1/* $NetBSD: main.c,v 1.224 2013/09/04 15:38:26 sjg Exp $ */ 2 3/* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35/* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71#ifndef MAKE_NATIVE 72static char rcsid[] = "$NetBSD: main.c,v 1.224 2013/09/04 15:38:26 sjg Exp $"; 73#else 74#include <sys/cdefs.h> 75#ifndef lint 76__COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78#endif /* not lint */ 79 80#ifndef lint 81#if 0 82static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83#else 84__RCSID("$NetBSD: main.c,v 1.224 2013/09/04 15:38:26 sjg Exp $"); 85#endif 86#endif /* not lint */ 87#endif 88 89/*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and two optional 103 * arguments for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and two arguments. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and two arguments. 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#include <sys/utsname.h> 122#include "wait.h" 123 124#include <errno.h> 125#include <fcntl.h> 126#include <signal.h> 127#include <stdarg.h> 128#include <stdio.h> 129#include <stdlib.h> 130#include <time.h> 131#include <ctype.h> 132 133#include "make.h" 134#include "hash.h" 135#include "dir.h" 136#include "job.h" 137#include "pathnames.h" 138#include "trace.h" 139 140#ifdef USE_IOVEC 141#include <sys/uio.h> 142#endif 143 144#ifndef DEFMAXLOCAL 145#define DEFMAXLOCAL DEFMAXJOBS 146#endif /* DEFMAXLOCAL */ 147 148Lst create; /* Targets to be made */ 149time_t now; /* Time at start of make */ 150GNode *DEFAULT; /* .DEFAULT node */ 151Boolean allPrecious; /* .PRECIOUS given on line by itself */ 152 153static Boolean noBuiltins; /* -r flag */ 154static Lst makefiles; /* ordered list of makefiles to read */ 155static Boolean printVars; /* print value of one or more vars */ 156static Lst variables; /* list of variables to print */ 157int maxJobs; /* -j argument */ 158static int maxJobTokens; /* -j argument */ 159Boolean compatMake; /* -B argument */ 160int debug; /* -d argument */ 161Boolean debugVflag; /* -dV */ 162Boolean noExecute; /* -n flag */ 163Boolean noRecursiveExecute; /* -N flag */ 164Boolean keepgoing; /* -k flag */ 165Boolean queryFlag; /* -q flag */ 166Boolean touchFlag; /* -t flag */ 167Boolean enterFlag; /* -w flag */ 168Boolean ignoreErrors; /* -i flag */ 169Boolean beSilent; /* -s flag */ 170Boolean oldVars; /* variable substitution style */ 171Boolean checkEnvFirst; /* -e flag */ 172Boolean parseWarnFatal; /* -W flag */ 173Boolean jobServer; /* -J flag */ 174static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 175Boolean varNoExportEnv; /* -X flag */ 176Boolean doing_depend; /* Set while reading .depend */ 177static Boolean jobsRunning; /* TRUE if the jobs might be running */ 178static const char * tracefile; 179static void MainParseArgs(int, char **); 180static int ReadMakefile(const void *, const void *); 181static void usage(void) MAKE_ATTR_DEAD; 182 183static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 184static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 185char curdir[MAXPATHLEN + 1]; /* Startup directory */ 186char *progname; /* the program name */ 187char *makeDependfile; 188pid_t myPid; 189int makelevel; 190 191Boolean forceJobs = FALSE; 192 193/* 194 * On some systems MACHINE is defined as something other than 195 * what we want. 196 */ 197#ifdef FORCE_MACHINE 198# undef MACHINE 199# define MACHINE FORCE_MACHINE 200#endif 201 202extern Lst parseIncPath; 203 204/* 205 * For compatibility with the POSIX version of MAKEFLAGS that includes 206 * all the options with out -, convert flags to -f -l -a -g -s. 207 */ 208static char * 209explode(const char *flags) 210{ 211 size_t len; 212 char *nf, *st; 213 const char *f; 214 215 if (flags == NULL) 216 return NULL; 217 218 for (f = flags; *f; f++) 219 if (!isalpha((unsigned char)*f)) 220 break; 221 222 if (*f) 223 return bmake_strdup(flags); 224 225 len = strlen(flags); 226 st = nf = bmake_malloc(len * 3 + 1); 227 while (*flags) { 228 *nf++ = '-'; 229 *nf++ = *flags++; 230 *nf++ = ' '; 231 } 232 *nf = '\0'; 233 return st; 234} 235 236static void 237parse_debug_options(const char *argvalue) 238{ 239 const char *modules; 240 const char *mode; 241 char *fname; 242 int len; 243 244 for (modules = argvalue; *modules; ++modules) { 245 switch (*modules) { 246 case 'A': 247 debug = ~0; 248 break; 249 case 'a': 250 debug |= DEBUG_ARCH; 251 break; 252 case 'C': 253 debug |= DEBUG_CWD; 254 break; 255 case 'c': 256 debug |= DEBUG_COND; 257 break; 258 case 'd': 259 debug |= DEBUG_DIR; 260 break; 261 case 'e': 262 debug |= DEBUG_ERROR; 263 break; 264 case 'f': 265 debug |= DEBUG_FOR; 266 break; 267 case 'g': 268 if (modules[1] == '1') { 269 debug |= DEBUG_GRAPH1; 270 ++modules; 271 } 272 else if (modules[1] == '2') { 273 debug |= DEBUG_GRAPH2; 274 ++modules; 275 } 276 else if (modules[1] == '3') { 277 debug |= DEBUG_GRAPH3; 278 ++modules; 279 } 280 break; 281 case 'j': 282 debug |= DEBUG_JOB; 283 break; 284 case 'l': 285 debug |= DEBUG_LOUD; 286 break; 287 case 'M': 288 debug |= DEBUG_META; 289 break; 290 case 'm': 291 debug |= DEBUG_MAKE; 292 break; 293 case 'n': 294 debug |= DEBUG_SCRIPT; 295 break; 296 case 'p': 297 debug |= DEBUG_PARSE; 298 break; 299 case 's': 300 debug |= DEBUG_SUFF; 301 break; 302 case 't': 303 debug |= DEBUG_TARG; 304 break; 305 case 'V': 306 debugVflag = TRUE; 307 break; 308 case 'v': 309 debug |= DEBUG_VAR; 310 break; 311 case 'x': 312 debug |= DEBUG_SHELL; 313 break; 314 case 'F': 315 if (debug_file != stdout && debug_file != stderr) 316 fclose(debug_file); 317 if (*++modules == '+') { 318 modules++; 319 mode = "a"; 320 } else 321 mode = "w"; 322 if (strcmp(modules, "stdout") == 0) { 323 debug_file = stdout; 324 goto debug_setbuf; 325 } 326 if (strcmp(modules, "stderr") == 0) { 327 debug_file = stderr; 328 goto debug_setbuf; 329 } 330 len = strlen(modules); 331 fname = malloc(len + 20); 332 memcpy(fname, modules, len + 1); 333 /* Let the filename be modified by the pid */ 334 if (strcmp(fname + len - 3, ".%d") == 0) 335 snprintf(fname + len - 2, 20, "%d", getpid()); 336 debug_file = fopen(fname, mode); 337 if (!debug_file) { 338 fprintf(stderr, "Cannot open debug file %s\n", 339 fname); 340 usage(); 341 } 342 free(fname); 343 goto debug_setbuf; 344 default: 345 (void)fprintf(stderr, 346 "%s: illegal argument to d option -- %c\n", 347 progname, *modules); 348 usage(); 349 } 350 } 351debug_setbuf: 352 /* 353 * Make the debug_file unbuffered, and make 354 * stdout line buffered (unless debugfile == stdout). 355 */ 356 setvbuf(debug_file, NULL, _IONBF, 0); 357 if (debug_file != stdout) { 358 setvbuf(stdout, NULL, _IOLBF, 0); 359 } 360} 361 362/*- 363 * MainParseArgs -- 364 * Parse a given argument vector. Called from main() and from 365 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 366 * 367 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 368 * 369 * Results: 370 * None 371 * 372 * Side Effects: 373 * Various global and local flags will be set depending on the flags 374 * given 375 */ 376static void 377MainParseArgs(int argc, char **argv) 378{ 379 char *p; 380 int c = '?'; 381 int arginc; 382 char *argvalue; 383 const char *getopt_def; 384 char *optscan; 385 Boolean inOption, dashDash = FALSE; 386 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 387 388#define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 389/* Can't actually use getopt(3) because rescanning is not portable */ 390 391 getopt_def = OPTFLAGS; 392rearg: 393 inOption = FALSE; 394 optscan = NULL; 395 while(argc > 1) { 396 char *getopt_spec; 397 if(!inOption) 398 optscan = argv[1]; 399 c = *optscan++; 400 arginc = 0; 401 if(inOption) { 402 if(c == '\0') { 403 ++argv; 404 --argc; 405 inOption = FALSE; 406 continue; 407 } 408 } else { 409 if (c != '-' || dashDash) 410 break; 411 inOption = TRUE; 412 c = *optscan++; 413 } 414 /* '-' found at some earlier point */ 415 getopt_spec = strchr(getopt_def, c); 416 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 417 /* -<something> found, and <something> should have an arg */ 418 inOption = FALSE; 419 arginc = 1; 420 argvalue = optscan; 421 if(*argvalue == '\0') { 422 if (argc < 3) 423 goto noarg; 424 argvalue = argv[2]; 425 arginc = 2; 426 } 427 } else { 428 argvalue = NULL; 429 } 430 switch(c) { 431 case '\0': 432 arginc = 1; 433 inOption = FALSE; 434 break; 435 case 'B': 436 compatMake = TRUE; 437 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 438 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 439 break; 440 case 'C': 441 if (chdir(argvalue) == -1) { 442 (void)fprintf(stderr, 443 "%s: chdir %s: %s\n", 444 progname, argvalue, 445 strerror(errno)); 446 exit(1); 447 } 448 if (getcwd(curdir, MAXPATHLEN) == NULL) { 449 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 450 exit(2); 451 } 452 ignorePWD = TRUE; 453 break; 454 case 'D': 455 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 456 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 457 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 458 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 459 break; 460 case 'I': 461 if (argvalue == NULL) goto noarg; 462 Parse_AddIncludeDir(argvalue); 463 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 464 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 465 break; 466 case 'J': 467 if (argvalue == NULL) goto noarg; 468 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 469 (void)fprintf(stderr, 470 "%s: internal error -- J option malformed (%s)\n", 471 progname, argvalue); 472 usage(); 473 } 474 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 475 (fcntl(jp_1, F_GETFD, 0) < 0)) { 476#if 0 477 (void)fprintf(stderr, 478 "%s: ###### warning -- J descriptors were closed!\n", 479 progname); 480 exit(2); 481#endif 482 jp_0 = -1; 483 jp_1 = -1; 484 compatMake = TRUE; 485 } else { 486 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 487 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 488 jobServer = TRUE; 489 } 490 break; 491 case 'N': 492 noExecute = TRUE; 493 noRecursiveExecute = TRUE; 494 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 495 break; 496 case 'S': 497 keepgoing = FALSE; 498 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 499 break; 500 case 'T': 501 if (argvalue == NULL) goto noarg; 502 tracefile = bmake_strdup(argvalue); 503 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 504 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 505 break; 506 case 'V': 507 if (argvalue == NULL) goto noarg; 508 printVars = TRUE; 509 (void)Lst_AtEnd(variables, argvalue); 510 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 511 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 512 break; 513 case 'W': 514 parseWarnFatal = TRUE; 515 break; 516 case 'X': 517 varNoExportEnv = TRUE; 518 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 519 break; 520 case 'd': 521 if (argvalue == NULL) goto noarg; 522 /* If '-d-opts' don't pass to children */ 523 if (argvalue[0] == '-') 524 argvalue++; 525 else { 526 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 527 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 528 } 529 parse_debug_options(argvalue); 530 break; 531 case 'e': 532 checkEnvFirst = TRUE; 533 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 534 break; 535 case 'f': 536 if (argvalue == NULL) goto noarg; 537 (void)Lst_AtEnd(makefiles, argvalue); 538 break; 539 case 'i': 540 ignoreErrors = TRUE; 541 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 542 break; 543 case 'j': 544 if (argvalue == NULL) goto noarg; 545 forceJobs = TRUE; 546 maxJobs = strtol(argvalue, &p, 0); 547 if (*p != '\0' || maxJobs < 1) { 548 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 549 progname); 550 exit(1); 551 } 552 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 553 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 554 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 555 maxJobTokens = maxJobs; 556 break; 557 case 'k': 558 keepgoing = TRUE; 559 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 560 break; 561 case 'm': 562 if (argvalue == NULL) goto noarg; 563 /* look for magic parent directory search string */ 564 if (strncmp(".../", argvalue, 4) == 0) { 565 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 566 found_path, sizeof(found_path))) 567 break; /* nothing doing */ 568 (void)Dir_AddDir(sysIncPath, found_path); 569 } else { 570 (void)Dir_AddDir(sysIncPath, argvalue); 571 } 572 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 573 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 574 break; 575 case 'n': 576 noExecute = TRUE; 577 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 578 break; 579 case 'q': 580 queryFlag = TRUE; 581 /* Kind of nonsensical, wot? */ 582 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 583 break; 584 case 'r': 585 noBuiltins = TRUE; 586 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 587 break; 588 case 's': 589 beSilent = TRUE; 590 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 591 break; 592 case 't': 593 touchFlag = TRUE; 594 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 595 break; 596 case 'w': 597 enterFlag = TRUE; 598 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 599 break; 600 case '-': 601 dashDash = TRUE; 602 break; 603 default: 604 case '?': 605#ifndef MAKE_NATIVE 606 fprintf(stderr, "getopt(%s) -> %d (%c)\n", 607 OPTFLAGS, c, c); 608#endif 609 usage(); 610 } 611 argv += arginc; 612 argc -= arginc; 613 } 614 615 oldVars = TRUE; 616 617 /* 618 * See if the rest of the arguments are variable assignments and 619 * perform them if so. Else take them to be targets and stuff them 620 * on the end of the "create" list. 621 */ 622 for (; argc > 1; ++argv, --argc) 623 if (Parse_IsVar(argv[1])) { 624 Parse_DoVar(argv[1], VAR_CMD); 625 } else { 626 if (!*argv[1]) 627 Punt("illegal (null) argument."); 628 if (*argv[1] == '-' && !dashDash) 629 goto rearg; 630 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 631 } 632 633 return; 634noarg: 635 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 636 progname, c); 637 usage(); 638} 639 640/*- 641 * Main_ParseArgLine -- 642 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 643 * is encountered and by main() when reading the .MAKEFLAGS envariable. 644 * Takes a line of arguments and breaks it into its 645 * component words and passes those words and the number of them to the 646 * MainParseArgs function. 647 * The line should have all its leading whitespace removed. 648 * 649 * Input: 650 * line Line to fracture 651 * 652 * Results: 653 * None 654 * 655 * Side Effects: 656 * Only those that come from the various arguments. 657 */ 658void 659Main_ParseArgLine(const char *line) 660{ 661 char **argv; /* Manufactured argument vector */ 662 int argc; /* Number of arguments in argv */ 663 char *args; /* Space used by the args */ 664 char *buf, *p1; 665 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 666 size_t len; 667 668 if (line == NULL) 669 return; 670 for (; *line == ' '; ++line) 671 continue; 672 if (!*line) 673 return; 674 675#ifndef POSIX 676 { 677 /* 678 * $MAKE may simply be naming the make(1) binary 679 */ 680 char *cp; 681 682 if (!(cp = strrchr(line, '/'))) 683 cp = line; 684 if ((cp = strstr(cp, "make")) && 685 strcmp(cp, "make") == 0) 686 return; 687 } 688#endif 689 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 690 (void)snprintf(buf, len, "%s %s", argv0, line); 691 if (p1) 692 free(p1); 693 694 argv = brk_string(buf, &argc, TRUE, &args); 695 if (argv == NULL) { 696 Error("Unterminated quoted string [%s]", buf); 697 free(buf); 698 return; 699 } 700 free(buf); 701 MainParseArgs(argc, argv); 702 703 free(args); 704 free(argv); 705} 706 707Boolean 708Main_SetObjdir(const char *path) 709{ 710 struct stat sb; 711 char *p = NULL; 712 char buf[MAXPATHLEN + 1]; 713 Boolean rc = FALSE; 714 715 /* expand variable substitutions */ 716 if (strchr(path, '$') != 0) { 717 snprintf(buf, MAXPATHLEN, "%s", path); 718 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 719 } 720 721 if (path[0] != '/') { 722 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 723 path = buf; 724 } 725 726 /* look for the directory and try to chdir there */ 727 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 728 if (chdir(path)) { 729 (void)fprintf(stderr, "make warning: %s: %s.\n", 730 path, strerror(errno)); 731 } else { 732 strncpy(objdir, path, MAXPATHLEN); 733 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 734 setenv("PWD", objdir, 1); 735 Dir_InitDot(); 736 rc = TRUE; 737 } 738 } 739 740 if (p) 741 free(p); 742 return rc; 743} 744 745/*- 746 * ReadAllMakefiles -- 747 * wrapper around ReadMakefile() to read all. 748 * 749 * Results: 750 * TRUE if ok, FALSE on error 751 */ 752static int 753ReadAllMakefiles(const void *p, const void *q) 754{ 755 return (ReadMakefile(p, q) == 0); 756} 757 758int 759str2Lst_Append(Lst lp, char *str, const char *sep) 760{ 761 char *cp; 762 int n; 763 764 if (!sep) 765 sep = " \t"; 766 767 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 768 (void)Lst_AtEnd(lp, cp); 769 n++; 770 } 771 return (n); 772} 773 774#ifdef SIGINFO 775/*ARGSUSED*/ 776static void 777siginfo(int signo MAKE_ATTR_UNUSED) 778{ 779 char dir[MAXPATHLEN]; 780 char str[2 * MAXPATHLEN]; 781 int len; 782 if (getcwd(dir, sizeof(dir)) == NULL) 783 return; 784 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 785 if (len > 0) 786 (void)write(STDERR_FILENO, str, (size_t)len); 787} 788#endif 789 790/* 791 * Allow makefiles some control over the mode we run in. 792 */ 793void 794MakeMode(const char *mode) 795{ 796 char *mp = NULL; 797 798 if (!mode) 799 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 800 801 if (mode && *mode) { 802 if (strstr(mode, "compat")) { 803 compatMake = TRUE; 804 forceJobs = FALSE; 805 } 806#if USE_META 807 if (strstr(mode, "meta")) 808 meta_mode_init(mode); 809#endif 810 } 811 if (mp) 812 free(mp); 813} 814 815/*- 816 * main -- 817 * The main function, for obvious reasons. Initializes variables 818 * and a few modules, then parses the arguments give it in the 819 * environment and on the command line. Reads the system makefile 820 * followed by either Makefile, makefile or the file given by the 821 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 822 * flags it has received by then uses either the Make or the Compat 823 * module to create the initial list of targets. 824 * 825 * Results: 826 * If -q was given, exits -1 if anything was out-of-date. Else it exits 827 * 0. 828 * 829 * Side Effects: 830 * The program exits when done. Targets are created. etc. etc. etc. 831 */ 832int 833main(int argc, char **argv) 834{ 835 Lst targs; /* target nodes to create -- passed to Make_Init */ 836 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 837 struct stat sb, sa; 838 char *p1, *path; 839 char mdpath[MAXPATHLEN]; 840#ifdef FORCE_MACHINE 841 const char *machine = FORCE_MACHINE; 842#else 843 const char *machine = getenv("MACHINE"); 844#endif 845 const char *machine_arch = getenv("MACHINE_ARCH"); 846 char *syspath = getenv("MAKESYSPATH"); 847 Lst sysMkPath; /* Path of sys.mk */ 848 char *cp = NULL, *start; 849 /* avoid faults on read-only strings */ 850 static char defsyspath[] = _PATH_DEFSYSPATH; 851 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 852 struct timeval rightnow; /* to initialize random seed */ 853 struct utsname utsname; 854 855 /* default to writing debug to stderr */ 856 debug_file = stderr; 857 858#ifdef SIGINFO 859 (void)bmake_signal(SIGINFO, siginfo); 860#endif 861 /* 862 * Set the seed to produce a different random sequence 863 * on each program execution. 864 */ 865 gettimeofday(&rightnow, NULL); 866 srandom(rightnow.tv_sec + rightnow.tv_usec); 867 868 if ((progname = strrchr(argv[0], '/')) != NULL) 869 progname++; 870 else 871 progname = argv[0]; 872#if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 873 /* 874 * get rid of resource limit on file descriptors 875 */ 876 { 877 struct rlimit rl; 878 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 879 rl.rlim_cur != rl.rlim_max) { 880 rl.rlim_cur = rl.rlim_max; 881 (void)setrlimit(RLIMIT_NOFILE, &rl); 882 } 883 } 884#endif 885 886 if (uname(&utsname) == -1) { 887 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 888 strerror(errno)); 889 exit(2); 890 } 891 892 /* 893 * Get the name of this type of MACHINE from utsname 894 * so we can share an executable for similar machines. 895 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 896 * 897 * Note that both MACHINE and MACHINE_ARCH are decided at 898 * run-time. 899 */ 900 if (!machine) { 901#ifdef MAKE_NATIVE 902 machine = utsname.machine; 903#else 904#ifdef MAKE_MACHINE 905 machine = MAKE_MACHINE; 906#else 907 machine = "unknown"; 908#endif 909#endif 910 } 911 912 if (!machine_arch) { 913#ifndef MACHINE_ARCH 914#ifdef MAKE_MACHINE_ARCH 915 machine_arch = MAKE_MACHINE_ARCH; 916#else 917 machine_arch = "unknown"; 918#endif 919#else 920 machine_arch = MACHINE_ARCH; 921#endif 922 } 923 924 myPid = getpid(); /* remember this for vFork() */ 925 926 /* 927 * Just in case MAKEOBJDIR wants us to do something tricky. 928 */ 929 Var_Init(); /* Initialize the lists of variables for 930 * parsing arguments */ 931 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 932 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 933 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 934#ifdef MAKE_VERSION 935 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 936#endif 937 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 938 /* 939 * This is the traditional preference for makefiles. 940 */ 941#ifndef MAKEFILE_PREFERENCE_LIST 942# define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 943#endif 944 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 945 VAR_GLOBAL, 0); 946 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 947 948 create = Lst_Init(FALSE); 949 makefiles = Lst_Init(FALSE); 950 printVars = FALSE; 951 debugVflag = FALSE; 952 variables = Lst_Init(FALSE); 953 beSilent = FALSE; /* Print commands as executed */ 954 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 955 noExecute = FALSE; /* Execute all commands */ 956 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 957 keepgoing = FALSE; /* Stop on error */ 958 allPrecious = FALSE; /* Remove targets when interrupted */ 959 queryFlag = FALSE; /* This is not just a check-run */ 960 noBuiltins = FALSE; /* Read the built-in rules */ 961 touchFlag = FALSE; /* Actually update targets */ 962 debug = 0; /* No debug verbosity, please. */ 963 jobsRunning = FALSE; 964 965 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 966 maxJobTokens = maxJobs; 967 compatMake = FALSE; /* No compat mode */ 968 ignorePWD = FALSE; 969 970 /* 971 * Initialize the parsing, directory and variable modules to prepare 972 * for the reading of inclusion paths and variable settings on the 973 * command line 974 */ 975 976 /* 977 * Initialize various variables. 978 * MAKE also gets this name, for compatibility 979 * .MAKEFLAGS gets set to the empty string just in case. 980 * MFLAGS also gets initialized empty, for compatibility. 981 */ 982 Parse_Init(); 983 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 984 /* 985 * Leave alone if it is an absolute path, or if it does 986 * not contain a '/' in which case we need to find it in 987 * the path, like execvp(3) and the shells do. 988 */ 989 p1 = argv[0]; 990 } else { 991 /* 992 * A relative path, canonicalize it. 993 */ 994 p1 = realpath(argv[0], mdpath); 995 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 996 p1 = argv[0]; /* realpath failed */ 997 } 998 } 999 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1000 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1001 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1002 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1003 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1004 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1005 /* some makefiles need to know this */ 1006 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1007 1008 /* 1009 * Set some other useful macros 1010 */ 1011 { 1012 char tmp[64], *ep; 1013 1014 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1015 if (makelevel < 0) 1016 makelevel = 0; 1017 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1018 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1019 snprintf(tmp, sizeof(tmp), "%u", myPid); 1020 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1021 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1022 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1023 } 1024 if (makelevel > 0) { 1025 char pn[1024]; 1026 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1027 progname = bmake_strdup(pn); 1028 } 1029 1030#ifdef USE_META 1031 meta_init(); 1032#endif 1033 /* 1034 * First snag any flags out of the MAKE environment variable. 1035 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1036 * in a different format). 1037 */ 1038#ifdef POSIX 1039 p1 = explode(getenv("MAKEFLAGS")); 1040 Main_ParseArgLine(p1); 1041 free(p1); 1042#else 1043 Main_ParseArgLine(getenv("MAKE")); 1044#endif 1045 1046 /* 1047 * Find where we are (now). 1048 * We take care of PWD for the automounter below... 1049 */ 1050 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1051 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1052 progname, strerror(errno)); 1053 exit(2); 1054 } 1055 1056 MainParseArgs(argc, argv); 1057 1058 if (enterFlag) 1059 printf("%s: Entering directory `%s'\n", progname, curdir); 1060 1061 /* 1062 * Verify that cwd is sane. 1063 */ 1064 if (stat(curdir, &sa) == -1) { 1065 (void)fprintf(stderr, "%s: %s: %s.\n", 1066 progname, curdir, strerror(errno)); 1067 exit(2); 1068 } 1069 1070 /* 1071 * All this code is so that we know where we are when we start up 1072 * on a different machine with pmake. 1073 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1074 * since the value of curdir can vary depending on how we got 1075 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1076 * or via subdir.mk in which case its likely a shell which does 1077 * not provide it. 1078 * So, to stop it breaking this case only, we ignore PWD if 1079 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1080 */ 1081#ifndef NO_PWD_OVERRIDE 1082 if (!ignorePWD) { 1083 char *pwd; 1084 1085 if ((pwd = getenv("PWD")) != NULL && 1086 getenv("MAKEOBJDIRPREFIX") == NULL) { 1087 const char *makeobjdir = getenv("MAKEOBJDIR"); 1088 1089 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1090 if (stat(pwd, &sb) == 0 && 1091 sa.st_ino == sb.st_ino && 1092 sa.st_dev == sb.st_dev) 1093 (void)strncpy(curdir, pwd, MAXPATHLEN); 1094 } 1095 } 1096 } 1097#endif 1098 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1099 1100 /* 1101 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1102 * MAKEOBJDIR is set in the environment, try only that value 1103 * and fall back to .CURDIR if it does not exist. 1104 * 1105 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1106 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1107 * of these paths exist, just use .CURDIR. 1108 */ 1109 Dir_Init(curdir); 1110 (void)Main_SetObjdir(curdir); 1111 1112 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1113 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1114 (void)Main_SetObjdir(mdpath); 1115 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1116 (void)Main_SetObjdir(path); 1117 } else { 1118 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1119 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1120 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1121 _PATH_OBJDIRPREFIX, curdir); 1122 (void)Main_SetObjdir(mdpath); 1123 } 1124 } 1125 1126 /* 1127 * Be compatible if user did not specify -j and did not explicitly 1128 * turned compatibility on 1129 */ 1130 if (!compatMake && !forceJobs) { 1131 compatMake = TRUE; 1132 } 1133 1134 /* 1135 * Initialize archive, target and suffix modules in preparation for 1136 * parsing the makefile(s) 1137 */ 1138 Arch_Init(); 1139 Targ_Init(); 1140 Suff_Init(); 1141 Trace_Init(tracefile); 1142 1143 DEFAULT = NULL; 1144 (void)time(&now); 1145 1146 Trace_Log(MAKESTART, NULL); 1147 1148 /* 1149 * Set up the .TARGETS variable to contain the list of targets to be 1150 * created. If none specified, make the variable empty -- the parser 1151 * will fill the thing in with the default or .MAIN target. 1152 */ 1153 if (!Lst_IsEmpty(create)) { 1154 LstNode ln; 1155 1156 for (ln = Lst_First(create); ln != NULL; 1157 ln = Lst_Succ(ln)) { 1158 char *name = (char *)Lst_Datum(ln); 1159 1160 Var_Append(".TARGETS", name, VAR_GLOBAL); 1161 } 1162 } else 1163 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1164 1165 1166 /* 1167 * If no user-supplied system path was given (through the -m option) 1168 * add the directories from the DEFSYSPATH (more than one may be given 1169 * as dir1:...:dirn) to the system include path. 1170 */ 1171 if (syspath == NULL || *syspath == '\0') 1172 syspath = defsyspath; 1173 else 1174 syspath = bmake_strdup(syspath); 1175 1176 for (start = syspath; *start != '\0'; start = cp) { 1177 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1178 continue; 1179 if (*cp == ':') { 1180 *cp++ = '\0'; 1181 } 1182 /* look for magic parent directory search string */ 1183 if (strncmp(".../", start, 4) != 0) { 1184 (void)Dir_AddDir(defIncPath, start); 1185 } else { 1186 if (Dir_FindHereOrAbove(curdir, start+4, 1187 found_path, sizeof(found_path))) { 1188 (void)Dir_AddDir(defIncPath, found_path); 1189 } 1190 } 1191 } 1192 if (syspath != defsyspath) 1193 free(syspath); 1194 1195 /* 1196 * Read in the built-in rules first, followed by the specified 1197 * makefile, if it was (makefile != NULL), or the default 1198 * makefile and Makefile, in that order, if it wasn't. 1199 */ 1200 if (!noBuiltins) { 1201 LstNode ln; 1202 1203 sysMkPath = Lst_Init(FALSE); 1204 Dir_Expand(_PATH_DEFSYSMK, 1205 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1206 sysMkPath); 1207 if (Lst_IsEmpty(sysMkPath)) 1208 Fatal("%s: no system rules (%s).", progname, 1209 _PATH_DEFSYSMK); 1210 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1211 if (ln == NULL) 1212 Fatal("%s: cannot open %s.", progname, 1213 (char *)Lst_Datum(ln)); 1214 } 1215 1216 if (!Lst_IsEmpty(makefiles)) { 1217 LstNode ln; 1218 1219 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1220 if (ln != NULL) 1221 Fatal("%s: cannot open %s.", progname, 1222 (char *)Lst_Datum(ln)); 1223 } else { 1224 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1225 VAR_CMD, 0); 1226 if (p1) { 1227 (void)str2Lst_Append(makefiles, p1, NULL); 1228 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1229 free(p1); 1230 } 1231 } 1232 1233 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1234 if (!noBuiltins || !printVars) { 1235 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1236 VAR_CMD, 0); 1237 doing_depend = TRUE; 1238 (void)ReadMakefile(makeDependfile, NULL); 1239 doing_depend = FALSE; 1240 } 1241 1242 MakeMode(NULL); 1243 1244 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1245 if (p1) 1246 free(p1); 1247 1248 if (!compatMake) 1249 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1250 if (DEBUG(JOB)) 1251 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1252 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1253 1254 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1255 1256 /* 1257 * For compatibility, look at the directories in the VPATH variable 1258 * and add them to the search path, if the variable is defined. The 1259 * variable's value is in the same format as the PATH envariable, i.e. 1260 * <directory>:<directory>:<directory>... 1261 */ 1262 if (Var_Exists("VPATH", VAR_CMD)) { 1263 char *vpath, savec; 1264 /* 1265 * GCC stores string constants in read-only memory, but 1266 * Var_Subst will want to write this thing, so store it 1267 * in an array 1268 */ 1269 static char VPATH[] = "${VPATH}"; 1270 1271 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1272 path = vpath; 1273 do { 1274 /* skip to end of directory */ 1275 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1276 continue; 1277 /* Save terminator character so know when to stop */ 1278 savec = *cp; 1279 *cp = '\0'; 1280 /* Add directory to search path */ 1281 (void)Dir_AddDir(dirSearchPath, path); 1282 *cp = savec; 1283 path = cp + 1; 1284 } while (savec == ':'); 1285 free(vpath); 1286 } 1287 1288 /* 1289 * Now that all search paths have been read for suffixes et al, it's 1290 * time to add the default search path to their lists... 1291 */ 1292 Suff_DoPaths(); 1293 1294 /* 1295 * Propagate attributes through :: dependency lists. 1296 */ 1297 Targ_Propagate(); 1298 1299 /* print the initial graph, if the user requested it */ 1300 if (DEBUG(GRAPH1)) 1301 Targ_PrintGraph(1); 1302 1303 /* print the values of any variables requested by the user */ 1304 if (printVars) { 1305 LstNode ln; 1306 Boolean expandVars; 1307 1308 if (debugVflag) 1309 expandVars = FALSE; 1310 else 1311 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1312 for (ln = Lst_First(variables); ln != NULL; 1313 ln = Lst_Succ(ln)) { 1314 char *var = (char *)Lst_Datum(ln); 1315 char *value; 1316 1317 if (strchr(var, '$')) { 1318 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1319 } else if (expandVars) { 1320 char tmp[128]; 1321 1322 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1323 Fatal("%s: variable name too big: %s", 1324 progname, var); 1325 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1326 } else { 1327 value = Var_Value(var, VAR_GLOBAL, &p1); 1328 } 1329 printf("%s\n", value ? value : ""); 1330 if (p1) 1331 free(p1); 1332 } 1333 } else { 1334 /* 1335 * Have now read the entire graph and need to make a list of 1336 * targets to create. If none was given on the command line, 1337 * we consult the parsing module to find the main target(s) 1338 * to create. 1339 */ 1340 if (Lst_IsEmpty(create)) 1341 targs = Parse_MainName(); 1342 else 1343 targs = Targ_FindList(create, TARG_CREATE); 1344 1345 if (!compatMake) { 1346 /* 1347 * Initialize job module before traversing the graph 1348 * now that any .BEGIN and .END targets have been read. 1349 * This is done only if the -q flag wasn't given 1350 * (to prevent the .BEGIN from being executed should 1351 * it exist). 1352 */ 1353 if (!queryFlag) { 1354 Job_Init(); 1355 jobsRunning = TRUE; 1356 } 1357 1358 /* Traverse the graph, checking on all the targets */ 1359 outOfDate = Make_Run(targs); 1360 } else { 1361 /* 1362 * Compat_Init will take care of creating all the 1363 * targets as well as initializing the module. 1364 */ 1365 Compat_Run(targs); 1366 } 1367 } 1368 1369#ifdef CLEANUP 1370 Lst_Destroy(targs, NULL); 1371 Lst_Destroy(variables, NULL); 1372 Lst_Destroy(makefiles, NULL); 1373 Lst_Destroy(create, (FreeProc *)free); 1374#endif 1375 1376 /* print the graph now it's been processed if the user requested it */ 1377 if (DEBUG(GRAPH2)) 1378 Targ_PrintGraph(2); 1379 1380 Trace_Log(MAKEEND, 0); 1381 1382 if (enterFlag) 1383 printf("%s: Leaving directory `%s'\n", progname, curdir); 1384 1385 Suff_End(); 1386 Targ_End(); 1387 Arch_End(); 1388 Var_End(); 1389 Parse_End(); 1390 Dir_End(); 1391 Job_End(); 1392 Trace_End(); 1393 1394 return outOfDate ? 1 : 0; 1395} 1396 1397/*- 1398 * ReadMakefile -- 1399 * Open and parse the given makefile. 1400 * 1401 * Results: 1402 * 0 if ok. -1 if couldn't open file. 1403 * 1404 * Side Effects: 1405 * lots 1406 */ 1407static int 1408ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1409{ 1410 const char *fname = p; /* makefile to read */ 1411 int fd; 1412 size_t len = MAXPATHLEN; 1413 char *name, *path = bmake_malloc(len); 1414 1415 if (!strcmp(fname, "-")) { 1416 Parse_File(NULL /*stdin*/, -1); 1417 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1418 } else { 1419 /* if we've chdir'd, rebuild the path name */ 1420 if (strcmp(curdir, objdir) && *fname != '/') { 1421 size_t plen = strlen(curdir) + strlen(fname) + 2; 1422 if (len < plen) 1423 path = bmake_realloc(path, len = 2 * plen); 1424 1425 (void)snprintf(path, len, "%s/%s", curdir, fname); 1426 fd = open(path, O_RDONLY); 1427 if (fd != -1) { 1428 fname = path; 1429 goto found; 1430 } 1431 1432 /* If curdir failed, try objdir (ala .depend) */ 1433 plen = strlen(objdir) + strlen(fname) + 2; 1434 if (len < plen) 1435 path = bmake_realloc(path, len = 2 * plen); 1436 (void)snprintf(path, len, "%s/%s", objdir, fname); 1437 fd = open(path, O_RDONLY); 1438 if (fd != -1) { 1439 fname = path; 1440 goto found; 1441 } 1442 } else { 1443 fd = open(fname, O_RDONLY); 1444 if (fd != -1) 1445 goto found; 1446 } 1447 /* look in -I and system include directories. */ 1448 name = Dir_FindFile(fname, parseIncPath); 1449 if (!name) 1450 name = Dir_FindFile(fname, 1451 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1452 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1453 if (name) 1454 free(name); 1455 free(path); 1456 return(-1); 1457 } 1458 fname = name; 1459 /* 1460 * set the MAKEFILE variable desired by System V fans -- the 1461 * placement of the setting here means it gets set to the last 1462 * makefile specified, as it is set by SysV make. 1463 */ 1464found: 1465 if (!doing_depend) 1466 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1467 Parse_File(fname, fd); 1468 } 1469 free(path); 1470 return(0); 1471} 1472 1473 1474 1475/*- 1476 * Cmd_Exec -- 1477 * Execute the command in cmd, and return the output of that command 1478 * in a string. 1479 * 1480 * Results: 1481 * A string containing the output of the command, or the empty string 1482 * If errnum is not NULL, it contains the reason for the command failure 1483 * 1484 * Side Effects: 1485 * The string must be freed by the caller. 1486 */ 1487char * 1488Cmd_Exec(const char *cmd, const char **errnum) 1489{ 1490 const char *args[4]; /* Args for invoking the shell */ 1491 int fds[2]; /* Pipe streams */ 1492 int cpid; /* Child PID */ 1493 int pid; /* PID from wait() */ 1494 char *res; /* result */ 1495 WAIT_T status; /* command exit status */ 1496 Buffer buf; /* buffer to store the result */ 1497 char *cp; 1498 int cc; 1499 1500 1501 *errnum = NULL; 1502 1503 if (!shellName) 1504 Shell_Init(); 1505 /* 1506 * Set up arguments for shell 1507 */ 1508 args[0] = shellName; 1509 args[1] = "-c"; 1510 args[2] = cmd; 1511 args[3] = NULL; 1512 1513 /* 1514 * Open a pipe for fetching its output 1515 */ 1516 if (pipe(fds) == -1) { 1517 *errnum = "Couldn't create pipe for \"%s\""; 1518 goto bad; 1519 } 1520 1521 /* 1522 * Fork 1523 */ 1524 switch (cpid = vFork()) { 1525 case 0: 1526 /* 1527 * Close input side of pipe 1528 */ 1529 (void)close(fds[0]); 1530 1531 /* 1532 * Duplicate the output stream to the shell's output, then 1533 * shut the extra thing down. Note we don't fetch the error 1534 * stream...why not? Why? 1535 */ 1536 (void)dup2(fds[1], 1); 1537 (void)close(fds[1]); 1538 1539 Var_ExportVars(); 1540 1541 (void)execv(shellPath, UNCONST(args)); 1542 _exit(1); 1543 /*NOTREACHED*/ 1544 1545 case -1: 1546 *errnum = "Couldn't exec \"%s\""; 1547 goto bad; 1548 1549 default: 1550 /* 1551 * No need for the writing half 1552 */ 1553 (void)close(fds[1]); 1554 1555 Buf_Init(&buf, 0); 1556 1557 do { 1558 char result[BUFSIZ]; 1559 cc = read(fds[0], result, sizeof(result)); 1560 if (cc > 0) 1561 Buf_AddBytes(&buf, cc, result); 1562 } 1563 while (cc > 0 || (cc == -1 && errno == EINTR)); 1564 1565 /* 1566 * Close the input side of the pipe. 1567 */ 1568 (void)close(fds[0]); 1569 1570 /* 1571 * Wait for the process to exit. 1572 */ 1573 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1574 JobReapChild(pid, status, FALSE); 1575 continue; 1576 } 1577 cc = Buf_Size(&buf); 1578 res = Buf_Destroy(&buf, FALSE); 1579 1580 if (cc == 0) 1581 *errnum = "Couldn't read shell's output for \"%s\""; 1582 1583 if (WIFSIGNALED(status)) 1584 *errnum = "\"%s\" exited on a signal"; 1585 else if (WEXITSTATUS(status) != 0) 1586 *errnum = "\"%s\" returned non-zero status"; 1587 1588 /* 1589 * Null-terminate the result, convert newlines to spaces and 1590 * install it in the variable. 1591 */ 1592 res[cc] = '\0'; 1593 cp = &res[cc]; 1594 1595 if (cc > 0 && *--cp == '\n') { 1596 /* 1597 * A final newline is just stripped 1598 */ 1599 *cp-- = '\0'; 1600 } 1601 while (cp >= res) { 1602 if (*cp == '\n') { 1603 *cp = ' '; 1604 } 1605 cp--; 1606 } 1607 break; 1608 } 1609 return res; 1610bad: 1611 res = bmake_malloc(1); 1612 *res = '\0'; 1613 return res; 1614} 1615 1616/*- 1617 * Error -- 1618 * Print an error message given its format. 1619 * 1620 * Results: 1621 * None. 1622 * 1623 * Side Effects: 1624 * The message is printed. 1625 */ 1626/* VARARGS */ 1627void 1628Error(const char *fmt, ...) 1629{ 1630 va_list ap; 1631 FILE *err_file; 1632 1633 err_file = debug_file; 1634 if (err_file == stdout) 1635 err_file = stderr; 1636 (void)fflush(stdout); 1637 for (;;) { 1638 va_start(ap, fmt); 1639 fprintf(err_file, "%s: ", progname); 1640 (void)vfprintf(err_file, fmt, ap); 1641 va_end(ap); 1642 (void)fprintf(err_file, "\n"); 1643 (void)fflush(err_file); 1644 if (err_file == stderr) 1645 break; 1646 err_file = stderr; 1647 } 1648} 1649 1650/*- 1651 * Fatal -- 1652 * Produce a Fatal error message. If jobs are running, waits for them 1653 * to finish. 1654 * 1655 * Results: 1656 * None 1657 * 1658 * Side Effects: 1659 * The program exits 1660 */ 1661/* VARARGS */ 1662void 1663Fatal(const char *fmt, ...) 1664{ 1665 va_list ap; 1666 1667 va_start(ap, fmt); 1668 if (jobsRunning) 1669 Job_Wait(); 1670 1671 (void)fflush(stdout); 1672 (void)vfprintf(stderr, fmt, ap); 1673 va_end(ap); 1674 (void)fprintf(stderr, "\n"); 1675 (void)fflush(stderr); 1676 1677 PrintOnError(NULL, NULL); 1678 1679 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1680 Targ_PrintGraph(2); 1681 Trace_Log(MAKEERROR, 0); 1682 exit(2); /* Not 1 so -q can distinguish error */ 1683} 1684 1685/* 1686 * Punt -- 1687 * Major exception once jobs are being created. Kills all jobs, prints 1688 * a message and exits. 1689 * 1690 * Results: 1691 * None 1692 * 1693 * Side Effects: 1694 * All children are killed indiscriminately and the program Lib_Exits 1695 */ 1696/* VARARGS */ 1697void 1698Punt(const char *fmt, ...) 1699{ 1700 va_list ap; 1701 1702 va_start(ap, fmt); 1703 (void)fflush(stdout); 1704 (void)fprintf(stderr, "%s: ", progname); 1705 (void)vfprintf(stderr, fmt, ap); 1706 va_end(ap); 1707 (void)fprintf(stderr, "\n"); 1708 (void)fflush(stderr); 1709 1710 PrintOnError(NULL, NULL); 1711 1712 DieHorribly(); 1713} 1714 1715/*- 1716 * DieHorribly -- 1717 * Exit without giving a message. 1718 * 1719 * Results: 1720 * None 1721 * 1722 * Side Effects: 1723 * A big one... 1724 */ 1725void 1726DieHorribly(void) 1727{ 1728 if (jobsRunning) 1729 Job_AbortAll(); 1730 if (DEBUG(GRAPH2)) 1731 Targ_PrintGraph(2); 1732 Trace_Log(MAKEERROR, 0); 1733 exit(2); /* Not 1, so -q can distinguish error */ 1734} 1735 1736/* 1737 * Finish -- 1738 * Called when aborting due to errors in child shell to signal 1739 * abnormal exit. 1740 * 1741 * Results: 1742 * None 1743 * 1744 * Side Effects: 1745 * The program exits 1746 */ 1747void 1748Finish(int errors) 1749 /* number of errors encountered in Make_Make */ 1750{ 1751 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1752} 1753 1754/* 1755 * eunlink -- 1756 * Remove a file carefully, avoiding directories. 1757 */ 1758int 1759eunlink(const char *file) 1760{ 1761 struct stat st; 1762 1763 if (lstat(file, &st) == -1) 1764 return -1; 1765 1766 if (S_ISDIR(st.st_mode)) { 1767 errno = EISDIR; 1768 return -1; 1769 } 1770 return unlink(file); 1771} 1772 1773/* 1774 * execError -- 1775 * Print why exec failed, avoiding stdio. 1776 */ 1777void 1778execError(const char *af, const char *av) 1779{ 1780#ifdef USE_IOVEC 1781 int i = 0; 1782 struct iovec iov[8]; 1783#define IOADD(s) \ 1784 (void)(iov[i].iov_base = UNCONST(s), \ 1785 iov[i].iov_len = strlen(iov[i].iov_base), \ 1786 i++) 1787#else 1788#define IOADD(s) (void)write(2, s, strlen(s)) 1789#endif 1790 1791 IOADD(progname); 1792 IOADD(": "); 1793 IOADD(af); 1794 IOADD("("); 1795 IOADD(av); 1796 IOADD(") failed ("); 1797 IOADD(strerror(errno)); 1798 IOADD(")\n"); 1799 1800#ifdef USE_IOVEC 1801 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1802 continue; 1803#endif 1804} 1805 1806/* 1807 * usage -- 1808 * exit with usage message 1809 */ 1810static void 1811usage(void) 1812{ 1813 char *p; 1814 if ((p = strchr(progname, '[')) != NULL) 1815 *p = '\0'; 1816 1817 (void)fprintf(stderr, 1818"usage: %s [-BeikNnqrstWwX] \n\ 1819 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1820 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1821 [-V variable] [variable=value] [target ...]\n", progname); 1822 exit(2); 1823} 1824 1825 1826int 1827PrintAddr(void *a, void *b) 1828{ 1829 printf("%lx ", (unsigned long) a); 1830 return b ? 0 : 0; 1831} 1832 1833 1834 1835void 1836PrintOnError(GNode *gn, const char *s) 1837{ 1838 static GNode *en = NULL; 1839 char tmp[64]; 1840 char *cp; 1841 1842 if (s) 1843 printf("%s", s); 1844 1845 printf("\n%s: stopped in %s\n", progname, curdir); 1846 1847 if (en) 1848 return; /* we've been here! */ 1849 if (gn) { 1850 /* 1851 * We can print this even if there is no .ERROR target. 1852 */ 1853 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1854 } 1855 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1856 sizeof(tmp) - 1); 1857 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1858 if (cp) { 1859 if (*cp) 1860 printf("%s", cp); 1861 free(cp); 1862 } 1863 /* 1864 * Finally, see if there is a .ERROR target, and run it if so. 1865 */ 1866 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1867 if (en) { 1868 en->type |= OP_SPECIAL; 1869 Compat_Make(en, en); 1870 } 1871} 1872 1873void 1874Main_ExportMAKEFLAGS(Boolean first) 1875{ 1876 static int once = 1; 1877 char tmp[64]; 1878 char *s; 1879 1880 if (once != first) 1881 return; 1882 once = 0; 1883 1884 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1885 sizeof(tmp)); 1886 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1887 if (s && *s) { 1888#ifdef POSIX 1889 setenv("MAKEFLAGS", s, 1); 1890#else 1891 setenv("MAKE", s, 1); 1892#endif 1893 } 1894} 1895 1896char * 1897getTmpdir(void) 1898{ 1899 static char *tmpdir = NULL; 1900 1901 if (!tmpdir) { 1902 struct stat st; 1903 1904 /* 1905 * Honor $TMPDIR but only if it is valid. 1906 * Ensure it ends with /. 1907 */ 1908 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1909 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1910 free(tmpdir); 1911 tmpdir = bmake_strdup(_PATH_TMP); 1912 } 1913 } 1914 return tmpdir; 1915} 1916 1917/* 1918 * Create and open a temp file using "pattern". 1919 * If "fnamep" is provided set it to a copy of the filename created. 1920 * Otherwise unlink the file once open. 1921 */ 1922int 1923mkTempFile(const char *pattern, char **fnamep) 1924{ 1925 static char *tmpdir = NULL; 1926 char tfile[MAXPATHLEN]; 1927 int fd; 1928 1929 if (!pattern) 1930 pattern = TMPPAT; 1931 if (!tmpdir) 1932 tmpdir = getTmpdir(); 1933 if (pattern[0] == '/') { 1934 snprintf(tfile, sizeof(tfile), "%s", pattern); 1935 } else { 1936 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1937 } 1938 if ((fd = mkstemp(tfile)) < 0) 1939 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1940 if (fnamep) { 1941 *fnamep = bmake_strdup(tfile); 1942 } else { 1943 unlink(tfile); /* we just want the descriptor */ 1944 } 1945 return fd; 1946} 1947 1948 1949/* 1950 * Return a Boolean based on setting of a knob. 1951 * 1952 * If the knob is not set, the supplied default is the return value. 1953 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1954 * is FALSE, otherwise TRUE. 1955 */ 1956Boolean 1957getBoolean(const char *name, Boolean bf) 1958{ 1959 char tmp[64]; 1960 char *cp; 1961 1962 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1963 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1964 1965 if (cp) { 1966 switch(*cp) { 1967 case '\0': /* not set - the default wins */ 1968 break; 1969 case '0': 1970 case 'f': 1971 case 'n': 1972 bf = FALSE; 1973 break; 1974 case 'o': 1975 switch (cp[1]) { 1976 case 'f': 1977 bf = FALSE; 1978 break; 1979 default: 1980 bf = TRUE; 1981 break; 1982 } 1983 break; 1984 default: 1985 bf = TRUE; 1986 break; 1987 } 1988 free(cp); 1989 } 1990 } 1991 return (bf); 1992} 1993