main.c revision 1.233
1 /* $NetBSD: main.c,v 1.233 2015/09/10 17:15:11 sjg Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.233 2015/09/10 17:15:11 sjg Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.233 2015/09/10 17:15:11 sjg Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and optional arguments 103 * for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and arguments for it. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and arguments for it. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/stat.h> 121 #ifdef MAKE_NATIVE 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <fcntl.h> 129 #include <signal.h> 130 #include <stdarg.h> 131 #include <stdio.h> 132 #include <stdlib.h> 133 #include <time.h> 134 #include <ctype.h> 135 136 #include "make.h" 137 #include "hash.h" 138 #include "dir.h" 139 #include "job.h" 140 #include "pathnames.h" 141 #include "trace.h" 142 143 #ifdef USE_IOVEC 144 #include <sys/uio.h> 145 #endif 146 147 #ifndef DEFMAXLOCAL 148 #define DEFMAXLOCAL DEFMAXJOBS 149 #endif /* DEFMAXLOCAL */ 150 151 Lst create; /* Targets to be made */ 152 time_t now; /* Time at start of make */ 153 GNode *DEFAULT; /* .DEFAULT node */ 154 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 155 156 static Boolean noBuiltins; /* -r flag */ 157 static Lst makefiles; /* ordered list of makefiles to read */ 158 static Boolean printVars; /* print value of one or more vars */ 159 static Lst variables; /* list of variables to print */ 160 int maxJobs; /* -j argument */ 161 static int maxJobTokens; /* -j argument */ 162 Boolean compatMake; /* -B argument */ 163 int debug; /* -d argument */ 164 Boolean debugVflag; /* -dV */ 165 Boolean noExecute; /* -n flag */ 166 Boolean noRecursiveExecute; /* -N flag */ 167 Boolean keepgoing; /* -k flag */ 168 Boolean queryFlag; /* -q flag */ 169 Boolean touchFlag; /* -t flag */ 170 Boolean enterFlag; /* -w flag */ 171 Boolean enterFlagObj; /* -w and objdir != srcdir */ 172 Boolean ignoreErrors; /* -i flag */ 173 Boolean beSilent; /* -s flag */ 174 Boolean oldVars; /* variable substitution style */ 175 Boolean checkEnvFirst; /* -e flag */ 176 Boolean parseWarnFatal; /* -W flag */ 177 Boolean jobServer; /* -J flag */ 178 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 179 Boolean varNoExportEnv; /* -X flag */ 180 Boolean doing_depend; /* Set while reading .depend */ 181 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 182 static const char * tracefile; 183 static void MainParseArgs(int, char **); 184 static int ReadMakefile(const void *, const void *); 185 static void usage(void) MAKE_ATTR_DEAD; 186 187 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 188 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 189 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 190 char *progname; /* the program name */ 191 char *makeDependfile; 192 pid_t myPid; 193 int makelevel; 194 195 Boolean forceJobs = FALSE; 196 197 extern Lst parseIncPath; 198 199 /* 200 * For compatibility with the POSIX version of MAKEFLAGS that includes 201 * all the options with out -, convert flags to -f -l -a -g -s. 202 */ 203 static char * 204 explode(const char *flags) 205 { 206 size_t len; 207 char *nf, *st; 208 const char *f; 209 210 if (flags == NULL) 211 return NULL; 212 213 for (f = flags; *f; f++) 214 if (!isalpha((unsigned char)*f)) 215 break; 216 217 if (*f) 218 return bmake_strdup(flags); 219 220 len = strlen(flags); 221 st = nf = bmake_malloc(len * 3 + 1); 222 while (*flags) { 223 *nf++ = '-'; 224 *nf++ = *flags++; 225 *nf++ = ' '; 226 } 227 *nf = '\0'; 228 return st; 229 } 230 231 static void 232 parse_debug_options(const char *argvalue) 233 { 234 const char *modules; 235 const char *mode; 236 char *fname; 237 int len; 238 239 for (modules = argvalue; *modules; ++modules) { 240 switch (*modules) { 241 case 'A': 242 debug = ~0; 243 break; 244 case 'a': 245 debug |= DEBUG_ARCH; 246 break; 247 case 'C': 248 debug |= DEBUG_CWD; 249 break; 250 case 'c': 251 debug |= DEBUG_COND; 252 break; 253 case 'd': 254 debug |= DEBUG_DIR; 255 break; 256 case 'e': 257 debug |= DEBUG_ERROR; 258 break; 259 case 'f': 260 debug |= DEBUG_FOR; 261 break; 262 case 'g': 263 if (modules[1] == '1') { 264 debug |= DEBUG_GRAPH1; 265 ++modules; 266 } 267 else if (modules[1] == '2') { 268 debug |= DEBUG_GRAPH2; 269 ++modules; 270 } 271 else if (modules[1] == '3') { 272 debug |= DEBUG_GRAPH3; 273 ++modules; 274 } 275 break; 276 case 'j': 277 debug |= DEBUG_JOB; 278 break; 279 case 'l': 280 debug |= DEBUG_LOUD; 281 break; 282 case 'M': 283 debug |= DEBUG_META; 284 break; 285 case 'm': 286 debug |= DEBUG_MAKE; 287 break; 288 case 'n': 289 debug |= DEBUG_SCRIPT; 290 break; 291 case 'p': 292 debug |= DEBUG_PARSE; 293 break; 294 case 's': 295 debug |= DEBUG_SUFF; 296 break; 297 case 't': 298 debug |= DEBUG_TARG; 299 break; 300 case 'V': 301 debugVflag = TRUE; 302 break; 303 case 'v': 304 debug |= DEBUG_VAR; 305 break; 306 case 'x': 307 debug |= DEBUG_SHELL; 308 break; 309 case 'F': 310 if (debug_file != stdout && debug_file != stderr) 311 fclose(debug_file); 312 if (*++modules == '+') { 313 modules++; 314 mode = "a"; 315 } else 316 mode = "w"; 317 if (strcmp(modules, "stdout") == 0) { 318 debug_file = stdout; 319 goto debug_setbuf; 320 } 321 if (strcmp(modules, "stderr") == 0) { 322 debug_file = stderr; 323 goto debug_setbuf; 324 } 325 len = strlen(modules); 326 fname = malloc(len + 20); 327 memcpy(fname, modules, len + 1); 328 /* Let the filename be modified by the pid */ 329 if (strcmp(fname + len - 3, ".%d") == 0) 330 snprintf(fname + len - 2, 20, "%d", getpid()); 331 debug_file = fopen(fname, mode); 332 if (!debug_file) { 333 fprintf(stderr, "Cannot open debug file %s\n", 334 fname); 335 usage(); 336 } 337 free(fname); 338 goto debug_setbuf; 339 default: 340 (void)fprintf(stderr, 341 "%s: illegal argument to d option -- %c\n", 342 progname, *modules); 343 usage(); 344 } 345 } 346 debug_setbuf: 347 /* 348 * Make the debug_file unbuffered, and make 349 * stdout line buffered (unless debugfile == stdout). 350 */ 351 setvbuf(debug_file, NULL, _IONBF, 0); 352 if (debug_file != stdout) { 353 setvbuf(stdout, NULL, _IOLBF, 0); 354 } 355 } 356 357 /*- 358 * MainParseArgs -- 359 * Parse a given argument vector. Called from main() and from 360 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 361 * 362 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 363 * 364 * Results: 365 * None 366 * 367 * Side Effects: 368 * Various global and local flags will be set depending on the flags 369 * given 370 */ 371 static void 372 MainParseArgs(int argc, char **argv) 373 { 374 char *p; 375 int c = '?'; 376 int arginc; 377 char *argvalue; 378 const char *getopt_def; 379 char *optscan; 380 Boolean inOption, dashDash = FALSE; 381 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 382 383 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 384 /* Can't actually use getopt(3) because rescanning is not portable */ 385 386 getopt_def = OPTFLAGS; 387 rearg: 388 inOption = FALSE; 389 optscan = NULL; 390 while(argc > 1) { 391 char *getopt_spec; 392 if(!inOption) 393 optscan = argv[1]; 394 c = *optscan++; 395 arginc = 0; 396 if(inOption) { 397 if(c == '\0') { 398 ++argv; 399 --argc; 400 inOption = FALSE; 401 continue; 402 } 403 } else { 404 if (c != '-' || dashDash) 405 break; 406 inOption = TRUE; 407 c = *optscan++; 408 } 409 /* '-' found at some earlier point */ 410 getopt_spec = strchr(getopt_def, c); 411 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 412 /* -<something> found, and <something> should have an arg */ 413 inOption = FALSE; 414 arginc = 1; 415 argvalue = optscan; 416 if(*argvalue == '\0') { 417 if (argc < 3) 418 goto noarg; 419 argvalue = argv[2]; 420 arginc = 2; 421 } 422 } else { 423 argvalue = NULL; 424 } 425 switch(c) { 426 case '\0': 427 arginc = 1; 428 inOption = FALSE; 429 break; 430 case 'B': 431 compatMake = TRUE; 432 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 433 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 434 break; 435 case 'C': 436 if (chdir(argvalue) == -1) { 437 (void)fprintf(stderr, 438 "%s: chdir %s: %s\n", 439 progname, argvalue, 440 strerror(errno)); 441 exit(1); 442 } 443 if (getcwd(curdir, MAXPATHLEN) == NULL) { 444 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 445 exit(2); 446 } 447 ignorePWD = TRUE; 448 break; 449 case 'D': 450 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 451 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 452 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 453 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 454 break; 455 case 'I': 456 if (argvalue == NULL) goto noarg; 457 Parse_AddIncludeDir(argvalue); 458 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 459 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 460 break; 461 case 'J': 462 if (argvalue == NULL) goto noarg; 463 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 464 (void)fprintf(stderr, 465 "%s: internal error -- J option malformed (%s)\n", 466 progname, argvalue); 467 usage(); 468 } 469 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 470 (fcntl(jp_1, F_GETFD, 0) < 0)) { 471 #if 0 472 (void)fprintf(stderr, 473 "%s: ###### warning -- J descriptors were closed!\n", 474 progname); 475 exit(2); 476 #endif 477 jp_0 = -1; 478 jp_1 = -1; 479 compatMake = TRUE; 480 } else { 481 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 482 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 483 jobServer = TRUE; 484 } 485 break; 486 case 'N': 487 noExecute = TRUE; 488 noRecursiveExecute = TRUE; 489 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 490 break; 491 case 'S': 492 keepgoing = FALSE; 493 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 494 break; 495 case 'T': 496 if (argvalue == NULL) goto noarg; 497 tracefile = bmake_strdup(argvalue); 498 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 499 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 500 break; 501 case 'V': 502 if (argvalue == NULL) goto noarg; 503 printVars = TRUE; 504 (void)Lst_AtEnd(variables, argvalue); 505 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 506 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 507 break; 508 case 'W': 509 parseWarnFatal = TRUE; 510 break; 511 case 'X': 512 varNoExportEnv = TRUE; 513 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 514 break; 515 case 'd': 516 if (argvalue == NULL) goto noarg; 517 /* If '-d-opts' don't pass to children */ 518 if (argvalue[0] == '-') 519 argvalue++; 520 else { 521 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 522 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 523 } 524 parse_debug_options(argvalue); 525 break; 526 case 'e': 527 checkEnvFirst = TRUE; 528 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 529 break; 530 case 'f': 531 if (argvalue == NULL) goto noarg; 532 (void)Lst_AtEnd(makefiles, argvalue); 533 break; 534 case 'i': 535 ignoreErrors = TRUE; 536 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 537 break; 538 case 'j': 539 if (argvalue == NULL) goto noarg; 540 forceJobs = TRUE; 541 maxJobs = strtol(argvalue, &p, 0); 542 if (*p != '\0' || maxJobs < 1) { 543 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 544 progname); 545 exit(1); 546 } 547 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 548 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 549 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 550 maxJobTokens = maxJobs; 551 break; 552 case 'k': 553 keepgoing = TRUE; 554 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 555 break; 556 case 'm': 557 if (argvalue == NULL) goto noarg; 558 /* look for magic parent directory search string */ 559 if (strncmp(".../", argvalue, 4) == 0) { 560 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 561 found_path, sizeof(found_path))) 562 break; /* nothing doing */ 563 (void)Dir_AddDir(sysIncPath, found_path); 564 } else { 565 (void)Dir_AddDir(sysIncPath, argvalue); 566 } 567 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 568 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 569 break; 570 case 'n': 571 noExecute = TRUE; 572 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 573 break; 574 case 'q': 575 queryFlag = TRUE; 576 /* Kind of nonsensical, wot? */ 577 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 578 break; 579 case 'r': 580 noBuiltins = TRUE; 581 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 582 break; 583 case 's': 584 beSilent = TRUE; 585 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 586 break; 587 case 't': 588 touchFlag = TRUE; 589 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 590 break; 591 case 'w': 592 enterFlag = TRUE; 593 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 594 break; 595 case '-': 596 dashDash = TRUE; 597 break; 598 default: 599 case '?': 600 usage(); 601 } 602 argv += arginc; 603 argc -= arginc; 604 } 605 606 oldVars = TRUE; 607 608 /* 609 * See if the rest of the arguments are variable assignments and 610 * perform them if so. Else take them to be targets and stuff them 611 * on the end of the "create" list. 612 */ 613 for (; argc > 1; ++argv, --argc) 614 if (Parse_IsVar(argv[1])) { 615 Parse_DoVar(argv[1], VAR_CMD); 616 } else { 617 if (!*argv[1]) 618 Punt("illegal (null) argument."); 619 if (*argv[1] == '-' && !dashDash) 620 goto rearg; 621 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 622 } 623 624 return; 625 noarg: 626 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 627 progname, c); 628 usage(); 629 } 630 631 /*- 632 * Main_ParseArgLine -- 633 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 634 * is encountered and by main() when reading the .MAKEFLAGS envariable. 635 * Takes a line of arguments and breaks it into its 636 * component words and passes those words and the number of them to the 637 * MainParseArgs function. 638 * The line should have all its leading whitespace removed. 639 * 640 * Input: 641 * line Line to fracture 642 * 643 * Results: 644 * None 645 * 646 * Side Effects: 647 * Only those that come from the various arguments. 648 */ 649 void 650 Main_ParseArgLine(const char *line) 651 { 652 char **argv; /* Manufactured argument vector */ 653 int argc; /* Number of arguments in argv */ 654 char *args; /* Space used by the args */ 655 char *buf, *p1; 656 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 657 size_t len; 658 659 if (line == NULL) 660 return; 661 for (; *line == ' '; ++line) 662 continue; 663 if (!*line) 664 return; 665 666 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 667 (void)snprintf(buf, len, "%s %s", argv0, line); 668 if (p1) 669 free(p1); 670 671 argv = brk_string(buf, &argc, TRUE, &args); 672 if (argv == NULL) { 673 Error("Unterminated quoted string [%s]", buf); 674 free(buf); 675 return; 676 } 677 free(buf); 678 MainParseArgs(argc, argv); 679 680 free(args); 681 free(argv); 682 } 683 684 Boolean 685 Main_SetObjdir(const char *path) 686 { 687 struct stat sb; 688 char *p = NULL; 689 char buf[MAXPATHLEN + 1]; 690 Boolean rc = FALSE; 691 692 /* expand variable substitutions */ 693 if (strchr(path, '$') != 0) { 694 snprintf(buf, MAXPATHLEN, "%s", path); 695 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 696 } 697 698 if (path[0] != '/') { 699 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 700 path = buf; 701 } 702 703 /* look for the directory and try to chdir there */ 704 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 705 if (chdir(path)) { 706 (void)fprintf(stderr, "make warning: %s: %s.\n", 707 path, strerror(errno)); 708 } else { 709 strncpy(objdir, path, MAXPATHLEN); 710 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 711 setenv("PWD", objdir, 1); 712 Dir_InitDot(); 713 rc = TRUE; 714 if (enterFlag && strcmp(objdir, curdir) != 0) 715 enterFlagObj = TRUE; 716 } 717 } 718 719 if (p) 720 free(p); 721 return rc; 722 } 723 724 /*- 725 * ReadAllMakefiles -- 726 * wrapper around ReadMakefile() to read all. 727 * 728 * Results: 729 * TRUE if ok, FALSE on error 730 */ 731 static int 732 ReadAllMakefiles(const void *p, const void *q) 733 { 734 return (ReadMakefile(p, q) == 0); 735 } 736 737 int 738 str2Lst_Append(Lst lp, char *str, const char *sep) 739 { 740 char *cp; 741 int n; 742 743 if (!sep) 744 sep = " \t"; 745 746 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 747 (void)Lst_AtEnd(lp, cp); 748 n++; 749 } 750 return (n); 751 } 752 753 #ifdef SIGINFO 754 /*ARGSUSED*/ 755 static void 756 siginfo(int signo MAKE_ATTR_UNUSED) 757 { 758 char dir[MAXPATHLEN]; 759 char str[2 * MAXPATHLEN]; 760 int len; 761 if (getcwd(dir, sizeof(dir)) == NULL) 762 return; 763 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 764 if (len > 0) 765 (void)write(STDERR_FILENO, str, (size_t)len); 766 } 767 #endif 768 769 /* 770 * Allow makefiles some control over the mode we run in. 771 */ 772 void 773 MakeMode(const char *mode) 774 { 775 char *mp = NULL; 776 777 if (!mode) 778 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 779 780 if (mode && *mode) { 781 if (strstr(mode, "compat")) { 782 compatMake = TRUE; 783 forceJobs = FALSE; 784 } 785 #if USE_META 786 if (strstr(mode, "meta")) 787 meta_mode_init(mode); 788 #endif 789 } 790 if (mp) 791 free(mp); 792 } 793 794 /*- 795 * main -- 796 * The main function, for obvious reasons. Initializes variables 797 * and a few modules, then parses the arguments give it in the 798 * environment and on the command line. Reads the system makefile 799 * followed by either Makefile, makefile or the file given by the 800 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 801 * flags it has received by then uses either the Make or the Compat 802 * module to create the initial list of targets. 803 * 804 * Results: 805 * If -q was given, exits -1 if anything was out-of-date. Else it exits 806 * 0. 807 * 808 * Side Effects: 809 * The program exits when done. Targets are created. etc. etc. etc. 810 */ 811 int 812 main(int argc, char **argv) 813 { 814 Lst targs; /* target nodes to create -- passed to Make_Init */ 815 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 816 struct stat sb, sa; 817 char *p1, *path; 818 char mdpath[MAXPATHLEN]; 819 const char *machine = getenv("MACHINE"); 820 const char *machine_arch = getenv("MACHINE_ARCH"); 821 char *syspath = getenv("MAKESYSPATH"); 822 Lst sysMkPath; /* Path of sys.mk */ 823 char *cp = NULL, *start; 824 /* avoid faults on read-only strings */ 825 static char defsyspath[] = _PATH_DEFSYSPATH; 826 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 827 struct timeval rightnow; /* to initialize random seed */ 828 struct utsname utsname; 829 830 /* default to writing debug to stderr */ 831 debug_file = stderr; 832 833 #ifdef SIGINFO 834 (void)bmake_signal(SIGINFO, siginfo); 835 #endif 836 /* 837 * Set the seed to produce a different random sequence 838 * on each program execution. 839 */ 840 gettimeofday(&rightnow, NULL); 841 srandom(rightnow.tv_sec + rightnow.tv_usec); 842 843 if ((progname = strrchr(argv[0], '/')) != NULL) 844 progname++; 845 else 846 progname = argv[0]; 847 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 848 /* 849 * get rid of resource limit on file descriptors 850 */ 851 { 852 struct rlimit rl; 853 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 854 rl.rlim_cur != rl.rlim_max) { 855 rl.rlim_cur = rl.rlim_max; 856 (void)setrlimit(RLIMIT_NOFILE, &rl); 857 } 858 } 859 #endif 860 861 if (uname(&utsname) == -1) { 862 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 863 strerror(errno)); 864 exit(2); 865 } 866 867 /* 868 * Get the name of this type of MACHINE from utsname 869 * so we can share an executable for similar machines. 870 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 871 * 872 * Note that both MACHINE and MACHINE_ARCH are decided at 873 * run-time. 874 */ 875 if (!machine) { 876 #ifdef MAKE_NATIVE 877 machine = utsname.machine; 878 #else 879 #ifdef MAKE_MACHINE 880 machine = MAKE_MACHINE; 881 #else 882 machine = "unknown"; 883 #endif 884 #endif 885 } 886 887 if (!machine_arch) { 888 #ifdef MAKE_NATIVE 889 static char machine_arch_buf[sizeof(utsname.machine)]; 890 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 891 size_t len = sizeof(machine_arch_buf); 892 893 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 894 &len, NULL, 0) < 0) { 895 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 896 strerror(errno)); 897 exit(2); 898 } 899 900 machine_arch = machine_arch_buf; 901 #else 902 #ifndef MACHINE_ARCH 903 #ifdef MAKE_MACHINE_ARCH 904 machine_arch = MAKE_MACHINE_ARCH; 905 #else 906 machine_arch = "unknown"; 907 #endif 908 #else 909 machine_arch = MACHINE_ARCH; 910 #endif 911 #endif 912 } 913 914 myPid = getpid(); /* remember this for vFork() */ 915 916 /* 917 * Just in case MAKEOBJDIR wants us to do something tricky. 918 */ 919 Var_Init(); /* Initialize the lists of variables for 920 * parsing arguments */ 921 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 922 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 923 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 924 #ifdef MAKE_VERSION 925 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 926 #endif 927 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 928 /* 929 * This is the traditional preference for makefiles. 930 */ 931 #ifndef MAKEFILE_PREFERENCE_LIST 932 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 933 #endif 934 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 935 VAR_GLOBAL, 0); 936 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 937 938 create = Lst_Init(FALSE); 939 makefiles = Lst_Init(FALSE); 940 printVars = FALSE; 941 debugVflag = FALSE; 942 variables = Lst_Init(FALSE); 943 beSilent = FALSE; /* Print commands as executed */ 944 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 945 noExecute = FALSE; /* Execute all commands */ 946 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 947 keepgoing = FALSE; /* Stop on error */ 948 allPrecious = FALSE; /* Remove targets when interrupted */ 949 queryFlag = FALSE; /* This is not just a check-run */ 950 noBuiltins = FALSE; /* Read the built-in rules */ 951 touchFlag = FALSE; /* Actually update targets */ 952 debug = 0; /* No debug verbosity, please. */ 953 jobsRunning = FALSE; 954 955 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 956 maxJobTokens = maxJobs; 957 compatMake = FALSE; /* No compat mode */ 958 ignorePWD = FALSE; 959 960 /* 961 * Initialize the parsing, directory and variable modules to prepare 962 * for the reading of inclusion paths and variable settings on the 963 * command line 964 */ 965 966 /* 967 * Initialize various variables. 968 * MAKE also gets this name, for compatibility 969 * .MAKEFLAGS gets set to the empty string just in case. 970 * MFLAGS also gets initialized empty, for compatibility. 971 */ 972 Parse_Init(); 973 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 974 /* 975 * Leave alone if it is an absolute path, or if it does 976 * not contain a '/' in which case we need to find it in 977 * the path, like execvp(3) and the shells do. 978 */ 979 p1 = argv[0]; 980 } else { 981 /* 982 * A relative path, canonicalize it. 983 */ 984 p1 = realpath(argv[0], mdpath); 985 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 986 p1 = argv[0]; /* realpath failed */ 987 } 988 } 989 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 990 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 991 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 992 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 993 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 994 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 995 /* some makefiles need to know this */ 996 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 997 998 /* 999 * Set some other useful macros 1000 */ 1001 { 1002 char tmp[64], *ep; 1003 1004 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1005 if (makelevel < 0) 1006 makelevel = 0; 1007 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1008 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1009 snprintf(tmp, sizeof(tmp), "%u", myPid); 1010 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1011 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1012 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1013 } 1014 if (makelevel > 0) { 1015 char pn[1024]; 1016 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1017 progname = bmake_strdup(pn); 1018 } 1019 1020 #ifdef USE_META 1021 meta_init(); 1022 #endif 1023 /* 1024 * First snag any flags out of the MAKE environment variable. 1025 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1026 * in a different format). 1027 */ 1028 #ifdef POSIX 1029 p1 = explode(getenv("MAKEFLAGS")); 1030 Main_ParseArgLine(p1); 1031 free(p1); 1032 #else 1033 Main_ParseArgLine(getenv("MAKE")); 1034 #endif 1035 1036 /* 1037 * Find where we are (now). 1038 * We take care of PWD for the automounter below... 1039 */ 1040 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1041 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1042 progname, strerror(errno)); 1043 exit(2); 1044 } 1045 1046 MainParseArgs(argc, argv); 1047 1048 if (enterFlag) 1049 printf("%s: Entering directory `%s'\n", progname, curdir); 1050 1051 /* 1052 * Verify that cwd is sane. 1053 */ 1054 if (stat(curdir, &sa) == -1) { 1055 (void)fprintf(stderr, "%s: %s: %s.\n", 1056 progname, curdir, strerror(errno)); 1057 exit(2); 1058 } 1059 1060 /* 1061 * All this code is so that we know where we are when we start up 1062 * on a different machine with pmake. 1063 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1064 * since the value of curdir can vary depending on how we got 1065 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1066 * or via subdir.mk in which case its likely a shell which does 1067 * not provide it. 1068 * So, to stop it breaking this case only, we ignore PWD if 1069 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1070 */ 1071 #ifndef NO_PWD_OVERRIDE 1072 if (!ignorePWD) { 1073 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1074 1075 if ((pwd = getenv("PWD")) != NULL && 1076 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1077 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1078 VAR_CMD, &ptmp2); 1079 1080 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1081 if (stat(pwd, &sb) == 0 && 1082 sa.st_ino == sb.st_ino && 1083 sa.st_dev == sb.st_dev) 1084 (void)strncpy(curdir, pwd, MAXPATHLEN); 1085 } 1086 } 1087 free(ptmp1); 1088 free(ptmp2); 1089 } 1090 #endif 1091 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1092 1093 /* 1094 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1095 * MAKEOBJDIR is set in the environment, try only that value 1096 * and fall back to .CURDIR if it does not exist. 1097 * 1098 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1099 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1100 * of these paths exist, just use .CURDIR. 1101 */ 1102 Dir_Init(curdir); 1103 (void)Main_SetObjdir(curdir); 1104 1105 if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) { 1106 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1107 (void)Main_SetObjdir(mdpath); 1108 free(p1); 1109 } else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) { 1110 (void)Main_SetObjdir(path); 1111 free(p1); 1112 } else { 1113 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1114 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1115 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1116 _PATH_OBJDIRPREFIX, curdir); 1117 (void)Main_SetObjdir(mdpath); 1118 } 1119 } 1120 1121 /* 1122 * Be compatible if user did not specify -j and did not explicitly 1123 * turned compatibility on 1124 */ 1125 if (!compatMake && !forceJobs) { 1126 compatMake = TRUE; 1127 } 1128 1129 /* 1130 * Initialize archive, target and suffix modules in preparation for 1131 * parsing the makefile(s) 1132 */ 1133 Arch_Init(); 1134 Targ_Init(); 1135 Suff_Init(); 1136 Trace_Init(tracefile); 1137 1138 DEFAULT = NULL; 1139 (void)time(&now); 1140 1141 Trace_Log(MAKESTART, NULL); 1142 1143 /* 1144 * Set up the .TARGETS variable to contain the list of targets to be 1145 * created. If none specified, make the variable empty -- the parser 1146 * will fill the thing in with the default or .MAIN target. 1147 */ 1148 if (!Lst_IsEmpty(create)) { 1149 LstNode ln; 1150 1151 for (ln = Lst_First(create); ln != NULL; 1152 ln = Lst_Succ(ln)) { 1153 char *name = (char *)Lst_Datum(ln); 1154 1155 Var_Append(".TARGETS", name, VAR_GLOBAL); 1156 } 1157 } else 1158 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1159 1160 1161 /* 1162 * If no user-supplied system path was given (through the -m option) 1163 * add the directories from the DEFSYSPATH (more than one may be given 1164 * as dir1:...:dirn) to the system include path. 1165 */ 1166 if (syspath == NULL || *syspath == '\0') 1167 syspath = defsyspath; 1168 else 1169 syspath = bmake_strdup(syspath); 1170 1171 for (start = syspath; *start != '\0'; start = cp) { 1172 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1173 continue; 1174 if (*cp == ':') { 1175 *cp++ = '\0'; 1176 } 1177 /* look for magic parent directory search string */ 1178 if (strncmp(".../", start, 4) != 0) { 1179 (void)Dir_AddDir(defIncPath, start); 1180 } else { 1181 if (Dir_FindHereOrAbove(curdir, start+4, 1182 found_path, sizeof(found_path))) { 1183 (void)Dir_AddDir(defIncPath, found_path); 1184 } 1185 } 1186 } 1187 if (syspath != defsyspath) 1188 free(syspath); 1189 1190 /* 1191 * Read in the built-in rules first, followed by the specified 1192 * makefile, if it was (makefile != NULL), or the default 1193 * makefile and Makefile, in that order, if it wasn't. 1194 */ 1195 if (!noBuiltins) { 1196 LstNode ln; 1197 1198 sysMkPath = Lst_Init(FALSE); 1199 Dir_Expand(_PATH_DEFSYSMK, 1200 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1201 sysMkPath); 1202 if (Lst_IsEmpty(sysMkPath)) 1203 Fatal("%s: no system rules (%s).", progname, 1204 _PATH_DEFSYSMK); 1205 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1206 if (ln == NULL) 1207 Fatal("%s: cannot open %s.", progname, 1208 (char *)Lst_Datum(ln)); 1209 } 1210 1211 if (!Lst_IsEmpty(makefiles)) { 1212 LstNode ln; 1213 1214 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1215 if (ln != NULL) 1216 Fatal("%s: cannot open %s.", progname, 1217 (char *)Lst_Datum(ln)); 1218 } else { 1219 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1220 VAR_CMD, 0); 1221 if (p1) { 1222 (void)str2Lst_Append(makefiles, p1, NULL); 1223 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1224 free(p1); 1225 } 1226 } 1227 1228 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1229 if (!noBuiltins || !printVars) { 1230 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1231 VAR_CMD, 0); 1232 doing_depend = TRUE; 1233 (void)ReadMakefile(makeDependfile, NULL); 1234 doing_depend = FALSE; 1235 } 1236 1237 if (enterFlagObj) 1238 printf("%s: Entering directory `%s'\n", progname, objdir); 1239 1240 MakeMode(NULL); 1241 1242 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1243 if (p1) 1244 free(p1); 1245 1246 if (!compatMake) 1247 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1248 if (DEBUG(JOB)) 1249 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1250 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1251 1252 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1253 1254 1255 /* 1256 * For compatibility, look at the directories in the VPATH variable 1257 * and add them to the search path, if the variable is defined. The 1258 * variable's value is in the same format as the PATH envariable, i.e. 1259 * <directory>:<directory>:<directory>... 1260 */ 1261 if (Var_Exists("VPATH", VAR_CMD)) { 1262 char *vpath, savec; 1263 /* 1264 * GCC stores string constants in read-only memory, but 1265 * Var_Subst will want to write this thing, so store it 1266 * in an array 1267 */ 1268 static char VPATH[] = "${VPATH}"; 1269 1270 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1271 path = vpath; 1272 do { 1273 /* skip to end of directory */ 1274 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1275 continue; 1276 /* Save terminator character so know when to stop */ 1277 savec = *cp; 1278 *cp = '\0'; 1279 /* Add directory to search path */ 1280 (void)Dir_AddDir(dirSearchPath, path); 1281 *cp = savec; 1282 path = cp + 1; 1283 } while (savec == ':'); 1284 free(vpath); 1285 } 1286 1287 /* 1288 * Now that all search paths have been read for suffixes et al, it's 1289 * time to add the default search path to their lists... 1290 */ 1291 Suff_DoPaths(); 1292 1293 /* 1294 * Propagate attributes through :: dependency lists. 1295 */ 1296 Targ_Propagate(); 1297 1298 /* print the initial graph, if the user requested it */ 1299 if (DEBUG(GRAPH1)) 1300 Targ_PrintGraph(1); 1301 1302 /* print the values of any variables requested by the user */ 1303 if (printVars) { 1304 LstNode ln; 1305 Boolean expandVars; 1306 1307 if (debugVflag) 1308 expandVars = FALSE; 1309 else 1310 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1311 for (ln = Lst_First(variables); ln != NULL; 1312 ln = Lst_Succ(ln)) { 1313 char *var = (char *)Lst_Datum(ln); 1314 char *value; 1315 1316 if (strchr(var, '$')) { 1317 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1318 } else if (expandVars) { 1319 char tmp[128]; 1320 1321 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1322 Fatal("%s: variable name too big: %s", 1323 progname, var); 1324 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1325 } else { 1326 value = Var_Value(var, VAR_GLOBAL, &p1); 1327 } 1328 printf("%s\n", value ? value : ""); 1329 if (p1) 1330 free(p1); 1331 } 1332 } else { 1333 /* 1334 * Have now read the entire graph and need to make a list of 1335 * targets to create. If none was given on the command line, 1336 * we consult the parsing module to find the main target(s) 1337 * to create. 1338 */ 1339 if (Lst_IsEmpty(create)) 1340 targs = Parse_MainName(); 1341 else 1342 targs = Targ_FindList(create, TARG_CREATE); 1343 1344 if (!compatMake) { 1345 /* 1346 * Initialize job module before traversing the graph 1347 * now that any .BEGIN and .END targets have been read. 1348 * This is done only if the -q flag wasn't given 1349 * (to prevent the .BEGIN from being executed should 1350 * it exist). 1351 */ 1352 if (!queryFlag) { 1353 Job_Init(); 1354 jobsRunning = TRUE; 1355 } 1356 1357 /* Traverse the graph, checking on all the targets */ 1358 outOfDate = Make_Run(targs); 1359 } else { 1360 /* 1361 * Compat_Init will take care of creating all the 1362 * targets as well as initializing the module. 1363 */ 1364 Compat_Run(targs); 1365 } 1366 } 1367 1368 #ifdef CLEANUP 1369 Lst_Destroy(targs, NULL); 1370 Lst_Destroy(variables, NULL); 1371 Lst_Destroy(makefiles, NULL); 1372 Lst_Destroy(create, (FreeProc *)free); 1373 #endif 1374 1375 /* print the graph now it's been processed if the user requested it */ 1376 if (DEBUG(GRAPH2)) 1377 Targ_PrintGraph(2); 1378 1379 Trace_Log(MAKEEND, 0); 1380 1381 if (enterFlagObj) 1382 printf("%s: Leaving directory `%s'\n", progname, objdir); 1383 if (enterFlag) 1384 printf("%s: Leaving directory `%s'\n", progname, curdir); 1385 1386 Suff_End(); 1387 Targ_End(); 1388 Arch_End(); 1389 Var_End(); 1390 Parse_End(); 1391 Dir_End(); 1392 Job_End(); 1393 Trace_End(); 1394 1395 return outOfDate ? 1 : 0; 1396 } 1397 1398 /*- 1399 * ReadMakefile -- 1400 * Open and parse the given makefile. 1401 * 1402 * Results: 1403 * 0 if ok. -1 if couldn't open file. 1404 * 1405 * Side Effects: 1406 * lots 1407 */ 1408 static int 1409 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1410 { 1411 const char *fname = p; /* makefile to read */ 1412 int fd; 1413 size_t len = MAXPATHLEN; 1414 char *name, *path = bmake_malloc(len); 1415 1416 if (!strcmp(fname, "-")) { 1417 Parse_File(NULL /*stdin*/, -1); 1418 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1419 } else { 1420 /* if we've chdir'd, rebuild the path name */ 1421 if (strcmp(curdir, objdir) && *fname != '/') { 1422 size_t plen = strlen(curdir) + strlen(fname) + 2; 1423 if (len < plen) 1424 path = bmake_realloc(path, len = 2 * plen); 1425 1426 (void)snprintf(path, len, "%s/%s", curdir, fname); 1427 fd = open(path, O_RDONLY); 1428 if (fd != -1) { 1429 fname = path; 1430 goto found; 1431 } 1432 1433 /* If curdir failed, try objdir (ala .depend) */ 1434 plen = strlen(objdir) + strlen(fname) + 2; 1435 if (len < plen) 1436 path = bmake_realloc(path, len = 2 * plen); 1437 (void)snprintf(path, len, "%s/%s", objdir, fname); 1438 fd = open(path, O_RDONLY); 1439 if (fd != -1) { 1440 fname = path; 1441 goto found; 1442 } 1443 } else { 1444 fd = open(fname, O_RDONLY); 1445 if (fd != -1) 1446 goto found; 1447 } 1448 /* look in -I and system include directories. */ 1449 name = Dir_FindFile(fname, parseIncPath); 1450 if (!name) 1451 name = Dir_FindFile(fname, 1452 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1453 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1454 if (name) 1455 free(name); 1456 free(path); 1457 return(-1); 1458 } 1459 fname = name; 1460 /* 1461 * set the MAKEFILE variable desired by System V fans -- the 1462 * placement of the setting here means it gets set to the last 1463 * makefile specified, as it is set by SysV make. 1464 */ 1465 found: 1466 if (!doing_depend) 1467 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1468 Parse_File(fname, fd); 1469 } 1470 free(path); 1471 return(0); 1472 } 1473 1474 1475 1476 /*- 1477 * Cmd_Exec -- 1478 * Execute the command in cmd, and return the output of that command 1479 * in a string. 1480 * 1481 * Results: 1482 * A string containing the output of the command, or the empty string 1483 * If errnum is not NULL, it contains the reason for the command failure 1484 * 1485 * Side Effects: 1486 * The string must be freed by the caller. 1487 */ 1488 char * 1489 Cmd_Exec(const char *cmd, const char **errnum) 1490 { 1491 const char *args[4]; /* Args for invoking the shell */ 1492 int fds[2]; /* Pipe streams */ 1493 int cpid; /* Child PID */ 1494 int pid; /* PID from wait() */ 1495 char *res; /* result */ 1496 int status; /* command exit status */ 1497 Buffer buf; /* buffer to store the result */ 1498 char *cp; 1499 int cc; /* bytes read, or -1 */ 1500 int savederr; /* saved errno */ 1501 1502 1503 *errnum = NULL; 1504 1505 if (!shellName) 1506 Shell_Init(); 1507 /* 1508 * Set up arguments for shell 1509 */ 1510 args[0] = shellName; 1511 args[1] = "-c"; 1512 args[2] = cmd; 1513 args[3] = NULL; 1514 1515 /* 1516 * Open a pipe for fetching its output 1517 */ 1518 if (pipe(fds) == -1) { 1519 *errnum = "Couldn't create pipe for \"%s\""; 1520 goto bad; 1521 } 1522 1523 /* 1524 * Fork 1525 */ 1526 switch (cpid = vFork()) { 1527 case 0: 1528 /* 1529 * Close input side of pipe 1530 */ 1531 (void)close(fds[0]); 1532 1533 /* 1534 * Duplicate the output stream to the shell's output, then 1535 * shut the extra thing down. Note we don't fetch the error 1536 * stream...why not? Why? 1537 */ 1538 (void)dup2(fds[1], 1); 1539 (void)close(fds[1]); 1540 1541 Var_ExportVars(); 1542 1543 (void)execv(shellPath, UNCONST(args)); 1544 _exit(1); 1545 /*NOTREACHED*/ 1546 1547 case -1: 1548 *errnum = "Couldn't exec \"%s\""; 1549 goto bad; 1550 1551 default: 1552 /* 1553 * No need for the writing half 1554 */ 1555 (void)close(fds[1]); 1556 1557 savederr = 0; 1558 Buf_Init(&buf, 0); 1559 1560 do { 1561 char result[BUFSIZ]; 1562 cc = read(fds[0], result, sizeof(result)); 1563 if (cc > 0) 1564 Buf_AddBytes(&buf, cc, result); 1565 } 1566 while (cc > 0 || (cc == -1 && errno == EINTR)); 1567 if (cc == -1) 1568 savederr = errno; 1569 1570 /* 1571 * Close the input side of the pipe. 1572 */ 1573 (void)close(fds[0]); 1574 1575 /* 1576 * Wait for the process to exit. 1577 */ 1578 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1579 JobReapChild(pid, status, FALSE); 1580 continue; 1581 } 1582 cc = Buf_Size(&buf); 1583 res = Buf_Destroy(&buf, FALSE); 1584 1585 if (savederr != 0) 1586 *errnum = "Couldn't read shell's output for \"%s\""; 1587 1588 if (WIFSIGNALED(status)) 1589 *errnum = "\"%s\" exited on a signal"; 1590 else if (WEXITSTATUS(status) != 0) 1591 *errnum = "\"%s\" returned non-zero status"; 1592 1593 /* 1594 * Null-terminate the result, convert newlines to spaces and 1595 * install it in the variable. 1596 */ 1597 res[cc] = '\0'; 1598 cp = &res[cc]; 1599 1600 if (cc > 0 && *--cp == '\n') { 1601 /* 1602 * A final newline is just stripped 1603 */ 1604 *cp-- = '\0'; 1605 } 1606 while (cp >= res) { 1607 if (*cp == '\n') { 1608 *cp = ' '; 1609 } 1610 cp--; 1611 } 1612 break; 1613 } 1614 return res; 1615 bad: 1616 res = bmake_malloc(1); 1617 *res = '\0'; 1618 return res; 1619 } 1620 1621 /*- 1622 * Error -- 1623 * Print an error message given its format. 1624 * 1625 * Results: 1626 * None. 1627 * 1628 * Side Effects: 1629 * The message is printed. 1630 */ 1631 /* VARARGS */ 1632 void 1633 Error(const char *fmt, ...) 1634 { 1635 va_list ap; 1636 FILE *err_file; 1637 1638 err_file = debug_file; 1639 if (err_file == stdout) 1640 err_file = stderr; 1641 (void)fflush(stdout); 1642 for (;;) { 1643 va_start(ap, fmt); 1644 fprintf(err_file, "%s: ", progname); 1645 (void)vfprintf(err_file, fmt, ap); 1646 va_end(ap); 1647 (void)fprintf(err_file, "\n"); 1648 (void)fflush(err_file); 1649 if (err_file == stderr) 1650 break; 1651 err_file = stderr; 1652 } 1653 } 1654 1655 /*- 1656 * Fatal -- 1657 * Produce a Fatal error message. If jobs are running, waits for them 1658 * to finish. 1659 * 1660 * Results: 1661 * None 1662 * 1663 * Side Effects: 1664 * The program exits 1665 */ 1666 /* VARARGS */ 1667 void 1668 Fatal(const char *fmt, ...) 1669 { 1670 va_list ap; 1671 1672 va_start(ap, fmt); 1673 if (jobsRunning) 1674 Job_Wait(); 1675 1676 (void)fflush(stdout); 1677 (void)vfprintf(stderr, fmt, ap); 1678 va_end(ap); 1679 (void)fprintf(stderr, "\n"); 1680 (void)fflush(stderr); 1681 1682 PrintOnError(NULL, NULL); 1683 1684 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1685 Targ_PrintGraph(2); 1686 Trace_Log(MAKEERROR, 0); 1687 exit(2); /* Not 1 so -q can distinguish error */ 1688 } 1689 1690 /* 1691 * Punt -- 1692 * Major exception once jobs are being created. Kills all jobs, prints 1693 * a message and exits. 1694 * 1695 * Results: 1696 * None 1697 * 1698 * Side Effects: 1699 * All children are killed indiscriminately and the program Lib_Exits 1700 */ 1701 /* VARARGS */ 1702 void 1703 Punt(const char *fmt, ...) 1704 { 1705 va_list ap; 1706 1707 va_start(ap, fmt); 1708 (void)fflush(stdout); 1709 (void)fprintf(stderr, "%s: ", progname); 1710 (void)vfprintf(stderr, fmt, ap); 1711 va_end(ap); 1712 (void)fprintf(stderr, "\n"); 1713 (void)fflush(stderr); 1714 1715 PrintOnError(NULL, NULL); 1716 1717 DieHorribly(); 1718 } 1719 1720 /*- 1721 * DieHorribly -- 1722 * Exit without giving a message. 1723 * 1724 * Results: 1725 * None 1726 * 1727 * Side Effects: 1728 * A big one... 1729 */ 1730 void 1731 DieHorribly(void) 1732 { 1733 if (jobsRunning) 1734 Job_AbortAll(); 1735 if (DEBUG(GRAPH2)) 1736 Targ_PrintGraph(2); 1737 Trace_Log(MAKEERROR, 0); 1738 exit(2); /* Not 1, so -q can distinguish error */ 1739 } 1740 1741 /* 1742 * Finish -- 1743 * Called when aborting due to errors in child shell to signal 1744 * abnormal exit. 1745 * 1746 * Results: 1747 * None 1748 * 1749 * Side Effects: 1750 * The program exits 1751 */ 1752 void 1753 Finish(int errors) 1754 /* number of errors encountered in Make_Make */ 1755 { 1756 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1757 } 1758 1759 /* 1760 * eunlink -- 1761 * Remove a file carefully, avoiding directories. 1762 */ 1763 int 1764 eunlink(const char *file) 1765 { 1766 struct stat st; 1767 1768 if (lstat(file, &st) == -1) 1769 return -1; 1770 1771 if (S_ISDIR(st.st_mode)) { 1772 errno = EISDIR; 1773 return -1; 1774 } 1775 return unlink(file); 1776 } 1777 1778 /* 1779 * execError -- 1780 * Print why exec failed, avoiding stdio. 1781 */ 1782 void 1783 execError(const char *af, const char *av) 1784 { 1785 #ifdef USE_IOVEC 1786 int i = 0; 1787 struct iovec iov[8]; 1788 #define IOADD(s) \ 1789 (void)(iov[i].iov_base = UNCONST(s), \ 1790 iov[i].iov_len = strlen(iov[i].iov_base), \ 1791 i++) 1792 #else 1793 #define IOADD(void)write(2, s, strlen(s)) 1794 #endif 1795 1796 IOADD(progname); 1797 IOADD(": "); 1798 IOADD(af); 1799 IOADD("("); 1800 IOADD(av); 1801 IOADD(") failed ("); 1802 IOADD(strerror(errno)); 1803 IOADD(")\n"); 1804 1805 #ifdef USE_IOVEC 1806 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1807 continue; 1808 #endif 1809 } 1810 1811 /* 1812 * usage -- 1813 * exit with usage message 1814 */ 1815 static void 1816 usage(void) 1817 { 1818 char *p; 1819 if ((p = strchr(progname, '[')) != NULL) 1820 *p = '\0'; 1821 1822 (void)fprintf(stderr, 1823 "usage: %s [-BeikNnqrstWwX] \n\ 1824 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1825 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1826 [-V variable] [variable=value] [target ...]\n", progname); 1827 exit(2); 1828 } 1829 1830 1831 int 1832 PrintAddr(void *a, void *b) 1833 { 1834 printf("%lx ", (unsigned long) a); 1835 return b ? 0 : 0; 1836 } 1837 1838 1839 1840 void 1841 PrintOnError(GNode *gn, const char *s) 1842 { 1843 static GNode *en = NULL; 1844 char tmp[64]; 1845 char *cp; 1846 1847 if (s) 1848 printf("%s", s); 1849 1850 printf("\n%s: stopped in %s\n", progname, curdir); 1851 1852 if (en) 1853 return; /* we've been here! */ 1854 if (gn) { 1855 /* 1856 * We can print this even if there is no .ERROR target. 1857 */ 1858 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1859 } 1860 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1861 sizeof(tmp) - 1); 1862 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1863 if (cp) { 1864 if (*cp) 1865 printf("%s", cp); 1866 free(cp); 1867 } 1868 /* 1869 * Finally, see if there is a .ERROR target, and run it if so. 1870 */ 1871 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1872 if (en) { 1873 en->type |= OP_SPECIAL; 1874 Compat_Make(en, en); 1875 } 1876 } 1877 1878 void 1879 Main_ExportMAKEFLAGS(Boolean first) 1880 { 1881 static int once = 1; 1882 char tmp[64]; 1883 char *s; 1884 1885 if (once != first) 1886 return; 1887 once = 0; 1888 1889 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1890 sizeof(tmp)); 1891 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1892 if (s && *s) { 1893 #ifdef POSIX 1894 setenv("MAKEFLAGS", s, 1); 1895 #else 1896 setenv("MAKE", s, 1); 1897 #endif 1898 } 1899 } 1900 1901 char * 1902 getTmpdir(void) 1903 { 1904 static char *tmpdir = NULL; 1905 1906 if (!tmpdir) { 1907 struct stat st; 1908 1909 /* 1910 * Honor $TMPDIR but only if it is valid. 1911 * Ensure it ends with /. 1912 */ 1913 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1914 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1915 free(tmpdir); 1916 tmpdir = bmake_strdup(_PATH_TMP); 1917 } 1918 } 1919 return tmpdir; 1920 } 1921 1922 /* 1923 * Create and open a temp file using "pattern". 1924 * If "fnamep" is provided set it to a copy of the filename created. 1925 * Otherwise unlink the file once open. 1926 */ 1927 int 1928 mkTempFile(const char *pattern, char **fnamep) 1929 { 1930 static char *tmpdir = NULL; 1931 char tfile[MAXPATHLEN]; 1932 int fd; 1933 1934 if (!pattern) 1935 pattern = TMPPAT; 1936 if (!tmpdir) 1937 tmpdir = getTmpdir(); 1938 if (pattern[0] == '/') { 1939 snprintf(tfile, sizeof(tfile), "%s", pattern); 1940 } else { 1941 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1942 } 1943 if ((fd = mkstemp(tfile)) < 0) 1944 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1945 if (fnamep) { 1946 *fnamep = bmake_strdup(tfile); 1947 } else { 1948 unlink(tfile); /* we just want the descriptor */ 1949 } 1950 return fd; 1951 } 1952 1953 1954 /* 1955 * Return a Boolean based on setting of a knob. 1956 * 1957 * If the knob is not set, the supplied default is the return value. 1958 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1959 * is FALSE, otherwise TRUE. 1960 */ 1961 Boolean 1962 getBoolean(const char *name, Boolean bf) 1963 { 1964 char tmp[64]; 1965 char *cp; 1966 1967 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1968 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1969 1970 if (cp) { 1971 switch(*cp) { 1972 case '\0': /* not set - the default wins */ 1973 break; 1974 case '0': 1975 case 'f': 1976 case 'n': 1977 bf = FALSE; 1978 break; 1979 case 'o': 1980 switch (cp[1]) { 1981 case 'f': 1982 bf = FALSE; 1983 break; 1984 default: 1985 bf = TRUE; 1986 break; 1987 } 1988 break; 1989 default: 1990 bf = TRUE; 1991 break; 1992 } 1993 free(cp); 1994 } 1995 } 1996 return (bf); 1997 } 1998
Indexes created Wed Sep 24 02:09:48 GMT 2025