main.c revision 1.122
1 /* $NetBSD: main.c,v 1.122 2006/03/17 15:39:44 christos 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 1.122 2006/03/17 15:39:44 christos 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 1.122 2006/03/17 15:39:44 christos 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 Boolean compatMake; /* -B argument */ 160 int debug; /* -d argument */ 161 Boolean noExecute; /* -n flag */ 162 Boolean noRecursiveExecute; /* -N flag */ 163 Boolean keepgoing; /* -k flag */ 164 Boolean queryFlag; /* -q flag */ 165 Boolean touchFlag; /* -t flag */ 166 Boolean usePipes; /* !-P flag */ 167 Boolean ignoreErrors; /* -i flag */ 168 Boolean beSilent; /* -s flag */ 169 Boolean oldVars; /* variable substitution style */ 170 Boolean checkEnvFirst; /* -e flag */ 171 Boolean parseWarnFatal; /* -W flag */ 172 Boolean jobServer; /* -J flag */ 173 Boolean varNoExportEnv; /* -X flag */ 174 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 175 static const char * tracefile; 176 static char * Check_Cwd_av(int, char **, int); 177 static void MainParseArgs(int, char **); 178 static int ReadMakefile(ClientData, ClientData); 179 static void usage(void); 180 181 static char curdir[MAXPATHLEN + 1]; /* startup directory */ 182 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 183 char *progname; /* the program name */ 184 185 Boolean forceJobs = FALSE; 186 187 extern Lst parseIncPath; 188 189 /*- 190 * MainParseArgs -- 191 * Parse a given argument vector. Called from main() and from 192 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 193 * 194 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 195 * 196 * Results: 197 * None 198 * 199 * Side Effects: 200 * Various global and local flags will be set depending on the flags 201 * given 202 */ 203 static void 204 MainParseArgs(int argc, char **argv) 205 { 206 char *p; 207 int c = '?'; 208 int arginc; 209 char *argvalue, *modules; 210 const char *getopt_def; 211 char *optscan; 212 Boolean inOption, dashDash = FALSE; 213 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 214 215 #define OPTFLAGS "BD:I:J:NPST:V:WXd:ef:ij:km:nqrst" 216 /* Can't actually use getopt(3) because rescanning is not portable */ 217 218 getopt_def = OPTFLAGS; 219 rearg: 220 inOption = FALSE; 221 optscan = NULL; 222 while(argc > 1) { 223 char *getopt_spec; 224 if(!inOption) 225 optscan = argv[1]; 226 c = *optscan++; 227 arginc = 0; 228 if(inOption) { 229 if(c == '\0') { 230 ++argv; 231 --argc; 232 inOption = FALSE; 233 continue; 234 } 235 } else { 236 if (c != '-' || dashDash) 237 break; 238 inOption = TRUE; 239 c = *optscan++; 240 } 241 /* '-' found at some earlier point */ 242 getopt_spec = strchr(getopt_def, c); 243 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 244 /* -<something> found, and <something> should have an arg */ 245 inOption = FALSE; 246 arginc = 1; 247 argvalue = optscan; 248 if(*argvalue == '\0') { 249 if (argc < 3) 250 goto noarg; 251 argvalue = argv[2]; 252 arginc = 2; 253 } 254 } else { 255 argvalue = NULL; 256 } 257 switch(c) { 258 case '\0': 259 arginc = 1; 260 inOption = FALSE; 261 break; 262 case 'B': 263 compatMake = TRUE; 264 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 265 break; 266 case 'D': 267 if (argvalue == NULL) goto noarg; 268 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 269 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 270 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 271 break; 272 case 'I': 273 if (argvalue == NULL) goto noarg; 274 Parse_AddIncludeDir(argvalue); 275 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 276 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 277 break; 278 case 'J': 279 if (argvalue == NULL) goto noarg; 280 if (sscanf(argvalue, "%d,%d", &job_pipe[0], &job_pipe[1]) != 2) { 281 /* backslash to avoid trigraph ??) */ 282 (void)fprintf(stderr, 283 "%s: internal error -- J option malformed (%s?\?)\n", 284 progname, argvalue); 285 usage(); 286 } 287 if ((fcntl(job_pipe[0], F_GETFD, 0) < 0) || 288 (fcntl(job_pipe[1], F_GETFD, 0) < 0)) { 289 #if 0 290 (void)fprintf(stderr, 291 "%s: ###### warning -- J descriptors were closed!\n", 292 progname); 293 exit(2); 294 #endif 295 job_pipe[0] = -1; 296 job_pipe[1] = -1; 297 compatMake = TRUE; 298 } else { 299 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 300 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 301 jobServer = TRUE; 302 } 303 break; 304 case 'N': 305 noExecute = TRUE; 306 noRecursiveExecute = TRUE; 307 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 308 break; 309 case 'P': 310 usePipes = FALSE; 311 Var_Append(MAKEFLAGS, "-P", VAR_GLOBAL); 312 break; 313 case 'S': 314 keepgoing = FALSE; 315 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 316 break; 317 case 'T': 318 if (argvalue == NULL) goto noarg; 319 tracefile = estrdup(argvalue); 320 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 321 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 322 break; 323 case 'V': 324 if (argvalue == NULL) goto noarg; 325 printVars = TRUE; 326 (void)Lst_AtEnd(variables, (ClientData)argvalue); 327 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 328 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 329 break; 330 case 'W': 331 parseWarnFatal = TRUE; 332 break; 333 case 'X': 334 varNoExportEnv = TRUE; 335 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 336 break; 337 case 'd': { 338 if (argvalue == NULL) goto noarg; 339 for (modules = argvalue; *modules; ++modules) 340 switch (*modules) { 341 case 'A': 342 debug = ~0; 343 break; 344 case 'a': 345 debug |= DEBUG_ARCH; 346 break; 347 case 'c': 348 debug |= DEBUG_COND; 349 break; 350 case 'd': 351 debug |= DEBUG_DIR; 352 break; 353 case 'e': 354 debug |= DEBUG_ERROR; 355 break; 356 case 'f': 357 debug |= DEBUG_FOR; 358 break; 359 case 'g': 360 if (modules[1] == '1') { 361 debug |= DEBUG_GRAPH1; 362 ++modules; 363 } 364 else if (modules[1] == '2') { 365 debug |= DEBUG_GRAPH2; 366 ++modules; 367 } 368 else if (modules[1] == '3') { 369 debug |= DEBUG_GRAPH3; 370 ++modules; 371 } 372 break; 373 case 'j': 374 debug |= DEBUG_JOB; 375 break; 376 case 'm': 377 debug |= DEBUG_MAKE; 378 break; 379 case 'n': 380 debug |= DEBUG_SCRIPT; 381 break; 382 case 'p': 383 debug |= DEBUG_PARSE; 384 break; 385 case 's': 386 debug |= DEBUG_SUFF; 387 break; 388 case 't': 389 debug |= DEBUG_TARG; 390 break; 391 case 'v': 392 debug |= DEBUG_VAR; 393 break; 394 case 'x': 395 debug |= DEBUG_SHELL; 396 break; 397 default: 398 (void)fprintf(stderr, 399 "%s: illegal argument to d option -- %c\n", 400 progname, *modules); 401 usage(); 402 } 403 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 404 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 405 break; 406 } 407 case 'e': 408 checkEnvFirst = TRUE; 409 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 410 break; 411 case 'f': 412 if (argvalue == NULL) goto noarg; 413 (void)Lst_AtEnd(makefiles, (ClientData)argvalue); 414 break; 415 case 'i': 416 ignoreErrors = TRUE; 417 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 418 break; 419 case 'j': 420 if (argvalue == NULL) goto noarg; 421 forceJobs = TRUE; 422 maxJobs = strtol(argvalue, &p, 0); 423 if (*p != '\0' || maxJobs < 1) { 424 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 425 progname); 426 exit(1); 427 } 428 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 429 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 430 break; 431 case 'k': 432 keepgoing = TRUE; 433 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 434 break; 435 case 'm': 436 if (argvalue == NULL) goto noarg; 437 /* look for magic parent directory search string */ 438 if (strncmp(".../", argvalue, 4) == 0) { 439 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 440 found_path, sizeof(found_path))) 441 break; /* nothing doing */ 442 (void)Dir_AddDir(sysIncPath, found_path); 443 444 } else { 445 (void)Dir_AddDir(sysIncPath, argvalue); 446 } 447 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 448 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 449 break; 450 case 'n': 451 noExecute = TRUE; 452 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 453 break; 454 case 'q': 455 queryFlag = TRUE; 456 /* Kind of nonsensical, wot? */ 457 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 458 break; 459 case 'r': 460 noBuiltins = TRUE; 461 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 462 break; 463 case 's': 464 beSilent = TRUE; 465 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 466 break; 467 case 't': 468 touchFlag = TRUE; 469 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 470 break; 471 case '-': 472 dashDash = TRUE; 473 break; 474 default: 475 case '?': 476 usage(); 477 } 478 argv += arginc; 479 argc -= arginc; 480 } 481 482 oldVars = TRUE; 483 484 /* 485 * See if the rest of the arguments are variable assignments and 486 * perform them if so. Else take them to be targets and stuff them 487 * on the end of the "create" list. 488 */ 489 for (; argc > 1; ++argv, --argc) 490 if (Parse_IsVar(argv[1])) { 491 Parse_DoVar(argv[1], VAR_CMD); 492 } else { 493 if (!*argv[1]) 494 Punt("illegal (null) argument."); 495 if (*argv[1] == '-' && !dashDash) 496 goto rearg; 497 (void)Lst_AtEnd(create, (ClientData)estrdup(argv[1])); 498 } 499 500 return; 501 noarg: 502 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 503 progname, c); 504 usage(); 505 } 506 507 /*- 508 * Main_ParseArgLine -- 509 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 510 * is encountered and by main() when reading the .MAKEFLAGS envariable. 511 * Takes a line of arguments and breaks it into its 512 * component words and passes those words and the number of them to the 513 * MainParseArgs function. 514 * The line should have all its leading whitespace removed. 515 * 516 * Input: 517 * line Line to fracture 518 * 519 * Results: 520 * None 521 * 522 * Side Effects: 523 * Only those that come from the various arguments. 524 */ 525 void 526 Main_ParseArgLine(char *line) 527 { 528 char **argv; /* Manufactured argument vector */ 529 int argc; /* Number of arguments in argv */ 530 char *args; /* Space used by the args */ 531 char *buf, *p1; 532 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 533 size_t len; 534 535 if (line == NULL) 536 return; 537 for (; *line == ' '; ++line) 538 continue; 539 if (!*line) 540 return; 541 542 buf = emalloc(len = strlen(line) + strlen(argv0) + 2); 543 (void)snprintf(buf, len, "%s %s", argv0, line); 544 if (p1) 545 free(p1); 546 547 argv = brk_string(buf, &argc, TRUE, &args); 548 free(buf); 549 MainParseArgs(argc, argv); 550 551 free(args); 552 free(argv); 553 } 554 555 Boolean 556 Main_SetObjdir(const char *path) 557 { 558 struct stat sb; 559 char *p = NULL; 560 char buf[MAXPATHLEN + 1]; 561 Boolean rc = FALSE; 562 563 /* expand variable substitutions */ 564 if (strchr(path, '$') != 0) { 565 snprintf(buf, MAXPATHLEN, "%s", path); 566 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 567 } 568 569 if (path[0] != '/') { 570 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 571 path = buf; 572 } 573 574 /* look for the directory and try to chdir there */ 575 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 576 if (chdir(path)) { 577 (void)fprintf(stderr, "make warning: %s: %s.\n", 578 path, strerror(errno)); 579 } else { 580 strncpy(objdir, path, MAXPATHLEN); 581 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 582 setenv("PWD", objdir, 1); 583 Dir_InitDot(); 584 rc = TRUE; 585 } 586 } 587 588 if (p) 589 free(p); 590 return rc; 591 } 592 593 594 /*- 595 * main -- 596 * The main function, for obvious reasons. Initializes variables 597 * and a few modules, then parses the arguments give it in the 598 * environment and on the command line. Reads the system makefile 599 * followed by either Makefile, makefile or the file given by the 600 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 601 * flags it has received by then uses either the Make or the Compat 602 * module to create the initial list of targets. 603 * 604 * Results: 605 * If -q was given, exits -1 if anything was out-of-date. Else it exits 606 * 0. 607 * 608 * Side Effects: 609 * The program exits when done. Targets are created. etc. etc. etc. 610 */ 611 int 612 main(int argc, char **argv) 613 { 614 Lst targs; /* target nodes to create -- passed to Make_Init */ 615 Boolean outOfDate = TRUE; /* FALSE if all targets up to date */ 616 struct stat sb, sa; 617 char *p1, *path, *pwd; 618 char mdpath[MAXPATHLEN]; 619 char *machine = getenv("MACHINE"); 620 const char *machine_arch = getenv("MACHINE_ARCH"); 621 char *syspath = getenv("MAKESYSPATH"); 622 Lst sysMkPath; /* Path of sys.mk */ 623 char *cp = NULL, *start; 624 /* avoid faults on read-only strings */ 625 static char defsyspath[] = _PATH_DEFSYSPATH; 626 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 627 struct timeval rightnow; /* to initialize random seed */ 628 #ifdef MAKE_NATIVE 629 struct utsname utsname; 630 #endif 631 632 /* 633 * Set the seed to produce a different random sequences 634 * on each program execution. 635 */ 636 gettimeofday(&rightnow, NULL); 637 srandom(rightnow.tv_sec + rightnow.tv_usec); 638 639 if ((progname = strrchr(argv[0], '/')) != NULL) 640 progname++; 641 else 642 progname = argv[0]; 643 #ifdef RLIMIT_NOFILE 644 /* 645 * get rid of resource limit on file descriptors 646 */ 647 { 648 struct rlimit rl; 649 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 650 rl.rlim_cur != rl.rlim_max) { 651 rl.rlim_cur = rl.rlim_max; 652 (void)setrlimit(RLIMIT_NOFILE, &rl); 653 } 654 } 655 #endif 656 /* 657 * Find where we are and take care of PWD for the automounter... 658 * All this code is so that we know where we are when we start up 659 * on a different machine with pmake. 660 */ 661 if (getcwd(curdir, MAXPATHLEN) == NULL) { 662 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 663 exit(2); 664 } 665 666 if (stat(curdir, &sa) == -1) { 667 (void)fprintf(stderr, "%s: %s: %s.\n", 668 progname, curdir, strerror(errno)); 669 exit(2); 670 } 671 672 /* 673 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 674 * since the value of curdir can very depending on how we got 675 * here. Ie sitting at a shell prompt (shell that provides $PWD) 676 * or via subdir.mk in which case its likely a shell which does 677 * not provide it. 678 * So, to stop it breaking this case only, we ignore PWD if 679 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 680 */ 681 if ((pwd = getenv("PWD")) != NULL && getenv("MAKEOBJDIRPREFIX") == NULL) { 682 const char *makeobjdir = getenv("MAKEOBJDIR"); 683 684 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 685 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 686 sa.st_dev == sb.st_dev) 687 (void)strncpy(curdir, pwd, MAXPATHLEN); 688 } 689 } 690 691 /* 692 * Get the name of this type of MACHINE from utsname 693 * so we can share an executable for similar machines. 694 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 695 * 696 * Note that both MACHINE and MACHINE_ARCH are decided at 697 * run-time. 698 */ 699 if (!machine) { 700 #ifdef MAKE_NATIVE 701 if (uname(&utsname) == -1) { 702 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 703 strerror(errno)); 704 exit(2); 705 } 706 machine = utsname.machine; 707 #else 708 #ifdef MAKE_MACHINE 709 machine = MAKE_MACHINE; 710 #else 711 machine = "unknown"; 712 #endif 713 #endif 714 } 715 716 if (!machine_arch) { 717 #ifndef MACHINE_ARCH 718 #ifdef MAKE_MACHINE_ARCH 719 machine_arch = MAKE_MACHINE_ARCH; 720 #else 721 machine_arch = "unknown"; 722 #endif 723 #else 724 machine_arch = MACHINE_ARCH; 725 #endif 726 } 727 728 /* 729 * Just in case MAKEOBJDIR wants us to do something tricky. 730 */ 731 Var_Init(); /* Initialize the lists of variables for 732 * parsing arguments */ 733 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 734 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 735 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 736 #ifdef MAKE_VERSION 737 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 738 #endif 739 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 740 741 /* 742 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 743 * MAKEOBJDIR is set in the environment, try only that value 744 * and fall back to .CURDIR if it does not exist. 745 * 746 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 747 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 748 * of these paths exist, just use .CURDIR. 749 */ 750 Dir_Init(curdir); 751 (void)Main_SetObjdir(curdir); 752 753 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 754 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 755 (void)Main_SetObjdir(mdpath); 756 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 757 (void)Main_SetObjdir(path); 758 } else { 759 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 760 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 761 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 762 _PATH_OBJDIRPREFIX, curdir); 763 (void)Main_SetObjdir(mdpath); 764 } 765 } 766 767 create = Lst_Init(FALSE); 768 makefiles = Lst_Init(FALSE); 769 printVars = FALSE; 770 variables = Lst_Init(FALSE); 771 beSilent = FALSE; /* Print commands as executed */ 772 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 773 noExecute = FALSE; /* Execute all commands */ 774 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 775 keepgoing = FALSE; /* Stop on error */ 776 allPrecious = FALSE; /* Remove targets when interrupted */ 777 queryFlag = FALSE; /* This is not just a check-run */ 778 noBuiltins = FALSE; /* Read the built-in rules */ 779 touchFlag = FALSE; /* Actually update targets */ 780 usePipes = TRUE; /* Catch child output in pipes */ 781 debug = 0; /* No debug verbosity, please. */ 782 jobsRunning = FALSE; 783 784 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 785 compatMake = FALSE; /* No compat mode */ 786 787 788 /* 789 * Initialize the parsing, directory and variable modules to prepare 790 * for the reading of inclusion paths and variable settings on the 791 * command line 792 */ 793 794 /* 795 * Initialize various variables. 796 * MAKE also gets this name, for compatibility 797 * .MAKEFLAGS gets set to the empty string just in case. 798 * MFLAGS also gets initialized empty, for compatibility. 799 */ 800 Parse_Init(); 801 Var_Set("MAKE", argv[0], VAR_GLOBAL, 0); 802 Var_Set(".MAKE", argv[0], VAR_GLOBAL, 0); 803 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 804 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 805 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 806 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 807 808 /* 809 * First snag any flags out of the MAKE environment variable. 810 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 811 * in a different format). 812 */ 813 #ifdef POSIX 814 Main_ParseArgLine(getenv("MAKEFLAGS")); 815 #else 816 Main_ParseArgLine(getenv("MAKE")); 817 #endif 818 819 MainParseArgs(argc, argv); 820 821 /* 822 * Be compatible if user did not specify -j and did not explicitly 823 * turned compatibility on 824 */ 825 if (!compatMake && !forceJobs) { 826 compatMake = TRUE; 827 } 828 829 /* 830 * Initialize archive, target and suffix modules in preparation for 831 * parsing the makefile(s) 832 */ 833 Arch_Init(); 834 Targ_Init(); 835 Suff_Init(); 836 Trace_Init(tracefile); 837 838 DEFAULT = NILGNODE; 839 (void)time(&now); 840 841 Trace_Log(MAKESTART, NULL); 842 843 /* 844 * Set up the .TARGETS variable to contain the list of targets to be 845 * created. If none specified, make the variable empty -- the parser 846 * will fill the thing in with the default or .MAIN target. 847 */ 848 if (!Lst_IsEmpty(create)) { 849 LstNode ln; 850 851 for (ln = Lst_First(create); ln != NILLNODE; 852 ln = Lst_Succ(ln)) { 853 char *name = (char *)Lst_Datum(ln); 854 855 Var_Append(".TARGETS", name, VAR_GLOBAL); 856 } 857 } else 858 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 859 860 861 /* 862 * If no user-supplied system path was given (through the -m option) 863 * add the directories from the DEFSYSPATH (more than one may be given 864 * as dir1:...:dirn) to the system include path. 865 */ 866 if (syspath == NULL || *syspath == '\0') 867 syspath = defsyspath; 868 else 869 syspath = strdup(syspath); 870 871 for (start = syspath; *start != '\0'; start = cp) { 872 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 873 continue; 874 if (*cp == ':') { 875 *cp++ = '\0'; 876 } 877 /* look for magic parent directory search string */ 878 if (strncmp(".../", start, 4) != 0) { 879 (void)Dir_AddDir(defIncPath, start); 880 } else { 881 if (Dir_FindHereOrAbove(curdir, start+4, 882 found_path, sizeof(found_path))) { 883 (void)Dir_AddDir(defIncPath, found_path); 884 } 885 } 886 } 887 if (syspath != defsyspath) 888 free(syspath); 889 890 /* 891 * Read in the built-in rules first, followed by the specified 892 * makefile, if it was (makefile != NULL), or the default 893 * makefile and Makefile, in that order, if it wasn't. 894 */ 895 if (!noBuiltins) { 896 LstNode ln; 897 898 sysMkPath = Lst_Init(FALSE); 899 Dir_Expand(_PATH_DEFSYSMK, 900 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 901 sysMkPath); 902 if (Lst_IsEmpty(sysMkPath)) 903 Fatal("%s: no system rules (%s).", progname, 904 _PATH_DEFSYSMK); 905 ln = Lst_Find(sysMkPath, (ClientData)NULL, ReadMakefile); 906 if (ln != NILLNODE) 907 Fatal("%s: cannot open %s.", progname, 908 (char *)Lst_Datum(ln)); 909 } 910 911 if (!Lst_IsEmpty(makefiles)) { 912 LstNode ln; 913 914 ln = Lst_Find(makefiles, (ClientData)NULL, ReadMakefile); 915 if (ln != NILLNODE) 916 Fatal("%s: cannot open %s.", progname, 917 (char *)Lst_Datum(ln)); 918 } else if (!ReadMakefile(UNCONST("makefile"), NULL)) 919 (void)ReadMakefile(UNCONST("Makefile"), NULL); 920 921 (void)ReadMakefile(UNCONST(".depend"), NULL); 922 923 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 924 if (p1) 925 free(p1); 926 927 if (!jobServer && !compatMake) 928 Job_ServerStart(maxJobs); 929 if (DEBUG(JOB)) 930 printf("job_pipe %d %d, maxjobs %d compat %d\n", 931 job_pipe[0], job_pipe[1], maxJobs, compatMake); 932 933 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 934 935 Check_Cwd_av(0, NULL, 0); /* initialize it */ 936 937 938 /* 939 * For compatibility, look at the directories in the VPATH variable 940 * and add them to the search path, if the variable is defined. The 941 * variable's value is in the same format as the PATH envariable, i.e. 942 * <directory>:<directory>:<directory>... 943 */ 944 if (Var_Exists("VPATH", VAR_CMD)) { 945 char *vpath, savec; 946 /* 947 * GCC stores string constants in read-only memory, but 948 * Var_Subst will want to write this thing, so store it 949 * in an array 950 */ 951 static char VPATH[] = "${VPATH}"; 952 953 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 954 path = vpath; 955 do { 956 /* skip to end of directory */ 957 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 958 continue; 959 /* Save terminator character so know when to stop */ 960 savec = *cp; 961 *cp = '\0'; 962 /* Add directory to search path */ 963 (void)Dir_AddDir(dirSearchPath, path); 964 *cp = savec; 965 path = cp + 1; 966 } while (savec == ':'); 967 free(vpath); 968 } 969 970 /* 971 * Now that all search paths have been read for suffixes et al, it's 972 * time to add the default search path to their lists... 973 */ 974 Suff_DoPaths(); 975 976 /* 977 * Propagate attributes through :: dependency lists. 978 * 979 * Also propagate recursive dependencies for .WAIT. 980 */ 981 Targ_Propagate(); 982 983 /* print the initial graph, if the user requested it */ 984 if (DEBUG(GRAPH1)) 985 Targ_PrintGraph(1); 986 987 /* print the values of any variables requested by the user */ 988 if (printVars) { 989 LstNode ln; 990 991 for (ln = Lst_First(variables); ln != NILLNODE; 992 ln = Lst_Succ(ln)) { 993 char *var = (char *)Lst_Datum(ln); 994 char *value; 995 996 if (strchr(var, '$')) { 997 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 998 } else { 999 value = Var_Value(var, VAR_GLOBAL, &p1); 1000 } 1001 printf("%s\n", value ? value : ""); 1002 if (p1) 1003 free(p1); 1004 } 1005 } 1006 1007 /* 1008 * Have now read the entire graph and need to make a list of targets 1009 * to create. If none was given on the command line, we consult the 1010 * parsing module to find the main target(s) to create. 1011 */ 1012 if (Lst_IsEmpty(create)) 1013 targs = Parse_MainName(); 1014 else 1015 targs = Targ_FindList(create, TARG_CREATE); 1016 1017 if (!compatMake && !printVars) { 1018 /* 1019 * Initialize job module before traversing the graph, now that 1020 * any .BEGIN and .END targets have been read. This is done 1021 * only if the -q flag wasn't given (to prevent the .BEGIN from 1022 * being executed should it exist). 1023 */ 1024 if (!queryFlag) { 1025 Job_Init(maxJobs); 1026 jobsRunning = TRUE; 1027 } 1028 1029 /* Traverse the graph, checking on all the targets */ 1030 outOfDate = Make_Run(targs); 1031 } else if (!printVars) { 1032 /* 1033 * Compat_Init will take care of creating all the targets as 1034 * well as initializing the module. 1035 */ 1036 Compat_Run(targs); 1037 } 1038 1039 #ifdef CLEANUP 1040 Lst_Destroy(targs, NOFREE); 1041 Lst_Destroy(variables, NOFREE); 1042 Lst_Destroy(makefiles, NOFREE); 1043 Lst_Destroy(create, (FreeProc *)free); 1044 #endif 1045 1046 /* print the graph now it's been processed if the user requested it */ 1047 if (DEBUG(GRAPH2)) 1048 Targ_PrintGraph(2); 1049 1050 Trace_Log(MAKEEND, 0); 1051 1052 Suff_End(); 1053 Targ_End(); 1054 Arch_End(); 1055 Var_End(); 1056 Parse_End(); 1057 Dir_End(); 1058 Job_End(); 1059 Trace_End(); 1060 1061 if (queryFlag && outOfDate) 1062 return(1); 1063 else 1064 return(0); 1065 } 1066 1067 /*- 1068 * ReadMakefile -- 1069 * Open and parse the given makefile. 1070 * 1071 * Results: 1072 * TRUE if ok. FALSE if couldn't open file. 1073 * 1074 * Side Effects: 1075 * lots 1076 */ 1077 static Boolean 1078 ReadMakefile(ClientData p, ClientData q __unused) 1079 { 1080 char *fname = p; /* makefile to read */ 1081 FILE *stream; 1082 size_t len = MAXPATHLEN; 1083 char *name, *path = emalloc(len); 1084 int setMAKEFILE; 1085 1086 if (!strcmp(fname, "-")) { 1087 Parse_File("(stdin)", stdin); 1088 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1089 } else { 1090 setMAKEFILE = strcmp(fname, ".depend"); 1091 1092 /* if we've chdir'd, rebuild the path name */ 1093 if (strcmp(curdir, objdir) && *fname != '/') { 1094 size_t plen = strlen(curdir) + strlen(fname) + 2; 1095 if (len < plen) 1096 path = erealloc(path, len = 2 * plen); 1097 1098 (void)snprintf(path, len, "%s/%s", curdir, fname); 1099 if ((stream = fopen(path, "r")) != NULL) { 1100 fname = path; 1101 goto found; 1102 } 1103 1104 /* If curdir failed, try objdir (ala .depend) */ 1105 plen = strlen(objdir) + strlen(fname) + 2; 1106 if (len < plen) 1107 path = erealloc(path, len = 2 * plen); 1108 (void)snprintf(path, len, "%s/%s", objdir, fname); 1109 if ((stream = fopen(path, "r")) != NULL) { 1110 fname = path; 1111 goto found; 1112 } 1113 } else if ((stream = fopen(fname, "r")) != NULL) 1114 goto found; 1115 /* look in -I and system include directories. */ 1116 name = Dir_FindFile(fname, parseIncPath); 1117 if (!name) 1118 name = Dir_FindFile(fname, 1119 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1120 if (!name || !(stream = fopen(name, "r"))) { 1121 free(path); 1122 return(FALSE); 1123 } 1124 fname = name; 1125 /* 1126 * set the MAKEFILE variable desired by System V fans -- the 1127 * placement of the setting here means it gets set to the last 1128 * makefile specified, as it is set by SysV make. 1129 */ 1130 found: 1131 if (setMAKEFILE) 1132 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1133 Parse_File(fname, stream); 1134 (void)fclose(stream); 1135 } 1136 free(path); 1137 return(TRUE); 1138 } 1139 1140 1141 /* 1142 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1143 * in situations that would not arrise with ./obj (links or not). 1144 * This tends to break things like: 1145 * 1146 * build: 1147 * ${MAKE} includes 1148 * 1149 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1150 * opposed to an argument) in a command line and if so returns 1151 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1152 * the Makefile hold true. 1153 * 1154 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1155 * 1156 * The chdir() only happens in the child process, and does nothing if 1157 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1158 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1159 * do nothing - to ensure historic semantics can be retained. 1160 */ 1161 static int Check_Cwd_Off = 0; 1162 1163 static char * 1164 Check_Cwd_av(int ac, char **av, int copy) 1165 { 1166 static char *make[4]; 1167 static char *cur_dir = NULL; 1168 char **mp; 1169 char *cp; 1170 int is_cmd, next_cmd; 1171 int i; 1172 int n; 1173 1174 if (Check_Cwd_Off) 1175 return NULL; 1176 1177 if (make[0] == NULL) { 1178 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1179 Check_Cwd_Off = 1; 1180 return NULL; 1181 } 1182 1183 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1184 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1185 make[0] = make[1]; 1186 make[1] = NULL; 1187 } else 1188 ++make[0]; 1189 make[2] = NULL; 1190 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1191 } 1192 if (ac == 0 || av == NULL) 1193 return NULL; /* initialization only */ 1194 1195 if (getenv("MAKEOBJDIR") == NULL && 1196 getenv("MAKEOBJDIRPREFIX") == NULL) 1197 return NULL; 1198 1199 1200 next_cmd = 1; 1201 for (i = 0; i < ac; ++i) { 1202 is_cmd = next_cmd; 1203 1204 n = strlen(av[i]); 1205 cp = &(av[i])[n - 1]; 1206 if (strspn(av[i], "|&;") == n) { 1207 next_cmd = 1; 1208 continue; 1209 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1210 next_cmd = 1; 1211 if (copy) { 1212 do { 1213 *cp-- = '\0'; 1214 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1215 *cp == ')' || *cp == '}') ; 1216 } else { 1217 /* 1218 * XXX this should not happen. 1219 */ 1220 fprintf(stderr, "WARNING: raw arg ends in shell meta '%s'\n", 1221 av[i]); 1222 } 1223 } else 1224 next_cmd = 0; 1225 1226 cp = av[i]; 1227 if (*cp == ';' || *cp == '&' || *cp == '|') 1228 is_cmd = 1; 1229 1230 #ifdef check_cwd_debug 1231 fprintf(stderr, "av[%d] == %s '%s'", 1232 i, (is_cmd) ? "cmd" : "arg", av[i]); 1233 #endif 1234 if (is_cmd != 0) { 1235 if (*cp == '(' || *cp == '{' || 1236 *cp == ';' || *cp == '&' || *cp == '|') { 1237 do { 1238 ++cp; 1239 } while (*cp == '(' || *cp == '{' || 1240 *cp == ';' || *cp == '&' || *cp == '|'); 1241 if (*cp == '\0') { 1242 next_cmd = 1; 1243 continue; 1244 } 1245 } 1246 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1247 #ifdef check_cwd_debug 1248 fprintf(stderr, " == cd, done.\n"); 1249 #endif 1250 return NULL; 1251 } 1252 for (mp = make; *mp != NULL; ++mp) { 1253 n = strlen(*mp); 1254 if (strcmp(cp, *mp) == 0) { 1255 #ifdef check_cwd_debug 1256 fprintf(stderr, " %s == '%s', chdir(%s)\n", 1257 cp, *mp, cur_dir); 1258 #endif 1259 return cur_dir; 1260 } 1261 } 1262 } 1263 #ifdef check_cwd_debug 1264 fprintf(stderr, "\n"); 1265 #endif 1266 } 1267 return NULL; 1268 } 1269 1270 char * 1271 Check_Cwd_Cmd(const char *cmd) 1272 { 1273 char *cp, *bp; 1274 char **av; 1275 int ac; 1276 1277 if (Check_Cwd_Off) 1278 return NULL; 1279 1280 if (cmd) { 1281 av = brk_string(cmd, &ac, TRUE, &bp); 1282 #ifdef check_cwd_debug 1283 fprintf(stderr, "splitting: '%s' -> %d words\n", 1284 cmd, ac); 1285 #endif 1286 } else { 1287 ac = 0; 1288 av = NULL; 1289 bp = NULL; 1290 } 1291 cp = Check_Cwd_av(ac, av, 1); 1292 if (bp) { 1293 free(av); 1294 free(bp); 1295 } 1296 return cp; 1297 } 1298 1299 void 1300 Check_Cwd(const char **argv) 1301 { 1302 char *cp; 1303 int ac; 1304 1305 if (Check_Cwd_Off) 1306 return; 1307 1308 for (ac = 0; argv[ac] != NULL; ++ac) 1309 /* NOTHING */; 1310 if (ac == 3 && *argv[1] == '-') { 1311 cp = Check_Cwd_Cmd(argv[2]); 1312 } else { 1313 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1314 } 1315 if (cp) { 1316 chdir(cp); 1317 } 1318 } 1319 1320 /*- 1321 * Cmd_Exec -- 1322 * Execute the command in cmd, and return the output of that command 1323 * in a string. 1324 * 1325 * Results: 1326 * A string containing the output of the command, or the empty string 1327 * If err is not NULL, it contains the reason for the command failure 1328 * 1329 * Side Effects: 1330 * The string must be freed by the caller. 1331 */ 1332 char * 1333 Cmd_Exec(const char *cmd, const char **err) 1334 { 1335 const char *args[4]; /* Args for invoking the shell */ 1336 int fds[2]; /* Pipe streams */ 1337 int cpid; /* Child PID */ 1338 int pid; /* PID from wait() */ 1339 char *res; /* result */ 1340 int status; /* command exit status */ 1341 Buffer buf; /* buffer to store the result */ 1342 char *cp; 1343 int cc; 1344 1345 1346 *err = NULL; 1347 1348 if (!shellName) 1349 Shell_Init(); 1350 /* 1351 * Set up arguments for shell 1352 */ 1353 args[0] = shellName; 1354 args[1] = "-c"; 1355 args[2] = cmd; 1356 args[3] = NULL; 1357 1358 /* 1359 * Open a pipe for fetching its output 1360 */ 1361 if (pipe(fds) == -1) { 1362 *err = "Couldn't create pipe for \"%s\""; 1363 goto bad; 1364 } 1365 1366 /* 1367 * Fork 1368 */ 1369 switch (cpid = vfork()) { 1370 case 0: 1371 /* 1372 * Close input side of pipe 1373 */ 1374 (void)close(fds[0]); 1375 1376 /* 1377 * Duplicate the output stream to the shell's output, then 1378 * shut the extra thing down. Note we don't fetch the error 1379 * stream...why not? Why? 1380 */ 1381 (void)dup2(fds[1], 1); 1382 (void)close(fds[1]); 1383 1384 (void)execv(shellPath, UNCONST(args)); 1385 _exit(1); 1386 /*NOTREACHED*/ 1387 1388 case -1: 1389 *err = "Couldn't exec \"%s\""; 1390 goto bad; 1391 1392 default: 1393 /* 1394 * No need for the writing half 1395 */ 1396 (void)close(fds[1]); 1397 1398 buf = Buf_Init(MAKE_BSIZE); 1399 1400 do { 1401 char result[BUFSIZ]; 1402 cc = read(fds[0], result, sizeof(result)); 1403 if (cc > 0) 1404 Buf_AddBytes(buf, cc, (Byte *)result); 1405 } 1406 while (cc > 0 || (cc == -1 && errno == EINTR)); 1407 1408 /* 1409 * Close the input side of the pipe. 1410 */ 1411 (void)close(fds[0]); 1412 1413 /* 1414 * Wait for the process to exit. 1415 */ 1416 while(((pid = wait(&status)) != cpid) && (pid >= 0)) 1417 continue; 1418 1419 res = (char *)Buf_GetAll(buf, &cc); 1420 Buf_Destroy(buf, FALSE); 1421 1422 if (cc == 0) 1423 *err = "Couldn't read shell's output for \"%s\""; 1424 1425 if (status) 1426 *err = "\"%s\" returned non-zero status"; 1427 1428 /* 1429 * Null-terminate the result, convert newlines to spaces and 1430 * install it in the variable. 1431 */ 1432 res[cc] = '\0'; 1433 cp = &res[cc]; 1434 1435 if (cc > 0 && *--cp == '\n') { 1436 /* 1437 * A final newline is just stripped 1438 */ 1439 *cp-- = '\0'; 1440 } 1441 while (cp >= res) { 1442 if (*cp == '\n') { 1443 *cp = ' '; 1444 } 1445 cp--; 1446 } 1447 break; 1448 } 1449 return res; 1450 bad: 1451 res = emalloc(1); 1452 *res = '\0'; 1453 return res; 1454 } 1455 1456 /*- 1457 * Error -- 1458 * Print an error message given its format. 1459 * 1460 * Results: 1461 * None. 1462 * 1463 * Side Effects: 1464 * The message is printed. 1465 */ 1466 /* VARARGS */ 1467 void 1468 Error(const char *fmt, ...) 1469 { 1470 va_list ap; 1471 1472 va_start(ap, fmt); 1473 fprintf(stderr, "%s: ", progname); 1474 (void)vfprintf(stderr, fmt, ap); 1475 va_end(ap); 1476 (void)fprintf(stderr, "\n"); 1477 (void)fflush(stderr); 1478 } 1479 1480 /*- 1481 * Fatal -- 1482 * Produce a Fatal error message. If jobs are running, waits for them 1483 * to finish. 1484 * 1485 * Results: 1486 * None 1487 * 1488 * Side Effects: 1489 * The program exits 1490 */ 1491 /* VARARGS */ 1492 void 1493 Fatal(const char *fmt, ...) 1494 { 1495 va_list ap; 1496 1497 va_start(ap, fmt); 1498 if (jobsRunning) 1499 Job_Wait(); 1500 1501 (void)vfprintf(stderr, fmt, ap); 1502 va_end(ap); 1503 (void)fprintf(stderr, "\n"); 1504 (void)fflush(stderr); 1505 1506 PrintOnError(NULL); 1507 1508 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1509 Targ_PrintGraph(2); 1510 Trace_Log(MAKEERROR, 0); 1511 exit(2); /* Not 1 so -q can distinguish error */ 1512 } 1513 1514 /* 1515 * Punt -- 1516 * Major exception once jobs are being created. Kills all jobs, prints 1517 * a message and exits. 1518 * 1519 * Results: 1520 * None 1521 * 1522 * Side Effects: 1523 * All children are killed indiscriminately and the program Lib_Exits 1524 */ 1525 /* VARARGS */ 1526 void 1527 Punt(const char *fmt, ...) 1528 { 1529 va_list ap; 1530 1531 va_start(ap, fmt); 1532 (void)fprintf(stderr, "%s: ", progname); 1533 (void)vfprintf(stderr, fmt, ap); 1534 va_end(ap); 1535 (void)fprintf(stderr, "\n"); 1536 (void)fflush(stderr); 1537 1538 PrintOnError(NULL); 1539 1540 DieHorribly(); 1541 } 1542 1543 /*- 1544 * DieHorribly -- 1545 * Exit without giving a message. 1546 * 1547 * Results: 1548 * None 1549 * 1550 * Side Effects: 1551 * A big one... 1552 */ 1553 void 1554 DieHorribly(void) 1555 { 1556 if (jobsRunning) 1557 Job_AbortAll(); 1558 if (DEBUG(GRAPH2)) 1559 Targ_PrintGraph(2); 1560 Trace_Log(MAKEERROR, 0); 1561 exit(2); /* Not 1, so -q can distinguish error */ 1562 } 1563 1564 /* 1565 * Finish -- 1566 * Called when aborting due to errors in child shell to signal 1567 * abnormal exit. 1568 * 1569 * Results: 1570 * None 1571 * 1572 * Side Effects: 1573 * The program exits 1574 */ 1575 void 1576 Finish(int errors) 1577 /* number of errors encountered in Make_Make */ 1578 { 1579 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1580 } 1581 1582 /* 1583 * emalloc -- 1584 * malloc, but die on error. 1585 */ 1586 void * 1587 emalloc(size_t len) 1588 { 1589 void *p; 1590 1591 if ((p = malloc(len)) == NULL) 1592 enomem(); 1593 return(p); 1594 } 1595 1596 /* 1597 * estrdup -- 1598 * strdup, but die on error. 1599 */ 1600 char * 1601 estrdup(const char *str) 1602 { 1603 char *p; 1604 1605 if ((p = strdup(str)) == NULL) 1606 enomem(); 1607 return(p); 1608 } 1609 1610 /* 1611 * erealloc -- 1612 * realloc, but die on error. 1613 */ 1614 void * 1615 erealloc(void *ptr, size_t size) 1616 { 1617 if ((ptr = realloc(ptr, size)) == NULL) 1618 enomem(); 1619 return(ptr); 1620 } 1621 1622 /* 1623 * enomem -- 1624 * die when out of memory. 1625 */ 1626 void 1627 enomem(void) 1628 { 1629 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 1630 exit(2); 1631 } 1632 1633 /* 1634 * enunlink -- 1635 * Remove a file carefully, avoiding directories. 1636 */ 1637 int 1638 eunlink(const char *file) 1639 { 1640 struct stat st; 1641 1642 if (lstat(file, &st) == -1) 1643 return -1; 1644 1645 if (S_ISDIR(st.st_mode)) { 1646 errno = EISDIR; 1647 return -1; 1648 } 1649 return unlink(file); 1650 } 1651 1652 /* 1653 * execError -- 1654 * Print why exec failed, avoiding stdio. 1655 */ 1656 void 1657 execError(const char *af, const char *av) 1658 { 1659 #ifdef USE_IOVEC 1660 int i = 0; 1661 struct iovec iov[8]; 1662 #define IOADD(s) \ 1663 (void)(iov[i].iov_base = UNCONST(s), \ 1664 iov[i].iov_len = strlen(iov[i].iov_base), \ 1665 i++) 1666 #else 1667 #define IOADD(void)write(2, s, strlen(s)) 1668 #endif 1669 1670 IOADD(progname); 1671 IOADD(": "); 1672 IOADD(af); 1673 IOADD("("); 1674 IOADD(av); 1675 IOADD(") failed ("); 1676 IOADD(strerror(errno)); 1677 IOADD(")\n"); 1678 1679 #ifdef USE_IOVEC 1680 (void)writev(2, iov, 8); 1681 #endif 1682 } 1683 1684 /* 1685 * usage -- 1686 * exit with usage message 1687 */ 1688 static void 1689 usage(void) 1690 { 1691 (void)fprintf(stderr, 1692 "usage: %s [-BeikNnqrstWX] [-D variable] [-d flags] [-f makefile]\n\ 1693 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1694 [-V variable] [variable=value] [target ...]\n", progname); 1695 exit(2); 1696 } 1697 1698 1699 int 1700 PrintAddr(ClientData a, ClientData b) 1701 { 1702 printf("%lx ", (unsigned long) a); 1703 return b ? 0 : 0; 1704 } 1705 1706 1707 1708 void 1709 PrintOnError(const char *s) 1710 { 1711 char tmp[64]; 1712 1713 if (s) 1714 printf("%s", s); 1715 1716 printf("\n%s: stopped in %s\n", progname, curdir); 1717 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1718 sizeof(tmp) - 1); 1719 s = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1720 if (s && *s) 1721 printf("%s", s); 1722 } 1723 1724 void 1725 Main_ExportMAKEFLAGS(Boolean first) 1726 { 1727 static int once = 1; 1728 char tmp[64]; 1729 char *s; 1730 1731 if (once != first) 1732 return; 1733 once = 0; 1734 1735 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1736 sizeof(tmp)); 1737 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1738 if (s && *s) { 1739 #ifdef POSIX 1740 setenv("MAKEFLAGS", s, 1); 1741 #else 1742 setenv("MAKE", s, 1); 1743 #endif 1744 } 1745 } 1746
Indexes created Wed Sep 24 05:09:52 GMT 2025