main.c revision 1.287
1 /* $NetBSD: main.c,v 1.287 2020/08/01 08:55:28 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 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.287 2020/08/01 08:55:28 rillig Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.287 2020/08/01 08:55:28 rillig Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and optional arguments 103 * for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and arguments for it. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and arguments for it. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/stat.h> 121 #ifdef MAKE_NATIVE 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <signal.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 #include <ctype.h> 134 135 #include "make.h" 136 #include "hash.h" 137 #include "dir.h" 138 #include "job.h" 139 #include "pathnames.h" 140 #include "trace.h" 141 142 #ifdef USE_IOVEC 143 #include <sys/uio.h> 144 #endif 145 146 #ifndef DEFMAXLOCAL 147 #define DEFMAXLOCAL DEFMAXJOBS 148 #endif /* DEFMAXLOCAL */ 149 150 Lst create; /* Targets to be made */ 151 time_t now; /* Time at start of make */ 152 GNode *DEFAULT; /* .DEFAULT node */ 153 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 154 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 155 156 static Boolean noBuiltins; /* -r flag */ 157 static Lst makefiles; /* ordered list of makefiles to read */ 158 static int printVars; /* -[vV] argument */ 159 #define COMPAT_VARS 1 160 #define EXPAND_VARS 2 161 static Lst variables; /* list of variables to print */ 162 int maxJobs; /* -j argument */ 163 static int maxJobTokens; /* -j argument */ 164 Boolean compatMake; /* -B argument */ 165 int debug; /* -d argument */ 166 Boolean debugVflag; /* -dV */ 167 Boolean noExecute; /* -n flag */ 168 Boolean noRecursiveExecute; /* -N flag */ 169 Boolean keepgoing; /* -k flag */ 170 Boolean queryFlag; /* -q flag */ 171 Boolean touchFlag; /* -t flag */ 172 Boolean enterFlag; /* -w flag */ 173 Boolean enterFlagObj; /* -w and objdir != srcdir */ 174 Boolean ignoreErrors; /* -i flag */ 175 Boolean beSilent; /* -s flag */ 176 Boolean oldVars; /* variable substitution style */ 177 Boolean checkEnvFirst; /* -e flag */ 178 Boolean parseWarnFatal; /* -W flag */ 179 Boolean jobServer; /* -J flag */ 180 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 181 Boolean varNoExportEnv; /* -X flag */ 182 Boolean doing_depend; /* Set while reading .depend */ 183 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 184 static const char * tracefile; 185 static void MainParseArgs(int, char **); 186 static int ReadMakefile(const void *, const void *); 187 static void usage(void) MAKE_ATTR_DEAD; 188 static void purge_cached_realpaths(void); 189 190 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 191 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 192 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 193 char *progname; /* the program name */ 194 char *makeDependfile; 195 pid_t myPid; 196 int makelevel; 197 198 FILE *debug_file; 199 200 Boolean forceJobs = FALSE; 201 202 extern Lst parseIncPath; 203 204 /* 205 * For compatibility with the POSIX version of MAKEFLAGS that includes 206 * all the options with out -, convert flags to -f -l -a -g -s. 207 */ 208 static char * 209 explode(const char *flags) 210 { 211 size_t len; 212 char *nf, *st; 213 const char *f; 214 215 if (flags == NULL) 216 return NULL; 217 218 for (f = flags; *f; f++) 219 if (!isalpha((unsigned char)*f)) 220 break; 221 222 if (*f) 223 return bmake_strdup(flags); 224 225 len = strlen(flags); 226 st = nf = bmake_malloc(len * 3 + 1); 227 while (*flags) { 228 *nf++ = '-'; 229 *nf++ = *flags++; 230 *nf++ = ' '; 231 } 232 *nf = '\0'; 233 return st; 234 } 235 236 static void 237 parse_debug_options(const char *argvalue) 238 { 239 const char *modules; 240 const char *mode; 241 char *fname; 242 int len; 243 244 for (modules = argvalue; *modules; ++modules) { 245 switch (*modules) { 246 case 'A': 247 debug = ~(0|DEBUG_LINT); 248 break; 249 case 'a': 250 debug |= DEBUG_ARCH; 251 break; 252 case 'C': 253 debug |= DEBUG_CWD; 254 break; 255 case 'c': 256 debug |= DEBUG_COND; 257 break; 258 case 'd': 259 debug |= DEBUG_DIR; 260 break; 261 case 'e': 262 debug |= DEBUG_ERROR; 263 break; 264 case 'f': 265 debug |= DEBUG_FOR; 266 break; 267 case 'g': 268 if (modules[1] == '1') { 269 debug |= DEBUG_GRAPH1; 270 ++modules; 271 } 272 else if (modules[1] == '2') { 273 debug |= DEBUG_GRAPH2; 274 ++modules; 275 } 276 else if (modules[1] == '3') { 277 debug |= DEBUG_GRAPH3; 278 ++modules; 279 } 280 break; 281 case 'h': 282 debug |= DEBUG_HASH; 283 break; 284 case 'j': 285 debug |= DEBUG_JOB; 286 break; 287 case 'L': 288 debug |= DEBUG_LINT; 289 break; 290 case 'l': 291 debug |= DEBUG_LOUD; 292 break; 293 case 'M': 294 debug |= DEBUG_META; 295 break; 296 case 'm': 297 debug |= DEBUG_MAKE; 298 break; 299 case 'n': 300 debug |= DEBUG_SCRIPT; 301 break; 302 case 'p': 303 debug |= DEBUG_PARSE; 304 break; 305 case 's': 306 debug |= DEBUG_SUFF; 307 break; 308 case 't': 309 debug |= DEBUG_TARG; 310 break; 311 case 'V': 312 debugVflag = TRUE; 313 break; 314 case 'v': 315 debug |= DEBUG_VAR; 316 break; 317 case 'x': 318 debug |= DEBUG_SHELL; 319 break; 320 case 'F': 321 if (debug_file != stdout && debug_file != stderr) 322 fclose(debug_file); 323 if (*++modules == '+') { 324 modules++; 325 mode = "a"; 326 } else 327 mode = "w"; 328 if (strcmp(modules, "stdout") == 0) { 329 debug_file = stdout; 330 goto debug_setbuf; 331 } 332 if (strcmp(modules, "stderr") == 0) { 333 debug_file = stderr; 334 goto debug_setbuf; 335 } 336 len = strlen(modules); 337 fname = bmake_malloc(len + 20); 338 memcpy(fname, modules, len + 1); 339 /* Let the filename be modified by the pid */ 340 if (strcmp(fname + len - 3, ".%d") == 0) 341 snprintf(fname + len - 2, 20, "%d", getpid()); 342 debug_file = fopen(fname, mode); 343 if (!debug_file) { 344 fprintf(stderr, "Cannot open debug file %s\n", 345 fname); 346 usage(); 347 } 348 free(fname); 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 /*- 392 * MainParseArgs -- 393 * Parse a given argument vector. Called from main() and from 394 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 395 * 396 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 397 * 398 * Results: 399 * None 400 * 401 * Side Effects: 402 * Various global and local flags will be set depending on the flags 403 * given 404 */ 405 static void 406 MainParseArgs(int argc, char **argv) 407 { 408 char *p; 409 int c = '?'; 410 int arginc; 411 char *argvalue; 412 const char *getopt_def; 413 struct stat sa, sb; 414 char *optscan; 415 Boolean inOption, dashDash = FALSE; 416 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 417 418 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w" 419 /* Can't actually use getopt(3) because rescanning is not portable */ 420 421 getopt_def = OPTFLAGS; 422 rearg: 423 inOption = FALSE; 424 optscan = NULL; 425 while(argc > 1) { 426 char *getopt_spec; 427 if(!inOption) 428 optscan = argv[1]; 429 c = *optscan++; 430 arginc = 0; 431 if(inOption) { 432 if(c == '\0') { 433 ++argv; 434 --argc; 435 inOption = FALSE; 436 continue; 437 } 438 } else { 439 if (c != '-' || dashDash) 440 break; 441 inOption = TRUE; 442 c = *optscan++; 443 } 444 /* '-' found at some earlier point */ 445 getopt_spec = strchr(getopt_def, c); 446 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 447 /* -<something> found, and <something> should have an arg */ 448 inOption = FALSE; 449 arginc = 1; 450 argvalue = optscan; 451 if(*argvalue == '\0') { 452 if (argc < 3) 453 goto noarg; 454 argvalue = argv[2]; 455 arginc = 2; 456 } 457 } else { 458 argvalue = NULL; 459 } 460 switch(c) { 461 case '\0': 462 arginc = 1; 463 inOption = FALSE; 464 break; 465 case 'B': 466 compatMake = TRUE; 467 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 468 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 469 break; 470 case 'C': 471 if (chdir(argvalue) == -1) { 472 (void)fprintf(stderr, 473 "%s: chdir %s: %s\n", 474 progname, argvalue, 475 strerror(errno)); 476 exit(1); 477 } 478 if (getcwd(curdir, MAXPATHLEN) == NULL) { 479 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 480 exit(2); 481 } 482 if (!is_relpath(argvalue) && 483 stat(argvalue, &sa) != -1 && 484 stat(curdir, &sb) != -1 && 485 sa.st_ino == sb.st_ino && 486 sa.st_dev == sb.st_dev) 487 strncpy(curdir, argvalue, MAXPATHLEN); 488 ignorePWD = TRUE; 489 break; 490 case 'D': 491 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 492 Var_Set(argvalue, "1", VAR_GLOBAL); 493 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 494 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 495 break; 496 case 'I': 497 if (argvalue == NULL) goto noarg; 498 Parse_AddIncludeDir(argvalue); 499 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 500 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 501 break; 502 case 'J': 503 if (argvalue == NULL) goto noarg; 504 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 505 (void)fprintf(stderr, 506 "%s: internal error -- J option malformed (%s)\n", 507 progname, argvalue); 508 usage(); 509 } 510 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 511 (fcntl(jp_1, F_GETFD, 0) < 0)) { 512 #if 0 513 (void)fprintf(stderr, 514 "%s: ###### warning -- J descriptors were closed!\n", 515 progname); 516 exit(2); 517 #endif 518 jp_0 = -1; 519 jp_1 = -1; 520 compatMake = TRUE; 521 } else { 522 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 523 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 524 jobServer = TRUE; 525 } 526 break; 527 case 'N': 528 noExecute = TRUE; 529 noRecursiveExecute = TRUE; 530 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 531 break; 532 case 'S': 533 keepgoing = FALSE; 534 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 535 break; 536 case 'T': 537 if (argvalue == NULL) goto noarg; 538 tracefile = bmake_strdup(argvalue); 539 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 540 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 541 break; 542 case 'V': 543 case 'v': 544 if (argvalue == NULL) goto noarg; 545 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 546 (void)Lst_AtEnd(variables, argvalue); 547 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 548 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 549 break; 550 case 'W': 551 parseWarnFatal = TRUE; 552 break; 553 case 'X': 554 varNoExportEnv = TRUE; 555 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 556 break; 557 case 'd': 558 if (argvalue == NULL) goto noarg; 559 /* If '-d-opts' don't pass to children */ 560 if (argvalue[0] == '-') 561 argvalue++; 562 else { 563 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 564 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 565 } 566 parse_debug_options(argvalue); 567 break; 568 case 'e': 569 checkEnvFirst = TRUE; 570 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 571 break; 572 case 'f': 573 if (argvalue == NULL) goto noarg; 574 (void)Lst_AtEnd(makefiles, argvalue); 575 break; 576 case 'i': 577 ignoreErrors = TRUE; 578 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 579 break; 580 case 'j': 581 if (argvalue == NULL) goto noarg; 582 forceJobs = TRUE; 583 maxJobs = strtol(argvalue, &p, 0); 584 if (*p != '\0' || maxJobs < 1) { 585 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 586 progname); 587 exit(1); 588 } 589 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 590 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 591 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 592 maxJobTokens = maxJobs; 593 break; 594 case 'k': 595 keepgoing = TRUE; 596 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 597 break; 598 case 'm': 599 if (argvalue == NULL) goto noarg; 600 /* look for magic parent directory search string */ 601 if (strncmp(".../", argvalue, 4) == 0) { 602 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 603 found_path, sizeof(found_path))) 604 break; /* nothing doing */ 605 (void)Dir_AddDir(sysIncPath, found_path); 606 } else { 607 (void)Dir_AddDir(sysIncPath, argvalue); 608 } 609 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 610 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 611 break; 612 case 'n': 613 noExecute = TRUE; 614 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 615 break; 616 case 'q': 617 queryFlag = TRUE; 618 /* Kind of nonsensical, wot? */ 619 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 620 break; 621 case 'r': 622 noBuiltins = TRUE; 623 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 624 break; 625 case 's': 626 beSilent = TRUE; 627 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 628 break; 629 case 't': 630 touchFlag = TRUE; 631 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 632 break; 633 case 'w': 634 enterFlag = TRUE; 635 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 636 break; 637 case '-': 638 dashDash = TRUE; 639 break; 640 default: 641 case '?': 642 usage(); 643 } 644 argv += arginc; 645 argc -= arginc; 646 } 647 648 oldVars = TRUE; 649 650 /* 651 * See if the rest of the arguments are variable assignments and 652 * perform them if so. Else take them to be targets and stuff them 653 * on the end of the "create" list. 654 */ 655 for (; argc > 1; ++argv, --argc) 656 if (Parse_IsVar(argv[1])) { 657 Parse_DoVar(argv[1], VAR_CMD); 658 } else { 659 if (!*argv[1]) 660 Punt("illegal (null) argument."); 661 if (*argv[1] == '-' && !dashDash) 662 goto rearg; 663 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 664 } 665 666 return; 667 noarg: 668 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 669 progname, c); 670 usage(); 671 } 672 673 /*- 674 * Main_ParseArgLine -- 675 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 676 * is encountered and by main() when reading the .MAKEFLAGS envariable. 677 * Takes a line of arguments and breaks it into its 678 * component words and passes those words and the number of them to the 679 * MainParseArgs function. 680 * The line should have all its leading whitespace removed. 681 * 682 * Input: 683 * line Line to fracture 684 * 685 * Results: 686 * None 687 * 688 * Side Effects: 689 * Only those that come from the various arguments. 690 */ 691 void 692 Main_ParseArgLine(const char *line) 693 { 694 char **argv; /* Manufactured argument vector */ 695 int argc; /* Number of arguments in argv */ 696 char *args; /* Space used by the args */ 697 char *p1; 698 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 699 700 if (line == NULL) 701 return; 702 for (; *line == ' '; ++line) 703 continue; 704 if (!*line) 705 return; 706 707 char *buf = str_concat(argv0, line, STR_ADDSPACE); 708 free(p1); 709 710 argv = brk_string(buf, &argc, TRUE, &args); 711 if (argv == NULL) { 712 Error("Unterminated quoted string [%s]", buf); 713 free(buf); 714 return; 715 } 716 free(buf); 717 MainParseArgs(argc, argv); 718 719 free(args); 720 free(argv); 721 } 722 723 Boolean 724 Main_SetObjdir(const char *fmt, ...) 725 { 726 struct stat sb; 727 char *path; 728 char buf[MAXPATHLEN + 1]; 729 char buf2[MAXPATHLEN + 1]; 730 Boolean rc = FALSE; 731 va_list ap; 732 733 va_start(ap, fmt); 734 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 735 va_end(ap); 736 737 if (path[0] != '/') { 738 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 739 path = buf2; 740 } 741 742 /* look for the directory and try to chdir there */ 743 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 744 if (chdir(path)) { 745 (void)fprintf(stderr, "make warning: %s: %s.\n", 746 path, strerror(errno)); 747 } else { 748 strncpy(objdir, path, MAXPATHLEN); 749 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 750 setenv("PWD", objdir, 1); 751 Dir_InitDot(); 752 purge_cached_realpaths(); 753 rc = TRUE; 754 if (enterFlag && strcmp(objdir, curdir) != 0) 755 enterFlagObj = TRUE; 756 } 757 } 758 759 return rc; 760 } 761 762 static Boolean 763 Main_SetVarObjdir(const char *var, const char *suffix) 764 { 765 char *p, *path, *xpath; 766 767 if ((path = Var_Value(var, VAR_CMD, &p)) == NULL || 768 *path == '\0') 769 return FALSE; 770 771 /* expand variable substitutions */ 772 if (strchr(path, '$') != 0) 773 xpath = Var_Subst(path, VAR_GLOBAL, VARE_WANTRES); 774 else 775 xpath = path; 776 777 (void)Main_SetObjdir("%s%s", xpath, suffix); 778 779 if (xpath != path) 780 free(xpath); 781 free(p); 782 return TRUE; 783 } 784 785 /*- 786 * ReadAllMakefiles -- 787 * wrapper around ReadMakefile() to read all. 788 * 789 * Results: 790 * TRUE if ok, FALSE on error 791 */ 792 static int 793 ReadAllMakefiles(const void *p, const void *q) 794 { 795 return ReadMakefile(p, q) == 0; 796 } 797 798 int 799 str2Lst_Append(Lst lp, char *str, const char *sep) 800 { 801 char *cp; 802 int n; 803 804 if (!sep) 805 sep = " \t"; 806 807 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 808 (void)Lst_AtEnd(lp, cp); 809 n++; 810 } 811 return n; 812 } 813 814 #ifdef SIGINFO 815 /*ARGSUSED*/ 816 static void 817 siginfo(int signo MAKE_ATTR_UNUSED) 818 { 819 char dir[MAXPATHLEN]; 820 char str[2 * MAXPATHLEN]; 821 int len; 822 if (getcwd(dir, sizeof(dir)) == NULL) 823 return; 824 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 825 if (len > 0) 826 (void)write(STDERR_FILENO, str, (size_t)len); 827 } 828 #endif 829 830 /* 831 * Allow makefiles some control over the mode we run in. 832 */ 833 void 834 MakeMode(const char *mode) 835 { 836 char *mp = NULL; 837 838 if (!mode) 839 mode = mp = Var_Subst("${" MAKE_MODE ":tl}", 840 VAR_GLOBAL, VARE_WANTRES); 841 842 if (mode && *mode) { 843 if (strstr(mode, "compat")) { 844 compatMake = TRUE; 845 forceJobs = FALSE; 846 } 847 #if USE_META 848 if (strstr(mode, "meta")) 849 meta_mode_init(mode); 850 #endif 851 } 852 853 free(mp); 854 } 855 856 static void 857 doPrintVars(void) 858 { 859 LstNode ln; 860 Boolean expandVars; 861 862 if (printVars == EXPAND_VARS) 863 expandVars = TRUE; 864 else if (debugVflag) 865 expandVars = FALSE; 866 else 867 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 868 869 for (ln = Lst_First(variables); ln != NULL; 870 ln = Lst_Succ(ln)) { 871 char *var = (char *)Lst_Datum(ln); 872 char *value; 873 char *p1; 874 875 if (strchr(var, '$')) { 876 value = p1 = Var_Subst(var, VAR_GLOBAL, VARE_WANTRES); 877 } else if (expandVars) { 878 char tmp[128]; 879 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 880 881 if (len >= (int)sizeof(tmp)) 882 Fatal("%s: variable name too big: %s", 883 progname, var); 884 value = p1 = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 885 } else { 886 value = Var_Value(var, VAR_GLOBAL, &p1); 887 } 888 printf("%s\n", value ? value : ""); 889 free(p1); 890 } 891 } 892 893 static Boolean 894 runTargets(void) 895 { 896 Lst targs; /* target nodes to create -- passed to Make_Init */ 897 Boolean outOfDate; /* FALSE if all targets up to date */ 898 899 /* 900 * Have now read the entire graph and need to make a list of 901 * targets to create. If none was given on the command line, 902 * we consult the parsing module to find the main target(s) 903 * to create. 904 */ 905 if (Lst_IsEmpty(create)) 906 targs = Parse_MainName(); 907 else 908 targs = Targ_FindList(create, TARG_CREATE); 909 910 if (!compatMake) { 911 /* 912 * Initialize job module before traversing the graph 913 * now that any .BEGIN and .END targets have been read. 914 * This is done only if the -q flag wasn't given 915 * (to prevent the .BEGIN from being executed should 916 * it exist). 917 */ 918 if (!queryFlag) { 919 Job_Init(); 920 jobsRunning = TRUE; 921 } 922 923 /* Traverse the graph, checking on all the targets */ 924 outOfDate = Make_Run(targs); 925 } else { 926 /* 927 * Compat_Init will take care of creating all the 928 * targets as well as initializing the module. 929 */ 930 Compat_Run(targs); 931 outOfDate = FALSE; 932 } 933 Lst_Destroy(targs, NULL); 934 return outOfDate; 935 } 936 937 /*- 938 * main -- 939 * The main function, for obvious reasons. Initializes variables 940 * and a few modules, then parses the arguments give it in the 941 * environment and on the command line. Reads the system makefile 942 * followed by either Makefile, makefile or the file given by the 943 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 944 * flags it has received by then uses either the Make or the Compat 945 * module to create the initial list of targets. 946 * 947 * Results: 948 * If -q was given, exits -1 if anything was out-of-date. Else it exits 949 * 0. 950 * 951 * Side Effects: 952 * The program exits when done. Targets are created. etc. etc. etc. 953 */ 954 int 955 main(int argc, char **argv) 956 { 957 Boolean outOfDate; /* FALSE if all targets up to date */ 958 struct stat sb, sa; 959 char *p1, *path; 960 char mdpath[MAXPATHLEN]; 961 const char *machine = getenv("MACHINE"); 962 const char *machine_arch = getenv("MACHINE_ARCH"); 963 char *syspath = getenv("MAKESYSPATH"); 964 Lst sysMkPath; /* Path of sys.mk */ 965 char *cp = NULL, *start; 966 /* avoid faults on read-only strings */ 967 static char defsyspath[] = _PATH_DEFSYSPATH; 968 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 969 struct timeval rightnow; /* to initialize random seed */ 970 struct utsname utsname; 971 972 /* default to writing debug to stderr */ 973 debug_file = stderr; 974 975 #ifdef SIGINFO 976 (void)bmake_signal(SIGINFO, siginfo); 977 #endif 978 /* 979 * Set the seed to produce a different random sequence 980 * on each program execution. 981 */ 982 gettimeofday(&rightnow, NULL); 983 srandom(rightnow.tv_sec + rightnow.tv_usec); 984 985 if ((progname = strrchr(argv[0], '/')) != NULL) 986 progname++; 987 else 988 progname = argv[0]; 989 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 990 /* 991 * get rid of resource limit on file descriptors 992 */ 993 { 994 struct rlimit rl; 995 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 996 rl.rlim_cur != rl.rlim_max) { 997 rl.rlim_cur = rl.rlim_max; 998 (void)setrlimit(RLIMIT_NOFILE, &rl); 999 } 1000 } 1001 #endif 1002 1003 if (uname(&utsname) == -1) { 1004 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1005 strerror(errno)); 1006 exit(2); 1007 } 1008 1009 /* 1010 * Get the name of this type of MACHINE from utsname 1011 * so we can share an executable for similar machines. 1012 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1013 * 1014 * Note that both MACHINE and MACHINE_ARCH are decided at 1015 * run-time. 1016 */ 1017 if (!machine) { 1018 #ifdef MAKE_NATIVE 1019 machine = utsname.machine; 1020 #else 1021 #ifdef MAKE_MACHINE 1022 machine = MAKE_MACHINE; 1023 #else 1024 machine = "unknown"; 1025 #endif 1026 #endif 1027 } 1028 1029 if (!machine_arch) { 1030 #ifdef MAKE_NATIVE 1031 static char machine_arch_buf[sizeof(utsname.machine)]; 1032 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1033 size_t len = sizeof(machine_arch_buf); 1034 1035 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1036 &len, NULL, 0) < 0) { 1037 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1038 strerror(errno)); 1039 exit(2); 1040 } 1041 1042 machine_arch = machine_arch_buf; 1043 #else 1044 #ifndef MACHINE_ARCH 1045 #ifdef MAKE_MACHINE_ARCH 1046 machine_arch = MAKE_MACHINE_ARCH; 1047 #else 1048 machine_arch = "unknown"; 1049 #endif 1050 #else 1051 machine_arch = MACHINE_ARCH; 1052 #endif 1053 #endif 1054 } 1055 1056 myPid = getpid(); /* remember this for vFork() */ 1057 1058 /* 1059 * Just in case MAKEOBJDIR wants us to do something tricky. 1060 */ 1061 Var_Init(); /* Initialize the lists of variables for 1062 * parsing arguments */ 1063 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1064 Var_Set("MACHINE", machine, VAR_GLOBAL); 1065 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1066 #ifdef MAKE_VERSION 1067 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1068 #endif 1069 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1070 /* 1071 * This is the traditional preference for makefiles. 1072 */ 1073 #ifndef MAKEFILE_PREFERENCE_LIST 1074 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1075 #endif 1076 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1077 VAR_GLOBAL); 1078 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1079 1080 create = Lst_Init(FALSE); 1081 makefiles = Lst_Init(FALSE); 1082 printVars = 0; 1083 debugVflag = FALSE; 1084 variables = Lst_Init(FALSE); 1085 beSilent = FALSE; /* Print commands as executed */ 1086 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1087 noExecute = FALSE; /* Execute all commands */ 1088 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1089 keepgoing = FALSE; /* Stop on error */ 1090 allPrecious = FALSE; /* Remove targets when interrupted */ 1091 deleteOnError = FALSE; /* Historical default behavior */ 1092 queryFlag = FALSE; /* This is not just a check-run */ 1093 noBuiltins = FALSE; /* Read the built-in rules */ 1094 touchFlag = FALSE; /* Actually update targets */ 1095 debug = 0; /* No debug verbosity, please. */ 1096 jobsRunning = FALSE; 1097 1098 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1099 maxJobTokens = maxJobs; 1100 compatMake = FALSE; /* No compat mode */ 1101 ignorePWD = FALSE; 1102 1103 /* 1104 * Initialize the parsing, directory and variable modules to prepare 1105 * for the reading of inclusion paths and variable settings on the 1106 * command line 1107 */ 1108 1109 /* 1110 * Initialize various variables. 1111 * MAKE also gets this name, for compatibility 1112 * .MAKEFLAGS gets set to the empty string just in case. 1113 * MFLAGS also gets initialized empty, for compatibility. 1114 */ 1115 Parse_Init(); 1116 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1117 /* 1118 * Leave alone if it is an absolute path, or if it does 1119 * not contain a '/' in which case we need to find it in 1120 * the path, like execvp(3) and the shells do. 1121 */ 1122 p1 = argv[0]; 1123 } else { 1124 /* 1125 * A relative path, canonicalize it. 1126 */ 1127 p1 = cached_realpath(argv[0], mdpath); 1128 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1129 p1 = argv[0]; /* realpath failed */ 1130 } 1131 } 1132 Var_Set("MAKE", p1, VAR_GLOBAL); 1133 Var_Set(".MAKE", p1, VAR_GLOBAL); 1134 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1135 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1136 Var_Set("MFLAGS", "", VAR_GLOBAL); 1137 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1138 /* some makefiles need to know this */ 1139 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1140 1141 /* 1142 * Set some other useful macros 1143 */ 1144 { 1145 char tmp[64], *ep; 1146 1147 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1148 if (makelevel < 0) 1149 makelevel = 0; 1150 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1151 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1152 snprintf(tmp, sizeof(tmp), "%u", myPid); 1153 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1154 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1155 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1156 } 1157 if (makelevel > 0) { 1158 char pn[1024]; 1159 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1160 progname = bmake_strdup(pn); 1161 } 1162 1163 #ifdef USE_META 1164 meta_init(); 1165 #endif 1166 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1167 1168 /* 1169 * First snag any flags out of the MAKE environment variable. 1170 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1171 * in a different format). 1172 */ 1173 #ifdef POSIX 1174 p1 = explode(getenv("MAKEFLAGS")); 1175 Main_ParseArgLine(p1); 1176 free(p1); 1177 #else 1178 Main_ParseArgLine(getenv("MAKE")); 1179 #endif 1180 1181 /* 1182 * Find where we are (now). 1183 * We take care of PWD for the automounter below... 1184 */ 1185 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1186 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1187 progname, strerror(errno)); 1188 exit(2); 1189 } 1190 1191 MainParseArgs(argc, argv); 1192 1193 if (enterFlag) 1194 printf("%s: Entering directory `%s'\n", progname, curdir); 1195 1196 /* 1197 * Verify that cwd is sane. 1198 */ 1199 if (stat(curdir, &sa) == -1) { 1200 (void)fprintf(stderr, "%s: %s: %s.\n", 1201 progname, curdir, strerror(errno)); 1202 exit(2); 1203 } 1204 1205 /* 1206 * All this code is so that we know where we are when we start up 1207 * on a different machine with pmake. 1208 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1209 * since the value of curdir can vary depending on how we got 1210 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1211 * or via subdir.mk in which case its likely a shell which does 1212 * not provide it. 1213 * So, to stop it breaking this case only, we ignore PWD if 1214 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1215 */ 1216 #ifndef NO_PWD_OVERRIDE 1217 if (!ignorePWD) { 1218 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1219 1220 if ((pwd = getenv("PWD")) != NULL && 1221 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1222 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1223 VAR_CMD, &ptmp2); 1224 1225 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1226 if (stat(pwd, &sb) == 0 && 1227 sa.st_ino == sb.st_ino && 1228 sa.st_dev == sb.st_dev) 1229 (void)strncpy(curdir, pwd, MAXPATHLEN); 1230 } 1231 } 1232 free(ptmp1); 1233 free(ptmp2); 1234 } 1235 #endif 1236 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1237 1238 /* 1239 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1240 * MAKEOBJDIR is set in the environment, try only that value 1241 * and fall back to .CURDIR if it does not exist. 1242 * 1243 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1244 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1245 * of these paths exist, just use .CURDIR. 1246 */ 1247 Dir_Init(curdir); 1248 (void)Main_SetObjdir("%s", curdir); 1249 1250 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1251 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1252 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1253 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1254 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1255 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1256 1257 /* 1258 * Initialize archive, target and suffix modules in preparation for 1259 * parsing the makefile(s) 1260 */ 1261 Arch_Init(); 1262 Targ_Init(); 1263 Suff_Init(); 1264 Trace_Init(tracefile); 1265 1266 DEFAULT = NULL; 1267 (void)time(&now); 1268 1269 Trace_Log(MAKESTART, NULL); 1270 1271 /* 1272 * Set up the .TARGETS variable to contain the list of targets to be 1273 * created. If none specified, make the variable empty -- the parser 1274 * will fill the thing in with the default or .MAIN target. 1275 */ 1276 if (!Lst_IsEmpty(create)) { 1277 LstNode ln; 1278 1279 for (ln = Lst_First(create); ln != NULL; 1280 ln = Lst_Succ(ln)) { 1281 char *name = (char *)Lst_Datum(ln); 1282 1283 Var_Append(".TARGETS", name, VAR_GLOBAL); 1284 } 1285 } else 1286 Var_Set(".TARGETS", "", VAR_GLOBAL); 1287 1288 1289 /* 1290 * If no user-supplied system path was given (through the -m option) 1291 * add the directories from the DEFSYSPATH (more than one may be given 1292 * as dir1:...:dirn) to the system include path. 1293 */ 1294 if (syspath == NULL || *syspath == '\0') 1295 syspath = defsyspath; 1296 else 1297 syspath = bmake_strdup(syspath); 1298 1299 for (start = syspath; *start != '\0'; start = cp) { 1300 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1301 continue; 1302 if (*cp == ':') { 1303 *cp++ = '\0'; 1304 } 1305 /* look for magic parent directory search string */ 1306 if (strncmp(".../", start, 4) != 0) { 1307 (void)Dir_AddDir(defIncPath, start); 1308 } else { 1309 if (Dir_FindHereOrAbove(curdir, start+4, 1310 found_path, sizeof(found_path))) { 1311 (void)Dir_AddDir(defIncPath, found_path); 1312 } 1313 } 1314 } 1315 if (syspath != defsyspath) 1316 free(syspath); 1317 1318 /* 1319 * Read in the built-in rules first, followed by the specified 1320 * makefile, if it was (makefile != NULL), or the default 1321 * makefile and Makefile, in that order, if it wasn't. 1322 */ 1323 if (!noBuiltins) { 1324 LstNode ln; 1325 1326 sysMkPath = Lst_Init(FALSE); 1327 Dir_Expand(_PATH_DEFSYSMK, 1328 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1329 sysMkPath); 1330 if (Lst_IsEmpty(sysMkPath)) 1331 Fatal("%s: no system rules (%s).", progname, 1332 _PATH_DEFSYSMK); 1333 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1334 if (ln == NULL) 1335 Fatal("%s: cannot open %s.", progname, 1336 (char *)Lst_Datum(ln)); 1337 } 1338 1339 if (!Lst_IsEmpty(makefiles)) { 1340 LstNode ln; 1341 1342 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1343 if (ln != NULL) 1344 Fatal("%s: cannot open %s.", progname, 1345 (char *)Lst_Datum(ln)); 1346 } else { 1347 p1 = Var_Subst("${" MAKEFILE_PREFERENCE "}", 1348 VAR_CMD, VARE_WANTRES); 1349 if (p1) { 1350 (void)str2Lst_Append(makefiles, p1, NULL); 1351 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1352 free(p1); 1353 } 1354 } 1355 1356 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1357 if (!noBuiltins || !printVars) { 1358 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE:T}", 1359 VAR_CMD, VARE_WANTRES); 1360 doing_depend = TRUE; 1361 (void)ReadMakefile(makeDependfile, NULL); 1362 doing_depend = FALSE; 1363 } 1364 1365 if (enterFlagObj) 1366 printf("%s: Entering directory `%s'\n", progname, objdir); 1367 1368 MakeMode(NULL); 1369 1370 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1371 free(p1); 1372 1373 if (!forceJobs && !compatMake && 1374 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1375 char *value; 1376 int n; 1377 1378 value = Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES); 1379 n = strtol(value, NULL, 0); 1380 if (n < 1) { 1381 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1382 progname); 1383 exit(1); 1384 } 1385 if (n != maxJobs) { 1386 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1387 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1388 } 1389 maxJobs = n; 1390 maxJobTokens = maxJobs; 1391 forceJobs = TRUE; 1392 free(value); 1393 } 1394 1395 /* 1396 * Be compatible if user did not specify -j and did not explicitly 1397 * turned compatibility on 1398 */ 1399 if (!compatMake && !forceJobs) { 1400 compatMake = TRUE; 1401 } 1402 1403 if (!compatMake) 1404 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1405 if (DEBUG(JOB)) 1406 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1407 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1408 1409 if (!printVars) 1410 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1411 1412 1413 /* 1414 * For compatibility, look at the directories in the VPATH variable 1415 * and add them to the search path, if the variable is defined. The 1416 * variable's value is in the same format as the PATH envariable, i.e. 1417 * <directory>:<directory>:<directory>... 1418 */ 1419 if (Var_Exists("VPATH", VAR_CMD)) { 1420 char *vpath, savec; 1421 /* 1422 * GCC stores string constants in read-only memory, but 1423 * Var_Subst will want to write this thing, so store it 1424 * in an array 1425 */ 1426 static char VPATH[] = "${VPATH}"; 1427 1428 vpath = Var_Subst(VPATH, VAR_CMD, VARE_WANTRES); 1429 path = vpath; 1430 do { 1431 /* skip to end of directory */ 1432 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1433 continue; 1434 /* Save terminator character so know when to stop */ 1435 savec = *cp; 1436 *cp = '\0'; 1437 /* Add directory to search path */ 1438 (void)Dir_AddDir(dirSearchPath, path); 1439 *cp = savec; 1440 path = cp + 1; 1441 } while (savec == ':'); 1442 free(vpath); 1443 } 1444 1445 /* 1446 * Now that all search paths have been read for suffixes et al, it's 1447 * time to add the default search path to their lists... 1448 */ 1449 Suff_DoPaths(); 1450 1451 /* 1452 * Propagate attributes through :: dependency lists. 1453 */ 1454 Targ_Propagate(); 1455 1456 /* print the initial graph, if the user requested it */ 1457 if (DEBUG(GRAPH1)) 1458 Targ_PrintGraph(1); 1459 1460 /* print the values of any variables requested by the user */ 1461 if (printVars) { 1462 doPrintVars(); 1463 outOfDate = FALSE; 1464 } else { 1465 outOfDate = runTargets(); 1466 } 1467 1468 #ifdef CLEANUP 1469 Lst_Destroy(variables, NULL); 1470 Lst_Destroy(makefiles, NULL); 1471 Lst_Destroy(create, (FreeProc *)free); 1472 #endif 1473 1474 /* print the graph now it's been processed if the user requested it */ 1475 if (DEBUG(GRAPH2)) 1476 Targ_PrintGraph(2); 1477 1478 Trace_Log(MAKEEND, 0); 1479 1480 if (enterFlagObj) 1481 printf("%s: Leaving directory `%s'\n", progname, objdir); 1482 if (enterFlag) 1483 printf("%s: Leaving directory `%s'\n", progname, curdir); 1484 1485 #ifdef USE_META 1486 meta_finish(); 1487 #endif 1488 Suff_End(); 1489 Targ_End(); 1490 Arch_End(); 1491 Var_End(); 1492 Parse_End(); 1493 Dir_End(); 1494 Job_End(); 1495 Trace_End(); 1496 1497 return outOfDate ? 1 : 0; 1498 } 1499 1500 /*- 1501 * ReadMakefile -- 1502 * Open and parse the given makefile. 1503 * 1504 * Results: 1505 * 0 if ok. -1 if couldn't open file. 1506 * 1507 * Side Effects: 1508 * lots 1509 */ 1510 static int 1511 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1512 { 1513 const char *fname = p; /* makefile to read */ 1514 int fd; 1515 size_t len = MAXPATHLEN; 1516 char *name, *path = bmake_malloc(len); 1517 1518 if (!strcmp(fname, "-")) { 1519 Parse_File(NULL /*stdin*/, -1); 1520 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1521 } else { 1522 /* if we've chdir'd, rebuild the path name */ 1523 if (strcmp(curdir, objdir) && *fname != '/') { 1524 size_t plen = strlen(curdir) + strlen(fname) + 2; 1525 if (len < plen) 1526 path = bmake_realloc(path, len = 2 * plen); 1527 1528 (void)snprintf(path, len, "%s/%s", curdir, fname); 1529 fd = open(path, O_RDONLY); 1530 if (fd != -1) { 1531 fname = path; 1532 goto found; 1533 } 1534 1535 /* If curdir failed, try objdir (ala .depend) */ 1536 plen = strlen(objdir) + strlen(fname) + 2; 1537 if (len < plen) 1538 path = bmake_realloc(path, len = 2 * plen); 1539 (void)snprintf(path, len, "%s/%s", objdir, fname); 1540 fd = open(path, O_RDONLY); 1541 if (fd != -1) { 1542 fname = path; 1543 goto found; 1544 } 1545 } else { 1546 fd = open(fname, O_RDONLY); 1547 if (fd != -1) 1548 goto found; 1549 } 1550 /* look in -I and system include directories. */ 1551 name = Dir_FindFile(fname, parseIncPath); 1552 if (!name) 1553 name = Dir_FindFile(fname, 1554 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1555 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1556 free(name); 1557 free(path); 1558 return -1; 1559 } 1560 fname = name; 1561 /* 1562 * set the MAKEFILE variable desired by System V fans -- the 1563 * placement of the setting here means it gets set to the last 1564 * makefile specified, as it is set by SysV make. 1565 */ 1566 found: 1567 if (!doing_depend) 1568 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1569 Parse_File(fname, fd); 1570 } 1571 free(path); 1572 return 0; 1573 } 1574 1575 1576 1577 /*- 1578 * Cmd_Exec -- 1579 * Execute the command in cmd, and return the output of that command 1580 * in a string. 1581 * 1582 * Results: 1583 * A string containing the output of the command, or the empty string 1584 * If errnum is not NULL, it contains the reason for the command failure 1585 * 1586 * Side Effects: 1587 * The string must be freed by the caller. 1588 */ 1589 char * 1590 Cmd_Exec(const char *cmd, const char **errnum) 1591 { 1592 const char *args[4]; /* Args for invoking the shell */ 1593 int fds[2]; /* Pipe streams */ 1594 int cpid; /* Child PID */ 1595 int pid; /* PID from wait() */ 1596 char *res; /* result */ 1597 int status; /* command exit status */ 1598 Buffer buf; /* buffer to store the result */ 1599 char *cp; 1600 int cc; /* bytes read, or -1 */ 1601 int savederr; /* saved errno */ 1602 1603 1604 *errnum = NULL; 1605 1606 if (!shellName) 1607 Shell_Init(); 1608 /* 1609 * Set up arguments for shell 1610 */ 1611 args[0] = shellName; 1612 args[1] = "-c"; 1613 args[2] = cmd; 1614 args[3] = NULL; 1615 1616 /* 1617 * Open a pipe for fetching its output 1618 */ 1619 if (pipe(fds) == -1) { 1620 *errnum = "Couldn't create pipe for \"%s\""; 1621 goto bad; 1622 } 1623 1624 /* 1625 * Fork 1626 */ 1627 switch (cpid = vFork()) { 1628 case 0: 1629 /* 1630 * Close input side of pipe 1631 */ 1632 (void)close(fds[0]); 1633 1634 /* 1635 * Duplicate the output stream to the shell's output, then 1636 * shut the extra thing down. Note we don't fetch the error 1637 * stream...why not? Why? 1638 */ 1639 (void)dup2(fds[1], 1); 1640 (void)close(fds[1]); 1641 1642 Var_ExportVars(); 1643 1644 (void)execv(shellPath, UNCONST(args)); 1645 _exit(1); 1646 /*NOTREACHED*/ 1647 1648 case -1: 1649 *errnum = "Couldn't exec \"%s\""; 1650 goto bad; 1651 1652 default: 1653 /* 1654 * No need for the writing half 1655 */ 1656 (void)close(fds[1]); 1657 1658 savederr = 0; 1659 Buf_Init(&buf, 0); 1660 1661 do { 1662 char result[BUFSIZ]; 1663 cc = read(fds[0], result, sizeof(result)); 1664 if (cc > 0) 1665 Buf_AddBytes(&buf, cc, result); 1666 } 1667 while (cc > 0 || (cc == -1 && errno == EINTR)); 1668 if (cc == -1) 1669 savederr = errno; 1670 1671 /* 1672 * Close the input side of the pipe. 1673 */ 1674 (void)close(fds[0]); 1675 1676 /* 1677 * Wait for the process to exit. 1678 */ 1679 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1680 JobReapChild(pid, status, FALSE); 1681 continue; 1682 } 1683 cc = Buf_Size(&buf); 1684 res = Buf_Destroy(&buf, FALSE); 1685 1686 if (savederr != 0) 1687 *errnum = "Couldn't read shell's output for \"%s\""; 1688 1689 if (WIFSIGNALED(status)) 1690 *errnum = "\"%s\" exited on a signal"; 1691 else if (WEXITSTATUS(status) != 0) 1692 *errnum = "\"%s\" returned non-zero status"; 1693 1694 /* 1695 * Null-terminate the result, convert newlines to spaces and 1696 * install it in the variable. 1697 */ 1698 res[cc] = '\0'; 1699 cp = &res[cc]; 1700 1701 if (cc > 0 && *--cp == '\n') { 1702 /* 1703 * A final newline is just stripped 1704 */ 1705 *cp-- = '\0'; 1706 } 1707 while (cp >= res) { 1708 if (*cp == '\n') { 1709 *cp = ' '; 1710 } 1711 cp--; 1712 } 1713 break; 1714 } 1715 return res; 1716 bad: 1717 res = bmake_malloc(1); 1718 *res = '\0'; 1719 return res; 1720 } 1721 1722 /*- 1723 * Error -- 1724 * Print an error message given its format. 1725 * 1726 * Results: 1727 * None. 1728 * 1729 * Side Effects: 1730 * The message is printed. 1731 */ 1732 /* VARARGS */ 1733 void 1734 Error(const char *fmt, ...) 1735 { 1736 va_list ap; 1737 FILE *err_file; 1738 1739 err_file = debug_file; 1740 if (err_file == stdout) 1741 err_file = stderr; 1742 (void)fflush(stdout); 1743 for (;;) { 1744 va_start(ap, fmt); 1745 fprintf(err_file, "%s: ", progname); 1746 (void)vfprintf(err_file, fmt, ap); 1747 va_end(ap); 1748 (void)fprintf(err_file, "\n"); 1749 (void)fflush(err_file); 1750 if (err_file == stderr) 1751 break; 1752 err_file = stderr; 1753 } 1754 } 1755 1756 /*- 1757 * Fatal -- 1758 * Produce a Fatal error message. If jobs are running, waits for them 1759 * to finish. 1760 * 1761 * Results: 1762 * None 1763 * 1764 * Side Effects: 1765 * The program exits 1766 */ 1767 /* VARARGS */ 1768 void 1769 Fatal(const char *fmt, ...) 1770 { 1771 va_list ap; 1772 1773 va_start(ap, fmt); 1774 if (jobsRunning) 1775 Job_Wait(); 1776 1777 (void)fflush(stdout); 1778 (void)vfprintf(stderr, fmt, ap); 1779 va_end(ap); 1780 (void)fprintf(stderr, "\n"); 1781 (void)fflush(stderr); 1782 1783 PrintOnError(NULL, NULL); 1784 1785 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1786 Targ_PrintGraph(2); 1787 Trace_Log(MAKEERROR, 0); 1788 exit(2); /* Not 1 so -q can distinguish error */ 1789 } 1790 1791 /* 1792 * Punt -- 1793 * Major exception once jobs are being created. Kills all jobs, prints 1794 * a message and exits. 1795 * 1796 * Results: 1797 * None 1798 * 1799 * Side Effects: 1800 * All children are killed indiscriminately and the program Lib_Exits 1801 */ 1802 /* VARARGS */ 1803 void 1804 Punt(const char *fmt, ...) 1805 { 1806 va_list ap; 1807 1808 va_start(ap, fmt); 1809 (void)fflush(stdout); 1810 (void)fprintf(stderr, "%s: ", progname); 1811 (void)vfprintf(stderr, fmt, ap); 1812 va_end(ap); 1813 (void)fprintf(stderr, "\n"); 1814 (void)fflush(stderr); 1815 1816 PrintOnError(NULL, NULL); 1817 1818 DieHorribly(); 1819 } 1820 1821 /*- 1822 * DieHorribly -- 1823 * Exit without giving a message. 1824 * 1825 * Results: 1826 * None 1827 * 1828 * Side Effects: 1829 * A big one... 1830 */ 1831 void 1832 DieHorribly(void) 1833 { 1834 if (jobsRunning) 1835 Job_AbortAll(); 1836 if (DEBUG(GRAPH2)) 1837 Targ_PrintGraph(2); 1838 Trace_Log(MAKEERROR, 0); 1839 exit(2); /* Not 1, so -q can distinguish error */ 1840 } 1841 1842 /* 1843 * Finish -- 1844 * Called when aborting due to errors in child shell to signal 1845 * abnormal exit. 1846 * 1847 * Results: 1848 * None 1849 * 1850 * Side Effects: 1851 * The program exits 1852 */ 1853 void 1854 Finish(int errors) 1855 /* number of errors encountered in Make_Make */ 1856 { 1857 if (dieQuietly(NULL, -1)) 1858 exit(2); 1859 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1860 } 1861 1862 /* 1863 * eunlink -- 1864 * Remove a file carefully, avoiding directories. 1865 */ 1866 int 1867 eunlink(const char *file) 1868 { 1869 struct stat st; 1870 1871 if (lstat(file, &st) == -1) 1872 return -1; 1873 1874 if (S_ISDIR(st.st_mode)) { 1875 errno = EISDIR; 1876 return -1; 1877 } 1878 return unlink(file); 1879 } 1880 1881 /* 1882 * execError -- 1883 * Print why exec failed, avoiding stdio. 1884 */ 1885 void 1886 execError(const char *af, const char *av) 1887 { 1888 #ifdef USE_IOVEC 1889 int i = 0; 1890 struct iovec iov[8]; 1891 #define IOADD(s) \ 1892 (void)(iov[i].iov_base = UNCONST(s), \ 1893 iov[i].iov_len = strlen(iov[i].iov_base), \ 1894 i++) 1895 #else 1896 #define IOADD(void)write(2, s, strlen(s)) 1897 #endif 1898 1899 IOADD(progname); 1900 IOADD(": "); 1901 IOADD(af); 1902 IOADD("("); 1903 IOADD(av); 1904 IOADD(") failed ("); 1905 IOADD(strerror(errno)); 1906 IOADD(")\n"); 1907 1908 #ifdef USE_IOVEC 1909 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1910 continue; 1911 #endif 1912 } 1913 1914 /* 1915 * usage -- 1916 * exit with usage message 1917 */ 1918 static void 1919 usage(void) 1920 { 1921 char *p; 1922 if ((p = strchr(progname, '[')) != NULL) 1923 *p = '\0'; 1924 1925 (void)fprintf(stderr, 1926 "usage: %s [-BeikNnqrstWwX] \n\ 1927 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1928 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1929 [-V variable] [-v variable] [variable=value] [target ...]\n", 1930 progname); 1931 exit(2); 1932 } 1933 1934 /* 1935 * realpath(3) can get expensive, cache results... 1936 */ 1937 static GNode *cached_realpaths = NULL; 1938 1939 static GNode * 1940 get_cached_realpaths(void) 1941 { 1942 1943 if (!cached_realpaths) { 1944 cached_realpaths = Targ_NewGN("Realpath"); 1945 #ifndef DEBUG_REALPATH_CACHE 1946 cached_realpaths->flags = INTERNAL; 1947 #endif 1948 } 1949 1950 return cached_realpaths; 1951 } 1952 1953 /* purge any relative paths */ 1954 static void 1955 purge_cached_realpaths(void) 1956 { 1957 GNode *cache = get_cached_realpaths(); 1958 Hash_Entry *he, *nhe; 1959 Hash_Search hs; 1960 1961 he = Hash_EnumFirst(&cache->context, &hs); 1962 while (he) { 1963 nhe = Hash_EnumNext(&hs); 1964 if (he->name[0] != '/') { 1965 if (DEBUG(DIR)) 1966 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1967 Hash_DeleteEntry(&cache->context, he); 1968 } 1969 he = nhe; 1970 } 1971 } 1972 1973 char * 1974 cached_realpath(const char *pathname, char *resolved) 1975 { 1976 GNode *cache; 1977 char *rp, *cp; 1978 1979 if (!pathname || !pathname[0]) 1980 return NULL; 1981 1982 cache = get_cached_realpaths(); 1983 1984 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1985 /* a hit */ 1986 strncpy(resolved, rp, MAXPATHLEN); 1987 resolved[MAXPATHLEN - 1] = '\0'; 1988 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1989 Var_Set(pathname, rp, cache); 1990 } /* else should we negative-cache? */ 1991 1992 free(cp); 1993 return rp ? resolved : NULL; 1994 } 1995 1996 int 1997 PrintAddr(void *a, void *b) 1998 { 1999 printf("%lx ", (unsigned long) a); 2000 return b ? 0 : 0; 2001 } 2002 2003 2004 static int 2005 addErrorCMD(void *cmdp, void *gnp) 2006 { 2007 if (cmdp == NULL) 2008 return 1; /* stop */ 2009 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2010 return 0; 2011 } 2012 2013 /* 2014 * Return true if we should die without noise. 2015 * For example our failing child was a sub-make 2016 * or failure happend elsewhere. 2017 */ 2018 int 2019 dieQuietly(GNode *gn, int bf) 2020 { 2021 static int quietly = -1; 2022 2023 if (quietly < 0) { 2024 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2025 quietly = 0; 2026 else if (bf >= 0) 2027 quietly = bf; 2028 else 2029 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2030 } 2031 return quietly; 2032 } 2033 2034 void 2035 PrintOnError(GNode *gn, const char *s) 2036 { 2037 static GNode *en = NULL; 2038 2039 if (DEBUG(HASH)) { 2040 Targ_Stats(); 2041 Var_Stats(); 2042 } 2043 2044 /* we generally want to keep quiet if a sub-make died */ 2045 if (dieQuietly(gn, -1)) 2046 return; 2047 2048 if (s) 2049 printf("%s", s); 2050 2051 printf("\n%s: stopped in %s\n", progname, curdir); 2052 2053 if (en) 2054 return; /* we've been here! */ 2055 if (gn) { 2056 /* 2057 * We can print this even if there is no .ERROR target. 2058 */ 2059 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2060 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2061 Lst_ForEach(gn->commands, addErrorCMD, gn); 2062 } 2063 const char *expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2064 char *cp = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2065 if (cp) { 2066 if (*cp) 2067 printf("%s", cp); 2068 free(cp); 2069 } 2070 fflush(stdout); 2071 2072 /* 2073 * Finally, see if there is a .ERROR target, and run it if so. 2074 */ 2075 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2076 if (en) { 2077 en->type |= OP_SPECIAL; 2078 Compat_Make(en, en); 2079 } 2080 } 2081 2082 void 2083 Main_ExportMAKEFLAGS(Boolean first) 2084 { 2085 static int once = 1; 2086 2087 if (once != first) 2088 return; 2089 once = 0; 2090 2091 const char *expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2092 char *s = Var_Subst(expr, VAR_CMD, VARE_WANTRES); 2093 if (s != NULL && 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 $TMPDIR but only if it is valid. 2112 * Ensure it ends with /. 2113 */ 2114 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2115 VARE_WANTRES); 2116 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2117 free(tmpdir); 2118 tmpdir = bmake_strdup(_PATH_TMP); 2119 } 2120 } 2121 return tmpdir; 2122 } 2123 2124 /* 2125 * Create and open a temp file using "pattern". 2126 * If "fnamep" is provided set it to a copy of the filename created. 2127 * Otherwise unlink the file once open. 2128 */ 2129 int 2130 mkTempFile(const char *pattern, char **fnamep) 2131 { 2132 static char *tmpdir = NULL; 2133 char tfile[MAXPATHLEN]; 2134 int fd; 2135 2136 if (!pattern) 2137 pattern = TMPPAT; 2138 if (!tmpdir) 2139 tmpdir = getTmpdir(); 2140 if (pattern[0] == '/') { 2141 snprintf(tfile, sizeof(tfile), "%s", pattern); 2142 } else { 2143 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2144 } 2145 if ((fd = mkstemp(tfile)) < 0) 2146 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2147 if (fnamep) { 2148 *fnamep = bmake_strdup(tfile); 2149 } else { 2150 unlink(tfile); /* we just want the descriptor */ 2151 } 2152 return fd; 2153 } 2154 2155 /* 2156 * Convert a string representation of a boolean. 2157 * Anything that looks like "No", "False", "Off", "0" etc, 2158 * is FALSE, otherwise TRUE. 2159 */ 2160 Boolean 2161 s2Boolean(const char *s, Boolean bf) 2162 { 2163 if (s) { 2164 switch(*s) { 2165 case '\0': /* not set - the default wins */ 2166 break; 2167 case '0': 2168 case 'F': 2169 case 'f': 2170 case 'N': 2171 case 'n': 2172 bf = FALSE; 2173 break; 2174 case 'O': 2175 case 'o': 2176 switch (s[1]) { 2177 case 'F': 2178 case 'f': 2179 bf = FALSE; 2180 break; 2181 default: 2182 bf = TRUE; 2183 break; 2184 } 2185 break; 2186 default: 2187 bf = TRUE; 2188 break; 2189 } 2190 } 2191 return bf; 2192 } 2193 2194 /* 2195 * Return a Boolean based on setting of a knob. 2196 * 2197 * If the knob is not set, the supplied default is the return value. 2198 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2199 * is FALSE, otherwise TRUE. 2200 */ 2201 Boolean 2202 getBoolean(const char *name, Boolean bf) 2203 { 2204 char tmp[64]; 2205 char *cp; 2206 2207 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2208 cp = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 2209 2210 if (cp) { 2211 bf = s2Boolean(cp, bf); 2212 free(cp); 2213 } 2214 } 2215 return bf; 2216 } 2217
Indexes created Tue Sep 23 02:09:52 GMT 2025