main.c revision 1.356
1 /* $NetBSD: main.c,v 1.356 2020/10/01 23:14:07 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 1.356 2020/10/01 23:14:07 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 Boolean 460 MainParseArg(char c, char *argvalue) 461 { 462 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 463 464 switch (c) { 465 case '\0': 466 break; 467 case 'B': 468 compatMake = TRUE; 469 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 470 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 471 break; 472 case 'C': 473 MainParseArgChdir(argvalue); 474 break; 475 case 'D': 476 if (argvalue == NULL || argvalue[0] == 0) return FALSE; 477 Var_Set(argvalue, "1", VAR_GLOBAL); 478 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 479 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 480 break; 481 case 'I': 482 if (argvalue == NULL) return FALSE; 483 Parse_AddIncludeDir(argvalue); 484 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 485 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 486 break; 487 case 'J': 488 if (argvalue == NULL) return FALSE; 489 MainParseArgJobsInternal(argvalue); 490 break; 491 case 'N': 492 noExecute = TRUE; 493 noRecursiveExecute = TRUE; 494 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 495 break; 496 case 'S': 497 keepgoing = FALSE; 498 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 499 break; 500 case 'T': 501 if (argvalue == NULL) return FALSE; 502 tracefile = bmake_strdup(argvalue); 503 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 504 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 505 break; 506 case 'V': 507 case 'v': 508 if (argvalue == NULL) return FALSE; 509 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 510 Lst_Append(variables, bmake_strdup(argvalue)); 511 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 512 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 513 break; 514 case 'W': 515 parseWarnFatal = TRUE; 516 break; 517 case 'X': 518 varNoExportEnv = TRUE; 519 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 520 break; 521 case 'd': 522 if (argvalue == NULL) return FALSE; 523 /* If '-d-opts' don't pass to children */ 524 if (argvalue[0] == '-') 525 argvalue++; 526 else { 527 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 528 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 529 } 530 parse_debug_options(argvalue); 531 break; 532 case 'e': 533 checkEnvFirst = TRUE; 534 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 535 break; 536 case 'f': 537 if (argvalue == NULL) return FALSE; 538 Lst_Append(makefiles, bmake_strdup(argvalue)); 539 break; 540 case 'i': 541 ignoreErrors = TRUE; 542 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 543 break; 544 case 'j': 545 if (argvalue == NULL) return FALSE; 546 MainParseArgJobs(argvalue); 547 break; 548 case 'k': 549 keepgoing = TRUE; 550 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 551 break; 552 case 'm': 553 if (argvalue == NULL) return FALSE; 554 /* look for magic parent directory search string */ 555 if (strncmp(".../", argvalue, 4) == 0) { 556 if (!Dir_FindHereOrAbove(curdir, argvalue + 4, 557 found_path, sizeof(found_path))) 558 break; /* nothing doing */ 559 (void)Dir_AddDir(sysIncPath, found_path); 560 } else { 561 (void)Dir_AddDir(sysIncPath, argvalue); 562 } 563 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 564 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 565 break; 566 case 'n': 567 noExecute = TRUE; 568 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 569 break; 570 case 'q': 571 queryFlag = TRUE; 572 /* Kind of nonsensical, wot? */ 573 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 574 break; 575 case 'r': 576 noBuiltins = TRUE; 577 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 578 break; 579 case 's': 580 beSilent = TRUE; 581 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 582 break; 583 case 't': 584 touchFlag = TRUE; 585 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 586 break; 587 case 'w': 588 enterFlag = TRUE; 589 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 590 break; 591 default: 592 case '?': 593 usage(); 594 } 595 return TRUE; 596 } 597 598 /* Parse the given arguments. Called from main() and from 599 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 600 * 601 * The arguments must be treated as read-only and will be freed after the 602 * call. 603 * 604 * XXX: Deal with command line overriding .MAKEFLAGS in makefile */ 605 static void 606 MainParseArgs(int argc, char **argv) 607 { 608 char c = '?'; 609 int arginc; 610 char *argvalue; 611 const char *getopt_def; 612 char *optscan; 613 Boolean inOption, dashDash = FALSE; 614 615 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w" 616 /* Can't actually use getopt(3) because rescanning is not portable */ 617 618 getopt_def = OPTFLAGS; 619 rearg: 620 inOption = FALSE; 621 optscan = NULL; 622 while(argc > 1) { 623 char *getopt_spec; 624 if(!inOption) 625 optscan = argv[1]; 626 c = *optscan++; 627 arginc = 0; 628 if(inOption) { 629 if(c == '\0') { 630 ++argv; 631 --argc; 632 inOption = FALSE; 633 continue; 634 } 635 } else { 636 if (c != '-' || dashDash) 637 break; 638 inOption = TRUE; 639 c = *optscan++; 640 } 641 /* '-' found at some earlier point */ 642 getopt_spec = strchr(getopt_def, c); 643 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 644 /* -<something> found, and <something> should have an arg */ 645 inOption = FALSE; 646 arginc = 1; 647 argvalue = optscan; 648 if(*argvalue == '\0') { 649 if (argc < 3) 650 goto noarg; 651 argvalue = argv[2]; 652 arginc = 2; 653 } 654 } else { 655 argvalue = NULL; 656 } 657 switch (c) { 658 case '\0': 659 arginc = 1; 660 inOption = FALSE; 661 break; 662 case '-': 663 dashDash = TRUE; 664 break; 665 default: 666 if (!MainParseArg(c, argvalue)) 667 goto noarg; 668 } 669 argv += arginc; 670 argc -= arginc; 671 } 672 673 oldVars = TRUE; 674 675 /* 676 * See if the rest of the arguments are variable assignments and 677 * perform them if so. Else take them to be targets and stuff them 678 * on the end of the "create" list. 679 */ 680 for (; argc > 1; ++argv, --argc) 681 if (Parse_IsVar(argv[1])) { 682 Parse_DoVar(argv[1], VAR_CMD); 683 } else { 684 if (!*argv[1]) 685 Punt("illegal (null) argument."); 686 if (*argv[1] == '-' && !dashDash) 687 goto rearg; 688 Lst_Append(create, bmake_strdup(argv[1])); 689 } 690 691 return; 692 noarg: 693 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 694 progname, c); 695 usage(); 696 } 697 698 /*- 699 * Main_ParseArgLine -- 700 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 701 * is encountered and by main() when reading the .MAKEFLAGS envariable. 702 * Takes a line of arguments and breaks it into its 703 * component words and passes those words and the number of them to the 704 * MainParseArgs function. 705 * The line should have all its leading whitespace removed. 706 * 707 * Input: 708 * line Line to fracture 709 * 710 * Results: 711 * None 712 * 713 * Side Effects: 714 * Only those that come from the various arguments. 715 */ 716 void 717 Main_ParseArgLine(const char *line) 718 { 719 Words words; 720 char *p1; 721 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 722 char *buf; 723 724 if (line == NULL) 725 return; 726 for (; *line == ' '; ++line) 727 continue; 728 if (!*line) 729 return; 730 731 buf = str_concat3(argv0, " ", line); 732 free(p1); 733 734 words = Str_Words(buf, TRUE); 735 if (words.words == NULL) { 736 Error("Unterminated quoted string [%s]", buf); 737 free(buf); 738 return; 739 } 740 free(buf); 741 MainParseArgs((int)words.len, words.words); 742 743 Words_Free(words); 744 } 745 746 Boolean 747 Main_SetObjdir(const char *fmt, ...) 748 { 749 struct stat sb; 750 char *path; 751 char buf[MAXPATHLEN + 1]; 752 char buf2[MAXPATHLEN + 1]; 753 Boolean rc = FALSE; 754 va_list ap; 755 756 va_start(ap, fmt); 757 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 758 va_end(ap); 759 760 if (path[0] != '/') { 761 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 762 path = buf2; 763 } 764 765 /* look for the directory and try to chdir there */ 766 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 767 if (chdir(path)) { 768 (void)fprintf(stderr, "make warning: %s: %s.\n", 769 path, strerror(errno)); 770 } else { 771 snprintf(objdir, sizeof objdir, "%s", path); 772 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 773 setenv("PWD", objdir, 1); 774 Dir_InitDot(); 775 purge_cached_realpaths(); 776 rc = TRUE; 777 if (enterFlag && strcmp(objdir, curdir) != 0) 778 enterFlagObj = TRUE; 779 } 780 } 781 782 return rc; 783 } 784 785 static Boolean 786 Main_SetVarObjdir(const char *var, const char *suffix) 787 { 788 char *path_freeIt; 789 const char *path = Var_Value(var, VAR_CMD, &path_freeIt); 790 const char *xpath; 791 char *xpath_freeIt; 792 793 if (path == NULL || path[0] == '\0') { 794 bmake_free(path_freeIt); 795 return FALSE; 796 } 797 798 /* expand variable substitutions */ 799 xpath = path; 800 xpath_freeIt = NULL; 801 if (strchr(path, '$') != 0) { 802 (void)Var_Subst(path, VAR_GLOBAL, VARE_WANTRES, &xpath_freeIt); 803 /* TODO: handle errors */ 804 xpath = xpath_freeIt; 805 } 806 807 (void)Main_SetObjdir("%s%s", xpath, suffix); 808 809 bmake_free(xpath_freeIt); 810 bmake_free(path_freeIt); 811 return TRUE; 812 } 813 814 /* Read and parse the makefile. 815 * Return TRUE if reading the makefile succeeded, for Lst_Find. */ 816 static Boolean 817 ReadMakefileSucceeded(const void *fname, const void *unused) 818 { 819 return ReadMakefile(fname) == 0; 820 } 821 822 /* Read and parse the makefile. 823 * Return TRUE if reading the makefile failed, for Lst_Find. */ 824 static Boolean 825 ReadMakefileFailed(const void *fname, const void *unused) 826 { 827 return ReadMakefile(fname) != 0; 828 } 829 830 int 831 str2Lst_Append(StringList *lp, char *str, const char *sep) 832 { 833 char *cp; 834 int n; 835 836 if (!sep) 837 sep = " \t"; 838 839 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 840 Lst_Append(lp, cp); 841 n++; 842 } 843 return n; 844 } 845 846 #ifdef SIGINFO 847 /*ARGSUSED*/ 848 static void 849 siginfo(int signo MAKE_ATTR_UNUSED) 850 { 851 char dir[MAXPATHLEN]; 852 char str[2 * MAXPATHLEN]; 853 int len; 854 if (getcwd(dir, sizeof(dir)) == NULL) 855 return; 856 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 857 if (len > 0) 858 (void)write(STDERR_FILENO, str, (size_t)len); 859 } 860 #endif 861 862 /* 863 * Allow makefiles some control over the mode we run in. 864 */ 865 void 866 MakeMode(const char *mode) 867 { 868 char *mode_freeIt = NULL; 869 870 if (mode == NULL) { 871 (void)Var_Subst("${" MAKE_MODE ":tl}", 872 VAR_GLOBAL, VARE_WANTRES, &mode_freeIt); 873 /* TODO: handle errors */ 874 mode = mode_freeIt; 875 } 876 877 if (mode[0] != '\0') { 878 if (strstr(mode, "compat")) { 879 compatMake = TRUE; 880 forceJobs = FALSE; 881 } 882 #if USE_META 883 if (strstr(mode, "meta")) 884 meta_mode_init(mode); 885 #endif 886 } 887 888 free(mode_freeIt); 889 } 890 891 static void 892 doPrintVars(void) 893 { 894 StringListNode *ln; 895 Boolean expandVars; 896 897 if (printVars == EXPAND_VARS) 898 expandVars = TRUE; 899 else if (debugVflag) 900 expandVars = FALSE; 901 else 902 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 903 904 for (ln = variables->first; ln != NULL; ln = ln->next) { 905 const char *var = ln->datum; 906 const char *value; 907 char *p1; 908 909 if (strchr(var, '$')) { 910 (void)Var_Subst(var, VAR_GLOBAL, VARE_WANTRES, &p1); 911 /* TODO: handle errors */ 912 value = p1; 913 } else if (expandVars) { 914 char *expr = str_concat3("${", var, "}"); 915 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &p1); 916 /* TODO: handle errors */ 917 value = p1; 918 free(expr); 919 } else { 920 value = Var_Value(var, VAR_GLOBAL, &p1); 921 } 922 printf("%s\n", value ? value : ""); 923 bmake_free(p1); 924 } 925 } 926 927 static Boolean 928 runTargets(void) 929 { 930 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 931 Boolean outOfDate; /* FALSE if all targets up to date */ 932 933 /* 934 * Have now read the entire graph and need to make a list of 935 * targets to create. If none was given on the command line, 936 * we consult the parsing module to find the main target(s) 937 * to create. 938 */ 939 if (Lst_IsEmpty(create)) 940 targs = Parse_MainName(); 941 else 942 targs = Targ_FindList(create); 943 944 if (!compatMake) { 945 /* 946 * Initialize job module before traversing the graph 947 * now that any .BEGIN and .END targets have been read. 948 * This is done only if the -q flag wasn't given 949 * (to prevent the .BEGIN from being executed should 950 * it exist). 951 */ 952 if (!queryFlag) { 953 Job_Init(); 954 jobsRunning = TRUE; 955 } 956 957 /* Traverse the graph, checking on all the targets */ 958 outOfDate = Make_Run(targs); 959 } else { 960 /* 961 * Compat_Init will take care of creating all the 962 * targets as well as initializing the module. 963 */ 964 Compat_Run(targs); 965 outOfDate = FALSE; 966 } 967 Lst_Free(targs); 968 return outOfDate; 969 } 970 971 /* 972 * Set up the .TARGETS variable to contain the list of targets to be 973 * created. If none specified, make the variable empty -- the parser 974 * will fill the thing in with the default or .MAIN target. 975 */ 976 static void 977 InitVarTargets(void) 978 { 979 StringListNode *ln; 980 981 if (Lst_IsEmpty(create)) { 982 Var_Set(".TARGETS", "", VAR_GLOBAL); 983 return; 984 } 985 986 for (ln = create->first; ln != NULL; ln = ln->next) { 987 char *name = ln->datum; 988 Var_Append(".TARGETS", name, VAR_GLOBAL); 989 } 990 } 991 992 /*- 993 * main -- 994 * The main function, for obvious reasons. Initializes variables 995 * and a few modules, then parses the arguments give it in the 996 * environment and on the command line. Reads the system makefile 997 * followed by either Makefile, makefile or the file given by the 998 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 999 * flags it has received by then uses either the Make or the Compat 1000 * module to create the initial list of targets. 1001 * 1002 * Results: 1003 * If -q was given, exits -1 if anything was out-of-date. Else it exits 1004 * 0. 1005 * 1006 * Side Effects: 1007 * The program exits when done. Targets are created. etc. etc. etc. 1008 */ 1009 int 1010 main(int argc, char **argv) 1011 { 1012 Boolean outOfDate; /* FALSE if all targets up to date */ 1013 struct stat sb, sa; 1014 char *p1, *path; 1015 char mdpath[MAXPATHLEN]; 1016 const char *machine = getenv("MACHINE"); 1017 const char *machine_arch = getenv("MACHINE_ARCH"); 1018 char *syspath = getenv("MAKESYSPATH"); 1019 StringList *sysMkPath; /* Path of sys.mk */ 1020 char *cp = NULL, *start; 1021 /* avoid faults on read-only strings */ 1022 static char defsyspath[] = _PATH_DEFSYSPATH; 1023 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 1024 struct timeval rightnow; /* to initialize random seed */ 1025 struct utsname utsname; 1026 1027 /* default to writing debug to stderr */ 1028 debug_file = stderr; 1029 1030 #ifdef SIGINFO 1031 (void)bmake_signal(SIGINFO, siginfo); 1032 #endif 1033 /* 1034 * Set the seed to produce a different random sequence 1035 * on each program execution. 1036 */ 1037 gettimeofday(&rightnow, NULL); 1038 srandom(rightnow.tv_sec + rightnow.tv_usec); 1039 1040 if ((progname = strrchr(argv[0], '/')) != NULL) 1041 progname++; 1042 else 1043 progname = argv[0]; 1044 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1045 /* 1046 * get rid of resource limit on file descriptors 1047 */ 1048 { 1049 struct rlimit rl; 1050 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1051 rl.rlim_cur != rl.rlim_max) { 1052 rl.rlim_cur = rl.rlim_max; 1053 (void)setrlimit(RLIMIT_NOFILE, &rl); 1054 } 1055 } 1056 #endif 1057 1058 if (uname(&utsname) == -1) { 1059 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1060 strerror(errno)); 1061 exit(2); 1062 } 1063 1064 /* 1065 * Get the name of this type of MACHINE from utsname 1066 * so we can share an executable for similar machines. 1067 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1068 * 1069 * Note that both MACHINE and MACHINE_ARCH are decided at 1070 * run-time. 1071 */ 1072 if (!machine) { 1073 #ifdef MAKE_NATIVE 1074 machine = utsname.machine; 1075 #else 1076 #ifdef MAKE_MACHINE 1077 machine = MAKE_MACHINE; 1078 #else 1079 machine = "unknown"; 1080 #endif 1081 #endif 1082 } 1083 1084 if (!machine_arch) { 1085 #ifdef MAKE_NATIVE 1086 static char machine_arch_buf[sizeof(utsname.machine)]; 1087 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1088 size_t len = sizeof(machine_arch_buf); 1089 1090 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1091 &len, NULL, 0) < 0) { 1092 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1093 strerror(errno)); 1094 exit(2); 1095 } 1096 1097 machine_arch = machine_arch_buf; 1098 #else 1099 #ifndef MACHINE_ARCH 1100 #ifdef MAKE_MACHINE_ARCH 1101 machine_arch = MAKE_MACHINE_ARCH; 1102 #else 1103 machine_arch = "unknown"; 1104 #endif 1105 #else 1106 machine_arch = MACHINE_ARCH; 1107 #endif 1108 #endif 1109 } 1110 1111 myPid = getpid(); /* remember this for vFork() */ 1112 1113 /* 1114 * Just in case MAKEOBJDIR wants us to do something tricky. 1115 */ 1116 Var_Init(); /* Initialize the lists of variables for 1117 * parsing arguments */ 1118 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1119 Var_Set("MACHINE", machine, VAR_GLOBAL); 1120 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1121 #ifdef MAKE_VERSION 1122 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1123 #endif 1124 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1125 /* 1126 * This is the traditional preference for makefiles. 1127 */ 1128 #ifndef MAKEFILE_PREFERENCE_LIST 1129 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1130 #endif 1131 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1132 VAR_GLOBAL); 1133 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1134 1135 create = Lst_Init(); 1136 makefiles = Lst_Init(); 1137 printVars = 0; 1138 debugVflag = FALSE; 1139 variables = Lst_Init(); 1140 beSilent = FALSE; /* Print commands as executed */ 1141 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1142 noExecute = FALSE; /* Execute all commands */ 1143 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1144 keepgoing = FALSE; /* Stop on error */ 1145 allPrecious = FALSE; /* Remove targets when interrupted */ 1146 deleteOnError = FALSE; /* Historical default behavior */ 1147 queryFlag = FALSE; /* This is not just a check-run */ 1148 noBuiltins = FALSE; /* Read the built-in rules */ 1149 touchFlag = FALSE; /* Actually update targets */ 1150 debug = 0; /* No debug verbosity, please. */ 1151 jobsRunning = FALSE; 1152 1153 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1154 maxJobTokens = maxJobs; 1155 compatMake = FALSE; /* No compat mode */ 1156 ignorePWD = FALSE; 1157 1158 /* 1159 * Initialize the parsing, directory and variable modules to prepare 1160 * for the reading of inclusion paths and variable settings on the 1161 * command line 1162 */ 1163 1164 /* 1165 * Initialize various variables. 1166 * MAKE also gets this name, for compatibility 1167 * .MAKEFLAGS gets set to the empty string just in case. 1168 * MFLAGS also gets initialized empty, for compatibility. 1169 */ 1170 Parse_Init(); 1171 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1172 /* 1173 * Leave alone if it is an absolute path, or if it does 1174 * not contain a '/' in which case we need to find it in 1175 * the path, like execvp(3) and the shells do. 1176 */ 1177 p1 = argv[0]; 1178 } else { 1179 /* 1180 * A relative path, canonicalize it. 1181 */ 1182 p1 = cached_realpath(argv[0], mdpath); 1183 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1184 p1 = argv[0]; /* realpath failed */ 1185 } 1186 } 1187 Var_Set("MAKE", p1, VAR_GLOBAL); 1188 Var_Set(".MAKE", p1, VAR_GLOBAL); 1189 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1190 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1191 Var_Set("MFLAGS", "", VAR_GLOBAL); 1192 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1193 /* some makefiles need to know this */ 1194 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1195 1196 /* 1197 * Set some other useful macros 1198 */ 1199 { 1200 char tmp[64], *ep; 1201 1202 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1203 if (makelevel < 0) 1204 makelevel = 0; 1205 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1206 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1207 snprintf(tmp, sizeof(tmp), "%u", myPid); 1208 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1209 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1210 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1211 } 1212 if (makelevel > 0) { 1213 char pn[1024]; 1214 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1215 progname = bmake_strdup(pn); 1216 } 1217 1218 #ifdef USE_META 1219 meta_init(); 1220 #endif 1221 Dir_Init(); 1222 1223 /* 1224 * First snag any flags out of the MAKE environment variable. 1225 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1226 * in a different format). 1227 */ 1228 #ifdef POSIX 1229 p1 = explode(getenv("MAKEFLAGS")); 1230 Main_ParseArgLine(p1); 1231 free(p1); 1232 #else 1233 Main_ParseArgLine(getenv("MAKE")); 1234 #endif 1235 1236 /* 1237 * Find where we are (now). 1238 * We take care of PWD for the automounter below... 1239 */ 1240 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1241 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1242 progname, strerror(errno)); 1243 exit(2); 1244 } 1245 1246 MainParseArgs(argc, argv); 1247 1248 if (enterFlag) 1249 printf("%s: Entering directory `%s'\n", progname, curdir); 1250 1251 /* 1252 * Verify that cwd is sane. 1253 */ 1254 if (stat(curdir, &sa) == -1) { 1255 (void)fprintf(stderr, "%s: %s: %s.\n", 1256 progname, curdir, strerror(errno)); 1257 exit(2); 1258 } 1259 1260 /* 1261 * All this code is so that we know where we are when we start up 1262 * on a different machine with pmake. 1263 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1264 * since the value of curdir can vary depending on how we got 1265 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1266 * or via subdir.mk in which case its likely a shell which does 1267 * not provide it. 1268 * So, to stop it breaking this case only, we ignore PWD if 1269 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1270 */ 1271 #ifndef NO_PWD_OVERRIDE 1272 if (!ignorePWD) { 1273 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1274 1275 if ((pwd = getenv("PWD")) != NULL && 1276 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1277 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1278 VAR_CMD, &ptmp2); 1279 1280 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1281 if (stat(pwd, &sb) == 0 && 1282 sa.st_ino == sb.st_ino && 1283 sa.st_dev == sb.st_dev) 1284 (void)strncpy(curdir, pwd, MAXPATHLEN); 1285 } 1286 } 1287 bmake_free(ptmp1); 1288 bmake_free(ptmp2); 1289 } 1290 #endif 1291 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1292 1293 /* 1294 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1295 * MAKEOBJDIR is set in the environment, try only that value 1296 * and fall back to .CURDIR if it does not exist. 1297 * 1298 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1299 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1300 * of these paths exist, just use .CURDIR. 1301 */ 1302 Dir_InitDir(curdir); 1303 (void)Main_SetObjdir("%s", curdir); 1304 1305 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1306 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1307 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1308 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1309 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1310 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1311 1312 /* 1313 * Initialize archive, target and suffix modules in preparation for 1314 * parsing the makefile(s) 1315 */ 1316 Arch_Init(); 1317 Targ_Init(); 1318 Suff_Init(); 1319 Trace_Init(tracefile); 1320 1321 DEFAULT = NULL; 1322 (void)time(&now); 1323 1324 Trace_Log(MAKESTART, NULL); 1325 1326 InitVarTargets(); 1327 1328 /* 1329 * If no user-supplied system path was given (through the -m option) 1330 * add the directories from the DEFSYSPATH (more than one may be given 1331 * as dir1:...:dirn) to the system include path. 1332 */ 1333 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1334 if (syspath == NULL || syspath[0] == '\0') 1335 syspath = defsyspath; 1336 else 1337 syspath = bmake_strdup(syspath); 1338 1339 for (start = syspath; *start != '\0'; start = cp) { 1340 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1341 continue; 1342 if (*cp == ':') { 1343 *cp++ = '\0'; 1344 } 1345 /* look for magic parent directory search string */ 1346 if (strncmp(".../", start, 4) != 0) { 1347 (void)Dir_AddDir(defIncPath, start); 1348 } else { 1349 if (Dir_FindHereOrAbove(curdir, start+4, 1350 found_path, sizeof(found_path))) { 1351 (void)Dir_AddDir(defIncPath, found_path); 1352 } 1353 } 1354 } 1355 if (syspath != defsyspath) 1356 free(syspath); 1357 1358 /* 1359 * Read in the built-in rules first, followed by the specified 1360 * makefiles, or the default makefile and Makefile, in that order, 1361 * if no makefiles were given on the command line. 1362 */ 1363 if (!noBuiltins) { 1364 StringListNode *ln; 1365 1366 sysMkPath = Lst_Init(); 1367 Dir_Expand(_PATH_DEFSYSMK, 1368 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1369 sysMkPath); 1370 if (Lst_IsEmpty(sysMkPath)) 1371 Fatal("%s: no system rules (%s).", progname, 1372 _PATH_DEFSYSMK); 1373 ln = Lst_Find(sysMkPath, ReadMakefileSucceeded, NULL); 1374 if (ln == NULL) 1375 Fatal("%s: cannot open %s.", progname, 1376 (char *)LstNode_Datum(Lst_First(sysMkPath))); 1377 } 1378 1379 if (!Lst_IsEmpty(makefiles)) { 1380 StringListNode *ln; 1381 1382 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1383 if (ln != NULL) 1384 Fatal("%s: cannot open %s.", progname, 1385 (char *)LstNode_Datum(ln)); 1386 } else { 1387 (void)Var_Subst("${" MAKEFILE_PREFERENCE "}", 1388 VAR_CMD, VARE_WANTRES, &p1); 1389 /* TODO: handle errors */ 1390 (void)str2Lst_Append(makefiles, p1, NULL); 1391 (void)Lst_Find(makefiles, ReadMakefileSucceeded, NULL); 1392 free(p1); 1393 } 1394 1395 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1396 if (!noBuiltins || !printVars) { 1397 (void)Var_Subst("${.MAKE.DEPENDFILE:T}", 1398 VAR_CMD, VARE_WANTRES, &makeDependfile); 1399 /* TODO: handle errors */ 1400 doing_depend = TRUE; 1401 (void)ReadMakefile(makeDependfile); 1402 doing_depend = FALSE; 1403 } 1404 1405 if (enterFlagObj) 1406 printf("%s: Entering directory `%s'\n", progname, objdir); 1407 1408 MakeMode(NULL); 1409 1410 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1411 bmake_free(p1); 1412 1413 if (!forceJobs && !compatMake && 1414 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1415 char *value; 1416 int n; 1417 1418 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1419 /* TODO: handle errors */ 1420 n = strtol(value, NULL, 0); 1421 if (n < 1) { 1422 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1423 progname); 1424 exit(1); 1425 } 1426 if (n != maxJobs) { 1427 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1428 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1429 } 1430 maxJobs = n; 1431 maxJobTokens = maxJobs; 1432 forceJobs = TRUE; 1433 free(value); 1434 } 1435 1436 /* 1437 * Be compatible if user did not specify -j and did not explicitly 1438 * turned compatibility on 1439 */ 1440 if (!compatMake && !forceJobs) { 1441 compatMake = TRUE; 1442 } 1443 1444 if (!compatMake) 1445 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1446 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1447 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1448 1449 if (!printVars) 1450 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1451 1452 1453 /* 1454 * For compatibility, look at the directories in the VPATH variable 1455 * and add them to the search path, if the variable is defined. The 1456 * variable's value is in the same format as the PATH envariable, i.e. 1457 * <directory>:<directory>:<directory>... 1458 */ 1459 if (Var_Exists("VPATH", VAR_CMD)) { 1460 char *vpath, savec; 1461 /* 1462 * GCC stores string constants in read-only memory, but 1463 * Var_Subst will want to write this thing, so store it 1464 * in an array 1465 */ 1466 static char VPATH[] = "${VPATH}"; 1467 1468 (void)Var_Subst(VPATH, VAR_CMD, VARE_WANTRES, &vpath); 1469 /* TODO: handle errors */ 1470 path = vpath; 1471 do { 1472 /* skip to end of directory */ 1473 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1474 continue; 1475 /* Save terminator character so know when to stop */ 1476 savec = *cp; 1477 *cp = '\0'; 1478 /* Add directory to search path */ 1479 (void)Dir_AddDir(dirSearchPath, path); 1480 *cp = savec; 1481 path = cp + 1; 1482 } while (savec == ':'); 1483 free(vpath); 1484 } 1485 1486 /* 1487 * Now that all search paths have been read for suffixes et al, it's 1488 * time to add the default search path to their lists... 1489 */ 1490 Suff_DoPaths(); 1491 1492 /* 1493 * Propagate attributes through :: dependency lists. 1494 */ 1495 Targ_Propagate(); 1496 1497 /* print the initial graph, if the user requested it */ 1498 if (DEBUG(GRAPH1)) 1499 Targ_PrintGraph(1); 1500 1501 /* print the values of any variables requested by the user */ 1502 if (printVars) { 1503 doPrintVars(); 1504 outOfDate = FALSE; 1505 } else { 1506 outOfDate = runTargets(); 1507 } 1508 1509 #ifdef CLEANUP 1510 Lst_Free(variables); 1511 Lst_Free(makefiles); 1512 Lst_Destroy(create, free); 1513 #endif 1514 1515 /* print the graph now it's been processed if the user requested it */ 1516 if (DEBUG(GRAPH2)) 1517 Targ_PrintGraph(2); 1518 1519 Trace_Log(MAKEEND, 0); 1520 1521 if (enterFlagObj) 1522 printf("%s: Leaving directory `%s'\n", progname, objdir); 1523 if (enterFlag) 1524 printf("%s: Leaving directory `%s'\n", progname, curdir); 1525 1526 #ifdef USE_META 1527 meta_finish(); 1528 #endif 1529 Suff_End(); 1530 Targ_End(); 1531 Arch_End(); 1532 Var_End(); 1533 Parse_End(); 1534 Dir_End(); 1535 Job_End(); 1536 Trace_End(); 1537 1538 return outOfDate ? 1 : 0; 1539 } 1540 1541 /* Open and parse the given makefile, with all its side effects. 1542 * 1543 * Results: 1544 * 0 if ok. -1 if couldn't open file. 1545 */ 1546 static int 1547 ReadMakefile(const char *fname) 1548 { 1549 int fd; 1550 char *name, *path = NULL; 1551 1552 if (!strcmp(fname, "-")) { 1553 Parse_File(NULL /*stdin*/, -1); 1554 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1555 } else { 1556 /* if we've chdir'd, rebuild the path name */ 1557 if (strcmp(curdir, objdir) && *fname != '/') { 1558 path = str_concat3(curdir, "/", fname); 1559 fd = open(path, O_RDONLY); 1560 if (fd != -1) { 1561 fname = path; 1562 goto found; 1563 } 1564 free(path); 1565 1566 /* If curdir failed, try objdir (ala .depend) */ 1567 path = str_concat3(objdir, "/", fname); 1568 fd = open(path, O_RDONLY); 1569 if (fd != -1) { 1570 fname = path; 1571 goto found; 1572 } 1573 } else { 1574 fd = open(fname, O_RDONLY); 1575 if (fd != -1) 1576 goto found; 1577 } 1578 /* look in -I and system include directories. */ 1579 name = Dir_FindFile(fname, parseIncPath); 1580 if (!name) 1581 name = Dir_FindFile(fname, 1582 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1583 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1584 free(name); 1585 free(path); 1586 return -1; 1587 } 1588 fname = name; 1589 /* 1590 * set the MAKEFILE variable desired by System V fans -- the 1591 * placement of the setting here means it gets set to the last 1592 * makefile specified, as it is set by SysV make. 1593 */ 1594 found: 1595 if (!doing_depend) 1596 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1597 Parse_File(fname, fd); 1598 } 1599 free(path); 1600 return 0; 1601 } 1602 1603 1604 1605 /*- 1606 * Cmd_Exec -- 1607 * Execute the command in cmd, and return the output of that command 1608 * in a string. In the output, newlines are replaced with spaces. 1609 * 1610 * Results: 1611 * A string containing the output of the command, or the empty string. 1612 * *errfmt returns a format string describing the command failure, 1613 * if any, using a single %s conversion specification. 1614 * 1615 * Side Effects: 1616 * The string must be freed by the caller. 1617 */ 1618 char * 1619 Cmd_Exec(const char *cmd, const char **errfmt) 1620 { 1621 const char *args[4]; /* Args for invoking the shell */ 1622 int fds[2]; /* Pipe streams */ 1623 int cpid; /* Child PID */ 1624 int pid; /* PID from wait() */ 1625 int status; /* command exit status */ 1626 Buffer buf; /* buffer to store the result */ 1627 ssize_t bytes_read; 1628 char *res; /* result */ 1629 size_t res_len; 1630 char *cp; 1631 int savederr; /* saved errno */ 1632 1633 *errfmt = NULL; 1634 1635 if (!shellName) 1636 Shell_Init(); 1637 /* 1638 * Set up arguments for shell 1639 */ 1640 args[0] = shellName; 1641 args[1] = "-c"; 1642 args[2] = cmd; 1643 args[3] = NULL; 1644 1645 /* 1646 * Open a pipe for fetching its output 1647 */ 1648 if (pipe(fds) == -1) { 1649 *errfmt = "Couldn't create pipe for \"%s\""; 1650 goto bad; 1651 } 1652 1653 /* 1654 * Fork 1655 */ 1656 switch (cpid = vFork()) { 1657 case 0: 1658 /* 1659 * Close input side of pipe 1660 */ 1661 (void)close(fds[0]); 1662 1663 /* 1664 * Duplicate the output stream to the shell's output, then 1665 * shut the extra thing down. Note we don't fetch the error 1666 * stream...why not? Why? 1667 */ 1668 (void)dup2(fds[1], 1); 1669 (void)close(fds[1]); 1670 1671 Var_ExportVars(); 1672 1673 (void)execv(shellPath, UNCONST(args)); 1674 _exit(1); 1675 /*NOTREACHED*/ 1676 1677 case -1: 1678 *errfmt = "Couldn't exec \"%s\""; 1679 goto bad; 1680 1681 default: 1682 /* 1683 * No need for the writing half 1684 */ 1685 (void)close(fds[1]); 1686 1687 savederr = 0; 1688 Buf_Init(&buf, 0); 1689 1690 do { 1691 char result[BUFSIZ]; 1692 bytes_read = read(fds[0], result, sizeof(result)); 1693 if (bytes_read > 0) 1694 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1695 } 1696 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1697 if (bytes_read == -1) 1698 savederr = errno; 1699 1700 /* 1701 * Close the input side of the pipe. 1702 */ 1703 (void)close(fds[0]); 1704 1705 /* 1706 * Wait for the process to exit. 1707 */ 1708 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1709 JobReapChild(pid, status, FALSE); 1710 continue; 1711 } 1712 res_len = Buf_Len(&buf); 1713 res = Buf_Destroy(&buf, FALSE); 1714 1715 if (savederr != 0) 1716 *errfmt = "Couldn't read shell's output for \"%s\""; 1717 1718 if (WIFSIGNALED(status)) 1719 *errfmt = "\"%s\" exited on a signal"; 1720 else if (WEXITSTATUS(status) != 0) 1721 *errfmt = "\"%s\" returned non-zero status"; 1722 1723 /* Convert newlines to spaces. A final newline is just stripped */ 1724 if (res_len > 0 && res[res_len - 1] == '\n') 1725 res[res_len - 1] = '\0'; 1726 for (cp = res; *cp != '\0'; cp++) 1727 if (*cp == '\n') 1728 *cp = ' '; 1729 break; 1730 } 1731 return res; 1732 bad: 1733 return bmake_strdup(""); 1734 } 1735 1736 /*- 1737 * Error -- 1738 * Print an error message given its format. 1739 * 1740 * Results: 1741 * None. 1742 * 1743 * Side Effects: 1744 * The message is printed. 1745 */ 1746 void 1747 Error(const char *fmt, ...) 1748 { 1749 va_list ap; 1750 FILE *err_file; 1751 1752 err_file = debug_file; 1753 if (err_file == stdout) 1754 err_file = stderr; 1755 (void)fflush(stdout); 1756 for (;;) { 1757 va_start(ap, fmt); 1758 fprintf(err_file, "%s: ", progname); 1759 (void)vfprintf(err_file, fmt, ap); 1760 va_end(ap); 1761 (void)fprintf(err_file, "\n"); 1762 (void)fflush(err_file); 1763 if (err_file == stderr) 1764 break; 1765 err_file = stderr; 1766 } 1767 } 1768 1769 /* Produce a Fatal error message, then exit immediately. 1770 * 1771 * If jobs are running, waits for them to finish. */ 1772 void 1773 Fatal(const char *fmt, ...) 1774 { 1775 va_list ap; 1776 1777 va_start(ap, fmt); 1778 if (jobsRunning) 1779 Job_Wait(); 1780 1781 (void)fflush(stdout); 1782 (void)vfprintf(stderr, fmt, ap); 1783 va_end(ap); 1784 (void)fprintf(stderr, "\n"); 1785 (void)fflush(stderr); 1786 1787 PrintOnError(NULL, NULL); 1788 1789 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1790 Targ_PrintGraph(2); 1791 Trace_Log(MAKEERROR, 0); 1792 exit(2); /* Not 1 so -q can distinguish error */ 1793 } 1794 1795 /* 1796 * Punt -- 1797 * Major exception once jobs are being created. Kills all jobs, prints 1798 * a message and exits. 1799 * 1800 * Results: 1801 * None 1802 * 1803 * Side Effects: 1804 * All children are killed indiscriminately and the program Lib_Exits 1805 */ 1806 void 1807 Punt(const char *fmt, ...) 1808 { 1809 va_list ap; 1810 1811 va_start(ap, fmt); 1812 (void)fflush(stdout); 1813 (void)fprintf(stderr, "%s: ", progname); 1814 (void)vfprintf(stderr, fmt, ap); 1815 va_end(ap); 1816 (void)fprintf(stderr, "\n"); 1817 (void)fflush(stderr); 1818 1819 PrintOnError(NULL, NULL); 1820 1821 DieHorribly(); 1822 } 1823 1824 /*- 1825 * DieHorribly -- 1826 * Exit without giving a message. 1827 * 1828 * Results: 1829 * None 1830 * 1831 * Side Effects: 1832 * A big one... 1833 */ 1834 void 1835 DieHorribly(void) 1836 { 1837 if (jobsRunning) 1838 Job_AbortAll(); 1839 if (DEBUG(GRAPH2)) 1840 Targ_PrintGraph(2); 1841 Trace_Log(MAKEERROR, 0); 1842 exit(2); /* Not 1, so -q can distinguish error */ 1843 } 1844 1845 /* 1846 * Finish -- 1847 * Called when aborting due to errors in child shell to signal 1848 * abnormal exit. 1849 * 1850 * Results: 1851 * None 1852 * 1853 * Side Effects: 1854 * The program exits 1855 */ 1856 void 1857 Finish(int errors) 1858 /* number of errors encountered in Make_Make */ 1859 { 1860 if (dieQuietly(NULL, -1)) 1861 exit(2); 1862 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1863 } 1864 1865 /* 1866 * eunlink -- 1867 * Remove a file carefully, avoiding directories. 1868 */ 1869 int 1870 eunlink(const char *file) 1871 { 1872 struct stat st; 1873 1874 if (lstat(file, &st) == -1) 1875 return -1; 1876 1877 if (S_ISDIR(st.st_mode)) { 1878 errno = EISDIR; 1879 return -1; 1880 } 1881 return unlink(file); 1882 } 1883 1884 /* 1885 * execError -- 1886 * Print why exec failed, avoiding stdio. 1887 */ 1888 void 1889 execError(const char *af, const char *av) 1890 { 1891 #ifdef USE_IOVEC 1892 int i = 0; 1893 struct iovec iov[8]; 1894 #define IOADD(s) \ 1895 (void)(iov[i].iov_base = UNCONST(s), \ 1896 iov[i].iov_len = strlen(iov[i].iov_base), \ 1897 i++) 1898 #else 1899 #define IOADD(void)write(2, s, strlen(s)) 1900 #endif 1901 1902 IOADD(progname); 1903 IOADD(": "); 1904 IOADD(af); 1905 IOADD("("); 1906 IOADD(av); 1907 IOADD(") failed ("); 1908 IOADD(strerror(errno)); 1909 IOADD(")\n"); 1910 1911 #ifdef USE_IOVEC 1912 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1913 continue; 1914 #endif 1915 } 1916 1917 /* 1918 * usage -- 1919 * exit with usage message 1920 */ 1921 static void 1922 usage(void) 1923 { 1924 char *p; 1925 if ((p = strchr(progname, '[')) != NULL) 1926 *p = '\0'; 1927 1928 (void)fprintf(stderr, 1929 "usage: %s [-BeikNnqrstWwX] \n" 1930 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1931 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1932 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1933 progname); 1934 exit(2); 1935 } 1936 1937 /* 1938 * realpath(3) can get expensive, cache results... 1939 */ 1940 static GNode *cached_realpaths = NULL; 1941 1942 static GNode * 1943 get_cached_realpaths(void) 1944 { 1945 1946 if (!cached_realpaths) { 1947 cached_realpaths = Targ_NewGN("Realpath"); 1948 #ifndef DEBUG_REALPATH_CACHE 1949 cached_realpaths->flags = INTERNAL; 1950 #endif 1951 } 1952 1953 return cached_realpaths; 1954 } 1955 1956 /* purge any relative paths */ 1957 static void 1958 purge_cached_realpaths(void) 1959 { 1960 GNode *cache = get_cached_realpaths(); 1961 Hash_Entry *he, *nhe; 1962 Hash_Search hs; 1963 1964 he = Hash_EnumFirst(&cache->context, &hs); 1965 while (he) { 1966 nhe = Hash_EnumNext(&hs); 1967 if (he->name[0] != '/') { 1968 if (DEBUG(DIR)) 1969 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1970 Hash_DeleteEntry(&cache->context, he); 1971 } 1972 he = nhe; 1973 } 1974 } 1975 1976 char * 1977 cached_realpath(const char *pathname, char *resolved) 1978 { 1979 GNode *cache; 1980 const char *rp; 1981 char *cp; 1982 1983 if (!pathname || !pathname[0]) 1984 return NULL; 1985 1986 cache = get_cached_realpaths(); 1987 1988 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1989 /* a hit */ 1990 strncpy(resolved, rp, MAXPATHLEN); 1991 resolved[MAXPATHLEN - 1] = '\0'; 1992 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1993 Var_Set(pathname, rp, cache); 1994 } /* else should we negative-cache? */ 1995 1996 bmake_free(cp); 1997 return rp ? resolved : NULL; 1998 } 1999 2000 2001 static int 2002 addErrorCMD(void *cmdp, void *gnp) 2003 { 2004 if (cmdp == NULL) 2005 return 1; /* stop */ 2006 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2007 return 0; 2008 } 2009 2010 /* 2011 * Return true if we should die without noise. 2012 * For example our failing child was a sub-make 2013 * or failure happend elsewhere. 2014 */ 2015 int 2016 dieQuietly(GNode *gn, int bf) 2017 { 2018 static int quietly = -1; 2019 2020 if (quietly < 0) { 2021 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2022 quietly = 0; 2023 else if (bf >= 0) 2024 quietly = bf; 2025 else 2026 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2027 } 2028 return quietly; 2029 } 2030 2031 void 2032 PrintOnError(GNode *gn, const char *s) 2033 { 2034 static GNode *en = NULL; 2035 const char *expr; 2036 char *cp; 2037 2038 if (DEBUG(HASH)) { 2039 Targ_Stats(); 2040 Var_Stats(); 2041 } 2042 2043 /* we generally want to keep quiet if a sub-make died */ 2044 if (dieQuietly(gn, -1)) 2045 return; 2046 2047 if (s) 2048 printf("%s", s); 2049 2050 printf("\n%s: stopped in %s\n", progname, curdir); 2051 2052 if (en) 2053 return; /* we've been here! */ 2054 if (gn) { 2055 /* 2056 * We can print this even if there is no .ERROR target. 2057 */ 2058 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2059 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2060 Lst_ForEachUntil(gn->commands, addErrorCMD, gn); 2061 } 2062 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2063 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2064 /* TODO: handle errors */ 2065 printf("%s", cp); 2066 free(cp); 2067 fflush(stdout); 2068 2069 /* 2070 * Finally, see if there is a .ERROR target, and run it if so. 2071 */ 2072 en = Targ_FindNode(".ERROR"); 2073 if (en) { 2074 en->type |= OP_SPECIAL; 2075 Compat_Make(en, en); 2076 } 2077 } 2078 2079 void 2080 Main_ExportMAKEFLAGS(Boolean first) 2081 { 2082 static Boolean once = TRUE; 2083 const char *expr; 2084 char *s; 2085 2086 if (once != first) 2087 return; 2088 once = FALSE; 2089 2090 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2091 (void)Var_Subst(expr, VAR_CMD, VARE_WANTRES, &s); 2092 /* TODO: handle errors */ 2093 if (s[0] != '\0') { 2094 #ifdef POSIX 2095 setenv("MAKEFLAGS", s, 1); 2096 #else 2097 setenv("MAKE", s, 1); 2098 #endif 2099 } 2100 } 2101 2102 char * 2103 getTmpdir(void) 2104 { 2105 static char *tmpdir = NULL; 2106 2107 if (!tmpdir) { 2108 struct stat st; 2109 2110 /* 2111 * Honor $TMPDIR but only if it is valid. 2112 * Ensure it ends with /. 2113 */ 2114 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2115 VARE_WANTRES, &tmpdir); 2116 /* TODO: handle errors */ 2117 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2118 free(tmpdir); 2119 tmpdir = bmake_strdup(_PATH_TMP); 2120 } 2121 } 2122 return tmpdir; 2123 } 2124 2125 /* 2126 * Create and open a temp file using "pattern". 2127 * If "fnamep" is provided set it to a copy of the filename created. 2128 * Otherwise unlink the file once open. 2129 */ 2130 int 2131 mkTempFile(const char *pattern, char **fnamep) 2132 { 2133 static char *tmpdir = NULL; 2134 char tfile[MAXPATHLEN]; 2135 int fd; 2136 2137 if (!pattern) 2138 pattern = TMPPAT; 2139 if (!tmpdir) 2140 tmpdir = getTmpdir(); 2141 if (pattern[0] == '/') { 2142 snprintf(tfile, sizeof(tfile), "%s", pattern); 2143 } else { 2144 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2145 } 2146 if ((fd = mkstemp(tfile)) < 0) 2147 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2148 if (fnamep) { 2149 *fnamep = bmake_strdup(tfile); 2150 } else { 2151 unlink(tfile); /* we just want the descriptor */ 2152 } 2153 return fd; 2154 } 2155 2156 /* 2157 * Convert a string representation of a boolean. 2158 * Anything that looks like "No", "False", "Off", "0" etc, 2159 * is FALSE, otherwise TRUE. 2160 */ 2161 Boolean 2162 s2Boolean(const char *s, Boolean bf) 2163 { 2164 if (s) { 2165 switch(*s) { 2166 case '\0': /* not set - the default wins */ 2167 break; 2168 case '0': 2169 case 'F': 2170 case 'f': 2171 case 'N': 2172 case 'n': 2173 bf = FALSE; 2174 break; 2175 case 'O': 2176 case 'o': 2177 switch (s[1]) { 2178 case 'F': 2179 case 'f': 2180 bf = FALSE; 2181 break; 2182 default: 2183 bf = TRUE; 2184 break; 2185 } 2186 break; 2187 default: 2188 bf = TRUE; 2189 break; 2190 } 2191 } 2192 return bf; 2193 } 2194 2195 /* 2196 * Return a Boolean based on setting of a knob. 2197 * 2198 * If the knob is not set, the supplied default is the return value. 2199 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2200 * is FALSE, otherwise TRUE. 2201 */ 2202 Boolean 2203 getBoolean(const char *name, Boolean fallback) 2204 { 2205 char *expr = str_concat3("${", name, ":U:tl}"); 2206 char *value; 2207 Boolean res; 2208 2209 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 2210 /* TODO: handle errors */ 2211 res = s2Boolean(value, fallback); 2212 free(value); 2213 free(expr); 2214 return res; 2215 } 2216
Indexes created Thu Sep 25 16:09:42 GMT 2025