1 /* $NetBSD: main.c,v 1.175 2010/01/04 17:05:25 sjg 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 1.175 2010/01/04 17:05:25 sjg Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.175 2010/01/04 17:05:25 sjg 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(int, char **, int); 179 static void MainParseArgs(int, char **); 180 static int ReadMakefile(const void *, const void *); 181 static void usage(void); 182 183 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 184 static char curdir[MAXPATHLEN + 1]; /* startup directory */ 185 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 186 char *progname; /* the program name */ 187 188 Boolean forceJobs = FALSE; 189 190 extern Lst parseIncPath; 191 192 static void 193 parse_debug_options(const char *argvalue) 194 { 195 const char *modules; 196 const char *mode; 197 char *fname; 198 int len; 199 200 for (modules = argvalue; *modules; ++modules) { 201 switch (*modules) { 202 case 'A': 203 debug = ~0; 204 break; 205 case 'a': 206 debug |= DEBUG_ARCH; 207 break; 208 case 'C': 209 debug |= DEBUG_CWD; 210 break; 211 case 'c': 212 debug |= DEBUG_COND; 213 break; 214 case 'd': 215 debug |= DEBUG_DIR; 216 break; 217 case 'e': 218 debug |= DEBUG_ERROR; 219 break; 220 case 'f': 221 debug |= DEBUG_FOR; 222 break; 223 case 'g': 224 if (modules[1] == '1') { 225 debug |= DEBUG_GRAPH1; 226 ++modules; 227 } 228 else if (modules[1] == '2') { 229 debug |= DEBUG_GRAPH2; 230 ++modules; 231 } 232 else if (modules[1] == '3') { 233 debug |= DEBUG_GRAPH3; 234 ++modules; 235 } 236 break; 237 case 'j': 238 debug |= DEBUG_JOB; 239 break; 240 case 'l': 241 debug |= DEBUG_LOUD; 242 break; 243 case 'm': 244 debug |= DEBUG_MAKE; 245 break; 246 case 'n': 247 debug |= DEBUG_SCRIPT; 248 break; 249 case 'p': 250 debug |= DEBUG_PARSE; 251 break; 252 case 's': 253 debug |= DEBUG_SUFF; 254 break; 255 case 't': 256 debug |= DEBUG_TARG; 257 break; 258 case 'v': 259 debug |= DEBUG_VAR; 260 break; 261 case 'x': 262 debug |= DEBUG_SHELL; 263 break; 264 case 'F': 265 if (debug_file != stdout && debug_file != stderr) 266 fclose(debug_file); 267 if (*++modules == '+') 268 mode = "a"; 269 else 270 mode = "w"; 271 if (strcmp(modules, "stdout") == 0) { 272 debug_file = stdout; 273 goto debug_setbuf; 274 } 275 if (strcmp(modules, "stderr") == 0) { 276 debug_file = stderr; 277 goto debug_setbuf; 278 } 279 len = strlen(modules); 280 fname = malloc(len + 20); 281 memcpy(fname, modules, len + 1); 282 /* Let the filename be modified by the pid */ 283 if (strcmp(fname + len - 3, ".%d") == 0) 284 snprintf(fname + len - 2, 20, "%d", getpid()); 285 debug_file = fopen(fname, mode); 286 if (!debug_file) { 287 fprintf(stderr, "Cannot open debug file %s\n", 288 fname); 289 usage(); 290 } 291 free(fname); 292 goto debug_setbuf; 293 default: 294 (void)fprintf(stderr, 295 "%s: illegal argument to d option -- %c\n", 296 progname, *modules); 297 usage(); 298 } 299 } 300 debug_setbuf: 301 /* 302 * Make the debug_file unbuffered, and make 303 * stdout line buffered (unless debugfile == stdout). 304 */ 305 setvbuf(debug_file, NULL, _IONBF, 0); 306 if (debug_file != stdout) { 307 setvbuf(stdout, NULL, _IOLBF, 0); 308 } 309 } 310 311 /*- 312 * MainParseArgs -- 313 * Parse a given argument vector. Called from main() and from 314 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 315 * 316 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 317 * 318 * Results: 319 * None 320 * 321 * Side Effects: 322 * Various global and local flags will be set depending on the flags 323 * given 324 */ 325 static void 326 MainParseArgs(int argc, char **argv) 327 { 328 char *p; 329 int c = '?'; 330 int arginc; 331 char *argvalue; 332 const char *getopt_def; 333 char *optscan; 334 Boolean inOption, dashDash = FALSE; 335 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 336 337 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst" 338 /* Can't actually use getopt(3) because rescanning is not portable */ 339 340 getopt_def = OPTFLAGS; 341 rearg: 342 inOption = FALSE; 343 optscan = NULL; 344 while(argc > 1) { 345 char *getopt_spec; 346 if(!inOption) 347 optscan = argv[1]; 348 c = *optscan++; 349 arginc = 0; 350 if(inOption) { 351 if(c == '\0') { 352 ++argv; 353 --argc; 354 inOption = FALSE; 355 continue; 356 } 357 } else { 358 if (c != '-' || dashDash) 359 break; 360 inOption = TRUE; 361 c = *optscan++; 362 } 363 /* '-' found at some earlier point */ 364 getopt_spec = strchr(getopt_def, c); 365 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 366 /* -<something> found, and <something> should have an arg */ 367 inOption = FALSE; 368 arginc = 1; 369 argvalue = optscan; 370 if(*argvalue == '\0') { 371 if (argc < 3) 372 goto noarg; 373 argvalue = argv[2]; 374 arginc = 2; 375 } 376 } else { 377 argvalue = NULL; 378 } 379 switch(c) { 380 case '\0': 381 arginc = 1; 382 inOption = FALSE; 383 break; 384 case 'B': 385 compatMake = TRUE; 386 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 387 break; 388 case 'C': 389 if (chdir(argvalue) == -1) { 390 (void)fprintf(stderr, 391 "%s: chdir %s: %s\n", 392 progname, argvalue, 393 strerror(errno)); 394 exit(1); 395 } 396 if (getcwd(curdir, MAXPATHLEN) == NULL) { 397 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 398 exit(2); 399 } 400 ignorePWD = TRUE; 401 break; 402 case 'D': 403 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 404 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 405 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 406 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 407 break; 408 case 'I': 409 if (argvalue == NULL) goto noarg; 410 Parse_AddIncludeDir(argvalue); 411 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 412 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 413 break; 414 case 'J': 415 if (argvalue == NULL) goto noarg; 416 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 417 (void)fprintf(stderr, 418 "%s: internal error -- J option malformed (%s)\n", 419 progname, argvalue); 420 usage(); 421 } 422 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 423 (fcntl(jp_1, F_GETFD, 0) < 0)) { 424 #if 0 425 (void)fprintf(stderr, 426 "%s: ###### warning -- J descriptors were closed!\n", 427 progname); 428 exit(2); 429 #endif 430 jp_0 = -1; 431 jp_1 = -1; 432 compatMake = TRUE; 433 } else { 434 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 435 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 436 jobServer = TRUE; 437 } 438 break; 439 case 'N': 440 noExecute = TRUE; 441 noRecursiveExecute = TRUE; 442 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 443 break; 444 case 'S': 445 keepgoing = FALSE; 446 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 447 break; 448 case 'T': 449 if (argvalue == NULL) goto noarg; 450 tracefile = bmake_strdup(argvalue); 451 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 452 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 453 break; 454 case 'V': 455 if (argvalue == NULL) goto noarg; 456 printVars = TRUE; 457 (void)Lst_AtEnd(variables, argvalue); 458 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 459 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 460 break; 461 case 'W': 462 parseWarnFatal = TRUE; 463 break; 464 case 'X': 465 varNoExportEnv = TRUE; 466 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 467 break; 468 case 'd': 469 if (argvalue == NULL) goto noarg; 470 /* If '-d-opts' don't pass to children */ 471 if (argvalue[0] == '-') 472 argvalue++; 473 else { 474 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 475 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 476 } 477 parse_debug_options(argvalue); 478 break; 479 case 'e': 480 checkEnvFirst = TRUE; 481 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 482 break; 483 case 'f': 484 if (argvalue == NULL) goto noarg; 485 (void)Lst_AtEnd(makefiles, argvalue); 486 break; 487 case 'i': 488 ignoreErrors = TRUE; 489 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 490 break; 491 case 'j': 492 if (argvalue == NULL) goto noarg; 493 forceJobs = TRUE; 494 maxJobs = strtol(argvalue, &p, 0); 495 if (*p != '\0' || maxJobs < 1) { 496 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 497 progname); 498 exit(1); 499 } 500 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 501 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 502 maxJobTokens = maxJobs; 503 break; 504 case 'k': 505 keepgoing = TRUE; 506 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 507 break; 508 case 'm': 509 if (argvalue == NULL) goto noarg; 510 /* look for magic parent directory search string */ 511 if (strncmp(".../", argvalue, 4) == 0) { 512 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 513 found_path, sizeof(found_path))) 514 break; /* nothing doing */ 515 (void)Dir_AddDir(sysIncPath, found_path); 516 } else { 517 (void)Dir_AddDir(sysIncPath, argvalue); 518 } 519 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 520 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 521 break; 522 case 'n': 523 noExecute = TRUE; 524 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 525 break; 526 case 'q': 527 queryFlag = TRUE; 528 /* Kind of nonsensical, wot? */ 529 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 530 break; 531 case 'r': 532 noBuiltins = TRUE; 533 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 534 break; 535 case 's': 536 beSilent = TRUE; 537 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 538 break; 539 case 't': 540 touchFlag = TRUE; 541 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 542 break; 543 case '-': 544 dashDash = TRUE; 545 break; 546 default: 547 case '?': 548 usage(); 549 } 550 argv += arginc; 551 argc -= arginc; 552 } 553 554 oldVars = TRUE; 555 556 /* 557 * See if the rest of the arguments are variable assignments and 558 * perform them if so. Else take them to be targets and stuff them 559 * on the end of the "create" list. 560 */ 561 for (; argc > 1; ++argv, --argc) 562 if (Parse_IsVar(argv[1])) { 563 Parse_DoVar(argv[1], VAR_CMD); 564 } else { 565 if (!*argv[1]) 566 Punt("illegal (null) argument."); 567 if (*argv[1] == '-' && !dashDash) 568 goto rearg; 569 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 570 } 571 572 return; 573 noarg: 574 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 575 progname, c); 576 usage(); 577 } 578 579 /*- 580 * Main_ParseArgLine -- 581 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 582 * is encountered and by main() when reading the .MAKEFLAGS envariable. 583 * Takes a line of arguments and breaks it into its 584 * component words and passes those words and the number of them to the 585 * MainParseArgs function. 586 * The line should have all its leading whitespace removed. 587 * 588 * Input: 589 * line Line to fracture 590 * 591 * Results: 592 * None 593 * 594 * Side Effects: 595 * Only those that come from the various arguments. 596 */ 597 void 598 Main_ParseArgLine(const char *line) 599 { 600 char **argv; /* Manufactured argument vector */ 601 int argc; /* Number of arguments in argv */ 602 char *args; /* Space used by the args */ 603 char *buf, *p1; 604 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 605 size_t len; 606 607 if (line == NULL) 608 return; 609 for (; *line == ' '; ++line) 610 continue; 611 if (!*line) 612 return; 613 614 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 615 (void)snprintf(buf, len, "%s %s", argv0, line); 616 if (p1) 617 free(p1); 618 619 argv = brk_string(buf, &argc, TRUE, &args); 620 if (argv == NULL) { 621 Error("Unterminated quoted string [%s]", buf); 622 free(buf); 623 return; 624 } 625 free(buf); 626 MainParseArgs(argc, argv); 627 628 free(args); 629 free(argv); 630 } 631 632 Boolean 633 Main_SetObjdir(const char *path) 634 { 635 struct stat sb; 636 char *p = NULL; 637 char buf[MAXPATHLEN + 1]; 638 Boolean rc = FALSE; 639 640 /* expand variable substitutions */ 641 if (strchr(path, '$') != 0) { 642 snprintf(buf, MAXPATHLEN, "%s", path); 643 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 644 } 645 646 if (path[0] != '/') { 647 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 648 path = buf; 649 } 650 651 /* look for the directory and try to chdir there */ 652 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 653 if (chdir(path)) { 654 (void)fprintf(stderr, "make warning: %s: %s.\n", 655 path, strerror(errno)); 656 } else { 657 strncpy(objdir, path, MAXPATHLEN); 658 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 659 setenv("PWD", objdir, 1); 660 Dir_InitDot(); 661 rc = TRUE; 662 } 663 } 664 665 if (p) 666 free(p); 667 return rc; 668 } 669 670 /*- 671 * ReadAllMakefiles -- 672 * wrapper around ReadMakefile() to read all. 673 * 674 * Results: 675 * TRUE if ok, FALSE on error 676 */ 677 static int 678 ReadAllMakefiles(const void *p, const void *q) 679 { 680 return (ReadMakefile(p, q) == 0); 681 } 682 683 #ifdef SIGINFO 684 /*ARGSUSED*/ 685 static void 686 siginfo(int signo) 687 { 688 char dir[MAXPATHLEN]; 689 char str[2 * MAXPATHLEN]; 690 int len; 691 if (getcwd(dir, sizeof(dir)) == NULL) 692 return; 693 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 694 if (len > 0) 695 (void)write(STDERR_FILENO, str, (size_t)len); 696 } 697 #endif 698 699 /*- 700 * main -- 701 * The main function, for obvious reasons. Initializes variables 702 * and a few modules, then parses the arguments give it in the 703 * environment and on the command line. Reads the system makefile 704 * followed by either Makefile, makefile or the file given by the 705 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 706 * flags it has received by then uses either the Make or the Compat 707 * module to create the initial list of targets. 708 * 709 * Results: 710 * If -q was given, exits -1 if anything was out-of-date. Else it exits 711 * 0. 712 * 713 * Side Effects: 714 * The program exits when done. Targets are created. etc. etc. etc. 715 */ 716 int 717 main(int argc, char **argv) 718 { 719 Lst targs; /* target nodes to create -- passed to Make_Init */ 720 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 721 struct stat sb, sa; 722 char *p1, *path, *pwd; 723 char mdpath[MAXPATHLEN]; 724 char *machine = getenv("MACHINE"); 725 const char *machine_arch = getenv("MACHINE_ARCH"); 726 char *syspath = getenv("MAKESYSPATH"); 727 Lst sysMkPath; /* Path of sys.mk */ 728 char *cp = NULL, *start; 729 /* avoid faults on read-only strings */ 730 static char defsyspath[] = _PATH_DEFSYSPATH; 731 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 732 struct timeval rightnow; /* to initialize random seed */ 733 #ifdef MAKE_NATIVE 734 struct utsname utsname; 735 #endif 736 737 /* default to writing debug to stderr */ 738 debug_file = stderr; 739 740 #ifdef SIGINFO 741 (void)signal(SIGINFO, siginfo); 742 #endif 743 /* 744 * Set the seed to produce a different random sequence 745 * on each program execution. 746 */ 747 gettimeofday(&rightnow, NULL); 748 srandom(rightnow.tv_sec + rightnow.tv_usec); 749 750 if ((progname = strrchr(argv[0], '/')) != NULL) 751 progname++; 752 else 753 progname = argv[0]; 754 #ifdef RLIMIT_NOFILE 755 /* 756 * get rid of resource limit on file descriptors 757 */ 758 { 759 struct rlimit rl; 760 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 761 rl.rlim_cur != rl.rlim_max) { 762 rl.rlim_cur = rl.rlim_max; 763 (void)setrlimit(RLIMIT_NOFILE, &rl); 764 } 765 } 766 #endif 767 768 /* 769 * Get the name of this type of MACHINE from utsname 770 * so we can share an executable for similar machines. 771 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 772 * 773 * Note that both MACHINE and MACHINE_ARCH are decided at 774 * run-time. 775 */ 776 if (!machine) { 777 #ifdef MAKE_NATIVE 778 if (uname(&utsname) == -1) { 779 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 780 strerror(errno)); 781 exit(2); 782 } 783 machine = utsname.machine; 784 #else 785 #ifdef MAKE_MACHINE 786 machine = MAKE_MACHINE; 787 #else 788 machine = "unknown"; 789 #endif 790 #endif 791 } 792 793 if (!machine_arch) { 794 #ifndef MACHINE_ARCH 795 #ifdef MAKE_MACHINE_ARCH 796 machine_arch = MAKE_MACHINE_ARCH; 797 #else 798 machine_arch = "unknown"; 799 #endif 800 #else 801 machine_arch = MACHINE_ARCH; 802 #endif 803 } 804 805 /* 806 * Just in case MAKEOBJDIR wants us to do something tricky. 807 */ 808 Var_Init(); /* Initialize the lists of variables for 809 * parsing arguments */ 810 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 811 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 812 #ifdef MAKE_VERSION 813 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 814 #endif 815 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 816 817 create = Lst_Init(FALSE); 818 makefiles = Lst_Init(FALSE); 819 printVars = FALSE; 820 variables = Lst_Init(FALSE); 821 beSilent = FALSE; /* Print commands as executed */ 822 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 823 noExecute = FALSE; /* Execute all commands */ 824 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 825 keepgoing = FALSE; /* Stop on error */ 826 allPrecious = FALSE; /* Remove targets when interrupted */ 827 queryFlag = FALSE; /* This is not just a check-run */ 828 noBuiltins = FALSE; /* Read the built-in rules */ 829 touchFlag = FALSE; /* Actually update targets */ 830 debug = 0; /* No debug verbosity, please. */ 831 jobsRunning = FALSE; 832 833 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 834 maxJobTokens = maxJobs; 835 compatMake = FALSE; /* No compat mode */ 836 ignorePWD = FALSE; 837 838 /* 839 * Initialize the parsing, directory and variable modules to prepare 840 * for the reading of inclusion paths and variable settings on the 841 * command line 842 */ 843 844 /* 845 * Initialize various variables. 846 * MAKE also gets this name, for compatibility 847 * .MAKEFLAGS gets set to the empty string just in case. 848 * MFLAGS also gets initialized empty, for compatibility. 849 */ 850 Parse_Init(); 851 Var_Set("MAKE", argv[0], VAR_GLOBAL, 0); 852 Var_Set(".MAKE", argv[0], VAR_GLOBAL, 0); 853 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 854 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 855 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 856 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 857 858 /* 859 * Set some other useful macros 860 */ 861 { 862 char tmp[64]; 863 const char *ep; 864 865 if (!(ep = getenv(MAKE_LEVEL))) { 866 ep = "0"; 867 } 868 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0); 869 snprintf(tmp, sizeof(tmp), "%u", getpid()); 870 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 871 snprintf(tmp, sizeof(tmp), "%u", getppid()); 872 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 873 } 874 Job_SetPrefix(); 875 876 /* 877 * First snag any flags out of the MAKE environment variable. 878 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 879 * in a different format). 880 */ 881 #ifdef POSIX 882 Main_ParseArgLine(getenv("MAKEFLAGS")); 883 #else 884 Main_ParseArgLine(getenv("MAKE")); 885 #endif 886 887 /* 888 * Find where we are (now). 889 * We take care of PWD for the automounter below... 890 */ 891 if (getcwd(curdir, MAXPATHLEN) == NULL) { 892 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 893 exit(2); 894 } 895 896 MainParseArgs(argc, argv); 897 898 /* 899 * Verify that cwd is sane. 900 */ 901 if (stat(curdir, &sa) == -1) { 902 (void)fprintf(stderr, "%s: %s: %s.\n", 903 progname, curdir, strerror(errno)); 904 exit(2); 905 } 906 907 /* 908 * All this code is so that we know where we are when we start up 909 * on a different machine with pmake. 910 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 911 * since the value of curdir can vary depending on how we got 912 * here. Ie sitting at a shell prompt (shell that provides $PWD) 913 * or via subdir.mk in which case its likely a shell which does 914 * not provide it. 915 * So, to stop it breaking this case only, we ignore PWD if 916 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 917 */ 918 if (!ignorePWD && 919 (pwd = getenv("PWD")) != NULL && 920 getenv("MAKEOBJDIRPREFIX") == NULL) { 921 const char *makeobjdir = getenv("MAKEOBJDIR"); 922 923 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 924 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 925 sa.st_dev == sb.st_dev) 926 (void)strncpy(curdir, pwd, MAXPATHLEN); 927 } 928 } 929 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 930 931 /* 932 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 933 * MAKEOBJDIR is set in the environment, try only that value 934 * and fall back to .CURDIR if it does not exist. 935 * 936 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 937 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 938 * of these paths exist, just use .CURDIR. 939 */ 940 Dir_Init(curdir); 941 (void)Main_SetObjdir(curdir); 942 943 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 944 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 945 (void)Main_SetObjdir(mdpath); 946 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 947 (void)Main_SetObjdir(path); 948 } else { 949 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 950 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 951 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 952 _PATH_OBJDIRPREFIX, curdir); 953 (void)Main_SetObjdir(mdpath); 954 } 955 } 956 957 /* 958 * Be compatible if user did not specify -j and did not explicitly 959 * turned compatibility on 960 */ 961 if (!compatMake && !forceJobs) { 962 compatMake = TRUE; 963 } 964 965 /* 966 * Initialize archive, target and suffix modules in preparation for 967 * parsing the makefile(s) 968 */ 969 Arch_Init(); 970 Targ_Init(); 971 Suff_Init(); 972 Trace_Init(tracefile); 973 974 DEFAULT = NULL; 975 (void)time(&now); 976 977 Trace_Log(MAKESTART, NULL); 978 979 /* 980 * Set up the .TARGETS variable to contain the list of targets to be 981 * created. If none specified, make the variable empty -- the parser 982 * will fill the thing in with the default or .MAIN target. 983 */ 984 if (!Lst_IsEmpty(create)) { 985 LstNode ln; 986 987 for (ln = Lst_First(create); ln != NULL; 988 ln = Lst_Succ(ln)) { 989 char *name = (char *)Lst_Datum(ln); 990 991 Var_Append(".TARGETS", name, VAR_GLOBAL); 992 } 993 } else 994 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 995 996 997 /* 998 * If no user-supplied system path was given (through the -m option) 999 * add the directories from the DEFSYSPATH (more than one may be given 1000 * as dir1:...:dirn) to the system include path. 1001 */ 1002 if (syspath == NULL || *syspath == '\0') 1003 syspath = defsyspath; 1004 else 1005 syspath = bmake_strdup(syspath); 1006 1007 for (start = syspath; *start != '\0'; start = cp) { 1008 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1009 continue; 1010 if (*cp == ':') { 1011 *cp++ = '\0'; 1012 } 1013 /* look for magic parent directory search string */ 1014 if (strncmp(".../", start, 4) != 0) { 1015 (void)Dir_AddDir(defIncPath, start); 1016 } else { 1017 if (Dir_FindHereOrAbove(curdir, start+4, 1018 found_path, sizeof(found_path))) { 1019 (void)Dir_AddDir(defIncPath, found_path); 1020 } 1021 } 1022 } 1023 if (syspath != defsyspath) 1024 free(syspath); 1025 1026 /* 1027 * Read in the built-in rules first, followed by the specified 1028 * makefile, if it was (makefile != NULL), or the default 1029 * makefile and Makefile, in that order, if it wasn't. 1030 */ 1031 if (!noBuiltins) { 1032 LstNode ln; 1033 1034 sysMkPath = Lst_Init(FALSE); 1035 Dir_Expand(_PATH_DEFSYSMK, 1036 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1037 sysMkPath); 1038 if (Lst_IsEmpty(sysMkPath)) 1039 Fatal("%s: no system rules (%s).", progname, 1040 _PATH_DEFSYSMK); 1041 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1042 if (ln == NULL) 1043 Fatal("%s: cannot open %s.", progname, 1044 (char *)Lst_Datum(ln)); 1045 } 1046 1047 if (!Lst_IsEmpty(makefiles)) { 1048 LstNode ln; 1049 1050 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1051 if (ln != NULL) 1052 Fatal("%s: cannot open %s.", progname, 1053 (char *)Lst_Datum(ln)); 1054 } else if (ReadMakefile("makefile", NULL) != 0) 1055 (void)ReadMakefile("Makefile", NULL); 1056 1057 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1058 if (!noBuiltins || !printVars) { 1059 doing_depend = TRUE; 1060 (void)ReadMakefile(".depend", NULL); 1061 doing_depend = FALSE; 1062 } 1063 1064 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1065 if (p1) 1066 free(p1); 1067 1068 if (!compatMake) 1069 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1070 if (DEBUG(JOB)) 1071 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1072 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1073 1074 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1075 1076 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1077 1078 1079 /* 1080 * For compatibility, look at the directories in the VPATH variable 1081 * and add them to the search path, if the variable is defined. The 1082 * variable's value is in the same format as the PATH envariable, i.e. 1083 * <directory>:<directory>:<directory>... 1084 */ 1085 if (Var_Exists("VPATH", VAR_CMD)) { 1086 char *vpath, savec; 1087 /* 1088 * GCC stores string constants in read-only memory, but 1089 * Var_Subst will want to write this thing, so store it 1090 * in an array 1091 */ 1092 static char VPATH[] = "${VPATH}"; 1093 1094 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1095 path = vpath; 1096 do { 1097 /* skip to end of directory */ 1098 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1099 continue; 1100 /* Save terminator character so know when to stop */ 1101 savec = *cp; 1102 *cp = '\0'; 1103 /* Add directory to search path */ 1104 (void)Dir_AddDir(dirSearchPath, path); 1105 *cp = savec; 1106 path = cp + 1; 1107 } while (savec == ':'); 1108 free(vpath); 1109 } 1110 1111 /* 1112 * Now that all search paths have been read for suffixes et al, it's 1113 * time to add the default search path to their lists... 1114 */ 1115 Suff_DoPaths(); 1116 1117 /* 1118 * Propagate attributes through :: dependency lists. 1119 */ 1120 Targ_Propagate(); 1121 1122 /* print the initial graph, if the user requested it */ 1123 if (DEBUG(GRAPH1)) 1124 Targ_PrintGraph(1); 1125 1126 /* print the values of any variables requested by the user */ 1127 if (printVars) { 1128 LstNode ln; 1129 1130 for (ln = Lst_First(variables); ln != NULL; 1131 ln = Lst_Succ(ln)) { 1132 char *var = (char *)Lst_Datum(ln); 1133 char *value; 1134 1135 if (strchr(var, '$')) { 1136 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1137 } else { 1138 value = Var_Value(var, VAR_GLOBAL, &p1); 1139 } 1140 printf("%s\n", value ? value : ""); 1141 if (p1) 1142 free(p1); 1143 } 1144 } else { 1145 /* 1146 * Have now read the entire graph and need to make a list of 1147 * targets to create. If none was given on the command line, 1148 * we consult the parsing module to find the main target(s) 1149 * to create. 1150 */ 1151 if (Lst_IsEmpty(create)) 1152 targs = Parse_MainName(); 1153 else 1154 targs = Targ_FindList(create, TARG_CREATE); 1155 1156 if (!compatMake) { 1157 /* 1158 * Initialize job module before traversing the graph 1159 * now that any .BEGIN and .END targets have been read. 1160 * This is done only if the -q flag wasn't given 1161 * (to prevent the .BEGIN from being executed should 1162 * it exist). 1163 */ 1164 if (!queryFlag) { 1165 Job_Init(); 1166 jobsRunning = TRUE; 1167 } 1168 1169 /* Traverse the graph, checking on all the targets */ 1170 outOfDate = Make_Run(targs); 1171 } else { 1172 /* 1173 * Compat_Init will take care of creating all the 1174 * targets as well as initializing the module. 1175 */ 1176 Compat_Run(targs); 1177 } 1178 } 1179 1180 #ifdef CLEANUP 1181 Lst_Destroy(targs, NULL); 1182 Lst_Destroy(variables, NULL); 1183 Lst_Destroy(makefiles, NULL); 1184 Lst_Destroy(create, (FreeProc *)free); 1185 #endif 1186 1187 /* print the graph now it's been processed if the user requested it */ 1188 if (DEBUG(GRAPH2)) 1189 Targ_PrintGraph(2); 1190 1191 Trace_Log(MAKEEND, 0); 1192 1193 Suff_End(); 1194 Targ_End(); 1195 Arch_End(); 1196 Var_End(); 1197 Parse_End(); 1198 Dir_End(); 1199 Job_End(); 1200 Trace_End(); 1201 1202 return outOfDate ? 1 : 0; 1203 } 1204 1205 /*- 1206 * ReadMakefile -- 1207 * Open and parse the given makefile. 1208 * 1209 * Results: 1210 * 0 if ok. -1 if couldn't open file. 1211 * 1212 * Side Effects: 1213 * lots 1214 */ 1215 static int 1216 ReadMakefile(const void *p, const void *q __unused) 1217 { 1218 const char *fname = p; /* makefile to read */ 1219 int fd; 1220 size_t len = MAXPATHLEN; 1221 char *name, *path = bmake_malloc(len); 1222 int setMAKEFILE; 1223 1224 if (!strcmp(fname, "-")) { 1225 Parse_File("(stdin)", dup(fileno(stdin))); 1226 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1227 } else { 1228 setMAKEFILE = strcmp(fname, ".depend"); 1229 1230 /* if we've chdir'd, rebuild the path name */ 1231 if (strcmp(curdir, objdir) && *fname != '/') { 1232 size_t plen = strlen(curdir) + strlen(fname) + 2; 1233 if (len < plen) 1234 path = bmake_realloc(path, len = 2 * plen); 1235 1236 (void)snprintf(path, len, "%s/%s", curdir, fname); 1237 fd = open(path, O_RDONLY); 1238 if (fd != -1) { 1239 fname = path; 1240 goto found; 1241 } 1242 1243 /* If curdir failed, try objdir (ala .depend) */ 1244 plen = strlen(objdir) + strlen(fname) + 2; 1245 if (len < plen) 1246 path = bmake_realloc(path, len = 2 * plen); 1247 (void)snprintf(path, len, "%s/%s", objdir, fname); 1248 fd = open(path, O_RDONLY); 1249 if (fd != -1) { 1250 fname = path; 1251 goto found; 1252 } 1253 } else { 1254 fd = open(fname, O_RDONLY); 1255 if (fd != -1) 1256 goto found; 1257 } 1258 /* look in -I and system include directories. */ 1259 name = Dir_FindFile(fname, parseIncPath); 1260 if (!name) 1261 name = Dir_FindFile(fname, 1262 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1263 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1264 if (name) 1265 free(name); 1266 free(path); 1267 return(-1); 1268 } 1269 fname = name; 1270 /* 1271 * set the MAKEFILE variable desired by System V fans -- the 1272 * placement of the setting here means it gets set to the last 1273 * makefile specified, as it is set by SysV make. 1274 */ 1275 found: 1276 if (setMAKEFILE) 1277 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1278 Parse_File(fname, fd); 1279 } 1280 free(path); 1281 return(0); 1282 } 1283 1284 1285 /* 1286 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1287 * in situations that would not arrise with ./obj (links or not). 1288 * This tends to break things like: 1289 * 1290 * build: 1291 * ${MAKE} includes 1292 * 1293 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1294 * opposed to an argument) in a command line and if so returns 1295 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1296 * the Makefile hold true. 1297 * 1298 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1299 * 1300 * The chdir() only happens in the child process, and does nothing if 1301 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1302 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1303 * do nothing - to ensure historic semantics can be retained. 1304 */ 1305 static int Check_Cwd_Off = 0; 1306 1307 static char * 1308 Check_Cwd_av(int ac, char **av, int copy) 1309 { 1310 static char *make[4]; 1311 static char *cur_dir = NULL; 1312 char **mp; 1313 char *cp; 1314 int is_cmd, next_cmd; 1315 int i; 1316 int n; 1317 1318 if (Check_Cwd_Off) { 1319 if (DEBUG(CWD)) 1320 fprintf(debug_file, "check_cwd: check is off.\n"); 1321 return NULL; 1322 } 1323 1324 if (make[0] == NULL) { 1325 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1326 Check_Cwd_Off = 1; 1327 if (DEBUG(CWD)) 1328 fprintf(debug_file, "check_cwd: turning check off.\n"); 1329 return NULL; 1330 } 1331 1332 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1333 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1334 make[0] = make[1]; 1335 make[1] = NULL; 1336 } else 1337 ++make[0]; 1338 make[2] = NULL; 1339 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1340 } 1341 if (ac == 0 || av == NULL) { 1342 if (DEBUG(CWD)) 1343 fprintf(debug_file, "check_cwd: empty command.\n"); 1344 return NULL; /* initialization only */ 1345 } 1346 1347 if (getenv("MAKEOBJDIR") == NULL && 1348 getenv("MAKEOBJDIRPREFIX") == NULL) { 1349 if (DEBUG(CWD)) 1350 fprintf(debug_file, "check_cwd: no obj dirs.\n"); 1351 return NULL; 1352 } 1353 1354 1355 next_cmd = 1; 1356 for (i = 0; i < ac; ++i) { 1357 is_cmd = next_cmd; 1358 1359 n = strlen(av[i]); 1360 cp = &(av[i])[n - 1]; 1361 if (strspn(av[i], "|&;") == (size_t)n) { 1362 next_cmd = 1; 1363 continue; 1364 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1365 next_cmd = 1; 1366 if (copy) { 1367 do { 1368 *cp-- = '\0'; 1369 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1370 *cp == ')' || *cp == '}') ; 1371 } else { 1372 /* 1373 * XXX this should not happen. 1374 */ 1375 fprintf(stderr, "%s: WARNING: raw arg ends in shell meta '%s'\n", 1376 progname, av[i]); 1377 } 1378 } else 1379 next_cmd = 0; 1380 1381 cp = av[i]; 1382 if (*cp == ';' || *cp == '&' || *cp == '|') 1383 is_cmd = 1; 1384 1385 if (DEBUG(CWD)) 1386 fprintf(debug_file, "av[%d] == %s '%s'", 1387 i, (is_cmd) ? "cmd" : "arg", av[i]); 1388 if (is_cmd != 0) { 1389 if (*cp == '(' || *cp == '{' || 1390 *cp == ';' || *cp == '&' || *cp == '|') { 1391 do { 1392 ++cp; 1393 } while (*cp == '(' || *cp == '{' || 1394 *cp == ';' || *cp == '&' || *cp == '|'); 1395 if (*cp == '\0') { 1396 next_cmd = 1; 1397 continue; 1398 } 1399 } 1400 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1401 if (DEBUG(CWD)) 1402 fprintf(debug_file, " == cd, done.\n"); 1403 return NULL; 1404 } 1405 for (mp = make; *mp != NULL; ++mp) { 1406 n = strlen(*mp); 1407 if (strcmp(cp, *mp) == 0) { 1408 if (DEBUG(CWD)) 1409 fprintf(debug_file, " %s == '%s', chdir(%s)\n", 1410 cp, *mp, cur_dir); 1411 return cur_dir; 1412 } 1413 } 1414 } 1415 if (DEBUG(CWD)) 1416 fprintf(debug_file, "\n"); 1417 } 1418 return NULL; 1419 } 1420 1421 char * 1422 Check_Cwd_Cmd(const char *cmd) 1423 { 1424 char *cp, *bp; 1425 char **av; 1426 int ac; 1427 1428 if (Check_Cwd_Off) 1429 return NULL; 1430 1431 if (cmd) { 1432 av = brk_string(cmd, &ac, TRUE, &bp); 1433 if (DEBUG(CWD)) 1434 fprintf(debug_file, "splitting: '%s' -> %d words\n", 1435 cmd, ac); 1436 } else { 1437 ac = 0; 1438 av = NULL; 1439 bp = NULL; 1440 } 1441 cp = Check_Cwd_av(ac, av, 1); 1442 if (bp) 1443 free(bp); 1444 if (av) 1445 free(av); 1446 return cp; 1447 } 1448 1449 void 1450 Check_Cwd(const char **argv) 1451 { 1452 char *cp; 1453 int ac; 1454 1455 if (Check_Cwd_Off) 1456 return; 1457 1458 for (ac = 0; argv[ac] != NULL; ++ac) 1459 /* NOTHING */; 1460 if (ac == 3 && *argv[1] == '-') { 1461 cp = Check_Cwd_Cmd(argv[2]); 1462 } else { 1463 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1464 } 1465 if (cp) { 1466 chdir(cp); 1467 } 1468 } 1469 1470 /*- 1471 * Cmd_Exec -- 1472 * Execute the command in cmd, and return the output of that command 1473 * in a string. 1474 * 1475 * Results: 1476 * A string containing the output of the command, or the empty string 1477 * If errnum is not NULL, it contains the reason for the command failure 1478 * 1479 * Side Effects: 1480 * The string must be freed by the caller. 1481 */ 1482 char * 1483 Cmd_Exec(const char *cmd, const char **errnum) 1484 { 1485 const char *args[4]; /* Args for invoking the shell */ 1486 int fds[2]; /* Pipe streams */ 1487 int cpid; /* Child PID */ 1488 int pid; /* PID from wait() */ 1489 char *res; /* result */ 1490 int status; /* command exit status */ 1491 Buffer buf; /* buffer to store the result */ 1492 char *cp; 1493 int cc; 1494 1495 1496 *errnum = NULL; 1497 1498 if (!shellName) 1499 Shell_Init(); 1500 /* 1501 * Set up arguments for shell 1502 */ 1503 args[0] = shellName; 1504 args[1] = "-c"; 1505 args[2] = cmd; 1506 args[3] = NULL; 1507 1508 /* 1509 * Open a pipe for fetching its output 1510 */ 1511 if (pipe(fds) == -1) { 1512 *errnum = "Couldn't create pipe for \"%s\""; 1513 goto bad; 1514 } 1515 1516 /* 1517 * Fork 1518 */ 1519 switch (cpid = vfork()) { 1520 case 0: 1521 /* 1522 * Close input side of pipe 1523 */ 1524 (void)close(fds[0]); 1525 1526 /* 1527 * Duplicate the output stream to the shell's output, then 1528 * shut the extra thing down. Note we don't fetch the error 1529 * stream...why not? Why? 1530 */ 1531 (void)dup2(fds[1], 1); 1532 (void)close(fds[1]); 1533 1534 Var_ExportVars(); 1535 1536 (void)execv(shellPath, UNCONST(args)); 1537 _exit(1); 1538 /*NOTREACHED*/ 1539 1540 case -1: 1541 *errnum = "Couldn't exec \"%s\""; 1542 goto bad; 1543 1544 default: 1545 /* 1546 * No need for the writing half 1547 */ 1548 (void)close(fds[1]); 1549 1550 Buf_Init(&buf, 0); 1551 1552 do { 1553 char result[BUFSIZ]; 1554 cc = read(fds[0], result, sizeof(result)); 1555 if (cc > 0) 1556 Buf_AddBytes(&buf, cc, result); 1557 } 1558 while (cc > 0 || (cc == -1 && errno == EINTR)); 1559 1560 /* 1561 * Close the input side of the pipe. 1562 */ 1563 (void)close(fds[0]); 1564 1565 /* 1566 * Wait for the process to exit. 1567 */ 1568 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) 1569 continue; 1570 1571 cc = Buf_Size(&buf); 1572 res = Buf_Destroy(&buf, FALSE); 1573 1574 if (cc == 0) 1575 *errnum = "Couldn't read shell's output for \"%s\""; 1576 1577 if (WIFSIGNALED(status)) 1578 *errnum = "\"%s\" exited on a signal"; 1579 else if (WEXITSTATUS(status) != 0) 1580 *errnum = "\"%s\" returned non-zero status"; 1581 1582 /* 1583 * Null-terminate the result, convert newlines to spaces and 1584 * install it in the variable. 1585 */ 1586 res[cc] = '\0'; 1587 cp = &res[cc]; 1588 1589 if (cc > 0 && *--cp == '\n') { 1590 /* 1591 * A final newline is just stripped 1592 */ 1593 *cp-- = '\0'; 1594 } 1595 while (cp >= res) { 1596 if (*cp == '\n') { 1597 *cp = ' '; 1598 } 1599 cp--; 1600 } 1601 break; 1602 } 1603 return res; 1604 bad: 1605 res = bmake_malloc(1); 1606 *res = '\0'; 1607 return res; 1608 } 1609 1610 /*- 1611 * Error -- 1612 * Print an error message given its format. 1613 * 1614 * Results: 1615 * None. 1616 * 1617 * Side Effects: 1618 * The message is printed. 1619 */ 1620 /* VARARGS */ 1621 void 1622 Error(const char *fmt, ...) 1623 { 1624 va_list ap; 1625 FILE *err_file; 1626 1627 err_file = debug_file; 1628 if (err_file == stdout) 1629 err_file = stderr; 1630 for (;;) { 1631 va_start(ap, fmt); 1632 fprintf(err_file, "%s: ", progname); 1633 (void)vfprintf(err_file, fmt, ap); 1634 va_end(ap); 1635 (void)fprintf(err_file, "\n"); 1636 (void)fflush(err_file); 1637 if (err_file == stderr) 1638 break; 1639 err_file = stderr; 1640 } 1641 } 1642 1643 /*- 1644 * Fatal -- 1645 * Produce a Fatal error message. If jobs are running, waits for them 1646 * to finish. 1647 * 1648 * Results: 1649 * None 1650 * 1651 * Side Effects: 1652 * The program exits 1653 */ 1654 /* VARARGS */ 1655 void 1656 Fatal(const char *fmt, ...) 1657 { 1658 va_list ap; 1659 1660 va_start(ap, fmt); 1661 if (jobsRunning) 1662 Job_Wait(); 1663 1664 (void)vfprintf(stderr, fmt, ap); 1665 va_end(ap); 1666 (void)fprintf(stderr, "\n"); 1667 (void)fflush(stderr); 1668 1669 PrintOnError(NULL); 1670 1671 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1672 Targ_PrintGraph(2); 1673 Trace_Log(MAKEERROR, 0); 1674 exit(2); /* Not 1 so -q can distinguish error */ 1675 } 1676 1677 /* 1678 * Punt -- 1679 * Major exception once jobs are being created. Kills all jobs, prints 1680 * a message and exits. 1681 * 1682 * Results: 1683 * None 1684 * 1685 * Side Effects: 1686 * All children are killed indiscriminately and the program Lib_Exits 1687 */ 1688 /* VARARGS */ 1689 void 1690 Punt(const char *fmt, ...) 1691 { 1692 va_list ap; 1693 1694 va_start(ap, fmt); 1695 (void)fprintf(stderr, "%s: ", progname); 1696 (void)vfprintf(stderr, fmt, ap); 1697 va_end(ap); 1698 (void)fprintf(stderr, "\n"); 1699 (void)fflush(stderr); 1700 1701 PrintOnError(NULL); 1702 1703 DieHorribly(); 1704 } 1705 1706 /*- 1707 * DieHorribly -- 1708 * Exit without giving a message. 1709 * 1710 * Results: 1711 * None 1712 * 1713 * Side Effects: 1714 * A big one... 1715 */ 1716 void 1717 DieHorribly(void) 1718 { 1719 if (jobsRunning) 1720 Job_AbortAll(); 1721 if (DEBUG(GRAPH2)) 1722 Targ_PrintGraph(2); 1723 Trace_Log(MAKEERROR, 0); 1724 exit(2); /* Not 1, so -q can distinguish error */ 1725 } 1726 1727 /* 1728 * Finish -- 1729 * Called when aborting due to errors in child shell to signal 1730 * abnormal exit. 1731 * 1732 * Results: 1733 * None 1734 * 1735 * Side Effects: 1736 * The program exits 1737 */ 1738 void 1739 Finish(int errors) 1740 /* number of errors encountered in Make_Make */ 1741 { 1742 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1743 } 1744 1745 /* 1746 * enunlink -- 1747 * Remove a file carefully, avoiding directories. 1748 */ 1749 int 1750 eunlink(const char *file) 1751 { 1752 struct stat st; 1753 1754 if (lstat(file, &st) == -1) 1755 return -1; 1756 1757 if (S_ISDIR(st.st_mode)) { 1758 errno = EISDIR; 1759 return -1; 1760 } 1761 return unlink(file); 1762 } 1763 1764 /* 1765 * execError -- 1766 * Print why exec failed, avoiding stdio. 1767 */ 1768 void 1769 execError(const char *af, const char *av) 1770 { 1771 #ifdef USE_IOVEC 1772 int i = 0; 1773 struct iovec iov[8]; 1774 #define IOADD(s) \ 1775 (void)(iov[i].iov_base = UNCONST(s), \ 1776 iov[i].iov_len = strlen(iov[i].iov_base), \ 1777 i++) 1778 #else 1779 #define IOADD(void)write(2, s, strlen(s)) 1780 #endif 1781 1782 IOADD(progname); 1783 IOADD(": "); 1784 IOADD(af); 1785 IOADD("("); 1786 IOADD(av); 1787 IOADD(") failed ("); 1788 IOADD(strerror(errno)); 1789 IOADD(")\n"); 1790 1791 #ifdef USE_IOVEC 1792 (void)writev(2, iov, 8); 1793 #endif 1794 } 1795 1796 /* 1797 * usage -- 1798 * exit with usage message 1799 */ 1800 static void 1801 usage(void) 1802 { 1803 (void)fprintf(stderr, 1804 "usage: %s [-BeikNnqrstWX] \n\ 1805 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1806 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1807 [-V variable] [variable=value] [target ...]\n", progname); 1808 exit(2); 1809 } 1810 1811 1812 int 1813 PrintAddr(void *a, void *b) 1814 { 1815 printf("%lx ", (unsigned long) a); 1816 return b ? 0 : 0; 1817 } 1818 1819 1820 1821 void 1822 PrintOnError(const char *s) 1823 { 1824 char tmp[64]; 1825 char *cp; 1826 1827 if (s) 1828 printf("%s", s); 1829 1830 printf("\n%s: stopped in %s\n", progname, curdir); 1831 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1832 sizeof(tmp) - 1); 1833 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1834 if (cp) { 1835 if (*cp) 1836 printf("%s", cp); 1837 free(cp); 1838 } 1839 } 1840 1841 void 1842 Main_ExportMAKEFLAGS(Boolean first) 1843 { 1844 static int once = 1; 1845 char tmp[64]; 1846 char *s; 1847 1848 if (once != first) 1849 return; 1850 once = 0; 1851 1852 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1853 sizeof(tmp)); 1854 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1855 if (s && *s) { 1856 #ifdef POSIX 1857 setenv("MAKEFLAGS", s, 1); 1858 #else 1859 setenv("MAKE", s, 1); 1860 #endif 1861 } 1862 } 1863