main.c revision 1.255
1 /* $NetBSD: main.c,v 1.255 2017/01/31 06:54:23 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 1.255 2017/01/31 06:54:23 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 1.255 2017/01/31 06:54:23 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 <signal.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 #include <ctype.h> 134 135 #include "make.h" 136 #include "hash.h" 137 #include "dir.h" 138 #include "job.h" 139 #include "pathnames.h" 140 #include "trace.h" 141 142 #ifdef USE_IOVEC 143 #include <sys/uio.h> 144 #endif 145 146 #ifndef DEFMAXLOCAL 147 #define DEFMAXLOCAL DEFMAXJOBS 148 #endif /* DEFMAXLOCAL */ 149 150 Lst create; /* Targets to be made */ 151 time_t now; /* Time at start of make */ 152 GNode *DEFAULT; /* .DEFAULT node */ 153 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 154 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 155 156 static Boolean noBuiltins; /* -r flag */ 157 static Lst makefiles; /* ordered list of makefiles to read */ 158 static 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 free(p1); 669 670 argv = brk_string(buf, &argc, TRUE, &args); 671 if (argv == NULL) { 672 Error("Unterminated quoted string [%s]", buf); 673 free(buf); 674 return; 675 } 676 free(buf); 677 MainParseArgs(argc, argv); 678 679 free(args); 680 free(argv); 681 } 682 683 Boolean 684 Main_SetObjdir(const char *fmt, ...) 685 { 686 struct stat sb; 687 char *p, *path; 688 char buf[MAXPATHLEN + 1], pbuf[MAXPATHLEN + 1]; 689 Boolean rc = FALSE; 690 va_list ap; 691 692 va_start(ap, fmt); 693 vsnprintf(path = pbuf, MAXPATHLEN, fmt, ap); 694 va_end(ap); 695 696 /* expand variable substitutions */ 697 if (strchr(path, '$') != 0) { 698 snprintf(buf, MAXPATHLEN, "%s", path); 699 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, VARF_WANTRES); 700 } else 701 p = NULL; 702 703 if (path[0] != '/') { 704 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 705 path = buf; 706 } 707 708 /* look for the directory and try to chdir there */ 709 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 710 if (chdir(path)) { 711 (void)fprintf(stderr, "make warning: %s: %s.\n", 712 path, strerror(errno)); 713 } else { 714 strncpy(objdir, path, MAXPATHLEN); 715 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 716 setenv("PWD", objdir, 1); 717 Dir_InitDot(); 718 rc = TRUE; 719 if (enterFlag && strcmp(objdir, curdir) != 0) 720 enterFlagObj = TRUE; 721 } 722 } 723 724 free(p); 725 return rc; 726 } 727 728 static Boolean 729 Main_SetVarObjdir(const char *var, const char *suffix) 730 { 731 char *p1, *path; 732 if ((path = Var_Value(var, VAR_CMD, &p1)) == NULL) 733 return FALSE; 734 735 (void)Main_SetObjdir("%s%s", path, suffix); 736 free(p1); 737 return TRUE; 738 } 739 740 /*- 741 * ReadAllMakefiles -- 742 * wrapper around ReadMakefile() to read all. 743 * 744 * Results: 745 * TRUE if ok, FALSE on error 746 */ 747 static int 748 ReadAllMakefiles(const void *p, const void *q) 749 { 750 return (ReadMakefile(p, q) == 0); 751 } 752 753 int 754 str2Lst_Append(Lst lp, char *str, const char *sep) 755 { 756 char *cp; 757 int n; 758 759 if (!sep) 760 sep = " \t"; 761 762 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 763 (void)Lst_AtEnd(lp, cp); 764 n++; 765 } 766 return (n); 767 } 768 769 #ifdef SIGINFO 770 /*ARGSUSED*/ 771 static void 772 siginfo(int signo MAKE_ATTR_UNUSED) 773 { 774 char dir[MAXPATHLEN]; 775 char str[2 * MAXPATHLEN]; 776 int len; 777 if (getcwd(dir, sizeof(dir)) == NULL) 778 return; 779 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 780 if (len > 0) 781 (void)write(STDERR_FILENO, str, (size_t)len); 782 } 783 #endif 784 785 /* 786 * Allow makefiles some control over the mode we run in. 787 */ 788 void 789 MakeMode(const char *mode) 790 { 791 char *mp = NULL; 792 793 if (!mode) 794 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 795 VAR_GLOBAL, VARF_WANTRES); 796 797 if (mode && *mode) { 798 if (strstr(mode, "compat")) { 799 compatMake = TRUE; 800 forceJobs = FALSE; 801 } 802 #if USE_META 803 if (strstr(mode, "meta")) 804 meta_mode_init(mode); 805 #endif 806 } 807 808 free(mp); 809 } 810 811 /*- 812 * main -- 813 * The main function, for obvious reasons. Initializes variables 814 * and a few modules, then parses the arguments give it in the 815 * environment and on the command line. Reads the system makefile 816 * followed by either Makefile, makefile or the file given by the 817 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 818 * flags it has received by then uses either the Make or the Compat 819 * module to create the initial list of targets. 820 * 821 * Results: 822 * If -q was given, exits -1 if anything was out-of-date. Else it exits 823 * 0. 824 * 825 * Side Effects: 826 * The program exits when done. Targets are created. etc. etc. etc. 827 */ 828 int 829 main(int argc, char **argv) 830 { 831 Lst targs; /* target nodes to create -- passed to Make_Init */ 832 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 833 struct stat sb, sa; 834 char *p1, *path; 835 char mdpath[MAXPATHLEN]; 836 const char *machine = getenv("MACHINE"); 837 const char *machine_arch = getenv("MACHINE_ARCH"); 838 char *syspath = getenv("MAKESYSPATH"); 839 Lst sysMkPath; /* Path of sys.mk */ 840 char *cp = NULL, *start; 841 /* avoid faults on read-only strings */ 842 static char defsyspath[] = _PATH_DEFSYSPATH; 843 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 844 struct timeval rightnow; /* to initialize random seed */ 845 struct utsname utsname; 846 847 /* default to writing debug to stderr */ 848 debug_file = stderr; 849 850 #ifdef SIGINFO 851 (void)bmake_signal(SIGINFO, siginfo); 852 #endif 853 /* 854 * Set the seed to produce a different random sequence 855 * on each program execution. 856 */ 857 gettimeofday(&rightnow, NULL); 858 srandom(rightnow.tv_sec + rightnow.tv_usec); 859 860 if ((progname = strrchr(argv[0], '/')) != NULL) 861 progname++; 862 else 863 progname = argv[0]; 864 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 865 /* 866 * get rid of resource limit on file descriptors 867 */ 868 { 869 struct rlimit rl; 870 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 871 rl.rlim_cur != rl.rlim_max) { 872 rl.rlim_cur = rl.rlim_max; 873 (void)setrlimit(RLIMIT_NOFILE, &rl); 874 } 875 } 876 #endif 877 878 if (uname(&utsname) == -1) { 879 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 880 strerror(errno)); 881 exit(2); 882 } 883 884 /* 885 * Get the name of this type of MACHINE from utsname 886 * so we can share an executable for similar machines. 887 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 888 * 889 * Note that both MACHINE and MACHINE_ARCH are decided at 890 * run-time. 891 */ 892 if (!machine) { 893 #ifdef MAKE_NATIVE 894 machine = utsname.machine; 895 #else 896 #ifdef MAKE_MACHINE 897 machine = MAKE_MACHINE; 898 #else 899 machine = "unknown"; 900 #endif 901 #endif 902 } 903 904 if (!machine_arch) { 905 #ifdef MAKE_NATIVE 906 static char machine_arch_buf[sizeof(utsname.machine)]; 907 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 908 size_t len = sizeof(machine_arch_buf); 909 910 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 911 &len, NULL, 0) < 0) { 912 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 913 strerror(errno)); 914 exit(2); 915 } 916 917 machine_arch = machine_arch_buf; 918 #else 919 #ifndef MACHINE_ARCH 920 #ifdef MAKE_MACHINE_ARCH 921 machine_arch = MAKE_MACHINE_ARCH; 922 #else 923 machine_arch = "unknown"; 924 #endif 925 #else 926 machine_arch = MACHINE_ARCH; 927 #endif 928 #endif 929 } 930 931 myPid = getpid(); /* remember this for vFork() */ 932 933 /* 934 * Just in case MAKEOBJDIR wants us to do something tricky. 935 */ 936 Var_Init(); /* Initialize the lists of variables for 937 * parsing arguments */ 938 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 939 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 940 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 941 #ifdef MAKE_VERSION 942 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 943 #endif 944 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 945 /* 946 * This is the traditional preference for makefiles. 947 */ 948 #ifndef MAKEFILE_PREFERENCE_LIST 949 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 950 #endif 951 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 952 VAR_GLOBAL, 0); 953 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 954 955 create = Lst_Init(FALSE); 956 makefiles = Lst_Init(FALSE); 957 printVars = FALSE; 958 debugVflag = FALSE; 959 variables = Lst_Init(FALSE); 960 beSilent = FALSE; /* Print commands as executed */ 961 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 962 noExecute = FALSE; /* Execute all commands */ 963 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 964 keepgoing = FALSE; /* Stop on error */ 965 allPrecious = FALSE; /* Remove targets when interrupted */ 966 deleteOnError = FALSE; /* Historical default behavior */ 967 queryFlag = FALSE; /* This is not just a check-run */ 968 noBuiltins = FALSE; /* Read the built-in rules */ 969 touchFlag = FALSE; /* Actually update targets */ 970 debug = 0; /* No debug verbosity, please. */ 971 jobsRunning = FALSE; 972 973 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 974 maxJobTokens = maxJobs; 975 compatMake = FALSE; /* No compat mode */ 976 ignorePWD = FALSE; 977 978 /* 979 * Initialize the parsing, directory and variable modules to prepare 980 * for the reading of inclusion paths and variable settings on the 981 * command line 982 */ 983 984 /* 985 * Initialize various variables. 986 * MAKE also gets this name, for compatibility 987 * .MAKEFLAGS gets set to the empty string just in case. 988 * MFLAGS also gets initialized empty, for compatibility. 989 */ 990 Parse_Init(); 991 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 992 /* 993 * Leave alone if it is an absolute path, or if it does 994 * not contain a '/' in which case we need to find it in 995 * the path, like execvp(3) and the shells do. 996 */ 997 p1 = argv[0]; 998 } else { 999 /* 1000 * A relative path, canonicalize it. 1001 */ 1002 p1 = cached_realpath(argv[0], mdpath); 1003 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1004 p1 = argv[0]; /* realpath failed */ 1005 } 1006 } 1007 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1008 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1009 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1010 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1011 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1012 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1013 /* some makefiles need to know this */ 1014 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1015 1016 /* 1017 * Set some other useful macros 1018 */ 1019 { 1020 char tmp[64], *ep; 1021 1022 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1023 if (makelevel < 0) 1024 makelevel = 0; 1025 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1026 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1027 snprintf(tmp, sizeof(tmp), "%u", myPid); 1028 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1029 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1030 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1031 } 1032 if (makelevel > 0) { 1033 char pn[1024]; 1034 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1035 progname = bmake_strdup(pn); 1036 } 1037 1038 #ifdef USE_META 1039 meta_init(); 1040 #endif 1041 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1042 1043 /* 1044 * First snag any flags out of the MAKE environment variable. 1045 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1046 * in a different format). 1047 */ 1048 #ifdef POSIX 1049 p1 = explode(getenv("MAKEFLAGS")); 1050 Main_ParseArgLine(p1); 1051 free(p1); 1052 #else 1053 Main_ParseArgLine(getenv("MAKE")); 1054 #endif 1055 1056 /* 1057 * Find where we are (now). 1058 * We take care of PWD for the automounter below... 1059 */ 1060 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1061 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1062 progname, strerror(errno)); 1063 exit(2); 1064 } 1065 1066 MainParseArgs(argc, argv); 1067 1068 if (enterFlag) 1069 printf("%s: Entering directory `%s'\n", progname, curdir); 1070 1071 /* 1072 * Verify that cwd is sane. 1073 */ 1074 if (stat(curdir, &sa) == -1) { 1075 (void)fprintf(stderr, "%s: %s: %s.\n", 1076 progname, curdir, strerror(errno)); 1077 exit(2); 1078 } 1079 1080 /* 1081 * All this code is so that we know where we are when we start up 1082 * on a different machine with pmake. 1083 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1084 * since the value of curdir can vary depending on how we got 1085 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1086 * or via subdir.mk in which case its likely a shell which does 1087 * not provide it. 1088 * So, to stop it breaking this case only, we ignore PWD if 1089 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1090 */ 1091 #ifndef NO_PWD_OVERRIDE 1092 if (!ignorePWD) { 1093 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1094 1095 if ((pwd = getenv("PWD")) != NULL && 1096 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1097 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1098 VAR_CMD, &ptmp2); 1099 1100 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1101 if (stat(pwd, &sb) == 0 && 1102 sa.st_ino == sb.st_ino && 1103 sa.st_dev == sb.st_dev) 1104 (void)strncpy(curdir, pwd, MAXPATHLEN); 1105 } 1106 } 1107 free(ptmp1); 1108 free(ptmp2); 1109 } 1110 #endif 1111 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1112 1113 /* 1114 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1115 * MAKEOBJDIR is set in the environment, try only that value 1116 * and fall back to .CURDIR if it does not exist. 1117 * 1118 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1119 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1120 * of these paths exist, just use .CURDIR. 1121 */ 1122 Dir_Init(curdir); 1123 (void)Main_SetObjdir("%s", curdir); 1124 1125 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1126 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1127 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1128 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1129 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1130 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1131 1132 /* 1133 * Initialize archive, target and suffix modules in preparation for 1134 * parsing the makefile(s) 1135 */ 1136 Arch_Init(); 1137 Targ_Init(); 1138 Suff_Init(); 1139 Trace_Init(tracefile); 1140 1141 DEFAULT = NULL; 1142 (void)time(&now); 1143 1144 Trace_Log(MAKESTART, NULL); 1145 1146 /* 1147 * Set up the .TARGETS variable to contain the list of targets to be 1148 * created. If none specified, make the variable empty -- the parser 1149 * will fill the thing in with the default or .MAIN target. 1150 */ 1151 if (!Lst_IsEmpty(create)) { 1152 LstNode ln; 1153 1154 for (ln = Lst_First(create); ln != NULL; 1155 ln = Lst_Succ(ln)) { 1156 char *name = (char *)Lst_Datum(ln); 1157 1158 Var_Append(".TARGETS", name, VAR_GLOBAL); 1159 } 1160 } else 1161 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1162 1163 1164 /* 1165 * If no user-supplied system path was given (through the -m option) 1166 * add the directories from the DEFSYSPATH (more than one may be given 1167 * as dir1:...:dirn) to the system include path. 1168 */ 1169 if (syspath == NULL || *syspath == '\0') 1170 syspath = defsyspath; 1171 else 1172 syspath = bmake_strdup(syspath); 1173 1174 for (start = syspath; *start != '\0'; start = cp) { 1175 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1176 continue; 1177 if (*cp == ':') { 1178 *cp++ = '\0'; 1179 } 1180 /* look for magic parent directory search string */ 1181 if (strncmp(".../", start, 4) != 0) { 1182 (void)Dir_AddDir(defIncPath, start); 1183 } else { 1184 if (Dir_FindHereOrAbove(curdir, start+4, 1185 found_path, sizeof(found_path))) { 1186 (void)Dir_AddDir(defIncPath, found_path); 1187 } 1188 } 1189 } 1190 if (syspath != defsyspath) 1191 free(syspath); 1192 1193 /* 1194 * Read in the built-in rules first, followed by the specified 1195 * makefile, if it was (makefile != NULL), or the default 1196 * makefile and Makefile, in that order, if it wasn't. 1197 */ 1198 if (!noBuiltins) { 1199 LstNode ln; 1200 1201 sysMkPath = Lst_Init(FALSE); 1202 Dir_Expand(_PATH_DEFSYSMK, 1203 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1204 sysMkPath); 1205 if (Lst_IsEmpty(sysMkPath)) 1206 Fatal("%s: no system rules (%s).", progname, 1207 _PATH_DEFSYSMK); 1208 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1209 if (ln == NULL) 1210 Fatal("%s: cannot open %s.", progname, 1211 (char *)Lst_Datum(ln)); 1212 } 1213 1214 if (!Lst_IsEmpty(makefiles)) { 1215 LstNode ln; 1216 1217 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1218 if (ln != NULL) 1219 Fatal("%s: cannot open %s.", progname, 1220 (char *)Lst_Datum(ln)); 1221 } else { 1222 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1223 VAR_CMD, VARF_WANTRES); 1224 if (p1) { 1225 (void)str2Lst_Append(makefiles, p1, NULL); 1226 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1227 free(p1); 1228 } 1229 } 1230 1231 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1232 if (!noBuiltins || !printVars) { 1233 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1234 VAR_CMD, VARF_WANTRES); 1235 doing_depend = TRUE; 1236 (void)ReadMakefile(makeDependfile, NULL); 1237 doing_depend = FALSE; 1238 } 1239 1240 if (enterFlagObj) 1241 printf("%s: Entering directory `%s'\n", progname, objdir); 1242 1243 MakeMode(NULL); 1244 1245 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1246 free(p1); 1247 1248 if (!forceJobs && !compatMake && 1249 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1250 char *value; 1251 int n; 1252 1253 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1254 n = strtol(value, NULL, 0); 1255 if (n < 1) { 1256 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1257 progname); 1258 exit(1); 1259 } 1260 if (n != maxJobs) { 1261 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1262 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1263 } 1264 maxJobs = n; 1265 maxJobTokens = maxJobs; 1266 forceJobs = TRUE; 1267 free(value); 1268 } 1269 1270 /* 1271 * Be compatible if user did not specify -j and did not explicitly 1272 * turned compatibility on 1273 */ 1274 if (!compatMake && !forceJobs) { 1275 compatMake = TRUE; 1276 } 1277 1278 if (!compatMake) 1279 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1280 if (DEBUG(JOB)) 1281 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1282 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1283 1284 if (!printVars) 1285 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1286 1287 1288 /* 1289 * For compatibility, look at the directories in the VPATH variable 1290 * and add them to the search path, if the variable is defined. The 1291 * variable's value is in the same format as the PATH envariable, i.e. 1292 * <directory>:<directory>:<directory>... 1293 */ 1294 if (Var_Exists("VPATH", VAR_CMD)) { 1295 char *vpath, savec; 1296 /* 1297 * GCC stores string constants in read-only memory, but 1298 * Var_Subst will want to write this thing, so store it 1299 * in an array 1300 */ 1301 static char VPATH[] = "${VPATH}"; 1302 1303 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1304 path = vpath; 1305 do { 1306 /* skip to end of directory */ 1307 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1308 continue; 1309 /* Save terminator character so know when to stop */ 1310 savec = *cp; 1311 *cp = '\0'; 1312 /* Add directory to search path */ 1313 (void)Dir_AddDir(dirSearchPath, path); 1314 *cp = savec; 1315 path = cp + 1; 1316 } while (savec == ':'); 1317 free(vpath); 1318 } 1319 1320 /* 1321 * Now that all search paths have been read for suffixes et al, it's 1322 * time to add the default search path to their lists... 1323 */ 1324 Suff_DoPaths(); 1325 1326 /* 1327 * Propagate attributes through :: dependency lists. 1328 */ 1329 Targ_Propagate(); 1330 1331 /* print the initial graph, if the user requested it */ 1332 if (DEBUG(GRAPH1)) 1333 Targ_PrintGraph(1); 1334 1335 /* print the values of any variables requested by the user */ 1336 if (printVars) { 1337 LstNode ln; 1338 Boolean expandVars; 1339 1340 if (debugVflag) 1341 expandVars = FALSE; 1342 else 1343 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1344 for (ln = Lst_First(variables); ln != NULL; 1345 ln = Lst_Succ(ln)) { 1346 char *var = (char *)Lst_Datum(ln); 1347 char *value; 1348 1349 if (strchr(var, '$')) { 1350 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1351 VARF_WANTRES); 1352 } else if (expandVars) { 1353 char tmp[128]; 1354 1355 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1356 Fatal("%s: variable name too big: %s", 1357 progname, var); 1358 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1359 VARF_WANTRES); 1360 } else { 1361 value = Var_Value(var, VAR_GLOBAL, &p1); 1362 } 1363 printf("%s\n", value ? value : ""); 1364 free(p1); 1365 } 1366 } else { 1367 /* 1368 * Have now read the entire graph and need to make a list of 1369 * targets to create. If none was given on the command line, 1370 * we consult the parsing module to find the main target(s) 1371 * to create. 1372 */ 1373 if (Lst_IsEmpty(create)) 1374 targs = Parse_MainName(); 1375 else 1376 targs = Targ_FindList(create, TARG_CREATE); 1377 1378 if (!compatMake) { 1379 /* 1380 * Initialize job module before traversing the graph 1381 * now that any .BEGIN and .END targets have been read. 1382 * This is done only if the -q flag wasn't given 1383 * (to prevent the .BEGIN from being executed should 1384 * it exist). 1385 */ 1386 if (!queryFlag) { 1387 Job_Init(); 1388 jobsRunning = TRUE; 1389 } 1390 1391 /* Traverse the graph, checking on all the targets */ 1392 outOfDate = Make_Run(targs); 1393 } else { 1394 /* 1395 * Compat_Init will take care of creating all the 1396 * targets as well as initializing the module. 1397 */ 1398 Compat_Run(targs); 1399 } 1400 } 1401 1402 #ifdef CLEANUP 1403 Lst_Destroy(targs, NULL); 1404 Lst_Destroy(variables, NULL); 1405 Lst_Destroy(makefiles, NULL); 1406 Lst_Destroy(create, (FreeProc *)free); 1407 #endif 1408 1409 /* print the graph now it's been processed if the user requested it */ 1410 if (DEBUG(GRAPH2)) 1411 Targ_PrintGraph(2); 1412 1413 Trace_Log(MAKEEND, 0); 1414 1415 if (enterFlagObj) 1416 printf("%s: Leaving directory `%s'\n", progname, objdir); 1417 if (enterFlag) 1418 printf("%s: Leaving directory `%s'\n", progname, curdir); 1419 1420 #ifdef USE_META 1421 meta_finish(); 1422 #endif 1423 Suff_End(); 1424 Targ_End(); 1425 Arch_End(); 1426 Var_End(); 1427 Parse_End(); 1428 Dir_End(); 1429 Job_End(); 1430 Trace_End(); 1431 1432 return outOfDate ? 1 : 0; 1433 } 1434 1435 /*- 1436 * ReadMakefile -- 1437 * Open and parse the given makefile. 1438 * 1439 * Results: 1440 * 0 if ok. -1 if couldn't open file. 1441 * 1442 * Side Effects: 1443 * lots 1444 */ 1445 static int 1446 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1447 { 1448 const char *fname = p; /* makefile to read */ 1449 int fd; 1450 size_t len = MAXPATHLEN; 1451 char *name, *path = bmake_malloc(len); 1452 1453 if (!strcmp(fname, "-")) { 1454 Parse_File(NULL /*stdin*/, -1); 1455 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1456 } else { 1457 /* if we've chdir'd, rebuild the path name */ 1458 if (strcmp(curdir, objdir) && *fname != '/') { 1459 size_t plen = strlen(curdir) + strlen(fname) + 2; 1460 if (len < plen) 1461 path = bmake_realloc(path, len = 2 * plen); 1462 1463 (void)snprintf(path, len, "%s/%s", curdir, fname); 1464 fd = open(path, O_RDONLY); 1465 if (fd != -1) { 1466 fname = path; 1467 goto found; 1468 } 1469 1470 /* If curdir failed, try objdir (ala .depend) */ 1471 plen = strlen(objdir) + strlen(fname) + 2; 1472 if (len < plen) 1473 path = bmake_realloc(path, len = 2 * plen); 1474 (void)snprintf(path, len, "%s/%s", objdir, fname); 1475 fd = open(path, O_RDONLY); 1476 if (fd != -1) { 1477 fname = path; 1478 goto found; 1479 } 1480 } else { 1481 fd = open(fname, O_RDONLY); 1482 if (fd != -1) 1483 goto found; 1484 } 1485 /* look in -I and system include directories. */ 1486 name = Dir_FindFile(fname, parseIncPath); 1487 if (!name) 1488 name = Dir_FindFile(fname, 1489 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1490 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1491 free(name); 1492 free(path); 1493 return(-1); 1494 } 1495 fname = name; 1496 /* 1497 * set the MAKEFILE variable desired by System V fans -- the 1498 * placement of the setting here means it gets set to the last 1499 * makefile specified, as it is set by SysV make. 1500 */ 1501 found: 1502 if (!doing_depend) 1503 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1504 Parse_File(fname, fd); 1505 } 1506 free(path); 1507 return(0); 1508 } 1509 1510 1511 1512 /*- 1513 * Cmd_Exec -- 1514 * Execute the command in cmd, and return the output of that command 1515 * in a string. 1516 * 1517 * Results: 1518 * A string containing the output of the command, or the empty string 1519 * If errnum is not NULL, it contains the reason for the command failure 1520 * 1521 * Side Effects: 1522 * The string must be freed by the caller. 1523 */ 1524 char * 1525 Cmd_Exec(const char *cmd, const char **errnum) 1526 { 1527 const char *args[4]; /* Args for invoking the shell */ 1528 int fds[2]; /* Pipe streams */ 1529 int cpid; /* Child PID */ 1530 int pid; /* PID from wait() */ 1531 char *res; /* result */ 1532 int status; /* command exit status */ 1533 Buffer buf; /* buffer to store the result */ 1534 char *cp; 1535 int cc; /* bytes read, or -1 */ 1536 int savederr; /* saved errno */ 1537 1538 1539 *errnum = NULL; 1540 1541 if (!shellName) 1542 Shell_Init(); 1543 /* 1544 * Set up arguments for shell 1545 */ 1546 args[0] = shellName; 1547 args[1] = "-c"; 1548 args[2] = cmd; 1549 args[3] = NULL; 1550 1551 /* 1552 * Open a pipe for fetching its output 1553 */ 1554 if (pipe(fds) == -1) { 1555 *errnum = "Couldn't create pipe for \"%s\""; 1556 goto bad; 1557 } 1558 1559 /* 1560 * Fork 1561 */ 1562 switch (cpid = vFork()) { 1563 case 0: 1564 /* 1565 * Close input side of pipe 1566 */ 1567 (void)close(fds[0]); 1568 1569 /* 1570 * Duplicate the output stream to the shell's output, then 1571 * shut the extra thing down. Note we don't fetch the error 1572 * stream...why not? Why? 1573 */ 1574 (void)dup2(fds[1], 1); 1575 (void)close(fds[1]); 1576 1577 Var_ExportVars(); 1578 1579 (void)execv(shellPath, UNCONST(args)); 1580 _exit(1); 1581 /*NOTREACHED*/ 1582 1583 case -1: 1584 *errnum = "Couldn't exec \"%s\""; 1585 goto bad; 1586 1587 default: 1588 /* 1589 * No need for the writing half 1590 */ 1591 (void)close(fds[1]); 1592 1593 savederr = 0; 1594 Buf_Init(&buf, 0); 1595 1596 do { 1597 char result[BUFSIZ]; 1598 cc = read(fds[0], result, sizeof(result)); 1599 if (cc > 0) 1600 Buf_AddBytes(&buf, cc, result); 1601 } 1602 while (cc > 0 || (cc == -1 && errno == EINTR)); 1603 if (cc == -1) 1604 savederr = errno; 1605 1606 /* 1607 * Close the input side of the pipe. 1608 */ 1609 (void)close(fds[0]); 1610 1611 /* 1612 * Wait for the process to exit. 1613 */ 1614 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1615 JobReapChild(pid, status, FALSE); 1616 continue; 1617 } 1618 cc = Buf_Size(&buf); 1619 res = Buf_Destroy(&buf, FALSE); 1620 1621 if (savederr != 0) 1622 *errnum = "Couldn't read shell's output for \"%s\""; 1623 1624 if (WIFSIGNALED(status)) 1625 *errnum = "\"%s\" exited on a signal"; 1626 else if (WEXITSTATUS(status) != 0) 1627 *errnum = "\"%s\" returned non-zero status"; 1628 1629 /* 1630 * Null-terminate the result, convert newlines to spaces and 1631 * install it in the variable. 1632 */ 1633 res[cc] = '\0'; 1634 cp = &res[cc]; 1635 1636 if (cc > 0 && *--cp == '\n') { 1637 /* 1638 * A final newline is just stripped 1639 */ 1640 *cp-- = '\0'; 1641 } 1642 while (cp >= res) { 1643 if (*cp == '\n') { 1644 *cp = ' '; 1645 } 1646 cp--; 1647 } 1648 break; 1649 } 1650 return res; 1651 bad: 1652 res = bmake_malloc(1); 1653 *res = '\0'; 1654 return res; 1655 } 1656 1657 /*- 1658 * Error -- 1659 * Print an error message given its format. 1660 * 1661 * Results: 1662 * None. 1663 * 1664 * Side Effects: 1665 * The message is printed. 1666 */ 1667 /* VARARGS */ 1668 void 1669 Error(const char *fmt, ...) 1670 { 1671 va_list ap; 1672 FILE *err_file; 1673 1674 err_file = debug_file; 1675 if (err_file == stdout) 1676 err_file = stderr; 1677 (void)fflush(stdout); 1678 for (;;) { 1679 va_start(ap, fmt); 1680 fprintf(err_file, "%s: ", progname); 1681 (void)vfprintf(err_file, fmt, ap); 1682 va_end(ap); 1683 (void)fprintf(err_file, "\n"); 1684 (void)fflush(err_file); 1685 if (err_file == stderr) 1686 break; 1687 err_file = stderr; 1688 } 1689 } 1690 1691 /*- 1692 * Fatal -- 1693 * Produce a Fatal error message. If jobs are running, waits for them 1694 * to finish. 1695 * 1696 * Results: 1697 * None 1698 * 1699 * Side Effects: 1700 * The program exits 1701 */ 1702 /* VARARGS */ 1703 void 1704 Fatal(const char *fmt, ...) 1705 { 1706 va_list ap; 1707 1708 va_start(ap, fmt); 1709 if (jobsRunning) 1710 Job_Wait(); 1711 1712 (void)fflush(stdout); 1713 (void)vfprintf(stderr, fmt, ap); 1714 va_end(ap); 1715 (void)fprintf(stderr, "\n"); 1716 (void)fflush(stderr); 1717 1718 PrintOnError(NULL, NULL); 1719 1720 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1721 Targ_PrintGraph(2); 1722 Trace_Log(MAKEERROR, 0); 1723 exit(2); /* Not 1 so -q can distinguish error */ 1724 } 1725 1726 /* 1727 * Punt -- 1728 * Major exception once jobs are being created. Kills all jobs, prints 1729 * a message and exits. 1730 * 1731 * Results: 1732 * None 1733 * 1734 * Side Effects: 1735 * All children are killed indiscriminately and the program Lib_Exits 1736 */ 1737 /* VARARGS */ 1738 void 1739 Punt(const char *fmt, ...) 1740 { 1741 va_list ap; 1742 1743 va_start(ap, fmt); 1744 (void)fflush(stdout); 1745 (void)fprintf(stderr, "%s: ", progname); 1746 (void)vfprintf(stderr, fmt, ap); 1747 va_end(ap); 1748 (void)fprintf(stderr, "\n"); 1749 (void)fflush(stderr); 1750 1751 PrintOnError(NULL, NULL); 1752 1753 DieHorribly(); 1754 } 1755 1756 /*- 1757 * DieHorribly -- 1758 * Exit without giving a message. 1759 * 1760 * Results: 1761 * None 1762 * 1763 * Side Effects: 1764 * A big one... 1765 */ 1766 void 1767 DieHorribly(void) 1768 { 1769 if (jobsRunning) 1770 Job_AbortAll(); 1771 if (DEBUG(GRAPH2)) 1772 Targ_PrintGraph(2); 1773 Trace_Log(MAKEERROR, 0); 1774 exit(2); /* Not 1, so -q can distinguish error */ 1775 } 1776 1777 /* 1778 * Finish -- 1779 * Called when aborting due to errors in child shell to signal 1780 * abnormal exit. 1781 * 1782 * Results: 1783 * None 1784 * 1785 * Side Effects: 1786 * The program exits 1787 */ 1788 void 1789 Finish(int errors) 1790 /* number of errors encountered in Make_Make */ 1791 { 1792 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1793 } 1794 1795 /* 1796 * eunlink -- 1797 * Remove a file carefully, avoiding directories. 1798 */ 1799 int 1800 eunlink(const char *file) 1801 { 1802 struct stat st; 1803 1804 if (lstat(file, &st) == -1) 1805 return -1; 1806 1807 if (S_ISDIR(st.st_mode)) { 1808 errno = EISDIR; 1809 return -1; 1810 } 1811 return unlink(file); 1812 } 1813 1814 /* 1815 * execError -- 1816 * Print why exec failed, avoiding stdio. 1817 */ 1818 void 1819 execError(const char *af, const char *av) 1820 { 1821 #ifdef USE_IOVEC 1822 int i = 0; 1823 struct iovec iov[8]; 1824 #define IOADD(s) \ 1825 (void)(iov[i].iov_base = UNCONST(s), \ 1826 iov[i].iov_len = strlen(iov[i].iov_base), \ 1827 i++) 1828 #else 1829 #define IOADD(void)write(2, s, strlen(s)) 1830 #endif 1831 1832 IOADD(progname); 1833 IOADD(": "); 1834 IOADD(af); 1835 IOADD("("); 1836 IOADD(av); 1837 IOADD(") failed ("); 1838 IOADD(strerror(errno)); 1839 IOADD(")\n"); 1840 1841 #ifdef USE_IOVEC 1842 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1843 continue; 1844 #endif 1845 } 1846 1847 /* 1848 * usage -- 1849 * exit with usage message 1850 */ 1851 static void 1852 usage(void) 1853 { 1854 char *p; 1855 if ((p = strchr(progname, '[')) != NULL) 1856 *p = '\0'; 1857 1858 (void)fprintf(stderr, 1859 "usage: %s [-BeikNnqrstWwX] \n\ 1860 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1861 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1862 [-V variable] [variable=value] [target ...]\n", progname); 1863 exit(2); 1864 } 1865 1866 1867 /* 1868 * realpath(3) can get expensive, cache results... 1869 */ 1870 char * 1871 cached_realpath(const char *pathname, char *resolved) 1872 { 1873 static GNode *cache; 1874 char *rp, *cp; 1875 1876 if (!pathname || !pathname[0]) 1877 return NULL; 1878 1879 if (!cache) { 1880 cache = Targ_NewGN("Realpath"); 1881 #ifndef DEBUG_REALPATH_CACHE 1882 cache->flags = INTERNAL; 1883 #endif 1884 } 1885 1886 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1887 /* a hit */ 1888 strncpy(resolved, rp, MAXPATHLEN); 1889 resolved[MAXPATHLEN - 1] = '\0'; 1890 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1891 Var_Set(pathname, rp, cache, 0); 1892 } /* else should we negative-cache? */ 1893 1894 free(cp); 1895 return rp ? resolved : NULL; 1896 } 1897 1898 int 1899 PrintAddr(void *a, void *b) 1900 { 1901 printf("%lx ", (unsigned long) a); 1902 return b ? 0 : 0; 1903 } 1904 1905 1906 static int 1907 addErrorCMD(void *cmdp, void *gnp) 1908 { 1909 if (cmdp == NULL) 1910 return 1; /* stop */ 1911 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1912 return 0; 1913 } 1914 1915 void 1916 PrintOnError(GNode *gn, const char *s) 1917 { 1918 static GNode *en = NULL; 1919 char tmp[64]; 1920 char *cp; 1921 1922 if (s) 1923 printf("%s", s); 1924 1925 printf("\n%s: stopped in %s\n", progname, curdir); 1926 1927 if (en) 1928 return; /* we've been here! */ 1929 if (gn) { 1930 /* 1931 * We can print this even if there is no .ERROR target. 1932 */ 1933 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1934 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 1935 Lst_ForEach(gn->commands, addErrorCMD, gn); 1936 } 1937 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1938 sizeof(tmp) - 1); 1939 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 1940 if (cp) { 1941 if (*cp) 1942 printf("%s", cp); 1943 free(cp); 1944 } 1945 fflush(stdout); 1946 1947 /* 1948 * Finally, see if there is a .ERROR target, and run it if so. 1949 */ 1950 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1951 if (en) { 1952 en->type |= OP_SPECIAL; 1953 Compat_Make(en, en); 1954 } 1955 } 1956 1957 void 1958 Main_ExportMAKEFLAGS(Boolean first) 1959 { 1960 static int once = 1; 1961 char tmp[64]; 1962 char *s; 1963 1964 if (once != first) 1965 return; 1966 once = 0; 1967 1968 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1969 sizeof(tmp)); 1970 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 1971 if (s && *s) { 1972 #ifdef POSIX 1973 setenv("MAKEFLAGS", s, 1); 1974 #else 1975 setenv("MAKE", s, 1); 1976 #endif 1977 } 1978 } 1979 1980 char * 1981 getTmpdir(void) 1982 { 1983 static char *tmpdir = NULL; 1984 1985 if (!tmpdir) { 1986 struct stat st; 1987 1988 /* 1989 * Honor $TMPDIR but only if it is valid. 1990 * Ensure it ends with /. 1991 */ 1992 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 1993 VARF_WANTRES); 1994 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1995 free(tmpdir); 1996 tmpdir = bmake_strdup(_PATH_TMP); 1997 } 1998 } 1999 return tmpdir; 2000 } 2001 2002 /* 2003 * Create and open a temp file using "pattern". 2004 * If "fnamep" is provided set it to a copy of the filename created. 2005 * Otherwise unlink the file once open. 2006 */ 2007 int 2008 mkTempFile(const char *pattern, char **fnamep) 2009 { 2010 static char *tmpdir = NULL; 2011 char tfile[MAXPATHLEN]; 2012 int fd; 2013 2014 if (!pattern) 2015 pattern = TMPPAT; 2016 if (!tmpdir) 2017 tmpdir = getTmpdir(); 2018 if (pattern[0] == '/') { 2019 snprintf(tfile, sizeof(tfile), "%s", pattern); 2020 } else { 2021 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2022 } 2023 if ((fd = mkstemp(tfile)) < 0) 2024 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2025 if (fnamep) { 2026 *fnamep = bmake_strdup(tfile); 2027 } else { 2028 unlink(tfile); /* we just want the descriptor */ 2029 } 2030 return fd; 2031 } 2032 2033 /* 2034 * Convert a string representation of a boolean. 2035 * Anything that looks like "No", "False", "Off", "0" etc, 2036 * is FALSE, otherwise TRUE. 2037 */ 2038 Boolean 2039 s2Boolean(const char *s, Boolean bf) 2040 { 2041 if (s) { 2042 switch(*s) { 2043 case '\0': /* not set - the default wins */ 2044 break; 2045 case '0': 2046 case 'F': 2047 case 'f': 2048 case 'N': 2049 case 'n': 2050 bf = FALSE; 2051 break; 2052 case 'O': 2053 case 'o': 2054 switch (s[1]) { 2055 case 'F': 2056 case 'f': 2057 bf = FALSE; 2058 break; 2059 default: 2060 bf = TRUE; 2061 break; 2062 } 2063 break; 2064 default: 2065 bf = TRUE; 2066 break; 2067 } 2068 } 2069 return (bf); 2070 } 2071 2072 /* 2073 * Return a Boolean based on setting of a knob. 2074 * 2075 * If the knob is not set, the supplied default is the return value. 2076 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2077 * is FALSE, otherwise TRUE. 2078 */ 2079 Boolean 2080 getBoolean(const char *name, Boolean bf) 2081 { 2082 char tmp[64]; 2083 char *cp; 2084 2085 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2086 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2087 2088 if (cp) { 2089 bf = s2Boolean(cp, bf); 2090 free(cp); 2091 } 2092 } 2093 return (bf); 2094 } 2095
Indexes created Wed Sep 24 05:09:52 GMT 2025