main.c revision 1.220
1 /* $NetBSD: main.c,v 1.220 2013/07/16 14:00:53 christos 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 1.220 2013/07/16 14:00:53 christos 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 1.220 2013/07/16 14:00:53 christos 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/stat.h> 121 #include <sys/utsname.h> 122 #include <sys/wait.h> 123 124 #include <errno.h> 125 #include <fcntl.h> 126 #include <signal.h> 127 #include <stdarg.h> 128 #include <stdio.h> 129 #include <stdlib.h> 130 #include <time.h> 131 #include <ctype.h> 132 133 #include "make.h" 134 #include "hash.h" 135 #include "dir.h" 136 #include "job.h" 137 #include "pathnames.h" 138 #include "trace.h" 139 140 #ifdef USE_IOVEC 141 #include <sys/uio.h> 142 #endif 143 144 #ifndef DEFMAXLOCAL 145 #define DEFMAXLOCAL DEFMAXJOBS 146 #endif /* DEFMAXLOCAL */ 147 148 Lst create; /* Targets to be made */ 149 time_t now; /* Time at start of make */ 150 GNode *DEFAULT; /* .DEFAULT node */ 151 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 152 153 static Boolean noBuiltins; /* -r flag */ 154 static Lst makefiles; /* ordered list of makefiles to read */ 155 static Boolean printVars; /* print value of one or more vars */ 156 static Lst variables; /* list of variables to print */ 157 int maxJobs; /* -j argument */ 158 static int maxJobTokens; /* -j argument */ 159 Boolean compatMake; /* -B argument */ 160 int debug; /* -d argument */ 161 Boolean debugVflag; /* -dV */ 162 Boolean noExecute; /* -n flag */ 163 Boolean noRecursiveExecute; /* -N flag */ 164 Boolean keepgoing; /* -k flag */ 165 Boolean queryFlag; /* -q flag */ 166 Boolean touchFlag; /* -t flag */ 167 Boolean enterFlag; /* -w 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 void MainParseArgs(int, char **); 180 static int ReadMakefile(const void *, const void *); 181 static void usage(void) MAKE_ATTR_DEAD; 182 183 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 184 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 185 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 186 char *progname; /* the program name */ 187 char *makeDependfile; 188 pid_t myPid; 189 int makelevel; 190 191 Boolean forceJobs = FALSE; 192 193 extern Lst parseIncPath; 194 195 /* 196 * For compatibility with the POSIX version of MAKEFLAGS that includes 197 * all the options with out -, convert flags to -f -l -a -g -s. 198 */ 199 static char * 200 explode(const char *flags) 201 { 202 size_t len; 203 char *nf, *st; 204 const char *f; 205 206 if (flags == NULL) 207 return NULL; 208 209 for (f = flags; *f; f++) 210 if (!isalpha((unsigned char)*f)) 211 break; 212 213 if (*f) 214 return estrdup(flags); 215 216 len = strlen(flags); 217 st = nf = emalloc(len * 3 + 1); 218 while (*flags) { 219 *nf++ = '-'; 220 *nf++ = *flags++; 221 *nf++ = ' '; 222 } 223 *nf = '\0'; 224 return st; 225 } 226 227 static void 228 parse_debug_options(const char *argvalue) 229 { 230 const char *modules; 231 const char *mode; 232 char *fname; 233 int len; 234 235 for (modules = argvalue; *modules; ++modules) { 236 switch (*modules) { 237 case 'A': 238 debug = ~0; 239 break; 240 case 'a': 241 debug |= DEBUG_ARCH; 242 break; 243 case 'C': 244 debug |= DEBUG_CWD; 245 break; 246 case 'c': 247 debug |= DEBUG_COND; 248 break; 249 case 'd': 250 debug |= DEBUG_DIR; 251 break; 252 case 'e': 253 debug |= DEBUG_ERROR; 254 break; 255 case 'f': 256 debug |= DEBUG_FOR; 257 break; 258 case 'g': 259 if (modules[1] == '1') { 260 debug |= DEBUG_GRAPH1; 261 ++modules; 262 } 263 else if (modules[1] == '2') { 264 debug |= DEBUG_GRAPH2; 265 ++modules; 266 } 267 else if (modules[1] == '3') { 268 debug |= DEBUG_GRAPH3; 269 ++modules; 270 } 271 break; 272 case 'j': 273 debug |= DEBUG_JOB; 274 break; 275 case 'l': 276 debug |= DEBUG_LOUD; 277 break; 278 case 'M': 279 debug |= DEBUG_META; 280 break; 281 case 'm': 282 debug |= DEBUG_MAKE; 283 break; 284 case 'n': 285 debug |= DEBUG_SCRIPT; 286 break; 287 case 'p': 288 debug |= DEBUG_PARSE; 289 break; 290 case 's': 291 debug |= DEBUG_SUFF; 292 break; 293 case 't': 294 debug |= DEBUG_TARG; 295 break; 296 case 'V': 297 debugVflag = TRUE; 298 break; 299 case 'v': 300 debug |= DEBUG_VAR; 301 break; 302 case 'x': 303 debug |= DEBUG_SHELL; 304 break; 305 case 'F': 306 if (debug_file != stdout && debug_file != stderr) 307 fclose(debug_file); 308 if (*++modules == '+') { 309 modules++; 310 mode = "a"; 311 } else 312 mode = "w"; 313 if (strcmp(modules, "stdout") == 0) { 314 debug_file = stdout; 315 goto debug_setbuf; 316 } 317 if (strcmp(modules, "stderr") == 0) { 318 debug_file = stderr; 319 goto debug_setbuf; 320 } 321 len = strlen(modules); 322 fname = malloc(len + 20); 323 memcpy(fname, modules, len + 1); 324 /* Let the filename be modified by the pid */ 325 if (strcmp(fname + len - 3, ".%d") == 0) 326 snprintf(fname + len - 2, 20, "%d", getpid()); 327 debug_file = fopen(fname, mode); 328 if (!debug_file) { 329 fprintf(stderr, "Cannot open debug file %s\n", 330 fname); 331 usage(); 332 } 333 free(fname); 334 goto debug_setbuf; 335 default: 336 (void)fprintf(stderr, 337 "%s: illegal argument to d option -- %c\n", 338 progname, *modules); 339 usage(); 340 } 341 } 342 debug_setbuf: 343 /* 344 * Make the debug_file unbuffered, and make 345 * stdout line buffered (unless debugfile == stdout). 346 */ 347 setvbuf(debug_file, NULL, _IONBF, 0); 348 if (debug_file != stdout) { 349 setvbuf(stdout, NULL, _IOLBF, 0); 350 } 351 } 352 353 /*- 354 * MainParseArgs -- 355 * Parse a given argument vector. Called from main() and from 356 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 357 * 358 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 359 * 360 * Results: 361 * None 362 * 363 * Side Effects: 364 * Various global and local flags will be set depending on the flags 365 * given 366 */ 367 static void 368 MainParseArgs(int argc, char **argv) 369 { 370 char *p; 371 int c = '?'; 372 int arginc; 373 char *argvalue; 374 const char *getopt_def; 375 char *optscan; 376 Boolean inOption, dashDash = FALSE; 377 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 378 379 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 380 /* Can't actually use getopt(3) because rescanning is not portable */ 381 382 getopt_def = OPTFLAGS; 383 rearg: 384 inOption = FALSE; 385 optscan = NULL; 386 while(argc > 1) { 387 char *getopt_spec; 388 if(!inOption) 389 optscan = argv[1]; 390 c = *optscan++; 391 arginc = 0; 392 if(inOption) { 393 if(c == '\0') { 394 ++argv; 395 --argc; 396 inOption = FALSE; 397 continue; 398 } 399 } else { 400 if (c != '-' || dashDash) 401 break; 402 inOption = TRUE; 403 c = *optscan++; 404 } 405 /* '-' found at some earlier point */ 406 getopt_spec = strchr(getopt_def, c); 407 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 408 /* -<something> found, and <something> should have an arg */ 409 inOption = FALSE; 410 arginc = 1; 411 argvalue = optscan; 412 if(*argvalue == '\0') { 413 if (argc < 3) 414 goto noarg; 415 argvalue = argv[2]; 416 arginc = 2; 417 } 418 } else { 419 argvalue = NULL; 420 } 421 switch(c) { 422 case '\0': 423 arginc = 1; 424 inOption = FALSE; 425 break; 426 case 'B': 427 compatMake = TRUE; 428 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 429 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 430 break; 431 case 'C': 432 if (chdir(argvalue) == -1) { 433 (void)fprintf(stderr, 434 "%s: chdir %s: %s\n", 435 progname, argvalue, 436 strerror(errno)); 437 exit(1); 438 } 439 if (getcwd(curdir, MAXPATHLEN) == NULL) { 440 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 441 exit(2); 442 } 443 ignorePWD = TRUE; 444 break; 445 case 'D': 446 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 447 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 448 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 449 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 450 break; 451 case 'I': 452 if (argvalue == NULL) goto noarg; 453 Parse_AddIncludeDir(argvalue); 454 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 455 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 456 break; 457 case 'J': 458 if (argvalue == NULL) goto noarg; 459 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 460 (void)fprintf(stderr, 461 "%s: internal error -- J option malformed (%s)\n", 462 progname, argvalue); 463 usage(); 464 } 465 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 466 (fcntl(jp_1, F_GETFD, 0) < 0)) { 467 #if 0 468 (void)fprintf(stderr, 469 "%s: ###### warning -- J descriptors were closed!\n", 470 progname); 471 exit(2); 472 #endif 473 jp_0 = -1; 474 jp_1 = -1; 475 compatMake = TRUE; 476 } else { 477 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 478 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 479 jobServer = TRUE; 480 } 481 break; 482 case 'N': 483 noExecute = TRUE; 484 noRecursiveExecute = TRUE; 485 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 486 break; 487 case 'S': 488 keepgoing = FALSE; 489 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 490 break; 491 case 'T': 492 if (argvalue == NULL) goto noarg; 493 tracefile = bmake_strdup(argvalue); 494 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 495 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 496 break; 497 case 'V': 498 if (argvalue == NULL) goto noarg; 499 printVars = TRUE; 500 (void)Lst_AtEnd(variables, argvalue); 501 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 502 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 503 break; 504 case 'W': 505 parseWarnFatal = TRUE; 506 break; 507 case 'X': 508 varNoExportEnv = TRUE; 509 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 510 break; 511 case 'd': 512 if (argvalue == NULL) goto noarg; 513 /* If '-d-opts' don't pass to children */ 514 if (argvalue[0] == '-') 515 argvalue++; 516 else { 517 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 518 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 519 } 520 parse_debug_options(argvalue); 521 break; 522 case 'e': 523 checkEnvFirst = TRUE; 524 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 525 break; 526 case 'f': 527 if (argvalue == NULL) goto noarg; 528 (void)Lst_AtEnd(makefiles, argvalue); 529 break; 530 case 'i': 531 ignoreErrors = TRUE; 532 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 533 break; 534 case 'j': 535 if (argvalue == NULL) goto noarg; 536 forceJobs = TRUE; 537 maxJobs = strtol(argvalue, &p, 0); 538 if (*p != '\0' || maxJobs < 1) { 539 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 540 progname); 541 exit(1); 542 } 543 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 544 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 545 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 546 maxJobTokens = maxJobs; 547 break; 548 case 'k': 549 keepgoing = TRUE; 550 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 551 break; 552 case 'm': 553 if (argvalue == NULL) goto noarg; 554 /* look for magic parent directory search string */ 555 if (strncmp(".../", argvalue, 4) == 0) { 556 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 557 found_path, sizeof(found_path))) 558 break; /* nothing doing */ 559 (void)Dir_AddDir(sysIncPath, found_path); 560 } else { 561 (void)Dir_AddDir(sysIncPath, argvalue); 562 } 563 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 564 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 565 break; 566 case 'n': 567 noExecute = TRUE; 568 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 569 break; 570 case 'q': 571 queryFlag = TRUE; 572 /* Kind of nonsensical, wot? */ 573 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 574 break; 575 case 'r': 576 noBuiltins = TRUE; 577 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 578 break; 579 case 's': 580 beSilent = TRUE; 581 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 582 break; 583 case 't': 584 touchFlag = TRUE; 585 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 586 break; 587 case 'w': 588 enterFlag = TRUE; 589 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 590 break; 591 case '-': 592 dashDash = TRUE; 593 break; 594 default: 595 case '?': 596 usage(); 597 } 598 argv += arginc; 599 argc -= arginc; 600 } 601 602 oldVars = TRUE; 603 604 /* 605 * See if the rest of the arguments are variable assignments and 606 * perform them if so. Else take them to be targets and stuff them 607 * on the end of the "create" list. 608 */ 609 for (; argc > 1; ++argv, --argc) 610 if (Parse_IsVar(argv[1])) { 611 Parse_DoVar(argv[1], VAR_CMD); 612 } else { 613 if (!*argv[1]) 614 Punt("illegal (null) argument."); 615 if (*argv[1] == '-' && !dashDash) 616 goto rearg; 617 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 618 } 619 620 return; 621 noarg: 622 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 623 progname, c); 624 usage(); 625 } 626 627 /*- 628 * Main_ParseArgLine -- 629 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 630 * is encountered and by main() when reading the .MAKEFLAGS envariable. 631 * Takes a line of arguments and breaks it into its 632 * component words and passes those words and the number of them to the 633 * MainParseArgs function. 634 * The line should have all its leading whitespace removed. 635 * 636 * Input: 637 * line Line to fracture 638 * 639 * Results: 640 * None 641 * 642 * Side Effects: 643 * Only those that come from the various arguments. 644 */ 645 void 646 Main_ParseArgLine(const char *line) 647 { 648 char **argv; /* Manufactured argument vector */ 649 int argc; /* Number of arguments in argv */ 650 char *args; /* Space used by the args */ 651 char *buf, *p1; 652 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 653 size_t len; 654 655 if (line == NULL) 656 return; 657 for (; *line == ' '; ++line) 658 continue; 659 if (!*line) 660 return; 661 662 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 663 (void)snprintf(buf, len, "%s %s", argv0, line); 664 if (p1) 665 free(p1); 666 667 argv = brk_string(buf, &argc, TRUE, &args); 668 if (argv == NULL) { 669 Error("Unterminated quoted string [%s]", buf); 670 free(buf); 671 return; 672 } 673 free(buf); 674 MainParseArgs(argc, argv); 675 676 free(args); 677 free(argv); 678 } 679 680 Boolean 681 Main_SetObjdir(const char *path) 682 { 683 struct stat sb; 684 char *p = NULL; 685 char buf[MAXPATHLEN + 1]; 686 Boolean rc = FALSE; 687 688 /* expand variable substitutions */ 689 if (strchr(path, '$') != 0) { 690 snprintf(buf, MAXPATHLEN, "%s", path); 691 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 692 } 693 694 if (path[0] != '/') { 695 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 696 path = buf; 697 } 698 699 /* look for the directory and try to chdir there */ 700 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 701 if (chdir(path)) { 702 (void)fprintf(stderr, "make warning: %s: %s.\n", 703 path, strerror(errno)); 704 } else { 705 strncpy(objdir, path, MAXPATHLEN); 706 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 707 setenv("PWD", objdir, 1); 708 Dir_InitDot(); 709 rc = TRUE; 710 } 711 } 712 713 if (p) 714 free(p); 715 return rc; 716 } 717 718 /*- 719 * ReadAllMakefiles -- 720 * wrapper around ReadMakefile() to read all. 721 * 722 * Results: 723 * TRUE if ok, FALSE on error 724 */ 725 static int 726 ReadAllMakefiles(const void *p, const void *q) 727 { 728 return (ReadMakefile(p, q) == 0); 729 } 730 731 int 732 str2Lst_Append(Lst lp, char *str, const char *sep) 733 { 734 char *cp; 735 int n; 736 737 if (!sep) 738 sep = " \t"; 739 740 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 741 (void)Lst_AtEnd(lp, cp); 742 n++; 743 } 744 return (n); 745 } 746 747 #ifdef SIGINFO 748 /*ARGSUSED*/ 749 static void 750 siginfo(int signo MAKE_ATTR_UNUSED) 751 { 752 char dir[MAXPATHLEN]; 753 char str[2 * MAXPATHLEN]; 754 int len; 755 if (getcwd(dir, sizeof(dir)) == NULL) 756 return; 757 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 758 if (len > 0) 759 (void)write(STDERR_FILENO, str, (size_t)len); 760 } 761 #endif 762 763 /* 764 * Allow makefiles some control over the mode we run in. 765 */ 766 void 767 MakeMode(const char *mode) 768 { 769 char *mp = NULL; 770 771 if (!mode) 772 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 773 774 if (mode && *mode) { 775 if (strstr(mode, "compat")) { 776 compatMake = TRUE; 777 forceJobs = FALSE; 778 } 779 #if USE_META 780 if (strstr(mode, "meta")) 781 meta_mode_init(mode); 782 #endif 783 } 784 if (mp) 785 free(mp); 786 } 787 788 /*- 789 * main -- 790 * The main function, for obvious reasons. Initializes variables 791 * and a few modules, then parses the arguments give it in the 792 * environment and on the command line. Reads the system makefile 793 * followed by either Makefile, makefile or the file given by the 794 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 795 * flags it has received by then uses either the Make or the Compat 796 * module to create the initial list of targets. 797 * 798 * Results: 799 * If -q was given, exits -1 if anything was out-of-date. Else it exits 800 * 0. 801 * 802 * Side Effects: 803 * The program exits when done. Targets are created. etc. etc. etc. 804 */ 805 int 806 main(int argc, char **argv) 807 { 808 Lst targs; /* target nodes to create -- passed to Make_Init */ 809 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 810 struct stat sb, sa; 811 char *p1, *path, *pwd; 812 char mdpath[MAXPATHLEN]; 813 const char *machine = getenv("MACHINE"); 814 const char *machine_arch = getenv("MACHINE_ARCH"); 815 char *syspath = getenv("MAKESYSPATH"); 816 Lst sysMkPath; /* Path of sys.mk */ 817 char *cp = NULL, *start; 818 /* avoid faults on read-only strings */ 819 static char defsyspath[] = _PATH_DEFSYSPATH; 820 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 821 struct timeval rightnow; /* to initialize random seed */ 822 struct utsname utsname; 823 824 /* default to writing debug to stderr */ 825 debug_file = stderr; 826 827 #ifdef SIGINFO 828 (void)bmake_signal(SIGINFO, siginfo); 829 #endif 830 /* 831 * Set the seed to produce a different random sequence 832 * on each program execution. 833 */ 834 gettimeofday(&rightnow, NULL); 835 srandom(rightnow.tv_sec + rightnow.tv_usec); 836 837 if ((progname = strrchr(argv[0], '/')) != NULL) 838 progname++; 839 else 840 progname = argv[0]; 841 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 842 /* 843 * get rid of resource limit on file descriptors 844 */ 845 { 846 struct rlimit rl; 847 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 848 rl.rlim_cur != rl.rlim_max) { 849 rl.rlim_cur = rl.rlim_max; 850 (void)setrlimit(RLIMIT_NOFILE, &rl); 851 } 852 } 853 #endif 854 855 if (uname(&utsname) == -1) { 856 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 857 strerror(errno)); 858 exit(2); 859 } 860 861 /* 862 * Get the name of this type of MACHINE from utsname 863 * so we can share an executable for similar machines. 864 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 865 * 866 * Note that both MACHINE and MACHINE_ARCH are decided at 867 * run-time. 868 */ 869 if (!machine) { 870 #ifdef MAKE_NATIVE 871 machine = utsname.machine; 872 #else 873 #ifdef MAKE_MACHINE 874 machine = MAKE_MACHINE; 875 #else 876 machine = "unknown"; 877 #endif 878 #endif 879 } 880 881 if (!machine_arch) { 882 #ifndef MACHINE_ARCH 883 #ifdef MAKE_MACHINE_ARCH 884 machine_arch = MAKE_MACHINE_ARCH; 885 #else 886 machine_arch = "unknown"; 887 #endif 888 #else 889 machine_arch = MACHINE_ARCH; 890 #endif 891 } 892 893 myPid = getpid(); /* remember this for vFork() */ 894 895 /* 896 * Just in case MAKEOBJDIR wants us to do something tricky. 897 */ 898 Var_Init(); /* Initialize the lists of variables for 899 * parsing arguments */ 900 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 901 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 902 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 903 #ifdef MAKE_VERSION 904 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 905 #endif 906 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 907 /* 908 * This is the traditional preference for makefiles. 909 */ 910 #ifndef MAKEFILE_PREFERENCE_LIST 911 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 912 #endif 913 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 914 VAR_GLOBAL, 0); 915 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 916 917 create = Lst_Init(FALSE); 918 makefiles = Lst_Init(FALSE); 919 printVars = FALSE; 920 debugVflag = FALSE; 921 variables = Lst_Init(FALSE); 922 beSilent = FALSE; /* Print commands as executed */ 923 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 924 noExecute = FALSE; /* Execute all commands */ 925 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 926 keepgoing = FALSE; /* Stop on error */ 927 allPrecious = FALSE; /* Remove targets when interrupted */ 928 queryFlag = FALSE; /* This is not just a check-run */ 929 noBuiltins = FALSE; /* Read the built-in rules */ 930 touchFlag = FALSE; /* Actually update targets */ 931 debug = 0; /* No debug verbosity, please. */ 932 jobsRunning = FALSE; 933 934 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 935 maxJobTokens = maxJobs; 936 compatMake = FALSE; /* No compat mode */ 937 ignorePWD = FALSE; 938 939 /* 940 * Initialize the parsing, directory and variable modules to prepare 941 * for the reading of inclusion paths and variable settings on the 942 * command line 943 */ 944 945 /* 946 * Initialize various variables. 947 * MAKE also gets this name, for compatibility 948 * .MAKEFLAGS gets set to the empty string just in case. 949 * MFLAGS also gets initialized empty, for compatibility. 950 */ 951 Parse_Init(); 952 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 953 /* 954 * Leave alone if it is an absolute path, or if it does 955 * not contain a '/' in which case we need to find it in 956 * the path, like execvp(3) and the shells do. 957 */ 958 p1 = argv[0]; 959 } else { 960 /* 961 * A relative path, canonicalize it. 962 */ 963 p1 = realpath(argv[0], mdpath); 964 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 965 p1 = argv[0]; /* realpath failed */ 966 } 967 } 968 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 969 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 970 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 971 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 972 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 973 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 974 /* some makefiles need to know this */ 975 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 976 977 /* 978 * Set some other useful macros 979 */ 980 { 981 char tmp[64], *ep; 982 983 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 984 if (makelevel < 0) 985 makelevel = 0; 986 snprintf(tmp, sizeof(tmp), "%d", makelevel); 987 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 988 snprintf(tmp, sizeof(tmp), "%u", myPid); 989 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 990 snprintf(tmp, sizeof(tmp), "%u", getppid()); 991 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 992 } 993 if (makelevel > 0) { 994 char pn[1024]; 995 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 996 progname = estrdup(pn); 997 } 998 Job_SetPrefix(); 999 1000 #ifdef USE_META 1001 meta_init(); 1002 #endif 1003 /* 1004 * First snag any flags out of the MAKE environment variable. 1005 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1006 * in a different format). 1007 */ 1008 #ifdef POSIX 1009 p1 = explode(getenv("MAKEFLAGS")); 1010 Main_ParseArgLine(p1); 1011 free(p1); 1012 #else 1013 Main_ParseArgLine(getenv("MAKE")); 1014 #endif 1015 1016 /* 1017 * Find where we are (now). 1018 * We take care of PWD for the automounter below... 1019 */ 1020 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1021 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1022 progname, strerror(errno)); 1023 exit(2); 1024 } 1025 1026 MainParseArgs(argc, argv); 1027 1028 if (enterFlag) 1029 printf("%s: Entering directory `%s'\n", progname, curdir); 1030 1031 /* 1032 * Verify that cwd is sane. 1033 */ 1034 if (stat(curdir, &sa) == -1) { 1035 (void)fprintf(stderr, "%s: %s: %s.\n", 1036 progname, curdir, strerror(errno)); 1037 exit(2); 1038 } 1039 1040 /* 1041 * All this code is so that we know where we are when we start up 1042 * on a different machine with pmake. 1043 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1044 * since the value of curdir can vary depending on how we got 1045 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1046 * or via subdir.mk in which case its likely a shell which does 1047 * not provide it. 1048 * So, to stop it breaking this case only, we ignore PWD if 1049 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1050 */ 1051 if (!ignorePWD && 1052 (pwd = getenv("PWD")) != NULL && 1053 getenv("MAKEOBJDIRPREFIX") == NULL) { 1054 const char *makeobjdir = getenv("MAKEOBJDIR"); 1055 1056 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1057 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 1058 sa.st_dev == sb.st_dev) 1059 (void)strncpy(curdir, pwd, MAXPATHLEN); 1060 } 1061 } 1062 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1063 1064 /* 1065 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1066 * MAKEOBJDIR is set in the environment, try only that value 1067 * and fall back to .CURDIR if it does not exist. 1068 * 1069 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1070 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1071 * of these paths exist, just use .CURDIR. 1072 */ 1073 Dir_Init(curdir); 1074 (void)Main_SetObjdir(curdir); 1075 1076 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1077 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1078 (void)Main_SetObjdir(mdpath); 1079 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1080 (void)Main_SetObjdir(path); 1081 } else { 1082 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1083 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1084 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1085 _PATH_OBJDIRPREFIX, curdir); 1086 (void)Main_SetObjdir(mdpath); 1087 } 1088 } 1089 1090 /* 1091 * Be compatible if user did not specify -j and did not explicitly 1092 * turned compatibility on 1093 */ 1094 if (!compatMake && !forceJobs) { 1095 compatMake = TRUE; 1096 } 1097 1098 /* 1099 * Initialize archive, target and suffix modules in preparation for 1100 * parsing the makefile(s) 1101 */ 1102 Arch_Init(); 1103 Targ_Init(); 1104 Suff_Init(); 1105 Trace_Init(tracefile); 1106 1107 DEFAULT = NULL; 1108 (void)time(&now); 1109 1110 Trace_Log(MAKESTART, NULL); 1111 1112 /* 1113 * Set up the .TARGETS variable to contain the list of targets to be 1114 * created. If none specified, make the variable empty -- the parser 1115 * will fill the thing in with the default or .MAIN target. 1116 */ 1117 if (!Lst_IsEmpty(create)) { 1118 LstNode ln; 1119 1120 for (ln = Lst_First(create); ln != NULL; 1121 ln = Lst_Succ(ln)) { 1122 char *name = (char *)Lst_Datum(ln); 1123 1124 Var_Append(".TARGETS", name, VAR_GLOBAL); 1125 } 1126 } else 1127 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1128 1129 1130 /* 1131 * If no user-supplied system path was given (through the -m option) 1132 * add the directories from the DEFSYSPATH (more than one may be given 1133 * as dir1:...:dirn) to the system include path. 1134 */ 1135 if (syspath == NULL || *syspath == '\0') 1136 syspath = defsyspath; 1137 else 1138 syspath = bmake_strdup(syspath); 1139 1140 for (start = syspath; *start != '\0'; start = cp) { 1141 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1142 continue; 1143 if (*cp == ':') { 1144 *cp++ = '\0'; 1145 } 1146 /* look for magic parent directory search string */ 1147 if (strncmp(".../", start, 4) != 0) { 1148 (void)Dir_AddDir(defIncPath, start); 1149 } else { 1150 if (Dir_FindHereOrAbove(curdir, start+4, 1151 found_path, sizeof(found_path))) { 1152 (void)Dir_AddDir(defIncPath, found_path); 1153 } 1154 } 1155 } 1156 if (syspath != defsyspath) 1157 free(syspath); 1158 1159 /* 1160 * Read in the built-in rules first, followed by the specified 1161 * makefile, if it was (makefile != NULL), or the default 1162 * makefile and Makefile, in that order, if it wasn't. 1163 */ 1164 if (!noBuiltins) { 1165 LstNode ln; 1166 1167 sysMkPath = Lst_Init(FALSE); 1168 Dir_Expand(_PATH_DEFSYSMK, 1169 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1170 sysMkPath); 1171 if (Lst_IsEmpty(sysMkPath)) 1172 Fatal("%s: no system rules (%s).", progname, 1173 _PATH_DEFSYSMK); 1174 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1175 if (ln == NULL) 1176 Fatal("%s: cannot open %s.", progname, 1177 (char *)Lst_Datum(ln)); 1178 } 1179 1180 if (!Lst_IsEmpty(makefiles)) { 1181 LstNode ln; 1182 1183 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1184 if (ln != NULL) 1185 Fatal("%s: cannot open %s.", progname, 1186 (char *)Lst_Datum(ln)); 1187 } else { 1188 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1189 VAR_CMD, 0); 1190 if (p1) { 1191 (void)str2Lst_Append(makefiles, p1, NULL); 1192 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1193 free(p1); 1194 } 1195 } 1196 1197 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1198 if (!noBuiltins || !printVars) { 1199 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1200 VAR_CMD, 0); 1201 doing_depend = TRUE; 1202 (void)ReadMakefile(makeDependfile, NULL); 1203 doing_depend = FALSE; 1204 } 1205 1206 MakeMode(NULL); 1207 1208 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1209 if (p1) 1210 free(p1); 1211 1212 if (!compatMake) 1213 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1214 if (DEBUG(JOB)) 1215 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1216 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1217 1218 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1219 1220 1221 /* 1222 * For compatibility, look at the directories in the VPATH variable 1223 * and add them to the search path, if the variable is defined. The 1224 * variable's value is in the same format as the PATH envariable, i.e. 1225 * <directory>:<directory>:<directory>... 1226 */ 1227 if (Var_Exists("VPATH", VAR_CMD)) { 1228 char *vpath, savec; 1229 /* 1230 * GCC stores string constants in read-only memory, but 1231 * Var_Subst will want to write this thing, so store it 1232 * in an array 1233 */ 1234 static char VPATH[] = "${VPATH}"; 1235 1236 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1237 path = vpath; 1238 do { 1239 /* skip to end of directory */ 1240 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1241 continue; 1242 /* Save terminator character so know when to stop */ 1243 savec = *cp; 1244 *cp = '\0'; 1245 /* Add directory to search path */ 1246 (void)Dir_AddDir(dirSearchPath, path); 1247 *cp = savec; 1248 path = cp + 1; 1249 } while (savec == ':'); 1250 free(vpath); 1251 } 1252 1253 /* 1254 * Now that all search paths have been read for suffixes et al, it's 1255 * time to add the default search path to their lists... 1256 */ 1257 Suff_DoPaths(); 1258 1259 /* 1260 * Propagate attributes through :: dependency lists. 1261 */ 1262 Targ_Propagate(); 1263 1264 /* print the initial graph, if the user requested it */ 1265 if (DEBUG(GRAPH1)) 1266 Targ_PrintGraph(1); 1267 1268 /* print the values of any variables requested by the user */ 1269 if (printVars) { 1270 LstNode ln; 1271 Boolean expandVars; 1272 1273 if (debugVflag) 1274 expandVars = FALSE; 1275 else 1276 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1277 for (ln = Lst_First(variables); ln != NULL; 1278 ln = Lst_Succ(ln)) { 1279 char *var = (char *)Lst_Datum(ln); 1280 char *value; 1281 1282 if (strchr(var, '$')) { 1283 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1284 } else if (expandVars) { 1285 char tmp[128]; 1286 1287 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1288 Fatal("%s: variable name too big: %s", 1289 progname, var); 1290 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1291 } else { 1292 value = Var_Value(var, VAR_GLOBAL, &p1); 1293 } 1294 printf("%s\n", value ? value : ""); 1295 if (p1) 1296 free(p1); 1297 } 1298 } else { 1299 /* 1300 * Have now read the entire graph and need to make a list of 1301 * targets to create. If none was given on the command line, 1302 * we consult the parsing module to find the main target(s) 1303 * to create. 1304 */ 1305 if (Lst_IsEmpty(create)) 1306 targs = Parse_MainName(); 1307 else 1308 targs = Targ_FindList(create, TARG_CREATE); 1309 1310 if (!compatMake) { 1311 /* 1312 * Initialize job module before traversing the graph 1313 * now that any .BEGIN and .END targets have been read. 1314 * This is done only if the -q flag wasn't given 1315 * (to prevent the .BEGIN from being executed should 1316 * it exist). 1317 */ 1318 if (!queryFlag) { 1319 Job_Init(); 1320 jobsRunning = TRUE; 1321 } 1322 1323 /* Traverse the graph, checking on all the targets */ 1324 outOfDate = Make_Run(targs); 1325 } else { 1326 /* 1327 * Compat_Init will take care of creating all the 1328 * targets as well as initializing the module. 1329 */ 1330 Compat_Run(targs); 1331 } 1332 } 1333 1334 #ifdef CLEANUP 1335 Lst_Destroy(targs, NULL); 1336 Lst_Destroy(variables, NULL); 1337 Lst_Destroy(makefiles, NULL); 1338 Lst_Destroy(create, (FreeProc *)free); 1339 #endif 1340 1341 /* print the graph now it's been processed if the user requested it */ 1342 if (DEBUG(GRAPH2)) 1343 Targ_PrintGraph(2); 1344 1345 Trace_Log(MAKEEND, 0); 1346 1347 if (enterFlag) 1348 printf("%s: Leaving directory `%s'\n", progname, curdir); 1349 1350 Suff_End(); 1351 Targ_End(); 1352 Arch_End(); 1353 Var_End(); 1354 Parse_End(); 1355 Dir_End(); 1356 Job_End(); 1357 Trace_End(); 1358 1359 return outOfDate ? 1 : 0; 1360 } 1361 1362 /*- 1363 * ReadMakefile -- 1364 * Open and parse the given makefile. 1365 * 1366 * Results: 1367 * 0 if ok. -1 if couldn't open file. 1368 * 1369 * Side Effects: 1370 * lots 1371 */ 1372 static int 1373 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1374 { 1375 const char *fname = p; /* makefile to read */ 1376 int fd; 1377 size_t len = MAXPATHLEN; 1378 char *name, *path = bmake_malloc(len); 1379 1380 if (!strcmp(fname, "-")) { 1381 Parse_File(NULL /*stdin*/, -1); 1382 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1383 } else { 1384 /* if we've chdir'd, rebuild the path name */ 1385 if (strcmp(curdir, objdir) && *fname != '/') { 1386 size_t plen = strlen(curdir) + strlen(fname) + 2; 1387 if (len < plen) 1388 path = bmake_realloc(path, len = 2 * plen); 1389 1390 (void)snprintf(path, len, "%s/%s", curdir, fname); 1391 fd = open(path, O_RDONLY); 1392 if (fd != -1) { 1393 fname = path; 1394 goto found; 1395 } 1396 1397 /* If curdir failed, try objdir (ala .depend) */ 1398 plen = strlen(objdir) + strlen(fname) + 2; 1399 if (len < plen) 1400 path = bmake_realloc(path, len = 2 * plen); 1401 (void)snprintf(path, len, "%s/%s", objdir, fname); 1402 fd = open(path, O_RDONLY); 1403 if (fd != -1) { 1404 fname = path; 1405 goto found; 1406 } 1407 } else { 1408 fd = open(fname, O_RDONLY); 1409 if (fd != -1) 1410 goto found; 1411 } 1412 /* look in -I and system include directories. */ 1413 name = Dir_FindFile(fname, parseIncPath); 1414 if (!name) 1415 name = Dir_FindFile(fname, 1416 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1417 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1418 if (name) 1419 free(name); 1420 free(path); 1421 return(-1); 1422 } 1423 fname = name; 1424 /* 1425 * set the MAKEFILE variable desired by System V fans -- the 1426 * placement of the setting here means it gets set to the last 1427 * makefile specified, as it is set by SysV make. 1428 */ 1429 found: 1430 if (!doing_depend) 1431 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1432 Parse_File(fname, fd); 1433 } 1434 free(path); 1435 return(0); 1436 } 1437 1438 1439 1440 /*- 1441 * Cmd_Exec -- 1442 * Execute the command in cmd, and return the output of that command 1443 * in a string. 1444 * 1445 * Results: 1446 * A string containing the output of the command, or the empty string 1447 * If errnum is not NULL, it contains the reason for the command failure 1448 * 1449 * Side Effects: 1450 * The string must be freed by the caller. 1451 */ 1452 char * 1453 Cmd_Exec(const char *cmd, const char **errnum) 1454 { 1455 const char *args[4]; /* Args for invoking the shell */ 1456 int fds[2]; /* Pipe streams */ 1457 int cpid; /* Child PID */ 1458 int pid; /* PID from wait() */ 1459 char *res; /* result */ 1460 int status; /* command exit status */ 1461 Buffer buf; /* buffer to store the result */ 1462 char *cp; 1463 int cc; 1464 1465 1466 *errnum = NULL; 1467 1468 if (!shellName) 1469 Shell_Init(); 1470 /* 1471 * Set up arguments for shell 1472 */ 1473 args[0] = shellName; 1474 args[1] = "-c"; 1475 args[2] = cmd; 1476 args[3] = NULL; 1477 1478 /* 1479 * Open a pipe for fetching its output 1480 */ 1481 if (pipe(fds) == -1) { 1482 *errnum = "Couldn't create pipe for \"%s\""; 1483 goto bad; 1484 } 1485 1486 /* 1487 * Fork 1488 */ 1489 switch (cpid = vFork()) { 1490 case 0: 1491 /* 1492 * Close input side of pipe 1493 */ 1494 (void)close(fds[0]); 1495 1496 /* 1497 * Duplicate the output stream to the shell's output, then 1498 * shut the extra thing down. Note we don't fetch the error 1499 * stream...why not? Why? 1500 */ 1501 (void)dup2(fds[1], 1); 1502 (void)close(fds[1]); 1503 1504 Var_ExportVars(); 1505 1506 (void)execv(shellPath, UNCONST(args)); 1507 _exit(1); 1508 /*NOTREACHED*/ 1509 1510 case -1: 1511 *errnum = "Couldn't exec \"%s\""; 1512 goto bad; 1513 1514 default: 1515 /* 1516 * No need for the writing half 1517 */ 1518 (void)close(fds[1]); 1519 1520 Buf_Init(&buf, 0); 1521 1522 do { 1523 char result[BUFSIZ]; 1524 cc = read(fds[0], result, sizeof(result)); 1525 if (cc > 0) 1526 Buf_AddBytes(&buf, cc, result); 1527 } 1528 while (cc > 0 || (cc == -1 && errno == EINTR)); 1529 1530 /* 1531 * Close the input side of the pipe. 1532 */ 1533 (void)close(fds[0]); 1534 1535 /* 1536 * Wait for the process to exit. 1537 */ 1538 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1539 JobReapChild(pid, status, FALSE); 1540 continue; 1541 } 1542 cc = Buf_Size(&buf); 1543 res = Buf_Destroy(&buf, FALSE); 1544 1545 if (cc == 0) 1546 *errnum = "Couldn't read shell's output for \"%s\""; 1547 1548 if (WIFSIGNALED(status)) 1549 *errnum = "\"%s\" exited on a signal"; 1550 else if (WEXITSTATUS(status) != 0) 1551 *errnum = "\"%s\" returned non-zero status"; 1552 1553 /* 1554 * Null-terminate the result, convert newlines to spaces and 1555 * install it in the variable. 1556 */ 1557 res[cc] = '\0'; 1558 cp = &res[cc]; 1559 1560 if (cc > 0 && *--cp == '\n') { 1561 /* 1562 * A final newline is just stripped 1563 */ 1564 *cp-- = '\0'; 1565 } 1566 while (cp >= res) { 1567 if (*cp == '\n') { 1568 *cp = ' '; 1569 } 1570 cp--; 1571 } 1572 break; 1573 } 1574 return res; 1575 bad: 1576 res = bmake_malloc(1); 1577 *res = '\0'; 1578 return res; 1579 } 1580 1581 /*- 1582 * Error -- 1583 * Print an error message given its format. 1584 * 1585 * Results: 1586 * None. 1587 * 1588 * Side Effects: 1589 * The message is printed. 1590 */ 1591 /* VARARGS */ 1592 void 1593 Error(const char *fmt, ...) 1594 { 1595 va_list ap; 1596 FILE *err_file; 1597 1598 err_file = debug_file; 1599 if (err_file == stdout) 1600 err_file = stderr; 1601 (void)fflush(stdout); 1602 for (;;) { 1603 va_start(ap, fmt); 1604 fprintf(err_file, "%s: ", progname); 1605 (void)vfprintf(err_file, fmt, ap); 1606 va_end(ap); 1607 (void)fprintf(err_file, "\n"); 1608 (void)fflush(err_file); 1609 if (err_file == stderr) 1610 break; 1611 err_file = stderr; 1612 } 1613 } 1614 1615 /*- 1616 * Fatal -- 1617 * Produce a Fatal error message. If jobs are running, waits for them 1618 * to finish. 1619 * 1620 * Results: 1621 * None 1622 * 1623 * Side Effects: 1624 * The program exits 1625 */ 1626 /* VARARGS */ 1627 void 1628 Fatal(const char *fmt, ...) 1629 { 1630 va_list ap; 1631 1632 va_start(ap, fmt); 1633 if (jobsRunning) 1634 Job_Wait(); 1635 1636 (void)fflush(stdout); 1637 (void)vfprintf(stderr, fmt, ap); 1638 va_end(ap); 1639 (void)fprintf(stderr, "\n"); 1640 (void)fflush(stderr); 1641 1642 PrintOnError(NULL, NULL); 1643 1644 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1645 Targ_PrintGraph(2); 1646 Trace_Log(MAKEERROR, 0); 1647 exit(2); /* Not 1 so -q can distinguish error */ 1648 } 1649 1650 /* 1651 * Punt -- 1652 * Major exception once jobs are being created. Kills all jobs, prints 1653 * a message and exits. 1654 * 1655 * Results: 1656 * None 1657 * 1658 * Side Effects: 1659 * All children are killed indiscriminately and the program Lib_Exits 1660 */ 1661 /* VARARGS */ 1662 void 1663 Punt(const char *fmt, ...) 1664 { 1665 va_list ap; 1666 1667 va_start(ap, fmt); 1668 (void)fflush(stdout); 1669 (void)fprintf(stderr, "%s: ", progname); 1670 (void)vfprintf(stderr, fmt, ap); 1671 va_end(ap); 1672 (void)fprintf(stderr, "\n"); 1673 (void)fflush(stderr); 1674 1675 PrintOnError(NULL, NULL); 1676 1677 DieHorribly(); 1678 } 1679 1680 /*- 1681 * DieHorribly -- 1682 * Exit without giving a message. 1683 * 1684 * Results: 1685 * None 1686 * 1687 * Side Effects: 1688 * A big one... 1689 */ 1690 void 1691 DieHorribly(void) 1692 { 1693 if (jobsRunning) 1694 Job_AbortAll(); 1695 if (DEBUG(GRAPH2)) 1696 Targ_PrintGraph(2); 1697 Trace_Log(MAKEERROR, 0); 1698 exit(2); /* Not 1, so -q can distinguish error */ 1699 } 1700 1701 /* 1702 * Finish -- 1703 * Called when aborting due to errors in child shell to signal 1704 * abnormal exit. 1705 * 1706 * Results: 1707 * None 1708 * 1709 * Side Effects: 1710 * The program exits 1711 */ 1712 void 1713 Finish(int errors) 1714 /* number of errors encountered in Make_Make */ 1715 { 1716 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1717 } 1718 1719 /* 1720 * eunlink -- 1721 * Remove a file carefully, avoiding directories. 1722 */ 1723 int 1724 eunlink(const char *file) 1725 { 1726 struct stat st; 1727 1728 if (lstat(file, &st) == -1) 1729 return -1; 1730 1731 if (S_ISDIR(st.st_mode)) { 1732 errno = EISDIR; 1733 return -1; 1734 } 1735 return unlink(file); 1736 } 1737 1738 /* 1739 * execError -- 1740 * Print why exec failed, avoiding stdio. 1741 */ 1742 void 1743 execError(const char *af, const char *av) 1744 { 1745 #ifdef USE_IOVEC 1746 int i = 0; 1747 struct iovec iov[8]; 1748 #define IOADD(s) \ 1749 (void)(iov[i].iov_base = UNCONST(s), \ 1750 iov[i].iov_len = strlen(iov[i].iov_base), \ 1751 i++) 1752 #else 1753 #define IOADD(void)write(2, s, strlen(s)) 1754 #endif 1755 1756 IOADD(progname); 1757 IOADD(": "); 1758 IOADD(af); 1759 IOADD("("); 1760 IOADD(av); 1761 IOADD(") failed ("); 1762 IOADD(strerror(errno)); 1763 IOADD(")\n"); 1764 1765 #ifdef USE_IOVEC 1766 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1767 continue; 1768 #endif 1769 } 1770 1771 /* 1772 * usage -- 1773 * exit with usage message 1774 */ 1775 static void 1776 usage(void) 1777 { 1778 char *p; 1779 if ((p = strchr(progname, '[')) != NULL) 1780 *p = '\0'; 1781 1782 (void)fprintf(stderr, 1783 "usage: %s [-BeikNnqrstWwX] \n\ 1784 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1785 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1786 [-V variable] [variable=value] [target ...]\n", progname); 1787 exit(2); 1788 } 1789 1790 1791 int 1792 PrintAddr(void *a, void *b) 1793 { 1794 printf("%lx ", (unsigned long) a); 1795 return b ? 0 : 0; 1796 } 1797 1798 1799 1800 void 1801 PrintOnError(GNode *gn, const char *s) 1802 { 1803 static GNode *en = NULL; 1804 char tmp[64]; 1805 char *cp; 1806 1807 if (s) 1808 printf("%s", s); 1809 1810 printf("\n%s: stopped in %s\n", progname, curdir); 1811 1812 if (en) 1813 return; /* we've been here! */ 1814 if (gn) { 1815 /* 1816 * We can print this even if there is no .ERROR target. 1817 */ 1818 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1819 } 1820 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1821 sizeof(tmp) - 1); 1822 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1823 if (cp) { 1824 if (*cp) 1825 printf("%s", cp); 1826 free(cp); 1827 } 1828 /* 1829 * Finally, see if there is a .ERROR target, and run it if so. 1830 */ 1831 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1832 if (en) { 1833 en->type |= OP_SPECIAL; 1834 Compat_Make(en, en); 1835 } 1836 } 1837 1838 void 1839 Main_ExportMAKEFLAGS(Boolean first) 1840 { 1841 static int once = 1; 1842 char tmp[64]; 1843 char *s; 1844 1845 if (once != first) 1846 return; 1847 once = 0; 1848 1849 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1850 sizeof(tmp)); 1851 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1852 if (s && *s) { 1853 #ifdef POSIX 1854 setenv("MAKEFLAGS", s, 1); 1855 #else 1856 setenv("MAKE", s, 1); 1857 #endif 1858 } 1859 } 1860 1861 char * 1862 getTmpdir(void) 1863 { 1864 static char *tmpdir = NULL; 1865 1866 if (!tmpdir) { 1867 struct stat st; 1868 1869 /* 1870 * Honor $TMPDIR but only if it is valid. 1871 * Ensure it ends with /. 1872 */ 1873 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1874 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1875 free(tmpdir); 1876 tmpdir = bmake_strdup(_PATH_TMP); 1877 } 1878 } 1879 return tmpdir; 1880 } 1881 1882 /* 1883 * Create and open a temp file using "pattern". 1884 * If "fnamep" is provided set it to a copy of the filename created. 1885 * Otherwise unlink the file once open. 1886 */ 1887 int 1888 mkTempFile(const char *pattern, char **fnamep) 1889 { 1890 static char *tmpdir = NULL; 1891 char tfile[MAXPATHLEN]; 1892 int fd; 1893 1894 if (!pattern) 1895 pattern = TMPPAT; 1896 if (!tmpdir) 1897 tmpdir = getTmpdir(); 1898 if (pattern[0] == '/') { 1899 snprintf(tfile, sizeof(tfile), "%s", pattern); 1900 } else { 1901 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1902 } 1903 if ((fd = mkstemp(tfile)) < 0) 1904 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1905 if (fnamep) { 1906 *fnamep = bmake_strdup(tfile); 1907 } else { 1908 unlink(tfile); /* we just want the descriptor */ 1909 } 1910 return fd; 1911 } 1912 1913 1914 /* 1915 * Return a Boolean based on setting of a knob. 1916 * 1917 * If the knob is not set, the supplied default is the return value. 1918 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1919 * is FALSE, otherwise TRUE. 1920 */ 1921 Boolean 1922 getBoolean(const char *name, Boolean bf) 1923 { 1924 char tmp[64]; 1925 char *cp; 1926 1927 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1928 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1929 1930 if (cp) { 1931 switch(*cp) { 1932 case '\0': /* not set - the default wins */ 1933 break; 1934 case '0': 1935 case 'f': 1936 case 'n': 1937 bf = FALSE; 1938 break; 1939 case 'o': 1940 switch (cp[1]) { 1941 case 'f': 1942 bf = FALSE; 1943 break; 1944 default: 1945 bf = TRUE; 1946 break; 1947 } 1948 break; 1949 default: 1950 bf = TRUE; 1951 break; 1952 } 1953 free(cp); 1954 } 1955 } 1956 return (bf); 1957 } 1958
Indexes created Tue Sep 23 21:09:50 GMT 2025