1 /* $NetBSD: main.c,v 1.170 2009/03/24 13:53:21 perry 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 1.170 2009/03/24 13:53:21 perry 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 1.170 2009/03/24 13:53:21 perry 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 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 int 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_CWD; 209 break; 210 case 'c': 211 debug |= DEBUG_COND; 212 break; 213 case 'd': 214 debug |= DEBUG_DIR; 215 break; 216 case 'e': 217 debug |= DEBUG_ERROR; 218 break; 219 case 'f': 220 debug |= DEBUG_FOR; 221 break; 222 case 'g': 223 if (modules[1] == '1') { 224 debug |= DEBUG_GRAPH1; 225 ++modules; 226 } 227 else if (modules[1] == '2') { 228 debug |= DEBUG_GRAPH2; 229 ++modules; 230 } 231 else if (modules[1] == '3') { 232 debug |= DEBUG_GRAPH3; 233 ++modules; 234 } 235 break; 236 case 'j': 237 debug |= DEBUG_JOB; 238 break; 239 case 'l': 240 debug |= DEBUG_LOUD; 241 break; 242 case 'm': 243 debug |= DEBUG_MAKE; 244 break; 245 case 'n': 246 debug |= DEBUG_SCRIPT; 247 break; 248 case 'p': 249 debug |= DEBUG_PARSE; 250 break; 251 case 's': 252 debug |= DEBUG_SUFF; 253 break; 254 case 't': 255 debug |= DEBUG_TARG; 256 break; 257 case 'v': 258 debug |= DEBUG_VAR; 259 break; 260 case 'x': 261 debug |= DEBUG_SHELL; 262 break; 263 case 'F': 264 if (debug_file != stdout && debug_file != stderr) 265 fclose(debug_file); 266 if (*++modules == '+') 267 mode = "a"; 268 else 269 mode = "w"; 270 if (strcmp(modules, "stdout") == 0) { 271 debug_file = stdout; 272 goto debug_setbuf; 273 } 274 if (strcmp(modules, "stderr") == 0) { 275 debug_file = stderr; 276 goto debug_setbuf; 277 } 278 len = strlen(modules); 279 fname = malloc(len + 20); 280 memcpy(fname, modules, len + 1); 281 /* Let the filename be modified by the pid */ 282 if (strcmp(fname + len - 3, ".%d") == 0) 283 snprintf(fname + len - 2, 20, "%d", getpid()); 284 debug_file = fopen(fname, mode); 285 if (!debug_file) { 286 fprintf(stderr, "Cannot open debug file %s\n", 287 fname); 288 usage(); 289 } 290 free(fname); 291 goto debug_setbuf; 292 default: 293 (void)fprintf(stderr, 294 "%s: illegal argument to d option -- %c\n", 295 progname, *modules); 296 usage(); 297 } 298 } 299 debug_setbuf: 300 /* 301 * Make the debug_file unbuffered, and make 302 * stdout line buffered (unless debugfile == stdout). 303 */ 304 setvbuf(debug_file, NULL, _IONBF, 0); 305 if (debug_file != stdout) { 306 setvbuf(stdout, NULL, _IOLBF, 0); 307 } 308 } 309 310 /*- 311 * MainParseArgs -- 312 * Parse a given argument vector. Called from main() and from 313 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 314 * 315 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 316 * 317 * Results: 318 * None 319 * 320 * Side Effects: 321 * Various global and local flags will be set depending on the flags 322 * given 323 */ 324 static void 325 MainParseArgs(int argc, char **argv) 326 { 327 char *p; 328 int c = '?'; 329 int arginc; 330 char *argvalue; 331 const char *getopt_def; 332 char *optscan; 333 Boolean inOption, dashDash = FALSE; 334 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 335 336 #define OPTFLAGS "BD:I:J:NST:V:WXd:ef:ij:km:nqrst" 337 /* Can't actually use getopt(3) because rescanning is not portable */ 338 339 getopt_def = OPTFLAGS; 340 rearg: 341 inOption = FALSE; 342 optscan = NULL; 343 while(argc > 1) { 344 char *getopt_spec; 345 if(!inOption) 346 optscan = argv[1]; 347 c = *optscan++; 348 arginc = 0; 349 if(inOption) { 350 if(c == '\0') { 351 ++argv; 352 --argc; 353 inOption = FALSE; 354 continue; 355 } 356 } else { 357 if (c != '-' || dashDash) 358 break; 359 inOption = TRUE; 360 c = *optscan++; 361 } 362 /* '-' found at some earlier point */ 363 getopt_spec = strchr(getopt_def, c); 364 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 365 /* -<something> found, and <something> should have an arg */ 366 inOption = FALSE; 367 arginc = 1; 368 argvalue = optscan; 369 if(*argvalue == '\0') { 370 if (argc < 3) 371 goto noarg; 372 argvalue = argv[2]; 373 arginc = 2; 374 } 375 } else { 376 argvalue = NULL; 377 } 378 switch(c) { 379 case '\0': 380 arginc = 1; 381 inOption = FALSE; 382 break; 383 case 'B': 384 compatMake = TRUE; 385 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 386 break; 387 case 'D': 388 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 389 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 390 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 391 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 392 break; 393 case 'I': 394 if (argvalue == NULL) goto noarg; 395 Parse_AddIncludeDir(argvalue); 396 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 397 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 398 break; 399 case 'J': 400 if (argvalue == NULL) goto noarg; 401 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 402 (void)fprintf(stderr, 403 "%s: internal error -- J option malformed (%s)\n", 404 progname, argvalue); 405 usage(); 406 } 407 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 408 (fcntl(jp_1, F_GETFD, 0) < 0)) { 409 #if 0 410 (void)fprintf(stderr, 411 "%s: ###### warning -- J descriptors were closed!\n", 412 progname); 413 exit(2); 414 #endif 415 jp_0 = -1; 416 jp_1 = -1; 417 compatMake = TRUE; 418 } else { 419 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 420 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 421 jobServer = TRUE; 422 } 423 break; 424 case 'N': 425 noExecute = TRUE; 426 noRecursiveExecute = TRUE; 427 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 428 break; 429 case 'S': 430 keepgoing = FALSE; 431 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 432 break; 433 case 'T': 434 if (argvalue == NULL) goto noarg; 435 tracefile = bmake_strdup(argvalue); 436 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 437 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 438 break; 439 case 'V': 440 if (argvalue == NULL) goto noarg; 441 printVars = TRUE; 442 (void)Lst_AtEnd(variables, argvalue); 443 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 444 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 445 break; 446 case 'W': 447 parseWarnFatal = TRUE; 448 break; 449 case 'X': 450 varNoExportEnv = TRUE; 451 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 452 break; 453 case 'd': 454 if (argvalue == NULL) goto noarg; 455 /* If '-d-opts' don't pass to children */ 456 if (argvalue[0] == '-') 457 argvalue++; 458 else { 459 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 460 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 461 } 462 parse_debug_options(argvalue); 463 break; 464 case 'e': 465 checkEnvFirst = TRUE; 466 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 467 break; 468 case 'f': 469 if (argvalue == NULL) goto noarg; 470 (void)Lst_AtEnd(makefiles, argvalue); 471 break; 472 case 'i': 473 ignoreErrors = TRUE; 474 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 475 break; 476 case 'j': 477 if (argvalue == NULL) goto noarg; 478 forceJobs = TRUE; 479 maxJobs = strtol(argvalue, &p, 0); 480 if (*p != '\0' || maxJobs < 1) { 481 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 482 progname); 483 exit(1); 484 } 485 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 486 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 487 maxJobTokens = maxJobs; 488 break; 489 case 'k': 490 keepgoing = TRUE; 491 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 492 break; 493 case 'm': 494 if (argvalue == NULL) goto noarg; 495 /* look for magic parent directory search string */ 496 if (strncmp(".../", argvalue, 4) == 0) { 497 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 498 found_path, sizeof(found_path))) 499 break; /* nothing doing */ 500 (void)Dir_AddDir(sysIncPath, found_path); 501 502 } else { 503 (void)Dir_AddDir(sysIncPath, argvalue); 504 } 505 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 506 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 507 break; 508 case 'n': 509 noExecute = TRUE; 510 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 511 break; 512 case 'q': 513 queryFlag = TRUE; 514 /* Kind of nonsensical, wot? */ 515 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 516 break; 517 case 'r': 518 noBuiltins = TRUE; 519 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 520 break; 521 case 's': 522 beSilent = TRUE; 523 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 524 break; 525 case 't': 526 touchFlag = TRUE; 527 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 528 break; 529 case '-': 530 dashDash = TRUE; 531 break; 532 default: 533 case '?': 534 usage(); 535 } 536 argv += arginc; 537 argc -= arginc; 538 } 539 540 oldVars = TRUE; 541 542 /* 543 * See if the rest of the arguments are variable assignments and 544 * perform them if so. Else take them to be targets and stuff them 545 * on the end of the "create" list. 546 */ 547 for (; argc > 1; ++argv, --argc) 548 if (Parse_IsVar(argv[1])) { 549 Parse_DoVar(argv[1], VAR_CMD); 550 } else { 551 if (!*argv[1]) 552 Punt("illegal (null) argument."); 553 if (*argv[1] == '-' && !dashDash) 554 goto rearg; 555 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 556 } 557 558 return; 559 noarg: 560 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 561 progname, c); 562 usage(); 563 } 564 565 /*- 566 * Main_ParseArgLine -- 567 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 568 * is encountered and by main() when reading the .MAKEFLAGS envariable. 569 * Takes a line of arguments and breaks it into its 570 * component words and passes those words and the number of them to the 571 * MainParseArgs function. 572 * The line should have all its leading whitespace removed. 573 * 574 * Input: 575 * line Line to fracture 576 * 577 * Results: 578 * None 579 * 580 * Side Effects: 581 * Only those that come from the various arguments. 582 */ 583 void 584 Main_ParseArgLine(const char *line) 585 { 586 char **argv; /* Manufactured argument vector */ 587 int argc; /* Number of arguments in argv */ 588 char *args; /* Space used by the args */ 589 char *buf, *p1; 590 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 591 size_t len; 592 593 if (line == NULL) 594 return; 595 for (; *line == ' '; ++line) 596 continue; 597 if (!*line) 598 return; 599 600 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 601 (void)snprintf(buf, len, "%s %s", argv0, line); 602 if (p1) 603 free(p1); 604 605 argv = brk_string(buf, &argc, TRUE, &args); 606 if (argv == NULL) { 607 Error("Unterminated quoted string [%s]", buf); 608 free(buf); 609 return; 610 } 611 free(buf); 612 MainParseArgs(argc, argv); 613 614 free(args); 615 free(argv); 616 } 617 618 Boolean 619 Main_SetObjdir(const char *path) 620 { 621 struct stat sb; 622 char *p = NULL; 623 char buf[MAXPATHLEN + 1]; 624 Boolean rc = FALSE; 625 626 /* expand variable substitutions */ 627 if (strchr(path, '$') != 0) { 628 snprintf(buf, MAXPATHLEN, "%s", path); 629 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 630 } 631 632 if (path[0] != '/') { 633 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 634 path = buf; 635 } 636 637 /* look for the directory and try to chdir there */ 638 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 639 if (chdir(path)) { 640 (void)fprintf(stderr, "make warning: %s: %s.\n", 641 path, strerror(errno)); 642 } else { 643 strncpy(objdir, path, MAXPATHLEN); 644 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 645 setenv("PWD", objdir, 1); 646 Dir_InitDot(); 647 rc = TRUE; 648 } 649 } 650 651 if (p) 652 free(p); 653 return rc; 654 } 655 656 /*- 657 * ReadAllMakefiles -- 658 * wrapper around ReadMakefile() to read all. 659 * 660 * Results: 661 * TRUE if ok, FALSE on error 662 */ 663 static int 664 ReadAllMakefiles(const void *p, const void *q) 665 { 666 return (ReadMakefile(p, q) == 0); 667 } 668 669 #ifdef SIGINFO 670 /*ARGSUSED*/ 671 static void 672 siginfo(int signo) 673 { 674 char dir[MAXPATHLEN]; 675 char str[2 * MAXPATHLEN]; 676 int len; 677 if (getcwd(dir, sizeof(dir)) == NULL) 678 return; 679 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 680 if (len > 0) 681 (void)write(STDERR_FILENO, str, (size_t)len); 682 } 683 #endif 684 685 /*- 686 * main -- 687 * The main function, for obvious reasons. Initializes variables 688 * and a few modules, then parses the arguments give it in the 689 * environment and on the command line. Reads the system makefile 690 * followed by either Makefile, makefile or the file given by the 691 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 692 * flags it has received by then uses either the Make or the Compat 693 * module to create the initial list of targets. 694 * 695 * Results: 696 * If -q was given, exits -1 if anything was out-of-date. Else it exits 697 * 0. 698 * 699 * Side Effects: 700 * The program exits when done. Targets are created. etc. etc. etc. 701 */ 702 int 703 main(int argc, char **argv) 704 { 705 Lst targs; /* target nodes to create -- passed to Make_Init */ 706 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 707 struct stat sb, sa; 708 char *p1, *path, *pwd; 709 char mdpath[MAXPATHLEN]; 710 char *machine = getenv("MACHINE"); 711 const char *machine_arch = getenv("MACHINE_ARCH"); 712 char *syspath = getenv("MAKESYSPATH"); 713 Lst sysMkPath; /* Path of sys.mk */ 714 char *cp = NULL, *start; 715 /* avoid faults on read-only strings */ 716 static char defsyspath[] = _PATH_DEFSYSPATH; 717 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 718 struct timeval rightnow; /* to initialize random seed */ 719 #ifdef MAKE_NATIVE 720 struct utsname utsname; 721 #endif 722 723 /* default to writing debug to stderr */ 724 debug_file = stderr; 725 726 #ifdef SIGINFO 727 (void)signal(SIGINFO, siginfo); 728 #endif 729 /* 730 * Set the seed to produce a different random sequence 731 * on each program execution. 732 */ 733 gettimeofday(&rightnow, NULL); 734 srandom(rightnow.tv_sec + rightnow.tv_usec); 735 736 if ((progname = strrchr(argv[0], '/')) != NULL) 737 progname++; 738 else 739 progname = argv[0]; 740 #ifdef RLIMIT_NOFILE 741 /* 742 * get rid of resource limit on file descriptors 743 */ 744 { 745 struct rlimit rl; 746 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 747 rl.rlim_cur != rl.rlim_max) { 748 rl.rlim_cur = rl.rlim_max; 749 (void)setrlimit(RLIMIT_NOFILE, &rl); 750 } 751 } 752 #endif 753 /* 754 * Find where we are and take care of PWD for the automounter... 755 * All this code is so that we know where we are when we start up 756 * on a different machine with pmake. 757 */ 758 if (getcwd(curdir, MAXPATHLEN) == NULL) { 759 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 760 exit(2); 761 } 762 763 if (stat(curdir, &sa) == -1) { 764 (void)fprintf(stderr, "%s: %s: %s.\n", 765 progname, curdir, strerror(errno)); 766 exit(2); 767 } 768 769 /* 770 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 771 * since the value of curdir can very depending on how we got 772 * here. Ie sitting at a shell prompt (shell that provides $PWD) 773 * or via subdir.mk in which case its likely a shell which does 774 * not provide it. 775 * So, to stop it breaking this case only, we ignore PWD if 776 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 777 */ 778 if ((pwd = getenv("PWD")) != NULL && getenv("MAKEOBJDIRPREFIX") == NULL) { 779 const char *makeobjdir = getenv("MAKEOBJDIR"); 780 781 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 782 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 783 sa.st_dev == sb.st_dev) 784 (void)strncpy(curdir, pwd, MAXPATHLEN); 785 } 786 } 787 788 /* 789 * Get the name of this type of MACHINE from utsname 790 * so we can share an executable for similar machines. 791 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 792 * 793 * Note that both MACHINE and MACHINE_ARCH are decided at 794 * run-time. 795 */ 796 if (!machine) { 797 #ifdef MAKE_NATIVE 798 if (uname(&utsname) == -1) { 799 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 800 strerror(errno)); 801 exit(2); 802 } 803 machine = utsname.machine; 804 #else 805 #ifdef MAKE_MACHINE 806 machine = MAKE_MACHINE; 807 #else 808 machine = "unknown"; 809 #endif 810 #endif 811 } 812 813 if (!machine_arch) { 814 #ifndef MACHINE_ARCH 815 #ifdef MAKE_MACHINE_ARCH 816 machine_arch = MAKE_MACHINE_ARCH; 817 #else 818 machine_arch = "unknown"; 819 #endif 820 #else 821 machine_arch = MACHINE_ARCH; 822 #endif 823 } 824 825 /* 826 * Just in case MAKEOBJDIR wants us to do something tricky. 827 */ 828 Var_Init(); /* Initialize the lists of variables for 829 * parsing arguments */ 830 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 831 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 832 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 833 #ifdef MAKE_VERSION 834 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 835 #endif 836 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 837 838 /* 839 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 840 * MAKEOBJDIR is set in the environment, try only that value 841 * and fall back to .CURDIR if it does not exist. 842 * 843 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 844 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 845 * of these paths exist, just use .CURDIR. 846 */ 847 Dir_Init(curdir); 848 (void)Main_SetObjdir(curdir); 849 850 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 851 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 852 (void)Main_SetObjdir(mdpath); 853 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 854 (void)Main_SetObjdir(path); 855 } else { 856 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 857 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 858 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 859 _PATH_OBJDIRPREFIX, curdir); 860 (void)Main_SetObjdir(mdpath); 861 } 862 } 863 864 create = Lst_Init(FALSE); 865 makefiles = Lst_Init(FALSE); 866 printVars = FALSE; 867 variables = Lst_Init(FALSE); 868 beSilent = FALSE; /* Print commands as executed */ 869 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 870 noExecute = FALSE; /* Execute all commands */ 871 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 872 keepgoing = FALSE; /* Stop on error */ 873 allPrecious = FALSE; /* Remove targets when interrupted */ 874 queryFlag = FALSE; /* This is not just a check-run */ 875 noBuiltins = FALSE; /* Read the built-in rules */ 876 touchFlag = FALSE; /* Actually update targets */ 877 debug = 0; /* No debug verbosity, please. */ 878 jobsRunning = FALSE; 879 880 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 881 maxJobTokens = maxJobs; 882 compatMake = FALSE; /* No compat mode */ 883 884 885 /* 886 * Initialize the parsing, directory and variable modules to prepare 887 * for the reading of inclusion paths and variable settings on the 888 * command line 889 */ 890 891 /* 892 * Initialize various variables. 893 * MAKE also gets this name, for compatibility 894 * .MAKEFLAGS gets set to the empty string just in case. 895 * MFLAGS also gets initialized empty, for compatibility. 896 */ 897 Parse_Init(); 898 Var_Set("MAKE", argv[0], VAR_GLOBAL, 0); 899 Var_Set(".MAKE", argv[0], VAR_GLOBAL, 0); 900 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 901 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 902 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 903 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 904 905 /* 906 * Set some other useful macros 907 */ 908 { 909 char tmp[64]; 910 911 snprintf(tmp, sizeof(tmp), "%u", getpid()); 912 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 913 snprintf(tmp, sizeof(tmp), "%u", getppid()); 914 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 915 } 916 Job_SetPrefix(); 917 918 /* 919 * First snag any flags out of the MAKE environment variable. 920 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 921 * in a different format). 922 */ 923 #ifdef POSIX 924 Main_ParseArgLine(getenv("MAKEFLAGS")); 925 #else 926 Main_ParseArgLine(getenv("MAKE")); 927 #endif 928 929 MainParseArgs(argc, argv); 930 931 /* 932 * Be compatible if user did not specify -j and did not explicitly 933 * turned compatibility on 934 */ 935 if (!compatMake && !forceJobs) { 936 compatMake = TRUE; 937 } 938 939 /* 940 * Initialize archive, target and suffix modules in preparation for 941 * parsing the makefile(s) 942 */ 943 Arch_Init(); 944 Targ_Init(); 945 Suff_Init(); 946 Trace_Init(tracefile); 947 948 DEFAULT = NULL; 949 (void)time(&now); 950 951 Trace_Log(MAKESTART, NULL); 952 953 /* 954 * Set up the .TARGETS variable to contain the list of targets to be 955 * created. If none specified, make the variable empty -- the parser 956 * will fill the thing in with the default or .MAIN target. 957 */ 958 if (!Lst_IsEmpty(create)) { 959 LstNode ln; 960 961 for (ln = Lst_First(create); ln != NULL; 962 ln = Lst_Succ(ln)) { 963 char *name = (char *)Lst_Datum(ln); 964 965 Var_Append(".TARGETS", name, VAR_GLOBAL); 966 } 967 } else 968 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 969 970 971 /* 972 * If no user-supplied system path was given (through the -m option) 973 * add the directories from the DEFSYSPATH (more than one may be given 974 * as dir1:...:dirn) to the system include path. 975 */ 976 if (syspath == NULL || *syspath == '\0') 977 syspath = defsyspath; 978 else 979 syspath = bmake_strdup(syspath); 980 981 for (start = syspath; *start != '\0'; start = cp) { 982 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 983 continue; 984 if (*cp == ':') { 985 *cp++ = '\0'; 986 } 987 /* look for magic parent directory search string */ 988 if (strncmp(".../", start, 4) != 0) { 989 (void)Dir_AddDir(defIncPath, start); 990 } else { 991 if (Dir_FindHereOrAbove(curdir, start+4, 992 found_path, sizeof(found_path))) { 993 (void)Dir_AddDir(defIncPath, found_path); 994 } 995 } 996 } 997 if (syspath != defsyspath) 998 free(syspath); 999 1000 /* 1001 * Read in the built-in rules first, followed by the specified 1002 * makefile, if it was (makefile != NULL), or the default 1003 * makefile and Makefile, in that order, if it wasn't. 1004 */ 1005 if (!noBuiltins) { 1006 LstNode ln; 1007 1008 sysMkPath = Lst_Init(FALSE); 1009 Dir_Expand(_PATH_DEFSYSMK, 1010 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1011 sysMkPath); 1012 if (Lst_IsEmpty(sysMkPath)) 1013 Fatal("%s: no system rules (%s).", progname, 1014 _PATH_DEFSYSMK); 1015 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1016 if (ln == NULL) 1017 Fatal("%s: cannot open %s.", progname, 1018 (char *)Lst_Datum(ln)); 1019 } 1020 1021 if (!Lst_IsEmpty(makefiles)) { 1022 LstNode ln; 1023 1024 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1025 if (ln != NULL) 1026 Fatal("%s: cannot open %s.", progname, 1027 (char *)Lst_Datum(ln)); 1028 } else if (ReadMakefile("makefile", NULL) != 0) 1029 (void)ReadMakefile("Makefile", NULL); 1030 1031 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1032 if (!noBuiltins || !printVars) { 1033 doing_depend = TRUE; 1034 (void)ReadMakefile(".depend", NULL); 1035 doing_depend = FALSE; 1036 } 1037 1038 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1039 if (p1) 1040 free(p1); 1041 1042 if (!compatMake) 1043 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1044 if (DEBUG(JOB)) 1045 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1046 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1047 1048 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1049 1050 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1051 1052 1053 /* 1054 * For compatibility, look at the directories in the VPATH variable 1055 * and add them to the search path, if the variable is defined. The 1056 * variable's value is in the same format as the PATH envariable, i.e. 1057 * <directory>:<directory>:<directory>... 1058 */ 1059 if (Var_Exists("VPATH", VAR_CMD)) { 1060 char *vpath, savec; 1061 /* 1062 * GCC stores string constants in read-only memory, but 1063 * Var_Subst will want to write this thing, so store it 1064 * in an array 1065 */ 1066 static char VPATH[] = "${VPATH}"; 1067 1068 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1069 path = vpath; 1070 do { 1071 /* skip to end of directory */ 1072 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1073 continue; 1074 /* Save terminator character so know when to stop */ 1075 savec = *cp; 1076 *cp = '\0'; 1077 /* Add directory to search path */ 1078 (void)Dir_AddDir(dirSearchPath, path); 1079 *cp = savec; 1080 path = cp + 1; 1081 } while (savec == ':'); 1082 free(vpath); 1083 } 1084 1085 /* 1086 * Now that all search paths have been read for suffixes et al, it's 1087 * time to add the default search path to their lists... 1088 */ 1089 Suff_DoPaths(); 1090 1091 /* 1092 * Propagate attributes through :: dependency lists. 1093 */ 1094 Targ_Propagate(); 1095 1096 /* print the initial graph, if the user requested it */ 1097 if (DEBUG(GRAPH1)) 1098 Targ_PrintGraph(1); 1099 1100 /* print the values of any variables requested by the user */ 1101 if (printVars) { 1102 LstNode ln; 1103 1104 for (ln = Lst_First(variables); ln != NULL; 1105 ln = Lst_Succ(ln)) { 1106 char *var = (char *)Lst_Datum(ln); 1107 char *value; 1108 1109 if (strchr(var, '$')) { 1110 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1111 } else { 1112 value = Var_Value(var, VAR_GLOBAL, &p1); 1113 } 1114 printf("%s\n", value ? value : ""); 1115 if (p1) 1116 free(p1); 1117 } 1118 } else { 1119 /* 1120 * Have now read the entire graph and need to make a list of 1121 * targets to create. If none was given on the command line, 1122 * we consult the parsing module to find the main target(s) 1123 * to create. 1124 */ 1125 if (Lst_IsEmpty(create)) 1126 targs = Parse_MainName(); 1127 else 1128 targs = Targ_FindList(create, TARG_CREATE); 1129 1130 if (!compatMake) { 1131 /* 1132 * Initialize job module before traversing the graph 1133 * now that any .BEGIN and .END targets have been read. 1134 * This is done only if the -q flag wasn't given 1135 * (to prevent the .BEGIN from being executed should 1136 * it exist). 1137 */ 1138 if (!queryFlag) { 1139 Job_Init(); 1140 jobsRunning = TRUE; 1141 } 1142 1143 /* Traverse the graph, checking on all the targets */ 1144 outOfDate = Make_Run(targs); 1145 } else { 1146 /* 1147 * Compat_Init will take care of creating all the 1148 * targets as well as initializing the module. 1149 */ 1150 Compat_Run(targs); 1151 } 1152 } 1153 1154 #ifdef CLEANUP 1155 Lst_Destroy(targs, NULL); 1156 Lst_Destroy(variables, NULL); 1157 Lst_Destroy(makefiles, NULL); 1158 Lst_Destroy(create, (FreeProc *)free); 1159 #endif 1160 1161 /* print the graph now it's been processed if the user requested it */ 1162 if (DEBUG(GRAPH2)) 1163 Targ_PrintGraph(2); 1164 1165 Trace_Log(MAKEEND, 0); 1166 1167 Suff_End(); 1168 Targ_End(); 1169 Arch_End(); 1170 Var_End(); 1171 Parse_End(); 1172 Dir_End(); 1173 Job_End(); 1174 Trace_End(); 1175 1176 return outOfDate ? 1 : 0; 1177 } 1178 1179 /*- 1180 * ReadMakefile -- 1181 * Open and parse the given makefile. 1182 * 1183 * Results: 1184 * 0 if ok. -1 if couldn't open file. 1185 * 1186 * Side Effects: 1187 * lots 1188 */ 1189 static int 1190 ReadMakefile(const void *p, const void *q __unused) 1191 { 1192 const char *fname = p; /* makefile to read */ 1193 int fd; 1194 size_t len = MAXPATHLEN; 1195 char *name, *path = bmake_malloc(len); 1196 int setMAKEFILE; 1197 1198 if (!strcmp(fname, "-")) { 1199 Parse_File("(stdin)", dup(fileno(stdin))); 1200 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1201 } else { 1202 setMAKEFILE = strcmp(fname, ".depend"); 1203 1204 /* if we've chdir'd, rebuild the path name */ 1205 if (strcmp(curdir, objdir) && *fname != '/') { 1206 size_t plen = strlen(curdir) + strlen(fname) + 2; 1207 if (len < plen) 1208 path = bmake_realloc(path, len = 2 * plen); 1209 1210 (void)snprintf(path, len, "%s/%s", curdir, fname); 1211 fd = open(path, O_RDONLY); 1212 if (fd != -1) { 1213 fname = path; 1214 goto found; 1215 } 1216 1217 /* If curdir failed, try objdir (ala .depend) */ 1218 plen = strlen(objdir) + strlen(fname) + 2; 1219 if (len < plen) 1220 path = bmake_realloc(path, len = 2 * plen); 1221 (void)snprintf(path, len, "%s/%s", objdir, fname); 1222 fd = open(path, O_RDONLY); 1223 if (fd != -1) { 1224 fname = path; 1225 goto found; 1226 } 1227 } else { 1228 fd = open(fname, O_RDONLY); 1229 if (fd != -1) 1230 goto found; 1231 } 1232 /* look in -I and system include directories. */ 1233 name = Dir_FindFile(fname, parseIncPath); 1234 if (!name) 1235 name = Dir_FindFile(fname, 1236 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1237 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1238 if (name) 1239 free(name); 1240 free(path); 1241 return(-1); 1242 } 1243 fname = name; 1244 /* 1245 * set the MAKEFILE variable desired by System V fans -- the 1246 * placement of the setting here means it gets set to the last 1247 * makefile specified, as it is set by SysV make. 1248 */ 1249 found: 1250 if (setMAKEFILE) 1251 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1252 Parse_File(fname, fd); 1253 } 1254 free(path); 1255 return(0); 1256 } 1257 1258 1259 /* 1260 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1261 * in situations that would not arrise with ./obj (links or not). 1262 * This tends to break things like: 1263 * 1264 * build: 1265 * ${MAKE} includes 1266 * 1267 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1268 * opposed to an argument) in a command line and if so returns 1269 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1270 * the Makefile hold true. 1271 * 1272 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1273 * 1274 * The chdir() only happens in the child process, and does nothing if 1275 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1276 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1277 * do nothing - to ensure historic semantics can be retained. 1278 */ 1279 static int Check_Cwd_Off = 0; 1280 1281 static char * 1282 Check_Cwd_av(int ac, char **av, int copy) 1283 { 1284 static char *make[4]; 1285 static char *cur_dir = NULL; 1286 char **mp; 1287 char *cp; 1288 int is_cmd, next_cmd; 1289 int i; 1290 int n; 1291 1292 if (Check_Cwd_Off) { 1293 if (DEBUG(CWD)) 1294 fprintf(debug_file, "check_cwd: check is off.\n"); 1295 return NULL; 1296 } 1297 1298 if (make[0] == NULL) { 1299 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1300 Check_Cwd_Off = 1; 1301 if (DEBUG(CWD)) 1302 fprintf(debug_file, "check_cwd: turning check off.\n"); 1303 return NULL; 1304 } 1305 1306 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1307 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1308 make[0] = make[1]; 1309 make[1] = NULL; 1310 } else 1311 ++make[0]; 1312 make[2] = NULL; 1313 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1314 } 1315 if (ac == 0 || av == NULL) { 1316 if (DEBUG(CWD)) 1317 fprintf(debug_file, "check_cwd: empty command.\n"); 1318 return NULL; /* initialization only */ 1319 } 1320 1321 if (getenv("MAKEOBJDIR") == NULL && 1322 getenv("MAKEOBJDIRPREFIX") == NULL) { 1323 if (DEBUG(CWD)) 1324 fprintf(debug_file, "check_cwd: no obj dirs.\n"); 1325 return NULL; 1326 } 1327 1328 1329 next_cmd = 1; 1330 for (i = 0; i < ac; ++i) { 1331 is_cmd = next_cmd; 1332 1333 n = strlen(av[i]); 1334 cp = &(av[i])[n - 1]; 1335 if (strspn(av[i], "|&;") == (size_t)n) { 1336 next_cmd = 1; 1337 continue; 1338 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1339 next_cmd = 1; 1340 if (copy) { 1341 do { 1342 *cp-- = '\0'; 1343 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1344 *cp == ')' || *cp == '}') ; 1345 } else { 1346 /* 1347 * XXX this should not happen. 1348 */ 1349 fprintf(stderr, "%s: WARNING: raw arg ends in shell meta '%s'\n", 1350 progname, av[i]); 1351 } 1352 } else 1353 next_cmd = 0; 1354 1355 cp = av[i]; 1356 if (*cp == ';' || *cp == '&' || *cp == '|') 1357 is_cmd = 1; 1358 1359 if (DEBUG(CWD)) 1360 fprintf(debug_file, "av[%d] == %s '%s'", 1361 i, (is_cmd) ? "cmd" : "arg", av[i]); 1362 if (is_cmd != 0) { 1363 if (*cp == '(' || *cp == '{' || 1364 *cp == ';' || *cp == '&' || *cp == '|') { 1365 do { 1366 ++cp; 1367 } while (*cp == '(' || *cp == '{' || 1368 *cp == ';' || *cp == '&' || *cp == '|'); 1369 if (*cp == '\0') { 1370 next_cmd = 1; 1371 continue; 1372 } 1373 } 1374 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1375 if (DEBUG(CWD)) 1376 fprintf(debug_file, " == cd, done.\n"); 1377 return NULL; 1378 } 1379 for (mp = make; *mp != NULL; ++mp) { 1380 n = strlen(*mp); 1381 if (strcmp(cp, *mp) == 0) { 1382 if (DEBUG(CWD)) 1383 fprintf(debug_file, " %s == '%s', chdir(%s)\n", 1384 cp, *mp, cur_dir); 1385 return cur_dir; 1386 } 1387 } 1388 } 1389 if (DEBUG(CWD)) 1390 fprintf(debug_file, "\n"); 1391 } 1392 return NULL; 1393 } 1394 1395 char * 1396 Check_Cwd_Cmd(const char *cmd) 1397 { 1398 char *cp, *bp; 1399 char **av; 1400 int ac; 1401 1402 if (Check_Cwd_Off) 1403 return NULL; 1404 1405 if (cmd) { 1406 av = brk_string(cmd, &ac, TRUE, &bp); 1407 if (DEBUG(CWD)) 1408 fprintf(debug_file, "splitting: '%s' -> %d words\n", 1409 cmd, ac); 1410 } else { 1411 ac = 0; 1412 av = NULL; 1413 bp = NULL; 1414 } 1415 cp = Check_Cwd_av(ac, av, 1); 1416 if (bp) 1417 free(bp); 1418 if (av) 1419 free(av); 1420 return cp; 1421 } 1422 1423 void 1424 Check_Cwd(const char **argv) 1425 { 1426 char *cp; 1427 int ac; 1428 1429 if (Check_Cwd_Off) 1430 return; 1431 1432 for (ac = 0; argv[ac] != NULL; ++ac) 1433 /* NOTHING */; 1434 if (ac == 3 && *argv[1] == '-') { 1435 cp = Check_Cwd_Cmd(argv[2]); 1436 } else { 1437 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1438 } 1439 if (cp) { 1440 chdir(cp); 1441 } 1442 } 1443 1444 /*- 1445 * Cmd_Exec -- 1446 * Execute the command in cmd, and return the output of that command 1447 * in a string. 1448 * 1449 * Results: 1450 * A string containing the output of the command, or the empty string 1451 * If errnum is not NULL, it contains the reason for the command failure 1452 * 1453 * Side Effects: 1454 * The string must be freed by the caller. 1455 */ 1456 char * 1457 Cmd_Exec(const char *cmd, const char **errnum) 1458 { 1459 const char *args[4]; /* Args for invoking the shell */ 1460 int fds[2]; /* Pipe streams */ 1461 int cpid; /* Child PID */ 1462 int pid; /* PID from wait() */ 1463 char *res; /* result */ 1464 int status; /* command exit status */ 1465 Buffer buf; /* buffer to store the result */ 1466 char *cp; 1467 int cc; 1468 1469 1470 *errnum = NULL; 1471 1472 if (!shellName) 1473 Shell_Init(); 1474 /* 1475 * Set up arguments for shell 1476 */ 1477 args[0] = shellName; 1478 args[1] = "-c"; 1479 args[2] = cmd; 1480 args[3] = NULL; 1481 1482 /* 1483 * Open a pipe for fetching its output 1484 */ 1485 if (pipe(fds) == -1) { 1486 *errnum = "Couldn't create pipe for \"%s\""; 1487 goto bad; 1488 } 1489 1490 /* 1491 * Fork 1492 */ 1493 switch (cpid = vfork()) { 1494 case 0: 1495 /* 1496 * Close input side of pipe 1497 */ 1498 (void)close(fds[0]); 1499 1500 /* 1501 * Duplicate the output stream to the shell's output, then 1502 * shut the extra thing down. Note we don't fetch the error 1503 * stream...why not? Why? 1504 */ 1505 (void)dup2(fds[1], 1); 1506 (void)close(fds[1]); 1507 1508 Var_ExportVars(); 1509 1510 (void)execv(shellPath, UNCONST(args)); 1511 _exit(1); 1512 /*NOTREACHED*/ 1513 1514 case -1: 1515 *errnum = "Couldn't exec \"%s\""; 1516 goto bad; 1517 1518 default: 1519 /* 1520 * No need for the writing half 1521 */ 1522 (void)close(fds[1]); 1523 1524 Buf_Init(&buf, 0); 1525 1526 do { 1527 char result[BUFSIZ]; 1528 cc = read(fds[0], result, sizeof(result)); 1529 if (cc > 0) 1530 Buf_AddBytes(&buf, cc, result); 1531 } 1532 while (cc > 0 || (cc == -1 && errno == EINTR)); 1533 1534 /* 1535 * Close the input side of the pipe. 1536 */ 1537 (void)close(fds[0]); 1538 1539 /* 1540 * Wait for the process to exit. 1541 */ 1542 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) 1543 continue; 1544 1545 cc = Buf_Size(&buf); 1546 res = Buf_Destroy(&buf, FALSE); 1547 1548 if (cc == 0) 1549 *errnum = "Couldn't read shell's output for \"%s\""; 1550 1551 if (status) 1552 *errnum = "\"%s\" returned non-zero status"; 1553 1554 /* 1555 * Null-terminate the result, convert newlines to spaces and 1556 * install it in the variable. 1557 */ 1558 res[cc] = '\0'; 1559 cp = &res[cc]; 1560 1561 if (cc > 0 && *--cp == '\n') { 1562 /* 1563 * A final newline is just stripped 1564 */ 1565 *cp-- = '\0'; 1566 } 1567 while (cp >= res) { 1568 if (*cp == '\n') { 1569 *cp = ' '; 1570 } 1571 cp--; 1572 } 1573 break; 1574 } 1575 return res; 1576 bad: 1577 res = bmake_malloc(1); 1578 *res = '\0'; 1579 return res; 1580 } 1581 1582 /*- 1583 * Error -- 1584 * Print an error message given its format. 1585 * 1586 * Results: 1587 * None. 1588 * 1589 * Side Effects: 1590 * The message is printed. 1591 */ 1592 /* VARARGS */ 1593 void 1594 Error(const char *fmt, ...) 1595 { 1596 va_list ap; 1597 FILE *err_file; 1598 1599 err_file = debug_file; 1600 if (err_file == stdout) 1601 err_file = stderr; 1602 for (;;) { 1603 va_start(ap, fmt); 1604 fprintf(err_file, "%s: ", progname); 1605 (void)vfprintf(err_file, fmt, ap); 1606 va_end(ap); 1607 (void)fprintf(err_file, "\n"); 1608 (void)fflush(err_file); 1609 if (err_file == stderr) 1610 break; 1611 err_file = stderr; 1612 } 1613 } 1614 1615 /*- 1616 * Fatal -- 1617 * Produce a Fatal error message. If jobs are running, waits for them 1618 * to finish. 1619 * 1620 * Results: 1621 * None 1622 * 1623 * Side Effects: 1624 * The program exits 1625 */ 1626 /* VARARGS */ 1627 void 1628 Fatal(const char *fmt, ...) 1629 { 1630 va_list ap; 1631 1632 va_start(ap, fmt); 1633 if (jobsRunning) 1634 Job_Wait(); 1635 1636 (void)vfprintf(stderr, fmt, ap); 1637 va_end(ap); 1638 (void)fprintf(stderr, "\n"); 1639 (void)fflush(stderr); 1640 1641 PrintOnError(NULL); 1642 1643 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1644 Targ_PrintGraph(2); 1645 Trace_Log(MAKEERROR, 0); 1646 exit(2); /* Not 1 so -q can distinguish error */ 1647 } 1648 1649 /* 1650 * Punt -- 1651 * Major exception once jobs are being created. Kills all jobs, prints 1652 * a message and exits. 1653 * 1654 * Results: 1655 * None 1656 * 1657 * Side Effects: 1658 * All children are killed indiscriminately and the program Lib_Exits 1659 */ 1660 /* VARARGS */ 1661 void 1662 Punt(const char *fmt, ...) 1663 { 1664 va_list ap; 1665 1666 va_start(ap, fmt); 1667 (void)fprintf(stderr, "%s: ", progname); 1668 (void)vfprintf(stderr, fmt, ap); 1669 va_end(ap); 1670 (void)fprintf(stderr, "\n"); 1671 (void)fflush(stderr); 1672 1673 PrintOnError(NULL); 1674 1675 DieHorribly(); 1676 } 1677 1678 /*- 1679 * DieHorribly -- 1680 * Exit without giving a message. 1681 * 1682 * Results: 1683 * None 1684 * 1685 * Side Effects: 1686 * A big one... 1687 */ 1688 void 1689 DieHorribly(void) 1690 { 1691 if (jobsRunning) 1692 Job_AbortAll(); 1693 if (DEBUG(GRAPH2)) 1694 Targ_PrintGraph(2); 1695 Trace_Log(MAKEERROR, 0); 1696 exit(2); /* Not 1, so -q can distinguish error */ 1697 } 1698 1699 /* 1700 * Finish -- 1701 * Called when aborting due to errors in child shell to signal 1702 * abnormal exit. 1703 * 1704 * Results: 1705 * None 1706 * 1707 * Side Effects: 1708 * The program exits 1709 */ 1710 void 1711 Finish(int errors) 1712 /* number of errors encountered in Make_Make */ 1713 { 1714 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1715 } 1716 1717 /* 1718 * enunlink -- 1719 * Remove a file carefully, avoiding directories. 1720 */ 1721 int 1722 eunlink(const char *file) 1723 { 1724 struct stat st; 1725 1726 if (lstat(file, &st) == -1) 1727 return -1; 1728 1729 if (S_ISDIR(st.st_mode)) { 1730 errno = EISDIR; 1731 return -1; 1732 } 1733 return unlink(file); 1734 } 1735 1736 /* 1737 * execError -- 1738 * Print why exec failed, avoiding stdio. 1739 */ 1740 void 1741 execError(const char *af, const char *av) 1742 { 1743 #ifdef USE_IOVEC 1744 int i = 0; 1745 struct iovec iov[8]; 1746 #define IOADD(s) \ 1747 (void)(iov[i].iov_base = UNCONST(s), \ 1748 iov[i].iov_len = strlen(iov[i].iov_base), \ 1749 i++) 1750 #else 1751 #define IOADD(void)write(2, s, strlen(s)) 1752 #endif 1753 1754 IOADD(progname); 1755 IOADD(": "); 1756 IOADD(af); 1757 IOADD("("); 1758 IOADD(av); 1759 IOADD(") failed ("); 1760 IOADD(strerror(errno)); 1761 IOADD(")\n"); 1762 1763 #ifdef USE_IOVEC 1764 (void)writev(2, iov, 8); 1765 #endif 1766 } 1767 1768 /* 1769 * usage -- 1770 * exit with usage message 1771 */ 1772 static void 1773 usage(void) 1774 { 1775 (void)fprintf(stderr, 1776 "usage: %s [-BeikNnqrstWX] [-D variable] [-d flags] [-f makefile]\n\ 1777 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1778 [-V variable] [variable=value] [target ...]\n", progname); 1779 exit(2); 1780 } 1781 1782 1783 int 1784 PrintAddr(void *a, void *b) 1785 { 1786 printf("%lx ", (unsigned long) a); 1787 return b ? 0 : 0; 1788 } 1789 1790 1791 1792 void 1793 PrintOnError(const char *s) 1794 { 1795 char tmp[64]; 1796 char *cp; 1797 1798 if (s) 1799 printf("%s", s); 1800 1801 printf("\n%s: stopped in %s\n", progname, curdir); 1802 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1803 sizeof(tmp) - 1); 1804 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1805 if (cp) { 1806 if (*cp) 1807 printf("%s", cp); 1808 free(cp); 1809 } 1810 } 1811 1812 void 1813 Main_ExportMAKEFLAGS(Boolean first) 1814 { 1815 static int once = 1; 1816 char tmp[64]; 1817 char *s; 1818 1819 if (once != first) 1820 return; 1821 once = 0; 1822 1823 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1824 sizeof(tmp)); 1825 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1826 if (s && *s) { 1827 #ifdef POSIX 1828 setenv("MAKEFLAGS", s, 1); 1829 #else 1830 setenv("MAKE", s, 1); 1831 #endif 1832 } 1833 } 1834