main.c revision 1.261
1 /* $NetBSD: main.c,v 1.261 2017/04/16 20:00:58 maya 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 1.261 2017/04/16 20:00:58 maya 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 1.261 2017/04/16 20:00:58 maya 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 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 155 156 static Boolean noBuiltins; /* -r flag */ 157 static Lst makefiles; /* ordered list of makefiles to read */ 158 static Boolean printVars; /* print value of one or more vars */ 159 static Lst variables; /* list of variables to print */ 160 int maxJobs; /* -j argument */ 161 static int maxJobTokens; /* -j argument */ 162 Boolean compatMake; /* -B argument */ 163 int debug; /* -d argument */ 164 Boolean debugVflag; /* -dV */ 165 Boolean noExecute; /* -n flag */ 166 Boolean noRecursiveExecute; /* -N flag */ 167 Boolean keepgoing; /* -k flag */ 168 Boolean queryFlag; /* -q flag */ 169 Boolean touchFlag; /* -t flag */ 170 Boolean enterFlag; /* -w flag */ 171 Boolean enterFlagObj; /* -w and objdir != srcdir */ 172 Boolean ignoreErrors; /* -i flag */ 173 Boolean beSilent; /* -s flag */ 174 Boolean oldVars; /* variable substitution style */ 175 Boolean checkEnvFirst; /* -e flag */ 176 Boolean parseWarnFatal; /* -W flag */ 177 Boolean jobServer; /* -J flag */ 178 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 179 Boolean varNoExportEnv; /* -X flag */ 180 Boolean doing_depend; /* Set while reading .depend */ 181 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 182 static const char * tracefile; 183 static void MainParseArgs(int, char **); 184 static int ReadMakefile(const void *, const void *); 185 static void usage(void) MAKE_ATTR_DEAD; 186 187 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 188 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 189 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 190 char *progname; /* the program name */ 191 char *makeDependfile; 192 pid_t myPid; 193 int makelevel; 194 195 Boolean forceJobs = FALSE; 196 197 extern Lst parseIncPath; 198 199 /* 200 * For compatibility with the POSIX version of MAKEFLAGS that includes 201 * all the options with out -, convert flags to -f -l -a -g -s. 202 */ 203 static char * 204 explode(const char *flags) 205 { 206 size_t len; 207 char *nf, *st; 208 const char *f; 209 210 if (flags == NULL) 211 return NULL; 212 213 for (f = flags; *f; f++) 214 if (!isalpha((unsigned char)*f)) 215 break; 216 217 if (*f) 218 return bmake_strdup(flags); 219 220 len = strlen(flags); 221 st = nf = bmake_malloc(len * 3 + 1); 222 while (*flags) { 223 *nf++ = '-'; 224 *nf++ = *flags++; 225 *nf++ = ' '; 226 } 227 *nf = '\0'; 228 return st; 229 } 230 231 static void 232 parse_debug_options(const char *argvalue) 233 { 234 const char *modules; 235 const char *mode; 236 char *fname; 237 int len; 238 239 for (modules = argvalue; *modules; ++modules) { 240 switch (*modules) { 241 case 'A': 242 debug = ~0; 243 break; 244 case 'a': 245 debug |= DEBUG_ARCH; 246 break; 247 case 'C': 248 debug |= DEBUG_CWD; 249 break; 250 case 'c': 251 debug |= DEBUG_COND; 252 break; 253 case 'd': 254 debug |= DEBUG_DIR; 255 break; 256 case 'e': 257 debug |= DEBUG_ERROR; 258 break; 259 case 'f': 260 debug |= DEBUG_FOR; 261 break; 262 case 'g': 263 if (modules[1] == '1') { 264 debug |= DEBUG_GRAPH1; 265 ++modules; 266 } 267 else if (modules[1] == '2') { 268 debug |= DEBUG_GRAPH2; 269 ++modules; 270 } 271 else if (modules[1] == '3') { 272 debug |= DEBUG_GRAPH3; 273 ++modules; 274 } 275 break; 276 case 'j': 277 debug |= DEBUG_JOB; 278 break; 279 case 'l': 280 debug |= DEBUG_LOUD; 281 break; 282 case 'M': 283 debug |= DEBUG_META; 284 break; 285 case 'm': 286 debug |= DEBUG_MAKE; 287 break; 288 case 'n': 289 debug |= DEBUG_SCRIPT; 290 break; 291 case 'p': 292 debug |= DEBUG_PARSE; 293 break; 294 case 's': 295 debug |= DEBUG_SUFF; 296 break; 297 case 't': 298 debug |= DEBUG_TARG; 299 break; 300 case 'V': 301 debugVflag = TRUE; 302 break; 303 case 'v': 304 debug |= DEBUG_VAR; 305 break; 306 case 'x': 307 debug |= DEBUG_SHELL; 308 break; 309 case 'F': 310 if (debug_file != stdout && debug_file != stderr) 311 fclose(debug_file); 312 if (*++modules == '+') { 313 modules++; 314 mode = "a"; 315 } else 316 mode = "w"; 317 if (strcmp(modules, "stdout") == 0) { 318 debug_file = stdout; 319 goto debug_setbuf; 320 } 321 if (strcmp(modules, "stderr") == 0) { 322 debug_file = stderr; 323 goto debug_setbuf; 324 } 325 len = strlen(modules); 326 fname = bmake_malloc(len + 20); 327 memcpy(fname, modules, len + 1); 328 /* Let the filename be modified by the pid */ 329 if (strcmp(fname + len - 3, ".%d") == 0) 330 snprintf(fname + len - 2, 20, "%d", getpid()); 331 debug_file = fopen(fname, mode); 332 if (!debug_file) { 333 fprintf(stderr, "Cannot open debug file %s\n", 334 fname); 335 usage(); 336 } 337 free(fname); 338 goto debug_setbuf; 339 default: 340 (void)fprintf(stderr, 341 "%s: illegal argument to d option -- %c\n", 342 progname, *modules); 343 usage(); 344 } 345 } 346 debug_setbuf: 347 /* 348 * Make the debug_file unbuffered, and make 349 * stdout line buffered (unless debugfile == stdout). 350 */ 351 setvbuf(debug_file, NULL, _IONBF, 0); 352 if (debug_file != stdout) { 353 setvbuf(stdout, NULL, _IOLBF, 0); 354 } 355 } 356 357 /*- 358 * MainParseArgs -- 359 * Parse a given argument vector. Called from main() and from 360 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 361 * 362 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 363 * 364 * Results: 365 * None 366 * 367 * Side Effects: 368 * Various global and local flags will be set depending on the flags 369 * given 370 */ 371 static void 372 MainParseArgs(int argc, char **argv) 373 { 374 char *p; 375 int c = '?'; 376 int arginc; 377 char *argvalue; 378 const char *getopt_def; 379 struct stat sa, sb; 380 char *optscan; 381 Boolean inOption, dashDash = FALSE; 382 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 383 384 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 385 /* Can't actually use getopt(3) because rescanning is not portable */ 386 387 getopt_def = OPTFLAGS; 388 rearg: 389 inOption = FALSE; 390 optscan = NULL; 391 while(argc > 1) { 392 char *getopt_spec; 393 if(!inOption) 394 optscan = argv[1]; 395 c = *optscan++; 396 arginc = 0; 397 if(inOption) { 398 if(c == '\0') { 399 ++argv; 400 --argc; 401 inOption = FALSE; 402 continue; 403 } 404 } else { 405 if (c != '-' || dashDash) 406 break; 407 inOption = TRUE; 408 c = *optscan++; 409 } 410 /* '-' found at some earlier point */ 411 getopt_spec = strchr(getopt_def, c); 412 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 413 /* -<something> found, and <something> should have an arg */ 414 inOption = FALSE; 415 arginc = 1; 416 argvalue = optscan; 417 if(*argvalue == '\0') { 418 if (argc < 3) 419 goto noarg; 420 argvalue = argv[2]; 421 arginc = 2; 422 } 423 } else { 424 argvalue = NULL; 425 } 426 switch(c) { 427 case '\0': 428 arginc = 1; 429 inOption = FALSE; 430 break; 431 case 'B': 432 compatMake = TRUE; 433 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 434 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 435 break; 436 case 'C': 437 if (chdir(argvalue) == -1) { 438 (void)fprintf(stderr, 439 "%s: chdir %s: %s\n", 440 progname, argvalue, 441 strerror(errno)); 442 exit(1); 443 } 444 if (getcwd(curdir, MAXPATHLEN) == NULL) { 445 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 446 exit(2); 447 } 448 if (argvalue[0] == '/' && 449 stat(argvalue, &sa) != -1 && 450 stat(curdir, &sb) != -1 && 451 sa.st_ino == sb.st_ino && 452 sa.st_dev == sb.st_dev) 453 strncpy(curdir, argvalue, MAXPATHLEN); 454 ignorePWD = TRUE; 455 break; 456 case 'D': 457 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 458 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 459 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 460 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 461 break; 462 case 'I': 463 if (argvalue == NULL) goto noarg; 464 Parse_AddIncludeDir(argvalue); 465 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 466 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 467 break; 468 case 'J': 469 if (argvalue == NULL) goto noarg; 470 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 471 (void)fprintf(stderr, 472 "%s: internal error -- J option malformed (%s)\n", 473 progname, argvalue); 474 usage(); 475 } 476 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 477 (fcntl(jp_1, F_GETFD, 0) < 0)) { 478 #if 0 479 (void)fprintf(stderr, 480 "%s: ###### warning -- J descriptors were closed!\n", 481 progname); 482 exit(2); 483 #endif 484 jp_0 = -1; 485 jp_1 = -1; 486 compatMake = TRUE; 487 } else { 488 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 489 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 490 jobServer = TRUE; 491 } 492 break; 493 case 'N': 494 noExecute = TRUE; 495 noRecursiveExecute = TRUE; 496 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 497 break; 498 case 'S': 499 keepgoing = FALSE; 500 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 501 break; 502 case 'T': 503 if (argvalue == NULL) goto noarg; 504 tracefile = bmake_strdup(argvalue); 505 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 506 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 507 break; 508 case 'V': 509 if (argvalue == NULL) goto noarg; 510 printVars = TRUE; 511 (void)Lst_AtEnd(variables, argvalue); 512 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 513 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 514 break; 515 case 'W': 516 parseWarnFatal = TRUE; 517 break; 518 case 'X': 519 varNoExportEnv = TRUE; 520 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 521 break; 522 case 'd': 523 if (argvalue == NULL) goto noarg; 524 /* If '-d-opts' don't pass to children */ 525 if (argvalue[0] == '-') 526 argvalue++; 527 else { 528 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 529 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 530 } 531 parse_debug_options(argvalue); 532 break; 533 case 'e': 534 checkEnvFirst = TRUE; 535 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 536 break; 537 case 'f': 538 if (argvalue == NULL) goto noarg; 539 (void)Lst_AtEnd(makefiles, argvalue); 540 break; 541 case 'i': 542 ignoreErrors = TRUE; 543 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 544 break; 545 case 'j': 546 if (argvalue == NULL) goto noarg; 547 forceJobs = TRUE; 548 maxJobs = strtol(argvalue, &p, 0); 549 if (*p != '\0' || maxJobs < 1) { 550 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 551 progname); 552 exit(1); 553 } 554 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 555 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 556 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 557 maxJobTokens = maxJobs; 558 break; 559 case 'k': 560 keepgoing = TRUE; 561 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 562 break; 563 case 'm': 564 if (argvalue == NULL) goto noarg; 565 /* look for magic parent directory search string */ 566 if (strncmp(".../", argvalue, 4) == 0) { 567 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 568 found_path, sizeof(found_path))) 569 break; /* nothing doing */ 570 (void)Dir_AddDir(sysIncPath, found_path); 571 } else { 572 (void)Dir_AddDir(sysIncPath, argvalue); 573 } 574 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 575 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 576 break; 577 case 'n': 578 noExecute = TRUE; 579 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 580 break; 581 case 'q': 582 queryFlag = TRUE; 583 /* Kind of nonsensical, wot? */ 584 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 585 break; 586 case 'r': 587 noBuiltins = TRUE; 588 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 589 break; 590 case 's': 591 beSilent = TRUE; 592 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 593 break; 594 case 't': 595 touchFlag = TRUE; 596 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 597 break; 598 case 'w': 599 enterFlag = TRUE; 600 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 601 break; 602 case '-': 603 dashDash = TRUE; 604 break; 605 default: 606 case '?': 607 usage(); 608 } 609 argv += arginc; 610 argc -= arginc; 611 } 612 613 oldVars = TRUE; 614 615 /* 616 * See if the rest of the arguments are variable assignments and 617 * perform them if so. Else take them to be targets and stuff them 618 * on the end of the "create" list. 619 */ 620 for (; argc > 1; ++argv, --argc) 621 if (Parse_IsVar(argv[1])) { 622 Parse_DoVar(argv[1], VAR_CMD); 623 } else { 624 if (!*argv[1]) 625 Punt("illegal (null) argument."); 626 if (*argv[1] == '-' && !dashDash) 627 goto rearg; 628 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 629 } 630 631 return; 632 noarg: 633 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 634 progname, c); 635 usage(); 636 } 637 638 /*- 639 * Main_ParseArgLine -- 640 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 641 * is encountered and by main() when reading the .MAKEFLAGS envariable. 642 * Takes a line of arguments and breaks it into its 643 * component words and passes those words and the number of them to the 644 * MainParseArgs function. 645 * The line should have all its leading whitespace removed. 646 * 647 * Input: 648 * line Line to fracture 649 * 650 * Results: 651 * None 652 * 653 * Side Effects: 654 * Only those that come from the various arguments. 655 */ 656 void 657 Main_ParseArgLine(const char *line) 658 { 659 char **argv; /* Manufactured argument vector */ 660 int argc; /* Number of arguments in argv */ 661 char *args; /* Space used by the args */ 662 char *buf, *p1; 663 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 664 size_t len; 665 666 if (line == NULL) 667 return; 668 for (; *line == ' '; ++line) 669 continue; 670 if (!*line) 671 return; 672 673 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 674 (void)snprintf(buf, len, "%s %s", argv0, line); 675 free(p1); 676 677 argv = brk_string(buf, &argc, TRUE, &args); 678 if (argv == NULL) { 679 Error("Unterminated quoted string [%s]", buf); 680 free(buf); 681 return; 682 } 683 free(buf); 684 MainParseArgs(argc, argv); 685 686 free(args); 687 free(argv); 688 } 689 690 Boolean 691 Main_SetObjdir(const char *fmt, ...) 692 { 693 struct stat sb; 694 char *path; 695 char buf[MAXPATHLEN + 1]; 696 Boolean rc = FALSE; 697 va_list ap; 698 699 va_start(ap, fmt); 700 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 701 va_end(ap); 702 703 if (path[0] != '/') { 704 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 705 path = buf; 706 } 707 708 /* look for the directory and try to chdir there */ 709 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 710 if (chdir(path)) { 711 (void)fprintf(stderr, "make warning: %s: %s.\n", 712 path, strerror(errno)); 713 } else { 714 strncpy(objdir, path, MAXPATHLEN); 715 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 716 setenv("PWD", objdir, 1); 717 Dir_InitDot(); 718 cached_realpath(".OBJDIR", NULL); /* purge */ 719 rc = TRUE; 720 if (enterFlag && strcmp(objdir, curdir) != 0) 721 enterFlagObj = TRUE; 722 } 723 } 724 725 return rc; 726 } 727 728 static Boolean 729 Main_SetVarObjdir(const char *var, const char *suffix) 730 { 731 char *p, *path, *xpath; 732 733 if ((path = Var_Value(var, VAR_CMD, &p)) == NULL) 734 return FALSE; 735 736 /* expand variable substitutions */ 737 if (strchr(path, '$') != 0) 738 xpath = Var_Subst(NULL, path, VAR_GLOBAL, VARF_WANTRES); 739 else 740 xpath = path; 741 742 (void)Main_SetObjdir("%s%s", xpath, suffix); 743 744 if (xpath != path) 745 free(xpath); 746 free(p); 747 return TRUE; 748 } 749 750 /*- 751 * ReadAllMakefiles -- 752 * wrapper around ReadMakefile() to read all. 753 * 754 * Results: 755 * TRUE if ok, FALSE on error 756 */ 757 static int 758 ReadAllMakefiles(const void *p, const void *q) 759 { 760 return (ReadMakefile(p, q) == 0); 761 } 762 763 int 764 str2Lst_Append(Lst lp, char *str, const char *sep) 765 { 766 char *cp; 767 int n; 768 769 if (!sep) 770 sep = " \t"; 771 772 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 773 (void)Lst_AtEnd(lp, cp); 774 n++; 775 } 776 return (n); 777 } 778 779 #ifdef SIGINFO 780 /*ARGSUSED*/ 781 static void 782 siginfo(int signo MAKE_ATTR_UNUSED) 783 { 784 char dir[MAXPATHLEN]; 785 char str[2 * MAXPATHLEN]; 786 int len; 787 if (getcwd(dir, sizeof(dir)) == NULL) 788 return; 789 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 790 if (len > 0) 791 (void)write(STDERR_FILENO, str, (size_t)len); 792 } 793 #endif 794 795 /* 796 * Allow makefiles some control over the mode we run in. 797 */ 798 void 799 MakeMode(const char *mode) 800 { 801 char *mp = NULL; 802 803 if (!mode) 804 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 805 VAR_GLOBAL, VARF_WANTRES); 806 807 if (mode && *mode) { 808 if (strstr(mode, "compat")) { 809 compatMake = TRUE; 810 forceJobs = FALSE; 811 } 812 #if USE_META 813 if (strstr(mode, "meta")) 814 meta_mode_init(mode); 815 #endif 816 } 817 818 free(mp); 819 } 820 821 /*- 822 * main -- 823 * The main function, for obvious reasons. Initializes variables 824 * and a few modules, then parses the arguments give it in the 825 * environment and on the command line. Reads the system makefile 826 * followed by either Makefile, makefile or the file given by the 827 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 828 * flags it has received by then uses either the Make or the Compat 829 * module to create the initial list of targets. 830 * 831 * Results: 832 * If -q was given, exits -1 if anything was out-of-date. Else it exits 833 * 0. 834 * 835 * Side Effects: 836 * The program exits when done. Targets are created. etc. etc. etc. 837 */ 838 int 839 main(int argc, char **argv) 840 { 841 Lst targs; /* target nodes to create -- passed to Make_Init */ 842 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 843 struct stat sb, sa; 844 char *p1, *path; 845 char mdpath[MAXPATHLEN]; 846 const char *machine = getenv("MACHINE"); 847 const char *machine_arch = getenv("MACHINE_ARCH"); 848 char *syspath = getenv("MAKESYSPATH"); 849 Lst sysMkPath; /* Path of sys.mk */ 850 char *cp = NULL, *start; 851 /* avoid faults on read-only strings */ 852 static char defsyspath[] = _PATH_DEFSYSPATH; 853 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 854 struct timeval rightnow; /* to initialize random seed */ 855 struct utsname utsname; 856 857 /* default to writing debug to stderr */ 858 debug_file = stderr; 859 860 #ifdef SIGINFO 861 (void)bmake_signal(SIGINFO, siginfo); 862 #endif 863 /* 864 * Set the seed to produce a different random sequence 865 * on each program execution. 866 */ 867 gettimeofday(&rightnow, NULL); 868 srandom(rightnow.tv_sec + rightnow.tv_usec); 869 870 if ((progname = strrchr(argv[0], '/')) != NULL) 871 progname++; 872 else 873 progname = argv[0]; 874 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 875 /* 876 * get rid of resource limit on file descriptors 877 */ 878 { 879 struct rlimit rl; 880 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 881 rl.rlim_cur != rl.rlim_max) { 882 rl.rlim_cur = rl.rlim_max; 883 (void)setrlimit(RLIMIT_NOFILE, &rl); 884 } 885 } 886 #endif 887 888 if (uname(&utsname) == -1) { 889 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 890 strerror(errno)); 891 exit(2); 892 } 893 894 /* 895 * Get the name of this type of MACHINE from utsname 896 * so we can share an executable for similar machines. 897 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 898 * 899 * Note that both MACHINE and MACHINE_ARCH are decided at 900 * run-time. 901 */ 902 if (!machine) { 903 #ifdef MAKE_NATIVE 904 machine = utsname.machine; 905 #else 906 #ifdef MAKE_MACHINE 907 machine = MAKE_MACHINE; 908 #else 909 machine = "unknown"; 910 #endif 911 #endif 912 } 913 914 if (!machine_arch) { 915 #ifdef MAKE_NATIVE 916 static char machine_arch_buf[sizeof(utsname.machine)]; 917 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 918 size_t len = sizeof(machine_arch_buf); 919 920 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 921 &len, NULL, 0) < 0) { 922 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 923 strerror(errno)); 924 exit(2); 925 } 926 927 machine_arch = machine_arch_buf; 928 #else 929 #ifndef MACHINE_ARCH 930 #ifdef MAKE_MACHINE_ARCH 931 machine_arch = MAKE_MACHINE_ARCH; 932 #else 933 machine_arch = "unknown"; 934 #endif 935 #else 936 machine_arch = MACHINE_ARCH; 937 #endif 938 #endif 939 } 940 941 myPid = getpid(); /* remember this for vFork() */ 942 943 /* 944 * Just in case MAKEOBJDIR wants us to do something tricky. 945 */ 946 Var_Init(); /* Initialize the lists of variables for 947 * parsing arguments */ 948 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 949 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 950 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 951 #ifdef MAKE_VERSION 952 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 953 #endif 954 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 955 /* 956 * This is the traditional preference for makefiles. 957 */ 958 #ifndef MAKEFILE_PREFERENCE_LIST 959 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 960 #endif 961 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 962 VAR_GLOBAL, 0); 963 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 964 965 create = Lst_Init(FALSE); 966 makefiles = Lst_Init(FALSE); 967 printVars = FALSE; 968 debugVflag = FALSE; 969 variables = Lst_Init(FALSE); 970 beSilent = FALSE; /* Print commands as executed */ 971 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 972 noExecute = FALSE; /* Execute all commands */ 973 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 974 keepgoing = FALSE; /* Stop on error */ 975 allPrecious = FALSE; /* Remove targets when interrupted */ 976 deleteOnError = FALSE; /* Historical default behavior */ 977 queryFlag = FALSE; /* This is not just a check-run */ 978 noBuiltins = FALSE; /* Read the built-in rules */ 979 touchFlag = FALSE; /* Actually update targets */ 980 debug = 0; /* No debug verbosity, please. */ 981 jobsRunning = FALSE; 982 983 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 984 maxJobTokens = maxJobs; 985 compatMake = FALSE; /* No compat mode */ 986 ignorePWD = FALSE; 987 988 /* 989 * Initialize the parsing, directory and variable modules to prepare 990 * for the reading of inclusion paths and variable settings on the 991 * command line 992 */ 993 994 /* 995 * Initialize various variables. 996 * MAKE also gets this name, for compatibility 997 * .MAKEFLAGS gets set to the empty string just in case. 998 * MFLAGS also gets initialized empty, for compatibility. 999 */ 1000 Parse_Init(); 1001 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1002 /* 1003 * Leave alone if it is an absolute path, or if it does 1004 * not contain a '/' in which case we need to find it in 1005 * the path, like execvp(3) and the shells do. 1006 */ 1007 p1 = argv[0]; 1008 } else { 1009 /* 1010 * A relative path, canonicalize it. 1011 */ 1012 p1 = cached_realpath(argv[0], mdpath); 1013 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1014 p1 = argv[0]; /* realpath failed */ 1015 } 1016 } 1017 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1018 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1019 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1020 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1021 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1022 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1023 /* some makefiles need to know this */ 1024 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1025 1026 /* 1027 * Set some other useful macros 1028 */ 1029 { 1030 char tmp[64], *ep; 1031 1032 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1033 if (makelevel < 0) 1034 makelevel = 0; 1035 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1036 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1037 snprintf(tmp, sizeof(tmp), "%u", myPid); 1038 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1039 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1040 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1041 } 1042 if (makelevel > 0) { 1043 char pn[1024]; 1044 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1045 progname = bmake_strdup(pn); 1046 } 1047 1048 #ifdef USE_META 1049 meta_init(); 1050 #endif 1051 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1052 1053 /* 1054 * First snag any flags out of the MAKE environment variable. 1055 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1056 * in a different format). 1057 */ 1058 #ifdef POSIX 1059 p1 = explode(getenv("MAKEFLAGS")); 1060 Main_ParseArgLine(p1); 1061 free(p1); 1062 #else 1063 Main_ParseArgLine(getenv("MAKE")); 1064 #endif 1065 1066 /* 1067 * Find where we are (now). 1068 * We take care of PWD for the automounter below... 1069 */ 1070 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1071 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1072 progname, strerror(errno)); 1073 exit(2); 1074 } 1075 1076 MainParseArgs(argc, argv); 1077 1078 if (enterFlag) 1079 printf("%s: Entering directory `%s'\n", progname, curdir); 1080 1081 /* 1082 * Verify that cwd is sane. 1083 */ 1084 if (stat(curdir, &sa) == -1) { 1085 (void)fprintf(stderr, "%s: %s: %s.\n", 1086 progname, curdir, strerror(errno)); 1087 exit(2); 1088 } 1089 1090 /* 1091 * All this code is so that we know where we are when we start up 1092 * on a different machine with pmake. 1093 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1094 * since the value of curdir can vary depending on how we got 1095 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1096 * or via subdir.mk in which case its likely a shell which does 1097 * not provide it. 1098 * So, to stop it breaking this case only, we ignore PWD if 1099 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1100 */ 1101 #ifndef NO_PWD_OVERRIDE 1102 if (!ignorePWD) { 1103 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1104 1105 if ((pwd = getenv("PWD")) != NULL && 1106 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1107 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1108 VAR_CMD, &ptmp2); 1109 1110 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1111 if (stat(pwd, &sb) == 0 && 1112 sa.st_ino == sb.st_ino && 1113 sa.st_dev == sb.st_dev) 1114 (void)strncpy(curdir, pwd, MAXPATHLEN); 1115 } 1116 } 1117 free(ptmp1); 1118 free(ptmp2); 1119 } 1120 #endif 1121 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1122 1123 /* 1124 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1125 * MAKEOBJDIR is set in the environment, try only that value 1126 * and fall back to .CURDIR if it does not exist. 1127 * 1128 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1129 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1130 * of these paths exist, just use .CURDIR. 1131 */ 1132 Dir_Init(curdir); 1133 (void)Main_SetObjdir("%s", curdir); 1134 1135 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1136 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1137 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1138 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1139 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1140 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1141 1142 /* 1143 * Initialize archive, target and suffix modules in preparation for 1144 * parsing the makefile(s) 1145 */ 1146 Arch_Init(); 1147 Targ_Init(); 1148 Suff_Init(); 1149 Trace_Init(tracefile); 1150 1151 DEFAULT = NULL; 1152 (void)time(&now); 1153 1154 Trace_Log(MAKESTART, NULL); 1155 1156 /* 1157 * Set up the .TARGETS variable to contain the list of targets to be 1158 * created. If none specified, make the variable empty -- the parser 1159 * will fill the thing in with the default or .MAIN target. 1160 */ 1161 if (!Lst_IsEmpty(create)) { 1162 LstNode ln; 1163 1164 for (ln = Lst_First(create); ln != NULL; 1165 ln = Lst_Succ(ln)) { 1166 char *name = (char *)Lst_Datum(ln); 1167 1168 Var_Append(".TARGETS", name, VAR_GLOBAL); 1169 } 1170 } else 1171 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1172 1173 1174 /* 1175 * If no user-supplied system path was given (through the -m option) 1176 * add the directories from the DEFSYSPATH (more than one may be given 1177 * as dir1:...:dirn) to the system include path. 1178 */ 1179 if (syspath == NULL || *syspath == '\0') 1180 syspath = defsyspath; 1181 else 1182 syspath = bmake_strdup(syspath); 1183 1184 for (start = syspath; *start != '\0'; start = cp) { 1185 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1186 continue; 1187 if (*cp == ':') { 1188 *cp++ = '\0'; 1189 } 1190 /* look for magic parent directory search string */ 1191 if (strncmp(".../", start, 4) != 0) { 1192 (void)Dir_AddDir(defIncPath, start); 1193 } else { 1194 if (Dir_FindHereOrAbove(curdir, start+4, 1195 found_path, sizeof(found_path))) { 1196 (void)Dir_AddDir(defIncPath, found_path); 1197 } 1198 } 1199 } 1200 if (syspath != defsyspath) 1201 free(syspath); 1202 1203 /* 1204 * Read in the built-in rules first, followed by the specified 1205 * makefile, if it was (makefile != NULL), or the default 1206 * makefile and Makefile, in that order, if it wasn't. 1207 */ 1208 if (!noBuiltins) { 1209 LstNode ln; 1210 1211 sysMkPath = Lst_Init(FALSE); 1212 Dir_Expand(_PATH_DEFSYSMK, 1213 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1214 sysMkPath); 1215 if (Lst_IsEmpty(sysMkPath)) 1216 Fatal("%s: no system rules (%s).", progname, 1217 _PATH_DEFSYSMK); 1218 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1219 if (ln == NULL) 1220 Fatal("%s: cannot open %s.", progname, 1221 (char *)Lst_Datum(ln)); 1222 } 1223 1224 if (!Lst_IsEmpty(makefiles)) { 1225 LstNode ln; 1226 1227 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1228 if (ln != NULL) 1229 Fatal("%s: cannot open %s.", progname, 1230 (char *)Lst_Datum(ln)); 1231 } else { 1232 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1233 VAR_CMD, VARF_WANTRES); 1234 if (p1) { 1235 (void)str2Lst_Append(makefiles, p1, NULL); 1236 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1237 free(p1); 1238 } 1239 } 1240 1241 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1242 if (!noBuiltins || !printVars) { 1243 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1244 VAR_CMD, VARF_WANTRES); 1245 doing_depend = TRUE; 1246 (void)ReadMakefile(makeDependfile, NULL); 1247 doing_depend = FALSE; 1248 } 1249 1250 if (enterFlagObj) 1251 printf("%s: Entering directory `%s'\n", progname, objdir); 1252 1253 MakeMode(NULL); 1254 1255 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1256 free(p1); 1257 1258 if (!forceJobs && !compatMake && 1259 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1260 char *value; 1261 int n; 1262 1263 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1264 n = strtol(value, NULL, 0); 1265 if (n < 1) { 1266 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1267 progname); 1268 exit(1); 1269 } 1270 if (n != maxJobs) { 1271 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1272 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1273 } 1274 maxJobs = n; 1275 maxJobTokens = maxJobs; 1276 forceJobs = TRUE; 1277 free(value); 1278 } 1279 1280 /* 1281 * Be compatible if user did not specify -j and did not explicitly 1282 * turned compatibility on 1283 */ 1284 if (!compatMake && !forceJobs) { 1285 compatMake = TRUE; 1286 } 1287 1288 if (!compatMake) 1289 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1290 if (DEBUG(JOB)) 1291 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1292 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1293 1294 if (!printVars) 1295 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1296 1297 1298 /* 1299 * For compatibility, look at the directories in the VPATH variable 1300 * and add them to the search path, if the variable is defined. The 1301 * variable's value is in the same format as the PATH envariable, i.e. 1302 * <directory>:<directory>:<directory>... 1303 */ 1304 if (Var_Exists("VPATH", VAR_CMD)) { 1305 char *vpath, savec; 1306 /* 1307 * GCC stores string constants in read-only memory, but 1308 * Var_Subst will want to write this thing, so store it 1309 * in an array 1310 */ 1311 static char VPATH[] = "${VPATH}"; 1312 1313 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1314 path = vpath; 1315 do { 1316 /* skip to end of directory */ 1317 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1318 continue; 1319 /* Save terminator character so know when to stop */ 1320 savec = *cp; 1321 *cp = '\0'; 1322 /* Add directory to search path */ 1323 (void)Dir_AddDir(dirSearchPath, path); 1324 *cp = savec; 1325 path = cp + 1; 1326 } while (savec == ':'); 1327 free(vpath); 1328 } 1329 1330 /* 1331 * Now that all search paths have been read for suffixes et al, it's 1332 * time to add the default search path to their lists... 1333 */ 1334 Suff_DoPaths(); 1335 1336 /* 1337 * Propagate attributes through :: dependency lists. 1338 */ 1339 Targ_Propagate(); 1340 1341 /* print the initial graph, if the user requested it */ 1342 if (DEBUG(GRAPH1)) 1343 Targ_PrintGraph(1); 1344 1345 /* print the values of any variables requested by the user */ 1346 if (printVars) { 1347 LstNode ln; 1348 Boolean expandVars; 1349 1350 if (debugVflag) 1351 expandVars = FALSE; 1352 else 1353 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1354 for (ln = Lst_First(variables); ln != NULL; 1355 ln = Lst_Succ(ln)) { 1356 char *var = (char *)Lst_Datum(ln); 1357 char *value; 1358 1359 if (strchr(var, '$')) { 1360 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1361 VARF_WANTRES); 1362 } else if (expandVars) { 1363 char tmp[128]; 1364 1365 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1366 Fatal("%s: variable name too big: %s", 1367 progname, var); 1368 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1369 VARF_WANTRES); 1370 } else { 1371 value = Var_Value(var, VAR_GLOBAL, &p1); 1372 } 1373 printf("%s\n", value ? value : ""); 1374 free(p1); 1375 } 1376 } else { 1377 /* 1378 * Have now read the entire graph and need to make a list of 1379 * targets to create. If none was given on the command line, 1380 * we consult the parsing module to find the main target(s) 1381 * to create. 1382 */ 1383 if (Lst_IsEmpty(create)) 1384 targs = Parse_MainName(); 1385 else 1386 targs = Targ_FindList(create, TARG_CREATE); 1387 1388 if (!compatMake) { 1389 /* 1390 * Initialize job module before traversing the graph 1391 * now that any .BEGIN and .END targets have been read. 1392 * This is done only if the -q flag wasn't given 1393 * (to prevent the .BEGIN from being executed should 1394 * it exist). 1395 */ 1396 if (!queryFlag) { 1397 Job_Init(); 1398 jobsRunning = TRUE; 1399 } 1400 1401 /* Traverse the graph, checking on all the targets */ 1402 outOfDate = Make_Run(targs); 1403 } else { 1404 /* 1405 * Compat_Init will take care of creating all the 1406 * targets as well as initializing the module. 1407 */ 1408 Compat_Run(targs); 1409 } 1410 } 1411 1412 #ifdef CLEANUP 1413 Lst_Destroy(targs, NULL); 1414 Lst_Destroy(variables, NULL); 1415 Lst_Destroy(makefiles, NULL); 1416 Lst_Destroy(create, (FreeProc *)free); 1417 #endif 1418 1419 /* print the graph now it's been processed if the user requested it */ 1420 if (DEBUG(GRAPH2)) 1421 Targ_PrintGraph(2); 1422 1423 Trace_Log(MAKEEND, 0); 1424 1425 if (enterFlagObj) 1426 printf("%s: Leaving directory `%s'\n", progname, objdir); 1427 if (enterFlag) 1428 printf("%s: Leaving directory `%s'\n", progname, curdir); 1429 1430 #ifdef USE_META 1431 meta_finish(); 1432 #endif 1433 Suff_End(); 1434 Targ_End(); 1435 Arch_End(); 1436 Var_End(); 1437 Parse_End(); 1438 Dir_End(); 1439 Job_End(); 1440 Trace_End(); 1441 1442 return outOfDate ? 1 : 0; 1443 } 1444 1445 /*- 1446 * ReadMakefile -- 1447 * Open and parse the given makefile. 1448 * 1449 * Results: 1450 * 0 if ok. -1 if couldn't open file. 1451 * 1452 * Side Effects: 1453 * lots 1454 */ 1455 static int 1456 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1457 { 1458 const char *fname = p; /* makefile to read */ 1459 int fd; 1460 size_t len = MAXPATHLEN; 1461 char *name, *path = bmake_malloc(len); 1462 1463 if (!strcmp(fname, "-")) { 1464 Parse_File(NULL /*stdin*/, -1); 1465 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1466 } else { 1467 /* if we've chdir'd, rebuild the path name */ 1468 if (strcmp(curdir, objdir) && *fname != '/') { 1469 size_t plen = strlen(curdir) + strlen(fname) + 2; 1470 if (len < plen) 1471 path = bmake_realloc(path, len = 2 * plen); 1472 1473 (void)snprintf(path, len, "%s/%s", curdir, fname); 1474 fd = open(path, O_RDONLY); 1475 if (fd != -1) { 1476 fname = path; 1477 goto found; 1478 } 1479 1480 /* If curdir failed, try objdir (ala .depend) */ 1481 plen = strlen(objdir) + strlen(fname) + 2; 1482 if (len < plen) 1483 path = bmake_realloc(path, len = 2 * plen); 1484 (void)snprintf(path, len, "%s/%s", objdir, fname); 1485 fd = open(path, O_RDONLY); 1486 if (fd != -1) { 1487 fname = path; 1488 goto found; 1489 } 1490 } else { 1491 fd = open(fname, O_RDONLY); 1492 if (fd != -1) 1493 goto found; 1494 } 1495 /* look in -I and system include directories. */ 1496 name = Dir_FindFile(fname, parseIncPath); 1497 if (!name) 1498 name = Dir_FindFile(fname, 1499 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1500 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1501 free(name); 1502 free(path); 1503 return(-1); 1504 } 1505 fname = name; 1506 /* 1507 * set the MAKEFILE variable desired by System V fans -- the 1508 * placement of the setting here means it gets set to the last 1509 * makefile specified, as it is set by SysV make. 1510 */ 1511 found: 1512 if (!doing_depend) 1513 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1514 Parse_File(fname, fd); 1515 } 1516 free(path); 1517 return(0); 1518 } 1519 1520 1521 1522 /*- 1523 * Cmd_Exec -- 1524 * Execute the command in cmd, and return the output of that command 1525 * in a string. 1526 * 1527 * Results: 1528 * A string containing the output of the command, or the empty string 1529 * If errnum is not NULL, it contains the reason for the command failure 1530 * 1531 * Side Effects: 1532 * The string must be freed by the caller. 1533 */ 1534 char * 1535 Cmd_Exec(const char *cmd, const char **errnum) 1536 { 1537 const char *args[4]; /* Args for invoking the shell */ 1538 int fds[2]; /* Pipe streams */ 1539 int cpid; /* Child PID */ 1540 int pid; /* PID from wait() */ 1541 char *res; /* result */ 1542 int status; /* command exit status */ 1543 Buffer buf; /* buffer to store the result */ 1544 char *cp; 1545 int cc; /* bytes read, or -1 */ 1546 int savederr; /* saved errno */ 1547 1548 1549 *errnum = NULL; 1550 1551 if (!shellName) 1552 Shell_Init(); 1553 /* 1554 * Set up arguments for shell 1555 */ 1556 args[0] = shellName; 1557 args[1] = "-c"; 1558 args[2] = cmd; 1559 args[3] = NULL; 1560 1561 /* 1562 * Open a pipe for fetching its output 1563 */ 1564 if (pipe(fds) == -1) { 1565 *errnum = "Couldn't create pipe for \"%s\""; 1566 goto bad; 1567 } 1568 1569 /* 1570 * Fork 1571 */ 1572 switch (cpid = vFork()) { 1573 case 0: 1574 /* 1575 * Close input side of pipe 1576 */ 1577 (void)close(fds[0]); 1578 1579 /* 1580 * Duplicate the output stream to the shell's output, then 1581 * shut the extra thing down. Note we don't fetch the error 1582 * stream...why not? Why? 1583 */ 1584 (void)dup2(fds[1], 1); 1585 (void)close(fds[1]); 1586 1587 Var_ExportVars(); 1588 1589 (void)execv(shellPath, UNCONST(args)); 1590 _exit(1); 1591 /*NOTREACHED*/ 1592 1593 case -1: 1594 *errnum = "Couldn't exec \"%s\""; 1595 goto bad; 1596 1597 default: 1598 /* 1599 * No need for the writing half 1600 */ 1601 (void)close(fds[1]); 1602 1603 savederr = 0; 1604 Buf_Init(&buf, 0); 1605 1606 do { 1607 char result[BUFSIZ]; 1608 cc = read(fds[0], result, sizeof(result)); 1609 if (cc > 0) 1610 Buf_AddBytes(&buf, cc, result); 1611 } 1612 while (cc > 0 || (cc == -1 && errno == EINTR)); 1613 if (cc == -1) 1614 savederr = errno; 1615 1616 /* 1617 * Close the input side of the pipe. 1618 */ 1619 (void)close(fds[0]); 1620 1621 /* 1622 * Wait for the process to exit. 1623 */ 1624 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1625 JobReapChild(pid, status, FALSE); 1626 continue; 1627 } 1628 cc = Buf_Size(&buf); 1629 res = Buf_Destroy(&buf, FALSE); 1630 1631 if (savederr != 0) 1632 *errnum = "Couldn't read shell's output for \"%s\""; 1633 1634 if (WIFSIGNALED(status)) 1635 *errnum = "\"%s\" exited on a signal"; 1636 else if (WEXITSTATUS(status) != 0) 1637 *errnum = "\"%s\" returned non-zero status"; 1638 1639 /* 1640 * Null-terminate the result, convert newlines to spaces and 1641 * install it in the variable. 1642 */ 1643 res[cc] = '\0'; 1644 cp = &res[cc]; 1645 1646 if (cc > 0 && *--cp == '\n') { 1647 /* 1648 * A final newline is just stripped 1649 */ 1650 *cp-- = '\0'; 1651 } 1652 while (cp >= res) { 1653 if (*cp == '\n') { 1654 *cp = ' '; 1655 } 1656 cp--; 1657 } 1658 break; 1659 } 1660 return res; 1661 bad: 1662 res = bmake_malloc(1); 1663 *res = '\0'; 1664 return res; 1665 } 1666 1667 /*- 1668 * Error -- 1669 * Print an error message given its format. 1670 * 1671 * Results: 1672 * None. 1673 * 1674 * Side Effects: 1675 * The message is printed. 1676 */ 1677 /* VARARGS */ 1678 void 1679 Error(const char *fmt, ...) 1680 { 1681 va_list ap; 1682 FILE *err_file; 1683 1684 err_file = debug_file; 1685 if (err_file == stdout) 1686 err_file = stderr; 1687 (void)fflush(stdout); 1688 for (;;) { 1689 va_start(ap, fmt); 1690 fprintf(err_file, "%s: ", progname); 1691 (void)vfprintf(err_file, fmt, ap); 1692 va_end(ap); 1693 (void)fprintf(err_file, "\n"); 1694 (void)fflush(err_file); 1695 if (err_file == stderr) 1696 break; 1697 err_file = stderr; 1698 } 1699 } 1700 1701 /*- 1702 * Fatal -- 1703 * Produce a Fatal error message. If jobs are running, waits for them 1704 * to finish. 1705 * 1706 * Results: 1707 * None 1708 * 1709 * Side Effects: 1710 * The program exits 1711 */ 1712 /* VARARGS */ 1713 void 1714 Fatal(const char *fmt, ...) 1715 { 1716 va_list ap; 1717 1718 va_start(ap, fmt); 1719 if (jobsRunning) 1720 Job_Wait(); 1721 1722 (void)fflush(stdout); 1723 (void)vfprintf(stderr, fmt, ap); 1724 va_end(ap); 1725 (void)fprintf(stderr, "\n"); 1726 (void)fflush(stderr); 1727 1728 PrintOnError(NULL, NULL); 1729 1730 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1731 Targ_PrintGraph(2); 1732 Trace_Log(MAKEERROR, 0); 1733 exit(2); /* Not 1 so -q can distinguish error */ 1734 } 1735 1736 /* 1737 * Punt -- 1738 * Major exception once jobs are being created. Kills all jobs, prints 1739 * a message and exits. 1740 * 1741 * Results: 1742 * None 1743 * 1744 * Side Effects: 1745 * All children are killed indiscriminately and the program Lib_Exits 1746 */ 1747 /* VARARGS */ 1748 void 1749 Punt(const char *fmt, ...) 1750 { 1751 va_list ap; 1752 1753 va_start(ap, fmt); 1754 (void)fflush(stdout); 1755 (void)fprintf(stderr, "%s: ", progname); 1756 (void)vfprintf(stderr, fmt, ap); 1757 va_end(ap); 1758 (void)fprintf(stderr, "\n"); 1759 (void)fflush(stderr); 1760 1761 PrintOnError(NULL, NULL); 1762 1763 DieHorribly(); 1764 } 1765 1766 /*- 1767 * DieHorribly -- 1768 * Exit without giving a message. 1769 * 1770 * Results: 1771 * None 1772 * 1773 * Side Effects: 1774 * A big one... 1775 */ 1776 void 1777 DieHorribly(void) 1778 { 1779 if (jobsRunning) 1780 Job_AbortAll(); 1781 if (DEBUG(GRAPH2)) 1782 Targ_PrintGraph(2); 1783 Trace_Log(MAKEERROR, 0); 1784 exit(2); /* Not 1, so -q can distinguish error */ 1785 } 1786 1787 /* 1788 * Finish -- 1789 * Called when aborting due to errors in child shell to signal 1790 * abnormal exit. 1791 * 1792 * Results: 1793 * None 1794 * 1795 * Side Effects: 1796 * The program exits 1797 */ 1798 void 1799 Finish(int errors) 1800 /* number of errors encountered in Make_Make */ 1801 { 1802 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1803 } 1804 1805 /* 1806 * eunlink -- 1807 * Remove a file carefully, avoiding directories. 1808 */ 1809 int 1810 eunlink(const char *file) 1811 { 1812 struct stat st; 1813 1814 if (lstat(file, &st) == -1) 1815 return -1; 1816 1817 if (S_ISDIR(st.st_mode)) { 1818 errno = EISDIR; 1819 return -1; 1820 } 1821 return unlink(file); 1822 } 1823 1824 /* 1825 * execError -- 1826 * Print why exec failed, avoiding stdio. 1827 */ 1828 void 1829 execError(const char *af, const char *av) 1830 { 1831 #ifdef USE_IOVEC 1832 int i = 0; 1833 struct iovec iov[8]; 1834 #define IOADD(s) \ 1835 (void)(iov[i].iov_base = UNCONST(s), \ 1836 iov[i].iov_len = strlen(iov[i].iov_base), \ 1837 i++) 1838 #else 1839 #define IOADD(void)write(2, s, strlen(s)) 1840 #endif 1841 1842 IOADD(progname); 1843 IOADD(": "); 1844 IOADD(af); 1845 IOADD("("); 1846 IOADD(av); 1847 IOADD(") failed ("); 1848 IOADD(strerror(errno)); 1849 IOADD(")\n"); 1850 1851 #ifdef USE_IOVEC 1852 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1853 continue; 1854 #endif 1855 } 1856 1857 /* 1858 * usage -- 1859 * exit with usage message 1860 */ 1861 static void 1862 usage(void) 1863 { 1864 char *p; 1865 if ((p = strchr(progname, '[')) != NULL) 1866 *p = '\0'; 1867 1868 (void)fprintf(stderr, 1869 "usage: %s [-BeikNnqrstWwX] \n\ 1870 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1871 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1872 [-V variable] [variable=value] [target ...]\n", progname); 1873 exit(2); 1874 } 1875 1876 1877 /* 1878 * realpath(3) can get expensive, cache results... 1879 */ 1880 char * 1881 cached_realpath(const char *pathname, char *resolved) 1882 { 1883 static GNode *cache; 1884 char *rp, *cp; 1885 1886 if (!pathname || !pathname[0]) 1887 return NULL; 1888 1889 if (!cache) { 1890 cache = Targ_NewGN("Realpath"); 1891 #ifndef DEBUG_REALPATH_CACHE 1892 cache->flags = INTERNAL; 1893 #endif 1894 } 1895 if (resolved == NULL && strcmp(pathname, ".OBJDIR") == 0) { 1896 /* purge any relative paths */ 1897 Hash_Entry *he, *nhe; 1898 Hash_Search hs; 1899 1900 he = Hash_EnumFirst(&cache->context, &hs); 1901 while (he) { 1902 nhe = Hash_EnumNext(&hs); 1903 if (he->name[0] != '/') { 1904 if (DEBUG(DIR)) 1905 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1906 Hash_DeleteEntry(&cache->context, he); 1907 } 1908 he = nhe; 1909 } 1910 return NULL; 1911 } 1912 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1913 /* a hit */ 1914 strncpy(resolved, rp, MAXPATHLEN); 1915 resolved[MAXPATHLEN - 1] = '\0'; 1916 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1917 Var_Set(pathname, rp, cache, 0); 1918 } /* else should we negative-cache? */ 1919 1920 free(cp); 1921 return rp ? resolved : NULL; 1922 } 1923 1924 int 1925 PrintAddr(void *a, void *b) 1926 { 1927 printf("%lx ", (unsigned long) a); 1928 return b ? 0 : 0; 1929 } 1930 1931 1932 static int 1933 addErrorCMD(void *cmdp, void *gnp) 1934 { 1935 if (cmdp == NULL) 1936 return 1; /* stop */ 1937 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1938 return 0; 1939 } 1940 1941 void 1942 PrintOnError(GNode *gn, const char *s) 1943 { 1944 static GNode *en = NULL; 1945 char tmp[64]; 1946 char *cp; 1947 1948 if (s) 1949 printf("%s", s); 1950 1951 printf("\n%s: stopped in %s\n", progname, curdir); 1952 1953 if (en) 1954 return; /* we've been here! */ 1955 if (gn) { 1956 /* 1957 * We can print this even if there is no .ERROR target. 1958 */ 1959 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1960 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 1961 Lst_ForEach(gn->commands, addErrorCMD, gn); 1962 } 1963 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1964 sizeof(tmp) - 1); 1965 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 1966 if (cp) { 1967 if (*cp) 1968 printf("%s", cp); 1969 free(cp); 1970 } 1971 fflush(stdout); 1972 1973 /* 1974 * Finally, see if there is a .ERROR target, and run it if so. 1975 */ 1976 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1977 if (en) { 1978 en->type |= OP_SPECIAL; 1979 Compat_Make(en, en); 1980 } 1981 } 1982 1983 void 1984 Main_ExportMAKEFLAGS(Boolean first) 1985 { 1986 static int once = 1; 1987 char tmp[64]; 1988 char *s; 1989 1990 if (once != first) 1991 return; 1992 once = 0; 1993 1994 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1995 sizeof(tmp)); 1996 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 1997 if (s && *s) { 1998 #ifdef POSIX 1999 setenv("MAKEFLAGS", s, 1); 2000 #else 2001 setenv("MAKE", s, 1); 2002 #endif 2003 } 2004 } 2005 2006 char * 2007 getTmpdir(void) 2008 { 2009 static char *tmpdir = NULL; 2010 2011 if (!tmpdir) { 2012 struct stat st; 2013 2014 /* 2015 * Honor $TMPDIR but only if it is valid. 2016 * Ensure it ends with /. 2017 */ 2018 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2019 VARF_WANTRES); 2020 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2021 free(tmpdir); 2022 tmpdir = bmake_strdup(_PATH_TMP); 2023 } 2024 } 2025 return tmpdir; 2026 } 2027 2028 /* 2029 * Create and open a temp file using "pattern". 2030 * If "fnamep" is provided set it to a copy of the filename created. 2031 * Otherwise unlink the file once open. 2032 */ 2033 int 2034 mkTempFile(const char *pattern, char **fnamep) 2035 { 2036 static char *tmpdir = NULL; 2037 char tfile[MAXPATHLEN]; 2038 int fd; 2039 2040 if (!pattern) 2041 pattern = TMPPAT; 2042 if (!tmpdir) 2043 tmpdir = getTmpdir(); 2044 if (pattern[0] == '/') { 2045 snprintf(tfile, sizeof(tfile), "%s", pattern); 2046 } else { 2047 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2048 } 2049 if ((fd = mkstemp(tfile)) < 0) 2050 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2051 if (fnamep) { 2052 *fnamep = bmake_strdup(tfile); 2053 } else { 2054 unlink(tfile); /* we just want the descriptor */ 2055 } 2056 return fd; 2057 } 2058 2059 /* 2060 * Convert a string representation of a boolean. 2061 * Anything that looks like "No", "False", "Off", "0" etc, 2062 * is FALSE, otherwise TRUE. 2063 */ 2064 Boolean 2065 s2Boolean(const char *s, Boolean bf) 2066 { 2067 if (s) { 2068 switch(*s) { 2069 case '\0': /* not set - the default wins */ 2070 break; 2071 case '0': 2072 case 'F': 2073 case 'f': 2074 case 'N': 2075 case 'n': 2076 bf = FALSE; 2077 break; 2078 case 'O': 2079 case 'o': 2080 switch (s[1]) { 2081 case 'F': 2082 case 'f': 2083 bf = FALSE; 2084 break; 2085 default: 2086 bf = TRUE; 2087 break; 2088 } 2089 break; 2090 default: 2091 bf = TRUE; 2092 break; 2093 } 2094 } 2095 return (bf); 2096 } 2097 2098 /* 2099 * Return a Boolean based on setting of a knob. 2100 * 2101 * If the knob is not set, the supplied default is the return value. 2102 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2103 * is FALSE, otherwise TRUE. 2104 */ 2105 Boolean 2106 getBoolean(const char *name, Boolean bf) 2107 { 2108 char tmp[64]; 2109 char *cp; 2110 2111 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2112 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2113 2114 if (cp) { 2115 bf = s2Boolean(cp, bf); 2116 free(cp); 2117 } 2118 } 2119 return (bf); 2120 } 2121
Indexes created Mon Sep 22 13:09:51 GMT 2025