main.c revision 1.207
1 /* $NetBSD: main.c,v 1.207 2013/02/16 02:39:27 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 1.207 2013/02/16 02:39:27 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 1.207 2013/02/16 02:39:27 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 <sys/signal.h> 121 #include <sys/stat.h> 122 #include <sys/utsname.h> 123 #include <sys/wait.h> 124 125 #include <errno.h> 126 #include <fcntl.h> 127 #include <stdarg.h> 128 #include <stdio.h> 129 #include <stdlib.h> 130 #include <time.h> 131 132 #include "make.h" 133 #include "hash.h" 134 #include "dir.h" 135 #include "job.h" 136 #include "pathnames.h" 137 #include "trace.h" 138 139 #ifdef USE_IOVEC 140 #include <sys/uio.h> 141 #endif 142 143 #ifndef DEFMAXLOCAL 144 #define DEFMAXLOCAL DEFMAXJOBS 145 #endif /* DEFMAXLOCAL */ 146 147 Lst create; /* Targets to be made */ 148 time_t now; /* Time at start of make */ 149 GNode *DEFAULT; /* .DEFAULT node */ 150 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 151 152 static Boolean noBuiltins; /* -r flag */ 153 static Lst makefiles; /* ordered list of makefiles to read */ 154 static Boolean printVars; /* print value of one or more vars */ 155 static Lst variables; /* list of variables to print */ 156 int maxJobs; /* -j argument */ 157 static int maxJobTokens; /* -j argument */ 158 Boolean compatMake; /* -B argument */ 159 int debug; /* -d argument */ 160 Boolean debugVflag; /* -dV */ 161 Boolean noExecute; /* -n flag */ 162 Boolean noRecursiveExecute; /* -N flag */ 163 Boolean keepgoing; /* -k flag */ 164 Boolean queryFlag; /* -q flag */ 165 Boolean touchFlag; /* -t flag */ 166 Boolean ignoreErrors; /* -i flag */ 167 Boolean beSilent; /* -s flag */ 168 Boolean oldVars; /* variable substitution style */ 169 Boolean checkEnvFirst; /* -e flag */ 170 Boolean parseWarnFatal; /* -W flag */ 171 Boolean jobServer; /* -J flag */ 172 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 173 Boolean varNoExportEnv; /* -X flag */ 174 Boolean doing_depend; /* Set while reading .depend */ 175 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 176 static const char * tracefile; 177 static void MainParseArgs(int, char **); 178 static int ReadMakefile(const void *, const void *); 179 static void usage(void) MAKE_ATTR_DEAD; 180 181 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 182 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 183 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 184 char *progname; /* the program name */ 185 char *makeDependfile; 186 pid_t myPid; 187 188 Boolean forceJobs = FALSE; 189 190 extern Lst parseIncPath; 191 192 static void 193 parse_debug_options(const char *argvalue) 194 { 195 const char *modules; 196 const char *mode; 197 char *fname; 198 int len; 199 200 for (modules = argvalue; *modules; ++modules) { 201 switch (*modules) { 202 case 'A': 203 debug = ~0; 204 break; 205 case 'a': 206 debug |= DEBUG_ARCH; 207 break; 208 case 'C': 209 debug |= DEBUG_CWD; 210 break; 211 case 'c': 212 debug |= DEBUG_COND; 213 break; 214 case 'd': 215 debug |= DEBUG_DIR; 216 break; 217 case 'e': 218 debug |= DEBUG_ERROR; 219 break; 220 case 'f': 221 debug |= DEBUG_FOR; 222 break; 223 case 'g': 224 if (modules[1] == '1') { 225 debug |= DEBUG_GRAPH1; 226 ++modules; 227 } 228 else if (modules[1] == '2') { 229 debug |= DEBUG_GRAPH2; 230 ++modules; 231 } 232 else if (modules[1] == '3') { 233 debug |= DEBUG_GRAPH3; 234 ++modules; 235 } 236 break; 237 case 'j': 238 debug |= DEBUG_JOB; 239 break; 240 case 'l': 241 debug |= DEBUG_LOUD; 242 break; 243 case 'M': 244 debug |= DEBUG_META; 245 break; 246 case 'm': 247 debug |= DEBUG_MAKE; 248 break; 249 case 'n': 250 debug |= DEBUG_SCRIPT; 251 break; 252 case 'p': 253 debug |= DEBUG_PARSE; 254 break; 255 case 's': 256 debug |= DEBUG_SUFF; 257 break; 258 case 't': 259 debug |= DEBUG_TARG; 260 break; 261 case 'V': 262 debugVflag = TRUE; 263 break; 264 case 'v': 265 debug |= DEBUG_VAR; 266 break; 267 case 'x': 268 debug |= DEBUG_SHELL; 269 break; 270 case 'F': 271 if (debug_file != stdout && debug_file != stderr) 272 fclose(debug_file); 273 if (*++modules == '+') { 274 modules++; 275 mode = "a"; 276 } else 277 mode = "w"; 278 if (strcmp(modules, "stdout") == 0) { 279 debug_file = stdout; 280 goto debug_setbuf; 281 } 282 if (strcmp(modules, "stderr") == 0) { 283 debug_file = stderr; 284 goto debug_setbuf; 285 } 286 len = strlen(modules); 287 fname = malloc(len + 20); 288 memcpy(fname, modules, len + 1); 289 /* Let the filename be modified by the pid */ 290 if (strcmp(fname + len - 3, ".%d") == 0) 291 snprintf(fname + len - 2, 20, "%d", getpid()); 292 debug_file = fopen(fname, mode); 293 if (!debug_file) { 294 fprintf(stderr, "Cannot open debug file %s\n", 295 fname); 296 usage(); 297 } 298 free(fname); 299 goto debug_setbuf; 300 default: 301 (void)fprintf(stderr, 302 "%s: illegal argument to d option -- %c\n", 303 progname, *modules); 304 usage(); 305 } 306 } 307 debug_setbuf: 308 /* 309 * Make the debug_file unbuffered, and make 310 * stdout line buffered (unless debugfile == stdout). 311 */ 312 setvbuf(debug_file, NULL, _IONBF, 0); 313 if (debug_file != stdout) { 314 setvbuf(stdout, NULL, _IOLBF, 0); 315 } 316 } 317 318 /*- 319 * MainParseArgs -- 320 * Parse a given argument vector. Called from main() and from 321 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 322 * 323 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 324 * 325 * Results: 326 * None 327 * 328 * Side Effects: 329 * Various global and local flags will be set depending on the flags 330 * given 331 */ 332 static void 333 MainParseArgs(int argc, char **argv) 334 { 335 char *p; 336 int c = '?'; 337 int arginc; 338 char *argvalue; 339 const char *getopt_def; 340 char *optscan; 341 Boolean inOption, dashDash = FALSE; 342 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 343 344 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst" 345 /* Can't actually use getopt(3) because rescanning is not portable */ 346 347 getopt_def = OPTFLAGS; 348 rearg: 349 inOption = FALSE; 350 optscan = NULL; 351 while(argc > 1) { 352 char *getopt_spec; 353 if(!inOption) 354 optscan = argv[1]; 355 c = *optscan++; 356 arginc = 0; 357 if(inOption) { 358 if(c == '\0') { 359 ++argv; 360 --argc; 361 inOption = FALSE; 362 continue; 363 } 364 } else { 365 if (c != '-' || dashDash) 366 break; 367 inOption = TRUE; 368 c = *optscan++; 369 } 370 /* '-' found at some earlier point */ 371 getopt_spec = strchr(getopt_def, c); 372 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 373 /* -<something> found, and <something> should have an arg */ 374 inOption = FALSE; 375 arginc = 1; 376 argvalue = optscan; 377 if(*argvalue == '\0') { 378 if (argc < 3) 379 goto noarg; 380 argvalue = argv[2]; 381 arginc = 2; 382 } 383 } else { 384 argvalue = NULL; 385 } 386 switch(c) { 387 case '\0': 388 arginc = 1; 389 inOption = FALSE; 390 break; 391 case 'B': 392 compatMake = TRUE; 393 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 394 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 395 break; 396 case 'C': 397 if (chdir(argvalue) == -1) { 398 (void)fprintf(stderr, 399 "%s: chdir %s: %s\n", 400 progname, argvalue, 401 strerror(errno)); 402 exit(1); 403 } 404 if (getcwd(curdir, MAXPATHLEN) == NULL) { 405 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 406 exit(2); 407 } 408 ignorePWD = TRUE; 409 break; 410 case 'D': 411 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 412 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 413 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 414 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 415 break; 416 case 'I': 417 if (argvalue == NULL) goto noarg; 418 Parse_AddIncludeDir(argvalue); 419 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 420 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 421 break; 422 case 'J': 423 if (argvalue == NULL) goto noarg; 424 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 425 (void)fprintf(stderr, 426 "%s: internal error -- J option malformed (%s)\n", 427 progname, argvalue); 428 usage(); 429 } 430 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 431 (fcntl(jp_1, F_GETFD, 0) < 0)) { 432 #if 0 433 (void)fprintf(stderr, 434 "%s: ###### warning -- J descriptors were closed!\n", 435 progname); 436 exit(2); 437 #endif 438 jp_0 = -1; 439 jp_1 = -1; 440 compatMake = TRUE; 441 } else { 442 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 443 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 444 jobServer = TRUE; 445 } 446 break; 447 case 'N': 448 noExecute = TRUE; 449 noRecursiveExecute = TRUE; 450 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 451 break; 452 case 'S': 453 keepgoing = FALSE; 454 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 455 break; 456 case 'T': 457 if (argvalue == NULL) goto noarg; 458 tracefile = bmake_strdup(argvalue); 459 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 460 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 461 break; 462 case 'V': 463 if (argvalue == NULL) goto noarg; 464 printVars = TRUE; 465 (void)Lst_AtEnd(variables, argvalue); 466 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 467 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 468 break; 469 case 'W': 470 parseWarnFatal = TRUE; 471 break; 472 case 'X': 473 varNoExportEnv = TRUE; 474 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 475 break; 476 case 'd': 477 if (argvalue == NULL) goto noarg; 478 /* If '-d-opts' don't pass to children */ 479 if (argvalue[0] == '-') 480 argvalue++; 481 else { 482 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 483 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 484 } 485 parse_debug_options(argvalue); 486 break; 487 case 'e': 488 checkEnvFirst = TRUE; 489 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 490 break; 491 case 'f': 492 if (argvalue == NULL) goto noarg; 493 (void)Lst_AtEnd(makefiles, argvalue); 494 break; 495 case 'i': 496 ignoreErrors = TRUE; 497 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 498 break; 499 case 'j': 500 if (argvalue == NULL) goto noarg; 501 forceJobs = TRUE; 502 maxJobs = strtol(argvalue, &p, 0); 503 if (*p != '\0' || maxJobs < 1) { 504 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 505 progname); 506 exit(1); 507 } 508 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 509 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 510 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 511 maxJobTokens = maxJobs; 512 break; 513 case 'k': 514 keepgoing = TRUE; 515 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 516 break; 517 case 'm': 518 if (argvalue == NULL) goto noarg; 519 /* look for magic parent directory search string */ 520 if (strncmp(".../", argvalue, 4) == 0) { 521 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 522 found_path, sizeof(found_path))) 523 break; /* nothing doing */ 524 (void)Dir_AddDir(sysIncPath, found_path); 525 } else { 526 (void)Dir_AddDir(sysIncPath, argvalue); 527 } 528 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 529 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 530 break; 531 case 'n': 532 noExecute = TRUE; 533 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 534 break; 535 case 'q': 536 queryFlag = TRUE; 537 /* Kind of nonsensical, wot? */ 538 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 539 break; 540 case 'r': 541 noBuiltins = TRUE; 542 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 543 break; 544 case 's': 545 beSilent = TRUE; 546 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 547 break; 548 case 't': 549 touchFlag = TRUE; 550 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 551 break; 552 case '-': 553 dashDash = TRUE; 554 break; 555 default: 556 case '?': 557 usage(); 558 } 559 argv += arginc; 560 argc -= arginc; 561 } 562 563 oldVars = TRUE; 564 565 /* 566 * See if the rest of the arguments are variable assignments and 567 * perform them if so. Else take them to be targets and stuff them 568 * on the end of the "create" list. 569 */ 570 for (; argc > 1; ++argv, --argc) 571 if (Parse_IsVar(argv[1])) { 572 Parse_DoVar(argv[1], VAR_CMD); 573 } else { 574 if (!*argv[1]) 575 Punt("illegal (null) argument."); 576 if (*argv[1] == '-' && !dashDash) 577 goto rearg; 578 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 579 } 580 581 return; 582 noarg: 583 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 584 progname, c); 585 usage(); 586 } 587 588 /*- 589 * Main_ParseArgLine -- 590 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 591 * is encountered and by main() when reading the .MAKEFLAGS envariable. 592 * Takes a line of arguments and breaks it into its 593 * component words and passes those words and the number of them to the 594 * MainParseArgs function. 595 * The line should have all its leading whitespace removed. 596 * 597 * Input: 598 * line Line to fracture 599 * 600 * Results: 601 * None 602 * 603 * Side Effects: 604 * Only those that come from the various arguments. 605 */ 606 void 607 Main_ParseArgLine(const char *line) 608 { 609 char **argv; /* Manufactured argument vector */ 610 int argc; /* Number of arguments in argv */ 611 char *args; /* Space used by the args */ 612 char *buf, *p1; 613 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 614 size_t len; 615 616 if (line == NULL) 617 return; 618 for (; *line == ' '; ++line) 619 continue; 620 if (!*line) 621 return; 622 623 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 624 (void)snprintf(buf, len, "%s %s", argv0, line); 625 if (p1) 626 free(p1); 627 628 argv = brk_string(buf, &argc, TRUE, &args); 629 if (argv == NULL) { 630 Error("Unterminated quoted string [%s]", buf); 631 free(buf); 632 return; 633 } 634 free(buf); 635 MainParseArgs(argc, argv); 636 637 free(args); 638 free(argv); 639 } 640 641 Boolean 642 Main_SetObjdir(const char *path) 643 { 644 struct stat sb; 645 char *p = NULL; 646 char buf[MAXPATHLEN + 1]; 647 Boolean rc = FALSE; 648 649 /* expand variable substitutions */ 650 if (strchr(path, '$') != 0) { 651 snprintf(buf, MAXPATHLEN, "%s", path); 652 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 653 } 654 655 if (path[0] != '/') { 656 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 657 path = buf; 658 } 659 660 /* look for the directory and try to chdir there */ 661 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 662 if (chdir(path)) { 663 (void)fprintf(stderr, "make warning: %s: %s.\n", 664 path, strerror(errno)); 665 } else { 666 strncpy(objdir, path, MAXPATHLEN); 667 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 668 setenv("PWD", objdir, 1); 669 Dir_InitDot(); 670 rc = TRUE; 671 } 672 } 673 674 if (p) 675 free(p); 676 return rc; 677 } 678 679 /*- 680 * ReadAllMakefiles -- 681 * wrapper around ReadMakefile() to read all. 682 * 683 * Results: 684 * TRUE if ok, FALSE on error 685 */ 686 static int 687 ReadAllMakefiles(const void *p, const void *q) 688 { 689 return (ReadMakefile(p, q) == 0); 690 } 691 692 int 693 str2Lst_Append(Lst lp, char *str, const char *sep) 694 { 695 char *cp; 696 int n; 697 698 if (!sep) 699 sep = " \t"; 700 701 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 702 (void)Lst_AtEnd(lp, cp); 703 n++; 704 } 705 return (n); 706 } 707 708 #ifdef SIGINFO 709 /*ARGSUSED*/ 710 static void 711 siginfo(int signo MAKE_ATTR_UNUSED) 712 { 713 char dir[MAXPATHLEN]; 714 char str[2 * MAXPATHLEN]; 715 int len; 716 if (getcwd(dir, sizeof(dir)) == NULL) 717 return; 718 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 719 if (len > 0) 720 (void)write(STDERR_FILENO, str, (size_t)len); 721 } 722 #endif 723 724 /* 725 * Allow makefiles some control over the mode we run in. 726 */ 727 void 728 MakeMode(const char *mode) 729 { 730 char *mp = NULL; 731 732 if (!mode) 733 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 734 735 if (mode && *mode) { 736 if (strstr(mode, "compat")) { 737 compatMake = TRUE; 738 forceJobs = FALSE; 739 } 740 #if USE_META 741 if (strstr(mode, "meta")) 742 meta_init(mode); 743 #endif 744 } 745 if (mp) 746 free(mp); 747 } 748 749 /*- 750 * main -- 751 * The main function, for obvious reasons. Initializes variables 752 * and a few modules, then parses the arguments give it in the 753 * environment and on the command line. Reads the system makefile 754 * followed by either Makefile, makefile or the file given by the 755 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 756 * flags it has received by then uses either the Make or the Compat 757 * module to create the initial list of targets. 758 * 759 * Results: 760 * If -q was given, exits -1 if anything was out-of-date. Else it exits 761 * 0. 762 * 763 * Side Effects: 764 * The program exits when done. Targets are created. etc. etc. etc. 765 */ 766 int 767 main(int argc, char **argv) 768 { 769 Lst targs; /* target nodes to create -- passed to Make_Init */ 770 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 771 struct stat sb, sa; 772 char *p1, *path, *pwd; 773 char mdpath[MAXPATHLEN]; 774 const char *machine = getenv("MACHINE"); 775 const char *machine_arch = getenv("MACHINE_ARCH"); 776 char *syspath = getenv("MAKESYSPATH"); 777 Lst sysMkPath; /* Path of sys.mk */ 778 char *cp = NULL, *start; 779 /* avoid faults on read-only strings */ 780 static char defsyspath[] = _PATH_DEFSYSPATH; 781 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 782 struct timeval rightnow; /* to initialize random seed */ 783 struct utsname utsname; 784 785 /* default to writing debug to stderr */ 786 debug_file = stderr; 787 788 #ifdef SIGINFO 789 (void)bmake_signal(SIGINFO, siginfo); 790 #endif 791 /* 792 * Set the seed to produce a different random sequence 793 * on each program execution. 794 */ 795 gettimeofday(&rightnow, NULL); 796 srandom(rightnow.tv_sec + rightnow.tv_usec); 797 798 if ((progname = strrchr(argv[0], '/')) != NULL) 799 progname++; 800 else 801 progname = argv[0]; 802 #ifdef RLIMIT_NOFILE 803 /* 804 * get rid of resource limit on file descriptors 805 */ 806 { 807 struct rlimit rl; 808 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 809 rl.rlim_cur != rl.rlim_max) { 810 rl.rlim_cur = rl.rlim_max; 811 (void)setrlimit(RLIMIT_NOFILE, &rl); 812 } 813 } 814 #endif 815 816 if (uname(&utsname) == -1) { 817 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 818 strerror(errno)); 819 exit(2); 820 } 821 822 /* 823 * Get the name of this type of MACHINE from utsname 824 * so we can share an executable for similar machines. 825 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 826 * 827 * Note that both MACHINE and MACHINE_ARCH are decided at 828 * run-time. 829 */ 830 if (!machine) { 831 #ifdef MAKE_NATIVE 832 machine = utsname.machine; 833 #else 834 #ifdef MAKE_MACHINE 835 machine = MAKE_MACHINE; 836 #else 837 machine = "unknown"; 838 #endif 839 #endif 840 } 841 842 if (!machine_arch) { 843 #ifndef MACHINE_ARCH 844 #ifdef MAKE_MACHINE_ARCH 845 machine_arch = MAKE_MACHINE_ARCH; 846 #else 847 machine_arch = "unknown"; 848 #endif 849 #else 850 machine_arch = MACHINE_ARCH; 851 #endif 852 } 853 854 myPid = getpid(); /* remember this for vFork() */ 855 856 /* 857 * Just in case MAKEOBJDIR wants us to do something tricky. 858 */ 859 Var_Init(); /* Initialize the lists of variables for 860 * parsing arguments */ 861 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 862 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 863 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 864 #ifdef MAKE_VERSION 865 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 866 #endif 867 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 868 /* 869 * This is the traditional preference for makefiles. 870 */ 871 #ifndef MAKEFILE_PREFERENCE_LIST 872 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 873 #endif 874 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 875 VAR_GLOBAL, 0); 876 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 877 878 create = Lst_Init(FALSE); 879 makefiles = Lst_Init(FALSE); 880 printVars = FALSE; 881 debugVflag = FALSE; 882 variables = Lst_Init(FALSE); 883 beSilent = FALSE; /* Print commands as executed */ 884 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 885 noExecute = FALSE; /* Execute all commands */ 886 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 887 keepgoing = FALSE; /* Stop on error */ 888 allPrecious = FALSE; /* Remove targets when interrupted */ 889 queryFlag = FALSE; /* This is not just a check-run */ 890 noBuiltins = FALSE; /* Read the built-in rules */ 891 touchFlag = FALSE; /* Actually update targets */ 892 debug = 0; /* No debug verbosity, please. */ 893 jobsRunning = FALSE; 894 895 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 896 maxJobTokens = maxJobs; 897 compatMake = FALSE; /* No compat mode */ 898 ignorePWD = FALSE; 899 900 /* 901 * Initialize the parsing, directory and variable modules to prepare 902 * for the reading of inclusion paths and variable settings on the 903 * command line 904 */ 905 906 /* 907 * Initialize various variables. 908 * MAKE also gets this name, for compatibility 909 * .MAKEFLAGS gets set to the empty string just in case. 910 * MFLAGS also gets initialized empty, for compatibility. 911 */ 912 Parse_Init(); 913 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 914 /* 915 * Leave alone if it is an absolute path, or if it does 916 * not contain a '/' in which case we need to find it in 917 * the path, like execvp(3) and the shells do. 918 */ 919 p1 = argv[0]; 920 } else { 921 /* 922 * A relative path, canonicalize it. 923 */ 924 p1 = realpath(argv[0], mdpath); 925 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 926 p1 = argv[0]; /* realpath failed */ 927 } 928 } 929 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 930 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 931 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 932 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 933 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 934 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 935 936 /* 937 * Set some other useful macros 938 */ 939 { 940 char tmp[64]; 941 const char *ep; 942 943 if (!(ep = getenv(MAKE_LEVEL))) { 944 ep = "0"; 945 } 946 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0); 947 snprintf(tmp, sizeof(tmp), "%u", myPid); 948 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 949 snprintf(tmp, sizeof(tmp), "%u", getppid()); 950 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 951 } 952 Job_SetPrefix(); 953 954 /* 955 * First snag any flags out of the MAKE environment variable. 956 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 957 * in a different format). 958 */ 959 #ifdef POSIX 960 Main_ParseArgLine(getenv("MAKEFLAGS")); 961 #else 962 Main_ParseArgLine(getenv("MAKE")); 963 #endif 964 965 /* 966 * Find where we are (now). 967 * We take care of PWD for the automounter below... 968 */ 969 if (getcwd(curdir, MAXPATHLEN) == NULL) { 970 (void)fprintf(stderr, "%s: getcwd: %s.\n", 971 progname, strerror(errno)); 972 exit(2); 973 } 974 975 MainParseArgs(argc, argv); 976 977 /* 978 * Verify that cwd is sane. 979 */ 980 if (stat(curdir, &sa) == -1) { 981 (void)fprintf(stderr, "%s: %s: %s.\n", 982 progname, curdir, strerror(errno)); 983 exit(2); 984 } 985 986 /* 987 * All this code is so that we know where we are when we start up 988 * on a different machine with pmake. 989 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 990 * since the value of curdir can vary depending on how we got 991 * here. Ie sitting at a shell prompt (shell that provides $PWD) 992 * or via subdir.mk in which case its likely a shell which does 993 * not provide it. 994 * So, to stop it breaking this case only, we ignore PWD if 995 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 996 */ 997 if (!ignorePWD && 998 (pwd = getenv("PWD")) != NULL && 999 getenv("MAKEOBJDIRPREFIX") == NULL) { 1000 const char *makeobjdir = getenv("MAKEOBJDIR"); 1001 1002 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1003 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 1004 sa.st_dev == sb.st_dev) 1005 (void)strncpy(curdir, pwd, MAXPATHLEN); 1006 } 1007 } 1008 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1009 1010 /* 1011 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1012 * MAKEOBJDIR is set in the environment, try only that value 1013 * and fall back to .CURDIR if it does not exist. 1014 * 1015 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1016 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1017 * of these paths exist, just use .CURDIR. 1018 */ 1019 Dir_Init(curdir); 1020 (void)Main_SetObjdir(curdir); 1021 1022 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1023 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1024 (void)Main_SetObjdir(mdpath); 1025 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1026 (void)Main_SetObjdir(path); 1027 } else { 1028 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1029 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1030 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1031 _PATH_OBJDIRPREFIX, curdir); 1032 (void)Main_SetObjdir(mdpath); 1033 } 1034 } 1035 1036 /* 1037 * Be compatible if user did not specify -j and did not explicitly 1038 * turned compatibility on 1039 */ 1040 if (!compatMake && !forceJobs) { 1041 compatMake = TRUE; 1042 } 1043 1044 /* 1045 * Initialize archive, target and suffix modules in preparation for 1046 * parsing the makefile(s) 1047 */ 1048 Arch_Init(); 1049 Targ_Init(); 1050 Suff_Init(); 1051 Trace_Init(tracefile); 1052 1053 DEFAULT = NULL; 1054 (void)time(&now); 1055 1056 Trace_Log(MAKESTART, NULL); 1057 1058 /* 1059 * Set up the .TARGETS variable to contain the list of targets to be 1060 * created. If none specified, make the variable empty -- the parser 1061 * will fill the thing in with the default or .MAIN target. 1062 */ 1063 if (!Lst_IsEmpty(create)) { 1064 LstNode ln; 1065 1066 for (ln = Lst_First(create); ln != NULL; 1067 ln = Lst_Succ(ln)) { 1068 char *name = (char *)Lst_Datum(ln); 1069 1070 Var_Append(".TARGETS", name, VAR_GLOBAL); 1071 } 1072 } else 1073 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1074 1075 1076 /* 1077 * If no user-supplied system path was given (through the -m option) 1078 * add the directories from the DEFSYSPATH (more than one may be given 1079 * as dir1:...:dirn) to the system include path. 1080 */ 1081 if (syspath == NULL || *syspath == '\0') 1082 syspath = defsyspath; 1083 else 1084 syspath = bmake_strdup(syspath); 1085 1086 for (start = syspath; *start != '\0'; start = cp) { 1087 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1088 continue; 1089 if (*cp == ':') { 1090 *cp++ = '\0'; 1091 } 1092 /* look for magic parent directory search string */ 1093 if (strncmp(".../", start, 4) != 0) { 1094 (void)Dir_AddDir(defIncPath, start); 1095 } else { 1096 if (Dir_FindHereOrAbove(curdir, start+4, 1097 found_path, sizeof(found_path))) { 1098 (void)Dir_AddDir(defIncPath, found_path); 1099 } 1100 } 1101 } 1102 if (syspath != defsyspath) 1103 free(syspath); 1104 1105 /* 1106 * Read in the built-in rules first, followed by the specified 1107 * makefile, if it was (makefile != NULL), or the default 1108 * makefile and Makefile, in that order, if it wasn't. 1109 */ 1110 if (!noBuiltins) { 1111 LstNode ln; 1112 1113 sysMkPath = Lst_Init(FALSE); 1114 Dir_Expand(_PATH_DEFSYSMK, 1115 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1116 sysMkPath); 1117 if (Lst_IsEmpty(sysMkPath)) 1118 Fatal("%s: no system rules (%s).", progname, 1119 _PATH_DEFSYSMK); 1120 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1121 if (ln == NULL) 1122 Fatal("%s: cannot open %s.", progname, 1123 (char *)Lst_Datum(ln)); 1124 } 1125 1126 if (!Lst_IsEmpty(makefiles)) { 1127 LstNode ln; 1128 1129 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1130 if (ln != NULL) 1131 Fatal("%s: cannot open %s.", progname, 1132 (char *)Lst_Datum(ln)); 1133 } else { 1134 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1135 VAR_CMD, 0); 1136 if (p1) { 1137 (void)str2Lst_Append(makefiles, p1, NULL); 1138 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1139 free(p1); 1140 } 1141 } 1142 1143 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1144 if (!noBuiltins || !printVars) { 1145 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1146 VAR_CMD, 0); 1147 doing_depend = TRUE; 1148 (void)ReadMakefile(makeDependfile, NULL); 1149 doing_depend = FALSE; 1150 } 1151 1152 MakeMode(NULL); 1153 1154 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1155 if (p1) 1156 free(p1); 1157 1158 if (!compatMake) 1159 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1160 if (DEBUG(JOB)) 1161 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1162 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1163 1164 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1165 1166 1167 /* 1168 * For compatibility, look at the directories in the VPATH variable 1169 * and add them to the search path, if the variable is defined. The 1170 * variable's value is in the same format as the PATH envariable, i.e. 1171 * <directory>:<directory>:<directory>... 1172 */ 1173 if (Var_Exists("VPATH", VAR_CMD)) { 1174 char *vpath, savec; 1175 /* 1176 * GCC stores string constants in read-only memory, but 1177 * Var_Subst will want to write this thing, so store it 1178 * in an array 1179 */ 1180 static char VPATH[] = "${VPATH}"; 1181 1182 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1183 path = vpath; 1184 do { 1185 /* skip to end of directory */ 1186 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1187 continue; 1188 /* Save terminator character so know when to stop */ 1189 savec = *cp; 1190 *cp = '\0'; 1191 /* Add directory to search path */ 1192 (void)Dir_AddDir(dirSearchPath, path); 1193 *cp = savec; 1194 path = cp + 1; 1195 } while (savec == ':'); 1196 free(vpath); 1197 } 1198 1199 /* 1200 * Now that all search paths have been read for suffixes et al, it's 1201 * time to add the default search path to their lists... 1202 */ 1203 Suff_DoPaths(); 1204 1205 /* 1206 * Propagate attributes through :: dependency lists. 1207 */ 1208 Targ_Propagate(); 1209 1210 /* print the initial graph, if the user requested it */ 1211 if (DEBUG(GRAPH1)) 1212 Targ_PrintGraph(1); 1213 1214 /* print the values of any variables requested by the user */ 1215 if (printVars) { 1216 LstNode ln; 1217 Boolean expandVars; 1218 1219 if (debugVflag) 1220 expandVars = FALSE; 1221 else 1222 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1223 for (ln = Lst_First(variables); ln != NULL; 1224 ln = Lst_Succ(ln)) { 1225 char *var = (char *)Lst_Datum(ln); 1226 char *value; 1227 1228 if (strchr(var, '$')) { 1229 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1230 } else if (expandVars) { 1231 char tmp[128]; 1232 1233 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1234 Fatal("%s: variable name too big: %s", 1235 progname, var); 1236 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1237 } else { 1238 value = Var_Value(var, VAR_GLOBAL, &p1); 1239 } 1240 printf("%s\n", value ? value : ""); 1241 if (p1) 1242 free(p1); 1243 } 1244 } else { 1245 /* 1246 * Have now read the entire graph and need to make a list of 1247 * targets to create. If none was given on the command line, 1248 * we consult the parsing module to find the main target(s) 1249 * to create. 1250 */ 1251 if (Lst_IsEmpty(create)) 1252 targs = Parse_MainName(); 1253 else 1254 targs = Targ_FindList(create, TARG_CREATE); 1255 1256 if (!compatMake) { 1257 /* 1258 * Initialize job module before traversing the graph 1259 * now that any .BEGIN and .END targets have been read. 1260 * This is done only if the -q flag wasn't given 1261 * (to prevent the .BEGIN from being executed should 1262 * it exist). 1263 */ 1264 if (!queryFlag) { 1265 Job_Init(); 1266 jobsRunning = TRUE; 1267 } 1268 1269 /* Traverse the graph, checking on all the targets */ 1270 outOfDate = Make_Run(targs); 1271 } else { 1272 /* 1273 * Compat_Init will take care of creating all the 1274 * targets as well as initializing the module. 1275 */ 1276 Compat_Run(targs); 1277 } 1278 } 1279 1280 #ifdef CLEANUP 1281 Lst_Destroy(targs, NULL); 1282 Lst_Destroy(variables, NULL); 1283 Lst_Destroy(makefiles, NULL); 1284 Lst_Destroy(create, (FreeProc *)free); 1285 #endif 1286 1287 /* print the graph now it's been processed if the user requested it */ 1288 if (DEBUG(GRAPH2)) 1289 Targ_PrintGraph(2); 1290 1291 Trace_Log(MAKEEND, 0); 1292 1293 Suff_End(); 1294 Targ_End(); 1295 Arch_End(); 1296 Var_End(); 1297 Parse_End(); 1298 Dir_End(); 1299 Job_End(); 1300 Trace_End(); 1301 1302 return outOfDate ? 1 : 0; 1303 } 1304 1305 /*- 1306 * ReadMakefile -- 1307 * Open and parse the given makefile. 1308 * 1309 * Results: 1310 * 0 if ok. -1 if couldn't open file. 1311 * 1312 * Side Effects: 1313 * lots 1314 */ 1315 static int 1316 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1317 { 1318 const char *fname = p; /* makefile to read */ 1319 int fd; 1320 size_t len = MAXPATHLEN; 1321 char *name, *path = bmake_malloc(len); 1322 1323 if (!strcmp(fname, "-")) { 1324 Parse_File(NULL /*stdin*/, -1); 1325 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1326 } else { 1327 /* if we've chdir'd, rebuild the path name */ 1328 if (strcmp(curdir, objdir) && *fname != '/') { 1329 size_t plen = strlen(curdir) + strlen(fname) + 2; 1330 if (len < plen) 1331 path = bmake_realloc(path, len = 2 * plen); 1332 1333 (void)snprintf(path, len, "%s/%s", curdir, fname); 1334 fd = open(path, O_RDONLY); 1335 if (fd != -1) { 1336 fname = path; 1337 goto found; 1338 } 1339 1340 /* If curdir failed, try objdir (ala .depend) */ 1341 plen = strlen(objdir) + strlen(fname) + 2; 1342 if (len < plen) 1343 path = bmake_realloc(path, len = 2 * plen); 1344 (void)snprintf(path, len, "%s/%s", objdir, fname); 1345 fd = open(path, O_RDONLY); 1346 if (fd != -1) { 1347 fname = path; 1348 goto found; 1349 } 1350 } else { 1351 fd = open(fname, O_RDONLY); 1352 if (fd != -1) 1353 goto found; 1354 } 1355 /* look in -I and system include directories. */ 1356 name = Dir_FindFile(fname, parseIncPath); 1357 if (!name) 1358 name = Dir_FindFile(fname, 1359 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1360 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1361 if (name) 1362 free(name); 1363 free(path); 1364 return(-1); 1365 } 1366 fname = name; 1367 /* 1368 * set the MAKEFILE variable desired by System V fans -- the 1369 * placement of the setting here means it gets set to the last 1370 * makefile specified, as it is set by SysV make. 1371 */ 1372 found: 1373 if (!doing_depend) 1374 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1375 Parse_File(fname, fd); 1376 } 1377 free(path); 1378 return(0); 1379 } 1380 1381 1382 1383 /*- 1384 * Cmd_Exec -- 1385 * Execute the command in cmd, and return the output of that command 1386 * in a string. 1387 * 1388 * Results: 1389 * A string containing the output of the command, or the empty string 1390 * If errnum is not NULL, it contains the reason for the command failure 1391 * 1392 * Side Effects: 1393 * The string must be freed by the caller. 1394 */ 1395 char * 1396 Cmd_Exec(const char *cmd, const char **errnum) 1397 { 1398 const char *args[4]; /* Args for invoking the shell */ 1399 int fds[2]; /* Pipe streams */ 1400 int cpid; /* Child PID */ 1401 int pid; /* PID from wait() */ 1402 char *res; /* result */ 1403 int status; /* command exit status */ 1404 Buffer buf; /* buffer to store the result */ 1405 char *cp; 1406 int cc; 1407 1408 1409 *errnum = NULL; 1410 1411 if (!shellName) 1412 Shell_Init(); 1413 /* 1414 * Set up arguments for shell 1415 */ 1416 args[0] = shellName; 1417 args[1] = "-c"; 1418 args[2] = cmd; 1419 args[3] = NULL; 1420 1421 /* 1422 * Open a pipe for fetching its output 1423 */ 1424 if (pipe(fds) == -1) { 1425 *errnum = "Couldn't create pipe for \"%s\""; 1426 goto bad; 1427 } 1428 1429 /* 1430 * Fork 1431 */ 1432 switch (cpid = vFork()) { 1433 case 0: 1434 /* 1435 * Close input side of pipe 1436 */ 1437 (void)close(fds[0]); 1438 1439 /* 1440 * Duplicate the output stream to the shell's output, then 1441 * shut the extra thing down. Note we don't fetch the error 1442 * stream...why not? Why? 1443 */ 1444 (void)dup2(fds[1], 1); 1445 (void)close(fds[1]); 1446 1447 Var_ExportVars(); 1448 1449 (void)execv(shellPath, UNCONST(args)); 1450 _exit(1); 1451 /*NOTREACHED*/ 1452 1453 case -1: 1454 *errnum = "Couldn't exec \"%s\""; 1455 goto bad; 1456 1457 default: 1458 /* 1459 * No need for the writing half 1460 */ 1461 (void)close(fds[1]); 1462 1463 Buf_Init(&buf, 0); 1464 1465 do { 1466 char result[BUFSIZ]; 1467 cc = read(fds[0], result, sizeof(result)); 1468 if (cc > 0) 1469 Buf_AddBytes(&buf, cc, result); 1470 } 1471 while (cc > 0 || (cc == -1 && errno == EINTR)); 1472 1473 /* 1474 * Close the input side of the pipe. 1475 */ 1476 (void)close(fds[0]); 1477 1478 /* 1479 * Wait for the process to exit. 1480 */ 1481 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1482 JobReapChild(pid, status, FALSE); 1483 continue; 1484 } 1485 cc = Buf_Size(&buf); 1486 res = Buf_Destroy(&buf, FALSE); 1487 1488 if (cc == 0) 1489 *errnum = "Couldn't read shell's output for \"%s\""; 1490 1491 if (WIFSIGNALED(status)) 1492 *errnum = "\"%s\" exited on a signal"; 1493 else if (WEXITSTATUS(status) != 0) 1494 *errnum = "\"%s\" returned non-zero status"; 1495 1496 /* 1497 * Null-terminate the result, convert newlines to spaces and 1498 * install it in the variable. 1499 */ 1500 res[cc] = '\0'; 1501 cp = &res[cc]; 1502 1503 if (cc > 0 && *--cp == '\n') { 1504 /* 1505 * A final newline is just stripped 1506 */ 1507 *cp-- = '\0'; 1508 } 1509 while (cp >= res) { 1510 if (*cp == '\n') { 1511 *cp = ' '; 1512 } 1513 cp--; 1514 } 1515 break; 1516 } 1517 return res; 1518 bad: 1519 res = bmake_malloc(1); 1520 *res = '\0'; 1521 return res; 1522 } 1523 1524 /*- 1525 * Error -- 1526 * Print an error message given its format. 1527 * 1528 * Results: 1529 * None. 1530 * 1531 * Side Effects: 1532 * The message is printed. 1533 */ 1534 /* VARARGS */ 1535 void 1536 Error(const char *fmt, ...) 1537 { 1538 va_list ap; 1539 FILE *err_file; 1540 1541 err_file = debug_file; 1542 if (err_file == stdout) 1543 err_file = stderr; 1544 (void)fflush(stdout); 1545 for (;;) { 1546 va_start(ap, fmt); 1547 fprintf(err_file, "%s: ", progname); 1548 (void)vfprintf(err_file, fmt, ap); 1549 va_end(ap); 1550 (void)fprintf(err_file, "\n"); 1551 (void)fflush(err_file); 1552 if (err_file == stderr) 1553 break; 1554 err_file = stderr; 1555 } 1556 } 1557 1558 /*- 1559 * Fatal -- 1560 * Produce a Fatal error message. If jobs are running, waits for them 1561 * to finish. 1562 * 1563 * Results: 1564 * None 1565 * 1566 * Side Effects: 1567 * The program exits 1568 */ 1569 /* VARARGS */ 1570 void 1571 Fatal(const char *fmt, ...) 1572 { 1573 va_list ap; 1574 1575 va_start(ap, fmt); 1576 if (jobsRunning) 1577 Job_Wait(); 1578 1579 (void)fflush(stdout); 1580 (void)vfprintf(stderr, fmt, ap); 1581 va_end(ap); 1582 (void)fprintf(stderr, "\n"); 1583 (void)fflush(stderr); 1584 1585 PrintOnError(NULL, NULL); 1586 1587 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1588 Targ_PrintGraph(2); 1589 Trace_Log(MAKEERROR, 0); 1590 exit(2); /* Not 1 so -q can distinguish error */ 1591 } 1592 1593 /* 1594 * Punt -- 1595 * Major exception once jobs are being created. Kills all jobs, prints 1596 * a message and exits. 1597 * 1598 * Results: 1599 * None 1600 * 1601 * Side Effects: 1602 * All children are killed indiscriminately and the program Lib_Exits 1603 */ 1604 /* VARARGS */ 1605 void 1606 Punt(const char *fmt, ...) 1607 { 1608 va_list ap; 1609 1610 va_start(ap, fmt); 1611 (void)fflush(stdout); 1612 (void)fprintf(stderr, "%s: ", progname); 1613 (void)vfprintf(stderr, fmt, ap); 1614 va_end(ap); 1615 (void)fprintf(stderr, "\n"); 1616 (void)fflush(stderr); 1617 1618 PrintOnError(NULL, NULL); 1619 1620 DieHorribly(); 1621 } 1622 1623 /*- 1624 * DieHorribly -- 1625 * Exit without giving a message. 1626 * 1627 * Results: 1628 * None 1629 * 1630 * Side Effects: 1631 * A big one... 1632 */ 1633 void 1634 DieHorribly(void) 1635 { 1636 if (jobsRunning) 1637 Job_AbortAll(); 1638 if (DEBUG(GRAPH2)) 1639 Targ_PrintGraph(2); 1640 Trace_Log(MAKEERROR, 0); 1641 exit(2); /* Not 1, so -q can distinguish error */ 1642 } 1643 1644 /* 1645 * Finish -- 1646 * Called when aborting due to errors in child shell to signal 1647 * abnormal exit. 1648 * 1649 * Results: 1650 * None 1651 * 1652 * Side Effects: 1653 * The program exits 1654 */ 1655 void 1656 Finish(int errors) 1657 /* number of errors encountered in Make_Make */ 1658 { 1659 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1660 } 1661 1662 /* 1663 * enunlink -- 1664 * Remove a file carefully, avoiding directories. 1665 */ 1666 int 1667 eunlink(const char *file) 1668 { 1669 struct stat st; 1670 1671 if (lstat(file, &st) == -1) 1672 return -1; 1673 1674 if (S_ISDIR(st.st_mode)) { 1675 errno = EISDIR; 1676 return -1; 1677 } 1678 return unlink(file); 1679 } 1680 1681 /* 1682 * execError -- 1683 * Print why exec failed, avoiding stdio. 1684 */ 1685 void 1686 execError(const char *af, const char *av) 1687 { 1688 #ifdef USE_IOVEC 1689 int i = 0; 1690 struct iovec iov[8]; 1691 #define IOADD(s) \ 1692 (void)(iov[i].iov_base = UNCONST(s), \ 1693 iov[i].iov_len = strlen(iov[i].iov_base), \ 1694 i++) 1695 #else 1696 #define IOADD(void)write(2, s, strlen(s)) 1697 #endif 1698 1699 IOADD(progname); 1700 IOADD(": "); 1701 IOADD(af); 1702 IOADD("("); 1703 IOADD(av); 1704 IOADD(") failed ("); 1705 IOADD(strerror(errno)); 1706 IOADD(")\n"); 1707 1708 #ifdef USE_IOVEC 1709 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1710 continue; 1711 #endif 1712 } 1713 1714 /* 1715 * usage -- 1716 * exit with usage message 1717 */ 1718 static void 1719 usage(void) 1720 { 1721 (void)fprintf(stderr, 1722 "usage: %s [-BeikNnqrstWX] \n\ 1723 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1724 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1725 [-V variable] [variable=value] [target ...]\n", progname); 1726 exit(2); 1727 } 1728 1729 1730 int 1731 PrintAddr(void *a, void *b) 1732 { 1733 printf("%lx ", (unsigned long) a); 1734 return b ? 0 : 0; 1735 } 1736 1737 1738 1739 void 1740 PrintOnError(GNode *gn, const char *s) 1741 { 1742 static GNode *en = NULL; 1743 char tmp[64]; 1744 char *cp; 1745 1746 if (s) 1747 printf("%s", s); 1748 1749 printf("\n%s: stopped in %s\n", progname, curdir); 1750 1751 if (en) 1752 return; /* we've been here! */ 1753 if (gn) { 1754 /* 1755 * We can print this even if there is no .ERROR target. 1756 */ 1757 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1758 } 1759 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1760 sizeof(tmp) - 1); 1761 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1762 if (cp) { 1763 if (*cp) 1764 printf("%s", cp); 1765 free(cp); 1766 } 1767 /* 1768 * Finally, see if there is a .ERROR target, and run it if so. 1769 */ 1770 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1771 if (en) { 1772 en->type |= OP_SPECIAL; 1773 Compat_Make(en, en); 1774 } 1775 } 1776 1777 void 1778 Main_ExportMAKEFLAGS(Boolean first) 1779 { 1780 static int once = 1; 1781 char tmp[64]; 1782 char *s; 1783 1784 if (once != first) 1785 return; 1786 once = 0; 1787 1788 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1789 sizeof(tmp)); 1790 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1791 if (s && *s) { 1792 #ifdef POSIX 1793 setenv("MAKEFLAGS", s, 1); 1794 #else 1795 setenv("MAKE", s, 1); 1796 #endif 1797 } 1798 } 1799 1800 char * 1801 getTmpdir(void) 1802 { 1803 static char *tmpdir = NULL; 1804 1805 if (!tmpdir) { 1806 struct stat st; 1807 1808 /* 1809 * Honor $TMPDIR but only if it is valid. 1810 * Ensure it ends with /. 1811 */ 1812 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1813 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1814 free(tmpdir); 1815 tmpdir = bmake_strdup(_PATH_TMP); 1816 } 1817 } 1818 return tmpdir; 1819 } 1820 1821 /* 1822 * Create and open a temp file using "pattern". 1823 * If "fnamep" is provided set it to a copy of the filename created. 1824 * Otherwise unlink the file once open. 1825 */ 1826 int 1827 mkTempFile(const char *pattern, char **fnamep) 1828 { 1829 static char *tmpdir = NULL; 1830 char tfile[MAXPATHLEN]; 1831 int fd; 1832 1833 if (!pattern) 1834 pattern = TMPPAT; 1835 if (!tmpdir) 1836 tmpdir = getTmpdir(); 1837 if (pattern[0] == '/') { 1838 snprintf(tfile, sizeof(tfile), "%s", pattern); 1839 } else { 1840 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1841 } 1842 if ((fd = mkstemp(tfile)) < 0) 1843 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1844 if (fnamep) { 1845 *fnamep = bmake_strdup(tfile); 1846 } else { 1847 unlink(tfile); /* we just want the descriptor */ 1848 } 1849 return fd; 1850 } 1851 1852 1853 /* 1854 * Return a Boolean based on setting of a knob. 1855 * 1856 * If the knob is not set, the supplied default is the return value. 1857 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1858 * is FALSE, otherwise TRUE. 1859 */ 1860 Boolean 1861 getBoolean(const char *name, Boolean bf) 1862 { 1863 char tmp[64]; 1864 char *cp; 1865 1866 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1867 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1868 1869 if (cp) { 1870 switch(*cp) { 1871 case '\0': /* not set - the default wins */ 1872 break; 1873 case '0': 1874 case 'f': 1875 case 'n': 1876 bf = FALSE; 1877 break; 1878 case 'o': 1879 switch (cp[1]) { 1880 case 'f': 1881 bf = FALSE; 1882 break; 1883 default: 1884 bf = TRUE; 1885 break; 1886 } 1887 break; 1888 default: 1889 bf = TRUE; 1890 break; 1891 } 1892 free(cp); 1893 } 1894 } 1895 return (bf); 1896 } 1897
Indexes created Tue Oct 21 08:09:48 GMT 2025