main.c revision 16663
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 * 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39#ifndef lint 40static char copyright[] = 41"@(#) Copyright (c) 1988, 1989, 1990, 1993\n\ 42 The Regents of the University of California. All rights reserved.\n"; 43#endif /* not lint */ 44 45#ifndef lint 46static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 47#endif /* not lint */ 48 49/*- 50 * main.c -- 51 * The main file for this entire program. Exit routines etc 52 * reside here. 53 * 54 * Utility functions defined in this file: 55 * Main_ParseArgLine Takes a line of arguments, breaks them and 56 * treats them as if they were given when first 57 * invoked. Used by the parse module to implement 58 * the .MFLAGS target. 59 * 60 * Error Print a tagged error message. The global 61 * MAKE variable must have been defined. This 62 * takes a format string and two optional 63 * arguments for it. 64 * 65 * Fatal Print an error message and exit. Also takes 66 * a format string and two arguments. 67 * 68 * Punt Aborts all jobs and exits with a message. Also 69 * takes a format string and two arguments. 70 * 71 * Finish Finish things up by printing the number of 72 * errors which occured, as passed to it, and 73 * exiting. 74 */ 75 76#include <sys/types.h> 77#include <sys/time.h> 78#include <sys/param.h> 79#include <sys/resource.h> 80#include <sys/signal.h> 81#include <sys/stat.h> 82#include <sys/utsname.h> 83#include <errno.h> 84#include <fcntl.h> 85#include <stdio.h> 86#if __STDC__ 87#include <stdarg.h> 88#else 89#include <varargs.h> 90#endif 91#include "make.h" 92#include "hash.h" 93#include "dir.h" 94#include "job.h" 95#include "pathnames.h" 96 97#ifndef DEFMAXLOCAL 98#define DEFMAXLOCAL DEFMAXJOBS 99#endif DEFMAXLOCAL 100 101#define MAKEFLAGS ".MAKEFLAGS" 102 103Lst create; /* Targets to be made */ 104time_t now; /* Time at start of make */ 105GNode *DEFAULT; /* .DEFAULT node */ 106Boolean allPrecious; /* .PRECIOUS given on line by itself */ 107 108static Boolean noBuiltins; /* -r flag */ 109static Lst makefiles; /* ordered list of makefiles to read */ 110int maxJobs; /* -J argument */ 111static int maxLocal; /* -L argument */ 112Boolean compatMake; /* -B argument */ 113Boolean debug; /* -d flag */ 114Boolean noExecute; /* -n flag */ 115Boolean keepgoing; /* -k flag */ 116Boolean queryFlag; /* -q flag */ 117Boolean touchFlag; /* -t flag */ 118Boolean usePipes; /* !-P flag */ 119Boolean ignoreErrors; /* -i flag */ 120Boolean beSilent; /* -s flag */ 121Boolean oldVars; /* variable substitution style */ 122Boolean checkEnvFirst; /* -e flag */ 123static Boolean jobsRunning; /* TRUE if the jobs might be running */ 124 125static Boolean ReadMakefile(); 126static void usage(); 127 128static char *curdir; /* startup directory */ 129static char *objdir; /* where we chdir'ed to */ 130 131/*- 132 * MainParseArgs -- 133 * Parse a given argument vector. Called from main() and from 134 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 135 * 136 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 137 * 138 * Results: 139 * None 140 * 141 * Side Effects: 142 * Various global and local flags will be set depending on the flags 143 * given 144 */ 145static void 146MainParseArgs(argc, argv) 147 int argc; 148 char **argv; 149{ 150 extern int optind; 151 extern char *optarg; 152 int c; 153 154 optind = 1; /* since we're called more than once */ 155#ifdef notyet 156# define OPTFLAGS "BD:I:L:PSd:ef:ij:knqrst" 157#else 158# define OPTFLAGS "D:I:d:ef:ij:knqrst" 159#endif 160rearg: while((c = getopt(argc, argv, OPTFLAGS)) != EOF) { 161 switch(c) { 162 case 'D': 163 Var_Set(optarg, "1", VAR_GLOBAL); 164 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 165 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 166 break; 167 case 'I': 168 Parse_AddIncludeDir(optarg); 169 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 170 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 171 break; 172#ifdef notyet 173 case 'B': 174 compatMake = TRUE; 175 break; 176 case 'L': 177 maxLocal = atoi(optarg); 178 Var_Append(MAKEFLAGS, "-L", VAR_GLOBAL); 179 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 180 break; 181 case 'P': 182 usePipes = FALSE; 183 Var_Append(MAKEFLAGS, "-P", VAR_GLOBAL); 184 break; 185 case 'S': 186 keepgoing = FALSE; 187 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 188 break; 189#endif 190 case 'd': { 191 char *modules = optarg; 192 193 for (; *modules; ++modules) 194 switch (*modules) { 195 case 'A': 196 debug = ~0; 197 break; 198 case 'a': 199 debug |= DEBUG_ARCH; 200 break; 201 case 'c': 202 debug |= DEBUG_COND; 203 break; 204 case 'd': 205 debug |= DEBUG_DIR; 206 break; 207 case 'f': 208 debug |= DEBUG_FOR; 209 break; 210 case 'g': 211 if (modules[1] == '1') { 212 debug |= DEBUG_GRAPH1; 213 ++modules; 214 } 215 else if (modules[1] == '2') { 216 debug |= DEBUG_GRAPH2; 217 ++modules; 218 } 219 break; 220 case 'j': 221 debug |= DEBUG_JOB; 222 break; 223 case 'm': 224 debug |= DEBUG_MAKE; 225 break; 226 case 's': 227 debug |= DEBUG_SUFF; 228 break; 229 case 't': 230 debug |= DEBUG_TARG; 231 break; 232 case 'v': 233 debug |= DEBUG_VAR; 234 break; 235 default: 236 (void)fprintf(stderr, 237 "make: illegal argument to d option -- %c\n", 238 *modules); 239 usage(); 240 } 241 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 242 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 243 break; 244 } 245 case 'e': 246 checkEnvFirst = TRUE; 247 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 248 break; 249 case 'f': 250 (void)Lst_AtEnd(makefiles, (ClientData)optarg); 251 break; 252 case 'i': 253 ignoreErrors = TRUE; 254 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 255 break; 256 case 'j': 257 maxJobs = atoi(optarg); 258 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 259 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 260 break; 261 case 'k': 262 keepgoing = TRUE; 263 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 264 break; 265 case 'n': 266 noExecute = TRUE; 267 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 268 break; 269 case 'q': 270 queryFlag = TRUE; 271 /* Kind of nonsensical, wot? */ 272 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 273 break; 274 case 'r': 275 noBuiltins = TRUE; 276 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 277 break; 278 case 's': 279 beSilent = TRUE; 280 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 281 break; 282 case 't': 283 touchFlag = TRUE; 284 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 285 break; 286 default: 287 case '?': 288 usage(); 289 } 290 } 291 292 oldVars = TRUE; 293 294 /* 295 * See if the rest of the arguments are variable assignments and 296 * perform them if so. Else take them to be targets and stuff them 297 * on the end of the "create" list. 298 */ 299 for (argv += optind, argc -= optind; *argv; ++argv, --argc) 300 if (Parse_IsVar(*argv)) 301 Parse_DoVar(*argv, VAR_CMD); 302 else { 303 if (!**argv) 304 Punt("illegal (null) argument."); 305 if (**argv == '-') { 306 if ((*argv)[1]) 307 optind = 0; /* -flag... */ 308 else 309 optind = 1; /* - */ 310 goto rearg; 311 } 312 (void)Lst_AtEnd(create, (ClientData)strdup(*argv)); 313 } 314} 315 316/*- 317 * Main_ParseArgLine -- 318 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 319 * is encountered and by main() when reading the .MAKEFLAGS envariable. 320 * Takes a line of arguments and breaks it into its 321 * component words and passes those words and the number of them to the 322 * MainParseArgs function. 323 * The line should have all its leading whitespace removed. 324 * 325 * Results: 326 * None 327 * 328 * Side Effects: 329 * Only those that come from the various arguments. 330 */ 331void 332Main_ParseArgLine(line) 333 char *line; /* Line to fracture */ 334{ 335 char **argv; /* Manufactured argument vector */ 336 int argc; /* Number of arguments in argv */ 337 338 if (line == NULL) 339 return; 340 for (; *line == ' '; ++line) 341 continue; 342 if (!*line) 343 return; 344 345 argv = brk_string(line, &argc, TRUE); 346 MainParseArgs(argc, argv); 347} 348 349/*- 350 * main -- 351 * The main function, for obvious reasons. Initializes variables 352 * and a few modules, then parses the arguments give it in the 353 * environment and on the command line. Reads the system makefile 354 * followed by either Makefile, makefile or the file given by the 355 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 356 * flags it has received by then uses either the Make or the Compat 357 * module to create the initial list of targets. 358 * 359 * Results: 360 * If -q was given, exits -1 if anything was out-of-date. Else it exits 361 * 0. 362 * 363 * Side Effects: 364 * The program exits when done. Targets are created. etc. etc. etc. 365 */ 366int 367main(argc, argv) 368 int argc; 369 char **argv; 370{ 371 Lst targs; /* target nodes to create -- passed to Make_Init */ 372 Boolean outOfDate = TRUE; /* FALSE if all targets up to date */ 373 struct stat sb, sa; 374 char *p, *p1, *path, *pwd, *getenv(), *getwd(); 375 char mdpath[MAXPATHLEN + 1]; 376 char obpath[MAXPATHLEN + 1]; 377 char cdpath[MAXPATHLEN + 1]; 378 char *realobjdir; /* Where we'd like to go */ 379 struct utsname utsname; 380 char *machine = getenv("MACHINE"); 381 382 /* 383 * Find where we are and take care of PWD for the automounter... 384 * All this code is so that we know where we are when we start up 385 * on a different machine with pmake. 386 */ 387 curdir = cdpath; 388 if (getcwd(curdir, MAXPATHLEN) == NULL) { 389 (void)fprintf(stderr, "make: %s.\n", strerror(errno)); 390 exit(2); 391 } 392 393 if (stat(curdir, &sa) == -1) { 394 (void)fprintf(stderr, "make: %s: %s.\n", 395 curdir, strerror(errno)); 396 exit(2); 397 } 398 399 if ((pwd = getenv("PWD")) != NULL) { 400 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 401 sa.st_dev == sb.st_dev) 402 (void) strcpy(curdir, pwd); 403 } 404 405 /* 406 * Get the name of this type of MACHINE from utsname 407 * so we can share an executable for similar machines. 408 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 409 * 410 * Note that while MACHINE is decided at run-time, 411 * MACHINE_ARCH is always known at compile time. 412 */ 413 if (!machine) { 414 if (uname(&utsname)) { 415 perror("make: uname"); 416 exit(2); 417 } 418 machine = utsname.machine; 419 } 420 421 /* 422 * if the MAKEOBJDIR (or by default, the _PATH_OBJDIR) directory 423 * exists, change into it and build there. Once things are 424 * initted, have to add the original directory to the search path, 425 * and modify the paths for the Makefiles apropriately. The 426 * current directory is also placed as a variable for make scripts. 427 */ 428 if (!(path = getenv("MAKEOBJDIR"))) 429 path = _PATH_OBJDIR; 430 (void) snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 431 realobjdir = mdpath; /* This is where we'd _like_ to be, anyway */ 432 433 if (stat(mdpath, &sb) == 0 && S_ISDIR(sb.st_mode)) { 434 435 if (chdir(mdpath)) { 436 (void)fprintf(stderr, "make warning: %s: %s.\n", 437 mdpath, strerror(errno)); 438 objdir = curdir; 439 } 440 else { 441 if (mdpath[0] != '/') { 442 (void) sprintf(obpath, "%s/%s", curdir, mdpath); 443 objdir = obpath; 444 } 445 else 446 objdir = mdpath; 447 } 448 } 449 else 450 objdir = curdir; 451 452 setenv("PWD", objdir, 1); 453 454 create = Lst_Init(FALSE); 455 makefiles = Lst_Init(FALSE); 456 beSilent = FALSE; /* Print commands as executed */ 457 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 458 noExecute = FALSE; /* Execute all commands */ 459 keepgoing = FALSE; /* Stop on error */ 460 allPrecious = FALSE; /* Remove targets when interrupted */ 461 queryFlag = FALSE; /* This is not just a check-run */ 462 noBuiltins = FALSE; /* Read the built-in rules */ 463 touchFlag = FALSE; /* Actually update targets */ 464 usePipes = TRUE; /* Catch child output in pipes */ 465 debug = 0; /* No debug verbosity, please. */ 466 jobsRunning = FALSE; 467 468 maxJobs = DEFMAXJOBS; /* Set default max concurrency */ 469 maxLocal = DEFMAXLOCAL; /* Set default local max concurrency */ 470#ifdef notyet 471 compatMake = FALSE; /* No compat mode */ 472#else 473 compatMake = TRUE; /* No compat mode */ 474#endif 475 476 477 /* 478 * Initialize the parsing, directory and variable modules to prepare 479 * for the reading of inclusion paths and variable settings on the 480 * command line 481 */ 482 Dir_Init(); /* Initialize directory structures so -I flags 483 * can be processed correctly */ 484 Parse_Init(); /* Need to initialize the paths of #include 485 * directories */ 486 Var_Init(); /* As well as the lists of variables for 487 * parsing arguments */ 488 str_init(); 489 if (objdir != curdir) 490 Dir_AddDir(dirSearchPath, curdir); 491 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 492 Var_Set(".TARGETOBJDIR", realobjdir, VAR_GLOBAL); 493 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 494 495 /* 496 * Initialize various variables. 497 * MAKE also gets this name, for compatibility 498 * .MAKEFLAGS gets set to the empty string just in case. 499 * MFLAGS also gets initialized empty, for compatibility. 500 */ 501 Var_Set("MAKE", argv[0], VAR_GLOBAL); 502 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 503 Var_Set("MFLAGS", "", VAR_GLOBAL); 504 Var_Set("MACHINE", machine, VAR_GLOBAL); 505#ifdef MACHINE_ARCH 506 Var_Set("MACHINE_ARCH", MACHINE_ARCH, VAR_GLOBAL); 507#endif 508 509 /* 510 * First snag any flags out of the MAKE environment variable. 511 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 512 * in a different format). 513 */ 514#ifdef POSIX 515 Main_ParseArgLine(getenv("MAKEFLAGS")); 516#else 517 Main_ParseArgLine(getenv("MAKE")); 518#endif 519 520 MainParseArgs(argc, argv); 521 522 /* 523 * Initialize archive, target and suffix modules in preparation for 524 * parsing the makefile(s) 525 */ 526 Arch_Init(); 527 Targ_Init(); 528 Suff_Init(); 529 530 DEFAULT = NILGNODE; 531 (void)time(&now); 532 533 /* 534 * Set up the .TARGETS variable to contain the list of targets to be 535 * created. If none specified, make the variable empty -- the parser 536 * will fill the thing in with the default or .MAIN target. 537 */ 538 if (!Lst_IsEmpty(create)) { 539 LstNode ln; 540 541 for (ln = Lst_First(create); ln != NILLNODE; 542 ln = Lst_Succ(ln)) { 543 char *name = (char *)Lst_Datum(ln); 544 545 Var_Append(".TARGETS", name, VAR_GLOBAL); 546 } 547 } else 548 Var_Set(".TARGETS", "", VAR_GLOBAL); 549 550 /* 551 * Read in the built-in rules first, followed by the specified makefile, 552 * if it was (makefile != (char *) NULL), or the default Makefile and 553 * makefile, in that order, if it wasn't. 554 */ 555 if (!noBuiltins && !ReadMakefile(_PATH_DEFSYSMK)) 556 Fatal("make: no system rules (%s).", _PATH_DEFSYSMK); 557 558 if (!Lst_IsEmpty(makefiles)) { 559 LstNode ln; 560 561 ln = Lst_Find(makefiles, (ClientData)NULL, ReadMakefile); 562 if (ln != NILLNODE) 563 Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); 564 } else if (!ReadMakefile("makefile")) 565 (void)ReadMakefile("Makefile"); 566 567 (void)ReadMakefile(".depend"); 568 569 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 570 if (p1) 571 free(p1); 572 573 /* Install all the flags into the MAKE envariable. */ 574 if (((p = Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1)) != NULL) && *p) 575#ifdef POSIX 576 setenv("MAKEFLAGS", p, 1); 577#else 578 setenv("MAKE", p, 1); 579#endif 580 if (p1) 581 free(p1); 582 583 /* 584 * For compatibility, look at the directories in the VPATH variable 585 * and add them to the search path, if the variable is defined. The 586 * variable's value is in the same format as the PATH envariable, i.e. 587 * <directory>:<directory>:<directory>... 588 */ 589 if (Var_Exists("VPATH", VAR_CMD)) { 590 char *vpath, *path, *cp, savec; 591 /* 592 * GCC stores string constants in read-only memory, but 593 * Var_Subst will want to write this thing, so store it 594 * in an array 595 */ 596 static char VPATH[] = "${VPATH}"; 597 598 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 599 path = vpath; 600 do { 601 /* skip to end of directory */ 602 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 603 continue; 604 /* Save terminator character so know when to stop */ 605 savec = *cp; 606 *cp = '\0'; 607 /* Add directory to search path */ 608 Dir_AddDir(dirSearchPath, path); 609 *cp = savec; 610 path = cp + 1; 611 } while (savec == ':'); 612 (void)free((Address)vpath); 613 } 614 615 /* 616 * Now that all search paths have been read for suffixes et al, it's 617 * time to add the default search path to their lists... 618 */ 619 Suff_DoPaths(); 620 621 /* print the initial graph, if the user requested it */ 622 if (DEBUG(GRAPH1)) 623 Targ_PrintGraph(1); 624 625 /* 626 * Have now read the entire graph and need to make a list of targets 627 * to create. If none was given on the command line, we consult the 628 * parsing module to find the main target(s) to create. 629 */ 630 if (Lst_IsEmpty(create)) 631 targs = Parse_MainName(); 632 else 633 targs = Targ_FindList(create, TARG_CREATE); 634 635/* 636 * this was original amMake -- want to allow parallelism, so put this 637 * back in, eventually. 638 */ 639 if (!compatMake) { 640 /* 641 * Initialize job module before traversing the graph, now that 642 * any .BEGIN and .END targets have been read. This is done 643 * only if the -q flag wasn't given (to prevent the .BEGIN from 644 * being executed should it exist). 645 */ 646 if (!queryFlag) { 647 if (maxLocal == -1) 648 maxLocal = maxJobs; 649 Job_Init(maxJobs, maxLocal); 650 jobsRunning = TRUE; 651 } 652 653 /* Traverse the graph, checking on all the targets */ 654 outOfDate = Make_Run(targs); 655 } else 656 /* 657 * Compat_Init will take care of creating all the targets as 658 * well as initializing the module. 659 */ 660 Compat_Run(targs); 661 662 Lst_Destroy(targs, NOFREE); 663 Lst_Destroy(makefiles, NOFREE); 664 Lst_Destroy(create, (void (*) __P((ClientData))) free); 665 666 /* print the graph now it's been processed if the user requested it */ 667 if (DEBUG(GRAPH2)) 668 Targ_PrintGraph(2); 669 670 Suff_End(); 671 Targ_End(); 672 Arch_End(); 673 str_end(); 674 Var_End(); 675 Parse_End(); 676 Dir_End(); 677 678 if (queryFlag && outOfDate) 679 return(1); 680 else 681 return(0); 682} 683 684/*- 685 * ReadMakefile -- 686 * Open and parse the given makefile. 687 * 688 * Results: 689 * TRUE if ok. FALSE if couldn't open file. 690 * 691 * Side Effects: 692 * lots 693 */ 694static Boolean 695ReadMakefile(fname) 696 char *fname; /* makefile to read */ 697{ 698 extern Lst parseIncPath, sysIncPath; 699 FILE *stream; 700 char *name, path[MAXPATHLEN + 1]; 701 702 if (!strcmp(fname, "-")) { 703 Parse_File("(stdin)", stdin); 704 Var_Set("MAKEFILE", "", VAR_GLOBAL); 705 } else { 706 if ((stream = fopen(fname, "r")) != NULL) 707 goto found; 708 /* if we've chdir'd, rebuild the path name */ 709 if (curdir != objdir && *fname != '/') { 710 (void)sprintf(path, "%s/%s", curdir, fname); 711 if ((stream = fopen(path, "r")) != NULL) { 712 fname = path; 713 goto found; 714 } 715 } 716 /* look in -I and system include directories. */ 717 name = Dir_FindFile(fname, parseIncPath); 718 if (!name) 719 name = Dir_FindFile(fname, sysIncPath); 720 if (!name || !(stream = fopen(name, "r"))) 721 return(FALSE); 722 fname = name; 723 /* 724 * set the MAKEFILE variable desired by System V fans -- the 725 * placement of the setting here means it gets set to the last 726 * makefile specified, as it is set by SysV make. 727 */ 728found: Var_Set("MAKEFILE", fname, VAR_GLOBAL); 729 Parse_File(fname, stream); 730 (void)fclose(stream); 731 } 732 return(TRUE); 733} 734 735/*- 736 * Error -- 737 * Print an error message given its format. 738 * 739 * Results: 740 * None. 741 * 742 * Side Effects: 743 * The message is printed. 744 */ 745/* VARARGS */ 746void 747#if __STDC__ 748Error(char *fmt, ...) 749#else 750Error(va_alist) 751 va_dcl 752#endif 753{ 754 va_list ap; 755#if __STDC__ 756 va_start(ap, fmt); 757#else 758 char *fmt; 759 760 va_start(ap); 761 fmt = va_arg(ap, char *); 762#endif 763 (void)vfprintf(stderr, fmt, ap); 764 va_end(ap); 765 (void)fprintf(stderr, "\n"); 766 (void)fflush(stderr); 767} 768 769/*- 770 * Fatal -- 771 * Produce a Fatal error message. If jobs are running, waits for them 772 * to finish. 773 * 774 * Results: 775 * None 776 * 777 * Side Effects: 778 * The program exits 779 */ 780/* VARARGS */ 781void 782#if __STDC__ 783Fatal(char *fmt, ...) 784#else 785Fatal(va_alist) 786 va_dcl 787#endif 788{ 789 va_list ap; 790#if __STDC__ 791 va_start(ap, fmt); 792#else 793 char *fmt; 794 795 va_start(ap); 796 fmt = va_arg(ap, char *); 797#endif 798 if (jobsRunning) 799 Job_Wait(); 800 801 (void)vfprintf(stderr, fmt, ap); 802 va_end(ap); 803 (void)fprintf(stderr, "\n"); 804 (void)fflush(stderr); 805 806 if (DEBUG(GRAPH2)) 807 Targ_PrintGraph(2); 808 exit(2); /* Not 1 so -q can distinguish error */ 809} 810 811/* 812 * Punt -- 813 * Major exception once jobs are being created. Kills all jobs, prints 814 * a message and exits. 815 * 816 * Results: 817 * None 818 * 819 * Side Effects: 820 * All children are killed indiscriminately and the program Lib_Exits 821 */ 822/* VARARGS */ 823void 824#if __STDC__ 825Punt(char *fmt, ...) 826#else 827Punt(va_alist) 828 va_dcl 829#endif 830{ 831 va_list ap; 832#if __STDC__ 833 va_start(ap, fmt); 834#else 835 char *fmt; 836 837 va_start(ap); 838 fmt = va_arg(ap, char *); 839#endif 840 841 (void)fprintf(stderr, "make: "); 842 (void)vfprintf(stderr, fmt, ap); 843 va_end(ap); 844 (void)fprintf(stderr, "\n"); 845 (void)fflush(stderr); 846 847 DieHorribly(); 848} 849 850/*- 851 * DieHorribly -- 852 * Exit without giving a message. 853 * 854 * Results: 855 * None 856 * 857 * Side Effects: 858 * A big one... 859 */ 860void 861DieHorribly() 862{ 863 if (jobsRunning) 864 Job_AbortAll(); 865 if (DEBUG(GRAPH2)) 866 Targ_PrintGraph(2); 867 exit(2); /* Not 1, so -q can distinguish error */ 868} 869 870/* 871 * Finish -- 872 * Called when aborting due to errors in child shell to signal 873 * abnormal exit. 874 * 875 * Results: 876 * None 877 * 878 * Side Effects: 879 * The program exits 880 */ 881void 882Finish(errors) 883 int errors; /* number of errors encountered in Make_Make */ 884{ 885 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 886} 887 888/* 889 * emalloc -- 890 * malloc, but die on error. 891 */ 892char * 893emalloc(len) 894 size_t len; 895{ 896 char *p; 897 898 if ((p = (char *) malloc(len)) == NULL) 899 enomem(); 900 return(p); 901} 902 903/* 904 * enomem -- 905 * die when out of memory. 906 */ 907void 908enomem() 909{ 910 (void)fprintf(stderr, "make: %s.\n", strerror(errno)); 911 exit(2); 912} 913 914/* 915 * usage -- 916 * exit with usage message 917 */ 918static void 919usage() 920{ 921 (void)fprintf(stderr, 922"usage: make [-eiknqrst] [-D variable] [-d flags] [-f makefile ]\n\ 923 [-I directory] [-j max_jobs] [variable=value]\n"); 924 exit(2); 925} 926 927 928int 929PrintAddr(a, b) 930 ClientData a; 931 ClientData b; 932{ 933 printf("%lx ", (unsigned long) a); 934 return b ? 0 : 0; 935} 936