main.c revision 1.237
1 /* $NetBSD: main.c,v 1.237 2016/01/17 15:32:38 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.237 2016/01/17 15:32:38 christos Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.237 2016/01/17 15:32:38 christos Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and optional arguments 103 * for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and arguments for it. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and arguments for it. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/stat.h> 121 #ifdef MAKE_NATIVE 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <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 if (p1) 668 free(p1); 669 670 argv = brk_string(buf, &argc, TRUE, &args); 671 if (argv == NULL) { 672 Error("Unterminated quoted string [%s]", buf); 673 free(buf); 674 return; 675 } 676 free(buf); 677 MainParseArgs(argc, argv); 678 679 free(args); 680 free(argv); 681 } 682 683 Boolean 684 Main_SetObjdir(const char *path) 685 { 686 struct stat sb; 687 char *p = NULL; 688 char buf[MAXPATHLEN + 1]; 689 Boolean rc = FALSE; 690 691 /* expand variable substitutions */ 692 if (strchr(path, '$') != 0) { 693 snprintf(buf, MAXPATHLEN, "%s", path); 694 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, FALSE, TRUE, FALSE); 695 } 696 697 if (path[0] != '/') { 698 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 699 path = buf; 700 } 701 702 /* look for the directory and try to chdir there */ 703 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 704 if (chdir(path)) { 705 (void)fprintf(stderr, "make warning: %s: %s.\n", 706 path, strerror(errno)); 707 } else { 708 strncpy(objdir, path, MAXPATHLEN); 709 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 710 setenv("PWD", objdir, 1); 711 Dir_InitDot(); 712 rc = TRUE; 713 if (enterFlag && strcmp(objdir, curdir) != 0) 714 enterFlagObj = TRUE; 715 } 716 } 717 718 if (p) 719 free(p); 720 return rc; 721 } 722 723 /*- 724 * ReadAllMakefiles -- 725 * wrapper around ReadMakefile() to read all. 726 * 727 * Results: 728 * TRUE if ok, FALSE on error 729 */ 730 static int 731 ReadAllMakefiles(const void *p, const void *q) 732 { 733 return (ReadMakefile(p, q) == 0); 734 } 735 736 int 737 str2Lst_Append(Lst lp, char *str, const char *sep) 738 { 739 char *cp; 740 int n; 741 742 if (!sep) 743 sep = " \t"; 744 745 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 746 (void)Lst_AtEnd(lp, cp); 747 n++; 748 } 749 return (n); 750 } 751 752 #ifdef SIGINFO 753 /*ARGSUSED*/ 754 static void 755 siginfo(int signo MAKE_ATTR_UNUSED) 756 { 757 char dir[MAXPATHLEN]; 758 char str[2 * MAXPATHLEN]; 759 int len; 760 if (getcwd(dir, sizeof(dir)) == NULL) 761 return; 762 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 763 if (len > 0) 764 (void)write(STDERR_FILENO, str, (size_t)len); 765 } 766 #endif 767 768 /* 769 * Allow makefiles some control over the mode we run in. 770 */ 771 void 772 MakeMode(const char *mode) 773 { 774 char *mp = NULL; 775 776 if (!mode) 777 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 778 VAR_GLOBAL, FALSE, TRUE, FALSE); 779 780 if (mode && *mode) { 781 if (strstr(mode, "compat")) { 782 compatMake = TRUE; 783 forceJobs = FALSE; 784 } 785 #if USE_META 786 if (strstr(mode, "meta")) 787 meta_mode_init(mode); 788 #endif 789 } 790 if (mp) 791 free(mp); 792 } 793 794 /*- 795 * main -- 796 * The main function, for obvious reasons. Initializes variables 797 * and a few modules, then parses the arguments give it in the 798 * environment and on the command line. Reads the system makefile 799 * followed by either Makefile, makefile or the file given by the 800 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 801 * flags it has received by then uses either the Make or the Compat 802 * module to create the initial list of targets. 803 * 804 * Results: 805 * If -q was given, exits -1 if anything was out-of-date. Else it exits 806 * 0. 807 * 808 * Side Effects: 809 * The program exits when done. Targets are created. etc. etc. etc. 810 */ 811 int 812 main(int argc, char **argv) 813 { 814 Lst targs; /* target nodes to create -- passed to Make_Init */ 815 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 816 struct stat sb, sa; 817 char *p1, *path; 818 char mdpath[MAXPATHLEN]; 819 const char *machine = getenv("MACHINE"); 820 const char *machine_arch = getenv("MACHINE_ARCH"); 821 char *syspath = getenv("MAKESYSPATH"); 822 Lst sysMkPath; /* Path of sys.mk */ 823 char *cp = NULL, *start; 824 /* avoid faults on read-only strings */ 825 static char defsyspath[] = _PATH_DEFSYSPATH; 826 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 827 struct timeval rightnow; /* to initialize random seed */ 828 struct utsname utsname; 829 830 /* default to writing debug to stderr */ 831 debug_file = stderr; 832 833 #ifdef SIGINFO 834 (void)bmake_signal(SIGINFO, siginfo); 835 #endif 836 /* 837 * Set the seed to produce a different random sequence 838 * on each program execution. 839 */ 840 gettimeofday(&rightnow, NULL); 841 srandom(rightnow.tv_sec + rightnow.tv_usec); 842 843 if ((progname = strrchr(argv[0], '/')) != NULL) 844 progname++; 845 else 846 progname = argv[0]; 847 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 848 /* 849 * get rid of resource limit on file descriptors 850 */ 851 { 852 struct rlimit rl; 853 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 854 rl.rlim_cur != rl.rlim_max) { 855 rl.rlim_cur = rl.rlim_max; 856 (void)setrlimit(RLIMIT_NOFILE, &rl); 857 } 858 } 859 #endif 860 861 if (uname(&utsname) == -1) { 862 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 863 strerror(errno)); 864 exit(2); 865 } 866 867 /* 868 * Get the name of this type of MACHINE from utsname 869 * so we can share an executable for similar machines. 870 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 871 * 872 * Note that both MACHINE and MACHINE_ARCH are decided at 873 * run-time. 874 */ 875 if (!machine) { 876 #ifdef MAKE_NATIVE 877 machine = utsname.machine; 878 #else 879 #ifdef MAKE_MACHINE 880 machine = MAKE_MACHINE; 881 #else 882 machine = "unknown"; 883 #endif 884 #endif 885 } 886 887 if (!machine_arch) { 888 #ifdef MAKE_NATIVE 889 static char machine_arch_buf[sizeof(utsname.machine)]; 890 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 891 size_t len = sizeof(machine_arch_buf); 892 893 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 894 &len, NULL, 0) < 0) { 895 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 896 strerror(errno)); 897 exit(2); 898 } 899 900 machine_arch = machine_arch_buf; 901 #else 902 #ifndef MACHINE_ARCH 903 #ifdef MAKE_MACHINE_ARCH 904 machine_arch = MAKE_MACHINE_ARCH; 905 #else 906 machine_arch = "unknown"; 907 #endif 908 #else 909 machine_arch = MACHINE_ARCH; 910 #endif 911 #endif 912 } 913 914 myPid = getpid(); /* remember this for vFork() */ 915 916 /* 917 * Just in case MAKEOBJDIR wants us to do something tricky. 918 */ 919 Var_Init(); /* Initialize the lists of variables for 920 * parsing arguments */ 921 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 922 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 923 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 924 #ifdef MAKE_VERSION 925 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 926 #endif 927 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 928 /* 929 * This is the traditional preference for makefiles. 930 */ 931 #ifndef MAKEFILE_PREFERENCE_LIST 932 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 933 #endif 934 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 935 VAR_GLOBAL, 0); 936 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 937 938 create = Lst_Init(FALSE); 939 makefiles = Lst_Init(FALSE); 940 printVars = FALSE; 941 debugVflag = FALSE; 942 variables = Lst_Init(FALSE); 943 beSilent = FALSE; /* Print commands as executed */ 944 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 945 noExecute = FALSE; /* Execute all commands */ 946 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 947 keepgoing = FALSE; /* Stop on error */ 948 allPrecious = FALSE; /* Remove targets when interrupted */ 949 queryFlag = FALSE; /* This is not just a check-run */ 950 noBuiltins = FALSE; /* Read the built-in rules */ 951 touchFlag = FALSE; /* Actually update targets */ 952 debug = 0; /* No debug verbosity, please. */ 953 jobsRunning = FALSE; 954 955 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 956 maxJobTokens = maxJobs; 957 compatMake = FALSE; /* No compat mode */ 958 ignorePWD = FALSE; 959 960 /* 961 * Initialize the parsing, directory and variable modules to prepare 962 * for the reading of inclusion paths and variable settings on the 963 * command line 964 */ 965 966 /* 967 * Initialize various variables. 968 * MAKE also gets this name, for compatibility 969 * .MAKEFLAGS gets set to the empty string just in case. 970 * MFLAGS also gets initialized empty, for compatibility. 971 */ 972 Parse_Init(); 973 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 974 /* 975 * Leave alone if it is an absolute path, or if it does 976 * not contain a '/' in which case we need to find it in 977 * the path, like execvp(3) and the shells do. 978 */ 979 p1 = argv[0]; 980 } else { 981 /* 982 * A relative path, canonicalize it. 983 */ 984 p1 = realpath(argv[0], mdpath); 985 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 986 p1 = argv[0]; /* realpath failed */ 987 } 988 } 989 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 990 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 991 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 992 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 993 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 994 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 995 /* some makefiles need to know this */ 996 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 997 998 /* 999 * Set some other useful macros 1000 */ 1001 { 1002 char tmp[64], *ep; 1003 1004 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1005 if (makelevel < 0) 1006 makelevel = 0; 1007 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1008 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1009 snprintf(tmp, sizeof(tmp), "%u", myPid); 1010 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1011 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1012 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1013 } 1014 if (makelevel > 0) { 1015 char pn[1024]; 1016 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1017 progname = bmake_strdup(pn); 1018 } 1019 1020 #ifdef USE_META 1021 meta_init(); 1022 #endif 1023 /* 1024 * First snag any flags out of the MAKE environment variable. 1025 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1026 * in a different format). 1027 */ 1028 #ifdef POSIX 1029 p1 = explode(getenv("MAKEFLAGS")); 1030 Main_ParseArgLine(p1); 1031 free(p1); 1032 #else 1033 Main_ParseArgLine(getenv("MAKE")); 1034 #endif 1035 1036 /* 1037 * Find where we are (now). 1038 * We take care of PWD for the automounter below... 1039 */ 1040 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1041 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1042 progname, strerror(errno)); 1043 exit(2); 1044 } 1045 1046 MainParseArgs(argc, argv); 1047 1048 if (enterFlag) 1049 printf("%s: Entering directory `%s'\n", progname, curdir); 1050 1051 /* 1052 * Verify that cwd is sane. 1053 */ 1054 if (stat(curdir, &sa) == -1) { 1055 (void)fprintf(stderr, "%s: %s: %s.\n", 1056 progname, curdir, strerror(errno)); 1057 exit(2); 1058 } 1059 1060 /* 1061 * All this code is so that we know where we are when we start up 1062 * on a different machine with pmake. 1063 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1064 * since the value of curdir can vary depending on how we got 1065 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1066 * or via subdir.mk in which case its likely a shell which does 1067 * not provide it. 1068 * So, to stop it breaking this case only, we ignore PWD if 1069 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1070 */ 1071 #ifndef NO_PWD_OVERRIDE 1072 if (!ignorePWD) { 1073 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1074 1075 if ((pwd = getenv("PWD")) != NULL && 1076 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1077 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1078 VAR_CMD, &ptmp2); 1079 1080 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1081 if (stat(pwd, &sb) == 0 && 1082 sa.st_ino == sb.st_ino && 1083 sa.st_dev == sb.st_dev) 1084 (void)strncpy(curdir, pwd, MAXPATHLEN); 1085 } 1086 } 1087 free(ptmp1); 1088 free(ptmp2); 1089 } 1090 #endif 1091 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1092 1093 /* 1094 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1095 * MAKEOBJDIR is set in the environment, try only that value 1096 * and fall back to .CURDIR if it does not exist. 1097 * 1098 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1099 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1100 * of these paths exist, just use .CURDIR. 1101 */ 1102 Dir_Init(curdir); 1103 (void)Main_SetObjdir(curdir); 1104 1105 if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) { 1106 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1107 (void)Main_SetObjdir(mdpath); 1108 free(p1); 1109 } else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) { 1110 (void)Main_SetObjdir(path); 1111 free(p1); 1112 } else { 1113 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1114 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1115 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1116 _PATH_OBJDIRPREFIX, curdir); 1117 (void)Main_SetObjdir(mdpath); 1118 } 1119 } 1120 1121 /* 1122 * Be compatible if user did not specify -j and did not explicitly 1123 * turned compatibility on 1124 */ 1125 if (!compatMake && !forceJobs) { 1126 compatMake = TRUE; 1127 } 1128 1129 /* 1130 * Initialize archive, target and suffix modules in preparation for 1131 * parsing the makefile(s) 1132 */ 1133 Arch_Init(); 1134 Targ_Init(); 1135 Suff_Init(); 1136 Trace_Init(tracefile); 1137 1138 DEFAULT = NULL; 1139 (void)time(&now); 1140 1141 Trace_Log(MAKESTART, NULL); 1142 1143 /* 1144 * Set up the .TARGETS variable to contain the list of targets to be 1145 * created. If none specified, make the variable empty -- the parser 1146 * will fill the thing in with the default or .MAIN target. 1147 */ 1148 if (!Lst_IsEmpty(create)) { 1149 LstNode ln; 1150 1151 for (ln = Lst_First(create); ln != NULL; 1152 ln = Lst_Succ(ln)) { 1153 char *name = (char *)Lst_Datum(ln); 1154 1155 Var_Append(".TARGETS", name, VAR_GLOBAL); 1156 } 1157 } else 1158 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1159 1160 1161 /* 1162 * If no user-supplied system path was given (through the -m option) 1163 * add the directories from the DEFSYSPATH (more than one may be given 1164 * as dir1:...:dirn) to the system include path. 1165 */ 1166 if (syspath == NULL || *syspath == '\0') 1167 syspath = defsyspath; 1168 else 1169 syspath = bmake_strdup(syspath); 1170 1171 for (start = syspath; *start != '\0'; start = cp) { 1172 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1173 continue; 1174 if (*cp == ':') { 1175 *cp++ = '\0'; 1176 } 1177 /* look for magic parent directory search string */ 1178 if (strncmp(".../", start, 4) != 0) { 1179 (void)Dir_AddDir(defIncPath, start); 1180 } else { 1181 if (Dir_FindHereOrAbove(curdir, start+4, 1182 found_path, sizeof(found_path))) { 1183 (void)Dir_AddDir(defIncPath, found_path); 1184 } 1185 } 1186 } 1187 if (syspath != defsyspath) 1188 free(syspath); 1189 1190 /* 1191 * Read in the built-in rules first, followed by the specified 1192 * makefile, if it was (makefile != NULL), or the default 1193 * makefile and Makefile, in that order, if it wasn't. 1194 */ 1195 if (!noBuiltins) { 1196 LstNode ln; 1197 1198 sysMkPath = Lst_Init(FALSE); 1199 Dir_Expand(_PATH_DEFSYSMK, 1200 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1201 sysMkPath); 1202 if (Lst_IsEmpty(sysMkPath)) 1203 Fatal("%s: no system rules (%s).", progname, 1204 _PATH_DEFSYSMK); 1205 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1206 if (ln == NULL) 1207 Fatal("%s: cannot open %s.", progname, 1208 (char *)Lst_Datum(ln)); 1209 } 1210 1211 if (!Lst_IsEmpty(makefiles)) { 1212 LstNode ln; 1213 1214 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1215 if (ln != NULL) 1216 Fatal("%s: cannot open %s.", progname, 1217 (char *)Lst_Datum(ln)); 1218 } else { 1219 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1220 VAR_CMD, FALSE, TRUE, FALSE); 1221 if (p1) { 1222 (void)str2Lst_Append(makefiles, p1, NULL); 1223 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1224 free(p1); 1225 } 1226 } 1227 1228 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1229 if (!noBuiltins || !printVars) { 1230 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1231 VAR_CMD, FALSE, TRUE, FALSE); 1232 doing_depend = TRUE; 1233 (void)ReadMakefile(makeDependfile, NULL); 1234 doing_depend = FALSE; 1235 } 1236 1237 if (enterFlagObj) 1238 printf("%s: Entering directory `%s'\n", progname, objdir); 1239 1240 MakeMode(NULL); 1241 1242 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1243 if (p1) 1244 free(p1); 1245 1246 if (!compatMake) 1247 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1248 if (DEBUG(JOB)) 1249 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1250 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1251 1252 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1253 1254 1255 /* 1256 * For compatibility, look at the directories in the VPATH variable 1257 * and add them to the search path, if the variable is defined. The 1258 * variable's value is in the same format as the PATH envariable, i.e. 1259 * <directory>:<directory>:<directory>... 1260 */ 1261 if (Var_Exists("VPATH", VAR_CMD)) { 1262 char *vpath, savec; 1263 /* 1264 * GCC stores string constants in read-only memory, but 1265 * Var_Subst will want to write this thing, so store it 1266 * in an array 1267 */ 1268 static char VPATH[] = "${VPATH}"; 1269 1270 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE, TRUE, FALSE); 1271 path = vpath; 1272 do { 1273 /* skip to end of directory */ 1274 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1275 continue; 1276 /* Save terminator character so know when to stop */ 1277 savec = *cp; 1278 *cp = '\0'; 1279 /* Add directory to search path */ 1280 (void)Dir_AddDir(dirSearchPath, path); 1281 *cp = savec; 1282 path = cp + 1; 1283 } while (savec == ':'); 1284 free(vpath); 1285 } 1286 1287 /* 1288 * Now that all search paths have been read for suffixes et al, it's 1289 * time to add the default search path to their lists... 1290 */ 1291 Suff_DoPaths(); 1292 1293 /* 1294 * Propagate attributes through :: dependency lists. 1295 */ 1296 Targ_Propagate(); 1297 1298 /* print the initial graph, if the user requested it */ 1299 if (DEBUG(GRAPH1)) 1300 Targ_PrintGraph(1); 1301 1302 /* print the values of any variables requested by the user */ 1303 if (printVars) { 1304 LstNode ln; 1305 Boolean expandVars; 1306 1307 if (debugVflag) 1308 expandVars = FALSE; 1309 else 1310 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1311 for (ln = Lst_First(variables); ln != NULL; 1312 ln = Lst_Succ(ln)) { 1313 char *var = (char *)Lst_Datum(ln); 1314 char *value; 1315 1316 if (strchr(var, '$')) { 1317 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1318 FALSE, TRUE, FALSE); 1319 } else if (expandVars) { 1320 char tmp[128]; 1321 1322 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1323 Fatal("%s: variable name too big: %s", 1324 progname, var); 1325 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1326 FALSE, TRUE, FALSE); 1327 } else { 1328 value = Var_Value(var, VAR_GLOBAL, &p1); 1329 } 1330 printf("%s\n", value ? value : ""); 1331 if (p1) 1332 free(p1); 1333 } 1334 } else { 1335 /* 1336 * Have now read the entire graph and need to make a list of 1337 * targets to create. If none was given on the command line, 1338 * we consult the parsing module to find the main target(s) 1339 * to create. 1340 */ 1341 if (Lst_IsEmpty(create)) 1342 targs = Parse_MainName(); 1343 else 1344 targs = Targ_FindList(create, TARG_CREATE); 1345 1346 if (!compatMake) { 1347 /* 1348 * Initialize job module before traversing the graph 1349 * now that any .BEGIN and .END targets have been read. 1350 * This is done only if the -q flag wasn't given 1351 * (to prevent the .BEGIN from being executed should 1352 * it exist). 1353 */ 1354 if (!queryFlag) { 1355 Job_Init(); 1356 jobsRunning = TRUE; 1357 } 1358 1359 /* Traverse the graph, checking on all the targets */ 1360 outOfDate = Make_Run(targs); 1361 } else { 1362 /* 1363 * Compat_Init will take care of creating all the 1364 * targets as well as initializing the module. 1365 */ 1366 Compat_Run(targs); 1367 } 1368 } 1369 1370 #ifdef CLEANUP 1371 Lst_Destroy(targs, NULL); 1372 Lst_Destroy(variables, NULL); 1373 Lst_Destroy(makefiles, NULL); 1374 Lst_Destroy(create, (FreeProc *)free); 1375 #endif 1376 1377 /* print the graph now it's been processed if the user requested it */ 1378 if (DEBUG(GRAPH2)) 1379 Targ_PrintGraph(2); 1380 1381 Trace_Log(MAKEEND, 0); 1382 1383 if (enterFlagObj) 1384 printf("%s: Leaving directory `%s'\n", progname, objdir); 1385 if (enterFlag) 1386 printf("%s: Leaving directory `%s'\n", progname, curdir); 1387 1388 Suff_End(); 1389 Targ_End(); 1390 Arch_End(); 1391 Var_End(); 1392 Parse_End(); 1393 Dir_End(); 1394 Job_End(); 1395 Trace_End(); 1396 1397 return outOfDate ? 1 : 0; 1398 } 1399 1400 /*- 1401 * ReadMakefile -- 1402 * Open and parse the given makefile. 1403 * 1404 * Results: 1405 * 0 if ok. -1 if couldn't open file. 1406 * 1407 * Side Effects: 1408 * lots 1409 */ 1410 static int 1411 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1412 { 1413 const char *fname = p; /* makefile to read */ 1414 int fd; 1415 size_t len = MAXPATHLEN; 1416 char *name, *path = bmake_malloc(len); 1417 1418 if (!strcmp(fname, "-")) { 1419 Parse_File(NULL /*stdin*/, -1); 1420 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1421 } else { 1422 /* if we've chdir'd, rebuild the path name */ 1423 if (strcmp(curdir, objdir) && *fname != '/') { 1424 size_t plen = strlen(curdir) + strlen(fname) + 2; 1425 if (len < plen) 1426 path = bmake_realloc(path, len = 2 * plen); 1427 1428 (void)snprintf(path, len, "%s/%s", curdir, fname); 1429 fd = open(path, O_RDONLY); 1430 if (fd != -1) { 1431 fname = path; 1432 goto found; 1433 } 1434 1435 /* If curdir failed, try objdir (ala .depend) */ 1436 plen = strlen(objdir) + strlen(fname) + 2; 1437 if (len < plen) 1438 path = bmake_realloc(path, len = 2 * plen); 1439 (void)snprintf(path, len, "%s/%s", objdir, fname); 1440 fd = open(path, O_RDONLY); 1441 if (fd != -1) { 1442 fname = path; 1443 goto found; 1444 } 1445 } else { 1446 fd = open(fname, O_RDONLY); 1447 if (fd != -1) 1448 goto found; 1449 } 1450 /* look in -I and system include directories. */ 1451 name = Dir_FindFile(fname, parseIncPath); 1452 if (!name) 1453 name = Dir_FindFile(fname, 1454 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1455 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1456 if (name) 1457 free(name); 1458 free(path); 1459 return(-1); 1460 } 1461 fname = name; 1462 /* 1463 * set the MAKEFILE variable desired by System V fans -- the 1464 * placement of the setting here means it gets set to the last 1465 * makefile specified, as it is set by SysV make. 1466 */ 1467 found: 1468 if (!doing_depend) 1469 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1470 Parse_File(fname, fd); 1471 } 1472 free(path); 1473 return(0); 1474 } 1475 1476 1477 1478 /*- 1479 * Cmd_Exec -- 1480 * Execute the command in cmd, and return the output of that command 1481 * in a string. 1482 * 1483 * Results: 1484 * A string containing the output of the command, or the empty string 1485 * If errnum is not NULL, it contains the reason for the command failure 1486 * 1487 * Side Effects: 1488 * The string must be freed by the caller. 1489 */ 1490 char * 1491 Cmd_Exec(const char *cmd, const char **errnum) 1492 { 1493 const char *args[4]; /* Args for invoking the shell */ 1494 int fds[2]; /* Pipe streams */ 1495 int cpid; /* Child PID */ 1496 int pid; /* PID from wait() */ 1497 char *res; /* result */ 1498 int status; /* command exit status */ 1499 Buffer buf; /* buffer to store the result */ 1500 char *cp; 1501 int cc; /* bytes read, or -1 */ 1502 int savederr; /* saved errno */ 1503 1504 1505 *errnum = NULL; 1506 1507 if (!shellName) 1508 Shell_Init(); 1509 /* 1510 * Set up arguments for shell 1511 */ 1512 args[0] = shellName; 1513 args[1] = "-c"; 1514 args[2] = cmd; 1515 args[3] = NULL; 1516 1517 /* 1518 * Open a pipe for fetching its output 1519 */ 1520 if (pipe(fds) == -1) { 1521 *errnum = "Couldn't create pipe for \"%s\""; 1522 goto bad; 1523 } 1524 1525 /* 1526 * Fork 1527 */ 1528 switch (cpid = vFork()) { 1529 case 0: 1530 /* 1531 * Close input side of pipe 1532 */ 1533 (void)close(fds[0]); 1534 1535 /* 1536 * Duplicate the output stream to the shell's output, then 1537 * shut the extra thing down. Note we don't fetch the error 1538 * stream...why not? Why? 1539 */ 1540 (void)dup2(fds[1], 1); 1541 (void)close(fds[1]); 1542 1543 Var_ExportVars(); 1544 1545 (void)execv(shellPath, UNCONST(args)); 1546 _exit(1); 1547 /*NOTREACHED*/ 1548 1549 case -1: 1550 *errnum = "Couldn't exec \"%s\""; 1551 goto bad; 1552 1553 default: 1554 /* 1555 * No need for the writing half 1556 */ 1557 (void)close(fds[1]); 1558 1559 savederr = 0; 1560 Buf_Init(&buf, 0); 1561 1562 do { 1563 char result[BUFSIZ]; 1564 cc = read(fds[0], result, sizeof(result)); 1565 if (cc > 0) 1566 Buf_AddBytes(&buf, cc, result); 1567 } 1568 while (cc > 0 || (cc == -1 && errno == EINTR)); 1569 if (cc == -1) 1570 savederr = errno; 1571 1572 /* 1573 * Close the input side of the pipe. 1574 */ 1575 (void)close(fds[0]); 1576 1577 /* 1578 * Wait for the process to exit. 1579 */ 1580 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1581 JobReapChild(pid, status, FALSE); 1582 continue; 1583 } 1584 cc = Buf_Size(&buf); 1585 res = Buf_Destroy(&buf, FALSE); 1586 1587 if (savederr != 0) 1588 *errnum = "Couldn't read shell's output for \"%s\""; 1589 1590 if (WIFSIGNALED(status)) 1591 *errnum = "\"%s\" exited on a signal"; 1592 else if (WEXITSTATUS(status) != 0) 1593 *errnum = "\"%s\" returned non-zero status"; 1594 1595 /* 1596 * Null-terminate the result, convert newlines to spaces and 1597 * install it in the variable. 1598 */ 1599 res[cc] = '\0'; 1600 cp = &res[cc]; 1601 1602 if (cc > 0 && *--cp == '\n') { 1603 /* 1604 * A final newline is just stripped 1605 */ 1606 *cp-- = '\0'; 1607 } 1608 while (cp >= res) { 1609 if (*cp == '\n') { 1610 *cp = ' '; 1611 } 1612 cp--; 1613 } 1614 break; 1615 } 1616 return res; 1617 bad: 1618 res = bmake_malloc(1); 1619 *res = '\0'; 1620 return res; 1621 } 1622 1623 /*- 1624 * Error -- 1625 * Print an error message given its format. 1626 * 1627 * Results: 1628 * None. 1629 * 1630 * Side Effects: 1631 * The message is printed. 1632 */ 1633 /* VARARGS */ 1634 void 1635 Error(const char *fmt, ...) 1636 { 1637 va_list ap; 1638 FILE *err_file; 1639 1640 err_file = debug_file; 1641 if (err_file == stdout) 1642 err_file = stderr; 1643 (void)fflush(stdout); 1644 for (;;) { 1645 va_start(ap, fmt); 1646 fprintf(err_file, "%s: ", progname); 1647 (void)vfprintf(err_file, fmt, ap); 1648 va_end(ap); 1649 (void)fprintf(err_file, "\n"); 1650 (void)fflush(err_file); 1651 if (err_file == stderr) 1652 break; 1653 err_file = stderr; 1654 } 1655 } 1656 1657 /*- 1658 * Fatal -- 1659 * Produce a Fatal error message. If jobs are running, waits for them 1660 * to finish. 1661 * 1662 * Results: 1663 * None 1664 * 1665 * Side Effects: 1666 * The program exits 1667 */ 1668 /* VARARGS */ 1669 void 1670 Fatal(const char *fmt, ...) 1671 { 1672 va_list ap; 1673 1674 va_start(ap, fmt); 1675 if (jobsRunning) 1676 Job_Wait(); 1677 1678 (void)fflush(stdout); 1679 (void)vfprintf(stderr, fmt, ap); 1680 va_end(ap); 1681 (void)fprintf(stderr, "\n"); 1682 (void)fflush(stderr); 1683 1684 PrintOnError(NULL, NULL); 1685 1686 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1687 Targ_PrintGraph(2); 1688 Trace_Log(MAKEERROR, 0); 1689 exit(2); /* Not 1 so -q can distinguish error */ 1690 } 1691 1692 /* 1693 * Punt -- 1694 * Major exception once jobs are being created. Kills all jobs, prints 1695 * a message and exits. 1696 * 1697 * Results: 1698 * None 1699 * 1700 * Side Effects: 1701 * All children are killed indiscriminately and the program Lib_Exits 1702 */ 1703 /* VARARGS */ 1704 void 1705 Punt(const char *fmt, ...) 1706 { 1707 va_list ap; 1708 1709 va_start(ap, fmt); 1710 (void)fflush(stdout); 1711 (void)fprintf(stderr, "%s: ", progname); 1712 (void)vfprintf(stderr, fmt, ap); 1713 va_end(ap); 1714 (void)fprintf(stderr, "\n"); 1715 (void)fflush(stderr); 1716 1717 PrintOnError(NULL, NULL); 1718 1719 DieHorribly(); 1720 } 1721 1722 /*- 1723 * DieHorribly -- 1724 * Exit without giving a message. 1725 * 1726 * Results: 1727 * None 1728 * 1729 * Side Effects: 1730 * A big one... 1731 */ 1732 void 1733 DieHorribly(void) 1734 { 1735 if (jobsRunning) 1736 Job_AbortAll(); 1737 if (DEBUG(GRAPH2)) 1738 Targ_PrintGraph(2); 1739 Trace_Log(MAKEERROR, 0); 1740 exit(2); /* Not 1, so -q can distinguish error */ 1741 } 1742 1743 /* 1744 * Finish -- 1745 * Called when aborting due to errors in child shell to signal 1746 * abnormal exit. 1747 * 1748 * Results: 1749 * None 1750 * 1751 * Side Effects: 1752 * The program exits 1753 */ 1754 void 1755 Finish(int errors) 1756 /* number of errors encountered in Make_Make */ 1757 { 1758 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1759 } 1760 1761 /* 1762 * eunlink -- 1763 * Remove a file carefully, avoiding directories. 1764 */ 1765 int 1766 eunlink(const char *file) 1767 { 1768 struct stat st; 1769 1770 if (lstat(file, &st) == -1) 1771 return -1; 1772 1773 if (S_ISDIR(st.st_mode)) { 1774 errno = EISDIR; 1775 return -1; 1776 } 1777 return unlink(file); 1778 } 1779 1780 /* 1781 * execError -- 1782 * Print why exec failed, avoiding stdio. 1783 */ 1784 void 1785 execError(const char *af, const char *av) 1786 { 1787 #ifdef USE_IOVEC 1788 int i = 0; 1789 struct iovec iov[8]; 1790 #define IOADD(s) \ 1791 (void)(iov[i].iov_base = UNCONST(s), \ 1792 iov[i].iov_len = strlen(iov[i].iov_base), \ 1793 i++) 1794 #else 1795 #define IOADD(void)write(2, s, strlen(s)) 1796 #endif 1797 1798 IOADD(progname); 1799 IOADD(": "); 1800 IOADD(af); 1801 IOADD("("); 1802 IOADD(av); 1803 IOADD(") failed ("); 1804 IOADD(strerror(errno)); 1805 IOADD(")\n"); 1806 1807 #ifdef USE_IOVEC 1808 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1809 continue; 1810 #endif 1811 } 1812 1813 /* 1814 * usage -- 1815 * exit with usage message 1816 */ 1817 static void 1818 usage(void) 1819 { 1820 char *p; 1821 if ((p = strchr(progname, '[')) != NULL) 1822 *p = '\0'; 1823 1824 (void)fprintf(stderr, 1825 "usage: %s [-BeikNnqrstWwX] \n\ 1826 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1827 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1828 [-V variable] [variable=value] [target ...]\n", progname); 1829 exit(2); 1830 } 1831 1832 1833 int 1834 PrintAddr(void *a, void *b) 1835 { 1836 printf("%lx ", (unsigned long) a); 1837 return b ? 0 : 0; 1838 } 1839 1840 1841 1842 void 1843 PrintOnError(GNode *gn, const char *s) 1844 { 1845 static GNode *en = NULL; 1846 char tmp[64]; 1847 char *cp; 1848 1849 if (s) 1850 printf("%s", s); 1851 1852 printf("\n%s: stopped in %s\n", progname, curdir); 1853 1854 if (en) 1855 return; /* we've been here! */ 1856 if (gn) { 1857 /* 1858 * We can print this even if there is no .ERROR target. 1859 */ 1860 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1861 } 1862 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1863 sizeof(tmp) - 1); 1864 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, FALSE, TRUE, FALSE); 1865 if (cp) { 1866 if (*cp) 1867 printf("%s", cp); 1868 free(cp); 1869 } 1870 fflush(stdout); 1871 1872 /* 1873 * Finally, see if there is a .ERROR target, and run it if so. 1874 */ 1875 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1876 if (en) { 1877 en->type |= OP_SPECIAL; 1878 Compat_Make(en, en); 1879 } 1880 } 1881 1882 void 1883 Main_ExportMAKEFLAGS(Boolean first) 1884 { 1885 static int once = 1; 1886 char tmp[64]; 1887 char *s; 1888 1889 if (once != first) 1890 return; 1891 once = 0; 1892 1893 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1894 sizeof(tmp)); 1895 s = Var_Subst(NULL, tmp, VAR_CMD, FALSE, TRUE, FALSE); 1896 if (s && *s) { 1897 #ifdef POSIX 1898 setenv("MAKEFLAGS", s, 1); 1899 #else 1900 setenv("MAKE", s, 1); 1901 #endif 1902 } 1903 } 1904 1905 char * 1906 getTmpdir(void) 1907 { 1908 static char *tmpdir = NULL; 1909 1910 if (!tmpdir) { 1911 struct stat st; 1912 1913 /* 1914 * Honor $TMPDIR but only if it is valid. 1915 * Ensure it ends with /. 1916 */ 1917 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 1918 FALSE, TRUE, FALSE); 1919 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1920 free(tmpdir); 1921 tmpdir = bmake_strdup(_PATH_TMP); 1922 } 1923 } 1924 return tmpdir; 1925 } 1926 1927 /* 1928 * Create and open a temp file using "pattern". 1929 * If "fnamep" is provided set it to a copy of the filename created. 1930 * Otherwise unlink the file once open. 1931 */ 1932 int 1933 mkTempFile(const char *pattern, char **fnamep) 1934 { 1935 static char *tmpdir = NULL; 1936 char tfile[MAXPATHLEN]; 1937 int fd; 1938 1939 if (!pattern) 1940 pattern = TMPPAT; 1941 if (!tmpdir) 1942 tmpdir = getTmpdir(); 1943 if (pattern[0] == '/') { 1944 snprintf(tfile, sizeof(tfile), "%s", pattern); 1945 } else { 1946 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1947 } 1948 if ((fd = mkstemp(tfile)) < 0) 1949 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1950 if (fnamep) { 1951 *fnamep = bmake_strdup(tfile); 1952 } else { 1953 unlink(tfile); /* we just want the descriptor */ 1954 } 1955 return fd; 1956 } 1957 1958 1959 /* 1960 * Return a Boolean based on setting of a knob. 1961 * 1962 * If the knob is not set, the supplied default is the return value. 1963 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 1964 * is FALSE, otherwise TRUE. 1965 */ 1966 Boolean 1967 getBoolean(const char *name, Boolean bf) 1968 { 1969 char tmp[64]; 1970 char *cp; 1971 1972 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) { 1973 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, FALSE, TRUE, FALSE); 1974 1975 if (cp) { 1976 switch(*cp) { 1977 case '\0': /* not set - the default wins */ 1978 break; 1979 case '0': 1980 case 'f': 1981 case 'n': 1982 bf = FALSE; 1983 break; 1984 case 'o': 1985 switch (cp[1]) { 1986 case 'f': 1987 bf = FALSE; 1988 break; 1989 default: 1990 bf = TRUE; 1991 break; 1992 } 1993 break; 1994 default: 1995 bf = TRUE; 1996 break; 1997 } 1998 free(cp); 1999 } 2000 } 2001 return (bf); 2002 } 2003
Indexes created Sun Oct 19 02:09:48 GMT 2025