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