1 /* $NetBSD: main.c,v 1.242 2016/03/07 21:45:43 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.242 2016/03/07 21:45:43 christos Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.242 2016/03/07 21:45:43 christos Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and optional arguments 103 * for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and arguments for it. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and arguments for it. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/stat.h> 121 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include "wait.h" 126 127 #include <errno.h> 128 #include <signal.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 #include <ctype.h> 134 135 #include "make.h" 136 #include "hash.h" 137 #include "dir.h" 138 #include "job.h" 139 #include "pathnames.h" 140 #include "trace.h" 141 142 #ifdef USE_IOVEC 143 #include <sys/uio.h> 144 #endif 145 146 #ifndef DEFMAXLOCAL 147 #define DEFMAXLOCAL DEFMAXJOBS 148 #endif /* DEFMAXLOCAL */ 149 150 #ifndef __arraycount 151 # define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) 152 #endif 153 154 Lst create; /* Targets to be made */ 155 time_t now; /* Time at start of make */ 156 GNode *DEFAULT; /* .DEFAULT node */ 157 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 158 159 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 = 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 * Be compatible if user did not specify -j and did not explicitly 1156 * turned compatibility on 1157 */ 1158 if (!compatMake && !forceJobs) { 1159 compatMake = TRUE; 1160 } 1161 1162 /* 1163 * Initialize archive, target and suffix modules in preparation for 1164 * parsing the makefile(s) 1165 */ 1166 Arch_Init(); 1167 Targ_Init(); 1168 Suff_Init(); 1169 Trace_Init(tracefile); 1170 1171 DEFAULT = NULL; 1172 (void)time(&now); 1173 1174 Trace_Log(MAKESTART, NULL); 1175 1176 /* 1177 * Set up the .TARGETS variable to contain the list of targets to be 1178 * created. If none specified, make the variable empty -- the parser 1179 * will fill the thing in with the default or .MAIN target. 1180 */ 1181 if (!Lst_IsEmpty(create)) { 1182 LstNode ln; 1183 1184 for (ln = Lst_First(create); ln != NULL; 1185 ln = Lst_Succ(ln)) { 1186 char *name = (char *)Lst_Datum(ln); 1187 1188 Var_Append(".TARGETS", name, VAR_GLOBAL); 1189 } 1190 } else 1191 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1192 1193 1194 /* 1195 * If no user-supplied system path was given (through the -m option) 1196 * add the directories from the DEFSYSPATH (more than one may be given 1197 * as dir1:...:dirn) to the system include path. 1198 */ 1199 if (syspath == NULL || *syspath == '\0') 1200 syspath = defsyspath; 1201 else 1202 syspath = bmake_strdup(syspath); 1203 1204 for (start = syspath; *start != '\0'; start = cp) { 1205 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1206 continue; 1207 if (*cp == ':') { 1208 *cp++ = '\0'; 1209 } 1210 /* look for magic parent directory search string */ 1211 if (strncmp(".../", start, 4) != 0) { 1212 (void)Dir_AddDir(defIncPath, start); 1213 } else { 1214 if (Dir_FindHereOrAbove(curdir, start+4, 1215 found_path, sizeof(found_path))) { 1216 (void)Dir_AddDir(defIncPath, found_path); 1217 } 1218 } 1219 } 1220 if (syspath != defsyspath) 1221 free(syspath); 1222 1223 /* 1224 * Read in the built-in rules first, followed by the specified 1225 * makefile, if it was (makefile != NULL), or the default 1226 * makefile and Makefile, in that order, if it wasn't. 1227 */ 1228 if (!noBuiltins) { 1229 LstNode ln; 1230 1231 sysMkPath = Lst_Init(FALSE); 1232 Dir_Expand(_PATH_DEFSYSMK, 1233 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1234 sysMkPath); 1235 if (Lst_IsEmpty(sysMkPath)) 1236 Fatal("%s: no system rules (%s).", progname, 1237 _PATH_DEFSYSMK); 1238 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1239 if (ln == NULL) 1240 Fatal("%s: cannot open %s.", progname, 1241 (char *)Lst_Datum(ln)); 1242 } 1243 1244 if (!Lst_IsEmpty(makefiles)) { 1245 LstNode ln; 1246 1247 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1248 if (ln != NULL) 1249 Fatal("%s: cannot open %s.", progname, 1250 (char *)Lst_Datum(ln)); 1251 } else { 1252 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1253 VAR_CMD, VARF_WANTRES); 1254 if (p1) { 1255 (void)str2Lst_Append(makefiles, p1, NULL); 1256 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1257 free(p1); 1258 } 1259 } 1260 1261 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1262 if (!noBuiltins || !printVars) { 1263 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1264 VAR_CMD, VARF_WANTRES); 1265 doing_depend = TRUE; 1266 (void)ReadMakefile(makeDependfile, NULL); 1267 doing_depend = FALSE; 1268 } 1269 1270 if (enterFlagObj) 1271 printf("%s: Entering directory `%s'\n", progname, objdir); 1272 1273 MakeMode(NULL); 1274 1275 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1276 free(p1); 1277 1278 if (!compatMake) 1279 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1280 if (DEBUG(JOB)) 1281 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1282 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1283 1284 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1285 1286 /* 1287 * For compatibility, look at the directories in the VPATH variable 1288 * and add them to the search path, if the variable is defined. The 1289 * variable's value is in the same format as the PATH envariable, i.e. 1290 * <directory>:<directory>:<directory>... 1291 */ 1292 if (Var_Exists("VPATH", VAR_CMD)) { 1293 char *vpath, savec; 1294 /* 1295 * GCC stores string constants in read-only memory, but 1296 * Var_Subst will want to write this thing, so store it 1297 * in an array 1298 */ 1299 static char VPATH[] = "${VPATH}"; 1300 1301 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1302 path = vpath; 1303 do { 1304 /* skip to end of directory */ 1305 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1306 continue; 1307 /* Save terminator character so know when to stop */ 1308 savec = *cp; 1309 *cp = '\0'; 1310 /* Add directory to search path */ 1311 (void)Dir_AddDir(dirSearchPath, path); 1312 *cp = savec; 1313 path = cp + 1; 1314 } while (savec == ':'); 1315 free(vpath); 1316 } 1317 1318 /* 1319 * Now that all search paths have been read for suffixes et al, it's 1320 * time to add the default search path to their lists... 1321 */ 1322 Suff_DoPaths(); 1323 1324 /* 1325 * Propagate attributes through :: dependency lists. 1326 */ 1327 Targ_Propagate(); 1328 1329 /* print the initial graph, if the user requested it */ 1330 if (DEBUG(GRAPH1)) 1331 Targ_PrintGraph(1); 1332 1333 /* print the values of any variables requested by the user */ 1334 if (printVars) { 1335 LstNode ln; 1336 Boolean expandVars; 1337 1338 if (debugVflag) 1339 expandVars = FALSE; 1340 else 1341 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1342 for (ln = Lst_First(variables); ln != NULL; 1343 ln = Lst_Succ(ln)) { 1344 char *var = (char *)Lst_Datum(ln); 1345 char *value; 1346 1347 if (strchr(var, '$')) { 1348 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1349 VARF_WANTRES); 1350 } else if (expandVars) { 1351 char tmp[128]; 1352 1353 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1354 Fatal("%s: variable name too big: %s", 1355 progname, var); 1356 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1357 VARF_WANTRES); 1358 } else { 1359 value = Var_Value(var, VAR_GLOBAL, &p1); 1360 } 1361 printf("%s\n", value ? value : ""); 1362 free(p1); 1363 } 1364 } else { 1365 /* 1366 * Have now read the entire graph and need to make a list of 1367 * targets to create. If none was given on the command line, 1368 * we consult the parsing module to find the main target(s) 1369 * to create. 1370 */ 1371 if (Lst_IsEmpty(create)) 1372 targs = Parse_MainName(); 1373 else 1374 targs = Targ_FindList(create, TARG_CREATE); 1375 1376 if (!compatMake) { 1377 /* 1378 * Initialize job module before traversing the graph 1379 * now that any .BEGIN and .END targets have been read. 1380 * This is done only if the -q flag wasn't given 1381 * (to prevent the .BEGIN from being executed should 1382 * it exist). 1383 */ 1384 if (!queryFlag) { 1385 Job_Init(); 1386 jobsRunning = TRUE; 1387 } 1388 1389 /* Traverse the graph, checking on all the targets */ 1390 outOfDate = Make_Run(targs); 1391 } else { 1392 /* 1393 * Compat_Init will take care of creating all the 1394 * targets as well as initializing the module. 1395 */ 1396 Compat_Run(targs); 1397 } 1398 } 1399 1400 #ifdef CLEANUP 1401 Lst_Destroy(targs, NULL); 1402 Lst_Destroy(variables, NULL); 1403 Lst_Destroy(makefiles, NULL); 1404 Lst_Destroy(create, (FreeProc *)free); 1405 #endif 1406 1407 /* print the graph now it's been processed if the user requested it */ 1408 if (DEBUG(GRAPH2)) 1409 Targ_PrintGraph(2); 1410 1411 Trace_Log(MAKEEND, 0); 1412 1413 if (enterFlagObj) 1414 printf("%s: Leaving directory `%s'\n", progname, objdir); 1415 if (enterFlag) 1416 printf("%s: Leaving directory `%s'\n", progname, curdir); 1417 1418 #ifdef USE_META 1419 meta_finish(); 1420 #endif 1421 Suff_End(); 1422 Targ_End(); 1423 Arch_End(); 1424 Var_End(); 1425 Parse_End(); 1426 Dir_End(); 1427 Job_End(); 1428 Trace_End(); 1429 1430 return outOfDate ? 1 : 0; 1431 } 1432 1433 /*- 1434 * ReadMakefile -- 1435 * Open and parse the given makefile. 1436 * 1437 * Results: 1438 * 0 if ok. -1 if couldn't open file. 1439 * 1440 * Side Effects: 1441 * lots 1442 */ 1443 static int 1444 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1445 { 1446 const char *fname = p; /* makefile to read */ 1447 int fd; 1448 size_t len = MAXPATHLEN; 1449 char *name, *path = bmake_malloc(len); 1450 1451 if (!strcmp(fname, "-")) { 1452 Parse_File(NULL /*stdin*/, -1); 1453 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1454 } else { 1455 /* if we've chdir'd, rebuild the path name */ 1456 if (strcmp(curdir, objdir) && *fname != '/') { 1457 size_t plen = strlen(curdir) + strlen(fname) + 2; 1458 if (len < plen) 1459 path = bmake_realloc(path, len = 2 * plen); 1460 1461 (void)snprintf(path, len, "%s/%s", curdir, fname); 1462 fd = open(path, O_RDONLY); 1463 if (fd != -1) { 1464 fname = path; 1465 goto found; 1466 } 1467 1468 /* If curdir failed, try objdir (ala .depend) */ 1469 plen = strlen(objdir) + strlen(fname) + 2; 1470 if (len < plen) 1471 path = bmake_realloc(path, len = 2 * plen); 1472 (void)snprintf(path, len, "%s/%s", objdir, fname); 1473 fd = open(path, O_RDONLY); 1474 if (fd != -1) { 1475 fname = path; 1476 goto found; 1477 } 1478 } else { 1479 fd = open(fname, O_RDONLY); 1480 if (fd != -1) 1481 goto found; 1482 } 1483 /* look in -I and system include directories. */ 1484 name = Dir_FindFile(fname, parseIncPath); 1485 if (!name) 1486 name = Dir_FindFile(fname, 1487 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1488 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1489 free(name); 1490 free(path); 1491 return(-1); 1492 } 1493 fname = name; 1494 /* 1495 * set the MAKEFILE variable desired by System V fans -- the 1496 * placement of the setting here means it gets set to the last 1497 * makefile specified, as it is set by SysV make. 1498 */ 1499 found: 1500 if (!doing_depend) 1501 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1502 Parse_File(fname, fd); 1503 } 1504 free(path); 1505 return(0); 1506 } 1507 1508 1509 1510 /*- 1511 * Cmd_Exec -- 1512 * Execute the command in cmd, and return the output of that command 1513 * in a string. 1514 * 1515 * Results: 1516 * A string containing the output of the command, or the empty string 1517 * If errnum is not NULL, it contains the reason for the command failure 1518 * 1519 * Side Effects: 1520 * The string must be freed by the caller. 1521 */ 1522 char * 1523 Cmd_Exec(const char *cmd, const char **errnum) 1524 { 1525 const char *args[4]; /* Args for invoking the shell */ 1526 int fds[2]; /* Pipe streams */ 1527 int cpid; /* Child PID */ 1528 int pid; /* PID from wait() */ 1529 char *res; /* result */ 1530 WAIT_T status; /* command exit status */ 1531 Buffer buf; /* buffer to store the result */ 1532 char *cp; 1533 int cc; /* bytes read, or -1 */ 1534 int savederr; /* saved errno */ 1535 1536 1537 *errnum = NULL; 1538 1539 if (!shellName) 1540 Shell_Init(); 1541 /* 1542 * Set up arguments for shell 1543 */ 1544 args[0] = shellName; 1545 args[1] = "-c"; 1546 args[2] = cmd; 1547 args[3] = NULL; 1548 1549 /* 1550 * Open a pipe for fetching its output 1551 */ 1552 if (pipe(fds) == -1) { 1553 *errnum = "Couldn't create pipe for \"%s\""; 1554 goto bad; 1555 } 1556 1557 /* 1558 * Fork 1559 */ 1560 switch (cpid = vFork()) { 1561 case 0: 1562 /* 1563 * Close input side of pipe 1564 */ 1565 (void)close(fds[0]); 1566 1567 /* 1568 * Duplicate the output stream to the shell's output, then 1569 * shut the extra thing down. Note we don't fetch the error 1570 * stream...why not? Why? 1571 */ 1572 (void)dup2(fds[1], 1); 1573 (void)close(fds[1]); 1574 1575 Var_ExportVars(); 1576 1577 (void)execv(shellPath, UNCONST(args)); 1578 _exit(1); 1579 /*NOTREACHED*/ 1580 1581 case -1: 1582 *errnum = "Couldn't exec \"%s\""; 1583 goto bad; 1584 1585 default: 1586 /* 1587 * No need for the writing half 1588 */ 1589 (void)close(fds[1]); 1590 1591 savederr = 0; 1592 Buf_Init(&buf, 0); 1593 1594 do { 1595 char result[BUFSIZ]; 1596 cc = read(fds[0], result, sizeof(result)); 1597 if (cc > 0) 1598 Buf_AddBytes(&buf, cc, result); 1599 } 1600 while (cc > 0 || (cc == -1 && errno == EINTR)); 1601 if (cc == -1) 1602 savederr = errno; 1603 1604 /* 1605 * Close the input side of the pipe. 1606 */ 1607 (void)close(fds[0]); 1608 1609 /* 1610 * Wait for the process to exit. 1611 */ 1612 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1613 JobReapChild(pid, status, FALSE); 1614 continue; 1615 } 1616 cc = Buf_Size(&buf); 1617 res = Buf_Destroy(&buf, FALSE); 1618 1619 if (savederr != 0) 1620 *errnum = "Couldn't read shell's output for \"%s\""; 1621 1622 if (WIFSIGNALED(status)) 1623 *errnum = "\"%s\" exited on a signal"; 1624 else if (WEXITSTATUS(status) != 0) 1625 *errnum = "\"%s\" returned non-zero status"; 1626 1627 /* 1628 * Null-terminate the result, convert newlines to spaces and 1629 * install it in the variable. 1630 */ 1631 res[cc] = '\0'; 1632 cp = &res[cc]; 1633 1634 if (cc > 0 && *--cp == '\n') { 1635 /* 1636 * A final newline is just stripped 1637 */ 1638 *cp-- = '\0'; 1639 } 1640 while (cp >= res) { 1641 if (*cp == '\n') { 1642 *cp = ' '; 1643 } 1644 cp--; 1645 } 1646 break; 1647 } 1648 return res; 1649 bad: 1650 res = bmake_malloc(1); 1651 *res = '\0'; 1652 return res; 1653 } 1654 1655 /*- 1656 * Error -- 1657 * Print an error message given its format. 1658 * 1659 * Results: 1660 * None. 1661 * 1662 * Side Effects: 1663 * The message is printed. 1664 */ 1665 /* VARARGS */ 1666 void 1667 Error(const char *fmt, ...) 1668 { 1669 va_list ap; 1670 FILE *err_file; 1671 1672 err_file = debug_file; 1673 if (err_file == stdout) 1674 err_file = stderr; 1675 (void)fflush(stdout); 1676 for (;;) { 1677 va_start(ap, fmt); 1678 fprintf(err_file, "%s: ", progname); 1679 (void)vfprintf(err_file, fmt, ap); 1680 va_end(ap); 1681 (void)fprintf(err_file, "\n"); 1682 (void)fflush(err_file); 1683 if (err_file == stderr) 1684 break; 1685 err_file = stderr; 1686 } 1687 } 1688 1689 /*- 1690 * Fatal -- 1691 * Produce a Fatal error message. If jobs are running, waits for them 1692 * to finish. 1693 * 1694 * Results: 1695 * None 1696 * 1697 * Side Effects: 1698 * The program exits 1699 */ 1700 /* VARARGS */ 1701 void 1702 Fatal(const char *fmt, ...) 1703 { 1704 va_list ap; 1705 1706 va_start(ap, fmt); 1707 if (jobsRunning) 1708 Job_Wait(); 1709 1710 (void)fflush(stdout); 1711 (void)vfprintf(stderr, fmt, ap); 1712 va_end(ap); 1713 (void)fprintf(stderr, "\n"); 1714 (void)fflush(stderr); 1715 1716 PrintOnError(NULL, NULL); 1717 1718 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1719 Targ_PrintGraph(2); 1720 Trace_Log(MAKEERROR, 0); 1721 exit(2); /* Not 1 so -q can distinguish error */ 1722 } 1723 1724 /* 1725 * Punt -- 1726 * Major exception once jobs are being created. Kills all jobs, prints 1727 * a message and exits. 1728 * 1729 * Results: 1730 * None 1731 * 1732 * Side Effects: 1733 * All children are killed indiscriminately and the program Lib_Exits 1734 */ 1735 /* VARARGS */ 1736 void 1737 Punt(const char *fmt, ...) 1738 { 1739 va_list ap; 1740 1741 va_start(ap, fmt); 1742 (void)fflush(stdout); 1743 (void)fprintf(stderr, "%s: ", progname); 1744 (void)vfprintf(stderr, fmt, ap); 1745 va_end(ap); 1746 (void)fprintf(stderr, "\n"); 1747 (void)fflush(stderr); 1748 1749 PrintOnError(NULL, NULL); 1750 1751 DieHorribly(); 1752 } 1753 1754 /*- 1755 * DieHorribly -- 1756 * Exit without giving a message. 1757 * 1758 * Results: 1759 * None 1760 * 1761 * Side Effects: 1762 * A big one... 1763 */ 1764 void 1765 DieHorribly(void) 1766 { 1767 if (jobsRunning) 1768 Job_AbortAll(); 1769 if (DEBUG(GRAPH2)) 1770 Targ_PrintGraph(2); 1771 Trace_Log(MAKEERROR, 0); 1772 exit(2); /* Not 1, so -q can distinguish error */ 1773 } 1774 1775 /* 1776 * Finish -- 1777 * Called when aborting due to errors in child shell to signal 1778 * abnormal exit. 1779 * 1780 * Results: 1781 * None 1782 * 1783 * Side Effects: 1784 * The program exits 1785 */ 1786 void 1787 Finish(int errors) 1788 /* number of errors encountered in Make_Make */ 1789 { 1790 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1791 } 1792 1793 /* 1794 * eunlink -- 1795 * Remove a file carefully, avoiding directories. 1796 */ 1797 int 1798 eunlink(const char *file) 1799 { 1800 struct stat st; 1801 1802 if (lstat(file, &st) == -1) 1803 return -1; 1804 1805 if (S_ISDIR(st.st_mode)) { 1806 errno = EISDIR; 1807 return -1; 1808 } 1809 return unlink(file); 1810 } 1811 1812 /* 1813 * execError -- 1814 * Print why exec failed, avoiding stdio. 1815 */ 1816 void 1817 execError(const char *af, const char *av) 1818 { 1819 #ifdef USE_IOVEC 1820 int i = 0; 1821 struct iovec iov[8]; 1822 #define IOADD(s) \ 1823 (void)(iov[i].iov_base = UNCONST(s), \ 1824 iov[i].iov_len = strlen(iov[i].iov_base), \ 1825 i++) 1826 #else 1827 #define IOADD(s) (void)write(2, s, strlen(s)) 1828 #endif 1829 1830 IOADD(progname); 1831 IOADD(": "); 1832 IOADD(af); 1833 IOADD("("); 1834 IOADD(av); 1835 IOADD(") failed ("); 1836 IOADD(strerror(errno)); 1837 IOADD(")\n"); 1838 1839 #ifdef USE_IOVEC 1840 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1841 continue; 1842 #endif 1843 } 1844 1845 /* 1846 * usage -- 1847 * exit with usage message 1848 */ 1849 static void 1850 usage(void) 1851 { 1852 char *p; 1853 if ((p = strchr(progname, '[')) != NULL) 1854 *p = '\0'; 1855 1856 (void)fprintf(stderr, 1857 "usage: %s [-BeikNnqrstWwX] \n\ 1858 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1859 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1860 [-V variable] [variable=value] [target ...]\n", progname); 1861 exit(2); 1862 } 1863 1864 1865 int 1866 PrintAddr(void *a, void *b) 1867 { 1868 printf("%lx ", (unsigned long) a); 1869 return b ? 0 : 0; 1870 } 1871 1872 1873 1874 void 1875 PrintOnError(GNode *gn, const char *s) 1876 { 1877 static GNode *en = NULL; 1878 char tmp[64]; 1879 char *cp; 1880 1881 if (s) 1882 printf("%s", s); 1883 1884 printf("\n%s: stopped in %s\n", progname, curdir); 1885 1886 if (en) 1887 return; /* we've been here! */ 1888 if (gn) { 1889 /* 1890 * We can print this even if there is no .ERROR target. 1891 */ 1892 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1893 } 1894 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1895 sizeof(tmp) - 1); 1896 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 1897 if (cp) { 1898 if (*cp) 1899 printf("%s", cp); 1900 free(cp); 1901 } 1902 fflush(stdout); 1903 1904 /* 1905 * Finally, see if there is a .ERROR target, and run it if so. 1906 */ 1907 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1908 if (en) { 1909 en->type |= OP_SPECIAL; 1910 Compat_Make(en, en); 1911 } 1912 } 1913 1914 void 1915 Main_ExportMAKEFLAGS(Boolean first) 1916 { 1917 static int once = 1; 1918 char tmp[64]; 1919 char *s; 1920 1921 if (once != first) 1922 return; 1923 once = 0; 1924 1925 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1926 sizeof(tmp)); 1927 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 1928 if (s && *s) { 1929 #ifdef POSIX 1930 setenv("MAKEFLAGS", s, 1); 1931 #else 1932 setenv("MAKE", s, 1); 1933 #endif 1934 } 1935 } 1936 1937 char * 1938 getTmpdir(void) 1939 { 1940 static char *tmpdir = NULL; 1941 1942 if (!tmpdir) { 1943 struct stat st; 1944 1945 /* 1946 * Honor $TMPDIR but only if it is valid. 1947 * Ensure it ends with /. 1948 */ 1949 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 1950 VARF_WANTRES); 1951 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1952 free(tmpdir); 1953 tmpdir = bmake_strdup(_PATH_TMP); 1954 } 1955 } 1956 return tmpdir; 1957 } 1958 1959 /* 1960 * Create and open a temp file using "pattern". 1961 * If "fnamep" is provided set it to a copy of the filename created. 1962 * Otherwise unlink the file once open. 1963 */ 1964 int 1965 mkTempFile(const char *pattern, char **fnamep) 1966 { 1967 static char *tmpdir = NULL; 1968 char tfile[MAXPATHLEN]; 1969 int fd; 1970 1971 if (!pattern) 1972 pattern = TMPPAT; 1973 if (!tmpdir) 1974 tmpdir = getTmpdir(); 1975 if (pattern[0] == '/') { 1976 snprintf(tfile, sizeof(tfile), "%s", pattern); 1977 } else { 1978 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1979 } 1980 if ((fd = mkstemp(tfile)) < 0) 1981 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1982 if (fnamep) { 1983 *fnamep = bmake_strdup(tfile); 1984 } else { 1985 unlink(tfile); /* we just want the descriptor */ 1986 } 1987 return fd; 1988 } 1989 1990 /* 1991 * Convert a string representation of a boolean. 1992 * Anything that looks like "No", "False", "Off", "0" etc, 1993 * is FALSE, otherwise TRUE. 1994 */ 1995 Boolean 1996 s2Boolean(const char *s, Boolean bf) 1997 { 1998 if (s) { 1999 switch(*s) { 2000 case '\0': /* not set - the default wins */ 2001 break; 2002 case '0': 2003 case 'F': 2004 case 'f': 2005 case 'N': 2006 case 'n': 2007 bf = FALSE; 2008 break; 2009 case 'O': 2010 case 'o': 2011 switch (s[1]) { 2012 case 'F': 2013 case 'f': 2014 bf = FALSE; 2015 break; 2016 default: 2017 bf = TRUE; 2018 break; 2019 } 2020 break; 2021 default: 2022 bf = TRUE; 2023 break; 2024 } 2025 } 2026 return (bf); 2027 } 2028 2029 /* 2030 * Return a Boolean based on setting of a knob. 2031 * 2032 * If the knob is not set, the supplied default is the return value. 2033 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2034 * is FALSE, otherwise TRUE. 2035 */ 2036 Boolean 2037 getBoolean(const char *name, Boolean bf) 2038 { 2039 char tmp[64]; 2040 char *cp; 2041 2042 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2043 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2044 2045 if (cp) { 2046 bf = s2Boolean(cp, bf); 2047 free(cp); 2048 } 2049 } 2050 return (bf); 2051 } 2052