1 /* 2 * Copyright (c) 1988, 1989, 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * Copyright (c) 1989 by Berkeley Softworks 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * %sccs.include.redist.c% 11 */ 12 13 #ifndef lint 14 static char copyright[] = 15 "@(#) Copyright (c) 1988, 1989, 1990, 1993\n\ 16 The Regents of the University of California. All rights reserved.\n"; 17 #endif /* not lint */ 18 19 #ifndef lint 20 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 01/02/94"; 21 #endif /* not lint */ 22 23 /*- 24 * main.c -- 25 * The main file for this entire program. Exit routines etc 26 * reside here. 27 * 28 * Utility functions defined in this file: 29 * Main_ParseArgLine Takes a line of arguments, breaks them and 30 * treats them as if they were given when first 31 * invoked. Used by the parse module to implement 32 * the .MFLAGS target. 33 * 34 * Error Print a tagged error message. The global 35 * MAKE variable must have been defined. This 36 * takes a format string and two optional 37 * arguments for it. 38 * 39 * Fatal Print an error message and exit. Also takes 40 * a format string and two arguments. 41 * 42 * Punt Aborts all jobs and exits with a message. Also 43 * takes a format string and two arguments. 44 * 45 * Finish Finish things up by printing the number of 46 * errors which occured, as passed to it, and 47 * exiting. 48 */ 49 50 #include <sys/types.h> 51 #include <sys/time.h> 52 #include <sys/param.h> 53 #include <sys/resource.h> 54 #include <sys/signal.h> 55 #include <sys/stat.h> 56 #include <errno.h> 57 #include <fcntl.h> 58 #include <stdio.h> 59 #if __STDC__ 60 #include <stdarg.h> 61 #else 62 #include <varargs.h> 63 #endif 64 #include "make.h" 65 #include "hash.h" 66 #include "dir.h" 67 #include "job.h" 68 #include "pathnames.h" 69 70 #ifndef DEFMAXLOCAL 71 #define DEFMAXLOCAL DEFMAXJOBS 72 #endif DEFMAXLOCAL 73 74 #define MAKEFLAGS ".MAKEFLAGS" 75 76 Lst create; /* Targets to be made */ 77 time_t now; /* Time at start of make */ 78 GNode *DEFAULT; /* .DEFAULT node */ 79 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 80 81 static Boolean noBuiltins; /* -r flag */ 82 static Lst makefiles; /* ordered list of makefiles to read */ 83 int maxJobs; /* -J argument */ 84 static int maxLocal; /* -L argument */ 85 Boolean compatMake; /* -B argument */ 86 Boolean debug; /* -d flag */ 87 Boolean noExecute; /* -n flag */ 88 Boolean keepgoing; /* -k flag */ 89 Boolean queryFlag; /* -q flag */ 90 Boolean touchFlag; /* -t flag */ 91 Boolean usePipes; /* !-P flag */ 92 Boolean ignoreErrors; /* -i flag */ 93 Boolean beSilent; /* -s flag */ 94 Boolean oldVars; /* variable substitution style */ 95 Boolean checkEnvFirst; /* -e flag */ 96 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 97 98 static Boolean ReadMakefile(); 99 static void usage(); 100 101 static char *curdir; /* if chdir'd for an architecture */ 102 103 /*- 104 * MainParseArgs -- 105 * Parse a given argument vector. Called from main() and from 106 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 107 * 108 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 109 * 110 * Results: 111 * None 112 * 113 * Side Effects: 114 * Various global and local flags will be set depending on the flags 115 * given 116 */ 117 static void 118 MainParseArgs(argc, argv) 119 int argc; 120 char **argv; 121 { 122 extern int optind; 123 extern char *optarg; 124 int c; 125 126 optind = 1; /* since we're called more than once */ 127 #ifdef notyet 128 # define OPTFLAGS "BD:I:L:PSd:ef:ij:knqrst" 129 #else 130 # define OPTFLAGS "D:I:d:ef:ij:knqrst" 131 #endif 132 rearg: while ((c = getopt(argc, argv, OPTFLAGS)) != EOF) { 133 switch(c) { 134 case 'D': 135 Var_Set(optarg, "1", VAR_GLOBAL); 136 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 137 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 138 break; 139 case 'I': 140 Parse_AddIncludeDir(optarg); 141 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 142 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 143 break; 144 #ifdef notyet 145 case 'B': 146 compatMake = TRUE; 147 break; 148 case 'L': 149 maxLocal = atoi(optarg); 150 Var_Append(MAKEFLAGS, "-L", VAR_GLOBAL); 151 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 152 break; 153 case 'P': 154 usePipes = FALSE; 155 Var_Append(MAKEFLAGS, "-P", VAR_GLOBAL); 156 break; 157 case 'S': 158 keepgoing = FALSE; 159 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 160 break; 161 #endif 162 case 'd': { 163 char *modules = optarg; 164 165 for (; *modules; ++modules) 166 switch (*modules) { 167 case 'A': 168 debug = ~0; 169 break; 170 case 'a': 171 debug |= DEBUG_ARCH; 172 break; 173 case 'c': 174 debug |= DEBUG_COND; 175 break; 176 case 'd': 177 debug |= DEBUG_DIR; 178 break; 179 case 'f': 180 debug |= DEBUG_FOR; 181 break; 182 case 'g': 183 if (modules[1] == '1') { 184 debug |= DEBUG_GRAPH1; 185 ++modules; 186 } 187 else if (modules[1] == '2') { 188 debug |= DEBUG_GRAPH2; 189 ++modules; 190 } 191 break; 192 case 'j': 193 debug |= DEBUG_JOB; 194 break; 195 case 'm': 196 debug |= DEBUG_MAKE; 197 break; 198 case 's': 199 debug |= DEBUG_SUFF; 200 break; 201 case 't': 202 debug |= DEBUG_TARG; 203 break; 204 case 'v': 205 debug |= DEBUG_VAR; 206 break; 207 default: 208 (void)fprintf(stderr, 209 "make: illegal argument to d option -- %c\n", 210 *modules); 211 usage(); 212 } 213 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 214 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 215 break; 216 } 217 case 'e': 218 checkEnvFirst = TRUE; 219 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 220 break; 221 case 'f': 222 (void)Lst_AtEnd(makefiles, (ClientData)optarg); 223 break; 224 case 'i': 225 ignoreErrors = TRUE; 226 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 227 break; 228 case 'j': 229 maxJobs = atoi(optarg); 230 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 231 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 232 break; 233 case 'k': 234 keepgoing = TRUE; 235 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 236 break; 237 case 'n': 238 noExecute = TRUE; 239 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 240 break; 241 case 'q': 242 queryFlag = TRUE; 243 /* Kind of nonsensical, wot? */ 244 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 245 break; 246 case 'r': 247 noBuiltins = TRUE; 248 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 249 break; 250 case 's': 251 beSilent = TRUE; 252 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 253 break; 254 case 't': 255 touchFlag = TRUE; 256 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 257 break; 258 default: 259 case '?': 260 usage(); 261 } 262 } 263 264 oldVars = TRUE; 265 266 /* 267 * See if the rest of the arguments are variable assignments and 268 * perform them if so. Else take them to be targets and stuff them 269 * on the end of the "create" list. 270 */ 271 for (argv += optind, argc -= optind; *argv; ++argv, --argc) 272 if (Parse_IsVar(*argv)) 273 Parse_DoVar(*argv, VAR_CMD); 274 else { 275 if (!*argv[0] || *argv[0] == '-' && !(*argv)[1]) 276 Punt("illegal (null) argument."); 277 if (**argv == '-') { 278 optind = 0; 279 goto rearg; 280 } 281 (void)Lst_AtEnd(create, (ClientData)*argv); 282 } 283 } 284 285 /*- 286 * Main_ParseArgLine -- 287 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 288 * is encountered and by main() when reading the .MAKEFLAGS envariable. 289 * Takes a line of arguments and breaks it into its 290 * component words and passes those words and the number of them to the 291 * MainParseArgs function. 292 * The line should have all its leading whitespace removed. 293 * 294 * Results: 295 * None 296 * 297 * Side Effects: 298 * Only those that come from the various arguments. 299 */ 300 void 301 Main_ParseArgLine(line) 302 char *line; /* Line to fracture */ 303 { 304 char **argv; /* Manufactured argument vector */ 305 int argc; /* Number of arguments in argv */ 306 307 if (line == NULL) 308 return; 309 for (; *line == ' '; ++line) 310 continue; 311 if (!*line) 312 return; 313 314 argv = brk_string(line, &argc); 315 MainParseArgs(argc, argv); 316 } 317 318 /*- 319 * main -- 320 * The main function, for obvious reasons. Initializes variables 321 * and a few modules, then parses the arguments give it in the 322 * environment and on the command line. Reads the system makefile 323 * followed by either Makefile, makefile or the file given by the 324 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 325 * flags it has received by then uses either the Make or the Compat 326 * module to create the initial list of targets. 327 * 328 * Results: 329 * If -q was given, exits -1 if anything was out-of-date. Else it exits 330 * 0. 331 * 332 * Side Effects: 333 * The program exits when done. Targets are created. etc. etc. etc. 334 */ 335 int 336 main(argc, argv) 337 int argc; 338 char **argv; 339 { 340 Lst targs; /* target nodes to create -- passed to Make_Init */ 341 Boolean outOfDate = TRUE; /* FALSE if all targets up to date */ 342 struct stat sb, sa; 343 char *p, *path, *pwd, *getenv(); 344 345 /* 346 * Find where we are and take care of PWD for the automounter... 347 */ 348 curdir = emalloc((u_int)MAXPATHLEN + 1); 349 if (!getwd(curdir)) { 350 (void)fprintf(stderr, "make: %s.\n", curdir); 351 exit(2); 352 } 353 354 if (stat(curdir, &sa) == -1) { 355 (void)fprintf(stderr, "make: %s: %s.\n", 356 curdir, strerror(errno)); 357 exit(2); 358 } 359 360 if ((pwd = getenv("PWD")) != NULL) { 361 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 362 sa.st_dev == sb.st_dev) 363 (void) strcpy(curdir, pwd); 364 } 365 366 367 /* 368 * if the MAKEOBJDIR (or by default, the _PATH_OBJDIR) directory 369 * exists, change into it and build there. Once things are 370 * initted, have to add the original directory to the search path, 371 * and modify the paths for the Makefiles apropriately. The 372 * current directory is also placed as a variable for make scripts. 373 */ 374 if (!(path = getenv("MAKEOBJDIR"))) 375 path = _PATH_OBJDIR; 376 377 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode) && 378 lstat(path, &sb) == 0) { 379 if (chdir(path)) { 380 (void)fprintf(stderr, "make: %s: %s.\n", 381 path, strerror(errno)); 382 exit(2); 383 } 384 if (path[0] != '/') { 385 char cwd[MAXPATHLEN]; 386 (void) sprintf(cwd, "%s/%s", curdir, path); 387 setenv("PWD", cwd, 1); 388 } 389 else 390 setenv("PWD", path, 1); 391 } 392 else { 393 setenv("PWD", curdir, 1); 394 path = "."; 395 } 396 397 create = Lst_Init(FALSE); 398 makefiles = Lst_Init(FALSE); 399 beSilent = FALSE; /* Print commands as executed */ 400 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 401 noExecute = FALSE; /* Execute all commands */ 402 keepgoing = FALSE; /* Stop on error */ 403 allPrecious = FALSE; /* Remove targets when interrupted */ 404 queryFlag = FALSE; /* This is not just a check-run */ 405 noBuiltins = FALSE; /* Read the built-in rules */ 406 touchFlag = FALSE; /* Actually update targets */ 407 usePipes = TRUE; /* Catch child output in pipes */ 408 debug = 0; /* No debug verbosity, please. */ 409 jobsRunning = FALSE; 410 411 maxJobs = DEFMAXJOBS; /* Set default max concurrency */ 412 maxLocal = DEFMAXLOCAL; /* Set default local max concurrency */ 413 #ifdef notyet 414 compatMake = FALSE; /* No compat mode */ 415 #else 416 compatMake = TRUE; /* No compat mode */ 417 #endif 418 419 420 /* 421 * Initialize the parsing, directory and variable modules to prepare 422 * for the reading of inclusion paths and variable settings on the 423 * command line 424 */ 425 Dir_Init(); /* Initialize directory structures so -I flags 426 * can be processed correctly */ 427 Parse_Init(); /* Need to initialize the paths of #include 428 * directories */ 429 Var_Init(); /* As well as the lists of variables for 430 * parsing arguments */ 431 if (curdir) { 432 Dir_AddDir(dirSearchPath, curdir); 433 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 434 } 435 Var_Set(".OBJDIR", path, VAR_GLOBAL); 436 437 /* 438 * Initialize various variables. 439 * MAKE also gets this name, for compatibility 440 * .MAKEFLAGS gets set to the empty string just in case. 441 * MFLAGS also gets initialized empty, for compatibility. 442 */ 443 Var_Set("MAKE", argv[0], VAR_GLOBAL); 444 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 445 Var_Set("MFLAGS", "", VAR_GLOBAL); 446 Var_Set("MACHINE", MACHINE, VAR_GLOBAL); 447 448 /* 449 * First snag any flags out of the MAKE environment variable. 450 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 451 * in a different format). 452 */ 453 #ifdef POSIX 454 Main_ParseArgLine(getenv("MAKEFLAGS")); 455 #else 456 Main_ParseArgLine(getenv("MAKE")); 457 #endif 458 459 MainParseArgs(argc, argv); 460 461 /* 462 * Initialize archive, target and suffix modules in preparation for 463 * parsing the makefile(s) 464 */ 465 Arch_Init(); 466 Targ_Init(); 467 Suff_Init(); 468 469 DEFAULT = NILGNODE; 470 (void)time(&now); 471 472 /* 473 * Set up the .TARGETS variable to contain the list of targets to be 474 * created. If none specified, make the variable empty -- the parser 475 * will fill the thing in with the default or .MAIN target. 476 */ 477 if (!Lst_IsEmpty(create)) { 478 LstNode ln; 479 480 for (ln = Lst_First(create); ln != NILLNODE; 481 ln = Lst_Succ(ln)) { 482 char *name = (char *)Lst_Datum(ln); 483 484 Var_Append(".TARGETS", name, VAR_GLOBAL); 485 } 486 } else 487 Var_Set(".TARGETS", "", VAR_GLOBAL); 488 489 /* 490 * Read in the built-in rules first, followed by the specified makefile, 491 * if it was (makefile != (char *) NULL), or the default Makefile and 492 * makefile, in that order, if it wasn't. 493 */ 494 if (!noBuiltins && !ReadMakefile(_PATH_DEFSYSMK)) 495 Fatal("make: no system rules (%s).", _PATH_DEFSYSMK); 496 497 if (!Lst_IsEmpty(makefiles)) { 498 LstNode ln; 499 500 ln = Lst_Find(makefiles, (ClientData)NULL, ReadMakefile); 501 if (ln != NILLNODE) 502 Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); 503 } else if (!ReadMakefile("makefile")) 504 (void)ReadMakefile("Makefile"); 505 506 (void)ReadMakefile(".depend"); 507 508 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL), VAR_GLOBAL); 509 510 /* Install all the flags into the MAKE envariable. */ 511 if (((p = Var_Value(MAKEFLAGS, VAR_GLOBAL)) != NULL) && *p) 512 #ifdef POSIX 513 setenv("MAKEFLAGS", p, 1); 514 #else 515 setenv("MAKE", p, 1); 516 #endif 517 518 /* 519 * For compatibility, look at the directories in the VPATH variable 520 * and add them to the search path, if the variable is defined. The 521 * variable's value is in the same format as the PATH envariable, i.e. 522 * <directory>:<directory>:<directory>... 523 */ 524 if (Var_Exists("VPATH", VAR_CMD)) { 525 char *vpath, *path, *cp, savec; 526 /* 527 * GCC stores string constants in read-only memory, but 528 * Var_Subst will want to write this thing, so store it 529 * in an array 530 */ 531 static char VPATH[] = "${VPATH}"; 532 533 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 534 path = vpath; 535 do { 536 /* skip to end of directory */ 537 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 538 continue; 539 /* Save terminator character so know when to stop */ 540 savec = *cp; 541 *cp = '\0'; 542 /* Add directory to search path */ 543 Dir_AddDir(dirSearchPath, path); 544 *cp = savec; 545 path = cp + 1; 546 } while (savec == ':'); 547 (void)free((Address)vpath); 548 } 549 550 /* 551 * Now that all search paths have been read for suffixes et al, it's 552 * time to add the default search path to their lists... 553 */ 554 Suff_DoPaths(); 555 556 /* print the initial graph, if the user requested it */ 557 if (DEBUG(GRAPH1)) 558 Targ_PrintGraph(1); 559 560 /* 561 * Have now read the entire graph and need to make a list of targets 562 * to create. If none was given on the command line, we consult the 563 * parsing module to find the main target(s) to create. 564 */ 565 if (Lst_IsEmpty(create)) 566 targs = Parse_MainName(); 567 else 568 targs = Targ_FindList(create, TARG_CREATE); 569 570 /* 571 * this was original amMake -- want to allow parallelism, so put this 572 * back in, eventually. 573 */ 574 if (!compatMake) { 575 /* 576 * Initialize job module before traversing the graph, now that 577 * any .BEGIN and .END targets have been read. This is done 578 * only if the -q flag wasn't given (to prevent the .BEGIN from 579 * being executed should it exist). 580 */ 581 if (!queryFlag) { 582 if (maxLocal == -1) 583 maxLocal = maxJobs; 584 Job_Init(maxJobs, maxLocal); 585 jobsRunning = TRUE; 586 } 587 588 /* Traverse the graph, checking on all the targets */ 589 outOfDate = Make_Run(targs); 590 } else 591 /* 592 * Compat_Init will take care of creating all the targets as 593 * well as initializing the module. 594 */ 595 Compat_Run(targs); 596 597 /* print the graph now it's been processed if the user requested it */ 598 if (DEBUG(GRAPH2)) 599 Targ_PrintGraph(2); 600 601 if (queryFlag && outOfDate) 602 return(1); 603 else 604 return(0); 605 } 606 607 /*- 608 * ReadMakefile -- 609 * Open and parse the given makefile. 610 * 611 * Results: 612 * TRUE if ok. FALSE if couldn't open file. 613 * 614 * Side Effects: 615 * lots 616 */ 617 static Boolean 618 ReadMakefile(fname) 619 char *fname; /* makefile to read */ 620 { 621 extern Lst parseIncPath, sysIncPath; 622 FILE *stream; 623 char *name, path[MAXPATHLEN + 1]; 624 625 if (!strcmp(fname, "-")) { 626 Parse_File("(stdin)", stdin); 627 Var_Set("MAKEFILE", "", VAR_GLOBAL); 628 } else { 629 if ((stream = fopen(fname, "r")) != NULL) 630 goto found; 631 /* if we've chdir'd, rebuild the path name */ 632 if (curdir && *fname != '/') { 633 (void)sprintf(path, "%s/%s", curdir, fname); 634 if ((stream = fopen(path, "r")) != NULL) { 635 fname = path; 636 goto found; 637 } 638 } 639 /* look in -I and system include directories. */ 640 name = Dir_FindFile(fname, parseIncPath); 641 if (!name) 642 name = Dir_FindFile(fname, sysIncPath); 643 if (!name || !(stream = fopen(name, "r"))) 644 return(FALSE); 645 fname = name; 646 /* 647 * set the MAKEFILE variable desired by System V fans -- the 648 * placement of the setting here means it gets set to the last 649 * makefile specified, as it is set by SysV make. 650 */ 651 found: Var_Set("MAKEFILE", fname, VAR_GLOBAL); 652 Parse_File(fname, stream); 653 (void)fclose(stream); 654 } 655 return(TRUE); 656 } 657 658 /*- 659 * Error -- 660 * Print an error message given its format. 661 * 662 * Results: 663 * None. 664 * 665 * Side Effects: 666 * The message is printed. 667 */ 668 /* VARARGS */ 669 void 670 #if __STDC__ 671 Error(const char *fmt, ...) 672 #else 673 Error(fmt, va_alist) 674 char *fmt; 675 va_dcl 676 #endif 677 { 678 va_list ap; 679 #if __STDC__ 680 va_start(ap, fmt); 681 #else 682 va_start(ap); 683 #endif 684 (void)vfprintf(stderr, fmt, ap); 685 va_end(ap); 686 (void)fprintf(stderr, "\n"); 687 (void)fflush(stderr); 688 } 689 690 /*- 691 * Fatal -- 692 * Produce a Fatal error message. If jobs are running, waits for them 693 * to finish. 694 * 695 * Results: 696 * None 697 * 698 * Side Effects: 699 * The program exits 700 */ 701 /* VARARGS */ 702 void 703 #if __STDC__ 704 Fatal(const char *fmt, ...) 705 #else 706 Fatal(fmt, va_alist) 707 char *fmt; 708 va_dcl 709 #endif 710 { 711 va_list ap; 712 #if __STDC__ 713 va_start(ap, fmt); 714 #else 715 va_start(ap); 716 #endif 717 if (jobsRunning) 718 Job_Wait(); 719 720 (void)vfprintf(stderr, fmt, ap); 721 va_end(ap); 722 (void)fprintf(stderr, "\n"); 723 (void)fflush(stderr); 724 725 if (DEBUG(GRAPH2)) 726 Targ_PrintGraph(2); 727 exit(2); /* Not 1 so -q can distinguish error */ 728 } 729 730 /* 731 * Punt -- 732 * Major exception once jobs are being created. Kills all jobs, prints 733 * a message and exits. 734 * 735 * Results: 736 * None 737 * 738 * Side Effects: 739 * All children are killed indiscriminately and the program Lib_Exits 740 */ 741 /* VARARGS */ 742 void 743 #if __STDC__ 744 Punt(const char *fmt, ...) 745 #else 746 Punt(fmt, va_alist) 747 char *fmt; 748 va_dcl 749 #endif 750 { 751 va_list ap; 752 #if __STDC__ 753 va_start(ap, fmt); 754 #else 755 va_start(ap); 756 #endif 757 (void)fprintf(stderr, "make: "); 758 (void)vfprintf(stderr, fmt, ap); 759 va_end(ap); 760 (void)fprintf(stderr, "\n"); 761 (void)fflush(stderr); 762 763 DieHorribly(); 764 } 765 766 /*- 767 * DieHorribly -- 768 * Exit without giving a message. 769 * 770 * Results: 771 * None 772 * 773 * Side Effects: 774 * A big one... 775 */ 776 void 777 DieHorribly() 778 { 779 if (jobsRunning) 780 Job_AbortAll(); 781 if (DEBUG(GRAPH2)) 782 Targ_PrintGraph(2); 783 exit(2); /* Not 1, so -q can distinguish error */ 784 } 785 786 /* 787 * Finish -- 788 * Called when aborting due to errors in child shell to signal 789 * abnormal exit. 790 * 791 * Results: 792 * None 793 * 794 * Side Effects: 795 * The program exits 796 */ 797 void 798 Finish(errors) 799 int errors; /* number of errors encountered in Make_Make */ 800 { 801 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 802 } 803 804 /* 805 * emalloc -- 806 * malloc, but die on error. 807 */ 808 char * 809 emalloc(len) 810 u_int len; 811 { 812 char *p; 813 814 if (!(p = malloc(len))) 815 enomem(); 816 return(p); 817 } 818 819 /* 820 * enomem -- 821 * die when out of memory. 822 */ 823 void 824 enomem() 825 { 826 (void)fprintf(stderr, "make: %s.\n", strerror(errno)); 827 exit(2); 828 } 829 830 /* 831 * usage -- 832 * exit with usage message 833 */ 834 static void 835 usage() 836 { 837 (void)fprintf(stderr, 838 "usage: make [-eiknqrst] [-D variable] [-d flags] [-f makefile ]\n\ 839 [-I directory] [-j max_jobs] [variable=value]\n"); 840 exit(2); 841 } 842