main.c revision 1.108
1 /* $NetBSD: main.c,v 1.108 2005/06/03 16:15:46 lukem 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 72 static char rcsid[] = "$NetBSD: main.c,v 1.108 2005/06/03 16:15:46 lukem Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\n\ 77 The Regents of the University of California. All rights reserved.\n"); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.108 2005/06/03 16:15:46 lukem Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and two optional 103 * arguments for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and two arguments. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and two arguments. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/signal.h> 121 #include <sys/stat.h> 122 #ifdef MAKE_NATIVE 123 #include <sys/utsname.h> 124 #endif 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <fcntl.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 134 #include "make.h" 135 #include "hash.h" 136 #include "dir.h" 137 #include "job.h" 138 #include "pathnames.h" 139 #include "trace.h" 140 141 #ifdef USE_IOVEC 142 #include <sys/uio.h> 143 #endif 144 145 #ifndef DEFMAXLOCAL 146 #define DEFMAXLOCAL DEFMAXJOBS 147 #endif /* DEFMAXLOCAL */ 148 149 Lst create; /* Targets to be made */ 150 time_t now; /* Time at start of make */ 151 GNode *DEFAULT; /* .DEFAULT node */ 152 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 153 154 static Boolean noBuiltins; /* -r flag */ 155 static Lst makefiles; /* ordered list of makefiles to read */ 156 static Boolean printVars; /* print value of one or more vars */ 157 static Lst variables; /* list of variables to print */ 158 int maxJobs; /* -j argument */ 159 static int maxLocal; /* -L argument */ 160 Boolean compatMake; /* -B argument */ 161 Boolean debug; /* -d flag */ 162 Boolean noExecute; /* -n flag */ 163 Boolean noRecursiveExecute; /* -N flag */ 164 Boolean keepgoing; /* -k flag */ 165 Boolean queryFlag; /* -q flag */ 166 Boolean touchFlag; /* -t flag */ 167 Boolean usePipes; /* !-P flag */ 168 Boolean ignoreErrors; /* -i flag */ 169 Boolean beSilent; /* -s flag */ 170 Boolean oldVars; /* variable substitution style */ 171 Boolean checkEnvFirst; /* -e flag */ 172 Boolean parseWarnFatal; /* -W flag */ 173 Boolean jobServer; /* -J flag */ 174 Boolean varNoExportEnv; /* -X flag */ 175 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 176 static const char * tracefile; 177 static char * Check_Cwd_av(int, char **, int); 178 static void MainParseArgs(int, char **); 179 static int ReadMakefile(ClientData, ClientData); 180 static void usage(void); 181 182 static char curdir[MAXPATHLEN + 1]; /* startup directory */ 183 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 184 char *progname; /* the program name */ 185 186 Boolean forceJobs = FALSE; 187 188 extern Lst parseIncPath; 189 190 /*- 191 * MainParseArgs -- 192 * Parse a given argument vector. Called from main() and from 193 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 194 * 195 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 196 * 197 * Results: 198 * None 199 * 200 * Side Effects: 201 * Various global and local flags will be set depending on the flags 202 * given 203 */ 204 static void 205 MainParseArgs(int argc, char **argv) 206 { 207 char *p; 208 int c; 209 int arginc; 210 char *argvalue; 211 const char *getopt_def; 212 char *optscan; 213 Boolean inOption, dashDash = FALSE; 214 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 215 216 #ifdef REMOTE 217 # define OPTFLAGS "BD:I:J:L:NPST:V:WXd:ef:ij:km:nqrst" 218 #else 219 # define OPTFLAGS "BD:I:J:NPST:V:WXd:ef:ij:km:nqrst" 220 #endif 221 #undef optarg 222 #define optarg argvalue 223 /* Can't actually use getopt(3) because rescanning is not portable */ 224 225 getopt_def = OPTFLAGS; 226 rearg: 227 inOption = FALSE; 228 optscan = NULL; 229 while(argc > 1) { 230 char *getopt_spec; 231 if(!inOption) 232 optscan = argv[1]; 233 c = *optscan++; 234 arginc = 0; 235 if(inOption) { 236 if(c == '\0') { 237 ++argv; 238 --argc; 239 inOption = FALSE; 240 continue; 241 } 242 } else { 243 if (c != '-' || dashDash) 244 break; 245 inOption = TRUE; 246 c = *optscan++; 247 } 248 /* '-' found at some earlier point */ 249 getopt_spec = strchr(getopt_def, c); 250 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 251 /* -<something> found, and <something> should have an arg */ 252 inOption = FALSE; 253 arginc = 1; 254 argvalue = optscan; 255 if(*argvalue == '\0') { 256 if (argc < 3) { 257 (void)fprintf(stderr, 258 "%s: option requires " 259 "an argument -- %c\n", 260 progname, c); 261 usage(); 262 } 263 argvalue = argv[2]; 264 arginc = 2; 265 } 266 } else { 267 argvalue = NULL; 268 } 269 switch(c) { 270 case '\0': 271 arginc = 1; 272 inOption = FALSE; 273 break; 274 case 'B': 275 compatMake = TRUE; 276 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 277 break; 278 case 'D': 279 Var_Set(optarg, "1", VAR_GLOBAL, 0); 280 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 281 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 282 break; 283 case 'I': 284 Parse_AddIncludeDir(optarg); 285 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 286 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 287 break; 288 case 'J': 289 if (sscanf(optarg, "%d,%d", &job_pipe[0], &job_pipe[1]) != 2) { 290 /* backslash to avoid trigraph ??) */ 291 (void)fprintf(stderr, 292 "%s: internal error -- J option malformed (%s?\?)\n", 293 progname, optarg); 294 usage(); 295 } 296 if ((fcntl(job_pipe[0], F_GETFD, 0) < 0) || 297 (fcntl(job_pipe[1], F_GETFD, 0) < 0)) { 298 #if 0 299 (void)fprintf(stderr, 300 "%s: warning -- J descriptors were closed!\n", 301 progname); 302 #endif 303 job_pipe[0] = -1; 304 job_pipe[1] = -1; 305 compatMake = TRUE; 306 } else { 307 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 308 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 309 jobServer = TRUE; 310 } 311 break; 312 #ifdef REMOTE 313 case 'L': 314 maxLocal = strtol(optarg, &p, 0); 315 if (*p != '\0' || maxLocal < 1) { 316 (void) fprintf(stderr, "%s: illegal argument to -L -- must be positive integer!\n", 317 progname); 318 exit(1); 319 } 320 Var_Append(MAKEFLAGS, "-L", VAR_GLOBAL); 321 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 322 break; 323 #endif 324 case 'N': 325 noExecute = TRUE; 326 noRecursiveExecute = TRUE; 327 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 328 break; 329 case 'P': 330 usePipes = FALSE; 331 Var_Append(MAKEFLAGS, "-P", VAR_GLOBAL); 332 break; 333 case 'S': 334 keepgoing = FALSE; 335 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 336 break; 337 case 'T': 338 tracefile = estrdup(optarg); 339 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 340 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 341 break; 342 case 'V': 343 printVars = TRUE; 344 (void)Lst_AtEnd(variables, (ClientData)optarg); 345 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 346 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 347 break; 348 case 'W': 349 parseWarnFatal = TRUE; 350 break; 351 case 'X': 352 varNoExportEnv = TRUE; 353 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 354 break; 355 case 'd': { 356 char *modules = optarg; 357 358 for (; *modules; ++modules) 359 switch (*modules) { 360 case 'A': 361 debug = ~0; 362 break; 363 case 'a': 364 debug |= DEBUG_ARCH; 365 break; 366 case 'c': 367 debug |= DEBUG_COND; 368 break; 369 case 'd': 370 debug |= DEBUG_DIR; 371 break; 372 case 'e': 373 debug |= DEBUG_ERROR; 374 break; 375 case 'f': 376 debug |= DEBUG_FOR; 377 break; 378 case 'g': 379 if (modules[1] == '1') { 380 debug |= DEBUG_GRAPH1; 381 ++modules; 382 } 383 else if (modules[1] == '2') { 384 debug |= DEBUG_GRAPH2; 385 ++modules; 386 } 387 else if (modules[1] == '3') { 388 debug |= DEBUG_GRAPH3; 389 ++modules; 390 } 391 break; 392 case 'j': 393 debug |= DEBUG_JOB; 394 break; 395 case 'm': 396 debug |= DEBUG_MAKE; 397 break; 398 case 's': 399 debug |= DEBUG_SUFF; 400 break; 401 case 't': 402 debug |= DEBUG_TARG; 403 break; 404 case 'v': 405 debug |= DEBUG_VAR; 406 break; 407 case 'x': 408 debug |= DEBUG_SHELL; 409 break; 410 default: 411 (void)fprintf(stderr, 412 "%s: illegal argument to d option -- %c\n", 413 progname, *modules); 414 usage(); 415 } 416 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 417 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 418 break; 419 } 420 case 'e': 421 checkEnvFirst = TRUE; 422 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 423 break; 424 case 'f': 425 (void)Lst_AtEnd(makefiles, (ClientData)optarg); 426 break; 427 case 'i': 428 ignoreErrors = TRUE; 429 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 430 break; 431 case 'j': 432 forceJobs = TRUE; 433 maxJobs = strtol(optarg, &p, 0); 434 if (*p != '\0' || maxJobs < 1) { 435 (void) fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 436 progname); 437 exit(1); 438 } 439 #ifndef REMOTE 440 maxLocal = maxJobs; 441 #endif 442 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 443 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 444 break; 445 case 'k': 446 keepgoing = TRUE; 447 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 448 break; 449 case 'm': 450 /* look for magic parent directory search string */ 451 if (strncmp(".../", optarg, 4) == 0) { 452 if (!Dir_FindHereOrAbove(curdir, optarg+4, 453 found_path, sizeof(found_path))) 454 break; /* nothing doing */ 455 (void) Dir_AddDir(sysIncPath, found_path); 456 457 } else { 458 (void) Dir_AddDir(sysIncPath, optarg); 459 } 460 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 461 Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 462 break; 463 case 'n': 464 noExecute = TRUE; 465 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 466 break; 467 case 'q': 468 queryFlag = TRUE; 469 /* Kind of nonsensical, wot? */ 470 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 471 break; 472 case 'r': 473 noBuiltins = TRUE; 474 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 475 break; 476 case 's': 477 beSilent = TRUE; 478 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 479 break; 480 case 't': 481 touchFlag = TRUE; 482 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 483 break; 484 case '-': 485 dashDash = TRUE; 486 break; 487 default: 488 case '?': 489 usage(); 490 } 491 argv += arginc; 492 argc -= arginc; 493 } 494 495 oldVars = TRUE; 496 497 /* 498 * See if the rest of the arguments are variable assignments and 499 * perform them if so. Else take them to be targets and stuff them 500 * on the end of the "create" list. 501 */ 502 for (; argc > 1; ++argv, --argc) 503 if (Parse_IsVar(argv[1])) { 504 Parse_DoVar(argv[1], VAR_CMD); 505 } else { 506 if (!*argv[1]) 507 Punt("illegal (null) argument."); 508 if (*argv[1] == '-' && !dashDash) 509 goto rearg; 510 (void)Lst_AtEnd(create, (ClientData)estrdup(argv[1])); 511 } 512 } 513 514 /*- 515 * Main_ParseArgLine -- 516 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 517 * is encountered and by main() when reading the .MAKEFLAGS envariable. 518 * Takes a line of arguments and breaks it into its 519 * component words and passes those words and the number of them to the 520 * MainParseArgs function. 521 * The line should have all its leading whitespace removed. 522 * 523 * Input: 524 * line Line to fracture 525 * 526 * Results: 527 * None 528 * 529 * Side Effects: 530 * Only those that come from the various arguments. 531 */ 532 void 533 Main_ParseArgLine(char *line) 534 { 535 char **argv; /* Manufactured argument vector */ 536 int argc; /* Number of arguments in argv */ 537 char *args; /* Space used by the args */ 538 char *buf, *p1; 539 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 540 size_t len; 541 542 if (line == NULL) 543 return; 544 for (; *line == ' '; ++line) 545 continue; 546 if (!*line) 547 return; 548 549 buf = emalloc(len = strlen(line) + strlen(argv0) + 2); 550 (void)snprintf(buf, len, "%s %s", argv0, line); 551 if (p1) 552 free(p1); 553 554 argv = brk_string(buf, &argc, TRUE, &args); 555 free(buf); 556 MainParseArgs(argc, argv); 557 558 free(args); 559 free(argv); 560 } 561 562 Boolean 563 Main_SetObjdir(const char *path) 564 { 565 struct stat sb; 566 char *p = NULL; 567 char buf[MAXPATHLEN + 1]; 568 Boolean rc = FALSE; 569 570 /* expand variable substitutions */ 571 if (strchr(path, '$') != 0) { 572 snprintf(buf, MAXPATHLEN, "%s", path); 573 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 574 } 575 576 if (path[0] != '/') { 577 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 578 path = buf; 579 } 580 581 /* look for the directory and try to chdir there */ 582 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 583 if (chdir(path)) { 584 (void)fprintf(stderr, "make warning: %s: %s.\n", 585 path, strerror(errno)); 586 } else { 587 strncpy(objdir, path, MAXPATHLEN); 588 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 589 setenv("PWD", objdir, 1); 590 Dir_InitDot(); 591 rc = TRUE; 592 } 593 } 594 595 if (p) 596 free(p); 597 return rc; 598 } 599 600 601 /*- 602 * main -- 603 * The main function, for obvious reasons. Initializes variables 604 * and a few modules, then parses the arguments give it in the 605 * environment and on the command line. Reads the system makefile 606 * followed by either Makefile, makefile or the file given by the 607 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 608 * flags it has received by then uses either the Make or the Compat 609 * module to create the initial list of targets. 610 * 611 * Results: 612 * If -q was given, exits -1 if anything was out-of-date. Else it exits 613 * 0. 614 * 615 * Side Effects: 616 * The program exits when done. Targets are created. etc. etc. etc. 617 */ 618 int 619 main(int argc, char **argv) 620 { 621 Lst targs; /* target nodes to create -- passed to Make_Init */ 622 Boolean outOfDate = TRUE; /* FALSE if all targets up to date */ 623 struct stat sb, sa; 624 char *p1, *path, *pwd; 625 char mdpath[MAXPATHLEN]; 626 char *machine = getenv("MACHINE"); 627 const char *machine_arch = getenv("MACHINE_ARCH"); 628 char *syspath = getenv("MAKESYSPATH"); 629 Lst sysMkPath; /* Path of sys.mk */ 630 char *cp = NULL, *start; 631 /* avoid faults on read-only strings */ 632 static char defsyspath[] = _PATH_DEFSYSPATH; 633 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 634 struct timeval rightnow; /* to initialize random seed */ 635 636 /* 637 * Set the seed to produce a different random sequences 638 * on each program execution. 639 */ 640 gettimeofday(&rightnow, NULL); 641 srandom(rightnow.tv_sec + rightnow.tv_usec); 642 643 if ((progname = strrchr(argv[0], '/')) != NULL) 644 progname++; 645 else 646 progname = argv[0]; 647 #ifdef RLIMIT_NOFILE 648 /* 649 * get rid of resource limit on file descriptors 650 */ 651 { 652 struct rlimit rl; 653 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 654 rl.rlim_cur != rl.rlim_max) { 655 rl.rlim_cur = rl.rlim_max; 656 (void) setrlimit(RLIMIT_NOFILE, &rl); 657 } 658 } 659 #endif 660 /* 661 * Find where we are and take care of PWD for the automounter... 662 * All this code is so that we know where we are when we start up 663 * on a different machine with pmake. 664 */ 665 if (getcwd(curdir, MAXPATHLEN) == NULL) { 666 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 667 exit(2); 668 } 669 670 if (stat(curdir, &sa) == -1) { 671 (void)fprintf(stderr, "%s: %s: %s.\n", 672 progname, curdir, strerror(errno)); 673 exit(2); 674 } 675 676 /* 677 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 678 * since the value of curdir can very depending on how we got 679 * here. Ie sitting at a shell prompt (shell that provides $PWD) 680 * or via subdir.mk in which case its likely a shell which does 681 * not provide it. 682 * So, to stop it breaking this case only, we ignore PWD if 683 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 684 */ 685 if ((pwd = getenv("PWD")) != NULL && getenv("MAKEOBJDIRPREFIX") == NULL) { 686 const char *makeobjdir = getenv("MAKEOBJDIR"); 687 688 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 689 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 690 sa.st_dev == sb.st_dev) 691 (void) strncpy(curdir, pwd, MAXPATHLEN); 692 } 693 } 694 695 /* 696 * Get the name of this type of MACHINE from utsname 697 * so we can share an executable for similar machines. 698 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 699 * 700 * Note that both MACHINE and MACHINE_ARCH are decided at 701 * run-time. 702 */ 703 if (!machine) { 704 #ifdef MAKE_NATIVE 705 struct utsname utsname; 706 707 if (uname(&utsname) == -1) { 708 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 709 strerror(errno)); 710 exit(2); 711 } 712 machine = utsname.machine; 713 #else 714 #ifdef MAKE_MACHINE 715 machine = MAKE_MACHINE; 716 #else 717 machine = "unknown"; 718 #endif 719 #endif 720 } 721 722 if (!machine_arch) { 723 #ifndef MACHINE_ARCH 724 #ifdef MAKE_MACHINE_ARCH 725 machine_arch = MAKE_MACHINE_ARCH; 726 #else 727 machine_arch = "unknown"; 728 #endif 729 #else 730 machine_arch = MACHINE_ARCH; 731 #endif 732 } 733 734 /* 735 * Just in case MAKEOBJDIR wants us to do something tricky. 736 */ 737 Var_Init(); /* Initialize the lists of variables for 738 * parsing arguments */ 739 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 740 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 741 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 742 #ifdef MAKE_VERSION 743 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 744 #endif 745 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 746 747 /* 748 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 749 * MAKEOBJDIR is set in the environment, try only that value 750 * and fall back to .CURDIR if it does not exist. 751 * 752 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 753 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 754 * of these paths exist, just use .CURDIR. 755 */ 756 Dir_Init(curdir); 757 (void) Main_SetObjdir(curdir); 758 759 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 760 (void) snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 761 (void) Main_SetObjdir(mdpath); 762 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 763 (void) Main_SetObjdir(path); 764 } else { 765 (void) snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 766 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 767 (void) snprintf(mdpath, MAXPATHLEN, "%s%s", 768 _PATH_OBJDIRPREFIX, curdir); 769 (void) Main_SetObjdir(mdpath); 770 } 771 } 772 773 create = Lst_Init(FALSE); 774 makefiles = Lst_Init(FALSE); 775 printVars = FALSE; 776 variables = Lst_Init(FALSE); 777 beSilent = FALSE; /* Print commands as executed */ 778 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 779 noExecute = FALSE; /* Execute all commands */ 780 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 781 keepgoing = FALSE; /* Stop on error */ 782 allPrecious = FALSE; /* Remove targets when interrupted */ 783 queryFlag = FALSE; /* This is not just a check-run */ 784 noBuiltins = FALSE; /* Read the built-in rules */ 785 touchFlag = FALSE; /* Actually update targets */ 786 usePipes = TRUE; /* Catch child output in pipes */ 787 debug = 0; /* No debug verbosity, please. */ 788 jobsRunning = FALSE; 789 790 maxLocal = DEFMAXLOCAL; /* Set default local max concurrency */ 791 #ifdef REMOTE 792 maxJobs = DEFMAXJOBS; /* Set default max concurrency */ 793 #else 794 maxJobs = maxLocal; 795 #endif 796 compatMake = FALSE; /* No compat mode */ 797 798 799 /* 800 * Initialize the parsing, directory and variable modules to prepare 801 * for the reading of inclusion paths and variable settings on the 802 * command line 803 */ 804 805 /* 806 * Initialize various variables. 807 * MAKE also gets this name, for compatibility 808 * .MAKEFLAGS gets set to the empty string just in case. 809 * MFLAGS also gets initialized empty, for compatibility. 810 */ 811 Parse_Init(); 812 Var_Set("MAKE", argv[0], VAR_GLOBAL, 0); 813 Var_Set(".MAKE", argv[0], VAR_GLOBAL, 0); 814 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 815 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 816 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 817 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 818 819 /* 820 * First snag any flags out of the MAKE environment variable. 821 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 822 * in a different format). 823 */ 824 #ifdef POSIX 825 Main_ParseArgLine(getenv("MAKEFLAGS")); 826 #else 827 Main_ParseArgLine(getenv("MAKE")); 828 #endif 829 830 MainParseArgs(argc, argv); 831 832 /* 833 * Be compatible if user did not specify -j and did not explicitly 834 * turned compatibility on 835 */ 836 if (!compatMake && !forceJobs) { 837 compatMake = TRUE; 838 } 839 840 /* 841 * Initialize archive, target and suffix modules in preparation for 842 * parsing the makefile(s) 843 */ 844 Arch_Init(); 845 Targ_Init(); 846 Suff_Init(); 847 Trace_Init(tracefile); 848 849 DEFAULT = NILGNODE; 850 (void)time(&now); 851 852 Trace_Log(MAKESTART, NULL); 853 854 /* 855 * Set up the .TARGETS variable to contain the list of targets to be 856 * created. If none specified, make the variable empty -- the parser 857 * will fill the thing in with the default or .MAIN target. 858 */ 859 if (!Lst_IsEmpty(create)) { 860 LstNode ln; 861 862 for (ln = Lst_First(create); ln != NILLNODE; 863 ln = Lst_Succ(ln)) { 864 char *name = (char *)Lst_Datum(ln); 865 866 Var_Append(".TARGETS", name, VAR_GLOBAL); 867 } 868 } else 869 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 870 871 872 /* 873 * If no user-supplied system path was given (through the -m option) 874 * add the directories from the DEFSYSPATH (more than one may be given 875 * as dir1:...:dirn) to the system include path. 876 */ 877 if (syspath == NULL || *syspath == '\0') 878 syspath = defsyspath; 879 else 880 syspath = strdup(syspath); 881 882 for (start = syspath; *start != '\0'; start = cp) { 883 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 884 continue; 885 if (*cp == ':') { 886 *cp++ = '\0'; 887 } 888 /* look for magic parent directory search string */ 889 if (strncmp(".../", start, 4) != 0) { 890 (void) Dir_AddDir(defIncPath, start); 891 } else { 892 if (Dir_FindHereOrAbove(curdir, start+4, 893 found_path, sizeof(found_path))) { 894 (void) Dir_AddDir(defIncPath, found_path); 895 } 896 } 897 } 898 if (syspath != defsyspath) 899 free(syspath); 900 901 /* 902 * Read in the built-in rules first, followed by the specified 903 * makefile, if it was (makefile != (char *) NULL), or the default 904 * makefile and Makefile, in that order, if it wasn't. 905 */ 906 if (!noBuiltins) { 907 LstNode ln; 908 909 sysMkPath = Lst_Init(FALSE); 910 Dir_Expand(_PATH_DEFSYSMK, 911 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 912 sysMkPath); 913 if (Lst_IsEmpty(sysMkPath)) 914 Fatal("%s: no system rules (%s).", progname, 915 _PATH_DEFSYSMK); 916 ln = Lst_Find(sysMkPath, (ClientData)NULL, ReadMakefile); 917 if (ln != NILLNODE) 918 Fatal("%s: cannot open %s.", progname, 919 (char *)Lst_Datum(ln)); 920 } 921 922 if (!Lst_IsEmpty(makefiles)) { 923 LstNode ln; 924 925 ln = Lst_Find(makefiles, (ClientData)NULL, ReadMakefile); 926 if (ln != NILLNODE) 927 Fatal("%s: cannot open %s.", progname, 928 (char *)Lst_Datum(ln)); 929 } else if (!ReadMakefile(UNCONST("makefile"), NULL)) 930 (void)ReadMakefile(UNCONST("Makefile"), NULL); 931 932 (void)ReadMakefile(UNCONST(".depend"), NULL); 933 934 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 935 if (p1) 936 free(p1); 937 938 if (!jobServer && !compatMake) 939 Job_ServerStart(maxJobs); 940 if (DEBUG(JOB)) 941 printf("job_pipe %d %d, maxjobs %d maxlocal %d compat %d\n", job_pipe[0], job_pipe[1], maxJobs, 942 maxLocal, compatMake); 943 944 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 945 946 Check_Cwd_av(0, NULL, 0); /* initialize it */ 947 948 949 /* 950 * For compatibility, look at the directories in the VPATH variable 951 * and add them to the search path, if the variable is defined. The 952 * variable's value is in the same format as the PATH envariable, i.e. 953 * <directory>:<directory>:<directory>... 954 */ 955 if (Var_Exists("VPATH", VAR_CMD)) { 956 char *vpath, savec; 957 /* 958 * GCC stores string constants in read-only memory, but 959 * Var_Subst will want to write this thing, so store it 960 * in an array 961 */ 962 static char VPATH[] = "${VPATH}"; 963 964 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 965 path = vpath; 966 do { 967 /* skip to end of directory */ 968 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 969 continue; 970 /* Save terminator character so know when to stop */ 971 savec = *cp; 972 *cp = '\0'; 973 /* Add directory to search path */ 974 (void) Dir_AddDir(dirSearchPath, path); 975 *cp = savec; 976 path = cp + 1; 977 } while (savec == ':'); 978 (void)free((Address)vpath); 979 } 980 981 /* 982 * Now that all search paths have been read for suffixes et al, it's 983 * time to add the default search path to their lists... 984 */ 985 Suff_DoPaths(); 986 987 /* 988 * Propagate attributes through :: dependency lists. 989 */ 990 Targ_Propagate(); 991 992 /* print the initial graph, if the user requested it */ 993 if (DEBUG(GRAPH1)) 994 Targ_PrintGraph(1); 995 996 /* print the values of any variables requested by the user */ 997 if (printVars) { 998 LstNode ln; 999 1000 for (ln = Lst_First(variables); ln != NILLNODE; 1001 ln = Lst_Succ(ln)) { 1002 char *var = (char *)Lst_Datum(ln); 1003 char *value; 1004 1005 if (strchr(var, '$')) { 1006 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1007 } else { 1008 value = Var_Value(var, VAR_GLOBAL, &p1); 1009 } 1010 printf("%s\n", value ? value : ""); 1011 if (p1) 1012 free(p1); 1013 } 1014 } 1015 1016 /* 1017 * Have now read the entire graph and need to make a list of targets 1018 * to create. If none was given on the command line, we consult the 1019 * parsing module to find the main target(s) to create. 1020 */ 1021 if (Lst_IsEmpty(create)) 1022 targs = Parse_MainName(); 1023 else 1024 targs = Targ_FindList(create, TARG_CREATE); 1025 1026 if (!compatMake && !printVars) { 1027 /* 1028 * Initialize job module before traversing the graph, now that 1029 * any .BEGIN and .END targets have been read. This is done 1030 * only if the -q flag wasn't given (to prevent the .BEGIN from 1031 * being executed should it exist). 1032 */ 1033 if (!queryFlag) { 1034 if (maxLocal == -1) 1035 maxLocal = maxJobs; 1036 Job_Init(maxJobs, maxLocal); 1037 jobsRunning = TRUE; 1038 } 1039 1040 /* Traverse the graph, checking on all the targets */ 1041 outOfDate = Make_Run(targs); 1042 } else if (!printVars) { 1043 /* 1044 * Compat_Init will take care of creating all the targets as 1045 * well as initializing the module. 1046 */ 1047 Compat_Run(targs); 1048 } 1049 1050 #ifdef CLEANUP 1051 Lst_Destroy(targs, NOFREE); 1052 Lst_Destroy(variables, NOFREE); 1053 Lst_Destroy(makefiles, NOFREE); 1054 Lst_Destroy(create, (void (*)(ClientData))) free; 1055 #endif 1056 1057 /* print the graph now it's been processed if the user requested it */ 1058 if (DEBUG(GRAPH2)) 1059 Targ_PrintGraph(2); 1060 1061 Trace_Log(MAKEEND, 0); 1062 1063 Suff_End(); 1064 Targ_End(); 1065 Arch_End(); 1066 Var_End(); 1067 Parse_End(); 1068 Dir_End(); 1069 Job_End(); 1070 Trace_End(); 1071 1072 if (queryFlag && outOfDate) 1073 return(1); 1074 else 1075 return(0); 1076 } 1077 1078 /*- 1079 * ReadMakefile -- 1080 * Open and parse the given makefile. 1081 * 1082 * Results: 1083 * TRUE if ok. FALSE if couldn't open file. 1084 * 1085 * Side Effects: 1086 * lots 1087 */ 1088 static Boolean 1089 ReadMakefile(ClientData p, ClientData q __unused) 1090 { 1091 char *fname = p; /* makefile to read */ 1092 FILE *stream; 1093 size_t len = MAXPATHLEN; 1094 char *name, *path = emalloc(len); 1095 int setMAKEFILE; 1096 1097 if (!strcmp(fname, "-")) { 1098 Parse_File("(stdin)", stdin); 1099 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1100 } else { 1101 setMAKEFILE = strcmp(fname, ".depend"); 1102 1103 /* if we've chdir'd, rebuild the path name */ 1104 if (strcmp(curdir, objdir) && *fname != '/') { 1105 size_t plen = strlen(curdir) + strlen(fname) + 2; 1106 if (len < plen) 1107 path = erealloc(path, len = 2 * plen); 1108 1109 (void)snprintf(path, len, "%s/%s", curdir, fname); 1110 if ((stream = fopen(path, "r")) != NULL) { 1111 fname = path; 1112 goto found; 1113 } 1114 1115 /* If curdir failed, try objdir (ala .depend) */ 1116 plen = strlen(objdir) + strlen(fname) + 2; 1117 if (len < plen) 1118 path = erealloc(path, len = 2 * plen); 1119 (void)snprintf(path, len, "%s/%s", objdir, fname); 1120 if ((stream = fopen(path, "r")) != NULL) { 1121 fname = path; 1122 goto found; 1123 } 1124 } else if ((stream = fopen(fname, "r")) != NULL) 1125 goto found; 1126 /* look in -I and system include directories. */ 1127 name = Dir_FindFile(fname, parseIncPath); 1128 if (!name) 1129 name = Dir_FindFile(fname, 1130 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1131 if (!name || !(stream = fopen(name, "r"))) { 1132 free(path); 1133 return(FALSE); 1134 } 1135 fname = name; 1136 /* 1137 * set the MAKEFILE variable desired by System V fans -- the 1138 * placement of the setting here means it gets set to the last 1139 * makefile specified, as it is set by SysV make. 1140 */ 1141 found: 1142 if (setMAKEFILE) 1143 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1144 Parse_File(fname, stream); 1145 (void)fclose(stream); 1146 } 1147 free(path); 1148 return(TRUE); 1149 } 1150 1151 1152 /* 1153 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1154 * in situations that would not arrise with ./obj (links or not). 1155 * This tends to break things like: 1156 * 1157 * build: 1158 * ${MAKE} includes 1159 * 1160 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1161 * opposed to an argument) in a command line and if so returns 1162 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1163 * the Makefile hold true. 1164 * 1165 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1166 * 1167 * The chdir() only happens in the child process, and does nothing if 1168 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1169 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1170 * do nothing - to ensure historic semantics can be retained. 1171 */ 1172 static int Check_Cwd_Off = 0; 1173 1174 static char * 1175 Check_Cwd_av(int ac, char **av, int copy) 1176 { 1177 static char *make[4]; 1178 static char *cur_dir = NULL; 1179 char **mp; 1180 char *cp; 1181 int is_cmd, next_cmd; 1182 int i; 1183 int n; 1184 1185 if (Check_Cwd_Off) 1186 return NULL; 1187 1188 if (make[0] == NULL) { 1189 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1190 Check_Cwd_Off = 1; 1191 return NULL; 1192 } 1193 1194 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1195 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1196 make[0] = make[1]; 1197 make[1] = NULL; 1198 } else 1199 ++make[0]; 1200 make[2] = NULL; 1201 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1202 } 1203 if (ac == 0 || av == NULL) 1204 return NULL; /* initialization only */ 1205 1206 if (getenv("MAKEOBJDIR") == NULL && 1207 getenv("MAKEOBJDIRPREFIX") == NULL) 1208 return NULL; 1209 1210 1211 next_cmd = 1; 1212 for (i = 0; i < ac; ++i) { 1213 is_cmd = next_cmd; 1214 1215 n = strlen(av[i]); 1216 cp = &(av[i])[n - 1]; 1217 if (strspn(av[i], "|&;") == n) { 1218 next_cmd = 1; 1219 continue; 1220 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1221 next_cmd = 1; 1222 if (copy) { 1223 do { 1224 *cp-- = '\0'; 1225 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1226 *cp == ')' || *cp == '}') ; 1227 } else { 1228 /* 1229 * XXX this should not happen. 1230 */ 1231 fprintf(stderr, "WARNING: raw arg ends in shell meta '%s'\n", 1232 av[i]); 1233 } 1234 } else 1235 next_cmd = 0; 1236 1237 cp = av[i]; 1238 if (*cp == ';' || *cp == '&' || *cp == '|') 1239 is_cmd = 1; 1240 1241 #ifdef check_cwd_debug 1242 fprintf(stderr, "av[%d] == %s '%s'", 1243 i, (is_cmd) ? "cmd" : "arg", av[i]); 1244 #endif 1245 if (is_cmd != 0) { 1246 if (*cp == '(' || *cp == '{' || 1247 *cp == ';' || *cp == '&' || *cp == '|') { 1248 do { 1249 ++cp; 1250 } while (*cp == '(' || *cp == '{' || 1251 *cp == ';' || *cp == '&' || *cp == '|'); 1252 if (*cp == '\0') { 1253 next_cmd = 1; 1254 continue; 1255 } 1256 } 1257 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1258 #ifdef check_cwd_debug 1259 fprintf(stderr, " == cd, done.\n"); 1260 #endif 1261 return NULL; 1262 } 1263 for (mp = make; *mp != NULL; ++mp) { 1264 n = strlen(*mp); 1265 if (strcmp(cp, *mp) == 0) { 1266 #ifdef check_cwd_debug 1267 fprintf(stderr, " %s == '%s', chdir(%s)\n", 1268 cp, *mp, cur_dir); 1269 #endif 1270 return cur_dir; 1271 } 1272 } 1273 } 1274 #ifdef check_cwd_debug 1275 fprintf(stderr, "\n"); 1276 #endif 1277 } 1278 return NULL; 1279 } 1280 1281 char * 1282 Check_Cwd_Cmd(const char *cmd) 1283 { 1284 char *cp, *bp; 1285 char **av; 1286 int ac; 1287 1288 if (Check_Cwd_Off) 1289 return NULL; 1290 1291 if (cmd) { 1292 av = brk_string(cmd, &ac, TRUE, &bp); 1293 #ifdef check_cwd_debug 1294 fprintf(stderr, "splitting: '%s' -> %d words\n", 1295 cmd, ac); 1296 #endif 1297 } else { 1298 ac = 0; 1299 av = NULL; 1300 bp = NULL; 1301 } 1302 cp = Check_Cwd_av(ac, av, 1); 1303 if (bp) { 1304 free(av); 1305 free(bp); 1306 } 1307 return cp; 1308 } 1309 1310 void 1311 Check_Cwd(const char **argv) 1312 { 1313 char *cp; 1314 int ac; 1315 1316 if (Check_Cwd_Off) 1317 return; 1318 1319 for (ac = 0; argv[ac] != NULL; ++ac) 1320 /* NOTHING */; 1321 if (ac == 3 && *argv[1] == '-') { 1322 cp = Check_Cwd_Cmd(argv[2]); 1323 } else { 1324 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1325 } 1326 if (cp) { 1327 chdir(cp); 1328 } 1329 } 1330 1331 /*- 1332 * Cmd_Exec -- 1333 * Execute the command in cmd, and return the output of that command 1334 * in a string. 1335 * 1336 * Results: 1337 * A string containing the output of the command, or the empty string 1338 * If err is not NULL, it contains the reason for the command failure 1339 * 1340 * Side Effects: 1341 * The string must be freed by the caller. 1342 */ 1343 char * 1344 Cmd_Exec(const char *cmd, const char **err) 1345 { 1346 const char *args[4]; /* Args for invoking the shell */ 1347 int fds[2]; /* Pipe streams */ 1348 int cpid; /* Child PID */ 1349 int pid; /* PID from wait() */ 1350 char *res; /* result */ 1351 int status; /* command exit status */ 1352 Buffer buf; /* buffer to store the result */ 1353 char *cp; 1354 int cc; 1355 1356 1357 *err = NULL; 1358 1359 if (!shellName) 1360 Shell_Init(); 1361 /* 1362 * Set up arguments for shell 1363 */ 1364 args[0] = shellName; 1365 args[1] = "-c"; 1366 args[2] = cmd; 1367 args[3] = NULL; 1368 1369 /* 1370 * Open a pipe for fetching its output 1371 */ 1372 if (pipe(fds) == -1) { 1373 *err = "Couldn't create pipe for \"%s\""; 1374 goto bad; 1375 } 1376 1377 /* 1378 * Fork 1379 */ 1380 switch (cpid = vfork()) { 1381 case 0: 1382 /* 1383 * Close input side of pipe 1384 */ 1385 (void) close(fds[0]); 1386 1387 /* 1388 * Duplicate the output stream to the shell's output, then 1389 * shut the extra thing down. Note we don't fetch the error 1390 * stream...why not? Why? 1391 */ 1392 (void) dup2(fds[1], 1); 1393 (void) close(fds[1]); 1394 1395 (void) execv(shellPath, UNCONST(args)); 1396 _exit(1); 1397 /*NOTREACHED*/ 1398 1399 case -1: 1400 *err = "Couldn't exec \"%s\""; 1401 goto bad; 1402 1403 default: 1404 /* 1405 * No need for the writing half 1406 */ 1407 (void) close(fds[1]); 1408 1409 buf = Buf_Init(MAKE_BSIZE); 1410 1411 do { 1412 char result[BUFSIZ]; 1413 cc = read(fds[0], result, sizeof(result)); 1414 if (cc > 0) 1415 Buf_AddBytes(buf, cc, (Byte *) result); 1416 } 1417 while (cc > 0 || (cc == -1 && errno == EINTR)); 1418 1419 /* 1420 * Close the input side of the pipe. 1421 */ 1422 (void) close(fds[0]); 1423 1424 /* 1425 * Wait for the process to exit. 1426 */ 1427 while(((pid = wait(&status)) != cpid) && (pid >= 0)) 1428 continue; 1429 1430 res = (char *)Buf_GetAll (buf, &cc); 1431 Buf_Destroy(buf, FALSE); 1432 1433 if (cc == 0) 1434 *err = "Couldn't read shell's output for \"%s\""; 1435 1436 if (status) 1437 *err = "\"%s\" returned non-zero status"; 1438 1439 /* 1440 * Null-terminate the result, convert newlines to spaces and 1441 * install it in the variable. 1442 */ 1443 res[cc] = '\0'; 1444 cp = &res[cc]; 1445 1446 if (cc > 0 && *--cp == '\n') { 1447 /* 1448 * A final newline is just stripped 1449 */ 1450 *cp-- = '\0'; 1451 } 1452 while (cp >= res) { 1453 if (*cp == '\n') { 1454 *cp = ' '; 1455 } 1456 cp--; 1457 } 1458 break; 1459 } 1460 return res; 1461 bad: 1462 res = emalloc(1); 1463 *res = '\0'; 1464 return res; 1465 } 1466 1467 /*- 1468 * Error -- 1469 * Print an error message given its format. 1470 * 1471 * Results: 1472 * None. 1473 * 1474 * Side Effects: 1475 * The message is printed. 1476 */ 1477 /* VARARGS */ 1478 void 1479 Error(const char *fmt, ...) 1480 { 1481 va_list ap; 1482 1483 va_start(ap, fmt); 1484 fprintf(stderr, "%s: ", progname); 1485 (void)vfprintf(stderr, fmt, ap); 1486 va_end(ap); 1487 (void)fprintf(stderr, "\n"); 1488 (void)fflush(stderr); 1489 } 1490 1491 /*- 1492 * Fatal -- 1493 * Produce a Fatal error message. If jobs are running, waits for them 1494 * to finish. 1495 * 1496 * Results: 1497 * None 1498 * 1499 * Side Effects: 1500 * The program exits 1501 */ 1502 /* VARARGS */ 1503 void 1504 Fatal(const char *fmt, ...) 1505 { 1506 va_list ap; 1507 1508 va_start(ap, fmt); 1509 if (jobsRunning) 1510 Job_Wait(); 1511 Job_TokenFlush(); 1512 1513 (void)vfprintf(stderr, fmt, ap); 1514 va_end(ap); 1515 (void)fprintf(stderr, "\n"); 1516 (void)fflush(stderr); 1517 1518 PrintOnError(NULL); 1519 1520 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1521 Targ_PrintGraph(2); 1522 Trace_Log(MAKEERROR, 0); 1523 exit(2); /* Not 1 so -q can distinguish error */ 1524 } 1525 1526 /* 1527 * Punt -- 1528 * Major exception once jobs are being created. Kills all jobs, prints 1529 * a message and exits. 1530 * 1531 * Results: 1532 * None 1533 * 1534 * Side Effects: 1535 * All children are killed indiscriminately and the program Lib_Exits 1536 */ 1537 /* VARARGS */ 1538 void 1539 Punt(const char *fmt, ...) 1540 { 1541 va_list ap; 1542 1543 va_start(ap, fmt); 1544 (void)fprintf(stderr, "%s: ", progname); 1545 (void)vfprintf(stderr, fmt, ap); 1546 va_end(ap); 1547 (void)fprintf(stderr, "\n"); 1548 (void)fflush(stderr); 1549 1550 PrintOnError(NULL); 1551 1552 DieHorribly(); 1553 } 1554 1555 /*- 1556 * DieHorribly -- 1557 * Exit without giving a message. 1558 * 1559 * Results: 1560 * None 1561 * 1562 * Side Effects: 1563 * A big one... 1564 */ 1565 void 1566 DieHorribly(void) 1567 { 1568 if (jobsRunning) 1569 Job_AbortAll(); 1570 if (DEBUG(GRAPH2)) 1571 Targ_PrintGraph(2); 1572 Trace_Log(MAKEERROR, 0); 1573 exit(2); /* Not 1, so -q can distinguish error */ 1574 } 1575 1576 /* 1577 * Finish -- 1578 * Called when aborting due to errors in child shell to signal 1579 * abnormal exit. 1580 * 1581 * Results: 1582 * None 1583 * 1584 * Side Effects: 1585 * The program exits 1586 */ 1587 void 1588 Finish(int errors) 1589 /* number of errors encountered in Make_Make */ 1590 { 1591 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1592 } 1593 1594 /* 1595 * emalloc -- 1596 * malloc, but die on error. 1597 */ 1598 void * 1599 emalloc(size_t len) 1600 { 1601 void *p; 1602 1603 if ((p = malloc(len)) == NULL) 1604 enomem(); 1605 return(p); 1606 } 1607 1608 /* 1609 * estrdup -- 1610 * strdup, but die on error. 1611 */ 1612 char * 1613 estrdup(const char *str) 1614 { 1615 char *p; 1616 1617 if ((p = strdup(str)) == NULL) 1618 enomem(); 1619 return(p); 1620 } 1621 1622 /* 1623 * erealloc -- 1624 * realloc, but die on error. 1625 */ 1626 void * 1627 erealloc(void *ptr, size_t size) 1628 { 1629 if ((ptr = realloc(ptr, size)) == NULL) 1630 enomem(); 1631 return(ptr); 1632 } 1633 1634 /* 1635 * enomem -- 1636 * die when out of memory. 1637 */ 1638 void 1639 enomem(void) 1640 { 1641 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 1642 exit(2); 1643 } 1644 1645 /* 1646 * enunlink -- 1647 * Remove a file carefully, avoiding directories. 1648 */ 1649 int 1650 eunlink(const char *file) 1651 { 1652 struct stat st; 1653 1654 if (lstat(file, &st) == -1) 1655 return -1; 1656 1657 if (S_ISDIR(st.st_mode)) { 1658 errno = EISDIR; 1659 return -1; 1660 } 1661 return unlink(file); 1662 } 1663 1664 /* 1665 * execError -- 1666 * Print why exec failed, avoiding stdio. 1667 */ 1668 void 1669 execError(const char *af, const char *av) 1670 { 1671 #ifdef USE_IOVEC 1672 int i = 0; 1673 struct iovec iov[8]; 1674 #define IOADD(s) \ 1675 (void)(iov[i].iov_base = UNCONST(s), \ 1676 iov[i].iov_len = strlen(iov[i].iov_base), \ 1677 i++) 1678 #else 1679 #define IOADD (void)write(2, s, strlen(s)) 1680 #endif 1681 1682 IOADD(progname); 1683 IOADD(": "); 1684 IOADD(af); 1685 IOADD("("); 1686 IOADD(av); 1687 IOADD(") failed ("); 1688 IOADD(strerror(errno)); 1689 IOADD(")\n"); 1690 1691 #ifdef USE_IOVEC 1692 (void)writev(2, iov, 8); 1693 #endif 1694 } 1695 1696 /* 1697 * usage -- 1698 * exit with usage message 1699 */ 1700 static void 1701 usage(void) 1702 { 1703 (void)fprintf(stderr, 1704 "usage: %s [-BeikNnqrstWX] [-D variable] [-d flags] [-f makefile]\n\ 1705 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1706 [-V variable] [variable=value] [target ...]\n", progname); 1707 exit(2); 1708 } 1709 1710 1711 int 1712 PrintAddr(ClientData a, ClientData b) 1713 { 1714 printf("%lx ", (unsigned long) a); 1715 return b ? 0 : 0; 1716 } 1717 1718 1719 1720 void 1721 PrintOnError(const char *s) 1722 { 1723 char tmp[64]; 1724 1725 if (s) 1726 printf("%s", s); 1727 1728 printf("\n%s: stopped in %s\n", progname, curdir); 1729 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1730 sizeof(tmp) - 1); 1731 s = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1732 if (s && *s) 1733 printf("%s", s); 1734 } 1735 1736 void 1737 Main_ExportMAKEFLAGS(Boolean first) 1738 { 1739 static int once = 1; 1740 char tmp[64]; 1741 char *s; 1742 1743 if (once != first) 1744 return; 1745 once = 0; 1746 1747 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1748 sizeof(tmp)); 1749 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1750 if (s && *s) { 1751 #ifdef POSIX 1752 setenv("MAKEFLAGS", s, 1); 1753 #else 1754 setenv("MAKE", s, 1); 1755 #endif 1756 } 1757 } 1758
Indexes created Mon Sep 22 13:09:51 GMT 2025