main.c revision 1.200
1 /* $NetBSD: main.c,v 1.200 2012/06/12 19:21:51 joerg 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 1.200 2012/06/12 19:21:51 joerg 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 1.200 2012/06/12 19:21:51 joerg 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) MAKE_ATTR_DEAD; 182 183 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 184 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 185 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 186 char *progname; /* the program name */ 187 char *makeDependfile; 188 pid_t myPid; 189 190 Boolean forceJobs = FALSE; 191 192 extern Lst parseIncPath; 193 194 static void 195 parse_debug_options(const char *argvalue) 196 { 197 const char *modules; 198 const char *mode; 199 char *fname; 200 int len; 201 202 for (modules = argvalue; *modules; ++modules) { 203 switch (*modules) { 204 case 'A': 205 debug = ~0; 206 break; 207 case 'a': 208 debug |= DEBUG_ARCH; 209 break; 210 case 'C': 211 debug |= DEBUG_CWD; 212 break; 213 case 'c': 214 debug |= DEBUG_COND; 215 break; 216 case 'd': 217 debug |= DEBUG_DIR; 218 break; 219 case 'e': 220 debug |= DEBUG_ERROR; 221 break; 222 case 'f': 223 debug |= DEBUG_FOR; 224 break; 225 case 'g': 226 if (modules[1] == '1') { 227 debug |= DEBUG_GRAPH1; 228 ++modules; 229 } 230 else if (modules[1] == '2') { 231 debug |= DEBUG_GRAPH2; 232 ++modules; 233 } 234 else if (modules[1] == '3') { 235 debug |= DEBUG_GRAPH3; 236 ++modules; 237 } 238 break; 239 case 'j': 240 debug |= DEBUG_JOB; 241 break; 242 case 'l': 243 debug |= DEBUG_LOUD; 244 break; 245 case 'M': 246 debug |= DEBUG_META; 247 break; 248 case 'm': 249 debug |= DEBUG_MAKE; 250 break; 251 case 'n': 252 debug |= DEBUG_SCRIPT; 253 break; 254 case 'p': 255 debug |= DEBUG_PARSE; 256 break; 257 case 's': 258 debug |= DEBUG_SUFF; 259 break; 260 case 't': 261 debug |= DEBUG_TARG; 262 break; 263 case 'v': 264 debug |= DEBUG_VAR; 265 break; 266 case 'x': 267 debug |= DEBUG_SHELL; 268 break; 269 case 'F': 270 if (debug_file != stdout && debug_file != stderr) 271 fclose(debug_file); 272 if (*++modules == '+') { 273 modules++; 274 mode = "a"; 275 } else 276 mode = "w"; 277 if (strcmp(modules, "stdout") == 0) { 278 debug_file = stdout; 279 goto debug_setbuf; 280 } 281 if (strcmp(modules, "stderr") == 0) { 282 debug_file = stderr; 283 goto debug_setbuf; 284 } 285 len = strlen(modules); 286 fname = malloc(len + 20); 287 memcpy(fname, modules, len + 1); 288 /* Let the filename be modified by the pid */ 289 if (strcmp(fname + len - 3, ".%d") == 0) 290 snprintf(fname + len - 2, 20, "%d", getpid()); 291 debug_file = fopen(fname, mode); 292 if (!debug_file) { 293 fprintf(stderr, "Cannot open debug file %s\n", 294 fname); 295 usage(); 296 } 297 free(fname); 298 goto debug_setbuf; 299 default: 300 (void)fprintf(stderr, 301 "%s: illegal argument to d option -- %c\n", 302 progname, *modules); 303 usage(); 304 } 305 } 306 debug_setbuf: 307 /* 308 * Make the debug_file unbuffered, and make 309 * stdout line buffered (unless debugfile == stdout). 310 */ 311 setvbuf(debug_file, NULL, _IONBF, 0); 312 if (debug_file != stdout) { 313 setvbuf(stdout, NULL, _IOLBF, 0); 314 } 315 } 316 317 /*- 318 * MainParseArgs -- 319 * Parse a given argument vector. Called from main() and from 320 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 321 * 322 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 323 * 324 * Results: 325 * None 326 * 327 * Side Effects: 328 * Various global and local flags will be set depending on the flags 329 * given 330 */ 331 static void 332 MainParseArgs(int argc, char **argv) 333 { 334 char *p; 335 int c = '?'; 336 int arginc; 337 char *argvalue; 338 const char *getopt_def; 339 char *optscan; 340 Boolean inOption, dashDash = FALSE; 341 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 342 343 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst" 344 /* Can't actually use getopt(3) because rescanning is not portable */ 345 346 getopt_def = OPTFLAGS; 347 rearg: 348 inOption = FALSE; 349 optscan = NULL; 350 while(argc > 1) { 351 char *getopt_spec; 352 if(!inOption) 353 optscan = argv[1]; 354 c = *optscan++; 355 arginc = 0; 356 if(inOption) { 357 if(c == '\0') { 358 ++argv; 359 --argc; 360 inOption = FALSE; 361 continue; 362 } 363 } else { 364 if (c != '-' || dashDash) 365 break; 366 inOption = TRUE; 367 c = *optscan++; 368 } 369 /* '-' found at some earlier point */ 370 getopt_spec = strchr(getopt_def, c); 371 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 372 /* -<something> found, and <something> should have an arg */ 373 inOption = FALSE; 374 arginc = 1; 375 argvalue = optscan; 376 if(*argvalue == '\0') { 377 if (argc < 3) 378 goto noarg; 379 argvalue = argv[2]; 380 arginc = 2; 381 } 382 } else { 383 argvalue = NULL; 384 } 385 switch(c) { 386 case '\0': 387 arginc = 1; 388 inOption = FALSE; 389 break; 390 case 'B': 391 compatMake = TRUE; 392 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 393 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 394 break; 395 case 'C': 396 if (chdir(argvalue) == -1) { 397 (void)fprintf(stderr, 398 "%s: chdir %s: %s\n", 399 progname, argvalue, 400 strerror(errno)); 401 exit(1); 402 } 403 if (getcwd(curdir, MAXPATHLEN) == NULL) { 404 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 405 exit(2); 406 } 407 ignorePWD = TRUE; 408 break; 409 case 'D': 410 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 411 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 412 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 413 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 414 break; 415 case 'I': 416 if (argvalue == NULL) goto noarg; 417 Parse_AddIncludeDir(argvalue); 418 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 419 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 420 break; 421 case 'J': 422 if (argvalue == NULL) goto noarg; 423 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 424 (void)fprintf(stderr, 425 "%s: internal error -- J option malformed (%s)\n", 426 progname, argvalue); 427 usage(); 428 } 429 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 430 (fcntl(jp_1, F_GETFD, 0) < 0)) { 431 #if 0 432 (void)fprintf(stderr, 433 "%s: ###### warning -- J descriptors were closed!\n", 434 progname); 435 exit(2); 436 #endif 437 jp_0 = -1; 438 jp_1 = -1; 439 compatMake = TRUE; 440 } else { 441 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 442 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 443 jobServer = TRUE; 444 } 445 break; 446 case 'N': 447 noExecute = TRUE; 448 noRecursiveExecute = TRUE; 449 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 450 break; 451 case 'S': 452 keepgoing = FALSE; 453 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 454 break; 455 case 'T': 456 if (argvalue == NULL) goto noarg; 457 tracefile = bmake_strdup(argvalue); 458 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 459 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 460 break; 461 case 'V': 462 if (argvalue == NULL) goto noarg; 463 printVars = TRUE; 464 (void)Lst_AtEnd(variables, argvalue); 465 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 466 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 467 break; 468 case 'W': 469 parseWarnFatal = TRUE; 470 break; 471 case 'X': 472 varNoExportEnv = TRUE; 473 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 474 break; 475 case 'd': 476 if (argvalue == NULL) goto noarg; 477 /* If '-d-opts' don't pass to children */ 478 if (argvalue[0] == '-') 479 argvalue++; 480 else { 481 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 482 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 483 } 484 parse_debug_options(argvalue); 485 break; 486 case 'e': 487 checkEnvFirst = TRUE; 488 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 489 break; 490 case 'f': 491 if (argvalue == NULL) goto noarg; 492 (void)Lst_AtEnd(makefiles, argvalue); 493 break; 494 case 'i': 495 ignoreErrors = TRUE; 496 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 497 break; 498 case 'j': 499 if (argvalue == NULL) goto noarg; 500 forceJobs = TRUE; 501 maxJobs = strtol(argvalue, &p, 0); 502 if (*p != '\0' || maxJobs < 1) { 503 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 504 progname); 505 exit(1); 506 } 507 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 508 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 509 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 510 maxJobTokens = maxJobs; 511 break; 512 case 'k': 513 keepgoing = TRUE; 514 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 515 break; 516 case 'm': 517 if (argvalue == NULL) goto noarg; 518 /* look for magic parent directory search string */ 519 if (strncmp(".../", argvalue, 4) == 0) { 520 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 521 found_path, sizeof(found_path))) 522 break; /* nothing doing */ 523 (void)Dir_AddDir(sysIncPath, found_path); 524 } else { 525 (void)Dir_AddDir(sysIncPath, argvalue); 526 } 527 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 528 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 529 break; 530 case 'n': 531 noExecute = TRUE; 532 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 533 break; 534 case 'q': 535 queryFlag = TRUE; 536 /* Kind of nonsensical, wot? */ 537 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 538 break; 539 case 'r': 540 noBuiltins = TRUE; 541 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 542 break; 543 case 's': 544 beSilent = TRUE; 545 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 546 break; 547 case 't': 548 touchFlag = TRUE; 549 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 550 break; 551 case '-': 552 dashDash = TRUE; 553 break; 554 default: 555 case '?': 556 usage(); 557 } 558 argv += arginc; 559 argc -= arginc; 560 } 561 562 oldVars = TRUE; 563 564 /* 565 * See if the rest of the arguments are variable assignments and 566 * perform them if so. Else take them to be targets and stuff them 567 * on the end of the "create" list. 568 */ 569 for (; argc > 1; ++argv, --argc) 570 if (Parse_IsVar(argv[1])) { 571 Parse_DoVar(argv[1], VAR_CMD); 572 } else { 573 if (!*argv[1]) 574 Punt("illegal (null) argument."); 575 if (*argv[1] == '-' && !dashDash) 576 goto rearg; 577 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 578 } 579 580 return; 581 noarg: 582 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 583 progname, c); 584 usage(); 585 } 586 587 /*- 588 * Main_ParseArgLine -- 589 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 590 * is encountered and by main() when reading the .MAKEFLAGS envariable. 591 * Takes a line of arguments and breaks it into its 592 * component words and passes those words and the number of them to the 593 * MainParseArgs function. 594 * The line should have all its leading whitespace removed. 595 * 596 * Input: 597 * line Line to fracture 598 * 599 * Results: 600 * None 601 * 602 * Side Effects: 603 * Only those that come from the various arguments. 604 */ 605 void 606 Main_ParseArgLine(const char *line) 607 { 608 char **argv; /* Manufactured argument vector */ 609 int argc; /* Number of arguments in argv */ 610 char *args; /* Space used by the args */ 611 char *buf, *p1; 612 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 613 size_t len; 614 615 if (line == NULL) 616 return; 617 for (; *line == ' '; ++line) 618 continue; 619 if (!*line) 620 return; 621 622 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 623 (void)snprintf(buf, len, "%s %s", argv0, line); 624 if (p1) 625 free(p1); 626 627 argv = brk_string(buf, &argc, TRUE, &args); 628 if (argv == NULL) { 629 Error("Unterminated quoted string [%s]", buf); 630 free(buf); 631 return; 632 } 633 free(buf); 634 MainParseArgs(argc, argv); 635 636 free(args); 637 free(argv); 638 } 639 640 Boolean 641 Main_SetObjdir(const char *path) 642 { 643 struct stat sb; 644 char *p = NULL; 645 char buf[MAXPATHLEN + 1]; 646 Boolean rc = FALSE; 647 648 /* expand variable substitutions */ 649 if (strchr(path, '$') != 0) { 650 snprintf(buf, MAXPATHLEN, "%s", path); 651 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 652 } 653 654 if (path[0] != '/') { 655 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 656 path = buf; 657 } 658 659 /* look for the directory and try to chdir there */ 660 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 661 if (chdir(path)) { 662 (void)fprintf(stderr, "make warning: %s: %s.\n", 663 path, strerror(errno)); 664 } else { 665 strncpy(objdir, path, MAXPATHLEN); 666 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 667 setenv("PWD", objdir, 1); 668 Dir_InitDot(); 669 rc = TRUE; 670 } 671 } 672 673 if (p) 674 free(p); 675 return rc; 676 } 677 678 /*- 679 * ReadAllMakefiles -- 680 * wrapper around ReadMakefile() to read all. 681 * 682 * Results: 683 * TRUE if ok, FALSE on error 684 */ 685 static int 686 ReadAllMakefiles(const void *p, const void *q) 687 { 688 return (ReadMakefile(p, q) == 0); 689 } 690 691 int 692 str2Lst_Append(Lst lp, char *str, const char *sep) 693 { 694 char *cp; 695 int n; 696 697 if (!sep) 698 sep = " \t"; 699 700 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 701 (void)Lst_AtEnd(lp, cp); 702 n++; 703 } 704 return (n); 705 } 706 707 #ifdef SIGINFO 708 /*ARGSUSED*/ 709 static void 710 siginfo(int signo MAKE_ATTR_UNUSED) 711 { 712 char dir[MAXPATHLEN]; 713 char str[2 * MAXPATHLEN]; 714 int len; 715 if (getcwd(dir, sizeof(dir)) == NULL) 716 return; 717 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 718 if (len > 0) 719 (void)write(STDERR_FILENO, str, (size_t)len); 720 } 721 #endif 722 723 /* 724 * Allow makefiles some control over the mode we run in. 725 */ 726 void 727 MakeMode(const char *mode) 728 { 729 char *mp = NULL; 730 731 if (!mode) 732 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 733 734 if (mode && *mode) { 735 if (strstr(mode, "compat")) { 736 compatMake = TRUE; 737 forceJobs = FALSE; 738 } 739 #if USE_META 740 if (strstr(mode, "meta")) 741 meta_init(mode); 742 #endif 743 } 744 if (mp) 745 free(mp); 746 } 747 748 /*- 749 * main -- 750 * The main function, for obvious reasons. Initializes variables 751 * and a few modules, then parses the arguments give it in the 752 * environment and on the command line. Reads the system makefile 753 * followed by either Makefile, makefile or the file given by the 754 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 755 * flags it has received by then uses either the Make or the Compat 756 * module to create the initial list of targets. 757 * 758 * Results: 759 * If -q was given, exits -1 if anything was out-of-date. Else it exits 760 * 0. 761 * 762 * Side Effects: 763 * The program exits when done. Targets are created. etc. etc. etc. 764 */ 765 int 766 main(int argc, char **argv) 767 { 768 Lst targs; /* target nodes to create -- passed to Make_Init */ 769 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 770 struct stat sb, sa; 771 char *p1, *path, *pwd; 772 char mdpath[MAXPATHLEN]; 773 const char *machine = getenv("MACHINE"); 774 const char *machine_arch = getenv("MACHINE_ARCH"); 775 char *syspath = getenv("MAKESYSPATH"); 776 Lst sysMkPath; /* Path of sys.mk */ 777 char *cp = NULL, *start; 778 /* avoid faults on read-only strings */ 779 static char defsyspath[] = _PATH_DEFSYSPATH; 780 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 781 struct timeval rightnow; /* to initialize random seed */ 782 #ifdef MAKE_NATIVE 783 struct utsname utsname; 784 #endif 785 786 /* default to writing debug to stderr */ 787 debug_file = stderr; 788 789 #ifdef SIGINFO 790 (void)bmake_signal(SIGINFO, siginfo); 791 #endif 792 /* 793 * Set the seed to produce a different random sequence 794 * on each program execution. 795 */ 796 gettimeofday(&rightnow, NULL); 797 srandom(rightnow.tv_sec + rightnow.tv_usec); 798 799 if ((progname = strrchr(argv[0], '/')) != NULL) 800 progname++; 801 else 802 progname = argv[0]; 803 #ifdef RLIMIT_NOFILE 804 /* 805 * get rid of resource limit on file descriptors 806 */ 807 { 808 struct rlimit rl; 809 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 810 rl.rlim_cur != rl.rlim_max) { 811 rl.rlim_cur = rl.rlim_max; 812 (void)setrlimit(RLIMIT_NOFILE, &rl); 813 } 814 } 815 #endif 816 817 /* 818 * Get the name of this type of MACHINE from utsname 819 * so we can share an executable for similar machines. 820 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 821 * 822 * Note that both MACHINE and MACHINE_ARCH are decided at 823 * run-time. 824 */ 825 if (!machine) { 826 #ifdef MAKE_NATIVE 827 if (uname(&utsname) == -1) { 828 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 829 strerror(errno)); 830 exit(2); 831 } 832 machine = utsname.machine; 833 #else 834 #ifdef MAKE_MACHINE 835 machine = MAKE_MACHINE; 836 #else 837 machine = "unknown"; 838 #endif 839 #endif 840 } 841 842 if (!machine_arch) { 843 #ifndef MACHINE_ARCH 844 #ifdef MAKE_MACHINE_ARCH 845 machine_arch = MAKE_MACHINE_ARCH; 846 #else 847 machine_arch = "unknown"; 848 #endif 849 #else 850 machine_arch = MACHINE_ARCH; 851 #endif 852 } 853 854 myPid = getpid(); /* remember this for vFork() */ 855 856 /* 857 * Just in case MAKEOBJDIR wants us to do something tricky. 858 */ 859 Var_Init(); /* Initialize the lists of variables for 860 * parsing arguments */ 861 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 862 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 863 #ifdef MAKE_VERSION 864 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 865 #endif 866 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 867 /* 868 * This is the traditional preference for makefiles. 869 */ 870 #ifndef MAKEFILE_PREFERENCE_LIST 871 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 872 #endif 873 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 874 VAR_GLOBAL, 0); 875 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 876 877 create = Lst_Init(FALSE); 878 makefiles = Lst_Init(FALSE); 879 printVars = FALSE; 880 variables = Lst_Init(FALSE); 881 beSilent = FALSE; /* Print commands as executed */ 882 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 883 noExecute = FALSE; /* Execute all commands */ 884 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 885 keepgoing = FALSE; /* Stop on error */ 886 allPrecious = FALSE; /* Remove targets when interrupted */ 887 queryFlag = FALSE; /* This is not just a check-run */ 888 noBuiltins = FALSE; /* Read the built-in rules */ 889 touchFlag = FALSE; /* Actually update targets */ 890 debug = 0; /* No debug verbosity, please. */ 891 jobsRunning = FALSE; 892 893 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 894 maxJobTokens = maxJobs; 895 compatMake = FALSE; /* No compat mode */ 896 ignorePWD = FALSE; 897 898 /* 899 * Initialize the parsing, directory and variable modules to prepare 900 * for the reading of inclusion paths and variable settings on the 901 * command line 902 */ 903 904 /* 905 * Initialize various variables. 906 * MAKE also gets this name, for compatibility 907 * .MAKEFLAGS gets set to the empty string just in case. 908 * MFLAGS also gets initialized empty, for compatibility. 909 */ 910 Parse_Init(); 911 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 912 /* 913 * Leave alone if it is an absolute path, or if it does 914 * not contain a '/' in which case we need to find it in 915 * the path, like execvp(3) and the shells do. 916 */ 917 p1 = argv[0]; 918 } else { 919 /* 920 * A relative path, canonicalize it. 921 */ 922 p1 = realpath(argv[0], mdpath); 923 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 924 p1 = argv[0]; /* realpath failed */ 925 } 926 } 927 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 928 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 929 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 930 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 931 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 932 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 933 934 /* 935 * Set some other useful macros 936 */ 937 { 938 char tmp[64]; 939 const char *ep; 940 941 if (!(ep = getenv(MAKE_LEVEL))) { 942 ep = "0"; 943 } 944 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0); 945 snprintf(tmp, sizeof(tmp), "%u", myPid); 946 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 947 snprintf(tmp, sizeof(tmp), "%u", getppid()); 948 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 949 } 950 Job_SetPrefix(); 951 952 /* 953 * First snag any flags out of the MAKE environment variable. 954 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 955 * in a different format). 956 */ 957 #ifdef POSIX 958 Main_ParseArgLine(getenv("MAKEFLAGS")); 959 #else 960 Main_ParseArgLine(getenv("MAKE")); 961 #endif 962 963 /* 964 * Find where we are (now). 965 * We take care of PWD for the automounter below... 966 */ 967 if (getcwd(curdir, MAXPATHLEN) == NULL) { 968 (void)fprintf(stderr, "%s: getcwd: %s.\n", 969 progname, strerror(errno)); 970 exit(2); 971 } 972 973 MainParseArgs(argc, argv); 974 975 /* 976 * Verify that cwd is sane. 977 */ 978 if (stat(curdir, &sa) == -1) { 979 (void)fprintf(stderr, "%s: %s: %s.\n", 980 progname, curdir, strerror(errno)); 981 exit(2); 982 } 983 984 /* 985 * All this code is so that we know where we are when we start up 986 * on a different machine with pmake. 987 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 988 * since the value of curdir can vary depending on how we got 989 * here. Ie sitting at a shell prompt (shell that provides $PWD) 990 * or via subdir.mk in which case its likely a shell which does 991 * not provide it. 992 * So, to stop it breaking this case only, we ignore PWD if 993 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 994 */ 995 if (!ignorePWD && 996 (pwd = getenv("PWD")) != NULL && 997 getenv("MAKEOBJDIRPREFIX") == NULL) { 998 const char *makeobjdir = getenv("MAKEOBJDIR"); 999 1000 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1001 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 1002 sa.st_dev == sb.st_dev) 1003 (void)strncpy(curdir, pwd, MAXPATHLEN); 1004 } 1005 } 1006 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1007 1008 /* 1009 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1010 * MAKEOBJDIR is set in the environment, try only that value 1011 * and fall back to .CURDIR if it does not exist. 1012 * 1013 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1014 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1015 * of these paths exist, just use .CURDIR. 1016 */ 1017 Dir_Init(curdir); 1018 (void)Main_SetObjdir(curdir); 1019 1020 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1021 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1022 (void)Main_SetObjdir(mdpath); 1023 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1024 (void)Main_SetObjdir(path); 1025 } else { 1026 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1027 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1028 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1029 _PATH_OBJDIRPREFIX, curdir); 1030 (void)Main_SetObjdir(mdpath); 1031 } 1032 } 1033 1034 /* 1035 * Be compatible if user did not specify -j and did not explicitly 1036 * turned compatibility on 1037 */ 1038 if (!compatMake && !forceJobs) { 1039 compatMake = TRUE; 1040 } 1041 1042 /* 1043 * Initialize archive, target and suffix modules in preparation for 1044 * parsing the makefile(s) 1045 */ 1046 Arch_Init(); 1047 Targ_Init(); 1048 Suff_Init(); 1049 Trace_Init(tracefile); 1050 1051 DEFAULT = NULL; 1052 (void)time(&now); 1053 1054 Trace_Log(MAKESTART, NULL); 1055 1056 /* 1057 * Set up the .TARGETS variable to contain the list of targets to be 1058 * created. If none specified, make the variable empty -- the parser 1059 * will fill the thing in with the default or .MAIN target. 1060 */ 1061 if (!Lst_IsEmpty(create)) { 1062 LstNode ln; 1063 1064 for (ln = Lst_First(create); ln != NULL; 1065 ln = Lst_Succ(ln)) { 1066 char *name = (char *)Lst_Datum(ln); 1067 1068 Var_Append(".TARGETS", name, VAR_GLOBAL); 1069 } 1070 } else 1071 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1072 1073 1074 /* 1075 * If no user-supplied system path was given (through the -m option) 1076 * add the directories from the DEFSYSPATH (more than one may be given 1077 * as dir1:...:dirn) to the system include path. 1078 */ 1079 if (syspath == NULL || *syspath == '\0') 1080 syspath = defsyspath; 1081 else 1082 syspath = bmake_strdup(syspath); 1083 1084 for (start = syspath; *start != '\0'; start = cp) { 1085 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1086 continue; 1087 if (*cp == ':') { 1088 *cp++ = '\0'; 1089 } 1090 /* look for magic parent directory search string */ 1091 if (strncmp(".../", start, 4) != 0) { 1092 (void)Dir_AddDir(defIncPath, start); 1093 } else { 1094 if (Dir_FindHereOrAbove(curdir, start+4, 1095 found_path, sizeof(found_path))) { 1096 (void)Dir_AddDir(defIncPath, found_path); 1097 } 1098 } 1099 } 1100 if (syspath != defsyspath) 1101 free(syspath); 1102 1103 /* 1104 * Read in the built-in rules first, followed by the specified 1105 * makefile, if it was (makefile != NULL), or the default 1106 * makefile and Makefile, in that order, if it wasn't. 1107 */ 1108 if (!noBuiltins) { 1109 LstNode ln; 1110 1111 sysMkPath = Lst_Init(FALSE); 1112 Dir_Expand(_PATH_DEFSYSMK, 1113 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1114 sysMkPath); 1115 if (Lst_IsEmpty(sysMkPath)) 1116 Fatal("%s: no system rules (%s).", progname, 1117 _PATH_DEFSYSMK); 1118 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1119 if (ln == NULL) 1120 Fatal("%s: cannot open %s.", progname, 1121 (char *)Lst_Datum(ln)); 1122 } 1123 1124 if (!Lst_IsEmpty(makefiles)) { 1125 LstNode ln; 1126 1127 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1128 if (ln != NULL) 1129 Fatal("%s: cannot open %s.", progname, 1130 (char *)Lst_Datum(ln)); 1131 } else { 1132 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1133 VAR_CMD, 0); 1134 if (p1) { 1135 (void)str2Lst_Append(makefiles, p1, NULL); 1136 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1137 free(p1); 1138 } 1139 } 1140 1141 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1142 if (!noBuiltins || !printVars) { 1143 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1144 VAR_CMD, 0); 1145 doing_depend = TRUE; 1146 (void)ReadMakefile(makeDependfile, NULL); 1147 doing_depend = FALSE; 1148 } 1149 1150 MakeMode(NULL); 1151 1152 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1153 if (p1) 1154 free(p1); 1155 1156 if (!compatMake) 1157 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1158 if (DEBUG(JOB)) 1159 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1160 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1161 1162 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1163 1164 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1165 1166 1167 /* 1168 * For compatibility, look at the directories in the VPATH variable 1169 * and add them to the search path, if the variable is defined. The 1170 * variable's value is in the same format as the PATH envariable, i.e. 1171 * <directory>:<directory>:<directory>... 1172 */ 1173 if (Var_Exists("VPATH", VAR_CMD)) { 1174 char *vpath, savec; 1175 /* 1176 * GCC stores string constants in read-only memory, but 1177 * Var_Subst will want to write this thing, so store it 1178 * in an array 1179 */ 1180 static char VPATH[] = "${VPATH}"; 1181 1182 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1183 path = vpath; 1184 do { 1185 /* skip to end of directory */ 1186 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1187 continue; 1188 /* Save terminator character so know when to stop */ 1189 savec = *cp; 1190 *cp = '\0'; 1191 /* Add directory to search path */ 1192 (void)Dir_AddDir(dirSearchPath, path); 1193 *cp = savec; 1194 path = cp + 1; 1195 } while (savec == ':'); 1196 free(vpath); 1197 } 1198 1199 /* 1200 * Now that all search paths have been read for suffixes et al, it's 1201 * time to add the default search path to their lists... 1202 */ 1203 Suff_DoPaths(); 1204 1205 /* 1206 * Propagate attributes through :: dependency lists. 1207 */ 1208 Targ_Propagate(); 1209 1210 /* print the initial graph, if the user requested it */ 1211 if (DEBUG(GRAPH1)) 1212 Targ_PrintGraph(1); 1213 1214 /* print the values of any variables requested by the user */ 1215 if (printVars) { 1216 LstNode ln; 1217 1218 for (ln = Lst_First(variables); ln != NULL; 1219 ln = Lst_Succ(ln)) { 1220 char *var = (char *)Lst_Datum(ln); 1221 char *value; 1222 1223 if (strchr(var, '$')) { 1224 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1225 } else { 1226 value = Var_Value(var, VAR_GLOBAL, &p1); 1227 } 1228 printf("%s\n", value ? value : ""); 1229 if (p1) 1230 free(p1); 1231 } 1232 } else { 1233 /* 1234 * Have now read the entire graph and need to make a list of 1235 * targets to create. If none was given on the command line, 1236 * we consult the parsing module to find the main target(s) 1237 * to create. 1238 */ 1239 if (Lst_IsEmpty(create)) 1240 targs = Parse_MainName(); 1241 else 1242 targs = Targ_FindList(create, TARG_CREATE); 1243 1244 if (!compatMake) { 1245 /* 1246 * Initialize job module before traversing the graph 1247 * now that any .BEGIN and .END targets have been read. 1248 * This is done only if the -q flag wasn't given 1249 * (to prevent the .BEGIN from being executed should 1250 * it exist). 1251 */ 1252 if (!queryFlag) { 1253 Job_Init(); 1254 jobsRunning = TRUE; 1255 } 1256 1257 /* Traverse the graph, checking on all the targets */ 1258 outOfDate = Make_Run(targs); 1259 } else { 1260 /* 1261 * Compat_Init will take care of creating all the 1262 * targets as well as initializing the module. 1263 */ 1264 Compat_Run(targs); 1265 } 1266 } 1267 1268 #ifdef CLEANUP 1269 Lst_Destroy(targs, NULL); 1270 Lst_Destroy(variables, NULL); 1271 Lst_Destroy(makefiles, NULL); 1272 Lst_Destroy(create, (FreeProc *)free); 1273 #endif 1274 1275 /* print the graph now it's been processed if the user requested it */ 1276 if (DEBUG(GRAPH2)) 1277 Targ_PrintGraph(2); 1278 1279 Trace_Log(MAKEEND, 0); 1280 1281 Suff_End(); 1282 Targ_End(); 1283 Arch_End(); 1284 Var_End(); 1285 Parse_End(); 1286 Dir_End(); 1287 Job_End(); 1288 Trace_End(); 1289 1290 return outOfDate ? 1 : 0; 1291 } 1292 1293 /*- 1294 * ReadMakefile -- 1295 * Open and parse the given makefile. 1296 * 1297 * Results: 1298 * 0 if ok. -1 if couldn't open file. 1299 * 1300 * Side Effects: 1301 * lots 1302 */ 1303 static int 1304 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1305 { 1306 const char *fname = p; /* makefile to read */ 1307 int fd; 1308 size_t len = MAXPATHLEN; 1309 char *name, *path = bmake_malloc(len); 1310 1311 if (!strcmp(fname, "-")) { 1312 Parse_File(NULL /*stdin*/, -1); 1313 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1314 } else { 1315 /* if we've chdir'd, rebuild the path name */ 1316 if (strcmp(curdir, objdir) && *fname != '/') { 1317 size_t plen = strlen(curdir) + strlen(fname) + 2; 1318 if (len < plen) 1319 path = bmake_realloc(path, len = 2 * plen); 1320 1321 (void)snprintf(path, len, "%s/%s", curdir, fname); 1322 fd = open(path, O_RDONLY); 1323 if (fd != -1) { 1324 fname = path; 1325 goto found; 1326 } 1327 1328 /* If curdir failed, try objdir (ala .depend) */ 1329 plen = strlen(objdir) + strlen(fname) + 2; 1330 if (len < plen) 1331 path = bmake_realloc(path, len = 2 * plen); 1332 (void)snprintf(path, len, "%s/%s", objdir, fname); 1333 fd = open(path, O_RDONLY); 1334 if (fd != -1) { 1335 fname = path; 1336 goto found; 1337 } 1338 } else { 1339 fd = open(fname, O_RDONLY); 1340 if (fd != -1) 1341 goto found; 1342 } 1343 /* look in -I and system include directories. */ 1344 name = Dir_FindFile(fname, parseIncPath); 1345 if (!name) 1346 name = Dir_FindFile(fname, 1347 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1348 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1349 if (name) 1350 free(name); 1351 free(path); 1352 return(-1); 1353 } 1354 fname = name; 1355 /* 1356 * set the MAKEFILE variable desired by System V fans -- the 1357 * placement of the setting here means it gets set to the last 1358 * makefile specified, as it is set by SysV make. 1359 */ 1360 found: 1361 if (!doing_depend) 1362 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1363 Parse_File(fname, fd); 1364 } 1365 free(path); 1366 return(0); 1367 } 1368 1369 1370 /* 1371 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1372 * in situations that would not arrise with ./obj (links or not). 1373 * This tends to break things like: 1374 * 1375 * build: 1376 * ${MAKE} includes 1377 * 1378 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1379 * opposed to an argument) in a command line and if so returns 1380 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1381 * the Makefile hold true. 1382 * 1383 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1384 * 1385 * The chdir() only happens in the child process, and does nothing if 1386 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1387 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1388 * do nothing - to ensure historic semantics can be retained. 1389 */ 1390 static int Check_Cwd_Off = 0; 1391 1392 static char * 1393 Check_Cwd_av(int ac, char **av, int copy) 1394 { 1395 static char *make[4]; 1396 static char *cur_dir = NULL; 1397 char **mp; 1398 char *cp; 1399 int is_cmd, next_cmd; 1400 int i; 1401 int n; 1402 1403 if (Check_Cwd_Off) { 1404 if (DEBUG(CWD)) 1405 fprintf(debug_file, "check_cwd: check is off.\n"); 1406 return NULL; 1407 } 1408 1409 if (make[0] == NULL) { 1410 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1411 Check_Cwd_Off = 1; 1412 if (DEBUG(CWD)) 1413 fprintf(debug_file, "check_cwd: turning check off.\n"); 1414 return NULL; 1415 } 1416 1417 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1418 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1419 make[0] = make[1]; 1420 make[1] = NULL; 1421 } else 1422 ++make[0]; 1423 make[2] = NULL; 1424 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1425 } 1426 if (ac == 0 || av == NULL) { 1427 if (DEBUG(CWD)) 1428 fprintf(debug_file, "check_cwd: empty command.\n"); 1429 return NULL; /* initialization only */ 1430 } 1431 1432 if (getenv("MAKEOBJDIR") == NULL && 1433 getenv("MAKEOBJDIRPREFIX") == NULL) { 1434 if (DEBUG(CWD)) 1435 fprintf(debug_file, "check_cwd: no obj dirs.\n"); 1436 return NULL; 1437 } 1438 1439 1440 next_cmd = 1; 1441 for (i = 0; i < ac; ++i) { 1442 is_cmd = next_cmd; 1443 1444 n = strlen(av[i]); 1445 cp = &(av[i])[n - 1]; 1446 if (strspn(av[i], "|&;") == (size_t)n) { 1447 next_cmd = 1; 1448 continue; 1449 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1450 next_cmd = 1; 1451 if (copy) { 1452 do { 1453 *cp-- = '\0'; 1454 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1455 *cp == ')' || *cp == '}') ; 1456 } else { 1457 /* 1458 * XXX this should not happen. 1459 */ 1460 fprintf(stderr, "%s: WARNING: raw arg ends in shell meta '%s'\n", 1461 progname, av[i]); 1462 } 1463 } else 1464 next_cmd = 0; 1465 1466 cp = av[i]; 1467 if (*cp == ';' || *cp == '&' || *cp == '|') 1468 is_cmd = 1; 1469 1470 if (DEBUG(CWD)) 1471 fprintf(debug_file, "av[%d] == %s '%s'", 1472 i, (is_cmd) ? "cmd" : "arg", av[i]); 1473 if (is_cmd != 0) { 1474 if (*cp == '(' || *cp == '{' || 1475 *cp == ';' || *cp == '&' || *cp == '|') { 1476 do { 1477 ++cp; 1478 } while (*cp == '(' || *cp == '{' || 1479 *cp == ';' || *cp == '&' || *cp == '|'); 1480 if (*cp == '\0') { 1481 next_cmd = 1; 1482 continue; 1483 } 1484 } 1485 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1486 if (DEBUG(CWD)) 1487 fprintf(debug_file, " == cd, done.\n"); 1488 return NULL; 1489 } 1490 for (mp = make; *mp != NULL; ++mp) { 1491 n = strlen(*mp); 1492 if (strcmp(cp, *mp) == 0) { 1493 if (DEBUG(CWD)) 1494 fprintf(debug_file, " %s == '%s', chdir(%s)\n", 1495 cp, *mp, cur_dir); 1496 return cur_dir; 1497 } 1498 } 1499 } 1500 if (DEBUG(CWD)) 1501 fprintf(debug_file, "\n"); 1502 } 1503 return NULL; 1504 } 1505 1506 char * 1507 Check_Cwd_Cmd(const char *cmd) 1508 { 1509 char *cp, *bp; 1510 char **av; 1511 int ac; 1512 1513 if (Check_Cwd_Off) 1514 return NULL; 1515 1516 if (cmd) { 1517 av = brk_string(cmd, &ac, TRUE, &bp); 1518 if (DEBUG(CWD)) 1519 fprintf(debug_file, "splitting: '%s' -> %d words\n", 1520 cmd, ac); 1521 } else { 1522 ac = 0; 1523 av = NULL; 1524 bp = NULL; 1525 } 1526 cp = Check_Cwd_av(ac, av, 1); 1527 if (bp) 1528 free(bp); 1529 if (av) 1530 free(av); 1531 return cp; 1532 } 1533 1534 void 1535 Check_Cwd(const char **argv) 1536 { 1537 char *cp; 1538 int ac; 1539 1540 if (Check_Cwd_Off) 1541 return; 1542 1543 for (ac = 0; argv[ac] != NULL; ++ac) 1544 /* NOTHING */; 1545 if (ac == 3 && *argv[1] == '-') { 1546 cp = Check_Cwd_Cmd(argv[2]); 1547 } else { 1548 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1549 } 1550 if (cp) { 1551 chdir(cp); 1552 } 1553 } 1554 1555 /*- 1556 * Cmd_Exec -- 1557 * Execute the command in cmd, and return the output of that command 1558 * in a string. 1559 * 1560 * Results: 1561 * A string containing the output of the command, or the empty string 1562 * If errnum is not NULL, it contains the reason for the command failure 1563 * 1564 * Side Effects: 1565 * The string must be freed by the caller. 1566 */ 1567 char * 1568 Cmd_Exec(const char *cmd, const char **errnum) 1569 { 1570 const char *args[4]; /* Args for invoking the shell */ 1571 int fds[2]; /* Pipe streams */ 1572 int cpid; /* Child PID */ 1573 int pid; /* PID from wait() */ 1574 char *res; /* result */ 1575 int status; /* command exit status */ 1576 Buffer buf; /* buffer to store the result */ 1577 char *cp; 1578 int cc; 1579 1580 1581 *errnum = NULL; 1582 1583 if (!shellName) 1584 Shell_Init(); 1585 /* 1586 * Set up arguments for shell 1587 */ 1588 args[0] = shellName; 1589 args[1] = "-c"; 1590 args[2] = cmd; 1591 args[3] = NULL; 1592 1593 /* 1594 * Open a pipe for fetching its output 1595 */ 1596 if (pipe(fds) == -1) { 1597 *errnum = "Couldn't create pipe for \"%s\""; 1598 goto bad; 1599 } 1600 1601 /* 1602 * Fork 1603 */ 1604 switch (cpid = vFork()) { 1605 case 0: 1606 /* 1607 * Close input side of pipe 1608 */ 1609 (void)close(fds[0]); 1610 1611 /* 1612 * Duplicate the output stream to the shell's output, then 1613 * shut the extra thing down. Note we don't fetch the error 1614 * stream...why not? Why? 1615 */ 1616 (void)dup2(fds[1], 1); 1617 (void)close(fds[1]); 1618 1619 Var_ExportVars(); 1620 1621 (void)execv(shellPath, UNCONST(args)); 1622 _exit(1); 1623 /*NOTREACHED*/ 1624 1625 case -1: 1626 *errnum = "Couldn't exec \"%s\""; 1627 goto bad; 1628 1629 default: 1630 /* 1631 * No need for the writing half 1632 */ 1633 (void)close(fds[1]); 1634 1635 Buf_Init(&buf, 0); 1636 1637 do { 1638 char result[BUFSIZ]; 1639 cc = read(fds[0], result, sizeof(result)); 1640 if (cc > 0) 1641 Buf_AddBytes(&buf, cc, result); 1642 } 1643 while (cc > 0 || (cc == -1 && errno == EINTR)); 1644 1645 /* 1646 * Close the input side of the pipe. 1647 */ 1648 (void)close(fds[0]); 1649 1650 /* 1651 * Wait for the process to exit. 1652 */ 1653 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1654 JobReapChild(pid, status, FALSE); 1655 continue; 1656 } 1657 cc = Buf_Size(&buf); 1658 res = Buf_Destroy(&buf, FALSE); 1659 1660 if (cc == 0) 1661 *errnum = "Couldn't read shell's output for \"%s\""; 1662 1663 if (WIFSIGNALED(status)) 1664 *errnum = "\"%s\" exited on a signal"; 1665 else if (WEXITSTATUS(status) != 0) 1666 *errnum = "\"%s\" returned non-zero status"; 1667 1668 /* 1669 * Null-terminate the result, convert newlines to spaces and 1670 * install it in the variable. 1671 */ 1672 res[cc] = '\0'; 1673 cp = &res[cc]; 1674 1675 if (cc > 0 && *--cp == '\n') { 1676 /* 1677 * A final newline is just stripped 1678 */ 1679 *cp-- = '\0'; 1680 } 1681 while (cp >= res) { 1682 if (*cp == '\n') { 1683 *cp = ' '; 1684 } 1685 cp--; 1686 } 1687 break; 1688 } 1689 return res; 1690 bad: 1691 res = bmake_malloc(1); 1692 *res = '\0'; 1693 return res; 1694 } 1695 1696 /*- 1697 * Error -- 1698 * Print an error message given its format. 1699 * 1700 * Results: 1701 * None. 1702 * 1703 * Side Effects: 1704 * The message is printed. 1705 */ 1706 /* VARARGS */ 1707 void 1708 Error(const char *fmt, ...) 1709 { 1710 va_list ap; 1711 FILE *err_file; 1712 1713 err_file = debug_file; 1714 if (err_file == stdout) 1715 err_file = stderr; 1716 (void)fflush(stdout); 1717 for (;;) { 1718 va_start(ap, fmt); 1719 fprintf(err_file, "%s: ", progname); 1720 (void)vfprintf(err_file, fmt, ap); 1721 va_end(ap); 1722 (void)fprintf(err_file, "\n"); 1723 (void)fflush(err_file); 1724 if (err_file == stderr) 1725 break; 1726 err_file = stderr; 1727 } 1728 } 1729 1730 /*- 1731 * Fatal -- 1732 * Produce a Fatal error message. If jobs are running, waits for them 1733 * to finish. 1734 * 1735 * Results: 1736 * None 1737 * 1738 * Side Effects: 1739 * The program exits 1740 */ 1741 /* VARARGS */ 1742 void 1743 Fatal(const char *fmt, ...) 1744 { 1745 va_list ap; 1746 1747 va_start(ap, fmt); 1748 if (jobsRunning) 1749 Job_Wait(); 1750 1751 (void)fflush(stdout); 1752 (void)vfprintf(stderr, fmt, ap); 1753 va_end(ap); 1754 (void)fprintf(stderr, "\n"); 1755 (void)fflush(stderr); 1756 1757 PrintOnError(NULL, NULL); 1758 1759 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1760 Targ_PrintGraph(2); 1761 Trace_Log(MAKEERROR, 0); 1762 exit(2); /* Not 1 so -q can distinguish error */ 1763 } 1764 1765 /* 1766 * Punt -- 1767 * Major exception once jobs are being created. Kills all jobs, prints 1768 * a message and exits. 1769 * 1770 * Results: 1771 * None 1772 * 1773 * Side Effects: 1774 * All children are killed indiscriminately and the program Lib_Exits 1775 */ 1776 /* VARARGS */ 1777 void 1778 Punt(const char *fmt, ...) 1779 { 1780 va_list ap; 1781 1782 va_start(ap, fmt); 1783 (void)fflush(stdout); 1784 (void)fprintf(stderr, "%s: ", progname); 1785 (void)vfprintf(stderr, fmt, ap); 1786 va_end(ap); 1787 (void)fprintf(stderr, "\n"); 1788 (void)fflush(stderr); 1789 1790 PrintOnError(NULL, NULL); 1791 1792 DieHorribly(); 1793 } 1794 1795 /*- 1796 * DieHorribly -- 1797 * Exit without giving a message. 1798 * 1799 * Results: 1800 * None 1801 * 1802 * Side Effects: 1803 * A big one... 1804 */ 1805 void 1806 DieHorribly(void) 1807 { 1808 if (jobsRunning) 1809 Job_AbortAll(); 1810 if (DEBUG(GRAPH2)) 1811 Targ_PrintGraph(2); 1812 Trace_Log(MAKEERROR, 0); 1813 exit(2); /* Not 1, so -q can distinguish error */ 1814 } 1815 1816 /* 1817 * Finish -- 1818 * Called when aborting due to errors in child shell to signal 1819 * abnormal exit. 1820 * 1821 * Results: 1822 * None 1823 * 1824 * Side Effects: 1825 * The program exits 1826 */ 1827 void 1828 Finish(int errors) 1829 /* number of errors encountered in Make_Make */ 1830 { 1831 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1832 } 1833 1834 /* 1835 * enunlink -- 1836 * Remove a file carefully, avoiding directories. 1837 */ 1838 int 1839 eunlink(const char *file) 1840 { 1841 struct stat st; 1842 1843 if (lstat(file, &st) == -1) 1844 return -1; 1845 1846 if (S_ISDIR(st.st_mode)) { 1847 errno = EISDIR; 1848 return -1; 1849 } 1850 return unlink(file); 1851 } 1852 1853 /* 1854 * execError -- 1855 * Print why exec failed, avoiding stdio. 1856 */ 1857 void 1858 execError(const char *af, const char *av) 1859 { 1860 #ifdef USE_IOVEC 1861 int i = 0; 1862 struct iovec iov[8]; 1863 #define IOADD(s) \ 1864 (void)(iov[i].iov_base = UNCONST(s), \ 1865 iov[i].iov_len = strlen(iov[i].iov_base), \ 1866 i++) 1867 #else 1868 #define IOADD(void)write(2, s, strlen(s)) 1869 #endif 1870 1871 IOADD(progname); 1872 IOADD(": "); 1873 IOADD(af); 1874 IOADD("("); 1875 IOADD(av); 1876 IOADD(") failed ("); 1877 IOADD(strerror(errno)); 1878 IOADD(")\n"); 1879 1880 #ifdef USE_IOVEC 1881 (void)writev(2, iov, 8); 1882 #endif 1883 } 1884 1885 /* 1886 * usage -- 1887 * exit with usage message 1888 */ 1889 static void 1890 usage(void) 1891 { 1892 (void)fprintf(stderr, 1893 "usage: %s [-BeikNnqrstWX] \n\ 1894 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1895 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1896 [-V variable] [variable=value] [target ...]\n", progname); 1897 exit(2); 1898 } 1899 1900 1901 int 1902 PrintAddr(void *a, void *b) 1903 { 1904 printf("%lx ", (unsigned long) a); 1905 return b ? 0 : 0; 1906 } 1907 1908 1909 1910 void 1911 PrintOnError(GNode *gn, const char *s) 1912 { 1913 static GNode *en = NULL; 1914 char tmp[64]; 1915 char *cp; 1916 1917 if (s) 1918 printf("%s", s); 1919 1920 printf("\n%s: stopped in %s\n", progname, curdir); 1921 1922 if (en) 1923 return; /* we've been here! */ 1924 if (gn) { 1925 /* 1926 * We can print this even if there is no .ERROR target. 1927 */ 1928 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1929 } 1930 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1931 sizeof(tmp) - 1); 1932 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1933 if (cp) { 1934 if (*cp) 1935 printf("%s", cp); 1936 free(cp); 1937 } 1938 /* 1939 * Finally, see if there is a .ERROR target, and run it if so. 1940 */ 1941 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1942 if (en) { 1943 en->type |= OP_SPECIAL; 1944 Compat_Make(en, en); 1945 } 1946 } 1947 1948 void 1949 Main_ExportMAKEFLAGS(Boolean first) 1950 { 1951 static int once = 1; 1952 char tmp[64]; 1953 char *s; 1954 1955 if (once != first) 1956 return; 1957 once = 0; 1958 1959 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1960 sizeof(tmp)); 1961 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1962 if (s && *s) { 1963 #ifdef POSIX 1964 setenv("MAKEFLAGS", s, 1); 1965 #else 1966 setenv("MAKE", s, 1); 1967 #endif 1968 } 1969 } 1970 1971 char * 1972 getTmpdir(void) 1973 { 1974 static char *tmpdir = NULL; 1975 1976 if (!tmpdir) { 1977 struct stat st; 1978 1979 /* 1980 * Honor $TMPDIR but only if it is valid. 1981 * Ensure it ends with /. 1982 */ 1983 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1984 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1985 free(tmpdir); 1986 tmpdir = bmake_strdup(_PATH_TMP); 1987 } 1988 } 1989 return tmpdir; 1990 } 1991 1992 /* 1993 * Create and open a temp file using "pattern". 1994 * If "fnamep" is provided set it to a copy of the filename created. 1995 * Otherwise unlink the file once open. 1996 */ 1997 int 1998 mkTempFile(const char *pattern, char **fnamep) 1999 { 2000 static char *tmpdir = NULL; 2001 char tfile[MAXPATHLEN]; 2002 int fd; 2003 2004 if (!pattern) 2005 pattern = TMPPAT; 2006 if (!tmpdir) 2007 tmpdir = getTmpdir(); 2008 if (pattern[0] == '/') { 2009 snprintf(tfile, sizeof(tfile), "%s", pattern); 2010 } else { 2011 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2012 } 2013 if ((fd = mkstemp(tfile)) < 0) 2014 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2015 if (fnamep) { 2016 *fnamep = bmake_strdup(tfile); 2017 } else { 2018 unlink(tfile); /* we just want the descriptor */ 2019 } 2020 return fd; 2021 } 2022
Indexes created Mon Sep 22 13:09:51 GMT 2025