main.c revision 1.203.2.2
1 /* $NetBSD: main.c,v 1.203.2.2 2013/06/23 06:29:00 tls 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 1.203.2.2 2013/06/23 06:29:00 tls 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 1.203.2.2 2013/06/23 06:29:00 tls 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 #include <sys/utsname.h> 123 #include <sys/wait.h> 124 125 #include <errno.h> 126 #include <fcntl.h> 127 #include <stdarg.h> 128 #include <stdio.h> 129 #include <stdlib.h> 130 #include <time.h> 131 132 #include "make.h" 133 #include "hash.h" 134 #include "dir.h" 135 #include "job.h" 136 #include "pathnames.h" 137 #include "trace.h" 138 139 #ifdef USE_IOVEC 140 #include <sys/uio.h> 141 #endif 142 143 #ifndef DEFMAXLOCAL 144 #define DEFMAXLOCAL DEFMAXJOBS 145 #endif /* DEFMAXLOCAL */ 146 147 Lst create; /* Targets to be made */ 148 time_t now; /* Time at start of make */ 149 GNode *DEFAULT; /* .DEFAULT node */ 150 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 151 152 static Boolean noBuiltins; /* -r flag */ 153 static Lst makefiles; /* ordered list of makefiles to read */ 154 static Boolean printVars; /* print value of one or more vars */ 155 static Lst variables; /* list of variables to print */ 156 int maxJobs; /* -j argument */ 157 static int maxJobTokens; /* -j argument */ 158 Boolean compatMake; /* -B argument */ 159 int debug; /* -d argument */ 160 Boolean debugVflag; /* -dV */ 161 Boolean noExecute; /* -n flag */ 162 Boolean noRecursiveExecute; /* -N flag */ 163 Boolean keepgoing; /* -k flag */ 164 Boolean queryFlag; /* -q flag */ 165 Boolean touchFlag; /* -t flag */ 166 Boolean ignoreErrors; /* -i flag */ 167 Boolean beSilent; /* -s flag */ 168 Boolean oldVars; /* variable substitution style */ 169 Boolean checkEnvFirst; /* -e flag */ 170 Boolean parseWarnFatal; /* -W flag */ 171 Boolean jobServer; /* -J flag */ 172 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 173 Boolean varNoExportEnv; /* -X flag */ 174 Boolean doing_depend; /* Set while reading .depend */ 175 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 176 static const char * tracefile; 177 static void MainParseArgs(int, char **); 178 static int ReadMakefile(const void *, const void *); 179 static void usage(void) MAKE_ATTR_DEAD; 180 181 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 182 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 183 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 184 char *progname; /* the program name */ 185 char *makeDependfile; 186 pid_t myPid; 187 188 Boolean forceJobs = FALSE; 189 190 extern Lst parseIncPath; 191 192 static void 193 parse_debug_options(const char *argvalue) 194 { 195 const char *modules; 196 const char *mode; 197 char *fname; 198 int len; 199 200 for (modules = argvalue; *modules; ++modules) { 201 switch (*modules) { 202 case 'A': 203 debug = ~0; 204 break; 205 case 'a': 206 debug |= DEBUG_ARCH; 207 break; 208 case 'C': 209 debug |= DEBUG_CWD; 210 break; 211 case 'c': 212 debug |= DEBUG_COND; 213 break; 214 case 'd': 215 debug |= DEBUG_DIR; 216 break; 217 case 'e': 218 debug |= DEBUG_ERROR; 219 break; 220 case 'f': 221 debug |= DEBUG_FOR; 222 break; 223 case 'g': 224 if (modules[1] == '1') { 225 debug |= DEBUG_GRAPH1; 226 ++modules; 227 } 228 else if (modules[1] == '2') { 229 debug |= DEBUG_GRAPH2; 230 ++modules; 231 } 232 else if (modules[1] == '3') { 233 debug |= DEBUG_GRAPH3; 234 ++modules; 235 } 236 break; 237 case 'j': 238 debug |= DEBUG_JOB; 239 break; 240 case 'l': 241 debug |= DEBUG_LOUD; 242 break; 243 case 'M': 244 debug |= DEBUG_META; 245 break; 246 case 'm': 247 debug |= DEBUG_MAKE; 248 break; 249 case 'n': 250 debug |= DEBUG_SCRIPT; 251 break; 252 case 'p': 253 debug |= DEBUG_PARSE; 254 break; 255 case 's': 256 debug |= DEBUG_SUFF; 257 break; 258 case 't': 259 debug |= DEBUG_TARG; 260 break; 261 case 'V': 262 debugVflag = TRUE; 263 break; 264 case 'v': 265 debug |= DEBUG_VAR; 266 break; 267 case 'x': 268 debug |= DEBUG_SHELL; 269 break; 270 case 'F': 271 if (debug_file != stdout && debug_file != stderr) 272 fclose(debug_file); 273 if (*++modules == '+') { 274 modules++; 275 mode = "a"; 276 } else 277 mode = "w"; 278 if (strcmp(modules, "stdout") == 0) { 279 debug_file = stdout; 280 goto debug_setbuf; 281 } 282 if (strcmp(modules, "stderr") == 0) { 283 debug_file = stderr; 284 goto debug_setbuf; 285 } 286 len = strlen(modules); 287 fname = malloc(len + 20); 288 memcpy(fname, modules, len + 1); 289 /* Let the filename be modified by the pid */ 290 if (strcmp(fname + len - 3, ".%d") == 0) 291 snprintf(fname + len - 2, 20, "%d", getpid()); 292 debug_file = fopen(fname, mode); 293 if (!debug_file) { 294 fprintf(stderr, "Cannot open debug file %s\n", 295 fname); 296 usage(); 297 } 298 free(fname); 299 goto debug_setbuf; 300 default: 301 (void)fprintf(stderr, 302 "%s: illegal argument to d option -- %c\n", 303 progname, *modules); 304 usage(); 305 } 306 } 307 debug_setbuf: 308 /* 309 * Make the debug_file unbuffered, and make 310 * stdout line buffered (unless debugfile == stdout). 311 */ 312 setvbuf(debug_file, NULL, _IONBF, 0); 313 if (debug_file != stdout) { 314 setvbuf(stdout, NULL, _IOLBF, 0); 315 } 316 } 317 318 /*- 319 * MainParseArgs -- 320 * Parse a given argument vector. Called from main() and from 321 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 322 * 323 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 324 * 325 * Results: 326 * None 327 * 328 * Side Effects: 329 * Various global and local flags will be set depending on the flags 330 * given 331 */ 332 static void 333 MainParseArgs(int argc, char **argv) 334 { 335 char *p; 336 int c = '?'; 337 int arginc; 338 char *argvalue; 339 const char *getopt_def; 340 char *optscan; 341 Boolean inOption, dashDash = FALSE; 342 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 343 344 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst" 345 /* Can't actually use getopt(3) because rescanning is not portable */ 346 347 getopt_def = OPTFLAGS; 348 rearg: 349 inOption = FALSE; 350 optscan = NULL; 351 while(argc > 1) { 352 char *getopt_spec; 353 if(!inOption) 354 optscan = argv[1]; 355 c = *optscan++; 356 arginc = 0; 357 if(inOption) { 358 if(c == '\0') { 359 ++argv; 360 --argc; 361 inOption = FALSE; 362 continue; 363 } 364 } else { 365 if (c != '-' || dashDash) 366 break; 367 inOption = TRUE; 368 c = *optscan++; 369 } 370 /* '-' found at some earlier point */ 371 getopt_spec = strchr(getopt_def, c); 372 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 373 /* -<something> found, and <something> should have an arg */ 374 inOption = FALSE; 375 arginc = 1; 376 argvalue = optscan; 377 if(*argvalue == '\0') { 378 if (argc < 3) 379 goto noarg; 380 argvalue = argv[2]; 381 arginc = 2; 382 } 383 } else { 384 argvalue = NULL; 385 } 386 switch(c) { 387 case '\0': 388 arginc = 1; 389 inOption = FALSE; 390 break; 391 case 'B': 392 compatMake = TRUE; 393 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 394 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 395 break; 396 case 'C': 397 if (chdir(argvalue) == -1) { 398 (void)fprintf(stderr, 399 "%s: chdir %s: %s\n", 400 progname, argvalue, 401 strerror(errno)); 402 exit(1); 403 } 404 if (getcwd(curdir, MAXPATHLEN) == NULL) { 405 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 406 exit(2); 407 } 408 ignorePWD = TRUE; 409 break; 410 case 'D': 411 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 412 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 413 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 414 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 415 break; 416 case 'I': 417 if (argvalue == NULL) goto noarg; 418 Parse_AddIncludeDir(argvalue); 419 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 420 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 421 break; 422 case 'J': 423 if (argvalue == NULL) goto noarg; 424 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 425 (void)fprintf(stderr, 426 "%s: internal error -- J option malformed (%s)\n", 427 progname, argvalue); 428 usage(); 429 } 430 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 431 (fcntl(jp_1, F_GETFD, 0) < 0)) { 432 #if 0 433 (void)fprintf(stderr, 434 "%s: ###### warning -- J descriptors were closed!\n", 435 progname); 436 exit(2); 437 #endif 438 jp_0 = -1; 439 jp_1 = -1; 440 compatMake = TRUE; 441 } else { 442 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 443 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 444 jobServer = TRUE; 445 } 446 break; 447 case 'N': 448 noExecute = TRUE; 449 noRecursiveExecute = TRUE; 450 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 451 break; 452 case 'S': 453 keepgoing = FALSE; 454 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 455 break; 456 case 'T': 457 if (argvalue == NULL) goto noarg; 458 tracefile = bmake_strdup(argvalue); 459 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 460 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 461 break; 462 case 'V': 463 if (argvalue == NULL) goto noarg; 464 printVars = TRUE; 465 (void)Lst_AtEnd(variables, argvalue); 466 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 467 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 468 break; 469 case 'W': 470 parseWarnFatal = TRUE; 471 break; 472 case 'X': 473 varNoExportEnv = TRUE; 474 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 475 break; 476 case 'd': 477 if (argvalue == NULL) goto noarg; 478 /* If '-d-opts' don't pass to children */ 479 if (argvalue[0] == '-') 480 argvalue++; 481 else { 482 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 483 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 484 } 485 parse_debug_options(argvalue); 486 break; 487 case 'e': 488 checkEnvFirst = TRUE; 489 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 490 break; 491 case 'f': 492 if (argvalue == NULL) goto noarg; 493 (void)Lst_AtEnd(makefiles, argvalue); 494 break; 495 case 'i': 496 ignoreErrors = TRUE; 497 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 498 break; 499 case 'j': 500 if (argvalue == NULL) goto noarg; 501 forceJobs = TRUE; 502 maxJobs = strtol(argvalue, &p, 0); 503 if (*p != '\0' || maxJobs < 1) { 504 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 505 progname); 506 exit(1); 507 } 508 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 509 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 510 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 511 maxJobTokens = maxJobs; 512 break; 513 case 'k': 514 keepgoing = TRUE; 515 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 516 break; 517 case 'm': 518 if (argvalue == NULL) goto noarg; 519 /* look for magic parent directory search string */ 520 if (strncmp(".../", argvalue, 4) == 0) { 521 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 522 found_path, sizeof(found_path))) 523 break; /* nothing doing */ 524 (void)Dir_AddDir(sysIncPath, found_path); 525 } else { 526 (void)Dir_AddDir(sysIncPath, argvalue); 527 } 528 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 529 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 530 break; 531 case 'n': 532 noExecute = TRUE; 533 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 534 break; 535 case 'q': 536 queryFlag = TRUE; 537 /* Kind of nonsensical, wot? */ 538 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 539 break; 540 case 'r': 541 noBuiltins = TRUE; 542 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 543 break; 544 case 's': 545 beSilent = TRUE; 546 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 547 break; 548 case 't': 549 touchFlag = TRUE; 550 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 551 break; 552 case '-': 553 dashDash = TRUE; 554 break; 555 default: 556 case '?': 557 usage(); 558 } 559 argv += arginc; 560 argc -= arginc; 561 } 562 563 oldVars = TRUE; 564 565 /* 566 * See if the rest of the arguments are variable assignments and 567 * perform them if so. Else take them to be targets and stuff them 568 * on the end of the "create" list. 569 */ 570 for (; argc > 1; ++argv, --argc) 571 if (Parse_IsVar(argv[1])) { 572 Parse_DoVar(argv[1], VAR_CMD); 573 } else { 574 if (!*argv[1]) 575 Punt("illegal (null) argument."); 576 if (*argv[1] == '-' && !dashDash) 577 goto rearg; 578 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 579 } 580 581 return; 582 noarg: 583 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 584 progname, c); 585 usage(); 586 } 587 588 /*- 589 * Main_ParseArgLine -- 590 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 591 * is encountered and by main() when reading the .MAKEFLAGS envariable. 592 * Takes a line of arguments and breaks it into its 593 * component words and passes those words and the number of them to the 594 * MainParseArgs function. 595 * The line should have all its leading whitespace removed. 596 * 597 * Input: 598 * line Line to fracture 599 * 600 * Results: 601 * None 602 * 603 * Side Effects: 604 * Only those that come from the various arguments. 605 */ 606 void 607 Main_ParseArgLine(const char *line) 608 { 609 char **argv; /* Manufactured argument vector */ 610 int argc; /* Number of arguments in argv */ 611 char *args; /* Space used by the args */ 612 char *buf, *p1; 613 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 614 size_t len; 615 616 if (line == NULL) 617 return; 618 for (; *line == ' '; ++line) 619 continue; 620 if (!*line) 621 return; 622 623 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 624 (void)snprintf(buf, len, "%s %s", argv0, line); 625 if (p1) 626 free(p1); 627 628 argv = brk_string(buf, &argc, TRUE, &args); 629 if (argv == NULL) { 630 Error("Unterminated quoted string [%s]", buf); 631 free(buf); 632 return; 633 } 634 free(buf); 635 MainParseArgs(argc, argv); 636 637 free(args); 638 free(argv); 639 } 640 641 Boolean 642 Main_SetObjdir(const char *path) 643 { 644 struct stat sb; 645 char *p = NULL; 646 char buf[MAXPATHLEN + 1]; 647 Boolean rc = FALSE; 648 649 /* expand variable substitutions */ 650 if (strchr(path, '$') != 0) { 651 snprintf(buf, MAXPATHLEN, "%s", path); 652 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 653 } 654 655 if (path[0] != '/') { 656 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 657 path = buf; 658 } 659 660 /* look for the directory and try to chdir there */ 661 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 662 if (chdir(path)) { 663 (void)fprintf(stderr, "make warning: %s: %s.\n", 664 path, strerror(errno)); 665 } else { 666 strncpy(objdir, path, MAXPATHLEN); 667 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 668 setenv("PWD", objdir, 1); 669 Dir_InitDot(); 670 rc = TRUE; 671 } 672 } 673 674 if (p) 675 free(p); 676 return rc; 677 } 678 679 /*- 680 * ReadAllMakefiles -- 681 * wrapper around ReadMakefile() to read all. 682 * 683 * Results: 684 * TRUE if ok, FALSE on error 685 */ 686 static int 687 ReadAllMakefiles(const void *p, const void *q) 688 { 689 return (ReadMakefile(p, q) == 0); 690 } 691 692 int 693 str2Lst_Append(Lst lp, char *str, const char *sep) 694 { 695 char *cp; 696 int n; 697 698 if (!sep) 699 sep = " \t"; 700 701 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 702 (void)Lst_AtEnd(lp, cp); 703 n++; 704 } 705 return (n); 706 } 707 708 #ifdef SIGINFO 709 /*ARGSUSED*/ 710 static void 711 siginfo(int signo MAKE_ATTR_UNUSED) 712 { 713 char dir[MAXPATHLEN]; 714 char str[2 * MAXPATHLEN]; 715 int len; 716 if (getcwd(dir, sizeof(dir)) == NULL) 717 return; 718 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 719 if (len > 0) 720 (void)write(STDERR_FILENO, str, (size_t)len); 721 } 722 #endif 723 724 /* 725 * Allow makefiles some control over the mode we run in. 726 */ 727 void 728 MakeMode(const char *mode) 729 { 730 char *mp = NULL; 731 732 if (!mode) 733 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 734 735 if (mode && *mode) { 736 if (strstr(mode, "compat")) { 737 compatMake = TRUE; 738 forceJobs = FALSE; 739 } 740 #if USE_META 741 if (strstr(mode, "meta")) 742 meta_mode_init(mode); 743 #endif 744 } 745 if (mp) 746 free(mp); 747 } 748 749 /*- 750 * main -- 751 * The main function, for obvious reasons. Initializes variables 752 * and a few modules, then parses the arguments give it in the 753 * environment and on the command line. Reads the system makefile 754 * followed by either Makefile, makefile or the file given by the 755 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 756 * flags it has received by then uses either the Make or the Compat 757 * module to create the initial list of targets. 758 * 759 * Results: 760 * If -q was given, exits -1 if anything was out-of-date. Else it exits 761 * 0. 762 * 763 * Side Effects: 764 * The program exits when done. Targets are created. etc. etc. etc. 765 */ 766 int 767 main(int argc, char **argv) 768 { 769 Lst targs; /* target nodes to create -- passed to Make_Init */ 770 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 771 struct stat sb, sa; 772 char *p1, *path, *pwd; 773 char mdpath[MAXPATHLEN]; 774 const char *machine = getenv("MACHINE"); 775 const char *machine_arch = getenv("MACHINE_ARCH"); 776 char *syspath = getenv("MAKESYSPATH"); 777 Lst sysMkPath; /* Path of sys.mk */ 778 char *cp = NULL, *start; 779 /* avoid faults on read-only strings */ 780 static char defsyspath[] = _PATH_DEFSYSPATH; 781 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 782 struct timeval rightnow; /* to initialize random seed */ 783 struct utsname utsname; 784 785 /* default to writing debug to stderr */ 786 debug_file = stderr; 787 788 #ifdef SIGINFO 789 (void)bmake_signal(SIGINFO, siginfo); 790 #endif 791 /* 792 * Set the seed to produce a different random sequence 793 * on each program execution. 794 */ 795 gettimeofday(&rightnow, NULL); 796 srandom(rightnow.tv_sec + rightnow.tv_usec); 797 798 if ((progname = strrchr(argv[0], '/')) != NULL) 799 progname++; 800 else 801 progname = argv[0]; 802 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 803 /* 804 * get rid of resource limit on file descriptors 805 */ 806 { 807 struct rlimit rl; 808 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 809 rl.rlim_cur != rl.rlim_max) { 810 rl.rlim_cur = rl.rlim_max; 811 (void)setrlimit(RLIMIT_NOFILE, &rl); 812 } 813 } 814 #endif 815 816 if (uname(&utsname) == -1) { 817 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 818 strerror(errno)); 819 exit(2); 820 } 821 822 /* 823 * Get the name of this type of MACHINE from utsname 824 * so we can share an executable for similar machines. 825 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 826 * 827 * Note that both MACHINE and MACHINE_ARCH are decided at 828 * run-time. 829 */ 830 if (!machine) { 831 #ifdef MAKE_NATIVE 832 machine = utsname.machine; 833 #else 834 #ifdef MAKE_MACHINE 835 machine = MAKE_MACHINE; 836 #else 837 machine = "unknown"; 838 #endif 839 #endif 840 } 841 842 if (!machine_arch) { 843 #ifndef MACHINE_ARCH 844 #ifdef MAKE_MACHINE_ARCH 845 machine_arch = MAKE_MACHINE_ARCH; 846 #else 847 machine_arch = "unknown"; 848 #endif 849 #else 850 machine_arch = MACHINE_ARCH; 851 #endif 852 } 853 854 myPid = getpid(); /* remember this for vFork() */ 855 856 /* 857 * Just in case MAKEOBJDIR wants us to do something tricky. 858 */ 859 Var_Init(); /* Initialize the lists of variables for 860 * parsing arguments */ 861 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 862 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 863 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 864 #ifdef MAKE_VERSION 865 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 866 #endif 867 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 868 /* 869 * This is the traditional preference for makefiles. 870 */ 871 #ifndef MAKEFILE_PREFERENCE_LIST 872 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 873 #endif 874 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 875 VAR_GLOBAL, 0); 876 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 877 878 create = Lst_Init(FALSE); 879 makefiles = Lst_Init(FALSE); 880 printVars = FALSE; 881 debugVflag = FALSE; 882 variables = Lst_Init(FALSE); 883 beSilent = FALSE; /* Print commands as executed */ 884 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 885 noExecute = FALSE; /* Execute all commands */ 886 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 887 keepgoing = FALSE; /* Stop on error */ 888 allPrecious = FALSE; /* Remove targets when interrupted */ 889 queryFlag = FALSE; /* This is not just a check-run */ 890 noBuiltins = FALSE; /* Read the built-in rules */ 891 touchFlag = FALSE; /* Actually update targets */ 892 debug = 0; /* No debug verbosity, please. */ 893 jobsRunning = FALSE; 894 895 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 896 maxJobTokens = maxJobs; 897 compatMake = FALSE; /* No compat mode */ 898 ignorePWD = FALSE; 899 900 /* 901 * Initialize the parsing, directory and variable modules to prepare 902 * for the reading of inclusion paths and variable settings on the 903 * command line 904 */ 905 906 /* 907 * Initialize various variables. 908 * MAKE also gets this name, for compatibility 909 * .MAKEFLAGS gets set to the empty string just in case. 910 * MFLAGS also gets initialized empty, for compatibility. 911 */ 912 Parse_Init(); 913 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 914 /* 915 * Leave alone if it is an absolute path, or if it does 916 * not contain a '/' in which case we need to find it in 917 * the path, like execvp(3) and the shells do. 918 */ 919 p1 = argv[0]; 920 } else { 921 /* 922 * A relative path, canonicalize it. 923 */ 924 p1 = realpath(argv[0], mdpath); 925 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 926 p1 = argv[0]; /* realpath failed */ 927 } 928 } 929 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 930 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 931 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 932 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 933 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 934 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 935 936 /* 937 * Set some other useful macros 938 */ 939 { 940 char tmp[64], *ep; 941 942 snprintf(tmp, sizeof(tmp), "%d", 943 (ep = getenv(MAKE_LEVEL_ENV)) ? atoi(ep) + 1 : 0); 944 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 945 snprintf(tmp, sizeof(tmp), "%u", myPid); 946 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 947 snprintf(tmp, sizeof(tmp), "%u", getppid()); 948 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 949 } 950 Job_SetPrefix(); 951 952 #ifdef USE_META 953 meta_init(); 954 #endif 955 /* 956 * First snag any flags out of the MAKE environment variable. 957 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 958 * in a different format). 959 */ 960 #ifdef POSIX 961 Main_ParseArgLine(getenv("MAKEFLAGS")); 962 #else 963 Main_ParseArgLine(getenv("MAKE")); 964 #endif 965 966 /* 967 * Find where we are (now). 968 * We take care of PWD for the automounter below... 969 */ 970 if (getcwd(curdir, MAXPATHLEN) == NULL) { 971 (void)fprintf(stderr, "%s: getcwd: %s.\n", 972 progname, strerror(errno)); 973 exit(2); 974 } 975 976 MainParseArgs(argc, argv); 977 978 /* 979 * Verify that cwd is sane. 980 */ 981 if (stat(curdir, &sa) == -1) { 982 (void)fprintf(stderr, "%s: %s: %s.\n", 983 progname, curdir, strerror(errno)); 984 exit(2); 985 } 986 987 /* 988 * All this code is so that we know where we are when we start up 989 * on a different machine with pmake. 990 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 991 * since the value of curdir can vary depending on how we got 992 * here. Ie sitting at a shell prompt (shell that provides $PWD) 993 * or via subdir.mk in which case its likely a shell which does 994 * not provide it. 995 * So, to stop it breaking this case only, we ignore PWD if 996 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 997 */ 998 if (!ignorePWD && 999 (pwd = getenv("PWD")) != NULL && 1000 getenv("MAKEOBJDIRPREFIX") == NULL) { 1001 const char *makeobjdir = getenv("MAKEOBJDIR"); 1002 1003 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1004 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 1005 sa.st_dev == sb.st_dev) 1006 (void)strncpy(curdir, pwd, MAXPATHLEN); 1007 } 1008 } 1009 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1010 1011 /* 1012 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1013 * MAKEOBJDIR is set in the environment, try only that value 1014 * and fall back to .CURDIR if it does not exist. 1015 * 1016 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1017 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1018 * of these paths exist, just use .CURDIR. 1019 */ 1020 Dir_Init(curdir); 1021 (void)Main_SetObjdir(curdir); 1022 1023 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1024 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1025 (void)Main_SetObjdir(mdpath); 1026 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1027 (void)Main_SetObjdir(path); 1028 } else { 1029 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1030 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1031 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1032 _PATH_OBJDIRPREFIX, curdir); 1033 (void)Main_SetObjdir(mdpath); 1034 } 1035 } 1036 1037 /* 1038 * Be compatible if user did not specify -j and did not explicitly 1039 * turned compatibility on 1040 */ 1041 if (!compatMake && !forceJobs) { 1042 compatMake = TRUE; 1043 } 1044 1045 /* 1046 * Initialize archive, target and suffix modules in preparation for 1047 * parsing the makefile(s) 1048 */ 1049 Arch_Init(); 1050 Targ_Init(); 1051 Suff_Init(); 1052 Trace_Init(tracefile); 1053 1054 DEFAULT = NULL; 1055 (void)time(&now); 1056 1057 Trace_Log(MAKESTART, NULL); 1058 1059 /* 1060 * Set up the .TARGETS variable to contain the list of targets to be 1061 * created. If none specified, make the variable empty -- the parser 1062 * will fill the thing in with the default or .MAIN target. 1063 */ 1064 if (!Lst_IsEmpty(create)) { 1065 LstNode ln; 1066 1067 for (ln = Lst_First(create); ln != NULL; 1068 ln = Lst_Succ(ln)) { 1069 char *name = (char *)Lst_Datum(ln); 1070 1071 Var_Append(".TARGETS", name, VAR_GLOBAL); 1072 } 1073 } else 1074 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1075 1076 1077 /* 1078 * If no user-supplied system path was given (through the -m option) 1079 * add the directories from the DEFSYSPATH (more than one may be given 1080 * as dir1:...:dirn) to the system include path. 1081 */ 1082 if (syspath == NULL || *syspath == '\0') 1083 syspath = defsyspath; 1084 else 1085 syspath = bmake_strdup(syspath); 1086 1087 for (start = syspath; *start != '\0'; start = cp) { 1088 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1089 continue; 1090 if (*cp == ':') { 1091 *cp++ = '\0'; 1092 } 1093 /* look for magic parent directory search string */ 1094 if (strncmp(".../", start, 4) != 0) { 1095 (void)Dir_AddDir(defIncPath, start); 1096 } else { 1097 if (Dir_FindHereOrAbove(curdir, start+4, 1098 found_path, sizeof(found_path))) { 1099 (void)Dir_AddDir(defIncPath, found_path); 1100 } 1101 } 1102 } 1103 if (syspath != defsyspath) 1104 free(syspath); 1105 1106 /* 1107 * Read in the built-in rules first, followed by the specified 1108 * makefile, if it was (makefile != NULL), or the default 1109 * makefile and Makefile, in that order, if it wasn't. 1110 */ 1111 if (!noBuiltins) { 1112 LstNode ln; 1113 1114 sysMkPath = Lst_Init(FALSE); 1115 Dir_Expand(_PATH_DEFSYSMK, 1116 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1117 sysMkPath); 1118 if (Lst_IsEmpty(sysMkPath)) 1119 Fatal("%s: no system rules (%s).", progname, 1120 _PATH_DEFSYSMK); 1121 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1122 if (ln == NULL) 1123 Fatal("%s: cannot open %s.", progname, 1124 (char *)Lst_Datum(ln)); 1125 } 1126 1127 if (!Lst_IsEmpty(makefiles)) { 1128 LstNode ln; 1129 1130 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1131 if (ln != NULL) 1132 Fatal("%s: cannot open %s.", progname, 1133 (char *)Lst_Datum(ln)); 1134 } else { 1135 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1136 VAR_CMD, 0); 1137 if (p1) { 1138 (void)str2Lst_Append(makefiles, p1, NULL); 1139 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1140 free(p1); 1141 } 1142 } 1143 1144 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1145 if (!noBuiltins || !printVars) { 1146 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1147 VAR_CMD, 0); 1148 doing_depend = TRUE; 1149 (void)ReadMakefile(makeDependfile, NULL); 1150 doing_depend = FALSE; 1151 } 1152 1153 MakeMode(NULL); 1154 1155 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1156 if (p1) 1157 free(p1); 1158 1159 if (!compatMake) 1160 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1161 if (DEBUG(JOB)) 1162 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1163 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1164 1165 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1166 1167 1168 /* 1169 * For compatibility, look at the directories in the VPATH variable 1170 * and add them to the search path, if the variable is defined. The 1171 * variable's value is in the same format as the PATH envariable, i.e. 1172 * <directory>:<directory>:<directory>... 1173 */ 1174 if (Var_Exists("VPATH", VAR_CMD)) { 1175 char *vpath, savec; 1176 /* 1177 * GCC stores string constants in read-only memory, but 1178 * Var_Subst will want to write this thing, so store it 1179 * in an array 1180 */ 1181 static char VPATH[] = "${VPATH}"; 1182 1183 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1184 path = vpath; 1185 do { 1186 /* skip to end of directory */ 1187 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1188 continue; 1189 /* Save terminator character so know when to stop */ 1190 savec = *cp; 1191 *cp = '\0'; 1192 /* Add directory to search path */ 1193 (void)Dir_AddDir(dirSearchPath, path); 1194 *cp = savec; 1195 path = cp + 1; 1196 } while (savec == ':'); 1197 free(vpath); 1198 } 1199 1200 /* 1201 * Now that all search paths have been read for suffixes et al, it's 1202 * time to add the default search path to their lists... 1203 */ 1204 Suff_DoPaths(); 1205 1206 /* 1207 * Propagate attributes through :: dependency lists. 1208 */ 1209 Targ_Propagate(); 1210 1211 /* print the initial graph, if the user requested it */ 1212 if (DEBUG(GRAPH1)) 1213 Targ_PrintGraph(1); 1214 1215 /* print the values of any variables requested by the user */ 1216 if (printVars) { 1217 LstNode ln; 1218 Boolean expandVars; 1219 1220 if (debugVflag) 1221 expandVars = FALSE; 1222 else 1223 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1224 for (ln = Lst_First(variables); ln != NULL; 1225 ln = Lst_Succ(ln)) { 1226 char *var = (char *)Lst_Datum(ln); 1227 char *value; 1228 1229 if (strchr(var, '$')) { 1230 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1231 } else if (expandVars) { 1232 char tmp[128]; 1233 1234 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1235 Fatal("%s: variable name too big: %s", 1236 progname, var); 1237 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1238 } else { 1239 value = Var_Value(var, VAR_GLOBAL, &p1); 1240 } 1241 printf("%s\n", value ? value : ""); 1242 if (p1) 1243 free(p1); 1244 } 1245 } else { 1246 /* 1247 * Have now read the entire graph and need to make a list of 1248 * targets to create. If none was given on the command line, 1249 * we consult the parsing module to find the main target(s) 1250 * to create. 1251 */ 1252 if (Lst_IsEmpty(create)) 1253 targs = Parse_MainName(); 1254 else 1255 targs = Targ_FindList(create, TARG_CREATE); 1256 1257 if (!compatMake) { 1258 /* 1259 * Initialize job module before traversing the graph 1260 * now that any .BEGIN and .END targets have been read. 1261 * This is done only if the -q flag wasn't given 1262 * (to prevent the .BEGIN from being executed should 1263 * it exist). 1264 */ 1265 if (!queryFlag) { 1266 Job_Init(); 1267 jobsRunning = TRUE; 1268 } 1269 1270 /* Traverse the graph, checking on all the targets */ 1271 outOfDate = Make_Run(targs); 1272 } else { 1273 /* 1274 * Compat_Init will take care of creating all the 1275 * targets as well as initializing the module. 1276 */ 1277 Compat_Run(targs); 1278 } 1279 } 1280 1281 #ifdef CLEANUP 1282 Lst_Destroy(targs, NULL); 1283 Lst_Destroy(variables, NULL); 1284 Lst_Destroy(makefiles, NULL); 1285 Lst_Destroy(create, (FreeProc *)free); 1286 #endif 1287 1288 /* print the graph now it's been processed if the user requested it */ 1289 if (DEBUG(GRAPH2)) 1290 Targ_PrintGraph(2); 1291 1292 Trace_Log(MAKEEND, 0); 1293 1294 Suff_End(); 1295 Targ_End(); 1296 Arch_End(); 1297 Var_End(); 1298 Parse_End(); 1299 Dir_End(); 1300 Job_End(); 1301 Trace_End(); 1302 1303 return outOfDate ? 1 : 0; 1304 } 1305 1306 /*- 1307 * ReadMakefile -- 1308 * Open and parse the given makefile. 1309 * 1310 * Results: 1311 * 0 if ok. -1 if couldn't open file. 1312 * 1313 * Side Effects: 1314 * lots 1315 */ 1316 static int 1317 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1318 { 1319 const char *fname = p; /* makefile to read */ 1320 int fd; 1321 size_t len = MAXPATHLEN; 1322 char *name, *path = bmake_malloc(len); 1323 1324 if (!strcmp(fname, "-")) { 1325 Parse_File(NULL /*stdin*/, -1); 1326 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1327 } else { 1328 /* if we've chdir'd, rebuild the path name */ 1329 if (strcmp(curdir, objdir) && *fname != '/') { 1330 size_t plen = strlen(curdir) + strlen(fname) + 2; 1331 if (len < plen) 1332 path = bmake_realloc(path, len = 2 * plen); 1333 1334 (void)snprintf(path, len, "%s/%s", curdir, fname); 1335 fd = open(path, O_RDONLY); 1336 if (fd != -1) { 1337 fname = path; 1338 goto found; 1339 } 1340 1341 /* If curdir failed, try objdir (ala .depend) */ 1342 plen = strlen(objdir) + strlen(fname) + 2; 1343 if (len < plen) 1344 path = bmake_realloc(path, len = 2 * plen); 1345 (void)snprintf(path, len, "%s/%s", objdir, fname); 1346 fd = open(path, O_RDONLY); 1347 if (fd != -1) { 1348 fname = path; 1349 goto found; 1350 } 1351 } else { 1352 fd = open(fname, O_RDONLY); 1353 if (fd != -1) 1354 goto found; 1355 } 1356 /* look in -I and system include directories. */ 1357 name = Dir_FindFile(fname, parseIncPath); 1358 if (!name) 1359 name = Dir_FindFile(fname, 1360 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1361 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1362 if (name) 1363 free(name); 1364 free(path); 1365 return(-1); 1366 } 1367 fname = name; 1368 /* 1369 * set the MAKEFILE variable desired by System V fans -- the 1370 * placement of the setting here means it gets set to the last 1371 * makefile specified, as it is set by SysV make. 1372 */ 1373 found: 1374 if (!doing_depend) 1375 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1376 Parse_File(fname, fd); 1377 } 1378 free(path); 1379 return(0); 1380 } 1381 1382 1383 1384 /*- 1385 * Cmd_Exec -- 1386 * Execute the command in cmd, and return the output of that command 1387 * in a string. 1388 * 1389 * Results: 1390 * A string containing the output of the command, or the empty string 1391 * If errnum is not NULL, it contains the reason for the command failure 1392 * 1393 * Side Effects: 1394 * The string must be freed by the caller. 1395 */ 1396 char * 1397 Cmd_Exec(const char *cmd, const char **errnum) 1398 { 1399 const char *args[4]; /* Args for invoking the shell */ 1400 int fds[2]; /* Pipe streams */ 1401 int cpid; /* Child PID */ 1402 int pid; /* PID from wait() */ 1403 char *res; /* result */ 1404 int status; /* command exit status */ 1405 Buffer buf; /* buffer to store the result */ 1406 char *cp; 1407 int cc; 1408 1409 1410 *errnum = NULL; 1411 1412 if (!shellName) 1413 Shell_Init(); 1414 /* 1415 * Set up arguments for shell 1416 */ 1417 args[0] = shellName; 1418 args[1] = "-c"; 1419 args[2] = cmd; 1420 args[3] = NULL; 1421 1422 /* 1423 * Open a pipe for fetching its output 1424 */ 1425 if (pipe(fds) == -1) { 1426 *errnum = "Couldn't create pipe for \"%s\""; 1427 goto bad; 1428 } 1429 1430 /* 1431 * Fork 1432 */ 1433 switch (cpid = vFork()) { 1434 case 0: 1435 /* 1436 * Close input side of pipe 1437 */ 1438 (void)close(fds[0]); 1439 1440 /* 1441 * Duplicate the output stream to the shell's output, then 1442 * shut the extra thing down. Note we don't fetch the error 1443 * stream...why not? Why? 1444 */ 1445 (void)dup2(fds[1], 1); 1446 (void)close(fds[1]); 1447 1448 Var_ExportVars(); 1449 1450 (void)execv(shellPath, UNCONST(args)); 1451 _exit(1); 1452 /*NOTREACHED*/ 1453 1454 case -1: 1455 *errnum = "Couldn't exec \"%s\""; 1456 goto bad; 1457 1458 default: 1459 /* 1460 * No need for the writing half 1461 */ 1462 (void)close(fds[1]); 1463 1464 Buf_Init(&buf, 0); 1465 1466 do { 1467 char result[BUFSIZ]; 1468 cc = read(fds[0], result, sizeof(result)); 1469 if (cc > 0) 1470 Buf_AddBytes(&buf, cc, result); 1471 } 1472 while (cc > 0 || (cc == -1 && errno == EINTR)); 1473 1474 /* 1475 * Close the input side of the pipe. 1476 */ 1477 (void)close(fds[0]); 1478 1479 /* 1480 * Wait for the process to exit. 1481 */ 1482 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1483 JobReapChild(pid, status, FALSE); 1484 continue; 1485 } 1486 cc = Buf_Size(&buf); 1487 res = Buf_Destroy(&buf, FALSE); 1488 1489 if (cc == 0) 1490 *errnum = "Couldn't read shell's output for \"%s\""; 1491 1492 if (WIFSIGNALED(status)) 1493 *errnum = "\"%s\" exited on a signal"; 1494 else if (WEXITSTATUS(status) != 0) 1495 *errnum = "\"%s\" returned non-zero status"; 1496 1497 /* 1498 * Null-terminate the result, convert newlines to spaces and 1499 * install it in the variable. 1500 */ 1501 res[cc] = '\0'; 1502 cp = &res[cc]; 1503 1504 if (cc > 0 && *--cp == '\n') { 1505 /* 1506 * A final newline is just stripped 1507 */ 1508 *cp-- = '\0'; 1509 } 1510 while (cp >= res) { 1511 if (*cp == '\n') { 1512 *cp = ' '; 1513 } 1514 cp--; 1515 } 1516 break; 1517 } 1518 return res; 1519 bad: 1520 res = bmake_malloc(1); 1521 *res = '\0'; 1522 return res; 1523 } 1524 1525 /*- 1526 * Error -- 1527 * Print an error message given its format. 1528 * 1529 * Results: 1530 * None. 1531 * 1532 * Side Effects: 1533 * The message is printed. 1534 */ 1535 /* VARARGS */ 1536 void 1537 Error(const char *fmt, ...) 1538 { 1539 va_list ap; 1540 FILE *err_file; 1541 1542 err_file = debug_file; 1543 if (err_file == stdout) 1544 err_file = stderr; 1545 (void)fflush(stdout); 1546 for (;;) { 1547 va_start(ap, fmt); 1548 fprintf(err_file, "%s: ", progname); 1549 (void)vfprintf(err_file, fmt, ap); 1550 va_end(ap); 1551 (void)fprintf(err_file, "\n"); 1552 (void)fflush(err_file); 1553 if (err_file == stderr) 1554 break; 1555 err_file = stderr; 1556 } 1557 } 1558 1559 /*- 1560 * Fatal -- 1561 * Produce a Fatal error message. If jobs are running, waits for them 1562 * to finish. 1563 * 1564 * Results: 1565 * None 1566 * 1567 * Side Effects: 1568 * The program exits 1569 */ 1570 /* VARARGS */ 1571 void 1572 Fatal(const char *fmt, ...) 1573 { 1574 va_list ap; 1575 1576 va_start(ap, fmt); 1577 if (jobsRunning) 1578 Job_Wait(); 1579 1580 (void)fflush(stdout); 1581 (void)vfprintf(stderr, fmt, ap); 1582 va_end(ap); 1583 (void)fprintf(stderr, "\n"); 1584 (void)fflush(stderr); 1585 1586 PrintOnError(NULL, NULL); 1587 1588 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1589 Targ_PrintGraph(2); 1590 Trace_Log(MAKEERROR, 0); 1591 exit(2); /* Not 1 so -q can distinguish error */ 1592 } 1593 1594 /* 1595 * Punt -- 1596 * Major exception once jobs are being created. Kills all jobs, prints 1597 * a message and exits. 1598 * 1599 * Results: 1600 * None 1601 * 1602 * Side Effects: 1603 * All children are killed indiscriminately and the program Lib_Exits 1604 */ 1605 /* VARARGS */ 1606 void 1607 Punt(const char *fmt, ...) 1608 { 1609 va_list ap; 1610 1611 va_start(ap, fmt); 1612 (void)fflush(stdout); 1613 (void)fprintf(stderr, "%s: ", progname); 1614 (void)vfprintf(stderr, fmt, ap); 1615 va_end(ap); 1616 (void)fprintf(stderr, "\n"); 1617 (void)fflush(stderr); 1618 1619 PrintOnError(NULL, NULL); 1620 1621 DieHorribly(); 1622 } 1623 1624 /*- 1625 * DieHorribly -- 1626 * Exit without giving a message. 1627 * 1628 * Results: 1629 * None 1630 * 1631 * Side Effects: 1632 * A big one... 1633 */ 1634 void 1635 DieHorribly(void) 1636 { 1637 if (jobsRunning) 1638 Job_AbortAll(); 1639 if (DEBUG(GRAPH2)) 1640 Targ_PrintGraph(2); 1641 Trace_Log(MAKEERROR, 0); 1642 exit(2); /* Not 1, so -q can distinguish error */ 1643 } 1644 1645 /* 1646 * Finish -- 1647 * Called when aborting due to errors in child shell to signal 1648 * abnormal exit. 1649 * 1650 * Results: 1651 * None 1652 * 1653 * Side Effects: 1654 * The program exits 1655 */ 1656 void 1657 Finish(int errors) 1658 /* number of errors encountered in Make_Make */ 1659 { 1660 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1661 } 1662 1663 /* 1664 * eunlink -- 1665 * Remove a file carefully, avoiding directories. 1666 */ 1667 int 1668 eunlink(const char *file) 1669 { 1670 struct stat st; 1671 1672 if (lstat(file, &st) == -1) 1673 return -1; 1674 1675 if (S_ISDIR(st.st_mode)) { 1676 errno = EISDIR; 1677 return -1; 1678 } 1679 return unlink(file); 1680 } 1681 1682 /* 1683 * execError -- 1684 * Print why exec failed, avoiding stdio. 1685 */ 1686 void 1687 execError(const char *af, const char *av) 1688 { 1689 #ifdef USE_IOVEC 1690 int i = 0; 1691 struct iovec iov[8]; 1692 #define IOADD(s) \ 1693 (void)(iov[i].iov_base = UNCONST(s), \ 1694 iov[i].iov_len = strlen(iov[i].iov_base), \ 1695 i++) 1696 #else 1697 #define IOADD(void)write(2, s, strlen(s)) 1698 #endif 1699 1700 IOADD(progname); 1701 IOADD(": "); 1702 IOADD(af); 1703 IOADD("("); 1704 IOADD(av); 1705 IOADD(") failed ("); 1706 IOADD(strerror(errno)); 1707 IOADD(")\n"); 1708 1709 #ifdef USE_IOVEC 1710 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1711 continue; 1712 #endif 1713 } 1714 1715 /* 1716 * usage -- 1717 * exit with usage message 1718 */ 1719 static void 1720 usage(void) 1721 { 1722 (void)fprintf(stderr, 1723 "usage: %s [-BeikNnqrstWX] \n\ 1724 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1725 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1726 [-V variable] [variable=value] [target ...]\n", progname); 1727 exit(2); 1728 } 1729 1730 1731 int 1732 PrintAddr(void *a, void *b) 1733 { 1734 printf("%lx ", (unsigned long) a); 1735 return b ? 0 : 0; 1736 } 1737 1738 1739 1740 void 1741 PrintOnError(GNode *gn, const char *s) 1742 { 1743 static GNode *en = NULL; 1744 char tmp[64]; 1745 char *cp; 1746 1747 if (s) 1748 printf("%s", s); 1749 1750 printf("\n%s: stopped in %s\n", progname, curdir); 1751 1752 if (en) 1753 return; /* we've been here! */ 1754 if (gn) { 1755 /* 1756 * We can print this even if there is no .ERROR target. 1757 */ 1758 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1759 } 1760 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1761 sizeof(tmp) - 1); 1762 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1763 if (cp) { 1764 if (*cp) 1765 printf("%s", cp); 1766 free(cp); 1767 } 1768 /* 1769 * Finally, see if there is a .ERROR target, and run it if so. 1770 */ 1771 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1772 if (en) { 1773 en->type |= OP_SPECIAL; 1774 Compat_Make(en, en); 1775 } 1776 } 1777 1778 void 1779 Main_ExportMAKEFLAGS(Boolean first) 1780 { 1781 static int once = 1; 1782 char tmp[64]; 1783 char *s; 1784 1785 if (once != first) 1786 return; 1787 once = 0; 1788 1789 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1790 sizeof(tmp)); 1791 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1792 if (s && *s) { 1793 #ifdef POSIX 1794 setenv("MAKEFLAGS", s, 1); 1795 #else 1796 setenv("MAKE", s, 1); 1797 #endif 1798 } 1799 } 1800 1801 char * 1802 getTmpdir(void) 1803 { 1804 static char *tmpdir = NULL; 1805 1806 if (!tmpdir) { 1807 struct stat st; 1808 1809 /* 1810 * Honor $TMPDIR but only if it is valid. 1811 * Ensure it ends with /. 1812 */ 1813 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1814 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1815 free(tmpdir); 1816 tmpdir = bmake_strdup(_PATH_TMP); 1817 } 1818 } 1819 return tmpdir; 1820 } 1821 1822 /* 1823 * Create and open a temp file using "pattern". 1824 * If "fnamep" is provided set it to a copy of the filename created. 1825 * Otherwise unlink the file once open. 1826 */ 1827 int 1828 mkTempFile(const char *pattern, char **fnamep) 1829 { 1830 static char *tmpdir = NULL; 1831 char tfile[MAXPATHLEN]; 1832 int fd; 1833 1834 if (!pattern) 1835 pattern = TMPPAT; 1836 if (!tmpdir) 1837 tmpdir = getTmpdir(); 1838 if (pattern[0] == '/') { 1839 snprintf(tfile, sizeof(tfile), "%s", pattern); 1840 } else { 1841 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1842 } 1843 if ((fd = mkstemp(tfile)) < 0) 1844 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1845 if (fnamep) { 1846 *fnamep = bmake_strdup(tfile); 1847 } else { 1848 unlink(tfile); /* we just want the descriptor */ 1849 } 1850 return fd; 1851 } 1852 1853 1854 /* 1855 * Return a Boolean based on setting of a knob. 1856 * 1857 * If the knob is not set, the supplied default is the return value. 1858 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1859 * is FALSE, otherwise TRUE. 1860 */ 1861 Boolean 1862 getBoolean(const char *name, Boolean bf) 1863 { 1864 char tmp[64]; 1865 char *cp; 1866 1867 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1868 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1869 1870 if (cp) { 1871 switch(*cp) { 1872 case '\0': /* not set - the default wins */ 1873 break; 1874 case '0': 1875 case 'f': 1876 case 'n': 1877 bf = FALSE; 1878 break; 1879 case 'o': 1880 switch (cp[1]) { 1881 case 'f': 1882 bf = FALSE; 1883 break; 1884 default: 1885 bf = TRUE; 1886 break; 1887 } 1888 break; 1889 default: 1890 bf = TRUE; 1891 break; 1892 } 1893 free(cp); 1894 } 1895 } 1896 return (bf); 1897 } 1898
Indexes created Tue Oct 21 16:10:11 GMT 2025