1 /* $NetBSD: main.c,v 1.254 2016/12/10 23:12:39 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.254 2016/12/10 23:12:39 christos Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.254 2016/12/10 23:12:39 christos Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and 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 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include "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 #ifndef __arraycount 151 # define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) 152 #endif 153 154 Lst create; /* Targets to be made */ 155 time_t now; /* Time at start of make */ 156 GNode *DEFAULT; /* .DEFAULT node */ 157 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 158 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 159 160 static Boolean noBuiltins; /* -r flag */ 161 static Lst makefiles; /* ordered list of makefiles to read */ 162 static Boolean printVars; /* print value of one or more vars */ 163 static Lst variables; /* list of variables to print */ 164 int maxJobs; /* -j argument */ 165 static int maxJobTokens; /* -j argument */ 166 Boolean compatMake; /* -B argument */ 167 int debug; /* -d argument */ 168 Boolean debugVflag; /* -dV */ 169 Boolean noExecute; /* -n flag */ 170 Boolean noRecursiveExecute; /* -N flag */ 171 Boolean keepgoing; /* -k flag */ 172 Boolean queryFlag; /* -q flag */ 173 Boolean touchFlag; /* -t flag */ 174 Boolean enterFlag; /* -w flag */ 175 Boolean enterFlagObj; /* -w and objdir != srcdir */ 176 Boolean ignoreErrors; /* -i flag */ 177 Boolean beSilent; /* -s flag */ 178 Boolean oldVars; /* variable substitution style */ 179 Boolean checkEnvFirst; /* -e flag */ 180 Boolean parseWarnFatal; /* -W flag */ 181 Boolean jobServer; /* -J flag */ 182 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 183 Boolean varNoExportEnv; /* -X flag */ 184 Boolean doing_depend; /* Set while reading .depend */ 185 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 186 static const char * tracefile; 187 static void MainParseArgs(int, char **); 188 static int ReadMakefile(const void *, const void *); 189 static void usage(void) MAKE_ATTR_DEAD; 190 191 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 192 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 193 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 194 char *progname; /* the program name */ 195 char *makeDependfile; 196 pid_t myPid; 197 int makelevel; 198 199 Boolean forceJobs = FALSE; 200 201 /* 202 * On some systems MACHINE is defined as something other than 203 * what we want. 204 */ 205 #ifdef FORCE_MACHINE 206 # undef MACHINE 207 # define MACHINE FORCE_MACHINE 208 #endif 209 210 extern Lst parseIncPath; 211 212 /* 213 * For compatibility with the POSIX version of MAKEFLAGS that includes 214 * all the options with out -, convert flags to -f -l -a -g -s. 215 */ 216 static char * 217 explode(const char *flags) 218 { 219 size_t len; 220 char *nf, *st; 221 const char *f; 222 223 if (flags == NULL) 224 return NULL; 225 226 for (f = flags; *f; f++) 227 if (!isalpha((unsigned char)*f)) 228 break; 229 230 if (*f) 231 return bmake_strdup(flags); 232 233 len = strlen(flags); 234 st = nf = bmake_malloc(len * 3 + 1); 235 while (*flags) { 236 *nf++ = '-'; 237 *nf++ = *flags++; 238 *nf++ = ' '; 239 } 240 *nf = '\0'; 241 return st; 242 } 243 244 static void 245 parse_debug_options(const char *argvalue) 246 { 247 const char *modules; 248 const char *mode; 249 char *fname; 250 int len; 251 252 for (modules = argvalue; *modules; ++modules) { 253 switch (*modules) { 254 case 'A': 255 debug = ~0; 256 break; 257 case 'a': 258 debug |= DEBUG_ARCH; 259 break; 260 case 'C': 261 debug |= DEBUG_CWD; 262 break; 263 case 'c': 264 debug |= DEBUG_COND; 265 break; 266 case 'd': 267 debug |= DEBUG_DIR; 268 break; 269 case 'e': 270 debug |= DEBUG_ERROR; 271 break; 272 case 'f': 273 debug |= DEBUG_FOR; 274 break; 275 case 'g': 276 if (modules[1] == '1') { 277 debug |= DEBUG_GRAPH1; 278 ++modules; 279 } 280 else if (modules[1] == '2') { 281 debug |= DEBUG_GRAPH2; 282 ++modules; 283 } 284 else if (modules[1] == '3') { 285 debug |= DEBUG_GRAPH3; 286 ++modules; 287 } 288 break; 289 case 'j': 290 debug |= DEBUG_JOB; 291 break; 292 case 'l': 293 debug |= DEBUG_LOUD; 294 break; 295 case 'M': 296 debug |= DEBUG_META; 297 break; 298 case 'm': 299 debug |= DEBUG_MAKE; 300 break; 301 case 'n': 302 debug |= DEBUG_SCRIPT; 303 break; 304 case 'p': 305 debug |= DEBUG_PARSE; 306 break; 307 case 's': 308 debug |= DEBUG_SUFF; 309 break; 310 case 't': 311 debug |= DEBUG_TARG; 312 break; 313 case 'V': 314 debugVflag = TRUE; 315 break; 316 case 'v': 317 debug |= DEBUG_VAR; 318 break; 319 case 'x': 320 debug |= DEBUG_SHELL; 321 break; 322 case 'F': 323 if (debug_file != stdout && debug_file != stderr) 324 fclose(debug_file); 325 if (*++modules == '+') { 326 modules++; 327 mode = "a"; 328 } else 329 mode = "w"; 330 if (strcmp(modules, "stdout") == 0) { 331 debug_file = stdout; 332 goto debug_setbuf; 333 } 334 if (strcmp(modules, "stderr") == 0) { 335 debug_file = stderr; 336 goto debug_setbuf; 337 } 338 len = strlen(modules); 339 fname = malloc(len + 20); 340 memcpy(fname, modules, len + 1); 341 /* Let the filename be modified by the pid */ 342 if (strcmp(fname + len - 3, ".%d") == 0) 343 snprintf(fname + len - 2, 20, "%d", getpid()); 344 debug_file = fopen(fname, mode); 345 if (!debug_file) { 346 fprintf(stderr, "Cannot open debug file %s\n", 347 fname); 348 usage(); 349 } 350 free(fname); 351 goto debug_setbuf; 352 default: 353 (void)fprintf(stderr, 354 "%s: illegal argument to d option -- %c\n", 355 progname, *modules); 356 usage(); 357 } 358 } 359 debug_setbuf: 360 /* 361 * Make the debug_file unbuffered, and make 362 * stdout line buffered (unless debugfile == stdout). 363 */ 364 setvbuf(debug_file, NULL, _IONBF, 0); 365 if (debug_file != stdout) { 366 setvbuf(stdout, NULL, _IOLBF, 0); 367 } 368 } 369 370 /*- 371 * MainParseArgs -- 372 * Parse a given argument vector. Called from main() and from 373 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 374 * 375 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 376 * 377 * Results: 378 * None 379 * 380 * Side Effects: 381 * Various global and local flags will be set depending on the flags 382 * given 383 */ 384 static void 385 MainParseArgs(int argc, char **argv) 386 { 387 char *p; 388 int c = '?'; 389 int arginc; 390 char *argvalue; 391 const char *getopt_def; 392 char *optscan; 393 Boolean inOption, dashDash = FALSE; 394 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 395 396 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 397 /* Can't actually use getopt(3) because rescanning is not portable */ 398 399 getopt_def = OPTFLAGS; 400 rearg: 401 inOption = FALSE; 402 optscan = NULL; 403 while(argc > 1) { 404 char *getopt_spec; 405 if(!inOption) 406 optscan = argv[1]; 407 c = *optscan++; 408 arginc = 0; 409 if(inOption) { 410 if(c == '\0') { 411 ++argv; 412 --argc; 413 inOption = FALSE; 414 continue; 415 } 416 } else { 417 if (c != '-' || dashDash) 418 break; 419 inOption = TRUE; 420 c = *optscan++; 421 } 422 /* '-' found at some earlier point */ 423 getopt_spec = strchr(getopt_def, c); 424 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 425 /* -<something> found, and <something> should have an arg */ 426 inOption = FALSE; 427 arginc = 1; 428 argvalue = optscan; 429 if(*argvalue == '\0') { 430 if (argc < 3) 431 goto noarg; 432 argvalue = argv[2]; 433 arginc = 2; 434 } 435 } else { 436 argvalue = NULL; 437 } 438 switch(c) { 439 case '\0': 440 arginc = 1; 441 inOption = FALSE; 442 break; 443 case 'B': 444 compatMake = TRUE; 445 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 446 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 447 break; 448 case 'C': 449 if (chdir(argvalue) == -1) { 450 (void)fprintf(stderr, 451 "%s: chdir %s: %s\n", 452 progname, argvalue, 453 strerror(errno)); 454 exit(1); 455 } 456 if (getcwd(curdir, MAXPATHLEN) == NULL) { 457 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 458 exit(2); 459 } 460 ignorePWD = TRUE; 461 break; 462 case 'D': 463 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 464 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 465 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 466 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 467 break; 468 case 'I': 469 if (argvalue == NULL) goto noarg; 470 Parse_AddIncludeDir(argvalue); 471 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 472 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 473 break; 474 case 'J': 475 if (argvalue == NULL) goto noarg; 476 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 477 (void)fprintf(stderr, 478 "%s: internal error -- J option malformed (%s)\n", 479 progname, argvalue); 480 usage(); 481 } 482 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 483 (fcntl(jp_1, F_GETFD, 0) < 0)) { 484 #if 0 485 (void)fprintf(stderr, 486 "%s: ###### warning -- J descriptors were closed!\n", 487 progname); 488 exit(2); 489 #endif 490 jp_0 = -1; 491 jp_1 = -1; 492 compatMake = TRUE; 493 } else { 494 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 495 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 496 jobServer = TRUE; 497 } 498 break; 499 case 'N': 500 noExecute = TRUE; 501 noRecursiveExecute = TRUE; 502 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 503 break; 504 case 'S': 505 keepgoing = FALSE; 506 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 507 break; 508 case 'T': 509 if (argvalue == NULL) goto noarg; 510 tracefile = bmake_strdup(argvalue); 511 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 512 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 513 break; 514 case 'V': 515 if (argvalue == NULL) goto noarg; 516 printVars = TRUE; 517 (void)Lst_AtEnd(variables, argvalue); 518 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 519 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 520 break; 521 case 'W': 522 parseWarnFatal = TRUE; 523 break; 524 case 'X': 525 varNoExportEnv = TRUE; 526 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 527 break; 528 case 'd': 529 if (argvalue == NULL) goto noarg; 530 /* If '-d-opts' don't pass to children */ 531 if (argvalue[0] == '-') 532 argvalue++; 533 else { 534 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 535 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 536 } 537 parse_debug_options(argvalue); 538 break; 539 case 'e': 540 checkEnvFirst = TRUE; 541 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 542 break; 543 case 'f': 544 if (argvalue == NULL) goto noarg; 545 (void)Lst_AtEnd(makefiles, argvalue); 546 break; 547 case 'i': 548 ignoreErrors = TRUE; 549 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 550 break; 551 case 'j': 552 if (argvalue == NULL) goto noarg; 553 forceJobs = TRUE; 554 maxJobs = strtol(argvalue, &p, 0); 555 if (*p != '\0' || maxJobs < 1) { 556 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 557 progname); 558 exit(1); 559 } 560 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 561 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 562 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 563 maxJobTokens = maxJobs; 564 break; 565 case 'k': 566 keepgoing = TRUE; 567 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 568 break; 569 case 'm': 570 if (argvalue == NULL) goto noarg; 571 /* look for magic parent directory search string */ 572 if (strncmp(".../", argvalue, 4) == 0) { 573 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 574 found_path, sizeof(found_path))) 575 break; /* nothing doing */ 576 (void)Dir_AddDir(sysIncPath, found_path); 577 } else { 578 (void)Dir_AddDir(sysIncPath, argvalue); 579 } 580 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 581 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 582 break; 583 case 'n': 584 noExecute = TRUE; 585 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 586 break; 587 case 'q': 588 queryFlag = TRUE; 589 /* Kind of nonsensical, wot? */ 590 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 591 break; 592 case 'r': 593 noBuiltins = TRUE; 594 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 595 break; 596 case 's': 597 beSilent = TRUE; 598 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 599 break; 600 case 't': 601 touchFlag = TRUE; 602 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 603 break; 604 case 'w': 605 enterFlag = TRUE; 606 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 607 break; 608 case '-': 609 dashDash = TRUE; 610 break; 611 default: 612 case '?': 613 #ifndef MAKE_NATIVE 614 fprintf(stderr, "getopt(%s) -> %d (%c)\n", 615 OPTFLAGS, c, c); 616 #endif 617 usage(); 618 } 619 argv += arginc; 620 argc -= arginc; 621 } 622 623 oldVars = TRUE; 624 625 /* 626 * See if the rest of the arguments are variable assignments and 627 * perform them if so. Else take them to be targets and stuff them 628 * on the end of the "create" list. 629 */ 630 for (; argc > 1; ++argv, --argc) 631 if (Parse_IsVar(argv[1])) { 632 Parse_DoVar(argv[1], VAR_CMD); 633 } else { 634 if (!*argv[1]) 635 Punt("illegal (null) argument."); 636 if (*argv[1] == '-' && !dashDash) 637 goto rearg; 638 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 639 } 640 641 return; 642 noarg: 643 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 644 progname, c); 645 usage(); 646 } 647 648 /*- 649 * Main_ParseArgLine -- 650 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 651 * is encountered and by main() when reading the .MAKEFLAGS envariable. 652 * Takes a line of arguments and breaks it into its 653 * component words and passes those words and the number of them to the 654 * MainParseArgs function. 655 * The line should have all its leading whitespace removed. 656 * 657 * Input: 658 * line Line to fracture 659 * 660 * Results: 661 * None 662 * 663 * Side Effects: 664 * Only those that come from the various arguments. 665 */ 666 void 667 Main_ParseArgLine(const char *line) 668 { 669 char **argv; /* Manufactured argument vector */ 670 int argc; /* Number of arguments in argv */ 671 char *args; /* Space used by the args */ 672 char *buf, *p1; 673 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 674 size_t len; 675 676 if (line == NULL) 677 return; 678 for (; *line == ' '; ++line) 679 continue; 680 if (!*line) 681 return; 682 683 #ifndef POSIX 684 { 685 /* 686 * $MAKE may simply be naming the make(1) binary 687 */ 688 char *cp; 689 690 if (!(cp = strrchr(line, '/'))) 691 cp = line; 692 if ((cp = strstr(cp, "make")) && 693 strcmp(cp, "make") == 0) 694 return; 695 } 696 #endif 697 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 698 (void)snprintf(buf, len, "%s %s", argv0, line); 699 free(p1); 700 701 argv = brk_string(buf, &argc, TRUE, &args); 702 if (argv == NULL) { 703 Error("Unterminated quoted string [%s]", buf); 704 free(buf); 705 return; 706 } 707 free(buf); 708 MainParseArgs(argc, argv); 709 710 free(args); 711 free(argv); 712 } 713 714 Boolean 715 Main_SetObjdir(const char *fmt, ...) 716 { 717 struct stat sb; 718 char *p, *path; 719 char buf[MAXPATHLEN + 1], pbuf[MAXPATHLEN + 1]; 720 Boolean rc = FALSE; 721 va_list ap; 722 723 va_start(ap, fmt); 724 vsnprintf(path = pbuf, MAXPATHLEN, fmt, ap); 725 va_end(ap); 726 727 /* expand variable substitutions */ 728 if (strchr(path, '$') != 0) { 729 snprintf(buf, MAXPATHLEN, "%s", path); 730 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, VARF_WANTRES); 731 } else 732 p = NULL; 733 734 if (path[0] != '/') { 735 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 736 path = buf; 737 } 738 739 /* look for the directory and try to chdir there */ 740 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 741 if (chdir(path)) { 742 (void)fprintf(stderr, "make warning: %s: %s.\n", 743 path, strerror(errno)); 744 } else { 745 strncpy(objdir, path, MAXPATHLEN); 746 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 747 setenv("PWD", objdir, 1); 748 Dir_InitDot(); 749 rc = TRUE; 750 if (enterFlag && strcmp(objdir, curdir) != 0) 751 enterFlagObj = TRUE; 752 } 753 } 754 755 free(p); 756 return rc; 757 } 758 759 static Boolean 760 Main_SetVarObjdir(const char *var, const char *suffix) 761 { 762 char *p1, *path; 763 if ((path = Var_Value(var, VAR_CMD, &p1)) == NULL) 764 return FALSE; 765 766 (void)Main_SetObjdir("%s%s", path, suffix); 767 free(p1); 768 return TRUE; 769 } 770 771 /*- 772 * ReadAllMakefiles -- 773 * wrapper around ReadMakefile() to read all. 774 * 775 * Results: 776 * TRUE if ok, FALSE on error 777 */ 778 static int 779 ReadAllMakefiles(const void *p, const void *q) 780 { 781 return (ReadMakefile(p, q) == 0); 782 } 783 784 int 785 str2Lst_Append(Lst lp, char *str, const char *sep) 786 { 787 char *cp; 788 int n; 789 790 if (!sep) 791 sep = " \t"; 792 793 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 794 (void)Lst_AtEnd(lp, cp); 795 n++; 796 } 797 return (n); 798 } 799 800 #ifdef SIGINFO 801 /*ARGSUSED*/ 802 static void 803 siginfo(int signo MAKE_ATTR_UNUSED) 804 { 805 char dir[MAXPATHLEN]; 806 char str[2 * MAXPATHLEN]; 807 int len; 808 if (getcwd(dir, sizeof(dir)) == NULL) 809 return; 810 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 811 if (len > 0) 812 (void)write(STDERR_FILENO, str, (size_t)len); 813 } 814 #endif 815 816 /* 817 * Allow makefiles some control over the mode we run in. 818 */ 819 void 820 MakeMode(const char *mode) 821 { 822 char *mp = NULL; 823 824 if (!mode) 825 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 826 VAR_GLOBAL, VARF_WANTRES); 827 828 if (mode && *mode) { 829 if (strstr(mode, "compat")) { 830 compatMake = TRUE; 831 forceJobs = FALSE; 832 } 833 #if USE_META 834 if (strstr(mode, "meta")) 835 meta_mode_init(mode); 836 #endif 837 } 838 839 free(mp); 840 } 841 842 /*- 843 * main -- 844 * The main function, for obvious reasons. Initializes variables 845 * and a few modules, then parses the arguments give it in the 846 * environment and on the command line. Reads the system makefile 847 * followed by either Makefile, makefile or the file given by the 848 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 849 * flags it has received by then uses either the Make or the Compat 850 * module to create the initial list of targets. 851 * 852 * Results: 853 * If -q was given, exits -1 if anything was out-of-date. Else it exits 854 * 0. 855 * 856 * Side Effects: 857 * The program exits when done. Targets are created. etc. etc. etc. 858 */ 859 int 860 main(int argc, char **argv) 861 { 862 Lst targs; /* target nodes to create -- passed to Make_Init */ 863 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 864 struct stat sb, sa; 865 char *p1, *path; 866 char mdpath[MAXPATHLEN]; 867 #ifdef FORCE_MACHINE 868 const char *machine = FORCE_MACHINE; 869 #else 870 const char *machine = getenv("MACHINE"); 871 #endif 872 const char *machine_arch = getenv("MACHINE_ARCH"); 873 char *syspath = getenv("MAKESYSPATH"); 874 Lst sysMkPath; /* Path of sys.mk */ 875 char *cp = NULL, *start; 876 /* avoid faults on read-only strings */ 877 static char defsyspath[] = _PATH_DEFSYSPATH; 878 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 879 struct timeval rightnow; /* to initialize random seed */ 880 struct utsname utsname; 881 882 /* default to writing debug to stderr */ 883 debug_file = stderr; 884 885 #ifdef SIGINFO 886 (void)bmake_signal(SIGINFO, siginfo); 887 #endif 888 /* 889 * Set the seed to produce a different random sequence 890 * on each program execution. 891 */ 892 gettimeofday(&rightnow, NULL); 893 srandom(rightnow.tv_sec + rightnow.tv_usec); 894 895 if ((progname = strrchr(argv[0], '/')) != NULL) 896 progname++; 897 else 898 progname = argv[0]; 899 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 900 /* 901 * get rid of resource limit on file descriptors 902 */ 903 { 904 struct rlimit rl; 905 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 906 rl.rlim_cur != rl.rlim_max) { 907 rl.rlim_cur = rl.rlim_max; 908 (void)setrlimit(RLIMIT_NOFILE, &rl); 909 } 910 } 911 #endif 912 913 if (uname(&utsname) == -1) { 914 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 915 strerror(errno)); 916 exit(2); 917 } 918 919 /* 920 * Get the name of this type of MACHINE from utsname 921 * so we can share an executable for similar machines. 922 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 923 * 924 * Note that both MACHINE and MACHINE_ARCH are decided at 925 * run-time. 926 */ 927 if (!machine) { 928 #ifdef MAKE_NATIVE 929 machine = utsname.machine; 930 #else 931 #ifdef MAKE_MACHINE 932 machine = MAKE_MACHINE; 933 #else 934 machine = "unknown"; 935 #endif 936 #endif 937 } 938 939 if (!machine_arch) { 940 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH) 941 static char machine_arch_buf[sizeof(utsname.machine)]; 942 int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 943 size_t len = sizeof(machine_arch_buf); 944 945 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 946 &len, NULL, 0) < 0) { 947 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 948 strerror(errno)); 949 exit(2); 950 } 951 952 machine_arch = machine_arch_buf; 953 #else 954 #ifndef MACHINE_ARCH 955 #ifdef MAKE_MACHINE_ARCH 956 machine_arch = MAKE_MACHINE_ARCH; 957 #else 958 machine_arch = "unknown"; 959 #endif 960 #else 961 machine_arch = MACHINE_ARCH; 962 #endif 963 #endif 964 } 965 966 myPid = getpid(); /* remember this for vFork() */ 967 968 /* 969 * Just in case MAKEOBJDIR wants us to do something tricky. 970 */ 971 Var_Init(); /* Initialize the lists of variables for 972 * parsing arguments */ 973 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 974 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 975 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 976 #ifdef MAKE_VERSION 977 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 978 #endif 979 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 980 /* 981 * This is the traditional preference for makefiles. 982 */ 983 #ifndef MAKEFILE_PREFERENCE_LIST 984 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 985 #endif 986 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 987 VAR_GLOBAL, 0); 988 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 989 990 create = Lst_Init(FALSE); 991 makefiles = Lst_Init(FALSE); 992 printVars = FALSE; 993 debugVflag = FALSE; 994 variables = Lst_Init(FALSE); 995 beSilent = FALSE; /* Print commands as executed */ 996 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 997 noExecute = FALSE; /* Execute all commands */ 998 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 999 keepgoing = FALSE; /* Stop on error */ 1000 allPrecious = FALSE; /* Remove targets when interrupted */ 1001 deleteOnError = FALSE; /* Historical default behavior */ 1002 queryFlag = FALSE; /* This is not just a check-run */ 1003 noBuiltins = FALSE; /* Read the built-in rules */ 1004 touchFlag = FALSE; /* Actually update targets */ 1005 debug = 0; /* No debug verbosity, please. */ 1006 jobsRunning = FALSE; 1007 1008 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1009 maxJobTokens = maxJobs; 1010 compatMake = FALSE; /* No compat mode */ 1011 ignorePWD = FALSE; 1012 1013 /* 1014 * Initialize the parsing, directory and variable modules to prepare 1015 * for the reading of inclusion paths and variable settings on the 1016 * command line 1017 */ 1018 1019 /* 1020 * Initialize various variables. 1021 * MAKE also gets this name, for compatibility 1022 * .MAKEFLAGS gets set to the empty string just in case. 1023 * MFLAGS also gets initialized empty, for compatibility. 1024 */ 1025 Parse_Init(); 1026 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1027 /* 1028 * Leave alone if it is an absolute path, or if it does 1029 * not contain a '/' in which case we need to find it in 1030 * the path, like execvp(3) and the shells do. 1031 */ 1032 p1 = argv[0]; 1033 } else { 1034 /* 1035 * A relative path, canonicalize it. 1036 */ 1037 p1 = cached_realpath(argv[0], mdpath); 1038 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1039 p1 = argv[0]; /* realpath failed */ 1040 } 1041 } 1042 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1043 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1044 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1045 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1046 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1047 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1048 /* some makefiles need to know this */ 1049 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1050 1051 /* 1052 * Set some other useful macros 1053 */ 1054 { 1055 char tmp[64], *ep; 1056 1057 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1058 if (makelevel < 0) 1059 makelevel = 0; 1060 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1061 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1062 snprintf(tmp, sizeof(tmp), "%u", myPid); 1063 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1064 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1065 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1066 } 1067 if (makelevel > 0) { 1068 char pn[1024]; 1069 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1070 progname = bmake_strdup(pn); 1071 } 1072 1073 #ifdef USE_META 1074 meta_init(); 1075 #endif 1076 /* 1077 * First snag any flags out of the MAKE environment variable. 1078 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1079 * in a different format). 1080 */ 1081 #ifdef POSIX 1082 p1 = explode(getenv("MAKEFLAGS")); 1083 Main_ParseArgLine(p1); 1084 free(p1); 1085 #else 1086 Main_ParseArgLine(getenv("MAKE")); 1087 #endif 1088 1089 /* 1090 * Find where we are (now). 1091 * We take care of PWD for the automounter below... 1092 */ 1093 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1094 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1095 progname, strerror(errno)); 1096 exit(2); 1097 } 1098 1099 MainParseArgs(argc, argv); 1100 1101 if (enterFlag) 1102 printf("%s: Entering directory `%s'\n", progname, curdir); 1103 1104 /* 1105 * Verify that cwd is sane. 1106 */ 1107 if (stat(curdir, &sa) == -1) { 1108 (void)fprintf(stderr, "%s: %s: %s.\n", 1109 progname, curdir, strerror(errno)); 1110 exit(2); 1111 } 1112 1113 /* 1114 * All this code is so that we know where we are when we start up 1115 * on a different machine with pmake. 1116 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1117 * since the value of curdir can vary depending on how we got 1118 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1119 * or via subdir.mk in which case its likely a shell which does 1120 * not provide it. 1121 * So, to stop it breaking this case only, we ignore PWD if 1122 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1123 */ 1124 #ifndef NO_PWD_OVERRIDE 1125 if (!ignorePWD) { 1126 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1127 1128 if ((pwd = getenv("PWD")) != NULL && 1129 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1130 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1131 VAR_CMD, &ptmp2); 1132 1133 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1134 if (stat(pwd, &sb) == 0 && 1135 sa.st_ino == sb.st_ino && 1136 sa.st_dev == sb.st_dev) 1137 (void)strncpy(curdir, pwd, MAXPATHLEN); 1138 } 1139 } 1140 free(ptmp1); 1141 free(ptmp2); 1142 } 1143 #endif 1144 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1145 1146 /* 1147 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1148 * MAKEOBJDIR is set in the environment, try only that value 1149 * and fall back to .CURDIR if it does not exist. 1150 * 1151 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1152 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1153 * of these paths exist, just use .CURDIR. 1154 */ 1155 Dir_Init(curdir); 1156 (void)Main_SetObjdir("%s", curdir); 1157 1158 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1159 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1160 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1161 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1162 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1163 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1164 1165 /* 1166 * Initialize archive, target and suffix modules in preparation for 1167 * parsing the makefile(s) 1168 */ 1169 Arch_Init(); 1170 Targ_Init(); 1171 Suff_Init(); 1172 Trace_Init(tracefile); 1173 1174 DEFAULT = NULL; 1175 (void)time(&now); 1176 1177 Trace_Log(MAKESTART, NULL); 1178 1179 /* 1180 * Set up the .TARGETS variable to contain the list of targets to be 1181 * created. If none specified, make the variable empty -- the parser 1182 * will fill the thing in with the default or .MAIN target. 1183 */ 1184 if (!Lst_IsEmpty(create)) { 1185 LstNode ln; 1186 1187 for (ln = Lst_First(create); ln != NULL; 1188 ln = Lst_Succ(ln)) { 1189 char *name = (char *)Lst_Datum(ln); 1190 1191 Var_Append(".TARGETS", name, VAR_GLOBAL); 1192 } 1193 } else 1194 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1195 1196 1197 /* 1198 * If no user-supplied system path was given (through the -m option) 1199 * add the directories from the DEFSYSPATH (more than one may be given 1200 * as dir1:...:dirn) to the system include path. 1201 */ 1202 if (syspath == NULL || *syspath == '\0') 1203 syspath = defsyspath; 1204 else 1205 syspath = bmake_strdup(syspath); 1206 1207 for (start = syspath; *start != '\0'; start = cp) { 1208 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1209 continue; 1210 if (*cp == ':') { 1211 *cp++ = '\0'; 1212 } 1213 /* look for magic parent directory search string */ 1214 if (strncmp(".../", start, 4) != 0) { 1215 (void)Dir_AddDir(defIncPath, start); 1216 } else { 1217 if (Dir_FindHereOrAbove(curdir, start+4, 1218 found_path, sizeof(found_path))) { 1219 (void)Dir_AddDir(defIncPath, found_path); 1220 } 1221 } 1222 } 1223 if (syspath != defsyspath) 1224 free(syspath); 1225 1226 /* 1227 * Read in the built-in rules first, followed by the specified 1228 * makefile, if it was (makefile != NULL), or the default 1229 * makefile and Makefile, in that order, if it wasn't. 1230 */ 1231 if (!noBuiltins) { 1232 LstNode ln; 1233 1234 sysMkPath = Lst_Init(FALSE); 1235 Dir_Expand(_PATH_DEFSYSMK, 1236 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1237 sysMkPath); 1238 if (Lst_IsEmpty(sysMkPath)) 1239 Fatal("%s: no system rules (%s).", progname, 1240 _PATH_DEFSYSMK); 1241 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1242 if (ln == NULL) 1243 Fatal("%s: cannot open %s.", progname, 1244 (char *)Lst_Datum(ln)); 1245 } 1246 1247 if (!Lst_IsEmpty(makefiles)) { 1248 LstNode ln; 1249 1250 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1251 if (ln != NULL) 1252 Fatal("%s: cannot open %s.", progname, 1253 (char *)Lst_Datum(ln)); 1254 } else { 1255 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1256 VAR_CMD, VARF_WANTRES); 1257 if (p1) { 1258 (void)str2Lst_Append(makefiles, p1, NULL); 1259 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1260 free(p1); 1261 } 1262 } 1263 1264 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1265 if (!noBuiltins || !printVars) { 1266 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1267 VAR_CMD, VARF_WANTRES); 1268 doing_depend = TRUE; 1269 (void)ReadMakefile(makeDependfile, NULL); 1270 doing_depend = FALSE; 1271 } 1272 1273 if (enterFlagObj) 1274 printf("%s: Entering directory `%s'\n", progname, objdir); 1275 1276 MakeMode(NULL); 1277 1278 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1279 free(p1); 1280 1281 if (!forceJobs && !compatMake && 1282 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1283 char *value; 1284 int n; 1285 1286 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1287 n = strtol(value, NULL, 0); 1288 if (n < 1) { 1289 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1290 progname); 1291 exit(1); 1292 } 1293 if (n != maxJobs) { 1294 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1295 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1296 } 1297 maxJobs = n; 1298 maxJobTokens = maxJobs; 1299 forceJobs = TRUE; 1300 free(value); 1301 } 1302 1303 /* 1304 * Be compatible if user did not specify -j and did not explicitly 1305 * turned compatibility on 1306 */ 1307 if (!compatMake && !forceJobs) { 1308 compatMake = TRUE; 1309 } 1310 1311 if (!compatMake) 1312 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1313 if (DEBUG(JOB)) 1314 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1315 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1316 1317 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1318 1319 /* 1320 * For compatibility, look at the directories in the VPATH variable 1321 * and add them to the search path, if the variable is defined. The 1322 * variable's value is in the same format as the PATH envariable, i.e. 1323 * <directory>:<directory>:<directory>... 1324 */ 1325 if (Var_Exists("VPATH", VAR_CMD)) { 1326 char *vpath, savec; 1327 /* 1328 * GCC stores string constants in read-only memory, but 1329 * Var_Subst will want to write this thing, so store it 1330 * in an array 1331 */ 1332 static char VPATH[] = "${VPATH}"; 1333 1334 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1335 path = vpath; 1336 do { 1337 /* skip to end of directory */ 1338 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1339 continue; 1340 /* Save terminator character so know when to stop */ 1341 savec = *cp; 1342 *cp = '\0'; 1343 /* Add directory to search path */ 1344 (void)Dir_AddDir(dirSearchPath, path); 1345 *cp = savec; 1346 path = cp + 1; 1347 } while (savec == ':'); 1348 free(vpath); 1349 } 1350 1351 /* 1352 * Now that all search paths have been read for suffixes et al, it's 1353 * time to add the default search path to their lists... 1354 */ 1355 Suff_DoPaths(); 1356 1357 /* 1358 * Propagate attributes through :: dependency lists. 1359 */ 1360 Targ_Propagate(); 1361 1362 /* print the initial graph, if the user requested it */ 1363 if (DEBUG(GRAPH1)) 1364 Targ_PrintGraph(1); 1365 1366 /* print the values of any variables requested by the user */ 1367 if (printVars) { 1368 LstNode ln; 1369 Boolean expandVars; 1370 1371 if (debugVflag) 1372 expandVars = FALSE; 1373 else 1374 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1375 for (ln = Lst_First(variables); ln != NULL; 1376 ln = Lst_Succ(ln)) { 1377 char *var = (char *)Lst_Datum(ln); 1378 char *value; 1379 1380 if (strchr(var, '$')) { 1381 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1382 VARF_WANTRES); 1383 } else if (expandVars) { 1384 char tmp[128]; 1385 1386 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1387 Fatal("%s: variable name too big: %s", 1388 progname, var); 1389 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1390 VARF_WANTRES); 1391 } else { 1392 value = Var_Value(var, VAR_GLOBAL, &p1); 1393 } 1394 printf("%s\n", value ? value : ""); 1395 free(p1); 1396 } 1397 } else { 1398 /* 1399 * Have now read the entire graph and need to make a list of 1400 * targets to create. If none was given on the command line, 1401 * we consult the parsing module to find the main target(s) 1402 * to create. 1403 */ 1404 if (Lst_IsEmpty(create)) 1405 targs = Parse_MainName(); 1406 else 1407 targs = Targ_FindList(create, TARG_CREATE); 1408 1409 if (!compatMake) { 1410 /* 1411 * Initialize job module before traversing the graph 1412 * now that any .BEGIN and .END targets have been read. 1413 * This is done only if the -q flag wasn't given 1414 * (to prevent the .BEGIN from being executed should 1415 * it exist). 1416 */ 1417 if (!queryFlag) { 1418 Job_Init(); 1419 jobsRunning = TRUE; 1420 } 1421 1422 /* Traverse the graph, checking on all the targets */ 1423 outOfDate = Make_Run(targs); 1424 } else { 1425 /* 1426 * Compat_Init will take care of creating all the 1427 * targets as well as initializing the module. 1428 */ 1429 Compat_Run(targs); 1430 } 1431 } 1432 1433 #ifdef CLEANUP 1434 Lst_Destroy(targs, NULL); 1435 Lst_Destroy(variables, NULL); 1436 Lst_Destroy(makefiles, NULL); 1437 Lst_Destroy(create, (FreeProc *)free); 1438 #endif 1439 1440 /* print the graph now it's been processed if the user requested it */ 1441 if (DEBUG(GRAPH2)) 1442 Targ_PrintGraph(2); 1443 1444 Trace_Log(MAKEEND, 0); 1445 1446 if (enterFlagObj) 1447 printf("%s: Leaving directory `%s'\n", progname, objdir); 1448 if (enterFlag) 1449 printf("%s: Leaving directory `%s'\n", progname, curdir); 1450 1451 #ifdef USE_META 1452 meta_finish(); 1453 #endif 1454 Suff_End(); 1455 Targ_End(); 1456 Arch_End(); 1457 Var_End(); 1458 Parse_End(); 1459 Dir_End(); 1460 Job_End(); 1461 Trace_End(); 1462 1463 return outOfDate ? 1 : 0; 1464 } 1465 1466 /*- 1467 * ReadMakefile -- 1468 * Open and parse the given makefile. 1469 * 1470 * Results: 1471 * 0 if ok. -1 if couldn't open file. 1472 * 1473 * Side Effects: 1474 * lots 1475 */ 1476 static int 1477 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1478 { 1479 const char *fname = p; /* makefile to read */ 1480 int fd; 1481 size_t len = MAXPATHLEN; 1482 char *name, *path = bmake_malloc(len); 1483 1484 if (!strcmp(fname, "-")) { 1485 Parse_File(NULL /*stdin*/, -1); 1486 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1487 } else { 1488 /* if we've chdir'd, rebuild the path name */ 1489 if (strcmp(curdir, objdir) && *fname != '/') { 1490 size_t plen = strlen(curdir) + strlen(fname) + 2; 1491 if (len < plen) 1492 path = bmake_realloc(path, len = 2 * plen); 1493 1494 (void)snprintf(path, len, "%s/%s", curdir, fname); 1495 fd = open(path, O_RDONLY); 1496 if (fd != -1) { 1497 fname = path; 1498 goto found; 1499 } 1500 1501 /* If curdir failed, try objdir (ala .depend) */ 1502 plen = strlen(objdir) + strlen(fname) + 2; 1503 if (len < plen) 1504 path = bmake_realloc(path, len = 2 * plen); 1505 (void)snprintf(path, len, "%s/%s", objdir, fname); 1506 fd = open(path, O_RDONLY); 1507 if (fd != -1) { 1508 fname = path; 1509 goto found; 1510 } 1511 } else { 1512 fd = open(fname, O_RDONLY); 1513 if (fd != -1) 1514 goto found; 1515 } 1516 /* look in -I and system include directories. */ 1517 name = Dir_FindFile(fname, parseIncPath); 1518 if (!name) 1519 name = Dir_FindFile(fname, 1520 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1521 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1522 free(name); 1523 free(path); 1524 return(-1); 1525 } 1526 fname = name; 1527 /* 1528 * set the MAKEFILE variable desired by System V fans -- the 1529 * placement of the setting here means it gets set to the last 1530 * makefile specified, as it is set by SysV make. 1531 */ 1532 found: 1533 if (!doing_depend) 1534 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1535 Parse_File(fname, fd); 1536 } 1537 free(path); 1538 return(0); 1539 } 1540 1541 1542 1543 /*- 1544 * Cmd_Exec -- 1545 * Execute the command in cmd, and return the output of that command 1546 * in a string. 1547 * 1548 * Results: 1549 * A string containing the output of the command, or the empty string 1550 * If errnum is not NULL, it contains the reason for the command failure 1551 * 1552 * Side Effects: 1553 * The string must be freed by the caller. 1554 */ 1555 char * 1556 Cmd_Exec(const char *cmd, const char **errnum) 1557 { 1558 const char *args[4]; /* Args for invoking the shell */ 1559 int fds[2]; /* Pipe streams */ 1560 int cpid; /* Child PID */ 1561 int pid; /* PID from wait() */ 1562 char *res; /* result */ 1563 WAIT_T status; /* command exit status */ 1564 Buffer buf; /* buffer to store the result */ 1565 char *cp; 1566 int cc; /* bytes read, or -1 */ 1567 int savederr; /* saved errno */ 1568 1569 1570 *errnum = NULL; 1571 1572 if (!shellName) 1573 Shell_Init(); 1574 /* 1575 * Set up arguments for shell 1576 */ 1577 args[0] = shellName; 1578 args[1] = "-c"; 1579 args[2] = cmd; 1580 args[3] = NULL; 1581 1582 /* 1583 * Open a pipe for fetching its output 1584 */ 1585 if (pipe(fds) == -1) { 1586 *errnum = "Couldn't create pipe for \"%s\""; 1587 goto bad; 1588 } 1589 1590 /* 1591 * Fork 1592 */ 1593 switch (cpid = vFork()) { 1594 case 0: 1595 /* 1596 * Close input side of pipe 1597 */ 1598 (void)close(fds[0]); 1599 1600 /* 1601 * Duplicate the output stream to the shell's output, then 1602 * shut the extra thing down. Note we don't fetch the error 1603 * stream...why not? Why? 1604 */ 1605 (void)dup2(fds[1], 1); 1606 (void)close(fds[1]); 1607 1608 Var_ExportVars(); 1609 1610 (void)execv(shellPath, UNCONST(args)); 1611 _exit(1); 1612 /*NOTREACHED*/ 1613 1614 case -1: 1615 *errnum = "Couldn't exec \"%s\""; 1616 goto bad; 1617 1618 default: 1619 /* 1620 * No need for the writing half 1621 */ 1622 (void)close(fds[1]); 1623 1624 savederr = 0; 1625 Buf_Init(&buf, 0); 1626 1627 do { 1628 char result[BUFSIZ]; 1629 cc = read(fds[0], result, sizeof(result)); 1630 if (cc > 0) 1631 Buf_AddBytes(&buf, cc, result); 1632 } 1633 while (cc > 0 || (cc == -1 && errno == EINTR)); 1634 if (cc == -1) 1635 savederr = errno; 1636 1637 /* 1638 * Close the input side of the pipe. 1639 */ 1640 (void)close(fds[0]); 1641 1642 /* 1643 * Wait for the process to exit. 1644 */ 1645 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1646 JobReapChild(pid, status, FALSE); 1647 continue; 1648 } 1649 cc = Buf_Size(&buf); 1650 res = Buf_Destroy(&buf, FALSE); 1651 1652 if (savederr != 0) 1653 *errnum = "Couldn't read shell's output for \"%s\""; 1654 1655 if (WIFSIGNALED(status)) 1656 *errnum = "\"%s\" exited on a signal"; 1657 else if (WEXITSTATUS(status) != 0) 1658 *errnum = "\"%s\" returned non-zero status"; 1659 1660 /* 1661 * Null-terminate the result, convert newlines to spaces and 1662 * install it in the variable. 1663 */ 1664 res[cc] = '\0'; 1665 cp = &res[cc]; 1666 1667 if (cc > 0 && *--cp == '\n') { 1668 /* 1669 * A final newline is just stripped 1670 */ 1671 *cp-- = '\0'; 1672 } 1673 while (cp >= res) { 1674 if (*cp == '\n') { 1675 *cp = ' '; 1676 } 1677 cp--; 1678 } 1679 break; 1680 } 1681 return res; 1682 bad: 1683 res = bmake_malloc(1); 1684 *res = '\0'; 1685 return res; 1686 } 1687 1688 /*- 1689 * Error -- 1690 * Print an error message given its format. 1691 * 1692 * Results: 1693 * None. 1694 * 1695 * Side Effects: 1696 * The message is printed. 1697 */ 1698 /* VARARGS */ 1699 void 1700 Error(const char *fmt, ...) 1701 { 1702 va_list ap; 1703 FILE *err_file; 1704 1705 err_file = debug_file; 1706 if (err_file == stdout) 1707 err_file = stderr; 1708 (void)fflush(stdout); 1709 for (;;) { 1710 va_start(ap, fmt); 1711 fprintf(err_file, "%s: ", progname); 1712 (void)vfprintf(err_file, fmt, ap); 1713 va_end(ap); 1714 (void)fprintf(err_file, "\n"); 1715 (void)fflush(err_file); 1716 if (err_file == stderr) 1717 break; 1718 err_file = stderr; 1719 } 1720 } 1721 1722 /*- 1723 * Fatal -- 1724 * Produce a Fatal error message. If jobs are running, waits for them 1725 * to finish. 1726 * 1727 * Results: 1728 * None 1729 * 1730 * Side Effects: 1731 * The program exits 1732 */ 1733 /* VARARGS */ 1734 void 1735 Fatal(const char *fmt, ...) 1736 { 1737 va_list ap; 1738 1739 va_start(ap, fmt); 1740 if (jobsRunning) 1741 Job_Wait(); 1742 1743 (void)fflush(stdout); 1744 (void)vfprintf(stderr, fmt, ap); 1745 va_end(ap); 1746 (void)fprintf(stderr, "\n"); 1747 (void)fflush(stderr); 1748 1749 PrintOnError(NULL, NULL); 1750 1751 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1752 Targ_PrintGraph(2); 1753 Trace_Log(MAKEERROR, 0); 1754 exit(2); /* Not 1 so -q can distinguish error */ 1755 } 1756 1757 /* 1758 * Punt -- 1759 * Major exception once jobs are being created. Kills all jobs, prints 1760 * a message and exits. 1761 * 1762 * Results: 1763 * None 1764 * 1765 * Side Effects: 1766 * All children are killed indiscriminately and the program Lib_Exits 1767 */ 1768 /* VARARGS */ 1769 void 1770 Punt(const char *fmt, ...) 1771 { 1772 va_list ap; 1773 1774 va_start(ap, fmt); 1775 (void)fflush(stdout); 1776 (void)fprintf(stderr, "%s: ", progname); 1777 (void)vfprintf(stderr, fmt, ap); 1778 va_end(ap); 1779 (void)fprintf(stderr, "\n"); 1780 (void)fflush(stderr); 1781 1782 PrintOnError(NULL, NULL); 1783 1784 DieHorribly(); 1785 } 1786 1787 /*- 1788 * DieHorribly -- 1789 * Exit without giving a message. 1790 * 1791 * Results: 1792 * None 1793 * 1794 * Side Effects: 1795 * A big one... 1796 */ 1797 void 1798 DieHorribly(void) 1799 { 1800 if (jobsRunning) 1801 Job_AbortAll(); 1802 if (DEBUG(GRAPH2)) 1803 Targ_PrintGraph(2); 1804 Trace_Log(MAKEERROR, 0); 1805 exit(2); /* Not 1, so -q can distinguish error */ 1806 } 1807 1808 /* 1809 * Finish -- 1810 * Called when aborting due to errors in child shell to signal 1811 * abnormal exit. 1812 * 1813 * Results: 1814 * None 1815 * 1816 * Side Effects: 1817 * The program exits 1818 */ 1819 void 1820 Finish(int errors) 1821 /* number of errors encountered in Make_Make */ 1822 { 1823 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1824 } 1825 1826 /* 1827 * eunlink -- 1828 * Remove a file carefully, avoiding directories. 1829 */ 1830 int 1831 eunlink(const char *file) 1832 { 1833 struct stat st; 1834 1835 if (lstat(file, &st) == -1) 1836 return -1; 1837 1838 if (S_ISDIR(st.st_mode)) { 1839 errno = EISDIR; 1840 return -1; 1841 } 1842 return unlink(file); 1843 } 1844 1845 /* 1846 * execError -- 1847 * Print why exec failed, avoiding stdio. 1848 */ 1849 void 1850 execError(const char *af, const char *av) 1851 { 1852 #ifdef USE_IOVEC 1853 int i = 0; 1854 struct iovec iov[8]; 1855 #define IOADD(s) \ 1856 (void)(iov[i].iov_base = UNCONST(s), \ 1857 iov[i].iov_len = strlen(iov[i].iov_base), \ 1858 i++) 1859 #else 1860 #define IOADD(s) (void)write(2, s, strlen(s)) 1861 #endif 1862 1863 IOADD(progname); 1864 IOADD(": "); 1865 IOADD(af); 1866 IOADD("("); 1867 IOADD(av); 1868 IOADD(") failed ("); 1869 IOADD(strerror(errno)); 1870 IOADD(")\n"); 1871 1872 #ifdef USE_IOVEC 1873 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1874 continue; 1875 #endif 1876 } 1877 1878 /* 1879 * usage -- 1880 * exit with usage message 1881 */ 1882 static void 1883 usage(void) 1884 { 1885 char *p; 1886 if ((p = strchr(progname, '[')) != NULL) 1887 *p = '\0'; 1888 1889 (void)fprintf(stderr, 1890 "usage: %s [-BeikNnqrstWwX] \n\ 1891 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1892 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1893 [-V variable] [variable=value] [target ...]\n", progname); 1894 exit(2); 1895 } 1896 1897 1898 /* 1899 * realpath(3) can get expensive, cache results... 1900 */ 1901 char * 1902 cached_realpath(const char *pathname, char *resolved) 1903 { 1904 static GNode *cache; 1905 char *rp, *cp; 1906 1907 if (!pathname || !pathname[0]) 1908 return NULL; 1909 1910 if (!cache) { 1911 cache = Targ_NewGN("Realpath"); 1912 #ifndef DEBUG_REALPATH_CACHE 1913 cache->flags = INTERNAL; 1914 #endif 1915 } 1916 1917 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1918 /* a hit */ 1919 strlcpy(resolved, rp, MAXPATHLEN); 1920 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1921 Var_Set(pathname, rp, cache, 0); 1922 } 1923 free(cp); 1924 return rp ? resolved : NULL; 1925 } 1926 1927 int 1928 PrintAddr(void *a, void *b) 1929 { 1930 printf("%lx ", (unsigned long) a); 1931 return b ? 0 : 0; 1932 } 1933 1934 1935 static int 1936 addErrorCMD(void *cmdp, void *gnp) 1937 { 1938 if (cmdp == NULL) 1939 return 1; /* stop */ 1940 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1941 return 0; 1942 } 1943 1944 void 1945 PrintOnError(GNode *gn, const char *s) 1946 { 1947 static GNode *en = NULL; 1948 char tmp[64]; 1949 char *cp; 1950 1951 if (s) 1952 printf("%s", s); 1953 1954 printf("\n%s: stopped in %s\n", progname, curdir); 1955 1956 if (en) 1957 return; /* we've been here! */ 1958 if (gn) { 1959 /* 1960 * We can print this even if there is no .ERROR target. 1961 */ 1962 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1963 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 1964 Lst_ForEach(gn->commands, addErrorCMD, gn); 1965 } 1966 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1967 sizeof(tmp) - 1); 1968 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 1969 if (cp) { 1970 if (*cp) 1971 printf("%s", cp); 1972 free(cp); 1973 } 1974 fflush(stdout); 1975 1976 /* 1977 * Finally, see if there is a .ERROR target, and run it if so. 1978 */ 1979 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1980 if (en) { 1981 en->type |= OP_SPECIAL; 1982 Compat_Make(en, en); 1983 } 1984 } 1985 1986 void 1987 Main_ExportMAKEFLAGS(Boolean first) 1988 { 1989 static int once = 1; 1990 char tmp[64]; 1991 char *s; 1992 1993 if (once != first) 1994 return; 1995 once = 0; 1996 1997 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1998 sizeof(tmp)); 1999 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 2000 if (s && *s) { 2001 #ifdef POSIX 2002 setenv("MAKEFLAGS", s, 1); 2003 #else 2004 setenv("MAKE", s, 1); 2005 #endif 2006 } 2007 } 2008 2009 char * 2010 getTmpdir(void) 2011 { 2012 static char *tmpdir = NULL; 2013 2014 if (!tmpdir) { 2015 struct stat st; 2016 2017 /* 2018 * Honor $TMPDIR but only if it is valid. 2019 * Ensure it ends with /. 2020 */ 2021 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2022 VARF_WANTRES); 2023 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2024 free(tmpdir); 2025 tmpdir = bmake_strdup(_PATH_TMP); 2026 } 2027 } 2028 return tmpdir; 2029 } 2030 2031 /* 2032 * Create and open a temp file using "pattern". 2033 * If "fnamep" is provided set it to a copy of the filename created. 2034 * Otherwise unlink the file once open. 2035 */ 2036 int 2037 mkTempFile(const char *pattern, char **fnamep) 2038 { 2039 static char *tmpdir = NULL; 2040 char tfile[MAXPATHLEN]; 2041 int fd; 2042 2043 if (!pattern) 2044 pattern = TMPPAT; 2045 if (!tmpdir) 2046 tmpdir = getTmpdir(); 2047 if (pattern[0] == '/') { 2048 snprintf(tfile, sizeof(tfile), "%s", pattern); 2049 } else { 2050 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2051 } 2052 if ((fd = mkstemp(tfile)) < 0) 2053 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2054 if (fnamep) { 2055 *fnamep = bmake_strdup(tfile); 2056 } else { 2057 unlink(tfile); /* we just want the descriptor */ 2058 } 2059 return fd; 2060 } 2061 2062 /* 2063 * Convert a string representation of a boolean. 2064 * Anything that looks like "No", "False", "Off", "0" etc, 2065 * is FALSE, otherwise TRUE. 2066 */ 2067 Boolean 2068 s2Boolean(const char *s, Boolean bf) 2069 { 2070 if (s) { 2071 switch(*s) { 2072 case '\0': /* not set - the default wins */ 2073 break; 2074 case '0': 2075 case 'F': 2076 case 'f': 2077 case 'N': 2078 case 'n': 2079 bf = FALSE; 2080 break; 2081 case 'O': 2082 case 'o': 2083 switch (s[1]) { 2084 case 'F': 2085 case 'f': 2086 bf = FALSE; 2087 break; 2088 default: 2089 bf = TRUE; 2090 break; 2091 } 2092 break; 2093 default: 2094 bf = TRUE; 2095 break; 2096 } 2097 } 2098 return (bf); 2099 } 2100 2101 /* 2102 * Return a Boolean based on setting of a knob. 2103 * 2104 * If the knob is not set, the supplied default is the return value. 2105 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2106 * is FALSE, otherwise TRUE. 2107 */ 2108 Boolean 2109 getBoolean(const char *name, Boolean bf) 2110 { 2111 char tmp[64]; 2112 char *cp; 2113 2114 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2115 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2116 2117 if (cp) { 2118 bf = s2Boolean(cp, bf); 2119 free(cp); 2120 } 2121 } 2122 return (bf); 2123 } 2124