1 /* $NetBSD: main.c,v 1.229 2014/08/23 15:05:40 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 1.229 2014/08/23 15:05:40 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 1.229 2014/08/23 15:05:40 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 optional arguments 103 * for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and arguments for it. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and arguments for it. 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/stat.h> 121 #ifdef MAKE_NATIVE 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <fcntl.h> 129 #include <signal.h> 130 #include <stdarg.h> 131 #include <stdio.h> 132 #include <stdlib.h> 133 #include <time.h> 134 #include <ctype.h> 135 136 #include "make.h" 137 #include "hash.h" 138 #include "dir.h" 139 #include "job.h" 140 #include "pathnames.h" 141 #include "trace.h" 142 143 #ifdef USE_IOVEC 144 #include <sys/uio.h> 145 #endif 146 147 #ifndef DEFMAXLOCAL 148 #define DEFMAXLOCAL DEFMAXJOBS 149 #endif /* DEFMAXLOCAL */ 150 151 Lst create; /* Targets to be made */ 152 time_t now; /* Time at start of make */ 153 GNode *DEFAULT; /* .DEFAULT node */ 154 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 155 156 static Boolean noBuiltins; /* -r flag */ 157 static Lst makefiles; /* ordered list of makefiles to read */ 158 static Boolean printVars; /* print value of one or more vars */ 159 static Lst variables; /* list of variables to print */ 160 int maxJobs; /* -j argument */ 161 static int maxJobTokens; /* -j argument */ 162 Boolean compatMake; /* -B argument */ 163 int debug; /* -d argument */ 164 Boolean debugVflag; /* -dV */ 165 Boolean noExecute; /* -n flag */ 166 Boolean noRecursiveExecute; /* -N flag */ 167 Boolean keepgoing; /* -k flag */ 168 Boolean queryFlag; /* -q flag */ 169 Boolean touchFlag; /* -t flag */ 170 Boolean enterFlag; /* -w flag */ 171 Boolean ignoreErrors; /* -i flag */ 172 Boolean beSilent; /* -s flag */ 173 Boolean oldVars; /* variable substitution style */ 174 Boolean checkEnvFirst; /* -e flag */ 175 Boolean parseWarnFatal; /* -W flag */ 176 Boolean jobServer; /* -J flag */ 177 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 178 Boolean varNoExportEnv; /* -X flag */ 179 Boolean doing_depend; /* Set while reading .depend */ 180 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 181 static const char * tracefile; 182 static void MainParseArgs(int, char **); 183 static int ReadMakefile(const void *, const void *); 184 static void usage(void) MAKE_ATTR_DEAD; 185 static int MarkSysMkTargets(void *, void *); 186 187 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 188 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 189 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 190 char *progname; /* the program name */ 191 char *makeDependfile; 192 pid_t myPid; 193 int makelevel; 194 195 Boolean forceJobs = FALSE; 196 197 extern Lst parseIncPath; 198 199 /* 200 * For compatibility with the POSIX version of MAKEFLAGS that includes 201 * all the options with out -, convert flags to -f -l -a -g -s. 202 */ 203 static char * 204 explode(const char *flags) 205 { 206 size_t len; 207 char *nf, *st; 208 const char *f; 209 210 if (flags == NULL) 211 return NULL; 212 213 for (f = flags; *f; f++) 214 if (!isalpha((unsigned char)*f)) 215 break; 216 217 if (*f) 218 return bmake_strdup(flags); 219 220 len = strlen(flags); 221 st = nf = bmake_malloc(len * 3 + 1); 222 while (*flags) { 223 *nf++ = '-'; 224 *nf++ = *flags++; 225 *nf++ = ' '; 226 } 227 *nf = '\0'; 228 return st; 229 } 230 231 static void 232 parse_debug_options(const char *argvalue) 233 { 234 const char *modules; 235 const char *mode; 236 char *fname; 237 int len; 238 239 for (modules = argvalue; *modules; ++modules) { 240 switch (*modules) { 241 case 'A': 242 debug = ~0; 243 break; 244 case 'a': 245 debug |= DEBUG_ARCH; 246 break; 247 case 'C': 248 debug |= DEBUG_CWD; 249 break; 250 case 'c': 251 debug |= DEBUG_COND; 252 break; 253 case 'd': 254 debug |= DEBUG_DIR; 255 break; 256 case 'e': 257 debug |= DEBUG_ERROR; 258 break; 259 case 'f': 260 debug |= DEBUG_FOR; 261 break; 262 case 'g': 263 if (modules[1] == '1') { 264 debug |= DEBUG_GRAPH1; 265 ++modules; 266 } 267 else if (modules[1] == '2') { 268 debug |= DEBUG_GRAPH2; 269 ++modules; 270 } 271 else if (modules[1] == '3') { 272 debug |= DEBUG_GRAPH3; 273 ++modules; 274 } 275 break; 276 case 'j': 277 debug |= DEBUG_JOB; 278 break; 279 case 'l': 280 debug |= DEBUG_LOUD; 281 break; 282 case 'M': 283 debug |= DEBUG_META; 284 break; 285 case 'm': 286 debug |= DEBUG_MAKE; 287 break; 288 case 'n': 289 debug |= DEBUG_SCRIPT; 290 break; 291 case 'p': 292 debug |= DEBUG_PARSE; 293 break; 294 case 's': 295 debug |= DEBUG_SUFF; 296 break; 297 case 't': 298 debug |= DEBUG_TARG; 299 break; 300 case 'V': 301 debugVflag = TRUE; 302 break; 303 case 'v': 304 debug |= DEBUG_VAR; 305 break; 306 case 'x': 307 debug |= DEBUG_SHELL; 308 break; 309 case 'F': 310 if (debug_file != stdout && debug_file != stderr) 311 fclose(debug_file); 312 if (*++modules == '+') { 313 modules++; 314 mode = "a"; 315 } else 316 mode = "w"; 317 if (strcmp(modules, "stdout") == 0) { 318 debug_file = stdout; 319 goto debug_setbuf; 320 } 321 if (strcmp(modules, "stderr") == 0) { 322 debug_file = stderr; 323 goto debug_setbuf; 324 } 325 len = strlen(modules); 326 fname = malloc(len + 20); 327 memcpy(fname, modules, len + 1); 328 /* Let the filename be modified by the pid */ 329 if (strcmp(fname + len - 3, ".%d") == 0) 330 snprintf(fname + len - 2, 20, "%d", getpid()); 331 debug_file = fopen(fname, mode); 332 if (!debug_file) { 333 fprintf(stderr, "Cannot open debug file %s\n", 334 fname); 335 usage(); 336 } 337 free(fname); 338 goto debug_setbuf; 339 default: 340 (void)fprintf(stderr, 341 "%s: illegal argument to d option -- %c\n", 342 progname, *modules); 343 usage(); 344 } 345 } 346 debug_setbuf: 347 /* 348 * Make the debug_file unbuffered, and make 349 * stdout line buffered (unless debugfile == stdout). 350 */ 351 setvbuf(debug_file, NULL, _IONBF, 0); 352 if (debug_file != stdout) { 353 setvbuf(stdout, NULL, _IOLBF, 0); 354 } 355 } 356 357 /*- 358 * MainParseArgs -- 359 * Parse a given argument vector. Called from main() and from 360 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 361 * 362 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 363 * 364 * Results: 365 * None 366 * 367 * Side Effects: 368 * Various global and local flags will be set depending on the flags 369 * given 370 */ 371 static void 372 MainParseArgs(int argc, char **argv) 373 { 374 char *p; 375 int c = '?'; 376 int arginc; 377 char *argvalue; 378 const char *getopt_def; 379 char *optscan; 380 Boolean inOption, dashDash = FALSE; 381 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 382 383 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 384 /* Can't actually use getopt(3) because rescanning is not portable */ 385 386 getopt_def = OPTFLAGS; 387 rearg: 388 inOption = FALSE; 389 optscan = NULL; 390 while(argc > 1) { 391 char *getopt_spec; 392 if(!inOption) 393 optscan = argv[1]; 394 c = *optscan++; 395 arginc = 0; 396 if(inOption) { 397 if(c == '\0') { 398 ++argv; 399 --argc; 400 inOption = FALSE; 401 continue; 402 } 403 } else { 404 if (c != '-' || dashDash) 405 break; 406 inOption = TRUE; 407 c = *optscan++; 408 } 409 /* '-' found at some earlier point */ 410 getopt_spec = strchr(getopt_def, c); 411 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 412 /* -<something> found, and <something> should have an arg */ 413 inOption = FALSE; 414 arginc = 1; 415 argvalue = optscan; 416 if(*argvalue == '\0') { 417 if (argc < 3) 418 goto noarg; 419 argvalue = argv[2]; 420 arginc = 2; 421 } 422 } else { 423 argvalue = NULL; 424 } 425 switch(c) { 426 case '\0': 427 arginc = 1; 428 inOption = FALSE; 429 break; 430 case 'B': 431 compatMake = TRUE; 432 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 433 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 434 break; 435 case 'C': 436 if (chdir(argvalue) == -1) { 437 (void)fprintf(stderr, 438 "%s: chdir %s: %s\n", 439 progname, argvalue, 440 strerror(errno)); 441 exit(1); 442 } 443 if (getcwd(curdir, MAXPATHLEN) == NULL) { 444 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 445 exit(2); 446 } 447 ignorePWD = TRUE; 448 break; 449 case 'D': 450 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 451 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 452 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 453 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 454 break; 455 case 'I': 456 if (argvalue == NULL) goto noarg; 457 Parse_AddIncludeDir(argvalue); 458 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 459 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 460 break; 461 case 'J': 462 if (argvalue == NULL) goto noarg; 463 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 464 (void)fprintf(stderr, 465 "%s: internal error -- J option malformed (%s)\n", 466 progname, argvalue); 467 usage(); 468 } 469 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 470 (fcntl(jp_1, F_GETFD, 0) < 0)) { 471 #if 0 472 (void)fprintf(stderr, 473 "%s: ###### warning -- J descriptors were closed!\n", 474 progname); 475 exit(2); 476 #endif 477 jp_0 = -1; 478 jp_1 = -1; 479 compatMake = TRUE; 480 } else { 481 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 482 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 483 jobServer = TRUE; 484 } 485 break; 486 case 'N': 487 noExecute = TRUE; 488 noRecursiveExecute = TRUE; 489 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 490 break; 491 case 'S': 492 keepgoing = FALSE; 493 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 494 break; 495 case 'T': 496 if (argvalue == NULL) goto noarg; 497 tracefile = bmake_strdup(argvalue); 498 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 499 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 500 break; 501 case 'V': 502 if (argvalue == NULL) goto noarg; 503 printVars = TRUE; 504 (void)Lst_AtEnd(variables, argvalue); 505 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 506 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 507 break; 508 case 'W': 509 parseWarnFatal = TRUE; 510 break; 511 case 'X': 512 varNoExportEnv = TRUE; 513 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 514 break; 515 case 'd': 516 if (argvalue == NULL) goto noarg; 517 /* If '-d-opts' don't pass to children */ 518 if (argvalue[0] == '-') 519 argvalue++; 520 else { 521 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 522 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 523 } 524 parse_debug_options(argvalue); 525 break; 526 case 'e': 527 checkEnvFirst = TRUE; 528 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 529 break; 530 case 'f': 531 if (argvalue == NULL) goto noarg; 532 (void)Lst_AtEnd(makefiles, argvalue); 533 break; 534 case 'i': 535 ignoreErrors = TRUE; 536 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 537 break; 538 case 'j': 539 if (argvalue == NULL) goto noarg; 540 forceJobs = TRUE; 541 maxJobs = strtol(argvalue, &p, 0); 542 if (*p != '\0' || maxJobs < 1) { 543 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 544 progname); 545 exit(1); 546 } 547 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 548 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 549 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 550 maxJobTokens = maxJobs; 551 break; 552 case 'k': 553 keepgoing = TRUE; 554 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 555 break; 556 case 'm': 557 if (argvalue == NULL) goto noarg; 558 /* look for magic parent directory search string */ 559 if (strncmp(".../", argvalue, 4) == 0) { 560 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 561 found_path, sizeof(found_path))) 562 break; /* nothing doing */ 563 (void)Dir_AddDir(sysIncPath, found_path); 564 } else { 565 (void)Dir_AddDir(sysIncPath, argvalue); 566 } 567 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 568 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 569 break; 570 case 'n': 571 noExecute = TRUE; 572 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 573 break; 574 case 'q': 575 queryFlag = TRUE; 576 /* Kind of nonsensical, wot? */ 577 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 578 break; 579 case 'r': 580 noBuiltins = TRUE; 581 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 582 break; 583 case 's': 584 beSilent = TRUE; 585 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 586 break; 587 case 't': 588 touchFlag = TRUE; 589 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 590 break; 591 case 'w': 592 enterFlag = TRUE; 593 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 594 break; 595 case '-': 596 dashDash = TRUE; 597 break; 598 default: 599 case '?': 600 usage(); 601 } 602 argv += arginc; 603 argc -= arginc; 604 } 605 606 oldVars = TRUE; 607 608 /* 609 * See if the rest of the arguments are variable assignments and 610 * perform them if so. Else take them to be targets and stuff them 611 * on the end of the "create" list. 612 */ 613 for (; argc > 1; ++argv, --argc) 614 if (Parse_IsVar(argv[1])) { 615 Parse_DoVar(argv[1], VAR_CMD); 616 } else { 617 if (!*argv[1]) 618 Punt("illegal (null) argument."); 619 if (*argv[1] == '-' && !dashDash) 620 goto rearg; 621 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 622 } 623 624 return; 625 noarg: 626 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 627 progname, c); 628 usage(); 629 } 630 631 /*- 632 * Main_ParseArgLine -- 633 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 634 * is encountered and by main() when reading the .MAKEFLAGS envariable. 635 * Takes a line of arguments and breaks it into its 636 * component words and passes those words and the number of them to the 637 * MainParseArgs function. 638 * The line should have all its leading whitespace removed. 639 * 640 * Input: 641 * line Line to fracture 642 * 643 * Results: 644 * None 645 * 646 * Side Effects: 647 * Only those that come from the various arguments. 648 */ 649 void 650 Main_ParseArgLine(const char *line) 651 { 652 char **argv; /* Manufactured argument vector */ 653 int argc; /* Number of arguments in argv */ 654 char *args; /* Space used by the args */ 655 char *buf, *p1; 656 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 657 size_t len; 658 659 if (line == NULL) 660 return; 661 for (; *line == ' '; ++line) 662 continue; 663 if (!*line) 664 return; 665 666 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 667 (void)snprintf(buf, len, "%s %s", argv0, line); 668 if (p1) 669 free(p1); 670 671 argv = brk_string(buf, &argc, TRUE, &args); 672 if (argv == NULL) { 673 Error("Unterminated quoted string [%s]", buf); 674 free(buf); 675 return; 676 } 677 free(buf); 678 MainParseArgs(argc, argv); 679 680 free(args); 681 free(argv); 682 } 683 684 Boolean 685 Main_SetObjdir(const char *path) 686 { 687 struct stat sb; 688 char *p = NULL; 689 char buf[MAXPATHLEN + 1]; 690 Boolean rc = FALSE; 691 692 /* expand variable substitutions */ 693 if (strchr(path, '$') != 0) { 694 snprintf(buf, MAXPATHLEN, "%s", path); 695 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 696 } 697 698 if (path[0] != '/') { 699 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 700 path = buf; 701 } 702 703 /* look for the directory and try to chdir there */ 704 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 705 if (chdir(path)) { 706 (void)fprintf(stderr, "make warning: %s: %s.\n", 707 path, strerror(errno)); 708 } else { 709 strncpy(objdir, path, MAXPATHLEN); 710 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 711 setenv("PWD", objdir, 1); 712 Dir_InitDot(); 713 rc = TRUE; 714 } 715 } 716 717 if (p) 718 free(p); 719 return rc; 720 } 721 722 /*- 723 * ReadAllMakefiles -- 724 * wrapper around ReadMakefile() to read all. 725 * 726 * Results: 727 * TRUE if ok, FALSE on error 728 */ 729 static int 730 ReadAllMakefiles(const void *p, const void *q) 731 { 732 return (ReadMakefile(p, q) == 0); 733 } 734 735 int 736 str2Lst_Append(Lst lp, char *str, const char *sep) 737 { 738 char *cp; 739 int n; 740 741 if (!sep) 742 sep = " \t"; 743 744 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 745 (void)Lst_AtEnd(lp, cp); 746 n++; 747 } 748 return (n); 749 } 750 751 #ifdef SIGINFO 752 /*ARGSUSED*/ 753 static void 754 siginfo(int signo MAKE_ATTR_UNUSED) 755 { 756 char dir[MAXPATHLEN]; 757 char str[2 * MAXPATHLEN]; 758 int len; 759 if (getcwd(dir, sizeof(dir)) == NULL) 760 return; 761 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 762 if (len > 0) 763 (void)write(STDERR_FILENO, str, (size_t)len); 764 } 765 #endif 766 767 /* 768 * Allow makefiles some control over the mode we run in. 769 */ 770 void 771 MakeMode(const char *mode) 772 { 773 char *mp = NULL; 774 775 if (!mode) 776 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 777 778 if (mode && *mode) { 779 if (strstr(mode, "compat")) { 780 compatMake = TRUE; 781 forceJobs = FALSE; 782 } 783 #if USE_META 784 if (strstr(mode, "meta")) 785 meta_mode_init(mode); 786 #endif 787 } 788 if (mp) 789 free(mp); 790 } 791 792 /*- 793 * main -- 794 * The main function, for obvious reasons. Initializes variables 795 * and a few modules, then parses the arguments give it in the 796 * environment and on the command line. Reads the system makefile 797 * followed by either Makefile, makefile or the file given by the 798 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 799 * flags it has received by then uses either the Make or the Compat 800 * module to create the initial list of targets. 801 * 802 * Results: 803 * If -q was given, exits -1 if anything was out-of-date. Else it exits 804 * 0. 805 * 806 * Side Effects: 807 * The program exits when done. Targets are created. etc. etc. etc. 808 */ 809 int 810 main(int argc, char **argv) 811 { 812 Lst targs; /* target nodes to create -- passed to Make_Init */ 813 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 814 struct stat sb, sa; 815 char *p1, *path; 816 char mdpath[MAXPATHLEN]; 817 const char *machine = getenv("MACHINE"); 818 const char *machine_arch = getenv("MACHINE_ARCH"); 819 char *syspath = getenv("MAKESYSPATH"); 820 Lst sysMkPath; /* Path of sys.mk */ 821 char *cp = NULL, *start; 822 /* avoid faults on read-only strings */ 823 static char defsyspath[] = _PATH_DEFSYSPATH; 824 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 825 struct timeval rightnow; /* to initialize random seed */ 826 struct utsname utsname; 827 828 /* default to writing debug to stderr */ 829 debug_file = stderr; 830 831 #ifdef SIGINFO 832 (void)bmake_signal(SIGINFO, siginfo); 833 #endif 834 /* 835 * Set the seed to produce a different random sequence 836 * on each program execution. 837 */ 838 gettimeofday(&rightnow, NULL); 839 srandom(rightnow.tv_sec + rightnow.tv_usec); 840 841 if ((progname = strrchr(argv[0], '/')) != NULL) 842 progname++; 843 else 844 progname = argv[0]; 845 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 846 /* 847 * get rid of resource limit on file descriptors 848 */ 849 { 850 struct rlimit rl; 851 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 852 rl.rlim_cur != rl.rlim_max) { 853 rl.rlim_cur = rl.rlim_max; 854 (void)setrlimit(RLIMIT_NOFILE, &rl); 855 } 856 } 857 #endif 858 859 if (uname(&utsname) == -1) { 860 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 861 strerror(errno)); 862 exit(2); 863 } 864 865 /* 866 * Get the name of this type of MACHINE from utsname 867 * so we can share an executable for similar machines. 868 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 869 * 870 * Note that both MACHINE and MACHINE_ARCH are decided at 871 * run-time. 872 */ 873 if (!machine) { 874 #ifdef MAKE_NATIVE 875 machine = utsname.machine; 876 #else 877 #ifdef MAKE_MACHINE 878 machine = MAKE_MACHINE; 879 #else 880 machine = "unknown"; 881 #endif 882 #endif 883 } 884 885 if (!machine_arch) { 886 #ifdef MAKE_NATIVE 887 static char machine_arch_buf[sizeof(utsname.machine)]; 888 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 889 size_t len = sizeof(machine_arch_buf); 890 891 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 892 &len, NULL, 0) < 0) { 893 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 894 strerror(errno)); 895 exit(2); 896 } 897 898 machine_arch = machine_arch_buf; 899 #else 900 #ifndef MACHINE_ARCH 901 #ifdef MAKE_MACHINE_ARCH 902 machine_arch = MAKE_MACHINE_ARCH; 903 #else 904 machine_arch = "unknown"; 905 #endif 906 #else 907 machine_arch = MACHINE_ARCH; 908 #endif 909 #endif 910 } 911 912 myPid = getpid(); /* remember this for vFork() */ 913 914 /* 915 * Just in case MAKEOBJDIR wants us to do something tricky. 916 */ 917 Var_Init(); /* Initialize the lists of variables for 918 * parsing arguments */ 919 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 920 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 921 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 922 #ifdef MAKE_VERSION 923 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 924 #endif 925 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 926 /* 927 * This is the traditional preference for makefiles. 928 */ 929 #ifndef MAKEFILE_PREFERENCE_LIST 930 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 931 #endif 932 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 933 VAR_GLOBAL, 0); 934 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 935 936 create = Lst_Init(FALSE); 937 makefiles = Lst_Init(FALSE); 938 printVars = FALSE; 939 debugVflag = FALSE; 940 variables = Lst_Init(FALSE); 941 beSilent = FALSE; /* Print commands as executed */ 942 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 943 noExecute = FALSE; /* Execute all commands */ 944 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 945 keepgoing = FALSE; /* Stop on error */ 946 allPrecious = FALSE; /* Remove targets when interrupted */ 947 queryFlag = FALSE; /* This is not just a check-run */ 948 noBuiltins = FALSE; /* Read the built-in rules */ 949 touchFlag = FALSE; /* Actually update targets */ 950 debug = 0; /* No debug verbosity, please. */ 951 jobsRunning = FALSE; 952 953 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 954 maxJobTokens = maxJobs; 955 compatMake = FALSE; /* No compat mode */ 956 ignorePWD = FALSE; 957 958 /* 959 * Initialize the parsing, directory and variable modules to prepare 960 * for the reading of inclusion paths and variable settings on the 961 * command line 962 */ 963 964 /* 965 * Initialize various variables. 966 * MAKE also gets this name, for compatibility 967 * .MAKEFLAGS gets set to the empty string just in case. 968 * MFLAGS also gets initialized empty, for compatibility. 969 */ 970 Parse_Init(); 971 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 972 /* 973 * Leave alone if it is an absolute path, or if it does 974 * not contain a '/' in which case we need to find it in 975 * the path, like execvp(3) and the shells do. 976 */ 977 p1 = argv[0]; 978 } else { 979 /* 980 * A relative path, canonicalize it. 981 */ 982 p1 = realpath(argv[0], mdpath); 983 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 984 p1 = argv[0]; /* realpath failed */ 985 } 986 } 987 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 988 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 989 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 990 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 991 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 992 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 993 /* some makefiles need to know this */ 994 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 995 996 /* 997 * Set some other useful macros 998 */ 999 { 1000 char tmp[64], *ep; 1001 1002 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1003 if (makelevel < 0) 1004 makelevel = 0; 1005 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1006 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1007 snprintf(tmp, sizeof(tmp), "%u", myPid); 1008 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1009 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1010 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1011 } 1012 if (makelevel > 0) { 1013 char pn[1024]; 1014 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1015 progname = bmake_strdup(pn); 1016 } 1017 1018 #ifdef USE_META 1019 meta_init(); 1020 #endif 1021 /* 1022 * First snag any flags out of the MAKE environment variable. 1023 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1024 * in a different format). 1025 */ 1026 #ifdef POSIX 1027 p1 = explode(getenv("MAKEFLAGS")); 1028 Main_ParseArgLine(p1); 1029 free(p1); 1030 #else 1031 Main_ParseArgLine(getenv("MAKE")); 1032 #endif 1033 1034 /* 1035 * Find where we are (now). 1036 * We take care of PWD for the automounter below... 1037 */ 1038 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1039 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1040 progname, strerror(errno)); 1041 exit(2); 1042 } 1043 1044 MainParseArgs(argc, argv); 1045 1046 if (enterFlag) 1047 printf("%s: Entering directory `%s'\n", progname, curdir); 1048 1049 /* 1050 * Verify that cwd is sane. 1051 */ 1052 if (stat(curdir, &sa) == -1) { 1053 (void)fprintf(stderr, "%s: %s: %s.\n", 1054 progname, curdir, strerror(errno)); 1055 exit(2); 1056 } 1057 1058 /* 1059 * All this code is so that we know where we are when we start up 1060 * on a different machine with pmake. 1061 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1062 * since the value of curdir can vary depending on how we got 1063 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1064 * or via subdir.mk in which case its likely a shell which does 1065 * not provide it. 1066 * So, to stop it breaking this case only, we ignore PWD if 1067 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1068 */ 1069 #ifndef NO_PWD_OVERRIDE 1070 if (!ignorePWD) { 1071 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1072 1073 if ((pwd = getenv("PWD")) != NULL && 1074 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1075 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1076 VAR_CMD, &ptmp2); 1077 1078 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1079 if (stat(pwd, &sb) == 0 && 1080 sa.st_ino == sb.st_ino && 1081 sa.st_dev == sb.st_dev) 1082 (void)strncpy(curdir, pwd, MAXPATHLEN); 1083 } 1084 } 1085 free(ptmp1); 1086 free(ptmp2); 1087 } 1088 #endif 1089 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1090 1091 /* 1092 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1093 * MAKEOBJDIR is set in the environment, try only that value 1094 * and fall back to .CURDIR if it does not exist. 1095 * 1096 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1097 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1098 * of these paths exist, just use .CURDIR. 1099 */ 1100 Dir_Init(curdir); 1101 (void)Main_SetObjdir(curdir); 1102 1103 if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) { 1104 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1105 (void)Main_SetObjdir(mdpath); 1106 free(p1); 1107 } else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) { 1108 (void)Main_SetObjdir(path); 1109 free(p1); 1110 } else { 1111 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1112 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1113 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1114 _PATH_OBJDIRPREFIX, curdir); 1115 (void)Main_SetObjdir(mdpath); 1116 } 1117 } 1118 1119 /* 1120 * Be compatible if user did not specify -j and did not explicitly 1121 * turned compatibility on 1122 */ 1123 if (!compatMake && !forceJobs) { 1124 compatMake = TRUE; 1125 } 1126 1127 /* 1128 * Initialize archive, target and suffix modules in preparation for 1129 * parsing the makefile(s) 1130 */ 1131 Arch_Init(); 1132 Targ_Init(); 1133 Suff_Init(); 1134 Trace_Init(tracefile); 1135 1136 DEFAULT = NULL; 1137 (void)time(&now); 1138 1139 Trace_Log(MAKESTART, NULL); 1140 1141 /* 1142 * Set up the .TARGETS variable to contain the list of targets to be 1143 * created. If none specified, make the variable empty -- the parser 1144 * will fill the thing in with the default or .MAIN target. 1145 */ 1146 if (!Lst_IsEmpty(create)) { 1147 LstNode ln; 1148 1149 for (ln = Lst_First(create); ln != NULL; 1150 ln = Lst_Succ(ln)) { 1151 char *name = (char *)Lst_Datum(ln); 1152 1153 Var_Append(".TARGETS", name, VAR_GLOBAL); 1154 } 1155 } else 1156 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1157 1158 1159 /* 1160 * If no user-supplied system path was given (through the -m option) 1161 * add the directories from the DEFSYSPATH (more than one may be given 1162 * as dir1:...:dirn) to the system include path. 1163 */ 1164 if (syspath == NULL || *syspath == '\0') 1165 syspath = defsyspath; 1166 else 1167 syspath = bmake_strdup(syspath); 1168 1169 for (start = syspath; *start != '\0'; start = cp) { 1170 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1171 continue; 1172 if (*cp == ':') { 1173 *cp++ = '\0'; 1174 } 1175 /* look for magic parent directory search string */ 1176 if (strncmp(".../", start, 4) != 0) { 1177 (void)Dir_AddDir(defIncPath, start); 1178 } else { 1179 if (Dir_FindHereOrAbove(curdir, start+4, 1180 found_path, sizeof(found_path))) { 1181 (void)Dir_AddDir(defIncPath, found_path); 1182 } 1183 } 1184 } 1185 if (syspath != defsyspath) 1186 free(syspath); 1187 1188 /* 1189 * Read in the built-in rules first, followed by the specified 1190 * makefile, if it was (makefile != NULL), or the default 1191 * makefile and Makefile, in that order, if it wasn't. 1192 */ 1193 if (!noBuiltins) { 1194 LstNode ln; 1195 1196 sysMkPath = Lst_Init(FALSE); 1197 Dir_Expand(_PATH_DEFSYSMK, 1198 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1199 sysMkPath); 1200 if (Lst_IsEmpty(sysMkPath)) 1201 Fatal("%s: no system rules (%s).", progname, 1202 _PATH_DEFSYSMK); 1203 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1204 if (ln == NULL) 1205 Fatal("%s: cannot open %s.", progname, 1206 (char *)Lst_Datum(ln)); 1207 } 1208 /* 1209 * Rules from system makefiles are somewhat special. For instance, 1210 * they're not eligible to become main targets. A sensible sys.mk 1211 * only contains suffix transformations and variables, but clearing 1212 * the suffix list makes suffix transformations into regular rules, 1213 * which could otherwise become main targets. 1214 */ 1215 Lst_ForEach(Targ_List(), MarkSysMkTargets, NULL); 1216 1217 if (!Lst_IsEmpty(makefiles)) { 1218 LstNode ln; 1219 1220 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1221 if (ln != NULL) 1222 Fatal("%s: cannot open %s.", progname, 1223 (char *)Lst_Datum(ln)); 1224 } else { 1225 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1226 VAR_CMD, 0); 1227 if (p1) { 1228 (void)str2Lst_Append(makefiles, p1, NULL); 1229 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1230 free(p1); 1231 } 1232 } 1233 1234 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1235 if (!noBuiltins || !printVars) { 1236 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1237 VAR_CMD, 0); 1238 doing_depend = TRUE; 1239 (void)ReadMakefile(makeDependfile, NULL); 1240 doing_depend = FALSE; 1241 } 1242 1243 MakeMode(NULL); 1244 1245 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1246 if (p1) 1247 free(p1); 1248 1249 if (!compatMake) 1250 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1251 if (DEBUG(JOB)) 1252 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1253 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1254 1255 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1256 1257 1258 /* 1259 * For compatibility, look at the directories in the VPATH variable 1260 * and add them to the search path, if the variable is defined. The 1261 * variable's value is in the same format as the PATH envariable, i.e. 1262 * <directory>:<directory>:<directory>... 1263 */ 1264 if (Var_Exists("VPATH", VAR_CMD)) { 1265 char *vpath, savec; 1266 /* 1267 * GCC stores string constants in read-only memory, but 1268 * Var_Subst will want to write this thing, so store it 1269 * in an array 1270 */ 1271 static char VPATH[] = "${VPATH}"; 1272 1273 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1274 path = vpath; 1275 do { 1276 /* skip to end of directory */ 1277 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1278 continue; 1279 /* Save terminator character so know when to stop */ 1280 savec = *cp; 1281 *cp = '\0'; 1282 /* Add directory to search path */ 1283 (void)Dir_AddDir(dirSearchPath, path); 1284 *cp = savec; 1285 path = cp + 1; 1286 } while (savec == ':'); 1287 free(vpath); 1288 } 1289 1290 /* 1291 * Now that all search paths have been read for suffixes et al, it's 1292 * time to add the default search path to their lists... 1293 */ 1294 Suff_DoPaths(); 1295 1296 /* 1297 * Propagate attributes through :: dependency lists. 1298 */ 1299 Targ_Propagate(); 1300 1301 /* print the initial graph, if the user requested it */ 1302 if (DEBUG(GRAPH1)) 1303 Targ_PrintGraph(1); 1304 1305 /* print the values of any variables requested by the user */ 1306 if (printVars) { 1307 LstNode ln; 1308 Boolean expandVars; 1309 1310 if (debugVflag) 1311 expandVars = FALSE; 1312 else 1313 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1314 for (ln = Lst_First(variables); ln != NULL; 1315 ln = Lst_Succ(ln)) { 1316 char *var = (char *)Lst_Datum(ln); 1317 char *value; 1318 1319 if (strchr(var, '$')) { 1320 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1321 } else if (expandVars) { 1322 char tmp[128]; 1323 1324 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1325 Fatal("%s: variable name too big: %s", 1326 progname, var); 1327 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1328 } else { 1329 value = Var_Value(var, VAR_GLOBAL, &p1); 1330 } 1331 printf("%s\n", value ? value : ""); 1332 if (p1) 1333 free(p1); 1334 } 1335 } else { 1336 /* 1337 * Have now read the entire graph and need to make a list of 1338 * targets to create. If none was given on the command line, 1339 * we consult the parsing module to find the main target(s) 1340 * to create. 1341 */ 1342 if (Lst_IsEmpty(create)) 1343 targs = Parse_MainName(); 1344 else 1345 targs = Targ_FindList(create, TARG_CREATE); 1346 1347 if (!compatMake) { 1348 /* 1349 * Initialize job module before traversing the graph 1350 * now that any .BEGIN and .END targets have been read. 1351 * This is done only if the -q flag wasn't given 1352 * (to prevent the .BEGIN from being executed should 1353 * it exist). 1354 */ 1355 if (!queryFlag) { 1356 Job_Init(); 1357 jobsRunning = TRUE; 1358 } 1359 1360 /* Traverse the graph, checking on all the targets */ 1361 outOfDate = Make_Run(targs); 1362 } else { 1363 /* 1364 * Compat_Init will take care of creating all the 1365 * targets as well as initializing the module. 1366 */ 1367 Compat_Run(targs); 1368 } 1369 } 1370 1371 #ifdef CLEANUP 1372 Lst_Destroy(targs, NULL); 1373 Lst_Destroy(variables, NULL); 1374 Lst_Destroy(makefiles, NULL); 1375 Lst_Destroy(create, (FreeProc *)free); 1376 #endif 1377 1378 /* print the graph now it's been processed if the user requested it */ 1379 if (DEBUG(GRAPH2)) 1380 Targ_PrintGraph(2); 1381 1382 Trace_Log(MAKEEND, 0); 1383 1384 if (enterFlag) 1385 printf("%s: Leaving directory `%s'\n", progname, curdir); 1386 1387 Targ_End(); 1388 Suff_End(); /* targets refer to suffixes, clean after Targ */ 1389 Arch_End(); 1390 Var_End(); 1391 Parse_End(); 1392 Dir_End(); 1393 Job_End(); 1394 Trace_End(); 1395 1396 return outOfDate ? 1 : 0; 1397 } 1398 1399 /*- 1400 * ReadMakefile -- 1401 * Open and parse the given makefile. 1402 * 1403 * Results: 1404 * 0 if ok. -1 if couldn't open file. 1405 * 1406 * Side Effects: 1407 * lots 1408 */ 1409 static int 1410 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1411 { 1412 const char *fname = p; /* makefile to read */ 1413 int fd; 1414 size_t len = MAXPATHLEN; 1415 char *name, *path = bmake_malloc(len); 1416 1417 if (!strcmp(fname, "-")) { 1418 Parse_File(NULL /*stdin*/, -1); 1419 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1420 } else { 1421 /* if we've chdir'd, rebuild the path name */ 1422 if (strcmp(curdir, objdir) && *fname != '/') { 1423 size_t plen = strlen(curdir) + strlen(fname) + 2; 1424 if (len < plen) 1425 path = bmake_realloc(path, len = 2 * plen); 1426 1427 (void)snprintf(path, len, "%s/%s", curdir, fname); 1428 fd = open(path, O_RDONLY); 1429 if (fd != -1) { 1430 fname = path; 1431 goto found; 1432 } 1433 1434 /* If curdir failed, try objdir (ala .depend) */ 1435 plen = strlen(objdir) + strlen(fname) + 2; 1436 if (len < plen) 1437 path = bmake_realloc(path, len = 2 * plen); 1438 (void)snprintf(path, len, "%s/%s", objdir, fname); 1439 fd = open(path, O_RDONLY); 1440 if (fd != -1) { 1441 fname = path; 1442 goto found; 1443 } 1444 } else { 1445 fd = open(fname, O_RDONLY); 1446 if (fd != -1) 1447 goto found; 1448 } 1449 /* look in -I and system include directories. */ 1450 name = Dir_FindFile(fname, parseIncPath); 1451 if (!name) 1452 name = Dir_FindFile(fname, 1453 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1454 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1455 if (name) 1456 free(name); 1457 free(path); 1458 return(-1); 1459 } 1460 fname = name; 1461 /* 1462 * set the MAKEFILE variable desired by System V fans -- the 1463 * placement of the setting here means it gets set to the last 1464 * makefile specified, as it is set by SysV make. 1465 */ 1466 found: 1467 if (!doing_depend) 1468 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1469 Parse_File(fname, fd); 1470 } 1471 free(path); 1472 return(0); 1473 } 1474 1475 1476 1477 /*- 1478 * Cmd_Exec -- 1479 * Execute the command in cmd, and return the output of that command 1480 * in a string. 1481 * 1482 * Results: 1483 * A string containing the output of the command, or the empty string 1484 * If errnum is not NULL, it contains the reason for the command failure 1485 * 1486 * Side Effects: 1487 * The string must be freed by the caller. 1488 */ 1489 char * 1490 Cmd_Exec(const char *cmd, const char **errnum) 1491 { 1492 const char *args[4]; /* Args for invoking the shell */ 1493 int fds[2]; /* Pipe streams */ 1494 int cpid; /* Child PID */ 1495 int pid; /* PID from wait() */ 1496 char *res; /* result */ 1497 int status; /* command exit status */ 1498 Buffer buf; /* buffer to store the result */ 1499 char *cp; 1500 int cc; /* bytes read, or -1 */ 1501 int savederr; /* saved errno */ 1502 1503 1504 *errnum = NULL; 1505 savederr = 0; 1506 1507 if (!shellName) 1508 Shell_Init(); 1509 /* 1510 * Set up arguments for shell 1511 */ 1512 args[0] = shellName; 1513 args[1] = "-c"; 1514 args[2] = cmd; 1515 args[3] = NULL; 1516 1517 /* 1518 * Open a pipe for fetching its output 1519 */ 1520 if (pipe(fds) == -1) { 1521 *errnum = "Couldn't create pipe for \"%s\""; 1522 goto bad; 1523 } 1524 1525 /* 1526 * Fork 1527 */ 1528 switch (cpid = vFork()) { 1529 case 0: 1530 /* 1531 * Close input side of pipe 1532 */ 1533 (void)close(fds[0]); 1534 1535 /* 1536 * Duplicate the output stream to the shell's output, then 1537 * shut the extra thing down. Note we don't fetch the error 1538 * stream...why not? Why? 1539 */ 1540 (void)dup2(fds[1], 1); 1541 (void)close(fds[1]); 1542 1543 Var_ExportVars(); 1544 1545 (void)execv(shellPath, UNCONST(args)); 1546 _exit(1); 1547 /*NOTREACHED*/ 1548 1549 case -1: 1550 *errnum = "Couldn't exec \"%s\""; 1551 goto bad; 1552 1553 default: 1554 /* 1555 * No need for the writing half 1556 */ 1557 (void)close(fds[1]); 1558 1559 Buf_Init(&buf, 0); 1560 1561 do { 1562 char result[BUFSIZ]; 1563 cc = read(fds[0], result, sizeof(result)); 1564 if (cc > 0) 1565 Buf_AddBytes(&buf, cc, result); 1566 } 1567 while (cc > 0 || (cc == -1 && errno == EINTR)); 1568 if (cc == -1) 1569 savederr = errno; 1570 1571 /* 1572 * Close the input side of the pipe. 1573 */ 1574 (void)close(fds[0]); 1575 1576 /* 1577 * Wait for the process to exit. 1578 */ 1579 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1580 JobReapChild(pid, status, FALSE); 1581 continue; 1582 } 1583 cc = Buf_Size(&buf); 1584 res = Buf_Destroy(&buf, FALSE); 1585 1586 if (savederr != 0) 1587 *errnum = "Couldn't read shell's output for \"%s\""; 1588 1589 if (WIFSIGNALED(status)) 1590 *errnum = "\"%s\" exited on a signal"; 1591 else if (WEXITSTATUS(status) != 0) 1592 *errnum = "\"%s\" returned non-zero status"; 1593 1594 /* 1595 * Null-terminate the result, convert newlines to spaces and 1596 * install it in the variable. 1597 */ 1598 res[cc] = '\0'; 1599 cp = &res[cc]; 1600 1601 if (cc > 0 && *--cp == '\n') { 1602 /* 1603 * A final newline is just stripped 1604 */ 1605 *cp-- = '\0'; 1606 } 1607 while (cp >= res) { 1608 if (*cp == '\n') { 1609 *cp = ' '; 1610 } 1611 cp--; 1612 } 1613 break; 1614 } 1615 return res; 1616 bad: 1617 res = bmake_malloc(1); 1618 *res = '\0'; 1619 return res; 1620 } 1621 1622 /*- 1623 * Error -- 1624 * Print an error message given its format. 1625 * 1626 * Results: 1627 * None. 1628 * 1629 * Side Effects: 1630 * The message is printed. 1631 */ 1632 /* VARARGS */ 1633 void 1634 Error(const char *fmt, ...) 1635 { 1636 va_list ap; 1637 FILE *err_file; 1638 1639 err_file = debug_file; 1640 if (err_file == stdout) 1641 err_file = stderr; 1642 (void)fflush(stdout); 1643 for (;;) { 1644 va_start(ap, fmt); 1645 fprintf(err_file, "%s: ", progname); 1646 (void)vfprintf(err_file, fmt, ap); 1647 va_end(ap); 1648 (void)fprintf(err_file, "\n"); 1649 (void)fflush(err_file); 1650 if (err_file == stderr) 1651 break; 1652 err_file = stderr; 1653 } 1654 } 1655 1656 /*- 1657 * Fatal -- 1658 * Produce a Fatal error message. If jobs are running, waits for them 1659 * to finish. 1660 * 1661 * Results: 1662 * None 1663 * 1664 * Side Effects: 1665 * The program exits 1666 */ 1667 /* VARARGS */ 1668 void 1669 Fatal(const char *fmt, ...) 1670 { 1671 va_list ap; 1672 1673 va_start(ap, fmt); 1674 if (jobsRunning) 1675 Job_Wait(); 1676 1677 (void)fflush(stdout); 1678 (void)vfprintf(stderr, fmt, ap); 1679 va_end(ap); 1680 (void)fprintf(stderr, "\n"); 1681 (void)fflush(stderr); 1682 1683 PrintOnError(NULL, NULL); 1684 1685 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1686 Targ_PrintGraph(2); 1687 Trace_Log(MAKEERROR, 0); 1688 exit(2); /* Not 1 so -q can distinguish error */ 1689 } 1690 1691 /* 1692 * Punt -- 1693 * Major exception once jobs are being created. Kills all jobs, prints 1694 * a message and exits. 1695 * 1696 * Results: 1697 * None 1698 * 1699 * Side Effects: 1700 * All children are killed indiscriminately and the program Lib_Exits 1701 */ 1702 /* VARARGS */ 1703 void 1704 Punt(const char *fmt, ...) 1705 { 1706 va_list ap; 1707 1708 va_start(ap, fmt); 1709 (void)fflush(stdout); 1710 (void)fprintf(stderr, "%s: ", progname); 1711 (void)vfprintf(stderr, fmt, ap); 1712 va_end(ap); 1713 (void)fprintf(stderr, "\n"); 1714 (void)fflush(stderr); 1715 1716 PrintOnError(NULL, NULL); 1717 1718 DieHorribly(); 1719 } 1720 1721 /*- 1722 * DieHorribly -- 1723 * Exit without giving a message. 1724 * 1725 * Results: 1726 * None 1727 * 1728 * Side Effects: 1729 * A big one... 1730 */ 1731 void 1732 DieHorribly(void) 1733 { 1734 if (jobsRunning) 1735 Job_AbortAll(); 1736 if (DEBUG(GRAPH2)) 1737 Targ_PrintGraph(2); 1738 Trace_Log(MAKEERROR, 0); 1739 exit(2); /* Not 1, so -q can distinguish error */ 1740 } 1741 1742 /* 1743 * Finish -- 1744 * Called when aborting due to errors in child shell to signal 1745 * abnormal exit. 1746 * 1747 * Results: 1748 * None 1749 * 1750 * Side Effects: 1751 * The program exits 1752 */ 1753 void 1754 Finish(int errors) 1755 /* number of errors encountered in Make_Make */ 1756 { 1757 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1758 } 1759 1760 /* 1761 * eunlink -- 1762 * Remove a file carefully, avoiding directories. 1763 */ 1764 int 1765 eunlink(const char *file) 1766 { 1767 struct stat st; 1768 1769 if (lstat(file, &st) == -1) 1770 return -1; 1771 1772 if (S_ISDIR(st.st_mode)) { 1773 errno = EISDIR; 1774 return -1; 1775 } 1776 return unlink(file); 1777 } 1778 1779 /* 1780 * execError -- 1781 * Print why exec failed, avoiding stdio. 1782 */ 1783 void 1784 execError(const char *af, const char *av) 1785 { 1786 #ifdef USE_IOVEC 1787 int i = 0; 1788 struct iovec iov[8]; 1789 #define IOADD(s) \ 1790 (void)(iov[i].iov_base = UNCONST(s), \ 1791 iov[i].iov_len = strlen(iov[i].iov_base), \ 1792 i++) 1793 #else 1794 #define IOADD(void)write(2, s, strlen(s)) 1795 #endif 1796 1797 IOADD(progname); 1798 IOADD(": "); 1799 IOADD(af); 1800 IOADD("("); 1801 IOADD(av); 1802 IOADD(") failed ("); 1803 IOADD(strerror(errno)); 1804 IOADD(")\n"); 1805 1806 #ifdef USE_IOVEC 1807 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1808 continue; 1809 #endif 1810 } 1811 1812 /* 1813 * usage -- 1814 * exit with usage message 1815 */ 1816 static void 1817 usage(void) 1818 { 1819 char *p; 1820 if ((p = strchr(progname, '[')) != NULL) 1821 *p = '\0'; 1822 1823 (void)fprintf(stderr, 1824 "usage: %s [-BeikNnqrstWwX] \n\ 1825 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1826 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1827 [-V variable] [variable=value] [target ...]\n", progname); 1828 exit(2); 1829 } 1830 1831 /*- 1832 *----------------------------------------------------------------------- 1833 * MarkSysMkTargets -- set OP_FROM_SYS_MK on a target node in Lst_ForEach(). 1834 * 1835 * Input: 1836 * target node to set the attribute on (GNode *) 1837 * 1838 * Results: 1839 * Always 0 to not abort Lst_ForEach() prematurely. 1840 *----------------------------------------------------------------------- 1841 */ 1842 static int 1843 MarkSysMkTargets(void *target, void *unused) 1844 { 1845 (void)unused; 1846 ((GNode *)target)->type |= OP_FROM_SYS_MK; 1847 return 0; 1848 } 1849 1850 1851 int 1852 PrintAddr(void *a, void *b) 1853 { 1854 printf("%lx ", (unsigned long) a); 1855 return b ? 0 : 0; 1856 } 1857 1858 1859 1860 void 1861 PrintOnError(GNode *gn, const char *s) 1862 { 1863 static GNode *en = NULL; 1864 char tmp[64]; 1865 char *cp; 1866 1867 if (s) 1868 printf("%s", s); 1869 1870 printf("\n%s: stopped in %s\n", progname, curdir); 1871 1872 if (en) 1873 return; /* we've been here! */ 1874 if (gn) { 1875 /* 1876 * We can print this even if there is no .ERROR target. 1877 */ 1878 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1879 } 1880 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1881 sizeof(tmp) - 1); 1882 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1883 if (cp) { 1884 if (*cp) 1885 printf("%s", cp); 1886 free(cp); 1887 } 1888 /* 1889 * Finally, see if there is a .ERROR target, and run it if so. 1890 */ 1891 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1892 if (en) { 1893 en->type |= OP_SPECIAL; 1894 Compat_Make(en, en); 1895 } 1896 } 1897 1898 void 1899 Main_ExportMAKEFLAGS(Boolean first) 1900 { 1901 static int once = 1; 1902 char tmp[64]; 1903 char *s; 1904 1905 if (once != first) 1906 return; 1907 once = 0; 1908 1909 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1910 sizeof(tmp)); 1911 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1912 if (s && *s) { 1913 #ifdef POSIX 1914 setenv("MAKEFLAGS", s, 1); 1915 #else 1916 setenv("MAKE", s, 1); 1917 #endif 1918 } 1919 } 1920 1921 char * 1922 getTmpdir(void) 1923 { 1924 static char *tmpdir = NULL; 1925 1926 if (!tmpdir) { 1927 struct stat st; 1928 1929 /* 1930 * Honor $TMPDIR but only if it is valid. 1931 * Ensure it ends with /. 1932 */ 1933 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1934 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1935 free(tmpdir); 1936 tmpdir = bmake_strdup(_PATH_TMP); 1937 } 1938 } 1939 return tmpdir; 1940 } 1941 1942 /* 1943 * Create and open a temp file using "pattern". 1944 * If "fnamep" is provided set it to a copy of the filename created. 1945 * Otherwise unlink the file once open. 1946 */ 1947 int 1948 mkTempFile(const char *pattern, char **fnamep) 1949 { 1950 static char *tmpdir = NULL; 1951 char tfile[MAXPATHLEN]; 1952 int fd; 1953 1954 if (!pattern) 1955 pattern = TMPPAT; 1956 if (!tmpdir) 1957 tmpdir = getTmpdir(); 1958 if (pattern[0] == '/') { 1959 snprintf(tfile, sizeof(tfile), "%s", pattern); 1960 } else { 1961 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1962 } 1963 if ((fd = mkstemp(tfile)) < 0) 1964 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1965 if (fnamep) { 1966 *fnamep = bmake_strdup(tfile); 1967 } else { 1968 unlink(tfile); /* we just want the descriptor */ 1969 } 1970 return fd; 1971 } 1972 1973 1974 /* 1975 * Return a Boolean based on setting of a knob. 1976 * 1977 * If the knob is not set, the supplied default is the return value. 1978 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1979 * is FALSE, otherwise TRUE. 1980 */ 1981 Boolean 1982 getBoolean(const char *name, Boolean bf) 1983 { 1984 char tmp[64]; 1985 char *cp; 1986 1987 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1988 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1989 1990 if (cp) { 1991 switch(*cp) { 1992 case '\0': /* not set - the default wins */ 1993 break; 1994 case '0': 1995 case 'f': 1996 case 'n': 1997 bf = FALSE; 1998 break; 1999 case 'o': 2000 switch (cp[1]) { 2001 case 'f': 2002 bf = FALSE; 2003 break; 2004 default: 2005 bf = TRUE; 2006 break; 2007 } 2008 break; 2009 default: 2010 bf = TRUE; 2011 break; 2012 } 2013 free(cp); 2014 } 2015 } 2016 return (bf); 2017 } 2018