main.c revision 1.236
1 /* $NetBSD: main.c,v 1.236 2016/01/09 00:55:17 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 1.236 2016/01/09 00:55:17 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 1.236 2016/01/09 00:55:17 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 #ifdef MAKE_NATIVE 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <fcntl.h> 129 #include <signal.h> 130 #include <stdarg.h> 131 #include <stdio.h> 132 #include <stdlib.h> 133 #include <time.h> 134 #include <ctype.h> 135 136 #include "make.h" 137 #include "hash.h" 138 #include "dir.h" 139 #include "job.h" 140 #include "pathnames.h" 141 #include "trace.h" 142 143 #ifdef USE_IOVEC 144 #include <sys/uio.h> 145 #endif 146 147 #ifndef DEFMAXLOCAL 148 #define DEFMAXLOCAL DEFMAXJOBS 149 #endif /* DEFMAXLOCAL */ 150 151 Lst create; /* Targets to be made */ 152 time_t now; /* Time at start of make */ 153 GNode *DEFAULT; /* .DEFAULT node */ 154 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 155 156 static Boolean noBuiltins; /* -r flag */ 157 static Lst makefiles; /* ordered list of makefiles to read */ 158 static Boolean printVars; /* print value of one or more vars */ 159 static Lst variables; /* list of variables to print */ 160 int maxJobs; /* -j argument */ 161 static int maxJobTokens; /* -j argument */ 162 Boolean compatMake; /* -B argument */ 163 int debug; /* -d argument */ 164 Boolean debugVflag; /* -dV */ 165 Boolean noExecute; /* -n flag */ 166 Boolean noRecursiveExecute; /* -N flag */ 167 Boolean keepgoing; /* -k flag */ 168 Boolean queryFlag; /* -q flag */ 169 Boolean touchFlag; /* -t flag */ 170 Boolean enterFlag; /* -w flag */ 171 Boolean enterFlagObj; /* -w and objdir != srcdir */ 172 Boolean ignoreErrors; /* -i flag */ 173 Boolean beSilent; /* -s flag */ 174 Boolean oldVars; /* variable substitution style */ 175 Boolean checkEnvFirst; /* -e flag */ 176 Boolean parseWarnFatal; /* -W flag */ 177 Boolean jobServer; /* -J flag */ 178 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 179 Boolean varNoExportEnv; /* -X flag */ 180 Boolean doing_depend; /* Set while reading .depend */ 181 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 182 static const char * tracefile; 183 static void MainParseArgs(int, char **); 184 static int ReadMakefile(const void *, const void *); 185 static void usage(void) MAKE_ATTR_DEAD; 186 187 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 188 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 189 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 190 char *progname; /* the program name */ 191 char *makeDependfile; 192 pid_t myPid; 193 int makelevel; 194 195 Boolean forceJobs = FALSE; 196 197 extern Lst parseIncPath; 198 199 /* 200 * For compatibility with the POSIX version of MAKEFLAGS that includes 201 * all the options with out -, convert flags to -f -l -a -g -s. 202 */ 203 static char * 204 explode(const char *flags) 205 { 206 size_t len; 207 char *nf, *st; 208 const char *f; 209 210 if (flags == NULL) 211 return NULL; 212 213 for (f = flags; *f; f++) 214 if (!isalpha((unsigned char)*f)) 215 break; 216 217 if (*f) 218 return bmake_strdup(flags); 219 220 len = strlen(flags); 221 st = nf = bmake_malloc(len * 3 + 1); 222 while (*flags) { 223 *nf++ = '-'; 224 *nf++ = *flags++; 225 *nf++ = ' '; 226 } 227 *nf = '\0'; 228 return st; 229 } 230 231 static void 232 parse_debug_options(const char *argvalue) 233 { 234 const char *modules; 235 const char *mode; 236 char *fname; 237 int len; 238 239 for (modules = argvalue; *modules; ++modules) { 240 switch (*modules) { 241 case 'A': 242 debug = ~0; 243 break; 244 case 'a': 245 debug |= DEBUG_ARCH; 246 break; 247 case 'C': 248 debug |= DEBUG_CWD; 249 break; 250 case 'c': 251 debug |= DEBUG_COND; 252 break; 253 case 'd': 254 debug |= DEBUG_DIR; 255 break; 256 case 'e': 257 debug |= DEBUG_ERROR; 258 break; 259 case 'f': 260 debug |= DEBUG_FOR; 261 break; 262 case 'g': 263 if (modules[1] == '1') { 264 debug |= DEBUG_GRAPH1; 265 ++modules; 266 } 267 else if (modules[1] == '2') { 268 debug |= DEBUG_GRAPH2; 269 ++modules; 270 } 271 else if (modules[1] == '3') { 272 debug |= DEBUG_GRAPH3; 273 ++modules; 274 } 275 break; 276 case 'j': 277 debug |= DEBUG_JOB; 278 break; 279 case 'l': 280 debug |= DEBUG_LOUD; 281 break; 282 case 'M': 283 debug |= DEBUG_META; 284 break; 285 case 'm': 286 debug |= DEBUG_MAKE; 287 break; 288 case 'n': 289 debug |= DEBUG_SCRIPT; 290 break; 291 case 'p': 292 debug |= DEBUG_PARSE; 293 break; 294 case 's': 295 debug |= DEBUG_SUFF; 296 break; 297 case 't': 298 debug |= DEBUG_TARG; 299 break; 300 case 'V': 301 debugVflag = TRUE; 302 break; 303 case 'v': 304 debug |= DEBUG_VAR; 305 break; 306 case 'x': 307 debug |= DEBUG_SHELL; 308 break; 309 case 'F': 310 if (debug_file != stdout && debug_file != stderr) 311 fclose(debug_file); 312 if (*++modules == '+') { 313 modules++; 314 mode = "a"; 315 } else 316 mode = "w"; 317 if (strcmp(modules, "stdout") == 0) { 318 debug_file = stdout; 319 goto debug_setbuf; 320 } 321 if (strcmp(modules, "stderr") == 0) { 322 debug_file = stderr; 323 goto debug_setbuf; 324 } 325 len = strlen(modules); 326 fname = malloc(len + 20); 327 memcpy(fname, modules, len + 1); 328 /* Let the filename be modified by the pid */ 329 if (strcmp(fname + len - 3, ".%d") == 0) 330 snprintf(fname + len - 2, 20, "%d", getpid()); 331 debug_file = fopen(fname, mode); 332 if (!debug_file) { 333 fprintf(stderr, "Cannot open debug file %s\n", 334 fname); 335 usage(); 336 } 337 free(fname); 338 goto debug_setbuf; 339 default: 340 (void)fprintf(stderr, 341 "%s: illegal argument to d option -- %c\n", 342 progname, *modules); 343 usage(); 344 } 345 } 346 debug_setbuf: 347 /* 348 * Make the debug_file unbuffered, and make 349 * stdout line buffered (unless debugfile == stdout). 350 */ 351 setvbuf(debug_file, NULL, _IONBF, 0); 352 if (debug_file != stdout) { 353 setvbuf(stdout, NULL, _IOLBF, 0); 354 } 355 } 356 357 /*- 358 * MainParseArgs -- 359 * Parse a given argument vector. Called from main() and from 360 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 361 * 362 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 363 * 364 * Results: 365 * None 366 * 367 * Side Effects: 368 * Various global and local flags will be set depending on the flags 369 * given 370 */ 371 static void 372 MainParseArgs(int argc, char **argv) 373 { 374 char *p; 375 int c = '?'; 376 int arginc; 377 char *argvalue; 378 const char *getopt_def; 379 char *optscan; 380 Boolean inOption, dashDash = FALSE; 381 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 382 383 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 384 /* Can't actually use getopt(3) because rescanning is not portable */ 385 386 getopt_def = OPTFLAGS; 387 rearg: 388 inOption = FALSE; 389 optscan = NULL; 390 while(argc > 1) { 391 char *getopt_spec; 392 if(!inOption) 393 optscan = argv[1]; 394 c = *optscan++; 395 arginc = 0; 396 if(inOption) { 397 if(c == '\0') { 398 ++argv; 399 --argc; 400 inOption = FALSE; 401 continue; 402 } 403 } else { 404 if (c != '-' || dashDash) 405 break; 406 inOption = TRUE; 407 c = *optscan++; 408 } 409 /* '-' found at some earlier point */ 410 getopt_spec = strchr(getopt_def, c); 411 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 412 /* -<something> found, and <something> should have an arg */ 413 inOption = FALSE; 414 arginc = 1; 415 argvalue = optscan; 416 if(*argvalue == '\0') { 417 if (argc < 3) 418 goto noarg; 419 argvalue = argv[2]; 420 arginc = 2; 421 } 422 } else { 423 argvalue = NULL; 424 } 425 switch(c) { 426 case '\0': 427 arginc = 1; 428 inOption = FALSE; 429 break; 430 case 'B': 431 compatMake = TRUE; 432 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 433 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 434 break; 435 case 'C': 436 if (chdir(argvalue) == -1) { 437 (void)fprintf(stderr, 438 "%s: chdir %s: %s\n", 439 progname, argvalue, 440 strerror(errno)); 441 exit(1); 442 } 443 if (getcwd(curdir, MAXPATHLEN) == NULL) { 444 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 445 exit(2); 446 } 447 ignorePWD = TRUE; 448 break; 449 case 'D': 450 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 451 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 452 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 453 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 454 break; 455 case 'I': 456 if (argvalue == NULL) goto noarg; 457 Parse_AddIncludeDir(argvalue); 458 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 459 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 460 break; 461 case 'J': 462 if (argvalue == NULL) goto noarg; 463 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 464 (void)fprintf(stderr, 465 "%s: internal error -- J option malformed (%s)\n", 466 progname, argvalue); 467 usage(); 468 } 469 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 470 (fcntl(jp_1, F_GETFD, 0) < 0)) { 471 #if 0 472 (void)fprintf(stderr, 473 "%s: ###### warning -- J descriptors were closed!\n", 474 progname); 475 exit(2); 476 #endif 477 jp_0 = -1; 478 jp_1 = -1; 479 compatMake = TRUE; 480 } else { 481 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 482 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 483 jobServer = TRUE; 484 } 485 break; 486 case 'N': 487 noExecute = TRUE; 488 noRecursiveExecute = TRUE; 489 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 490 break; 491 case 'S': 492 keepgoing = FALSE; 493 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 494 break; 495 case 'T': 496 if (argvalue == NULL) goto noarg; 497 tracefile = bmake_strdup(argvalue); 498 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 499 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 500 break; 501 case 'V': 502 if (argvalue == NULL) goto noarg; 503 printVars = TRUE; 504 (void)Lst_AtEnd(variables, argvalue); 505 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 506 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 507 break; 508 case 'W': 509 parseWarnFatal = TRUE; 510 break; 511 case 'X': 512 varNoExportEnv = TRUE; 513 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 514 break; 515 case 'd': 516 if (argvalue == NULL) goto noarg; 517 /* If '-d-opts' don't pass to children */ 518 if (argvalue[0] == '-') 519 argvalue++; 520 else { 521 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 522 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 523 } 524 parse_debug_options(argvalue); 525 break; 526 case 'e': 527 checkEnvFirst = TRUE; 528 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 529 break; 530 case 'f': 531 if (argvalue == NULL) goto noarg; 532 (void)Lst_AtEnd(makefiles, argvalue); 533 break; 534 case 'i': 535 ignoreErrors = TRUE; 536 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 537 break; 538 case 'j': 539 if (argvalue == NULL) goto noarg; 540 forceJobs = TRUE; 541 maxJobs = strtol(argvalue, &p, 0); 542 if (*p != '\0' || maxJobs < 1) { 543 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 544 progname); 545 exit(1); 546 } 547 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 548 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 549 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 550 maxJobTokens = maxJobs; 551 break; 552 case 'k': 553 keepgoing = TRUE; 554 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 555 break; 556 case 'm': 557 if (argvalue == NULL) goto noarg; 558 /* look for magic parent directory search string */ 559 if (strncmp(".../", argvalue, 4) == 0) { 560 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 561 found_path, sizeof(found_path))) 562 break; /* nothing doing */ 563 (void)Dir_AddDir(sysIncPath, found_path); 564 } else { 565 (void)Dir_AddDir(sysIncPath, argvalue); 566 } 567 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 568 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 569 break; 570 case 'n': 571 noExecute = TRUE; 572 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 573 break; 574 case 'q': 575 queryFlag = TRUE; 576 /* Kind of nonsensical, wot? */ 577 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 578 break; 579 case 'r': 580 noBuiltins = TRUE; 581 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 582 break; 583 case 's': 584 beSilent = TRUE; 585 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 586 break; 587 case 't': 588 touchFlag = TRUE; 589 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 590 break; 591 case 'w': 592 enterFlag = TRUE; 593 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 594 break; 595 case '-': 596 dashDash = TRUE; 597 break; 598 default: 599 case '?': 600 usage(); 601 } 602 argv += arginc; 603 argc -= arginc; 604 } 605 606 oldVars = TRUE; 607 608 /* 609 * See if the rest of the arguments are variable assignments and 610 * perform them if so. Else take them to be targets and stuff them 611 * on the end of the "create" list. 612 */ 613 for (; argc > 1; ++argv, --argc) 614 if (Parse_IsVar(argv[1])) { 615 Parse_DoVar(argv[1], VAR_CMD); 616 } else { 617 if (!*argv[1]) 618 Punt("illegal (null) argument."); 619 if (*argv[1] == '-' && !dashDash) 620 goto rearg; 621 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 622 } 623 624 return; 625 noarg: 626 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 627 progname, c); 628 usage(); 629 } 630 631 /*- 632 * Main_ParseArgLine -- 633 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 634 * is encountered and by main() when reading the .MAKEFLAGS envariable. 635 * Takes a line of arguments and breaks it into its 636 * component words and passes those words and the number of them to the 637 * MainParseArgs function. 638 * The line should have all its leading whitespace removed. 639 * 640 * Input: 641 * line Line to fracture 642 * 643 * Results: 644 * None 645 * 646 * Side Effects: 647 * Only those that come from the various arguments. 648 */ 649 void 650 Main_ParseArgLine(const char *line) 651 { 652 char **argv; /* Manufactured argument vector */ 653 int argc; /* Number of arguments in argv */ 654 char *args; /* Space used by the args */ 655 char *buf, *p1; 656 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 657 size_t len; 658 659 if (line == NULL) 660 return; 661 for (; *line == ' '; ++line) 662 continue; 663 if (!*line) 664 return; 665 666 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 667 (void)snprintf(buf, len, "%s %s", argv0, line); 668 if (p1) 669 free(p1); 670 671 argv = brk_string(buf, &argc, TRUE, &args); 672 if (argv == NULL) { 673 Error("Unterminated quoted string [%s]", buf); 674 free(buf); 675 return; 676 } 677 free(buf); 678 MainParseArgs(argc, argv); 679 680 free(args); 681 free(argv); 682 } 683 684 Boolean 685 Main_SetObjdir(const char *path) 686 { 687 struct stat sb; 688 char *p = NULL; 689 char buf[MAXPATHLEN + 1]; 690 Boolean rc = FALSE; 691 692 /* expand variable substitutions */ 693 if (strchr(path, '$') != 0) { 694 snprintf(buf, MAXPATHLEN, "%s", path); 695 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, FALSE, TRUE, FALSE); 696 } 697 698 if (path[0] != '/') { 699 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 700 path = buf; 701 } 702 703 /* look for the directory and try to chdir there */ 704 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 705 if (chdir(path)) { 706 (void)fprintf(stderr, "make warning: %s: %s.\n", 707 path, strerror(errno)); 708 } else { 709 strncpy(objdir, path, MAXPATHLEN); 710 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 711 setenv("PWD", objdir, 1); 712 Dir_InitDot(); 713 rc = TRUE; 714 if (enterFlag && strcmp(objdir, curdir) != 0) 715 enterFlagObj = TRUE; 716 } 717 } 718 719 if (p) 720 free(p); 721 return rc; 722 } 723 724 /*- 725 * ReadAllMakefiles -- 726 * wrapper around ReadMakefile() to read all. 727 * 728 * Results: 729 * TRUE if ok, FALSE on error 730 */ 731 static int 732 ReadAllMakefiles(const void *p, const void *q) 733 { 734 return (ReadMakefile(p, q) == 0); 735 } 736 737 int 738 str2Lst_Append(Lst lp, char *str, const char *sep) 739 { 740 char *cp; 741 int n; 742 743 if (!sep) 744 sep = " \t"; 745 746 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 747 (void)Lst_AtEnd(lp, cp); 748 n++; 749 } 750 return (n); 751 } 752 753 #ifdef SIGINFO 754 /*ARGSUSED*/ 755 static void 756 siginfo(int signo MAKE_ATTR_UNUSED) 757 { 758 char dir[MAXPATHLEN]; 759 char str[2 * MAXPATHLEN]; 760 int len; 761 if (getcwd(dir, sizeof(dir)) == NULL) 762 return; 763 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 764 if (len > 0) 765 (void)write(STDERR_FILENO, str, (size_t)len); 766 } 767 #endif 768 769 /* 770 * Allow makefiles some control over the mode we run in. 771 */ 772 void 773 MakeMode(const char *mode) 774 { 775 char *mp = NULL; 776 777 if (!mode) 778 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 779 VAR_GLOBAL, FALSE, TRUE, FALSE); 780 781 if (mode && *mode) { 782 if (strstr(mode, "compat")) { 783 compatMake = TRUE; 784 forceJobs = FALSE; 785 } 786 #if USE_META 787 if (strstr(mode, "meta")) 788 meta_mode_init(mode); 789 #endif 790 } 791 if (mp) 792 free(mp); 793 } 794 795 /*- 796 * main -- 797 * The main function, for obvious reasons. Initializes variables 798 * and a few modules, then parses the arguments give it in the 799 * environment and on the command line. Reads the system makefile 800 * followed by either Makefile, makefile or the file given by the 801 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 802 * flags it has received by then uses either the Make or the Compat 803 * module to create the initial list of targets. 804 * 805 * Results: 806 * If -q was given, exits -1 if anything was out-of-date. Else it exits 807 * 0. 808 * 809 * Side Effects: 810 * The program exits when done. Targets are created. etc. etc. etc. 811 */ 812 int 813 main(int argc, char **argv) 814 { 815 Lst targs; /* target nodes to create -- passed to Make_Init */ 816 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 817 struct stat sb, sa; 818 char *p1, *path; 819 char mdpath[MAXPATHLEN]; 820 const char *machine = getenv("MACHINE"); 821 const char *machine_arch = getenv("MACHINE_ARCH"); 822 char *syspath = getenv("MAKESYSPATH"); 823 Lst sysMkPath; /* Path of sys.mk */ 824 char *cp = NULL, *start; 825 /* avoid faults on read-only strings */ 826 static char defsyspath[] = _PATH_DEFSYSPATH; 827 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 828 struct timeval rightnow; /* to initialize random seed */ 829 struct utsname utsname; 830 831 /* default to writing debug to stderr */ 832 debug_file = stderr; 833 834 #ifdef SIGINFO 835 (void)bmake_signal(SIGINFO, siginfo); 836 #endif 837 /* 838 * Set the seed to produce a different random sequence 839 * on each program execution. 840 */ 841 gettimeofday(&rightnow, NULL); 842 srandom(rightnow.tv_sec + rightnow.tv_usec); 843 844 if ((progname = strrchr(argv[0], '/')) != NULL) 845 progname++; 846 else 847 progname = argv[0]; 848 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 849 /* 850 * get rid of resource limit on file descriptors 851 */ 852 { 853 struct rlimit rl; 854 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 855 rl.rlim_cur != rl.rlim_max) { 856 rl.rlim_cur = rl.rlim_max; 857 (void)setrlimit(RLIMIT_NOFILE, &rl); 858 } 859 } 860 #endif 861 862 if (uname(&utsname) == -1) { 863 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 864 strerror(errno)); 865 exit(2); 866 } 867 868 /* 869 * Get the name of this type of MACHINE from utsname 870 * so we can share an executable for similar machines. 871 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 872 * 873 * Note that both MACHINE and MACHINE_ARCH are decided at 874 * run-time. 875 */ 876 if (!machine) { 877 #ifdef MAKE_NATIVE 878 machine = utsname.machine; 879 #else 880 #ifdef MAKE_MACHINE 881 machine = MAKE_MACHINE; 882 #else 883 machine = "unknown"; 884 #endif 885 #endif 886 } 887 888 if (!machine_arch) { 889 #ifdef MAKE_NATIVE 890 static char machine_arch_buf[sizeof(utsname.machine)]; 891 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 892 size_t len = sizeof(machine_arch_buf); 893 894 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 895 &len, NULL, 0) < 0) { 896 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 897 strerror(errno)); 898 exit(2); 899 } 900 901 machine_arch = machine_arch_buf; 902 #else 903 #ifndef MACHINE_ARCH 904 #ifdef MAKE_MACHINE_ARCH 905 machine_arch = MAKE_MACHINE_ARCH; 906 #else 907 machine_arch = "unknown"; 908 #endif 909 #else 910 machine_arch = MACHINE_ARCH; 911 #endif 912 #endif 913 } 914 915 myPid = getpid(); /* remember this for vFork() */ 916 917 /* 918 * Just in case MAKEOBJDIR wants us to do something tricky. 919 */ 920 Var_Init(); /* Initialize the lists of variables for 921 * parsing arguments */ 922 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 923 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 924 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 925 #ifdef MAKE_VERSION 926 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 927 #endif 928 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 929 /* 930 * This is the traditional preference for makefiles. 931 */ 932 #ifndef MAKEFILE_PREFERENCE_LIST 933 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 934 #endif 935 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 936 VAR_GLOBAL, 0); 937 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 938 939 create = Lst_Init(FALSE); 940 makefiles = Lst_Init(FALSE); 941 printVars = FALSE; 942 debugVflag = FALSE; 943 variables = Lst_Init(FALSE); 944 beSilent = FALSE; /* Print commands as executed */ 945 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 946 noExecute = FALSE; /* Execute all commands */ 947 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 948 keepgoing = FALSE; /* Stop on error */ 949 allPrecious = FALSE; /* Remove targets when interrupted */ 950 queryFlag = FALSE; /* This is not just a check-run */ 951 noBuiltins = FALSE; /* Read the built-in rules */ 952 touchFlag = FALSE; /* Actually update targets */ 953 debug = 0; /* No debug verbosity, please. */ 954 jobsRunning = FALSE; 955 956 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 957 maxJobTokens = maxJobs; 958 compatMake = FALSE; /* No compat mode */ 959 ignorePWD = FALSE; 960 961 /* 962 * Initialize the parsing, directory and variable modules to prepare 963 * for the reading of inclusion paths and variable settings on the 964 * command line 965 */ 966 967 /* 968 * Initialize various variables. 969 * MAKE also gets this name, for compatibility 970 * .MAKEFLAGS gets set to the empty string just in case. 971 * MFLAGS also gets initialized empty, for compatibility. 972 */ 973 Parse_Init(); 974 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 975 /* 976 * Leave alone if it is an absolute path, or if it does 977 * not contain a '/' in which case we need to find it in 978 * the path, like execvp(3) and the shells do. 979 */ 980 p1 = argv[0]; 981 } else { 982 /* 983 * A relative path, canonicalize it. 984 */ 985 p1 = realpath(argv[0], mdpath); 986 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 987 p1 = argv[0]; /* realpath failed */ 988 } 989 } 990 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 991 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 992 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 993 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 994 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 995 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 996 /* some makefiles need to know this */ 997 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 998 999 /* 1000 * Set some other useful macros 1001 */ 1002 { 1003 char tmp[64], *ep; 1004 1005 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1006 if (makelevel < 0) 1007 makelevel = 0; 1008 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1009 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1010 snprintf(tmp, sizeof(tmp), "%u", myPid); 1011 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1012 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1013 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1014 } 1015 if (makelevel > 0) { 1016 char pn[1024]; 1017 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1018 progname = bmake_strdup(pn); 1019 } 1020 1021 #ifdef USE_META 1022 meta_init(); 1023 #endif 1024 /* 1025 * First snag any flags out of the MAKE environment variable. 1026 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1027 * in a different format). 1028 */ 1029 #ifdef POSIX 1030 p1 = explode(getenv("MAKEFLAGS")); 1031 Main_ParseArgLine(p1); 1032 free(p1); 1033 #else 1034 Main_ParseArgLine(getenv("MAKE")); 1035 #endif 1036 1037 /* 1038 * Find where we are (now). 1039 * We take care of PWD for the automounter below... 1040 */ 1041 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1042 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1043 progname, strerror(errno)); 1044 exit(2); 1045 } 1046 1047 MainParseArgs(argc, argv); 1048 1049 if (enterFlag) 1050 printf("%s: Entering directory `%s'\n", progname, curdir); 1051 1052 /* 1053 * Verify that cwd is sane. 1054 */ 1055 if (stat(curdir, &sa) == -1) { 1056 (void)fprintf(stderr, "%s: %s: %s.\n", 1057 progname, curdir, strerror(errno)); 1058 exit(2); 1059 } 1060 1061 /* 1062 * All this code is so that we know where we are when we start up 1063 * on a different machine with pmake. 1064 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1065 * since the value of curdir can vary depending on how we got 1066 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1067 * or via subdir.mk in which case its likely a shell which does 1068 * not provide it. 1069 * So, to stop it breaking this case only, we ignore PWD if 1070 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1071 */ 1072 #ifndef NO_PWD_OVERRIDE 1073 if (!ignorePWD) { 1074 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1075 1076 if ((pwd = getenv("PWD")) != NULL && 1077 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1078 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1079 VAR_CMD, &ptmp2); 1080 1081 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1082 if (stat(pwd, &sb) == 0 && 1083 sa.st_ino == sb.st_ino && 1084 sa.st_dev == sb.st_dev) 1085 (void)strncpy(curdir, pwd, MAXPATHLEN); 1086 } 1087 } 1088 free(ptmp1); 1089 free(ptmp2); 1090 } 1091 #endif 1092 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1093 1094 /* 1095 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1096 * MAKEOBJDIR is set in the environment, try only that value 1097 * and fall back to .CURDIR if it does not exist. 1098 * 1099 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1100 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1101 * of these paths exist, just use .CURDIR. 1102 */ 1103 Dir_Init(curdir); 1104 (void)Main_SetObjdir(curdir); 1105 1106 if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) { 1107 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1108 (void)Main_SetObjdir(mdpath); 1109 free(p1); 1110 } else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) { 1111 (void)Main_SetObjdir(path); 1112 free(p1); 1113 } else { 1114 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1115 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1116 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1117 _PATH_OBJDIRPREFIX, curdir); 1118 (void)Main_SetObjdir(mdpath); 1119 } 1120 } 1121 1122 /* 1123 * Be compatible if user did not specify -j and did not explicitly 1124 * turned compatibility on 1125 */ 1126 if (!compatMake && !forceJobs) { 1127 compatMake = TRUE; 1128 } 1129 1130 /* 1131 * Initialize archive, target and suffix modules in preparation for 1132 * parsing the makefile(s) 1133 */ 1134 Arch_Init(); 1135 Targ_Init(); 1136 Suff_Init(); 1137 Trace_Init(tracefile); 1138 1139 DEFAULT = NULL; 1140 (void)time(&now); 1141 1142 Trace_Log(MAKESTART, NULL); 1143 1144 /* 1145 * Set up the .TARGETS variable to contain the list of targets to be 1146 * created. If none specified, make the variable empty -- the parser 1147 * will fill the thing in with the default or .MAIN target. 1148 */ 1149 if (!Lst_IsEmpty(create)) { 1150 LstNode ln; 1151 1152 for (ln = Lst_First(create); ln != NULL; 1153 ln = Lst_Succ(ln)) { 1154 char *name = (char *)Lst_Datum(ln); 1155 1156 Var_Append(".TARGETS", name, VAR_GLOBAL); 1157 } 1158 } else 1159 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1160 1161 1162 /* 1163 * If no user-supplied system path was given (through the -m option) 1164 * add the directories from the DEFSYSPATH (more than one may be given 1165 * as dir1:...:dirn) to the system include path. 1166 */ 1167 if (syspath == NULL || *syspath == '\0') 1168 syspath = defsyspath; 1169 else 1170 syspath = bmake_strdup(syspath); 1171 1172 for (start = syspath; *start != '\0'; start = cp) { 1173 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1174 continue; 1175 if (*cp == ':') { 1176 *cp++ = '\0'; 1177 } 1178 /* look for magic parent directory search string */ 1179 if (strncmp(".../", start, 4) != 0) { 1180 (void)Dir_AddDir(defIncPath, start); 1181 } else { 1182 if (Dir_FindHereOrAbove(curdir, start+4, 1183 found_path, sizeof(found_path))) { 1184 (void)Dir_AddDir(defIncPath, found_path); 1185 } 1186 } 1187 } 1188 if (syspath != defsyspath) 1189 free(syspath); 1190 1191 /* 1192 * Read in the built-in rules first, followed by the specified 1193 * makefile, if it was (makefile != NULL), or the default 1194 * makefile and Makefile, in that order, if it wasn't. 1195 */ 1196 if (!noBuiltins) { 1197 LstNode ln; 1198 1199 sysMkPath = Lst_Init(FALSE); 1200 Dir_Expand(_PATH_DEFSYSMK, 1201 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1202 sysMkPath); 1203 if (Lst_IsEmpty(sysMkPath)) 1204 Fatal("%s: no system rules (%s).", progname, 1205 _PATH_DEFSYSMK); 1206 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1207 if (ln == NULL) 1208 Fatal("%s: cannot open %s.", progname, 1209 (char *)Lst_Datum(ln)); 1210 } 1211 1212 if (!Lst_IsEmpty(makefiles)) { 1213 LstNode ln; 1214 1215 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1216 if (ln != NULL) 1217 Fatal("%s: cannot open %s.", progname, 1218 (char *)Lst_Datum(ln)); 1219 } else { 1220 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1221 VAR_CMD, FALSE, TRUE, FALSE); 1222 if (p1) { 1223 (void)str2Lst_Append(makefiles, p1, NULL); 1224 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1225 free(p1); 1226 } 1227 } 1228 1229 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1230 if (!noBuiltins || !printVars) { 1231 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1232 VAR_CMD, FALSE, TRUE, FALSE); 1233 doing_depend = TRUE; 1234 (void)ReadMakefile(makeDependfile, NULL); 1235 doing_depend = FALSE; 1236 } 1237 1238 if (enterFlagObj) 1239 printf("%s: Entering directory `%s'\n", progname, objdir); 1240 1241 MakeMode(NULL); 1242 1243 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1244 if (p1) 1245 free(p1); 1246 1247 if (!compatMake) 1248 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1249 if (DEBUG(JOB)) 1250 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1251 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1252 1253 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1254 1255 1256 /* 1257 * For compatibility, look at the directories in the VPATH variable 1258 * and add them to the search path, if the variable is defined. The 1259 * variable's value is in the same format as the PATH envariable, i.e. 1260 * <directory>:<directory>:<directory>... 1261 */ 1262 if (Var_Exists("VPATH", VAR_CMD)) { 1263 char *vpath, savec; 1264 /* 1265 * GCC stores string constants in read-only memory, but 1266 * Var_Subst will want to write this thing, so store it 1267 * in an array 1268 */ 1269 static char VPATH[] = "${VPATH}"; 1270 1271 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE, TRUE, FALSE); 1272 path = vpath; 1273 do { 1274 /* skip to end of directory */ 1275 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1276 continue; 1277 /* Save terminator character so know when to stop */ 1278 savec = *cp; 1279 *cp = '\0'; 1280 /* Add directory to search path */ 1281 (void)Dir_AddDir(dirSearchPath, path); 1282 *cp = savec; 1283 path = cp + 1; 1284 } while (savec == ':'); 1285 free(vpath); 1286 } 1287 1288 /* 1289 * Now that all search paths have been read for suffixes et al, it's 1290 * time to add the default search path to their lists... 1291 */ 1292 Suff_DoPaths(); 1293 1294 /* 1295 * Propagate attributes through :: dependency lists. 1296 */ 1297 Targ_Propagate(); 1298 1299 /* print the initial graph, if the user requested it */ 1300 if (DEBUG(GRAPH1)) 1301 Targ_PrintGraph(1); 1302 1303 /* print the values of any variables requested by the user */ 1304 if (printVars) { 1305 LstNode ln; 1306 Boolean expandVars; 1307 1308 if (debugVflag) 1309 expandVars = FALSE; 1310 else 1311 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1312 for (ln = Lst_First(variables); ln != NULL; 1313 ln = Lst_Succ(ln)) { 1314 char *var = (char *)Lst_Datum(ln); 1315 char *value; 1316 1317 if (strchr(var, '$')) { 1318 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1319 FALSE, TRUE, FALSE); 1320 } else if (expandVars) { 1321 char tmp[128]; 1322 1323 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1324 Fatal("%s: variable name too big: %s", 1325 progname, var); 1326 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1327 FALSE, TRUE, FALSE); 1328 } else { 1329 value = Var_Value(var, VAR_GLOBAL, &p1); 1330 } 1331 printf("%s\n", value ? value : ""); 1332 if (p1) 1333 free(p1); 1334 } 1335 } else { 1336 /* 1337 * Have now read the entire graph and need to make a list of 1338 * targets to create. If none was given on the command line, 1339 * we consult the parsing module to find the main target(s) 1340 * to create. 1341 */ 1342 if (Lst_IsEmpty(create)) 1343 targs = Parse_MainName(); 1344 else 1345 targs = Targ_FindList(create, TARG_CREATE); 1346 1347 if (!compatMake) { 1348 /* 1349 * Initialize job module before traversing the graph 1350 * now that any .BEGIN and .END targets have been read. 1351 * This is done only if the -q flag wasn't given 1352 * (to prevent the .BEGIN from being executed should 1353 * it exist). 1354 */ 1355 if (!queryFlag) { 1356 Job_Init(); 1357 jobsRunning = TRUE; 1358 } 1359 1360 /* Traverse the graph, checking on all the targets */ 1361 outOfDate = Make_Run(targs); 1362 } else { 1363 /* 1364 * Compat_Init will take care of creating all the 1365 * targets as well as initializing the module. 1366 */ 1367 Compat_Run(targs); 1368 } 1369 } 1370 1371 #ifdef CLEANUP 1372 Lst_Destroy(targs, NULL); 1373 Lst_Destroy(variables, NULL); 1374 Lst_Destroy(makefiles, NULL); 1375 Lst_Destroy(create, (FreeProc *)free); 1376 #endif 1377 1378 /* print the graph now it's been processed if the user requested it */ 1379 if (DEBUG(GRAPH2)) 1380 Targ_PrintGraph(2); 1381 1382 Trace_Log(MAKEEND, 0); 1383 1384 if (enterFlagObj) 1385 printf("%s: Leaving directory `%s'\n", progname, objdir); 1386 if (enterFlag) 1387 printf("%s: Leaving directory `%s'\n", progname, curdir); 1388 1389 Suff_End(); 1390 Targ_End(); 1391 Arch_End(); 1392 Var_End(); 1393 Parse_End(); 1394 Dir_End(); 1395 Job_End(); 1396 Trace_End(); 1397 1398 return outOfDate ? 1 : 0; 1399 } 1400 1401 /*- 1402 * ReadMakefile -- 1403 * Open and parse the given makefile. 1404 * 1405 * Results: 1406 * 0 if ok. -1 if couldn't open file. 1407 * 1408 * Side Effects: 1409 * lots 1410 */ 1411 static int 1412 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1413 { 1414 const char *fname = p; /* makefile to read */ 1415 int fd; 1416 size_t len = MAXPATHLEN; 1417 char *name, *path = bmake_malloc(len); 1418 1419 if (!strcmp(fname, "-")) { 1420 Parse_File(NULL /*stdin*/, -1); 1421 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1422 } else { 1423 /* if we've chdir'd, rebuild the path name */ 1424 if (strcmp(curdir, objdir) && *fname != '/') { 1425 size_t plen = strlen(curdir) + strlen(fname) + 2; 1426 if (len < plen) 1427 path = bmake_realloc(path, len = 2 * plen); 1428 1429 (void)snprintf(path, len, "%s/%s", curdir, fname); 1430 fd = open(path, O_RDONLY); 1431 if (fd != -1) { 1432 fname = path; 1433 goto found; 1434 } 1435 1436 /* If curdir failed, try objdir (ala .depend) */ 1437 plen = strlen(objdir) + strlen(fname) + 2; 1438 if (len < plen) 1439 path = bmake_realloc(path, len = 2 * plen); 1440 (void)snprintf(path, len, "%s/%s", objdir, fname); 1441 fd = open(path, O_RDONLY); 1442 if (fd != -1) { 1443 fname = path; 1444 goto found; 1445 } 1446 } else { 1447 fd = open(fname, O_RDONLY); 1448 if (fd != -1) 1449 goto found; 1450 } 1451 /* look in -I and system include directories. */ 1452 name = Dir_FindFile(fname, parseIncPath); 1453 if (!name) 1454 name = Dir_FindFile(fname, 1455 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1456 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1457 if (name) 1458 free(name); 1459 free(path); 1460 return(-1); 1461 } 1462 fname = name; 1463 /* 1464 * set the MAKEFILE variable desired by System V fans -- the 1465 * placement of the setting here means it gets set to the last 1466 * makefile specified, as it is set by SysV make. 1467 */ 1468 found: 1469 if (!doing_depend) 1470 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1471 Parse_File(fname, fd); 1472 } 1473 free(path); 1474 return(0); 1475 } 1476 1477 1478 1479 /*- 1480 * Cmd_Exec -- 1481 * Execute the command in cmd, and return the output of that command 1482 * in a string. 1483 * 1484 * Results: 1485 * A string containing the output of the command, or the empty string 1486 * If errnum is not NULL, it contains the reason for the command failure 1487 * 1488 * Side Effects: 1489 * The string must be freed by the caller. 1490 */ 1491 char * 1492 Cmd_Exec(const char *cmd, const char **errnum) 1493 { 1494 const char *args[4]; /* Args for invoking the shell */ 1495 int fds[2]; /* Pipe streams */ 1496 int cpid; /* Child PID */ 1497 int pid; /* PID from wait() */ 1498 char *res; /* result */ 1499 int status; /* command exit status */ 1500 Buffer buf; /* buffer to store the result */ 1501 char *cp; 1502 int cc; /* bytes read, or -1 */ 1503 int savederr; /* saved errno */ 1504 1505 1506 *errnum = NULL; 1507 1508 if (!shellName) 1509 Shell_Init(); 1510 /* 1511 * Set up arguments for shell 1512 */ 1513 args[0] = shellName; 1514 args[1] = "-c"; 1515 args[2] = cmd; 1516 args[3] = NULL; 1517 1518 /* 1519 * Open a pipe for fetching its output 1520 */ 1521 if (pipe(fds) == -1) { 1522 *errnum = "Couldn't create pipe for \"%s\""; 1523 goto bad; 1524 } 1525 1526 /* 1527 * Fork 1528 */ 1529 switch (cpid = vFork()) { 1530 case 0: 1531 /* 1532 * Close input side of pipe 1533 */ 1534 (void)close(fds[0]); 1535 1536 /* 1537 * Duplicate the output stream to the shell's output, then 1538 * shut the extra thing down. Note we don't fetch the error 1539 * stream...why not? Why? 1540 */ 1541 (void)dup2(fds[1], 1); 1542 (void)close(fds[1]); 1543 1544 Var_ExportVars(); 1545 1546 (void)execv(shellPath, UNCONST(args)); 1547 _exit(1); 1548 /*NOTREACHED*/ 1549 1550 case -1: 1551 *errnum = "Couldn't exec \"%s\""; 1552 goto bad; 1553 1554 default: 1555 /* 1556 * No need for the writing half 1557 */ 1558 (void)close(fds[1]); 1559 1560 savederr = 0; 1561 Buf_Init(&buf, 0); 1562 1563 do { 1564 char result[BUFSIZ]; 1565 cc = read(fds[0], result, sizeof(result)); 1566 if (cc > 0) 1567 Buf_AddBytes(&buf, cc, result); 1568 } 1569 while (cc > 0 || (cc == -1 && errno == EINTR)); 1570 if (cc == -1) 1571 savederr = errno; 1572 1573 /* 1574 * Close the input side of the pipe. 1575 */ 1576 (void)close(fds[0]); 1577 1578 /* 1579 * Wait for the process to exit. 1580 */ 1581 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1582 JobReapChild(pid, status, FALSE); 1583 continue; 1584 } 1585 cc = Buf_Size(&buf); 1586 res = Buf_Destroy(&buf, FALSE); 1587 1588 if (savederr != 0) 1589 *errnum = "Couldn't read shell's output for \"%s\""; 1590 1591 if (WIFSIGNALED(status)) 1592 *errnum = "\"%s\" exited on a signal"; 1593 else if (WEXITSTATUS(status) != 0) 1594 *errnum = "\"%s\" returned non-zero status"; 1595 1596 /* 1597 * Null-terminate the result, convert newlines to spaces and 1598 * install it in the variable. 1599 */ 1600 res[cc] = '\0'; 1601 cp = &res[cc]; 1602 1603 if (cc > 0 && *--cp == '\n') { 1604 /* 1605 * A final newline is just stripped 1606 */ 1607 *cp-- = '\0'; 1608 } 1609 while (cp >= res) { 1610 if (*cp == '\n') { 1611 *cp = ' '; 1612 } 1613 cp--; 1614 } 1615 break; 1616 } 1617 return res; 1618 bad: 1619 res = bmake_malloc(1); 1620 *res = '\0'; 1621 return res; 1622 } 1623 1624 /*- 1625 * Error -- 1626 * Print an error message given its format. 1627 * 1628 * Results: 1629 * None. 1630 * 1631 * Side Effects: 1632 * The message is printed. 1633 */ 1634 /* VARARGS */ 1635 void 1636 Error(const char *fmt, ...) 1637 { 1638 va_list ap; 1639 FILE *err_file; 1640 1641 err_file = debug_file; 1642 if (err_file == stdout) 1643 err_file = stderr; 1644 (void)fflush(stdout); 1645 for (;;) { 1646 va_start(ap, fmt); 1647 fprintf(err_file, "%s: ", progname); 1648 (void)vfprintf(err_file, fmt, ap); 1649 va_end(ap); 1650 (void)fprintf(err_file, "\n"); 1651 (void)fflush(err_file); 1652 if (err_file == stderr) 1653 break; 1654 err_file = stderr; 1655 } 1656 } 1657 1658 /*- 1659 * Fatal -- 1660 * Produce a Fatal error message. If jobs are running, waits for them 1661 * to finish. 1662 * 1663 * Results: 1664 * None 1665 * 1666 * Side Effects: 1667 * The program exits 1668 */ 1669 /* VARARGS */ 1670 void 1671 Fatal(const char *fmt, ...) 1672 { 1673 va_list ap; 1674 1675 va_start(ap, fmt); 1676 if (jobsRunning) 1677 Job_Wait(); 1678 1679 (void)fflush(stdout); 1680 (void)vfprintf(stderr, fmt, ap); 1681 va_end(ap); 1682 (void)fprintf(stderr, "\n"); 1683 (void)fflush(stderr); 1684 1685 PrintOnError(NULL, NULL); 1686 1687 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1688 Targ_PrintGraph(2); 1689 Trace_Log(MAKEERROR, 0); 1690 exit(2); /* Not 1 so -q can distinguish error */ 1691 } 1692 1693 /* 1694 * Punt -- 1695 * Major exception once jobs are being created. Kills all jobs, prints 1696 * a message and exits. 1697 * 1698 * Results: 1699 * None 1700 * 1701 * Side Effects: 1702 * All children are killed indiscriminately and the program Lib_Exits 1703 */ 1704 /* VARARGS */ 1705 void 1706 Punt(const char *fmt, ...) 1707 { 1708 va_list ap; 1709 1710 va_start(ap, fmt); 1711 (void)fflush(stdout); 1712 (void)fprintf(stderr, "%s: ", progname); 1713 (void)vfprintf(stderr, fmt, ap); 1714 va_end(ap); 1715 (void)fprintf(stderr, "\n"); 1716 (void)fflush(stderr); 1717 1718 PrintOnError(NULL, NULL); 1719 1720 DieHorribly(); 1721 } 1722 1723 /*- 1724 * DieHorribly -- 1725 * Exit without giving a message. 1726 * 1727 * Results: 1728 * None 1729 * 1730 * Side Effects: 1731 * A big one... 1732 */ 1733 void 1734 DieHorribly(void) 1735 { 1736 if (jobsRunning) 1737 Job_AbortAll(); 1738 if (DEBUG(GRAPH2)) 1739 Targ_PrintGraph(2); 1740 Trace_Log(MAKEERROR, 0); 1741 exit(2); /* Not 1, so -q can distinguish error */ 1742 } 1743 1744 /* 1745 * Finish -- 1746 * Called when aborting due to errors in child shell to signal 1747 * abnormal exit. 1748 * 1749 * Results: 1750 * None 1751 * 1752 * Side Effects: 1753 * The program exits 1754 */ 1755 void 1756 Finish(int errors) 1757 /* number of errors encountered in Make_Make */ 1758 { 1759 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1760 } 1761 1762 /* 1763 * eunlink -- 1764 * Remove a file carefully, avoiding directories. 1765 */ 1766 int 1767 eunlink(const char *file) 1768 { 1769 struct stat st; 1770 1771 if (lstat(file, &st) == -1) 1772 return -1; 1773 1774 if (S_ISDIR(st.st_mode)) { 1775 errno = EISDIR; 1776 return -1; 1777 } 1778 return unlink(file); 1779 } 1780 1781 /* 1782 * execError -- 1783 * Print why exec failed, avoiding stdio. 1784 */ 1785 void 1786 execError(const char *af, const char *av) 1787 { 1788 #ifdef USE_IOVEC 1789 int i = 0; 1790 struct iovec iov[8]; 1791 #define IOADD(s) \ 1792 (void)(iov[i].iov_base = UNCONST(s), \ 1793 iov[i].iov_len = strlen(iov[i].iov_base), \ 1794 i++) 1795 #else 1796 #define IOADD(void)write(2, s, strlen(s)) 1797 #endif 1798 1799 IOADD(progname); 1800 IOADD(": "); 1801 IOADD(af); 1802 IOADD("("); 1803 IOADD(av); 1804 IOADD(") failed ("); 1805 IOADD(strerror(errno)); 1806 IOADD(")\n"); 1807 1808 #ifdef USE_IOVEC 1809 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1810 continue; 1811 #endif 1812 } 1813 1814 /* 1815 * usage -- 1816 * exit with usage message 1817 */ 1818 static void 1819 usage(void) 1820 { 1821 char *p; 1822 if ((p = strchr(progname, '[')) != NULL) 1823 *p = '\0'; 1824 1825 (void)fprintf(stderr, 1826 "usage: %s [-BeikNnqrstWwX] \n\ 1827 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1828 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1829 [-V variable] [variable=value] [target ...]\n", progname); 1830 exit(2); 1831 } 1832 1833 1834 int 1835 PrintAddr(void *a, void *b) 1836 { 1837 printf("%lx ", (unsigned long) a); 1838 return b ? 0 : 0; 1839 } 1840 1841 1842 1843 void 1844 PrintOnError(GNode *gn, const char *s) 1845 { 1846 static GNode *en = NULL; 1847 char tmp[64]; 1848 char *cp; 1849 1850 if (s) 1851 printf("%s", s); 1852 1853 printf("\n%s: stopped in %s\n", progname, curdir); 1854 1855 if (en) 1856 return; /* we've been here! */ 1857 if (gn) { 1858 /* 1859 * We can print this even if there is no .ERROR target. 1860 */ 1861 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1862 } 1863 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1864 sizeof(tmp) - 1); 1865 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, FALSE, TRUE, FALSE); 1866 if (cp) { 1867 if (*cp) 1868 printf("%s", cp); 1869 free(cp); 1870 } 1871 fflush(stdout); 1872 1873 /* 1874 * Finally, see if there is a .ERROR target, and run it if so. 1875 */ 1876 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1877 if (en) { 1878 en->type |= OP_SPECIAL; 1879 Compat_Make(en, en); 1880 } 1881 } 1882 1883 void 1884 Main_ExportMAKEFLAGS(Boolean first) 1885 { 1886 static int once = 1; 1887 char tmp[64]; 1888 char *s; 1889 1890 if (once != first) 1891 return; 1892 once = 0; 1893 1894 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1895 sizeof(tmp)); 1896 s = Var_Subst(NULL, tmp, VAR_CMD, FALSE, TRUE, FALSE); 1897 if (s && *s) { 1898 #ifdef POSIX 1899 setenv("MAKEFLAGS", s, 1); 1900 #else 1901 setenv("MAKE", s, 1); 1902 #endif 1903 } 1904 } 1905 1906 char * 1907 getTmpdir(void) 1908 { 1909 static char *tmpdir = NULL; 1910 1911 if (!tmpdir) { 1912 struct stat st; 1913 1914 /* 1915 * Honor $TMPDIR but only if it is valid. 1916 * Ensure it ends with /. 1917 */ 1918 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 1919 FALSE, TRUE, FALSE); 1920 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1921 free(tmpdir); 1922 tmpdir = bmake_strdup(_PATH_TMP); 1923 } 1924 } 1925 return tmpdir; 1926 } 1927 1928 /* 1929 * Create and open a temp file using "pattern". 1930 * If "fnamep" is provided set it to a copy of the filename created. 1931 * Otherwise unlink the file once open. 1932 */ 1933 int 1934 mkTempFile(const char *pattern, char **fnamep) 1935 { 1936 static char *tmpdir = NULL; 1937 char tfile[MAXPATHLEN]; 1938 int fd; 1939 1940 if (!pattern) 1941 pattern = TMPPAT; 1942 if (!tmpdir) 1943 tmpdir = getTmpdir(); 1944 if (pattern[0] == '/') { 1945 snprintf(tfile, sizeof(tfile), "%s", pattern); 1946 } else { 1947 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1948 } 1949 if ((fd = mkstemp(tfile)) < 0) 1950 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1951 if (fnamep) { 1952 *fnamep = bmake_strdup(tfile); 1953 } else { 1954 unlink(tfile); /* we just want the descriptor */ 1955 } 1956 return fd; 1957 } 1958 1959 1960 /* 1961 * Return a Boolean based on setting of a knob. 1962 * 1963 * If the knob is not set, the supplied default is the return value. 1964 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1965 * is FALSE, otherwise TRUE. 1966 */ 1967 Boolean 1968 getBoolean(const char *name, Boolean bf) 1969 { 1970 char tmp[64]; 1971 char *cp; 1972 1973 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1974 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, FALSE, TRUE, FALSE); 1975 1976 if (cp) { 1977 switch(*cp) { 1978 case '\0': /* not set - the default wins */ 1979 break; 1980 case '0': 1981 case 'f': 1982 case 'n': 1983 bf = FALSE; 1984 break; 1985 case 'o': 1986 switch (cp[1]) { 1987 case 'f': 1988 bf = FALSE; 1989 break; 1990 default: 1991 bf = TRUE; 1992 break; 1993 } 1994 break; 1995 default: 1996 bf = TRUE; 1997 break; 1998 } 1999 free(cp); 2000 } 2001 } 2002 return (bf); 2003 } 2004
Indexes created Wed Sep 24 15:09:51 GMT 2025