main.c revision 1.204
1 /* $NetBSD: main.c,v 1.204 2013/01/25 02:01:10 sjg 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 1.204 2013/01/25 02:01:10 sjg 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 1.204 2013/01/25 02:01:10 sjg Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and two optional 103 * arguments for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and two arguments. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and two arguments. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/signal.h> 121 #include <sys/stat.h> 122 #ifdef MAKE_NATIVE 123 #include <sys/utsname.h> 124 #endif 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <fcntl.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 134 #include "make.h" 135 #include "hash.h" 136 #include "dir.h" 137 #include "job.h" 138 #include "pathnames.h" 139 #include "trace.h" 140 141 #ifdef USE_IOVEC 142 #include <sys/uio.h> 143 #endif 144 145 #ifndef DEFMAXLOCAL 146 #define DEFMAXLOCAL DEFMAXJOBS 147 #endif /* DEFMAXLOCAL */ 148 149 Lst create; /* Targets to be made */ 150 time_t now; /* Time at start of make */ 151 GNode *DEFAULT; /* .DEFAULT node */ 152 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 153 154 static Boolean noBuiltins; /* -r flag */ 155 static Lst makefiles; /* ordered list of makefiles to read */ 156 static Boolean printVars; /* print value of one or more vars */ 157 static Lst variables; /* list of variables to print */ 158 int maxJobs; /* -j argument */ 159 static int maxJobTokens; /* -j argument */ 160 Boolean compatMake; /* -B argument */ 161 int debug; /* -d argument */ 162 Boolean debugVflag; /* -dV */ 163 Boolean noExecute; /* -n flag */ 164 Boolean noRecursiveExecute; /* -N flag */ 165 Boolean keepgoing; /* -k flag */ 166 Boolean queryFlag; /* -q flag */ 167 Boolean touchFlag; /* -t flag */ 168 Boolean ignoreErrors; /* -i flag */ 169 Boolean beSilent; /* -s flag */ 170 Boolean oldVars; /* variable substitution style */ 171 Boolean checkEnvFirst; /* -e flag */ 172 Boolean parseWarnFatal; /* -W flag */ 173 Boolean jobServer; /* -J flag */ 174 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 175 Boolean varNoExportEnv; /* -X flag */ 176 Boolean doing_depend; /* Set while reading .depend */ 177 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 178 static const char * tracefile; 179 static void MainParseArgs(int, char **); 180 static int ReadMakefile(const void *, const void *); 181 static void usage(void) MAKE_ATTR_DEAD; 182 183 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 184 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 185 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 186 char *progname; /* the program name */ 187 char *makeDependfile; 188 pid_t myPid; 189 190 Boolean forceJobs = FALSE; 191 192 extern Lst parseIncPath; 193 194 static void 195 parse_debug_options(const char *argvalue) 196 { 197 const char *modules; 198 const char *mode; 199 char *fname; 200 int len; 201 202 for (modules = argvalue; *modules; ++modules) { 203 switch (*modules) { 204 case 'A': 205 debug = ~0; 206 break; 207 case 'a': 208 debug |= DEBUG_ARCH; 209 break; 210 case 'C': 211 debug |= DEBUG_CWD; 212 break; 213 case 'c': 214 debug |= DEBUG_COND; 215 break; 216 case 'd': 217 debug |= DEBUG_DIR; 218 break; 219 case 'e': 220 debug |= DEBUG_ERROR; 221 break; 222 case 'f': 223 debug |= DEBUG_FOR; 224 break; 225 case 'g': 226 if (modules[1] == '1') { 227 debug |= DEBUG_GRAPH1; 228 ++modules; 229 } 230 else if (modules[1] == '2') { 231 debug |= DEBUG_GRAPH2; 232 ++modules; 233 } 234 else if (modules[1] == '3') { 235 debug |= DEBUG_GRAPH3; 236 ++modules; 237 } 238 break; 239 case 'j': 240 debug |= DEBUG_JOB; 241 break; 242 case 'l': 243 debug |= DEBUG_LOUD; 244 break; 245 case 'M': 246 debug |= DEBUG_META; 247 break; 248 case 'm': 249 debug |= DEBUG_MAKE; 250 break; 251 case 'n': 252 debug |= DEBUG_SCRIPT; 253 break; 254 case 'p': 255 debug |= DEBUG_PARSE; 256 break; 257 case 's': 258 debug |= DEBUG_SUFF; 259 break; 260 case 't': 261 debug |= DEBUG_TARG; 262 break; 263 case 'V': 264 debugVflag = TRUE; 265 break; 266 case 'v': 267 debug |= DEBUG_VAR; 268 break; 269 case 'x': 270 debug |= DEBUG_SHELL; 271 break; 272 case 'F': 273 if (debug_file != stdout && debug_file != stderr) 274 fclose(debug_file); 275 if (*++modules == '+') { 276 modules++; 277 mode = "a"; 278 } else 279 mode = "w"; 280 if (strcmp(modules, "stdout") == 0) { 281 debug_file = stdout; 282 goto debug_setbuf; 283 } 284 if (strcmp(modules, "stderr") == 0) { 285 debug_file = stderr; 286 goto debug_setbuf; 287 } 288 len = strlen(modules); 289 fname = malloc(len + 20); 290 memcpy(fname, modules, len + 1); 291 /* Let the filename be modified by the pid */ 292 if (strcmp(fname + len - 3, ".%d") == 0) 293 snprintf(fname + len - 2, 20, "%d", getpid()); 294 debug_file = fopen(fname, mode); 295 if (!debug_file) { 296 fprintf(stderr, "Cannot open debug file %s\n", 297 fname); 298 usage(); 299 } 300 free(fname); 301 goto debug_setbuf; 302 default: 303 (void)fprintf(stderr, 304 "%s: illegal argument to d option -- %c\n", 305 progname, *modules); 306 usage(); 307 } 308 } 309 debug_setbuf: 310 /* 311 * Make the debug_file unbuffered, and make 312 * stdout line buffered (unless debugfile == stdout). 313 */ 314 setvbuf(debug_file, NULL, _IONBF, 0); 315 if (debug_file != stdout) { 316 setvbuf(stdout, NULL, _IOLBF, 0); 317 } 318 } 319 320 /*- 321 * MainParseArgs -- 322 * Parse a given argument vector. Called from main() and from 323 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 324 * 325 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 326 * 327 * Results: 328 * None 329 * 330 * Side Effects: 331 * Various global and local flags will be set depending on the flags 332 * given 333 */ 334 static void 335 MainParseArgs(int argc, char **argv) 336 { 337 char *p; 338 int c = '?'; 339 int arginc; 340 char *argvalue; 341 const char *getopt_def; 342 char *optscan; 343 Boolean inOption, dashDash = FALSE; 344 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 345 346 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst" 347 /* Can't actually use getopt(3) because rescanning is not portable */ 348 349 getopt_def = OPTFLAGS; 350 rearg: 351 inOption = FALSE; 352 optscan = NULL; 353 while(argc > 1) { 354 char *getopt_spec; 355 if(!inOption) 356 optscan = argv[1]; 357 c = *optscan++; 358 arginc = 0; 359 if(inOption) { 360 if(c == '\0') { 361 ++argv; 362 --argc; 363 inOption = FALSE; 364 continue; 365 } 366 } else { 367 if (c != '-' || dashDash) 368 break; 369 inOption = TRUE; 370 c = *optscan++; 371 } 372 /* '-' found at some earlier point */ 373 getopt_spec = strchr(getopt_def, c); 374 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 375 /* -<something> found, and <something> should have an arg */ 376 inOption = FALSE; 377 arginc = 1; 378 argvalue = optscan; 379 if(*argvalue == '\0') { 380 if (argc < 3) 381 goto noarg; 382 argvalue = argv[2]; 383 arginc = 2; 384 } 385 } else { 386 argvalue = NULL; 387 } 388 switch(c) { 389 case '\0': 390 arginc = 1; 391 inOption = FALSE; 392 break; 393 case 'B': 394 compatMake = TRUE; 395 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 396 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 397 break; 398 case 'C': 399 if (chdir(argvalue) == -1) { 400 (void)fprintf(stderr, 401 "%s: chdir %s: %s\n", 402 progname, argvalue, 403 strerror(errno)); 404 exit(1); 405 } 406 if (getcwd(curdir, MAXPATHLEN) == NULL) { 407 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 408 exit(2); 409 } 410 ignorePWD = TRUE; 411 break; 412 case 'D': 413 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 414 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 415 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 416 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 417 break; 418 case 'I': 419 if (argvalue == NULL) goto noarg; 420 Parse_AddIncludeDir(argvalue); 421 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 422 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 423 break; 424 case 'J': 425 if (argvalue == NULL) goto noarg; 426 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 427 (void)fprintf(stderr, 428 "%s: internal error -- J option malformed (%s)\n", 429 progname, argvalue); 430 usage(); 431 } 432 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 433 (fcntl(jp_1, F_GETFD, 0) < 0)) { 434 #if 0 435 (void)fprintf(stderr, 436 "%s: ###### warning -- J descriptors were closed!\n", 437 progname); 438 exit(2); 439 #endif 440 jp_0 = -1; 441 jp_1 = -1; 442 compatMake = TRUE; 443 } else { 444 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 445 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 446 jobServer = TRUE; 447 } 448 break; 449 case 'N': 450 noExecute = TRUE; 451 noRecursiveExecute = TRUE; 452 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 453 break; 454 case 'S': 455 keepgoing = FALSE; 456 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 457 break; 458 case 'T': 459 if (argvalue == NULL) goto noarg; 460 tracefile = bmake_strdup(argvalue); 461 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 462 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 463 break; 464 case 'V': 465 if (argvalue == NULL) goto noarg; 466 printVars = TRUE; 467 (void)Lst_AtEnd(variables, argvalue); 468 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 469 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 470 break; 471 case 'W': 472 parseWarnFatal = TRUE; 473 break; 474 case 'X': 475 varNoExportEnv = TRUE; 476 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 477 break; 478 case 'd': 479 if (argvalue == NULL) goto noarg; 480 /* If '-d-opts' don't pass to children */ 481 if (argvalue[0] == '-') 482 argvalue++; 483 else { 484 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 485 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 486 } 487 parse_debug_options(argvalue); 488 break; 489 case 'e': 490 checkEnvFirst = TRUE; 491 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 492 break; 493 case 'f': 494 if (argvalue == NULL) goto noarg; 495 (void)Lst_AtEnd(makefiles, argvalue); 496 break; 497 case 'i': 498 ignoreErrors = TRUE; 499 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 500 break; 501 case 'j': 502 if (argvalue == NULL) goto noarg; 503 forceJobs = TRUE; 504 maxJobs = strtol(argvalue, &p, 0); 505 if (*p != '\0' || maxJobs < 1) { 506 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 507 progname); 508 exit(1); 509 } 510 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 511 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 512 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 513 maxJobTokens = maxJobs; 514 break; 515 case 'k': 516 keepgoing = TRUE; 517 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 518 break; 519 case 'm': 520 if (argvalue == NULL) goto noarg; 521 /* look for magic parent directory search string */ 522 if (strncmp(".../", argvalue, 4) == 0) { 523 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 524 found_path, sizeof(found_path))) 525 break; /* nothing doing */ 526 (void)Dir_AddDir(sysIncPath, found_path); 527 } else { 528 (void)Dir_AddDir(sysIncPath, argvalue); 529 } 530 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 531 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 532 break; 533 case 'n': 534 noExecute = TRUE; 535 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 536 break; 537 case 'q': 538 queryFlag = TRUE; 539 /* Kind of nonsensical, wot? */ 540 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 541 break; 542 case 'r': 543 noBuiltins = TRUE; 544 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 545 break; 546 case 's': 547 beSilent = TRUE; 548 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 549 break; 550 case 't': 551 touchFlag = TRUE; 552 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 553 break; 554 case '-': 555 dashDash = TRUE; 556 break; 557 default: 558 case '?': 559 usage(); 560 } 561 argv += arginc; 562 argc -= arginc; 563 } 564 565 oldVars = TRUE; 566 567 /* 568 * See if the rest of the arguments are variable assignments and 569 * perform them if so. Else take them to be targets and stuff them 570 * on the end of the "create" list. 571 */ 572 for (; argc > 1; ++argv, --argc) 573 if (Parse_IsVar(argv[1])) { 574 Parse_DoVar(argv[1], VAR_CMD); 575 } else { 576 if (!*argv[1]) 577 Punt("illegal (null) argument."); 578 if (*argv[1] == '-' && !dashDash) 579 goto rearg; 580 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 581 } 582 583 return; 584 noarg: 585 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 586 progname, c); 587 usage(); 588 } 589 590 /*- 591 * Main_ParseArgLine -- 592 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 593 * is encountered and by main() when reading the .MAKEFLAGS envariable. 594 * Takes a line of arguments and breaks it into its 595 * component words and passes those words and the number of them to the 596 * MainParseArgs function. 597 * The line should have all its leading whitespace removed. 598 * 599 * Input: 600 * line Line to fracture 601 * 602 * Results: 603 * None 604 * 605 * Side Effects: 606 * Only those that come from the various arguments. 607 */ 608 void 609 Main_ParseArgLine(const char *line) 610 { 611 char **argv; /* Manufactured argument vector */ 612 int argc; /* Number of arguments in argv */ 613 char *args; /* Space used by the args */ 614 char *buf, *p1; 615 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 616 size_t len; 617 618 if (line == NULL) 619 return; 620 for (; *line == ' '; ++line) 621 continue; 622 if (!*line) 623 return; 624 625 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 626 (void)snprintf(buf, len, "%s %s", argv0, line); 627 if (p1) 628 free(p1); 629 630 argv = brk_string(buf, &argc, TRUE, &args); 631 if (argv == NULL) { 632 Error("Unterminated quoted string [%s]", buf); 633 free(buf); 634 return; 635 } 636 free(buf); 637 MainParseArgs(argc, argv); 638 639 free(args); 640 free(argv); 641 } 642 643 Boolean 644 Main_SetObjdir(const char *path) 645 { 646 struct stat sb; 647 char *p = NULL; 648 char buf[MAXPATHLEN + 1]; 649 Boolean rc = FALSE; 650 651 /* expand variable substitutions */ 652 if (strchr(path, '$') != 0) { 653 snprintf(buf, MAXPATHLEN, "%s", path); 654 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 655 } 656 657 if (path[0] != '/') { 658 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 659 path = buf; 660 } 661 662 /* look for the directory and try to chdir there */ 663 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 664 if (chdir(path)) { 665 (void)fprintf(stderr, "make warning: %s: %s.\n", 666 path, strerror(errno)); 667 } else { 668 strncpy(objdir, path, MAXPATHLEN); 669 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 670 setenv("PWD", objdir, 1); 671 Dir_InitDot(); 672 rc = TRUE; 673 } 674 } 675 676 if (p) 677 free(p); 678 return rc; 679 } 680 681 /*- 682 * ReadAllMakefiles -- 683 * wrapper around ReadMakefile() to read all. 684 * 685 * Results: 686 * TRUE if ok, FALSE on error 687 */ 688 static int 689 ReadAllMakefiles(const void *p, const void *q) 690 { 691 return (ReadMakefile(p, q) == 0); 692 } 693 694 int 695 str2Lst_Append(Lst lp, char *str, const char *sep) 696 { 697 char *cp; 698 int n; 699 700 if (!sep) 701 sep = " \t"; 702 703 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 704 (void)Lst_AtEnd(lp, cp); 705 n++; 706 } 707 return (n); 708 } 709 710 #ifdef SIGINFO 711 /*ARGSUSED*/ 712 static void 713 siginfo(int signo MAKE_ATTR_UNUSED) 714 { 715 char dir[MAXPATHLEN]; 716 char str[2 * MAXPATHLEN]; 717 int len; 718 if (getcwd(dir, sizeof(dir)) == NULL) 719 return; 720 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 721 if (len > 0) 722 (void)write(STDERR_FILENO, str, (size_t)len); 723 } 724 #endif 725 726 /* 727 * Allow makefiles some control over the mode we run in. 728 */ 729 void 730 MakeMode(const char *mode) 731 { 732 char *mp = NULL; 733 734 if (!mode) 735 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 736 737 if (mode && *mode) { 738 if (strstr(mode, "compat")) { 739 compatMake = TRUE; 740 forceJobs = FALSE; 741 } 742 #if USE_META 743 if (strstr(mode, "meta")) 744 meta_init(mode); 745 #endif 746 } 747 if (mp) 748 free(mp); 749 } 750 751 /*- 752 * main -- 753 * The main function, for obvious reasons. Initializes variables 754 * and a few modules, then parses the arguments give it in the 755 * environment and on the command line. Reads the system makefile 756 * followed by either Makefile, makefile or the file given by the 757 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 758 * flags it has received by then uses either the Make or the Compat 759 * module to create the initial list of targets. 760 * 761 * Results: 762 * If -q was given, exits -1 if anything was out-of-date. Else it exits 763 * 0. 764 * 765 * Side Effects: 766 * The program exits when done. Targets are created. etc. etc. etc. 767 */ 768 int 769 main(int argc, char **argv) 770 { 771 Lst targs; /* target nodes to create -- passed to Make_Init */ 772 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 773 struct stat sb, sa; 774 char *p1, *path, *pwd; 775 char mdpath[MAXPATHLEN]; 776 const char *machine = getenv("MACHINE"); 777 const char *machine_arch = getenv("MACHINE_ARCH"); 778 char *syspath = getenv("MAKESYSPATH"); 779 Lst sysMkPath; /* Path of sys.mk */ 780 char *cp = NULL, *start; 781 /* avoid faults on read-only strings */ 782 static char defsyspath[] = _PATH_DEFSYSPATH; 783 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 784 struct timeval rightnow; /* to initialize random seed */ 785 #ifdef MAKE_NATIVE 786 struct utsname utsname; 787 #endif 788 789 /* default to writing debug to stderr */ 790 debug_file = stderr; 791 792 #ifdef SIGINFO 793 (void)bmake_signal(SIGINFO, siginfo); 794 #endif 795 /* 796 * Set the seed to produce a different random sequence 797 * on each program execution. 798 */ 799 gettimeofday(&rightnow, NULL); 800 srandom(rightnow.tv_sec + rightnow.tv_usec); 801 802 if ((progname = strrchr(argv[0], '/')) != NULL) 803 progname++; 804 else 805 progname = argv[0]; 806 #ifdef RLIMIT_NOFILE 807 /* 808 * get rid of resource limit on file descriptors 809 */ 810 { 811 struct rlimit rl; 812 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 813 rl.rlim_cur != rl.rlim_max) { 814 rl.rlim_cur = rl.rlim_max; 815 (void)setrlimit(RLIMIT_NOFILE, &rl); 816 } 817 } 818 #endif 819 820 /* 821 * Get the name of this type of MACHINE from utsname 822 * so we can share an executable for similar machines. 823 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 824 * 825 * Note that both MACHINE and MACHINE_ARCH are decided at 826 * run-time. 827 */ 828 if (!machine) { 829 #ifdef MAKE_NATIVE 830 if (uname(&utsname) == -1) { 831 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 832 strerror(errno)); 833 exit(2); 834 } 835 machine = utsname.machine; 836 #else 837 #ifdef MAKE_MACHINE 838 machine = MAKE_MACHINE; 839 #else 840 machine = "unknown"; 841 #endif 842 #endif 843 } 844 845 if (!machine_arch) { 846 #ifndef MACHINE_ARCH 847 #ifdef MAKE_MACHINE_ARCH 848 machine_arch = MAKE_MACHINE_ARCH; 849 #else 850 machine_arch = "unknown"; 851 #endif 852 #else 853 machine_arch = MACHINE_ARCH; 854 #endif 855 } 856 857 myPid = getpid(); /* remember this for vFork() */ 858 859 /* 860 * Just in case MAKEOBJDIR wants us to do something tricky. 861 */ 862 Var_Init(); /* Initialize the lists of variables for 863 * parsing arguments */ 864 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 865 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 866 #ifdef MAKE_VERSION 867 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 868 #endif 869 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 870 /* 871 * This is the traditional preference for makefiles. 872 */ 873 #ifndef MAKEFILE_PREFERENCE_LIST 874 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 875 #endif 876 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 877 VAR_GLOBAL, 0); 878 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 879 880 create = Lst_Init(FALSE); 881 makefiles = Lst_Init(FALSE); 882 printVars = FALSE; 883 debugVflag = FALSE; 884 variables = Lst_Init(FALSE); 885 beSilent = FALSE; /* Print commands as executed */ 886 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 887 noExecute = FALSE; /* Execute all commands */ 888 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 889 keepgoing = FALSE; /* Stop on error */ 890 allPrecious = FALSE; /* Remove targets when interrupted */ 891 queryFlag = FALSE; /* This is not just a check-run */ 892 noBuiltins = FALSE; /* Read the built-in rules */ 893 touchFlag = FALSE; /* Actually update targets */ 894 debug = 0; /* No debug verbosity, please. */ 895 jobsRunning = FALSE; 896 897 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 898 maxJobTokens = maxJobs; 899 compatMake = FALSE; /* No compat mode */ 900 ignorePWD = FALSE; 901 902 /* 903 * Initialize the parsing, directory and variable modules to prepare 904 * for the reading of inclusion paths and variable settings on the 905 * command line 906 */ 907 908 /* 909 * Initialize various variables. 910 * MAKE also gets this name, for compatibility 911 * .MAKEFLAGS gets set to the empty string just in case. 912 * MFLAGS also gets initialized empty, for compatibility. 913 */ 914 Parse_Init(); 915 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 916 /* 917 * Leave alone if it is an absolute path, or if it does 918 * not contain a '/' in which case we need to find it in 919 * the path, like execvp(3) and the shells do. 920 */ 921 p1 = argv[0]; 922 } else { 923 /* 924 * A relative path, canonicalize it. 925 */ 926 p1 = realpath(argv[0], mdpath); 927 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 928 p1 = argv[0]; /* realpath failed */ 929 } 930 } 931 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 932 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 933 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 934 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 935 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 936 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 937 938 /* 939 * Set some other useful macros 940 */ 941 { 942 char tmp[64]; 943 const char *ep; 944 945 if (!(ep = getenv(MAKE_LEVEL))) { 946 ep = "0"; 947 } 948 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0); 949 snprintf(tmp, sizeof(tmp), "%u", myPid); 950 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 951 snprintf(tmp, sizeof(tmp), "%u", getppid()); 952 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 953 } 954 Job_SetPrefix(); 955 956 /* 957 * First snag any flags out of the MAKE environment variable. 958 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 959 * in a different format). 960 */ 961 #ifdef POSIX 962 Main_ParseArgLine(getenv("MAKEFLAGS")); 963 #else 964 Main_ParseArgLine(getenv("MAKE")); 965 #endif 966 967 /* 968 * Find where we are (now). 969 * We take care of PWD for the automounter below... 970 */ 971 if (getcwd(curdir, MAXPATHLEN) == NULL) { 972 (void)fprintf(stderr, "%s: getcwd: %s.\n", 973 progname, strerror(errno)); 974 exit(2); 975 } 976 977 MainParseArgs(argc, argv); 978 979 /* 980 * Verify that cwd is sane. 981 */ 982 if (stat(curdir, &sa) == -1) { 983 (void)fprintf(stderr, "%s: %s: %s.\n", 984 progname, curdir, strerror(errno)); 985 exit(2); 986 } 987 988 /* 989 * All this code is so that we know where we are when we start up 990 * on a different machine with pmake. 991 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 992 * since the value of curdir can vary depending on how we got 993 * here. Ie sitting at a shell prompt (shell that provides $PWD) 994 * or via subdir.mk in which case its likely a shell which does 995 * not provide it. 996 * So, to stop it breaking this case only, we ignore PWD if 997 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 998 */ 999 if (!ignorePWD && 1000 (pwd = getenv("PWD")) != NULL && 1001 getenv("MAKEOBJDIRPREFIX") == NULL) { 1002 const char *makeobjdir = getenv("MAKEOBJDIR"); 1003 1004 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1005 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 1006 sa.st_dev == sb.st_dev) 1007 (void)strncpy(curdir, pwd, MAXPATHLEN); 1008 } 1009 } 1010 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1011 1012 /* 1013 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1014 * MAKEOBJDIR is set in the environment, try only that value 1015 * and fall back to .CURDIR if it does not exist. 1016 * 1017 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1018 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1019 * of these paths exist, just use .CURDIR. 1020 */ 1021 Dir_Init(curdir); 1022 (void)Main_SetObjdir(curdir); 1023 1024 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1025 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1026 (void)Main_SetObjdir(mdpath); 1027 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1028 (void)Main_SetObjdir(path); 1029 } else { 1030 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1031 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1032 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1033 _PATH_OBJDIRPREFIX, curdir); 1034 (void)Main_SetObjdir(mdpath); 1035 } 1036 } 1037 1038 /* 1039 * Be compatible if user did not specify -j and did not explicitly 1040 * turned compatibility on 1041 */ 1042 if (!compatMake && !forceJobs) { 1043 compatMake = TRUE; 1044 } 1045 1046 /* 1047 * Initialize archive, target and suffix modules in preparation for 1048 * parsing the makefile(s) 1049 */ 1050 Arch_Init(); 1051 Targ_Init(); 1052 Suff_Init(); 1053 Trace_Init(tracefile); 1054 1055 DEFAULT = NULL; 1056 (void)time(&now); 1057 1058 Trace_Log(MAKESTART, NULL); 1059 1060 /* 1061 * Set up the .TARGETS variable to contain the list of targets to be 1062 * created. If none specified, make the variable empty -- the parser 1063 * will fill the thing in with the default or .MAIN target. 1064 */ 1065 if (!Lst_IsEmpty(create)) { 1066 LstNode ln; 1067 1068 for (ln = Lst_First(create); ln != NULL; 1069 ln = Lst_Succ(ln)) { 1070 char *name = (char *)Lst_Datum(ln); 1071 1072 Var_Append(".TARGETS", name, VAR_GLOBAL); 1073 } 1074 } else 1075 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1076 1077 1078 /* 1079 * If no user-supplied system path was given (through the -m option) 1080 * add the directories from the DEFSYSPATH (more than one may be given 1081 * as dir1:...:dirn) to the system include path. 1082 */ 1083 if (syspath == NULL || *syspath == '\0') 1084 syspath = defsyspath; 1085 else 1086 syspath = bmake_strdup(syspath); 1087 1088 for (start = syspath; *start != '\0'; start = cp) { 1089 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1090 continue; 1091 if (*cp == ':') { 1092 *cp++ = '\0'; 1093 } 1094 /* look for magic parent directory search string */ 1095 if (strncmp(".../", start, 4) != 0) { 1096 (void)Dir_AddDir(defIncPath, start); 1097 } else { 1098 if (Dir_FindHereOrAbove(curdir, start+4, 1099 found_path, sizeof(found_path))) { 1100 (void)Dir_AddDir(defIncPath, found_path); 1101 } 1102 } 1103 } 1104 if (syspath != defsyspath) 1105 free(syspath); 1106 1107 /* 1108 * Read in the built-in rules first, followed by the specified 1109 * makefile, if it was (makefile != NULL), or the default 1110 * makefile and Makefile, in that order, if it wasn't. 1111 */ 1112 if (!noBuiltins) { 1113 LstNode ln; 1114 1115 sysMkPath = Lst_Init(FALSE); 1116 Dir_Expand(_PATH_DEFSYSMK, 1117 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1118 sysMkPath); 1119 if (Lst_IsEmpty(sysMkPath)) 1120 Fatal("%s: no system rules (%s).", progname, 1121 _PATH_DEFSYSMK); 1122 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1123 if (ln == NULL) 1124 Fatal("%s: cannot open %s.", progname, 1125 (char *)Lst_Datum(ln)); 1126 } 1127 1128 if (!Lst_IsEmpty(makefiles)) { 1129 LstNode ln; 1130 1131 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1132 if (ln != NULL) 1133 Fatal("%s: cannot open %s.", progname, 1134 (char *)Lst_Datum(ln)); 1135 } else { 1136 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1137 VAR_CMD, 0); 1138 if (p1) { 1139 (void)str2Lst_Append(makefiles, p1, NULL); 1140 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1141 free(p1); 1142 } 1143 } 1144 1145 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1146 if (!noBuiltins || !printVars) { 1147 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1148 VAR_CMD, 0); 1149 doing_depend = TRUE; 1150 (void)ReadMakefile(makeDependfile, NULL); 1151 doing_depend = FALSE; 1152 } 1153 1154 MakeMode(NULL); 1155 1156 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1157 if (p1) 1158 free(p1); 1159 1160 if (!compatMake) 1161 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1162 if (DEBUG(JOB)) 1163 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1164 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1165 1166 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1167 1168 1169 /* 1170 * For compatibility, look at the directories in the VPATH variable 1171 * and add them to the search path, if the variable is defined. The 1172 * variable's value is in the same format as the PATH envariable, i.e. 1173 * <directory>:<directory>:<directory>... 1174 */ 1175 if (Var_Exists("VPATH", VAR_CMD)) { 1176 char *vpath, savec; 1177 /* 1178 * GCC stores string constants in read-only memory, but 1179 * Var_Subst will want to write this thing, so store it 1180 * in an array 1181 */ 1182 static char VPATH[] = "${VPATH}"; 1183 1184 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1185 path = vpath; 1186 do { 1187 /* skip to end of directory */ 1188 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1189 continue; 1190 /* Save terminator character so know when to stop */ 1191 savec = *cp; 1192 *cp = '\0'; 1193 /* Add directory to search path */ 1194 (void)Dir_AddDir(dirSearchPath, path); 1195 *cp = savec; 1196 path = cp + 1; 1197 } while (savec == ':'); 1198 free(vpath); 1199 } 1200 1201 /* 1202 * Now that all search paths have been read for suffixes et al, it's 1203 * time to add the default search path to their lists... 1204 */ 1205 Suff_DoPaths(); 1206 1207 /* 1208 * Propagate attributes through :: dependency lists. 1209 */ 1210 Targ_Propagate(); 1211 1212 /* print the initial graph, if the user requested it */ 1213 if (DEBUG(GRAPH1)) 1214 Targ_PrintGraph(1); 1215 1216 /* print the values of any variables requested by the user */ 1217 if (printVars) { 1218 LstNode ln; 1219 Boolean expandVars; 1220 1221 if (debugVflag) 1222 expandVars = FALSE; 1223 else 1224 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1225 for (ln = Lst_First(variables); ln != NULL; 1226 ln = Lst_Succ(ln)) { 1227 char *var = (char *)Lst_Datum(ln); 1228 char *value; 1229 1230 if (strchr(var, '$')) { 1231 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1232 } else if (expandVars) { 1233 char tmp[128]; 1234 1235 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1236 Fatal("%s: variable name too big: %s", 1237 progname, var); 1238 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1239 } else { 1240 value = Var_Value(var, VAR_GLOBAL, &p1); 1241 } 1242 printf("%s\n", value ? value : ""); 1243 if (p1) 1244 free(p1); 1245 } 1246 } else { 1247 /* 1248 * Have now read the entire graph and need to make a list of 1249 * targets to create. If none was given on the command line, 1250 * we consult the parsing module to find the main target(s) 1251 * to create. 1252 */ 1253 if (Lst_IsEmpty(create)) 1254 targs = Parse_MainName(); 1255 else 1256 targs = Targ_FindList(create, TARG_CREATE); 1257 1258 if (!compatMake) { 1259 /* 1260 * Initialize job module before traversing the graph 1261 * now that any .BEGIN and .END targets have been read. 1262 * This is done only if the -q flag wasn't given 1263 * (to prevent the .BEGIN from being executed should 1264 * it exist). 1265 */ 1266 if (!queryFlag) { 1267 Job_Init(); 1268 jobsRunning = TRUE; 1269 } 1270 1271 /* Traverse the graph, checking on all the targets */ 1272 outOfDate = Make_Run(targs); 1273 } else { 1274 /* 1275 * Compat_Init will take care of creating all the 1276 * targets as well as initializing the module. 1277 */ 1278 Compat_Run(targs); 1279 } 1280 } 1281 1282 #ifdef CLEANUP 1283 Lst_Destroy(targs, NULL); 1284 Lst_Destroy(variables, NULL); 1285 Lst_Destroy(makefiles, NULL); 1286 Lst_Destroy(create, (FreeProc *)free); 1287 #endif 1288 1289 /* print the graph now it's been processed if the user requested it */ 1290 if (DEBUG(GRAPH2)) 1291 Targ_PrintGraph(2); 1292 1293 Trace_Log(MAKEEND, 0); 1294 1295 Suff_End(); 1296 Targ_End(); 1297 Arch_End(); 1298 Var_End(); 1299 Parse_End(); 1300 Dir_End(); 1301 Job_End(); 1302 Trace_End(); 1303 1304 return outOfDate ? 1 : 0; 1305 } 1306 1307 /*- 1308 * ReadMakefile -- 1309 * Open and parse the given makefile. 1310 * 1311 * Results: 1312 * 0 if ok. -1 if couldn't open file. 1313 * 1314 * Side Effects: 1315 * lots 1316 */ 1317 static int 1318 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1319 { 1320 const char *fname = p; /* makefile to read */ 1321 int fd; 1322 size_t len = MAXPATHLEN; 1323 char *name, *path = bmake_malloc(len); 1324 1325 if (!strcmp(fname, "-")) { 1326 Parse_File(NULL /*stdin*/, -1); 1327 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1328 } else { 1329 /* if we've chdir'd, rebuild the path name */ 1330 if (strcmp(curdir, objdir) && *fname != '/') { 1331 size_t plen = strlen(curdir) + strlen(fname) + 2; 1332 if (len < plen) 1333 path = bmake_realloc(path, len = 2 * plen); 1334 1335 (void)snprintf(path, len, "%s/%s", curdir, fname); 1336 fd = open(path, O_RDONLY); 1337 if (fd != -1) { 1338 fname = path; 1339 goto found; 1340 } 1341 1342 /* If curdir failed, try objdir (ala .depend) */ 1343 plen = strlen(objdir) + strlen(fname) + 2; 1344 if (len < plen) 1345 path = bmake_realloc(path, len = 2 * plen); 1346 (void)snprintf(path, len, "%s/%s", objdir, fname); 1347 fd = open(path, O_RDONLY); 1348 if (fd != -1) { 1349 fname = path; 1350 goto found; 1351 } 1352 } else { 1353 fd = open(fname, O_RDONLY); 1354 if (fd != -1) 1355 goto found; 1356 } 1357 /* look in -I and system include directories. */ 1358 name = Dir_FindFile(fname, parseIncPath); 1359 if (!name) 1360 name = Dir_FindFile(fname, 1361 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1362 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1363 if (name) 1364 free(name); 1365 free(path); 1366 return(-1); 1367 } 1368 fname = name; 1369 /* 1370 * set the MAKEFILE variable desired by System V fans -- the 1371 * placement of the setting here means it gets set to the last 1372 * makefile specified, as it is set by SysV make. 1373 */ 1374 found: 1375 if (!doing_depend) 1376 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1377 Parse_File(fname, fd); 1378 } 1379 free(path); 1380 return(0); 1381 } 1382 1383 1384 1385 /*- 1386 * Cmd_Exec -- 1387 * Execute the command in cmd, and return the output of that command 1388 * in a string. 1389 * 1390 * Results: 1391 * A string containing the output of the command, or the empty string 1392 * If errnum is not NULL, it contains the reason for the command failure 1393 * 1394 * Side Effects: 1395 * The string must be freed by the caller. 1396 */ 1397 char * 1398 Cmd_Exec(const char *cmd, const char **errnum) 1399 { 1400 const char *args[4]; /* Args for invoking the shell */ 1401 int fds[2]; /* Pipe streams */ 1402 int cpid; /* Child PID */ 1403 int pid; /* PID from wait() */ 1404 char *res; /* result */ 1405 int status; /* command exit status */ 1406 Buffer buf; /* buffer to store the result */ 1407 char *cp; 1408 int cc; 1409 1410 1411 *errnum = NULL; 1412 1413 if (!shellName) 1414 Shell_Init(); 1415 /* 1416 * Set up arguments for shell 1417 */ 1418 args[0] = shellName; 1419 args[1] = "-c"; 1420 args[2] = cmd; 1421 args[3] = NULL; 1422 1423 /* 1424 * Open a pipe for fetching its output 1425 */ 1426 if (pipe(fds) == -1) { 1427 *errnum = "Couldn't create pipe for \"%s\""; 1428 goto bad; 1429 } 1430 1431 /* 1432 * Fork 1433 */ 1434 switch (cpid = vFork()) { 1435 case 0: 1436 /* 1437 * Close input side of pipe 1438 */ 1439 (void)close(fds[0]); 1440 1441 /* 1442 * Duplicate the output stream to the shell's output, then 1443 * shut the extra thing down. Note we don't fetch the error 1444 * stream...why not? Why? 1445 */ 1446 (void)dup2(fds[1], 1); 1447 (void)close(fds[1]); 1448 1449 Var_ExportVars(); 1450 1451 (void)execv(shellPath, UNCONST(args)); 1452 _exit(1); 1453 /*NOTREACHED*/ 1454 1455 case -1: 1456 *errnum = "Couldn't exec \"%s\""; 1457 goto bad; 1458 1459 default: 1460 /* 1461 * No need for the writing half 1462 */ 1463 (void)close(fds[1]); 1464 1465 Buf_Init(&buf, 0); 1466 1467 do { 1468 char result[BUFSIZ]; 1469 cc = read(fds[0], result, sizeof(result)); 1470 if (cc > 0) 1471 Buf_AddBytes(&buf, cc, result); 1472 } 1473 while (cc > 0 || (cc == -1 && errno == EINTR)); 1474 1475 /* 1476 * Close the input side of the pipe. 1477 */ 1478 (void)close(fds[0]); 1479 1480 /* 1481 * Wait for the process to exit. 1482 */ 1483 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1484 JobReapChild(pid, status, FALSE); 1485 continue; 1486 } 1487 cc = Buf_Size(&buf); 1488 res = Buf_Destroy(&buf, FALSE); 1489 1490 if (cc == 0) 1491 *errnum = "Couldn't read shell's output for \"%s\""; 1492 1493 if (WIFSIGNALED(status)) 1494 *errnum = "\"%s\" exited on a signal"; 1495 else if (WEXITSTATUS(status) != 0) 1496 *errnum = "\"%s\" returned non-zero status"; 1497 1498 /* 1499 * Null-terminate the result, convert newlines to spaces and 1500 * install it in the variable. 1501 */ 1502 res[cc] = '\0'; 1503 cp = &res[cc]; 1504 1505 if (cc > 0 && *--cp == '\n') { 1506 /* 1507 * A final newline is just stripped 1508 */ 1509 *cp-- = '\0'; 1510 } 1511 while (cp >= res) { 1512 if (*cp == '\n') { 1513 *cp = ' '; 1514 } 1515 cp--; 1516 } 1517 break; 1518 } 1519 return res; 1520 bad: 1521 res = bmake_malloc(1); 1522 *res = '\0'; 1523 return res; 1524 } 1525 1526 /*- 1527 * Error -- 1528 * Print an error message given its format. 1529 * 1530 * Results: 1531 * None. 1532 * 1533 * Side Effects: 1534 * The message is printed. 1535 */ 1536 /* VARARGS */ 1537 void 1538 Error(const char *fmt, ...) 1539 { 1540 va_list ap; 1541 FILE *err_file; 1542 1543 err_file = debug_file; 1544 if (err_file == stdout) 1545 err_file = stderr; 1546 (void)fflush(stdout); 1547 for (;;) { 1548 va_start(ap, fmt); 1549 fprintf(err_file, "%s: ", progname); 1550 (void)vfprintf(err_file, fmt, ap); 1551 va_end(ap); 1552 (void)fprintf(err_file, "\n"); 1553 (void)fflush(err_file); 1554 if (err_file == stderr) 1555 break; 1556 err_file = stderr; 1557 } 1558 } 1559 1560 /*- 1561 * Fatal -- 1562 * Produce a Fatal error message. If jobs are running, waits for them 1563 * to finish. 1564 * 1565 * Results: 1566 * None 1567 * 1568 * Side Effects: 1569 * The program exits 1570 */ 1571 /* VARARGS */ 1572 void 1573 Fatal(const char *fmt, ...) 1574 { 1575 va_list ap; 1576 1577 va_start(ap, fmt); 1578 if (jobsRunning) 1579 Job_Wait(); 1580 1581 (void)fflush(stdout); 1582 (void)vfprintf(stderr, fmt, ap); 1583 va_end(ap); 1584 (void)fprintf(stderr, "\n"); 1585 (void)fflush(stderr); 1586 1587 PrintOnError(NULL, NULL); 1588 1589 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1590 Targ_PrintGraph(2); 1591 Trace_Log(MAKEERROR, 0); 1592 exit(2); /* Not 1 so -q can distinguish error */ 1593 } 1594 1595 /* 1596 * Punt -- 1597 * Major exception once jobs are being created. Kills all jobs, prints 1598 * a message and exits. 1599 * 1600 * Results: 1601 * None 1602 * 1603 * Side Effects: 1604 * All children are killed indiscriminately and the program Lib_Exits 1605 */ 1606 /* VARARGS */ 1607 void 1608 Punt(const char *fmt, ...) 1609 { 1610 va_list ap; 1611 1612 va_start(ap, fmt); 1613 (void)fflush(stdout); 1614 (void)fprintf(stderr, "%s: ", progname); 1615 (void)vfprintf(stderr, fmt, ap); 1616 va_end(ap); 1617 (void)fprintf(stderr, "\n"); 1618 (void)fflush(stderr); 1619 1620 PrintOnError(NULL, NULL); 1621 1622 DieHorribly(); 1623 } 1624 1625 /*- 1626 * DieHorribly -- 1627 * Exit without giving a message. 1628 * 1629 * Results: 1630 * None 1631 * 1632 * Side Effects: 1633 * A big one... 1634 */ 1635 void 1636 DieHorribly(void) 1637 { 1638 if (jobsRunning) 1639 Job_AbortAll(); 1640 if (DEBUG(GRAPH2)) 1641 Targ_PrintGraph(2); 1642 Trace_Log(MAKEERROR, 0); 1643 exit(2); /* Not 1, so -q can distinguish error */ 1644 } 1645 1646 /* 1647 * Finish -- 1648 * Called when aborting due to errors in child shell to signal 1649 * abnormal exit. 1650 * 1651 * Results: 1652 * None 1653 * 1654 * Side Effects: 1655 * The program exits 1656 */ 1657 void 1658 Finish(int errors) 1659 /* number of errors encountered in Make_Make */ 1660 { 1661 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1662 } 1663 1664 /* 1665 * enunlink -- 1666 * Remove a file carefully, avoiding directories. 1667 */ 1668 int 1669 eunlink(const char *file) 1670 { 1671 struct stat st; 1672 1673 if (lstat(file, &st) == -1) 1674 return -1; 1675 1676 if (S_ISDIR(st.st_mode)) { 1677 errno = EISDIR; 1678 return -1; 1679 } 1680 return unlink(file); 1681 } 1682 1683 /* 1684 * execError -- 1685 * Print why exec failed, avoiding stdio. 1686 */ 1687 void 1688 execError(const char *af, const char *av) 1689 { 1690 #ifdef USE_IOVEC 1691 int i = 0; 1692 struct iovec iov[8]; 1693 #define IOADD(s) \ 1694 (void)(iov[i].iov_base = UNCONST(s), \ 1695 iov[i].iov_len = strlen(iov[i].iov_base), \ 1696 i++) 1697 #else 1698 #define IOADD(void)write(2, s, strlen(s)) 1699 #endif 1700 1701 IOADD(progname); 1702 IOADD(": "); 1703 IOADD(af); 1704 IOADD("("); 1705 IOADD(av); 1706 IOADD(") failed ("); 1707 IOADD(strerror(errno)); 1708 IOADD(")\n"); 1709 1710 #ifdef USE_IOVEC 1711 (void)writev(2, iov, 8); 1712 #endif 1713 } 1714 1715 /* 1716 * usage -- 1717 * exit with usage message 1718 */ 1719 static void 1720 usage(void) 1721 { 1722 (void)fprintf(stderr, 1723 "usage: %s [-BeikNnqrstWX] \n\ 1724 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1725 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1726 [-V variable] [variable=value] [target ...]\n", progname); 1727 exit(2); 1728 } 1729 1730 1731 int 1732 PrintAddr(void *a, void *b) 1733 { 1734 printf("%lx ", (unsigned long) a); 1735 return b ? 0 : 0; 1736 } 1737 1738 1739 1740 void 1741 PrintOnError(GNode *gn, const char *s) 1742 { 1743 static GNode *en = NULL; 1744 char tmp[64]; 1745 char *cp; 1746 1747 if (s) 1748 printf("%s", s); 1749 1750 printf("\n%s: stopped in %s\n", progname, curdir); 1751 1752 if (en) 1753 return; /* we've been here! */ 1754 if (gn) { 1755 /* 1756 * We can print this even if there is no .ERROR target. 1757 */ 1758 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1759 } 1760 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1761 sizeof(tmp) - 1); 1762 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1763 if (cp) { 1764 if (*cp) 1765 printf("%s", cp); 1766 free(cp); 1767 } 1768 /* 1769 * Finally, see if there is a .ERROR target, and run it if so. 1770 */ 1771 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1772 if (en) { 1773 en->type |= OP_SPECIAL; 1774 Compat_Make(en, en); 1775 } 1776 } 1777 1778 void 1779 Main_ExportMAKEFLAGS(Boolean first) 1780 { 1781 static int once = 1; 1782 char tmp[64]; 1783 char *s; 1784 1785 if (once != first) 1786 return; 1787 once = 0; 1788 1789 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1790 sizeof(tmp)); 1791 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1792 if (s && *s) { 1793 #ifdef POSIX 1794 setenv("MAKEFLAGS", s, 1); 1795 #else 1796 setenv("MAKE", s, 1); 1797 #endif 1798 } 1799 } 1800 1801 char * 1802 getTmpdir(void) 1803 { 1804 static char *tmpdir = NULL; 1805 1806 if (!tmpdir) { 1807 struct stat st; 1808 1809 /* 1810 * Honor $TMPDIR but only if it is valid. 1811 * Ensure it ends with /. 1812 */ 1813 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1814 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1815 free(tmpdir); 1816 tmpdir = bmake_strdup(_PATH_TMP); 1817 } 1818 } 1819 return tmpdir; 1820 } 1821 1822 /* 1823 * Create and open a temp file using "pattern". 1824 * If "fnamep" is provided set it to a copy of the filename created. 1825 * Otherwise unlink the file once open. 1826 */ 1827 int 1828 mkTempFile(const char *pattern, char **fnamep) 1829 { 1830 static char *tmpdir = NULL; 1831 char tfile[MAXPATHLEN]; 1832 int fd; 1833 1834 if (!pattern) 1835 pattern = TMPPAT; 1836 if (!tmpdir) 1837 tmpdir = getTmpdir(); 1838 if (pattern[0] == '/') { 1839 snprintf(tfile, sizeof(tfile), "%s", pattern); 1840 } else { 1841 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1842 } 1843 if ((fd = mkstemp(tfile)) < 0) 1844 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1845 if (fnamep) { 1846 *fnamep = bmake_strdup(tfile); 1847 } else { 1848 unlink(tfile); /* we just want the descriptor */ 1849 } 1850 return fd; 1851 } 1852 1853 1854 /* 1855 * Return a Boolean based on setting of a knob. 1856 * 1857 * If the knob is not set, the supplied default is the return value. 1858 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1859 * is FALSE, otherwise TRUE. 1860 */ 1861 Boolean 1862 getBoolean(const char *name, Boolean bf) 1863 { 1864 char tmp[64]; 1865 char *cp; 1866 1867 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1868 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1869 1870 if (cp) { 1871 switch(*cp) { 1872 case '\0': /* not set - the default wins */ 1873 break; 1874 case '0': 1875 case 'f': 1876 case 'n': 1877 bf = FALSE; 1878 break; 1879 case 'o': 1880 switch (cp[1]) { 1881 case 'f': 1882 bf = FALSE; 1883 break; 1884 default: 1885 bf = TRUE; 1886 break; 1887 } 1888 break; 1889 default: 1890 bf = TRUE; 1891 break; 1892 } 1893 free(cp); 1894 } 1895 } 1896 return (bf); 1897 } 1898
Indexes created Thu Oct 23 22:10:10 GMT 2025