1 /* $NetBSD: main.c,v 1.250 2016/08/11 19:53:17 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 1.250 2016/08/11 19:53:17 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 1.250 2016/08/11 19:53:17 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 #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 */ 158 159 static Boolean noBuiltins; /* -r flag */ 160 static Lst makefiles; /* ordered list of makefiles to read */ 161 static Boolean printVars; /* print value of one or more vars */ 162 static Lst variables; /* list of variables to print */ 163 int maxJobs; /* -j argument */ 164 static int maxJobTokens; /* -j argument */ 165 Boolean compatMake; /* -B argument */ 166 int debug; /* -d argument */ 167 Boolean debugVflag; /* -dV */ 168 Boolean noExecute; /* -n flag */ 169 Boolean noRecursiveExecute; /* -N flag */ 170 Boolean keepgoing; /* -k flag */ 171 Boolean queryFlag; /* -q flag */ 172 Boolean touchFlag; /* -t flag */ 173 Boolean enterFlag; /* -w flag */ 174 Boolean enterFlagObj; /* -w and objdir != srcdir */ 175 Boolean ignoreErrors; /* -i flag */ 176 Boolean beSilent; /* -s flag */ 177 Boolean oldVars; /* variable substitution style */ 178 Boolean checkEnvFirst; /* -e flag */ 179 Boolean parseWarnFatal; /* -W flag */ 180 Boolean jobServer; /* -J flag */ 181 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 182 Boolean varNoExportEnv; /* -X flag */ 183 Boolean doing_depend; /* Set while reading .depend */ 184 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 185 static const char * tracefile; 186 static void MainParseArgs(int, char **); 187 static int ReadMakefile(const void *, const void *); 188 static void usage(void) MAKE_ATTR_DEAD; 189 190 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 191 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 192 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 193 char *progname; /* the program name */ 194 char *makeDependfile; 195 pid_t myPid; 196 int makelevel; 197 198 Boolean forceJobs = FALSE; 199 200 /* 201 * On some systems MACHINE is defined as something other than 202 * what we want. 203 */ 204 #ifdef FORCE_MACHINE 205 # undef MACHINE 206 # define MACHINE FORCE_MACHINE 207 #endif 208 209 extern Lst parseIncPath; 210 211 /* 212 * For compatibility with the POSIX version of MAKEFLAGS that includes 213 * all the options with out -, convert flags to -f -l -a -g -s. 214 */ 215 static char * 216 explode(const char *flags) 217 { 218 size_t len; 219 char *nf, *st; 220 const char *f; 221 222 if (flags == NULL) 223 return NULL; 224 225 for (f = flags; *f; f++) 226 if (!isalpha((unsigned char)*f)) 227 break; 228 229 if (*f) 230 return bmake_strdup(flags); 231 232 len = strlen(flags); 233 st = nf = bmake_malloc(len * 3 + 1); 234 while (*flags) { 235 *nf++ = '-'; 236 *nf++ = *flags++; 237 *nf++ = ' '; 238 } 239 *nf = '\0'; 240 return st; 241 } 242 243 static void 244 parse_debug_options(const char *argvalue) 245 { 246 const char *modules; 247 const char *mode; 248 char *fname; 249 int len; 250 251 for (modules = argvalue; *modules; ++modules) { 252 switch (*modules) { 253 case 'A': 254 debug = ~0; 255 break; 256 case 'a': 257 debug |= DEBUG_ARCH; 258 break; 259 case 'C': 260 debug |= DEBUG_CWD; 261 break; 262 case 'c': 263 debug |= DEBUG_COND; 264 break; 265 case 'd': 266 debug |= DEBUG_DIR; 267 break; 268 case 'e': 269 debug |= DEBUG_ERROR; 270 break; 271 case 'f': 272 debug |= DEBUG_FOR; 273 break; 274 case 'g': 275 if (modules[1] == '1') { 276 debug |= DEBUG_GRAPH1; 277 ++modules; 278 } 279 else if (modules[1] == '2') { 280 debug |= DEBUG_GRAPH2; 281 ++modules; 282 } 283 else if (modules[1] == '3') { 284 debug |= DEBUG_GRAPH3; 285 ++modules; 286 } 287 break; 288 case 'j': 289 debug |= DEBUG_JOB; 290 break; 291 case 'l': 292 debug |= DEBUG_LOUD; 293 break; 294 case 'M': 295 debug |= DEBUG_META; 296 break; 297 case 'm': 298 debug |= DEBUG_MAKE; 299 break; 300 case 'n': 301 debug |= DEBUG_SCRIPT; 302 break; 303 case 'p': 304 debug |= DEBUG_PARSE; 305 break; 306 case 's': 307 debug |= DEBUG_SUFF; 308 break; 309 case 't': 310 debug |= DEBUG_TARG; 311 break; 312 case 'V': 313 debugVflag = TRUE; 314 break; 315 case 'v': 316 debug |= DEBUG_VAR; 317 break; 318 case 'x': 319 debug |= DEBUG_SHELL; 320 break; 321 case 'F': 322 if (debug_file != stdout && debug_file != stderr) 323 fclose(debug_file); 324 if (*++modules == '+') { 325 modules++; 326 mode = "a"; 327 } else 328 mode = "w"; 329 if (strcmp(modules, "stdout") == 0) { 330 debug_file = stdout; 331 goto debug_setbuf; 332 } 333 if (strcmp(modules, "stderr") == 0) { 334 debug_file = stderr; 335 goto debug_setbuf; 336 } 337 len = strlen(modules); 338 fname = malloc(len + 20); 339 memcpy(fname, modules, len + 1); 340 /* Let the filename be modified by the pid */ 341 if (strcmp(fname + len - 3, ".%d") == 0) 342 snprintf(fname + len - 2, 20, "%d", getpid()); 343 debug_file = fopen(fname, mode); 344 if (!debug_file) { 345 fprintf(stderr, "Cannot open debug file %s\n", 346 fname); 347 usage(); 348 } 349 free(fname); 350 goto debug_setbuf; 351 default: 352 (void)fprintf(stderr, 353 "%s: illegal argument to d option -- %c\n", 354 progname, *modules); 355 usage(); 356 } 357 } 358 debug_setbuf: 359 /* 360 * Make the debug_file unbuffered, and make 361 * stdout line buffered (unless debugfile == stdout). 362 */ 363 setvbuf(debug_file, NULL, _IONBF, 0); 364 if (debug_file != stdout) { 365 setvbuf(stdout, NULL, _IOLBF, 0); 366 } 367 } 368 369 /*- 370 * MainParseArgs -- 371 * Parse a given argument vector. Called from main() and from 372 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 373 * 374 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 375 * 376 * Results: 377 * None 378 * 379 * Side Effects: 380 * Various global and local flags will be set depending on the flags 381 * given 382 */ 383 static void 384 MainParseArgs(int argc, char **argv) 385 { 386 char *p; 387 int c = '?'; 388 int arginc; 389 char *argvalue; 390 const char *getopt_def; 391 char *optscan; 392 Boolean inOption, dashDash = FALSE; 393 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 394 395 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 396 /* Can't actually use getopt(3) because rescanning is not portable */ 397 398 getopt_def = OPTFLAGS; 399 rearg: 400 inOption = FALSE; 401 optscan = NULL; 402 while(argc > 1) { 403 char *getopt_spec; 404 if(!inOption) 405 optscan = argv[1]; 406 c = *optscan++; 407 arginc = 0; 408 if(inOption) { 409 if(c == '\0') { 410 ++argv; 411 --argc; 412 inOption = FALSE; 413 continue; 414 } 415 } else { 416 if (c != '-' || dashDash) 417 break; 418 inOption = TRUE; 419 c = *optscan++; 420 } 421 /* '-' found at some earlier point */ 422 getopt_spec = strchr(getopt_def, c); 423 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 424 /* -<something> found, and <something> should have an arg */ 425 inOption = FALSE; 426 arginc = 1; 427 argvalue = optscan; 428 if(*argvalue == '\0') { 429 if (argc < 3) 430 goto noarg; 431 argvalue = argv[2]; 432 arginc = 2; 433 } 434 } else { 435 argvalue = NULL; 436 } 437 switch(c) { 438 case '\0': 439 arginc = 1; 440 inOption = FALSE; 441 break; 442 case 'B': 443 compatMake = TRUE; 444 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 445 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 446 break; 447 case 'C': 448 if (chdir(argvalue) == -1) { 449 (void)fprintf(stderr, 450 "%s: chdir %s: %s\n", 451 progname, argvalue, 452 strerror(errno)); 453 exit(1); 454 } 455 if (getcwd(curdir, MAXPATHLEN) == NULL) { 456 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 457 exit(2); 458 } 459 ignorePWD = TRUE; 460 break; 461 case 'D': 462 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 463 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 464 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 465 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 466 break; 467 case 'I': 468 if (argvalue == NULL) goto noarg; 469 Parse_AddIncludeDir(argvalue); 470 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 471 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 472 break; 473 case 'J': 474 if (argvalue == NULL) goto noarg; 475 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 476 (void)fprintf(stderr, 477 "%s: internal error -- J option malformed (%s)\n", 478 progname, argvalue); 479 usage(); 480 } 481 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 482 (fcntl(jp_1, F_GETFD, 0) < 0)) { 483 #if 0 484 (void)fprintf(stderr, 485 "%s: ###### warning -- J descriptors were closed!\n", 486 progname); 487 exit(2); 488 #endif 489 jp_0 = -1; 490 jp_1 = -1; 491 compatMake = TRUE; 492 } else { 493 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 494 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 495 jobServer = TRUE; 496 } 497 break; 498 case 'N': 499 noExecute = TRUE; 500 noRecursiveExecute = TRUE; 501 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 502 break; 503 case 'S': 504 keepgoing = FALSE; 505 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 506 break; 507 case 'T': 508 if (argvalue == NULL) goto noarg; 509 tracefile = bmake_strdup(argvalue); 510 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 511 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 512 break; 513 case 'V': 514 if (argvalue == NULL) goto noarg; 515 printVars = TRUE; 516 (void)Lst_AtEnd(variables, argvalue); 517 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 518 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 519 break; 520 case 'W': 521 parseWarnFatal = TRUE; 522 break; 523 case 'X': 524 varNoExportEnv = TRUE; 525 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 526 break; 527 case 'd': 528 if (argvalue == NULL) goto noarg; 529 /* If '-d-opts' don't pass to children */ 530 if (argvalue[0] == '-') 531 argvalue++; 532 else { 533 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 534 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 535 } 536 parse_debug_options(argvalue); 537 break; 538 case 'e': 539 checkEnvFirst = TRUE; 540 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 541 break; 542 case 'f': 543 if (argvalue == NULL) goto noarg; 544 (void)Lst_AtEnd(makefiles, argvalue); 545 break; 546 case 'i': 547 ignoreErrors = TRUE; 548 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 549 break; 550 case 'j': 551 if (argvalue == NULL) goto noarg; 552 forceJobs = TRUE; 553 maxJobs = strtol(argvalue, &p, 0); 554 if (*p != '\0' || maxJobs < 1) { 555 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 556 progname); 557 exit(1); 558 } 559 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 560 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 561 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 562 maxJobTokens = maxJobs; 563 break; 564 case 'k': 565 keepgoing = TRUE; 566 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 567 break; 568 case 'm': 569 if (argvalue == NULL) goto noarg; 570 /* look for magic parent directory search string */ 571 if (strncmp(".../", argvalue, 4) == 0) { 572 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 573 found_path, sizeof(found_path))) 574 break; /* nothing doing */ 575 (void)Dir_AddDir(sysIncPath, found_path); 576 } else { 577 (void)Dir_AddDir(sysIncPath, argvalue); 578 } 579 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 580 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 581 break; 582 case 'n': 583 noExecute = TRUE; 584 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 585 break; 586 case 'q': 587 queryFlag = TRUE; 588 /* Kind of nonsensical, wot? */ 589 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 590 break; 591 case 'r': 592 noBuiltins = TRUE; 593 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 594 break; 595 case 's': 596 beSilent = TRUE; 597 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 598 break; 599 case 't': 600 touchFlag = TRUE; 601 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 602 break; 603 case 'w': 604 enterFlag = TRUE; 605 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 606 break; 607 case '-': 608 dashDash = TRUE; 609 break; 610 default: 611 case '?': 612 #ifndef MAKE_NATIVE 613 fprintf(stderr, "getopt(%s) -> %d (%c)\n", 614 OPTFLAGS, c, c); 615 #endif 616 usage(); 617 } 618 argv += arginc; 619 argc -= arginc; 620 } 621 622 oldVars = TRUE; 623 624 /* 625 * See if the rest of the arguments are variable assignments and 626 * perform them if so. Else take them to be targets and stuff them 627 * on the end of the "create" list. 628 */ 629 for (; argc > 1; ++argv, --argc) 630 if (Parse_IsVar(argv[1])) { 631 Parse_DoVar(argv[1], VAR_CMD); 632 } else { 633 if (!*argv[1]) 634 Punt("illegal (null) argument."); 635 if (*argv[1] == '-' && !dashDash) 636 goto rearg; 637 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 638 } 639 640 return; 641 noarg: 642 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 643 progname, c); 644 usage(); 645 } 646 647 /*- 648 * Main_ParseArgLine -- 649 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 650 * is encountered and by main() when reading the .MAKEFLAGS envariable. 651 * Takes a line of arguments and breaks it into its 652 * component words and passes those words and the number of them to the 653 * MainParseArgs function. 654 * The line should have all its leading whitespace removed. 655 * 656 * Input: 657 * line Line to fracture 658 * 659 * Results: 660 * None 661 * 662 * Side Effects: 663 * Only those that come from the various arguments. 664 */ 665 void 666 Main_ParseArgLine(const char *line) 667 { 668 char **argv; /* Manufactured argument vector */ 669 int argc; /* Number of arguments in argv */ 670 char *args; /* Space used by the args */ 671 char *buf, *p1; 672 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 673 size_t len; 674 675 if (line == NULL) 676 return; 677 for (; *line == ' '; ++line) 678 continue; 679 if (!*line) 680 return; 681 682 #ifndef POSIX 683 { 684 /* 685 * $MAKE may simply be naming the make(1) binary 686 */ 687 char *cp; 688 689 if (!(cp = strrchr(line, '/'))) 690 cp = line; 691 if ((cp = strstr(cp, "make")) && 692 strcmp(cp, "make") == 0) 693 return; 694 } 695 #endif 696 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 697 (void)snprintf(buf, len, "%s %s", argv0, line); 698 free(p1); 699 700 argv = brk_string(buf, &argc, TRUE, &args); 701 if (argv == NULL) { 702 Error("Unterminated quoted string [%s]", buf); 703 free(buf); 704 return; 705 } 706 free(buf); 707 MainParseArgs(argc, argv); 708 709 free(args); 710 free(argv); 711 } 712 713 Boolean 714 Main_SetObjdir(const char *path) 715 { 716 struct stat sb; 717 char *p = NULL; 718 char buf[MAXPATHLEN + 1]; 719 Boolean rc = FALSE; 720 721 /* expand variable substitutions */ 722 if (strchr(path, '$') != 0) { 723 snprintf(buf, MAXPATHLEN, "%s", path); 724 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, VARF_WANTRES); 725 } 726 727 if (path[0] != '/') { 728 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 729 path = buf; 730 } 731 732 /* look for the directory and try to chdir there */ 733 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 734 if (chdir(path)) { 735 (void)fprintf(stderr, "make warning: %s: %s.\n", 736 path, strerror(errno)); 737 } else { 738 strncpy(objdir, path, MAXPATHLEN); 739 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 740 setenv("PWD", objdir, 1); 741 Dir_InitDot(); 742 rc = TRUE; 743 if (enterFlag && strcmp(objdir, curdir) != 0) 744 enterFlagObj = TRUE; 745 } 746 } 747 748 free(p); 749 return rc; 750 } 751 752 /*- 753 * ReadAllMakefiles -- 754 * wrapper around ReadMakefile() to read all. 755 * 756 * Results: 757 * TRUE if ok, FALSE on error 758 */ 759 static int 760 ReadAllMakefiles(const void *p, const void *q) 761 { 762 return (ReadMakefile(p, q) == 0); 763 } 764 765 int 766 str2Lst_Append(Lst lp, char *str, const char *sep) 767 { 768 char *cp; 769 int n; 770 771 if (!sep) 772 sep = " \t"; 773 774 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 775 (void)Lst_AtEnd(lp, cp); 776 n++; 777 } 778 return (n); 779 } 780 781 #ifdef SIGINFO 782 /*ARGSUSED*/ 783 static void 784 siginfo(int signo MAKE_ATTR_UNUSED) 785 { 786 char dir[MAXPATHLEN]; 787 char str[2 * MAXPATHLEN]; 788 int len; 789 if (getcwd(dir, sizeof(dir)) == NULL) 790 return; 791 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 792 if (len > 0) 793 (void)write(STDERR_FILENO, str, (size_t)len); 794 } 795 #endif 796 797 /* 798 * Allow makefiles some control over the mode we run in. 799 */ 800 void 801 MakeMode(const char *mode) 802 { 803 char *mp = NULL; 804 805 if (!mode) 806 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 807 VAR_GLOBAL, VARF_WANTRES); 808 809 if (mode && *mode) { 810 if (strstr(mode, "compat")) { 811 compatMake = TRUE; 812 forceJobs = FALSE; 813 } 814 #if USE_META 815 if (strstr(mode, "meta")) 816 meta_mode_init(mode); 817 #endif 818 } 819 820 free(mp); 821 } 822 823 /*- 824 * main -- 825 * The main function, for obvious reasons. Initializes variables 826 * and a few modules, then parses the arguments give it in the 827 * environment and on the command line. Reads the system makefile 828 * followed by either Makefile, makefile or the file given by the 829 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 830 * flags it has received by then uses either the Make or the Compat 831 * module to create the initial list of targets. 832 * 833 * Results: 834 * If -q was given, exits -1 if anything was out-of-date. Else it exits 835 * 0. 836 * 837 * Side Effects: 838 * The program exits when done. Targets are created. etc. etc. etc. 839 */ 840 int 841 main(int argc, char **argv) 842 { 843 Lst targs; /* target nodes to create -- passed to Make_Init */ 844 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 845 struct stat sb, sa; 846 char *p1, *path; 847 char mdpath[MAXPATHLEN]; 848 #ifdef FORCE_MACHINE 849 const char *machine = FORCE_MACHINE; 850 #else 851 const char *machine = getenv("MACHINE"); 852 #endif 853 const char *machine_arch = getenv("MACHINE_ARCH"); 854 char *syspath = getenv("MAKESYSPATH"); 855 Lst sysMkPath; /* Path of sys.mk */ 856 char *cp = NULL, *start; 857 /* avoid faults on read-only strings */ 858 static char defsyspath[] = _PATH_DEFSYSPATH; 859 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 860 struct timeval rightnow; /* to initialize random seed */ 861 struct utsname utsname; 862 863 /* default to writing debug to stderr */ 864 debug_file = stderr; 865 866 #ifdef SIGINFO 867 (void)bmake_signal(SIGINFO, siginfo); 868 #endif 869 /* 870 * Set the seed to produce a different random sequence 871 * on each program execution. 872 */ 873 gettimeofday(&rightnow, NULL); 874 srandom(rightnow.tv_sec + rightnow.tv_usec); 875 876 if ((progname = strrchr(argv[0], '/')) != NULL) 877 progname++; 878 else 879 progname = argv[0]; 880 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 881 /* 882 * get rid of resource limit on file descriptors 883 */ 884 { 885 struct rlimit rl; 886 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 887 rl.rlim_cur != rl.rlim_max) { 888 rl.rlim_cur = rl.rlim_max; 889 (void)setrlimit(RLIMIT_NOFILE, &rl); 890 } 891 } 892 #endif 893 894 if (uname(&utsname) == -1) { 895 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 896 strerror(errno)); 897 exit(2); 898 } 899 900 /* 901 * Get the name of this type of MACHINE from utsname 902 * so we can share an executable for similar machines. 903 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 904 * 905 * Note that both MACHINE and MACHINE_ARCH are decided at 906 * run-time. 907 */ 908 if (!machine) { 909 #ifdef MAKE_NATIVE 910 machine = utsname.machine; 911 #else 912 #ifdef MAKE_MACHINE 913 machine = MAKE_MACHINE; 914 #else 915 machine = "unknown"; 916 #endif 917 #endif 918 } 919 920 if (!machine_arch) { 921 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH) 922 static char machine_arch_buf[sizeof(utsname.machine)]; 923 int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 924 size_t len = sizeof(machine_arch_buf); 925 926 if (sysctl(__DECONST(int *, mib) /* XXX */, __arraycount(mib), machine_arch_buf, 927 &len, NULL, 0) < 0) { 928 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 929 strerror(errno)); 930 exit(2); 931 } 932 933 machine_arch = machine_arch_buf; 934 #else 935 #ifndef MACHINE_ARCH 936 #ifdef MAKE_MACHINE_ARCH 937 machine_arch = MAKE_MACHINE_ARCH; 938 #else 939 machine_arch = "unknown"; 940 #endif 941 #else 942 machine_arch = MACHINE_ARCH; 943 #endif 944 #endif 945 } 946 947 myPid = getpid(); /* remember this for vFork() */ 948 949 /* 950 * Just in case MAKEOBJDIR wants us to do something tricky. 951 */ 952 Var_Init(); /* Initialize the lists of variables for 953 * parsing arguments */ 954 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 955 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 956 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 957 #ifdef MAKE_VERSION 958 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 959 #endif 960 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 961 /* 962 * This is the traditional preference for makefiles. 963 */ 964 #ifndef MAKEFILE_PREFERENCE_LIST 965 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 966 #endif 967 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 968 VAR_GLOBAL, 0); 969 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 970 971 create = Lst_Init(FALSE); 972 makefiles = Lst_Init(FALSE); 973 printVars = FALSE; 974 debugVflag = FALSE; 975 variables = Lst_Init(FALSE); 976 beSilent = FALSE; /* Print commands as executed */ 977 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 978 noExecute = FALSE; /* Execute all commands */ 979 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 980 keepgoing = FALSE; /* Stop on error */ 981 allPrecious = FALSE; /* Remove targets when interrupted */ 982 queryFlag = FALSE; /* This is not just a check-run */ 983 noBuiltins = FALSE; /* Read the built-in rules */ 984 touchFlag = FALSE; /* Actually update targets */ 985 debug = 0; /* No debug verbosity, please. */ 986 jobsRunning = FALSE; 987 988 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 989 maxJobTokens = maxJobs; 990 compatMake = FALSE; /* No compat mode */ 991 ignorePWD = FALSE; 992 993 /* 994 * Initialize the parsing, directory and variable modules to prepare 995 * for the reading of inclusion paths and variable settings on the 996 * command line 997 */ 998 999 /* 1000 * Initialize various variables. 1001 * MAKE also gets this name, for compatibility 1002 * .MAKEFLAGS gets set to the empty string just in case. 1003 * MFLAGS also gets initialized empty, for compatibility. 1004 */ 1005 Parse_Init(); 1006 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1007 /* 1008 * Leave alone if it is an absolute path, or if it does 1009 * not contain a '/' in which case we need to find it in 1010 * the path, like execvp(3) and the shells do. 1011 */ 1012 p1 = argv[0]; 1013 } else { 1014 /* 1015 * A relative path, canonicalize it. 1016 */ 1017 p1 = cached_realpath(argv[0], mdpath); 1018 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1019 p1 = argv[0]; /* realpath failed */ 1020 } 1021 } 1022 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1023 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1024 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1025 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1026 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1027 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1028 /* some makefiles need to know this */ 1029 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1030 1031 /* 1032 * Set some other useful macros 1033 */ 1034 { 1035 char tmp[64], *ep; 1036 1037 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1038 if (makelevel < 0) 1039 makelevel = 0; 1040 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1041 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1042 snprintf(tmp, sizeof(tmp), "%u", myPid); 1043 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1044 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1045 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1046 Var_Set(".MAKE.BUILT.BY", CCVER, VAR_GLOBAL, 0); 1047 Var_Set(".MAKE.DF.VERSION", DFVER, VAR_GLOBAL, 0); 1048 Var_Set(".MAKE.DF.OSREL", OSREL, VAR_GLOBAL, 0); 1049 } 1050 if (makelevel > 0) { 1051 char pn[1024]; 1052 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1053 progname = bmake_strdup(pn); 1054 } 1055 1056 #ifdef USE_META 1057 meta_init(); 1058 #endif 1059 /* 1060 * First snag any flags out of the MAKE environment variable. 1061 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1062 * in a different format). 1063 */ 1064 #ifdef POSIX 1065 p1 = explode(getenv("MAKEFLAGS")); 1066 Main_ParseArgLine(p1); 1067 free(p1); 1068 #else 1069 Main_ParseArgLine(getenv("MAKE")); 1070 #endif 1071 1072 /* 1073 * Find where we are (now). 1074 * We take care of PWD for the automounter below... 1075 */ 1076 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1077 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1078 progname, strerror(errno)); 1079 exit(2); 1080 } 1081 1082 MainParseArgs(argc, argv); 1083 1084 if (enterFlag) 1085 printf("%s: Entering directory `%s'\n", progname, curdir); 1086 1087 /* 1088 * Verify that cwd is sane. 1089 */ 1090 if (stat(curdir, &sa) == -1) { 1091 (void)fprintf(stderr, "%s: %s: %s.\n", 1092 progname, curdir, strerror(errno)); 1093 exit(2); 1094 } 1095 1096 /* 1097 * All this code is so that we know where we are when we start up 1098 * on a different machine with pmake. 1099 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1100 * since the value of curdir can vary depending on how we got 1101 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1102 * or via subdir.mk in which case its likely a shell which does 1103 * not provide it. 1104 * So, to stop it breaking this case only, we ignore PWD if 1105 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1106 */ 1107 #ifndef NO_PWD_OVERRIDE 1108 if (!ignorePWD) { 1109 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1110 1111 if ((pwd = getenv("PWD")) != NULL && 1112 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1113 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1114 VAR_CMD, &ptmp2); 1115 1116 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1117 if (stat(pwd, &sb) == 0 && 1118 sa.st_ino == sb.st_ino && 1119 sa.st_dev == sb.st_dev) 1120 (void)strncpy(curdir, pwd, MAXPATHLEN); 1121 } 1122 } 1123 free(ptmp1); 1124 free(ptmp2); 1125 } 1126 #endif 1127 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1128 1129 /* 1130 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1131 * MAKEOBJDIR is set in the environment, try only that value 1132 * and fall back to .CURDIR if it does not exist. 1133 * 1134 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1135 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1136 * of these paths exist, just use .CURDIR. 1137 */ 1138 Dir_Init(curdir); 1139 (void)Main_SetObjdir(curdir); 1140 1141 if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) { 1142 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1143 (void)Main_SetObjdir(mdpath); 1144 free(p1); 1145 } else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) { 1146 (void)Main_SetObjdir(path); 1147 free(p1); 1148 } else { 1149 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1150 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1151 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1152 _PATH_OBJDIRPREFIX, curdir); 1153 (void)Main_SetObjdir(mdpath); 1154 } 1155 } 1156 1157 /* 1158 * Initialize archive, target and suffix modules in preparation for 1159 * parsing the makefile(s) 1160 */ 1161 Arch_Init(); 1162 Targ_Init(); 1163 Suff_Init(); 1164 Trace_Init(tracefile); 1165 1166 DEFAULT = NULL; 1167 (void)time(&now); 1168 1169 Trace_Log(MAKESTART, NULL); 1170 1171 /* 1172 * Set up the .TARGETS variable to contain the list of targets to be 1173 * created. If none specified, make the variable empty -- the parser 1174 * will fill the thing in with the default or .MAIN target. 1175 */ 1176 if (!Lst_IsEmpty(create)) { 1177 LstNode ln; 1178 1179 for (ln = Lst_First(create); ln != NULL; 1180 ln = Lst_Succ(ln)) { 1181 char *name = (char *)Lst_Datum(ln); 1182 1183 Var_Append(".TARGETS", name, VAR_GLOBAL); 1184 } 1185 } else 1186 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1187 1188 1189 /* 1190 * If no user-supplied system path was given (through the -m option) 1191 * add the directories from the DEFSYSPATH (more than one may be given 1192 * as dir1:...:dirn) to the system include path. 1193 */ 1194 if (syspath == NULL || *syspath == '\0') 1195 syspath = defsyspath; 1196 else 1197 syspath = bmake_strdup(syspath); 1198 1199 for (start = syspath; *start != '\0'; start = cp) { 1200 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1201 continue; 1202 if (*cp == ':') { 1203 *cp++ = '\0'; 1204 } 1205 /* look for magic parent directory search string */ 1206 if (strncmp(".../", start, 4) != 0) { 1207 (void)Dir_AddDir(defIncPath, start); 1208 } else { 1209 if (Dir_FindHereOrAbove(curdir, start+4, 1210 found_path, sizeof(found_path))) { 1211 (void)Dir_AddDir(defIncPath, found_path); 1212 } 1213 } 1214 } 1215 if (syspath != defsyspath) 1216 free(syspath); 1217 1218 /* 1219 * Read in the built-in rules first, followed by the specified 1220 * makefile, if it was (makefile != NULL), or the default 1221 * makefile and Makefile, in that order, if it wasn't. 1222 */ 1223 if (!noBuiltins) { 1224 LstNode ln; 1225 1226 sysMkPath = Lst_Init(FALSE); 1227 Dir_Expand(_PATH_DEFSYSMK, 1228 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1229 sysMkPath); 1230 if (Lst_IsEmpty(sysMkPath)) 1231 Fatal("%s: no system rules (%s).", progname, 1232 _PATH_DEFSYSMK); 1233 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1234 if (ln == NULL) 1235 Fatal("%s: cannot open %s.", progname, 1236 (char *)Lst_Datum(ln)); 1237 } 1238 1239 if (!Lst_IsEmpty(makefiles)) { 1240 LstNode ln; 1241 1242 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1243 if (ln != NULL) 1244 Fatal("%s: cannot open %s.", progname, 1245 (char *)Lst_Datum(ln)); 1246 } else { 1247 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1248 VAR_CMD, VARF_WANTRES); 1249 if (p1) { 1250 (void)str2Lst_Append(makefiles, p1, NULL); 1251 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1252 free(p1); 1253 } 1254 } 1255 1256 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1257 if (!noBuiltins || !printVars) { 1258 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1259 VAR_CMD, VARF_WANTRES); 1260 doing_depend = TRUE; 1261 (void)ReadMakefile(makeDependfile, NULL); 1262 doing_depend = FALSE; 1263 } 1264 1265 if (enterFlagObj) 1266 printf("%s: Entering directory `%s'\n", progname, objdir); 1267 1268 MakeMode(NULL); 1269 1270 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1271 free(p1); 1272 1273 if (!forceJobs && !compatMake && 1274 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1275 char *value; 1276 int n; 1277 1278 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1279 n = strtol(value, NULL, 0); 1280 if (n < 1) { 1281 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1282 progname); 1283 exit(1); 1284 } 1285 if (n != maxJobs) { 1286 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1287 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1288 } 1289 maxJobs = n; 1290 maxJobTokens = maxJobs; 1291 forceJobs = TRUE; 1292 free(value); 1293 } 1294 1295 /* 1296 * Be compatible if user did not specify -j and did not explicitly 1297 * turned compatibility on 1298 */ 1299 if (!compatMake && !forceJobs) { 1300 compatMake = TRUE; 1301 } 1302 1303 if (!compatMake) 1304 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1305 if (DEBUG(JOB)) 1306 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1307 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1308 1309 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1310 1311 /* 1312 * For compatibility, look at the directories in the VPATH variable 1313 * and add them to the search path, if the variable is defined. The 1314 * variable's value is in the same format as the PATH envariable, i.e. 1315 * <directory>:<directory>:<directory>... 1316 */ 1317 if (Var_Exists("VPATH", VAR_CMD)) { 1318 char *vpath, savec; 1319 /* 1320 * GCC stores string constants in read-only memory, but 1321 * Var_Subst will want to write this thing, so store it 1322 * in an array 1323 */ 1324 static char VPATH[] = "${VPATH}"; 1325 1326 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1327 path = vpath; 1328 do { 1329 /* skip to end of directory */ 1330 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1331 continue; 1332 /* Save terminator character so know when to stop */ 1333 savec = *cp; 1334 *cp = '\0'; 1335 /* Add directory to search path */ 1336 (void)Dir_AddDir(dirSearchPath, path); 1337 *cp = savec; 1338 path = cp + 1; 1339 } while (savec == ':'); 1340 free(vpath); 1341 } 1342 1343 /* 1344 * Now that all search paths have been read for suffixes et al, it's 1345 * time to add the default search path to their lists... 1346 */ 1347 Suff_DoPaths(); 1348 1349 /* 1350 * Propagate attributes through :: dependency lists. 1351 */ 1352 Targ_Propagate(); 1353 1354 /* print the initial graph, if the user requested it */ 1355 if (DEBUG(GRAPH1)) 1356 Targ_PrintGraph(1); 1357 1358 /* print the values of any variables requested by the user */ 1359 if (printVars) { 1360 LstNode ln; 1361 Boolean expandVars; 1362 1363 if (debugVflag) 1364 expandVars = FALSE; 1365 else 1366 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1367 for (ln = Lst_First(variables); ln != NULL; 1368 ln = Lst_Succ(ln)) { 1369 char *var = (char *)Lst_Datum(ln); 1370 char *value; 1371 1372 if (strchr(var, '$')) { 1373 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1374 VARF_WANTRES); 1375 } else if (expandVars) { 1376 char tmp[128]; 1377 1378 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1379 Fatal("%s: variable name too big: %s", 1380 progname, var); 1381 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1382 VARF_WANTRES); 1383 } else { 1384 value = Var_Value(var, VAR_GLOBAL, &p1); 1385 } 1386 printf("%s\n", value ? value : ""); 1387 free(p1); 1388 } 1389 } else { 1390 /* 1391 * Have now read the entire graph and need to make a list of 1392 * targets to create. If none was given on the command line, 1393 * we consult the parsing module to find the main target(s) 1394 * to create. 1395 */ 1396 if (Lst_IsEmpty(create)) 1397 targs = Parse_MainName(); 1398 else 1399 targs = Targ_FindList(create, TARG_CREATE); 1400 1401 if (!compatMake) { 1402 /* 1403 * Initialize job module before traversing the graph 1404 * now that any .BEGIN and .END targets have been read. 1405 * This is done only if the -q flag wasn't given 1406 * (to prevent the .BEGIN from being executed should 1407 * it exist). 1408 */ 1409 if (!queryFlag) { 1410 Job_Init(); 1411 jobsRunning = TRUE; 1412 } 1413 1414 /* Traverse the graph, checking on all the targets */ 1415 outOfDate = Make_Run(targs); 1416 } else { 1417 /* 1418 * Compat_Init will take care of creating all the 1419 * targets as well as initializing the module. 1420 */ 1421 Compat_Run(targs); 1422 } 1423 } 1424 1425 #ifdef CLEANUP 1426 Lst_Destroy(targs, NULL); 1427 Lst_Destroy(variables, NULL); 1428 Lst_Destroy(makefiles, NULL); 1429 Lst_Destroy(create, (FreeProc *)free); 1430 #endif 1431 1432 /* print the graph now it's been processed if the user requested it */ 1433 if (DEBUG(GRAPH2)) 1434 Targ_PrintGraph(2); 1435 1436 Trace_Log(MAKEEND, 0); 1437 1438 if (enterFlagObj) 1439 printf("%s: Leaving directory `%s'\n", progname, objdir); 1440 if (enterFlag) 1441 printf("%s: Leaving directory `%s'\n", progname, curdir); 1442 1443 #ifdef USE_META 1444 meta_finish(); 1445 #endif 1446 Suff_End(); 1447 Targ_End(); 1448 Arch_End(); 1449 Var_End(); 1450 Parse_End(); 1451 Dir_End(); 1452 Job_End(); 1453 Trace_End(); 1454 1455 return outOfDate ? 1 : 0; 1456 } 1457 1458 /*- 1459 * ReadMakefile -- 1460 * Open and parse the given makefile. 1461 * 1462 * Results: 1463 * 0 if ok. -1 if couldn't open file. 1464 * 1465 * Side Effects: 1466 * lots 1467 */ 1468 static int 1469 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1470 { 1471 const char *fname = p; /* makefile to read */ 1472 int fd; 1473 size_t len = MAXPATHLEN; 1474 char *name, *path = bmake_malloc(len); 1475 1476 if (!strcmp(fname, "-")) { 1477 Parse_File(NULL /*stdin*/, -1); 1478 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1479 } else { 1480 /* if we've chdir'd, rebuild the path name */ 1481 if (strcmp(curdir, objdir) && *fname != '/') { 1482 size_t plen = strlen(curdir) + strlen(fname) + 2; 1483 if (len < plen) 1484 path = bmake_realloc(path, len = 2 * plen); 1485 1486 (void)snprintf(path, len, "%s/%s", curdir, fname); 1487 fd = open(path, O_RDONLY); 1488 if (fd != -1) { 1489 fname = path; 1490 goto found; 1491 } 1492 1493 /* If curdir failed, try objdir (ala .depend) */ 1494 plen = strlen(objdir) + strlen(fname) + 2; 1495 if (len < plen) 1496 path = bmake_realloc(path, len = 2 * plen); 1497 (void)snprintf(path, len, "%s/%s", objdir, fname); 1498 fd = open(path, O_RDONLY); 1499 if (fd != -1) { 1500 fname = path; 1501 goto found; 1502 } 1503 } else { 1504 fd = open(fname, O_RDONLY); 1505 if (fd != -1) 1506 goto found; 1507 } 1508 /* look in -I and system include directories. */ 1509 name = Dir_FindFile(fname, parseIncPath); 1510 if (!name) 1511 name = Dir_FindFile(fname, 1512 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1513 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1514 free(name); 1515 free(path); 1516 return(-1); 1517 } 1518 fname = name; 1519 /* 1520 * set the MAKEFILE variable desired by System V fans -- the 1521 * placement of the setting here means it gets set to the last 1522 * makefile specified, as it is set by SysV make. 1523 */ 1524 found: 1525 if (!doing_depend) 1526 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1527 Parse_File(fname, fd); 1528 } 1529 free(path); 1530 return(0); 1531 } 1532 1533 1534 1535 /*- 1536 * Cmd_Exec -- 1537 * Execute the command in cmd, and return the output of that command 1538 * in a string. 1539 * 1540 * Results: 1541 * A string containing the output of the command, or the empty string 1542 * If errnum is not NULL, it contains the reason for the command failure 1543 * 1544 * Side Effects: 1545 * The string must be freed by the caller. 1546 */ 1547 char * 1548 Cmd_Exec(const char *cmd, const char **errnum) 1549 { 1550 const char *args[4]; /* Args for invoking the shell */ 1551 int fds[2]; /* Pipe streams */ 1552 int cpid; /* Child PID */ 1553 int pid; /* PID from wait() */ 1554 char *res; /* result */ 1555 WAIT_T status; /* command exit status */ 1556 Buffer buf; /* buffer to store the result */ 1557 char *cp; 1558 int cc; /* bytes read, or -1 */ 1559 int savederr; /* saved errno */ 1560 1561 1562 *errnum = NULL; 1563 1564 if (!shellName) 1565 Shell_Init(); 1566 /* 1567 * Set up arguments for shell 1568 */ 1569 args[0] = shellName; 1570 args[1] = "-c"; 1571 args[2] = cmd; 1572 args[3] = NULL; 1573 1574 /* 1575 * Open a pipe for fetching its output 1576 */ 1577 if (pipe(fds) == -1) { 1578 *errnum = "Couldn't create pipe for \"%s\""; 1579 goto bad; 1580 } 1581 1582 /* 1583 * Fork 1584 */ 1585 switch (cpid = vFork()) { 1586 case 0: 1587 /* 1588 * Close input side of pipe 1589 */ 1590 (void)close(fds[0]); 1591 1592 /* 1593 * Duplicate the output stream to the shell's output, then 1594 * shut the extra thing down. Note we don't fetch the error 1595 * stream...why not? Why? 1596 */ 1597 (void)dup2(fds[1], 1); 1598 (void)close(fds[1]); 1599 1600 Var_ExportVars(); 1601 1602 (void)execv(shellPath, UNCONST(args)); 1603 _exit(1); 1604 /*NOTREACHED*/ 1605 1606 case -1: 1607 *errnum = "Couldn't exec \"%s\""; 1608 goto bad; 1609 1610 default: 1611 /* 1612 * No need for the writing half 1613 */ 1614 (void)close(fds[1]); 1615 1616 savederr = 0; 1617 Buf_Init(&buf, 0); 1618 1619 do { 1620 char result[BUFSIZ]; 1621 cc = read(fds[0], result, sizeof(result)); 1622 if (cc > 0) 1623 Buf_AddBytes(&buf, cc, result); 1624 } 1625 while (cc > 0 || (cc == -1 && errno == EINTR)); 1626 if (cc == -1) 1627 savederr = errno; 1628 1629 /* 1630 * Close the input side of the pipe. 1631 */ 1632 (void)close(fds[0]); 1633 1634 /* 1635 * Wait for the process to exit. 1636 */ 1637 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1638 JobReapChild(pid, status, FALSE); 1639 continue; 1640 } 1641 cc = Buf_Size(&buf); 1642 res = Buf_Destroy(&buf, FALSE); 1643 1644 if (savederr != 0) 1645 *errnum = "Couldn't read shell's output for \"%s\""; 1646 1647 if (WIFSIGNALED(status)) 1648 *errnum = "\"%s\" exited on a signal"; 1649 else if (WEXITSTATUS(status) != 0) 1650 *errnum = "\"%s\" returned non-zero status"; 1651 1652 /* 1653 * Null-terminate the result, convert newlines to spaces and 1654 * install it in the variable. 1655 */ 1656 res[cc] = '\0'; 1657 cp = &res[cc]; 1658 1659 if (cc > 0 && *--cp == '\n') { 1660 /* 1661 * A final newline is just stripped 1662 */ 1663 *cp-- = '\0'; 1664 } 1665 while (cp >= res) { 1666 if (*cp == '\n') { 1667 *cp = ' '; 1668 } 1669 cp--; 1670 } 1671 break; 1672 } 1673 return res; 1674 bad: 1675 res = bmake_malloc(1); 1676 *res = '\0'; 1677 return res; 1678 } 1679 1680 /*- 1681 * Error -- 1682 * Print an error message given its format. 1683 * 1684 * Results: 1685 * None. 1686 * 1687 * Side Effects: 1688 * The message is printed. 1689 */ 1690 /* VARARGS */ 1691 void 1692 Error(const char *fmt, ...) 1693 { 1694 va_list ap; 1695 FILE *err_file; 1696 1697 err_file = debug_file; 1698 if (err_file == stdout) 1699 err_file = stderr; 1700 (void)fflush(stdout); 1701 for (;;) { 1702 va_start(ap, fmt); 1703 fprintf(err_file, "%s: ", progname); 1704 (void)vfprintf(err_file, fmt, ap); 1705 va_end(ap); 1706 (void)fprintf(err_file, "\n"); 1707 (void)fflush(err_file); 1708 if (err_file == stderr) 1709 break; 1710 err_file = stderr; 1711 } 1712 } 1713 1714 /*- 1715 * Fatal -- 1716 * Produce a Fatal error message. If jobs are running, waits for them 1717 * to finish. 1718 * 1719 * Results: 1720 * None 1721 * 1722 * Side Effects: 1723 * The program exits 1724 */ 1725 /* VARARGS */ 1726 void 1727 Fatal(const char *fmt, ...) 1728 { 1729 va_list ap; 1730 1731 va_start(ap, fmt); 1732 if (jobsRunning) 1733 Job_Wait(); 1734 1735 (void)fflush(stdout); 1736 (void)vfprintf(stderr, fmt, ap); 1737 va_end(ap); 1738 (void)fprintf(stderr, "\n"); 1739 (void)fflush(stderr); 1740 1741 PrintOnError(NULL, NULL); 1742 1743 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1744 Targ_PrintGraph(2); 1745 Trace_Log(MAKEERROR, 0); 1746 exit(2); /* Not 1 so -q can distinguish error */ 1747 } 1748 1749 /* 1750 * Punt -- 1751 * Major exception once jobs are being created. Kills all jobs, prints 1752 * a message and exits. 1753 * 1754 * Results: 1755 * None 1756 * 1757 * Side Effects: 1758 * All children are killed indiscriminately and the program Lib_Exits 1759 */ 1760 /* VARARGS */ 1761 void 1762 Punt(const char *fmt, ...) 1763 { 1764 va_list ap; 1765 1766 va_start(ap, fmt); 1767 (void)fflush(stdout); 1768 (void)fprintf(stderr, "%s: ", progname); 1769 (void)vfprintf(stderr, fmt, ap); 1770 va_end(ap); 1771 (void)fprintf(stderr, "\n"); 1772 (void)fflush(stderr); 1773 1774 PrintOnError(NULL, NULL); 1775 1776 DieHorribly(); 1777 } 1778 1779 /*- 1780 * DieHorribly -- 1781 * Exit without giving a message. 1782 * 1783 * Results: 1784 * None 1785 * 1786 * Side Effects: 1787 * A big one... 1788 */ 1789 void 1790 DieHorribly(void) 1791 { 1792 if (jobsRunning) 1793 Job_AbortAll(); 1794 if (DEBUG(GRAPH2)) 1795 Targ_PrintGraph(2); 1796 Trace_Log(MAKEERROR, 0); 1797 exit(2); /* Not 1, so -q can distinguish error */ 1798 } 1799 1800 /* 1801 * Finish -- 1802 * Called when aborting due to errors in child shell to signal 1803 * abnormal exit. 1804 * 1805 * Results: 1806 * None 1807 * 1808 * Side Effects: 1809 * The program exits 1810 */ 1811 void 1812 Finish(int errors) 1813 /* number of errors encountered in Make_Make */ 1814 { 1815 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1816 } 1817 1818 /* 1819 * eunlink -- 1820 * Remove a file carefully, avoiding directories. 1821 */ 1822 int 1823 eunlink(const char *file) 1824 { 1825 struct stat st; 1826 1827 if (lstat(file, &st) == -1) 1828 return -1; 1829 1830 if (S_ISDIR(st.st_mode)) { 1831 errno = EISDIR; 1832 return -1; 1833 } 1834 return unlink(file); 1835 } 1836 1837 /* 1838 * execError -- 1839 * Print why exec failed, avoiding stdio. 1840 */ 1841 void 1842 execError(const char *af, const char *av) 1843 { 1844 #ifdef USE_IOVEC 1845 int i = 0; 1846 struct iovec iov[8]; 1847 #define IOADD(s) \ 1848 (void)(iov[i].iov_base = UNCONST(s), \ 1849 iov[i].iov_len = strlen(iov[i].iov_base), \ 1850 i++) 1851 #else 1852 #define IOADD(s) (void)write(2, s, strlen(s)) 1853 #endif 1854 1855 IOADD(progname); 1856 IOADD(": "); 1857 IOADD(af); 1858 IOADD("("); 1859 IOADD(av); 1860 IOADD(") failed ("); 1861 IOADD(strerror(errno)); 1862 IOADD(")\n"); 1863 1864 #ifdef USE_IOVEC 1865 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1866 continue; 1867 #endif 1868 } 1869 1870 /* 1871 * usage -- 1872 * exit with usage message 1873 */ 1874 static void 1875 usage(void) 1876 { 1877 char *p; 1878 if ((p = strchr(progname, '[')) != NULL) 1879 *p = '\0'; 1880 1881 (void)fprintf(stderr, 1882 "usage: %s [-BeikNnqrstWwX] \n\ 1883 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1884 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1885 [-V variable] [variable=value] [target ...]\n", progname); 1886 exit(2); 1887 } 1888 1889 1890 /* 1891 * realpath(3) can get expensive, cache results... 1892 */ 1893 char * 1894 cached_realpath(const char *pathname, char *resolved) 1895 { 1896 static GNode *cache; 1897 char *rp, *cp; 1898 1899 if (!pathname || !pathname[0]) 1900 return NULL; 1901 1902 if (!cache) { 1903 cache = Targ_NewGN("Realpath"); 1904 #ifndef DEBUG_REALPATH_CACHE 1905 cache->flags = INTERNAL; 1906 #endif 1907 } 1908 1909 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1910 /* a hit */ 1911 strlcpy(resolved, rp, MAXPATHLEN); 1912 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1913 Var_Set(pathname, rp, cache, 0); 1914 } 1915 free(cp); 1916 return rp ? resolved : NULL; 1917 } 1918 1919 int 1920 PrintAddr(void *a, void *b) 1921 { 1922 printf("%lx ", (unsigned long) a); 1923 return b ? 0 : 0; 1924 } 1925 1926 1927 static int 1928 addErrorCMD(void *cmdp, void __unused *gnp) 1929 { 1930 if (cmdp == NULL) 1931 return 1; /* stop */ 1932 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1933 return 0; 1934 } 1935 1936 void 1937 PrintOnError(GNode *gn, const char *s) 1938 { 1939 static GNode *en = NULL; 1940 char tmp[64]; 1941 char *cp; 1942 1943 if (s) 1944 printf("%s", s); 1945 1946 printf("\n%s: stopped in %s\n", progname, curdir); 1947 1948 if (en) 1949 return; /* we've been here! */ 1950 if (gn) { 1951 /* 1952 * We can print this even if there is no .ERROR target. 1953 */ 1954 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1955 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 1956 Lst_ForEach(gn->commands, addErrorCMD, gn); 1957 } 1958 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1959 sizeof(tmp) - 1); 1960 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 1961 if (cp) { 1962 if (*cp) 1963 printf("%s", cp); 1964 free(cp); 1965 } 1966 fflush(stdout); 1967 1968 /* 1969 * Finally, see if there is a .ERROR target, and run it if so. 1970 */ 1971 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1972 if (en) { 1973 en->type |= OP_SPECIAL; 1974 Compat_Make(en, en); 1975 } 1976 } 1977 1978 void 1979 Main_ExportMAKEFLAGS(Boolean first) 1980 { 1981 static int once = 1; 1982 char tmp[64]; 1983 char *s; 1984 1985 if (once != first) 1986 return; 1987 once = 0; 1988 1989 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1990 sizeof(tmp)); 1991 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 1992 if (s && *s) { 1993 #ifdef POSIX 1994 setenv("MAKEFLAGS", s, 1); 1995 #else 1996 setenv("MAKE", s, 1); 1997 #endif 1998 } 1999 } 2000 2001 char * 2002 getTmpdir(void) 2003 { 2004 static char *tmpdir = NULL; 2005 2006 if (!tmpdir) { 2007 struct stat st; 2008 2009 /* 2010 * Honor $TMPDIR but only if it is valid. 2011 * Ensure it ends with /. 2012 */ 2013 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2014 VARF_WANTRES); 2015 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2016 free(tmpdir); 2017 tmpdir = bmake_strdup(_PATH_TMP); 2018 } 2019 } 2020 return tmpdir; 2021 } 2022 2023 /* 2024 * Create and open a temp file using "pattern". 2025 * If "fnamep" is provided set it to a copy of the filename created. 2026 * Otherwise unlink the file once open. 2027 */ 2028 int 2029 mkTempFile(const char *pattern, char **fnamep) 2030 { 2031 static char *tmpdir = NULL; 2032 char tfile[MAXPATHLEN]; 2033 int fd; 2034 2035 if (!pattern) 2036 pattern = TMPPAT; 2037 if (!tmpdir) 2038 tmpdir = getTmpdir(); 2039 if (pattern[0] == '/') { 2040 snprintf(tfile, sizeof(tfile), "%s", pattern); 2041 } else { 2042 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2043 } 2044 if ((fd = mkstemp(tfile)) < 0) 2045 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2046 if (fnamep) { 2047 *fnamep = bmake_strdup(tfile); 2048 } else { 2049 unlink(tfile); /* we just want the descriptor */ 2050 } 2051 return fd; 2052 } 2053 2054 /* 2055 * Convert a string representation of a boolean. 2056 * Anything that looks like "No", "False", "Off", "0" etc, 2057 * is FALSE, otherwise TRUE. 2058 */ 2059 Boolean 2060 s2Boolean(const char *s, Boolean bf) 2061 { 2062 if (s) { 2063 switch(*s) { 2064 case '\0': /* not set - the default wins */ 2065 break; 2066 case '0': 2067 case 'F': 2068 case 'f': 2069 case 'N': 2070 case 'n': 2071 bf = FALSE; 2072 break; 2073 case 'O': 2074 case 'o': 2075 switch (s[1]) { 2076 case 'F': 2077 case 'f': 2078 bf = FALSE; 2079 break; 2080 default: 2081 bf = TRUE; 2082 break; 2083 } 2084 break; 2085 default: 2086 bf = TRUE; 2087 break; 2088 } 2089 } 2090 return (bf); 2091 } 2092 2093 /* 2094 * Return a Boolean based on setting of a knob. 2095 * 2096 * If the knob is not set, the supplied default is the return value. 2097 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2098 * is FALSE, otherwise TRUE. 2099 */ 2100 Boolean 2101 getBoolean(const char *name, Boolean bf) 2102 { 2103 char tmp[64]; 2104 char *cp; 2105 2106 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2107 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2108 2109 if (cp) { 2110 bf = s2Boolean(cp, bf); 2111 free(cp); 2112 } 2113 } 2114 return (bf); 2115 } 2116