1 /* $NetBSD: main.c,v 1.205 2013/01/26 15:53:00 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.205 2013/01/26 15:53:00 christos 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 1.205 2013/01/26 15:53:00 christos Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and two optional 103 * arguments for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and two arguments. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and two arguments. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <signal.h> 121 #include <sys/stat.h> 122 #ifdef MAKE_NATIVE 123 #include <sys/utsname.h> 124 #endif 125 #include "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 debugVflag; /* -dV */ 163 Boolean noExecute; /* -n flag */ 164 Boolean noRecursiveExecute; /* -N flag */ 165 Boolean keepgoing; /* -k flag */ 166 Boolean queryFlag; /* -q flag */ 167 Boolean touchFlag; /* -t flag */ 168 Boolean ignoreErrors; /* -i flag */ 169 Boolean beSilent; /* -s flag */ 170 Boolean oldVars; /* variable substitution style */ 171 Boolean checkEnvFirst; /* -e flag */ 172 Boolean parseWarnFatal; /* -W flag */ 173 Boolean jobServer; /* -J flag */ 174 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 175 Boolean varNoExportEnv; /* -X flag */ 176 Boolean doing_depend; /* Set while reading .depend */ 177 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 178 static const char * tracefile; 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 /* 193 * On some systems MACHINE is defined as something other than 194 * what we want. 195 */ 196 #ifdef FORCE_MACHINE 197 # undef MACHINE 198 # define MACHINE FORCE_MACHINE 199 #endif 200 201 extern Lst parseIncPath; 202 203 static void 204 parse_debug_options(const char *argvalue) 205 { 206 const char *modules; 207 const char *mode; 208 char *fname; 209 int len; 210 211 for (modules = argvalue; *modules; ++modules) { 212 switch (*modules) { 213 case 'A': 214 debug = ~0; 215 break; 216 case 'a': 217 debug |= DEBUG_ARCH; 218 break; 219 case 'C': 220 debug |= DEBUG_CWD; 221 break; 222 case 'c': 223 debug |= DEBUG_COND; 224 break; 225 case 'd': 226 debug |= DEBUG_DIR; 227 break; 228 case 'e': 229 debug |= DEBUG_ERROR; 230 break; 231 case 'f': 232 debug |= DEBUG_FOR; 233 break; 234 case 'g': 235 if (modules[1] == '1') { 236 debug |= DEBUG_GRAPH1; 237 ++modules; 238 } 239 else if (modules[1] == '2') { 240 debug |= DEBUG_GRAPH2; 241 ++modules; 242 } 243 else if (modules[1] == '3') { 244 debug |= DEBUG_GRAPH3; 245 ++modules; 246 } 247 break; 248 case 'j': 249 debug |= DEBUG_JOB; 250 break; 251 case 'l': 252 debug |= DEBUG_LOUD; 253 break; 254 case 'M': 255 debug |= DEBUG_META; 256 break; 257 case 'm': 258 debug |= DEBUG_MAKE; 259 break; 260 case 'n': 261 debug |= DEBUG_SCRIPT; 262 break; 263 case 'p': 264 debug |= DEBUG_PARSE; 265 break; 266 case 's': 267 debug |= DEBUG_SUFF; 268 break; 269 case 't': 270 debug |= DEBUG_TARG; 271 break; 272 case 'V': 273 debugVflag = TRUE; 274 break; 275 case 'v': 276 debug |= DEBUG_VAR; 277 break; 278 case 'x': 279 debug |= DEBUG_SHELL; 280 break; 281 case 'F': 282 if (debug_file != stdout && debug_file != stderr) 283 fclose(debug_file); 284 if (*++modules == '+') { 285 modules++; 286 mode = "a"; 287 } else 288 mode = "w"; 289 if (strcmp(modules, "stdout") == 0) { 290 debug_file = stdout; 291 goto debug_setbuf; 292 } 293 if (strcmp(modules, "stderr") == 0) { 294 debug_file = stderr; 295 goto debug_setbuf; 296 } 297 len = strlen(modules); 298 fname = malloc(len + 20); 299 memcpy(fname, modules, len + 1); 300 /* Let the filename be modified by the pid */ 301 if (strcmp(fname + len - 3, ".%d") == 0) 302 snprintf(fname + len - 2, 20, "%d", getpid()); 303 debug_file = fopen(fname, mode); 304 if (!debug_file) { 305 fprintf(stderr, "Cannot open debug file %s\n", 306 fname); 307 usage(); 308 } 309 free(fname); 310 goto debug_setbuf; 311 default: 312 (void)fprintf(stderr, 313 "%s: illegal argument to d option -- %c\n", 314 progname, *modules); 315 usage(); 316 } 317 } 318 debug_setbuf: 319 /* 320 * Make the debug_file unbuffered, and make 321 * stdout line buffered (unless debugfile == stdout). 322 */ 323 setvbuf(debug_file, NULL, _IONBF, 0); 324 if (debug_file != stdout) { 325 setvbuf(stdout, NULL, _IOLBF, 0); 326 } 327 } 328 329 /*- 330 * MainParseArgs -- 331 * Parse a given argument vector. Called from main() and from 332 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 333 * 334 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 335 * 336 * Results: 337 * None 338 * 339 * Side Effects: 340 * Various global and local flags will be set depending on the flags 341 * given 342 */ 343 static void 344 MainParseArgs(int argc, char **argv) 345 { 346 char *p; 347 int c = '?'; 348 int arginc; 349 char *argvalue; 350 const char *getopt_def; 351 char *optscan; 352 Boolean inOption, dashDash = FALSE; 353 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 354 355 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst" 356 /* Can't actually use getopt(3) because rescanning is not portable */ 357 358 getopt_def = OPTFLAGS; 359 rearg: 360 inOption = FALSE; 361 optscan = NULL; 362 while(argc > 1) { 363 char *getopt_spec; 364 if(!inOption) 365 optscan = argv[1]; 366 c = *optscan++; 367 arginc = 0; 368 if(inOption) { 369 if(c == '\0') { 370 ++argv; 371 --argc; 372 inOption = FALSE; 373 continue; 374 } 375 } else { 376 if (c != '-' || dashDash) 377 break; 378 inOption = TRUE; 379 c = *optscan++; 380 } 381 /* '-' found at some earlier point */ 382 getopt_spec = strchr(getopt_def, c); 383 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 384 /* -<something> found, and <something> should have an arg */ 385 inOption = FALSE; 386 arginc = 1; 387 argvalue = optscan; 388 if(*argvalue == '\0') { 389 if (argc < 3) 390 goto noarg; 391 argvalue = argv[2]; 392 arginc = 2; 393 } 394 } else { 395 argvalue = NULL; 396 } 397 switch(c) { 398 case '\0': 399 arginc = 1; 400 inOption = FALSE; 401 break; 402 case 'B': 403 compatMake = TRUE; 404 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 405 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 406 break; 407 case 'C': 408 if (chdir(argvalue) == -1) { 409 (void)fprintf(stderr, 410 "%s: chdir %s: %s\n", 411 progname, argvalue, 412 strerror(errno)); 413 exit(1); 414 } 415 if (getcwd(curdir, MAXPATHLEN) == NULL) { 416 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 417 exit(2); 418 } 419 ignorePWD = TRUE; 420 break; 421 case 'D': 422 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 423 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 424 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 425 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 426 break; 427 case 'I': 428 if (argvalue == NULL) goto noarg; 429 Parse_AddIncludeDir(argvalue); 430 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 431 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 432 break; 433 case 'J': 434 if (argvalue == NULL) goto noarg; 435 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 436 (void)fprintf(stderr, 437 "%s: internal error -- J option malformed (%s)\n", 438 progname, argvalue); 439 usage(); 440 } 441 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 442 (fcntl(jp_1, F_GETFD, 0) < 0)) { 443 #if 0 444 (void)fprintf(stderr, 445 "%s: ###### warning -- J descriptors were closed!\n", 446 progname); 447 exit(2); 448 #endif 449 jp_0 = -1; 450 jp_1 = -1; 451 compatMake = TRUE; 452 } else { 453 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 454 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 455 jobServer = TRUE; 456 } 457 break; 458 case 'N': 459 noExecute = TRUE; 460 noRecursiveExecute = TRUE; 461 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 462 break; 463 case 'S': 464 keepgoing = FALSE; 465 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 466 break; 467 case 'T': 468 if (argvalue == NULL) goto noarg; 469 tracefile = bmake_strdup(argvalue); 470 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 471 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 472 break; 473 case 'V': 474 if (argvalue == NULL) goto noarg; 475 printVars = TRUE; 476 (void)Lst_AtEnd(variables, argvalue); 477 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 478 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 479 break; 480 case 'W': 481 parseWarnFatal = TRUE; 482 break; 483 case 'X': 484 varNoExportEnv = TRUE; 485 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 486 break; 487 case 'd': 488 if (argvalue == NULL) goto noarg; 489 /* If '-d-opts' don't pass to children */ 490 if (argvalue[0] == '-') 491 argvalue++; 492 else { 493 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 494 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 495 } 496 parse_debug_options(argvalue); 497 break; 498 case 'e': 499 checkEnvFirst = TRUE; 500 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 501 break; 502 case 'f': 503 if (argvalue == NULL) goto noarg; 504 (void)Lst_AtEnd(makefiles, argvalue); 505 break; 506 case 'i': 507 ignoreErrors = TRUE; 508 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 509 break; 510 case 'j': 511 if (argvalue == NULL) goto noarg; 512 forceJobs = TRUE; 513 maxJobs = strtol(argvalue, &p, 0); 514 if (*p != '\0' || maxJobs < 1) { 515 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 516 progname); 517 exit(1); 518 } 519 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 520 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 521 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 522 maxJobTokens = maxJobs; 523 break; 524 case 'k': 525 keepgoing = TRUE; 526 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 527 break; 528 case 'm': 529 if (argvalue == NULL) goto noarg; 530 /* look for magic parent directory search string */ 531 if (strncmp(".../", argvalue, 4) == 0) { 532 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 533 found_path, sizeof(found_path))) 534 break; /* nothing doing */ 535 (void)Dir_AddDir(sysIncPath, found_path); 536 } else { 537 (void)Dir_AddDir(sysIncPath, argvalue); 538 } 539 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 540 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 541 break; 542 case 'n': 543 noExecute = TRUE; 544 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 545 break; 546 case 'q': 547 queryFlag = TRUE; 548 /* Kind of nonsensical, wot? */ 549 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 550 break; 551 case 'r': 552 noBuiltins = TRUE; 553 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 554 break; 555 case 's': 556 beSilent = TRUE; 557 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 558 break; 559 case 't': 560 touchFlag = TRUE; 561 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 562 break; 563 case '-': 564 dashDash = TRUE; 565 break; 566 default: 567 case '?': 568 #ifndef MAKE_NATIVE 569 fprintf(stderr, "getopt(%s) -> %d (%c)\n", 570 OPTFLAGS, c, c); 571 #endif 572 usage(); 573 } 574 argv += arginc; 575 argc -= arginc; 576 } 577 578 oldVars = TRUE; 579 580 /* 581 * See if the rest of the arguments are variable assignments and 582 * perform them if so. Else take them to be targets and stuff them 583 * on the end of the "create" list. 584 */ 585 for (; argc > 1; ++argv, --argc) 586 if (Parse_IsVar(argv[1])) { 587 Parse_DoVar(argv[1], VAR_CMD); 588 } else { 589 if (!*argv[1]) 590 Punt("illegal (null) argument."); 591 if (*argv[1] == '-' && !dashDash) 592 goto rearg; 593 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 594 } 595 596 return; 597 noarg: 598 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 599 progname, c); 600 usage(); 601 } 602 603 /*- 604 * Main_ParseArgLine -- 605 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 606 * is encountered and by main() when reading the .MAKEFLAGS envariable. 607 * Takes a line of arguments and breaks it into its 608 * component words and passes those words and the number of them to the 609 * MainParseArgs function. 610 * The line should have all its leading whitespace removed. 611 * 612 * Input: 613 * line Line to fracture 614 * 615 * Results: 616 * None 617 * 618 * Side Effects: 619 * Only those that come from the various arguments. 620 */ 621 void 622 Main_ParseArgLine(const char *line) 623 { 624 char **argv; /* Manufactured argument vector */ 625 int argc; /* Number of arguments in argv */ 626 char *args; /* Space used by the args */ 627 char *buf, *p1; 628 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 629 size_t len; 630 631 if (line == NULL) 632 return; 633 for (; *line == ' '; ++line) 634 continue; 635 if (!*line) 636 return; 637 638 #ifndef POSIX 639 { 640 /* 641 * $MAKE may simply be naming the make(1) binary 642 */ 643 char *cp; 644 645 if (!(cp = strrchr(line, '/'))) 646 cp = line; 647 if ((cp = strstr(cp, "make")) && 648 strcmp(cp, "make") == 0) 649 return; 650 } 651 #endif 652 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 653 (void)snprintf(buf, len, "%s %s", argv0, line); 654 if (p1) 655 free(p1); 656 657 argv = brk_string(buf, &argc, TRUE, &args); 658 if (argv == NULL) { 659 Error("Unterminated quoted string [%s]", buf); 660 free(buf); 661 return; 662 } 663 free(buf); 664 MainParseArgs(argc, argv); 665 666 free(args); 667 free(argv); 668 } 669 670 Boolean 671 Main_SetObjdir(const char *path) 672 { 673 struct stat sb; 674 char *p = NULL; 675 char buf[MAXPATHLEN + 1]; 676 Boolean rc = FALSE; 677 678 /* expand variable substitutions */ 679 if (strchr(path, '$') != 0) { 680 snprintf(buf, MAXPATHLEN, "%s", path); 681 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 682 } 683 684 if (path[0] != '/') { 685 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 686 path = buf; 687 } 688 689 /* look for the directory and try to chdir there */ 690 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 691 if (chdir(path)) { 692 (void)fprintf(stderr, "make warning: %s: %s.\n", 693 path, strerror(errno)); 694 } else { 695 strncpy(objdir, path, MAXPATHLEN); 696 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 697 setenv("PWD", objdir, 1); 698 Dir_InitDot(); 699 rc = TRUE; 700 } 701 } 702 703 if (p) 704 free(p); 705 return rc; 706 } 707 708 /*- 709 * ReadAllMakefiles -- 710 * wrapper around ReadMakefile() to read all. 711 * 712 * Results: 713 * TRUE if ok, FALSE on error 714 */ 715 static int 716 ReadAllMakefiles(const void *p, const void *q) 717 { 718 return (ReadMakefile(p, q) == 0); 719 } 720 721 int 722 str2Lst_Append(Lst lp, char *str, const char *sep) 723 { 724 char *cp; 725 int n; 726 727 if (!sep) 728 sep = " \t"; 729 730 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 731 (void)Lst_AtEnd(lp, cp); 732 n++; 733 } 734 return (n); 735 } 736 737 #ifdef SIGINFO 738 /*ARGSUSED*/ 739 static void 740 siginfo(int signo MAKE_ATTR_UNUSED) 741 { 742 char dir[MAXPATHLEN]; 743 char str[2 * MAXPATHLEN]; 744 int len; 745 if (getcwd(dir, sizeof(dir)) == NULL) 746 return; 747 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 748 if (len > 0) 749 (void)write(STDERR_FILENO, str, (size_t)len); 750 } 751 #endif 752 753 /* 754 * Allow makefiles some control over the mode we run in. 755 */ 756 void 757 MakeMode(const char *mode) 758 { 759 char *mp = NULL; 760 761 if (!mode) 762 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 763 764 if (mode && *mode) { 765 if (strstr(mode, "compat")) { 766 compatMake = TRUE; 767 forceJobs = FALSE; 768 } 769 #if USE_META 770 if (strstr(mode, "meta")) 771 meta_init(mode); 772 #endif 773 } 774 if (mp) 775 free(mp); 776 } 777 778 /*- 779 * main -- 780 * The main function, for obvious reasons. Initializes variables 781 * and a few modules, then parses the arguments give it in the 782 * environment and on the command line. Reads the system makefile 783 * followed by either Makefile, makefile or the file given by the 784 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 785 * flags it has received by then uses either the Make or the Compat 786 * module to create the initial list of targets. 787 * 788 * Results: 789 * If -q was given, exits -1 if anything was out-of-date. Else it exits 790 * 0. 791 * 792 * Side Effects: 793 * The program exits when done. Targets are created. etc. etc. etc. 794 */ 795 int 796 main(int argc, char **argv) 797 { 798 Lst targs; /* target nodes to create -- passed to Make_Init */ 799 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 800 struct stat sb, sa; 801 char *p1, *path, *pwd; 802 char mdpath[MAXPATHLEN]; 803 #ifdef FORCE_MACHINE 804 const char *machine = FORCE_MACHINE; 805 #else 806 const char *machine = getenv("MACHINE"); 807 #endif 808 const char *machine_arch = getenv("MACHINE_ARCH"); 809 char *syspath = getenv("MAKESYSPATH"); 810 Lst sysMkPath; /* Path of sys.mk */ 811 char *cp = NULL, *start; 812 /* avoid faults on read-only strings */ 813 static char defsyspath[] = _PATH_DEFSYSPATH; 814 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 815 struct timeval rightnow; /* to initialize random seed */ 816 #ifdef MAKE_NATIVE 817 struct utsname utsname; 818 #endif 819 820 /* default to writing debug to stderr */ 821 debug_file = stderr; 822 823 #ifdef SIGINFO 824 (void)bmake_signal(SIGINFO, siginfo); 825 #endif 826 /* 827 * Set the seed to produce a different random sequence 828 * on each program execution. 829 */ 830 gettimeofday(&rightnow, NULL); 831 srandom(rightnow.tv_sec + rightnow.tv_usec); 832 833 if ((progname = strrchr(argv[0], '/')) != NULL) 834 progname++; 835 else 836 progname = argv[0]; 837 #ifdef RLIMIT_NOFILE 838 /* 839 * get rid of resource limit on file descriptors 840 */ 841 { 842 struct rlimit rl; 843 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 844 rl.rlim_cur != rl.rlim_max) { 845 rl.rlim_cur = rl.rlim_max; 846 (void)setrlimit(RLIMIT_NOFILE, &rl); 847 } 848 } 849 #endif 850 851 /* 852 * Get the name of this type of MACHINE from utsname 853 * so we can share an executable for similar machines. 854 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 855 * 856 * Note that both MACHINE and MACHINE_ARCH are decided at 857 * run-time. 858 */ 859 if (!machine) { 860 #ifdef MAKE_NATIVE 861 if (uname(&utsname) == -1) { 862 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 863 strerror(errno)); 864 exit(2); 865 } 866 machine = utsname.machine; 867 #else 868 #ifdef MAKE_MACHINE 869 machine = MAKE_MACHINE; 870 #else 871 machine = "unknown"; 872 #endif 873 #endif 874 } 875 876 if (!machine_arch) { 877 #ifndef MACHINE_ARCH 878 #ifdef MAKE_MACHINE_ARCH 879 machine_arch = MAKE_MACHINE_ARCH; 880 #else 881 machine_arch = "unknown"; 882 #endif 883 #else 884 machine_arch = MACHINE_ARCH; 885 #endif 886 } 887 888 myPid = getpid(); /* remember this for vFork() */ 889 890 /* 891 * Just in case MAKEOBJDIR wants us to do something tricky. 892 */ 893 Var_Init(); /* Initialize the lists of variables for 894 * parsing arguments */ 895 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 896 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 897 #ifdef MAKE_VERSION 898 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 899 #endif 900 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 901 /* 902 * This is the traditional preference for makefiles. 903 */ 904 #ifndef MAKEFILE_PREFERENCE_LIST 905 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 906 #endif 907 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 908 VAR_GLOBAL, 0); 909 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 910 911 create = Lst_Init(FALSE); 912 makefiles = Lst_Init(FALSE); 913 printVars = FALSE; 914 debugVflag = FALSE; 915 variables = Lst_Init(FALSE); 916 beSilent = FALSE; /* Print commands as executed */ 917 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 918 noExecute = FALSE; /* Execute all commands */ 919 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 920 keepgoing = FALSE; /* Stop on error */ 921 allPrecious = FALSE; /* Remove targets when interrupted */ 922 queryFlag = FALSE; /* This is not just a check-run */ 923 noBuiltins = FALSE; /* Read the built-in rules */ 924 touchFlag = FALSE; /* Actually update targets */ 925 debug = 0; /* No debug verbosity, please. */ 926 jobsRunning = FALSE; 927 928 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 929 maxJobTokens = maxJobs; 930 compatMake = FALSE; /* No compat mode */ 931 ignorePWD = FALSE; 932 933 /* 934 * Initialize the parsing, directory and variable modules to prepare 935 * for the reading of inclusion paths and variable settings on the 936 * command line 937 */ 938 939 /* 940 * Initialize various variables. 941 * MAKE also gets this name, for compatibility 942 * .MAKEFLAGS gets set to the empty string just in case. 943 * MFLAGS also gets initialized empty, for compatibility. 944 */ 945 Parse_Init(); 946 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 947 /* 948 * Leave alone if it is an absolute path, or if it does 949 * not contain a '/' in which case we need to find it in 950 * the path, like execvp(3) and the shells do. 951 */ 952 p1 = argv[0]; 953 } else { 954 /* 955 * A relative path, canonicalize it. 956 */ 957 p1 = realpath(argv[0], mdpath); 958 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 959 p1 = argv[0]; /* realpath failed */ 960 } 961 } 962 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 963 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 964 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 965 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 966 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 967 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 968 969 /* 970 * Set some other useful macros 971 */ 972 { 973 char tmp[64]; 974 const char *ep; 975 976 if (!(ep = getenv(MAKE_LEVEL))) { 977 #ifdef MAKE_LEVEL_SAFE 978 if (!(ep = getenv(MAKE_LEVEL_SAFE))) 979 #endif 980 ep = "0"; 981 } 982 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0); 983 snprintf(tmp, sizeof(tmp), "%u", myPid); 984 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 985 snprintf(tmp, sizeof(tmp), "%u", getppid()); 986 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 987 } 988 Job_SetPrefix(); 989 990 /* 991 * First snag any flags out of the MAKE environment variable. 992 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 993 * in a different format). 994 */ 995 #ifdef POSIX 996 Main_ParseArgLine(getenv("MAKEFLAGS")); 997 #else 998 Main_ParseArgLine(getenv("MAKE")); 999 #endif 1000 1001 /* 1002 * Find where we are (now). 1003 * We take care of PWD for the automounter below... 1004 */ 1005 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1006 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1007 progname, strerror(errno)); 1008 exit(2); 1009 } 1010 1011 MainParseArgs(argc, argv); 1012 1013 /* 1014 * Verify that cwd is sane. 1015 */ 1016 if (stat(curdir, &sa) == -1) { 1017 (void)fprintf(stderr, "%s: %s: %s.\n", 1018 progname, curdir, strerror(errno)); 1019 exit(2); 1020 } 1021 1022 /* 1023 * All this code is so that we know where we are when we start up 1024 * on a different machine with pmake. 1025 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1026 * since the value of curdir can vary depending on how we got 1027 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1028 * or via subdir.mk in which case its likely a shell which does 1029 * not provide it. 1030 * So, to stop it breaking this case only, we ignore PWD if 1031 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1032 */ 1033 #ifndef NO_PWD_OVERRIDE 1034 if (!ignorePWD && 1035 (pwd = getenv("PWD")) != NULL && 1036 getenv("MAKEOBJDIRPREFIX") == NULL) { 1037 const char *makeobjdir = getenv("MAKEOBJDIR"); 1038 1039 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1040 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 1041 sa.st_dev == sb.st_dev) 1042 (void)strncpy(curdir, pwd, MAXPATHLEN); 1043 } 1044 } 1045 #endif 1046 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1047 1048 /* 1049 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1050 * MAKEOBJDIR is set in the environment, try only that value 1051 * and fall back to .CURDIR if it does not exist. 1052 * 1053 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1054 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1055 * of these paths exist, just use .CURDIR. 1056 */ 1057 Dir_Init(curdir); 1058 (void)Main_SetObjdir(curdir); 1059 1060 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1061 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1062 (void)Main_SetObjdir(mdpath); 1063 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1064 (void)Main_SetObjdir(path); 1065 } else { 1066 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1067 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1068 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1069 _PATH_OBJDIRPREFIX, curdir); 1070 (void)Main_SetObjdir(mdpath); 1071 } 1072 } 1073 1074 /* 1075 * Be compatible if user did not specify -j and did not explicitly 1076 * turned compatibility on 1077 */ 1078 if (!compatMake && !forceJobs) { 1079 compatMake = TRUE; 1080 } 1081 1082 /* 1083 * Initialize archive, target and suffix modules in preparation for 1084 * parsing the makefile(s) 1085 */ 1086 Arch_Init(); 1087 Targ_Init(); 1088 Suff_Init(); 1089 Trace_Init(tracefile); 1090 1091 DEFAULT = NULL; 1092 (void)time(&now); 1093 1094 Trace_Log(MAKESTART, NULL); 1095 1096 /* 1097 * Set up the .TARGETS variable to contain the list of targets to be 1098 * created. If none specified, make the variable empty -- the parser 1099 * will fill the thing in with the default or .MAIN target. 1100 */ 1101 if (!Lst_IsEmpty(create)) { 1102 LstNode ln; 1103 1104 for (ln = Lst_First(create); ln != NULL; 1105 ln = Lst_Succ(ln)) { 1106 char *name = (char *)Lst_Datum(ln); 1107 1108 Var_Append(".TARGETS", name, VAR_GLOBAL); 1109 } 1110 } else 1111 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1112 1113 1114 /* 1115 * If no user-supplied system path was given (through the -m option) 1116 * add the directories from the DEFSYSPATH (more than one may be given 1117 * as dir1:...:dirn) to the system include path. 1118 */ 1119 if (syspath == NULL || *syspath == '\0') 1120 syspath = defsyspath; 1121 else 1122 syspath = bmake_strdup(syspath); 1123 1124 for (start = syspath; *start != '\0'; start = cp) { 1125 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1126 continue; 1127 if (*cp == ':') { 1128 *cp++ = '\0'; 1129 } 1130 /* look for magic parent directory search string */ 1131 if (strncmp(".../", start, 4) != 0) { 1132 (void)Dir_AddDir(defIncPath, start); 1133 } else { 1134 if (Dir_FindHereOrAbove(curdir, start+4, 1135 found_path, sizeof(found_path))) { 1136 (void)Dir_AddDir(defIncPath, found_path); 1137 } 1138 } 1139 } 1140 if (syspath != defsyspath) 1141 free(syspath); 1142 1143 /* 1144 * Read in the built-in rules first, followed by the specified 1145 * makefile, if it was (makefile != NULL), or the default 1146 * makefile and Makefile, in that order, if it wasn't. 1147 */ 1148 if (!noBuiltins) { 1149 LstNode ln; 1150 1151 sysMkPath = Lst_Init(FALSE); 1152 Dir_Expand(_PATH_DEFSYSMK, 1153 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1154 sysMkPath); 1155 if (Lst_IsEmpty(sysMkPath)) 1156 Fatal("%s: no system rules (%s).", progname, 1157 _PATH_DEFSYSMK); 1158 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1159 if (ln == NULL) 1160 Fatal("%s: cannot open %s.", progname, 1161 (char *)Lst_Datum(ln)); 1162 } 1163 1164 if (!Lst_IsEmpty(makefiles)) { 1165 LstNode ln; 1166 1167 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1168 if (ln != NULL) 1169 Fatal("%s: cannot open %s.", progname, 1170 (char *)Lst_Datum(ln)); 1171 } else { 1172 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1173 VAR_CMD, 0); 1174 if (p1) { 1175 (void)str2Lst_Append(makefiles, p1, NULL); 1176 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1177 free(p1); 1178 } 1179 } 1180 1181 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1182 if (!noBuiltins || !printVars) { 1183 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1184 VAR_CMD, 0); 1185 doing_depend = TRUE; 1186 (void)ReadMakefile(makeDependfile, NULL); 1187 doing_depend = FALSE; 1188 } 1189 1190 MakeMode(NULL); 1191 1192 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1193 if (p1) 1194 free(p1); 1195 1196 if (!compatMake) 1197 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1198 if (DEBUG(JOB)) 1199 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1200 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1201 1202 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1203 1204 /* 1205 * For compatibility, look at the directories in the VPATH variable 1206 * and add them to the search path, if the variable is defined. The 1207 * variable's value is in the same format as the PATH envariable, i.e. 1208 * <directory>:<directory>:<directory>... 1209 */ 1210 if (Var_Exists("VPATH", VAR_CMD)) { 1211 char *vpath, savec; 1212 /* 1213 * GCC stores string constants in read-only memory, but 1214 * Var_Subst will want to write this thing, so store it 1215 * in an array 1216 */ 1217 static char VPATH[] = "${VPATH}"; 1218 1219 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1220 path = vpath; 1221 do { 1222 /* skip to end of directory */ 1223 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1224 continue; 1225 /* Save terminator character so know when to stop */ 1226 savec = *cp; 1227 *cp = '\0'; 1228 /* Add directory to search path */ 1229 (void)Dir_AddDir(dirSearchPath, path); 1230 *cp = savec; 1231 path = cp + 1; 1232 } while (savec == ':'); 1233 free(vpath); 1234 } 1235 1236 /* 1237 * Now that all search paths have been read for suffixes et al, it's 1238 * time to add the default search path to their lists... 1239 */ 1240 Suff_DoPaths(); 1241 1242 /* 1243 * Propagate attributes through :: dependency lists. 1244 */ 1245 Targ_Propagate(); 1246 1247 /* print the initial graph, if the user requested it */ 1248 if (DEBUG(GRAPH1)) 1249 Targ_PrintGraph(1); 1250 1251 /* print the values of any variables requested by the user */ 1252 if (printVars) { 1253 LstNode ln; 1254 Boolean expandVars; 1255 1256 if (debugVflag) 1257 expandVars = FALSE; 1258 else 1259 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1260 for (ln = Lst_First(variables); ln != NULL; 1261 ln = Lst_Succ(ln)) { 1262 char *var = (char *)Lst_Datum(ln); 1263 char *value; 1264 1265 if (strchr(var, '$')) { 1266 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1267 } else if (expandVars) { 1268 char tmp[128]; 1269 1270 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1271 Fatal("%s: variable name too big: %s", 1272 progname, var); 1273 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1274 } else { 1275 value = Var_Value(var, VAR_GLOBAL, &p1); 1276 } 1277 printf("%s\n", value ? value : ""); 1278 if (p1) 1279 free(p1); 1280 } 1281 } else { 1282 /* 1283 * Have now read the entire graph and need to make a list of 1284 * targets to create. If none was given on the command line, 1285 * we consult the parsing module to find the main target(s) 1286 * to create. 1287 */ 1288 if (Lst_IsEmpty(create)) 1289 targs = Parse_MainName(); 1290 else 1291 targs = Targ_FindList(create, TARG_CREATE); 1292 1293 if (!compatMake) { 1294 /* 1295 * Initialize job module before traversing the graph 1296 * now that any .BEGIN and .END targets have been read. 1297 * This is done only if the -q flag wasn't given 1298 * (to prevent the .BEGIN from being executed should 1299 * it exist). 1300 */ 1301 if (!queryFlag) { 1302 Job_Init(); 1303 jobsRunning = TRUE; 1304 } 1305 1306 /* Traverse the graph, checking on all the targets */ 1307 outOfDate = Make_Run(targs); 1308 } else { 1309 /* 1310 * Compat_Init will take care of creating all the 1311 * targets as well as initializing the module. 1312 */ 1313 Compat_Run(targs); 1314 } 1315 } 1316 1317 #ifdef CLEANUP 1318 Lst_Destroy(targs, NULL); 1319 Lst_Destroy(variables, NULL); 1320 Lst_Destroy(makefiles, NULL); 1321 Lst_Destroy(create, (FreeProc *)free); 1322 #endif 1323 1324 /* print the graph now it's been processed if the user requested it */ 1325 if (DEBUG(GRAPH2)) 1326 Targ_PrintGraph(2); 1327 1328 Trace_Log(MAKEEND, 0); 1329 1330 Suff_End(); 1331 Targ_End(); 1332 Arch_End(); 1333 Var_End(); 1334 Parse_End(); 1335 Dir_End(); 1336 Job_End(); 1337 Trace_End(); 1338 1339 return outOfDate ? 1 : 0; 1340 } 1341 1342 /*- 1343 * ReadMakefile -- 1344 * Open and parse the given makefile. 1345 * 1346 * Results: 1347 * 0 if ok. -1 if couldn't open file. 1348 * 1349 * Side Effects: 1350 * lots 1351 */ 1352 static int 1353 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1354 { 1355 const char *fname = p; /* makefile to read */ 1356 int fd; 1357 size_t len = MAXPATHLEN; 1358 char *name, *path = bmake_malloc(len); 1359 1360 if (!strcmp(fname, "-")) { 1361 Parse_File(NULL /*stdin*/, -1); 1362 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1363 } else { 1364 /* if we've chdir'd, rebuild the path name */ 1365 if (strcmp(curdir, objdir) && *fname != '/') { 1366 size_t plen = strlen(curdir) + strlen(fname) + 2; 1367 if (len < plen) 1368 path = bmake_realloc(path, len = 2 * plen); 1369 1370 (void)snprintf(path, len, "%s/%s", curdir, fname); 1371 fd = open(path, O_RDONLY); 1372 if (fd != -1) { 1373 fname = path; 1374 goto found; 1375 } 1376 1377 /* If curdir failed, try objdir (ala .depend) */ 1378 plen = strlen(objdir) + strlen(fname) + 2; 1379 if (len < plen) 1380 path = bmake_realloc(path, len = 2 * plen); 1381 (void)snprintf(path, len, "%s/%s", objdir, fname); 1382 fd = open(path, O_RDONLY); 1383 if (fd != -1) { 1384 fname = path; 1385 goto found; 1386 } 1387 } else { 1388 fd = open(fname, O_RDONLY); 1389 if (fd != -1) 1390 goto found; 1391 } 1392 /* look in -I and system include directories. */ 1393 name = Dir_FindFile(fname, parseIncPath); 1394 if (!name) 1395 name = Dir_FindFile(fname, 1396 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1397 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1398 if (name) 1399 free(name); 1400 free(path); 1401 return(-1); 1402 } 1403 fname = name; 1404 /* 1405 * set the MAKEFILE variable desired by System V fans -- the 1406 * placement of the setting here means it gets set to the last 1407 * makefile specified, as it is set by SysV make. 1408 */ 1409 found: 1410 if (!doing_depend) 1411 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1412 Parse_File(fname, fd); 1413 } 1414 free(path); 1415 return(0); 1416 } 1417 1418 1419 1420 /*- 1421 * Cmd_Exec -- 1422 * Execute the command in cmd, and return the output of that command 1423 * in a string. 1424 * 1425 * Results: 1426 * A string containing the output of the command, or the empty string 1427 * If errnum is not NULL, it contains the reason for the command failure 1428 * 1429 * Side Effects: 1430 * The string must be freed by the caller. 1431 */ 1432 char * 1433 Cmd_Exec(const char *cmd, const char **errnum) 1434 { 1435 const char *args[4]; /* Args for invoking the shell */ 1436 int fds[2]; /* Pipe streams */ 1437 int cpid; /* Child PID */ 1438 int pid; /* PID from wait() */ 1439 char *res; /* result */ 1440 WAIT_T status; /* command exit status */ 1441 Buffer buf; /* buffer to store the result */ 1442 char *cp; 1443 int cc; 1444 1445 1446 *errnum = NULL; 1447 1448 if (!shellName) 1449 Shell_Init(); 1450 /* 1451 * Set up arguments for shell 1452 */ 1453 args[0] = shellName; 1454 args[1] = "-c"; 1455 args[2] = cmd; 1456 args[3] = NULL; 1457 1458 /* 1459 * Open a pipe for fetching its output 1460 */ 1461 if (pipe(fds) == -1) { 1462 *errnum = "Couldn't create pipe for \"%s\""; 1463 goto bad; 1464 } 1465 1466 /* 1467 * Fork 1468 */ 1469 switch (cpid = vFork()) { 1470 case 0: 1471 /* 1472 * Close input side of pipe 1473 */ 1474 (void)close(fds[0]); 1475 1476 /* 1477 * Duplicate the output stream to the shell's output, then 1478 * shut the extra thing down. Note we don't fetch the error 1479 * stream...why not? Why? 1480 */ 1481 (void)dup2(fds[1], 1); 1482 (void)close(fds[1]); 1483 1484 Var_ExportVars(); 1485 1486 (void)execv(shellPath, UNCONST(args)); 1487 _exit(1); 1488 /*NOTREACHED*/ 1489 1490 case -1: 1491 *errnum = "Couldn't exec \"%s\""; 1492 goto bad; 1493 1494 default: 1495 /* 1496 * No need for the writing half 1497 */ 1498 (void)close(fds[1]); 1499 1500 Buf_Init(&buf, 0); 1501 1502 do { 1503 char result[BUFSIZ]; 1504 cc = read(fds[0], result, sizeof(result)); 1505 if (cc > 0) 1506 Buf_AddBytes(&buf, cc, result); 1507 } 1508 while (cc > 0 || (cc == -1 && errno == EINTR)); 1509 1510 /* 1511 * Close the input side of the pipe. 1512 */ 1513 (void)close(fds[0]); 1514 1515 /* 1516 * Wait for the process to exit. 1517 */ 1518 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1519 JobReapChild(pid, status, FALSE); 1520 continue; 1521 } 1522 cc = Buf_Size(&buf); 1523 res = Buf_Destroy(&buf, FALSE); 1524 1525 if (cc == 0) 1526 *errnum = "Couldn't read shell's output for \"%s\""; 1527 1528 if (WIFSIGNALED(status)) 1529 *errnum = "\"%s\" exited on a signal"; 1530 else if (WEXITSTATUS(status) != 0) 1531 *errnum = "\"%s\" returned non-zero status"; 1532 1533 /* 1534 * Null-terminate the result, convert newlines to spaces and 1535 * install it in the variable. 1536 */ 1537 res[cc] = '\0'; 1538 cp = &res[cc]; 1539 1540 if (cc > 0 && *--cp == '\n') { 1541 /* 1542 * A final newline is just stripped 1543 */ 1544 *cp-- = '\0'; 1545 } 1546 while (cp >= res) { 1547 if (*cp == '\n') { 1548 *cp = ' '; 1549 } 1550 cp--; 1551 } 1552 break; 1553 } 1554 return res; 1555 bad: 1556 res = bmake_malloc(1); 1557 *res = '\0'; 1558 return res; 1559 } 1560 1561 /*- 1562 * Error -- 1563 * Print an error message given its format. 1564 * 1565 * Results: 1566 * None. 1567 * 1568 * Side Effects: 1569 * The message is printed. 1570 */ 1571 /* VARARGS */ 1572 void 1573 Error(const char *fmt, ...) 1574 { 1575 va_list ap; 1576 FILE *err_file; 1577 1578 err_file = debug_file; 1579 if (err_file == stdout) 1580 err_file = stderr; 1581 (void)fflush(stdout); 1582 for (;;) { 1583 va_start(ap, fmt); 1584 fprintf(err_file, "%s: ", progname); 1585 (void)vfprintf(err_file, fmt, ap); 1586 va_end(ap); 1587 (void)fprintf(err_file, "\n"); 1588 (void)fflush(err_file); 1589 if (err_file == stderr) 1590 break; 1591 err_file = stderr; 1592 } 1593 } 1594 1595 /*- 1596 * Fatal -- 1597 * Produce a Fatal error message. If jobs are running, waits for them 1598 * to finish. 1599 * 1600 * Results: 1601 * None 1602 * 1603 * Side Effects: 1604 * The program exits 1605 */ 1606 /* VARARGS */ 1607 void 1608 Fatal(const char *fmt, ...) 1609 { 1610 va_list ap; 1611 1612 va_start(ap, fmt); 1613 if (jobsRunning) 1614 Job_Wait(); 1615 1616 (void)fflush(stdout); 1617 (void)vfprintf(stderr, fmt, ap); 1618 va_end(ap); 1619 (void)fprintf(stderr, "\n"); 1620 (void)fflush(stderr); 1621 1622 PrintOnError(NULL, NULL); 1623 1624 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1625 Targ_PrintGraph(2); 1626 Trace_Log(MAKEERROR, 0); 1627 exit(2); /* Not 1 so -q can distinguish error */ 1628 } 1629 1630 /* 1631 * Punt -- 1632 * Major exception once jobs are being created. Kills all jobs, prints 1633 * a message and exits. 1634 * 1635 * Results: 1636 * None 1637 * 1638 * Side Effects: 1639 * All children are killed indiscriminately and the program Lib_Exits 1640 */ 1641 /* VARARGS */ 1642 void 1643 Punt(const char *fmt, ...) 1644 { 1645 va_list ap; 1646 1647 va_start(ap, fmt); 1648 (void)fflush(stdout); 1649 (void)fprintf(stderr, "%s: ", progname); 1650 (void)vfprintf(stderr, fmt, ap); 1651 va_end(ap); 1652 (void)fprintf(stderr, "\n"); 1653 (void)fflush(stderr); 1654 1655 PrintOnError(NULL, NULL); 1656 1657 DieHorribly(); 1658 } 1659 1660 /*- 1661 * DieHorribly -- 1662 * Exit without giving a message. 1663 * 1664 * Results: 1665 * None 1666 * 1667 * Side Effects: 1668 * A big one... 1669 */ 1670 void 1671 DieHorribly(void) 1672 { 1673 if (jobsRunning) 1674 Job_AbortAll(); 1675 if (DEBUG(GRAPH2)) 1676 Targ_PrintGraph(2); 1677 Trace_Log(MAKEERROR, 0); 1678 exit(2); /* Not 1, so -q can distinguish error */ 1679 } 1680 1681 /* 1682 * Finish -- 1683 * Called when aborting due to errors in child shell to signal 1684 * abnormal exit. 1685 * 1686 * Results: 1687 * None 1688 * 1689 * Side Effects: 1690 * The program exits 1691 */ 1692 void 1693 Finish(int errors) 1694 /* number of errors encountered in Make_Make */ 1695 { 1696 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1697 } 1698 1699 /* 1700 * enunlink -- 1701 * Remove a file carefully, avoiding directories. 1702 */ 1703 int 1704 eunlink(const char *file) 1705 { 1706 struct stat st; 1707 1708 if (lstat(file, &st) == -1) 1709 return -1; 1710 1711 if (S_ISDIR(st.st_mode)) { 1712 errno = EISDIR; 1713 return -1; 1714 } 1715 return unlink(file); 1716 } 1717 1718 /* 1719 * execError -- 1720 * Print why exec failed, avoiding stdio. 1721 */ 1722 void 1723 execError(const char *af, const char *av) 1724 { 1725 #ifdef USE_IOVEC 1726 int i = 0; 1727 struct iovec iov[8]; 1728 #define IOADD(s) \ 1729 (void)(iov[i].iov_base = UNCONST(s), \ 1730 iov[i].iov_len = strlen(iov[i].iov_base), \ 1731 i++) 1732 #else 1733 #define IOADD(s) (void)write(2, s, strlen(s)) 1734 #endif 1735 1736 IOADD(progname); 1737 IOADD(": "); 1738 IOADD(af); 1739 IOADD("("); 1740 IOADD(av); 1741 IOADD(") failed ("); 1742 IOADD(strerror(errno)); 1743 IOADD(")\n"); 1744 1745 #ifdef USE_IOVEC 1746 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1747 continue; 1748 #endif 1749 } 1750 1751 /* 1752 * usage -- 1753 * exit with usage message 1754 */ 1755 static void 1756 usage(void) 1757 { 1758 (void)fprintf(stderr, 1759 "usage: %s [-BeikNnqrstWX] \n\ 1760 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1761 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1762 [-V variable] [variable=value] [target ...]\n", progname); 1763 exit(2); 1764 } 1765 1766 1767 int 1768 PrintAddr(void *a, void *b) 1769 { 1770 printf("%lx ", (unsigned long) a); 1771 return b ? 0 : 0; 1772 } 1773 1774 1775 1776 void 1777 PrintOnError(GNode *gn, const char *s) 1778 { 1779 static GNode *en = NULL; 1780 char tmp[64]; 1781 char *cp; 1782 1783 if (s) 1784 printf("%s", s); 1785 1786 printf("\n%s: stopped in %s\n", progname, curdir); 1787 1788 if (en) 1789 return; /* we've been here! */ 1790 if (gn) { 1791 /* 1792 * We can print this even if there is no .ERROR target. 1793 */ 1794 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1795 } 1796 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1797 sizeof(tmp) - 1); 1798 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1799 if (cp) { 1800 if (*cp) 1801 printf("%s", cp); 1802 free(cp); 1803 } 1804 /* 1805 * Finally, see if there is a .ERROR target, and run it if so. 1806 */ 1807 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1808 if (en) { 1809 en->type |= OP_SPECIAL; 1810 Compat_Make(en, en); 1811 } 1812 } 1813 1814 void 1815 Main_ExportMAKEFLAGS(Boolean first) 1816 { 1817 static int once = 1; 1818 char tmp[64]; 1819 char *s; 1820 1821 if (once != first) 1822 return; 1823 once = 0; 1824 1825 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1826 sizeof(tmp)); 1827 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1828 if (s && *s) { 1829 #ifdef POSIX 1830 setenv("MAKEFLAGS", s, 1); 1831 #else 1832 setenv("MAKE", s, 1); 1833 #endif 1834 } 1835 } 1836 1837 char * 1838 getTmpdir(void) 1839 { 1840 static char *tmpdir = NULL; 1841 1842 if (!tmpdir) { 1843 struct stat st; 1844 1845 /* 1846 * Honor $TMPDIR but only if it is valid. 1847 * Ensure it ends with /. 1848 */ 1849 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1850 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1851 free(tmpdir); 1852 tmpdir = bmake_strdup(_PATH_TMP); 1853 } 1854 } 1855 return tmpdir; 1856 } 1857 1858 /* 1859 * Create and open a temp file using "pattern". 1860 * If "fnamep" is provided set it to a copy of the filename created. 1861 * Otherwise unlink the file once open. 1862 */ 1863 int 1864 mkTempFile(const char *pattern, char **fnamep) 1865 { 1866 static char *tmpdir = NULL; 1867 char tfile[MAXPATHLEN]; 1868 int fd; 1869 1870 if (!pattern) 1871 pattern = TMPPAT; 1872 if (!tmpdir) 1873 tmpdir = getTmpdir(); 1874 if (pattern[0] == '/') { 1875 snprintf(tfile, sizeof(tfile), "%s", pattern); 1876 } else { 1877 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1878 } 1879 if ((fd = mkstemp(tfile)) < 0) 1880 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1881 if (fnamep) { 1882 *fnamep = bmake_strdup(tfile); 1883 } else { 1884 unlink(tfile); /* we just want the descriptor */ 1885 } 1886 return fd; 1887 } 1888 1889 1890 /* 1891 * Return a Boolean based on setting of a knob. 1892 * 1893 * If the knob is not set, the supplied default is the return value. 1894 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1895 * is FALSE, otherwise TRUE. 1896 */ 1897 Boolean 1898 getBoolean(const char *name, Boolean bf) 1899 { 1900 char tmp[64]; 1901 char *cp; 1902 1903 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1904 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1905 1906 if (cp) { 1907 switch(*cp) { 1908 case '\0': /* not set - the default wins */ 1909 break; 1910 case '0': 1911 case 'f': 1912 case 'n': 1913 bf = FALSE; 1914 break; 1915 case 'o': 1916 switch (cp[1]) { 1917 case 'f': 1918 bf = FALSE; 1919 break; 1920 default: 1921 bf = TRUE; 1922 break; 1923 } 1924 break; 1925 default: 1926 bf = TRUE; 1927 break; 1928 } 1929 free(cp); 1930 } 1931 } 1932 return (bf); 1933 } 1934