main.c revision 261212
1/* $NetBSD: main.c,v 1.225 2013/09/14 15:09:34 matt 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 1.225 2013/09/14 15:09:34 matt 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 1.225 2013/09/14 15:09:34 matt 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#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 <fcntl.h> 129#include <signal.h> 130#include <stdarg.h> 131#include <stdio.h> 132#include <stdlib.h> 133#include <time.h> 134#include <ctype.h> 135 136#include "make.h" 137#include "hash.h" 138#include "dir.h" 139#include "job.h" 140#include "pathnames.h" 141#include "trace.h" 142 143#ifdef USE_IOVEC 144#include <sys/uio.h> 145#endif 146 147#ifndef DEFMAXLOCAL 148#define DEFMAXLOCAL DEFMAXJOBS 149#endif /* DEFMAXLOCAL */ 150 151#ifndef __arraycount 152# define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) 153#endif 154 155Lst create; /* Targets to be made */ 156time_t now; /* Time at start of make */ 157GNode *DEFAULT; /* .DEFAULT node */ 158Boolean allPrecious; /* .PRECIOUS given on line by itself */ 159 160static Boolean noBuiltins; /* -r flag */ 161static Lst makefiles; /* ordered list of makefiles to read */ 162static Boolean printVars; /* print value of one or more vars */ 163static Lst variables; /* list of variables to print */ 164int maxJobs; /* -j argument */ 165static int maxJobTokens; /* -j argument */ 166Boolean compatMake; /* -B argument */ 167int debug; /* -d argument */ 168Boolean debugVflag; /* -dV */ 169Boolean noExecute; /* -n flag */ 170Boolean noRecursiveExecute; /* -N flag */ 171Boolean keepgoing; /* -k flag */ 172Boolean queryFlag; /* -q flag */ 173Boolean touchFlag; /* -t flag */ 174Boolean enterFlag; /* -w flag */ 175Boolean ignoreErrors; /* -i flag */ 176Boolean beSilent; /* -s flag */ 177Boolean oldVars; /* variable substitution style */ 178Boolean checkEnvFirst; /* -e flag */ 179Boolean parseWarnFatal; /* -W flag */ 180Boolean jobServer; /* -J flag */ 181static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 182Boolean varNoExportEnv; /* -X flag */ 183Boolean doing_depend; /* Set while reading .depend */ 184static Boolean jobsRunning; /* TRUE if the jobs might be running */ 185static const char * tracefile; 186static void MainParseArgs(int, char **); 187static int ReadMakefile(const void *, const void *); 188static void usage(void) MAKE_ATTR_DEAD; 189 190static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 191static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 192char curdir[MAXPATHLEN + 1]; /* Startup directory */ 193char *progname; /* the program name */ 194char *makeDependfile; 195pid_t myPid; 196int makelevel; 197 198Boolean forceJobs = FALSE; 199 200/* 201 * On some systems MACHINE is defined as something other than 202 * what we want. 203 */ 204#ifdef FORCE_MACHINE 205# undef MACHINE 206# define MACHINE FORCE_MACHINE 207#endif 208 209extern Lst parseIncPath; 210 211/* 212 * For compatibility with the POSIX version of MAKEFLAGS that includes 213 * all the options with out -, convert flags to -f -l -a -g -s. 214 */ 215static char * 216explode(const char *flags) 217{ 218 size_t len; 219 char *nf, *st; 220 const char *f; 221 222 if (flags == NULL) 223 return NULL; 224 225 for (f = flags; *f; f++) 226 if (!isalpha((unsigned char)*f)) 227 break; 228 229 if (*f) 230 return bmake_strdup(flags); 231 232 len = strlen(flags); 233 st = nf = bmake_malloc(len * 3 + 1); 234 while (*flags) { 235 *nf++ = '-'; 236 *nf++ = *flags++; 237 *nf++ = ' '; 238 } 239 *nf = '\0'; 240 return st; 241} 242 243static void 244parse_debug_options(const char *argvalue) 245{ 246 const char *modules; 247 const char *mode; 248 char *fname; 249 int len; 250 251 for (modules = argvalue; *modules; ++modules) { 252 switch (*modules) { 253 case 'A': 254 debug = ~0; 255 break; 256 case 'a': 257 debug |= DEBUG_ARCH; 258 break; 259 case 'C': 260 debug |= DEBUG_CWD; 261 break; 262 case 'c': 263 debug |= DEBUG_COND; 264 break; 265 case 'd': 266 debug |= DEBUG_DIR; 267 break; 268 case 'e': 269 debug |= DEBUG_ERROR; 270 break; 271 case 'f': 272 debug |= DEBUG_FOR; 273 break; 274 case 'g': 275 if (modules[1] == '1') { 276 debug |= DEBUG_GRAPH1; 277 ++modules; 278 } 279 else if (modules[1] == '2') { 280 debug |= DEBUG_GRAPH2; 281 ++modules; 282 } 283 else if (modules[1] == '3') { 284 debug |= DEBUG_GRAPH3; 285 ++modules; 286 } 287 break; 288 case 'j': 289 debug |= DEBUG_JOB; 290 break; 291 case 'l': 292 debug |= DEBUG_LOUD; 293 break; 294 case 'M': 295 debug |= DEBUG_META; 296 break; 297 case 'm': 298 debug |= DEBUG_MAKE; 299 break; 300 case 'n': 301 debug |= DEBUG_SCRIPT; 302 break; 303 case 'p': 304 debug |= DEBUG_PARSE; 305 break; 306 case 's': 307 debug |= DEBUG_SUFF; 308 break; 309 case 't': 310 debug |= DEBUG_TARG; 311 break; 312 case 'V': 313 debugVflag = TRUE; 314 break; 315 case 'v': 316 debug |= DEBUG_VAR; 317 break; 318 case 'x': 319 debug |= DEBUG_SHELL; 320 break; 321 case 'F': 322 if (debug_file != stdout && debug_file != stderr) 323 fclose(debug_file); 324 if (*++modules == '+') { 325 modules++; 326 mode = "a"; 327 } else 328 mode = "w"; 329 if (strcmp(modules, "stdout") == 0) { 330 debug_file = stdout; 331 goto debug_setbuf; 332 } 333 if (strcmp(modules, "stderr") == 0) { 334 debug_file = stderr; 335 goto debug_setbuf; 336 } 337 len = strlen(modules); 338 fname = malloc(len + 20); 339 memcpy(fname, modules, len + 1); 340 /* Let the filename be modified by the pid */ 341 if (strcmp(fname + len - 3, ".%d") == 0) 342 snprintf(fname + len - 2, 20, "%d", getpid()); 343 debug_file = fopen(fname, mode); 344 if (!debug_file) { 345 fprintf(stderr, "Cannot open debug file %s\n", 346 fname); 347 usage(); 348 } 349 free(fname); 350 goto debug_setbuf; 351 default: 352 (void)fprintf(stderr, 353 "%s: illegal argument to d option -- %c\n", 354 progname, *modules); 355 usage(); 356 } 357 } 358debug_setbuf: 359 /* 360 * Make the debug_file unbuffered, and make 361 * stdout line buffered (unless debugfile == stdout). 362 */ 363 setvbuf(debug_file, NULL, _IONBF, 0); 364 if (debug_file != stdout) { 365 setvbuf(stdout, NULL, _IOLBF, 0); 366 } 367} 368 369/*- 370 * MainParseArgs -- 371 * Parse a given argument vector. Called from main() and from 372 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 373 * 374 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 375 * 376 * Results: 377 * None 378 * 379 * Side Effects: 380 * Various global and local flags will be set depending on the flags 381 * given 382 */ 383static void 384MainParseArgs(int argc, char **argv) 385{ 386 char *p; 387 int c = '?'; 388 int arginc; 389 char *argvalue; 390 const char *getopt_def; 391 char *optscan; 392 Boolean inOption, dashDash = FALSE; 393 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 394 395#define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 396/* Can't actually use getopt(3) because rescanning is not portable */ 397 398 getopt_def = OPTFLAGS; 399rearg: 400 inOption = FALSE; 401 optscan = NULL; 402 while(argc > 1) { 403 char *getopt_spec; 404 if(!inOption) 405 optscan = argv[1]; 406 c = *optscan++; 407 arginc = 0; 408 if(inOption) { 409 if(c == '\0') { 410 ++argv; 411 --argc; 412 inOption = FALSE; 413 continue; 414 } 415 } else { 416 if (c != '-' || dashDash) 417 break; 418 inOption = TRUE; 419 c = *optscan++; 420 } 421 /* '-' found at some earlier point */ 422 getopt_spec = strchr(getopt_def, c); 423 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 424 /* -<something> found, and <something> should have an arg */ 425 inOption = FALSE; 426 arginc = 1; 427 argvalue = optscan; 428 if(*argvalue == '\0') { 429 if (argc < 3) 430 goto noarg; 431 argvalue = argv[2]; 432 arginc = 2; 433 } 434 } else { 435 argvalue = NULL; 436 } 437 switch(c) { 438 case '\0': 439 arginc = 1; 440 inOption = FALSE; 441 break; 442 case 'B': 443 compatMake = TRUE; 444 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 445 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 446 break; 447 case 'C': 448 if (chdir(argvalue) == -1) { 449 (void)fprintf(stderr, 450 "%s: chdir %s: %s\n", 451 progname, argvalue, 452 strerror(errno)); 453 exit(1); 454 } 455 if (getcwd(curdir, MAXPATHLEN) == NULL) { 456 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 457 exit(2); 458 } 459 ignorePWD = TRUE; 460 break; 461 case 'D': 462 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 463 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 464 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 465 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 466 break; 467 case 'I': 468 if (argvalue == NULL) goto noarg; 469 Parse_AddIncludeDir(argvalue); 470 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 471 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 472 break; 473 case 'J': 474 if (argvalue == NULL) goto noarg; 475 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 476 (void)fprintf(stderr, 477 "%s: internal error -- J option malformed (%s)\n", 478 progname, argvalue); 479 usage(); 480 } 481 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 482 (fcntl(jp_1, F_GETFD, 0) < 0)) { 483#if 0 484 (void)fprintf(stderr, 485 "%s: ###### warning -- J descriptors were closed!\n", 486 progname); 487 exit(2); 488#endif 489 jp_0 = -1; 490 jp_1 = -1; 491 compatMake = TRUE; 492 } else { 493 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 494 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 495 jobServer = TRUE; 496 } 497 break; 498 case 'N': 499 noExecute = TRUE; 500 noRecursiveExecute = TRUE; 501 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 502 break; 503 case 'S': 504 keepgoing = FALSE; 505 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 506 break; 507 case 'T': 508 if (argvalue == NULL) goto noarg; 509 tracefile = bmake_strdup(argvalue); 510 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 511 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 512 break; 513 case 'V': 514 if (argvalue == NULL) goto noarg; 515 printVars = TRUE; 516 (void)Lst_AtEnd(variables, argvalue); 517 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 518 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 519 break; 520 case 'W': 521 parseWarnFatal = TRUE; 522 break; 523 case 'X': 524 varNoExportEnv = TRUE; 525 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 526 break; 527 case 'd': 528 if (argvalue == NULL) goto noarg; 529 /* If '-d-opts' don't pass to children */ 530 if (argvalue[0] == '-') 531 argvalue++; 532 else { 533 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 534 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 535 } 536 parse_debug_options(argvalue); 537 break; 538 case 'e': 539 checkEnvFirst = TRUE; 540 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 541 break; 542 case 'f': 543 if (argvalue == NULL) goto noarg; 544 (void)Lst_AtEnd(makefiles, argvalue); 545 break; 546 case 'i': 547 ignoreErrors = TRUE; 548 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 549 break; 550 case 'j': 551 if (argvalue == NULL) goto noarg; 552 forceJobs = TRUE; 553 maxJobs = strtol(argvalue, &p, 0); 554 if (*p != '\0' || maxJobs < 1) { 555 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 556 progname); 557 exit(1); 558 } 559 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 560 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 561 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 562 maxJobTokens = maxJobs; 563 break; 564 case 'k': 565 keepgoing = TRUE; 566 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 567 break; 568 case 'm': 569 if (argvalue == NULL) goto noarg; 570 /* look for magic parent directory search string */ 571 if (strncmp(".../", argvalue, 4) == 0) { 572 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 573 found_path, sizeof(found_path))) 574 break; /* nothing doing */ 575 (void)Dir_AddDir(sysIncPath, found_path); 576 } else { 577 (void)Dir_AddDir(sysIncPath, argvalue); 578 } 579 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 580 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 581 break; 582 case 'n': 583 noExecute = TRUE; 584 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 585 break; 586 case 'q': 587 queryFlag = TRUE; 588 /* Kind of nonsensical, wot? */ 589 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 590 break; 591 case 'r': 592 noBuiltins = TRUE; 593 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 594 break; 595 case 's': 596 beSilent = TRUE; 597 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 598 break; 599 case 't': 600 touchFlag = TRUE; 601 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 602 break; 603 case 'w': 604 enterFlag = TRUE; 605 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 606 break; 607 case '-': 608 dashDash = TRUE; 609 break; 610 default: 611 case '?': 612#ifndef MAKE_NATIVE 613 fprintf(stderr, "getopt(%s) -> %d (%c)\n", 614 OPTFLAGS, c, c); 615#endif 616 usage(); 617 } 618 argv += arginc; 619 argc -= arginc; 620 } 621 622 oldVars = TRUE; 623 624 /* 625 * See if the rest of the arguments are variable assignments and 626 * perform them if so. Else take them to be targets and stuff them 627 * on the end of the "create" list. 628 */ 629 for (; argc > 1; ++argv, --argc) 630 if (Parse_IsVar(argv[1])) { 631 Parse_DoVar(argv[1], VAR_CMD); 632 } else { 633 if (!*argv[1]) 634 Punt("illegal (null) argument."); 635 if (*argv[1] == '-' && !dashDash) 636 goto rearg; 637 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 638 } 639 640 return; 641noarg: 642 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 643 progname, c); 644 usage(); 645} 646 647/*- 648 * Main_ParseArgLine -- 649 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 650 * is encountered and by main() when reading the .MAKEFLAGS envariable. 651 * Takes a line of arguments and breaks it into its 652 * component words and passes those words and the number of them to the 653 * MainParseArgs function. 654 * The line should have all its leading whitespace removed. 655 * 656 * Input: 657 * line Line to fracture 658 * 659 * Results: 660 * None 661 * 662 * Side Effects: 663 * Only those that come from the various arguments. 664 */ 665void 666Main_ParseArgLine(const char *line) 667{ 668 char **argv; /* Manufactured argument vector */ 669 int argc; /* Number of arguments in argv */ 670 char *args; /* Space used by the args */ 671 char *buf, *p1; 672 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 673 size_t len; 674 675 if (line == NULL) 676 return; 677 for (; *line == ' '; ++line) 678 continue; 679 if (!*line) 680 return; 681 682#ifndef POSIX 683 { 684 /* 685 * $MAKE may simply be naming the make(1) binary 686 */ 687 char *cp; 688 689 if (!(cp = strrchr(line, '/'))) 690 cp = line; 691 if ((cp = strstr(cp, "make")) && 692 strcmp(cp, "make") == 0) 693 return; 694 } 695#endif 696 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 697 (void)snprintf(buf, len, "%s %s", argv0, line); 698 if (p1) 699 free(p1); 700 701 argv = brk_string(buf, &argc, TRUE, &args); 702 if (argv == NULL) { 703 Error("Unterminated quoted string [%s]", buf); 704 free(buf); 705 return; 706 } 707 free(buf); 708 MainParseArgs(argc, argv); 709 710 free(args); 711 free(argv); 712} 713 714Boolean 715Main_SetObjdir(const char *path) 716{ 717 struct stat sb; 718 char *p = NULL; 719 char buf[MAXPATHLEN + 1]; 720 Boolean rc = FALSE; 721 722 /* expand variable substitutions */ 723 if (strchr(path, '$') != 0) { 724 snprintf(buf, MAXPATHLEN, "%s", path); 725 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 726 } 727 728 if (path[0] != '/') { 729 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 730 path = buf; 731 } 732 733 /* look for the directory and try to chdir there */ 734 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 735 if (chdir(path)) { 736 (void)fprintf(stderr, "make warning: %s: %s.\n", 737 path, strerror(errno)); 738 } else { 739 strncpy(objdir, path, MAXPATHLEN); 740 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 741 setenv("PWD", objdir, 1); 742 Dir_InitDot(); 743 rc = TRUE; 744 } 745 } 746 747 if (p) 748 free(p); 749 return rc; 750} 751 752/*- 753 * ReadAllMakefiles -- 754 * wrapper around ReadMakefile() to read all. 755 * 756 * Results: 757 * TRUE if ok, FALSE on error 758 */ 759static int 760ReadAllMakefiles(const void *p, const void *q) 761{ 762 return (ReadMakefile(p, q) == 0); 763} 764 765int 766str2Lst_Append(Lst lp, char *str, const char *sep) 767{ 768 char *cp; 769 int n; 770 771 if (!sep) 772 sep = " \t"; 773 774 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 775 (void)Lst_AtEnd(lp, cp); 776 n++; 777 } 778 return (n); 779} 780 781#ifdef SIGINFO 782/*ARGSUSED*/ 783static void 784siginfo(int signo MAKE_ATTR_UNUSED) 785{ 786 char dir[MAXPATHLEN]; 787 char str[2 * MAXPATHLEN]; 788 int len; 789 if (getcwd(dir, sizeof(dir)) == NULL) 790 return; 791 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 792 if (len > 0) 793 (void)write(STDERR_FILENO, str, (size_t)len); 794} 795#endif 796 797/* 798 * Allow makefiles some control over the mode we run in. 799 */ 800void 801MakeMode(const char *mode) 802{ 803 char *mp = NULL; 804 805 if (!mode) 806 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 807 808 if (mode && *mode) { 809 if (strstr(mode, "compat")) { 810 compatMake = TRUE; 811 forceJobs = FALSE; 812 } 813#if USE_META 814 if (strstr(mode, "meta")) 815 meta_mode_init(mode); 816#endif 817 } 818 if (mp) 819 free(mp); 820} 821 822/*- 823 * main -- 824 * The main function, for obvious reasons. Initializes variables 825 * and a few modules, then parses the arguments give it in the 826 * environment and on the command line. Reads the system makefile 827 * followed by either Makefile, makefile or the file given by the 828 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 829 * flags it has received by then uses either the Make or the Compat 830 * module to create the initial list of targets. 831 * 832 * Results: 833 * If -q was given, exits -1 if anything was out-of-date. Else it exits 834 * 0. 835 * 836 * Side Effects: 837 * The program exits when done. Targets are created. etc. etc. etc. 838 */ 839int 840main(int argc, char **argv) 841{ 842 Lst targs; /* target nodes to create -- passed to Make_Init */ 843 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 844 struct stat sb, sa; 845 char *p1, *path; 846 char mdpath[MAXPATHLEN]; 847#ifdef FORCE_MACHINE 848 const char *machine = FORCE_MACHINE; 849#else 850 const char *machine = getenv("MACHINE"); 851#endif 852 const char *machine_arch = getenv("MACHINE_ARCH"); 853 char *syspath = getenv("MAKESYSPATH"); 854 Lst sysMkPath; /* Path of sys.mk */ 855 char *cp = NULL, *start; 856 /* avoid faults on read-only strings */ 857 static char defsyspath[] = _PATH_DEFSYSPATH; 858 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 859 struct timeval rightnow; /* to initialize random seed */ 860 struct utsname utsname; 861 862 /* default to writing debug to stderr */ 863 debug_file = stderr; 864 865#ifdef SIGINFO 866 (void)bmake_signal(SIGINFO, siginfo); 867#endif 868 /* 869 * Set the seed to produce a different random sequence 870 * on each program execution. 871 */ 872 gettimeofday(&rightnow, NULL); 873 srandom(rightnow.tv_sec + rightnow.tv_usec); 874 875 if ((progname = strrchr(argv[0], '/')) != NULL) 876 progname++; 877 else 878 progname = argv[0]; 879#if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 880 /* 881 * get rid of resource limit on file descriptors 882 */ 883 { 884 struct rlimit rl; 885 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 886 rl.rlim_cur != rl.rlim_max) { 887 rl.rlim_cur = rl.rlim_max; 888 (void)setrlimit(RLIMIT_NOFILE, &rl); 889 } 890 } 891#endif 892 893 if (uname(&utsname) == -1) { 894 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 895 strerror(errno)); 896 exit(2); 897 } 898 899 /* 900 * Get the name of this type of MACHINE from utsname 901 * so we can share an executable for similar machines. 902 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 903 * 904 * Note that both MACHINE and MACHINE_ARCH are decided at 905 * run-time. 906 */ 907 if (!machine) { 908#ifdef MAKE_NATIVE 909 machine = utsname.machine; 910#else 911#ifdef MAKE_MACHINE 912 machine = MAKE_MACHINE; 913#else 914 machine = "unknown"; 915#endif 916#endif 917 } 918 919 if (!machine_arch) { 920#if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH) 921 static char machine_arch_buf[sizeof(utsname.machine)]; 922 int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 923 size_t len = sizeof(machine_arch_buf); 924 925 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 926 &len, NULL, 0) < 0) { 927 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 928 strerror(errno)); 929 exit(2); 930 } 931 932 machine_arch = machine_arch_buf; 933#else 934#ifndef MACHINE_ARCH 935#ifdef MAKE_MACHINE_ARCH 936 machine_arch = MAKE_MACHINE_ARCH; 937#else 938 machine_arch = "unknown"; 939#endif 940#else 941 machine_arch = MACHINE_ARCH; 942#endif 943#endif 944 } 945 946 myPid = getpid(); /* remember this for vFork() */ 947 948 /* 949 * Just in case MAKEOBJDIR wants us to do something tricky. 950 */ 951 Var_Init(); /* Initialize the lists of variables for 952 * parsing arguments */ 953 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 954 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 955 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 956#ifdef MAKE_VERSION 957 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 958#endif 959 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 960 /* 961 * This is the traditional preference for makefiles. 962 */ 963#ifndef MAKEFILE_PREFERENCE_LIST 964# define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 965#endif 966 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 967 VAR_GLOBAL, 0); 968 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 969 970 create = Lst_Init(FALSE); 971 makefiles = Lst_Init(FALSE); 972 printVars = FALSE; 973 debugVflag = FALSE; 974 variables = Lst_Init(FALSE); 975 beSilent = FALSE; /* Print commands as executed */ 976 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 977 noExecute = FALSE; /* Execute all commands */ 978 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 979 keepgoing = FALSE; /* Stop on error */ 980 allPrecious = FALSE; /* Remove targets when interrupted */ 981 queryFlag = FALSE; /* This is not just a check-run */ 982 noBuiltins = FALSE; /* Read the built-in rules */ 983 touchFlag = FALSE; /* Actually update targets */ 984 debug = 0; /* No debug verbosity, please. */ 985 jobsRunning = FALSE; 986 987 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 988 maxJobTokens = maxJobs; 989 compatMake = FALSE; /* No compat mode */ 990 ignorePWD = FALSE; 991 992 /* 993 * Initialize the parsing, directory and variable modules to prepare 994 * for the reading of inclusion paths and variable settings on the 995 * command line 996 */ 997 998 /* 999 * Initialize various variables. 1000 * MAKE also gets this name, for compatibility 1001 * .MAKEFLAGS gets set to the empty string just in case. 1002 * MFLAGS also gets initialized empty, for compatibility. 1003 */ 1004 Parse_Init(); 1005 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1006 /* 1007 * Leave alone if it is an absolute path, or if it does 1008 * not contain a '/' in which case we need to find it in 1009 * the path, like execvp(3) and the shells do. 1010 */ 1011 p1 = argv[0]; 1012 } else { 1013 /* 1014 * A relative path, canonicalize it. 1015 */ 1016 p1 = realpath(argv[0], mdpath); 1017 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1018 p1 = argv[0]; /* realpath failed */ 1019 } 1020 } 1021 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1022 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1023 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1024 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1025 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1026 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1027 /* some makefiles need to know this */ 1028 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1029 1030 /* 1031 * Set some other useful macros 1032 */ 1033 { 1034 char tmp[64], *ep; 1035 1036 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1037 if (makelevel < 0) 1038 makelevel = 0; 1039 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1040 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1041 snprintf(tmp, sizeof(tmp), "%u", myPid); 1042 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1043 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1044 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1045 } 1046 if (makelevel > 0) { 1047 char pn[1024]; 1048 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1049 progname = bmake_strdup(pn); 1050 } 1051 1052#ifdef USE_META 1053 meta_init(); 1054#endif 1055 /* 1056 * First snag any flags out of the MAKE environment variable. 1057 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1058 * in a different format). 1059 */ 1060#ifdef POSIX 1061 p1 = explode(getenv("MAKEFLAGS")); 1062 Main_ParseArgLine(p1); 1063 free(p1); 1064#else 1065 Main_ParseArgLine(getenv("MAKE")); 1066#endif 1067 1068 /* 1069 * Find where we are (now). 1070 * We take care of PWD for the automounter below... 1071 */ 1072 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1073 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1074 progname, strerror(errno)); 1075 exit(2); 1076 } 1077 1078 MainParseArgs(argc, argv); 1079 1080 if (enterFlag) 1081 printf("%s: Entering directory `%s'\n", progname, curdir); 1082 1083 /* 1084 * Verify that cwd is sane. 1085 */ 1086 if (stat(curdir, &sa) == -1) { 1087 (void)fprintf(stderr, "%s: %s: %s.\n", 1088 progname, curdir, strerror(errno)); 1089 exit(2); 1090 } 1091 1092 /* 1093 * All this code is so that we know where we are when we start up 1094 * on a different machine with pmake. 1095 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1096 * since the value of curdir can vary depending on how we got 1097 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1098 * or via subdir.mk in which case its likely a shell which does 1099 * not provide it. 1100 * So, to stop it breaking this case only, we ignore PWD if 1101 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1102 */ 1103#ifndef NO_PWD_OVERRIDE 1104 if (!ignorePWD) { 1105 char *pwd; 1106 1107 if ((pwd = getenv("PWD")) != NULL && 1108 getenv("MAKEOBJDIRPREFIX") == NULL) { 1109 const char *makeobjdir = getenv("MAKEOBJDIR"); 1110 1111 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1112 if (stat(pwd, &sb) == 0 && 1113 sa.st_ino == sb.st_ino && 1114 sa.st_dev == sb.st_dev) 1115 (void)strncpy(curdir, pwd, MAXPATHLEN); 1116 } 1117 } 1118 } 1119#endif 1120 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1121 1122 /* 1123 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1124 * MAKEOBJDIR is set in the environment, try only that value 1125 * and fall back to .CURDIR if it does not exist. 1126 * 1127 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1128 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1129 * of these paths exist, just use .CURDIR. 1130 */ 1131 Dir_Init(curdir); 1132 (void)Main_SetObjdir(curdir); 1133 1134 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1135 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1136 (void)Main_SetObjdir(mdpath); 1137 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1138 (void)Main_SetObjdir(path); 1139 } else { 1140 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1141 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1142 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1143 _PATH_OBJDIRPREFIX, curdir); 1144 (void)Main_SetObjdir(mdpath); 1145 } 1146 } 1147 1148 /* 1149 * Be compatible if user did not specify -j and did not explicitly 1150 * turned compatibility on 1151 */ 1152 if (!compatMake && !forceJobs) { 1153 compatMake = TRUE; 1154 } 1155 1156 /* 1157 * Initialize archive, target and suffix modules in preparation for 1158 * parsing the makefile(s) 1159 */ 1160 Arch_Init(); 1161 Targ_Init(); 1162 Suff_Init(); 1163 Trace_Init(tracefile); 1164 1165 DEFAULT = NULL; 1166 (void)time(&now); 1167 1168 Trace_Log(MAKESTART, NULL); 1169 1170 /* 1171 * Set up the .TARGETS variable to contain the list of targets to be 1172 * created. If none specified, make the variable empty -- the parser 1173 * will fill the thing in with the default or .MAIN target. 1174 */ 1175 if (!Lst_IsEmpty(create)) { 1176 LstNode ln; 1177 1178 for (ln = Lst_First(create); ln != NULL; 1179 ln = Lst_Succ(ln)) { 1180 char *name = (char *)Lst_Datum(ln); 1181 1182 Var_Append(".TARGETS", name, VAR_GLOBAL); 1183 } 1184 } else 1185 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1186 1187 1188 /* 1189 * If no user-supplied system path was given (through the -m option) 1190 * add the directories from the DEFSYSPATH (more than one may be given 1191 * as dir1:...:dirn) to the system include path. 1192 */ 1193 if (syspath == NULL || *syspath == '\0') 1194 syspath = defsyspath; 1195 else 1196 syspath = bmake_strdup(syspath); 1197 1198 for (start = syspath; *start != '\0'; start = cp) { 1199 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1200 continue; 1201 if (*cp == ':') { 1202 *cp++ = '\0'; 1203 } 1204 /* look for magic parent directory search string */ 1205 if (strncmp(".../", start, 4) != 0) { 1206 (void)Dir_AddDir(defIncPath, start); 1207 } else { 1208 if (Dir_FindHereOrAbove(curdir, start+4, 1209 found_path, sizeof(found_path))) { 1210 (void)Dir_AddDir(defIncPath, found_path); 1211 } 1212 } 1213 } 1214 if (syspath != defsyspath) 1215 free(syspath); 1216 1217 /* 1218 * Read in the built-in rules first, followed by the specified 1219 * makefile, if it was (makefile != NULL), or the default 1220 * makefile and Makefile, in that order, if it wasn't. 1221 */ 1222 if (!noBuiltins) { 1223 LstNode ln; 1224 1225 sysMkPath = Lst_Init(FALSE); 1226 Dir_Expand(_PATH_DEFSYSMK, 1227 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1228 sysMkPath); 1229 if (Lst_IsEmpty(sysMkPath)) 1230 Fatal("%s: no system rules (%s).", progname, 1231 _PATH_DEFSYSMK); 1232 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1233 if (ln == NULL) 1234 Fatal("%s: cannot open %s.", progname, 1235 (char *)Lst_Datum(ln)); 1236 } 1237 1238 if (!Lst_IsEmpty(makefiles)) { 1239 LstNode ln; 1240 1241 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1242 if (ln != NULL) 1243 Fatal("%s: cannot open %s.", progname, 1244 (char *)Lst_Datum(ln)); 1245 } else { 1246 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1247 VAR_CMD, 0); 1248 if (p1) { 1249 (void)str2Lst_Append(makefiles, p1, NULL); 1250 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1251 free(p1); 1252 } 1253 } 1254 1255 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1256 if (!noBuiltins || !printVars) { 1257 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1258 VAR_CMD, 0); 1259 doing_depend = TRUE; 1260 (void)ReadMakefile(makeDependfile, NULL); 1261 doing_depend = FALSE; 1262 } 1263 1264 MakeMode(NULL); 1265 1266 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1267 if (p1) 1268 free(p1); 1269 1270 if (!compatMake) 1271 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1272 if (DEBUG(JOB)) 1273 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1274 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1275 1276 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1277 1278 /* 1279 * For compatibility, look at the directories in the VPATH variable 1280 * and add them to the search path, if the variable is defined. The 1281 * variable's value is in the same format as the PATH envariable, i.e. 1282 * <directory>:<directory>:<directory>... 1283 */ 1284 if (Var_Exists("VPATH", VAR_CMD)) { 1285 char *vpath, savec; 1286 /* 1287 * GCC stores string constants in read-only memory, but 1288 * Var_Subst will want to write this thing, so store it 1289 * in an array 1290 */ 1291 static char VPATH[] = "${VPATH}"; 1292 1293 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1294 path = vpath; 1295 do { 1296 /* skip to end of directory */ 1297 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1298 continue; 1299 /* Save terminator character so know when to stop */ 1300 savec = *cp; 1301 *cp = '\0'; 1302 /* Add directory to search path */ 1303 (void)Dir_AddDir(dirSearchPath, path); 1304 *cp = savec; 1305 path = cp + 1; 1306 } while (savec == ':'); 1307 free(vpath); 1308 } 1309 1310 /* 1311 * Now that all search paths have been read for suffixes et al, it's 1312 * time to add the default search path to their lists... 1313 */ 1314 Suff_DoPaths(); 1315 1316 /* 1317 * Propagate attributes through :: dependency lists. 1318 */ 1319 Targ_Propagate(); 1320 1321 /* print the initial graph, if the user requested it */ 1322 if (DEBUG(GRAPH1)) 1323 Targ_PrintGraph(1); 1324 1325 /* print the values of any variables requested by the user */ 1326 if (printVars) { 1327 LstNode ln; 1328 Boolean expandVars; 1329 1330 if (debugVflag) 1331 expandVars = FALSE; 1332 else 1333 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1334 for (ln = Lst_First(variables); ln != NULL; 1335 ln = Lst_Succ(ln)) { 1336 char *var = (char *)Lst_Datum(ln); 1337 char *value; 1338 1339 if (strchr(var, '$')) { 1340 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1341 } else if (expandVars) { 1342 char tmp[128]; 1343 1344 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1345 Fatal("%s: variable name too big: %s", 1346 progname, var); 1347 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1348 } else { 1349 value = Var_Value(var, VAR_GLOBAL, &p1); 1350 } 1351 printf("%s\n", value ? value : ""); 1352 if (p1) 1353 free(p1); 1354 } 1355 } else { 1356 /* 1357 * Have now read the entire graph and need to make a list of 1358 * targets to create. If none was given on the command line, 1359 * we consult the parsing module to find the main target(s) 1360 * to create. 1361 */ 1362 if (Lst_IsEmpty(create)) 1363 targs = Parse_MainName(); 1364 else 1365 targs = Targ_FindList(create, TARG_CREATE); 1366 1367 if (!compatMake) { 1368 /* 1369 * Initialize job module before traversing the graph 1370 * now that any .BEGIN and .END targets have been read. 1371 * This is done only if the -q flag wasn't given 1372 * (to prevent the .BEGIN from being executed should 1373 * it exist). 1374 */ 1375 if (!queryFlag) { 1376 Job_Init(); 1377 jobsRunning = TRUE; 1378 } 1379 1380 /* Traverse the graph, checking on all the targets */ 1381 outOfDate = Make_Run(targs); 1382 } else { 1383 /* 1384 * Compat_Init will take care of creating all the 1385 * targets as well as initializing the module. 1386 */ 1387 Compat_Run(targs); 1388 } 1389 } 1390 1391#ifdef CLEANUP 1392 Lst_Destroy(targs, NULL); 1393 Lst_Destroy(variables, NULL); 1394 Lst_Destroy(makefiles, NULL); 1395 Lst_Destroy(create, (FreeProc *)free); 1396#endif 1397 1398 /* print the graph now it's been processed if the user requested it */ 1399 if (DEBUG(GRAPH2)) 1400 Targ_PrintGraph(2); 1401 1402 Trace_Log(MAKEEND, 0); 1403 1404 if (enterFlag) 1405 printf("%s: Leaving directory `%s'\n", progname, curdir); 1406 1407 Suff_End(); 1408 Targ_End(); 1409 Arch_End(); 1410 Var_End(); 1411 Parse_End(); 1412 Dir_End(); 1413 Job_End(); 1414 Trace_End(); 1415 1416 return outOfDate ? 1 : 0; 1417} 1418 1419/*- 1420 * ReadMakefile -- 1421 * Open and parse the given makefile. 1422 * 1423 * Results: 1424 * 0 if ok. -1 if couldn't open file. 1425 * 1426 * Side Effects: 1427 * lots 1428 */ 1429static int 1430ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1431{ 1432 const char *fname = p; /* makefile to read */ 1433 int fd; 1434 size_t len = MAXPATHLEN; 1435 char *name, *path = bmake_malloc(len); 1436 1437 if (!strcmp(fname, "-")) { 1438 Parse_File(NULL /*stdin*/, -1); 1439 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1440 } else { 1441 /* if we've chdir'd, rebuild the path name */ 1442 if (strcmp(curdir, objdir) && *fname != '/') { 1443 size_t plen = strlen(curdir) + strlen(fname) + 2; 1444 if (len < plen) 1445 path = bmake_realloc(path, len = 2 * plen); 1446 1447 (void)snprintf(path, len, "%s/%s", curdir, fname); 1448 fd = open(path, O_RDONLY); 1449 if (fd != -1) { 1450 fname = path; 1451 goto found; 1452 } 1453 1454 /* If curdir failed, try objdir (ala .depend) */ 1455 plen = strlen(objdir) + strlen(fname) + 2; 1456 if (len < plen) 1457 path = bmake_realloc(path, len = 2 * plen); 1458 (void)snprintf(path, len, "%s/%s", objdir, fname); 1459 fd = open(path, O_RDONLY); 1460 if (fd != -1) { 1461 fname = path; 1462 goto found; 1463 } 1464 } else { 1465 fd = open(fname, O_RDONLY); 1466 if (fd != -1) 1467 goto found; 1468 } 1469 /* look in -I and system include directories. */ 1470 name = Dir_FindFile(fname, parseIncPath); 1471 if (!name) 1472 name = Dir_FindFile(fname, 1473 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1474 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1475 if (name) 1476 free(name); 1477 free(path); 1478 return(-1); 1479 } 1480 fname = name; 1481 /* 1482 * set the MAKEFILE variable desired by System V fans -- the 1483 * placement of the setting here means it gets set to the last 1484 * makefile specified, as it is set by SysV make. 1485 */ 1486found: 1487 if (!doing_depend) 1488 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1489 Parse_File(fname, fd); 1490 } 1491 free(path); 1492 return(0); 1493} 1494 1495 1496 1497/*- 1498 * Cmd_Exec -- 1499 * Execute the command in cmd, and return the output of that command 1500 * in a string. 1501 * 1502 * Results: 1503 * A string containing the output of the command, or the empty string 1504 * If errnum is not NULL, it contains the reason for the command failure 1505 * 1506 * Side Effects: 1507 * The string must be freed by the caller. 1508 */ 1509char * 1510Cmd_Exec(const char *cmd, const char **errnum) 1511{ 1512 const char *args[4]; /* Args for invoking the shell */ 1513 int fds[2]; /* Pipe streams */ 1514 int cpid; /* Child PID */ 1515 int pid; /* PID from wait() */ 1516 char *res; /* result */ 1517 WAIT_T status; /* command exit status */ 1518 Buffer buf; /* buffer to store the result */ 1519 char *cp; 1520 int cc; 1521 1522 1523 *errnum = NULL; 1524 1525 if (!shellName) 1526 Shell_Init(); 1527 /* 1528 * Set up arguments for shell 1529 */ 1530 args[0] = shellName; 1531 args[1] = "-c"; 1532 args[2] = cmd; 1533 args[3] = NULL; 1534 1535 /* 1536 * Open a pipe for fetching its output 1537 */ 1538 if (pipe(fds) == -1) { 1539 *errnum = "Couldn't create pipe for \"%s\""; 1540 goto bad; 1541 } 1542 1543 /* 1544 * Fork 1545 */ 1546 switch (cpid = vFork()) { 1547 case 0: 1548 /* 1549 * Close input side of pipe 1550 */ 1551 (void)close(fds[0]); 1552 1553 /* 1554 * Duplicate the output stream to the shell's output, then 1555 * shut the extra thing down. Note we don't fetch the error 1556 * stream...why not? Why? 1557 */ 1558 (void)dup2(fds[1], 1); 1559 (void)close(fds[1]); 1560 1561 Var_ExportVars(); 1562 1563 (void)execv(shellPath, UNCONST(args)); 1564 _exit(1); 1565 /*NOTREACHED*/ 1566 1567 case -1: 1568 *errnum = "Couldn't exec \"%s\""; 1569 goto bad; 1570 1571 default: 1572 /* 1573 * No need for the writing half 1574 */ 1575 (void)close(fds[1]); 1576 1577 Buf_Init(&buf, 0); 1578 1579 do { 1580 char result[BUFSIZ]; 1581 cc = read(fds[0], result, sizeof(result)); 1582 if (cc > 0) 1583 Buf_AddBytes(&buf, cc, result); 1584 } 1585 while (cc > 0 || (cc == -1 && errno == EINTR)); 1586 1587 /* 1588 * Close the input side of the pipe. 1589 */ 1590 (void)close(fds[0]); 1591 1592 /* 1593 * Wait for the process to exit. 1594 */ 1595 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1596 JobReapChild(pid, status, FALSE); 1597 continue; 1598 } 1599 cc = Buf_Size(&buf); 1600 res = Buf_Destroy(&buf, FALSE); 1601 1602 if (cc == 0) 1603 *errnum = "Couldn't read shell's output for \"%s\""; 1604 1605 if (WIFSIGNALED(status)) 1606 *errnum = "\"%s\" exited on a signal"; 1607 else if (WEXITSTATUS(status) != 0) 1608 *errnum = "\"%s\" returned non-zero status"; 1609 1610 /* 1611 * Null-terminate the result, convert newlines to spaces and 1612 * install it in the variable. 1613 */ 1614 res[cc] = '\0'; 1615 cp = &res[cc]; 1616 1617 if (cc > 0 && *--cp == '\n') { 1618 /* 1619 * A final newline is just stripped 1620 */ 1621 *cp-- = '\0'; 1622 } 1623 while (cp >= res) { 1624 if (*cp == '\n') { 1625 *cp = ' '; 1626 } 1627 cp--; 1628 } 1629 break; 1630 } 1631 return res; 1632bad: 1633 res = bmake_malloc(1); 1634 *res = '\0'; 1635 return res; 1636} 1637 1638/*- 1639 * Error -- 1640 * Print an error message given its format. 1641 * 1642 * Results: 1643 * None. 1644 * 1645 * Side Effects: 1646 * The message is printed. 1647 */ 1648/* VARARGS */ 1649void 1650Error(const char *fmt, ...) 1651{ 1652 va_list ap; 1653 FILE *err_file; 1654 1655 err_file = debug_file; 1656 if (err_file == stdout) 1657 err_file = stderr; 1658 (void)fflush(stdout); 1659 for (;;) { 1660 va_start(ap, fmt); 1661 fprintf(err_file, "%s: ", progname); 1662 (void)vfprintf(err_file, fmt, ap); 1663 va_end(ap); 1664 (void)fprintf(err_file, "\n"); 1665 (void)fflush(err_file); 1666 if (err_file == stderr) 1667 break; 1668 err_file = stderr; 1669 } 1670} 1671 1672/*- 1673 * Fatal -- 1674 * Produce a Fatal error message. If jobs are running, waits for them 1675 * to finish. 1676 * 1677 * Results: 1678 * None 1679 * 1680 * Side Effects: 1681 * The program exits 1682 */ 1683/* VARARGS */ 1684void 1685Fatal(const char *fmt, ...) 1686{ 1687 va_list ap; 1688 1689 va_start(ap, fmt); 1690 if (jobsRunning) 1691 Job_Wait(); 1692 1693 (void)fflush(stdout); 1694 (void)vfprintf(stderr, fmt, ap); 1695 va_end(ap); 1696 (void)fprintf(stderr, "\n"); 1697 (void)fflush(stderr); 1698 1699 PrintOnError(NULL, NULL); 1700 1701 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1702 Targ_PrintGraph(2); 1703 Trace_Log(MAKEERROR, 0); 1704 exit(2); /* Not 1 so -q can distinguish error */ 1705} 1706 1707/* 1708 * Punt -- 1709 * Major exception once jobs are being created. Kills all jobs, prints 1710 * a message and exits. 1711 * 1712 * Results: 1713 * None 1714 * 1715 * Side Effects: 1716 * All children are killed indiscriminately and the program Lib_Exits 1717 */ 1718/* VARARGS */ 1719void 1720Punt(const char *fmt, ...) 1721{ 1722 va_list ap; 1723 1724 va_start(ap, fmt); 1725 (void)fflush(stdout); 1726 (void)fprintf(stderr, "%s: ", progname); 1727 (void)vfprintf(stderr, fmt, ap); 1728 va_end(ap); 1729 (void)fprintf(stderr, "\n"); 1730 (void)fflush(stderr); 1731 1732 PrintOnError(NULL, NULL); 1733 1734 DieHorribly(); 1735} 1736 1737/*- 1738 * DieHorribly -- 1739 * Exit without giving a message. 1740 * 1741 * Results: 1742 * None 1743 * 1744 * Side Effects: 1745 * A big one... 1746 */ 1747void 1748DieHorribly(void) 1749{ 1750 if (jobsRunning) 1751 Job_AbortAll(); 1752 if (DEBUG(GRAPH2)) 1753 Targ_PrintGraph(2); 1754 Trace_Log(MAKEERROR, 0); 1755 exit(2); /* Not 1, so -q can distinguish error */ 1756} 1757 1758/* 1759 * Finish -- 1760 * Called when aborting due to errors in child shell to signal 1761 * abnormal exit. 1762 * 1763 * Results: 1764 * None 1765 * 1766 * Side Effects: 1767 * The program exits 1768 */ 1769void 1770Finish(int errors) 1771 /* number of errors encountered in Make_Make */ 1772{ 1773 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1774} 1775 1776/* 1777 * eunlink -- 1778 * Remove a file carefully, avoiding directories. 1779 */ 1780int 1781eunlink(const char *file) 1782{ 1783 struct stat st; 1784 1785 if (lstat(file, &st) == -1) 1786 return -1; 1787 1788 if (S_ISDIR(st.st_mode)) { 1789 errno = EISDIR; 1790 return -1; 1791 } 1792 return unlink(file); 1793} 1794 1795/* 1796 * execError -- 1797 * Print why exec failed, avoiding stdio. 1798 */ 1799void 1800execError(const char *af, const char *av) 1801{ 1802#ifdef USE_IOVEC 1803 int i = 0; 1804 struct iovec iov[8]; 1805#define IOADD(s) \ 1806 (void)(iov[i].iov_base = UNCONST(s), \ 1807 iov[i].iov_len = strlen(iov[i].iov_base), \ 1808 i++) 1809#else 1810#define IOADD(s) (void)write(2, s, strlen(s)) 1811#endif 1812 1813 IOADD(progname); 1814 IOADD(": "); 1815 IOADD(af); 1816 IOADD("("); 1817 IOADD(av); 1818 IOADD(") failed ("); 1819 IOADD(strerror(errno)); 1820 IOADD(")\n"); 1821 1822#ifdef USE_IOVEC 1823 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1824 continue; 1825#endif 1826} 1827 1828/* 1829 * usage -- 1830 * exit with usage message 1831 */ 1832static void 1833usage(void) 1834{ 1835 char *p; 1836 if ((p = strchr(progname, '[')) != NULL) 1837 *p = '\0'; 1838 1839 (void)fprintf(stderr, 1840"usage: %s [-BeikNnqrstWwX] \n\ 1841 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1842 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1843 [-V variable] [variable=value] [target ...]\n", progname); 1844 exit(2); 1845} 1846 1847 1848int 1849PrintAddr(void *a, void *b) 1850{ 1851 printf("%lx ", (unsigned long) a); 1852 return b ? 0 : 0; 1853} 1854 1855 1856 1857void 1858PrintOnError(GNode *gn, const char *s) 1859{ 1860 static GNode *en = NULL; 1861 char tmp[64]; 1862 char *cp; 1863 1864 if (s) 1865 printf("%s", s); 1866 1867 printf("\n%s: stopped in %s\n", progname, curdir); 1868 1869 if (en) 1870 return; /* we've been here! */ 1871 if (gn) { 1872 /* 1873 * We can print this even if there is no .ERROR target. 1874 */ 1875 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1876 } 1877 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1878 sizeof(tmp) - 1); 1879 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1880 if (cp) { 1881 if (*cp) 1882 printf("%s", cp); 1883 free(cp); 1884 } 1885 /* 1886 * Finally, see if there is a .ERROR target, and run it if so. 1887 */ 1888 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1889 if (en) { 1890 en->type |= OP_SPECIAL; 1891 Compat_Make(en, en); 1892 } 1893} 1894 1895void 1896Main_ExportMAKEFLAGS(Boolean first) 1897{ 1898 static int once = 1; 1899 char tmp[64]; 1900 char *s; 1901 1902 if (once != first) 1903 return; 1904 once = 0; 1905 1906 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1907 sizeof(tmp)); 1908 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1909 if (s && *s) { 1910#ifdef POSIX 1911 setenv("MAKEFLAGS", s, 1); 1912#else 1913 setenv("MAKE", s, 1); 1914#endif 1915 } 1916} 1917 1918char * 1919getTmpdir(void) 1920{ 1921 static char *tmpdir = NULL; 1922 1923 if (!tmpdir) { 1924 struct stat st; 1925 1926 /* 1927 * Honor $TMPDIR but only if it is valid. 1928 * Ensure it ends with /. 1929 */ 1930 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1931 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1932 free(tmpdir); 1933 tmpdir = bmake_strdup(_PATH_TMP); 1934 } 1935 } 1936 return tmpdir; 1937} 1938 1939/* 1940 * Create and open a temp file using "pattern". 1941 * If "fnamep" is provided set it to a copy of the filename created. 1942 * Otherwise unlink the file once open. 1943 */ 1944int 1945mkTempFile(const char *pattern, char **fnamep) 1946{ 1947 static char *tmpdir = NULL; 1948 char tfile[MAXPATHLEN]; 1949 int fd; 1950 1951 if (!pattern) 1952 pattern = TMPPAT; 1953 if (!tmpdir) 1954 tmpdir = getTmpdir(); 1955 if (pattern[0] == '/') { 1956 snprintf(tfile, sizeof(tfile), "%s", pattern); 1957 } else { 1958 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1959 } 1960 if ((fd = mkstemp(tfile)) < 0) 1961 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1962 if (fnamep) { 1963 *fnamep = bmake_strdup(tfile); 1964 } else { 1965 unlink(tfile); /* we just want the descriptor */ 1966 } 1967 return fd; 1968} 1969 1970 1971/* 1972 * Return a Boolean based on setting of a knob. 1973 * 1974 * If the knob is not set, the supplied default is the return value. 1975 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1976 * is FALSE, otherwise TRUE. 1977 */ 1978Boolean 1979getBoolean(const char *name, Boolean bf) 1980{ 1981 char tmp[64]; 1982 char *cp; 1983 1984 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1985 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1986 1987 if (cp) { 1988 switch(*cp) { 1989 case '\0': /* not set - the default wins */ 1990 break; 1991 case '0': 1992 case 'f': 1993 case 'n': 1994 bf = FALSE; 1995 break; 1996 case 'o': 1997 switch (cp[1]) { 1998 case 'f': 1999 bf = FALSE; 2000 break; 2001 default: 2002 bf = TRUE; 2003 break; 2004 } 2005 break; 2006 default: 2007 bf = TRUE; 2008 break; 2009 } 2010 free(cp); 2011 } 2012 } 2013 return (bf); 2014} 2015