1 /* $NetBSD: main.c,v 1.582 2022/05/07 17:49:47 rillig 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 /* 72 * The main file for this entire program. Exit routines etc. reside here. 73 * 74 * Utility functions defined in this file: 75 * 76 * Main_ParseArgLine 77 * Parse and process command line arguments from a 78 * single string. Used to implement the special targets 79 * .MFLAGS and .MAKEFLAGS. 80 * 81 * Error Print a tagged error message. 82 * 83 * Fatal Print an error message and exit. 84 * 85 * Punt Abort all jobs and exit with a message. 86 * 87 * Finish Finish things up by printing the number of errors 88 * that occurred, and exit. 89 */ 90 91 #include <sys/types.h> 92 #include <sys/time.h> 93 #include <sys/param.h> 94 #include <sys/resource.h> 95 #include <sys/stat.h> 96 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) 97 #include <sys/sysctl.h> 98 #endif 99 #include <sys/utsname.h> 100 #include "wait.h" 101 102 #include <errno.h> 103 #include <signal.h> 104 #include <stdarg.h> 105 #include <time.h> 106 107 #include "make.h" 108 #include "dir.h" 109 #include "job.h" 110 #include "pathnames.h" 111 #include "trace.h" 112 113 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 114 MAKE_RCSID("$NetBSD: main.c,v 1.582 2022/05/07 17:49:47 rillig Exp $"); 115 #if defined(MAKE_NATIVE) && !defined(lint) 116 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 " 117 "The Regents of the University of California. " 118 "All rights reserved."); 119 #endif 120 121 #ifndef __arraycount 122 # define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) 123 #endif 124 125 CmdOpts opts; 126 time_t now; /* Time at start of make */ 127 GNode *defaultNode; /* .DEFAULT node */ 128 bool allPrecious; /* .PRECIOUS given on line by itself */ 129 bool deleteOnError; /* .DELETE_ON_ERROR: set */ 130 131 static int maxJobTokens; /* -j argument */ 132 bool enterFlagObj; /* -w and objdir != srcdir */ 133 134 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 135 bool doing_depend; /* Set while reading .depend */ 136 static bool jobsRunning; /* true if the jobs might be running */ 137 static const char *tracefile; 138 static bool ReadMakefile(const char *); 139 static void purge_relative_cached_realpaths(void); 140 141 static bool ignorePWD; /* if we use -C, PWD is meaningless */ 142 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 143 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 144 const char *progname; 145 char *makeDependfile; 146 pid_t myPid; 147 int makelevel; 148 149 bool forceJobs = false; 150 static int main_errors = 0; 151 static HashTable cached_realpaths; 152 153 /* 154 * For compatibility with the POSIX version of MAKEFLAGS that includes 155 * all the options without '-', convert 'flags' to '-f -l -a -g -s'. 156 */ 157 static char * 158 explode(const char *flags) 159 { 160 char *exploded, *ep; 161 const char *p; 162 163 if (flags == NULL) 164 return NULL; 165 166 for (p = flags; *p != '\0'; p++) 167 if (!ch_isalpha(*p)) 168 return bmake_strdup(flags); 169 170 exploded = bmake_malloc((size_t)(p - flags) * 3 + 1); 171 for (p = flags, ep = exploded; *p != '\0'; p++) { 172 *ep++ = '-'; 173 *ep++ = *p; 174 *ep++ = ' '; 175 } 176 *ep = '\0'; 177 return exploded; 178 } 179 180 MAKE_ATTR_DEAD static void 181 usage(void) 182 { 183 size_t prognameLen = strcspn(progname, "["); 184 185 (void)fprintf(stderr, 186 "usage: %.*s [-BeikNnqrSstWwX]\n" 187 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 188 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 189 " [-V variable] [-v variable] [variable=value] [target ...]\n", 190 (int)prognameLen, progname); 191 exit(2); 192 } 193 194 static void 195 MainParseArgDebugFile(const char *arg) 196 { 197 const char *mode; 198 size_t len; 199 char *fname; 200 201 if (opts.debug_file != stdout && opts.debug_file != stderr) 202 fclose(opts.debug_file); 203 204 if (*arg == '+') { 205 arg++; 206 mode = "a"; 207 } else 208 mode = "w"; 209 210 if (strcmp(arg, "stdout") == 0) { 211 opts.debug_file = stdout; 212 return; 213 } 214 if (strcmp(arg, "stderr") == 0) { 215 opts.debug_file = stderr; 216 return; 217 } 218 219 len = strlen(arg); 220 fname = bmake_malloc(len + 20); 221 memcpy(fname, arg, len + 1); 222 223 /* Replace the trailing '%d' after '.%d' with the pid. */ 224 if (len >= 3 && memcmp(fname + len - 3, ".%d", 3) == 0) 225 snprintf(fname + len - 2, 20, "%d", getpid()); 226 227 opts.debug_file = fopen(fname, mode); 228 if (opts.debug_file == NULL) { 229 fprintf(stderr, "Cannot open debug file \"%s\"\n", 230 fname); 231 exit(2); 232 } 233 free(fname); 234 } 235 236 static void 237 MainParseArgDebug(const char *argvalue) 238 { 239 const char *modules; 240 DebugFlags debug = opts.debug; 241 242 for (modules = argvalue; *modules != '\0'; modules++) { 243 switch (*modules) { 244 case '0': /* undocumented, only intended for tests */ 245 memset(&debug, 0, sizeof(debug)); 246 break; 247 case 'A': 248 memset(&debug, ~0, sizeof(debug)); 249 break; 250 case 'a': 251 debug.DEBUG_ARCH = true; 252 break; 253 case 'C': 254 debug.DEBUG_CWD = true; 255 break; 256 case 'c': 257 debug.DEBUG_COND = true; 258 break; 259 case 'd': 260 debug.DEBUG_DIR = true; 261 break; 262 case 'e': 263 debug.DEBUG_ERROR = true; 264 break; 265 case 'f': 266 debug.DEBUG_FOR = true; 267 break; 268 case 'g': 269 if (modules[1] == '1') { 270 debug.DEBUG_GRAPH1 = true; 271 modules++; 272 } else if (modules[1] == '2') { 273 debug.DEBUG_GRAPH2 = true; 274 modules++; 275 } else if (modules[1] == '3') { 276 debug.DEBUG_GRAPH3 = true; 277 modules++; 278 } 279 break; 280 case 'h': 281 debug.DEBUG_HASH = true; 282 break; 283 case 'j': 284 debug.DEBUG_JOB = true; 285 break; 286 case 'L': 287 opts.strict = true; 288 break; 289 case 'l': 290 debug.DEBUG_LOUD = true; 291 break; 292 case 'M': 293 debug.DEBUG_META = true; 294 break; 295 case 'm': 296 debug.DEBUG_MAKE = true; 297 break; 298 case 'n': 299 debug.DEBUG_SCRIPT = true; 300 break; 301 case 'p': 302 debug.DEBUG_PARSE = true; 303 break; 304 case 's': 305 debug.DEBUG_SUFF = true; 306 break; 307 case 't': 308 debug.DEBUG_TARG = true; 309 break; 310 case 'V': 311 opts.debugVflag = true; 312 break; 313 case 'v': 314 debug.DEBUG_VAR = true; 315 break; 316 case 'x': 317 debug.DEBUG_SHELL = true; 318 break; 319 case 'F': 320 MainParseArgDebugFile(modules + 1); 321 goto finish; 322 default: 323 (void)fprintf(stderr, 324 "%s: illegal argument to d option -- %c\n", 325 progname, *modules); 326 usage(); 327 } 328 } 329 330 finish: 331 opts.debug = debug; 332 333 setvbuf(opts.debug_file, NULL, _IONBF, 0); 334 if (opts.debug_file != stdout) 335 setvbuf(stdout, NULL, _IOLBF, 0); 336 } 337 338 /* Is path relative or does it contain any relative component "." or ".."? */ 339 static bool 340 IsRelativePath(const char *path) 341 { 342 const char *p; 343 344 if (path[0] != '/') 345 return true; 346 p = path; 347 while ((p = strstr(p, "/.")) != NULL) { 348 p += 2; 349 if (*p == '.') 350 p++; 351 if (*p == '/' || *p == '\0') 352 return true; 353 } 354 return false; 355 } 356 357 static void 358 MainParseArgChdir(const char *argvalue) 359 { 360 struct stat sa, sb; 361 362 if (chdir(argvalue) == -1) { 363 (void)fprintf(stderr, "%s: chdir %s: %s\n", 364 progname, argvalue, strerror(errno)); 365 exit(2); /* Not 1 so -q can distinguish error */ 366 } 367 if (getcwd(curdir, MAXPATHLEN) == NULL) { 368 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 369 exit(2); 370 } 371 if (!IsRelativePath(argvalue) && 372 stat(argvalue, &sa) != -1 && 373 stat(curdir, &sb) != -1 && 374 sa.st_ino == sb.st_ino && 375 sa.st_dev == sb.st_dev) 376 strncpy(curdir, argvalue, MAXPATHLEN); 377 ignorePWD = true; 378 } 379 380 static void 381 MainParseArgJobsInternal(const char *argvalue) 382 { 383 char end; 384 if (sscanf(argvalue, "%d,%d%c", &jp_0, &jp_1, &end) != 2) { 385 (void)fprintf(stderr, 386 "%s: internal error -- J option malformed (%s)\n", 387 progname, argvalue); 388 usage(); 389 } 390 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 391 (fcntl(jp_1, F_GETFD, 0) < 0)) { 392 jp_0 = -1; 393 jp_1 = -1; 394 opts.compatMake = true; 395 } else { 396 Global_Append(MAKEFLAGS, "-J"); 397 Global_Append(MAKEFLAGS, argvalue); 398 } 399 } 400 401 static void 402 MainParseArgJobs(const char *argvalue) 403 { 404 char *p; 405 406 forceJobs = true; 407 opts.maxJobs = (int)strtol(argvalue, &p, 0); 408 if (*p != '\0' || opts.maxJobs < 1) { 409 (void)fprintf(stderr, 410 "%s: illegal argument to -j -- must be positive integer!\n", 411 progname); 412 exit(2); /* Not 1 so -q can distinguish error */ 413 } 414 Global_Append(MAKEFLAGS, "-j"); 415 Global_Append(MAKEFLAGS, argvalue); 416 Global_Set(".MAKE.JOBS", argvalue); 417 maxJobTokens = opts.maxJobs; 418 } 419 420 static void 421 MainParseArgSysInc(const char *argvalue) 422 { 423 /* look for magic parent directory search string */ 424 if (strncmp(".../", argvalue, 4) == 0) { 425 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 426 if (found_path == NULL) 427 return; 428 (void)SearchPath_Add(sysIncPath, found_path); 429 free(found_path); 430 } else { 431 (void)SearchPath_Add(sysIncPath, argvalue); 432 } 433 Global_Append(MAKEFLAGS, "-m"); 434 Global_Append(MAKEFLAGS, argvalue); 435 } 436 437 static bool 438 MainParseArg(char c, const char *argvalue) 439 { 440 switch (c) { 441 case '\0': 442 break; 443 case 'B': 444 opts.compatMake = true; 445 Global_Append(MAKEFLAGS, "-B"); 446 Global_Set(MAKE_MODE, "compat"); 447 break; 448 case 'C': 449 MainParseArgChdir(argvalue); 450 break; 451 case 'D': 452 if (argvalue[0] == '\0') 453 return false; 454 Var_SetExpand(SCOPE_GLOBAL, argvalue, "1"); 455 Global_Append(MAKEFLAGS, "-D"); 456 Global_Append(MAKEFLAGS, argvalue); 457 break; 458 case 'I': 459 Parse_AddIncludeDir(argvalue); 460 Global_Append(MAKEFLAGS, "-I"); 461 Global_Append(MAKEFLAGS, argvalue); 462 break; 463 case 'J': 464 MainParseArgJobsInternal(argvalue); 465 break; 466 case 'N': 467 opts.noExecute = true; 468 opts.noRecursiveExecute = true; 469 Global_Append(MAKEFLAGS, "-N"); 470 break; 471 case 'S': 472 opts.keepgoing = false; 473 Global_Append(MAKEFLAGS, "-S"); 474 break; 475 case 'T': 476 tracefile = bmake_strdup(argvalue); 477 Global_Append(MAKEFLAGS, "-T"); 478 Global_Append(MAKEFLAGS, argvalue); 479 break; 480 case 'V': 481 case 'v': 482 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED; 483 Lst_Append(&opts.variables, bmake_strdup(argvalue)); 484 /* XXX: Why always -V? */ 485 Global_Append(MAKEFLAGS, "-V"); 486 Global_Append(MAKEFLAGS, argvalue); 487 break; 488 case 'W': 489 opts.parseWarnFatal = true; 490 /* XXX: why no Global_Append? */ 491 break; 492 case 'X': 493 opts.varNoExportEnv = true; 494 Global_Append(MAKEFLAGS, "-X"); 495 break; 496 case 'd': 497 /* If '-d-opts' don't pass to children */ 498 if (argvalue[0] == '-') 499 argvalue++; 500 else { 501 Global_Append(MAKEFLAGS, "-d"); 502 Global_Append(MAKEFLAGS, argvalue); 503 } 504 MainParseArgDebug(argvalue); 505 break; 506 case 'e': 507 opts.checkEnvFirst = true; 508 Global_Append(MAKEFLAGS, "-e"); 509 break; 510 case 'f': 511 Lst_Append(&opts.makefiles, bmake_strdup(argvalue)); 512 break; 513 case 'i': 514 opts.ignoreErrors = true; 515 Global_Append(MAKEFLAGS, "-i"); 516 break; 517 case 'j': 518 MainParseArgJobs(argvalue); 519 break; 520 case 'k': 521 opts.keepgoing = true; 522 Global_Append(MAKEFLAGS, "-k"); 523 break; 524 case 'm': 525 MainParseArgSysInc(argvalue); 526 /* XXX: why no Var_Append? */ 527 break; 528 case 'n': 529 opts.noExecute = true; 530 Global_Append(MAKEFLAGS, "-n"); 531 break; 532 case 'q': 533 opts.query = true; 534 /* Kind of nonsensical, wot? */ 535 Global_Append(MAKEFLAGS, "-q"); 536 break; 537 case 'r': 538 opts.noBuiltins = true; 539 Global_Append(MAKEFLAGS, "-r"); 540 break; 541 case 's': 542 opts.silent = true; 543 Global_Append(MAKEFLAGS, "-s"); 544 break; 545 case 't': 546 opts.touch = true; 547 Global_Append(MAKEFLAGS, "-t"); 548 break; 549 case 'w': 550 opts.enterFlag = true; 551 Global_Append(MAKEFLAGS, "-w"); 552 break; 553 default: 554 usage(); 555 } 556 return true; 557 } 558 559 /* 560 * Parse the given arguments. Called from main() and from 561 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 562 * 563 * The arguments must be treated as read-only and will be freed after the 564 * call. 565 * 566 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 567 */ 568 static void 569 MainParseArgs(int argc, char **argv) 570 { 571 char c; 572 int arginc; 573 char *argvalue; 574 char *optscan; 575 bool inOption, dashDash = false; 576 577 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 578 /* Can't actually use getopt(3) because rescanning is not portable */ 579 580 rearg: 581 inOption = false; 582 optscan = NULL; 583 while (argc > 1) { 584 const char *optspec; 585 if (!inOption) 586 optscan = argv[1]; 587 c = *optscan++; 588 arginc = 0; 589 if (inOption) { 590 if (c == '\0') { 591 argv++; 592 argc--; 593 inOption = false; 594 continue; 595 } 596 } else { 597 if (c != '-' || dashDash) 598 break; 599 inOption = true; 600 c = *optscan++; 601 } 602 /* '-' found at some earlier point */ 603 optspec = strchr(optspecs, c); 604 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 605 /* 606 * -<something> found, and <something> should have an 607 * argument 608 */ 609 inOption = false; 610 arginc = 1; 611 argvalue = optscan; 612 if (*argvalue == '\0') { 613 if (argc < 3) 614 goto noarg; 615 argvalue = argv[2]; 616 arginc = 2; 617 } 618 } else { 619 argvalue = NULL; 620 } 621 switch (c) { 622 case '\0': 623 arginc = 1; 624 inOption = false; 625 break; 626 case '-': 627 dashDash = true; 628 break; 629 default: 630 if (!MainParseArg(c, argvalue)) 631 goto noarg; 632 } 633 argv += arginc; 634 argc -= arginc; 635 } 636 637 /* 638 * See if the rest of the arguments are variable assignments and 639 * perform them if so. Else take them to be targets and stuff them 640 * on the end of the "create" list. 641 */ 642 for (; argc > 1; argv++, argc--) { 643 if (!Parse_VarAssign(argv[1], false, SCOPE_CMDLINE)) { 644 if (argv[1][0] == '\0') 645 Punt("illegal (null) argument."); 646 if (argv[1][0] == '-' && !dashDash) 647 goto rearg; 648 Lst_Append(&opts.create, bmake_strdup(argv[1])); 649 } 650 } 651 652 return; 653 noarg: 654 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 655 progname, c); 656 usage(); 657 } 658 659 /* 660 * Break a line of arguments into words and parse them. 661 * 662 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 663 * by main() when reading the MAKEFLAGS environment variable. 664 */ 665 void 666 Main_ParseArgLine(const char *line) 667 { 668 Words words; 669 char *buf; 670 671 if (line == NULL) 672 return; 673 /* XXX: don't use line as an iterator variable */ 674 for (; *line == ' '; line++) 675 continue; 676 if (line[0] == '\0') 677 return; 678 679 #ifndef POSIX 680 { 681 /* 682 * $MAKE may simply be naming the make(1) binary 683 */ 684 char *cp; 685 686 if (!(cp = strrchr(line, '/'))) 687 cp = line; 688 if ((cp = strstr(cp, "make")) && 689 strcmp(cp, "make") == 0) 690 return; 691 } 692 #endif 693 { 694 FStr argv0 = Var_Value(SCOPE_GLOBAL, ".MAKE"); 695 buf = str_concat3(argv0.str, " ", line); 696 FStr_Done(&argv0); 697 } 698 699 words = Str_Words(buf, true); 700 if (words.words == NULL) { 701 Error("Unterminated quoted string [%s]", buf); 702 free(buf); 703 return; 704 } 705 free(buf); 706 MainParseArgs((int)words.len, words.words); 707 708 Words_Free(words); 709 } 710 711 bool 712 Main_SetObjdir(bool writable, const char *fmt, ...) 713 { 714 struct stat sb; 715 char *path; 716 char buf[MAXPATHLEN + 1]; 717 char buf2[MAXPATHLEN + 1]; 718 va_list ap; 719 720 va_start(ap, fmt); 721 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 722 va_end(ap); 723 724 if (path[0] != '/') { 725 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 726 path = buf2; 727 } 728 729 /* look for the directory and try to chdir there */ 730 if (stat(path, &sb) != 0 || !S_ISDIR(sb.st_mode)) 731 return false; 732 733 if ((writable && access(path, W_OK) != 0) || chdir(path) != 0) { 734 (void)fprintf(stderr, "%s: warning: %s: %s.\n", 735 progname, path, strerror(errno)); 736 return false; 737 } 738 739 snprintf(objdir, sizeof objdir, "%s", path); 740 Global_Set(".OBJDIR", objdir); 741 setenv("PWD", objdir, 1); 742 Dir_InitDot(); 743 purge_relative_cached_realpaths(); 744 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 745 enterFlagObj = true; 746 return true; 747 } 748 749 static bool 750 SetVarObjdir(bool writable, const char *var, const char *suffix) 751 { 752 FStr path = Var_Value(SCOPE_CMDLINE, var); 753 754 if (path.str == NULL || path.str[0] == '\0') { 755 FStr_Done(&path); 756 return false; 757 } 758 759 Var_Expand(&path, SCOPE_GLOBAL, VARE_WANTRES); 760 761 (void)Main_SetObjdir(writable, "%s%s", path.str, suffix); 762 763 FStr_Done(&path); 764 return true; 765 } 766 767 /* 768 * Splits str into words, adding them to the list. 769 * The string must be kept alive as long as the list. 770 */ 771 int 772 str2Lst_Append(StringList *lp, char *str) 773 { 774 char *cp; 775 int n; 776 777 const char *sep = " \t"; 778 779 for (n = 0, cp = strtok(str, sep); cp != NULL; cp = strtok(NULL, sep)) { 780 Lst_Append(lp, cp); 781 n++; 782 } 783 return n; 784 } 785 786 #ifdef SIGINFO 787 /*ARGSUSED*/ 788 static void 789 siginfo(int signo MAKE_ATTR_UNUSED) 790 { 791 char dir[MAXPATHLEN]; 792 char str[2 * MAXPATHLEN]; 793 int len; 794 if (getcwd(dir, sizeof dir) == NULL) 795 return; 796 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 797 if (len > 0) 798 (void)write(STDERR_FILENO, str, (size_t)len); 799 } 800 #endif 801 802 /* Allow makefiles some control over the mode we run in. */ 803 static void 804 MakeMode(void) 805 { 806 char *mode; 807 808 (void)Var_Subst("${" MAKE_MODE ":tl}", SCOPE_GLOBAL, VARE_WANTRES, &mode); 809 /* TODO: handle errors */ 810 811 if (mode[0] != '\0') { 812 if (strstr(mode, "compat") != NULL) { 813 opts.compatMake = true; 814 forceJobs = false; 815 } 816 #if USE_META 817 if (strstr(mode, "meta") != NULL) 818 meta_mode_init(mode); 819 #endif 820 if (strstr(mode, "randomize-targets") != NULL) 821 opts.randomizeTargets = true; 822 } 823 824 free(mode); 825 } 826 827 static void 828 PrintVar(const char *varname, bool expandVars) 829 { 830 if (strchr(varname, '$') != NULL) { 831 char *evalue; 832 (void)Var_Subst(varname, SCOPE_GLOBAL, VARE_WANTRES, &evalue); 833 /* TODO: handle errors */ 834 printf("%s\n", evalue); 835 free(evalue); 836 837 } else if (expandVars) { 838 char *expr = str_concat3("${", varname, "}"); 839 char *evalue; 840 (void)Var_Subst(expr, SCOPE_GLOBAL, VARE_WANTRES, &evalue); 841 /* TODO: handle errors */ 842 free(expr); 843 printf("%s\n", evalue); 844 free(evalue); 845 846 } else { 847 FStr value = Var_Value(SCOPE_GLOBAL, varname); 848 printf("%s\n", value.str != NULL ? value.str : ""); 849 FStr_Done(&value); 850 } 851 } 852 853 /* 854 * Return a bool based on a variable. 855 * 856 * If the knob is not set, return the fallback. 857 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 858 * is false, otherwise true. 859 */ 860 bool 861 GetBooleanExpr(const char *expr, bool fallback) 862 { 863 char *value; 864 bool res; 865 866 (void)Var_Subst(expr, SCOPE_GLOBAL, VARE_WANTRES, &value); 867 /* TODO: handle errors */ 868 res = ParseBoolean(value, fallback); 869 free(value); 870 return res; 871 } 872 873 static void 874 doPrintVars(void) 875 { 876 StringListNode *ln; 877 bool expandVars; 878 879 if (opts.printVars == PVM_EXPANDED) 880 expandVars = true; 881 else if (opts.debugVflag) 882 expandVars = false; 883 else 884 expandVars = GetBooleanExpr("${.MAKE.EXPAND_VARIABLES}", 885 false); 886 887 for (ln = opts.variables.first; ln != NULL; ln = ln->next) { 888 const char *varname = ln->datum; 889 PrintVar(varname, expandVars); 890 } 891 } 892 893 static bool 894 runTargets(void) 895 { 896 GNodeList targs = LST_INIT; /* target nodes to create */ 897 bool outOfDate; /* false if all targets up to date */ 898 899 /* 900 * Have now read the entire graph and need to make a list of 901 * targets to create. If none was given on the command line, 902 * we consult the parsing module to find the main target(s) 903 * to create. 904 */ 905 if (Lst_IsEmpty(&opts.create)) 906 Parse_MainName(&targs); 907 else 908 Targ_FindList(&targs, &opts.create); 909 910 if (!opts.compatMake) { 911 /* 912 * Initialize job module before traversing the graph 913 * now that any .BEGIN and .END targets have been read. 914 * This is done only if the -q flag wasn't given 915 * (to prevent the .BEGIN from being executed should 916 * it exist). 917 */ 918 if (!opts.query) { 919 Job_Init(); 920 jobsRunning = true; 921 } 922 923 /* Traverse the graph, checking on all the targets */ 924 outOfDate = Make_Run(&targs); 925 } else { 926 Compat_MakeAll(&targs); 927 outOfDate = false; 928 } 929 Lst_Done(&targs); /* Don't free the targets themselves. */ 930 return outOfDate; 931 } 932 933 /* 934 * Set up the .TARGETS variable to contain the list of targets to be created. 935 * If none specified, make the variable empty for now, the parser will fill 936 * in the default or .MAIN target later. 937 */ 938 static void 939 InitVarTargets(void) 940 { 941 StringListNode *ln; 942 943 if (Lst_IsEmpty(&opts.create)) { 944 Global_Set(".TARGETS", ""); 945 return; 946 } 947 948 for (ln = opts.create.first; ln != NULL; ln = ln->next) { 949 const char *name = ln->datum; 950 Global_Append(".TARGETS", name); 951 } 952 } 953 954 static void 955 InitRandom(void) 956 { 957 struct timeval tv; 958 959 gettimeofday(&tv, NULL); 960 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 961 } 962 963 static const char * 964 InitVarMachine(const struct utsname *utsname MAKE_ATTR_UNUSED) 965 { 966 #ifdef FORCE_MACHINE 967 return FORCE_MACHINE; 968 #else 969 const char *machine = getenv("MACHINE"); 970 971 if (machine != NULL) 972 return machine; 973 974 #if defined(MAKE_NATIVE) 975 return utsname->machine; 976 #elif defined(MAKE_MACHINE) 977 return MAKE_MACHINE; 978 #else 979 return "unknown"; 980 #endif 981 #endif 982 } 983 984 static const char * 985 InitVarMachineArch(void) 986 { 987 #ifdef FORCE_MACHINE_ARCH 988 return FORCE_MACHINE_ARCH; 989 #else 990 const char *env = getenv("MACHINE_ARCH"); 991 if (env != NULL) 992 return env; 993 994 #if defined(MAKE_NATIVE) && defined(CTL_HW) 995 { 996 struct utsname utsname; 997 static char machine_arch_buf[sizeof utsname.machine]; 998 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 999 size_t len = sizeof machine_arch_buf; 1000 1001 if (sysctl(mib, (unsigned int)__arraycount(mib), 1002 machine_arch_buf, &len, NULL, 0) < 0) { 1003 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", 1004 progname, strerror(errno)); 1005 exit(2); 1006 } 1007 1008 return machine_arch_buf; 1009 } 1010 #elif defined(MACHINE_ARCH) 1011 return MACHINE_ARCH; 1012 #elif defined(MAKE_MACHINE_ARCH) 1013 return MAKE_MACHINE_ARCH; 1014 #else 1015 return "unknown"; 1016 #endif 1017 #endif 1018 } 1019 1020 #ifndef NO_PWD_OVERRIDE 1021 /* 1022 * All this code is so that we know where we are when we start up 1023 * on a different machine with pmake. 1024 * 1025 * XXX: Make no longer has "local" and "remote" mode. Is this code still 1026 * necessary? 1027 * 1028 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1029 * since the value of curdir can vary depending on how we got 1030 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1031 * or via subdir.mk in which case its likely a shell which does 1032 * not provide it. 1033 * 1034 * So, to stop it breaking this case only, we ignore PWD if 1035 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1036 */ 1037 static void 1038 HandlePWD(const struct stat *curdir_st) 1039 { 1040 char *pwd; 1041 FStr makeobjdir; 1042 struct stat pwd_st; 1043 1044 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1045 return; 1046 1047 if (Var_Exists(SCOPE_CMDLINE, "MAKEOBJDIRPREFIX")) 1048 return; 1049 1050 makeobjdir = Var_Value(SCOPE_CMDLINE, "MAKEOBJDIR"); 1051 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL) 1052 goto ignore_pwd; 1053 1054 if (stat(pwd, &pwd_st) == 0 && 1055 curdir_st->st_ino == pwd_st.st_ino && 1056 curdir_st->st_dev == pwd_st.st_dev) 1057 (void)strncpy(curdir, pwd, MAXPATHLEN); 1058 1059 ignore_pwd: 1060 FStr_Done(&makeobjdir); 1061 } 1062 #endif 1063 1064 /* 1065 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, MAKEOBJDIR is set 1066 * in the environment, try only that value and fall back to .CURDIR if it 1067 * does not exist. 1068 * 1069 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1070 * and finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none of these 1071 * paths exist, just use .CURDIR. 1072 */ 1073 static void 1074 InitObjdir(const char *machine, const char *machine_arch) 1075 { 1076 bool writable; 1077 1078 Dir_InitCur(curdir); 1079 writable = GetBooleanExpr("${MAKE_OBJDIR_CHECK_WRITABLE}", true); 1080 (void)Main_SetObjdir(false, "%s", curdir); 1081 1082 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1083 !SetVarObjdir(writable, "MAKEOBJDIR", "") && 1084 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1085 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1086 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1087 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1088 } 1089 1090 /* get rid of resource limit on file descriptors */ 1091 static void 1092 UnlimitFiles(void) 1093 { 1094 #if defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE) 1095 struct rlimit rl; 1096 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1097 rl.rlim_cur != rl.rlim_max) { 1098 rl.rlim_cur = rl.rlim_max; 1099 (void)setrlimit(RLIMIT_NOFILE, &rl); 1100 } 1101 #endif 1102 } 1103 1104 static void 1105 CmdOpts_Init(void) 1106 { 1107 opts.compatMake = false; 1108 memset(&opts.debug, 0, sizeof(opts.debug)); 1109 /* opts.debug_file has already been initialized earlier */ 1110 opts.strict = false; 1111 opts.debugVflag = false; 1112 opts.checkEnvFirst = false; 1113 Lst_Init(&opts.makefiles); 1114 opts.ignoreErrors = false; /* Pay attention to non-zero returns */ 1115 opts.maxJobs = 1; 1116 opts.keepgoing = false; /* Stop on error */ 1117 opts.noRecursiveExecute = false; /* Execute all .MAKE targets */ 1118 opts.noExecute = false; /* Execute all commands */ 1119 opts.query = false; 1120 opts.noBuiltins = false; /* Read the built-in rules */ 1121 opts.silent = false; /* Print commands as executed */ 1122 opts.touch = false; 1123 opts.printVars = PVM_NONE; 1124 Lst_Init(&opts.variables); 1125 opts.parseWarnFatal = false; 1126 opts.enterFlag = false; 1127 opts.varNoExportEnv = false; 1128 Lst_Init(&opts.create); 1129 } 1130 1131 /* 1132 * Initialize MAKE and .MAKE to the path of the executable, so that it can be 1133 * found by execvp(3) and the shells, even after a chdir. 1134 * 1135 * If it's a relative path and contains a '/', resolve it to an absolute path. 1136 * Otherwise keep it as is, assuming it will be found in the PATH. 1137 */ 1138 static void 1139 InitVarMake(const char *argv0) 1140 { 1141 const char *make = argv0; 1142 1143 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1144 char pathbuf[MAXPATHLEN]; 1145 const char *abspath = cached_realpath(argv0, pathbuf); 1146 struct stat st; 1147 if (abspath != NULL && abspath[0] == '/' && 1148 stat(make, &st) == 0) 1149 make = abspath; 1150 } 1151 1152 Global_Set("MAKE", make); 1153 Global_Set(".MAKE", make); 1154 } 1155 1156 /* 1157 * Add the directories from the colon-separated syspath to defSysIncPath. 1158 * After returning, the contents of syspath is unspecified. 1159 */ 1160 static void 1161 InitDefSysIncPath(char *syspath) 1162 { 1163 static char defsyspath[] = _PATH_DEFSYSPATH; 1164 char *start, *cp; 1165 1166 /* 1167 * If no user-supplied system path was given (through the -m option) 1168 * add the directories from the DEFSYSPATH (more than one may be given 1169 * as dir1:...:dirn) to the system include path. 1170 */ 1171 if (syspath == NULL || syspath[0] == '\0') 1172 syspath = defsyspath; 1173 else 1174 syspath = bmake_strdup(syspath); 1175 1176 for (start = syspath; *start != '\0'; start = cp) { 1177 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1178 continue; 1179 if (*cp == ':') 1180 *cp++ = '\0'; 1181 1182 /* look for magic parent directory search string */ 1183 if (strncmp(start, ".../", 4) == 0) { 1184 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1185 if (dir != NULL) { 1186 (void)SearchPath_Add(defSysIncPath, dir); 1187 free(dir); 1188 } 1189 } else { 1190 (void)SearchPath_Add(defSysIncPath, start); 1191 } 1192 } 1193 1194 if (syspath != defsyspath) 1195 free(syspath); 1196 } 1197 1198 static void 1199 ReadBuiltinRules(void) 1200 { 1201 StringListNode *ln; 1202 StringList sysMkFiles = LST_INIT; 1203 1204 SearchPath_Expand( 1205 Lst_IsEmpty(&sysIncPath->dirs) ? defSysIncPath : sysIncPath, 1206 _PATH_DEFSYSMK, 1207 &sysMkFiles); 1208 if (Lst_IsEmpty(&sysMkFiles)) 1209 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1210 1211 for (ln = sysMkFiles.first; ln != NULL; ln = ln->next) 1212 if (ReadMakefile(ln->datum)) 1213 break; 1214 1215 if (ln == NULL) 1216 Fatal("%s: cannot open %s.", 1217 progname, (const char *)sysMkFiles.first->datum); 1218 1219 Lst_DoneCall(&sysMkFiles, free); 1220 } 1221 1222 static void 1223 InitMaxJobs(void) 1224 { 1225 char *value; 1226 int n; 1227 1228 if (forceJobs || opts.compatMake || 1229 !Var_Exists(SCOPE_GLOBAL, ".MAKE.JOBS")) 1230 return; 1231 1232 (void)Var_Subst("${.MAKE.JOBS}", SCOPE_GLOBAL, VARE_WANTRES, &value); 1233 /* TODO: handle errors */ 1234 n = (int)strtol(value, NULL, 0); 1235 if (n < 1) { 1236 (void)fprintf(stderr, 1237 "%s: illegal value for .MAKE.JOBS " 1238 "-- must be positive integer!\n", 1239 progname); 1240 exit(2); /* Not 1 so -q can distinguish error */ 1241 } 1242 1243 if (n != opts.maxJobs) { 1244 Global_Append(MAKEFLAGS, "-j"); 1245 Global_Append(MAKEFLAGS, value); 1246 } 1247 1248 opts.maxJobs = n; 1249 maxJobTokens = opts.maxJobs; 1250 forceJobs = true; 1251 free(value); 1252 } 1253 1254 /* 1255 * For compatibility, look at the directories in the VPATH variable 1256 * and add them to the search path, if the variable is defined. The 1257 * variable's value is in the same format as the PATH environment 1258 * variable, i.e. <directory>:<directory>:<directory>... 1259 */ 1260 static void 1261 InitVpath(void) 1262 { 1263 char *vpath, savec, *path; 1264 if (!Var_Exists(SCOPE_CMDLINE, "VPATH")) 1265 return; 1266 1267 (void)Var_Subst("${VPATH}", SCOPE_CMDLINE, VARE_WANTRES, &vpath); 1268 /* TODO: handle errors */ 1269 path = vpath; 1270 do { 1271 char *cp; 1272 /* skip to end of directory */ 1273 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1274 continue; 1275 /* Save terminator character so know when to stop */ 1276 savec = *cp; 1277 *cp = '\0'; 1278 /* Add directory to search path */ 1279 (void)SearchPath_Add(&dirSearchPath, path); 1280 *cp = savec; 1281 path = cp + 1; 1282 } while (savec == ':'); 1283 free(vpath); 1284 } 1285 1286 static void 1287 ReadAllMakefiles(const StringList *makefiles) 1288 { 1289 StringListNode *ln; 1290 1291 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1292 const char *fname = ln->datum; 1293 if (!ReadMakefile(fname)) 1294 Fatal("%s: cannot open %s.", progname, fname); 1295 } 1296 } 1297 1298 static void 1299 ReadFirstDefaultMakefile(void) 1300 { 1301 StringList makefiles = LST_INIT; 1302 StringListNode *ln; 1303 char *prefs; 1304 1305 (void)Var_Subst("${" MAKE_MAKEFILE_PREFERENCE "}", 1306 SCOPE_CMDLINE, VARE_WANTRES, &prefs); 1307 /* TODO: handle errors */ 1308 1309 (void)str2Lst_Append(&makefiles, prefs); 1310 1311 for (ln = makefiles.first; ln != NULL; ln = ln->next) 1312 if (ReadMakefile(ln->datum)) 1313 break; 1314 1315 Lst_Done(&makefiles); 1316 free(prefs); 1317 } 1318 1319 /* 1320 * Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1321 * Initialize a few modules. 1322 * Parse the arguments from MAKEFLAGS and the command line. 1323 */ 1324 static void 1325 main_Init(int argc, char **argv) 1326 { 1327 struct stat sa; 1328 const char *machine; 1329 const char *machine_arch; 1330 char *syspath = getenv("MAKESYSPATH"); 1331 struct utsname utsname; 1332 1333 /* default to writing debug to stderr */ 1334 opts.debug_file = stderr; 1335 1336 Str_Intern_Init(); 1337 HashTable_Init(&cached_realpaths); 1338 1339 #ifdef SIGINFO 1340 (void)bmake_signal(SIGINFO, siginfo); 1341 #endif 1342 1343 InitRandom(); 1344 1345 progname = str_basename(argv[0]); 1346 1347 UnlimitFiles(); 1348 1349 if (uname(&utsname) == -1) { 1350 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1351 strerror(errno)); 1352 exit(2); 1353 } 1354 1355 /* 1356 * Get the name of this type of MACHINE from utsname 1357 * so we can share an executable for similar machines. 1358 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1359 * 1360 * Note that both MACHINE and MACHINE_ARCH are decided at 1361 * run-time. 1362 */ 1363 machine = InitVarMachine(&utsname); 1364 machine_arch = InitVarMachineArch(); 1365 1366 myPid = getpid(); /* remember this for vFork() */ 1367 1368 /* 1369 * Just in case MAKEOBJDIR wants us to do something tricky. 1370 */ 1371 Targ_Init(); 1372 Var_Init(); 1373 Global_Set(".MAKE.OS", utsname.sysname); 1374 Global_Set("MACHINE", machine); 1375 Global_Set("MACHINE_ARCH", machine_arch); 1376 #ifdef MAKE_VERSION 1377 Global_Set("MAKE_VERSION", MAKE_VERSION); 1378 #endif 1379 Global_Set(".newline", "\n"); /* handy for :@ loops */ 1380 #ifndef MAKEFILE_PREFERENCE_LIST 1381 /* This is the traditional preference for makefiles. */ 1382 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1383 #endif 1384 Global_Set(MAKE_MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST); 1385 Global_Set(MAKE_DEPENDFILE, ".depend"); 1386 1387 CmdOpts_Init(); 1388 allPrecious = false; /* Remove targets when interrupted */ 1389 deleteOnError = false; /* Historical default behavior */ 1390 jobsRunning = false; 1391 1392 maxJobTokens = opts.maxJobs; 1393 ignorePWD = false; 1394 1395 /* 1396 * Initialize the parsing, directory and variable modules to prepare 1397 * for the reading of inclusion paths and variable settings on the 1398 * command line 1399 */ 1400 1401 /* 1402 * Initialize various variables. 1403 * MAKE also gets this name, for compatibility 1404 * .MAKEFLAGS gets set to the empty string just in case. 1405 * MFLAGS also gets initialized empty, for compatibility. 1406 */ 1407 Parse_Init(); 1408 InitVarMake(argv[0]); 1409 Global_Set(MAKEFLAGS, ""); 1410 Global_Set(MAKEOVERRIDES, ""); 1411 Global_Set("MFLAGS", ""); 1412 Global_Set(".ALLTARGETS", ""); 1413 Var_Set(SCOPE_CMDLINE, MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV); 1414 1415 /* Set some other useful variables. */ 1416 { 1417 char buf[64], *ep = getenv(MAKE_LEVEL_ENV); 1418 1419 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1420 if (makelevel < 0) 1421 makelevel = 0; 1422 snprintf(buf, sizeof buf, "%d", makelevel); 1423 Global_Set(MAKE_LEVEL, buf); 1424 snprintf(buf, sizeof buf, "%u", myPid); 1425 Global_Set(".MAKE.PID", buf); 1426 snprintf(buf, sizeof buf, "%u", getppid()); 1427 Global_Set(".MAKE.PPID", buf); 1428 snprintf(buf, sizeof buf, "%u", getuid()); 1429 Global_Set(".MAKE.UID", buf); 1430 snprintf(buf, sizeof buf, "%u", getgid()); 1431 Global_Set(".MAKE.GID", buf); 1432 } 1433 if (makelevel > 0) { 1434 char pn[1024]; 1435 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1436 progname = bmake_strdup(pn); 1437 } 1438 1439 #ifdef USE_META 1440 meta_init(); 1441 #endif 1442 Dir_Init(); 1443 1444 #ifdef POSIX 1445 { 1446 char *makeflags = explode(getenv("MAKEFLAGS")); 1447 Main_ParseArgLine(makeflags); 1448 free(makeflags); 1449 } 1450 #else 1451 /* 1452 * First snag any flags out of the MAKE environment variable. 1453 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1454 * in a different format). 1455 */ 1456 Main_ParseArgLine(getenv("MAKE")); 1457 #endif 1458 1459 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1460 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1461 progname, strerror(errno)); 1462 exit(2); 1463 } 1464 1465 MainParseArgs(argc, argv); 1466 1467 if (opts.enterFlag) 1468 printf("%s: Entering directory `%s'\n", progname, curdir); 1469 1470 if (stat(curdir, &sa) == -1) { 1471 (void)fprintf(stderr, "%s: %s: %s.\n", 1472 progname, curdir, strerror(errno)); 1473 exit(2); 1474 } 1475 1476 #ifndef NO_PWD_OVERRIDE 1477 HandlePWD(&sa); 1478 #endif 1479 Global_Set(".CURDIR", curdir); 1480 1481 InitObjdir(machine, machine_arch); 1482 1483 Arch_Init(); 1484 Suff_Init(); 1485 Trace_Init(tracefile); 1486 1487 defaultNode = NULL; 1488 (void)time(&now); 1489 1490 Trace_Log(MAKESTART, NULL); 1491 1492 InitVarTargets(); 1493 1494 InitDefSysIncPath(syspath); 1495 } 1496 1497 /* 1498 * Read the system makefile followed by either makefile, Makefile or the 1499 * files given by the -f option. Exit on parse errors. 1500 */ 1501 static void 1502 main_ReadFiles(void) 1503 { 1504 1505 if (!opts.noBuiltins) 1506 ReadBuiltinRules(); 1507 1508 posix_state = PS_MAYBE_NEXT_LINE; 1509 if (!Lst_IsEmpty(&opts.makefiles)) 1510 ReadAllMakefiles(&opts.makefiles); 1511 else 1512 ReadFirstDefaultMakefile(); 1513 } 1514 1515 /* Compute the dependency graph. */ 1516 static void 1517 main_PrepareMaking(void) 1518 { 1519 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1520 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1521 (void)Var_Subst("${.MAKE.DEPENDFILE}", 1522 SCOPE_CMDLINE, VARE_WANTRES, &makeDependfile); 1523 if (makeDependfile[0] != '\0') { 1524 /* TODO: handle errors */ 1525 doing_depend = true; 1526 (void)ReadMakefile(makeDependfile); 1527 doing_depend = false; 1528 } 1529 } 1530 1531 if (enterFlagObj) 1532 printf("%s: Entering directory `%s'\n", progname, objdir); 1533 1534 MakeMode(); 1535 1536 { 1537 FStr makeflags = Var_Value(SCOPE_GLOBAL, MAKEFLAGS); 1538 Global_Append("MFLAGS", makeflags.str); 1539 FStr_Done(&makeflags); 1540 } 1541 1542 InitMaxJobs(); 1543 1544 if (!opts.compatMake && !forceJobs) 1545 opts.compatMake = true; 1546 1547 if (!opts.compatMake) 1548 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1549 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1550 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1551 1552 if (opts.printVars == PVM_NONE) 1553 Main_ExportMAKEFLAGS(true); /* initial export */ 1554 1555 InitVpath(); 1556 1557 /* 1558 * Now that all search paths have been read for suffixes et al, it's 1559 * time to add the default search path to their lists... 1560 */ 1561 Suff_ExtendPaths(); 1562 1563 /* 1564 * Propagate attributes through :: dependency lists. 1565 */ 1566 Targ_Propagate(); 1567 1568 /* print the initial graph, if the user requested it */ 1569 if (DEBUG(GRAPH1)) 1570 Targ_PrintGraph(1); 1571 } 1572 1573 /* 1574 * Make the targets. 1575 * If the -v or -V options are given, print variables instead. 1576 * Return whether any of the targets is out-of-date. 1577 */ 1578 static bool 1579 main_Run(void) 1580 { 1581 if (opts.printVars != PVM_NONE) { 1582 /* print the values of any variables requested by the user */ 1583 doPrintVars(); 1584 return false; 1585 } else { 1586 return runTargets(); 1587 } 1588 } 1589 1590 /* Clean up after making the targets. */ 1591 static void 1592 main_CleanUp(void) 1593 { 1594 #ifdef CLEANUP 1595 Lst_DoneCall(&opts.variables, free); 1596 Lst_DoneCall(&opts.makefiles, free); 1597 Lst_DoneCall(&opts.create, free); 1598 #endif 1599 1600 if (DEBUG(GRAPH2)) 1601 Targ_PrintGraph(2); 1602 1603 Trace_Log(MAKEEND, NULL); 1604 1605 if (enterFlagObj) 1606 printf("%s: Leaving directory `%s'\n", progname, objdir); 1607 if (opts.enterFlag) 1608 printf("%s: Leaving directory `%s'\n", progname, curdir); 1609 1610 #ifdef USE_META 1611 meta_finish(); 1612 #endif 1613 Suff_End(); 1614 Targ_End(); 1615 Arch_End(); 1616 Var_End(); 1617 Parse_End(); 1618 Dir_End(); 1619 Job_End(); 1620 Trace_End(); 1621 Str_Intern_End(); 1622 } 1623 1624 /* Determine the exit code. */ 1625 static int 1626 main_Exit(bool outOfDate) 1627 { 1628 if (opts.strict && (main_errors > 0 || Parse_NumErrors() > 0)) 1629 return 2; /* Not 1 so -q can distinguish error */ 1630 return outOfDate ? 1 : 0; 1631 } 1632 1633 int 1634 main(int argc, char **argv) 1635 { 1636 bool outOfDate; 1637 1638 main_Init(argc, argv); 1639 main_ReadFiles(); 1640 main_PrepareMaking(); 1641 outOfDate = main_Run(); 1642 main_CleanUp(); 1643 return main_Exit(outOfDate); 1644 } 1645 1646 /* 1647 * Open and parse the given makefile, with all its side effects. 1648 * Return false if the file could not be opened. 1649 */ 1650 static bool 1651 ReadMakefile(const char *fname) 1652 { 1653 int fd; 1654 char *name, *path = NULL; 1655 1656 if (strcmp(fname, "-") == 0) { 1657 Parse_File("(stdin)", -1); 1658 Var_Set(SCOPE_INTERNAL, "MAKEFILE", ""); 1659 } else { 1660 /* if we've chdir'd, rebuild the path name */ 1661 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1662 path = str_concat3(curdir, "/", fname); 1663 fd = open(path, O_RDONLY); 1664 if (fd != -1) { 1665 fname = path; 1666 goto found; 1667 } 1668 free(path); 1669 1670 /* If curdir failed, try objdir (ala .depend) */ 1671 path = str_concat3(objdir, "/", fname); 1672 fd = open(path, O_RDONLY); 1673 if (fd != -1) { 1674 fname = path; 1675 goto found; 1676 } 1677 } else { 1678 fd = open(fname, O_RDONLY); 1679 if (fd != -1) 1680 goto found; 1681 } 1682 /* look in -I and system include directories. */ 1683 name = Dir_FindFile(fname, parseIncPath); 1684 if (name == NULL) { 1685 SearchPath *sysInc = Lst_IsEmpty(&sysIncPath->dirs) 1686 ? defSysIncPath : sysIncPath; 1687 name = Dir_FindFile(fname, sysInc); 1688 } 1689 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1690 free(name); 1691 free(path); 1692 return false; 1693 } 1694 fname = name; 1695 /* 1696 * set the MAKEFILE variable desired by System V fans -- the 1697 * placement of the setting here means it gets set to the last 1698 * makefile specified, as it is set by SysV make. 1699 */ 1700 found: 1701 if (!doing_depend) 1702 Var_Set(SCOPE_INTERNAL, "MAKEFILE", fname); 1703 Parse_File(fname, fd); 1704 } 1705 free(path); 1706 return true; 1707 } 1708 1709 /* 1710 * Execute the command in cmd, and return its output (only stdout, not 1711 * stderr, possibly empty). In the output, replace newlines with spaces. 1712 */ 1713 char * 1714 Cmd_Exec(const char *cmd, char **error) 1715 { 1716 const char *args[4]; /* Arguments for invoking the shell */ 1717 int pipefds[2]; 1718 int cpid; /* Child PID */ 1719 int pid; /* PID from wait() */ 1720 int status; /* command exit status */ 1721 Buffer buf; /* buffer to store the result */ 1722 ssize_t bytes_read; 1723 char *output; 1724 char *cp; 1725 int saved_errno; 1726 1727 if (shellName == NULL) 1728 Shell_Init(); 1729 1730 args[0] = shellName; 1731 args[1] = "-c"; 1732 args[2] = cmd; 1733 args[3] = NULL; 1734 DEBUG1(VAR, "Capturing the output of command \"%s\"\n", cmd); 1735 1736 if (pipe(pipefds) == -1) { 1737 *error = str_concat3( 1738 "Couldn't create pipe for \"", cmd, "\""); 1739 return bmake_strdup(""); 1740 } 1741 1742 Var_ReexportVars(); 1743 1744 switch (cpid = vfork()) { 1745 case 0: 1746 (void)close(pipefds[0]); 1747 (void)dup2(pipefds[1], STDOUT_FILENO); 1748 (void)close(pipefds[1]); 1749 1750 (void)execv(shellPath, UNCONST(args)); 1751 _exit(1); 1752 /* NOTREACHED */ 1753 1754 case -1: 1755 *error = str_concat3("Couldn't exec \"", cmd, "\""); 1756 return bmake_strdup(""); 1757 } 1758 1759 (void)close(pipefds[1]); /* No need for the writing half */ 1760 1761 saved_errno = 0; 1762 Buf_Init(&buf); 1763 1764 do { 1765 char result[BUFSIZ]; 1766 bytes_read = read(pipefds[0], result, sizeof result); 1767 if (bytes_read > 0) 1768 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1769 } while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1770 if (bytes_read == -1) 1771 saved_errno = errno; 1772 1773 (void)close(pipefds[0]); /* Close the input side of the pipe. */ 1774 1775 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1776 JobReapChild(pid, status, false); 1777 1778 if (Buf_EndsWith(&buf, '\n')) 1779 buf.data[buf.len - 1] = '\0'; 1780 1781 output = Buf_DoneData(&buf); 1782 for (cp = output; *cp != '\0'; cp++) 1783 if (*cp == '\n') 1784 *cp = ' '; 1785 1786 if (WIFSIGNALED(status)) 1787 *error = str_concat3("\"", cmd, "\" exited on a signal"); 1788 else if (WEXITSTATUS(status) != 0) 1789 *error = str_concat3( 1790 "\"", cmd, "\" returned non-zero status"); 1791 else if (saved_errno != 0) 1792 *error = str_concat3( 1793 "Couldn't read shell's output for \"", cmd, "\""); 1794 else 1795 *error = NULL; 1796 return output; 1797 } 1798 1799 /* 1800 * Print a printf-style error message. 1801 * 1802 * In default mode, this error message has no consequences, for compatibility 1803 * reasons, in particular it does not affect the exit status. Only in lint 1804 * mode (-dL) it does. 1805 */ 1806 void 1807 Error(const char *fmt, ...) 1808 { 1809 va_list ap; 1810 FILE *f; 1811 1812 f = opts.debug_file; 1813 if (f == stdout) 1814 f = stderr; 1815 (void)fflush(stdout); 1816 1817 for (;;) { 1818 fprintf(f, "%s: ", progname); 1819 va_start(ap, fmt); 1820 (void)vfprintf(f, fmt, ap); 1821 va_end(ap); 1822 (void)fprintf(f, "\n"); 1823 (void)fflush(f); 1824 if (f == stderr) 1825 break; 1826 f = stderr; 1827 } 1828 main_errors++; 1829 } 1830 1831 /* 1832 * Wait for any running jobs to finish, then produce an error message, 1833 * finally exit immediately. 1834 * 1835 * Exiting immediately differs from Parse_Error, which exits only after the 1836 * current top-level makefile has been parsed completely. 1837 */ 1838 void 1839 Fatal(const char *fmt, ...) 1840 { 1841 va_list ap; 1842 1843 if (jobsRunning) 1844 Job_Wait(); 1845 1846 (void)fflush(stdout); 1847 va_start(ap, fmt); 1848 (void)vfprintf(stderr, fmt, ap); 1849 va_end(ap); 1850 (void)fprintf(stderr, "\n"); 1851 (void)fflush(stderr); 1852 PrintStackTrace(true); 1853 1854 PrintOnError(NULL, "\n"); 1855 1856 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1857 Targ_PrintGraph(2); 1858 Trace_Log(MAKEERROR, NULL); 1859 exit(2); /* Not 1 so -q can distinguish error */ 1860 } 1861 1862 /* 1863 * Major exception once jobs are being created. 1864 * Kills all jobs, prints a message and exits. 1865 */ 1866 void 1867 Punt(const char *fmt, ...) 1868 { 1869 va_list ap; 1870 1871 (void)fflush(stdout); 1872 (void)fprintf(stderr, "%s: ", progname); 1873 va_start(ap, fmt); 1874 (void)vfprintf(stderr, fmt, ap); 1875 va_end(ap); 1876 (void)fprintf(stderr, "\n"); 1877 (void)fflush(stderr); 1878 1879 PrintOnError(NULL, "\n"); 1880 1881 DieHorribly(); 1882 } 1883 1884 /* Exit without giving a message. */ 1885 void 1886 DieHorribly(void) 1887 { 1888 if (jobsRunning) 1889 Job_AbortAll(); 1890 if (DEBUG(GRAPH2)) 1891 Targ_PrintGraph(2); 1892 Trace_Log(MAKEERROR, NULL); 1893 exit(2); /* Not 1 so -q can distinguish error */ 1894 } 1895 1896 /* 1897 * Called when aborting due to errors in child shell to signal abnormal exit. 1898 * The program exits. 1899 * Errors is the number of errors encountered in Make_Make. 1900 */ 1901 void 1902 Finish(int errs) 1903 { 1904 if (shouldDieQuietly(NULL, -1)) 1905 exit(2); 1906 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1907 } 1908 1909 bool 1910 unlink_file(const char *file) 1911 { 1912 struct stat st; 1913 1914 if (lstat(file, &st) == -1) 1915 return false; 1916 1917 if (S_ISDIR(st.st_mode)) { 1918 errno = EISDIR; 1919 return false; 1920 } 1921 return unlink(file) == 0; 1922 } 1923 1924 static void 1925 write_all(int fd, const void *data, size_t n) 1926 { 1927 const char *mem = data; 1928 1929 while (n > 0) { 1930 ssize_t written = write(fd, mem, n); 1931 /* XXX: Should this EAGAIN be EINTR? */ 1932 if (written == -1 && errno == EAGAIN) 1933 continue; 1934 if (written == -1) 1935 break; 1936 mem += written; 1937 n -= (size_t)written; 1938 } 1939 } 1940 1941 /* Print why exec failed, avoiding stdio. */ 1942 void MAKE_ATTR_DEAD 1943 execDie(const char *af, const char *av) 1944 { 1945 Buffer buf; 1946 1947 Buf_Init(&buf); 1948 Buf_AddStr(&buf, progname); 1949 Buf_AddStr(&buf, ": "); 1950 Buf_AddStr(&buf, af); 1951 Buf_AddStr(&buf, "("); 1952 Buf_AddStr(&buf, av); 1953 Buf_AddStr(&buf, ") failed ("); 1954 Buf_AddStr(&buf, strerror(errno)); 1955 Buf_AddStr(&buf, ")\n"); 1956 1957 write_all(STDERR_FILENO, buf.data, buf.len); 1958 1959 Buf_Done(&buf); 1960 _exit(1); 1961 } 1962 1963 static void 1964 purge_relative_cached_realpaths(void) 1965 { 1966 HashEntry *he, *nhe; 1967 HashIter hi; 1968 1969 HashIter_Init(&hi, &cached_realpaths); 1970 he = HashIter_Next(&hi); 1971 while (he != NULL) { 1972 nhe = HashIter_Next(&hi); 1973 if (he->key[0] != '/') { 1974 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key); 1975 HashTable_DeleteEntry(&cached_realpaths, he); 1976 /* 1977 * XXX: What about the allocated he->value? Either 1978 * free them or document why they cannot be freed. 1979 */ 1980 } 1981 he = nhe; 1982 } 1983 } 1984 1985 const char * 1986 cached_realpath(const char *pathname, char *resolved) 1987 { 1988 const char *rp; 1989 1990 if (pathname == NULL || pathname[0] == '\0') 1991 return NULL; 1992 1993 rp = HashTable_FindValue(&cached_realpaths, pathname); 1994 if (rp != NULL) { 1995 /* a hit */ 1996 strncpy(resolved, rp, MAXPATHLEN); 1997 resolved[MAXPATHLEN - 1] = '\0'; 1998 return resolved; 1999 } 2000 2001 rp = realpath(pathname, resolved); 2002 if (rp != NULL) { 2003 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp)); 2004 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp); 2005 return resolved; 2006 } 2007 2008 /* should we negative-cache? */ 2009 return NULL; 2010 } 2011 2012 /* 2013 * Return true if we should die without noise. 2014 * For example our failing child was a sub-make or failure happened elsewhere. 2015 */ 2016 bool 2017 shouldDieQuietly(GNode *gn, int bf) 2018 { 2019 static int quietly = -1; 2020 2021 if (quietly < 0) { 2022 if (DEBUG(JOB) || 2023 !GetBooleanExpr("${.MAKE.DIE_QUIETLY}", true)) 2024 quietly = 0; 2025 else if (bf >= 0) 2026 quietly = bf; 2027 else 2028 quietly = (gn != NULL && (gn->type & OP_MAKE)) ? 1 : 0; 2029 } 2030 return quietly != 0; 2031 } 2032 2033 static void 2034 SetErrorVars(GNode *gn) 2035 { 2036 StringListNode *ln; 2037 2038 /* 2039 * We can print this even if there is no .ERROR target. 2040 */ 2041 Global_Set(".ERROR_TARGET", gn->name); 2042 Global_Delete(".ERROR_CMD"); 2043 2044 for (ln = gn->commands.first; ln != NULL; ln = ln->next) { 2045 const char *cmd = ln->datum; 2046 2047 if (cmd == NULL) 2048 break; 2049 Global_Append(".ERROR_CMD", cmd); 2050 } 2051 } 2052 2053 /* 2054 * Print some helpful information in case of an error. 2055 * The caller should exit soon after calling this function. 2056 */ 2057 void 2058 PrintOnError(GNode *gn, const char *msg) 2059 { 2060 static GNode *errorNode = NULL; 2061 2062 if (DEBUG(HASH)) { 2063 Targ_Stats(); 2064 Var_Stats(); 2065 } 2066 2067 if (errorNode != NULL) 2068 return; /* we've been here! */ 2069 2070 printf("%s%s: stopped in %s\n", msg, progname, curdir); 2071 2072 /* we generally want to keep quiet if a sub-make died */ 2073 if (shouldDieQuietly(gn, -1)) 2074 return; 2075 2076 if (gn != NULL) 2077 SetErrorVars(gn); 2078 2079 { 2080 char *errorVarsValues; 2081 (void)Var_Subst("${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2082 SCOPE_GLOBAL, VARE_WANTRES, &errorVarsValues); 2083 /* TODO: handle errors */ 2084 printf("%s", errorVarsValues); 2085 free(errorVarsValues); 2086 } 2087 2088 fflush(stdout); 2089 2090 /* 2091 * Finally, see if there is a .ERROR target, and run it if so. 2092 */ 2093 errorNode = Targ_FindNode(".ERROR"); 2094 if (errorNode != NULL) { 2095 errorNode->type |= OP_SPECIAL; 2096 Compat_Make(errorNode, errorNode); 2097 } 2098 } 2099 2100 void 2101 Main_ExportMAKEFLAGS(bool first) 2102 { 2103 static bool once = true; 2104 char *flags; 2105 2106 if (once != first) 2107 return; 2108 once = false; 2109 2110 (void)Var_Subst( 2111 "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2112 SCOPE_CMDLINE, VARE_WANTRES, &flags); 2113 /* TODO: handle errors */ 2114 if (flags[0] != '\0') { 2115 #ifdef POSIX 2116 setenv("MAKEFLAGS", flags, 1); 2117 #else 2118 setenv("MAKE", flags, 1); 2119 #endif 2120 } 2121 } 2122 2123 char * 2124 getTmpdir(void) 2125 { 2126 static char *tmpdir = NULL; 2127 struct stat st; 2128 2129 if (tmpdir != NULL) 2130 return tmpdir; 2131 2132 /* Honor $TMPDIR if it is valid, strip a trailing '/'. */ 2133 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP ":S,/$,,W}/", 2134 SCOPE_GLOBAL, VARE_WANTRES, &tmpdir); 2135 /* TODO: handle errors */ 2136 2137 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2138 free(tmpdir); 2139 tmpdir = bmake_strdup(_PATH_TMP); 2140 } 2141 return tmpdir; 2142 } 2143 2144 /* 2145 * Create and open a temp file using "pattern". 2146 * If out_fname is provided, set it to a copy of the filename created. 2147 * Otherwise unlink the file once open. 2148 */ 2149 int 2150 mkTempFile(const char *pattern, char *tfile, size_t tfile_sz) 2151 { 2152 static char *tmpdir = NULL; 2153 char tbuf[MAXPATHLEN]; 2154 int fd; 2155 2156 if (pattern == NULL) 2157 pattern = TMPPAT; 2158 if (tmpdir == NULL) 2159 tmpdir = getTmpdir(); 2160 if (tfile == NULL) { 2161 tfile = tbuf; 2162 tfile_sz = sizeof tbuf; 2163 } 2164 2165 if (pattern[0] == '/') 2166 snprintf(tfile, tfile_sz, "%s", pattern); 2167 else 2168 snprintf(tfile, tfile_sz, "%s%s", tmpdir, pattern); 2169 2170 if ((fd = mkstemp(tfile)) < 0) 2171 Punt("Could not create temporary file %s: %s", tfile, 2172 strerror(errno)); 2173 if (tfile == tbuf) 2174 unlink(tfile); /* we just want the descriptor */ 2175 2176 return fd; 2177 } 2178 2179 /* 2180 * Convert a string representation of a boolean into a boolean value. 2181 * Anything that looks like "No", "False", "Off", "0" etc. is false, 2182 * the empty string is the fallback, everything else is true. 2183 */ 2184 bool 2185 ParseBoolean(const char *s, bool fallback) 2186 { 2187 char ch = ch_tolower(s[0]); 2188 if (ch == '\0') 2189 return fallback; 2190 if (ch == '0' || ch == 'f' || ch == 'n') 2191 return false; 2192 if (ch == 'o') 2193 return ch_tolower(s[1]) != 'f'; 2194 return true; 2195 } 2196