main.c revision 1.297
1 /* $NetBSD: main.c,v 1.297 2020/08/08 18:54:04 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 1.297 2020/08/08 18:54:04 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 1.297 2020/08/08 18:54:04 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 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 699 char *buf; 700 701 if (line == NULL) 702 return; 703 for (; *line == ' '; ++line) 704 continue; 705 if (!*line) 706 return; 707 708 buf = str_concat(argv0, line, STR_ADDSPACE); 709 free(p1); 710 711 argv = brk_string(buf, &argc, TRUE, &args); 712 if (argv == NULL) { 713 Error("Unterminated quoted string [%s]", buf); 714 free(buf); 715 return; 716 } 717 free(buf); 718 MainParseArgs(argc, argv); 719 720 free(args); 721 free(argv); 722 } 723 724 Boolean 725 Main_SetObjdir(const char *fmt, ...) 726 { 727 struct stat sb; 728 char *path; 729 char buf[MAXPATHLEN + 1]; 730 char buf2[MAXPATHLEN + 1]; 731 Boolean rc = FALSE; 732 va_list ap; 733 734 va_start(ap, fmt); 735 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 736 va_end(ap); 737 738 if (path[0] != '/') { 739 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 740 path = buf2; 741 } 742 743 /* look for the directory and try to chdir there */ 744 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 745 if (chdir(path)) { 746 (void)fprintf(stderr, "make warning: %s: %s.\n", 747 path, strerror(errno)); 748 } else { 749 snprintf(objdir, sizeof objdir, "%s", path); 750 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 751 setenv("PWD", objdir, 1); 752 Dir_InitDot(); 753 purge_cached_realpaths(); 754 rc = TRUE; 755 if (enterFlag && strcmp(objdir, curdir) != 0) 756 enterFlagObj = TRUE; 757 } 758 } 759 760 return rc; 761 } 762 763 static Boolean 764 Main_SetVarObjdir(const char *var, const char *suffix) 765 { 766 char *path_freeIt; 767 const char *path = Var_Value(var, VAR_CMD, &path_freeIt); 768 const char *xpath; 769 char *xpath_freeIt; 770 771 if (path == NULL || path[0] == '\0') { 772 bmake_free(path_freeIt); 773 return FALSE; 774 } 775 776 /* expand variable substitutions */ 777 xpath = path; 778 xpath_freeIt = NULL; 779 if (strchr(path, '$') != 0) 780 xpath = xpath_freeIt = Var_Subst(path, VAR_GLOBAL, 781 VARE_WANTRES); 782 783 (void)Main_SetObjdir("%s%s", xpath, suffix); 784 785 bmake_free(xpath_freeIt); 786 bmake_free(path_freeIt); 787 return TRUE; 788 } 789 790 /*- 791 * ReadAllMakefiles -- 792 * wrapper around ReadMakefile() to read all. 793 * 794 * Results: 795 * TRUE if ok, FALSE on error 796 */ 797 static int 798 ReadAllMakefiles(const void *p, const void *q) 799 { 800 return ReadMakefile(p, q) == 0; 801 } 802 803 int 804 str2Lst_Append(Lst lp, char *str, const char *sep) 805 { 806 char *cp; 807 int n; 808 809 if (!sep) 810 sep = " \t"; 811 812 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 813 (void)Lst_AtEnd(lp, cp); 814 n++; 815 } 816 return n; 817 } 818 819 #ifdef SIGINFO 820 /*ARGSUSED*/ 821 static void 822 siginfo(int signo MAKE_ATTR_UNUSED) 823 { 824 char dir[MAXPATHLEN]; 825 char str[2 * MAXPATHLEN]; 826 int len; 827 if (getcwd(dir, sizeof(dir)) == NULL) 828 return; 829 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 830 if (len > 0) 831 (void)write(STDERR_FILENO, str, (size_t)len); 832 } 833 #endif 834 835 /* 836 * Allow makefiles some control over the mode we run in. 837 */ 838 void 839 MakeMode(const char *mode) 840 { 841 char *mp = NULL; 842 843 if (!mode) 844 mode = mp = Var_Subst("${" MAKE_MODE ":tl}", 845 VAR_GLOBAL, VARE_WANTRES); 846 847 if (mode && *mode) { 848 if (strstr(mode, "compat")) { 849 compatMake = TRUE; 850 forceJobs = FALSE; 851 } 852 #if USE_META 853 if (strstr(mode, "meta")) 854 meta_mode_init(mode); 855 #endif 856 } 857 858 free(mp); 859 } 860 861 static void 862 doPrintVars(void) 863 { 864 LstNode ln; 865 Boolean expandVars; 866 867 if (printVars == EXPAND_VARS) 868 expandVars = TRUE; 869 else if (debugVflag) 870 expandVars = FALSE; 871 else 872 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 873 874 for (ln = Lst_First(variables); ln != NULL; 875 ln = Lst_Succ(ln)) { 876 char *var = (char *)Lst_Datum(ln); 877 const char *value; 878 char *p1; 879 880 if (strchr(var, '$')) { 881 value = p1 = Var_Subst(var, VAR_GLOBAL, VARE_WANTRES); 882 } else if (expandVars) { 883 char tmp[128]; 884 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 885 886 if (len >= (int)sizeof(tmp)) 887 Fatal("%s: variable name too big: %s", 888 progname, var); 889 value = p1 = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 890 } else { 891 value = Var_Value(var, VAR_GLOBAL, &p1); 892 } 893 printf("%s\n", value ? value : ""); 894 bmake_free(p1); 895 } 896 } 897 898 static Boolean 899 runTargets(void) 900 { 901 Lst targs; /* target nodes to create -- passed to Make_Init */ 902 Boolean outOfDate; /* FALSE if all targets up to date */ 903 904 /* 905 * Have now read the entire graph and need to make a list of 906 * targets to create. If none was given on the command line, 907 * we consult the parsing module to find the main target(s) 908 * to create. 909 */ 910 if (Lst_IsEmpty(create)) 911 targs = Parse_MainName(); 912 else 913 targs = Targ_FindList(create, TARG_CREATE); 914 915 if (!compatMake) { 916 /* 917 * Initialize job module before traversing the graph 918 * now that any .BEGIN and .END targets have been read. 919 * This is done only if the -q flag wasn't given 920 * (to prevent the .BEGIN from being executed should 921 * it exist). 922 */ 923 if (!queryFlag) { 924 Job_Init(); 925 jobsRunning = TRUE; 926 } 927 928 /* Traverse the graph, checking on all the targets */ 929 outOfDate = Make_Run(targs); 930 } else { 931 /* 932 * Compat_Init will take care of creating all the 933 * targets as well as initializing the module. 934 */ 935 Compat_Run(targs); 936 outOfDate = FALSE; 937 } 938 Lst_Destroy(targs, NULL); 939 return outOfDate; 940 } 941 942 /*- 943 * main -- 944 * The main function, for obvious reasons. Initializes variables 945 * and a few modules, then parses the arguments give it in the 946 * environment and on the command line. Reads the system makefile 947 * followed by either Makefile, makefile or the file given by the 948 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 949 * flags it has received by then uses either the Make or the Compat 950 * module to create the initial list of targets. 951 * 952 * Results: 953 * If -q was given, exits -1 if anything was out-of-date. Else it exits 954 * 0. 955 * 956 * Side Effects: 957 * The program exits when done. Targets are created. etc. etc. etc. 958 */ 959 int 960 main(int argc, char **argv) 961 { 962 Boolean outOfDate; /* FALSE if all targets up to date */ 963 struct stat sb, sa; 964 char *p1, *path; 965 char mdpath[MAXPATHLEN]; 966 const char *machine = getenv("MACHINE"); 967 const char *machine_arch = getenv("MACHINE_ARCH"); 968 char *syspath = getenv("MAKESYSPATH"); 969 Lst sysMkPath; /* Path of sys.mk */ 970 char *cp = NULL, *start; 971 /* avoid faults on read-only strings */ 972 static char defsyspath[] = _PATH_DEFSYSPATH; 973 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 974 struct timeval rightnow; /* to initialize random seed */ 975 struct utsname utsname; 976 977 /* default to writing debug to stderr */ 978 debug_file = stderr; 979 980 #ifdef SIGINFO 981 (void)bmake_signal(SIGINFO, siginfo); 982 #endif 983 /* 984 * Set the seed to produce a different random sequence 985 * on each program execution. 986 */ 987 gettimeofday(&rightnow, NULL); 988 srandom(rightnow.tv_sec + rightnow.tv_usec); 989 990 if ((progname = strrchr(argv[0], '/')) != NULL) 991 progname++; 992 else 993 progname = argv[0]; 994 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 995 /* 996 * get rid of resource limit on file descriptors 997 */ 998 { 999 struct rlimit rl; 1000 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1001 rl.rlim_cur != rl.rlim_max) { 1002 rl.rlim_cur = rl.rlim_max; 1003 (void)setrlimit(RLIMIT_NOFILE, &rl); 1004 } 1005 } 1006 #endif 1007 1008 if (uname(&utsname) == -1) { 1009 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1010 strerror(errno)); 1011 exit(2); 1012 } 1013 1014 /* 1015 * Get the name of this type of MACHINE from utsname 1016 * so we can share an executable for similar machines. 1017 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1018 * 1019 * Note that both MACHINE and MACHINE_ARCH are decided at 1020 * run-time. 1021 */ 1022 if (!machine) { 1023 #ifdef MAKE_NATIVE 1024 machine = utsname.machine; 1025 #else 1026 #ifdef MAKE_MACHINE 1027 machine = MAKE_MACHINE; 1028 #else 1029 machine = "unknown"; 1030 #endif 1031 #endif 1032 } 1033 1034 if (!machine_arch) { 1035 #ifdef MAKE_NATIVE 1036 static char machine_arch_buf[sizeof(utsname.machine)]; 1037 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1038 size_t len = sizeof(machine_arch_buf); 1039 1040 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1041 &len, NULL, 0) < 0) { 1042 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1043 strerror(errno)); 1044 exit(2); 1045 } 1046 1047 machine_arch = machine_arch_buf; 1048 #else 1049 #ifndef MACHINE_ARCH 1050 #ifdef MAKE_MACHINE_ARCH 1051 machine_arch = MAKE_MACHINE_ARCH; 1052 #else 1053 machine_arch = "unknown"; 1054 #endif 1055 #else 1056 machine_arch = MACHINE_ARCH; 1057 #endif 1058 #endif 1059 } 1060 1061 myPid = getpid(); /* remember this for vFork() */ 1062 1063 /* 1064 * Just in case MAKEOBJDIR wants us to do something tricky. 1065 */ 1066 Var_Init(); /* Initialize the lists of variables for 1067 * parsing arguments */ 1068 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1069 Var_Set("MACHINE", machine, VAR_GLOBAL); 1070 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1071 #ifdef MAKE_VERSION 1072 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1073 #endif 1074 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1075 /* 1076 * This is the traditional preference for makefiles. 1077 */ 1078 #ifndef MAKEFILE_PREFERENCE_LIST 1079 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1080 #endif 1081 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1082 VAR_GLOBAL); 1083 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1084 1085 create = Lst_Init(FALSE); 1086 makefiles = Lst_Init(FALSE); 1087 printVars = 0; 1088 debugVflag = FALSE; 1089 variables = Lst_Init(FALSE); 1090 beSilent = FALSE; /* Print commands as executed */ 1091 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1092 noExecute = FALSE; /* Execute all commands */ 1093 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1094 keepgoing = FALSE; /* Stop on error */ 1095 allPrecious = FALSE; /* Remove targets when interrupted */ 1096 deleteOnError = FALSE; /* Historical default behavior */ 1097 queryFlag = FALSE; /* This is not just a check-run */ 1098 noBuiltins = FALSE; /* Read the built-in rules */ 1099 touchFlag = FALSE; /* Actually update targets */ 1100 debug = 0; /* No debug verbosity, please. */ 1101 jobsRunning = FALSE; 1102 1103 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1104 maxJobTokens = maxJobs; 1105 compatMake = FALSE; /* No compat mode */ 1106 ignorePWD = FALSE; 1107 1108 /* 1109 * Initialize the parsing, directory and variable modules to prepare 1110 * for the reading of inclusion paths and variable settings on the 1111 * command line 1112 */ 1113 1114 /* 1115 * Initialize various variables. 1116 * MAKE also gets this name, for compatibility 1117 * .MAKEFLAGS gets set to the empty string just in case. 1118 * MFLAGS also gets initialized empty, for compatibility. 1119 */ 1120 Parse_Init(); 1121 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1122 /* 1123 * Leave alone if it is an absolute path, or if it does 1124 * not contain a '/' in which case we need to find it in 1125 * the path, like execvp(3) and the shells do. 1126 */ 1127 p1 = argv[0]; 1128 } else { 1129 /* 1130 * A relative path, canonicalize it. 1131 */ 1132 p1 = cached_realpath(argv[0], mdpath); 1133 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1134 p1 = argv[0]; /* realpath failed */ 1135 } 1136 } 1137 Var_Set("MAKE", p1, VAR_GLOBAL); 1138 Var_Set(".MAKE", p1, VAR_GLOBAL); 1139 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1140 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1141 Var_Set("MFLAGS", "", VAR_GLOBAL); 1142 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1143 /* some makefiles need to know this */ 1144 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1145 1146 /* 1147 * Set some other useful macros 1148 */ 1149 { 1150 char tmp[64], *ep; 1151 1152 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1153 if (makelevel < 0) 1154 makelevel = 0; 1155 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1156 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1157 snprintf(tmp, sizeof(tmp), "%u", myPid); 1158 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1159 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1160 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1161 } 1162 if (makelevel > 0) { 1163 char pn[1024]; 1164 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1165 progname = bmake_strdup(pn); 1166 } 1167 1168 #ifdef USE_META 1169 meta_init(); 1170 #endif 1171 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1172 1173 /* 1174 * First snag any flags out of the MAKE environment variable. 1175 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1176 * in a different format). 1177 */ 1178 #ifdef POSIX 1179 p1 = explode(getenv("MAKEFLAGS")); 1180 Main_ParseArgLine(p1); 1181 free(p1); 1182 #else 1183 Main_ParseArgLine(getenv("MAKE")); 1184 #endif 1185 1186 /* 1187 * Find where we are (now). 1188 * We take care of PWD for the automounter below... 1189 */ 1190 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1191 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1192 progname, strerror(errno)); 1193 exit(2); 1194 } 1195 1196 MainParseArgs(argc, argv); 1197 1198 if (enterFlag) 1199 printf("%s: Entering directory `%s'\n", progname, curdir); 1200 1201 /* 1202 * Verify that cwd is sane. 1203 */ 1204 if (stat(curdir, &sa) == -1) { 1205 (void)fprintf(stderr, "%s: %s: %s.\n", 1206 progname, curdir, strerror(errno)); 1207 exit(2); 1208 } 1209 1210 /* 1211 * All this code is so that we know where we are when we start up 1212 * on a different machine with pmake. 1213 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1214 * since the value of curdir can vary depending on how we got 1215 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1216 * or via subdir.mk in which case its likely a shell which does 1217 * not provide it. 1218 * So, to stop it breaking this case only, we ignore PWD if 1219 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1220 */ 1221 #ifndef NO_PWD_OVERRIDE 1222 if (!ignorePWD) { 1223 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1224 1225 if ((pwd = getenv("PWD")) != NULL && 1226 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1227 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1228 VAR_CMD, &ptmp2); 1229 1230 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1231 if (stat(pwd, &sb) == 0 && 1232 sa.st_ino == sb.st_ino && 1233 sa.st_dev == sb.st_dev) 1234 (void)strncpy(curdir, pwd, MAXPATHLEN); 1235 } 1236 } 1237 bmake_free(ptmp1); 1238 bmake_free(ptmp2); 1239 } 1240 #endif 1241 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1242 1243 /* 1244 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1245 * MAKEOBJDIR is set in the environment, try only that value 1246 * and fall back to .CURDIR if it does not exist. 1247 * 1248 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1249 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1250 * of these paths exist, just use .CURDIR. 1251 */ 1252 Dir_Init(curdir); 1253 (void)Main_SetObjdir("%s", curdir); 1254 1255 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1256 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1257 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1258 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1259 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1260 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1261 1262 /* 1263 * Initialize archive, target and suffix modules in preparation for 1264 * parsing the makefile(s) 1265 */ 1266 Arch_Init(); 1267 Targ_Init(); 1268 Suff_Init(); 1269 Trace_Init(tracefile); 1270 1271 DEFAULT = NULL; 1272 (void)time(&now); 1273 1274 Trace_Log(MAKESTART, NULL); 1275 1276 /* 1277 * Set up the .TARGETS variable to contain the list of targets to be 1278 * created. If none specified, make the variable empty -- the parser 1279 * will fill the thing in with the default or .MAIN target. 1280 */ 1281 if (!Lst_IsEmpty(create)) { 1282 LstNode ln; 1283 1284 for (ln = Lst_First(create); ln != NULL; 1285 ln = Lst_Succ(ln)) { 1286 char *name = (char *)Lst_Datum(ln); 1287 1288 Var_Append(".TARGETS", name, VAR_GLOBAL); 1289 } 1290 } else 1291 Var_Set(".TARGETS", "", VAR_GLOBAL); 1292 1293 1294 /* 1295 * If no user-supplied system path was given (through the -m option) 1296 * add the directories from the DEFSYSPATH (more than one may be given 1297 * as dir1:...:dirn) to the system include path. 1298 */ 1299 if (syspath == NULL || *syspath == '\0') 1300 syspath = defsyspath; 1301 else 1302 syspath = bmake_strdup(syspath); 1303 1304 for (start = syspath; *start != '\0'; start = cp) { 1305 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1306 continue; 1307 if (*cp == ':') { 1308 *cp++ = '\0'; 1309 } 1310 /* look for magic parent directory search string */ 1311 if (strncmp(".../", start, 4) != 0) { 1312 (void)Dir_AddDir(defIncPath, start); 1313 } else { 1314 if (Dir_FindHereOrAbove(curdir, start+4, 1315 found_path, sizeof(found_path))) { 1316 (void)Dir_AddDir(defIncPath, found_path); 1317 } 1318 } 1319 } 1320 if (syspath != defsyspath) 1321 free(syspath); 1322 1323 /* 1324 * Read in the built-in rules first, followed by the specified 1325 * makefile, if it was (makefile != NULL), or the default 1326 * makefile and Makefile, in that order, if it wasn't. 1327 */ 1328 if (!noBuiltins) { 1329 LstNode ln; 1330 1331 sysMkPath = Lst_Init(FALSE); 1332 Dir_Expand(_PATH_DEFSYSMK, 1333 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1334 sysMkPath); 1335 if (Lst_IsEmpty(sysMkPath)) 1336 Fatal("%s: no system rules (%s).", progname, 1337 _PATH_DEFSYSMK); 1338 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1339 if (ln == NULL) 1340 Fatal("%s: cannot open %s.", progname, 1341 (char *)Lst_Datum(ln)); 1342 } 1343 1344 if (!Lst_IsEmpty(makefiles)) { 1345 LstNode ln; 1346 1347 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1348 if (ln != NULL) 1349 Fatal("%s: cannot open %s.", progname, 1350 (char *)Lst_Datum(ln)); 1351 } else { 1352 p1 = Var_Subst("${" MAKEFILE_PREFERENCE "}", 1353 VAR_CMD, VARE_WANTRES); 1354 if (p1) { 1355 (void)str2Lst_Append(makefiles, p1, NULL); 1356 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1357 free(p1); 1358 } 1359 } 1360 1361 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1362 if (!noBuiltins || !printVars) { 1363 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE:T}", 1364 VAR_CMD, VARE_WANTRES); 1365 doing_depend = TRUE; 1366 (void)ReadMakefile(makeDependfile, NULL); 1367 doing_depend = FALSE; 1368 } 1369 1370 if (enterFlagObj) 1371 printf("%s: Entering directory `%s'\n", progname, objdir); 1372 1373 MakeMode(NULL); 1374 1375 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1376 bmake_free(p1); 1377 1378 if (!forceJobs && !compatMake && 1379 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1380 char *value; 1381 int n; 1382 1383 value = Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES); 1384 n = strtol(value, NULL, 0); 1385 if (n < 1) { 1386 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1387 progname); 1388 exit(1); 1389 } 1390 if (n != maxJobs) { 1391 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1392 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1393 } 1394 maxJobs = n; 1395 maxJobTokens = maxJobs; 1396 forceJobs = TRUE; 1397 free(value); 1398 } 1399 1400 /* 1401 * Be compatible if user did not specify -j and did not explicitly 1402 * turned compatibility on 1403 */ 1404 if (!compatMake && !forceJobs) { 1405 compatMake = TRUE; 1406 } 1407 1408 if (!compatMake) 1409 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1410 if (DEBUG(JOB)) 1411 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1412 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1413 1414 if (!printVars) 1415 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1416 1417 1418 /* 1419 * For compatibility, look at the directories in the VPATH variable 1420 * and add them to the search path, if the variable is defined. The 1421 * variable's value is in the same format as the PATH envariable, i.e. 1422 * <directory>:<directory>:<directory>... 1423 */ 1424 if (Var_Exists("VPATH", VAR_CMD)) { 1425 char *vpath, savec; 1426 /* 1427 * GCC stores string constants in read-only memory, but 1428 * Var_Subst will want to write this thing, so store it 1429 * in an array 1430 */ 1431 static char VPATH[] = "${VPATH}"; 1432 1433 vpath = Var_Subst(VPATH, VAR_CMD, VARE_WANTRES); 1434 path = vpath; 1435 do { 1436 /* skip to end of directory */ 1437 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1438 continue; 1439 /* Save terminator character so know when to stop */ 1440 savec = *cp; 1441 *cp = '\0'; 1442 /* Add directory to search path */ 1443 (void)Dir_AddDir(dirSearchPath, path); 1444 *cp = savec; 1445 path = cp + 1; 1446 } while (savec == ':'); 1447 free(vpath); 1448 } 1449 1450 /* 1451 * Now that all search paths have been read for suffixes et al, it's 1452 * time to add the default search path to their lists... 1453 */ 1454 Suff_DoPaths(); 1455 1456 /* 1457 * Propagate attributes through :: dependency lists. 1458 */ 1459 Targ_Propagate(); 1460 1461 /* print the initial graph, if the user requested it */ 1462 if (DEBUG(GRAPH1)) 1463 Targ_PrintGraph(1); 1464 1465 /* print the values of any variables requested by the user */ 1466 if (printVars) { 1467 doPrintVars(); 1468 outOfDate = FALSE; 1469 } else { 1470 outOfDate = runTargets(); 1471 } 1472 1473 #ifdef CLEANUP 1474 Lst_Destroy(variables, NULL); 1475 Lst_Destroy(makefiles, NULL); 1476 Lst_Destroy(create, (FreeProc *)free); 1477 #endif 1478 1479 /* print the graph now it's been processed if the user requested it */ 1480 if (DEBUG(GRAPH2)) 1481 Targ_PrintGraph(2); 1482 1483 Trace_Log(MAKEEND, 0); 1484 1485 if (enterFlagObj) 1486 printf("%s: Leaving directory `%s'\n", progname, objdir); 1487 if (enterFlag) 1488 printf("%s: Leaving directory `%s'\n", progname, curdir); 1489 1490 #ifdef USE_META 1491 meta_finish(); 1492 #endif 1493 Suff_End(); 1494 Targ_End(); 1495 Arch_End(); 1496 Var_End(); 1497 Parse_End(); 1498 Dir_End(); 1499 Job_End(); 1500 Trace_End(); 1501 1502 return outOfDate ? 1 : 0; 1503 } 1504 1505 /*- 1506 * ReadMakefile -- 1507 * Open and parse the given makefile. 1508 * 1509 * Results: 1510 * 0 if ok. -1 if couldn't open file. 1511 * 1512 * Side Effects: 1513 * lots 1514 */ 1515 static int 1516 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1517 { 1518 const char *fname = p; /* makefile to read */ 1519 int fd; 1520 size_t len = MAXPATHLEN; 1521 char *name, *path = bmake_malloc(len); 1522 1523 if (!strcmp(fname, "-")) { 1524 Parse_File(NULL /*stdin*/, -1); 1525 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1526 } else { 1527 /* if we've chdir'd, rebuild the path name */ 1528 if (strcmp(curdir, objdir) && *fname != '/') { 1529 size_t plen = strlen(curdir) + strlen(fname) + 2; 1530 if (len < plen) 1531 path = bmake_realloc(path, len = 2 * plen); 1532 1533 (void)snprintf(path, len, "%s/%s", curdir, fname); 1534 fd = open(path, O_RDONLY); 1535 if (fd != -1) { 1536 fname = path; 1537 goto found; 1538 } 1539 1540 /* If curdir failed, try objdir (ala .depend) */ 1541 plen = strlen(objdir) + strlen(fname) + 2; 1542 if (len < plen) 1543 path = bmake_realloc(path, len = 2 * plen); 1544 (void)snprintf(path, len, "%s/%s", objdir, fname); 1545 fd = open(path, O_RDONLY); 1546 if (fd != -1) { 1547 fname = path; 1548 goto found; 1549 } 1550 } else { 1551 fd = open(fname, O_RDONLY); 1552 if (fd != -1) 1553 goto found; 1554 } 1555 /* look in -I and system include directories. */ 1556 name = Dir_FindFile(fname, parseIncPath); 1557 if (!name) 1558 name = Dir_FindFile(fname, 1559 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1560 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1561 free(name); 1562 free(path); 1563 return -1; 1564 } 1565 fname = name; 1566 /* 1567 * set the MAKEFILE variable desired by System V fans -- the 1568 * placement of the setting here means it gets set to the last 1569 * makefile specified, as it is set by SysV make. 1570 */ 1571 found: 1572 if (!doing_depend) 1573 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1574 Parse_File(fname, fd); 1575 } 1576 free(path); 1577 return 0; 1578 } 1579 1580 1581 1582 /*- 1583 * Cmd_Exec -- 1584 * Execute the command in cmd, and return the output of that command 1585 * in a string. 1586 * 1587 * Results: 1588 * A string containing the output of the command, or the empty string. 1589 * *errfmt returns a format string describing the command failure, 1590 * if any, using a single %s conversion specification. 1591 * 1592 * Side Effects: 1593 * The string must be freed by the caller. 1594 */ 1595 char * 1596 Cmd_Exec(const char *cmd, const char **errfmt) 1597 { 1598 const char *args[4]; /* Args for invoking the shell */ 1599 int fds[2]; /* Pipe streams */ 1600 int cpid; /* Child PID */ 1601 int pid; /* PID from wait() */ 1602 char *res; /* result */ 1603 int status; /* command exit status */ 1604 Buffer buf; /* buffer to store the result */ 1605 char *cp; 1606 int savederr; /* saved errno */ 1607 ssize_t cc; /* bytes read, or -1 */ 1608 1609 *errfmt = NULL; 1610 1611 if (!shellName) 1612 Shell_Init(); 1613 /* 1614 * Set up arguments for shell 1615 */ 1616 args[0] = shellName; 1617 args[1] = "-c"; 1618 args[2] = cmd; 1619 args[3] = NULL; 1620 1621 /* 1622 * Open a pipe for fetching its output 1623 */ 1624 if (pipe(fds) == -1) { 1625 *errfmt = "Couldn't create pipe for \"%s\""; 1626 goto bad; 1627 } 1628 1629 /* 1630 * Fork 1631 */ 1632 switch (cpid = vFork()) { 1633 case 0: 1634 /* 1635 * Close input side of pipe 1636 */ 1637 (void)close(fds[0]); 1638 1639 /* 1640 * Duplicate the output stream to the shell's output, then 1641 * shut the extra thing down. Note we don't fetch the error 1642 * stream...why not? Why? 1643 */ 1644 (void)dup2(fds[1], 1); 1645 (void)close(fds[1]); 1646 1647 Var_ExportVars(); 1648 1649 (void)execv(shellPath, UNCONST(args)); 1650 _exit(1); 1651 /*NOTREACHED*/ 1652 1653 case -1: 1654 *errfmt = "Couldn't exec \"%s\""; 1655 goto bad; 1656 1657 default: 1658 /* 1659 * No need for the writing half 1660 */ 1661 (void)close(fds[1]); 1662 1663 savederr = 0; 1664 Buf_Init(&buf, 0); 1665 1666 /* XXX: split variable cc into 2 */ 1667 do { 1668 char result[BUFSIZ]; 1669 cc = read(fds[0], result, sizeof(result)); 1670 if (cc > 0) 1671 Buf_AddBytes(&buf, result, (size_t)cc); 1672 } 1673 while (cc > 0 || (cc == -1 && errno == EINTR)); 1674 if (cc == -1) 1675 savederr = errno; 1676 1677 /* 1678 * Close the input side of the pipe. 1679 */ 1680 (void)close(fds[0]); 1681 1682 /* 1683 * Wait for the process to exit. 1684 */ 1685 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1686 JobReapChild(pid, status, FALSE); 1687 continue; 1688 } 1689 cc = (/* XXX */ssize_t)Buf_Size(&buf); 1690 res = Buf_Destroy(&buf, FALSE); 1691 1692 if (savederr != 0) 1693 *errfmt = "Couldn't read shell's output for \"%s\""; 1694 1695 if (WIFSIGNALED(status)) 1696 *errfmt = "\"%s\" exited on a signal"; 1697 else if (WEXITSTATUS(status) != 0) 1698 *errfmt = "\"%s\" returned non-zero status"; 1699 1700 /* 1701 * Null-terminate the result, convert newlines to spaces and 1702 * install it in the variable. 1703 */ 1704 res[cc] = '\0'; 1705 cp = &res[cc]; 1706 1707 if (cc > 0 && *--cp == '\n') { 1708 /* 1709 * A final newline is just stripped 1710 */ 1711 *cp-- = '\0'; 1712 } 1713 while (cp >= res) { 1714 if (*cp == '\n') { 1715 *cp = ' '; 1716 } 1717 cp--; 1718 } 1719 break; 1720 } 1721 return res; 1722 bad: 1723 return bmake_strdup(""); 1724 } 1725 1726 /*- 1727 * Error -- 1728 * Print an error message given its format. 1729 * 1730 * Results: 1731 * None. 1732 * 1733 * Side Effects: 1734 * The message is printed. 1735 */ 1736 /* VARARGS */ 1737 void 1738 Error(const char *fmt, ...) 1739 { 1740 va_list ap; 1741 FILE *err_file; 1742 1743 err_file = debug_file; 1744 if (err_file == stdout) 1745 err_file = stderr; 1746 (void)fflush(stdout); 1747 for (;;) { 1748 va_start(ap, fmt); 1749 fprintf(err_file, "%s: ", progname); 1750 (void)vfprintf(err_file, fmt, ap); 1751 va_end(ap); 1752 (void)fprintf(err_file, "\n"); 1753 (void)fflush(err_file); 1754 if (err_file == stderr) 1755 break; 1756 err_file = stderr; 1757 } 1758 } 1759 1760 /*- 1761 * Fatal -- 1762 * Produce a Fatal error message. If jobs are running, waits for them 1763 * to finish. 1764 * 1765 * Results: 1766 * None 1767 * 1768 * Side Effects: 1769 * The program exits 1770 */ 1771 /* VARARGS */ 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 /* VARARGS */ 1807 void 1808 Punt(const char *fmt, ...) 1809 { 1810 va_list ap; 1811 1812 va_start(ap, fmt); 1813 (void)fflush(stdout); 1814 (void)fprintf(stderr, "%s: ", progname); 1815 (void)vfprintf(stderr, fmt, ap); 1816 va_end(ap); 1817 (void)fprintf(stderr, "\n"); 1818 (void)fflush(stderr); 1819 1820 PrintOnError(NULL, NULL); 1821 1822 DieHorribly(); 1823 } 1824 1825 /*- 1826 * DieHorribly -- 1827 * Exit without giving a message. 1828 * 1829 * Results: 1830 * None 1831 * 1832 * Side Effects: 1833 * A big one... 1834 */ 1835 void 1836 DieHorribly(void) 1837 { 1838 if (jobsRunning) 1839 Job_AbortAll(); 1840 if (DEBUG(GRAPH2)) 1841 Targ_PrintGraph(2); 1842 Trace_Log(MAKEERROR, 0); 1843 exit(2); /* Not 1, so -q can distinguish error */ 1844 } 1845 1846 /* 1847 * Finish -- 1848 * Called when aborting due to errors in child shell to signal 1849 * abnormal exit. 1850 * 1851 * Results: 1852 * None 1853 * 1854 * Side Effects: 1855 * The program exits 1856 */ 1857 void 1858 Finish(int errors) 1859 /* number of errors encountered in Make_Make */ 1860 { 1861 if (dieQuietly(NULL, -1)) 1862 exit(2); 1863 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1864 } 1865 1866 /* 1867 * eunlink -- 1868 * Remove a file carefully, avoiding directories. 1869 */ 1870 int 1871 eunlink(const char *file) 1872 { 1873 struct stat st; 1874 1875 if (lstat(file, &st) == -1) 1876 return -1; 1877 1878 if (S_ISDIR(st.st_mode)) { 1879 errno = EISDIR; 1880 return -1; 1881 } 1882 return unlink(file); 1883 } 1884 1885 /* 1886 * execError -- 1887 * Print why exec failed, avoiding stdio. 1888 */ 1889 void 1890 execError(const char *af, const char *av) 1891 { 1892 #ifdef USE_IOVEC 1893 int i = 0; 1894 struct iovec iov[8]; 1895 #define IOADD(s) \ 1896 (void)(iov[i].iov_base = UNCONST(s), \ 1897 iov[i].iov_len = strlen(iov[i].iov_base), \ 1898 i++) 1899 #else 1900 #define IOADD(void)write(2, s, strlen(s)) 1901 #endif 1902 1903 IOADD(progname); 1904 IOADD(": "); 1905 IOADD(af); 1906 IOADD("("); 1907 IOADD(av); 1908 IOADD(") failed ("); 1909 IOADD(strerror(errno)); 1910 IOADD(")\n"); 1911 1912 #ifdef USE_IOVEC 1913 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1914 continue; 1915 #endif 1916 } 1917 1918 /* 1919 * usage -- 1920 * exit with usage message 1921 */ 1922 static void 1923 usage(void) 1924 { 1925 char *p; 1926 if ((p = strchr(progname, '[')) != NULL) 1927 *p = '\0'; 1928 1929 (void)fprintf(stderr, 1930 "usage: %s [-BeikNnqrstWwX] \n" 1931 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1932 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1933 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1934 progname); 1935 exit(2); 1936 } 1937 1938 /* 1939 * realpath(3) can get expensive, cache results... 1940 */ 1941 static GNode *cached_realpaths = NULL; 1942 1943 static GNode * 1944 get_cached_realpaths(void) 1945 { 1946 1947 if (!cached_realpaths) { 1948 cached_realpaths = Targ_NewGN("Realpath"); 1949 #ifndef DEBUG_REALPATH_CACHE 1950 cached_realpaths->flags = INTERNAL; 1951 #endif 1952 } 1953 1954 return cached_realpaths; 1955 } 1956 1957 /* purge any relative paths */ 1958 static void 1959 purge_cached_realpaths(void) 1960 { 1961 GNode *cache = get_cached_realpaths(); 1962 Hash_Entry *he, *nhe; 1963 Hash_Search hs; 1964 1965 he = Hash_EnumFirst(&cache->context, &hs); 1966 while (he) { 1967 nhe = Hash_EnumNext(&hs); 1968 if (he->name[0] != '/') { 1969 if (DEBUG(DIR)) 1970 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1971 Hash_DeleteEntry(&cache->context, he); 1972 } 1973 he = nhe; 1974 } 1975 } 1976 1977 char * 1978 cached_realpath(const char *pathname, char *resolved) 1979 { 1980 GNode *cache; 1981 const char *rp; 1982 char *cp; 1983 1984 if (!pathname || !pathname[0]) 1985 return NULL; 1986 1987 cache = get_cached_realpaths(); 1988 1989 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1990 /* a hit */ 1991 strncpy(resolved, rp, MAXPATHLEN); 1992 resolved[MAXPATHLEN - 1] = '\0'; 1993 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1994 Var_Set(pathname, rp, cache); 1995 } /* else should we negative-cache? */ 1996 1997 bmake_free(cp); 1998 return rp ? resolved : NULL; 1999 } 2000 2001 int 2002 PrintAddr(void *a, void *b) 2003 { 2004 printf("%lx ", (unsigned long) a); 2005 return b ? 0 : 0; 2006 } 2007 2008 2009 static int 2010 addErrorCMD(void *cmdp, void *gnp) 2011 { 2012 if (cmdp == NULL) 2013 return 1; /* stop */ 2014 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2015 return 0; 2016 } 2017 2018 /* 2019 * Return true if we should die without noise. 2020 * For example our failing child was a sub-make 2021 * or failure happend elsewhere. 2022 */ 2023 int 2024 dieQuietly(GNode *gn, int bf) 2025 { 2026 static int quietly = -1; 2027 2028 if (quietly < 0) { 2029 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2030 quietly = 0; 2031 else if (bf >= 0) 2032 quietly = bf; 2033 else 2034 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2035 } 2036 return quietly; 2037 } 2038 2039 void 2040 PrintOnError(GNode *gn, const char *s) 2041 { 2042 static GNode *en = NULL; 2043 const char *expr; 2044 char *cp; 2045 2046 if (DEBUG(HASH)) { 2047 Targ_Stats(); 2048 Var_Stats(); 2049 } 2050 2051 /* we generally want to keep quiet if a sub-make died */ 2052 if (dieQuietly(gn, -1)) 2053 return; 2054 2055 if (s) 2056 printf("%s", s); 2057 2058 printf("\n%s: stopped in %s\n", progname, curdir); 2059 2060 if (en) 2061 return; /* we've been here! */ 2062 if (gn) { 2063 /* 2064 * We can print this even if there is no .ERROR target. 2065 */ 2066 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2067 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2068 Lst_ForEach(gn->commands, addErrorCMD, gn); 2069 } 2070 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2071 cp = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2072 if (cp) { 2073 if (*cp) 2074 printf("%s", cp); 2075 free(cp); 2076 } 2077 fflush(stdout); 2078 2079 /* 2080 * Finally, see if there is a .ERROR target, and run it if so. 2081 */ 2082 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2083 if (en) { 2084 en->type |= OP_SPECIAL; 2085 Compat_Make(en, en); 2086 } 2087 } 2088 2089 void 2090 Main_ExportMAKEFLAGS(Boolean first) 2091 { 2092 static int once = 1; 2093 const char *expr; 2094 char *s; 2095 2096 if (once != first) 2097 return; 2098 once = 0; 2099 2100 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2101 s = Var_Subst(expr, VAR_CMD, VARE_WANTRES); 2102 if (s != NULL && s[0] != '\0') { 2103 #ifdef POSIX 2104 setenv("MAKEFLAGS", s, 1); 2105 #else 2106 setenv("MAKE", s, 1); 2107 #endif 2108 } 2109 } 2110 2111 char * 2112 getTmpdir(void) 2113 { 2114 static char *tmpdir = NULL; 2115 2116 if (!tmpdir) { 2117 struct stat st; 2118 2119 /* 2120 * Honor $TMPDIR but only if it is valid. 2121 * Ensure it ends with /. 2122 */ 2123 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2124 VARE_WANTRES); 2125 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2126 free(tmpdir); 2127 tmpdir = bmake_strdup(_PATH_TMP); 2128 } 2129 } 2130 return tmpdir; 2131 } 2132 2133 /* 2134 * Create and open a temp file using "pattern". 2135 * If "fnamep" is provided set it to a copy of the filename created. 2136 * Otherwise unlink the file once open. 2137 */ 2138 int 2139 mkTempFile(const char *pattern, char **fnamep) 2140 { 2141 static char *tmpdir = NULL; 2142 char tfile[MAXPATHLEN]; 2143 int fd; 2144 2145 if (!pattern) 2146 pattern = TMPPAT; 2147 if (!tmpdir) 2148 tmpdir = getTmpdir(); 2149 if (pattern[0] == '/') { 2150 snprintf(tfile, sizeof(tfile), "%s", pattern); 2151 } else { 2152 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2153 } 2154 if ((fd = mkstemp(tfile)) < 0) 2155 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2156 if (fnamep) { 2157 *fnamep = bmake_strdup(tfile); 2158 } else { 2159 unlink(tfile); /* we just want the descriptor */ 2160 } 2161 return fd; 2162 } 2163 2164 /* 2165 * Convert a string representation of a boolean. 2166 * Anything that looks like "No", "False", "Off", "0" etc, 2167 * is FALSE, otherwise TRUE. 2168 */ 2169 Boolean 2170 s2Boolean(const char *s, Boolean bf) 2171 { 2172 if (s) { 2173 switch(*s) { 2174 case '\0': /* not set - the default wins */ 2175 break; 2176 case '0': 2177 case 'F': 2178 case 'f': 2179 case 'N': 2180 case 'n': 2181 bf = FALSE; 2182 break; 2183 case 'O': 2184 case 'o': 2185 switch (s[1]) { 2186 case 'F': 2187 case 'f': 2188 bf = FALSE; 2189 break; 2190 default: 2191 bf = TRUE; 2192 break; 2193 } 2194 break; 2195 default: 2196 bf = TRUE; 2197 break; 2198 } 2199 } 2200 return bf; 2201 } 2202 2203 /* 2204 * Return a Boolean based on setting of a knob. 2205 * 2206 * If the knob is not set, the supplied default is the return value. 2207 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2208 * is FALSE, otherwise TRUE. 2209 */ 2210 Boolean 2211 getBoolean(const char *name, Boolean bf) 2212 { 2213 char tmp[64]; 2214 char *cp; 2215 2216 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2217 cp = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 2218 2219 if (cp) { 2220 bf = s2Boolean(cp, bf); 2221 free(cp); 2222 } 2223 } 2224 return bf; 2225 } 2226
Indexes created Tue Sep 23 02:09:52 GMT 2025