main.c revision 292068
1/* $NetBSD: main.c,v 1.235 2015/10/25 05:24:44 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 1.235 2015/10/25 05:24:44 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 1.235 2015/10/25 05:24:44 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 optional arguments 103 * for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and arguments for it. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and arguments for it. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116#include <sys/types.h> 117#include <sys/time.h> 118#include <sys/param.h> 119#include <sys/resource.h> 120#include <sys/stat.h> 121#if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) 122#include <sys/sysctl.h> 123#endif 124#include <sys/utsname.h> 125#include "wait.h" 126 127#include <errno.h> 128#include <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 enterFlagObj; /* -w and objdir != srcdir */ 176Boolean ignoreErrors; /* -i flag */ 177Boolean beSilent; /* -s flag */ 178Boolean oldVars; /* variable substitution style */ 179Boolean checkEnvFirst; /* -e flag */ 180Boolean parseWarnFatal; /* -W flag */ 181Boolean jobServer; /* -J flag */ 182static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 183Boolean varNoExportEnv; /* -X flag */ 184Boolean doing_depend; /* Set while reading .depend */ 185static Boolean jobsRunning; /* TRUE if the jobs might be running */ 186static const char * tracefile; 187static void MainParseArgs(int, char **); 188static int ReadMakefile(const void *, const void *); 189static void usage(void) MAKE_ATTR_DEAD; 190 191static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 192static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 193char curdir[MAXPATHLEN + 1]; /* Startup directory */ 194char *progname; /* the program name */ 195char *makeDependfile; 196pid_t myPid; 197int makelevel; 198 199Boolean forceJobs = FALSE; 200 201/* 202 * On some systems MACHINE is defined as something other than 203 * what we want. 204 */ 205#ifdef FORCE_MACHINE 206# undef MACHINE 207# define MACHINE FORCE_MACHINE 208#endif 209 210extern Lst parseIncPath; 211 212/* 213 * For compatibility with the POSIX version of MAKEFLAGS that includes 214 * all the options with out -, convert flags to -f -l -a -g -s. 215 */ 216static char * 217explode(const char *flags) 218{ 219 size_t len; 220 char *nf, *st; 221 const char *f; 222 223 if (flags == NULL) 224 return NULL; 225 226 for (f = flags; *f; f++) 227 if (!isalpha((unsigned char)*f)) 228 break; 229 230 if (*f) 231 return bmake_strdup(flags); 232 233 len = strlen(flags); 234 st = nf = bmake_malloc(len * 3 + 1); 235 while (*flags) { 236 *nf++ = '-'; 237 *nf++ = *flags++; 238 *nf++ = ' '; 239 } 240 *nf = '\0'; 241 return st; 242} 243 244static void 245parse_debug_options(const char *argvalue) 246{ 247 const char *modules; 248 const char *mode; 249 char *fname; 250 int len; 251 252 for (modules = argvalue; *modules; ++modules) { 253 switch (*modules) { 254 case 'A': 255 debug = ~0; 256 break; 257 case 'a': 258 debug |= DEBUG_ARCH; 259 break; 260 case 'C': 261 debug |= DEBUG_CWD; 262 break; 263 case 'c': 264 debug |= DEBUG_COND; 265 break; 266 case 'd': 267 debug |= DEBUG_DIR; 268 break; 269 case 'e': 270 debug |= DEBUG_ERROR; 271 break; 272 case 'f': 273 debug |= DEBUG_FOR; 274 break; 275 case 'g': 276 if (modules[1] == '1') { 277 debug |= DEBUG_GRAPH1; 278 ++modules; 279 } 280 else if (modules[1] == '2') { 281 debug |= DEBUG_GRAPH2; 282 ++modules; 283 } 284 else if (modules[1] == '3') { 285 debug |= DEBUG_GRAPH3; 286 ++modules; 287 } 288 break; 289 case 'j': 290 debug |= DEBUG_JOB; 291 break; 292 case 'l': 293 debug |= DEBUG_LOUD; 294 break; 295 case 'M': 296 debug |= DEBUG_META; 297 break; 298 case 'm': 299 debug |= DEBUG_MAKE; 300 break; 301 case 'n': 302 debug |= DEBUG_SCRIPT; 303 break; 304 case 'p': 305 debug |= DEBUG_PARSE; 306 break; 307 case 's': 308 debug |= DEBUG_SUFF; 309 break; 310 case 't': 311 debug |= DEBUG_TARG; 312 break; 313 case 'V': 314 debugVflag = TRUE; 315 break; 316 case 'v': 317 debug |= DEBUG_VAR; 318 break; 319 case 'x': 320 debug |= DEBUG_SHELL; 321 break; 322 case 'F': 323 if (debug_file != stdout && debug_file != stderr) 324 fclose(debug_file); 325 if (*++modules == '+') { 326 modules++; 327 mode = "a"; 328 } else 329 mode = "w"; 330 if (strcmp(modules, "stdout") == 0) { 331 debug_file = stdout; 332 goto debug_setbuf; 333 } 334 if (strcmp(modules, "stderr") == 0) { 335 debug_file = stderr; 336 goto debug_setbuf; 337 } 338 len = strlen(modules); 339 fname = malloc(len + 20); 340 memcpy(fname, modules, len + 1); 341 /* Let the filename be modified by the pid */ 342 if (strcmp(fname + len - 3, ".%d") == 0) 343 snprintf(fname + len - 2, 20, "%d", getpid()); 344 debug_file = fopen(fname, mode); 345 if (!debug_file) { 346 fprintf(stderr, "Cannot open debug file %s\n", 347 fname); 348 usage(); 349 } 350 free(fname); 351 goto debug_setbuf; 352 default: 353 (void)fprintf(stderr, 354 "%s: illegal argument to d option -- %c\n", 355 progname, *modules); 356 usage(); 357 } 358 } 359debug_setbuf: 360 /* 361 * Make the debug_file unbuffered, and make 362 * stdout line buffered (unless debugfile == stdout). 363 */ 364 setvbuf(debug_file, NULL, _IONBF, 0); 365 if (debug_file != stdout) { 366 setvbuf(stdout, NULL, _IOLBF, 0); 367 } 368} 369 370/*- 371 * MainParseArgs -- 372 * Parse a given argument vector. Called from main() and from 373 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 374 * 375 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 376 * 377 * Results: 378 * None 379 * 380 * Side Effects: 381 * Various global and local flags will be set depending on the flags 382 * given 383 */ 384static void 385MainParseArgs(int argc, char **argv) 386{ 387 char *p; 388 int c = '?'; 389 int arginc; 390 char *argvalue; 391 const char *getopt_def; 392 char *optscan; 393 Boolean inOption, dashDash = FALSE; 394 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 395 396#define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 397/* Can't actually use getopt(3) because rescanning is not portable */ 398 399 getopt_def = OPTFLAGS; 400rearg: 401 inOption = FALSE; 402 optscan = NULL; 403 while(argc > 1) { 404 char *getopt_spec; 405 if(!inOption) 406 optscan = argv[1]; 407 c = *optscan++; 408 arginc = 0; 409 if(inOption) { 410 if(c == '\0') { 411 ++argv; 412 --argc; 413 inOption = FALSE; 414 continue; 415 } 416 } else { 417 if (c != '-' || dashDash) 418 break; 419 inOption = TRUE; 420 c = *optscan++; 421 } 422 /* '-' found at some earlier point */ 423 getopt_spec = strchr(getopt_def, c); 424 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 425 /* -<something> found, and <something> should have an arg */ 426 inOption = FALSE; 427 arginc = 1; 428 argvalue = optscan; 429 if(*argvalue == '\0') { 430 if (argc < 3) 431 goto noarg; 432 argvalue = argv[2]; 433 arginc = 2; 434 } 435 } else { 436 argvalue = NULL; 437 } 438 switch(c) { 439 case '\0': 440 arginc = 1; 441 inOption = FALSE; 442 break; 443 case 'B': 444 compatMake = TRUE; 445 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 446 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 447 break; 448 case 'C': 449 if (chdir(argvalue) == -1) { 450 (void)fprintf(stderr, 451 "%s: chdir %s: %s\n", 452 progname, argvalue, 453 strerror(errno)); 454 exit(1); 455 } 456 if (getcwd(curdir, MAXPATHLEN) == NULL) { 457 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 458 exit(2); 459 } 460 ignorePWD = TRUE; 461 break; 462 case 'D': 463 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 464 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 465 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 466 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 467 break; 468 case 'I': 469 if (argvalue == NULL) goto noarg; 470 Parse_AddIncludeDir(argvalue); 471 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 472 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 473 break; 474 case 'J': 475 if (argvalue == NULL) goto noarg; 476 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 477 (void)fprintf(stderr, 478 "%s: internal error -- J option malformed (%s)\n", 479 progname, argvalue); 480 usage(); 481 } 482 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 483 (fcntl(jp_1, F_GETFD, 0) < 0)) { 484#if 0 485 (void)fprintf(stderr, 486 "%s: ###### warning -- J descriptors were closed!\n", 487 progname); 488 exit(2); 489#endif 490 jp_0 = -1; 491 jp_1 = -1; 492 compatMake = TRUE; 493 } else { 494 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 495 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 496 jobServer = TRUE; 497 } 498 break; 499 case 'N': 500 noExecute = TRUE; 501 noRecursiveExecute = TRUE; 502 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 503 break; 504 case 'S': 505 keepgoing = FALSE; 506 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 507 break; 508 case 'T': 509 if (argvalue == NULL) goto noarg; 510 tracefile = bmake_strdup(argvalue); 511 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 512 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 513 break; 514 case 'V': 515 if (argvalue == NULL) goto noarg; 516 printVars = TRUE; 517 (void)Lst_AtEnd(variables, argvalue); 518 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 519 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 520 break; 521 case 'W': 522 parseWarnFatal = TRUE; 523 break; 524 case 'X': 525 varNoExportEnv = TRUE; 526 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 527 break; 528 case 'd': 529 if (argvalue == NULL) goto noarg; 530 /* If '-d-opts' don't pass to children */ 531 if (argvalue[0] == '-') 532 argvalue++; 533 else { 534 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 535 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 536 } 537 parse_debug_options(argvalue); 538 break; 539 case 'e': 540 checkEnvFirst = TRUE; 541 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 542 break; 543 case 'f': 544 if (argvalue == NULL) goto noarg; 545 (void)Lst_AtEnd(makefiles, argvalue); 546 break; 547 case 'i': 548 ignoreErrors = TRUE; 549 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 550 break; 551 case 'j': 552 if (argvalue == NULL) goto noarg; 553 forceJobs = TRUE; 554 maxJobs = strtol(argvalue, &p, 0); 555 if (*p != '\0' || maxJobs < 1) { 556 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 557 progname); 558 exit(1); 559 } 560 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 561 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 562 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 563 maxJobTokens = maxJobs; 564 break; 565 case 'k': 566 keepgoing = TRUE; 567 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 568 break; 569 case 'm': 570 if (argvalue == NULL) goto noarg; 571 /* look for magic parent directory search string */ 572 if (strncmp(".../", argvalue, 4) == 0) { 573 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 574 found_path, sizeof(found_path))) 575 break; /* nothing doing */ 576 (void)Dir_AddDir(sysIncPath, found_path); 577 } else { 578 (void)Dir_AddDir(sysIncPath, argvalue); 579 } 580 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 581 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 582 break; 583 case 'n': 584 noExecute = TRUE; 585 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 586 break; 587 case 'q': 588 queryFlag = TRUE; 589 /* Kind of nonsensical, wot? */ 590 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 591 break; 592 case 'r': 593 noBuiltins = TRUE; 594 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 595 break; 596 case 's': 597 beSilent = TRUE; 598 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 599 break; 600 case 't': 601 touchFlag = TRUE; 602 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 603 break; 604 case 'w': 605 enterFlag = TRUE; 606 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 607 break; 608 case '-': 609 dashDash = TRUE; 610 break; 611 default: 612 case '?': 613#ifndef MAKE_NATIVE 614 fprintf(stderr, "getopt(%s) -> %d (%c)\n", 615 OPTFLAGS, c, c); 616#endif 617 usage(); 618 } 619 argv += arginc; 620 argc -= arginc; 621 } 622 623 oldVars = TRUE; 624 625 /* 626 * See if the rest of the arguments are variable assignments and 627 * perform them if so. Else take them to be targets and stuff them 628 * on the end of the "create" list. 629 */ 630 for (; argc > 1; ++argv, --argc) 631 if (Parse_IsVar(argv[1])) { 632 Parse_DoVar(argv[1], VAR_CMD); 633 } else { 634 if (!*argv[1]) 635 Punt("illegal (null) argument."); 636 if (*argv[1] == '-' && !dashDash) 637 goto rearg; 638 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 639 } 640 641 return; 642noarg: 643 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 644 progname, c); 645 usage(); 646} 647 648/*- 649 * Main_ParseArgLine -- 650 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 651 * is encountered and by main() when reading the .MAKEFLAGS envariable. 652 * Takes a line of arguments and breaks it into its 653 * component words and passes those words and the number of them to the 654 * MainParseArgs function. 655 * The line should have all its leading whitespace removed. 656 * 657 * Input: 658 * line Line to fracture 659 * 660 * Results: 661 * None 662 * 663 * Side Effects: 664 * Only those that come from the various arguments. 665 */ 666void 667Main_ParseArgLine(const char *line) 668{ 669 char **argv; /* Manufactured argument vector */ 670 int argc; /* Number of arguments in argv */ 671 char *args; /* Space used by the args */ 672 char *buf, *p1; 673 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 674 size_t len; 675 676 if (line == NULL) 677 return; 678 for (; *line == ' '; ++line) 679 continue; 680 if (!*line) 681 return; 682 683#ifndef POSIX 684 { 685 /* 686 * $MAKE may simply be naming the make(1) binary 687 */ 688 char *cp; 689 690 if (!(cp = strrchr(line, '/'))) 691 cp = line; 692 if ((cp = strstr(cp, "make")) && 693 strcmp(cp, "make") == 0) 694 return; 695 } 696#endif 697 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 698 (void)snprintf(buf, len, "%s %s", argv0, line); 699 if (p1) 700 free(p1); 701 702 argv = brk_string(buf, &argc, TRUE, &args); 703 if (argv == NULL) { 704 Error("Unterminated quoted string [%s]", buf); 705 free(buf); 706 return; 707 } 708 free(buf); 709 MainParseArgs(argc, argv); 710 711 free(args); 712 free(argv); 713} 714 715Boolean 716Main_SetObjdir(const char *path) 717{ 718 struct stat sb; 719 char *p = NULL; 720 char buf[MAXPATHLEN + 1]; 721 Boolean rc = FALSE; 722 723 /* expand variable substitutions */ 724 if (strchr(path, '$') != 0) { 725 snprintf(buf, MAXPATHLEN, "%s", path); 726 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, FALSE, TRUE); 727 } 728 729 if (path[0] != '/') { 730 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 731 path = buf; 732 } 733 734 /* look for the directory and try to chdir there */ 735 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 736 if (chdir(path)) { 737 (void)fprintf(stderr, "make warning: %s: %s.\n", 738 path, strerror(errno)); 739 } else { 740 strncpy(objdir, path, MAXPATHLEN); 741 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 742 setenv("PWD", objdir, 1); 743 Dir_InitDot(); 744 rc = TRUE; 745 if (enterFlag && strcmp(objdir, curdir) != 0) 746 enterFlagObj = TRUE; 747 } 748 } 749 750 if (p) 751 free(p); 752 return rc; 753} 754 755/*- 756 * ReadAllMakefiles -- 757 * wrapper around ReadMakefile() to read all. 758 * 759 * Results: 760 * TRUE if ok, FALSE on error 761 */ 762static int 763ReadAllMakefiles(const void *p, const void *q) 764{ 765 return (ReadMakefile(p, q) == 0); 766} 767 768int 769str2Lst_Append(Lst lp, char *str, const char *sep) 770{ 771 char *cp; 772 int n; 773 774 if (!sep) 775 sep = " \t"; 776 777 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 778 (void)Lst_AtEnd(lp, cp); 779 n++; 780 } 781 return (n); 782} 783 784#ifdef SIGINFO 785/*ARGSUSED*/ 786static void 787siginfo(int signo MAKE_ATTR_UNUSED) 788{ 789 char dir[MAXPATHLEN]; 790 char str[2 * MAXPATHLEN]; 791 int len; 792 if (getcwd(dir, sizeof(dir)) == NULL) 793 return; 794 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 795 if (len > 0) 796 (void)write(STDERR_FILENO, str, (size_t)len); 797} 798#endif 799 800/* 801 * Allow makefiles some control over the mode we run in. 802 */ 803void 804MakeMode(const char *mode) 805{ 806 char *mp = NULL; 807 808 if (!mode) 809 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 810 VAR_GLOBAL, FALSE, TRUE); 811 812 if (mode && *mode) { 813 if (strstr(mode, "compat")) { 814 compatMake = TRUE; 815 forceJobs = FALSE; 816 } 817#if USE_META 818 if (strstr(mode, "meta")) 819 meta_mode_init(mode); 820#endif 821 } 822 if (mp) 823 free(mp); 824} 825 826/*- 827 * main -- 828 * The main function, for obvious reasons. Initializes variables 829 * and a few modules, then parses the arguments give it in the 830 * environment and on the command line. Reads the system makefile 831 * followed by either Makefile, makefile or the file given by the 832 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 833 * flags it has received by then uses either the Make or the Compat 834 * module to create the initial list of targets. 835 * 836 * Results: 837 * If -q was given, exits -1 if anything was out-of-date. Else it exits 838 * 0. 839 * 840 * Side Effects: 841 * The program exits when done. Targets are created. etc. etc. etc. 842 */ 843int 844main(int argc, char **argv) 845{ 846 Lst targs; /* target nodes to create -- passed to Make_Init */ 847 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 848 struct stat sb, sa; 849 char *p1, *path; 850 char mdpath[MAXPATHLEN]; 851#ifdef FORCE_MACHINE 852 const char *machine = FORCE_MACHINE; 853#else 854 const char *machine = getenv("MACHINE"); 855#endif 856 const char *machine_arch = getenv("MACHINE_ARCH"); 857 char *syspath = getenv("MAKESYSPATH"); 858 Lst sysMkPath; /* Path of sys.mk */ 859 char *cp = NULL, *start; 860 /* avoid faults on read-only strings */ 861 static char defsyspath[] = _PATH_DEFSYSPATH; 862 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 863 struct timeval rightnow; /* to initialize random seed */ 864 struct utsname utsname; 865 866 /* default to writing debug to stderr */ 867 debug_file = stderr; 868 869#ifdef SIGINFO 870 (void)bmake_signal(SIGINFO, siginfo); 871#endif 872 /* 873 * Set the seed to produce a different random sequence 874 * on each program execution. 875 */ 876 gettimeofday(&rightnow, NULL); 877 srandom(rightnow.tv_sec + rightnow.tv_usec); 878 879 if ((progname = strrchr(argv[0], '/')) != NULL) 880 progname++; 881 else 882 progname = argv[0]; 883#if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 884 /* 885 * get rid of resource limit on file descriptors 886 */ 887 { 888 struct rlimit rl; 889 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 890 rl.rlim_cur != rl.rlim_max) { 891 rl.rlim_cur = rl.rlim_max; 892 (void)setrlimit(RLIMIT_NOFILE, &rl); 893 } 894 } 895#endif 896 897 if (uname(&utsname) == -1) { 898 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 899 strerror(errno)); 900 exit(2); 901 } 902 903 /* 904 * Get the name of this type of MACHINE from utsname 905 * so we can share an executable for similar machines. 906 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 907 * 908 * Note that both MACHINE and MACHINE_ARCH are decided at 909 * run-time. 910 */ 911 if (!machine) { 912#ifdef MAKE_NATIVE 913 machine = utsname.machine; 914#else 915#ifdef MAKE_MACHINE 916 machine = MAKE_MACHINE; 917#else 918 machine = "unknown"; 919#endif 920#endif 921 } 922 923 if (!machine_arch) { 924#if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH) 925 static char machine_arch_buf[sizeof(utsname.machine)]; 926 int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 927 size_t len = sizeof(machine_arch_buf); 928 929 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 930 &len, NULL, 0) < 0) { 931 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 932 strerror(errno)); 933 exit(2); 934 } 935 936 machine_arch = machine_arch_buf; 937#else 938#ifndef MACHINE_ARCH 939#ifdef MAKE_MACHINE_ARCH 940 machine_arch = MAKE_MACHINE_ARCH; 941#else 942 machine_arch = "unknown"; 943#endif 944#else 945 machine_arch = MACHINE_ARCH; 946#endif 947#endif 948 } 949 950 myPid = getpid(); /* remember this for vFork() */ 951 952 /* 953 * Just in case MAKEOBJDIR wants us to do something tricky. 954 */ 955 Var_Init(); /* Initialize the lists of variables for 956 * parsing arguments */ 957 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 958 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 959 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 960#ifdef MAKE_VERSION 961 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 962#endif 963 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 964 /* 965 * This is the traditional preference for makefiles. 966 */ 967#ifndef MAKEFILE_PREFERENCE_LIST 968# define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 969#endif 970 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 971 VAR_GLOBAL, 0); 972 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 973 974 create = Lst_Init(FALSE); 975 makefiles = Lst_Init(FALSE); 976 printVars = FALSE; 977 debugVflag = FALSE; 978 variables = Lst_Init(FALSE); 979 beSilent = FALSE; /* Print commands as executed */ 980 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 981 noExecute = FALSE; /* Execute all commands */ 982 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 983 keepgoing = FALSE; /* Stop on error */ 984 allPrecious = FALSE; /* Remove targets when interrupted */ 985 queryFlag = FALSE; /* This is not just a check-run */ 986 noBuiltins = FALSE; /* Read the built-in rules */ 987 touchFlag = FALSE; /* Actually update targets */ 988 debug = 0; /* No debug verbosity, please. */ 989 jobsRunning = FALSE; 990 991 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 992 maxJobTokens = maxJobs; 993 compatMake = FALSE; /* No compat mode */ 994 ignorePWD = FALSE; 995 996 /* 997 * Initialize the parsing, directory and variable modules to prepare 998 * for the reading of inclusion paths and variable settings on the 999 * command line 1000 */ 1001 1002 /* 1003 * Initialize various variables. 1004 * MAKE also gets this name, for compatibility 1005 * .MAKEFLAGS gets set to the empty string just in case. 1006 * MFLAGS also gets initialized empty, for compatibility. 1007 */ 1008 Parse_Init(); 1009 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1010 /* 1011 * Leave alone if it is an absolute path, or if it does 1012 * not contain a '/' in which case we need to find it in 1013 * the path, like execvp(3) and the shells do. 1014 */ 1015 p1 = argv[0]; 1016 } else { 1017 /* 1018 * A relative path, canonicalize it. 1019 */ 1020 p1 = realpath(argv[0], mdpath); 1021 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1022 p1 = argv[0]; /* realpath failed */ 1023 } 1024 } 1025 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1026 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1027 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1028 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1029 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1030 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1031 /* some makefiles need to know this */ 1032 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1033 1034 /* 1035 * Set some other useful macros 1036 */ 1037 { 1038 char tmp[64], *ep; 1039 1040 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1041 if (makelevel < 0) 1042 makelevel = 0; 1043 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1044 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1045 snprintf(tmp, sizeof(tmp), "%u", myPid); 1046 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1047 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1048 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1049 } 1050 if (makelevel > 0) { 1051 char pn[1024]; 1052 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1053 progname = bmake_strdup(pn); 1054 } 1055 1056#ifdef USE_META 1057 meta_init(); 1058#endif 1059 /* 1060 * First snag any flags out of the MAKE environment variable. 1061 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1062 * in a different format). 1063 */ 1064#ifdef POSIX 1065 p1 = explode(getenv("MAKEFLAGS")); 1066 Main_ParseArgLine(p1); 1067 free(p1); 1068#else 1069 Main_ParseArgLine(getenv("MAKE")); 1070#endif 1071 1072 /* 1073 * Find where we are (now). 1074 * We take care of PWD for the automounter below... 1075 */ 1076 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1077 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1078 progname, strerror(errno)); 1079 exit(2); 1080 } 1081 1082 MainParseArgs(argc, argv); 1083 1084 if (enterFlag) 1085 printf("%s: Entering directory `%s'\n", progname, curdir); 1086 1087 /* 1088 * Verify that cwd is sane. 1089 */ 1090 if (stat(curdir, &sa) == -1) { 1091 (void)fprintf(stderr, "%s: %s: %s.\n", 1092 progname, curdir, strerror(errno)); 1093 exit(2); 1094 } 1095 1096 /* 1097 * All this code is so that we know where we are when we start up 1098 * on a different machine with pmake. 1099 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1100 * since the value of curdir can vary depending on how we got 1101 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1102 * or via subdir.mk in which case its likely a shell which does 1103 * not provide it. 1104 * So, to stop it breaking this case only, we ignore PWD if 1105 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1106 */ 1107#ifndef NO_PWD_OVERRIDE 1108 if (!ignorePWD) { 1109 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1110 1111 if ((pwd = getenv("PWD")) != NULL && 1112 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1113 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1114 VAR_CMD, &ptmp2); 1115 1116 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1117 if (stat(pwd, &sb) == 0 && 1118 sa.st_ino == sb.st_ino && 1119 sa.st_dev == sb.st_dev) 1120 (void)strncpy(curdir, pwd, MAXPATHLEN); 1121 } 1122 } 1123 free(ptmp1); 1124 free(ptmp2); 1125 } 1126#endif 1127 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1128 1129 /* 1130 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1131 * MAKEOBJDIR is set in the environment, try only that value 1132 * and fall back to .CURDIR if it does not exist. 1133 * 1134 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1135 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1136 * of these paths exist, just use .CURDIR. 1137 */ 1138 Dir_Init(curdir); 1139 (void)Main_SetObjdir(curdir); 1140 1141 if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) { 1142 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1143 (void)Main_SetObjdir(mdpath); 1144 free(p1); 1145 } else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) { 1146 (void)Main_SetObjdir(path); 1147 free(p1); 1148 } else { 1149 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1150 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1151 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1152 _PATH_OBJDIRPREFIX, curdir); 1153 (void)Main_SetObjdir(mdpath); 1154 } 1155 } 1156 1157 /* 1158 * Be compatible if user did not specify -j and did not explicitly 1159 * turned compatibility on 1160 */ 1161 if (!compatMake && !forceJobs) { 1162 compatMake = TRUE; 1163 } 1164 1165 /* 1166 * Initialize archive, target and suffix modules in preparation for 1167 * parsing the makefile(s) 1168 */ 1169 Arch_Init(); 1170 Targ_Init(); 1171 Suff_Init(); 1172 Trace_Init(tracefile); 1173 1174 DEFAULT = NULL; 1175 (void)time(&now); 1176 1177 Trace_Log(MAKESTART, NULL); 1178 1179 /* 1180 * Set up the .TARGETS variable to contain the list of targets to be 1181 * created. If none specified, make the variable empty -- the parser 1182 * will fill the thing in with the default or .MAIN target. 1183 */ 1184 if (!Lst_IsEmpty(create)) { 1185 LstNode ln; 1186 1187 for (ln = Lst_First(create); ln != NULL; 1188 ln = Lst_Succ(ln)) { 1189 char *name = (char *)Lst_Datum(ln); 1190 1191 Var_Append(".TARGETS", name, VAR_GLOBAL); 1192 } 1193 } else 1194 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1195 1196 1197 /* 1198 * If no user-supplied system path was given (through the -m option) 1199 * add the directories from the DEFSYSPATH (more than one may be given 1200 * as dir1:...:dirn) to the system include path. 1201 */ 1202 if (syspath == NULL || *syspath == '\0') 1203 syspath = defsyspath; 1204 else 1205 syspath = bmake_strdup(syspath); 1206 1207 for (start = syspath; *start != '\0'; start = cp) { 1208 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1209 continue; 1210 if (*cp == ':') { 1211 *cp++ = '\0'; 1212 } 1213 /* look for magic parent directory search string */ 1214 if (strncmp(".../", start, 4) != 0) { 1215 (void)Dir_AddDir(defIncPath, start); 1216 } else { 1217 if (Dir_FindHereOrAbove(curdir, start+4, 1218 found_path, sizeof(found_path))) { 1219 (void)Dir_AddDir(defIncPath, found_path); 1220 } 1221 } 1222 } 1223 if (syspath != defsyspath) 1224 free(syspath); 1225 1226 /* 1227 * Read in the built-in rules first, followed by the specified 1228 * makefile, if it was (makefile != NULL), or the default 1229 * makefile and Makefile, in that order, if it wasn't. 1230 */ 1231 if (!noBuiltins) { 1232 LstNode ln; 1233 1234 sysMkPath = Lst_Init(FALSE); 1235 Dir_Expand(_PATH_DEFSYSMK, 1236 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1237 sysMkPath); 1238 if (Lst_IsEmpty(sysMkPath)) 1239 Fatal("%s: no system rules (%s).", progname, 1240 _PATH_DEFSYSMK); 1241 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1242 if (ln == NULL) 1243 Fatal("%s: cannot open %s.", progname, 1244 (char *)Lst_Datum(ln)); 1245 } 1246 1247 if (!Lst_IsEmpty(makefiles)) { 1248 LstNode ln; 1249 1250 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1251 if (ln != NULL) 1252 Fatal("%s: cannot open %s.", progname, 1253 (char *)Lst_Datum(ln)); 1254 } else { 1255 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1256 VAR_CMD, FALSE, TRUE); 1257 if (p1) { 1258 (void)str2Lst_Append(makefiles, p1, NULL); 1259 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1260 free(p1); 1261 } 1262 } 1263 1264 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1265 if (!noBuiltins || !printVars) { 1266 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1267 VAR_CMD, FALSE, TRUE); 1268 doing_depend = TRUE; 1269 (void)ReadMakefile(makeDependfile, NULL); 1270 doing_depend = FALSE; 1271 } 1272 1273 if (enterFlagObj) 1274 printf("%s: Entering directory `%s'\n", progname, objdir); 1275 1276 MakeMode(NULL); 1277 1278 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1279 if (p1) 1280 free(p1); 1281 1282 if (!compatMake) 1283 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1284 if (DEBUG(JOB)) 1285 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1286 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1287 1288 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1289 1290 /* 1291 * For compatibility, look at the directories in the VPATH variable 1292 * and add them to the search path, if the variable is defined. The 1293 * variable's value is in the same format as the PATH envariable, i.e. 1294 * <directory>:<directory>:<directory>... 1295 */ 1296 if (Var_Exists("VPATH", VAR_CMD)) { 1297 char *vpath, savec; 1298 /* 1299 * GCC stores string constants in read-only memory, but 1300 * Var_Subst will want to write this thing, so store it 1301 * in an array 1302 */ 1303 static char VPATH[] = "${VPATH}"; 1304 1305 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE, TRUE); 1306 path = vpath; 1307 do { 1308 /* skip to end of directory */ 1309 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1310 continue; 1311 /* Save terminator character so know when to stop */ 1312 savec = *cp; 1313 *cp = '\0'; 1314 /* Add directory to search path */ 1315 (void)Dir_AddDir(dirSearchPath, path); 1316 *cp = savec; 1317 path = cp + 1; 1318 } while (savec == ':'); 1319 free(vpath); 1320 } 1321 1322 /* 1323 * Now that all search paths have been read for suffixes et al, it's 1324 * time to add the default search path to their lists... 1325 */ 1326 Suff_DoPaths(); 1327 1328 /* 1329 * Propagate attributes through :: dependency lists. 1330 */ 1331 Targ_Propagate(); 1332 1333 /* print the initial graph, if the user requested it */ 1334 if (DEBUG(GRAPH1)) 1335 Targ_PrintGraph(1); 1336 1337 /* print the values of any variables requested by the user */ 1338 if (printVars) { 1339 LstNode ln; 1340 Boolean expandVars; 1341 1342 if (debugVflag) 1343 expandVars = FALSE; 1344 else 1345 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1346 for (ln = Lst_First(variables); ln != NULL; 1347 ln = Lst_Succ(ln)) { 1348 char *var = (char *)Lst_Datum(ln); 1349 char *value; 1350 1351 if (strchr(var, '$')) { 1352 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1353 FALSE, TRUE); 1354 } else if (expandVars) { 1355 char tmp[128]; 1356 1357 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1358 Fatal("%s: variable name too big: %s", 1359 progname, var); 1360 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1361 FALSE, TRUE); 1362 } else { 1363 value = Var_Value(var, VAR_GLOBAL, &p1); 1364 } 1365 printf("%s\n", value ? value : ""); 1366 if (p1) 1367 free(p1); 1368 } 1369 } else { 1370 /* 1371 * Have now read the entire graph and need to make a list of 1372 * targets to create. If none was given on the command line, 1373 * we consult the parsing module to find the main target(s) 1374 * to create. 1375 */ 1376 if (Lst_IsEmpty(create)) 1377 targs = Parse_MainName(); 1378 else 1379 targs = Targ_FindList(create, TARG_CREATE); 1380 1381 if (!compatMake) { 1382 /* 1383 * Initialize job module before traversing the graph 1384 * now that any .BEGIN and .END targets have been read. 1385 * This is done only if the -q flag wasn't given 1386 * (to prevent the .BEGIN from being executed should 1387 * it exist). 1388 */ 1389 if (!queryFlag) { 1390 Job_Init(); 1391 jobsRunning = TRUE; 1392 } 1393 1394 /* Traverse the graph, checking on all the targets */ 1395 outOfDate = Make_Run(targs); 1396 } else { 1397 /* 1398 * Compat_Init will take care of creating all the 1399 * targets as well as initializing the module. 1400 */ 1401 Compat_Run(targs); 1402 } 1403 } 1404 1405#ifdef CLEANUP 1406 Lst_Destroy(targs, NULL); 1407 Lst_Destroy(variables, NULL); 1408 Lst_Destroy(makefiles, NULL); 1409 Lst_Destroy(create, (FreeProc *)free); 1410#endif 1411 1412 /* print the graph now it's been processed if the user requested it */ 1413 if (DEBUG(GRAPH2)) 1414 Targ_PrintGraph(2); 1415 1416 Trace_Log(MAKEEND, 0); 1417 1418 if (enterFlagObj) 1419 printf("%s: Leaving directory `%s'\n", progname, objdir); 1420 if (enterFlag) 1421 printf("%s: Leaving directory `%s'\n", progname, curdir); 1422 1423 Suff_End(); 1424 Targ_End(); 1425 Arch_End(); 1426 Var_End(); 1427 Parse_End(); 1428 Dir_End(); 1429 Job_End(); 1430 Trace_End(); 1431 1432 return outOfDate ? 1 : 0; 1433} 1434 1435/*- 1436 * ReadMakefile -- 1437 * Open and parse the given makefile. 1438 * 1439 * Results: 1440 * 0 if ok. -1 if couldn't open file. 1441 * 1442 * Side Effects: 1443 * lots 1444 */ 1445static int 1446ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1447{ 1448 const char *fname = p; /* makefile to read */ 1449 int fd; 1450 size_t len = MAXPATHLEN; 1451 char *name, *path = bmake_malloc(len); 1452 1453 if (!strcmp(fname, "-")) { 1454 Parse_File(NULL /*stdin*/, -1); 1455 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1456 } else { 1457 /* if we've chdir'd, rebuild the path name */ 1458 if (strcmp(curdir, objdir) && *fname != '/') { 1459 size_t plen = strlen(curdir) + strlen(fname) + 2; 1460 if (len < plen) 1461 path = bmake_realloc(path, len = 2 * plen); 1462 1463 (void)snprintf(path, len, "%s/%s", curdir, fname); 1464 fd = open(path, O_RDONLY); 1465 if (fd != -1) { 1466 fname = path; 1467 goto found; 1468 } 1469 1470 /* If curdir failed, try objdir (ala .depend) */ 1471 plen = strlen(objdir) + strlen(fname) + 2; 1472 if (len < plen) 1473 path = bmake_realloc(path, len = 2 * plen); 1474 (void)snprintf(path, len, "%s/%s", objdir, fname); 1475 fd = open(path, O_RDONLY); 1476 if (fd != -1) { 1477 fname = path; 1478 goto found; 1479 } 1480 } else { 1481 fd = open(fname, O_RDONLY); 1482 if (fd != -1) 1483 goto found; 1484 } 1485 /* look in -I and system include directories. */ 1486 name = Dir_FindFile(fname, parseIncPath); 1487 if (!name) 1488 name = Dir_FindFile(fname, 1489 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1490 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1491 if (name) 1492 free(name); 1493 free(path); 1494 return(-1); 1495 } 1496 fname = name; 1497 /* 1498 * set the MAKEFILE variable desired by System V fans -- the 1499 * placement of the setting here means it gets set to the last 1500 * makefile specified, as it is set by SysV make. 1501 */ 1502found: 1503 if (!doing_depend) 1504 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1505 Parse_File(fname, fd); 1506 } 1507 free(path); 1508 return(0); 1509} 1510 1511 1512 1513/*- 1514 * Cmd_Exec -- 1515 * Execute the command in cmd, and return the output of that command 1516 * in a string. 1517 * 1518 * Results: 1519 * A string containing the output of the command, or the empty string 1520 * If errnum is not NULL, it contains the reason for the command failure 1521 * 1522 * Side Effects: 1523 * The string must be freed by the caller. 1524 */ 1525char * 1526Cmd_Exec(const char *cmd, const char **errnum) 1527{ 1528 const char *args[4]; /* Args for invoking the shell */ 1529 int fds[2]; /* Pipe streams */ 1530 int cpid; /* Child PID */ 1531 int pid; /* PID from wait() */ 1532 char *res; /* result */ 1533 WAIT_T status; /* command exit status */ 1534 Buffer buf; /* buffer to store the result */ 1535 char *cp; 1536 int cc; /* bytes read, or -1 */ 1537 int savederr; /* saved errno */ 1538 1539 1540 *errnum = NULL; 1541 1542 if (!shellName) 1543 Shell_Init(); 1544 /* 1545 * Set up arguments for shell 1546 */ 1547 args[0] = shellName; 1548 args[1] = "-c"; 1549 args[2] = cmd; 1550 args[3] = NULL; 1551 1552 /* 1553 * Open a pipe for fetching its output 1554 */ 1555 if (pipe(fds) == -1) { 1556 *errnum = "Couldn't create pipe for \"%s\""; 1557 goto bad; 1558 } 1559 1560 /* 1561 * Fork 1562 */ 1563 switch (cpid = vFork()) { 1564 case 0: 1565 /* 1566 * Close input side of pipe 1567 */ 1568 (void)close(fds[0]); 1569 1570 /* 1571 * Duplicate the output stream to the shell's output, then 1572 * shut the extra thing down. Note we don't fetch the error 1573 * stream...why not? Why? 1574 */ 1575 (void)dup2(fds[1], 1); 1576 (void)close(fds[1]); 1577 1578 Var_ExportVars(); 1579 1580 (void)execv(shellPath, UNCONST(args)); 1581 _exit(1); 1582 /*NOTREACHED*/ 1583 1584 case -1: 1585 *errnum = "Couldn't exec \"%s\""; 1586 goto bad; 1587 1588 default: 1589 /* 1590 * No need for the writing half 1591 */ 1592 (void)close(fds[1]); 1593 1594 savederr = 0; 1595 Buf_Init(&buf, 0); 1596 1597 do { 1598 char result[BUFSIZ]; 1599 cc = read(fds[0], result, sizeof(result)); 1600 if (cc > 0) 1601 Buf_AddBytes(&buf, cc, result); 1602 } 1603 while (cc > 0 || (cc == -1 && errno == EINTR)); 1604 if (cc == -1) 1605 savederr = errno; 1606 1607 /* 1608 * Close the input side of the pipe. 1609 */ 1610 (void)close(fds[0]); 1611 1612 /* 1613 * Wait for the process to exit. 1614 */ 1615 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1616 JobReapChild(pid, status, FALSE); 1617 continue; 1618 } 1619 cc = Buf_Size(&buf); 1620 res = Buf_Destroy(&buf, FALSE); 1621 1622 if (savederr != 0) 1623 *errnum = "Couldn't read shell's output for \"%s\""; 1624 1625 if (WIFSIGNALED(status)) 1626 *errnum = "\"%s\" exited on a signal"; 1627 else if (WEXITSTATUS(status) != 0) 1628 *errnum = "\"%s\" returned non-zero status"; 1629 1630 /* 1631 * Null-terminate the result, convert newlines to spaces and 1632 * install it in the variable. 1633 */ 1634 res[cc] = '\0'; 1635 cp = &res[cc]; 1636 1637 if (cc > 0 && *--cp == '\n') { 1638 /* 1639 * A final newline is just stripped 1640 */ 1641 *cp-- = '\0'; 1642 } 1643 while (cp >= res) { 1644 if (*cp == '\n') { 1645 *cp = ' '; 1646 } 1647 cp--; 1648 } 1649 break; 1650 } 1651 return res; 1652bad: 1653 res = bmake_malloc(1); 1654 *res = '\0'; 1655 return res; 1656} 1657 1658/*- 1659 * Error -- 1660 * Print an error message given its format. 1661 * 1662 * Results: 1663 * None. 1664 * 1665 * Side Effects: 1666 * The message is printed. 1667 */ 1668/* VARARGS */ 1669void 1670Error(const char *fmt, ...) 1671{ 1672 va_list ap; 1673 FILE *err_file; 1674 1675 err_file = debug_file; 1676 if (err_file == stdout) 1677 err_file = stderr; 1678 (void)fflush(stdout); 1679 for (;;) { 1680 va_start(ap, fmt); 1681 fprintf(err_file, "%s: ", progname); 1682 (void)vfprintf(err_file, fmt, ap); 1683 va_end(ap); 1684 (void)fprintf(err_file, "\n"); 1685 (void)fflush(err_file); 1686 if (err_file == stderr) 1687 break; 1688 err_file = stderr; 1689 } 1690} 1691 1692/*- 1693 * Fatal -- 1694 * Produce a Fatal error message. If jobs are running, waits for them 1695 * to finish. 1696 * 1697 * Results: 1698 * None 1699 * 1700 * Side Effects: 1701 * The program exits 1702 */ 1703/* VARARGS */ 1704void 1705Fatal(const char *fmt, ...) 1706{ 1707 va_list ap; 1708 1709 va_start(ap, fmt); 1710 if (jobsRunning) 1711 Job_Wait(); 1712 1713 (void)fflush(stdout); 1714 (void)vfprintf(stderr, fmt, ap); 1715 va_end(ap); 1716 (void)fprintf(stderr, "\n"); 1717 (void)fflush(stderr); 1718 1719 PrintOnError(NULL, NULL); 1720 1721 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1722 Targ_PrintGraph(2); 1723 Trace_Log(MAKEERROR, 0); 1724 exit(2); /* Not 1 so -q can distinguish error */ 1725} 1726 1727/* 1728 * Punt -- 1729 * Major exception once jobs are being created. Kills all jobs, prints 1730 * a message and exits. 1731 * 1732 * Results: 1733 * None 1734 * 1735 * Side Effects: 1736 * All children are killed indiscriminately and the program Lib_Exits 1737 */ 1738/* VARARGS */ 1739void 1740Punt(const char *fmt, ...) 1741{ 1742 va_list ap; 1743 1744 va_start(ap, fmt); 1745 (void)fflush(stdout); 1746 (void)fprintf(stderr, "%s: ", progname); 1747 (void)vfprintf(stderr, fmt, ap); 1748 va_end(ap); 1749 (void)fprintf(stderr, "\n"); 1750 (void)fflush(stderr); 1751 1752 PrintOnError(NULL, NULL); 1753 1754 DieHorribly(); 1755} 1756 1757/*- 1758 * DieHorribly -- 1759 * Exit without giving a message. 1760 * 1761 * Results: 1762 * None 1763 * 1764 * Side Effects: 1765 * A big one... 1766 */ 1767void 1768DieHorribly(void) 1769{ 1770 if (jobsRunning) 1771 Job_AbortAll(); 1772 if (DEBUG(GRAPH2)) 1773 Targ_PrintGraph(2); 1774 Trace_Log(MAKEERROR, 0); 1775 exit(2); /* Not 1, so -q can distinguish error */ 1776} 1777 1778/* 1779 * Finish -- 1780 * Called when aborting due to errors in child shell to signal 1781 * abnormal exit. 1782 * 1783 * Results: 1784 * None 1785 * 1786 * Side Effects: 1787 * The program exits 1788 */ 1789void 1790Finish(int errors) 1791 /* number of errors encountered in Make_Make */ 1792{ 1793 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1794} 1795 1796/* 1797 * eunlink -- 1798 * Remove a file carefully, avoiding directories. 1799 */ 1800int 1801eunlink(const char *file) 1802{ 1803 struct stat st; 1804 1805 if (lstat(file, &st) == -1) 1806 return -1; 1807 1808 if (S_ISDIR(st.st_mode)) { 1809 errno = EISDIR; 1810 return -1; 1811 } 1812 return unlink(file); 1813} 1814 1815/* 1816 * execError -- 1817 * Print why exec failed, avoiding stdio. 1818 */ 1819void 1820execError(const char *af, const char *av) 1821{ 1822#ifdef USE_IOVEC 1823 int i = 0; 1824 struct iovec iov[8]; 1825#define IOADD(s) \ 1826 (void)(iov[i].iov_base = UNCONST(s), \ 1827 iov[i].iov_len = strlen(iov[i].iov_base), \ 1828 i++) 1829#else 1830#define IOADD(s) (void)write(2, s, strlen(s)) 1831#endif 1832 1833 IOADD(progname); 1834 IOADD(": "); 1835 IOADD(af); 1836 IOADD("("); 1837 IOADD(av); 1838 IOADD(") failed ("); 1839 IOADD(strerror(errno)); 1840 IOADD(")\n"); 1841 1842#ifdef USE_IOVEC 1843 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1844 continue; 1845#endif 1846} 1847 1848/* 1849 * usage -- 1850 * exit with usage message 1851 */ 1852static void 1853usage(void) 1854{ 1855 char *p; 1856 if ((p = strchr(progname, '[')) != NULL) 1857 *p = '\0'; 1858 1859 (void)fprintf(stderr, 1860"usage: %s [-BeikNnqrstWwX] \n\ 1861 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1862 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1863 [-V variable] [variable=value] [target ...]\n", progname); 1864 exit(2); 1865} 1866 1867 1868int 1869PrintAddr(void *a, void *b) 1870{ 1871 printf("%lx ", (unsigned long) a); 1872 return b ? 0 : 0; 1873} 1874 1875 1876 1877void 1878PrintOnError(GNode *gn, const char *s) 1879{ 1880 static GNode *en = NULL; 1881 char tmp[64]; 1882 char *cp; 1883 1884 if (s) 1885 printf("%s", s); 1886 1887 printf("\n%s: stopped in %s\n", progname, curdir); 1888 1889 if (en) 1890 return; /* we've been here! */ 1891 if (gn) { 1892 /* 1893 * We can print this even if there is no .ERROR target. 1894 */ 1895 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1896 } 1897 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1898 sizeof(tmp) - 1); 1899 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, FALSE, TRUE); 1900 if (cp) { 1901 if (*cp) 1902 printf("%s", cp); 1903 free(cp); 1904 } 1905 fflush(stdout); 1906 1907 /* 1908 * Finally, see if there is a .ERROR target, and run it if so. 1909 */ 1910 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1911 if (en) { 1912 en->type |= OP_SPECIAL; 1913 Compat_Make(en, en); 1914 } 1915} 1916 1917void 1918Main_ExportMAKEFLAGS(Boolean first) 1919{ 1920 static int once = 1; 1921 char tmp[64]; 1922 char *s; 1923 1924 if (once != first) 1925 return; 1926 once = 0; 1927 1928 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1929 sizeof(tmp)); 1930 s = Var_Subst(NULL, tmp, VAR_CMD, FALSE, TRUE); 1931 if (s && *s) { 1932#ifdef POSIX 1933 setenv("MAKEFLAGS", s, 1); 1934#else 1935 setenv("MAKE", s, 1); 1936#endif 1937 } 1938} 1939 1940char * 1941getTmpdir(void) 1942{ 1943 static char *tmpdir = NULL; 1944 1945 if (!tmpdir) { 1946 struct stat st; 1947 1948 /* 1949 * Honor $TMPDIR but only if it is valid. 1950 * Ensure it ends with /. 1951 */ 1952 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 1953 FALSE, TRUE); 1954 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1955 free(tmpdir); 1956 tmpdir = bmake_strdup(_PATH_TMP); 1957 } 1958 } 1959 return tmpdir; 1960} 1961 1962/* 1963 * Create and open a temp file using "pattern". 1964 * If "fnamep" is provided set it to a copy of the filename created. 1965 * Otherwise unlink the file once open. 1966 */ 1967int 1968mkTempFile(const char *pattern, char **fnamep) 1969{ 1970 static char *tmpdir = NULL; 1971 char tfile[MAXPATHLEN]; 1972 int fd; 1973 1974 if (!pattern) 1975 pattern = TMPPAT; 1976 if (!tmpdir) 1977 tmpdir = getTmpdir(); 1978 if (pattern[0] == '/') { 1979 snprintf(tfile, sizeof(tfile), "%s", pattern); 1980 } else { 1981 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1982 } 1983 if ((fd = mkstemp(tfile)) < 0) 1984 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1985 if (fnamep) { 1986 *fnamep = bmake_strdup(tfile); 1987 } else { 1988 unlink(tfile); /* we just want the descriptor */ 1989 } 1990 return fd; 1991} 1992 1993 1994/* 1995 * Return a Boolean based on setting of a knob. 1996 * 1997 * If the knob is not set, the supplied default is the return value. 1998 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1999 * is FALSE, otherwise TRUE. 2000 */ 2001Boolean 2002getBoolean(const char *name, Boolean bf) 2003{ 2004 char tmp[64]; 2005 char *cp; 2006 2007 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 2008 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, FALSE, TRUE); 2009 2010 if (cp) { 2011 switch(*cp) { 2012 case '\0': /* not set - the default wins */ 2013 break; 2014 case '0': 2015 case 'f': 2016 case 'n': 2017 bf = FALSE; 2018 break; 2019 case 'o': 2020 switch (cp[1]) { 2021 case 'f': 2022 bf = FALSE; 2023 break; 2024 default: 2025 bf = TRUE; 2026 break; 2027 } 2028 break; 2029 default: 2030 bf = TRUE; 2031 break; 2032 } 2033 free(cp); 2034 } 2035 } 2036 return (bf); 2037} 2038