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(mib, __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 } 1047 if (makelevel > 0) { 1048 char pn[1024]; 1049 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1050 progname = bmake_strdup(pn); 1051 } 1052 1053 #ifdef USE_META 1054 meta_init(); 1055 #endif 1056 /* 1057 * First snag any flags out of the MAKE environment variable. 1058 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1059 * in a different format). 1060 */ 1061 #ifdef POSIX 1062 p1 = explode(getenv("MAKEFLAGS")); 1063 Main_ParseArgLine(p1); 1064 free(p1); 1065 #else 1066 Main_ParseArgLine(getenv("MAKE")); 1067 #endif 1068 1069 /* 1070 * Find where we are (now). 1071 * We take care of PWD for the automounter below... 1072 */ 1073 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1074 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1075 progname, strerror(errno)); 1076 exit(2); 1077 } 1078 1079 MainParseArgs(argc, argv); 1080 1081 if (enterFlag) 1082 printf("%s: Entering directory `%s'\n", progname, curdir); 1083 1084 /* 1085 * Verify that cwd is sane. 1086 */ 1087 if (stat(curdir, &sa) == -1) { 1088 (void)fprintf(stderr, "%s: %s: %s.\n", 1089 progname, curdir, strerror(errno)); 1090 exit(2); 1091 } 1092 1093 /* 1094 * All this code is so that we know where we are when we start up 1095 * on a different machine with pmake. 1096 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1097 * since the value of curdir can vary depending on how we got 1098 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1099 * or via subdir.mk in which case its likely a shell which does 1100 * not provide it. 1101 * So, to stop it breaking this case only, we ignore PWD if 1102 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1103 */ 1104 #ifndef NO_PWD_OVERRIDE 1105 if (!ignorePWD) { 1106 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1107 1108 if ((pwd = getenv("PWD")) != NULL && 1109 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1110 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1111 VAR_CMD, &ptmp2); 1112 1113 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1114 if (stat(pwd, &sb) == 0 && 1115 sa.st_ino == sb.st_ino && 1116 sa.st_dev == sb.st_dev) 1117 (void)strncpy(curdir, pwd, MAXPATHLEN); 1118 } 1119 } 1120 free(ptmp1); 1121 free(ptmp2); 1122 } 1123 #endif 1124 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1125 1126 /* 1127 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1128 * MAKEOBJDIR is set in the environment, try only that value 1129 * and fall back to .CURDIR if it does not exist. 1130 * 1131 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1132 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1133 * of these paths exist, just use .CURDIR. 1134 */ 1135 Dir_Init(curdir); 1136 (void)Main_SetObjdir(curdir); 1137 1138 if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) { 1139 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1140 (void)Main_SetObjdir(mdpath); 1141 free(p1); 1142 } else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) { 1143 (void)Main_SetObjdir(path); 1144 free(p1); 1145 } else { 1146 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1147 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1148 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1149 _PATH_OBJDIRPREFIX, curdir); 1150 (void)Main_SetObjdir(mdpath); 1151 } 1152 } 1153 1154 /* 1155 * Initialize archive, target and suffix modules in preparation for 1156 * parsing the makefile(s) 1157 */ 1158 Arch_Init(); 1159 Targ_Init(); 1160 Suff_Init(); 1161 Trace_Init(tracefile); 1162 1163 DEFAULT = NULL; 1164 (void)time(&now); 1165 1166 Trace_Log(MAKESTART, NULL); 1167 1168 /* 1169 * Set up the .TARGETS variable to contain the list of targets to be 1170 * created. If none specified, make the variable empty -- the parser 1171 * will fill the thing in with the default or .MAIN target. 1172 */ 1173 if (!Lst_IsEmpty(create)) { 1174 LstNode ln; 1175 1176 for (ln = Lst_First(create); ln != NULL; 1177 ln = Lst_Succ(ln)) { 1178 char *name = (char *)Lst_Datum(ln); 1179 1180 Var_Append(".TARGETS", name, VAR_GLOBAL); 1181 } 1182 } else 1183 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1184 1185 1186 /* 1187 * If no user-supplied system path was given (through the -m option) 1188 * add the directories from the DEFSYSPATH (more than one may be given 1189 * as dir1:...:dirn) to the system include path. 1190 */ 1191 if (syspath == NULL || *syspath == '\0') 1192 syspath = defsyspath; 1193 else 1194 syspath = bmake_strdup(syspath); 1195 1196 for (start = syspath; *start != '\0'; start = cp) { 1197 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1198 continue; 1199 if (*cp == ':') { 1200 *cp++ = '\0'; 1201 } 1202 /* look for magic parent directory search string */ 1203 if (strncmp(".../", start, 4) != 0) { 1204 (void)Dir_AddDir(defIncPath, start); 1205 } else { 1206 if (Dir_FindHereOrAbove(curdir, start+4, 1207 found_path, sizeof(found_path))) { 1208 (void)Dir_AddDir(defIncPath, found_path); 1209 } 1210 } 1211 } 1212 if (syspath != defsyspath) 1213 free(syspath); 1214 1215 /* 1216 * Read in the built-in rules first, followed by the specified 1217 * makefile, if it was (makefile != NULL), or the default 1218 * makefile and Makefile, in that order, if it wasn't. 1219 */ 1220 if (!noBuiltins) { 1221 LstNode ln; 1222 1223 sysMkPath = Lst_Init(FALSE); 1224 Dir_Expand(_PATH_DEFSYSMK, 1225 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1226 sysMkPath); 1227 if (Lst_IsEmpty(sysMkPath)) 1228 Fatal("%s: no system rules (%s).", progname, 1229 _PATH_DEFSYSMK); 1230 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1231 if (ln == NULL) 1232 Fatal("%s: cannot open %s.", progname, 1233 (char *)Lst_Datum(ln)); 1234 } 1235 1236 if (!Lst_IsEmpty(makefiles)) { 1237 LstNode ln; 1238 1239 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1240 if (ln != NULL) 1241 Fatal("%s: cannot open %s.", progname, 1242 (char *)Lst_Datum(ln)); 1243 } else { 1244 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1245 VAR_CMD, VARF_WANTRES); 1246 if (p1) { 1247 (void)str2Lst_Append(makefiles, p1, NULL); 1248 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1249 free(p1); 1250 } 1251 } 1252 1253 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1254 if (!noBuiltins || !printVars) { 1255 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1256 VAR_CMD, VARF_WANTRES); 1257 doing_depend = TRUE; 1258 (void)ReadMakefile(makeDependfile, NULL); 1259 doing_depend = FALSE; 1260 } 1261 1262 if (enterFlagObj) 1263 printf("%s: Entering directory `%s'\n", progname, objdir); 1264 1265 MakeMode(NULL); 1266 1267 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1268 free(p1); 1269 1270 if (!forceJobs && !compatMake && 1271 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1272 char *value; 1273 int n; 1274 1275 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1276 n = strtol(value, NULL, 0); 1277 if (n < 1) { 1278 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1279 progname); 1280 exit(1); 1281 } 1282 if (n != maxJobs) { 1283 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1284 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1285 } 1286 maxJobs = n; 1287 maxJobTokens = maxJobs; 1288 forceJobs = TRUE; 1289 free(value); 1290 } 1291 1292 /* 1293 * Be compatible if user did not specify -j and did not explicitly 1294 * turned compatibility on 1295 */ 1296 if (!compatMake && !forceJobs) { 1297 compatMake = TRUE; 1298 } 1299 1300 if (!compatMake) 1301 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1302 if (DEBUG(JOB)) 1303 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1304 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1305 1306 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1307 1308 /* 1309 * For compatibility, look at the directories in the VPATH variable 1310 * and add them to the search path, if the variable is defined. The 1311 * variable's value is in the same format as the PATH envariable, i.e. 1312 * <directory>:<directory>:<directory>... 1313 */ 1314 if (Var_Exists("VPATH", VAR_CMD)) { 1315 char *vpath, savec; 1316 /* 1317 * GCC stores string constants in read-only memory, but 1318 * Var_Subst will want to write this thing, so store it 1319 * in an array 1320 */ 1321 static char VPATH[] = "${VPATH}"; 1322 1323 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1324 path = vpath; 1325 do { 1326 /* skip to end of directory */ 1327 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1328 continue; 1329 /* Save terminator character so know when to stop */ 1330 savec = *cp; 1331 *cp = '\0'; 1332 /* Add directory to search path */ 1333 (void)Dir_AddDir(dirSearchPath, path); 1334 *cp = savec; 1335 path = cp + 1; 1336 } while (savec == ':'); 1337 free(vpath); 1338 } 1339 1340 /* 1341 * Now that all search paths have been read for suffixes et al, it's 1342 * time to add the default search path to their lists... 1343 */ 1344 Suff_DoPaths(); 1345 1346 /* 1347 * Propagate attributes through :: dependency lists. 1348 */ 1349 Targ_Propagate(); 1350 1351 /* print the initial graph, if the user requested it */ 1352 if (DEBUG(GRAPH1)) 1353 Targ_PrintGraph(1); 1354 1355 /* print the values of any variables requested by the user */ 1356 if (printVars) { 1357 LstNode ln; 1358 Boolean expandVars; 1359 1360 if (debugVflag) 1361 expandVars = FALSE; 1362 else 1363 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1364 for (ln = Lst_First(variables); ln != NULL; 1365 ln = Lst_Succ(ln)) { 1366 char *var = (char *)Lst_Datum(ln); 1367 char *value; 1368 1369 if (strchr(var, '$')) { 1370 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1371 VARF_WANTRES); 1372 } else if (expandVars) { 1373 char tmp[128]; 1374 1375 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1376 Fatal("%s: variable name too big: %s", 1377 progname, var); 1378 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1379 VARF_WANTRES); 1380 } else { 1381 value = Var_Value(var, VAR_GLOBAL, &p1); 1382 } 1383 printf("%s\n", value ? value : ""); 1384 free(p1); 1385 } 1386 } else { 1387 /* 1388 * Have now read the entire graph and need to make a list of 1389 * targets to create. If none was given on the command line, 1390 * we consult the parsing module to find the main target(s) 1391 * to create. 1392 */ 1393 if (Lst_IsEmpty(create)) 1394 targs = Parse_MainName(); 1395 else 1396 targs = Targ_FindList(create, TARG_CREATE); 1397 1398 if (!compatMake) { 1399 /* 1400 * Initialize job module before traversing the graph 1401 * now that any .BEGIN and .END targets have been read. 1402 * This is done only if the -q flag wasn't given 1403 * (to prevent the .BEGIN from being executed should 1404 * it exist). 1405 */ 1406 if (!queryFlag) { 1407 Job_Init(); 1408 jobsRunning = TRUE; 1409 } 1410 1411 /* Traverse the graph, checking on all the targets */ 1412 outOfDate = Make_Run(targs); 1413 } else { 1414 /* 1415 * Compat_Init will take care of creating all the 1416 * targets as well as initializing the module. 1417 */ 1418 Compat_Run(targs); 1419 } 1420 } 1421 1422 #ifdef CLEANUP 1423 Lst_Destroy(targs, NULL); 1424 Lst_Destroy(variables, NULL); 1425 Lst_Destroy(makefiles, NULL); 1426 Lst_Destroy(create, (FreeProc *)free); 1427 #endif 1428 1429 /* print the graph now it's been processed if the user requested it */ 1430 if (DEBUG(GRAPH2)) 1431 Targ_PrintGraph(2); 1432 1433 Trace_Log(MAKEEND, 0); 1434 1435 if (enterFlagObj) 1436 printf("%s: Leaving directory `%s'\n", progname, objdir); 1437 if (enterFlag) 1438 printf("%s: Leaving directory `%s'\n", progname, curdir); 1439 1440 #ifdef USE_META 1441 meta_finish(); 1442 #endif 1443 Suff_End(); 1444 Targ_End(); 1445 Arch_End(); 1446 Var_End(); 1447 Parse_End(); 1448 Dir_End(); 1449 Job_End(); 1450 Trace_End(); 1451 1452 return outOfDate ? 1 : 0; 1453 } 1454 1455 /*- 1456 * ReadMakefile -- 1457 * Open and parse the given makefile. 1458 * 1459 * Results: 1460 * 0 if ok. -1 if couldn't open file. 1461 * 1462 * Side Effects: 1463 * lots 1464 */ 1465 static int 1466 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1467 { 1468 const char *fname = p; /* makefile to read */ 1469 int fd; 1470 size_t len = MAXPATHLEN; 1471 char *name, *path = bmake_malloc(len); 1472 1473 if (!strcmp(fname, "-")) { 1474 Parse_File(NULL /*stdin*/, -1); 1475 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1476 } else { 1477 /* if we've chdir'd, rebuild the path name */ 1478 if (strcmp(curdir, objdir) && *fname != '/') { 1479 size_t plen = strlen(curdir) + strlen(fname) + 2; 1480 if (len < plen) 1481 path = bmake_realloc(path, len = 2 * plen); 1482 1483 (void)snprintf(path, len, "%s/%s", curdir, fname); 1484 fd = open(path, O_RDONLY); 1485 if (fd != -1) { 1486 fname = path; 1487 goto found; 1488 } 1489 1490 /* If curdir failed, try objdir (ala .depend) */ 1491 plen = strlen(objdir) + strlen(fname) + 2; 1492 if (len < plen) 1493 path = bmake_realloc(path, len = 2 * plen); 1494 (void)snprintf(path, len, "%s/%s", objdir, fname); 1495 fd = open(path, O_RDONLY); 1496 if (fd != -1) { 1497 fname = path; 1498 goto found; 1499 } 1500 } else { 1501 fd = open(fname, O_RDONLY); 1502 if (fd != -1) 1503 goto found; 1504 } 1505 /* look in -I and system include directories. */ 1506 name = Dir_FindFile(fname, parseIncPath); 1507 if (!name) 1508 name = Dir_FindFile(fname, 1509 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1510 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1511 free(name); 1512 free(path); 1513 return(-1); 1514 } 1515 fname = name; 1516 /* 1517 * set the MAKEFILE variable desired by System V fans -- the 1518 * placement of the setting here means it gets set to the last 1519 * makefile specified, as it is set by SysV make. 1520 */ 1521 found: 1522 if (!doing_depend) 1523 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1524 Parse_File(fname, fd); 1525 } 1526 free(path); 1527 return(0); 1528 } 1529 1530 1531 1532 /*- 1533 * Cmd_Exec -- 1534 * Execute the command in cmd, and return the output of that command 1535 * in a string. 1536 * 1537 * Results: 1538 * A string containing the output of the command, or the empty string 1539 * If errnum is not NULL, it contains the reason for the command failure 1540 * 1541 * Side Effects: 1542 * The string must be freed by the caller. 1543 */ 1544 char * 1545 Cmd_Exec(const char *cmd, const char **errnum) 1546 { 1547 const char *args[4]; /* Args for invoking the shell */ 1548 int fds[2]; /* Pipe streams */ 1549 int cpid; /* Child PID */ 1550 int pid; /* PID from wait() */ 1551 char *res; /* result */ 1552 WAIT_T status; /* command exit status */ 1553 Buffer buf; /* buffer to store the result */ 1554 char *cp; 1555 int cc; /* bytes read, or -1 */ 1556 int savederr; /* saved errno */ 1557 1558 1559 *errnum = NULL; 1560 1561 if (!shellName) 1562 Shell_Init(); 1563 /* 1564 * Set up arguments for shell 1565 */ 1566 args[0] = shellName; 1567 args[1] = "-c"; 1568 args[2] = cmd; 1569 args[3] = NULL; 1570 1571 /* 1572 * Open a pipe for fetching its output 1573 */ 1574 if (pipe(fds) == -1) { 1575 *errnum = "Couldn't create pipe for \"%s\""; 1576 goto bad; 1577 } 1578 1579 /* 1580 * Fork 1581 */ 1582 switch (cpid = vFork()) { 1583 case 0: 1584 /* 1585 * Close input side of pipe 1586 */ 1587 (void)close(fds[0]); 1588 1589 /* 1590 * Duplicate the output stream to the shell's output, then 1591 * shut the extra thing down. Note we don't fetch the error 1592 * stream...why not? Why? 1593 */ 1594 (void)dup2(fds[1], 1); 1595 (void)close(fds[1]); 1596 1597 Var_ExportVars(); 1598 1599 (void)execv(shellPath, UNCONST(args)); 1600 _exit(1); 1601 /*NOTREACHED*/ 1602 1603 case -1: 1604 *errnum = "Couldn't exec \"%s\""; 1605 goto bad; 1606 1607 default: 1608 /* 1609 * No need for the writing half 1610 */ 1611 (void)close(fds[1]); 1612 1613 savederr = 0; 1614 Buf_Init(&buf, 0); 1615 1616 do { 1617 char result[BUFSIZ]; 1618 cc = read(fds[0], result, sizeof(result)); 1619 if (cc > 0) 1620 Buf_AddBytes(&buf, cc, result); 1621 } 1622 while (cc > 0 || (cc == -1 && errno == EINTR)); 1623 if (cc == -1) 1624 savederr = errno; 1625 1626 /* 1627 * Close the input side of the pipe. 1628 */ 1629 (void)close(fds[0]); 1630 1631 /* 1632 * Wait for the process to exit. 1633 */ 1634 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1635 JobReapChild(pid, status, FALSE); 1636 continue; 1637 } 1638 cc = Buf_Size(&buf); 1639 res = Buf_Destroy(&buf, FALSE); 1640 1641 if (savederr != 0) 1642 *errnum = "Couldn't read shell's output for \"%s\""; 1643 1644 if (WIFSIGNALED(status)) 1645 *errnum = "\"%s\" exited on a signal"; 1646 else if (WEXITSTATUS(status) != 0) 1647 *errnum = "\"%s\" returned non-zero status"; 1648 1649 /* 1650 * Null-terminate the result, convert newlines to spaces and 1651 * install it in the variable. 1652 */ 1653 res[cc] = '\0'; 1654 cp = &res[cc]; 1655 1656 if (cc > 0 && *--cp == '\n') { 1657 /* 1658 * A final newline is just stripped 1659 */ 1660 *cp-- = '\0'; 1661 } 1662 while (cp >= res) { 1663 if (*cp == '\n') { 1664 *cp = ' '; 1665 } 1666 cp--; 1667 } 1668 break; 1669 } 1670 return res; 1671 bad: 1672 res = bmake_malloc(1); 1673 *res = '\0'; 1674 return res; 1675 } 1676 1677 /*- 1678 * Error -- 1679 * Print an error message given its format. 1680 * 1681 * Results: 1682 * None. 1683 * 1684 * Side Effects: 1685 * The message is printed. 1686 */ 1687 /* VARARGS */ 1688 void 1689 Error(const char *fmt, ...) 1690 { 1691 va_list ap; 1692 FILE *err_file; 1693 1694 err_file = debug_file; 1695 if (err_file == stdout) 1696 err_file = stderr; 1697 (void)fflush(stdout); 1698 for (;;) { 1699 va_start(ap, fmt); 1700 fprintf(err_file, "%s: ", progname); 1701 (void)vfprintf(err_file, fmt, ap); 1702 va_end(ap); 1703 (void)fprintf(err_file, "\n"); 1704 (void)fflush(err_file); 1705 if (err_file == stderr) 1706 break; 1707 err_file = stderr; 1708 } 1709 } 1710 1711 /*- 1712 * Fatal -- 1713 * Produce a Fatal error message. If jobs are running, waits for them 1714 * to finish. 1715 * 1716 * Results: 1717 * None 1718 * 1719 * Side Effects: 1720 * The program exits 1721 */ 1722 /* VARARGS */ 1723 void 1724 Fatal(const char *fmt, ...) 1725 { 1726 va_list ap; 1727 1728 va_start(ap, fmt); 1729 if (jobsRunning) 1730 Job_Wait(); 1731 1732 (void)fflush(stdout); 1733 (void)vfprintf(stderr, fmt, ap); 1734 va_end(ap); 1735 (void)fprintf(stderr, "\n"); 1736 (void)fflush(stderr); 1737 1738 PrintOnError(NULL, NULL); 1739 1740 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1741 Targ_PrintGraph(2); 1742 Trace_Log(MAKEERROR, 0); 1743 exit(2); /* Not 1 so -q can distinguish error */ 1744 } 1745 1746 /* 1747 * Punt -- 1748 * Major exception once jobs are being created. Kills all jobs, prints 1749 * a message and exits. 1750 * 1751 * Results: 1752 * None 1753 * 1754 * Side Effects: 1755 * All children are killed indiscriminately and the program Lib_Exits 1756 */ 1757 /* VARARGS */ 1758 void 1759 Punt(const char *fmt, ...) 1760 { 1761 va_list ap; 1762 1763 va_start(ap, fmt); 1764 (void)fflush(stdout); 1765 (void)fprintf(stderr, "%s: ", progname); 1766 (void)vfprintf(stderr, fmt, ap); 1767 va_end(ap); 1768 (void)fprintf(stderr, "\n"); 1769 (void)fflush(stderr); 1770 1771 PrintOnError(NULL, NULL); 1772 1773 DieHorribly(); 1774 } 1775 1776 /*- 1777 * DieHorribly -- 1778 * Exit without giving a message. 1779 * 1780 * Results: 1781 * None 1782 * 1783 * Side Effects: 1784 * A big one... 1785 */ 1786 void 1787 DieHorribly(void) 1788 { 1789 if (jobsRunning) 1790 Job_AbortAll(); 1791 if (DEBUG(GRAPH2)) 1792 Targ_PrintGraph(2); 1793 Trace_Log(MAKEERROR, 0); 1794 exit(2); /* Not 1, so -q can distinguish error */ 1795 } 1796 1797 /* 1798 * Finish -- 1799 * Called when aborting due to errors in child shell to signal 1800 * abnormal exit. 1801 * 1802 * Results: 1803 * None 1804 * 1805 * Side Effects: 1806 * The program exits 1807 */ 1808 void 1809 Finish(int errors) 1810 /* number of errors encountered in Make_Make */ 1811 { 1812 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1813 } 1814 1815 /* 1816 * eunlink -- 1817 * Remove a file carefully, avoiding directories. 1818 */ 1819 int 1820 eunlink(const char *file) 1821 { 1822 struct stat st; 1823 1824 if (lstat(file, &st) == -1) 1825 return -1; 1826 1827 if (S_ISDIR(st.st_mode)) { 1828 errno = EISDIR; 1829 return -1; 1830 } 1831 return unlink(file); 1832 } 1833 1834 /* 1835 * execError -- 1836 * Print why exec failed, avoiding stdio. 1837 */ 1838 void 1839 execError(const char *af, const char *av) 1840 { 1841 #ifdef USE_IOVEC 1842 int i = 0; 1843 struct iovec iov[8]; 1844 #define IOADD(s) \ 1845 (void)(iov[i].iov_base = UNCONST(s), \ 1846 iov[i].iov_len = strlen(iov[i].iov_base), \ 1847 i++) 1848 #else 1849 #define IOADD(s) (void)write(2, s, strlen(s)) 1850 #endif 1851 1852 IOADD(progname); 1853 IOADD(": "); 1854 IOADD(af); 1855 IOADD("("); 1856 IOADD(av); 1857 IOADD(") failed ("); 1858 IOADD(strerror(errno)); 1859 IOADD(")\n"); 1860 1861 #ifdef USE_IOVEC 1862 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1863 continue; 1864 #endif 1865 } 1866 1867 /* 1868 * usage -- 1869 * exit with usage message 1870 */ 1871 static void 1872 usage(void) 1873 { 1874 char *p; 1875 if ((p = strchr(progname, '[')) != NULL) 1876 *p = '\0'; 1877 1878 (void)fprintf(stderr, 1879 "usage: %s [-BeikNnqrstWwX] \n\ 1880 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1881 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1882 [-V variable] [variable=value] [target ...]\n", progname); 1883 exit(2); 1884 } 1885 1886 1887 /* 1888 * realpath(3) can get expensive, cache results... 1889 */ 1890 char * 1891 cached_realpath(const char *pathname, char *resolved) 1892 { 1893 static GNode *cache; 1894 char *rp, *cp; 1895 1896 if (!pathname || !pathname[0]) 1897 return NULL; 1898 1899 if (!cache) { 1900 cache = Targ_NewGN("Realpath"); 1901 #ifndef DEBUG_REALPATH_CACHE 1902 cache->flags = INTERNAL; 1903 #endif 1904 } 1905 1906 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1907 /* a hit */ 1908 strlcpy(resolved, rp, MAXPATHLEN); 1909 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1910 Var_Set(pathname, rp, cache, 0); 1911 } 1912 free(cp); 1913 return rp ? resolved : NULL; 1914 } 1915 1916 int 1917 PrintAddr(void *a, void *b) 1918 { 1919 printf("%lx ", (unsigned long) a); 1920 return b ? 0 : 0; 1921 } 1922 1923 1924 static int 1925 addErrorCMD(void *cmdp, void *gnp) 1926 { 1927 if (cmdp == NULL) 1928 return 1; /* stop */ 1929 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1930 return 0; 1931 } 1932 1933 void 1934 PrintOnError(GNode *gn, const char *s) 1935 { 1936 static GNode *en = NULL; 1937 char tmp[64]; 1938 char *cp; 1939 1940 if (s) 1941 printf("%s", s); 1942 1943 printf("\n%s: stopped in %s\n", progname, curdir); 1944 1945 if (en) 1946 return; /* we've been here! */ 1947 if (gn) { 1948 /* 1949 * We can print this even if there is no .ERROR target. 1950 */ 1951 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1952 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 1953 Lst_ForEach(gn->commands, addErrorCMD, gn); 1954 } 1955 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1956 sizeof(tmp) - 1); 1957 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 1958 if (cp) { 1959 if (*cp) 1960 printf("%s", cp); 1961 free(cp); 1962 } 1963 fflush(stdout); 1964 1965 /* 1966 * Finally, see if there is a .ERROR target, and run it if so. 1967 */ 1968 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1969 if (en) { 1970 en->type |= OP_SPECIAL; 1971 Compat_Make(en, en); 1972 } 1973 } 1974 1975 void 1976 Main_ExportMAKEFLAGS(Boolean first) 1977 { 1978 static int once = 1; 1979 char tmp[64]; 1980 char *s; 1981 1982 if (once != first) 1983 return; 1984 once = 0; 1985 1986 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1987 sizeof(tmp)); 1988 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 1989 if (s && *s) { 1990 #ifdef POSIX 1991 setenv("MAKEFLAGS", s, 1); 1992 #else 1993 setenv("MAKE", s, 1); 1994 #endif 1995 } 1996 } 1997 1998 char * 1999 getTmpdir(void) 2000 { 2001 static char *tmpdir = NULL; 2002 2003 if (!tmpdir) { 2004 struct stat st; 2005 2006 /* 2007 * Honor $TMPDIR but only if it is valid. 2008 * Ensure it ends with /. 2009 */ 2010 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2011 VARF_WANTRES); 2012 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2013 free(tmpdir); 2014 tmpdir = bmake_strdup(_PATH_TMP); 2015 } 2016 } 2017 return tmpdir; 2018 } 2019 2020 /* 2021 * Create and open a temp file using "pattern". 2022 * If "fnamep" is provided set it to a copy of the filename created. 2023 * Otherwise unlink the file once open. 2024 */ 2025 int 2026 mkTempFile(const char *pattern, char **fnamep) 2027 { 2028 static char *tmpdir = NULL; 2029 char tfile[MAXPATHLEN]; 2030 int fd; 2031 2032 if (!pattern) 2033 pattern = TMPPAT; 2034 if (!tmpdir) 2035 tmpdir = getTmpdir(); 2036 if (pattern[0] == '/') { 2037 snprintf(tfile, sizeof(tfile), "%s", pattern); 2038 } else { 2039 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2040 } 2041 if ((fd = mkstemp(tfile)) < 0) 2042 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2043 if (fnamep) { 2044 *fnamep = bmake_strdup(tfile); 2045 } else { 2046 unlink(tfile); /* we just want the descriptor */ 2047 } 2048 return fd; 2049 } 2050 2051 /* 2052 * Convert a string representation of a boolean. 2053 * Anything that looks like "No", "False", "Off", "0" etc, 2054 * is FALSE, otherwise TRUE. 2055 */ 2056 Boolean 2057 s2Boolean(const char *s, Boolean bf) 2058 { 2059 if (s) { 2060 switch(*s) { 2061 case '\0': /* not set - the default wins */ 2062 break; 2063 case '0': 2064 case 'F': 2065 case 'f': 2066 case 'N': 2067 case 'n': 2068 bf = FALSE; 2069 break; 2070 case 'O': 2071 case 'o': 2072 switch (s[1]) { 2073 case 'F': 2074 case 'f': 2075 bf = FALSE; 2076 break; 2077 default: 2078 bf = TRUE; 2079 break; 2080 } 2081 break; 2082 default: 2083 bf = TRUE; 2084 break; 2085 } 2086 } 2087 return (bf); 2088 } 2089 2090 /* 2091 * Return a Boolean based on setting of a knob. 2092 * 2093 * If the knob is not set, the supplied default is the return value. 2094 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2095 * is FALSE, otherwise TRUE. 2096 */ 2097 Boolean 2098 getBoolean(const char *name, Boolean bf) 2099 { 2100 char tmp[64]; 2101 char *cp; 2102 2103 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2104 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2105 2106 if (cp) { 2107 bf = s2Boolean(cp, bf); 2108 free(cp); 2109 } 2110 } 2111 return (bf); 2112 } 2113