /* If '-d-opts' don't pass to children */ 570 if (argvalue[0] == '-') 571 argvalue++; 572 else { 573 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 574 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 575 } 576 parse_debug_options(argvalue); 577 break; 578 case 'e': 579 checkEnvFirst = TRUE; 580 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 581 break; 582 case 'f': 583 if (argvalue == NULL) goto noarg; 584 (void)Lst_AtEnd(makefiles, argvalue); 585 break; 586 case 'i': 587 ignoreErrors = TRUE; 588 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 589 break; 590 case 'j': 591 if (argvalue == NULL) goto noarg; 592 forceJobs = TRUE; 593 maxJobs = strtol(argvalue, &p, 0); 594 if (*p != '\0' || maxJobs < 1) { 595 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 596 progname); 597 exit(1); 598 } 599 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 600 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 601 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 602 maxJobTokens = maxJobs; 603 break; 604 case 'k': 605 keepgoing = TRUE; 606 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 607 break; 608 case 'm': 609 if (argvalue == NULL) goto noarg; 610 /* look for magic parent directory search string */ 611 if (strncmp(".../", argvalue, 4) == 0) { 612 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 613 found_path, sizeof(found_path))) 614 break; /* nothing doing */ 615 (void)Dir_AddDir(sysIncPath, found_path); 616 } else { 617 (void)Dir_AddDir(sysIncPath, argvalue); 618 } 619 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 620 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 621 break; 622 case 'n': 623 noExecute = TRUE; 624 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 625 break; 626 case 'q': 627 queryFlag = TRUE; 628 /* Kind of nonsensical, wot? */ 629 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 630 break; 631 case 'r': 632 noBuiltins = TRUE; 633 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 634 break; 635 case 's': 636 beSilent = TRUE; 637 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 638 break; 639 case 't': 640 touchFlag = TRUE; 641 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 642 break; 643 case 'w': 644 enterFlag = TRUE; 645 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 646 break; 647 case '-': 648 dashDash = TRUE; 649 break; 650 default: 651 case '?': 652 #ifndef MAKE_NATIVE 653 fprintf(stderr, "getopt(%s) -> %d (%c)\n", 654 OPTFLAGS, c, c); 655 #endif 656 usage(); 657 } 658 argv += arginc; 659 argc -= arginc; 660 } 661 662 oldVars = TRUE; 663 664 /* 665 * See if the rest of the arguments are variable assignments and 666 * perform them if so. Else take them to be targets and stuff them 667 * on the end of the "create" list. 668 */ 669 for (; argc > 1; ++argv, --argc) 670 if (Parse_IsVar(argv[1])) { 671 Parse_DoVar(argv[1], VAR_CMD); 672 } else { 673 if (!*argv[1]) 674 Punt("illegal (null) argument."); 675 if (*argv[1] == '-' && !dashDash) 676 goto rearg; 677 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 678 } 679 680 return; 681 noarg: 682 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 683 progname, c); 684 usage(); 685 } 686 687 /*- 688 * Main_ParseArgLine -- 689 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 690 * is encountered and by main() when reading the .MAKEFLAGS envariable. 691 * Takes a line of arguments and breaks it into its 692 * component words and passes those words and the number of them to the 693 * MainParseArgs function. 694 * The line should have all its leading whitespace removed. 695 * 696 * Input: 697 * line Line to fracture 698 * 699 * Results: 700 * None 701 * 702 * Side Effects: 703 * Only those that come from the various arguments. 704 */ 705 void 706 Main_ParseArgLine(const char *line) 707 { 708 char **argv; /* Manufactured argument vector */ 709 int argc; /* Number of arguments in argv */ 710 char *args; /* Space used by the args */ 711 char *buf, *p1; 712 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 713 size_t len; 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 * $MAKE may simply be naming the make(1) binary 726 */ 727 char *cp; 728 729 if (!(cp = strrchr(line, '/'))) 730 cp = line; 731 if ((cp = strstr(cp, "make")) && 732 strcmp(cp, "make") == 0) 733 return; 734 } 735 #endif 736 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 737 (void)snprintf(buf, len, "%s %s", argv0, line); 738 free(p1); 739 740 argv = brk_string(buf, &argc, TRUE, &args); 741 if (argv == NULL) { 742 Error("Unterminated quoted string [%s]", buf); 743 free(buf); 744 return; 745 } 746 free(buf); 747 MainParseArgs(argc, argv); 748 749 free(args); 750 free(argv); 751 } 752 753 Boolean 754 Main_SetObjdir(const char *fmt, ...) 755 { 756 struct stat sb; 757 char *path; 758 char buf[MAXPATHLEN + 1]; 759 char buf2[MAXPATHLEN + 1]; 760 Boolean rc = FALSE; 761 va_list ap; 762 763 va_start(ap, fmt); 764 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 765 va_end(ap); 766 767 if (path[0] != '/') { 768 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 769 path = buf2; 770 } 771 772 /* look for the directory and try to chdir there */ 773 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 774 if (chdir(path)) { 775 (void)fprintf(stderr, "make warning: %s: %s.\n", 776 path, strerror(errno)); 777 } else { 778 strncpy(objdir, path, MAXPATHLEN); 779 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 780 setenv("PWD", objdir, 1); 781 Dir_InitDot(); 782 purge_cached_realpaths(); 783 rc = TRUE; 784 if (enterFlag && strcmp(objdir, curdir) != 0) 785 enterFlagObj = TRUE; 786 } 787 } 788 789 return rc; 790 } 791 792 static Boolean 793 Main_SetVarObjdir(const char *var, const char *suffix) 794 { 795 char *p, *path, *xpath; 796 797 if ((path = Var_Value(var, VAR_CMD, &p)) == NULL || 798 *path == '\0') 799 return FALSE; 800 801 /* expand variable substitutions */ 802 if (strchr(path, '$') != 0) 803 xpath = Var_Subst(NULL, path, VAR_GLOBAL, VARF_WANTRES); 804 else 805 xpath = path; 806 807 (void)Main_SetObjdir("%s%s", xpath, suffix); 808 809 if (xpath != path) 810 free(xpath); 811 free(p); 812 return TRUE; 813 } 814 815 /*- 816 * ReadAllMakefiles -- 817 * wrapper around ReadMakefile() to read all. 818 * 819 * Results: 820 * TRUE if ok, FALSE on error 821 */ 822 static int 823 ReadAllMakefiles(const void *p, const void *q) 824 { 825 return ReadMakefile(p, q) == 0; 826 } 827 828 int 829 str2Lst_Append(Lst lp, char *str, const char *sep) 830 { 831 char *cp; 832 int n; 833 834 if (!sep) 835 sep = " \t"; 836 837 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 838 (void)Lst_AtEnd(lp, cp); 839 n++; 840 } 841 return n; 842 } 843 844 #ifdef SIGINFO 845 /*ARGSUSED*/ 846 static void 847 siginfo(int signo MAKE_ATTR_UNUSED) 848 { 849 char dir[MAXPATHLEN]; 850 char str[2 * MAXPATHLEN]; 851 int len; 852 if (getcwd(dir, sizeof(dir)) == NULL) 853 return; 854 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 855 if (len > 0) 856 (void)write(STDERR_FILENO, str, (size_t)len); 857 } 858 #endif 859 860 /* 861 * Allow makefiles some control over the mode we run in. 862 */ 863 void 864 MakeMode(const char *mode) 865 { 866 char *mp = NULL; 867 868 if (!mode) 869 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 870 VAR_GLOBAL, VARF_WANTRES); 871 872 if (mode && *mode) { 873 if (strstr(mode, "compat")) { 874 compatMake = TRUE; 875 forceJobs = FALSE; 876 } 877 #if USE_META 878 if (strstr(mode, "meta")) 879 meta_mode_init(mode); 880 #endif 881 } 882 883 free(mp); 884 } 885 886 static void 887 doPrintVars(void) 888 { 889 LstNode ln; 890 Boolean expandVars; 891 892 if (printVars == EXPAND_VARS) 893 expandVars = TRUE; 894 else if (debugVflag) 895 expandVars = FALSE; 896 else 897 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 898 899 for (ln = Lst_First(variables); ln != NULL; 900 ln = Lst_Succ(ln)) { 901 char *var = (char *)Lst_Datum(ln); 902 char *value; 903 char *p1; 904 905 if (strchr(var, '$')) { 906 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 907 VARF_WANTRES); 908 } else if (expandVars) { 909 char tmp[128]; 910 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 911 912 if (len >= (int)sizeof(tmp)) 913 Fatal("%s: variable name too big: %s", 914 progname, var); 915 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 916 VARF_WANTRES); 917 } else { 918 value = Var_Value(var, VAR_GLOBAL, &p1); 919 } 920 printf("%s\n", value ? value : ""); 921 free(p1); 922 } 923 } 924 925 static Boolean 926 runTargets(void) 927 { 928 Lst targs; /* target nodes to create -- passed to Make_Init */ 929 Boolean outOfDate; /* FALSE if all targets up to date */ 930 931 /* 932 * Have now read the entire graph and need to make a list of 933 * targets to create. If none was given on the command line, 934 * we consult the parsing module to find the main target(s) 935 * to create. 936 */ 937 if (Lst_IsEmpty(create)) 938 targs = Parse_MainName(); 939 else 940 targs = Targ_FindList(create, TARG_CREATE); 941 942 if (!compatMake) { 943 /* 944 * Initialize job module before traversing the graph 945 * now that any .BEGIN and .END targets have been read. 946 * This is done only if the -q flag wasn't given 947 * (to prevent the .BEGIN from being executed should 948 * it exist). 949 */ 950 if (!queryFlag) { 951 Job_Init(); 952 jobsRunning = TRUE; 953 } 954 955 /* Traverse the graph, checking on all the targets */ 956 outOfDate = Make_Run(targs); 957 } else { 958 /* 959 * Compat_Init will take care of creating all the 960 * targets as well as initializing the module. 961 */ 962 Compat_Run(targs); 963 outOfDate = FALSE; 964 } 965 Lst_Destroy(targs, NULL); 966 return outOfDate; 967 } 968 969 /*- 970 * main -- 971 * The main function, for obvious reasons. Initializes variables 972 * and a few modules, then parses the arguments give it in the 973 * environment and on the command line. Reads the system makefile 974 * followed by either Makefile, makefile or the file given by the 975 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 976 * flags it has received by then uses either the Make or the Compat 977 * module to create the initial list of targets. 978 * 979 * Results: 980 * If -q was given, exits -1 if anything was out-of-date. Else it exits 981 * 0. 982 * 983 * Side Effects: 984 * The program exits when done. Targets are created. etc. etc. etc. 985 */ 986 int 987 main(int argc, char **argv) 988 { 989 Boolean outOfDate; /* FALSE if all targets up to date */ 990 struct stat sb, sa; 991 char *p1, *path; 992 char mdpath[MAXPATHLEN]; 993 #ifdef FORCE_MACHINE 994 const char *machine = FORCE_MACHINE; 995 #else 996 const char *machine = getenv("MACHINE"); 997 #endif 998 const char *machine_arch = getenv("MACHINE_ARCH"); 999 char *syspath = getenv("MAKESYSPATH"); 1000 Lst sysMkPath; /* Path of sys.mk */ 1001 char *cp = NULL, *start; 1002 /* avoid faults on read-only strings */ 1003 static char defsyspath[] = _PATH_DEFSYSPATH; 1004 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 1005 struct timeval rightnow; /* to initialize random seed */ 1006 struct utsname utsname; 1007 1008 /* default to writing debug to stderr */ 1009 debug_file = stderr; 1010 1011 #ifdef SIGINFO 1012 (void)bmake_signal(SIGINFO, siginfo); 1013 #endif 1014 /* 1015 * Set the seed to produce a different random sequence 1016 * on each program execution. 1017 */ 1018 gettimeofday(&rightnow, NULL); 1019 srandom(rightnow.tv_sec + rightnow.tv_usec); 1020 1021 if ((progname = strrchr(argv[0], '/')) != NULL) 1022 progname++; 1023 else 1024 progname = argv[0]; 1025 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1026 /* 1027 * get rid of resource limit on file descriptors 1028 */ 1029 { 1030 struct rlimit rl; 1031 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1032 rl.rlim_cur != rl.rlim_max) { 1033 rl.rlim_cur = rl.rlim_max; 1034 (void)setrlimit(RLIMIT_NOFILE, &rl); 1035 } 1036 } 1037 #endif 1038 1039 if (uname(&utsname) == -1) { 1040 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1041 strerror(errno)); 1042 exit(2); 1043 } 1044 1045 /* 1046 * Get the name of this type of MACHINE from utsname 1047 * so we can share an executable for similar machines. 1048 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1049 * 1050 * Note that both MACHINE and MACHINE_ARCH are decided at 1051 * run-time. 1052 */ 1053 if (!machine) { 1054 #ifdef MAKE_NATIVE 1055 machine = utsname.machine; 1056 #else 1057 #ifdef MAKE_MACHINE 1058 machine = MAKE_MACHINE; 1059 #else 1060 machine = "unknown"; 1061 #endif 1062 #endif 1063 } 1064 1065 if (!machine_arch) { 1066 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH) 1067 static char machine_arch_buf[sizeof(utsname.machine)]; 1068 int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1069 size_t len = sizeof(machine_arch_buf); 1070 1071 if (sysctl(__DECONST(int *, mib) /* XXX */, __arraycount(mib), machine_arch_buf, 1072 &len, NULL, 0) < 0) { 1073 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1074 strerror(errno)); 1075 exit(2); 1076 } 1077 1078 machine_arch = machine_arch_buf; 1079 #else 1080 #ifndef MACHINE_ARCH 1081 #ifdef MAKE_MACHINE_ARCH 1082 machine_arch = MAKE_MACHINE_ARCH; 1083 #else 1084 machine_arch = "unknown"; 1085 #endif 1086 #else 1087 machine_arch = MACHINE_ARCH; 1088 #endif 1089 #endif 1090 } 1091 1092 myPid = getpid(); /* remember this for vFork() */ 1093 1094 /* 1095 * Just in case MAKEOBJDIR wants us to do something tricky. 1096 */ 1097 Var_Init(); /* Initialize the lists of variables for 1098 * parsing arguments */ 1099 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1100 Var_Set("MACHINE", machine, VAR_GLOBAL); 1101 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1102 #ifdef MAKE_VERSION 1103 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1104 #endif 1105 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1106 /* 1107 * This is the traditional preference for makefiles. 1108 */ 1109 #ifndef MAKEFILE_PREFERENCE_LIST 1110 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1111 #endif 1112 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1113 VAR_GLOBAL); 1114 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1115 1116 create = Lst_Init(FALSE); 1117 makefiles = Lst_Init(FALSE); 1118 printVars = 0; 1119 debugVflag = FALSE; 1120 variables = Lst_Init(FALSE); 1121 beSilent = FALSE; /* Print commands as executed */ 1122 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1123 noExecute = FALSE; /* Execute all commands */ 1124 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1125 keepgoing = FALSE; /* Stop on error */ 1126 allPrecious = FALSE; /* Remove targets when interrupted */ 1127 deleteOnError = FALSE; /* Historical default behavior */ 1128 queryFlag = FALSE; /* This is not just a check-run */ 1129 noBuiltins = FALSE; /* Read the built-in rules */ 1130 touchFlag = FALSE; /* Actually update targets */ 1131 debug = 0; /* No debug verbosity, please. */ 1132 jobsRunning = FALSE; 1133 1134 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1135 maxJobTokens = maxJobs; 1136 compatMake = FALSE; /* No compat mode */ 1137 ignorePWD = FALSE; 1138 1139 /* 1140 * Initialize the parsing, directory and variable modules to prepare 1141 * for the reading of inclusion paths and variable settings on the 1142 * command line 1143 */ 1144 1145 /* 1146 * Initialize various variables. 1147 * MAKE also gets this name, for compatibility 1148 * .MAKEFLAGS gets set to the empty string just in case. 1149 * MFLAGS also gets initialized empty, for compatibility. 1150 */ 1151 Parse_Init(); 1152 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1153 /* 1154 * Leave alone if it is an absolute path, or if it does 1155 * not contain a '/' in which case we need to find it in 1156 * the path, like execvp(3) and the shells do. 1157 */ 1158 p1 = argv[0]; 1159 } else { 1160 /* 1161 * A relative path, canonicalize it. 1162 */ 1163 p1 = cached_realpath(argv[0], mdpath); 1164 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1165 p1 = argv[0]; /* realpath failed */ 1166 } 1167 } 1168 Var_Set("MAKE", p1, VAR_GLOBAL); 1169 Var_Set(".MAKE", p1, VAR_GLOBAL); 1170 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1171 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1172 Var_Set("MFLAGS", "", VAR_GLOBAL); 1173 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1174 /* some makefiles need to know this */ 1175 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1176 1177 /* 1178 * Set some other useful macros 1179 */ 1180 { 1181 char tmp[64], *ep; 1182 1183 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1184 if (makelevel < 0) 1185 makelevel = 0; 1186 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1187 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1188 snprintf(tmp, sizeof(tmp), "%u", myPid); 1189 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1190 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1191 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1192 Var_Set(".MAKE.BUILT.BY", CCVER, VAR_GLOBAL); 1193 Var_Set(".MAKE.DF.VERSION", DFVER, VAR_GLOBAL); 1194 Var_Set(".MAKE.DF.OSREL", OSREL, VAR_GLOBAL); 1195 } 1196 if (makelevel > 0) { 1197 char pn[1024]; 1198 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1199 progname = bmake_strdup(pn); 1200 } 1201 1202 #ifdef USE_META 1203 meta_init(); 1204 #endif 1205 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1206 1207 /* 1208 * First snag any flags out of the MAKE environment variable. 1209 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1210 * in a different format). 1211 */ 1212 #ifdef POSIX 1213 p1 = explode(getenv("MAKEFLAGS")); 1214 Main_ParseArgLine(p1); 1215 free(p1); 1216 #else 1217 Main_ParseArgLine(getenv("MAKE")); 1218 #endif 1219 1220 /* 1221 * Find where we are (now). 1222 * We take care of PWD for the automounter below... 1223 */ 1224 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1225 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1226 progname, strerror(errno)); 1227 exit(2); 1228 } 1229 1230 MainParseArgs(argc, argv); 1231 1232 if (enterFlag) 1233 printf("%s: Entering directory `%s'\n", progname, curdir); 1234 1235 /* 1236 * Verify that cwd is sane. 1237 */ 1238 if (stat(curdir, &sa) == -1) { 1239 (void)fprintf(stderr, "%s: %s: %s.\n", 1240 progname, curdir, strerror(errno)); 1241 exit(2); 1242 } 1243 1244 /* 1245 * All this code is so that we know where we are when we start up 1246 * on a different machine with pmake. 1247 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1248 * since the value of curdir can vary depending on how we got 1249 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1250 * or via subdir.mk in which case its likely a shell which does 1251 * not provide it. 1252 * So, to stop it breaking this case only, we ignore PWD if 1253 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1254 */ 1255 #ifndef NO_PWD_OVERRIDE 1256 if (!ignorePWD) { 1257 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1258 1259 if ((pwd = getenv("PWD")) != NULL && 1260 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1261 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1262 VAR_CMD, &ptmp2); 1263 1264 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1265 if (stat(pwd, &sb) == 0 && 1266 sa.st_ino == sb.st_ino && 1267 sa.st_dev == sb.st_dev) 1268 (void)strncpy(curdir, pwd, MAXPATHLEN); 1269 } 1270 } 1271 free(ptmp1); 1272 free(ptmp2); 1273 } 1274 #endif 1275 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1276 1277 /* 1278 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1279 * MAKEOBJDIR is set in the environment, try only that value 1280 * and fall back to .CURDIR if it does not exist. 1281 * 1282 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1283 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1284 * of these paths exist, just use .CURDIR. 1285 */ 1286 Dir_Init(curdir); 1287 (void)Main_SetObjdir("%s", curdir); 1288 1289 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1290 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1291 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1292 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1293 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1294 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1295 1296 /* 1297 * Initialize archive, target and suffix modules in preparation for 1298 * parsing the makefile(s) 1299 */ 1300 Arch_Init(); 1301 Targ_Init(); 1302 Suff_Init(); 1303 Trace_Init(tracefile); 1304 1305 DEFAULT = NULL; 1306 (void)time(&now); 1307 1308 Trace_Log(MAKESTART, NULL); 1309 1310 /* 1311 * Set up the .TARGETS variable to contain the list of targets to be 1312 * created. If none specified, make the variable empty -- the parser 1313 * will fill the thing in with the default or .MAIN target. 1314 */ 1315 if (!Lst_IsEmpty(create)) { 1316 LstNode ln; 1317 1318 for (ln = Lst_First(create); ln != NULL; 1319 ln = Lst_Succ(ln)) { 1320 char *name = (char *)Lst_Datum(ln); 1321 1322 Var_Append(".TARGETS", name, VAR_GLOBAL); 1323 } 1324 } else 1325 Var_Set(".TARGETS", "", VAR_GLOBAL); 1326 1327 1328 /* 1329 * If no user-supplied system path was given (through the -m option) 1330 * add the directories from the DEFSYSPATH (more than one may be given 1331 * as dir1:...:dirn) to the system include path. 1332 */ 1333 if (syspath == NULL || *syspath == '\0') 1334 syspath = defsyspath; 1335 else 1336 syspath = bmake_strdup(syspath); 1337 1338 for (start = syspath; *start != '\0'; start = cp) { 1339 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1340 continue; 1341 if (*cp == ':') { 1342 *cp++ = '\0'; 1343 } 1344 /* look for magic parent directory search string */ 1345 if (strncmp(".../", start, 4) != 0) { 1346 (void)Dir_AddDir(defIncPath, start); 1347 } else { 1348 if (Dir_FindHereOrAbove(curdir, start+4, 1349 found_path, sizeof(found_path))) { 1350 (void)Dir_AddDir(defIncPath, found_path); 1351 } 1352 } 1353 } 1354 if (syspath != defsyspath) 1355 free(syspath); 1356 1357 /* 1358 * Read in the built-in rules first, followed by the specified 1359 * makefile, if it was (makefile != NULL), or the default 1360 * makefile and Makefile, in that order, if it wasn't. 1361 */ 1362 if (!noBuiltins) { 1363 LstNode ln; 1364 1365 sysMkPath = Lst_Init(FALSE); 1366 Dir_Expand(_PATH_DEFSYSMK, 1367 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1368 sysMkPath); 1369 if (Lst_IsEmpty(sysMkPath)) 1370 Fatal("%s: no system rules (%s).", progname, 1371 _PATH_DEFSYSMK); 1372 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1373 if (ln == NULL) 1374 Fatal("%s: cannot open %s.", progname, 1375 (char *)Lst_Datum(ln)); 1376 } 1377 1378 if (!Lst_IsEmpty(makefiles)) { 1379 LstNode ln; 1380 1381 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1382 if (ln != NULL) 1383 Fatal("%s: cannot open %s.", progname, 1384 (char *)Lst_Datum(ln)); 1385 } else { 1386 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1387 VAR_CMD, VARF_WANTRES); 1388 if (p1) { 1389 (void)str2Lst_Append(makefiles, p1, NULL); 1390 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1391 free(p1); 1392 } 1393 } 1394 1395 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1396 if (!noBuiltins || !printVars) { 1397 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1398 VAR_CMD, VARF_WANTRES); 1399 doing_depend = TRUE; 1400 (void)ReadMakefile(makeDependfile, NULL); 1401 doing_depend = FALSE; 1402 } 1403 1404 if (enterFlagObj) 1405 printf("%s: Entering directory `%s'\n", progname, objdir); 1406 1407 MakeMode(NULL); 1408 1409 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1410 free(p1); 1411 1412 if (!forceJobs && !compatMake && 1413 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1414 char *value; 1415 int n; 1416 1417 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1418 n = strtol(value, NULL, 0); 1419 if (n < 1) { 1420 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1421 progname); 1422 exit(1); 1423 } 1424 if (n != maxJobs) { 1425 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1426 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1427 } 1428 maxJobs = n; 1429 maxJobTokens = maxJobs; 1430 forceJobs = TRUE; 1431 free(value); 1432 } 1433 1434 /* 1435 * Be compatible if user did not specify -j and did not explicitly 1436 * turned compatibility on 1437 */ 1438 if (!compatMake && !forceJobs) { 1439 compatMake = TRUE; 1440 } 1441 1442 if (!compatMake) 1443 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1444 if (DEBUG(JOB)) 1445 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1446 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1447 1448 if (!printVars) 1449 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1450 1451 1452 /* 1453 * For compatibility, look at the directories in the VPATH variable 1454 * and add them to the search path, if the variable is defined. The 1455 * variable's value is in the same format as the PATH envariable, i.e. 1456 * <directory>:<directory>:<directory>... 1457 */ 1458 if (Var_Exists("VPATH", VAR_CMD)) { 1459 char *vpath, savec; 1460 /* 1461 * GCC stores string constants in read-only memory, but 1462 * Var_Subst will want to write this thing, so store it 1463 * in an array 1464 */ 1465 static char VPATH[] = "${VPATH}"; 1466 1467 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1468 path = vpath; 1469 do { 1470 /* skip to end of directory */ 1471 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1472 continue; 1473 /* Save terminator character so know when to stop */ 1474 savec = *cp; 1475 *cp = '\0'; 1476 /* Add directory to search path */ 1477 (void)Dir_AddDir(dirSearchPath, path); 1478 *cp = savec; 1479 path = cp + 1; 1480 } while (savec == ':'); 1481 free(vpath); 1482 } 1483 1484 /* 1485 * Now that all search paths have been read for suffixes et al, it's 1486 * time to add the default search path to their lists... 1487 */ 1488 Suff_DoPaths(); 1489 1490 /* 1491 * Propagate attributes through :: dependency lists. 1492 */ 1493 Targ_Propagate(); 1494 1495 /* print the initial graph, if the user requested it */ 1496 if (DEBUG(GRAPH1)) 1497 Targ_PrintGraph(1); 1498 1499 /* print the values of any variables requested by the user */ 1500 if (printVars) { 1501 doPrintVars(); 1502 outOfDate = FALSE; 1503 } else { 1504 outOfDate = runTargets(); 1505 } 1506 1507 #ifdef CLEANUP 1508 Lst_Destroy(variables, NULL); 1509 Lst_Destroy(makefiles, NULL); 1510 Lst_Destroy(create, (FreeProc *)free); 1511 #endif 1512 1513 /* print the graph now it's been processed if the user requested it */ 1514 if (DEBUG(GRAPH2)) 1515 Targ_PrintGraph(2); 1516 1517 Trace_Log(MAKEEND, 0); 1518 1519 if (enterFlagObj) 1520 printf("%s: Leaving directory `%s'\n", progname, objdir); 1521 if (enterFlag) 1522 printf("%s: Leaving directory `%s'\n", progname, curdir); 1523 1524 #ifdef USE_META 1525 meta_finish(); 1526 #endif 1527 Suff_End(); 1528 Targ_End(); 1529 Arch_End(); 1530 Var_End(); 1531 Parse_End(); 1532 Dir_End(); 1533 Job_End(); 1534 Trace_End(); 1535 1536 return outOfDate ? 1 : 0; 1537 } 1538 1539 /*- 1540 * ReadMakefile -- 1541 * Open and parse the given makefile. 1542 * 1543 * Results: 1544 * 0 if ok. -1 if couldn't open file. 1545 * 1546 * Side Effects: 1547 * lots 1548 */ 1549 static int 1550 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1551 { 1552 const char *fname = p; /* makefile to read */ 1553 int fd; 1554 size_t len = MAXPATHLEN; 1555 char *name, *path = bmake_malloc(len); 1556 1557 if (!strcmp(fname, "-")) { 1558 Parse_File(NULL /*stdin*/, -1); 1559 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1560 } else { 1561 /* if we've chdir'd, rebuild the path name */ 1562 if (strcmp(curdir, objdir) && *fname != '/') { 1563 size_t plen = strlen(curdir) + strlen(fname) + 2; 1564 if (len < plen) 1565 path = bmake_realloc(path, len = 2 * plen); 1566 1567 (void)snprintf(path, len, "%s/%s", curdir, fname); 1568 fd = open(path, O_RDONLY); 1569 if (fd != -1) { 1570 fname = path; 1571 goto found; 1572 } 1573 1574 /* If curdir failed, try objdir (ala .depend) */ 1575 plen = strlen(objdir) + strlen(fname) + 2; 1576 if (len < plen) 1577 path = bmake_realloc(path, len = 2 * plen); 1578 (void)snprintf(path, len, "%s/%s", objdir, fname); 1579 fd = open(path, O_RDONLY); 1580 if (fd != -1) { 1581 fname = path; 1582 goto found; 1583 } 1584 } else { 1585 fd = open(fname, O_RDONLY); 1586 if (fd != -1) 1587 goto found; 1588 } 1589 /* look in -I and system include directories. */ 1590 name = Dir_FindFile(fname, parseIncPath); 1591 if (!name) 1592 name = Dir_FindFile(fname, 1593 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1594 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1595 free(name); 1596 free(path); 1597 return -1; 1598 } 1599 fname = name; 1600 /* 1601 * set the MAKEFILE variable desired by System V fans -- the 1602 * placement of the setting here means it gets set to the last 1603 * makefile specified, as it is set by SysV make. 1604 */ 1605 found: 1606 if (!doing_depend) 1607 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1608 Parse_File(fname, fd); 1609 } 1610 free(path); 1611 return 0; 1612 } 1613 1614 1615 1616 /*- 1617 * Cmd_Exec -- 1618 * Execute the command in cmd, and return the output of that command 1619 * in a string. 1620 * 1621 * Results: 1622 * A string containing the output of the command, or the empty string 1623 * If errnum is not NULL, it contains the reason for the command failure 1624 * 1625 * Side Effects: 1626 * The string must be freed by the caller. 1627 */ 1628 char * 1629 Cmd_Exec(const char *cmd, const char **errnum) 1630 { 1631 const char *args[4]; /* Args for invoking the shell */ 1632 int fds[2]; /* Pipe streams */ 1633 int cpid; /* Child PID */ 1634 int pid; /* PID from wait() */ 1635 char *res; /* result */ 1636 WAIT_T status; /* command exit status */ 1637 Buffer buf; /* buffer to store the result */ 1638 char *cp; 1639 int cc; /* bytes read, or -1 */ 1640 int savederr; /* saved errno */ 1641 1642 1643 *errnum = NULL; 1644 1645 if (!shellName) 1646 Shell_Init(); 1647 /* 1648 * Set up arguments for shell 1649 */ 1650 args[0] = shellName; 1651 args[1] = "-c"; 1652 args[2] = cmd; 1653 args[3] = NULL; 1654 1655 /* 1656 * Open a pipe for fetching its output 1657 */ 1658 if (pipe(fds) == -1) { 1659 *errnum = "Couldn't create pipe for \"%s\""; 1660 goto bad; 1661 } 1662 1663 /* 1664 * Fork 1665 */ 1666 switch (cpid = vFork()) { 1667 case 0: 1668 /* 1669 * Close input side of pipe 1670 */ 1671 (void)close(fds[0]); 1672 1673 /* 1674 * Duplicate the output stream to the shell's output, then 1675 * shut the extra thing down. Note we don't fetch the error 1676 * stream...why not? Why? 1677 */ 1678 (void)dup2(fds[1], 1); 1679 (void)close(fds[1]); 1680 1681 Var_ExportVars(); 1682 1683 (void)execv(shellPath, UNCONST(args)); 1684 _exit(1); 1685 /*NOTREACHED*/ 1686 1687 case -1: 1688 *errnum = "Couldn't exec \"%s\""; 1689 goto bad; 1690 1691 default: 1692 /* 1693 * No need for the writing half 1694 */ 1695 (void)close(fds[1]); 1696 1697 savederr = 0; 1698 Buf_Init(&buf, 0); 1699 1700 do { 1701 char result[BUFSIZ]; 1702 cc = read(fds[0], result, sizeof(result)); 1703 if (cc > 0) 1704 Buf_AddBytes(&buf, cc, result); 1705 } 1706 while (cc > 0 || (cc == -1 && errno == EINTR)); 1707 if (cc == -1) 1708 savederr = errno; 1709 1710 /* 1711 * Close the input side of the pipe. 1712 */ 1713 (void)close(fds[0]); 1714 1715 /* 1716 * Wait for the process to exit. 1717 */ 1718 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1719 JobReapChild(pid, status, FALSE); 1720 continue; 1721 } 1722 cc = Buf_Size(&buf); 1723 res = Buf_Destroy(&buf, FALSE); 1724 1725 if (savederr != 0) 1726 *errnum = "Couldn't read shell's output for \"%s\""; 1727 1728 if (WIFSIGNALED(status)) 1729 *errnum = "\"%s\" exited on a signal"; 1730 else if (WEXITSTATUS(status) != 0) 1731 *errnum = "\"%s\" returned non-zero status"; 1732 1733 /* 1734 * Null-terminate the result, convert newlines to spaces and 1735 * install it in the variable. 1736 */ 1737 res[cc] = '\0'; 1738 cp = &res[cc]; 1739 1740 if (cc > 0 && *--cp == '\n') { 1741 /* 1742 * A final newline is just stripped 1743 */ 1744 *cp-- = '\0'; 1745 } 1746 while (cp >= res) { 1747 if (*cp == '\n') { 1748 *cp = ' '; 1749 } 1750 cp--; 1751 } 1752 break; 1753 } 1754 return res; 1755 bad: 1756 res = bmake_malloc(1); 1757 *res = '\0'; 1758 return res; 1759 } 1760 1761 /*- 1762 * Error -- 1763 * Print an error message given its format. 1764 * 1765 * Results: 1766 * None. 1767 * 1768 * Side Effects: 1769 * The message is printed. 1770 */ 1771 /* VARARGS */ 1772 void 1773 Error(const char *fmt, ...) 1774 { 1775 va_list ap; 1776 FILE *err_file; 1777 1778 err_file = debug_file; 1779 if (err_file == stdout) 1780 err_file = stderr; 1781 (void)fflush(stdout); 1782 for (;;) { 1783 va_start(ap, fmt); 1784 fprintf(err_file, "%s: ", progname); 1785 (void)vfprintf(err_file, fmt, ap); 1786 va_end(ap); 1787 (void)fprintf(err_file, "\n"); 1788 (void)fflush(err_file); 1789 if (err_file == stderr) 1790 break; 1791 err_file = stderr; 1792 } 1793 } 1794 1795 /*- 1796 * Fatal -- 1797 * Produce a Fatal error message. If jobs are running, waits for them 1798 * to finish. 1799 * 1800 * Results: 1801 * None 1802 * 1803 * Side Effects: 1804 * The program exits 1805 */ 1806 /* VARARGS */ 1807 void 1808 Fatal(const char *fmt, ...) 1809 { 1810 va_list ap; 1811 1812 va_start(ap, fmt); 1813 if (jobsRunning) 1814 Job_Wait(); 1815 1816 (void)fflush(stdout); 1817 (void)vfprintf(stderr, fmt, ap); 1818 va_end(ap); 1819 (void)fprintf(stderr, "\n"); 1820 (void)fflush(stderr); 1821 1822 PrintOnError(NULL, NULL); 1823 1824 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1825 Targ_PrintGraph(2); 1826 Trace_Log(MAKEERROR, 0); 1827 exit(2); /* Not 1 so -q can distinguish error */ 1828 } 1829 1830 /* 1831 * Punt -- 1832 * Major exception once jobs are being created. Kills all jobs, prints 1833 * a message and exits. 1834 * 1835 * Results: 1836 * None 1837 * 1838 * Side Effects: 1839 * All children are killed indiscriminately and the program Lib_Exits 1840 */ 1841 /* VARARGS */ 1842 void 1843 Punt(const char *fmt, ...) 1844 { 1845 va_list ap; 1846 1847 va_start(ap, fmt); 1848 (void)fflush(stdout); 1849 (void)fprintf(stderr, "%s: ", progname); 1850 (void)vfprintf(stderr, fmt, ap); 1851 va_end(ap); 1852 (void)fprintf(stderr, "\n"); 1853 (void)fflush(stderr); 1854 1855 PrintOnError(NULL, NULL); 1856 1857 DieHorribly(); 1858 } 1859 1860 /*- 1861 * DieHorribly -- 1862 * Exit without giving a message. 1863 * 1864 * Results: 1865 * None 1866 * 1867 * Side Effects: 1868 * A big one... 1869 */ 1870 void 1871 DieHorribly(void) 1872 { 1873 if (jobsRunning) 1874 Job_AbortAll(); 1875 if (DEBUG(GRAPH2)) 1876 Targ_PrintGraph(2); 1877 Trace_Log(MAKEERROR, 0); 1878 exit(2); /* Not 1, so -q can distinguish error */ 1879 } 1880 1881 /* 1882 * Finish -- 1883 * Called when aborting due to errors in child shell to signal 1884 * abnormal exit. 1885 * 1886 * Results: 1887 * None 1888 * 1889 * Side Effects: 1890 * The program exits 1891 */ 1892 void 1893 Finish(int errors) 1894 /* number of errors encountered in Make_Make */ 1895 { 1896 if (dieQuietly(NULL, -1)) 1897 exit(2); 1898 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1899 } 1900 1901 /* 1902 * eunlink -- 1903 * Remove a file carefully, avoiding directories. 1904 */ 1905 int 1906 eunlink(const char *file) 1907 { 1908 struct stat st; 1909 1910 if (lstat(file, &st) == -1) 1911 return -1; 1912 1913 if (S_ISDIR(st.st_mode)) { 1914 errno = EISDIR; 1915 return -1; 1916 } 1917 return unlink(file); 1918 } 1919 1920 /* 1921 * execError -- 1922 * Print why exec failed, avoiding stdio. 1923 */ 1924 void 1925 execError(const char *af, const char *av) 1926 { 1927 #ifdef USE_IOVEC 1928 int i = 0; 1929 struct iovec iov[8]; 1930 #define IOADD(s) \ 1931 (void)(iov[i].iov_base = UNCONST(s), \ 1932 iov[i].iov_len = strlen(iov[i].iov_base), \ 1933 i++) 1934 #else 1935 #define IOADD(s) (void)write(2, s, strlen(s)) 1936 #endif 1937 1938 IOADD(progname); 1939 IOADD(": "); 1940 IOADD(af); 1941 IOADD("("); 1942 IOADD(av); 1943 IOADD(") failed ("); 1944 IOADD(strerror(errno)); 1945 IOADD(")\n"); 1946 1947 #ifdef USE_IOVEC 1948 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1949 continue; 1950 #endif 1951 } 1952 1953 /* 1954 * usage -- 1955 * exit with usage message 1956 */ 1957 static void 1958 usage(void) 1959 { 1960 char *p; 1961 if ((p = strchr(progname, '[')) != NULL) 1962 *p = '\0'; 1963 1964 (void)fprintf(stderr, 1965 "usage: %s [-BeikNnqrstWwX] \n\ 1966 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1967 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1968 [-V variable] [-v variable] [variable=value] [target ...]\n", 1969 progname); 1970 exit(2); 1971 } 1972 1973 /* 1974 * realpath(3) can get expensive, cache results... 1975 */ 1976 static GNode *cached_realpaths = NULL; 1977 1978 static GNode * 1979 get_cached_realpaths(void) 1980 { 1981 1982 if (!cached_realpaths) { 1983 cached_realpaths = Targ_NewGN("Realpath"); 1984 #ifndef DEBUG_REALPATH_CACHE 1985 cached_realpaths->flags = INTERNAL; 1986 #endif 1987 } 1988 1989 return cached_realpaths; 1990 } 1991 1992 /* purge any relative paths */ 1993 static void 1994 purge_cached_realpaths(void) 1995 { 1996 GNode *cache = get_cached_realpaths(); 1997 Hash_Entry *he, *nhe; 1998 Hash_Search hs; 1999 2000 he = Hash_EnumFirst(&cache->context, &hs); 2001 while (he) { 2002 nhe = Hash_EnumNext(&hs); 2003 if (he->name[0] != '/') { 2004 if (DEBUG(DIR)) 2005 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 2006 Hash_DeleteEntry(&cache->context, he); 2007 } 2008 he = nhe; 2009 } 2010 } 2011 2012 char * 2013 cached_realpath(const char *pathname, char *resolved) 2014 { 2015 GNode *cache; 2016 char *rp, *cp; 2017 2018 if (!pathname || !pathname[0]) 2019 return NULL; 2020 2021 cache = get_cached_realpaths(); 2022 2023 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 2024 /* a hit */ 2025 strlcpy(resolved, rp, MAXPATHLEN); 2026 } else if ((rp = realpath(pathname, resolved)) != NULL) { 2027 Var_Set(pathname, rp, cache); 2028 } /* else should we negative-cache? */ 2029 2030 free(cp); 2031 return rp ? resolved : NULL; 2032 } 2033 2034 int 2035 PrintAddr(void *a, void *b) 2036 { 2037 printf("%lx ", (unsigned long) a); 2038 return b ? 0 : 0; 2039 } 2040 2041 2042 static int 2043 addErrorCMD(void *cmdp, void __unused *gnp) 2044 { 2045 if (cmdp == NULL) 2046 return 1; /* stop */ 2047 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2048 return 0; 2049 } 2050 2051 /* 2052 * Return true if we should die without noise. 2053 * For example our failing child was a sub-make 2054 * or failure happend elsewhere. 2055 */ 2056 int 2057 dieQuietly(GNode *gn, int bf) 2058 { 2059 static int quietly = -1; 2060 2061 if (quietly < 0) { 2062 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2063 quietly = 0; 2064 else if (bf >= 0) 2065 quietly = bf; 2066 else 2067 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2068 } 2069 return quietly; 2070 } 2071 2072 void 2073 PrintOnError(GNode *gn, const char *s) 2074 { 2075 static GNode *en = NULL; 2076 char tmp[64]; 2077 char *cp; 2078 2079 /* we generally want to keep quiet if a sub-make died */ 2080 if (dieQuietly(gn, -1)) 2081 return; 2082 2083 if (s) 2084 printf("%s", s); 2085 2086 printf("\n%s: stopped in %s\n", progname, curdir); 2087 2088 if (en) 2089 return; /* we've been here! */ 2090 if (gn) { 2091 /* 2092 * We can print this even if there is no .ERROR target. 2093 */ 2094 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2095 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2096 Lst_ForEach(gn->commands, addErrorCMD, gn); 2097 } 2098 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2099 sizeof(tmp) - 1); 2100 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2101 if (cp) { 2102 if (*cp) 2103 printf("%s", cp); 2104 free(cp); 2105 } 2106 fflush(stdout); 2107 2108 /* 2109 * Finally, see if there is a .ERROR target, and run it if so. 2110 */ 2111 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2112 if (en) { 2113 en->type |= OP_SPECIAL; 2114 Compat_Make(en, en); 2115 } 2116 } 2117 2118 void 2119 Main_ExportMAKEFLAGS(Boolean first) 2120 { 2121 static int once = 1; 2122 char tmp[64]; 2123 char *s; 2124 2125 if (once != first) 2126 return; 2127 once = 0; 2128 2129 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2130 sizeof(tmp)); 2131 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 2132 if (s && *s) { 2133 #ifdef POSIX 2134 setenv("MAKEFLAGS", s, 1); 2135 #else 2136 setenv("MAKE", s, 1); 2137 #endif 2138 } 2139 } 2140 2141 char * 2142 getTmpdir(void) 2143 { 2144 static char *tmpdir = NULL; 2145 2146 if (!tmpdir) { 2147 struct stat st; 2148 2149 /* 2150 * Honor $TMPDIR but only if it is valid. 2151 * Ensure it ends with /. 2152 */ 2153 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2154 VARF_WANTRES); 2155 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2156 free(tmpdir); 2157 tmpdir = bmake_strdup(_PATH_TMP); 2158 } 2159 } 2160 return tmpdir; 2161 } 2162 2163 /* 2164 * Create and open a temp file using "pattern". 2165 * If "fnamep" is provided set it to a copy of the filename created. 2166 * Otherwise unlink the file once open. 2167 */ 2168 int 2169 mkTempFile(const char *pattern, char **fnamep) 2170 { 2171 static char *tmpdir = NULL; 2172 char tfile[MAXPATHLEN]; 2173 int fd; 2174 2175 if (!pattern) 2176 pattern = TMPPAT; 2177 if (!tmpdir) 2178 tmpdir = getTmpdir(); 2179 if (pattern[0] == '/') { 2180 snprintf(tfile, sizeof(tfile), "%s", pattern); 2181 } else { 2182 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2183 } 2184 if ((fd = mkstemp(tfile)) < 0) 2185 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2186 if (fnamep) { 2187 *fnamep = bmake_strdup(tfile); 2188 } else { 2189 unlink(tfile); /* we just want the descriptor */ 2190 } 2191 return fd; 2192 } 2193 2194 /* 2195 * Convert a string representation of a boolean. 2196 * Anything that looks like "No", "False", "Off", "0" etc, 2197 * is FALSE, otherwise TRUE. 2198 */ 2199 Boolean 2200 s2Boolean(const char *s, Boolean bf) 2201 { 2202 if (s) { 2203 switch(*s) { 2204 case '\0': /* not set - the default wins */ 2205 break; 2206 case '0': 2207 case 'F': 2208 case 'f': 2209 case 'N': 2210 case 'n': 2211 bf = FALSE; 2212 break; 2213 case 'O': 2214 case 'o': 2215 switch (s[1]) { 2216 case 'F': 2217 case 'f': 2218 bf = FALSE; 2219 break; 2220 default: 2221 bf = TRUE; 2222 break; 2223 } 2224 break; 2225 default: 2226 bf = TRUE; 2227 break; 2228 } 2229 } 2230 return bf; 2231 } 2232 2233 /* 2234 * Return a Boolean based on setting of a knob. 2235 * 2236 * If the knob is not set, the supplied default is the return value. 2237 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2238 * is FALSE, otherwise TRUE. 2239 */ 2240 Boolean 2241 getBoolean(const char *name, Boolean bf) 2242 { 2243 char tmp[64]; 2244 char *cp; 2245 2246 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2247 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2248 2249 if (cp) { 2250 bf = s2Boolean(cp, bf); 2251 free(cp); 2252 } 2253 } 2254 return bf; 2255 } 2256