main.c revision 1.203
1 /* $NetBSD: main.c,v 1.203 2012/08/31 07:00:36 sjg 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 1.203 2012/08/31 07:00:36 sjg 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 1.203 2012/08/31 07:00:36 sjg 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 two optional 103 * arguments for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and two arguments. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and two arguments. 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/signal.h> 121 #include <sys/stat.h> 122 #ifdef MAKE_NATIVE 123 #include <sys/utsname.h> 124 #endif 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <fcntl.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 134 #include "make.h" 135 #include "hash.h" 136 #include "dir.h" 137 #include "job.h" 138 #include "pathnames.h" 139 #include "trace.h" 140 141 #ifdef USE_IOVEC 142 #include <sys/uio.h> 143 #endif 144 145 #ifndef DEFMAXLOCAL 146 #define DEFMAXLOCAL DEFMAXJOBS 147 #endif /* DEFMAXLOCAL */ 148 149 Lst create; /* Targets to be made */ 150 time_t now; /* Time at start of make */ 151 GNode *DEFAULT; /* .DEFAULT node */ 152 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 153 154 static Boolean noBuiltins; /* -r flag */ 155 static Lst makefiles; /* ordered list of makefiles to read */ 156 static Boolean printVars; /* print value of one or more vars */ 157 static Lst variables; /* list of variables to print */ 158 int maxJobs; /* -j argument */ 159 static int maxJobTokens; /* -j argument */ 160 Boolean compatMake; /* -B argument */ 161 int debug; /* -d argument */ 162 Boolean debugVflag; /* -dV */ 163 Boolean noExecute; /* -n flag */ 164 Boolean noRecursiveExecute; /* -N flag */ 165 Boolean keepgoing; /* -k flag */ 166 Boolean queryFlag; /* -q flag */ 167 Boolean touchFlag; /* -t flag */ 168 Boolean ignoreErrors; /* -i flag */ 169 Boolean beSilent; /* -s flag */ 170 Boolean oldVars; /* variable substitution style */ 171 Boolean checkEnvFirst; /* -e flag */ 172 Boolean parseWarnFatal; /* -W flag */ 173 Boolean jobServer; /* -J flag */ 174 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 175 Boolean varNoExportEnv; /* -X flag */ 176 Boolean doing_depend; /* Set while reading .depend */ 177 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 178 static const char * tracefile; 179 static char * Check_Cwd_av(int, char **, int); 180 static void MainParseArgs(int, char **); 181 static int ReadMakefile(const void *, const void *); 182 static void usage(void) MAKE_ATTR_DEAD; 183 184 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 185 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 186 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 187 char *progname; /* the program name */ 188 char *makeDependfile; 189 pid_t myPid; 190 191 Boolean forceJobs = FALSE; 192 193 extern Lst parseIncPath; 194 195 static void 196 parse_debug_options(const char *argvalue) 197 { 198 const char *modules; 199 const char *mode; 200 char *fname; 201 int len; 202 203 for (modules = argvalue; *modules; ++modules) { 204 switch (*modules) { 205 case 'A': 206 debug = ~0; 207 break; 208 case 'a': 209 debug |= DEBUG_ARCH; 210 break; 211 case 'C': 212 debug |= DEBUG_CWD; 213 break; 214 case 'c': 215 debug |= DEBUG_COND; 216 break; 217 case 'd': 218 debug |= DEBUG_DIR; 219 break; 220 case 'e': 221 debug |= DEBUG_ERROR; 222 break; 223 case 'f': 224 debug |= DEBUG_FOR; 225 break; 226 case 'g': 227 if (modules[1] == '1') { 228 debug |= DEBUG_GRAPH1; 229 ++modules; 230 } 231 else if (modules[1] == '2') { 232 debug |= DEBUG_GRAPH2; 233 ++modules; 234 } 235 else if (modules[1] == '3') { 236 debug |= DEBUG_GRAPH3; 237 ++modules; 238 } 239 break; 240 case 'j': 241 debug |= DEBUG_JOB; 242 break; 243 case 'l': 244 debug |= DEBUG_LOUD; 245 break; 246 case 'M': 247 debug |= DEBUG_META; 248 break; 249 case 'm': 250 debug |= DEBUG_MAKE; 251 break; 252 case 'n': 253 debug |= DEBUG_SCRIPT; 254 break; 255 case 'p': 256 debug |= DEBUG_PARSE; 257 break; 258 case 's': 259 debug |= DEBUG_SUFF; 260 break; 261 case 't': 262 debug |= DEBUG_TARG; 263 break; 264 case 'V': 265 debugVflag = TRUE; 266 break; 267 case 'v': 268 debug |= DEBUG_VAR; 269 break; 270 case 'x': 271 debug |= DEBUG_SHELL; 272 break; 273 case 'F': 274 if (debug_file != stdout && debug_file != stderr) 275 fclose(debug_file); 276 if (*++modules == '+') { 277 modules++; 278 mode = "a"; 279 } else 280 mode = "w"; 281 if (strcmp(modules, "stdout") == 0) { 282 debug_file = stdout; 283 goto debug_setbuf; 284 } 285 if (strcmp(modules, "stderr") == 0) { 286 debug_file = stderr; 287 goto debug_setbuf; 288 } 289 len = strlen(modules); 290 fname = malloc(len + 20); 291 memcpy(fname, modules, len + 1); 292 /* Let the filename be modified by the pid */ 293 if (strcmp(fname + len - 3, ".%d") == 0) 294 snprintf(fname + len - 2, 20, "%d", getpid()); 295 debug_file = fopen(fname, mode); 296 if (!debug_file) { 297 fprintf(stderr, "Cannot open debug file %s\n", 298 fname); 299 usage(); 300 } 301 free(fname); 302 goto debug_setbuf; 303 default: 304 (void)fprintf(stderr, 305 "%s: illegal argument to d option -- %c\n", 306 progname, *modules); 307 usage(); 308 } 309 } 310 debug_setbuf: 311 /* 312 * Make the debug_file unbuffered, and make 313 * stdout line buffered (unless debugfile == stdout). 314 */ 315 setvbuf(debug_file, NULL, _IONBF, 0); 316 if (debug_file != stdout) { 317 setvbuf(stdout, NULL, _IOLBF, 0); 318 } 319 } 320 321 /*- 322 * MainParseArgs -- 323 * Parse a given argument vector. Called from main() and from 324 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 325 * 326 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 327 * 328 * Results: 329 * None 330 * 331 * Side Effects: 332 * Various global and local flags will be set depending on the flags 333 * given 334 */ 335 static void 336 MainParseArgs(int argc, char **argv) 337 { 338 char *p; 339 int c = '?'; 340 int arginc; 341 char *argvalue; 342 const char *getopt_def; 343 char *optscan; 344 Boolean inOption, dashDash = FALSE; 345 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 346 347 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst" 348 /* Can't actually use getopt(3) because rescanning is not portable */ 349 350 getopt_def = OPTFLAGS; 351 rearg: 352 inOption = FALSE; 353 optscan = NULL; 354 while(argc > 1) { 355 char *getopt_spec; 356 if(!inOption) 357 optscan = argv[1]; 358 c = *optscan++; 359 arginc = 0; 360 if(inOption) { 361 if(c == '\0') { 362 ++argv; 363 --argc; 364 inOption = FALSE; 365 continue; 366 } 367 } else { 368 if (c != '-' || dashDash) 369 break; 370 inOption = TRUE; 371 c = *optscan++; 372 } 373 /* '-' found at some earlier point */ 374 getopt_spec = strchr(getopt_def, c); 375 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 376 /* -<something> found, and <something> should have an arg */ 377 inOption = FALSE; 378 arginc = 1; 379 argvalue = optscan; 380 if(*argvalue == '\0') { 381 if (argc < 3) 382 goto noarg; 383 argvalue = argv[2]; 384 arginc = 2; 385 } 386 } else { 387 argvalue = NULL; 388 } 389 switch(c) { 390 case '\0': 391 arginc = 1; 392 inOption = FALSE; 393 break; 394 case 'B': 395 compatMake = TRUE; 396 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 397 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 398 break; 399 case 'C': 400 if (chdir(argvalue) == -1) { 401 (void)fprintf(stderr, 402 "%s: chdir %s: %s\n", 403 progname, argvalue, 404 strerror(errno)); 405 exit(1); 406 } 407 if (getcwd(curdir, MAXPATHLEN) == NULL) { 408 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 409 exit(2); 410 } 411 ignorePWD = TRUE; 412 break; 413 case 'D': 414 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 415 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 416 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 417 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 418 break; 419 case 'I': 420 if (argvalue == NULL) goto noarg; 421 Parse_AddIncludeDir(argvalue); 422 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 423 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 424 break; 425 case 'J': 426 if (argvalue == NULL) goto noarg; 427 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 428 (void)fprintf(stderr, 429 "%s: internal error -- J option malformed (%s)\n", 430 progname, argvalue); 431 usage(); 432 } 433 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 434 (fcntl(jp_1, F_GETFD, 0) < 0)) { 435 #if 0 436 (void)fprintf(stderr, 437 "%s: ###### warning -- J descriptors were closed!\n", 438 progname); 439 exit(2); 440 #endif 441 jp_0 = -1; 442 jp_1 = -1; 443 compatMake = TRUE; 444 } else { 445 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 446 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 447 jobServer = TRUE; 448 } 449 break; 450 case 'N': 451 noExecute = TRUE; 452 noRecursiveExecute = TRUE; 453 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 454 break; 455 case 'S': 456 keepgoing = FALSE; 457 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 458 break; 459 case 'T': 460 if (argvalue == NULL) goto noarg; 461 tracefile = bmake_strdup(argvalue); 462 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 463 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 464 break; 465 case 'V': 466 if (argvalue == NULL) goto noarg; 467 printVars = TRUE; 468 (void)Lst_AtEnd(variables, argvalue); 469 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 470 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 471 break; 472 case 'W': 473 parseWarnFatal = TRUE; 474 break; 475 case 'X': 476 varNoExportEnv = TRUE; 477 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 478 break; 479 case 'd': 480 if (argvalue == NULL) goto noarg; 481 /* If '-d-opts' don't pass to children */ 482 if (argvalue[0] == '-') 483 argvalue++; 484 else { 485 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 486 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 487 } 488 parse_debug_options(argvalue); 489 break; 490 case 'e': 491 checkEnvFirst = TRUE; 492 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 493 break; 494 case 'f': 495 if (argvalue == NULL) goto noarg; 496 (void)Lst_AtEnd(makefiles, argvalue); 497 break; 498 case 'i': 499 ignoreErrors = TRUE; 500 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 501 break; 502 case 'j': 503 if (argvalue == NULL) goto noarg; 504 forceJobs = TRUE; 505 maxJobs = strtol(argvalue, &p, 0); 506 if (*p != '\0' || maxJobs < 1) { 507 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 508 progname); 509 exit(1); 510 } 511 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 512 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 513 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 514 maxJobTokens = maxJobs; 515 break; 516 case 'k': 517 keepgoing = TRUE; 518 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 519 break; 520 case 'm': 521 if (argvalue == NULL) goto noarg; 522 /* look for magic parent directory search string */ 523 if (strncmp(".../", argvalue, 4) == 0) { 524 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 525 found_path, sizeof(found_path))) 526 break; /* nothing doing */ 527 (void)Dir_AddDir(sysIncPath, found_path); 528 } else { 529 (void)Dir_AddDir(sysIncPath, argvalue); 530 } 531 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 532 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 533 break; 534 case 'n': 535 noExecute = TRUE; 536 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 537 break; 538 case 'q': 539 queryFlag = TRUE; 540 /* Kind of nonsensical, wot? */ 541 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 542 break; 543 case 'r': 544 noBuiltins = TRUE; 545 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 546 break; 547 case 's': 548 beSilent = TRUE; 549 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 550 break; 551 case 't': 552 touchFlag = TRUE; 553 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 554 break; 555 case '-': 556 dashDash = TRUE; 557 break; 558 default: 559 case '?': 560 usage(); 561 } 562 argv += arginc; 563 argc -= arginc; 564 } 565 566 oldVars = TRUE; 567 568 /* 569 * See if the rest of the arguments are variable assignments and 570 * perform them if so. Else take them to be targets and stuff them 571 * on the end of the "create" list. 572 */ 573 for (; argc > 1; ++argv, --argc) 574 if (Parse_IsVar(argv[1])) { 575 Parse_DoVar(argv[1], VAR_CMD); 576 } else { 577 if (!*argv[1]) 578 Punt("illegal (null) argument."); 579 if (*argv[1] == '-' && !dashDash) 580 goto rearg; 581 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 582 } 583 584 return; 585 noarg: 586 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 587 progname, c); 588 usage(); 589 } 590 591 /*- 592 * Main_ParseArgLine -- 593 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 594 * is encountered and by main() when reading the .MAKEFLAGS envariable. 595 * Takes a line of arguments and breaks it into its 596 * component words and passes those words and the number of them to the 597 * MainParseArgs function. 598 * The line should have all its leading whitespace removed. 599 * 600 * Input: 601 * line Line to fracture 602 * 603 * Results: 604 * None 605 * 606 * Side Effects: 607 * Only those that come from the various arguments. 608 */ 609 void 610 Main_ParseArgLine(const char *line) 611 { 612 char **argv; /* Manufactured argument vector */ 613 int argc; /* Number of arguments in argv */ 614 char *args; /* Space used by the args */ 615 char *buf, *p1; 616 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 617 size_t len; 618 619 if (line == NULL) 620 return; 621 for (; *line == ' '; ++line) 622 continue; 623 if (!*line) 624 return; 625 626 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 627 (void)snprintf(buf, len, "%s %s", argv0, line); 628 if (p1) 629 free(p1); 630 631 argv = brk_string(buf, &argc, TRUE, &args); 632 if (argv == NULL) { 633 Error("Unterminated quoted string [%s]", buf); 634 free(buf); 635 return; 636 } 637 free(buf); 638 MainParseArgs(argc, argv); 639 640 free(args); 641 free(argv); 642 } 643 644 Boolean 645 Main_SetObjdir(const char *path) 646 { 647 struct stat sb; 648 char *p = NULL; 649 char buf[MAXPATHLEN + 1]; 650 Boolean rc = FALSE; 651 652 /* expand variable substitutions */ 653 if (strchr(path, '$') != 0) { 654 snprintf(buf, MAXPATHLEN, "%s", path); 655 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 656 } 657 658 if (path[0] != '/') { 659 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 660 path = buf; 661 } 662 663 /* look for the directory and try to chdir there */ 664 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 665 if (chdir(path)) { 666 (void)fprintf(stderr, "make warning: %s: %s.\n", 667 path, strerror(errno)); 668 } else { 669 strncpy(objdir, path, MAXPATHLEN); 670 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 671 setenv("PWD", objdir, 1); 672 Dir_InitDot(); 673 rc = TRUE; 674 } 675 } 676 677 if (p) 678 free(p); 679 return rc; 680 } 681 682 /*- 683 * ReadAllMakefiles -- 684 * wrapper around ReadMakefile() to read all. 685 * 686 * Results: 687 * TRUE if ok, FALSE on error 688 */ 689 static int 690 ReadAllMakefiles(const void *p, const void *q) 691 { 692 return (ReadMakefile(p, q) == 0); 693 } 694 695 int 696 str2Lst_Append(Lst lp, char *str, const char *sep) 697 { 698 char *cp; 699 int n; 700 701 if (!sep) 702 sep = " \t"; 703 704 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 705 (void)Lst_AtEnd(lp, cp); 706 n++; 707 } 708 return (n); 709 } 710 711 #ifdef SIGINFO 712 /*ARGSUSED*/ 713 static void 714 siginfo(int signo MAKE_ATTR_UNUSED) 715 { 716 char dir[MAXPATHLEN]; 717 char str[2 * MAXPATHLEN]; 718 int len; 719 if (getcwd(dir, sizeof(dir)) == NULL) 720 return; 721 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 722 if (len > 0) 723 (void)write(STDERR_FILENO, str, (size_t)len); 724 } 725 #endif 726 727 /* 728 * Allow makefiles some control over the mode we run in. 729 */ 730 void 731 MakeMode(const char *mode) 732 { 733 char *mp = NULL; 734 735 if (!mode) 736 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 737 738 if (mode && *mode) { 739 if (strstr(mode, "compat")) { 740 compatMake = TRUE; 741 forceJobs = FALSE; 742 } 743 #if USE_META 744 if (strstr(mode, "meta")) 745 meta_init(mode); 746 #endif 747 } 748 if (mp) 749 free(mp); 750 } 751 752 /*- 753 * main -- 754 * The main function, for obvious reasons. Initializes variables 755 * and a few modules, then parses the arguments give it in the 756 * environment and on the command line. Reads the system makefile 757 * followed by either Makefile, makefile or the file given by the 758 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 759 * flags it has received by then uses either the Make or the Compat 760 * module to create the initial list of targets. 761 * 762 * Results: 763 * If -q was given, exits -1 if anything was out-of-date. Else it exits 764 * 0. 765 * 766 * Side Effects: 767 * The program exits when done. Targets are created. etc. etc. etc. 768 */ 769 int 770 main(int argc, char **argv) 771 { 772 Lst targs; /* target nodes to create -- passed to Make_Init */ 773 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 774 struct stat sb, sa; 775 char *p1, *path, *pwd; 776 char mdpath[MAXPATHLEN]; 777 const char *machine = getenv("MACHINE"); 778 const char *machine_arch = getenv("MACHINE_ARCH"); 779 char *syspath = getenv("MAKESYSPATH"); 780 Lst sysMkPath; /* Path of sys.mk */ 781 char *cp = NULL, *start; 782 /* avoid faults on read-only strings */ 783 static char defsyspath[] = _PATH_DEFSYSPATH; 784 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 785 struct timeval rightnow; /* to initialize random seed */ 786 #ifdef MAKE_NATIVE 787 struct utsname utsname; 788 #endif 789 790 /* default to writing debug to stderr */ 791 debug_file = stderr; 792 793 #ifdef SIGINFO 794 (void)bmake_signal(SIGINFO, siginfo); 795 #endif 796 /* 797 * Set the seed to produce a different random sequence 798 * on each program execution. 799 */ 800 gettimeofday(&rightnow, NULL); 801 srandom(rightnow.tv_sec + rightnow.tv_usec); 802 803 if ((progname = strrchr(argv[0], '/')) != NULL) 804 progname++; 805 else 806 progname = argv[0]; 807 #ifdef RLIMIT_NOFILE 808 /* 809 * get rid of resource limit on file descriptors 810 */ 811 { 812 struct rlimit rl; 813 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 814 rl.rlim_cur != rl.rlim_max) { 815 rl.rlim_cur = rl.rlim_max; 816 (void)setrlimit(RLIMIT_NOFILE, &rl); 817 } 818 } 819 #endif 820 821 /* 822 * Get the name of this type of MACHINE from utsname 823 * so we can share an executable for similar machines. 824 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 825 * 826 * Note that both MACHINE and MACHINE_ARCH are decided at 827 * run-time. 828 */ 829 if (!machine) { 830 #ifdef MAKE_NATIVE 831 if (uname(&utsname) == -1) { 832 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 833 strerror(errno)); 834 exit(2); 835 } 836 machine = utsname.machine; 837 #else 838 #ifdef MAKE_MACHINE 839 machine = MAKE_MACHINE; 840 #else 841 machine = "unknown"; 842 #endif 843 #endif 844 } 845 846 if (!machine_arch) { 847 #ifndef MACHINE_ARCH 848 #ifdef MAKE_MACHINE_ARCH 849 machine_arch = MAKE_MACHINE_ARCH; 850 #else 851 machine_arch = "unknown"; 852 #endif 853 #else 854 machine_arch = MACHINE_ARCH; 855 #endif 856 } 857 858 myPid = getpid(); /* remember this for vFork() */ 859 860 /* 861 * Just in case MAKEOBJDIR wants us to do something tricky. 862 */ 863 Var_Init(); /* Initialize the lists of variables for 864 * parsing arguments */ 865 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 866 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 867 #ifdef MAKE_VERSION 868 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 869 #endif 870 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 871 /* 872 * This is the traditional preference for makefiles. 873 */ 874 #ifndef MAKEFILE_PREFERENCE_LIST 875 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 876 #endif 877 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 878 VAR_GLOBAL, 0); 879 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 880 881 create = Lst_Init(FALSE); 882 makefiles = Lst_Init(FALSE); 883 printVars = FALSE; 884 debugVflag = FALSE; 885 variables = Lst_Init(FALSE); 886 beSilent = FALSE; /* Print commands as executed */ 887 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 888 noExecute = FALSE; /* Execute all commands */ 889 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 890 keepgoing = FALSE; /* Stop on error */ 891 allPrecious = FALSE; /* Remove targets when interrupted */ 892 queryFlag = FALSE; /* This is not just a check-run */ 893 noBuiltins = FALSE; /* Read the built-in rules */ 894 touchFlag = FALSE; /* Actually update targets */ 895 debug = 0; /* No debug verbosity, please. */ 896 jobsRunning = FALSE; 897 898 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 899 maxJobTokens = maxJobs; 900 compatMake = FALSE; /* No compat mode */ 901 ignorePWD = FALSE; 902 903 /* 904 * Initialize the parsing, directory and variable modules to prepare 905 * for the reading of inclusion paths and variable settings on the 906 * command line 907 */ 908 909 /* 910 * Initialize various variables. 911 * MAKE also gets this name, for compatibility 912 * .MAKEFLAGS gets set to the empty string just in case. 913 * MFLAGS also gets initialized empty, for compatibility. 914 */ 915 Parse_Init(); 916 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 917 /* 918 * Leave alone if it is an absolute path, or if it does 919 * not contain a '/' in which case we need to find it in 920 * the path, like execvp(3) and the shells do. 921 */ 922 p1 = argv[0]; 923 } else { 924 /* 925 * A relative path, canonicalize it. 926 */ 927 p1 = realpath(argv[0], mdpath); 928 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 929 p1 = argv[0]; /* realpath failed */ 930 } 931 } 932 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 933 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 934 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 935 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 936 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 937 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 938 939 /* 940 * Set some other useful macros 941 */ 942 { 943 char tmp[64]; 944 const char *ep; 945 946 if (!(ep = getenv(MAKE_LEVEL))) { 947 ep = "0"; 948 } 949 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0); 950 snprintf(tmp, sizeof(tmp), "%u", myPid); 951 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 952 snprintf(tmp, sizeof(tmp), "%u", getppid()); 953 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 954 } 955 Job_SetPrefix(); 956 957 /* 958 * First snag any flags out of the MAKE environment variable. 959 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 960 * in a different format). 961 */ 962 #ifdef POSIX 963 Main_ParseArgLine(getenv("MAKEFLAGS")); 964 #else 965 Main_ParseArgLine(getenv("MAKE")); 966 #endif 967 968 /* 969 * Find where we are (now). 970 * We take care of PWD for the automounter below... 971 */ 972 if (getcwd(curdir, MAXPATHLEN) == NULL) { 973 (void)fprintf(stderr, "%s: getcwd: %s.\n", 974 progname, strerror(errno)); 975 exit(2); 976 } 977 978 MainParseArgs(argc, argv); 979 980 /* 981 * Verify that cwd is sane. 982 */ 983 if (stat(curdir, &sa) == -1) { 984 (void)fprintf(stderr, "%s: %s: %s.\n", 985 progname, curdir, strerror(errno)); 986 exit(2); 987 } 988 989 /* 990 * All this code is so that we know where we are when we start up 991 * on a different machine with pmake. 992 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 993 * since the value of curdir can vary depending on how we got 994 * here. Ie sitting at a shell prompt (shell that provides $PWD) 995 * or via subdir.mk in which case its likely a shell which does 996 * not provide it. 997 * So, to stop it breaking this case only, we ignore PWD if 998 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 999 */ 1000 if (!ignorePWD && 1001 (pwd = getenv("PWD")) != NULL && 1002 getenv("MAKEOBJDIRPREFIX") == NULL) { 1003 const char *makeobjdir = getenv("MAKEOBJDIR"); 1004 1005 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1006 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 1007 sa.st_dev == sb.st_dev) 1008 (void)strncpy(curdir, pwd, MAXPATHLEN); 1009 } 1010 } 1011 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1012 1013 /* 1014 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1015 * MAKEOBJDIR is set in the environment, try only that value 1016 * and fall back to .CURDIR if it does not exist. 1017 * 1018 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1019 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1020 * of these paths exist, just use .CURDIR. 1021 */ 1022 Dir_Init(curdir); 1023 (void)Main_SetObjdir(curdir); 1024 1025 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1026 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1027 (void)Main_SetObjdir(mdpath); 1028 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1029 (void)Main_SetObjdir(path); 1030 } else { 1031 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1032 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1033 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1034 _PATH_OBJDIRPREFIX, curdir); 1035 (void)Main_SetObjdir(mdpath); 1036 } 1037 } 1038 1039 /* 1040 * Be compatible if user did not specify -j and did not explicitly 1041 * turned compatibility on 1042 */ 1043 if (!compatMake && !forceJobs) { 1044 compatMake = TRUE; 1045 } 1046 1047 /* 1048 * Initialize archive, target and suffix modules in preparation for 1049 * parsing the makefile(s) 1050 */ 1051 Arch_Init(); 1052 Targ_Init(); 1053 Suff_Init(); 1054 Trace_Init(tracefile); 1055 1056 DEFAULT = NULL; 1057 (void)time(&now); 1058 1059 Trace_Log(MAKESTART, NULL); 1060 1061 /* 1062 * Set up the .TARGETS variable to contain the list of targets to be 1063 * created. If none specified, make the variable empty -- the parser 1064 * will fill the thing in with the default or .MAIN target. 1065 */ 1066 if (!Lst_IsEmpty(create)) { 1067 LstNode ln; 1068 1069 for (ln = Lst_First(create); ln != NULL; 1070 ln = Lst_Succ(ln)) { 1071 char *name = (char *)Lst_Datum(ln); 1072 1073 Var_Append(".TARGETS", name, VAR_GLOBAL); 1074 } 1075 } else 1076 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1077 1078 1079 /* 1080 * If no user-supplied system path was given (through the -m option) 1081 * add the directories from the DEFSYSPATH (more than one may be given 1082 * as dir1:...:dirn) to the system include path. 1083 */ 1084 if (syspath == NULL || *syspath == '\0') 1085 syspath = defsyspath; 1086 else 1087 syspath = bmake_strdup(syspath); 1088 1089 for (start = syspath; *start != '\0'; start = cp) { 1090 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1091 continue; 1092 if (*cp == ':') { 1093 *cp++ = '\0'; 1094 } 1095 /* look for magic parent directory search string */ 1096 if (strncmp(".../", start, 4) != 0) { 1097 (void)Dir_AddDir(defIncPath, start); 1098 } else { 1099 if (Dir_FindHereOrAbove(curdir, start+4, 1100 found_path, sizeof(found_path))) { 1101 (void)Dir_AddDir(defIncPath, found_path); 1102 } 1103 } 1104 } 1105 if (syspath != defsyspath) 1106 free(syspath); 1107 1108 /* 1109 * Read in the built-in rules first, followed by the specified 1110 * makefile, if it was (makefile != NULL), or the default 1111 * makefile and Makefile, in that order, if it wasn't. 1112 */ 1113 if (!noBuiltins) { 1114 LstNode ln; 1115 1116 sysMkPath = Lst_Init(FALSE); 1117 Dir_Expand(_PATH_DEFSYSMK, 1118 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1119 sysMkPath); 1120 if (Lst_IsEmpty(sysMkPath)) 1121 Fatal("%s: no system rules (%s).", progname, 1122 _PATH_DEFSYSMK); 1123 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1124 if (ln == NULL) 1125 Fatal("%s: cannot open %s.", progname, 1126 (char *)Lst_Datum(ln)); 1127 } 1128 1129 if (!Lst_IsEmpty(makefiles)) { 1130 LstNode ln; 1131 1132 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1133 if (ln != NULL) 1134 Fatal("%s: cannot open %s.", progname, 1135 (char *)Lst_Datum(ln)); 1136 } else { 1137 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1138 VAR_CMD, 0); 1139 if (p1) { 1140 (void)str2Lst_Append(makefiles, p1, NULL); 1141 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1142 free(p1); 1143 } 1144 } 1145 1146 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1147 if (!noBuiltins || !printVars) { 1148 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1149 VAR_CMD, 0); 1150 doing_depend = TRUE; 1151 (void)ReadMakefile(makeDependfile, NULL); 1152 doing_depend = FALSE; 1153 } 1154 1155 MakeMode(NULL); 1156 1157 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1158 if (p1) 1159 free(p1); 1160 1161 if (!compatMake) 1162 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1163 if (DEBUG(JOB)) 1164 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1165 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1166 1167 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1168 1169 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1170 1171 1172 /* 1173 * For compatibility, look at the directories in the VPATH variable 1174 * and add them to the search path, if the variable is defined. The 1175 * variable's value is in the same format as the PATH envariable, i.e. 1176 * <directory>:<directory>:<directory>... 1177 */ 1178 if (Var_Exists("VPATH", VAR_CMD)) { 1179 char *vpath, savec; 1180 /* 1181 * GCC stores string constants in read-only memory, but 1182 * Var_Subst will want to write this thing, so store it 1183 * in an array 1184 */ 1185 static char VPATH[] = "${VPATH}"; 1186 1187 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1188 path = vpath; 1189 do { 1190 /* skip to end of directory */ 1191 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1192 continue; 1193 /* Save terminator character so know when to stop */ 1194 savec = *cp; 1195 *cp = '\0'; 1196 /* Add directory to search path */ 1197 (void)Dir_AddDir(dirSearchPath, path); 1198 *cp = savec; 1199 path = cp + 1; 1200 } while (savec == ':'); 1201 free(vpath); 1202 } 1203 1204 /* 1205 * Now that all search paths have been read for suffixes et al, it's 1206 * time to add the default search path to their lists... 1207 */ 1208 Suff_DoPaths(); 1209 1210 /* 1211 * Propagate attributes through :: dependency lists. 1212 */ 1213 Targ_Propagate(); 1214 1215 /* print the initial graph, if the user requested it */ 1216 if (DEBUG(GRAPH1)) 1217 Targ_PrintGraph(1); 1218 1219 /* print the values of any variables requested by the user */ 1220 if (printVars) { 1221 LstNode ln; 1222 Boolean expandVars; 1223 1224 if (debugVflag) 1225 expandVars = FALSE; 1226 else 1227 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1228 for (ln = Lst_First(variables); ln != NULL; 1229 ln = Lst_Succ(ln)) { 1230 char *var = (char *)Lst_Datum(ln); 1231 char *value; 1232 1233 if (strchr(var, '$')) { 1234 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1235 } else if (expandVars) { 1236 char tmp[128]; 1237 1238 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1239 Fatal("%s: variable name too big: %s", 1240 progname, var); 1241 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1242 } else { 1243 value = Var_Value(var, VAR_GLOBAL, &p1); 1244 } 1245 printf("%s\n", value ? value : ""); 1246 if (p1) 1247 free(p1); 1248 } 1249 } else { 1250 /* 1251 * Have now read the entire graph and need to make a list of 1252 * targets to create. If none was given on the command line, 1253 * we consult the parsing module to find the main target(s) 1254 * to create. 1255 */ 1256 if (Lst_IsEmpty(create)) 1257 targs = Parse_MainName(); 1258 else 1259 targs = Targ_FindList(create, TARG_CREATE); 1260 1261 if (!compatMake) { 1262 /* 1263 * Initialize job module before traversing the graph 1264 * now that any .BEGIN and .END targets have been read. 1265 * This is done only if the -q flag wasn't given 1266 * (to prevent the .BEGIN from being executed should 1267 * it exist). 1268 */ 1269 if (!queryFlag) { 1270 Job_Init(); 1271 jobsRunning = TRUE; 1272 } 1273 1274 /* Traverse the graph, checking on all the targets */ 1275 outOfDate = Make_Run(targs); 1276 } else { 1277 /* 1278 * Compat_Init will take care of creating all the 1279 * targets as well as initializing the module. 1280 */ 1281 Compat_Run(targs); 1282 } 1283 } 1284 1285 #ifdef CLEANUP 1286 Lst_Destroy(targs, NULL); 1287 Lst_Destroy(variables, NULL); 1288 Lst_Destroy(makefiles, NULL); 1289 Lst_Destroy(create, (FreeProc *)free); 1290 #endif 1291 1292 /* print the graph now it's been processed if the user requested it */ 1293 if (DEBUG(GRAPH2)) 1294 Targ_PrintGraph(2); 1295 1296 Trace_Log(MAKEEND, 0); 1297 1298 Suff_End(); 1299 Targ_End(); 1300 Arch_End(); 1301 Var_End(); 1302 Parse_End(); 1303 Dir_End(); 1304 Job_End(); 1305 Trace_End(); 1306 1307 return outOfDate ? 1 : 0; 1308 } 1309 1310 /*- 1311 * ReadMakefile -- 1312 * Open and parse the given makefile. 1313 * 1314 * Results: 1315 * 0 if ok. -1 if couldn't open file. 1316 * 1317 * Side Effects: 1318 * lots 1319 */ 1320 static int 1321 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1322 { 1323 const char *fname = p; /* makefile to read */ 1324 int fd; 1325 size_t len = MAXPATHLEN; 1326 char *name, *path = bmake_malloc(len); 1327 1328 if (!strcmp(fname, "-")) { 1329 Parse_File(NULL /*stdin*/, -1); 1330 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1331 } else { 1332 /* if we've chdir'd, rebuild the path name */ 1333 if (strcmp(curdir, objdir) && *fname != '/') { 1334 size_t plen = strlen(curdir) + strlen(fname) + 2; 1335 if (len < plen) 1336 path = bmake_realloc(path, len = 2 * plen); 1337 1338 (void)snprintf(path, len, "%s/%s", curdir, fname); 1339 fd = open(path, O_RDONLY); 1340 if (fd != -1) { 1341 fname = path; 1342 goto found; 1343 } 1344 1345 /* If curdir failed, try objdir (ala .depend) */ 1346 plen = strlen(objdir) + strlen(fname) + 2; 1347 if (len < plen) 1348 path = bmake_realloc(path, len = 2 * plen); 1349 (void)snprintf(path, len, "%s/%s", objdir, fname); 1350 fd = open(path, O_RDONLY); 1351 if (fd != -1) { 1352 fname = path; 1353 goto found; 1354 } 1355 } else { 1356 fd = open(fname, O_RDONLY); 1357 if (fd != -1) 1358 goto found; 1359 } 1360 /* look in -I and system include directories. */ 1361 name = Dir_FindFile(fname, parseIncPath); 1362 if (!name) 1363 name = Dir_FindFile(fname, 1364 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1365 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1366 if (name) 1367 free(name); 1368 free(path); 1369 return(-1); 1370 } 1371 fname = name; 1372 /* 1373 * set the MAKEFILE variable desired by System V fans -- the 1374 * placement of the setting here means it gets set to the last 1375 * makefile specified, as it is set by SysV make. 1376 */ 1377 found: 1378 if (!doing_depend) 1379 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1380 Parse_File(fname, fd); 1381 } 1382 free(path); 1383 return(0); 1384 } 1385 1386 1387 /* 1388 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1389 * in situations that would not arrise with ./obj (links or not). 1390 * This tends to break things like: 1391 * 1392 * build: 1393 * ${MAKE} includes 1394 * 1395 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1396 * opposed to an argument) in a command line and if so returns 1397 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1398 * the Makefile hold true. 1399 * 1400 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1401 * 1402 * The chdir() only happens in the child process, and does nothing if 1403 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1404 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1405 * do nothing - to ensure historic semantics can be retained. 1406 */ 1407 static int Check_Cwd_Off = 0; 1408 1409 static char * 1410 Check_Cwd_av(int ac, char **av, int copy) 1411 { 1412 static char *make[4]; 1413 static char *cur_dir = NULL; 1414 char **mp; 1415 char *cp; 1416 int is_cmd, next_cmd; 1417 int i; 1418 int n; 1419 1420 if (Check_Cwd_Off) { 1421 if (DEBUG(CWD)) 1422 fprintf(debug_file, "check_cwd: check is off.\n"); 1423 return NULL; 1424 } 1425 1426 if (make[0] == NULL) { 1427 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1428 Check_Cwd_Off = 1; 1429 if (DEBUG(CWD)) 1430 fprintf(debug_file, "check_cwd: turning check off.\n"); 1431 return NULL; 1432 } 1433 1434 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1435 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1436 make[0] = make[1]; 1437 make[1] = NULL; 1438 } else 1439 ++make[0]; 1440 make[2] = NULL; 1441 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1442 } 1443 if (ac == 0 || av == NULL) { 1444 if (DEBUG(CWD)) 1445 fprintf(debug_file, "check_cwd: empty command.\n"); 1446 return NULL; /* initialization only */ 1447 } 1448 1449 if (getenv("MAKEOBJDIR") == NULL && 1450 getenv("MAKEOBJDIRPREFIX") == NULL) { 1451 if (DEBUG(CWD)) 1452 fprintf(debug_file, "check_cwd: no obj dirs.\n"); 1453 return NULL; 1454 } 1455 1456 1457 next_cmd = 1; 1458 for (i = 0; i < ac; ++i) { 1459 is_cmd = next_cmd; 1460 1461 n = strlen(av[i]); 1462 cp = &(av[i])[n - 1]; 1463 if (strspn(av[i], "|&;") == (size_t)n) { 1464 next_cmd = 1; 1465 continue; 1466 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1467 next_cmd = 1; 1468 if (copy) { 1469 do { 1470 *cp-- = '\0'; 1471 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1472 *cp == ')' || *cp == '}') ; 1473 } else { 1474 /* 1475 * XXX this should not happen. 1476 */ 1477 fprintf(stderr, "%s: WARNING: raw arg ends in shell meta '%s'\n", 1478 progname, av[i]); 1479 } 1480 } else 1481 next_cmd = 0; 1482 1483 cp = av[i]; 1484 if (*cp == ';' || *cp == '&' || *cp == '|') 1485 is_cmd = 1; 1486 1487 if (DEBUG(CWD)) 1488 fprintf(debug_file, "av[%d] == %s '%s'", 1489 i, (is_cmd) ? "cmd" : "arg", av[i]); 1490 if (is_cmd != 0) { 1491 if (*cp == '(' || *cp == '{' || 1492 *cp == ';' || *cp == '&' || *cp == '|') { 1493 do { 1494 ++cp; 1495 } while (*cp == '(' || *cp == '{' || 1496 *cp == ';' || *cp == '&' || *cp == '|'); 1497 if (*cp == '\0') { 1498 next_cmd = 1; 1499 continue; 1500 } 1501 } 1502 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1503 if (DEBUG(CWD)) 1504 fprintf(debug_file, " == cd, done.\n"); 1505 return NULL; 1506 } 1507 for (mp = make; *mp != NULL; ++mp) { 1508 n = strlen(*mp); 1509 if (strcmp(cp, *mp) == 0) { 1510 if (DEBUG(CWD)) 1511 fprintf(debug_file, " %s == '%s', chdir(%s)\n", 1512 cp, *mp, cur_dir); 1513 return cur_dir; 1514 } 1515 } 1516 } 1517 if (DEBUG(CWD)) 1518 fprintf(debug_file, "\n"); 1519 } 1520 return NULL; 1521 } 1522 1523 char * 1524 Check_Cwd_Cmd(const char *cmd) 1525 { 1526 char *cp, *bp; 1527 char **av; 1528 int ac; 1529 1530 if (Check_Cwd_Off) 1531 return NULL; 1532 1533 if (cmd) { 1534 av = brk_string(cmd, &ac, TRUE, &bp); 1535 if (DEBUG(CWD)) 1536 fprintf(debug_file, "splitting: '%s' -> %d words\n", 1537 cmd, ac); 1538 } else { 1539 ac = 0; 1540 av = NULL; 1541 bp = NULL; 1542 } 1543 cp = Check_Cwd_av(ac, av, 1); 1544 if (bp) 1545 free(bp); 1546 if (av) 1547 free(av); 1548 return cp; 1549 } 1550 1551 void 1552 Check_Cwd(const char **argv) 1553 { 1554 char *cp; 1555 int ac; 1556 1557 if (Check_Cwd_Off) 1558 return; 1559 1560 for (ac = 0; argv[ac] != NULL; ++ac) 1561 /* NOTHING */; 1562 if (ac == 3 && *argv[1] == '-') { 1563 cp = Check_Cwd_Cmd(argv[2]); 1564 } else { 1565 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1566 } 1567 if (cp) { 1568 chdir(cp); 1569 } 1570 } 1571 1572 /*- 1573 * Cmd_Exec -- 1574 * Execute the command in cmd, and return the output of that command 1575 * in a string. 1576 * 1577 * Results: 1578 * A string containing the output of the command, or the empty string 1579 * If errnum is not NULL, it contains the reason for the command failure 1580 * 1581 * Side Effects: 1582 * The string must be freed by the caller. 1583 */ 1584 char * 1585 Cmd_Exec(const char *cmd, const char **errnum) 1586 { 1587 const char *args[4]; /* Args for invoking the shell */ 1588 int fds[2]; /* Pipe streams */ 1589 int cpid; /* Child PID */ 1590 int pid; /* PID from wait() */ 1591 char *res; /* result */ 1592 int status; /* command exit status */ 1593 Buffer buf; /* buffer to store the result */ 1594 char *cp; 1595 int cc; 1596 1597 1598 *errnum = NULL; 1599 1600 if (!shellName) 1601 Shell_Init(); 1602 /* 1603 * Set up arguments for shell 1604 */ 1605 args[0] = shellName; 1606 args[1] = "-c"; 1607 args[2] = cmd; 1608 args[3] = NULL; 1609 1610 /* 1611 * Open a pipe for fetching its output 1612 */ 1613 if (pipe(fds) == -1) { 1614 *errnum = "Couldn't create pipe for \"%s\""; 1615 goto bad; 1616 } 1617 1618 /* 1619 * Fork 1620 */ 1621 switch (cpid = vFork()) { 1622 case 0: 1623 /* 1624 * Close input side of pipe 1625 */ 1626 (void)close(fds[0]); 1627 1628 /* 1629 * Duplicate the output stream to the shell's output, then 1630 * shut the extra thing down. Note we don't fetch the error 1631 * stream...why not? Why? 1632 */ 1633 (void)dup2(fds[1], 1); 1634 (void)close(fds[1]); 1635 1636 Var_ExportVars(); 1637 1638 (void)execv(shellPath, UNCONST(args)); 1639 _exit(1); 1640 /*NOTREACHED*/ 1641 1642 case -1: 1643 *errnum = "Couldn't exec \"%s\""; 1644 goto bad; 1645 1646 default: 1647 /* 1648 * No need for the writing half 1649 */ 1650 (void)close(fds[1]); 1651 1652 Buf_Init(&buf, 0); 1653 1654 do { 1655 char result[BUFSIZ]; 1656 cc = read(fds[0], result, sizeof(result)); 1657 if (cc > 0) 1658 Buf_AddBytes(&buf, cc, result); 1659 } 1660 while (cc > 0 || (cc == -1 && errno == EINTR)); 1661 1662 /* 1663 * Close the input side of the pipe. 1664 */ 1665 (void)close(fds[0]); 1666 1667 /* 1668 * Wait for the process to exit. 1669 */ 1670 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1671 JobReapChild(pid, status, FALSE); 1672 continue; 1673 } 1674 cc = Buf_Size(&buf); 1675 res = Buf_Destroy(&buf, FALSE); 1676 1677 if (cc == 0) 1678 *errnum = "Couldn't read shell's output for \"%s\""; 1679 1680 if (WIFSIGNALED(status)) 1681 *errnum = "\"%s\" exited on a signal"; 1682 else if (WEXITSTATUS(status) != 0) 1683 *errnum = "\"%s\" returned non-zero status"; 1684 1685 /* 1686 * Null-terminate the result, convert newlines to spaces and 1687 * install it in the variable. 1688 */ 1689 res[cc] = '\0'; 1690 cp = &res[cc]; 1691 1692 if (cc > 0 && *--cp == '\n') { 1693 /* 1694 * A final newline is just stripped 1695 */ 1696 *cp-- = '\0'; 1697 } 1698 while (cp >= res) { 1699 if (*cp == '\n') { 1700 *cp = ' '; 1701 } 1702 cp--; 1703 } 1704 break; 1705 } 1706 return res; 1707 bad: 1708 res = bmake_malloc(1); 1709 *res = '\0'; 1710 return res; 1711 } 1712 1713 /*- 1714 * Error -- 1715 * Print an error message given its format. 1716 * 1717 * Results: 1718 * None. 1719 * 1720 * Side Effects: 1721 * The message is printed. 1722 */ 1723 /* VARARGS */ 1724 void 1725 Error(const char *fmt, ...) 1726 { 1727 va_list ap; 1728 FILE *err_file; 1729 1730 err_file = debug_file; 1731 if (err_file == stdout) 1732 err_file = stderr; 1733 (void)fflush(stdout); 1734 for (;;) { 1735 va_start(ap, fmt); 1736 fprintf(err_file, "%s: ", progname); 1737 (void)vfprintf(err_file, fmt, ap); 1738 va_end(ap); 1739 (void)fprintf(err_file, "\n"); 1740 (void)fflush(err_file); 1741 if (err_file == stderr) 1742 break; 1743 err_file = stderr; 1744 } 1745 } 1746 1747 /*- 1748 * Fatal -- 1749 * Produce a Fatal error message. If jobs are running, waits for them 1750 * to finish. 1751 * 1752 * Results: 1753 * None 1754 * 1755 * Side Effects: 1756 * The program exits 1757 */ 1758 /* VARARGS */ 1759 void 1760 Fatal(const char *fmt, ...) 1761 { 1762 va_list ap; 1763 1764 va_start(ap, fmt); 1765 if (jobsRunning) 1766 Job_Wait(); 1767 1768 (void)fflush(stdout); 1769 (void)vfprintf(stderr, fmt, ap); 1770 va_end(ap); 1771 (void)fprintf(stderr, "\n"); 1772 (void)fflush(stderr); 1773 1774 PrintOnError(NULL, NULL); 1775 1776 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1777 Targ_PrintGraph(2); 1778 Trace_Log(MAKEERROR, 0); 1779 exit(2); /* Not 1 so -q can distinguish error */ 1780 } 1781 1782 /* 1783 * Punt -- 1784 * Major exception once jobs are being created. Kills all jobs, prints 1785 * a message and exits. 1786 * 1787 * Results: 1788 * None 1789 * 1790 * Side Effects: 1791 * All children are killed indiscriminately and the program Lib_Exits 1792 */ 1793 /* VARARGS */ 1794 void 1795 Punt(const char *fmt, ...) 1796 { 1797 va_list ap; 1798 1799 va_start(ap, fmt); 1800 (void)fflush(stdout); 1801 (void)fprintf(stderr, "%s: ", progname); 1802 (void)vfprintf(stderr, fmt, ap); 1803 va_end(ap); 1804 (void)fprintf(stderr, "\n"); 1805 (void)fflush(stderr); 1806 1807 PrintOnError(NULL, NULL); 1808 1809 DieHorribly(); 1810 } 1811 1812 /*- 1813 * DieHorribly -- 1814 * Exit without giving a message. 1815 * 1816 * Results: 1817 * None 1818 * 1819 * Side Effects: 1820 * A big one... 1821 */ 1822 void 1823 DieHorribly(void) 1824 { 1825 if (jobsRunning) 1826 Job_AbortAll(); 1827 if (DEBUG(GRAPH2)) 1828 Targ_PrintGraph(2); 1829 Trace_Log(MAKEERROR, 0); 1830 exit(2); /* Not 1, so -q can distinguish error */ 1831 } 1832 1833 /* 1834 * Finish -- 1835 * Called when aborting due to errors in child shell to signal 1836 * abnormal exit. 1837 * 1838 * Results: 1839 * None 1840 * 1841 * Side Effects: 1842 * The program exits 1843 */ 1844 void 1845 Finish(int errors) 1846 /* number of errors encountered in Make_Make */ 1847 { 1848 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1849 } 1850 1851 /* 1852 * enunlink -- 1853 * Remove a file carefully, avoiding directories. 1854 */ 1855 int 1856 eunlink(const char *file) 1857 { 1858 struct stat st; 1859 1860 if (lstat(file, &st) == -1) 1861 return -1; 1862 1863 if (S_ISDIR(st.st_mode)) { 1864 errno = EISDIR; 1865 return -1; 1866 } 1867 return unlink(file); 1868 } 1869 1870 /* 1871 * execError -- 1872 * Print why exec failed, avoiding stdio. 1873 */ 1874 void 1875 execError(const char *af, const char *av) 1876 { 1877 #ifdef USE_IOVEC 1878 int i = 0; 1879 struct iovec iov[8]; 1880 #define IOADD(s) \ 1881 (void)(iov[i].iov_base = UNCONST(s), \ 1882 iov[i].iov_len = strlen(iov[i].iov_base), \ 1883 i++) 1884 #else 1885 #define IOADD(void)write(2, s, strlen(s)) 1886 #endif 1887 1888 IOADD(progname); 1889 IOADD(": "); 1890 IOADD(af); 1891 IOADD("("); 1892 IOADD(av); 1893 IOADD(") failed ("); 1894 IOADD(strerror(errno)); 1895 IOADD(")\n"); 1896 1897 #ifdef USE_IOVEC 1898 (void)writev(2, iov, 8); 1899 #endif 1900 } 1901 1902 /* 1903 * usage -- 1904 * exit with usage message 1905 */ 1906 static void 1907 usage(void) 1908 { 1909 (void)fprintf(stderr, 1910 "usage: %s [-BeikNnqrstWX] \n\ 1911 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1912 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1913 [-V variable] [variable=value] [target ...]\n", progname); 1914 exit(2); 1915 } 1916 1917 1918 int 1919 PrintAddr(void *a, void *b) 1920 { 1921 printf("%lx ", (unsigned long) a); 1922 return b ? 0 : 0; 1923 } 1924 1925 1926 1927 void 1928 PrintOnError(GNode *gn, const char *s) 1929 { 1930 static GNode *en = NULL; 1931 char tmp[64]; 1932 char *cp; 1933 1934 if (s) 1935 printf("%s", s); 1936 1937 printf("\n%s: stopped in %s\n", progname, curdir); 1938 1939 if (en) 1940 return; /* we've been here! */ 1941 if (gn) { 1942 /* 1943 * We can print this even if there is no .ERROR target. 1944 */ 1945 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1946 } 1947 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1948 sizeof(tmp) - 1); 1949 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1950 if (cp) { 1951 if (*cp) 1952 printf("%s", cp); 1953 free(cp); 1954 } 1955 /* 1956 * Finally, see if there is a .ERROR target, and run it if so. 1957 */ 1958 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1959 if (en) { 1960 en->type |= OP_SPECIAL; 1961 Compat_Make(en, en); 1962 } 1963 } 1964 1965 void 1966 Main_ExportMAKEFLAGS(Boolean first) 1967 { 1968 static int once = 1; 1969 char tmp[64]; 1970 char *s; 1971 1972 if (once != first) 1973 return; 1974 once = 0; 1975 1976 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1977 sizeof(tmp)); 1978 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1979 if (s && *s) { 1980 #ifdef POSIX 1981 setenv("MAKEFLAGS", s, 1); 1982 #else 1983 setenv("MAKE", s, 1); 1984 #endif 1985 } 1986 } 1987 1988 char * 1989 getTmpdir(void) 1990 { 1991 static char *tmpdir = NULL; 1992 1993 if (!tmpdir) { 1994 struct stat st; 1995 1996 /* 1997 * Honor $TMPDIR but only if it is valid. 1998 * Ensure it ends with /. 1999 */ 2000 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 2001 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2002 free(tmpdir); 2003 tmpdir = bmake_strdup(_PATH_TMP); 2004 } 2005 } 2006 return tmpdir; 2007 } 2008 2009 /* 2010 * Create and open a temp file using "pattern". 2011 * If "fnamep" is provided set it to a copy of the filename created. 2012 * Otherwise unlink the file once open. 2013 */ 2014 int 2015 mkTempFile(const char *pattern, char **fnamep) 2016 { 2017 static char *tmpdir = NULL; 2018 char tfile[MAXPATHLEN]; 2019 int fd; 2020 2021 if (!pattern) 2022 pattern = TMPPAT; 2023 if (!tmpdir) 2024 tmpdir = getTmpdir(); 2025 if (pattern[0] == '/') { 2026 snprintf(tfile, sizeof(tfile), "%s", pattern); 2027 } else { 2028 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2029 } 2030 if ((fd = mkstemp(tfile)) < 0) 2031 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2032 if (fnamep) { 2033 *fnamep = bmake_strdup(tfile); 2034 } else { 2035 unlink(tfile); /* we just want the descriptor */ 2036 } 2037 return fd; 2038 } 2039 2040 2041 /* 2042 * Return a Boolean based on setting of a knob. 2043 * 2044 * If the knob is not set, the supplied default is the return value. 2045 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2046 * is FALSE, otherwise TRUE. 2047 */ 2048 Boolean 2049 getBoolean(const char *name, Boolean bf) 2050 { 2051 char tmp[64]; 2052 char *cp; 2053 2054 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 2055 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 2056 2057 if (cp) { 2058 switch(*cp) { 2059 case '\0': /* not set - the default wins */ 2060 break; 2061 case '0': 2062 case 'f': 2063 case 'n': 2064 bf = FALSE; 2065 break; 2066 case 'o': 2067 switch (cp[1]) { 2068 case 'f': 2069 bf = FALSE; 2070 break; 2071 default: 2072 bf = TRUE; 2073 break; 2074 } 2075 break; 2076 default: 2077 bf = TRUE; 2078 break; 2079 } 2080 free(cp); 2081 } 2082 } 2083 return (bf); 2084 } 2085
Indexes created Tue Sep 23 14:10:03 GMT 2025