main.c revision 1.232
1 /* $NetBSD: main.c,v 1.232 2015/03/26 22:20:42 sjg Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.232 2015/03/26 22:20:42 sjg Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.232 2015/03/26 22:20:42 sjg Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and optional arguments 103 * for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and arguments for it. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and arguments for it. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/stat.h> 121 #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 ignoreErrors; /* -i flag */ 172 Boolean beSilent; /* -s flag */ 173 Boolean oldVars; /* variable substitution style */ 174 Boolean checkEnvFirst; /* -e flag */ 175 Boolean parseWarnFatal; /* -W flag */ 176 Boolean jobServer; /* -J flag */ 177 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 178 Boolean varNoExportEnv; /* -X flag */ 179 Boolean doing_depend; /* Set while reading .depend */ 180 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 181 static const char * tracefile; 182 static void MainParseArgs(int, char **); 183 static int ReadMakefile(const void *, const void *); 184 static void usage(void) MAKE_ATTR_DEAD; 185 186 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 187 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 188 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 189 char *progname; /* the program name */ 190 char *makeDependfile; 191 pid_t myPid; 192 int makelevel; 193 194 Boolean forceJobs = FALSE; 195 196 extern Lst parseIncPath; 197 198 /* 199 * For compatibility with the POSIX version of MAKEFLAGS that includes 200 * all the options with out -, convert flags to -f -l -a -g -s. 201 */ 202 static char * 203 explode(const char *flags) 204 { 205 size_t len; 206 char *nf, *st; 207 const char *f; 208 209 if (flags == NULL) 210 return NULL; 211 212 for (f = flags; *f; f++) 213 if (!isalpha((unsigned char)*f)) 214 break; 215 216 if (*f) 217 return bmake_strdup(flags); 218 219 len = strlen(flags); 220 st = nf = bmake_malloc(len * 3 + 1); 221 while (*flags) { 222 *nf++ = '-'; 223 *nf++ = *flags++; 224 *nf++ = ' '; 225 } 226 *nf = '\0'; 227 return st; 228 } 229 230 static void 231 parse_debug_options(const char *argvalue) 232 { 233 const char *modules; 234 const char *mode; 235 char *fname; 236 int len; 237 238 for (modules = argvalue; *modules; ++modules) { 239 switch (*modules) { 240 case 'A': 241 debug = ~0; 242 break; 243 case 'a': 244 debug |= DEBUG_ARCH; 245 break; 246 case 'C': 247 debug |= DEBUG_CWD; 248 break; 249 case 'c': 250 debug |= DEBUG_COND; 251 break; 252 case 'd': 253 debug |= DEBUG_DIR; 254 break; 255 case 'e': 256 debug |= DEBUG_ERROR; 257 break; 258 case 'f': 259 debug |= DEBUG_FOR; 260 break; 261 case 'g': 262 if (modules[1] == '1') { 263 debug |= DEBUG_GRAPH1; 264 ++modules; 265 } 266 else if (modules[1] == '2') { 267 debug |= DEBUG_GRAPH2; 268 ++modules; 269 } 270 else if (modules[1] == '3') { 271 debug |= DEBUG_GRAPH3; 272 ++modules; 273 } 274 break; 275 case 'j': 276 debug |= DEBUG_JOB; 277 break; 278 case 'l': 279 debug |= DEBUG_LOUD; 280 break; 281 case 'M': 282 debug |= DEBUG_META; 283 break; 284 case 'm': 285 debug |= DEBUG_MAKE; 286 break; 287 case 'n': 288 debug |= DEBUG_SCRIPT; 289 break; 290 case 'p': 291 debug |= DEBUG_PARSE; 292 break; 293 case 's': 294 debug |= DEBUG_SUFF; 295 break; 296 case 't': 297 debug |= DEBUG_TARG; 298 break; 299 case 'V': 300 debugVflag = TRUE; 301 break; 302 case 'v': 303 debug |= DEBUG_VAR; 304 break; 305 case 'x': 306 debug |= DEBUG_SHELL; 307 break; 308 case 'F': 309 if (debug_file != stdout && debug_file != stderr) 310 fclose(debug_file); 311 if (*++modules == '+') { 312 modules++; 313 mode = "a"; 314 } else 315 mode = "w"; 316 if (strcmp(modules, "stdout") == 0) { 317 debug_file = stdout; 318 goto debug_setbuf; 319 } 320 if (strcmp(modules, "stderr") == 0) { 321 debug_file = stderr; 322 goto debug_setbuf; 323 } 324 len = strlen(modules); 325 fname = malloc(len + 20); 326 memcpy(fname, modules, len + 1); 327 /* Let the filename be modified by the pid */ 328 if (strcmp(fname + len - 3, ".%d") == 0) 329 snprintf(fname + len - 2, 20, "%d", getpid()); 330 debug_file = fopen(fname, mode); 331 if (!debug_file) { 332 fprintf(stderr, "Cannot open debug file %s\n", 333 fname); 334 usage(); 335 } 336 free(fname); 337 goto debug_setbuf; 338 default: 339 (void)fprintf(stderr, 340 "%s: illegal argument to d option -- %c\n", 341 progname, *modules); 342 usage(); 343 } 344 } 345 debug_setbuf: 346 /* 347 * Make the debug_file unbuffered, and make 348 * stdout line buffered (unless debugfile == stdout). 349 */ 350 setvbuf(debug_file, NULL, _IONBF, 0); 351 if (debug_file != stdout) { 352 setvbuf(stdout, NULL, _IOLBF, 0); 353 } 354 } 355 356 /*- 357 * MainParseArgs -- 358 * Parse a given argument vector. Called from main() and from 359 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 360 * 361 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 362 * 363 * Results: 364 * None 365 * 366 * Side Effects: 367 * Various global and local flags will be set depending on the flags 368 * given 369 */ 370 static void 371 MainParseArgs(int argc, char **argv) 372 { 373 char *p; 374 int c = '?'; 375 int arginc; 376 char *argvalue; 377 const char *getopt_def; 378 char *optscan; 379 Boolean inOption, dashDash = FALSE; 380 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 381 382 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 383 /* Can't actually use getopt(3) because rescanning is not portable */ 384 385 getopt_def = OPTFLAGS; 386 rearg: 387 inOption = FALSE; 388 optscan = NULL; 389 while(argc > 1) { 390 char *getopt_spec; 391 if(!inOption) 392 optscan = argv[1]; 393 c = *optscan++; 394 arginc = 0; 395 if(inOption) { 396 if(c == '\0') { 397 ++argv; 398 --argc; 399 inOption = FALSE; 400 continue; 401 } 402 } else { 403 if (c != '-' || dashDash) 404 break; 405 inOption = TRUE; 406 c = *optscan++; 407 } 408 /* '-' found at some earlier point */ 409 getopt_spec = strchr(getopt_def, c); 410 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 411 /* -<something> found, and <something> should have an arg */ 412 inOption = FALSE; 413 arginc = 1; 414 argvalue = optscan; 415 if(*argvalue == '\0') { 416 if (argc < 3) 417 goto noarg; 418 argvalue = argv[2]; 419 arginc = 2; 420 } 421 } else { 422 argvalue = NULL; 423 } 424 switch(c) { 425 case '\0': 426 arginc = 1; 427 inOption = FALSE; 428 break; 429 case 'B': 430 compatMake = TRUE; 431 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 432 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 433 break; 434 case 'C': 435 if (chdir(argvalue) == -1) { 436 (void)fprintf(stderr, 437 "%s: chdir %s: %s\n", 438 progname, argvalue, 439 strerror(errno)); 440 exit(1); 441 } 442 if (getcwd(curdir, MAXPATHLEN) == NULL) { 443 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 444 exit(2); 445 } 446 ignorePWD = TRUE; 447 break; 448 case 'D': 449 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 450 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 451 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 452 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 453 break; 454 case 'I': 455 if (argvalue == NULL) goto noarg; 456 Parse_AddIncludeDir(argvalue); 457 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 458 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 459 break; 460 case 'J': 461 if (argvalue == NULL) goto noarg; 462 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 463 (void)fprintf(stderr, 464 "%s: internal error -- J option malformed (%s)\n", 465 progname, argvalue); 466 usage(); 467 } 468 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 469 (fcntl(jp_1, F_GETFD, 0) < 0)) { 470 #if 0 471 (void)fprintf(stderr, 472 "%s: ###### warning -- J descriptors were closed!\n", 473 progname); 474 exit(2); 475 #endif 476 jp_0 = -1; 477 jp_1 = -1; 478 compatMake = TRUE; 479 } else { 480 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 481 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 482 jobServer = TRUE; 483 } 484 break; 485 case 'N': 486 noExecute = TRUE; 487 noRecursiveExecute = TRUE; 488 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 489 break; 490 case 'S': 491 keepgoing = FALSE; 492 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 493 break; 494 case 'T': 495 if (argvalue == NULL) goto noarg; 496 tracefile = bmake_strdup(argvalue); 497 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 498 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 499 break; 500 case 'V': 501 if (argvalue == NULL) goto noarg; 502 printVars = TRUE; 503 (void)Lst_AtEnd(variables, argvalue); 504 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 505 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 506 break; 507 case 'W': 508 parseWarnFatal = TRUE; 509 break; 510 case 'X': 511 varNoExportEnv = TRUE; 512 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 513 break; 514 case 'd': 515 if (argvalue == NULL) goto noarg; 516 /* If '-d-opts' don't pass to children */ 517 if (argvalue[0] == '-') 518 argvalue++; 519 else { 520 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 521 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 522 } 523 parse_debug_options(argvalue); 524 break; 525 case 'e': 526 checkEnvFirst = TRUE; 527 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 528 break; 529 case 'f': 530 if (argvalue == NULL) goto noarg; 531 (void)Lst_AtEnd(makefiles, argvalue); 532 break; 533 case 'i': 534 ignoreErrors = TRUE; 535 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 536 break; 537 case 'j': 538 if (argvalue == NULL) goto noarg; 539 forceJobs = TRUE; 540 maxJobs = strtol(argvalue, &p, 0); 541 if (*p != '\0' || maxJobs < 1) { 542 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 543 progname); 544 exit(1); 545 } 546 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 547 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 548 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 549 maxJobTokens = maxJobs; 550 break; 551 case 'k': 552 keepgoing = TRUE; 553 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 554 break; 555 case 'm': 556 if (argvalue == NULL) goto noarg; 557 /* look for magic parent directory search string */ 558 if (strncmp(".../", argvalue, 4) == 0) { 559 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 560 found_path, sizeof(found_path))) 561 break; /* nothing doing */ 562 (void)Dir_AddDir(sysIncPath, found_path); 563 } else { 564 (void)Dir_AddDir(sysIncPath, argvalue); 565 } 566 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 567 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 568 break; 569 case 'n': 570 noExecute = TRUE; 571 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 572 break; 573 case 'q': 574 queryFlag = TRUE; 575 /* Kind of nonsensical, wot? */ 576 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 577 break; 578 case 'r': 579 noBuiltins = TRUE; 580 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 581 break; 582 case 's': 583 beSilent = TRUE; 584 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 585 break; 586 case 't': 587 touchFlag = TRUE; 588 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 589 break; 590 case 'w': 591 enterFlag = TRUE; 592 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 593 break; 594 case '-': 595 dashDash = TRUE; 596 break; 597 default: 598 case '?': 599 usage(); 600 } 601 argv += arginc; 602 argc -= arginc; 603 } 604 605 oldVars = TRUE; 606 607 /* 608 * See if the rest of the arguments are variable assignments and 609 * perform them if so. Else take them to be targets and stuff them 610 * on the end of the "create" list. 611 */ 612 for (; argc > 1; ++argv, --argc) 613 if (Parse_IsVar(argv[1])) { 614 Parse_DoVar(argv[1], VAR_CMD); 615 } else { 616 if (!*argv[1]) 617 Punt("illegal (null) argument."); 618 if (*argv[1] == '-' && !dashDash) 619 goto rearg; 620 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 621 } 622 623 return; 624 noarg: 625 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 626 progname, c); 627 usage(); 628 } 629 630 /*- 631 * Main_ParseArgLine -- 632 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 633 * is encountered and by main() when reading the .MAKEFLAGS envariable. 634 * Takes a line of arguments and breaks it into its 635 * component words and passes those words and the number of them to the 636 * MainParseArgs function. 637 * The line should have all its leading whitespace removed. 638 * 639 * Input: 640 * line Line to fracture 641 * 642 * Results: 643 * None 644 * 645 * Side Effects: 646 * Only those that come from the various arguments. 647 */ 648 void 649 Main_ParseArgLine(const char *line) 650 { 651 char **argv; /* Manufactured argument vector */ 652 int argc; /* Number of arguments in argv */ 653 char *args; /* Space used by the args */ 654 char *buf, *p1; 655 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 656 size_t len; 657 658 if (line == NULL) 659 return; 660 for (; *line == ' '; ++line) 661 continue; 662 if (!*line) 663 return; 664 665 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 666 (void)snprintf(buf, len, "%s %s", argv0, line); 667 if (p1) 668 free(p1); 669 670 argv = brk_string(buf, &argc, TRUE, &args); 671 if (argv == NULL) { 672 Error("Unterminated quoted string [%s]", buf); 673 free(buf); 674 return; 675 } 676 free(buf); 677 MainParseArgs(argc, argv); 678 679 free(args); 680 free(argv); 681 } 682 683 Boolean 684 Main_SetObjdir(const char *path) 685 { 686 struct stat sb; 687 char *p = NULL; 688 char buf[MAXPATHLEN + 1]; 689 Boolean rc = FALSE; 690 691 /* expand variable substitutions */ 692 if (strchr(path, '$') != 0) { 693 snprintf(buf, MAXPATHLEN, "%s", path); 694 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 695 } 696 697 if (path[0] != '/') { 698 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 699 path = buf; 700 } 701 702 /* look for the directory and try to chdir there */ 703 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 704 if (chdir(path)) { 705 (void)fprintf(stderr, "make warning: %s: %s.\n", 706 path, strerror(errno)); 707 } else { 708 strncpy(objdir, path, MAXPATHLEN); 709 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 710 setenv("PWD", objdir, 1); 711 Dir_InitDot(); 712 rc = TRUE; 713 } 714 } 715 716 if (p) 717 free(p); 718 return rc; 719 } 720 721 /*- 722 * ReadAllMakefiles -- 723 * wrapper around ReadMakefile() to read all. 724 * 725 * Results: 726 * TRUE if ok, FALSE on error 727 */ 728 static int 729 ReadAllMakefiles(const void *p, const void *q) 730 { 731 return (ReadMakefile(p, q) == 0); 732 } 733 734 int 735 str2Lst_Append(Lst lp, char *str, const char *sep) 736 { 737 char *cp; 738 int n; 739 740 if (!sep) 741 sep = " \t"; 742 743 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 744 (void)Lst_AtEnd(lp, cp); 745 n++; 746 } 747 return (n); 748 } 749 750 #ifdef SIGINFO 751 /*ARGSUSED*/ 752 static void 753 siginfo(int signo MAKE_ATTR_UNUSED) 754 { 755 char dir[MAXPATHLEN]; 756 char str[2 * MAXPATHLEN]; 757 int len; 758 if (getcwd(dir, sizeof(dir)) == NULL) 759 return; 760 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 761 if (len > 0) 762 (void)write(STDERR_FILENO, str, (size_t)len); 763 } 764 #endif 765 766 /* 767 * Allow makefiles some control over the mode we run in. 768 */ 769 void 770 MakeMode(const char *mode) 771 { 772 char *mp = NULL; 773 774 if (!mode) 775 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 776 777 if (mode && *mode) { 778 if (strstr(mode, "compat")) { 779 compatMake = TRUE; 780 forceJobs = FALSE; 781 } 782 #if USE_META 783 if (strstr(mode, "meta")) 784 meta_mode_init(mode); 785 #endif 786 } 787 if (mp) 788 free(mp); 789 } 790 791 /*- 792 * main -- 793 * The main function, for obvious reasons. Initializes variables 794 * and a few modules, then parses the arguments give it in the 795 * environment and on the command line. Reads the system makefile 796 * followed by either Makefile, makefile or the file given by the 797 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 798 * flags it has received by then uses either the Make or the Compat 799 * module to create the initial list of targets. 800 * 801 * Results: 802 * If -q was given, exits -1 if anything was out-of-date. Else it exits 803 * 0. 804 * 805 * Side Effects: 806 * The program exits when done. Targets are created. etc. etc. etc. 807 */ 808 int 809 main(int argc, char **argv) 810 { 811 Lst targs; /* target nodes to create -- passed to Make_Init */ 812 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 813 struct stat sb, sa; 814 char *p1, *path; 815 char mdpath[MAXPATHLEN]; 816 const char *machine = getenv("MACHINE"); 817 const char *machine_arch = getenv("MACHINE_ARCH"); 818 char *syspath = getenv("MAKESYSPATH"); 819 Lst sysMkPath; /* Path of sys.mk */ 820 char *cp = NULL, *start; 821 /* avoid faults on read-only strings */ 822 static char defsyspath[] = _PATH_DEFSYSPATH; 823 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 824 struct timeval rightnow; /* to initialize random seed */ 825 struct utsname utsname; 826 827 /* default to writing debug to stderr */ 828 debug_file = stderr; 829 830 #ifdef SIGINFO 831 (void)bmake_signal(SIGINFO, siginfo); 832 #endif 833 /* 834 * Set the seed to produce a different random sequence 835 * on each program execution. 836 */ 837 gettimeofday(&rightnow, NULL); 838 srandom(rightnow.tv_sec + rightnow.tv_usec); 839 840 if ((progname = strrchr(argv[0], '/')) != NULL) 841 progname++; 842 else 843 progname = argv[0]; 844 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 845 /* 846 * get rid of resource limit on file descriptors 847 */ 848 { 849 struct rlimit rl; 850 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 851 rl.rlim_cur != rl.rlim_max) { 852 rl.rlim_cur = rl.rlim_max; 853 (void)setrlimit(RLIMIT_NOFILE, &rl); 854 } 855 } 856 #endif 857 858 if (uname(&utsname) == -1) { 859 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 860 strerror(errno)); 861 exit(2); 862 } 863 864 /* 865 * Get the name of this type of MACHINE from utsname 866 * so we can share an executable for similar machines. 867 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 868 * 869 * Note that both MACHINE and MACHINE_ARCH are decided at 870 * run-time. 871 */ 872 if (!machine) { 873 #ifdef MAKE_NATIVE 874 machine = utsname.machine; 875 #else 876 #ifdef MAKE_MACHINE 877 machine = MAKE_MACHINE; 878 #else 879 machine = "unknown"; 880 #endif 881 #endif 882 } 883 884 if (!machine_arch) { 885 #ifdef MAKE_NATIVE 886 static char machine_arch_buf[sizeof(utsname.machine)]; 887 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 888 size_t len = sizeof(machine_arch_buf); 889 890 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 891 &len, NULL, 0) < 0) { 892 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 893 strerror(errno)); 894 exit(2); 895 } 896 897 machine_arch = machine_arch_buf; 898 #else 899 #ifndef MACHINE_ARCH 900 #ifdef MAKE_MACHINE_ARCH 901 machine_arch = MAKE_MACHINE_ARCH; 902 #else 903 machine_arch = "unknown"; 904 #endif 905 #else 906 machine_arch = MACHINE_ARCH; 907 #endif 908 #endif 909 } 910 911 myPid = getpid(); /* remember this for vFork() */ 912 913 /* 914 * Just in case MAKEOBJDIR wants us to do something tricky. 915 */ 916 Var_Init(); /* Initialize the lists of variables for 917 * parsing arguments */ 918 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 919 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 920 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 921 #ifdef MAKE_VERSION 922 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 923 #endif 924 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 925 /* 926 * This is the traditional preference for makefiles. 927 */ 928 #ifndef MAKEFILE_PREFERENCE_LIST 929 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 930 #endif 931 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 932 VAR_GLOBAL, 0); 933 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 934 935 create = Lst_Init(FALSE); 936 makefiles = Lst_Init(FALSE); 937 printVars = FALSE; 938 debugVflag = FALSE; 939 variables = Lst_Init(FALSE); 940 beSilent = FALSE; /* Print commands as executed */ 941 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 942 noExecute = FALSE; /* Execute all commands */ 943 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 944 keepgoing = FALSE; /* Stop on error */ 945 allPrecious = FALSE; /* Remove targets when interrupted */ 946 queryFlag = FALSE; /* This is not just a check-run */ 947 noBuiltins = FALSE; /* Read the built-in rules */ 948 touchFlag = FALSE; /* Actually update targets */ 949 debug = 0; /* No debug verbosity, please. */ 950 jobsRunning = FALSE; 951 952 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 953 maxJobTokens = maxJobs; 954 compatMake = FALSE; /* No compat mode */ 955 ignorePWD = FALSE; 956 957 /* 958 * Initialize the parsing, directory and variable modules to prepare 959 * for the reading of inclusion paths and variable settings on the 960 * command line 961 */ 962 963 /* 964 * Initialize various variables. 965 * MAKE also gets this name, for compatibility 966 * .MAKEFLAGS gets set to the empty string just in case. 967 * MFLAGS also gets initialized empty, for compatibility. 968 */ 969 Parse_Init(); 970 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 971 /* 972 * Leave alone if it is an absolute path, or if it does 973 * not contain a '/' in which case we need to find it in 974 * the path, like execvp(3) and the shells do. 975 */ 976 p1 = argv[0]; 977 } else { 978 /* 979 * A relative path, canonicalize it. 980 */ 981 p1 = realpath(argv[0], mdpath); 982 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 983 p1 = argv[0]; /* realpath failed */ 984 } 985 } 986 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 987 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 988 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 989 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 990 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 991 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 992 /* some makefiles need to know this */ 993 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 994 995 /* 996 * Set some other useful macros 997 */ 998 { 999 char tmp[64], *ep; 1000 1001 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1002 if (makelevel < 0) 1003 makelevel = 0; 1004 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1005 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1006 snprintf(tmp, sizeof(tmp), "%u", myPid); 1007 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1008 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1009 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1010 } 1011 if (makelevel > 0) { 1012 char pn[1024]; 1013 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1014 progname = bmake_strdup(pn); 1015 } 1016 1017 #ifdef USE_META 1018 meta_init(); 1019 #endif 1020 /* 1021 * First snag any flags out of the MAKE environment variable. 1022 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1023 * in a different format). 1024 */ 1025 #ifdef POSIX 1026 p1 = explode(getenv("MAKEFLAGS")); 1027 Main_ParseArgLine(p1); 1028 free(p1); 1029 #else 1030 Main_ParseArgLine(getenv("MAKE")); 1031 #endif 1032 1033 /* 1034 * Find where we are (now). 1035 * We take care of PWD for the automounter below... 1036 */ 1037 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1038 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1039 progname, strerror(errno)); 1040 exit(2); 1041 } 1042 1043 MainParseArgs(argc, argv); 1044 1045 if (enterFlag) 1046 printf("%s: Entering directory `%s'\n", progname, curdir); 1047 1048 /* 1049 * Verify that cwd is sane. 1050 */ 1051 if (stat(curdir, &sa) == -1) { 1052 (void)fprintf(stderr, "%s: %s: %s.\n", 1053 progname, curdir, strerror(errno)); 1054 exit(2); 1055 } 1056 1057 /* 1058 * All this code is so that we know where we are when we start up 1059 * on a different machine with pmake. 1060 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1061 * since the value of curdir can vary depending on how we got 1062 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1063 * or via subdir.mk in which case its likely a shell which does 1064 * not provide it. 1065 * So, to stop it breaking this case only, we ignore PWD if 1066 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1067 */ 1068 #ifndef NO_PWD_OVERRIDE 1069 if (!ignorePWD) { 1070 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1071 1072 if ((pwd = getenv("PWD")) != NULL && 1073 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1074 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1075 VAR_CMD, &ptmp2); 1076 1077 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1078 if (stat(pwd, &sb) == 0 && 1079 sa.st_ino == sb.st_ino && 1080 sa.st_dev == sb.st_dev) 1081 (void)strncpy(curdir, pwd, MAXPATHLEN); 1082 } 1083 } 1084 free(ptmp1); 1085 free(ptmp2); 1086 } 1087 #endif 1088 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1089 1090 /* 1091 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1092 * MAKEOBJDIR is set in the environment, try only that value 1093 * and fall back to .CURDIR if it does not exist. 1094 * 1095 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1096 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1097 * of these paths exist, just use .CURDIR. 1098 */ 1099 Dir_Init(curdir); 1100 (void)Main_SetObjdir(curdir); 1101 1102 if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) { 1103 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1104 (void)Main_SetObjdir(mdpath); 1105 free(p1); 1106 } else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) { 1107 (void)Main_SetObjdir(path); 1108 free(p1); 1109 } else { 1110 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1111 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1112 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1113 _PATH_OBJDIRPREFIX, curdir); 1114 (void)Main_SetObjdir(mdpath); 1115 } 1116 } 1117 1118 /* 1119 * Be compatible if user did not specify -j and did not explicitly 1120 * turned compatibility on 1121 */ 1122 if (!compatMake && !forceJobs) { 1123 compatMake = TRUE; 1124 } 1125 1126 /* 1127 * Initialize archive, target and suffix modules in preparation for 1128 * parsing the makefile(s) 1129 */ 1130 Arch_Init(); 1131 Targ_Init(); 1132 Suff_Init(); 1133 Trace_Init(tracefile); 1134 1135 DEFAULT = NULL; 1136 (void)time(&now); 1137 1138 Trace_Log(MAKESTART, NULL); 1139 1140 /* 1141 * Set up the .TARGETS variable to contain the list of targets to be 1142 * created. If none specified, make the variable empty -- the parser 1143 * will fill the thing in with the default or .MAIN target. 1144 */ 1145 if (!Lst_IsEmpty(create)) { 1146 LstNode ln; 1147 1148 for (ln = Lst_First(create); ln != NULL; 1149 ln = Lst_Succ(ln)) { 1150 char *name = (char *)Lst_Datum(ln); 1151 1152 Var_Append(".TARGETS", name, VAR_GLOBAL); 1153 } 1154 } else 1155 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1156 1157 1158 /* 1159 * If no user-supplied system path was given (through the -m option) 1160 * add the directories from the DEFSYSPATH (more than one may be given 1161 * as dir1:...:dirn) to the system include path. 1162 */ 1163 if (syspath == NULL || *syspath == '\0') 1164 syspath = defsyspath; 1165 else 1166 syspath = bmake_strdup(syspath); 1167 1168 for (start = syspath; *start != '\0'; start = cp) { 1169 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1170 continue; 1171 if (*cp == ':') { 1172 *cp++ = '\0'; 1173 } 1174 /* look for magic parent directory search string */ 1175 if (strncmp(".../", start, 4) != 0) { 1176 (void)Dir_AddDir(defIncPath, start); 1177 } else { 1178 if (Dir_FindHereOrAbove(curdir, start+4, 1179 found_path, sizeof(found_path))) { 1180 (void)Dir_AddDir(defIncPath, found_path); 1181 } 1182 } 1183 } 1184 if (syspath != defsyspath) 1185 free(syspath); 1186 1187 /* 1188 * Read in the built-in rules first, followed by the specified 1189 * makefile, if it was (makefile != NULL), or the default 1190 * makefile and Makefile, in that order, if it wasn't. 1191 */ 1192 if (!noBuiltins) { 1193 LstNode ln; 1194 1195 sysMkPath = Lst_Init(FALSE); 1196 Dir_Expand(_PATH_DEFSYSMK, 1197 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1198 sysMkPath); 1199 if (Lst_IsEmpty(sysMkPath)) 1200 Fatal("%s: no system rules (%s).", progname, 1201 _PATH_DEFSYSMK); 1202 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1203 if (ln == NULL) 1204 Fatal("%s: cannot open %s.", progname, 1205 (char *)Lst_Datum(ln)); 1206 } 1207 1208 if (!Lst_IsEmpty(makefiles)) { 1209 LstNode ln; 1210 1211 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1212 if (ln != NULL) 1213 Fatal("%s: cannot open %s.", progname, 1214 (char *)Lst_Datum(ln)); 1215 } else { 1216 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1217 VAR_CMD, 0); 1218 if (p1) { 1219 (void)str2Lst_Append(makefiles, p1, NULL); 1220 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1221 free(p1); 1222 } 1223 } 1224 1225 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1226 if (!noBuiltins || !printVars) { 1227 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1228 VAR_CMD, 0); 1229 doing_depend = TRUE; 1230 (void)ReadMakefile(makeDependfile, NULL); 1231 doing_depend = FALSE; 1232 } 1233 1234 MakeMode(NULL); 1235 1236 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1237 if (p1) 1238 free(p1); 1239 1240 if (!compatMake) 1241 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1242 if (DEBUG(JOB)) 1243 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1244 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1245 1246 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1247 1248 1249 /* 1250 * For compatibility, look at the directories in the VPATH variable 1251 * and add them to the search path, if the variable is defined. The 1252 * variable's value is in the same format as the PATH envariable, i.e. 1253 * <directory>:<directory>:<directory>... 1254 */ 1255 if (Var_Exists("VPATH", VAR_CMD)) { 1256 char *vpath, savec; 1257 /* 1258 * GCC stores string constants in read-only memory, but 1259 * Var_Subst will want to write this thing, so store it 1260 * in an array 1261 */ 1262 static char VPATH[] = "${VPATH}"; 1263 1264 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1265 path = vpath; 1266 do { 1267 /* skip to end of directory */ 1268 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1269 continue; 1270 /* Save terminator character so know when to stop */ 1271 savec = *cp; 1272 *cp = '\0'; 1273 /* Add directory to search path */ 1274 (void)Dir_AddDir(dirSearchPath, path); 1275 *cp = savec; 1276 path = cp + 1; 1277 } while (savec == ':'); 1278 free(vpath); 1279 } 1280 1281 /* 1282 * Now that all search paths have been read for suffixes et al, it's 1283 * time to add the default search path to their lists... 1284 */ 1285 Suff_DoPaths(); 1286 1287 /* 1288 * Propagate attributes through :: dependency lists. 1289 */ 1290 Targ_Propagate(); 1291 1292 /* print the initial graph, if the user requested it */ 1293 if (DEBUG(GRAPH1)) 1294 Targ_PrintGraph(1); 1295 1296 /* print the values of any variables requested by the user */ 1297 if (printVars) { 1298 LstNode ln; 1299 Boolean expandVars; 1300 1301 if (debugVflag) 1302 expandVars = FALSE; 1303 else 1304 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1305 for (ln = Lst_First(variables); ln != NULL; 1306 ln = Lst_Succ(ln)) { 1307 char *var = (char *)Lst_Datum(ln); 1308 char *value; 1309 1310 if (strchr(var, '$')) { 1311 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1312 } else if (expandVars) { 1313 char tmp[128]; 1314 1315 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1316 Fatal("%s: variable name too big: %s", 1317 progname, var); 1318 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1319 } else { 1320 value = Var_Value(var, VAR_GLOBAL, &p1); 1321 } 1322 printf("%s\n", value ? value : ""); 1323 if (p1) 1324 free(p1); 1325 } 1326 } else { 1327 /* 1328 * Have now read the entire graph and need to make a list of 1329 * targets to create. If none was given on the command line, 1330 * we consult the parsing module to find the main target(s) 1331 * to create. 1332 */ 1333 if (Lst_IsEmpty(create)) 1334 targs = Parse_MainName(); 1335 else 1336 targs = Targ_FindList(create, TARG_CREATE); 1337 1338 if (!compatMake) { 1339 /* 1340 * Initialize job module before traversing the graph 1341 * now that any .BEGIN and .END targets have been read. 1342 * This is done only if the -q flag wasn't given 1343 * (to prevent the .BEGIN from being executed should 1344 * it exist). 1345 */ 1346 if (!queryFlag) { 1347 Job_Init(); 1348 jobsRunning = TRUE; 1349 } 1350 1351 /* Traverse the graph, checking on all the targets */ 1352 outOfDate = Make_Run(targs); 1353 } else { 1354 /* 1355 * Compat_Init will take care of creating all the 1356 * targets as well as initializing the module. 1357 */ 1358 Compat_Run(targs); 1359 } 1360 } 1361 1362 #ifdef CLEANUP 1363 Lst_Destroy(targs, NULL); 1364 Lst_Destroy(variables, NULL); 1365 Lst_Destroy(makefiles, NULL); 1366 Lst_Destroy(create, (FreeProc *)free); 1367 #endif 1368 1369 /* print the graph now it's been processed if the user requested it */ 1370 if (DEBUG(GRAPH2)) 1371 Targ_PrintGraph(2); 1372 1373 Trace_Log(MAKEEND, 0); 1374 1375 if (enterFlag) 1376 printf("%s: Leaving directory `%s'\n", progname, curdir); 1377 1378 Suff_End(); 1379 Targ_End(); 1380 Arch_End(); 1381 Var_End(); 1382 Parse_End(); 1383 Dir_End(); 1384 Job_End(); 1385 Trace_End(); 1386 1387 return outOfDate ? 1 : 0; 1388 } 1389 1390 /*- 1391 * ReadMakefile -- 1392 * Open and parse the given makefile. 1393 * 1394 * Results: 1395 * 0 if ok. -1 if couldn't open file. 1396 * 1397 * Side Effects: 1398 * lots 1399 */ 1400 static int 1401 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1402 { 1403 const char *fname = p; /* makefile to read */ 1404 int fd; 1405 size_t len = MAXPATHLEN; 1406 char *name, *path = bmake_malloc(len); 1407 1408 if (!strcmp(fname, "-")) { 1409 Parse_File(NULL /*stdin*/, -1); 1410 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1411 } else { 1412 /* if we've chdir'd, rebuild the path name */ 1413 if (strcmp(curdir, objdir) && *fname != '/') { 1414 size_t plen = strlen(curdir) + strlen(fname) + 2; 1415 if (len < plen) 1416 path = bmake_realloc(path, len = 2 * plen); 1417 1418 (void)snprintf(path, len, "%s/%s", curdir, fname); 1419 fd = open(path, O_RDONLY); 1420 if (fd != -1) { 1421 fname = path; 1422 goto found; 1423 } 1424 1425 /* If curdir failed, try objdir (ala .depend) */ 1426 plen = strlen(objdir) + strlen(fname) + 2; 1427 if (len < plen) 1428 path = bmake_realloc(path, len = 2 * plen); 1429 (void)snprintf(path, len, "%s/%s", objdir, fname); 1430 fd = open(path, O_RDONLY); 1431 if (fd != -1) { 1432 fname = path; 1433 goto found; 1434 } 1435 } else { 1436 fd = open(fname, O_RDONLY); 1437 if (fd != -1) 1438 goto found; 1439 } 1440 /* look in -I and system include directories. */ 1441 name = Dir_FindFile(fname, parseIncPath); 1442 if (!name) 1443 name = Dir_FindFile(fname, 1444 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1445 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1446 if (name) 1447 free(name); 1448 free(path); 1449 return(-1); 1450 } 1451 fname = name; 1452 /* 1453 * set the MAKEFILE variable desired by System V fans -- the 1454 * placement of the setting here means it gets set to the last 1455 * makefile specified, as it is set by SysV make. 1456 */ 1457 found: 1458 if (!doing_depend) 1459 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1460 Parse_File(fname, fd); 1461 } 1462 free(path); 1463 return(0); 1464 } 1465 1466 1467 1468 /*- 1469 * Cmd_Exec -- 1470 * Execute the command in cmd, and return the output of that command 1471 * in a string. 1472 * 1473 * Results: 1474 * A string containing the output of the command, or the empty string 1475 * If errnum is not NULL, it contains the reason for the command failure 1476 * 1477 * Side Effects: 1478 * The string must be freed by the caller. 1479 */ 1480 char * 1481 Cmd_Exec(const char *cmd, const char **errnum) 1482 { 1483 const char *args[4]; /* Args for invoking the shell */ 1484 int fds[2]; /* Pipe streams */ 1485 int cpid; /* Child PID */ 1486 int pid; /* PID from wait() */ 1487 char *res; /* result */ 1488 int status; /* command exit status */ 1489 Buffer buf; /* buffer to store the result */ 1490 char *cp; 1491 int cc; /* bytes read, or -1 */ 1492 int savederr; /* saved errno */ 1493 1494 1495 *errnum = NULL; 1496 1497 if (!shellName) 1498 Shell_Init(); 1499 /* 1500 * Set up arguments for shell 1501 */ 1502 args[0] = shellName; 1503 args[1] = "-c"; 1504 args[2] = cmd; 1505 args[3] = NULL; 1506 1507 /* 1508 * Open a pipe for fetching its output 1509 */ 1510 if (pipe(fds) == -1) { 1511 *errnum = "Couldn't create pipe for \"%s\""; 1512 goto bad; 1513 } 1514 1515 /* 1516 * Fork 1517 */ 1518 switch (cpid = vFork()) { 1519 case 0: 1520 /* 1521 * Close input side of pipe 1522 */ 1523 (void)close(fds[0]); 1524 1525 /* 1526 * Duplicate the output stream to the shell's output, then 1527 * shut the extra thing down. Note we don't fetch the error 1528 * stream...why not? Why? 1529 */ 1530 (void)dup2(fds[1], 1); 1531 (void)close(fds[1]); 1532 1533 Var_ExportVars(); 1534 1535 (void)execv(shellPath, UNCONST(args)); 1536 _exit(1); 1537 /*NOTREACHED*/ 1538 1539 case -1: 1540 *errnum = "Couldn't exec \"%s\""; 1541 goto bad; 1542 1543 default: 1544 /* 1545 * No need for the writing half 1546 */ 1547 (void)close(fds[1]); 1548 1549 savederr = 0; 1550 Buf_Init(&buf, 0); 1551 1552 do { 1553 char result[BUFSIZ]; 1554 cc = read(fds[0], result, sizeof(result)); 1555 if (cc > 0) 1556 Buf_AddBytes(&buf, cc, result); 1557 } 1558 while (cc > 0 || (cc == -1 && errno == EINTR)); 1559 if (cc == -1) 1560 savederr = errno; 1561 1562 /* 1563 * Close the input side of the pipe. 1564 */ 1565 (void)close(fds[0]); 1566 1567 /* 1568 * Wait for the process to exit. 1569 */ 1570 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1571 JobReapChild(pid, status, FALSE); 1572 continue; 1573 } 1574 cc = Buf_Size(&buf); 1575 res = Buf_Destroy(&buf, FALSE); 1576 1577 if (savederr != 0) 1578 *errnum = "Couldn't read shell's output for \"%s\""; 1579 1580 if (WIFSIGNALED(status)) 1581 *errnum = "\"%s\" exited on a signal"; 1582 else if (WEXITSTATUS(status) != 0) 1583 *errnum = "\"%s\" returned non-zero status"; 1584 1585 /* 1586 * Null-terminate the result, convert newlines to spaces and 1587 * install it in the variable. 1588 */ 1589 res[cc] = '\0'; 1590 cp = &res[cc]; 1591 1592 if (cc > 0 && *--cp == '\n') { 1593 /* 1594 * A final newline is just stripped 1595 */ 1596 *cp-- = '\0'; 1597 } 1598 while (cp >= res) { 1599 if (*cp == '\n') { 1600 *cp = ' '; 1601 } 1602 cp--; 1603 } 1604 break; 1605 } 1606 return res; 1607 bad: 1608 res = bmake_malloc(1); 1609 *res = '\0'; 1610 return res; 1611 } 1612 1613 /*- 1614 * Error -- 1615 * Print an error message given its format. 1616 * 1617 * Results: 1618 * None. 1619 * 1620 * Side Effects: 1621 * The message is printed. 1622 */ 1623 /* VARARGS */ 1624 void 1625 Error(const char *fmt, ...) 1626 { 1627 va_list ap; 1628 FILE *err_file; 1629 1630 err_file = debug_file; 1631 if (err_file == stdout) 1632 err_file = stderr; 1633 (void)fflush(stdout); 1634 for (;;) { 1635 va_start(ap, fmt); 1636 fprintf(err_file, "%s: ", progname); 1637 (void)vfprintf(err_file, fmt, ap); 1638 va_end(ap); 1639 (void)fprintf(err_file, "\n"); 1640 (void)fflush(err_file); 1641 if (err_file == stderr) 1642 break; 1643 err_file = stderr; 1644 } 1645 } 1646 1647 /*- 1648 * Fatal -- 1649 * Produce a Fatal error message. If jobs are running, waits for them 1650 * to finish. 1651 * 1652 * Results: 1653 * None 1654 * 1655 * Side Effects: 1656 * The program exits 1657 */ 1658 /* VARARGS */ 1659 void 1660 Fatal(const char *fmt, ...) 1661 { 1662 va_list ap; 1663 1664 va_start(ap, fmt); 1665 if (jobsRunning) 1666 Job_Wait(); 1667 1668 (void)fflush(stdout); 1669 (void)vfprintf(stderr, fmt, ap); 1670 va_end(ap); 1671 (void)fprintf(stderr, "\n"); 1672 (void)fflush(stderr); 1673 1674 PrintOnError(NULL, NULL); 1675 1676 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1677 Targ_PrintGraph(2); 1678 Trace_Log(MAKEERROR, 0); 1679 exit(2); /* Not 1 so -q can distinguish error */ 1680 } 1681 1682 /* 1683 * Punt -- 1684 * Major exception once jobs are being created. Kills all jobs, prints 1685 * a message and exits. 1686 * 1687 * Results: 1688 * None 1689 * 1690 * Side Effects: 1691 * All children are killed indiscriminately and the program Lib_Exits 1692 */ 1693 /* VARARGS */ 1694 void 1695 Punt(const char *fmt, ...) 1696 { 1697 va_list ap; 1698 1699 va_start(ap, fmt); 1700 (void)fflush(stdout); 1701 (void)fprintf(stderr, "%s: ", progname); 1702 (void)vfprintf(stderr, fmt, ap); 1703 va_end(ap); 1704 (void)fprintf(stderr, "\n"); 1705 (void)fflush(stderr); 1706 1707 PrintOnError(NULL, NULL); 1708 1709 DieHorribly(); 1710 } 1711 1712 /*- 1713 * DieHorribly -- 1714 * Exit without giving a message. 1715 * 1716 * Results: 1717 * None 1718 * 1719 * Side Effects: 1720 * A big one... 1721 */ 1722 void 1723 DieHorribly(void) 1724 { 1725 if (jobsRunning) 1726 Job_AbortAll(); 1727 if (DEBUG(GRAPH2)) 1728 Targ_PrintGraph(2); 1729 Trace_Log(MAKEERROR, 0); 1730 exit(2); /* Not 1, so -q can distinguish error */ 1731 } 1732 1733 /* 1734 * Finish -- 1735 * Called when aborting due to errors in child shell to signal 1736 * abnormal exit. 1737 * 1738 * Results: 1739 * None 1740 * 1741 * Side Effects: 1742 * The program exits 1743 */ 1744 void 1745 Finish(int errors) 1746 /* number of errors encountered in Make_Make */ 1747 { 1748 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1749 } 1750 1751 /* 1752 * eunlink -- 1753 * Remove a file carefully, avoiding directories. 1754 */ 1755 int 1756 eunlink(const char *file) 1757 { 1758 struct stat st; 1759 1760 if (lstat(file, &st) == -1) 1761 return -1; 1762 1763 if (S_ISDIR(st.st_mode)) { 1764 errno = EISDIR; 1765 return -1; 1766 } 1767 return unlink(file); 1768 } 1769 1770 /* 1771 * execError -- 1772 * Print why exec failed, avoiding stdio. 1773 */ 1774 void 1775 execError(const char *af, const char *av) 1776 { 1777 #ifdef USE_IOVEC 1778 int i = 0; 1779 struct iovec iov[8]; 1780 #define IOADD(s) \ 1781 (void)(iov[i].iov_base = UNCONST(s), \ 1782 iov[i].iov_len = strlen(iov[i].iov_base), \ 1783 i++) 1784 #else 1785 #define IOADD(void)write(2, s, strlen(s)) 1786 #endif 1787 1788 IOADD(progname); 1789 IOADD(": "); 1790 IOADD(af); 1791 IOADD("("); 1792 IOADD(av); 1793 IOADD(") failed ("); 1794 IOADD(strerror(errno)); 1795 IOADD(")\n"); 1796 1797 #ifdef USE_IOVEC 1798 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1799 continue; 1800 #endif 1801 } 1802 1803 /* 1804 * usage -- 1805 * exit with usage message 1806 */ 1807 static void 1808 usage(void) 1809 { 1810 char *p; 1811 if ((p = strchr(progname, '[')) != NULL) 1812 *p = '\0'; 1813 1814 (void)fprintf(stderr, 1815 "usage: %s [-BeikNnqrstWwX] \n\ 1816 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1817 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1818 [-V variable] [variable=value] [target ...]\n", progname); 1819 exit(2); 1820 } 1821 1822 1823 int 1824 PrintAddr(void *a, void *b) 1825 { 1826 printf("%lx ", (unsigned long) a); 1827 return b ? 0 : 0; 1828 } 1829 1830 1831 1832 void 1833 PrintOnError(GNode *gn, const char *s) 1834 { 1835 static GNode *en = NULL; 1836 char tmp[64]; 1837 char *cp; 1838 1839 if (s) 1840 printf("%s", s); 1841 1842 printf("\n%s: stopped in %s\n", progname, curdir); 1843 1844 if (en) 1845 return; /* we've been here! */ 1846 if (gn) { 1847 /* 1848 * We can print this even if there is no .ERROR target. 1849 */ 1850 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1851 } 1852 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1853 sizeof(tmp) - 1); 1854 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1855 if (cp) { 1856 if (*cp) 1857 printf("%s", cp); 1858 free(cp); 1859 } 1860 /* 1861 * Finally, see if there is a .ERROR target, and run it if so. 1862 */ 1863 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1864 if (en) { 1865 en->type |= OP_SPECIAL; 1866 Compat_Make(en, en); 1867 } 1868 } 1869 1870 void 1871 Main_ExportMAKEFLAGS(Boolean first) 1872 { 1873 static int once = 1; 1874 char tmp[64]; 1875 char *s; 1876 1877 if (once != first) 1878 return; 1879 once = 0; 1880 1881 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1882 sizeof(tmp)); 1883 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1884 if (s && *s) { 1885 #ifdef POSIX 1886 setenv("MAKEFLAGS", s, 1); 1887 #else 1888 setenv("MAKE", s, 1); 1889 #endif 1890 } 1891 } 1892 1893 char * 1894 getTmpdir(void) 1895 { 1896 static char *tmpdir = NULL; 1897 1898 if (!tmpdir) { 1899 struct stat st; 1900 1901 /* 1902 * Honor $TMPDIR but only if it is valid. 1903 * Ensure it ends with /. 1904 */ 1905 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1906 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1907 free(tmpdir); 1908 tmpdir = bmake_strdup(_PATH_TMP); 1909 } 1910 } 1911 return tmpdir; 1912 } 1913 1914 /* 1915 * Create and open a temp file using "pattern". 1916 * If "fnamep" is provided set it to a copy of the filename created. 1917 * Otherwise unlink the file once open. 1918 */ 1919 int 1920 mkTempFile(const char *pattern, char **fnamep) 1921 { 1922 static char *tmpdir = NULL; 1923 char tfile[MAXPATHLEN]; 1924 int fd; 1925 1926 if (!pattern) 1927 pattern = TMPPAT; 1928 if (!tmpdir) 1929 tmpdir = getTmpdir(); 1930 if (pattern[0] == '/') { 1931 snprintf(tfile, sizeof(tfile), "%s", pattern); 1932 } else { 1933 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1934 } 1935 if ((fd = mkstemp(tfile)) < 0) 1936 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1937 if (fnamep) { 1938 *fnamep = bmake_strdup(tfile); 1939 } else { 1940 unlink(tfile); /* we just want the descriptor */ 1941 } 1942 return fd; 1943 } 1944 1945 1946 /* 1947 * Return a Boolean based on setting of a knob. 1948 * 1949 * If the knob is not set, the supplied default is the return value. 1950 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1951 * is FALSE, otherwise TRUE. 1952 */ 1953 Boolean 1954 getBoolean(const char *name, Boolean bf) 1955 { 1956 char tmp[64]; 1957 char *cp; 1958 1959 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1960 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1961 1962 if (cp) { 1963 switch(*cp) { 1964 case '\0': /* not set - the default wins */ 1965 break; 1966 case '0': 1967 case 'f': 1968 case 'n': 1969 bf = FALSE; 1970 break; 1971 case 'o': 1972 switch (cp[1]) { 1973 case 'f': 1974 bf = FALSE; 1975 break; 1976 default: 1977 bf = TRUE; 1978 break; 1979 } 1980 break; 1981 default: 1982 bf = TRUE; 1983 break; 1984 } 1985 free(cp); 1986 } 1987 } 1988 return (bf); 1989 } 1990
Indexes created Mon Sep 22 13:09:51 GMT 2025