main.c revision 1.148
1 /* $NetBSD: main.c,v 1.148 2008/02/15 02:38:07 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 1.148 2008/02/15 02:38:07 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 1.148 2008/02/15 02:38:07 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 static int maxJobTokens; /* -j argument */ 160 Boolean compatMake; /* -B argument */ 161 int debug; /* -d argument */ 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 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 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 174 Boolean varNoExportEnv; /* -X flag */ 175 Boolean doing_depend; /* Set while reading .depend */ 176 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 177 static const char * tracefile; 178 static char * Check_Cwd_av(size_t, char **, int); 179 static void MainParseArgs(size_t, char **); 180 static int ReadMakefile(ClientData, ClientData); 181 static void usage(void); 182 183 static char curdir[MAXPATHLEN + 1]; /* startup directory */ 184 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 185 char *progname; /* the program name */ 186 187 Boolean forceJobs = FALSE; 188 189 extern Lst parseIncPath; 190 191 static void 192 parse_debug_options(const char *argvalue) 193 { 194 const char *modules; 195 const char *mode; 196 char *fname; 197 size_t len; 198 199 for (modules = argvalue; *modules; ++modules) { 200 switch (*modules) { 201 case 'A': 202 debug = ~0; 203 break; 204 case 'a': 205 debug |= DEBUG_ARCH; 206 break; 207 case 'c': 208 debug |= DEBUG_COND; 209 break; 210 case 'd': 211 debug |= DEBUG_DIR; 212 break; 213 case 'e': 214 debug |= DEBUG_ERROR; 215 break; 216 case 'f': 217 debug |= DEBUG_FOR; 218 break; 219 case 'g': 220 if (modules[1] == '1') { 221 debug |= DEBUG_GRAPH1; 222 ++modules; 223 } 224 else if (modules[1] == '2') { 225 debug |= DEBUG_GRAPH2; 226 ++modules; 227 } 228 else if (modules[1] == '3') { 229 debug |= DEBUG_GRAPH3; 230 ++modules; 231 } 232 break; 233 case 'j': 234 debug |= DEBUG_JOB; 235 break; 236 case 'l': 237 debug |= DEBUG_LOUD; 238 break; 239 case 'm': 240 debug |= DEBUG_MAKE; 241 break; 242 case 'n': 243 debug |= DEBUG_SCRIPT; 244 break; 245 case 'p': 246 debug |= DEBUG_PARSE; 247 break; 248 case 's': 249 debug |= DEBUG_SUFF; 250 break; 251 case 't': 252 debug |= DEBUG_TARG; 253 break; 254 case 'v': 255 debug |= DEBUG_VAR; 256 break; 257 case 'x': 258 debug |= DEBUG_SHELL; 259 break; 260 case 'F': 261 if (debug_file != stdout && debug_file != stderr) 262 fclose(debug_file); 263 if (*++modules == '+') 264 mode = "a"; 265 else { 266 if (!strcmp(modules, "stdout")) { 267 debug_file = stdout; 268 return; 269 } 270 if (!strcmp(modules, "stderr")) { 271 debug_file = stderr; 272 return; 273 } 274 mode = "w"; 275 } 276 len = strlen(modules); 277 fname = malloc(len + 20); 278 memcpy(fname, modules, len + 1); 279 /* Let the filename be modified by the pid */ 280 if (strcmp(fname + len - 3, ".%d") == 0) 281 snprintf(fname + len - 2, 20, "%ld", 282 (long)getpid()); 283 debug_file = fopen(fname, mode); 284 if (!debug_file) { 285 fprintf(stderr, "Cannot open debug file %s\n", 286 fname); 287 usage(); 288 } 289 free(fname); 290 /* Have this non-buffered */ 291 setbuf(debug_file, NULL); 292 return; 293 default: 294 (void)fprintf(stderr, 295 "%s: illegal argument to d option -- %c\n", 296 progname, *modules); 297 usage(); 298 } 299 } 300 } 301 302 /*- 303 * MainParseArgs -- 304 * Parse a given argument vector. Called from main() and from 305 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 306 * 307 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 308 * 309 * Results: 310 * None 311 * 312 * Side Effects: 313 * Various global and local flags will be set depending on the flags 314 * given 315 */ 316 static void 317 MainParseArgs(size_t argc, char **argv) 318 { 319 char *p; 320 int c = '?'; 321 int arginc; 322 char *argvalue; 323 const char *getopt_def; 324 char *optscan; 325 Boolean inOption, dashDash = FALSE; 326 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 327 328 #define OPTFLAGS "BD:I:J:NST:V:WXd:ef:ij:km:nqrst" 329 /* Can't actually use getopt(3) because rescanning is not portable */ 330 331 getopt_def = OPTFLAGS; 332 rearg: 333 inOption = FALSE; 334 optscan = NULL; 335 while(argc > 1) { 336 char *getopt_spec; 337 if(!inOption) 338 optscan = argv[1]; 339 c = *optscan++; 340 arginc = 0; 341 if(inOption) { 342 if(c == '\0') { 343 ++argv; 344 --argc; 345 inOption = FALSE; 346 continue; 347 } 348 } else { 349 if (c != '-' || dashDash) 350 break; 351 inOption = TRUE; 352 c = *optscan++; 353 } 354 /* '-' found at some earlier point */ 355 getopt_spec = strchr(getopt_def, c); 356 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 357 /* -<something> found, and <something> should have an arg */ 358 inOption = FALSE; 359 arginc = 1; 360 argvalue = optscan; 361 if(*argvalue == '\0') { 362 if (argc < 3) 363 goto noarg; 364 argvalue = argv[2]; 365 arginc = 2; 366 } 367 } else { 368 argvalue = NULL; 369 } 370 switch(c) { 371 case '\0': 372 arginc = 1; 373 inOption = FALSE; 374 break; 375 case 'B': 376 compatMake = TRUE; 377 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 378 break; 379 case 'D': 380 if (argvalue == NULL) goto noarg; 381 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 382 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 383 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 384 break; 385 case 'I': 386 if (argvalue == NULL) goto noarg; 387 Parse_AddIncludeDir(argvalue); 388 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 389 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 390 break; 391 case 'J': 392 if (argvalue == NULL) goto noarg; 393 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 394 (void)fprintf(stderr, 395 "%s: internal error -- J option malformed (%s)\n", 396 progname, argvalue); 397 usage(); 398 } 399 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 400 (fcntl(jp_1, F_GETFD, 0) < 0)) { 401 #if 0 402 (void)fprintf(stderr, 403 "%s: ###### warning -- J descriptors were closed!\n", 404 progname); 405 exit(2); 406 #endif 407 jp_0 = -1; 408 jp_1 = -1; 409 compatMake = TRUE; 410 } else { 411 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 412 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 413 jobServer = TRUE; 414 } 415 break; 416 case 'N': 417 noExecute = TRUE; 418 noRecursiveExecute = TRUE; 419 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 420 break; 421 case 'S': 422 keepgoing = FALSE; 423 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 424 break; 425 case 'T': 426 if (argvalue == NULL) goto noarg; 427 tracefile = estrdup(argvalue); 428 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 429 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 430 break; 431 case 'V': 432 if (argvalue == NULL) goto noarg; 433 printVars = TRUE; 434 (void)Lst_AtEnd(variables, argvalue); 435 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 436 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 437 break; 438 case 'W': 439 parseWarnFatal = TRUE; 440 break; 441 case 'X': 442 varNoExportEnv = TRUE; 443 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 444 break; 445 case 'd': 446 if (argvalue == NULL) goto noarg; 447 /* If '-d-opts' don't pass to children */ 448 if (argvalue[0] == '-') 449 argvalue++; 450 else { 451 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 452 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 453 } 454 parse_debug_options(argvalue); 455 break; 456 case 'e': 457 checkEnvFirst = TRUE; 458 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 459 break; 460 case 'f': 461 if (argvalue == NULL) goto noarg; 462 (void)Lst_AtEnd(makefiles, argvalue); 463 break; 464 case 'i': 465 ignoreErrors = TRUE; 466 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 467 break; 468 case 'j': 469 if (argvalue == NULL) goto noarg; 470 forceJobs = TRUE; 471 maxJobs = strtol(argvalue, &p, 0); 472 if (*p != '\0' || maxJobs < 1) { 473 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 474 progname); 475 exit(1); 476 } 477 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 478 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 479 maxJobTokens = maxJobs; 480 break; 481 case 'k': 482 keepgoing = TRUE; 483 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 484 break; 485 case 'm': 486 if (argvalue == NULL) goto noarg; 487 /* look for magic parent directory search string */ 488 if (strncmp(".../", argvalue, 4) == 0) { 489 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 490 found_path, sizeof(found_path))) 491 break; /* nothing doing */ 492 (void)Dir_AddDir(sysIncPath, found_path); 493 494 } else { 495 (void)Dir_AddDir(sysIncPath, argvalue); 496 } 497 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 498 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 499 break; 500 case 'n': 501 noExecute = TRUE; 502 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 503 break; 504 case 'q': 505 queryFlag = TRUE; 506 /* Kind of nonsensical, wot? */ 507 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 508 break; 509 case 'r': 510 noBuiltins = TRUE; 511 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 512 break; 513 case 's': 514 beSilent = TRUE; 515 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 516 break; 517 case 't': 518 touchFlag = TRUE; 519 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 520 break; 521 case '-': 522 dashDash = TRUE; 523 break; 524 default: 525 case '?': 526 usage(); 527 } 528 argv += arginc; 529 argc -= arginc; 530 } 531 532 oldVars = TRUE; 533 534 /* 535 * See if the rest of the arguments are variable assignments and 536 * perform them if so. Else take them to be targets and stuff them 537 * on the end of the "create" list. 538 */ 539 for (; argc > 1; ++argv, --argc) 540 if (Parse_IsVar(argv[1])) { 541 Parse_DoVar(argv[1], VAR_CMD); 542 } else { 543 if (!*argv[1]) 544 Punt("illegal (null) argument."); 545 if (*argv[1] == '-' && !dashDash) 546 goto rearg; 547 (void)Lst_AtEnd(create, estrdup(argv[1])); 548 } 549 550 return; 551 noarg: 552 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 553 progname, c); 554 usage(); 555 } 556 557 /*- 558 * Main_ParseArgLine -- 559 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 560 * is encountered and by main() when reading the .MAKEFLAGS envariable. 561 * Takes a line of arguments and breaks it into its 562 * component words and passes those words and the number of them to the 563 * MainParseArgs function. 564 * The line should have all its leading whitespace removed. 565 * 566 * Input: 567 * line Line to fracture 568 * 569 * Results: 570 * None 571 * 572 * Side Effects: 573 * Only those that come from the various arguments. 574 */ 575 void 576 Main_ParseArgLine(char *line) 577 { 578 char **argv; /* Manufactured argument vector */ 579 size_t argc; /* Number of arguments in argv */ 580 char *args; /* Space used by the args */ 581 char *buf, *p1; 582 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 583 size_t len; 584 585 if (line == NULL) 586 return; 587 for (; *line == ' '; ++line) 588 continue; 589 if (!*line) 590 return; 591 592 buf = emalloc(len = strlen(line) + strlen(argv0) + 2); 593 (void)snprintf(buf, len, "%s %s", argv0, line); 594 if (p1) 595 free(p1); 596 597 argv = brk_string(buf, &argc, TRUE, &args); 598 free(buf); 599 MainParseArgs(argc, argv); 600 601 free(args); 602 free(argv); 603 } 604 605 Boolean 606 Main_SetObjdir(const char *path) 607 { 608 struct stat sb; 609 char *p = NULL; 610 char buf[MAXPATHLEN + 1]; 611 Boolean rc = FALSE; 612 613 /* expand variable substitutions */ 614 if (strchr(path, '$') != 0) { 615 snprintf(buf, MAXPATHLEN, "%s", path); 616 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 617 } 618 619 if (path[0] != '/') { 620 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 621 path = buf; 622 } 623 624 /* look for the directory and try to chdir there */ 625 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 626 if (chdir(path)) { 627 (void)fprintf(stderr, "make warning: %s: %s.\n", 628 path, strerror(errno)); 629 } else { 630 strncpy(objdir, path, MAXPATHLEN); 631 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 632 setenv("PWD", objdir, 1); 633 Dir_InitDot(); 634 rc = TRUE; 635 } 636 } 637 638 if (p) 639 free(p); 640 return rc; 641 } 642 643 /*- 644 * ReadAllMakefiles -- 645 * wrapper around ReadMakefile() to read all. 646 * 647 * Results: 648 * TRUE if ok, FALSE on error 649 */ 650 static int 651 ReadAllMakefiles(ClientData p, ClientData q) 652 { 653 return (ReadMakefile(p, q) == 0); 654 } 655 656 /*- 657 * main -- 658 * The main function, for obvious reasons. Initializes variables 659 * and a few modules, then parses the arguments give it in the 660 * environment and on the command line. Reads the system makefile 661 * followed by either Makefile, makefile or the file given by the 662 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 663 * flags it has received by then uses either the Make or the Compat 664 * module to create the initial list of targets. 665 * 666 * Results: 667 * If -q was given, exits -1 if anything was out-of-date. Else it exits 668 * 0. 669 * 670 * Side Effects: 671 * The program exits when done. Targets are created. etc. etc. etc. 672 */ 673 int 674 main(int argc, char **argv) 675 { 676 Lst targs; /* target nodes to create -- passed to Make_Init */ 677 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 678 struct stat sb, sa; 679 char *p1, *path, *pwd; 680 char mdpath[MAXPATHLEN]; 681 char *machine = getenv("MACHINE"); 682 const char *machine_arch = getenv("MACHINE_ARCH"); 683 char *syspath = getenv("MAKESYSPATH"); 684 Lst sysMkPath; /* Path of sys.mk */ 685 char *cp = NULL, *start; 686 /* avoid faults on read-only strings */ 687 static char defsyspath[] = _PATH_DEFSYSPATH; 688 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 689 struct timeval rightnow; /* to initialize random seed */ 690 #ifdef MAKE_NATIVE 691 struct utsname utsname; 692 #endif 693 694 /* default to writing debug to stdout */ 695 debug_file = stdout; 696 697 /* 698 * Set the seed to produce a different random sequences 699 * on each program execution. 700 */ 701 gettimeofday(&rightnow, NULL); 702 srandom((unsigned long)rightnow.tv_sec + rightnow.tv_usec); 703 704 if ((progname = strrchr(argv[0], '/')) != NULL) 705 progname++; 706 else 707 progname = argv[0]; 708 #ifdef RLIMIT_NOFILE 709 /* 710 * get rid of resource limit on file descriptors 711 */ 712 { 713 struct rlimit rl; 714 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 715 rl.rlim_cur != rl.rlim_max) { 716 rl.rlim_cur = rl.rlim_max; 717 (void)setrlimit(RLIMIT_NOFILE, &rl); 718 } 719 } 720 #endif 721 /* 722 * Find where we are and take care of PWD for the automounter... 723 * All this code is so that we know where we are when we start up 724 * on a different machine with pmake. 725 */ 726 if (getcwd(curdir, MAXPATHLEN) == NULL) { 727 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 728 exit(2); 729 } 730 731 if (stat(curdir, &sa) == -1) { 732 (void)fprintf(stderr, "%s: %s: %s.\n", 733 progname, curdir, strerror(errno)); 734 exit(2); 735 } 736 737 /* 738 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 739 * since the value of curdir can very depending on how we got 740 * here. Ie sitting at a shell prompt (shell that provides $PWD) 741 * or via subdir.mk in which case its likely a shell which does 742 * not provide it. 743 * So, to stop it breaking this case only, we ignore PWD if 744 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 745 */ 746 if ((pwd = getenv("PWD")) != NULL && getenv("MAKEOBJDIRPREFIX") == NULL) { 747 const char *makeobjdir = getenv("MAKEOBJDIR"); 748 749 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 750 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 751 sa.st_dev == sb.st_dev) 752 (void)strncpy(curdir, pwd, MAXPATHLEN); 753 } 754 } 755 756 /* 757 * Get the name of this type of MACHINE from utsname 758 * so we can share an executable for similar machines. 759 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 760 * 761 * Note that both MACHINE and MACHINE_ARCH are decided at 762 * run-time. 763 */ 764 if (!machine) { 765 #ifdef MAKE_NATIVE 766 if (uname(&utsname) == -1) { 767 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 768 strerror(errno)); 769 exit(2); 770 } 771 machine = utsname.machine; 772 #else 773 #ifdef MAKE_MACHINE 774 machine = MAKE_MACHINE; 775 #else 776 machine = "unknown"; 777 #endif 778 #endif 779 } 780 781 if (!machine_arch) { 782 #ifndef MACHINE_ARCH 783 #ifdef MAKE_MACHINE_ARCH 784 machine_arch = MAKE_MACHINE_ARCH; 785 #else 786 machine_arch = "unknown"; 787 #endif 788 #else 789 machine_arch = MACHINE_ARCH; 790 #endif 791 } 792 793 /* 794 * Just in case MAKEOBJDIR wants us to do something tricky. 795 */ 796 Var_Init(); /* Initialize the lists of variables for 797 * parsing arguments */ 798 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 799 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 800 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 801 #ifdef MAKE_VERSION 802 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 803 #endif 804 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 805 806 /* 807 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 808 * MAKEOBJDIR is set in the environment, try only that value 809 * and fall back to .CURDIR if it does not exist. 810 * 811 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 812 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 813 * of these paths exist, just use .CURDIR. 814 */ 815 Dir_Init(curdir); 816 (void)Main_SetObjdir(curdir); 817 818 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 819 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 820 (void)Main_SetObjdir(mdpath); 821 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 822 (void)Main_SetObjdir(path); 823 } else { 824 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 825 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 826 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 827 _PATH_OBJDIRPREFIX, curdir); 828 (void)Main_SetObjdir(mdpath); 829 } 830 } 831 832 create = Lst_Init(FALSE); 833 makefiles = Lst_Init(FALSE); 834 printVars = FALSE; 835 variables = Lst_Init(FALSE); 836 beSilent = FALSE; /* Print commands as executed */ 837 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 838 noExecute = FALSE; /* Execute all commands */ 839 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 840 keepgoing = FALSE; /* Stop on error */ 841 allPrecious = FALSE; /* Remove targets when interrupted */ 842 queryFlag = FALSE; /* This is not just a check-run */ 843 noBuiltins = FALSE; /* Read the built-in rules */ 844 touchFlag = FALSE; /* Actually update targets */ 845 debug = 0; /* No debug verbosity, please. */ 846 jobsRunning = FALSE; 847 848 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 849 maxJobTokens = maxJobs; 850 compatMake = FALSE; /* No compat mode */ 851 852 853 /* 854 * Initialize the parsing, directory and variable modules to prepare 855 * for the reading of inclusion paths and variable settings on the 856 * command line 857 */ 858 859 /* 860 * Initialize various variables. 861 * MAKE also gets this name, for compatibility 862 * .MAKEFLAGS gets set to the empty string just in case. 863 * MFLAGS also gets initialized empty, for compatibility. 864 */ 865 Parse_Init(); 866 Var_Set("MAKE", argv[0], VAR_GLOBAL, 0); 867 Var_Set(".MAKE", argv[0], VAR_GLOBAL, 0); 868 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 869 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 870 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 871 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 872 873 /* 874 * Set some other useful macros 875 */ 876 { 877 char tmp[64]; 878 879 snprintf(tmp, sizeof(tmp), "%ld", (long)getpid()); 880 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 881 snprintf(tmp, sizeof(tmp), "%ld", (long)getppid()); 882 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 883 } 884 Job_SetPrefix(); 885 886 /* 887 * First snag any flags out of the MAKE environment variable. 888 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 889 * in a different format). 890 */ 891 #ifdef POSIX 892 Main_ParseArgLine(getenv("MAKEFLAGS")); 893 #else 894 Main_ParseArgLine(getenv("MAKE")); 895 #endif 896 897 MainParseArgs((size_t)argc, argv); 898 899 /* 900 * Be compatible if user did not specify -j and did not explicitly 901 * turned compatibility on 902 */ 903 if (!compatMake && !forceJobs) { 904 compatMake = TRUE; 905 } 906 907 /* 908 * Initialize archive, target and suffix modules in preparation for 909 * parsing the makefile(s) 910 */ 911 Arch_Init(); 912 Targ_Init(); 913 Suff_Init(); 914 Trace_Init(tracefile); 915 916 DEFAULT = NILGNODE; 917 (void)time(&now); 918 919 Trace_Log(MAKESTART, NULL); 920 921 /* 922 * Set up the .TARGETS variable to contain the list of targets to be 923 * created. If none specified, make the variable empty -- the parser 924 * will fill the thing in with the default or .MAIN target. 925 */ 926 if (!Lst_IsEmpty(create)) { 927 LstNode ln; 928 929 for (ln = Lst_First(create); ln != NILLNODE; 930 ln = Lst_Succ(ln)) { 931 char *name = (char *)Lst_Datum(ln); 932 933 Var_Append(".TARGETS", name, VAR_GLOBAL); 934 } 935 } else 936 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 937 938 939 /* 940 * If no user-supplied system path was given (through the -m option) 941 * add the directories from the DEFSYSPATH (more than one may be given 942 * as dir1:...:dirn) to the system include path. 943 */ 944 if (syspath == NULL || *syspath == '\0') 945 syspath = defsyspath; 946 else 947 syspath = estrdup(syspath); 948 949 for (start = syspath; *start != '\0'; start = cp) { 950 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 951 continue; 952 if (*cp == ':') { 953 *cp++ = '\0'; 954 } 955 /* look for magic parent directory search string */ 956 if (strncmp(".../", start, 4) != 0) { 957 (void)Dir_AddDir(defIncPath, start); 958 } else { 959 if (Dir_FindHereOrAbove(curdir, start+4, 960 found_path, sizeof(found_path))) { 961 (void)Dir_AddDir(defIncPath, found_path); 962 } 963 } 964 } 965 if (syspath != defsyspath) 966 free(syspath); 967 968 /* 969 * Read in the built-in rules first, followed by the specified 970 * makefile, if it was (makefile != NULL), or the default 971 * makefile and Makefile, in that order, if it wasn't. 972 */ 973 if (!noBuiltins) { 974 LstNode ln; 975 976 sysMkPath = Lst_Init(FALSE); 977 Dir_Expand(_PATH_DEFSYSMK, 978 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 979 sysMkPath); 980 if (Lst_IsEmpty(sysMkPath)) 981 Fatal("%s: no system rules (%s).", progname, 982 _PATH_DEFSYSMK); 983 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 984 if (ln == NILLNODE) 985 Fatal("%s: cannot open %s.", progname, 986 (char *)Lst_Datum(ln)); 987 } 988 989 if (!Lst_IsEmpty(makefiles)) { 990 LstNode ln; 991 992 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 993 if (ln != NILLNODE) 994 Fatal("%s: cannot open %s.", progname, 995 (char *)Lst_Datum(ln)); 996 } else if (ReadMakefile(UNCONST("makefile"), NULL) != 0) 997 (void)ReadMakefile(UNCONST("Makefile"), NULL); 998 999 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1000 if (!noBuiltins || !printVars) { 1001 doing_depend = TRUE; 1002 (void)ReadMakefile(UNCONST(".depend"), NULL); 1003 doing_depend = FALSE; 1004 } 1005 1006 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1007 if (p1) 1008 free(p1); 1009 1010 if (!compatMake) 1011 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1012 if (DEBUG(JOB)) 1013 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1014 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1015 1016 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1017 1018 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1019 1020 1021 /* 1022 * For compatibility, look at the directories in the VPATH variable 1023 * and add them to the search path, if the variable is defined. The 1024 * variable's value is in the same format as the PATH envariable, i.e. 1025 * <directory>:<directory>:<directory>... 1026 */ 1027 if (Var_Exists("VPATH", VAR_CMD)) { 1028 char *vpath, savec; 1029 /* 1030 * GCC stores string constants in read-only memory, but 1031 * Var_Subst will want to write this thing, so store it 1032 * in an array 1033 */ 1034 static char VPATH[] = "${VPATH}"; 1035 1036 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1037 path = vpath; 1038 do { 1039 /* skip to end of directory */ 1040 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1041 continue; 1042 /* Save terminator character so know when to stop */ 1043 savec = *cp; 1044 *cp = '\0'; 1045 /* Add directory to search path */ 1046 (void)Dir_AddDir(dirSearchPath, path); 1047 *cp = savec; 1048 path = cp + 1; 1049 } while (savec == ':'); 1050 free(vpath); 1051 } 1052 1053 /* 1054 * Now that all search paths have been read for suffixes et al, it's 1055 * time to add the default search path to their lists... 1056 */ 1057 Suff_DoPaths(); 1058 1059 /* 1060 * Propagate attributes through :: dependency lists. 1061 */ 1062 Targ_Propagate(); 1063 1064 /* print the initial graph, if the user requested it */ 1065 if (DEBUG(GRAPH1)) 1066 Targ_PrintGraph(1); 1067 1068 /* print the values of any variables requested by the user */ 1069 if (printVars) { 1070 LstNode ln; 1071 1072 for (ln = Lst_First(variables); ln != NILLNODE; 1073 ln = Lst_Succ(ln)) { 1074 char *var = (char *)Lst_Datum(ln); 1075 char *value; 1076 1077 if (strchr(var, '$')) { 1078 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1079 } else { 1080 value = Var_Value(var, VAR_GLOBAL, &p1); 1081 } 1082 printf("%s\n", value ? value : ""); 1083 if (p1) 1084 free(p1); 1085 } 1086 } else { 1087 /* 1088 * Have now read the entire graph and need to make a list of 1089 * targets to create. If none was given on the command line, 1090 * we consult the parsing module to find the main target(s) 1091 * to create. 1092 */ 1093 if (Lst_IsEmpty(create)) 1094 targs = Parse_MainName(); 1095 else 1096 targs = Targ_FindList(create, TARG_CREATE); 1097 1098 if (!compatMake) { 1099 /* 1100 * Initialize job module before traversing the graph 1101 * now that any .BEGIN and .END targets have been read. 1102 * This is done only if the -q flag wasn't given 1103 * (to prevent the .BEGIN from being executed should 1104 * it exist). 1105 */ 1106 if (!queryFlag) { 1107 Job_Init(); 1108 jobsRunning = TRUE; 1109 } 1110 1111 /* Traverse the graph, checking on all the targets */ 1112 outOfDate = Make_Run(targs); 1113 } else { 1114 /* 1115 * Compat_Init will take care of creating all the 1116 * targets as well as initializing the module. 1117 */ 1118 Compat_Run(targs); 1119 } 1120 } 1121 1122 #ifdef CLEANUP 1123 Lst_Destroy(targs, NOFREE); 1124 Lst_Destroy(variables, NOFREE); 1125 Lst_Destroy(makefiles, NOFREE); 1126 Lst_Destroy(create, (FreeProc *)free); 1127 #endif 1128 1129 /* print the graph now it's been processed if the user requested it */ 1130 if (DEBUG(GRAPH2)) 1131 Targ_PrintGraph(2); 1132 1133 Trace_Log(MAKEEND, 0); 1134 1135 Suff_End(); 1136 Targ_End(); 1137 Arch_End(); 1138 Var_End(); 1139 Parse_End(); 1140 Dir_End(); 1141 Job_End(); 1142 Trace_End(); 1143 1144 return outOfDate ? 1 : 0; 1145 } 1146 1147 /*- 1148 * ReadMakefile -- 1149 * Open and parse the given makefile. 1150 * 1151 * Results: 1152 * 0 if ok. -1 if couldn't open file. 1153 * 1154 * Side Effects: 1155 * lots 1156 */ 1157 static int 1158 /*ARGSUSED*/ 1159 ReadMakefile(ClientData p, ClientData q __unused) 1160 { 1161 char *fname = p; /* makefile to read */ 1162 int fd; 1163 size_t len = MAXPATHLEN; 1164 char *name, *path = emalloc(len); 1165 int setMAKEFILE; 1166 1167 if (!strcmp(fname, "-")) { 1168 Parse_File("(stdin)", dup(fileno(stdin))); 1169 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1170 } else { 1171 setMAKEFILE = strcmp(fname, ".depend"); 1172 1173 /* if we've chdir'd, rebuild the path name */ 1174 if (strcmp(curdir, objdir) && *fname != '/') { 1175 size_t plen = strlen(curdir) + strlen(fname) + 2; 1176 if (len < plen) 1177 path = erealloc(path, len = 2 * plen); 1178 1179 (void)snprintf(path, len, "%s/%s", curdir, fname); 1180 fd = open(path, O_RDONLY); 1181 if (fd != -1) { 1182 fname = path; 1183 goto found; 1184 } 1185 1186 /* If curdir failed, try objdir (ala .depend) */ 1187 plen = strlen(objdir) + strlen(fname) + 2; 1188 if (len < plen) 1189 path = erealloc(path, len = 2 * plen); 1190 (void)snprintf(path, len, "%s/%s", objdir, fname); 1191 fd = open(path, O_RDONLY); 1192 if (fd != -1) { 1193 fname = path; 1194 goto found; 1195 } 1196 } else { 1197 fd = open(fname, O_RDONLY); 1198 if (fd != -1) 1199 goto found; 1200 } 1201 /* look in -I and system include directories. */ 1202 name = Dir_FindFile(fname, parseIncPath); 1203 if (!name) 1204 name = Dir_FindFile(fname, 1205 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1206 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1207 if (name) 1208 free(name); 1209 free(path); 1210 return(-1); 1211 } 1212 fname = name; 1213 /* 1214 * set the MAKEFILE variable desired by System V fans -- the 1215 * placement of the setting here means it gets set to the last 1216 * makefile specified, as it is set by SysV make. 1217 */ 1218 found: 1219 if (setMAKEFILE) 1220 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1221 Parse_File(fname, fd); 1222 } 1223 free(path); 1224 return(0); 1225 } 1226 1227 1228 /* 1229 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1230 * in situations that would not arrise with ./obj (links or not). 1231 * This tends to break things like: 1232 * 1233 * build: 1234 * ${MAKE} includes 1235 * 1236 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1237 * opposed to an argument) in a command line and if so returns 1238 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1239 * the Makefile hold true. 1240 * 1241 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1242 * 1243 * The chdir() only happens in the child process, and does nothing if 1244 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1245 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1246 * do nothing - to ensure historic semantics can be retained. 1247 */ 1248 static int Check_Cwd_Off = 0; 1249 1250 static char * 1251 Check_Cwd_av(size_t ac, char **av, int copy) 1252 { 1253 static char *make[4]; 1254 static char *cur_dir = NULL; 1255 char **mp; 1256 char *cp; 1257 int is_cmd, next_cmd; 1258 int i; 1259 int n; 1260 1261 if (Check_Cwd_Off) 1262 return NULL; 1263 1264 if (make[0] == NULL) { 1265 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1266 Check_Cwd_Off = 1; 1267 return NULL; 1268 } 1269 1270 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1271 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1272 make[0] = make[1]; 1273 make[1] = NULL; 1274 } else 1275 ++make[0]; 1276 make[2] = NULL; 1277 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1278 } 1279 if (ac == 0 || av == NULL) 1280 return NULL; /* initialization only */ 1281 1282 if (getenv("MAKEOBJDIR") == NULL && 1283 getenv("MAKEOBJDIRPREFIX") == NULL) 1284 return NULL; 1285 1286 1287 next_cmd = 1; 1288 for (i = 0; i < ac; ++i) { 1289 is_cmd = next_cmd; 1290 1291 n = strlen(av[i]); 1292 cp = &(av[i])[n - 1]; 1293 if (strspn(av[i], "|&;") == (size_t)n) { 1294 next_cmd = 1; 1295 continue; 1296 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1297 next_cmd = 1; 1298 if (copy) { 1299 do { 1300 *cp-- = '\0'; 1301 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1302 *cp == ')' || *cp == '}') ; 1303 } else { 1304 /* 1305 * XXX this should not happen. 1306 */ 1307 fprintf(stderr, "WARNING: raw arg ends in shell meta '%s'\n", 1308 av[i]); 1309 } 1310 } else 1311 next_cmd = 0; 1312 1313 cp = av[i]; 1314 if (*cp == ';' || *cp == '&' || *cp == '|') 1315 is_cmd = 1; 1316 1317 #ifdef check_cwd_debug 1318 fprintf(stderr, "av[%d] == %s '%s'", 1319 i, (is_cmd) ? "cmd" : "arg", av[i]); 1320 #endif 1321 if (is_cmd != 0) { 1322 if (*cp == '(' || *cp == '{' || 1323 *cp == ';' || *cp == '&' || *cp == '|') { 1324 do { 1325 ++cp; 1326 } while (*cp == '(' || *cp == '{' || 1327 *cp == ';' || *cp == '&' || *cp == '|'); 1328 if (*cp == '\0') { 1329 next_cmd = 1; 1330 continue; 1331 } 1332 } 1333 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1334 #ifdef check_cwd_debug 1335 fprintf(stderr, " == cd, done.\n"); 1336 #endif 1337 return NULL; 1338 } 1339 for (mp = make; *mp != NULL; ++mp) { 1340 n = strlen(*mp); 1341 if (strcmp(cp, *mp) == 0) { 1342 #ifdef check_cwd_debug 1343 fprintf(stderr, " %s == '%s', chdir(%s)\n", 1344 cp, *mp, cur_dir); 1345 #endif 1346 return cur_dir; 1347 } 1348 } 1349 } 1350 #ifdef check_cwd_debug 1351 fprintf(stderr, "\n"); 1352 #endif 1353 } 1354 return NULL; 1355 } 1356 1357 char * 1358 Check_Cwd_Cmd(const char *cmd) 1359 { 1360 char *cp, *bp; 1361 char **av; 1362 size_t ac; 1363 1364 if (Check_Cwd_Off) 1365 return NULL; 1366 1367 if (cmd) { 1368 av = brk_string(cmd, &ac, TRUE, &bp); 1369 #ifdef check_cwd_debug 1370 fprintf(stderr, "splitting: '%s' -> %d words\n", 1371 cmd, ac); 1372 #endif 1373 } else { 1374 ac = 0; 1375 av = NULL; 1376 bp = NULL; 1377 } 1378 cp = Check_Cwd_av(ac, av, 1); 1379 if (bp) 1380 free(bp); 1381 if (av) 1382 free(av); 1383 return cp; 1384 } 1385 1386 void 1387 Check_Cwd(const char **argv) 1388 { 1389 char *cp; 1390 size_t ac; 1391 1392 if (Check_Cwd_Off) 1393 return; 1394 1395 for (ac = 0; argv[ac] != NULL; ++ac) 1396 /* NOTHING */; 1397 if (ac == 3 && *argv[1] == '-') { 1398 cp = Check_Cwd_Cmd(argv[2]); 1399 } else { 1400 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1401 } 1402 if (cp) { 1403 chdir(cp); 1404 } 1405 } 1406 1407 /*- 1408 * Cmd_Exec -- 1409 * Execute the command in cmd, and return the output of that command 1410 * in a string. 1411 * 1412 * Results: 1413 * A string containing the output of the command, or the empty string 1414 * If errnum is not NULL, it contains the reason for the command failure 1415 * 1416 * Side Effects: 1417 * The string must be freed by the caller. 1418 */ 1419 char * 1420 Cmd_Exec(const char *cmd, const char **errnum) 1421 { 1422 const char *args[4]; /* Args for invoking the shell */ 1423 int fds[2]; /* Pipe streams */ 1424 pid_t cpid; /* Child PID */ 1425 pid_t pid; /* PID from wait() */ 1426 char *res; /* result */ 1427 int status; /* command exit status */ 1428 Buffer buf; /* buffer to store the result */ 1429 char *cp; 1430 ssize_t cc; 1431 size_t len; 1432 1433 1434 *errnum = NULL; 1435 1436 if (!shellName) 1437 Shell_Init(); 1438 /* 1439 * Set up arguments for shell 1440 */ 1441 args[0] = shellName; 1442 args[1] = "-c"; 1443 args[2] = cmd; 1444 args[3] = NULL; 1445 1446 /* 1447 * Open a pipe for fetching its output 1448 */ 1449 if (pipe(fds) == -1) { 1450 *errnum = "Couldn't create pipe for \"%s\""; 1451 goto bad; 1452 } 1453 1454 /* 1455 * Fork 1456 */ 1457 switch (cpid = vfork()) { 1458 case 0: 1459 /* 1460 * Close input side of pipe 1461 */ 1462 (void)close(fds[0]); 1463 1464 /* 1465 * Duplicate the output stream to the shell's output, then 1466 * shut the extra thing down. Note we don't fetch the error 1467 * stream...why not? Why? 1468 */ 1469 (void)dup2(fds[1], 1); 1470 (void)close(fds[1]); 1471 1472 Var_ExportVars(); 1473 1474 (void)execv(shellPath, UNCONST(args)); 1475 _exit(1); 1476 /*NOTREACHED*/ 1477 1478 case -1: 1479 *errnum = "Couldn't exec \"%s\""; 1480 goto bad; 1481 1482 default: 1483 /* 1484 * No need for the writing half 1485 */ 1486 (void)close(fds[1]); 1487 1488 buf = Buf_Init(0); 1489 1490 do { 1491 char result[BUFSIZ]; 1492 cc = read(fds[0], result, sizeof(result)); 1493 if (cc > 0) 1494 Buf_AddBytes(buf, (size_t)cc, (Byte *)result); 1495 } 1496 while (cc > 0 || (cc == -1 && errno == EINTR)); 1497 1498 /* 1499 * Close the input side of the pipe. 1500 */ 1501 (void)close(fds[0]); 1502 1503 /* 1504 * Wait for the process to exit. 1505 */ 1506 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) 1507 continue; 1508 1509 res = (char *)Buf_GetAll(buf, &len); 1510 Buf_Destroy(buf, FALSE); 1511 1512 if (len == 0) 1513 *errnum = "Couldn't read shell's output for \"%s\""; 1514 1515 if (status) 1516 *errnum = "\"%s\" returned non-zero status"; 1517 1518 /* 1519 * Null-terminate the result, convert newlines to spaces and 1520 * install it in the variable. 1521 */ 1522 res[len] = '\0'; 1523 cp = &res[len]; 1524 1525 if (len > 0 && *--cp == '\n') { 1526 /* 1527 * A final newline is just stripped 1528 */ 1529 *cp-- = '\0'; 1530 } 1531 while (cp >= res) { 1532 if (*cp == '\n') { 1533 *cp = ' '; 1534 } 1535 cp--; 1536 } 1537 break; 1538 } 1539 return res; 1540 bad: 1541 res = emalloc(1); 1542 *res = '\0'; 1543 return res; 1544 } 1545 1546 /*- 1547 * Error -- 1548 * Print an error message given its format. 1549 * 1550 * Results: 1551 * None. 1552 * 1553 * Side Effects: 1554 * The message is printed. 1555 */ 1556 /* VARARGS */ 1557 void 1558 Error(const char *fmt, ...) 1559 { 1560 va_list ap; 1561 1562 va_start(ap, fmt); 1563 fprintf(stderr, "%s: ", progname); 1564 (void)vfprintf(stderr, fmt, ap); 1565 va_end(ap); 1566 (void)fprintf(stderr, "\n"); 1567 (void)fflush(stderr); 1568 } 1569 1570 /*- 1571 * Fatal -- 1572 * Produce a Fatal error message. If jobs are running, waits for them 1573 * to finish. 1574 * 1575 * Results: 1576 * None 1577 * 1578 * Side Effects: 1579 * The program exits 1580 */ 1581 /* VARARGS */ 1582 void 1583 Fatal(const char *fmt, ...) 1584 { 1585 va_list ap; 1586 1587 va_start(ap, fmt); 1588 if (jobsRunning) 1589 Job_Wait(); 1590 1591 (void)vfprintf(stderr, fmt, ap); 1592 va_end(ap); 1593 (void)fprintf(stderr, "\n"); 1594 (void)fflush(stderr); 1595 1596 PrintOnError(NULL); 1597 1598 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1599 Targ_PrintGraph(2); 1600 Trace_Log(MAKEERROR, 0); 1601 exit(2); /* Not 1 so -q can distinguish error */ 1602 } 1603 1604 /* 1605 * Punt -- 1606 * Major exception once jobs are being created. Kills all jobs, prints 1607 * a message and exits. 1608 * 1609 * Results: 1610 * None 1611 * 1612 * Side Effects: 1613 * All children are killed indiscriminately and the program Lib_Exits 1614 */ 1615 /* VARARGS */ 1616 void 1617 Punt(const char *fmt, ...) 1618 { 1619 va_list ap; 1620 1621 va_start(ap, fmt); 1622 (void)fprintf(stderr, "%s: ", progname); 1623 (void)vfprintf(stderr, fmt, ap); 1624 va_end(ap); 1625 (void)fprintf(stderr, "\n"); 1626 (void)fflush(stderr); 1627 1628 PrintOnError(NULL); 1629 1630 DieHorribly(); 1631 } 1632 1633 /*- 1634 * DieHorribly -- 1635 * Exit without giving a message. 1636 * 1637 * Results: 1638 * None 1639 * 1640 * Side Effects: 1641 * A big one... 1642 */ 1643 void 1644 DieHorribly(void) 1645 { 1646 if (jobsRunning) 1647 Job_AbortAll(); 1648 if (DEBUG(GRAPH2)) 1649 Targ_PrintGraph(2); 1650 Trace_Log(MAKEERROR, 0); 1651 exit(2); /* Not 1, so -q can distinguish error */ 1652 } 1653 1654 /* 1655 * Finish -- 1656 * Called when aborting due to errors in child shell to signal 1657 * abnormal exit. 1658 * 1659 * Results: 1660 * None 1661 * 1662 * Side Effects: 1663 * The program exits 1664 */ 1665 void 1666 Finish(int errors) 1667 /* number of errors encountered in Make_Make */ 1668 { 1669 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1670 } 1671 1672 #ifndef HAVE_EMALLOC 1673 /* 1674 * emalloc -- 1675 * malloc, but die on error. 1676 */ 1677 void * 1678 emalloc(size_t len) 1679 { 1680 void *p; 1681 1682 if ((p = malloc(len)) == NULL) 1683 enomem(); 1684 return(p); 1685 } 1686 1687 /* 1688 * estrdup -- 1689 * strdup, but die on error. 1690 */ 1691 char * 1692 estrdup(const char *str) 1693 { 1694 char *p; 1695 1696 if ((p = strdup(str)) == NULL) 1697 enomem(); 1698 return(p); 1699 } 1700 1701 /* 1702 * estrndup -- 1703 * strndup, but die on error. 1704 */ 1705 char * 1706 estrndup(const char *str, size_t len) 1707 { 1708 char *p; 1709 1710 if ((p = strndup(str, len)) == NULL) 1711 enomem(); 1712 return(p); 1713 } 1714 1715 /* 1716 * erealloc -- 1717 * realloc, but die on error. 1718 */ 1719 void * 1720 erealloc(void *ptr, size_t size) 1721 { 1722 if ((ptr = realloc(ptr, size)) == NULL) 1723 enomem(); 1724 return(ptr); 1725 } 1726 1727 /* 1728 * enomem -- 1729 * die when out of memory. 1730 */ 1731 void 1732 enomem(void) 1733 { 1734 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 1735 exit(2); 1736 } 1737 #endif 1738 1739 /* 1740 * enunlink -- 1741 * Remove a file carefully, avoiding directories. 1742 */ 1743 int 1744 eunlink(const char *file) 1745 { 1746 struct stat st; 1747 1748 if (lstat(file, &st) == -1) 1749 return -1; 1750 1751 if (S_ISDIR(st.st_mode)) { 1752 errno = EISDIR; 1753 return -1; 1754 } 1755 return unlink(file); 1756 } 1757 1758 /* 1759 * execError -- 1760 * Print why exec failed, avoiding stdio. 1761 */ 1762 void 1763 execError(const char *af, const char *av) 1764 { 1765 #ifdef USE_IOVEC 1766 int i = 0; 1767 struct iovec iov[8]; 1768 #define IOADD(s) \ 1769 (void)(iov[i].iov_base = UNCONST(s), \ 1770 iov[i].iov_len = strlen(iov[i].iov_base), \ 1771 i++) 1772 #else 1773 #define IOADD(void)write(2, s, strlen(s)) 1774 #endif 1775 1776 IOADD(progname); 1777 IOADD(": "); 1778 IOADD(af); 1779 IOADD("("); 1780 IOADD(av); 1781 IOADD(") failed ("); 1782 IOADD(strerror(errno)); 1783 IOADD(")\n"); 1784 1785 #ifdef USE_IOVEC 1786 (void)writev(2, iov, 8); 1787 #endif 1788 } 1789 1790 /* 1791 * usage -- 1792 * exit with usage message 1793 */ 1794 static void 1795 usage(void) 1796 { 1797 (void)fprintf(stderr, 1798 "usage: %s [-BeikNnqrstWX] [-D variable] [-d flags] [-f makefile]\n\ 1799 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1800 [-V variable] [variable=value] [target ...]\n", progname); 1801 exit(2); 1802 } 1803 1804 1805 #ifdef notdef 1806 int 1807 PrintAddr(ClientData a, ClientData b) 1808 { 1809 printf("%lx ", (unsigned long) a); 1810 return b ? 0 : 0; 1811 } 1812 #endif 1813 1814 1815 void 1816 PrintOnError(const char *s) 1817 { 1818 char tmp[64]; 1819 char *cp; 1820 1821 if (s) 1822 printf("%s", s); 1823 1824 printf("\n%s: stopped in %s\n", progname, curdir); 1825 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1826 sizeof(tmp) - 1); 1827 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1828 if (cp) { 1829 if (*cp) 1830 printf("%s", cp); 1831 free(cp); 1832 } 1833 } 1834 1835 void 1836 Main_ExportMAKEFLAGS(Boolean first) 1837 { 1838 static int once = 1; 1839 char tmp[64]; 1840 char *s; 1841 1842 if (once != first) 1843 return; 1844 once = 0; 1845 1846 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1847 sizeof(tmp)); 1848 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1849 if (s && *s) { 1850 #ifdef POSIX 1851 setenv("MAKEFLAGS", s, 1); 1852 #else 1853 setenv("MAKE", s, 1); 1854 #endif 1855 } 1856 } 1857
Indexes created Sun Oct 19 02:09:48 GMT 2025