main.c revision 1.358
1 /* $NetBSD: main.c,v 1.358 2020/10/01 23:28:01 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 * main.c -- 73 * The main file for this entire program. Exit routines etc 74 * reside here. 75 * 76 * Utility functions defined in this file: 77 * Main_ParseArgLine Takes a line of arguments, breaks them and 78 * treats them as if they were given when first 79 * invoked. Used by the parse module to implement 80 * the .MFLAGS target. 81 * 82 * Error Print a tagged error message. The global 83 * MAKE variable must have been defined. This 84 * takes a format string and optional arguments 85 * for it. 86 * 87 * Fatal Print an error message and exit. Also takes 88 * a format string and arguments for it. 89 * 90 * Punt Aborts all jobs and exits with a message. Also 91 * takes a format string and arguments for it. 92 * 93 * Finish Finish things up by printing the number of 94 * errors which occurred, as passed to it, and 95 * exiting. 96 */ 97 98 #include <sys/types.h> 99 #include <sys/time.h> 100 #include <sys/param.h> 101 #include <sys/resource.h> 102 #include <sys/stat.h> 103 #ifdef MAKE_NATIVE 104 #include <sys/sysctl.h> 105 #endif 106 #include <sys/utsname.h> 107 #include <sys/wait.h> 108 109 #include <ctype.h> 110 #include <errno.h> 111 #include <signal.h> 112 #include <stdarg.h> 113 #include <stdio.h> 114 #include <stdlib.h> 115 #include <time.h> 116 117 #include "make.h" 118 #include "hash.h" 119 #include "dir.h" 120 #include "job.h" 121 #include "pathnames.h" 122 #include "trace.h" 123 124 #ifdef USE_IOVEC 125 #include <sys/uio.h> 126 #endif 127 128 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 129 MAKE_RCSID("$NetBSD: main.c,v 1.358 2020/10/01 23:28:01 rillig Exp $"); 130 #if defined(MAKE_NATIVE) && !defined(lint) 131 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 132 The Regents of the University of California. All rights reserved."); 133 #endif 134 135 #ifndef DEFMAXLOCAL 136 #define DEFMAXLOCAL DEFMAXJOBS 137 #endif 138 139 StringList * create; /* Targets to be made */ 140 time_t now; /* Time at start of make */ 141 GNode *DEFAULT; /* .DEFAULT node */ 142 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 143 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 144 145 static Boolean noBuiltins; /* -r flag */ 146 static StringList * makefiles; /* ordered list of makefiles to read */ 147 static int printVars; /* -[vV] argument */ 148 #define COMPAT_VARS 1 149 #define EXPAND_VARS 2 150 static StringList * variables; /* list of variables to print 151 * (for -v and -V) */ 152 int maxJobs; /* -j argument */ 153 static int maxJobTokens; /* -j argument */ 154 Boolean compatMake; /* -B argument */ 155 int debug; /* -d argument */ 156 Boolean debugVflag; /* -dV */ 157 Boolean noExecute; /* -n flag */ 158 Boolean noRecursiveExecute; /* -N flag */ 159 Boolean keepgoing; /* -k flag */ 160 Boolean queryFlag; /* -q flag */ 161 Boolean touchFlag; /* -t flag */ 162 Boolean enterFlag; /* -w flag */ 163 Boolean enterFlagObj; /* -w and objdir != srcdir */ 164 Boolean ignoreErrors; /* -i flag */ 165 Boolean beSilent; /* -s flag */ 166 Boolean oldVars; /* variable substitution style */ 167 Boolean checkEnvFirst; /* -e flag */ 168 Boolean parseWarnFatal; /* -W flag */ 169 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 170 Boolean varNoExportEnv; /* -X flag */ 171 Boolean doing_depend; /* Set while reading .depend */ 172 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 173 static const char * tracefile; 174 static int ReadMakefile(const char *); 175 static void usage(void) MAKE_ATTR_DEAD; 176 static void purge_cached_realpaths(void); 177 178 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 179 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 180 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 181 char *progname; /* the program name */ 182 char *makeDependfile; 183 pid_t myPid; 184 int makelevel; 185 186 FILE *debug_file; 187 188 Boolean forceJobs = FALSE; 189 190 extern SearchPath *parseIncPath; 191 192 /* 193 * For compatibility with the POSIX version of MAKEFLAGS that includes 194 * all the options with out -, convert flags to -f -l -a -g -s. 195 */ 196 static char * 197 explode(const char *flags) 198 { 199 size_t len; 200 char *nf, *st; 201 const char *f; 202 203 if (flags == NULL) 204 return NULL; 205 206 for (f = flags; *f; f++) 207 if (!ch_isalpha(*f)) 208 break; 209 210 if (*f) 211 return bmake_strdup(flags); 212 213 len = strlen(flags); 214 st = nf = bmake_malloc(len * 3 + 1); 215 while (*flags) { 216 *nf++ = '-'; 217 *nf++ = *flags++; 218 *nf++ = ' '; 219 } 220 *nf = '\0'; 221 return st; 222 } 223 224 static void 225 parse_debug_option_F(const char *modules) 226 { 227 const char *mode; 228 size_t len; 229 char *fname; 230 231 if (debug_file != stdout && debug_file != stderr) 232 fclose(debug_file); 233 234 if (*modules == '+') { 235 modules++; 236 mode = "a"; 237 } else 238 mode = "w"; 239 240 if (strcmp(modules, "stdout") == 0) { 241 debug_file = stdout; 242 return; 243 } 244 if (strcmp(modules, "stderr") == 0) { 245 debug_file = stderr; 246 return; 247 } 248 249 len = strlen(modules); 250 fname = bmake_malloc(len + 20); 251 memcpy(fname, modules, len + 1); 252 253 /* Let the filename be modified by the pid */ 254 if (strcmp(fname + len - 3, ".%d") == 0) 255 snprintf(fname + len - 2, 20, "%d", getpid()); 256 257 debug_file = fopen(fname, mode); 258 if (!debug_file) { 259 fprintf(stderr, "Cannot open debug file %s\n", 260 fname); 261 usage(); 262 } 263 free(fname); 264 } 265 266 static void 267 parse_debug_options(const char *argvalue) 268 { 269 const char *modules; 270 271 for (modules = argvalue; *modules; ++modules) { 272 switch (*modules) { 273 case 'A': 274 debug = ~(0|DEBUG_LINT); 275 break; 276 case 'a': 277 debug |= DEBUG_ARCH; 278 break; 279 case 'C': 280 debug |= DEBUG_CWD; 281 break; 282 case 'c': 283 debug |= DEBUG_COND; 284 break; 285 case 'd': 286 debug |= DEBUG_DIR; 287 break; 288 case 'e': 289 debug |= DEBUG_ERROR; 290 break; 291 case 'f': 292 debug |= DEBUG_FOR; 293 break; 294 case 'g': 295 if (modules[1] == '1') { 296 debug |= DEBUG_GRAPH1; 297 ++modules; 298 } 299 else if (modules[1] == '2') { 300 debug |= DEBUG_GRAPH2; 301 ++modules; 302 } 303 else if (modules[1] == '3') { 304 debug |= DEBUG_GRAPH3; 305 ++modules; 306 } 307 break; 308 case 'h': 309 debug |= DEBUG_HASH; 310 break; 311 case 'j': 312 debug |= DEBUG_JOB; 313 break; 314 case 'L': 315 debug |= DEBUG_LINT; 316 break; 317 case 'l': 318 debug |= DEBUG_LOUD; 319 break; 320 case 'M': 321 debug |= DEBUG_META; 322 break; 323 case 'm': 324 debug |= DEBUG_MAKE; 325 break; 326 case 'n': 327 debug |= DEBUG_SCRIPT; 328 break; 329 case 'p': 330 debug |= DEBUG_PARSE; 331 break; 332 case 's': 333 debug |= DEBUG_SUFF; 334 break; 335 case 't': 336 debug |= DEBUG_TARG; 337 break; 338 case 'V': 339 debugVflag = TRUE; 340 break; 341 case 'v': 342 debug |= DEBUG_VAR; 343 break; 344 case 'x': 345 debug |= DEBUG_SHELL; 346 break; 347 case 'F': 348 parse_debug_option_F(modules + 1); 349 goto debug_setbuf; 350 default: 351 (void)fprintf(stderr, 352 "%s: illegal argument to d option -- %c\n", 353 progname, *modules); 354 usage(); 355 } 356 } 357 debug_setbuf: 358 /* 359 * Make the debug_file unbuffered, and make 360 * stdout line buffered (unless debugfile == stdout). 361 */ 362 setvbuf(debug_file, NULL, _IONBF, 0); 363 if (debug_file != stdout) { 364 setvbuf(stdout, NULL, _IOLBF, 0); 365 } 366 } 367 368 /* 369 * does path contain any relative components 370 */ 371 static Boolean 372 is_relpath(const char *path) 373 { 374 const char *cp; 375 376 if (path[0] != '/') 377 return TRUE; 378 cp = path; 379 while ((cp = strstr(cp, "/.")) != NULL) { 380 cp += 2; 381 if (cp[0] == '/' || cp[0] == '\0') 382 return TRUE; 383 else if (cp[0] == '.') { 384 if (cp[1] == '/' || cp[1] == '\0') 385 return TRUE; 386 } 387 } 388 return FALSE; 389 } 390 391 static void 392 MainParseArgChdir(const char *argvalue) 393 { 394 struct stat sa, sb; 395 396 if (chdir(argvalue) == -1) { 397 (void)fprintf(stderr, "%s: chdir %s: %s\n", 398 progname, argvalue, strerror(errno)); 399 exit(1); 400 } 401 if (getcwd(curdir, MAXPATHLEN) == NULL) { 402 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 403 exit(2); 404 } 405 if (!is_relpath(argvalue) && 406 stat(argvalue, &sa) != -1 && 407 stat(curdir, &sb) != -1 && 408 sa.st_ino == sb.st_ino && 409 sa.st_dev == sb.st_dev) 410 strncpy(curdir, argvalue, MAXPATHLEN); 411 ignorePWD = TRUE; 412 } 413 414 static void 415 MainParseArgJobsInternal(const char *argvalue) 416 { 417 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 418 (void)fprintf(stderr, 419 "%s: internal error -- J option malformed (%s)\n", 420 progname, argvalue); 421 usage(); 422 } 423 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 424 (fcntl(jp_1, F_GETFD, 0) < 0)) { 425 #if 0 426 (void)fprintf(stderr, 427 "%s: ###### warning -- J descriptors were closed!\n", 428 progname); 429 exit(2); 430 #endif 431 jp_0 = -1; 432 jp_1 = -1; 433 compatMake = TRUE; 434 } else { 435 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 436 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 437 } 438 } 439 440 static void 441 MainParseArgJobs(const char *argvalue) 442 { 443 char *p; 444 445 forceJobs = TRUE; 446 maxJobs = strtol(argvalue, &p, 0); 447 if (*p != '\0' || maxJobs < 1) { 448 (void)fprintf(stderr, 449 "%s: illegal argument to -j -- must be positive integer!\n", 450 progname); 451 exit(1); /* XXX: why not 2? */ 452 } 453 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 454 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 455 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 456 maxJobTokens = maxJobs; 457 } 458 459 static void 460 MainParseArgSysInc(const char *argvalue) 461 { 462 char found_path[MAXPATHLEN + 1]; 463 464 /* look for magic parent directory search string */ 465 if (strncmp(".../", argvalue, 4) == 0) { 466 if (!Dir_FindHereOrAbove(curdir, argvalue + 4, 467 found_path, sizeof(found_path))) 468 return; 469 (void)Dir_AddDir(sysIncPath, found_path); 470 } else { 471 (void)Dir_AddDir(sysIncPath, argvalue); 472 } 473 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 474 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 475 } 476 477 static Boolean 478 MainParseArg(char c, char *argvalue) 479 { 480 switch (c) { 481 case '\0': 482 break; 483 case 'B': 484 compatMake = TRUE; 485 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 486 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 487 break; 488 case 'C': 489 MainParseArgChdir(argvalue); 490 break; 491 case 'D': 492 if (argvalue == NULL || argvalue[0] == 0) return FALSE; 493 Var_Set(argvalue, "1", VAR_GLOBAL); 494 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 495 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 496 break; 497 case 'I': 498 if (argvalue == NULL) return FALSE; 499 Parse_AddIncludeDir(argvalue); 500 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 501 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 502 break; 503 case 'J': 504 if (argvalue == NULL) return FALSE; 505 MainParseArgJobsInternal(argvalue); 506 break; 507 case 'N': 508 noExecute = TRUE; 509 noRecursiveExecute = TRUE; 510 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 511 break; 512 case 'S': 513 keepgoing = FALSE; 514 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 515 break; 516 case 'T': 517 if (argvalue == NULL) return FALSE; 518 tracefile = bmake_strdup(argvalue); 519 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 520 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 521 break; 522 case 'V': 523 case 'v': 524 if (argvalue == NULL) return FALSE; 525 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 526 Lst_Append(variables, bmake_strdup(argvalue)); 527 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 528 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 529 break; 530 case 'W': 531 parseWarnFatal = TRUE; 532 break; 533 case 'X': 534 varNoExportEnv = TRUE; 535 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 536 break; 537 case 'd': 538 if (argvalue == NULL) return FALSE; 539 /* If '-d-opts' don't pass to children */ 540 if (argvalue[0] == '-') 541 argvalue++; 542 else { 543 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 544 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 545 } 546 parse_debug_options(argvalue); 547 break; 548 case 'e': 549 checkEnvFirst = TRUE; 550 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 551 break; 552 case 'f': 553 if (argvalue == NULL) return FALSE; 554 Lst_Append(makefiles, bmake_strdup(argvalue)); 555 break; 556 case 'i': 557 ignoreErrors = TRUE; 558 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 559 break; 560 case 'j': 561 if (argvalue == NULL) return FALSE; 562 MainParseArgJobs(argvalue); 563 break; 564 case 'k': 565 keepgoing = TRUE; 566 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 567 break; 568 case 'm': 569 if (argvalue == NULL) return FALSE; 570 MainParseArgSysInc(argvalue); 571 break; 572 case 'n': 573 noExecute = TRUE; 574 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 575 break; 576 case 'q': 577 queryFlag = TRUE; 578 /* Kind of nonsensical, wot? */ 579 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 580 break; 581 case 'r': 582 noBuiltins = TRUE; 583 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 584 break; 585 case 's': 586 beSilent = TRUE; 587 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 588 break; 589 case 't': 590 touchFlag = TRUE; 591 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 592 break; 593 case 'w': 594 enterFlag = TRUE; 595 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 596 break; 597 default: 598 case '?': 599 usage(); 600 } 601 return TRUE; 602 } 603 604 /* Parse the given arguments. Called from main() and from 605 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 606 * 607 * The arguments must be treated as read-only and will be freed after the 608 * call. 609 * 610 * XXX: Deal with command line overriding .MAKEFLAGS in makefile */ 611 static void 612 MainParseArgs(int argc, char **argv) 613 { 614 char c = '?'; 615 int arginc; 616 char *argvalue; 617 const char *getopt_def; 618 char *optscan; 619 Boolean inOption, dashDash = FALSE; 620 621 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w" 622 /* Can't actually use getopt(3) because rescanning is not portable */ 623 624 getopt_def = OPTFLAGS; 625 rearg: 626 inOption = FALSE; 627 optscan = NULL; 628 while (argc > 1) { 629 char *getopt_spec; 630 if (!inOption) 631 optscan = argv[1]; 632 c = *optscan++; 633 arginc = 0; 634 if (inOption) { 635 if (c == '\0') { 636 ++argv; 637 --argc; 638 inOption = FALSE; 639 continue; 640 } 641 } else { 642 if (c != '-' || dashDash) 643 break; 644 inOption = TRUE; 645 c = *optscan++; 646 } 647 /* '-' found at some earlier point */ 648 getopt_spec = strchr(getopt_def, c); 649 if (c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 650 /* -<something> found, and <something> should have an arg */ 651 inOption = FALSE; 652 arginc = 1; 653 argvalue = optscan; 654 if (*argvalue == '\0') { 655 if (argc < 3) 656 goto noarg; 657 argvalue = argv[2]; 658 arginc = 2; 659 } 660 } else { 661 argvalue = NULL; 662 } 663 switch (c) { 664 case '\0': 665 arginc = 1; 666 inOption = FALSE; 667 break; 668 case '-': 669 dashDash = TRUE; 670 break; 671 default: 672 if (!MainParseArg(c, argvalue)) 673 goto noarg; 674 } 675 argv += arginc; 676 argc -= arginc; 677 } 678 679 oldVars = TRUE; 680 681 /* 682 * See if the rest of the arguments are variable assignments and 683 * perform them if so. Else take them to be targets and stuff them 684 * on the end of the "create" list. 685 */ 686 for (; argc > 1; ++argv, --argc) 687 if (Parse_IsVar(argv[1])) { 688 Parse_DoVar(argv[1], VAR_CMD); 689 } else { 690 if (!*argv[1]) 691 Punt("illegal (null) argument."); 692 if (*argv[1] == '-' && !dashDash) 693 goto rearg; 694 Lst_Append(create, bmake_strdup(argv[1])); 695 } 696 697 return; 698 noarg: 699 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 700 progname, c); 701 usage(); 702 } 703 704 /*- 705 * Main_ParseArgLine -- 706 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 707 * is encountered and by main() when reading the .MAKEFLAGS envariable. 708 * Takes a line of arguments and breaks it into its 709 * component words and passes those words and the number of them to the 710 * MainParseArgs function. 711 * The line should have all its leading whitespace removed. 712 * 713 * Input: 714 * line Line to fracture 715 * 716 * Results: 717 * None 718 * 719 * Side Effects: 720 * Only those that come from the various arguments. 721 */ 722 void 723 Main_ParseArgLine(const char *line) 724 { 725 Words words; 726 char *p1; 727 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 728 char *buf; 729 730 if (line == NULL) 731 return; 732 for (; *line == ' '; ++line) 733 continue; 734 if (!*line) 735 return; 736 737 buf = str_concat3(argv0, " ", line); 738 free(p1); 739 740 words = Str_Words(buf, TRUE); 741 if (words.words == NULL) { 742 Error("Unterminated quoted string [%s]", buf); 743 free(buf); 744 return; 745 } 746 free(buf); 747 MainParseArgs((int)words.len, words.words); 748 749 Words_Free(words); 750 } 751 752 Boolean 753 Main_SetObjdir(const char *fmt, ...) 754 { 755 struct stat sb; 756 char *path; 757 char buf[MAXPATHLEN + 1]; 758 char buf2[MAXPATHLEN + 1]; 759 Boolean rc = FALSE; 760 va_list ap; 761 762 va_start(ap, fmt); 763 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 764 va_end(ap); 765 766 if (path[0] != '/') { 767 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 768 path = buf2; 769 } 770 771 /* look for the directory and try to chdir there */ 772 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 773 if (chdir(path)) { 774 (void)fprintf(stderr, "make warning: %s: %s.\n", 775 path, strerror(errno)); 776 } else { 777 snprintf(objdir, sizeof objdir, "%s", path); 778 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 779 setenv("PWD", objdir, 1); 780 Dir_InitDot(); 781 purge_cached_realpaths(); 782 rc = TRUE; 783 if (enterFlag && strcmp(objdir, curdir) != 0) 784 enterFlagObj = TRUE; 785 } 786 } 787 788 return rc; 789 } 790 791 static Boolean 792 Main_SetVarObjdir(const char *var, const char *suffix) 793 { 794 char *path_freeIt; 795 const char *path = Var_Value(var, VAR_CMD, &path_freeIt); 796 const char *xpath; 797 char *xpath_freeIt; 798 799 if (path == NULL || path[0] == '\0') { 800 bmake_free(path_freeIt); 801 return FALSE; 802 } 803 804 /* expand variable substitutions */ 805 xpath = path; 806 xpath_freeIt = NULL; 807 if (strchr(path, '$') != 0) { 808 (void)Var_Subst(path, VAR_GLOBAL, VARE_WANTRES, &xpath_freeIt); 809 /* TODO: handle errors */ 810 xpath = xpath_freeIt; 811 } 812 813 (void)Main_SetObjdir("%s%s", xpath, suffix); 814 815 bmake_free(xpath_freeIt); 816 bmake_free(path_freeIt); 817 return TRUE; 818 } 819 820 /* Read and parse the makefile. 821 * Return TRUE if reading the makefile succeeded, for Lst_Find. */ 822 static Boolean 823 ReadMakefileSucceeded(const void *fname, const void *unused) 824 { 825 return ReadMakefile(fname) == 0; 826 } 827 828 /* Read and parse the makefile. 829 * Return TRUE if reading the makefile failed, for Lst_Find. */ 830 static Boolean 831 ReadMakefileFailed(const void *fname, const void *unused) 832 { 833 return ReadMakefile(fname) != 0; 834 } 835 836 int 837 str2Lst_Append(StringList *lp, char *str, const char *sep) 838 { 839 char *cp; 840 int n; 841 842 if (!sep) 843 sep = " \t"; 844 845 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 846 Lst_Append(lp, cp); 847 n++; 848 } 849 return n; 850 } 851 852 #ifdef SIGINFO 853 /*ARGSUSED*/ 854 static void 855 siginfo(int signo MAKE_ATTR_UNUSED) 856 { 857 char dir[MAXPATHLEN]; 858 char str[2 * MAXPATHLEN]; 859 int len; 860 if (getcwd(dir, sizeof(dir)) == NULL) 861 return; 862 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 863 if (len > 0) 864 (void)write(STDERR_FILENO, str, (size_t)len); 865 } 866 #endif 867 868 /* 869 * Allow makefiles some control over the mode we run in. 870 */ 871 void 872 MakeMode(const char *mode) 873 { 874 char *mode_freeIt = NULL; 875 876 if (mode == NULL) { 877 (void)Var_Subst("${" MAKE_MODE ":tl}", 878 VAR_GLOBAL, VARE_WANTRES, &mode_freeIt); 879 /* TODO: handle errors */ 880 mode = mode_freeIt; 881 } 882 883 if (mode[0] != '\0') { 884 if (strstr(mode, "compat")) { 885 compatMake = TRUE; 886 forceJobs = FALSE; 887 } 888 #if USE_META 889 if (strstr(mode, "meta")) 890 meta_mode_init(mode); 891 #endif 892 } 893 894 free(mode_freeIt); 895 } 896 897 static void 898 doPrintVars(void) 899 { 900 StringListNode *ln; 901 Boolean expandVars; 902 903 if (printVars == EXPAND_VARS) 904 expandVars = TRUE; 905 else if (debugVflag) 906 expandVars = FALSE; 907 else 908 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 909 910 for (ln = variables->first; ln != NULL; ln = ln->next) { 911 const char *var = ln->datum; 912 const char *value; 913 char *p1; 914 915 if (strchr(var, '$')) { 916 (void)Var_Subst(var, VAR_GLOBAL, VARE_WANTRES, &p1); 917 /* TODO: handle errors */ 918 value = p1; 919 } else if (expandVars) { 920 char *expr = str_concat3("${", var, "}"); 921 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &p1); 922 /* TODO: handle errors */ 923 value = p1; 924 free(expr); 925 } else { 926 value = Var_Value(var, VAR_GLOBAL, &p1); 927 } 928 printf("%s\n", value ? value : ""); 929 bmake_free(p1); 930 } 931 } 932 933 static Boolean 934 runTargets(void) 935 { 936 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 937 Boolean outOfDate; /* FALSE if all targets up to date */ 938 939 /* 940 * Have now read the entire graph and need to make a list of 941 * targets to create. If none was given on the command line, 942 * we consult the parsing module to find the main target(s) 943 * to create. 944 */ 945 if (Lst_IsEmpty(create)) 946 targs = Parse_MainName(); 947 else 948 targs = Targ_FindList(create); 949 950 if (!compatMake) { 951 /* 952 * Initialize job module before traversing the graph 953 * now that any .BEGIN and .END targets have been read. 954 * This is done only if the -q flag wasn't given 955 * (to prevent the .BEGIN from being executed should 956 * it exist). 957 */ 958 if (!queryFlag) { 959 Job_Init(); 960 jobsRunning = TRUE; 961 } 962 963 /* Traverse the graph, checking on all the targets */ 964 outOfDate = Make_Run(targs); 965 } else { 966 /* 967 * Compat_Init will take care of creating all the 968 * targets as well as initializing the module. 969 */ 970 Compat_Run(targs); 971 outOfDate = FALSE; 972 } 973 Lst_Free(targs); 974 return outOfDate; 975 } 976 977 /* 978 * Set up the .TARGETS variable to contain the list of targets to be 979 * created. If none specified, make the variable empty -- the parser 980 * will fill the thing in with the default or .MAIN target. 981 */ 982 static void 983 InitVarTargets(void) 984 { 985 StringListNode *ln; 986 987 if (Lst_IsEmpty(create)) { 988 Var_Set(".TARGETS", "", VAR_GLOBAL); 989 return; 990 } 991 992 for (ln = create->first; ln != NULL; ln = ln->next) { 993 char *name = ln->datum; 994 Var_Append(".TARGETS", name, VAR_GLOBAL); 995 } 996 } 997 998 /*- 999 * main -- 1000 * The main function, for obvious reasons. Initializes variables 1001 * and a few modules, then parses the arguments give it in the 1002 * environment and on the command line. Reads the system makefile 1003 * followed by either Makefile, makefile or the file given by the 1004 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 1005 * flags it has received by then uses either the Make or the Compat 1006 * module to create the initial list of targets. 1007 * 1008 * Results: 1009 * If -q was given, exits -1 if anything was out-of-date. Else it exits 1010 * 0. 1011 * 1012 * Side Effects: 1013 * The program exits when done. Targets are created. etc. etc. etc. 1014 */ 1015 int 1016 main(int argc, char **argv) 1017 { 1018 Boolean outOfDate; /* FALSE if all targets up to date */ 1019 struct stat sb, sa; 1020 char *p1, *path; 1021 char mdpath[MAXPATHLEN]; 1022 const char *machine = getenv("MACHINE"); 1023 const char *machine_arch = getenv("MACHINE_ARCH"); 1024 char *syspath = getenv("MAKESYSPATH"); 1025 StringList *sysMkPath; /* Path of sys.mk */ 1026 char *cp = NULL, *start; 1027 /* avoid faults on read-only strings */ 1028 static char defsyspath[] = _PATH_DEFSYSPATH; 1029 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 1030 struct timeval rightnow; /* to initialize random seed */ 1031 struct utsname utsname; 1032 1033 /* default to writing debug to stderr */ 1034 debug_file = stderr; 1035 1036 #ifdef SIGINFO 1037 (void)bmake_signal(SIGINFO, siginfo); 1038 #endif 1039 /* 1040 * Set the seed to produce a different random sequence 1041 * on each program execution. 1042 */ 1043 gettimeofday(&rightnow, NULL); 1044 srandom(rightnow.tv_sec + rightnow.tv_usec); 1045 1046 if ((progname = strrchr(argv[0], '/')) != NULL) 1047 progname++; 1048 else 1049 progname = argv[0]; 1050 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1051 /* 1052 * get rid of resource limit on file descriptors 1053 */ 1054 { 1055 struct rlimit rl; 1056 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1057 rl.rlim_cur != rl.rlim_max) { 1058 rl.rlim_cur = rl.rlim_max; 1059 (void)setrlimit(RLIMIT_NOFILE, &rl); 1060 } 1061 } 1062 #endif 1063 1064 if (uname(&utsname) == -1) { 1065 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1066 strerror(errno)); 1067 exit(2); 1068 } 1069 1070 /* 1071 * Get the name of this type of MACHINE from utsname 1072 * so we can share an executable for similar machines. 1073 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1074 * 1075 * Note that both MACHINE and MACHINE_ARCH are decided at 1076 * run-time. 1077 */ 1078 if (!machine) { 1079 #ifdef MAKE_NATIVE 1080 machine = utsname.machine; 1081 #else 1082 #ifdef MAKE_MACHINE 1083 machine = MAKE_MACHINE; 1084 #else 1085 machine = "unknown"; 1086 #endif 1087 #endif 1088 } 1089 1090 if (!machine_arch) { 1091 #ifdef MAKE_NATIVE 1092 static char machine_arch_buf[sizeof(utsname.machine)]; 1093 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1094 size_t len = sizeof(machine_arch_buf); 1095 1096 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1097 &len, NULL, 0) < 0) { 1098 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1099 strerror(errno)); 1100 exit(2); 1101 } 1102 1103 machine_arch = machine_arch_buf; 1104 #else 1105 #ifndef MACHINE_ARCH 1106 #ifdef MAKE_MACHINE_ARCH 1107 machine_arch = MAKE_MACHINE_ARCH; 1108 #else 1109 machine_arch = "unknown"; 1110 #endif 1111 #else 1112 machine_arch = MACHINE_ARCH; 1113 #endif 1114 #endif 1115 } 1116 1117 myPid = getpid(); /* remember this for vFork() */ 1118 1119 /* 1120 * Just in case MAKEOBJDIR wants us to do something tricky. 1121 */ 1122 Var_Init(); /* Initialize the lists of variables for 1123 * parsing arguments */ 1124 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1125 Var_Set("MACHINE", machine, VAR_GLOBAL); 1126 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1127 #ifdef MAKE_VERSION 1128 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1129 #endif 1130 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1131 /* 1132 * This is the traditional preference for makefiles. 1133 */ 1134 #ifndef MAKEFILE_PREFERENCE_LIST 1135 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1136 #endif 1137 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1138 VAR_GLOBAL); 1139 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1140 1141 create = Lst_Init(); 1142 makefiles = Lst_Init(); 1143 printVars = 0; 1144 debugVflag = FALSE; 1145 variables = Lst_Init(); 1146 beSilent = FALSE; /* Print commands as executed */ 1147 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1148 noExecute = FALSE; /* Execute all commands */ 1149 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1150 keepgoing = FALSE; /* Stop on error */ 1151 allPrecious = FALSE; /* Remove targets when interrupted */ 1152 deleteOnError = FALSE; /* Historical default behavior */ 1153 queryFlag = FALSE; /* This is not just a check-run */ 1154 noBuiltins = FALSE; /* Read the built-in rules */ 1155 touchFlag = FALSE; /* Actually update targets */ 1156 debug = 0; /* No debug verbosity, please. */ 1157 jobsRunning = FALSE; 1158 1159 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1160 maxJobTokens = maxJobs; 1161 compatMake = FALSE; /* No compat mode */ 1162 ignorePWD = FALSE; 1163 1164 /* 1165 * Initialize the parsing, directory and variable modules to prepare 1166 * for the reading of inclusion paths and variable settings on the 1167 * command line 1168 */ 1169 1170 /* 1171 * Initialize various variables. 1172 * MAKE also gets this name, for compatibility 1173 * .MAKEFLAGS gets set to the empty string just in case. 1174 * MFLAGS also gets initialized empty, for compatibility. 1175 */ 1176 Parse_Init(); 1177 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1178 /* 1179 * Leave alone if it is an absolute path, or if it does 1180 * not contain a '/' in which case we need to find it in 1181 * the path, like execvp(3) and the shells do. 1182 */ 1183 p1 = argv[0]; 1184 } else { 1185 /* 1186 * A relative path, canonicalize it. 1187 */ 1188 p1 = cached_realpath(argv[0], mdpath); 1189 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1190 p1 = argv[0]; /* realpath failed */ 1191 } 1192 } 1193 Var_Set("MAKE", p1, VAR_GLOBAL); 1194 Var_Set(".MAKE", p1, VAR_GLOBAL); 1195 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1196 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1197 Var_Set("MFLAGS", "", VAR_GLOBAL); 1198 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1199 /* some makefiles need to know this */ 1200 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1201 1202 /* 1203 * Set some other useful macros 1204 */ 1205 { 1206 char tmp[64], *ep; 1207 1208 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1209 if (makelevel < 0) 1210 makelevel = 0; 1211 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1212 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1213 snprintf(tmp, sizeof(tmp), "%u", myPid); 1214 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1215 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1216 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1217 } 1218 if (makelevel > 0) { 1219 char pn[1024]; 1220 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1221 progname = bmake_strdup(pn); 1222 } 1223 1224 #ifdef USE_META 1225 meta_init(); 1226 #endif 1227 Dir_Init(); 1228 1229 /* 1230 * First snag any flags out of the MAKE environment variable. 1231 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1232 * in a different format). 1233 */ 1234 #ifdef POSIX 1235 p1 = explode(getenv("MAKEFLAGS")); 1236 Main_ParseArgLine(p1); 1237 free(p1); 1238 #else 1239 Main_ParseArgLine(getenv("MAKE")); 1240 #endif 1241 1242 /* 1243 * Find where we are (now). 1244 * We take care of PWD for the automounter below... 1245 */ 1246 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1247 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1248 progname, strerror(errno)); 1249 exit(2); 1250 } 1251 1252 MainParseArgs(argc, argv); 1253 1254 if (enterFlag) 1255 printf("%s: Entering directory `%s'\n", progname, curdir); 1256 1257 /* 1258 * Verify that cwd is sane. 1259 */ 1260 if (stat(curdir, &sa) == -1) { 1261 (void)fprintf(stderr, "%s: %s: %s.\n", 1262 progname, curdir, strerror(errno)); 1263 exit(2); 1264 } 1265 1266 /* 1267 * All this code is so that we know where we are when we start up 1268 * on a different machine with pmake. 1269 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1270 * since the value of curdir can vary depending on how we got 1271 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1272 * or via subdir.mk in which case its likely a shell which does 1273 * not provide it. 1274 * So, to stop it breaking this case only, we ignore PWD if 1275 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1276 */ 1277 #ifndef NO_PWD_OVERRIDE 1278 if (!ignorePWD) { 1279 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1280 1281 if ((pwd = getenv("PWD")) != NULL && 1282 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1283 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1284 VAR_CMD, &ptmp2); 1285 1286 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1287 if (stat(pwd, &sb) == 0 && 1288 sa.st_ino == sb.st_ino && 1289 sa.st_dev == sb.st_dev) 1290 (void)strncpy(curdir, pwd, MAXPATHLEN); 1291 } 1292 } 1293 bmake_free(ptmp1); 1294 bmake_free(ptmp2); 1295 } 1296 #endif 1297 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1298 1299 /* 1300 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1301 * MAKEOBJDIR is set in the environment, try only that value 1302 * and fall back to .CURDIR if it does not exist. 1303 * 1304 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1305 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1306 * of these paths exist, just use .CURDIR. 1307 */ 1308 Dir_InitDir(curdir); 1309 (void)Main_SetObjdir("%s", curdir); 1310 1311 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1312 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1313 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1314 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1315 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1316 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1317 1318 /* 1319 * Initialize archive, target and suffix modules in preparation for 1320 * parsing the makefile(s) 1321 */ 1322 Arch_Init(); 1323 Targ_Init(); 1324 Suff_Init(); 1325 Trace_Init(tracefile); 1326 1327 DEFAULT = NULL; 1328 (void)time(&now); 1329 1330 Trace_Log(MAKESTART, NULL); 1331 1332 InitVarTargets(); 1333 1334 /* 1335 * If no user-supplied system path was given (through the -m option) 1336 * add the directories from the DEFSYSPATH (more than one may be given 1337 * as dir1:...:dirn) to the system include path. 1338 */ 1339 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1340 if (syspath == NULL || syspath[0] == '\0') 1341 syspath = defsyspath; 1342 else 1343 syspath = bmake_strdup(syspath); 1344 1345 for (start = syspath; *start != '\0'; start = cp) { 1346 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1347 continue; 1348 if (*cp == ':') { 1349 *cp++ = '\0'; 1350 } 1351 /* look for magic parent directory search string */ 1352 if (strncmp(".../", start, 4) != 0) { 1353 (void)Dir_AddDir(defIncPath, start); 1354 } else { 1355 if (Dir_FindHereOrAbove(curdir, start+4, 1356 found_path, sizeof(found_path))) { 1357 (void)Dir_AddDir(defIncPath, found_path); 1358 } 1359 } 1360 } 1361 if (syspath != defsyspath) 1362 free(syspath); 1363 1364 /* 1365 * Read in the built-in rules first, followed by the specified 1366 * makefiles, or the default makefile and Makefile, in that order, 1367 * if no makefiles were given on the command line. 1368 */ 1369 if (!noBuiltins) { 1370 StringListNode *ln; 1371 1372 sysMkPath = Lst_Init(); 1373 Dir_Expand(_PATH_DEFSYSMK, 1374 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1375 sysMkPath); 1376 if (Lst_IsEmpty(sysMkPath)) 1377 Fatal("%s: no system rules (%s).", progname, 1378 _PATH_DEFSYSMK); 1379 ln = Lst_Find(sysMkPath, ReadMakefileSucceeded, NULL); 1380 if (ln == NULL) 1381 Fatal("%s: cannot open %s.", progname, 1382 (char *)LstNode_Datum(Lst_First(sysMkPath))); 1383 } 1384 1385 if (!Lst_IsEmpty(makefiles)) { 1386 StringListNode *ln; 1387 1388 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1389 if (ln != NULL) 1390 Fatal("%s: cannot open %s.", progname, 1391 (char *)LstNode_Datum(ln)); 1392 } else { 1393 (void)Var_Subst("${" MAKEFILE_PREFERENCE "}", 1394 VAR_CMD, VARE_WANTRES, &p1); 1395 /* TODO: handle errors */ 1396 (void)str2Lst_Append(makefiles, p1, NULL); 1397 (void)Lst_Find(makefiles, ReadMakefileSucceeded, NULL); 1398 free(p1); 1399 } 1400 1401 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1402 if (!noBuiltins || !printVars) { 1403 (void)Var_Subst("${.MAKE.DEPENDFILE:T}", 1404 VAR_CMD, VARE_WANTRES, &makeDependfile); 1405 /* TODO: handle errors */ 1406 doing_depend = TRUE; 1407 (void)ReadMakefile(makeDependfile); 1408 doing_depend = FALSE; 1409 } 1410 1411 if (enterFlagObj) 1412 printf("%s: Entering directory `%s'\n", progname, objdir); 1413 1414 MakeMode(NULL); 1415 1416 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1417 bmake_free(p1); 1418 1419 if (!forceJobs && !compatMake && 1420 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1421 char *value; 1422 int n; 1423 1424 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1425 /* TODO: handle errors */ 1426 n = strtol(value, NULL, 0); 1427 if (n < 1) { 1428 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1429 progname); 1430 exit(1); 1431 } 1432 if (n != maxJobs) { 1433 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1434 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1435 } 1436 maxJobs = n; 1437 maxJobTokens = maxJobs; 1438 forceJobs = TRUE; 1439 free(value); 1440 } 1441 1442 /* 1443 * Be compatible if user did not specify -j and did not explicitly 1444 * turned compatibility on 1445 */ 1446 if (!compatMake && !forceJobs) { 1447 compatMake = TRUE; 1448 } 1449 1450 if (!compatMake) 1451 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1452 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1453 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1454 1455 if (!printVars) 1456 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1457 1458 1459 /* 1460 * For compatibility, look at the directories in the VPATH variable 1461 * and add them to the search path, if the variable is defined. The 1462 * variable's value is in the same format as the PATH envariable, i.e. 1463 * <directory>:<directory>:<directory>... 1464 */ 1465 if (Var_Exists("VPATH", VAR_CMD)) { 1466 char *vpath, savec; 1467 /* 1468 * GCC stores string constants in read-only memory, but 1469 * Var_Subst will want to write this thing, so store it 1470 * in an array 1471 */ 1472 static char VPATH[] = "${VPATH}"; 1473 1474 (void)Var_Subst(VPATH, VAR_CMD, VARE_WANTRES, &vpath); 1475 /* TODO: handle errors */ 1476 path = vpath; 1477 do { 1478 /* skip to end of directory */ 1479 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1480 continue; 1481 /* Save terminator character so know when to stop */ 1482 savec = *cp; 1483 *cp = '\0'; 1484 /* Add directory to search path */ 1485 (void)Dir_AddDir(dirSearchPath, path); 1486 *cp = savec; 1487 path = cp + 1; 1488 } while (savec == ':'); 1489 free(vpath); 1490 } 1491 1492 /* 1493 * Now that all search paths have been read for suffixes et al, it's 1494 * time to add the default search path to their lists... 1495 */ 1496 Suff_DoPaths(); 1497 1498 /* 1499 * Propagate attributes through :: dependency lists. 1500 */ 1501 Targ_Propagate(); 1502 1503 /* print the initial graph, if the user requested it */ 1504 if (DEBUG(GRAPH1)) 1505 Targ_PrintGraph(1); 1506 1507 /* print the values of any variables requested by the user */ 1508 if (printVars) { 1509 doPrintVars(); 1510 outOfDate = FALSE; 1511 } else { 1512 outOfDate = runTargets(); 1513 } 1514 1515 #ifdef CLEANUP 1516 Lst_Free(variables); 1517 Lst_Free(makefiles); 1518 Lst_Destroy(create, free); 1519 #endif 1520 1521 /* print the graph now it's been processed if the user requested it */ 1522 if (DEBUG(GRAPH2)) 1523 Targ_PrintGraph(2); 1524 1525 Trace_Log(MAKEEND, 0); 1526 1527 if (enterFlagObj) 1528 printf("%s: Leaving directory `%s'\n", progname, objdir); 1529 if (enterFlag) 1530 printf("%s: Leaving directory `%s'\n", progname, curdir); 1531 1532 #ifdef USE_META 1533 meta_finish(); 1534 #endif 1535 Suff_End(); 1536 Targ_End(); 1537 Arch_End(); 1538 Var_End(); 1539 Parse_End(); 1540 Dir_End(); 1541 Job_End(); 1542 Trace_End(); 1543 1544 return outOfDate ? 1 : 0; 1545 } 1546 1547 /* Open and parse the given makefile, with all its side effects. 1548 * 1549 * Results: 1550 * 0 if ok. -1 if couldn't open file. 1551 */ 1552 static int 1553 ReadMakefile(const char *fname) 1554 { 1555 int fd; 1556 char *name, *path = NULL; 1557 1558 if (!strcmp(fname, "-")) { 1559 Parse_File(NULL /*stdin*/, -1); 1560 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1561 } else { 1562 /* if we've chdir'd, rebuild the path name */ 1563 if (strcmp(curdir, objdir) && *fname != '/') { 1564 path = str_concat3(curdir, "/", fname); 1565 fd = open(path, O_RDONLY); 1566 if (fd != -1) { 1567 fname = path; 1568 goto found; 1569 } 1570 free(path); 1571 1572 /* If curdir failed, try objdir (ala .depend) */ 1573 path = str_concat3(objdir, "/", fname); 1574 fd = open(path, O_RDONLY); 1575 if (fd != -1) { 1576 fname = path; 1577 goto found; 1578 } 1579 } else { 1580 fd = open(fname, O_RDONLY); 1581 if (fd != -1) 1582 goto found; 1583 } 1584 /* look in -I and system include directories. */ 1585 name = Dir_FindFile(fname, parseIncPath); 1586 if (!name) 1587 name = Dir_FindFile(fname, 1588 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1589 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1590 free(name); 1591 free(path); 1592 return -1; 1593 } 1594 fname = name; 1595 /* 1596 * set the MAKEFILE variable desired by System V fans -- the 1597 * placement of the setting here means it gets set to the last 1598 * makefile specified, as it is set by SysV make. 1599 */ 1600 found: 1601 if (!doing_depend) 1602 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1603 Parse_File(fname, fd); 1604 } 1605 free(path); 1606 return 0; 1607 } 1608 1609 1610 1611 /*- 1612 * Cmd_Exec -- 1613 * Execute the command in cmd, and return the output of that command 1614 * in a string. In the output, newlines are replaced with spaces. 1615 * 1616 * Results: 1617 * A string containing the output of the command, or the empty string. 1618 * *errfmt returns a format string describing the command failure, 1619 * if any, using a single %s conversion specification. 1620 * 1621 * Side Effects: 1622 * The string must be freed by the caller. 1623 */ 1624 char * 1625 Cmd_Exec(const char *cmd, const char **errfmt) 1626 { 1627 const char *args[4]; /* Args for invoking the shell */ 1628 int fds[2]; /* Pipe streams */ 1629 int cpid; /* Child PID */ 1630 int pid; /* PID from wait() */ 1631 int status; /* command exit status */ 1632 Buffer buf; /* buffer to store the result */ 1633 ssize_t bytes_read; 1634 char *res; /* result */ 1635 size_t res_len; 1636 char *cp; 1637 int savederr; /* saved errno */ 1638 1639 *errfmt = NULL; 1640 1641 if (!shellName) 1642 Shell_Init(); 1643 /* 1644 * Set up arguments for shell 1645 */ 1646 args[0] = shellName; 1647 args[1] = "-c"; 1648 args[2] = cmd; 1649 args[3] = NULL; 1650 1651 /* 1652 * Open a pipe for fetching its output 1653 */ 1654 if (pipe(fds) == -1) { 1655 *errfmt = "Couldn't create pipe for \"%s\""; 1656 goto bad; 1657 } 1658 1659 /* 1660 * Fork 1661 */ 1662 switch (cpid = vFork()) { 1663 case 0: 1664 /* 1665 * Close input side of pipe 1666 */ 1667 (void)close(fds[0]); 1668 1669 /* 1670 * Duplicate the output stream to the shell's output, then 1671 * shut the extra thing down. Note we don't fetch the error 1672 * stream...why not? Why? 1673 */ 1674 (void)dup2(fds[1], 1); 1675 (void)close(fds[1]); 1676 1677 Var_ExportVars(); 1678 1679 (void)execv(shellPath, UNCONST(args)); 1680 _exit(1); 1681 /*NOTREACHED*/ 1682 1683 case -1: 1684 *errfmt = "Couldn't exec \"%s\""; 1685 goto bad; 1686 1687 default: 1688 /* 1689 * No need for the writing half 1690 */ 1691 (void)close(fds[1]); 1692 1693 savederr = 0; 1694 Buf_Init(&buf, 0); 1695 1696 do { 1697 char result[BUFSIZ]; 1698 bytes_read = read(fds[0], result, sizeof(result)); 1699 if (bytes_read > 0) 1700 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1701 } 1702 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1703 if (bytes_read == -1) 1704 savederr = errno; 1705 1706 /* 1707 * Close the input side of the pipe. 1708 */ 1709 (void)close(fds[0]); 1710 1711 /* 1712 * Wait for the process to exit. 1713 */ 1714 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1715 JobReapChild(pid, status, FALSE); 1716 continue; 1717 } 1718 res_len = Buf_Len(&buf); 1719 res = Buf_Destroy(&buf, FALSE); 1720 1721 if (savederr != 0) 1722 *errfmt = "Couldn't read shell's output for \"%s\""; 1723 1724 if (WIFSIGNALED(status)) 1725 *errfmt = "\"%s\" exited on a signal"; 1726 else if (WEXITSTATUS(status) != 0) 1727 *errfmt = "\"%s\" returned non-zero status"; 1728 1729 /* Convert newlines to spaces. A final newline is just stripped */ 1730 if (res_len > 0 && res[res_len - 1] == '\n') 1731 res[res_len - 1] = '\0'; 1732 for (cp = res; *cp != '\0'; cp++) 1733 if (*cp == '\n') 1734 *cp = ' '; 1735 break; 1736 } 1737 return res; 1738 bad: 1739 return bmake_strdup(""); 1740 } 1741 1742 /*- 1743 * Error -- 1744 * Print an error message given its format. 1745 * 1746 * Results: 1747 * None. 1748 * 1749 * Side Effects: 1750 * The message is printed. 1751 */ 1752 void 1753 Error(const char *fmt, ...) 1754 { 1755 va_list ap; 1756 FILE *err_file; 1757 1758 err_file = debug_file; 1759 if (err_file == stdout) 1760 err_file = stderr; 1761 (void)fflush(stdout); 1762 for (;;) { 1763 va_start(ap, fmt); 1764 fprintf(err_file, "%s: ", progname); 1765 (void)vfprintf(err_file, fmt, ap); 1766 va_end(ap); 1767 (void)fprintf(err_file, "\n"); 1768 (void)fflush(err_file); 1769 if (err_file == stderr) 1770 break; 1771 err_file = stderr; 1772 } 1773 } 1774 1775 /* Produce a Fatal error message, then exit immediately. 1776 * 1777 * If jobs are running, waits for them to finish. */ 1778 void 1779 Fatal(const char *fmt, ...) 1780 { 1781 va_list ap; 1782 1783 va_start(ap, fmt); 1784 if (jobsRunning) 1785 Job_Wait(); 1786 1787 (void)fflush(stdout); 1788 (void)vfprintf(stderr, fmt, ap); 1789 va_end(ap); 1790 (void)fprintf(stderr, "\n"); 1791 (void)fflush(stderr); 1792 1793 PrintOnError(NULL, NULL); 1794 1795 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1796 Targ_PrintGraph(2); 1797 Trace_Log(MAKEERROR, 0); 1798 exit(2); /* Not 1 so -q can distinguish error */ 1799 } 1800 1801 /* 1802 * Punt -- 1803 * Major exception once jobs are being created. Kills all jobs, prints 1804 * a message and exits. 1805 * 1806 * Results: 1807 * None 1808 * 1809 * Side Effects: 1810 * All children are killed indiscriminately and the program Lib_Exits 1811 */ 1812 void 1813 Punt(const char *fmt, ...) 1814 { 1815 va_list ap; 1816 1817 va_start(ap, fmt); 1818 (void)fflush(stdout); 1819 (void)fprintf(stderr, "%s: ", progname); 1820 (void)vfprintf(stderr, fmt, ap); 1821 va_end(ap); 1822 (void)fprintf(stderr, "\n"); 1823 (void)fflush(stderr); 1824 1825 PrintOnError(NULL, NULL); 1826 1827 DieHorribly(); 1828 } 1829 1830 /*- 1831 * DieHorribly -- 1832 * Exit without giving a message. 1833 * 1834 * Results: 1835 * None 1836 * 1837 * Side Effects: 1838 * A big one... 1839 */ 1840 void 1841 DieHorribly(void) 1842 { 1843 if (jobsRunning) 1844 Job_AbortAll(); 1845 if (DEBUG(GRAPH2)) 1846 Targ_PrintGraph(2); 1847 Trace_Log(MAKEERROR, 0); 1848 exit(2); /* Not 1, so -q can distinguish error */ 1849 } 1850 1851 /* 1852 * Finish -- 1853 * Called when aborting due to errors in child shell to signal 1854 * abnormal exit. 1855 * 1856 * Results: 1857 * None 1858 * 1859 * Side Effects: 1860 * The program exits 1861 */ 1862 void 1863 Finish(int errors) 1864 /* number of errors encountered in Make_Make */ 1865 { 1866 if (dieQuietly(NULL, -1)) 1867 exit(2); 1868 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1869 } 1870 1871 /* 1872 * eunlink -- 1873 * Remove a file carefully, avoiding directories. 1874 */ 1875 int 1876 eunlink(const char *file) 1877 { 1878 struct stat st; 1879 1880 if (lstat(file, &st) == -1) 1881 return -1; 1882 1883 if (S_ISDIR(st.st_mode)) { 1884 errno = EISDIR; 1885 return -1; 1886 } 1887 return unlink(file); 1888 } 1889 1890 /* 1891 * execError -- 1892 * Print why exec failed, avoiding stdio. 1893 */ 1894 void 1895 execError(const char *af, const char *av) 1896 { 1897 #ifdef USE_IOVEC 1898 int i = 0; 1899 struct iovec iov[8]; 1900 #define IOADD(s) \ 1901 (void)(iov[i].iov_base = UNCONST(s), \ 1902 iov[i].iov_len = strlen(iov[i].iov_base), \ 1903 i++) 1904 #else 1905 #define IOADD(void)write(2, s, strlen(s)) 1906 #endif 1907 1908 IOADD(progname); 1909 IOADD(": "); 1910 IOADD(af); 1911 IOADD("("); 1912 IOADD(av); 1913 IOADD(") failed ("); 1914 IOADD(strerror(errno)); 1915 IOADD(")\n"); 1916 1917 #ifdef USE_IOVEC 1918 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1919 continue; 1920 #endif 1921 } 1922 1923 /* 1924 * usage -- 1925 * exit with usage message 1926 */ 1927 static void 1928 usage(void) 1929 { 1930 char *p; 1931 if ((p = strchr(progname, '[')) != NULL) 1932 *p = '\0'; 1933 1934 (void)fprintf(stderr, 1935 "usage: %s [-BeikNnqrstWwX] \n" 1936 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1937 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1938 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1939 progname); 1940 exit(2); 1941 } 1942 1943 /* 1944 * realpath(3) can get expensive, cache results... 1945 */ 1946 static GNode *cached_realpaths = NULL; 1947 1948 static GNode * 1949 get_cached_realpaths(void) 1950 { 1951 1952 if (!cached_realpaths) { 1953 cached_realpaths = Targ_NewGN("Realpath"); 1954 #ifndef DEBUG_REALPATH_CACHE 1955 cached_realpaths->flags = INTERNAL; 1956 #endif 1957 } 1958 1959 return cached_realpaths; 1960 } 1961 1962 /* purge any relative paths */ 1963 static void 1964 purge_cached_realpaths(void) 1965 { 1966 GNode *cache = get_cached_realpaths(); 1967 Hash_Entry *he, *nhe; 1968 Hash_Search hs; 1969 1970 he = Hash_EnumFirst(&cache->context, &hs); 1971 while (he) { 1972 nhe = Hash_EnumNext(&hs); 1973 if (he->name[0] != '/') { 1974 if (DEBUG(DIR)) 1975 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1976 Hash_DeleteEntry(&cache->context, he); 1977 } 1978 he = nhe; 1979 } 1980 } 1981 1982 char * 1983 cached_realpath(const char *pathname, char *resolved) 1984 { 1985 GNode *cache; 1986 const char *rp; 1987 char *cp; 1988 1989 if (!pathname || !pathname[0]) 1990 return NULL; 1991 1992 cache = get_cached_realpaths(); 1993 1994 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1995 /* a hit */ 1996 strncpy(resolved, rp, MAXPATHLEN); 1997 resolved[MAXPATHLEN - 1] = '\0'; 1998 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1999 Var_Set(pathname, rp, cache); 2000 } /* else should we negative-cache? */ 2001 2002 bmake_free(cp); 2003 return rp ? resolved : NULL; 2004 } 2005 2006 2007 static int 2008 addErrorCMD(void *cmdp, void *gnp) 2009 { 2010 if (cmdp == NULL) 2011 return 1; /* stop */ 2012 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2013 return 0; 2014 } 2015 2016 /* 2017 * Return true if we should die without noise. 2018 * For example our failing child was a sub-make 2019 * or failure happend elsewhere. 2020 */ 2021 int 2022 dieQuietly(GNode *gn, int bf) 2023 { 2024 static int quietly = -1; 2025 2026 if (quietly < 0) { 2027 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2028 quietly = 0; 2029 else if (bf >= 0) 2030 quietly = bf; 2031 else 2032 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2033 } 2034 return quietly; 2035 } 2036 2037 void 2038 PrintOnError(GNode *gn, const char *s) 2039 { 2040 static GNode *en = NULL; 2041 const char *expr; 2042 char *cp; 2043 2044 if (DEBUG(HASH)) { 2045 Targ_Stats(); 2046 Var_Stats(); 2047 } 2048 2049 /* we generally want to keep quiet if a sub-make died */ 2050 if (dieQuietly(gn, -1)) 2051 return; 2052 2053 if (s) 2054 printf("%s", s); 2055 2056 printf("\n%s: stopped in %s\n", progname, curdir); 2057 2058 if (en) 2059 return; /* we've been here! */ 2060 if (gn) { 2061 /* 2062 * We can print this even if there is no .ERROR target. 2063 */ 2064 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2065 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2066 Lst_ForEachUntil(gn->commands, addErrorCMD, gn); 2067 } 2068 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2069 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2070 /* TODO: handle errors */ 2071 printf("%s", cp); 2072 free(cp); 2073 fflush(stdout); 2074 2075 /* 2076 * Finally, see if there is a .ERROR target, and run it if so. 2077 */ 2078 en = Targ_FindNode(".ERROR"); 2079 if (en) { 2080 en->type |= OP_SPECIAL; 2081 Compat_Make(en, en); 2082 } 2083 } 2084 2085 void 2086 Main_ExportMAKEFLAGS(Boolean first) 2087 { 2088 static Boolean once = TRUE; 2089 const char *expr; 2090 char *s; 2091 2092 if (once != first) 2093 return; 2094 once = FALSE; 2095 2096 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2097 (void)Var_Subst(expr, VAR_CMD, VARE_WANTRES, &s); 2098 /* TODO: handle errors */ 2099 if (s[0] != '\0') { 2100 #ifdef POSIX 2101 setenv("MAKEFLAGS", s, 1); 2102 #else 2103 setenv("MAKE", s, 1); 2104 #endif 2105 } 2106 } 2107 2108 char * 2109 getTmpdir(void) 2110 { 2111 static char *tmpdir = NULL; 2112 2113 if (!tmpdir) { 2114 struct stat st; 2115 2116 /* 2117 * Honor $TMPDIR but only if it is valid. 2118 * Ensure it ends with /. 2119 */ 2120 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2121 VARE_WANTRES, &tmpdir); 2122 /* TODO: handle errors */ 2123 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2124 free(tmpdir); 2125 tmpdir = bmake_strdup(_PATH_TMP); 2126 } 2127 } 2128 return tmpdir; 2129 } 2130 2131 /* 2132 * Create and open a temp file using "pattern". 2133 * If "fnamep" is provided set it to a copy of the filename created. 2134 * Otherwise unlink the file once open. 2135 */ 2136 int 2137 mkTempFile(const char *pattern, char **fnamep) 2138 { 2139 static char *tmpdir = NULL; 2140 char tfile[MAXPATHLEN]; 2141 int fd; 2142 2143 if (!pattern) 2144 pattern = TMPPAT; 2145 if (!tmpdir) 2146 tmpdir = getTmpdir(); 2147 if (pattern[0] == '/') { 2148 snprintf(tfile, sizeof(tfile), "%s", pattern); 2149 } else { 2150 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2151 } 2152 if ((fd = mkstemp(tfile)) < 0) 2153 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2154 if (fnamep) { 2155 *fnamep = bmake_strdup(tfile); 2156 } else { 2157 unlink(tfile); /* we just want the descriptor */ 2158 } 2159 return fd; 2160 } 2161 2162 /* 2163 * Convert a string representation of a boolean. 2164 * Anything that looks like "No", "False", "Off", "0" etc, 2165 * is FALSE, otherwise TRUE. 2166 */ 2167 Boolean 2168 s2Boolean(const char *s, Boolean bf) 2169 { 2170 if (s) { 2171 switch(*s) { 2172 case '\0': /* not set - the default wins */ 2173 break; 2174 case '0': 2175 case 'F': 2176 case 'f': 2177 case 'N': 2178 case 'n': 2179 bf = FALSE; 2180 break; 2181 case 'O': 2182 case 'o': 2183 switch (s[1]) { 2184 case 'F': 2185 case 'f': 2186 bf = FALSE; 2187 break; 2188 default: 2189 bf = TRUE; 2190 break; 2191 } 2192 break; 2193 default: 2194 bf = TRUE; 2195 break; 2196 } 2197 } 2198 return bf; 2199 } 2200 2201 /* 2202 * Return a Boolean based on setting of a knob. 2203 * 2204 * If the knob is not set, the supplied default is the return value. 2205 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2206 * is FALSE, otherwise TRUE. 2207 */ 2208 Boolean 2209 getBoolean(const char *name, Boolean fallback) 2210 { 2211 char *expr = str_concat3("${", name, ":U:tl}"); 2212 char *value; 2213 Boolean res; 2214 2215 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 2216 /* TODO: handle errors */ 2217 res = s2Boolean(value, fallback); 2218 free(value); 2219 free(expr); 2220 return res; 2221 } 2222
Indexes created Mon Sep 22 21:09:42 GMT 2025