main.c revision 1.240
1 /* $NetBSD: main.c,v 1.240 2016/02/18 20:25:08 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 1.240 2016/02/18 20:25:08 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 1.240 2016/02/18 20:25:08 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 <signal.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 #include <ctype.h> 134 135 #include "make.h" 136 #include "hash.h" 137 #include "dir.h" 138 #include "job.h" 139 #include "pathnames.h" 140 #include "trace.h" 141 142 #ifdef USE_IOVEC 143 #include <sys/uio.h> 144 #endif 145 146 #ifndef DEFMAXLOCAL 147 #define DEFMAXLOCAL DEFMAXJOBS 148 #endif /* DEFMAXLOCAL */ 149 150 Lst create; /* Targets to be made */ 151 time_t now; /* Time at start of make */ 152 GNode *DEFAULT; /* .DEFAULT node */ 153 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 154 155 static Boolean noBuiltins; /* -r flag */ 156 static Lst makefiles; /* ordered list of makefiles to read */ 157 static Boolean printVars; /* print value of one or more vars */ 158 static Lst variables; /* list of variables to print */ 159 int maxJobs; /* -j argument */ 160 static int maxJobTokens; /* -j argument */ 161 Boolean compatMake; /* -B argument */ 162 int debug; /* -d argument */ 163 Boolean debugVflag; /* -dV */ 164 Boolean noExecute; /* -n flag */ 165 Boolean noRecursiveExecute; /* -N flag */ 166 Boolean keepgoing; /* -k flag */ 167 Boolean queryFlag; /* -q flag */ 168 Boolean touchFlag; /* -t flag */ 169 Boolean enterFlag; /* -w flag */ 170 Boolean enterFlagObj; /* -w and objdir != srcdir */ 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 free(p1); 668 669 argv = brk_string(buf, &argc, TRUE, &args); 670 if (argv == NULL) { 671 Error("Unterminated quoted string [%s]", buf); 672 free(buf); 673 return; 674 } 675 free(buf); 676 MainParseArgs(argc, argv); 677 678 free(args); 679 free(argv); 680 } 681 682 Boolean 683 Main_SetObjdir(const char *path) 684 { 685 struct stat sb; 686 char *p = NULL; 687 char buf[MAXPATHLEN + 1]; 688 Boolean rc = FALSE; 689 690 /* expand variable substitutions */ 691 if (strchr(path, '$') != 0) { 692 snprintf(buf, MAXPATHLEN, "%s", path); 693 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, VARF_WANTRES); 694 } 695 696 if (path[0] != '/') { 697 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 698 path = buf; 699 } 700 701 /* look for the directory and try to chdir there */ 702 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 703 if (chdir(path)) { 704 (void)fprintf(stderr, "make warning: %s: %s.\n", 705 path, strerror(errno)); 706 } else { 707 strncpy(objdir, path, MAXPATHLEN); 708 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 709 setenv("PWD", objdir, 1); 710 Dir_InitDot(); 711 rc = TRUE; 712 if (enterFlag && strcmp(objdir, curdir) != 0) 713 enterFlagObj = TRUE; 714 } 715 } 716 717 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}", 776 VAR_GLOBAL, VARF_WANTRES); 777 778 if (mode && *mode) { 779 if (strstr(mode, "compat")) { 780 compatMake = TRUE; 781 forceJobs = FALSE; 782 } 783 #if USE_META 784 if (strstr(mode, "meta")) 785 meta_mode_init(mode); 786 #endif 787 } 788 789 free(mp); 790 } 791 792 /*- 793 * main -- 794 * The main function, for obvious reasons. Initializes variables 795 * and a few modules, then parses the arguments give it in the 796 * environment and on the command line. Reads the system makefile 797 * followed by either Makefile, makefile or the file given by the 798 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 799 * flags it has received by then uses either the Make or the Compat 800 * module to create the initial list of targets. 801 * 802 * Results: 803 * If -q was given, exits -1 if anything was out-of-date. Else it exits 804 * 0. 805 * 806 * Side Effects: 807 * The program exits when done. Targets are created. etc. etc. etc. 808 */ 809 int 810 main(int argc, char **argv) 811 { 812 Lst targs; /* target nodes to create -- passed to Make_Init */ 813 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 814 struct stat sb, sa; 815 char *p1, *path; 816 char mdpath[MAXPATHLEN]; 817 const char *machine = getenv("MACHINE"); 818 const char *machine_arch = getenv("MACHINE_ARCH"); 819 char *syspath = getenv("MAKESYSPATH"); 820 Lst sysMkPath; /* Path of sys.mk */ 821 char *cp = NULL, *start; 822 /* avoid faults on read-only strings */ 823 static char defsyspath[] = _PATH_DEFSYSPATH; 824 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 825 struct timeval rightnow; /* to initialize random seed */ 826 struct utsname utsname; 827 828 /* default to writing debug to stderr */ 829 debug_file = stderr; 830 831 #ifdef SIGINFO 832 (void)bmake_signal(SIGINFO, siginfo); 833 #endif 834 /* 835 * Set the seed to produce a different random sequence 836 * on each program execution. 837 */ 838 gettimeofday(&rightnow, NULL); 839 srandom(rightnow.tv_sec + rightnow.tv_usec); 840 841 if ((progname = strrchr(argv[0], '/')) != NULL) 842 progname++; 843 else 844 progname = argv[0]; 845 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 846 /* 847 * get rid of resource limit on file descriptors 848 */ 849 { 850 struct rlimit rl; 851 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 852 rl.rlim_cur != rl.rlim_max) { 853 rl.rlim_cur = rl.rlim_max; 854 (void)setrlimit(RLIMIT_NOFILE, &rl); 855 } 856 } 857 #endif 858 859 if (uname(&utsname) == -1) { 860 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 861 strerror(errno)); 862 exit(2); 863 } 864 865 /* 866 * Get the name of this type of MACHINE from utsname 867 * so we can share an executable for similar machines. 868 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 869 * 870 * Note that both MACHINE and MACHINE_ARCH are decided at 871 * run-time. 872 */ 873 if (!machine) { 874 #ifdef MAKE_NATIVE 875 machine = utsname.machine; 876 #else 877 #ifdef MAKE_MACHINE 878 machine = MAKE_MACHINE; 879 #else 880 machine = "unknown"; 881 #endif 882 #endif 883 } 884 885 if (!machine_arch) { 886 #ifdef MAKE_NATIVE 887 static char machine_arch_buf[sizeof(utsname.machine)]; 888 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 889 size_t len = sizeof(machine_arch_buf); 890 891 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 892 &len, NULL, 0) < 0) { 893 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 894 strerror(errno)); 895 exit(2); 896 } 897 898 machine_arch = machine_arch_buf; 899 #else 900 #ifndef MACHINE_ARCH 901 #ifdef MAKE_MACHINE_ARCH 902 machine_arch = MAKE_MACHINE_ARCH; 903 #else 904 machine_arch = "unknown"; 905 #endif 906 #else 907 machine_arch = MACHINE_ARCH; 908 #endif 909 #endif 910 } 911 912 myPid = getpid(); /* remember this for vFork() */ 913 914 /* 915 * Just in case MAKEOBJDIR wants us to do something tricky. 916 */ 917 Var_Init(); /* Initialize the lists of variables for 918 * parsing arguments */ 919 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 920 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 921 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 922 #ifdef MAKE_VERSION 923 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 924 #endif 925 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 926 /* 927 * This is the traditional preference for makefiles. 928 */ 929 #ifndef MAKEFILE_PREFERENCE_LIST 930 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 931 #endif 932 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 933 VAR_GLOBAL, 0); 934 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 935 936 create = Lst_Init(FALSE); 937 makefiles = Lst_Init(FALSE); 938 printVars = FALSE; 939 debugVflag = FALSE; 940 variables = Lst_Init(FALSE); 941 beSilent = FALSE; /* Print commands as executed */ 942 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 943 noExecute = FALSE; /* Execute all commands */ 944 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 945 keepgoing = FALSE; /* Stop on error */ 946 allPrecious = FALSE; /* Remove targets when interrupted */ 947 queryFlag = FALSE; /* This is not just a check-run */ 948 noBuiltins = FALSE; /* Read the built-in rules */ 949 touchFlag = FALSE; /* Actually update targets */ 950 debug = 0; /* No debug verbosity, please. */ 951 jobsRunning = FALSE; 952 953 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 954 maxJobTokens = maxJobs; 955 compatMake = FALSE; /* No compat mode */ 956 ignorePWD = FALSE; 957 958 /* 959 * Initialize the parsing, directory and variable modules to prepare 960 * for the reading of inclusion paths and variable settings on the 961 * command line 962 */ 963 964 /* 965 * Initialize various variables. 966 * MAKE also gets this name, for compatibility 967 * .MAKEFLAGS gets set to the empty string just in case. 968 * MFLAGS also gets initialized empty, for compatibility. 969 */ 970 Parse_Init(); 971 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 972 /* 973 * Leave alone if it is an absolute path, or if it does 974 * not contain a '/' in which case we need to find it in 975 * the path, like execvp(3) and the shells do. 976 */ 977 p1 = argv[0]; 978 } else { 979 /* 980 * A relative path, canonicalize it. 981 */ 982 p1 = realpath(argv[0], mdpath); 983 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 984 p1 = argv[0]; /* realpath failed */ 985 } 986 } 987 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 988 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 989 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 990 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 991 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 992 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 993 /* some makefiles need to know this */ 994 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 995 996 /* 997 * Set some other useful macros 998 */ 999 { 1000 char tmp[64], *ep; 1001 1002 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1003 if (makelevel < 0) 1004 makelevel = 0; 1005 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1006 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1007 snprintf(tmp, sizeof(tmp), "%u", myPid); 1008 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1009 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1010 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1011 } 1012 if (makelevel > 0) { 1013 char pn[1024]; 1014 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1015 progname = bmake_strdup(pn); 1016 } 1017 1018 #ifdef USE_META 1019 meta_init(); 1020 #endif 1021 /* 1022 * First snag any flags out of the MAKE environment variable. 1023 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1024 * in a different format). 1025 */ 1026 #ifdef POSIX 1027 p1 = explode(getenv("MAKEFLAGS")); 1028 Main_ParseArgLine(p1); 1029 free(p1); 1030 #else 1031 Main_ParseArgLine(getenv("MAKE")); 1032 #endif 1033 1034 /* 1035 * Find where we are (now). 1036 * We take care of PWD for the automounter below... 1037 */ 1038 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1039 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1040 progname, strerror(errno)); 1041 exit(2); 1042 } 1043 1044 MainParseArgs(argc, argv); 1045 1046 if (enterFlag) 1047 printf("%s: Entering directory `%s'\n", progname, curdir); 1048 1049 /* 1050 * Verify that cwd is sane. 1051 */ 1052 if (stat(curdir, &sa) == -1) { 1053 (void)fprintf(stderr, "%s: %s: %s.\n", 1054 progname, curdir, strerror(errno)); 1055 exit(2); 1056 } 1057 1058 /* 1059 * All this code is so that we know where we are when we start up 1060 * on a different machine with pmake. 1061 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1062 * since the value of curdir can vary depending on how we got 1063 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1064 * or via subdir.mk in which case its likely a shell which does 1065 * not provide it. 1066 * So, to stop it breaking this case only, we ignore PWD if 1067 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1068 */ 1069 #ifndef NO_PWD_OVERRIDE 1070 if (!ignorePWD) { 1071 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1072 1073 if ((pwd = getenv("PWD")) != NULL && 1074 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1075 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1076 VAR_CMD, &ptmp2); 1077 1078 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1079 if (stat(pwd, &sb) == 0 && 1080 sa.st_ino == sb.st_ino && 1081 sa.st_dev == sb.st_dev) 1082 (void)strncpy(curdir, pwd, MAXPATHLEN); 1083 } 1084 } 1085 free(ptmp1); 1086 free(ptmp2); 1087 } 1088 #endif 1089 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1090 1091 /* 1092 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1093 * MAKEOBJDIR is set in the environment, try only that value 1094 * and fall back to .CURDIR if it does not exist. 1095 * 1096 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1097 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1098 * of these paths exist, just use .CURDIR. 1099 */ 1100 Dir_Init(curdir); 1101 (void)Main_SetObjdir(curdir); 1102 1103 if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) { 1104 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1105 (void)Main_SetObjdir(mdpath); 1106 free(p1); 1107 } else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) { 1108 (void)Main_SetObjdir(path); 1109 free(p1); 1110 } else { 1111 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1112 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1113 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1114 _PATH_OBJDIRPREFIX, curdir); 1115 (void)Main_SetObjdir(mdpath); 1116 } 1117 } 1118 1119 /* 1120 * Be compatible if user did not specify -j and did not explicitly 1121 * turned compatibility on 1122 */ 1123 if (!compatMake && !forceJobs) { 1124 compatMake = TRUE; 1125 } 1126 1127 /* 1128 * Initialize archive, target and suffix modules in preparation for 1129 * parsing the makefile(s) 1130 */ 1131 Arch_Init(); 1132 Targ_Init(); 1133 Suff_Init(); 1134 Trace_Init(tracefile); 1135 1136 DEFAULT = NULL; 1137 (void)time(&now); 1138 1139 Trace_Log(MAKESTART, NULL); 1140 1141 /* 1142 * Set up the .TARGETS variable to contain the list of targets to be 1143 * created. If none specified, make the variable empty -- the parser 1144 * will fill the thing in with the default or .MAIN target. 1145 */ 1146 if (!Lst_IsEmpty(create)) { 1147 LstNode ln; 1148 1149 for (ln = Lst_First(create); ln != NULL; 1150 ln = Lst_Succ(ln)) { 1151 char *name = (char *)Lst_Datum(ln); 1152 1153 Var_Append(".TARGETS", name, VAR_GLOBAL); 1154 } 1155 } else 1156 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1157 1158 1159 /* 1160 * If no user-supplied system path was given (through the -m option) 1161 * add the directories from the DEFSYSPATH (more than one may be given 1162 * as dir1:...:dirn) to the system include path. 1163 */ 1164 if (syspath == NULL || *syspath == '\0') 1165 syspath = defsyspath; 1166 else 1167 syspath = bmake_strdup(syspath); 1168 1169 for (start = syspath; *start != '\0'; start = cp) { 1170 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1171 continue; 1172 if (*cp == ':') { 1173 *cp++ = '\0'; 1174 } 1175 /* look for magic parent directory search string */ 1176 if (strncmp(".../", start, 4) != 0) { 1177 (void)Dir_AddDir(defIncPath, start); 1178 } else { 1179 if (Dir_FindHereOrAbove(curdir, start+4, 1180 found_path, sizeof(found_path))) { 1181 (void)Dir_AddDir(defIncPath, found_path); 1182 } 1183 } 1184 } 1185 if (syspath != defsyspath) 1186 free(syspath); 1187 1188 /* 1189 * Read in the built-in rules first, followed by the specified 1190 * makefile, if it was (makefile != NULL), or the default 1191 * makefile and Makefile, in that order, if it wasn't. 1192 */ 1193 if (!noBuiltins) { 1194 LstNode ln; 1195 1196 sysMkPath = Lst_Init(FALSE); 1197 Dir_Expand(_PATH_DEFSYSMK, 1198 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1199 sysMkPath); 1200 if (Lst_IsEmpty(sysMkPath)) 1201 Fatal("%s: no system rules (%s).", progname, 1202 _PATH_DEFSYSMK); 1203 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1204 if (ln == NULL) 1205 Fatal("%s: cannot open %s.", progname, 1206 (char *)Lst_Datum(ln)); 1207 } 1208 1209 if (!Lst_IsEmpty(makefiles)) { 1210 LstNode ln; 1211 1212 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1213 if (ln != NULL) 1214 Fatal("%s: cannot open %s.", progname, 1215 (char *)Lst_Datum(ln)); 1216 } else { 1217 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1218 VAR_CMD, VARF_WANTRES); 1219 if (p1) { 1220 (void)str2Lst_Append(makefiles, p1, NULL); 1221 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1222 free(p1); 1223 } 1224 } 1225 1226 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1227 if (!noBuiltins || !printVars) { 1228 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1229 VAR_CMD, VARF_WANTRES); 1230 doing_depend = TRUE; 1231 (void)ReadMakefile(makeDependfile, NULL); 1232 doing_depend = FALSE; 1233 } 1234 1235 if (enterFlagObj) 1236 printf("%s: Entering directory `%s'\n", progname, objdir); 1237 1238 MakeMode(NULL); 1239 1240 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1241 free(p1); 1242 1243 if (!compatMake) 1244 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1245 if (DEBUG(JOB)) 1246 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1247 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1248 1249 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1250 1251 1252 /* 1253 * For compatibility, look at the directories in the VPATH variable 1254 * and add them to the search path, if the variable is defined. The 1255 * variable's value is in the same format as the PATH envariable, i.e. 1256 * <directory>:<directory>:<directory>... 1257 */ 1258 if (Var_Exists("VPATH", VAR_CMD)) { 1259 char *vpath, savec; 1260 /* 1261 * GCC stores string constants in read-only memory, but 1262 * Var_Subst will want to write this thing, so store it 1263 * in an array 1264 */ 1265 static char VPATH[] = "${VPATH}"; 1266 1267 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1268 path = vpath; 1269 do { 1270 /* skip to end of directory */ 1271 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1272 continue; 1273 /* Save terminator character so know when to stop */ 1274 savec = *cp; 1275 *cp = '\0'; 1276 /* Add directory to search path */ 1277 (void)Dir_AddDir(dirSearchPath, path); 1278 *cp = savec; 1279 path = cp + 1; 1280 } while (savec == ':'); 1281 free(vpath); 1282 } 1283 1284 /* 1285 * Now that all search paths have been read for suffixes et al, it's 1286 * time to add the default search path to their lists... 1287 */ 1288 Suff_DoPaths(); 1289 1290 /* 1291 * Propagate attributes through :: dependency lists. 1292 */ 1293 Targ_Propagate(); 1294 1295 /* print the initial graph, if the user requested it */ 1296 if (DEBUG(GRAPH1)) 1297 Targ_PrintGraph(1); 1298 1299 /* print the values of any variables requested by the user */ 1300 if (printVars) { 1301 LstNode ln; 1302 Boolean expandVars; 1303 1304 if (debugVflag) 1305 expandVars = FALSE; 1306 else 1307 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1308 for (ln = Lst_First(variables); ln != NULL; 1309 ln = Lst_Succ(ln)) { 1310 char *var = (char *)Lst_Datum(ln); 1311 char *value; 1312 1313 if (strchr(var, '$')) { 1314 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1315 VARF_WANTRES); 1316 } else if (expandVars) { 1317 char tmp[128]; 1318 1319 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1320 Fatal("%s: variable name too big: %s", 1321 progname, var); 1322 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1323 VARF_WANTRES); 1324 } else { 1325 value = Var_Value(var, VAR_GLOBAL, &p1); 1326 } 1327 printf("%s\n", value ? value : ""); 1328 free(p1); 1329 } 1330 } else { 1331 /* 1332 * Have now read the entire graph and need to make a list of 1333 * targets to create. If none was given on the command line, 1334 * we consult the parsing module to find the main target(s) 1335 * to create. 1336 */ 1337 if (Lst_IsEmpty(create)) 1338 targs = Parse_MainName(); 1339 else 1340 targs = Targ_FindList(create, TARG_CREATE); 1341 1342 if (!compatMake) { 1343 /* 1344 * Initialize job module before traversing the graph 1345 * now that any .BEGIN and .END targets have been read. 1346 * This is done only if the -q flag wasn't given 1347 * (to prevent the .BEGIN from being executed should 1348 * it exist). 1349 */ 1350 if (!queryFlag) { 1351 Job_Init(); 1352 jobsRunning = TRUE; 1353 } 1354 1355 /* Traverse the graph, checking on all the targets */ 1356 outOfDate = Make_Run(targs); 1357 } else { 1358 /* 1359 * Compat_Init will take care of creating all the 1360 * targets as well as initializing the module. 1361 */ 1362 Compat_Run(targs); 1363 } 1364 } 1365 1366 #ifdef CLEANUP 1367 Lst_Destroy(targs, NULL); 1368 Lst_Destroy(variables, NULL); 1369 Lst_Destroy(makefiles, NULL); 1370 Lst_Destroy(create, (FreeProc *)free); 1371 #endif 1372 1373 /* print the graph now it's been processed if the user requested it */ 1374 if (DEBUG(GRAPH2)) 1375 Targ_PrintGraph(2); 1376 1377 Trace_Log(MAKEEND, 0); 1378 1379 if (enterFlagObj) 1380 printf("%s: Leaving directory `%s'\n", progname, objdir); 1381 if (enterFlag) 1382 printf("%s: Leaving directory `%s'\n", progname, curdir); 1383 1384 Suff_End(); 1385 Targ_End(); 1386 Arch_End(); 1387 Var_End(); 1388 Parse_End(); 1389 Dir_End(); 1390 Job_End(); 1391 Trace_End(); 1392 1393 return outOfDate ? 1 : 0; 1394 } 1395 1396 /*- 1397 * ReadMakefile -- 1398 * Open and parse the given makefile. 1399 * 1400 * Results: 1401 * 0 if ok. -1 if couldn't open file. 1402 * 1403 * Side Effects: 1404 * lots 1405 */ 1406 static int 1407 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1408 { 1409 const char *fname = p; /* makefile to read */ 1410 int fd; 1411 size_t len = MAXPATHLEN; 1412 char *name, *path = bmake_malloc(len); 1413 1414 if (!strcmp(fname, "-")) { 1415 Parse_File(NULL /*stdin*/, -1); 1416 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1417 } else { 1418 /* if we've chdir'd, rebuild the path name */ 1419 if (strcmp(curdir, objdir) && *fname != '/') { 1420 size_t plen = strlen(curdir) + strlen(fname) + 2; 1421 if (len < plen) 1422 path = bmake_realloc(path, len = 2 * plen); 1423 1424 (void)snprintf(path, len, "%s/%s", curdir, fname); 1425 fd = open(path, O_RDONLY); 1426 if (fd != -1) { 1427 fname = path; 1428 goto found; 1429 } 1430 1431 /* If curdir failed, try objdir (ala .depend) */ 1432 plen = strlen(objdir) + strlen(fname) + 2; 1433 if (len < plen) 1434 path = bmake_realloc(path, len = 2 * plen); 1435 (void)snprintf(path, len, "%s/%s", objdir, fname); 1436 fd = open(path, O_RDONLY); 1437 if (fd != -1) { 1438 fname = path; 1439 goto found; 1440 } 1441 } else { 1442 fd = open(fname, O_RDONLY); 1443 if (fd != -1) 1444 goto found; 1445 } 1446 /* look in -I and system include directories. */ 1447 name = Dir_FindFile(fname, parseIncPath); 1448 if (!name) 1449 name = Dir_FindFile(fname, 1450 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1451 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1452 free(name); 1453 free(path); 1454 return(-1); 1455 } 1456 fname = name; 1457 /* 1458 * set the MAKEFILE variable desired by System V fans -- the 1459 * placement of the setting here means it gets set to the last 1460 * makefile specified, as it is set by SysV make. 1461 */ 1462 found: 1463 if (!doing_depend) 1464 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1465 Parse_File(fname, fd); 1466 } 1467 free(path); 1468 return(0); 1469 } 1470 1471 1472 1473 /*- 1474 * Cmd_Exec -- 1475 * Execute the command in cmd, and return the output of that command 1476 * in a string. 1477 * 1478 * Results: 1479 * A string containing the output of the command, or the empty string 1480 * If errnum is not NULL, it contains the reason for the command failure 1481 * 1482 * Side Effects: 1483 * The string must be freed by the caller. 1484 */ 1485 char * 1486 Cmd_Exec(const char *cmd, const char **errnum) 1487 { 1488 const char *args[4]; /* Args for invoking the shell */ 1489 int fds[2]; /* Pipe streams */ 1490 int cpid; /* Child PID */ 1491 int pid; /* PID from wait() */ 1492 char *res; /* result */ 1493 int status; /* command exit status */ 1494 Buffer buf; /* buffer to store the result */ 1495 char *cp; 1496 int cc; /* bytes read, or -1 */ 1497 int savederr; /* saved errno */ 1498 1499 1500 *errnum = NULL; 1501 1502 if (!shellName) 1503 Shell_Init(); 1504 /* 1505 * Set up arguments for shell 1506 */ 1507 args[0] = shellName; 1508 args[1] = "-c"; 1509 args[2] = cmd; 1510 args[3] = NULL; 1511 1512 /* 1513 * Open a pipe for fetching its output 1514 */ 1515 if (pipe(fds) == -1) { 1516 *errnum = "Couldn't create pipe for \"%s\""; 1517 goto bad; 1518 } 1519 1520 /* 1521 * Fork 1522 */ 1523 switch (cpid = vFork()) { 1524 case 0: 1525 /* 1526 * Close input side of pipe 1527 */ 1528 (void)close(fds[0]); 1529 1530 /* 1531 * Duplicate the output stream to the shell's output, then 1532 * shut the extra thing down. Note we don't fetch the error 1533 * stream...why not? Why? 1534 */ 1535 (void)dup2(fds[1], 1); 1536 (void)close(fds[1]); 1537 1538 Var_ExportVars(); 1539 1540 (void)execv(shellPath, UNCONST(args)); 1541 _exit(1); 1542 /*NOTREACHED*/ 1543 1544 case -1: 1545 *errnum = "Couldn't exec \"%s\""; 1546 goto bad; 1547 1548 default: 1549 /* 1550 * No need for the writing half 1551 */ 1552 (void)close(fds[1]); 1553 1554 savederr = 0; 1555 Buf_Init(&buf, 0); 1556 1557 do { 1558 char result[BUFSIZ]; 1559 cc = read(fds[0], result, sizeof(result)); 1560 if (cc > 0) 1561 Buf_AddBytes(&buf, cc, result); 1562 } 1563 while (cc > 0 || (cc == -1 && errno == EINTR)); 1564 if (cc == -1) 1565 savederr = errno; 1566 1567 /* 1568 * Close the input side of the pipe. 1569 */ 1570 (void)close(fds[0]); 1571 1572 /* 1573 * Wait for the process to exit. 1574 */ 1575 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1576 JobReapChild(pid, status, FALSE); 1577 continue; 1578 } 1579 cc = Buf_Size(&buf); 1580 res = Buf_Destroy(&buf, FALSE); 1581 1582 if (savederr != 0) 1583 *errnum = "Couldn't read shell's output for \"%s\""; 1584 1585 if (WIFSIGNALED(status)) 1586 *errnum = "\"%s\" exited on a signal"; 1587 else if (WEXITSTATUS(status) != 0) 1588 *errnum = "\"%s\" returned non-zero status"; 1589 1590 /* 1591 * Null-terminate the result, convert newlines to spaces and 1592 * install it in the variable. 1593 */ 1594 res[cc] = '\0'; 1595 cp = &res[cc]; 1596 1597 if (cc > 0 && *--cp == '\n') { 1598 /* 1599 * A final newline is just stripped 1600 */ 1601 *cp-- = '\0'; 1602 } 1603 while (cp >= res) { 1604 if (*cp == '\n') { 1605 *cp = ' '; 1606 } 1607 cp--; 1608 } 1609 break; 1610 } 1611 return res; 1612 bad: 1613 res = bmake_malloc(1); 1614 *res = '\0'; 1615 return res; 1616 } 1617 1618 /*- 1619 * Error -- 1620 * Print an error message given its format. 1621 * 1622 * Results: 1623 * None. 1624 * 1625 * Side Effects: 1626 * The message is printed. 1627 */ 1628 /* VARARGS */ 1629 void 1630 Error(const char *fmt, ...) 1631 { 1632 va_list ap; 1633 FILE *err_file; 1634 1635 err_file = debug_file; 1636 if (err_file == stdout) 1637 err_file = stderr; 1638 (void)fflush(stdout); 1639 for (;;) { 1640 va_start(ap, fmt); 1641 fprintf(err_file, "%s: ", progname); 1642 (void)vfprintf(err_file, fmt, ap); 1643 va_end(ap); 1644 (void)fprintf(err_file, "\n"); 1645 (void)fflush(err_file); 1646 if (err_file == stderr) 1647 break; 1648 err_file = stderr; 1649 } 1650 } 1651 1652 /*- 1653 * Fatal -- 1654 * Produce a Fatal error message. If jobs are running, waits for them 1655 * to finish. 1656 * 1657 * Results: 1658 * None 1659 * 1660 * Side Effects: 1661 * The program exits 1662 */ 1663 /* VARARGS */ 1664 void 1665 Fatal(const char *fmt, ...) 1666 { 1667 va_list ap; 1668 1669 va_start(ap, fmt); 1670 if (jobsRunning) 1671 Job_Wait(); 1672 1673 (void)fflush(stdout); 1674 (void)vfprintf(stderr, fmt, ap); 1675 va_end(ap); 1676 (void)fprintf(stderr, "\n"); 1677 (void)fflush(stderr); 1678 1679 PrintOnError(NULL, NULL); 1680 1681 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1682 Targ_PrintGraph(2); 1683 Trace_Log(MAKEERROR, 0); 1684 exit(2); /* Not 1 so -q can distinguish error */ 1685 } 1686 1687 /* 1688 * Punt -- 1689 * Major exception once jobs are being created. Kills all jobs, prints 1690 * a message and exits. 1691 * 1692 * Results: 1693 * None 1694 * 1695 * Side Effects: 1696 * All children are killed indiscriminately and the program Lib_Exits 1697 */ 1698 /* VARARGS */ 1699 void 1700 Punt(const char *fmt, ...) 1701 { 1702 va_list ap; 1703 1704 va_start(ap, fmt); 1705 (void)fflush(stdout); 1706 (void)fprintf(stderr, "%s: ", progname); 1707 (void)vfprintf(stderr, fmt, ap); 1708 va_end(ap); 1709 (void)fprintf(stderr, "\n"); 1710 (void)fflush(stderr); 1711 1712 PrintOnError(NULL, NULL); 1713 1714 DieHorribly(); 1715 } 1716 1717 /*- 1718 * DieHorribly -- 1719 * Exit without giving a message. 1720 * 1721 * Results: 1722 * None 1723 * 1724 * Side Effects: 1725 * A big one... 1726 */ 1727 void 1728 DieHorribly(void) 1729 { 1730 if (jobsRunning) 1731 Job_AbortAll(); 1732 if (DEBUG(GRAPH2)) 1733 Targ_PrintGraph(2); 1734 Trace_Log(MAKEERROR, 0); 1735 exit(2); /* Not 1, so -q can distinguish error */ 1736 } 1737 1738 /* 1739 * Finish -- 1740 * Called when aborting due to errors in child shell to signal 1741 * abnormal exit. 1742 * 1743 * Results: 1744 * None 1745 * 1746 * Side Effects: 1747 * The program exits 1748 */ 1749 void 1750 Finish(int errors) 1751 /* number of errors encountered in Make_Make */ 1752 { 1753 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1754 } 1755 1756 /* 1757 * eunlink -- 1758 * Remove a file carefully, avoiding directories. 1759 */ 1760 int 1761 eunlink(const char *file) 1762 { 1763 struct stat st; 1764 1765 if (lstat(file, &st) == -1) 1766 return -1; 1767 1768 if (S_ISDIR(st.st_mode)) { 1769 errno = EISDIR; 1770 return -1; 1771 } 1772 return unlink(file); 1773 } 1774 1775 /* 1776 * execError -- 1777 * Print why exec failed, avoiding stdio. 1778 */ 1779 void 1780 execError(const char *af, const char *av) 1781 { 1782 #ifdef USE_IOVEC 1783 int i = 0; 1784 struct iovec iov[8]; 1785 #define IOADD(s) \ 1786 (void)(iov[i].iov_base = UNCONST(s), \ 1787 iov[i].iov_len = strlen(iov[i].iov_base), \ 1788 i++) 1789 #else 1790 #define IOADD(void)write(2, s, strlen(s)) 1791 #endif 1792 1793 IOADD(progname); 1794 IOADD(": "); 1795 IOADD(af); 1796 IOADD("("); 1797 IOADD(av); 1798 IOADD(") failed ("); 1799 IOADD(strerror(errno)); 1800 IOADD(")\n"); 1801 1802 #ifdef USE_IOVEC 1803 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1804 continue; 1805 #endif 1806 } 1807 1808 /* 1809 * usage -- 1810 * exit with usage message 1811 */ 1812 static void 1813 usage(void) 1814 { 1815 char *p; 1816 if ((p = strchr(progname, '[')) != NULL) 1817 *p = '\0'; 1818 1819 (void)fprintf(stderr, 1820 "usage: %s [-BeikNnqrstWwX] \n\ 1821 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1822 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1823 [-V variable] [variable=value] [target ...]\n", progname); 1824 exit(2); 1825 } 1826 1827 1828 int 1829 PrintAddr(void *a, void *b) 1830 { 1831 printf("%lx ", (unsigned long) a); 1832 return b ? 0 : 0; 1833 } 1834 1835 1836 1837 void 1838 PrintOnError(GNode *gn, const char *s) 1839 { 1840 static GNode *en = NULL; 1841 char tmp[64]; 1842 char *cp; 1843 1844 if (s) 1845 printf("%s", s); 1846 1847 printf("\n%s: stopped in %s\n", progname, curdir); 1848 1849 if (en) 1850 return; /* we've been here! */ 1851 if (gn) { 1852 /* 1853 * We can print this even if there is no .ERROR target. 1854 */ 1855 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1856 } 1857 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1858 sizeof(tmp) - 1); 1859 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 1860 if (cp) { 1861 if (*cp) 1862 printf("%s", cp); 1863 free(cp); 1864 } 1865 fflush(stdout); 1866 1867 /* 1868 * Finally, see if there is a .ERROR target, and run it if so. 1869 */ 1870 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1871 if (en) { 1872 en->type |= OP_SPECIAL; 1873 Compat_Make(en, en); 1874 } 1875 } 1876 1877 void 1878 Main_ExportMAKEFLAGS(Boolean first) 1879 { 1880 static int once = 1; 1881 char tmp[64]; 1882 char *s; 1883 1884 if (once != first) 1885 return; 1886 once = 0; 1887 1888 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1889 sizeof(tmp)); 1890 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 1891 if (s && *s) { 1892 #ifdef POSIX 1893 setenv("MAKEFLAGS", s, 1); 1894 #else 1895 setenv("MAKE", s, 1); 1896 #endif 1897 } 1898 } 1899 1900 char * 1901 getTmpdir(void) 1902 { 1903 static char *tmpdir = NULL; 1904 1905 if (!tmpdir) { 1906 struct stat st; 1907 1908 /* 1909 * Honor $TMPDIR but only if it is valid. 1910 * Ensure it ends with /. 1911 */ 1912 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 1913 VARF_WANTRES); 1914 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1915 free(tmpdir); 1916 tmpdir = bmake_strdup(_PATH_TMP); 1917 } 1918 } 1919 return tmpdir; 1920 } 1921 1922 /* 1923 * Create and open a temp file using "pattern". 1924 * If "fnamep" is provided set it to a copy of the filename created. 1925 * Otherwise unlink the file once open. 1926 */ 1927 int 1928 mkTempFile(const char *pattern, char **fnamep) 1929 { 1930 static char *tmpdir = NULL; 1931 char tfile[MAXPATHLEN]; 1932 int fd; 1933 1934 if (!pattern) 1935 pattern = TMPPAT; 1936 if (!tmpdir) 1937 tmpdir = getTmpdir(); 1938 if (pattern[0] == '/') { 1939 snprintf(tfile, sizeof(tfile), "%s", pattern); 1940 } else { 1941 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1942 } 1943 if ((fd = mkstemp(tfile)) < 0) 1944 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1945 if (fnamep) { 1946 *fnamep = bmake_strdup(tfile); 1947 } else { 1948 unlink(tfile); /* we just want the descriptor */ 1949 } 1950 return fd; 1951 } 1952 1953 /* 1954 * Convert a string representation of a boolean. 1955 * Anything that looks like "No", "False", "Off", "0" etc, 1956 * is FALSE, otherwise TRUE. 1957 */ 1958 Boolean 1959 s2Boolean(const char *s, Boolean bf) 1960 { 1961 if (s) { 1962 switch(*s) { 1963 case '\0': /* not set - the default wins */ 1964 break; 1965 case '0': 1966 case 'F': 1967 case 'f': 1968 case 'N': 1969 case 'n': 1970 bf = FALSE; 1971 break; 1972 case 'O': 1973 case 'o': 1974 switch (s[1]) { 1975 case 'F': 1976 case 'f': 1977 bf = FALSE; 1978 break; 1979 default: 1980 bf = TRUE; 1981 break; 1982 } 1983 break; 1984 default: 1985 bf = TRUE; 1986 break; 1987 } 1988 } 1989 return (bf); 1990 } 1991 1992 /* 1993 * Return a Boolean based on setting of a knob. 1994 * 1995 * If the knob is not set, the supplied default is the return value. 1996 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1997 * is FALSE, otherwise TRUE. 1998 */ 1999 Boolean 2000 getBoolean(const char *name, Boolean bf) 2001 { 2002 char tmp[64]; 2003 char *cp; 2004 2005 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 2006 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2007 2008 if (cp) { 2009 bf = s2Boolean(cp, bf); 2010 free(cp); 2011 } 2012 } 2013 return (bf); 2014 } 2015
Indexes created Mon Sep 22 13:09:51 GMT 2025