main.c revision 1.192
1 /* $NetBSD: main.c,v 1.192 2010/12/13 01:48:50 dholland 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 1.192 2010/12/13 01:48:50 dholland 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 1.192 2010/12/13 01:48:50 dholland Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and two optional 103 * arguments for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and two arguments. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and two arguments. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/signal.h> 121 #include <sys/stat.h> 122 #ifdef MAKE_NATIVE 123 #include <sys/utsname.h> 124 #endif 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <fcntl.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 134 #include "make.h" 135 #include "hash.h" 136 #include "dir.h" 137 #include "job.h" 138 #include "pathnames.h" 139 #include "trace.h" 140 141 #ifdef USE_IOVEC 142 #include <sys/uio.h> 143 #endif 144 145 #ifndef DEFMAXLOCAL 146 #define DEFMAXLOCAL DEFMAXJOBS 147 #endif /* DEFMAXLOCAL */ 148 149 Lst create; /* Targets to be made */ 150 time_t now; /* Time at start of make */ 151 GNode *DEFAULT; /* .DEFAULT node */ 152 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 153 154 static Boolean noBuiltins; /* -r flag */ 155 static Lst makefiles; /* ordered list of makefiles to read */ 156 static Boolean printVars; /* print value of one or more vars */ 157 static Lst variables; /* list of variables to print */ 158 int maxJobs; /* -j argument */ 159 static int maxJobTokens; /* -j argument */ 160 Boolean compatMake; /* -B argument */ 161 int debug; /* -d argument */ 162 Boolean noExecute; /* -n flag */ 163 Boolean noRecursiveExecute; /* -N flag */ 164 Boolean keepgoing; /* -k flag */ 165 Boolean queryFlag; /* -q flag */ 166 Boolean touchFlag; /* -t flag */ 167 Boolean ignoreErrors; /* -i flag */ 168 Boolean beSilent; /* -s flag */ 169 Boolean oldVars; /* variable substitution style */ 170 Boolean checkEnvFirst; /* -e flag */ 171 Boolean parseWarnFatal; /* -W flag */ 172 Boolean jobServer; /* -J flag */ 173 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 174 Boolean varNoExportEnv; /* -X flag */ 175 Boolean doing_depend; /* Set while reading .depend */ 176 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 177 static const char * tracefile; 178 static char * Check_Cwd_av(int, char **, int); 179 static void MainParseArgs(int, char **); 180 static int ReadMakefile(const void *, const void *); 181 static void usage(void); 182 183 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 184 static char curdir[MAXPATHLEN + 1]; /* startup directory */ 185 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 186 char *progname; /* the program name */ 187 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 mode = "a"; 274 else 275 mode = "w"; 276 if (strcmp(modules, "stdout") == 0) { 277 debug_file = stdout; 278 goto debug_setbuf; 279 } 280 if (strcmp(modules, "stderr") == 0) { 281 debug_file = stderr; 282 goto debug_setbuf; 283 } 284 len = strlen(modules); 285 fname = malloc(len + 20); 286 memcpy(fname, modules, len + 1); 287 /* Let the filename be modified by the pid */ 288 if (strcmp(fname + len - 3, ".%d") == 0) 289 snprintf(fname + len - 2, 20, "%d", getpid()); 290 debug_file = fopen(fname, mode); 291 if (!debug_file) { 292 fprintf(stderr, "Cannot open debug file %s\n", 293 fname); 294 usage(); 295 } 296 free(fname); 297 goto debug_setbuf; 298 default: 299 (void)fprintf(stderr, 300 "%s: illegal argument to d option -- %c\n", 301 progname, *modules); 302 usage(); 303 } 304 } 305 debug_setbuf: 306 /* 307 * Make the debug_file unbuffered, and make 308 * stdout line buffered (unless debugfile == stdout). 309 */ 310 setvbuf(debug_file, NULL, _IONBF, 0); 311 if (debug_file != stdout) { 312 setvbuf(stdout, NULL, _IOLBF, 0); 313 } 314 } 315 316 /*- 317 * MainParseArgs -- 318 * Parse a given argument vector. Called from main() and from 319 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 320 * 321 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 322 * 323 * Results: 324 * None 325 * 326 * Side Effects: 327 * Various global and local flags will be set depending on the flags 328 * given 329 */ 330 static void 331 MainParseArgs(int argc, char **argv) 332 { 333 char *p; 334 int c = '?'; 335 int arginc; 336 char *argvalue; 337 const char *getopt_def; 338 char *optscan; 339 Boolean inOption, dashDash = FALSE; 340 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 341 342 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst" 343 /* Can't actually use getopt(3) because rescanning is not portable */ 344 345 getopt_def = OPTFLAGS; 346 rearg: 347 inOption = FALSE; 348 optscan = NULL; 349 while(argc > 1) { 350 char *getopt_spec; 351 if(!inOption) 352 optscan = argv[1]; 353 c = *optscan++; 354 arginc = 0; 355 if(inOption) { 356 if(c == '\0') { 357 ++argv; 358 --argc; 359 inOption = FALSE; 360 continue; 361 } 362 } else { 363 if (c != '-' || dashDash) 364 break; 365 inOption = TRUE; 366 c = *optscan++; 367 } 368 /* '-' found at some earlier point */ 369 getopt_spec = strchr(getopt_def, c); 370 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 371 /* -<something> found, and <something> should have an arg */ 372 inOption = FALSE; 373 arginc = 1; 374 argvalue = optscan; 375 if(*argvalue == '\0') { 376 if (argc < 3) 377 goto noarg; 378 argvalue = argv[2]; 379 arginc = 2; 380 } 381 } else { 382 argvalue = NULL; 383 } 384 switch(c) { 385 case '\0': 386 arginc = 1; 387 inOption = FALSE; 388 break; 389 case 'B': 390 compatMake = TRUE; 391 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 392 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 393 break; 394 case 'C': 395 if (chdir(argvalue) == -1) { 396 (void)fprintf(stderr, 397 "%s: chdir %s: %s\n", 398 progname, argvalue, 399 strerror(errno)); 400 exit(1); 401 } 402 if (getcwd(curdir, MAXPATHLEN) == NULL) { 403 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 404 exit(2); 405 } 406 ignorePWD = TRUE; 407 break; 408 case 'D': 409 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 410 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 411 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 412 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 413 break; 414 case 'I': 415 if (argvalue == NULL) goto noarg; 416 Parse_AddIncludeDir(argvalue); 417 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 418 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 419 break; 420 case 'J': 421 if (argvalue == NULL) goto noarg; 422 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 423 (void)fprintf(stderr, 424 "%s: internal error -- J option malformed (%s)\n", 425 progname, argvalue); 426 usage(); 427 } 428 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 429 (fcntl(jp_1, F_GETFD, 0) < 0)) { 430 #if 0 431 (void)fprintf(stderr, 432 "%s: ###### warning -- J descriptors were closed!\n", 433 progname); 434 exit(2); 435 #endif 436 jp_0 = -1; 437 jp_1 = -1; 438 compatMake = TRUE; 439 } else { 440 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 441 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 442 jobServer = TRUE; 443 } 444 break; 445 case 'N': 446 noExecute = TRUE; 447 noRecursiveExecute = TRUE; 448 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 449 break; 450 case 'S': 451 keepgoing = FALSE; 452 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 453 break; 454 case 'T': 455 if (argvalue == NULL) goto noarg; 456 tracefile = bmake_strdup(argvalue); 457 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 458 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 459 break; 460 case 'V': 461 if (argvalue == NULL) goto noarg; 462 printVars = TRUE; 463 (void)Lst_AtEnd(variables, argvalue); 464 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 465 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 466 break; 467 case 'W': 468 parseWarnFatal = TRUE; 469 break; 470 case 'X': 471 varNoExportEnv = TRUE; 472 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 473 break; 474 case 'd': 475 if (argvalue == NULL) goto noarg; 476 /* If '-d-opts' don't pass to children */ 477 if (argvalue[0] == '-') 478 argvalue++; 479 else { 480 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 481 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 482 } 483 parse_debug_options(argvalue); 484 break; 485 case 'e': 486 checkEnvFirst = TRUE; 487 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 488 break; 489 case 'f': 490 if (argvalue == NULL) goto noarg; 491 (void)Lst_AtEnd(makefiles, argvalue); 492 break; 493 case 'i': 494 ignoreErrors = TRUE; 495 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 496 break; 497 case 'j': 498 if (argvalue == NULL) goto noarg; 499 forceJobs = TRUE; 500 maxJobs = strtol(argvalue, &p, 0); 501 if (*p != '\0' || maxJobs < 1) { 502 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 503 progname); 504 exit(1); 505 } 506 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 507 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 508 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 509 maxJobTokens = maxJobs; 510 break; 511 case 'k': 512 keepgoing = TRUE; 513 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 514 break; 515 case 'm': 516 if (argvalue == NULL) goto noarg; 517 /* look for magic parent directory search string */ 518 if (strncmp(".../", argvalue, 4) == 0) { 519 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 520 found_path, sizeof(found_path))) 521 break; /* nothing doing */ 522 (void)Dir_AddDir(sysIncPath, found_path); 523 } else { 524 (void)Dir_AddDir(sysIncPath, argvalue); 525 } 526 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 527 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 528 break; 529 case 'n': 530 noExecute = TRUE; 531 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 532 break; 533 case 'q': 534 queryFlag = TRUE; 535 /* Kind of nonsensical, wot? */ 536 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 537 break; 538 case 'r': 539 noBuiltins = TRUE; 540 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 541 break; 542 case 's': 543 beSilent = TRUE; 544 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 545 break; 546 case 't': 547 touchFlag = TRUE; 548 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 549 break; 550 case '-': 551 dashDash = TRUE; 552 break; 553 default: 554 case '?': 555 usage(); 556 } 557 argv += arginc; 558 argc -= arginc; 559 } 560 561 oldVars = TRUE; 562 563 /* 564 * See if the rest of the arguments are variable assignments and 565 * perform them if so. Else take them to be targets and stuff them 566 * on the end of the "create" list. 567 */ 568 for (; argc > 1; ++argv, --argc) 569 if (Parse_IsVar(argv[1])) { 570 Parse_DoVar(argv[1], VAR_CMD); 571 } else { 572 if (!*argv[1]) 573 Punt("illegal (null) argument."); 574 if (*argv[1] == '-' && !dashDash) 575 goto rearg; 576 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 577 } 578 579 return; 580 noarg: 581 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 582 progname, c); 583 usage(); 584 } 585 586 /*- 587 * Main_ParseArgLine -- 588 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 589 * is encountered and by main() when reading the .MAKEFLAGS envariable. 590 * Takes a line of arguments and breaks it into its 591 * component words and passes those words and the number of them to the 592 * MainParseArgs function. 593 * The line should have all its leading whitespace removed. 594 * 595 * Input: 596 * line Line to fracture 597 * 598 * Results: 599 * None 600 * 601 * Side Effects: 602 * Only those that come from the various arguments. 603 */ 604 void 605 Main_ParseArgLine(const char *line) 606 { 607 char **argv; /* Manufactured argument vector */ 608 int argc; /* Number of arguments in argv */ 609 char *args; /* Space used by the args */ 610 char *buf, *p1; 611 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 612 size_t len; 613 614 if (line == NULL) 615 return; 616 for (; *line == ' '; ++line) 617 continue; 618 if (!*line) 619 return; 620 621 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 622 (void)snprintf(buf, len, "%s %s", argv0, line); 623 if (p1) 624 free(p1); 625 626 argv = brk_string(buf, &argc, TRUE, &args); 627 if (argv == NULL) { 628 Error("Unterminated quoted string [%s]", buf); 629 free(buf); 630 return; 631 } 632 free(buf); 633 MainParseArgs(argc, argv); 634 635 free(args); 636 free(argv); 637 } 638 639 Boolean 640 Main_SetObjdir(const char *path) 641 { 642 struct stat sb; 643 char *p = NULL; 644 char buf[MAXPATHLEN + 1]; 645 Boolean rc = FALSE; 646 647 /* expand variable substitutions */ 648 if (strchr(path, '$') != 0) { 649 snprintf(buf, MAXPATHLEN, "%s", path); 650 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 651 } 652 653 if (path[0] != '/') { 654 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 655 path = buf; 656 } 657 658 /* look for the directory and try to chdir there */ 659 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 660 if (chdir(path)) { 661 (void)fprintf(stderr, "make warning: %s: %s.\n", 662 path, strerror(errno)); 663 } else { 664 strncpy(objdir, path, MAXPATHLEN); 665 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 666 setenv("PWD", objdir, 1); 667 Dir_InitDot(); 668 rc = TRUE; 669 } 670 } 671 672 if (p) 673 free(p); 674 return rc; 675 } 676 677 /*- 678 * ReadAllMakefiles -- 679 * wrapper around ReadMakefile() to read all. 680 * 681 * Results: 682 * TRUE if ok, FALSE on error 683 */ 684 static int 685 ReadAllMakefiles(const void *p, const void *q) 686 { 687 return (ReadMakefile(p, q) == 0); 688 } 689 690 static int 691 str2Lst_Append(Lst lp, char *str, const char *sep) 692 { 693 char *cp; 694 int n; 695 696 if (!sep) 697 sep = " \t"; 698 699 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 700 (void)Lst_AtEnd(lp, cp); 701 n++; 702 } 703 return (n); 704 } 705 706 #ifdef SIGINFO 707 /*ARGSUSED*/ 708 static void 709 siginfo(int signo) 710 { 711 char dir[MAXPATHLEN]; 712 char str[2 * MAXPATHLEN]; 713 int len; 714 if (getcwd(dir, sizeof(dir)) == NULL) 715 return; 716 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 717 if (len > 0) 718 (void)write(STDERR_FILENO, str, (size_t)len); 719 } 720 #endif 721 722 /* 723 * Allow makefiles some control over the mode we run in. 724 */ 725 void 726 MakeMode(const char *mode) 727 { 728 char *mp = NULL; 729 730 if (!mode) 731 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 732 733 if (mode && *mode) { 734 if (strstr(mode, "compat")) { 735 compatMake = TRUE; 736 forceJobs = FALSE; 737 } 738 #if USE_META 739 if (strstr(mode, "meta")) 740 meta_init(mode); 741 #endif 742 } 743 if (mp) 744 free(mp); 745 } 746 747 /*- 748 * main -- 749 * The main function, for obvious reasons. Initializes variables 750 * and a few modules, then parses the arguments give it in the 751 * environment and on the command line. Reads the system makefile 752 * followed by either Makefile, makefile or the file given by the 753 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 754 * flags it has received by then uses either the Make or the Compat 755 * module to create the initial list of targets. 756 * 757 * Results: 758 * If -q was given, exits -1 if anything was out-of-date. Else it exits 759 * 0. 760 * 761 * Side Effects: 762 * The program exits when done. Targets are created. etc. etc. etc. 763 */ 764 int 765 main(int argc, char **argv) 766 { 767 Lst targs; /* target nodes to create -- passed to Make_Init */ 768 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 769 struct stat sb, sa; 770 char *p1, *path, *pwd; 771 char mdpath[MAXPATHLEN]; 772 const char *machine = getenv("MACHINE"); 773 const char *machine_arch = getenv("MACHINE_ARCH"); 774 char *syspath = getenv("MAKESYSPATH"); 775 Lst sysMkPath; /* Path of sys.mk */ 776 char *cp = NULL, *start; 777 /* avoid faults on read-only strings */ 778 static char defsyspath[] = _PATH_DEFSYSPATH; 779 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 780 struct timeval rightnow; /* to initialize random seed */ 781 #ifdef MAKE_NATIVE 782 struct utsname utsname; 783 #endif 784 785 /* default to writing debug to stderr */ 786 debug_file = stderr; 787 788 #ifdef SIGINFO 789 (void)bmake_signal(SIGINFO, siginfo); 790 #endif 791 /* 792 * Set the seed to produce a different random sequence 793 * on each program execution. 794 */ 795 gettimeofday(&rightnow, NULL); 796 srandom(rightnow.tv_sec + rightnow.tv_usec); 797 798 if ((progname = strrchr(argv[0], '/')) != NULL) 799 progname++; 800 else 801 progname = argv[0]; 802 #ifdef RLIMIT_NOFILE 803 /* 804 * get rid of resource limit on file descriptors 805 */ 806 { 807 struct rlimit rl; 808 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 809 rl.rlim_cur != rl.rlim_max) { 810 rl.rlim_cur = rl.rlim_max; 811 (void)setrlimit(RLIMIT_NOFILE, &rl); 812 } 813 } 814 #endif 815 816 /* 817 * Get the name of this type of MACHINE from utsname 818 * so we can share an executable for similar machines. 819 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 820 * 821 * Note that both MACHINE and MACHINE_ARCH are decided at 822 * run-time. 823 */ 824 if (!machine) { 825 #ifdef MAKE_NATIVE 826 if (uname(&utsname) == -1) { 827 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 828 strerror(errno)); 829 exit(2); 830 } 831 machine = utsname.machine; 832 #else 833 #ifdef MAKE_MACHINE 834 machine = MAKE_MACHINE; 835 #else 836 machine = "unknown"; 837 #endif 838 #endif 839 } 840 841 if (!machine_arch) { 842 #ifndef MACHINE_ARCH 843 #ifdef MAKE_MACHINE_ARCH 844 machine_arch = MAKE_MACHINE_ARCH; 845 #else 846 machine_arch = "unknown"; 847 #endif 848 #else 849 machine_arch = MACHINE_ARCH; 850 #endif 851 } 852 853 myPid = getpid(); /* remember this for vFork() */ 854 855 /* 856 * Just in case MAKEOBJDIR wants us to do something tricky. 857 */ 858 Var_Init(); /* Initialize the lists of variables for 859 * parsing arguments */ 860 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 861 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 862 #ifdef MAKE_VERSION 863 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 864 #endif 865 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 866 /* 867 * This is the traditional preference for makefiles. 868 */ 869 #ifndef MAKEFILE_PREFERENCE_LIST 870 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 871 #endif 872 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 873 VAR_GLOBAL, 0); 874 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 875 876 create = Lst_Init(FALSE); 877 makefiles = Lst_Init(FALSE); 878 printVars = FALSE; 879 variables = Lst_Init(FALSE); 880 beSilent = FALSE; /* Print commands as executed */ 881 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 882 noExecute = FALSE; /* Execute all commands */ 883 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 884 keepgoing = FALSE; /* Stop on error */ 885 allPrecious = FALSE; /* Remove targets when interrupted */ 886 queryFlag = FALSE; /* This is not just a check-run */ 887 noBuiltins = FALSE; /* Read the built-in rules */ 888 touchFlag = FALSE; /* Actually update targets */ 889 debug = 0; /* No debug verbosity, please. */ 890 jobsRunning = FALSE; 891 892 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 893 maxJobTokens = maxJobs; 894 compatMake = FALSE; /* No compat mode */ 895 ignorePWD = FALSE; 896 897 /* 898 * Initialize the parsing, directory and variable modules to prepare 899 * for the reading of inclusion paths and variable settings on the 900 * command line 901 */ 902 903 /* 904 * Initialize various variables. 905 * MAKE also gets this name, for compatibility 906 * .MAKEFLAGS gets set to the empty string just in case. 907 * MFLAGS also gets initialized empty, for compatibility. 908 */ 909 Parse_Init(); 910 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 911 /* 912 * Leave alone if it is an absolute path, or if it does 913 * not contain a '/' in which case we need to find it in 914 * the path, like execvp(3) and the shells do. 915 */ 916 p1 = argv[0]; 917 } else { 918 /* 919 * A relative path, canonicalize it. 920 */ 921 p1 = realpath(argv[0], mdpath); 922 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 923 p1 = argv[0]; /* realpath failed */ 924 } 925 } 926 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 927 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 928 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 929 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 930 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 931 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 932 933 /* 934 * Set some other useful macros 935 */ 936 { 937 char tmp[64]; 938 const char *ep; 939 940 if (!(ep = getenv(MAKE_LEVEL))) { 941 ep = "0"; 942 } 943 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0); 944 snprintf(tmp, sizeof(tmp), "%u", myPid); 945 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 946 snprintf(tmp, sizeof(tmp), "%u", getppid()); 947 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 948 } 949 Job_SetPrefix(); 950 951 /* 952 * First snag any flags out of the MAKE environment variable. 953 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 954 * in a different format). 955 */ 956 #ifdef POSIX 957 Main_ParseArgLine(getenv("MAKEFLAGS")); 958 #else 959 Main_ParseArgLine(getenv("MAKE")); 960 #endif 961 962 /* 963 * Find where we are (now). 964 * We take care of PWD for the automounter below... 965 */ 966 if (getcwd(curdir, MAXPATHLEN) == NULL) { 967 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 968 exit(2); 969 } 970 971 MainParseArgs(argc, argv); 972 973 /* 974 * Verify that cwd is sane. 975 */ 976 if (stat(curdir, &sa) == -1) { 977 (void)fprintf(stderr, "%s: %s: %s.\n", 978 progname, curdir, strerror(errno)); 979 exit(2); 980 } 981 982 /* 983 * All this code is so that we know where we are when we start up 984 * on a different machine with pmake. 985 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 986 * since the value of curdir can vary depending on how we got 987 * here. Ie sitting at a shell prompt (shell that provides $PWD) 988 * or via subdir.mk in which case its likely a shell which does 989 * not provide it. 990 * So, to stop it breaking this case only, we ignore PWD if 991 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 992 */ 993 if (!ignorePWD && 994 (pwd = getenv("PWD")) != NULL && 995 getenv("MAKEOBJDIRPREFIX") == NULL) { 996 const char *makeobjdir = getenv("MAKEOBJDIR"); 997 998 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 999 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 1000 sa.st_dev == sb.st_dev) 1001 (void)strncpy(curdir, pwd, MAXPATHLEN); 1002 } 1003 } 1004 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1005 1006 /* 1007 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1008 * MAKEOBJDIR is set in the environment, try only that value 1009 * and fall back to .CURDIR if it does not exist. 1010 * 1011 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1012 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1013 * of these paths exist, just use .CURDIR. 1014 */ 1015 Dir_Init(curdir); 1016 (void)Main_SetObjdir(curdir); 1017 1018 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1019 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1020 (void)Main_SetObjdir(mdpath); 1021 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1022 (void)Main_SetObjdir(path); 1023 } else { 1024 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1025 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1026 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1027 _PATH_OBJDIRPREFIX, curdir); 1028 (void)Main_SetObjdir(mdpath); 1029 } 1030 } 1031 1032 /* 1033 * Be compatible if user did not specify -j and did not explicitly 1034 * turned compatibility on 1035 */ 1036 if (!compatMake && !forceJobs) { 1037 compatMake = TRUE; 1038 } 1039 1040 /* 1041 * Initialize archive, target and suffix modules in preparation for 1042 * parsing the makefile(s) 1043 */ 1044 Arch_Init(); 1045 Targ_Init(); 1046 Suff_Init(); 1047 Trace_Init(tracefile); 1048 1049 DEFAULT = NULL; 1050 (void)time(&now); 1051 1052 Trace_Log(MAKESTART, NULL); 1053 1054 /* 1055 * Set up the .TARGETS variable to contain the list of targets to be 1056 * created. If none specified, make the variable empty -- the parser 1057 * will fill the thing in with the default or .MAIN target. 1058 */ 1059 if (!Lst_IsEmpty(create)) { 1060 LstNode ln; 1061 1062 for (ln = Lst_First(create); ln != NULL; 1063 ln = Lst_Succ(ln)) { 1064 char *name = (char *)Lst_Datum(ln); 1065 1066 Var_Append(".TARGETS", name, VAR_GLOBAL); 1067 } 1068 } else 1069 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1070 1071 1072 /* 1073 * If no user-supplied system path was given (through the -m option) 1074 * add the directories from the DEFSYSPATH (more than one may be given 1075 * as dir1:...:dirn) to the system include path. 1076 */ 1077 if (syspath == NULL || *syspath == '\0') 1078 syspath = defsyspath; 1079 else 1080 syspath = bmake_strdup(syspath); 1081 1082 for (start = syspath; *start != '\0'; start = cp) { 1083 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1084 continue; 1085 if (*cp == ':') { 1086 *cp++ = '\0'; 1087 } 1088 /* look for magic parent directory search string */ 1089 if (strncmp(".../", start, 4) != 0) { 1090 (void)Dir_AddDir(defIncPath, start); 1091 } else { 1092 if (Dir_FindHereOrAbove(curdir, start+4, 1093 found_path, sizeof(found_path))) { 1094 (void)Dir_AddDir(defIncPath, found_path); 1095 } 1096 } 1097 } 1098 if (syspath != defsyspath) 1099 free(syspath); 1100 1101 /* 1102 * Read in the built-in rules first, followed by the specified 1103 * makefile, if it was (makefile != NULL), or the default 1104 * makefile and Makefile, in that order, if it wasn't. 1105 */ 1106 if (!noBuiltins) { 1107 LstNode ln; 1108 1109 sysMkPath = Lst_Init(FALSE); 1110 Dir_Expand(_PATH_DEFSYSMK, 1111 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1112 sysMkPath); 1113 if (Lst_IsEmpty(sysMkPath)) 1114 Fatal("%s: no system rules (%s).", progname, 1115 _PATH_DEFSYSMK); 1116 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1117 if (ln == NULL) 1118 Fatal("%s: cannot open %s.", progname, 1119 (char *)Lst_Datum(ln)); 1120 } 1121 1122 if (!Lst_IsEmpty(makefiles)) { 1123 LstNode ln; 1124 1125 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1126 if (ln != NULL) 1127 Fatal("%s: cannot open %s.", progname, 1128 (char *)Lst_Datum(ln)); 1129 } else { 1130 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1131 VAR_CMD, 0); 1132 if (p1) { 1133 (void)str2Lst_Append(makefiles, p1, NULL); 1134 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1135 free(p1); 1136 } 1137 } 1138 1139 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1140 if (!noBuiltins || !printVars) { 1141 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1142 VAR_CMD, 0); 1143 doing_depend = TRUE; 1144 (void)ReadMakefile(makeDependfile, NULL); 1145 doing_depend = FALSE; 1146 } 1147 1148 MakeMode(NULL); 1149 1150 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1151 if (p1) 1152 free(p1); 1153 1154 if (!compatMake) 1155 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1156 if (DEBUG(JOB)) 1157 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1158 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1159 1160 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1161 1162 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1163 1164 1165 /* 1166 * For compatibility, look at the directories in the VPATH variable 1167 * and add them to the search path, if the variable is defined. The 1168 * variable's value is in the same format as the PATH envariable, i.e. 1169 * <directory>:<directory>:<directory>... 1170 */ 1171 if (Var_Exists("VPATH", VAR_CMD)) { 1172 char *vpath, savec; 1173 /* 1174 * GCC stores string constants in read-only memory, but 1175 * Var_Subst will want to write this thing, so store it 1176 * in an array 1177 */ 1178 static char VPATH[] = "${VPATH}"; 1179 1180 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1181 path = vpath; 1182 do { 1183 /* skip to end of directory */ 1184 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1185 continue; 1186 /* Save terminator character so know when to stop */ 1187 savec = *cp; 1188 *cp = '\0'; 1189 /* Add directory to search path */ 1190 (void)Dir_AddDir(dirSearchPath, path); 1191 *cp = savec; 1192 path = cp + 1; 1193 } while (savec == ':'); 1194 free(vpath); 1195 } 1196 1197 /* 1198 * Now that all search paths have been read for suffixes et al, it's 1199 * time to add the default search path to their lists... 1200 */ 1201 Suff_DoPaths(); 1202 1203 /* 1204 * Propagate attributes through :: dependency lists. 1205 */ 1206 Targ_Propagate(); 1207 1208 /* print the initial graph, if the user requested it */ 1209 if (DEBUG(GRAPH1)) 1210 Targ_PrintGraph(1); 1211 1212 /* print the values of any variables requested by the user */ 1213 if (printVars) { 1214 LstNode ln; 1215 1216 for (ln = Lst_First(variables); ln != NULL; 1217 ln = Lst_Succ(ln)) { 1218 char *var = (char *)Lst_Datum(ln); 1219 char *value; 1220 1221 if (strchr(var, '$')) { 1222 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1223 } else { 1224 value = Var_Value(var, VAR_GLOBAL, &p1); 1225 } 1226 printf("%s\n", value ? value : ""); 1227 if (p1) 1228 free(p1); 1229 } 1230 } else { 1231 /* 1232 * Have now read the entire graph and need to make a list of 1233 * targets to create. If none was given on the command line, 1234 * we consult the parsing module to find the main target(s) 1235 * to create. 1236 */ 1237 if (Lst_IsEmpty(create)) 1238 targs = Parse_MainName(); 1239 else 1240 targs = Targ_FindList(create, TARG_CREATE); 1241 1242 if (!compatMake) { 1243 /* 1244 * Initialize job module before traversing the graph 1245 * now that any .BEGIN and .END targets have been read. 1246 * This is done only if the -q flag wasn't given 1247 * (to prevent the .BEGIN from being executed should 1248 * it exist). 1249 */ 1250 if (!queryFlag) { 1251 Job_Init(); 1252 jobsRunning = TRUE; 1253 } 1254 1255 /* Traverse the graph, checking on all the targets */ 1256 outOfDate = Make_Run(targs); 1257 } else { 1258 /* 1259 * Compat_Init will take care of creating all the 1260 * targets as well as initializing the module. 1261 */ 1262 Compat_Run(targs); 1263 } 1264 } 1265 1266 #ifdef CLEANUP 1267 Lst_Destroy(targs, NULL); 1268 Lst_Destroy(variables, NULL); 1269 Lst_Destroy(makefiles, NULL); 1270 Lst_Destroy(create, (FreeProc *)free); 1271 #endif 1272 1273 /* print the graph now it's been processed if the user requested it */ 1274 if (DEBUG(GRAPH2)) 1275 Targ_PrintGraph(2); 1276 1277 Trace_Log(MAKEEND, 0); 1278 1279 Suff_End(); 1280 Targ_End(); 1281 Arch_End(); 1282 Var_End(); 1283 Parse_End(); 1284 Dir_End(); 1285 Job_End(); 1286 Trace_End(); 1287 1288 return outOfDate ? 1 : 0; 1289 } 1290 1291 /*- 1292 * ReadMakefile -- 1293 * Open and parse the given makefile. 1294 * 1295 * Results: 1296 * 0 if ok. -1 if couldn't open file. 1297 * 1298 * Side Effects: 1299 * lots 1300 */ 1301 static int 1302 ReadMakefile(const void *p, const void *q __unused) 1303 { 1304 const char *fname = p; /* makefile to read */ 1305 int fd; 1306 size_t len = MAXPATHLEN; 1307 char *name, *path = bmake_malloc(len); 1308 1309 if (!strcmp(fname, "-")) { 1310 Parse_File("(stdin)", dup(fileno(stdin))); 1311 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1312 } else { 1313 /* if we've chdir'd, rebuild the path name */ 1314 if (strcmp(curdir, objdir) && *fname != '/') { 1315 size_t plen = strlen(curdir) + strlen(fname) + 2; 1316 if (len < plen) 1317 path = bmake_realloc(path, len = 2 * plen); 1318 1319 (void)snprintf(path, len, "%s/%s", curdir, fname); 1320 fd = open(path, O_RDONLY); 1321 if (fd != -1) { 1322 fname = path; 1323 goto found; 1324 } 1325 1326 /* If curdir failed, try objdir (ala .depend) */ 1327 plen = strlen(objdir) + strlen(fname) + 2; 1328 if (len < plen) 1329 path = bmake_realloc(path, len = 2 * plen); 1330 (void)snprintf(path, len, "%s/%s", objdir, fname); 1331 fd = open(path, O_RDONLY); 1332 if (fd != -1) { 1333 fname = path; 1334 goto found; 1335 } 1336 } else { 1337 fd = open(fname, O_RDONLY); 1338 if (fd != -1) 1339 goto found; 1340 } 1341 /* look in -I and system include directories. */ 1342 name = Dir_FindFile(fname, parseIncPath); 1343 if (!name) 1344 name = Dir_FindFile(fname, 1345 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1346 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1347 if (name) 1348 free(name); 1349 free(path); 1350 return(-1); 1351 } 1352 fname = name; 1353 /* 1354 * set the MAKEFILE variable desired by System V fans -- the 1355 * placement of the setting here means it gets set to the last 1356 * makefile specified, as it is set by SysV make. 1357 */ 1358 found: 1359 if (!doing_depend) 1360 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1361 Parse_File(fname, fd); 1362 } 1363 free(path); 1364 return(0); 1365 } 1366 1367 1368 /* 1369 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1370 * in situations that would not arrise with ./obj (links or not). 1371 * This tends to break things like: 1372 * 1373 * build: 1374 * ${MAKE} includes 1375 * 1376 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1377 * opposed to an argument) in a command line and if so returns 1378 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1379 * the Makefile hold true. 1380 * 1381 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1382 * 1383 * The chdir() only happens in the child process, and does nothing if 1384 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1385 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1386 * do nothing - to ensure historic semantics can be retained. 1387 */ 1388 static int Check_Cwd_Off = 0; 1389 1390 static char * 1391 Check_Cwd_av(int ac, char **av, int copy) 1392 { 1393 static char *make[4]; 1394 static char *cur_dir = NULL; 1395 char **mp; 1396 char *cp; 1397 int is_cmd, next_cmd; 1398 int i; 1399 int n; 1400 1401 if (Check_Cwd_Off) { 1402 if (DEBUG(CWD)) 1403 fprintf(debug_file, "check_cwd: check is off.\n"); 1404 return NULL; 1405 } 1406 1407 if (make[0] == NULL) { 1408 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1409 Check_Cwd_Off = 1; 1410 if (DEBUG(CWD)) 1411 fprintf(debug_file, "check_cwd: turning check off.\n"); 1412 return NULL; 1413 } 1414 1415 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1416 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1417 make[0] = make[1]; 1418 make[1] = NULL; 1419 } else 1420 ++make[0]; 1421 make[2] = NULL; 1422 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1423 } 1424 if (ac == 0 || av == NULL) { 1425 if (DEBUG(CWD)) 1426 fprintf(debug_file, "check_cwd: empty command.\n"); 1427 return NULL; /* initialization only */ 1428 } 1429 1430 if (getenv("MAKEOBJDIR") == NULL && 1431 getenv("MAKEOBJDIRPREFIX") == NULL) { 1432 if (DEBUG(CWD)) 1433 fprintf(debug_file, "check_cwd: no obj dirs.\n"); 1434 return NULL; 1435 } 1436 1437 1438 next_cmd = 1; 1439 for (i = 0; i < ac; ++i) { 1440 is_cmd = next_cmd; 1441 1442 n = strlen(av[i]); 1443 cp = &(av[i])[n - 1]; 1444 if (strspn(av[i], "|&;") == (size_t)n) { 1445 next_cmd = 1; 1446 continue; 1447 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1448 next_cmd = 1; 1449 if (copy) { 1450 do { 1451 *cp-- = '\0'; 1452 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1453 *cp == ')' || *cp == '}') ; 1454 } else { 1455 /* 1456 * XXX this should not happen. 1457 */ 1458 fprintf(stderr, "%s: WARNING: raw arg ends in shell meta '%s'\n", 1459 progname, av[i]); 1460 } 1461 } else 1462 next_cmd = 0; 1463 1464 cp = av[i]; 1465 if (*cp == ';' || *cp == '&' || *cp == '|') 1466 is_cmd = 1; 1467 1468 if (DEBUG(CWD)) 1469 fprintf(debug_file, "av[%d] == %s '%s'", 1470 i, (is_cmd) ? "cmd" : "arg", av[i]); 1471 if (is_cmd != 0) { 1472 if (*cp == '(' || *cp == '{' || 1473 *cp == ';' || *cp == '&' || *cp == '|') { 1474 do { 1475 ++cp; 1476 } while (*cp == '(' || *cp == '{' || 1477 *cp == ';' || *cp == '&' || *cp == '|'); 1478 if (*cp == '\0') { 1479 next_cmd = 1; 1480 continue; 1481 } 1482 } 1483 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1484 if (DEBUG(CWD)) 1485 fprintf(debug_file, " == cd, done.\n"); 1486 return NULL; 1487 } 1488 for (mp = make; *mp != NULL; ++mp) { 1489 n = strlen(*mp); 1490 if (strcmp(cp, *mp) == 0) { 1491 if (DEBUG(CWD)) 1492 fprintf(debug_file, " %s == '%s', chdir(%s)\n", 1493 cp, *mp, cur_dir); 1494 return cur_dir; 1495 } 1496 } 1497 } 1498 if (DEBUG(CWD)) 1499 fprintf(debug_file, "\n"); 1500 } 1501 return NULL; 1502 } 1503 1504 char * 1505 Check_Cwd_Cmd(const char *cmd) 1506 { 1507 char *cp, *bp; 1508 char **av; 1509 int ac; 1510 1511 if (Check_Cwd_Off) 1512 return NULL; 1513 1514 if (cmd) { 1515 av = brk_string(cmd, &ac, TRUE, &bp); 1516 if (DEBUG(CWD)) 1517 fprintf(debug_file, "splitting: '%s' -> %d words\n", 1518 cmd, ac); 1519 } else { 1520 ac = 0; 1521 av = NULL; 1522 bp = NULL; 1523 } 1524 cp = Check_Cwd_av(ac, av, 1); 1525 if (bp) 1526 free(bp); 1527 if (av) 1528 free(av); 1529 return cp; 1530 } 1531 1532 void 1533 Check_Cwd(const char **argv) 1534 { 1535 char *cp; 1536 int ac; 1537 1538 if (Check_Cwd_Off) 1539 return; 1540 1541 for (ac = 0; argv[ac] != NULL; ++ac) 1542 /* NOTHING */; 1543 if (ac == 3 && *argv[1] == '-') { 1544 cp = Check_Cwd_Cmd(argv[2]); 1545 } else { 1546 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1547 } 1548 if (cp) { 1549 chdir(cp); 1550 } 1551 } 1552 1553 /*- 1554 * Cmd_Exec -- 1555 * Execute the command in cmd, and return the output of that command 1556 * in a string. 1557 * 1558 * Results: 1559 * A string containing the output of the command, or the empty string 1560 * If errnum is not NULL, it contains the reason for the command failure 1561 * 1562 * Side Effects: 1563 * The string must be freed by the caller. 1564 */ 1565 char * 1566 Cmd_Exec(const char *cmd, const char **errnum) 1567 { 1568 const char *args[4]; /* Args for invoking the shell */ 1569 int fds[2]; /* Pipe streams */ 1570 int cpid; /* Child PID */ 1571 int pid; /* PID from wait() */ 1572 char *res; /* result */ 1573 int status; /* command exit status */ 1574 Buffer buf; /* buffer to store the result */ 1575 char *cp; 1576 int cc; 1577 1578 1579 *errnum = NULL; 1580 1581 if (!shellName) 1582 Shell_Init(); 1583 /* 1584 * Set up arguments for shell 1585 */ 1586 args[0] = shellName; 1587 args[1] = "-c"; 1588 args[2] = cmd; 1589 args[3] = NULL; 1590 1591 /* 1592 * Open a pipe for fetching its output 1593 */ 1594 if (pipe(fds) == -1) { 1595 *errnum = "Couldn't create pipe for \"%s\""; 1596 goto bad; 1597 } 1598 1599 /* 1600 * Fork 1601 */ 1602 switch (cpid = vFork()) { 1603 case 0: 1604 /* 1605 * Close input side of pipe 1606 */ 1607 (void)close(fds[0]); 1608 1609 /* 1610 * Duplicate the output stream to the shell's output, then 1611 * shut the extra thing down. Note we don't fetch the error 1612 * stream...why not? Why? 1613 */ 1614 (void)dup2(fds[1], 1); 1615 (void)close(fds[1]); 1616 1617 Var_ExportVars(); 1618 1619 (void)execv(shellPath, UNCONST(args)); 1620 _exit(1); 1621 /*NOTREACHED*/ 1622 1623 case -1: 1624 *errnum = "Couldn't exec \"%s\""; 1625 goto bad; 1626 1627 default: 1628 /* 1629 * No need for the writing half 1630 */ 1631 (void)close(fds[1]); 1632 1633 Buf_Init(&buf, 0); 1634 1635 do { 1636 char result[BUFSIZ]; 1637 cc = read(fds[0], result, sizeof(result)); 1638 if (cc > 0) 1639 Buf_AddBytes(&buf, cc, result); 1640 } 1641 while (cc > 0 || (cc == -1 && errno == EINTR)); 1642 1643 /* 1644 * Close the input side of the pipe. 1645 */ 1646 (void)close(fds[0]); 1647 1648 /* 1649 * Wait for the process to exit. 1650 */ 1651 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1652 JobReapChild(pid, status, FALSE); 1653 continue; 1654 } 1655 cc = Buf_Size(&buf); 1656 res = Buf_Destroy(&buf, FALSE); 1657 1658 if (cc == 0) 1659 *errnum = "Couldn't read shell's output for \"%s\""; 1660 1661 if (WIFSIGNALED(status)) 1662 *errnum = "\"%s\" exited on a signal"; 1663 else if (WEXITSTATUS(status) != 0) 1664 *errnum = "\"%s\" returned non-zero status"; 1665 1666 /* 1667 * Null-terminate the result, convert newlines to spaces and 1668 * install it in the variable. 1669 */ 1670 res[cc] = '\0'; 1671 cp = &res[cc]; 1672 1673 if (cc > 0 && *--cp == '\n') { 1674 /* 1675 * A final newline is just stripped 1676 */ 1677 *cp-- = '\0'; 1678 } 1679 while (cp >= res) { 1680 if (*cp == '\n') { 1681 *cp = ' '; 1682 } 1683 cp--; 1684 } 1685 break; 1686 } 1687 return res; 1688 bad: 1689 res = bmake_malloc(1); 1690 *res = '\0'; 1691 return res; 1692 } 1693 1694 /*- 1695 * Error -- 1696 * Print an error message given its format. 1697 * 1698 * Results: 1699 * None. 1700 * 1701 * Side Effects: 1702 * The message is printed. 1703 */ 1704 /* VARARGS */ 1705 void 1706 Error(const char *fmt, ...) 1707 { 1708 va_list ap; 1709 FILE *err_file; 1710 1711 err_file = debug_file; 1712 if (err_file == stdout) 1713 err_file = stderr; 1714 (void)fflush(stdout); 1715 for (;;) { 1716 va_start(ap, fmt); 1717 fprintf(err_file, "%s: ", progname); 1718 (void)vfprintf(err_file, fmt, ap); 1719 va_end(ap); 1720 (void)fprintf(err_file, "\n"); 1721 (void)fflush(err_file); 1722 if (err_file == stderr) 1723 break; 1724 err_file = stderr; 1725 } 1726 } 1727 1728 /*- 1729 * Fatal -- 1730 * Produce a Fatal error message. If jobs are running, waits for them 1731 * to finish. 1732 * 1733 * Results: 1734 * None 1735 * 1736 * Side Effects: 1737 * The program exits 1738 */ 1739 /* VARARGS */ 1740 void 1741 Fatal(const char *fmt, ...) 1742 { 1743 va_list ap; 1744 1745 va_start(ap, fmt); 1746 if (jobsRunning) 1747 Job_Wait(); 1748 1749 (void)fflush(stdout); 1750 (void)vfprintf(stderr, fmt, ap); 1751 va_end(ap); 1752 (void)fprintf(stderr, "\n"); 1753 (void)fflush(stderr); 1754 1755 PrintOnError(NULL, NULL); 1756 1757 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1758 Targ_PrintGraph(2); 1759 Trace_Log(MAKEERROR, 0); 1760 exit(2); /* Not 1 so -q can distinguish error */ 1761 } 1762 1763 /* 1764 * Punt -- 1765 * Major exception once jobs are being created. Kills all jobs, prints 1766 * a message and exits. 1767 * 1768 * Results: 1769 * None 1770 * 1771 * Side Effects: 1772 * All children are killed indiscriminately and the program Lib_Exits 1773 */ 1774 /* VARARGS */ 1775 void 1776 Punt(const char *fmt, ...) 1777 { 1778 va_list ap; 1779 1780 va_start(ap, fmt); 1781 (void)fflush(stdout); 1782 (void)fprintf(stderr, "%s: ", progname); 1783 (void)vfprintf(stderr, fmt, ap); 1784 va_end(ap); 1785 (void)fprintf(stderr, "\n"); 1786 (void)fflush(stderr); 1787 1788 PrintOnError(NULL, NULL); 1789 1790 DieHorribly(); 1791 } 1792 1793 /*- 1794 * DieHorribly -- 1795 * Exit without giving a message. 1796 * 1797 * Results: 1798 * None 1799 * 1800 * Side Effects: 1801 * A big one... 1802 */ 1803 void 1804 DieHorribly(void) 1805 { 1806 if (jobsRunning) 1807 Job_AbortAll(); 1808 if (DEBUG(GRAPH2)) 1809 Targ_PrintGraph(2); 1810 Trace_Log(MAKEERROR, 0); 1811 exit(2); /* Not 1, so -q can distinguish error */ 1812 } 1813 1814 /* 1815 * Finish -- 1816 * Called when aborting due to errors in child shell to signal 1817 * abnormal exit. 1818 * 1819 * Results: 1820 * None 1821 * 1822 * Side Effects: 1823 * The program exits 1824 */ 1825 void 1826 Finish(int errors) 1827 /* number of errors encountered in Make_Make */ 1828 { 1829 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1830 } 1831 1832 /* 1833 * enunlink -- 1834 * Remove a file carefully, avoiding directories. 1835 */ 1836 int 1837 eunlink(const char *file) 1838 { 1839 struct stat st; 1840 1841 if (lstat(file, &st) == -1) 1842 return -1; 1843 1844 if (S_ISDIR(st.st_mode)) { 1845 errno = EISDIR; 1846 return -1; 1847 } 1848 return unlink(file); 1849 } 1850 1851 /* 1852 * execError -- 1853 * Print why exec failed, avoiding stdio. 1854 */ 1855 void 1856 execError(const char *af, const char *av) 1857 { 1858 #ifdef USE_IOVEC 1859 int i = 0; 1860 struct iovec iov[8]; 1861 #define IOADD(s) \ 1862 (void)(iov[i].iov_base = UNCONST(s), \ 1863 iov[i].iov_len = strlen(iov[i].iov_base), \ 1864 i++) 1865 #else 1866 #define IOADD(void)write(2, s, strlen(s)) 1867 #endif 1868 1869 IOADD(progname); 1870 IOADD(": "); 1871 IOADD(af); 1872 IOADD("("); 1873 IOADD(av); 1874 IOADD(") failed ("); 1875 IOADD(strerror(errno)); 1876 IOADD(")\n"); 1877 1878 #ifdef USE_IOVEC 1879 (void)writev(2, iov, 8); 1880 #endif 1881 } 1882 1883 /* 1884 * usage -- 1885 * exit with usage message 1886 */ 1887 static void 1888 usage(void) 1889 { 1890 (void)fprintf(stderr, 1891 "usage: %s [-BeikNnqrstWX] \n\ 1892 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1893 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1894 [-V variable] [variable=value] [target ...]\n", progname); 1895 exit(2); 1896 } 1897 1898 1899 int 1900 PrintAddr(void *a, void *b) 1901 { 1902 printf("%lx ", (unsigned long) a); 1903 return b ? 0 : 0; 1904 } 1905 1906 1907 1908 void 1909 PrintOnError(GNode *gn, const char *s) 1910 { 1911 static GNode *en = NULL; 1912 char tmp[64]; 1913 char *cp; 1914 1915 if (s) 1916 printf("%s", s); 1917 1918 printf("\n%s: stopped in %s\n", progname, curdir); 1919 1920 if (en) 1921 return; /* we've been here! */ 1922 if (gn) { 1923 /* 1924 * We can print this even if there is no .ERROR target. 1925 */ 1926 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1927 } 1928 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1929 sizeof(tmp) - 1); 1930 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1931 if (cp) { 1932 if (*cp) 1933 printf("%s", cp); 1934 free(cp); 1935 } 1936 /* 1937 * Finally, see if there is a .ERROR target, and run it if so. 1938 */ 1939 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1940 if (en) { 1941 en->type |= OP_SPECIAL; 1942 Compat_Make(en, en); 1943 } 1944 } 1945 1946 void 1947 Main_ExportMAKEFLAGS(Boolean first) 1948 { 1949 static int once = 1; 1950 char tmp[64]; 1951 char *s; 1952 1953 if (once != first) 1954 return; 1955 once = 0; 1956 1957 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1958 sizeof(tmp)); 1959 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1960 if (s && *s) { 1961 #ifdef POSIX 1962 setenv("MAKEFLAGS", s, 1); 1963 #else 1964 setenv("MAKE", s, 1); 1965 #endif 1966 } 1967 } 1968 1969 char * 1970 getTmpdir(void) 1971 { 1972 static char *tmpdir = NULL; 1973 1974 if (!tmpdir) { 1975 struct stat st; 1976 1977 /* 1978 * Honor $TMPDIR but only if it is valid. 1979 * Ensure it ends with /. 1980 */ 1981 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1982 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1983 free(tmpdir); 1984 tmpdir = bmake_strdup(_PATH_TMP); 1985 } 1986 } 1987 return tmpdir; 1988 } 1989 1990 /* 1991 * Create and open a temp file using "pattern". 1992 * If "fnamep" is provided set it to a copy of the filename created. 1993 * Otherwise unlink the file once open. 1994 */ 1995 int 1996 mkTempFile(const char *pattern, char **fnamep) 1997 { 1998 static char *tmpdir = NULL; 1999 char tfile[MAXPATHLEN]; 2000 int fd; 2001 2002 if (!pattern) 2003 pattern = TMPPAT; 2004 if (!tmpdir) 2005 tmpdir = getTmpdir(); 2006 if (pattern[0] == '/') { 2007 snprintf(tfile, sizeof(tfile), "%s", pattern); 2008 } else { 2009 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2010 } 2011 if ((fd = mkstemp(tfile)) < 0) 2012 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2013 if (fnamep) { 2014 *fnamep = bmake_strdup(tfile); 2015 } else { 2016 unlink(tfile); /* we just want the descriptor */ 2017 } 2018 return fd; 2019 } 2020
Indexes created Mon Sep 22 13:09:51 GMT 2025