main.c revision 1.188
1 /* $NetBSD: main.c,v 1.188 2010/06/03 15:40:16 sjg Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.188 2010/06/03 15:40:16 sjg Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.188 2010/06/03 15:40:16 sjg Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and two optional 103 * arguments for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and two arguments. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and two arguments. 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/signal.h> 121 #include <sys/stat.h> 122 #ifdef MAKE_NATIVE 123 #include <sys/utsname.h> 124 #endif 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <fcntl.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 134 #include "make.h" 135 #include "hash.h" 136 #include "dir.h" 137 #include "job.h" 138 #include "pathnames.h" 139 #include "trace.h" 140 141 #ifdef USE_IOVEC 142 #include <sys/uio.h> 143 #endif 144 145 #ifndef DEFMAXLOCAL 146 #define DEFMAXLOCAL DEFMAXJOBS 147 #endif /* DEFMAXLOCAL */ 148 149 Lst create; /* Targets to be made */ 150 time_t now; /* Time at start of make */ 151 GNode *DEFAULT; /* .DEFAULT node */ 152 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 153 154 static Boolean noBuiltins; /* -r flag */ 155 static Lst makefiles; /* ordered list of makefiles to read */ 156 static Boolean printVars; /* print value of one or more vars */ 157 static Lst variables; /* list of variables to print */ 158 int maxJobs; /* -j argument */ 159 static int maxJobTokens; /* -j argument */ 160 Boolean compatMake; /* -B argument */ 161 int debug; /* -d argument */ 162 Boolean noExecute; /* -n flag */ 163 Boolean noRecursiveExecute; /* -N flag */ 164 Boolean keepgoing; /* -k flag */ 165 Boolean queryFlag; /* -q flag */ 166 Boolean touchFlag; /* -t flag */ 167 Boolean ignoreErrors; /* -i flag */ 168 Boolean beSilent; /* -s flag */ 169 Boolean oldVars; /* variable substitution style */ 170 Boolean checkEnvFirst; /* -e flag */ 171 Boolean parseWarnFatal; /* -W flag */ 172 Boolean jobServer; /* -J flag */ 173 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 174 Boolean varNoExportEnv; /* -X flag */ 175 Boolean doing_depend; /* Set while reading .depend */ 176 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 177 static const char * tracefile; 178 static char * Check_Cwd_av(int, char **, int); 179 static void MainParseArgs(int, char **); 180 static int ReadMakefile(const void *, const void *); 181 static void usage(void); 182 183 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 184 static char curdir[MAXPATHLEN + 1]; /* startup directory */ 185 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 186 char *progname; /* the program name */ 187 char *makeDependfile; 188 pid_t myPid; 189 190 Boolean forceJobs = FALSE; 191 192 extern Lst parseIncPath; 193 194 static void 195 parse_debug_options(const char *argvalue) 196 { 197 const char *modules; 198 const char *mode; 199 char *fname; 200 int len; 201 202 for (modules = argvalue; *modules; ++modules) { 203 switch (*modules) { 204 case 'A': 205 debug = ~0; 206 break; 207 case 'a': 208 debug |= DEBUG_ARCH; 209 break; 210 case 'C': 211 debug |= DEBUG_CWD; 212 break; 213 case 'c': 214 debug |= DEBUG_COND; 215 break; 216 case 'd': 217 debug |= DEBUG_DIR; 218 break; 219 case 'e': 220 debug |= DEBUG_ERROR; 221 break; 222 case 'f': 223 debug |= DEBUG_FOR; 224 break; 225 case 'g': 226 if (modules[1] == '1') { 227 debug |= DEBUG_GRAPH1; 228 ++modules; 229 } 230 else if (modules[1] == '2') { 231 debug |= DEBUG_GRAPH2; 232 ++modules; 233 } 234 else if (modules[1] == '3') { 235 debug |= DEBUG_GRAPH3; 236 ++modules; 237 } 238 break; 239 case 'j': 240 debug |= DEBUG_JOB; 241 break; 242 case 'l': 243 debug |= DEBUG_LOUD; 244 break; 245 case 'm': 246 debug |= DEBUG_MAKE; 247 break; 248 case 'n': 249 debug |= DEBUG_SCRIPT; 250 break; 251 case 'p': 252 debug |= DEBUG_PARSE; 253 break; 254 case 's': 255 debug |= DEBUG_SUFF; 256 break; 257 case 't': 258 debug |= DEBUG_TARG; 259 break; 260 case 'v': 261 debug |= DEBUG_VAR; 262 break; 263 case 'x': 264 debug |= DEBUG_SHELL; 265 break; 266 case 'F': 267 if (debug_file != stdout && debug_file != stderr) 268 fclose(debug_file); 269 if (*++modules == '+') 270 mode = "a"; 271 else 272 mode = "w"; 273 if (strcmp(modules, "stdout") == 0) { 274 debug_file = stdout; 275 goto debug_setbuf; 276 } 277 if (strcmp(modules, "stderr") == 0) { 278 debug_file = stderr; 279 goto debug_setbuf; 280 } 281 len = strlen(modules); 282 fname = malloc(len + 20); 283 memcpy(fname, modules, len + 1); 284 /* Let the filename be modified by the pid */ 285 if (strcmp(fname + len - 3, ".%d") == 0) 286 snprintf(fname + len - 2, 20, "%d", getpid()); 287 debug_file = fopen(fname, mode); 288 if (!debug_file) { 289 fprintf(stderr, "Cannot open debug file %s\n", 290 fname); 291 usage(); 292 } 293 free(fname); 294 goto debug_setbuf; 295 default: 296 (void)fprintf(stderr, 297 "%s: illegal argument to d option -- %c\n", 298 progname, *modules); 299 usage(); 300 } 301 } 302 debug_setbuf: 303 /* 304 * Make the debug_file unbuffered, and make 305 * stdout line buffered (unless debugfile == stdout). 306 */ 307 setvbuf(debug_file, NULL, _IONBF, 0); 308 if (debug_file != stdout) { 309 setvbuf(stdout, NULL, _IOLBF, 0); 310 } 311 } 312 313 /*- 314 * MainParseArgs -- 315 * Parse a given argument vector. Called from main() and from 316 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 317 * 318 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 319 * 320 * Results: 321 * None 322 * 323 * Side Effects: 324 * Various global and local flags will be set depending on the flags 325 * given 326 */ 327 static void 328 MainParseArgs(int argc, char **argv) 329 { 330 char *p; 331 int c = '?'; 332 int arginc; 333 char *argvalue; 334 const char *getopt_def; 335 char *optscan; 336 Boolean inOption, dashDash = FALSE; 337 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 338 339 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst" 340 /* Can't actually use getopt(3) because rescanning is not portable */ 341 342 getopt_def = OPTFLAGS; 343 rearg: 344 inOption = FALSE; 345 optscan = NULL; 346 while(argc > 1) { 347 char *getopt_spec; 348 if(!inOption) 349 optscan = argv[1]; 350 c = *optscan++; 351 arginc = 0; 352 if(inOption) { 353 if(c == '\0') { 354 ++argv; 355 --argc; 356 inOption = FALSE; 357 continue; 358 } 359 } else { 360 if (c != '-' || dashDash) 361 break; 362 inOption = TRUE; 363 c = *optscan++; 364 } 365 /* '-' found at some earlier point */ 366 getopt_spec = strchr(getopt_def, c); 367 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 368 /* -<something> found, and <something> should have an arg */ 369 inOption = FALSE; 370 arginc = 1; 371 argvalue = optscan; 372 if(*argvalue == '\0') { 373 if (argc < 3) 374 goto noarg; 375 argvalue = argv[2]; 376 arginc = 2; 377 } 378 } else { 379 argvalue = NULL; 380 } 381 switch(c) { 382 case '\0': 383 arginc = 1; 384 inOption = FALSE; 385 break; 386 case 'B': 387 compatMake = TRUE; 388 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 389 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 390 break; 391 case 'C': 392 if (chdir(argvalue) == -1) { 393 (void)fprintf(stderr, 394 "%s: chdir %s: %s\n", 395 progname, argvalue, 396 strerror(errno)); 397 exit(1); 398 } 399 if (getcwd(curdir, MAXPATHLEN) == NULL) { 400 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 401 exit(2); 402 } 403 ignorePWD = TRUE; 404 break; 405 case 'D': 406 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 407 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 408 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 409 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 410 break; 411 case 'I': 412 if (argvalue == NULL) goto noarg; 413 Parse_AddIncludeDir(argvalue); 414 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 415 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 416 break; 417 case 'J': 418 if (argvalue == NULL) goto noarg; 419 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 420 (void)fprintf(stderr, 421 "%s: internal error -- J option malformed (%s)\n", 422 progname, argvalue); 423 usage(); 424 } 425 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 426 (fcntl(jp_1, F_GETFD, 0) < 0)) { 427 #if 0 428 (void)fprintf(stderr, 429 "%s: ###### warning -- J descriptors were closed!\n", 430 progname); 431 exit(2); 432 #endif 433 jp_0 = -1; 434 jp_1 = -1; 435 compatMake = TRUE; 436 } else { 437 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 438 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 439 jobServer = TRUE; 440 } 441 break; 442 case 'N': 443 noExecute = TRUE; 444 noRecursiveExecute = TRUE; 445 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 446 break; 447 case 'S': 448 keepgoing = FALSE; 449 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 450 break; 451 case 'T': 452 if (argvalue == NULL) goto noarg; 453 tracefile = bmake_strdup(argvalue); 454 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 455 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 456 break; 457 case 'V': 458 if (argvalue == NULL) goto noarg; 459 printVars = TRUE; 460 (void)Lst_AtEnd(variables, argvalue); 461 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 462 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 463 break; 464 case 'W': 465 parseWarnFatal = TRUE; 466 break; 467 case 'X': 468 varNoExportEnv = TRUE; 469 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 470 break; 471 case 'd': 472 if (argvalue == NULL) goto noarg; 473 /* If '-d-opts' don't pass to children */ 474 if (argvalue[0] == '-') 475 argvalue++; 476 else { 477 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 478 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 479 } 480 parse_debug_options(argvalue); 481 break; 482 case 'e': 483 checkEnvFirst = TRUE; 484 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 485 break; 486 case 'f': 487 if (argvalue == NULL) goto noarg; 488 (void)Lst_AtEnd(makefiles, argvalue); 489 break; 490 case 'i': 491 ignoreErrors = TRUE; 492 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 493 break; 494 case 'j': 495 if (argvalue == NULL) goto noarg; 496 forceJobs = TRUE; 497 maxJobs = strtol(argvalue, &p, 0); 498 if (*p != '\0' || maxJobs < 1) { 499 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 500 progname); 501 exit(1); 502 } 503 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 504 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 505 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 506 maxJobTokens = maxJobs; 507 break; 508 case 'k': 509 keepgoing = TRUE; 510 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 511 break; 512 case 'm': 513 if (argvalue == NULL) goto noarg; 514 /* look for magic parent directory search string */ 515 if (strncmp(".../", argvalue, 4) == 0) { 516 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 517 found_path, sizeof(found_path))) 518 break; /* nothing doing */ 519 (void)Dir_AddDir(sysIncPath, found_path); 520 } else { 521 (void)Dir_AddDir(sysIncPath, argvalue); 522 } 523 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 524 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 525 break; 526 case 'n': 527 noExecute = TRUE; 528 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 529 break; 530 case 'q': 531 queryFlag = TRUE; 532 /* Kind of nonsensical, wot? */ 533 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 534 break; 535 case 'r': 536 noBuiltins = TRUE; 537 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 538 break; 539 case 's': 540 beSilent = TRUE; 541 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 542 break; 543 case 't': 544 touchFlag = TRUE; 545 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 546 break; 547 case '-': 548 dashDash = TRUE; 549 break; 550 default: 551 case '?': 552 usage(); 553 } 554 argv += arginc; 555 argc -= arginc; 556 } 557 558 oldVars = TRUE; 559 560 /* 561 * See if the rest of the arguments are variable assignments and 562 * perform them if so. Else take them to be targets and stuff them 563 * on the end of the "create" list. 564 */ 565 for (; argc > 1; ++argv, --argc) 566 if (Parse_IsVar(argv[1])) { 567 Parse_DoVar(argv[1], VAR_CMD); 568 } else { 569 if (!*argv[1]) 570 Punt("illegal (null) argument."); 571 if (*argv[1] == '-' && !dashDash) 572 goto rearg; 573 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 574 } 575 576 return; 577 noarg: 578 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 579 progname, c); 580 usage(); 581 } 582 583 /*- 584 * Main_ParseArgLine -- 585 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 586 * is encountered and by main() when reading the .MAKEFLAGS envariable. 587 * Takes a line of arguments and breaks it into its 588 * component words and passes those words and the number of them to the 589 * MainParseArgs function. 590 * The line should have all its leading whitespace removed. 591 * 592 * Input: 593 * line Line to fracture 594 * 595 * Results: 596 * None 597 * 598 * Side Effects: 599 * Only those that come from the various arguments. 600 */ 601 void 602 Main_ParseArgLine(const char *line) 603 { 604 char **argv; /* Manufactured argument vector */ 605 int argc; /* Number of arguments in argv */ 606 char *args; /* Space used by the args */ 607 char *buf, *p1; 608 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 609 size_t len; 610 611 if (line == NULL) 612 return; 613 for (; *line == ' '; ++line) 614 continue; 615 if (!*line) 616 return; 617 618 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 619 (void)snprintf(buf, len, "%s %s", argv0, line); 620 if (p1) 621 free(p1); 622 623 argv = brk_string(buf, &argc, TRUE, &args); 624 if (argv == NULL) { 625 Error("Unterminated quoted string [%s]", buf); 626 free(buf); 627 return; 628 } 629 free(buf); 630 MainParseArgs(argc, argv); 631 632 free(args); 633 free(argv); 634 } 635 636 Boolean 637 Main_SetObjdir(const char *path) 638 { 639 struct stat sb; 640 char *p = NULL; 641 char buf[MAXPATHLEN + 1]; 642 Boolean rc = FALSE; 643 644 /* expand variable substitutions */ 645 if (strchr(path, '$') != 0) { 646 snprintf(buf, MAXPATHLEN, "%s", path); 647 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 648 } 649 650 if (path[0] != '/') { 651 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 652 path = buf; 653 } 654 655 /* look for the directory and try to chdir there */ 656 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 657 if (chdir(path)) { 658 (void)fprintf(stderr, "make warning: %s: %s.\n", 659 path, strerror(errno)); 660 } else { 661 strncpy(objdir, path, MAXPATHLEN); 662 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 663 setenv("PWD", objdir, 1); 664 Dir_InitDot(); 665 rc = TRUE; 666 } 667 } 668 669 if (p) 670 free(p); 671 return rc; 672 } 673 674 /*- 675 * ReadAllMakefiles -- 676 * wrapper around ReadMakefile() to read all. 677 * 678 * Results: 679 * TRUE if ok, FALSE on error 680 */ 681 static int 682 ReadAllMakefiles(const void *p, const void *q) 683 { 684 return (ReadMakefile(p, q) == 0); 685 } 686 687 static int 688 str2Lst_Append(Lst lp, char *str, const char *sep) 689 { 690 char *cp; 691 int n; 692 693 if (!sep) 694 sep = " \t"; 695 696 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 697 (void)Lst_AtEnd(lp, cp); 698 n++; 699 } 700 return (n); 701 } 702 703 #ifdef SIGINFO 704 /*ARGSUSED*/ 705 static void 706 siginfo(int signo) 707 { 708 char dir[MAXPATHLEN]; 709 char str[2 * MAXPATHLEN]; 710 int len; 711 if (getcwd(dir, sizeof(dir)) == NULL) 712 return; 713 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 714 if (len > 0) 715 (void)write(STDERR_FILENO, str, (size_t)len); 716 } 717 #endif 718 719 /* 720 * Allow makefiles some control over the mode we run in. 721 */ 722 void 723 MakeMode(const char *mode) 724 { 725 char *mp = NULL; 726 727 if (!mode) 728 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 729 730 if (mode && *mode) { 731 if (strstr(mode, "compat")) { 732 compatMake = TRUE; 733 forceJobs = FALSE; 734 } 735 } 736 if (mp) 737 free(mp); 738 } 739 740 /*- 741 * main -- 742 * The main function, for obvious reasons. Initializes variables 743 * and a few modules, then parses the arguments give it in the 744 * environment and on the command line. Reads the system makefile 745 * followed by either Makefile, makefile or the file given by the 746 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 747 * flags it has received by then uses either the Make or the Compat 748 * module to create the initial list of targets. 749 * 750 * Results: 751 * If -q was given, exits -1 if anything was out-of-date. Else it exits 752 * 0. 753 * 754 * Side Effects: 755 * The program exits when done. Targets are created. etc. etc. etc. 756 */ 757 int 758 main(int argc, char **argv) 759 { 760 Lst targs; /* target nodes to create -- passed to Make_Init */ 761 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 762 struct stat sb, sa; 763 char *p1, *path, *pwd; 764 char mdpath[MAXPATHLEN]; 765 char *machine = getenv("MACHINE"); 766 const char *machine_arch = getenv("MACHINE_ARCH"); 767 char *syspath = getenv("MAKESYSPATH"); 768 Lst sysMkPath; /* Path of sys.mk */ 769 char *cp = NULL, *start; 770 /* avoid faults on read-only strings */ 771 static char defsyspath[] = _PATH_DEFSYSPATH; 772 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 773 struct timeval rightnow; /* to initialize random seed */ 774 #ifdef MAKE_NATIVE 775 struct utsname utsname; 776 #endif 777 778 /* default to writing debug to stderr */ 779 debug_file = stderr; 780 781 #ifdef SIGINFO 782 (void)bmake_signal(SIGINFO, siginfo); 783 #endif 784 /* 785 * Set the seed to produce a different random sequence 786 * on each program execution. 787 */ 788 gettimeofday(&rightnow, NULL); 789 srandom(rightnow.tv_sec + rightnow.tv_usec); 790 791 if ((progname = strrchr(argv[0], '/')) != NULL) 792 progname++; 793 else 794 progname = argv[0]; 795 #ifdef RLIMIT_NOFILE 796 /* 797 * get rid of resource limit on file descriptors 798 */ 799 { 800 struct rlimit rl; 801 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 802 rl.rlim_cur != rl.rlim_max) { 803 rl.rlim_cur = rl.rlim_max; 804 (void)setrlimit(RLIMIT_NOFILE, &rl); 805 } 806 } 807 #endif 808 809 /* 810 * Get the name of this type of MACHINE from utsname 811 * so we can share an executable for similar machines. 812 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 813 * 814 * Note that both MACHINE and MACHINE_ARCH are decided at 815 * run-time. 816 */ 817 if (!machine) { 818 #ifdef MAKE_NATIVE 819 if (uname(&utsname) == -1) { 820 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 821 strerror(errno)); 822 exit(2); 823 } 824 machine = utsname.machine; 825 #else 826 #ifdef MAKE_MACHINE 827 machine = MAKE_MACHINE; 828 #else 829 machine = "unknown"; 830 #endif 831 #endif 832 } 833 834 if (!machine_arch) { 835 #ifndef MACHINE_ARCH 836 #ifdef MAKE_MACHINE_ARCH 837 machine_arch = MAKE_MACHINE_ARCH; 838 #else 839 machine_arch = "unknown"; 840 #endif 841 #else 842 machine_arch = MACHINE_ARCH; 843 #endif 844 } 845 846 myPid = getpid(); /* remember this for vFork() */ 847 848 /* 849 * Just in case MAKEOBJDIR wants us to do something tricky. 850 */ 851 Var_Init(); /* Initialize the lists of variables for 852 * parsing arguments */ 853 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 854 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 855 #ifdef MAKE_VERSION 856 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 857 #endif 858 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 859 /* 860 * This is the traditional preference for makefiles. 861 */ 862 #ifndef MAKEFILE_PREFERENCE_LIST 863 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 864 #endif 865 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 866 VAR_GLOBAL, 0); 867 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 868 869 create = Lst_Init(FALSE); 870 makefiles = Lst_Init(FALSE); 871 printVars = FALSE; 872 variables = Lst_Init(FALSE); 873 beSilent = FALSE; /* Print commands as executed */ 874 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 875 noExecute = FALSE; /* Execute all commands */ 876 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 877 keepgoing = FALSE; /* Stop on error */ 878 allPrecious = FALSE; /* Remove targets when interrupted */ 879 queryFlag = FALSE; /* This is not just a check-run */ 880 noBuiltins = FALSE; /* Read the built-in rules */ 881 touchFlag = FALSE; /* Actually update targets */ 882 debug = 0; /* No debug verbosity, please. */ 883 jobsRunning = FALSE; 884 885 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 886 maxJobTokens = maxJobs; 887 compatMake = FALSE; /* No compat mode */ 888 ignorePWD = FALSE; 889 890 /* 891 * Initialize the parsing, directory and variable modules to prepare 892 * for the reading of inclusion paths and variable settings on the 893 * command line 894 */ 895 896 /* 897 * Initialize various variables. 898 * MAKE also gets this name, for compatibility 899 * .MAKEFLAGS gets set to the empty string just in case. 900 * MFLAGS also gets initialized empty, for compatibility. 901 */ 902 Parse_Init(); 903 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 904 /* 905 * Leave alone if it is an absolute path, or if it does 906 * not contain a '/' in which case we need to find it in 907 * the path, like execvp(3) and the shells do. 908 */ 909 p1 = argv[0]; 910 } else { 911 /* 912 * A relative path, canonicalize it. 913 */ 914 p1 = realpath(argv[0], mdpath); 915 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 916 p1 = argv[0]; /* realpath failed */ 917 } 918 } 919 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 920 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 921 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 922 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 923 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 924 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 925 926 /* 927 * Set some other useful macros 928 */ 929 { 930 char tmp[64]; 931 const char *ep; 932 933 if (!(ep = getenv(MAKE_LEVEL))) { 934 ep = "0"; 935 } 936 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0); 937 snprintf(tmp, sizeof(tmp), "%u", myPid); 938 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 939 snprintf(tmp, sizeof(tmp), "%u", getppid()); 940 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 941 } 942 Job_SetPrefix(); 943 944 /* 945 * First snag any flags out of the MAKE environment variable. 946 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 947 * in a different format). 948 */ 949 #ifdef POSIX 950 Main_ParseArgLine(getenv("MAKEFLAGS")); 951 #else 952 Main_ParseArgLine(getenv("MAKE")); 953 #endif 954 955 /* 956 * Find where we are (now). 957 * We take care of PWD for the automounter below... 958 */ 959 if (getcwd(curdir, MAXPATHLEN) == NULL) { 960 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 961 exit(2); 962 } 963 964 MainParseArgs(argc, argv); 965 966 /* 967 * Verify that cwd is sane. 968 */ 969 if (stat(curdir, &sa) == -1) { 970 (void)fprintf(stderr, "%s: %s: %s.\n", 971 progname, curdir, strerror(errno)); 972 exit(2); 973 } 974 975 /* 976 * All this code is so that we know where we are when we start up 977 * on a different machine with pmake. 978 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 979 * since the value of curdir can vary depending on how we got 980 * here. Ie sitting at a shell prompt (shell that provides $PWD) 981 * or via subdir.mk in which case its likely a shell which does 982 * not provide it. 983 * So, to stop it breaking this case only, we ignore PWD if 984 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 985 */ 986 if (!ignorePWD && 987 (pwd = getenv("PWD")) != NULL && 988 getenv("MAKEOBJDIRPREFIX") == NULL) { 989 const char *makeobjdir = getenv("MAKEOBJDIR"); 990 991 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 992 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 993 sa.st_dev == sb.st_dev) 994 (void)strncpy(curdir, pwd, MAXPATHLEN); 995 } 996 } 997 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 998 999 /* 1000 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1001 * MAKEOBJDIR is set in the environment, try only that value 1002 * and fall back to .CURDIR if it does not exist. 1003 * 1004 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 1005 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1006 * of these paths exist, just use .CURDIR. 1007 */ 1008 Dir_Init(curdir); 1009 (void)Main_SetObjdir(curdir); 1010 1011 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1012 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1013 (void)Main_SetObjdir(mdpath); 1014 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1015 (void)Main_SetObjdir(path); 1016 } else { 1017 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1018 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1019 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1020 _PATH_OBJDIRPREFIX, curdir); 1021 (void)Main_SetObjdir(mdpath); 1022 } 1023 } 1024 1025 /* 1026 * Be compatible if user did not specify -j and did not explicitly 1027 * turned compatibility on 1028 */ 1029 if (!compatMake && !forceJobs) { 1030 compatMake = TRUE; 1031 } 1032 1033 /* 1034 * Initialize archive, target and suffix modules in preparation for 1035 * parsing the makefile(s) 1036 */ 1037 Arch_Init(); 1038 Targ_Init(); 1039 Suff_Init(); 1040 Trace_Init(tracefile); 1041 1042 DEFAULT = NULL; 1043 (void)time(&now); 1044 1045 Trace_Log(MAKESTART, NULL); 1046 1047 /* 1048 * Set up the .TARGETS variable to contain the list of targets to be 1049 * created. If none specified, make the variable empty -- the parser 1050 * will fill the thing in with the default or .MAIN target. 1051 */ 1052 if (!Lst_IsEmpty(create)) { 1053 LstNode ln; 1054 1055 for (ln = Lst_First(create); ln != NULL; 1056 ln = Lst_Succ(ln)) { 1057 char *name = (char *)Lst_Datum(ln); 1058 1059 Var_Append(".TARGETS", name, VAR_GLOBAL); 1060 } 1061 } else 1062 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1063 1064 1065 /* 1066 * If no user-supplied system path was given (through the -m option) 1067 * add the directories from the DEFSYSPATH (more than one may be given 1068 * as dir1:...:dirn) to the system include path. 1069 */ 1070 if (syspath == NULL || *syspath == '\0') 1071 syspath = defsyspath; 1072 else 1073 syspath = bmake_strdup(syspath); 1074 1075 for (start = syspath; *start != '\0'; start = cp) { 1076 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1077 continue; 1078 if (*cp == ':') { 1079 *cp++ = '\0'; 1080 } 1081 /* look for magic parent directory search string */ 1082 if (strncmp(".../", start, 4) != 0) { 1083 (void)Dir_AddDir(defIncPath, start); 1084 } else { 1085 if (Dir_FindHereOrAbove(curdir, start+4, 1086 found_path, sizeof(found_path))) { 1087 (void)Dir_AddDir(defIncPath, found_path); 1088 } 1089 } 1090 } 1091 if (syspath != defsyspath) 1092 free(syspath); 1093 1094 /* 1095 * Read in the built-in rules first, followed by the specified 1096 * makefile, if it was (makefile != NULL), or the default 1097 * makefile and Makefile, in that order, if it wasn't. 1098 */ 1099 if (!noBuiltins) { 1100 LstNode ln; 1101 1102 sysMkPath = Lst_Init(FALSE); 1103 Dir_Expand(_PATH_DEFSYSMK, 1104 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1105 sysMkPath); 1106 if (Lst_IsEmpty(sysMkPath)) 1107 Fatal("%s: no system rules (%s).", progname, 1108 _PATH_DEFSYSMK); 1109 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1110 if (ln == NULL) 1111 Fatal("%s: cannot open %s.", progname, 1112 (char *)Lst_Datum(ln)); 1113 } 1114 1115 if (!Lst_IsEmpty(makefiles)) { 1116 LstNode ln; 1117 1118 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1119 if (ln != NULL) 1120 Fatal("%s: cannot open %s.", progname, 1121 (char *)Lst_Datum(ln)); 1122 } else { 1123 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1124 VAR_CMD, 0); 1125 if (p1) { 1126 (void)str2Lst_Append(makefiles, p1, NULL); 1127 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1128 free(p1); 1129 } 1130 } 1131 1132 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1133 if (!noBuiltins || !printVars) { 1134 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1135 VAR_CMD, 0); 1136 doing_depend = TRUE; 1137 (void)ReadMakefile(makeDependfile, NULL); 1138 doing_depend = FALSE; 1139 } 1140 1141 MakeMode(NULL); 1142 1143 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1144 if (p1) 1145 free(p1); 1146 1147 if (!compatMake) 1148 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1149 if (DEBUG(JOB)) 1150 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1151 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1152 1153 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1154 1155 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1156 1157 1158 /* 1159 * For compatibility, look at the directories in the VPATH variable 1160 * and add them to the search path, if the variable is defined. The 1161 * variable's value is in the same format as the PATH envariable, i.e. 1162 * <directory>:<directory>:<directory>... 1163 */ 1164 if (Var_Exists("VPATH", VAR_CMD)) { 1165 char *vpath, savec; 1166 /* 1167 * GCC stores string constants in read-only memory, but 1168 * Var_Subst will want to write this thing, so store it 1169 * in an array 1170 */ 1171 static char VPATH[] = "${VPATH}"; 1172 1173 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1174 path = vpath; 1175 do { 1176 /* skip to end of directory */ 1177 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1178 continue; 1179 /* Save terminator character so know when to stop */ 1180 savec = *cp; 1181 *cp = '\0'; 1182 /* Add directory to search path */ 1183 (void)Dir_AddDir(dirSearchPath, path); 1184 *cp = savec; 1185 path = cp + 1; 1186 } while (savec == ':'); 1187 free(vpath); 1188 } 1189 1190 /* 1191 * Now that all search paths have been read for suffixes et al, it's 1192 * time to add the default search path to their lists... 1193 */ 1194 Suff_DoPaths(); 1195 1196 /* 1197 * Propagate attributes through :: dependency lists. 1198 */ 1199 Targ_Propagate(); 1200 1201 /* print the initial graph, if the user requested it */ 1202 if (DEBUG(GRAPH1)) 1203 Targ_PrintGraph(1); 1204 1205 /* print the values of any variables requested by the user */ 1206 if (printVars) { 1207 LstNode ln; 1208 1209 for (ln = Lst_First(variables); ln != NULL; 1210 ln = Lst_Succ(ln)) { 1211 char *var = (char *)Lst_Datum(ln); 1212 char *value; 1213 1214 if (strchr(var, '$')) { 1215 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1216 } else { 1217 value = Var_Value(var, VAR_GLOBAL, &p1); 1218 } 1219 printf("%s\n", value ? value : ""); 1220 if (p1) 1221 free(p1); 1222 } 1223 } else { 1224 /* 1225 * Have now read the entire graph and need to make a list of 1226 * targets to create. If none was given on the command line, 1227 * we consult the parsing module to find the main target(s) 1228 * to create. 1229 */ 1230 if (Lst_IsEmpty(create)) 1231 targs = Parse_MainName(); 1232 else 1233 targs = Targ_FindList(create, TARG_CREATE); 1234 1235 if (!compatMake) { 1236 /* 1237 * Initialize job module before traversing the graph 1238 * now that any .BEGIN and .END targets have been read. 1239 * This is done only if the -q flag wasn't given 1240 * (to prevent the .BEGIN from being executed should 1241 * it exist). 1242 */ 1243 if (!queryFlag) { 1244 Job_Init(); 1245 jobsRunning = TRUE; 1246 } 1247 1248 /* Traverse the graph, checking on all the targets */ 1249 outOfDate = Make_Run(targs); 1250 } else { 1251 /* 1252 * Compat_Init will take care of creating all the 1253 * targets as well as initializing the module. 1254 */ 1255 Compat_Run(targs); 1256 } 1257 } 1258 1259 #ifdef CLEANUP 1260 Lst_Destroy(targs, NULL); 1261 Lst_Destroy(variables, NULL); 1262 Lst_Destroy(makefiles, NULL); 1263 Lst_Destroy(create, (FreeProc *)free); 1264 #endif 1265 1266 /* print the graph now it's been processed if the user requested it */ 1267 if (DEBUG(GRAPH2)) 1268 Targ_PrintGraph(2); 1269 1270 Trace_Log(MAKEEND, 0); 1271 1272 Suff_End(); 1273 Targ_End(); 1274 Arch_End(); 1275 Var_End(); 1276 Parse_End(); 1277 Dir_End(); 1278 Job_End(); 1279 Trace_End(); 1280 1281 return outOfDate ? 1 : 0; 1282 } 1283 1284 /*- 1285 * ReadMakefile -- 1286 * Open and parse the given makefile. 1287 * 1288 * Results: 1289 * 0 if ok. -1 if couldn't open file. 1290 * 1291 * Side Effects: 1292 * lots 1293 */ 1294 static int 1295 ReadMakefile(const void *p, const void *q __unused) 1296 { 1297 const char *fname = p; /* makefile to read */ 1298 int fd; 1299 size_t len = MAXPATHLEN; 1300 char *name, *path = bmake_malloc(len); 1301 1302 if (!strcmp(fname, "-")) { 1303 Parse_File("(stdin)", dup(fileno(stdin))); 1304 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1305 } else { 1306 /* if we've chdir'd, rebuild the path name */ 1307 if (strcmp(curdir, objdir) && *fname != '/') { 1308 size_t plen = strlen(curdir) + strlen(fname) + 2; 1309 if (len < plen) 1310 path = bmake_realloc(path, len = 2 * plen); 1311 1312 (void)snprintf(path, len, "%s/%s", curdir, fname); 1313 fd = open(path, O_RDONLY); 1314 if (fd != -1) { 1315 fname = path; 1316 goto found; 1317 } 1318 1319 /* If curdir failed, try objdir (ala .depend) */ 1320 plen = strlen(objdir) + strlen(fname) + 2; 1321 if (len < plen) 1322 path = bmake_realloc(path, len = 2 * plen); 1323 (void)snprintf(path, len, "%s/%s", objdir, fname); 1324 fd = open(path, O_RDONLY); 1325 if (fd != -1) { 1326 fname = path; 1327 goto found; 1328 } 1329 } else { 1330 fd = open(fname, O_RDONLY); 1331 if (fd != -1) 1332 goto found; 1333 } 1334 /* look in -I and system include directories. */ 1335 name = Dir_FindFile(fname, parseIncPath); 1336 if (!name) 1337 name = Dir_FindFile(fname, 1338 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1339 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1340 if (name) 1341 free(name); 1342 free(path); 1343 return(-1); 1344 } 1345 fname = name; 1346 /* 1347 * set the MAKEFILE variable desired by System V fans -- the 1348 * placement of the setting here means it gets set to the last 1349 * makefile specified, as it is set by SysV make. 1350 */ 1351 found: 1352 if (!doing_depend) 1353 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1354 Parse_File(fname, fd); 1355 } 1356 free(path); 1357 return(0); 1358 } 1359 1360 1361 /* 1362 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1363 * in situations that would not arrise with ./obj (links or not). 1364 * This tends to break things like: 1365 * 1366 * build: 1367 * ${MAKE} includes 1368 * 1369 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1370 * opposed to an argument) in a command line and if so returns 1371 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1372 * the Makefile hold true. 1373 * 1374 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1375 * 1376 * The chdir() only happens in the child process, and does nothing if 1377 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1378 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1379 * do nothing - to ensure historic semantics can be retained. 1380 */ 1381 static int Check_Cwd_Off = 0; 1382 1383 static char * 1384 Check_Cwd_av(int ac, char **av, int copy) 1385 { 1386 static char *make[4]; 1387 static char *cur_dir = NULL; 1388 char **mp; 1389 char *cp; 1390 int is_cmd, next_cmd; 1391 int i; 1392 int n; 1393 1394 if (Check_Cwd_Off) { 1395 if (DEBUG(CWD)) 1396 fprintf(debug_file, "check_cwd: check is off.\n"); 1397 return NULL; 1398 } 1399 1400 if (make[0] == NULL) { 1401 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1402 Check_Cwd_Off = 1; 1403 if (DEBUG(CWD)) 1404 fprintf(debug_file, "check_cwd: turning check off.\n"); 1405 return NULL; 1406 } 1407 1408 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1409 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1410 make[0] = make[1]; 1411 make[1] = NULL; 1412 } else 1413 ++make[0]; 1414 make[2] = NULL; 1415 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1416 } 1417 if (ac == 0 || av == NULL) { 1418 if (DEBUG(CWD)) 1419 fprintf(debug_file, "check_cwd: empty command.\n"); 1420 return NULL; /* initialization only */ 1421 } 1422 1423 if (getenv("MAKEOBJDIR") == NULL && 1424 getenv("MAKEOBJDIRPREFIX") == NULL) { 1425 if (DEBUG(CWD)) 1426 fprintf(debug_file, "check_cwd: no obj dirs.\n"); 1427 return NULL; 1428 } 1429 1430 1431 next_cmd = 1; 1432 for (i = 0; i < ac; ++i) { 1433 is_cmd = next_cmd; 1434 1435 n = strlen(av[i]); 1436 cp = &(av[i])[n - 1]; 1437 if (strspn(av[i], "|&;") == (size_t)n) { 1438 next_cmd = 1; 1439 continue; 1440 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1441 next_cmd = 1; 1442 if (copy) { 1443 do { 1444 *cp-- = '\0'; 1445 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1446 *cp == ')' || *cp == '}') ; 1447 } else { 1448 /* 1449 * XXX this should not happen. 1450 */ 1451 fprintf(stderr, "%s: WARNING: raw arg ends in shell meta '%s'\n", 1452 progname, av[i]); 1453 } 1454 } else 1455 next_cmd = 0; 1456 1457 cp = av[i]; 1458 if (*cp == ';' || *cp == '&' || *cp == '|') 1459 is_cmd = 1; 1460 1461 if (DEBUG(CWD)) 1462 fprintf(debug_file, "av[%d] == %s '%s'", 1463 i, (is_cmd) ? "cmd" : "arg", av[i]); 1464 if (is_cmd != 0) { 1465 if (*cp == '(' || *cp == '{' || 1466 *cp == ';' || *cp == '&' || *cp == '|') { 1467 do { 1468 ++cp; 1469 } while (*cp == '(' || *cp == '{' || 1470 *cp == ';' || *cp == '&' || *cp == '|'); 1471 if (*cp == '\0') { 1472 next_cmd = 1; 1473 continue; 1474 } 1475 } 1476 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1477 if (DEBUG(CWD)) 1478 fprintf(debug_file, " == cd, done.\n"); 1479 return NULL; 1480 } 1481 for (mp = make; *mp != NULL; ++mp) { 1482 n = strlen(*mp); 1483 if (strcmp(cp, *mp) == 0) { 1484 if (DEBUG(CWD)) 1485 fprintf(debug_file, " %s == '%s', chdir(%s)\n", 1486 cp, *mp, cur_dir); 1487 return cur_dir; 1488 } 1489 } 1490 } 1491 if (DEBUG(CWD)) 1492 fprintf(debug_file, "\n"); 1493 } 1494 return NULL; 1495 } 1496 1497 char * 1498 Check_Cwd_Cmd(const char *cmd) 1499 { 1500 char *cp, *bp; 1501 char **av; 1502 int ac; 1503 1504 if (Check_Cwd_Off) 1505 return NULL; 1506 1507 if (cmd) { 1508 av = brk_string(cmd, &ac, TRUE, &bp); 1509 if (DEBUG(CWD)) 1510 fprintf(debug_file, "splitting: '%s' -> %d words\n", 1511 cmd, ac); 1512 } else { 1513 ac = 0; 1514 av = NULL; 1515 bp = NULL; 1516 } 1517 cp = Check_Cwd_av(ac, av, 1); 1518 if (bp) 1519 free(bp); 1520 if (av) 1521 free(av); 1522 return cp; 1523 } 1524 1525 void 1526 Check_Cwd(const char **argv) 1527 { 1528 char *cp; 1529 int ac; 1530 1531 if (Check_Cwd_Off) 1532 return; 1533 1534 for (ac = 0; argv[ac] != NULL; ++ac) 1535 /* NOTHING */; 1536 if (ac == 3 && *argv[1] == '-') { 1537 cp = Check_Cwd_Cmd(argv[2]); 1538 } else { 1539 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1540 } 1541 if (cp) { 1542 chdir(cp); 1543 } 1544 } 1545 1546 /*- 1547 * Cmd_Exec -- 1548 * Execute the command in cmd, and return the output of that command 1549 * in a string. 1550 * 1551 * Results: 1552 * A string containing the output of the command, or the empty string 1553 * If errnum is not NULL, it contains the reason for the command failure 1554 * 1555 * Side Effects: 1556 * The string must be freed by the caller. 1557 */ 1558 char * 1559 Cmd_Exec(const char *cmd, const char **errnum) 1560 { 1561 const char *args[4]; /* Args for invoking the shell */ 1562 int fds[2]; /* Pipe streams */ 1563 int cpid; /* Child PID */ 1564 int pid; /* PID from wait() */ 1565 char *res; /* result */ 1566 int status; /* command exit status */ 1567 Buffer buf; /* buffer to store the result */ 1568 char *cp; 1569 int cc; 1570 1571 1572 *errnum = NULL; 1573 1574 if (!shellName) 1575 Shell_Init(); 1576 /* 1577 * Set up arguments for shell 1578 */ 1579 args[0] = shellName; 1580 args[1] = "-c"; 1581 args[2] = cmd; 1582 args[3] = NULL; 1583 1584 /* 1585 * Open a pipe for fetching its output 1586 */ 1587 if (pipe(fds) == -1) { 1588 *errnum = "Couldn't create pipe for \"%s\""; 1589 goto bad; 1590 } 1591 1592 /* 1593 * Fork 1594 */ 1595 switch (cpid = vFork()) { 1596 case 0: 1597 /* 1598 * Close input side of pipe 1599 */ 1600 (void)close(fds[0]); 1601 1602 /* 1603 * Duplicate the output stream to the shell's output, then 1604 * shut the extra thing down. Note we don't fetch the error 1605 * stream...why not? Why? 1606 */ 1607 (void)dup2(fds[1], 1); 1608 (void)close(fds[1]); 1609 1610 Var_ExportVars(); 1611 1612 (void)execv(shellPath, UNCONST(args)); 1613 _exit(1); 1614 /*NOTREACHED*/ 1615 1616 case -1: 1617 *errnum = "Couldn't exec \"%s\""; 1618 goto bad; 1619 1620 default: 1621 /* 1622 * No need for the writing half 1623 */ 1624 (void)close(fds[1]); 1625 1626 Buf_Init(&buf, 0); 1627 1628 do { 1629 char result[BUFSIZ]; 1630 cc = read(fds[0], result, sizeof(result)); 1631 if (cc > 0) 1632 Buf_AddBytes(&buf, cc, result); 1633 } 1634 while (cc > 0 || (cc == -1 && errno == EINTR)); 1635 1636 /* 1637 * Close the input side of the pipe. 1638 */ 1639 (void)close(fds[0]); 1640 1641 /* 1642 * Wait for the process to exit. 1643 */ 1644 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) 1645 continue; 1646 1647 cc = Buf_Size(&buf); 1648 res = Buf_Destroy(&buf, FALSE); 1649 1650 if (cc == 0) 1651 *errnum = "Couldn't read shell's output for \"%s\""; 1652 1653 if (WIFSIGNALED(status)) 1654 *errnum = "\"%s\" exited on a signal"; 1655 else if (WEXITSTATUS(status) != 0) 1656 *errnum = "\"%s\" returned non-zero status"; 1657 1658 /* 1659 * Null-terminate the result, convert newlines to spaces and 1660 * install it in the variable. 1661 */ 1662 res[cc] = '\0'; 1663 cp = &res[cc]; 1664 1665 if (cc > 0 && *--cp == '\n') { 1666 /* 1667 * A final newline is just stripped 1668 */ 1669 *cp-- = '\0'; 1670 } 1671 while (cp >= res) { 1672 if (*cp == '\n') { 1673 *cp = ' '; 1674 } 1675 cp--; 1676 } 1677 break; 1678 } 1679 return res; 1680 bad: 1681 res = bmake_malloc(1); 1682 *res = '\0'; 1683 return res; 1684 } 1685 1686 /*- 1687 * Error -- 1688 * Print an error message given its format. 1689 * 1690 * Results: 1691 * None. 1692 * 1693 * Side Effects: 1694 * The message is printed. 1695 */ 1696 /* VARARGS */ 1697 void 1698 Error(const char *fmt, ...) 1699 { 1700 va_list ap; 1701 FILE *err_file; 1702 1703 err_file = debug_file; 1704 if (err_file == stdout) 1705 err_file = stderr; 1706 (void)fflush(stdout); 1707 for (;;) { 1708 va_start(ap, fmt); 1709 fprintf(err_file, "%s: ", progname); 1710 (void)vfprintf(err_file, fmt, ap); 1711 va_end(ap); 1712 (void)fprintf(err_file, "\n"); 1713 (void)fflush(err_file); 1714 if (err_file == stderr) 1715 break; 1716 err_file = stderr; 1717 } 1718 } 1719 1720 /*- 1721 * Fatal -- 1722 * Produce a Fatal error message. If jobs are running, waits for them 1723 * to finish. 1724 * 1725 * Results: 1726 * None 1727 * 1728 * Side Effects: 1729 * The program exits 1730 */ 1731 /* VARARGS */ 1732 void 1733 Fatal(const char *fmt, ...) 1734 { 1735 va_list ap; 1736 1737 va_start(ap, fmt); 1738 if (jobsRunning) 1739 Job_Wait(); 1740 1741 (void)fflush(stdout); 1742 (void)vfprintf(stderr, fmt, ap); 1743 va_end(ap); 1744 (void)fprintf(stderr, "\n"); 1745 (void)fflush(stderr); 1746 1747 PrintOnError(NULL, NULL); 1748 1749 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1750 Targ_PrintGraph(2); 1751 Trace_Log(MAKEERROR, 0); 1752 exit(2); /* Not 1 so -q can distinguish error */ 1753 } 1754 1755 /* 1756 * Punt -- 1757 * Major exception once jobs are being created. Kills all jobs, prints 1758 * a message and exits. 1759 * 1760 * Results: 1761 * None 1762 * 1763 * Side Effects: 1764 * All children are killed indiscriminately and the program Lib_Exits 1765 */ 1766 /* VARARGS */ 1767 void 1768 Punt(const char *fmt, ...) 1769 { 1770 va_list ap; 1771 1772 va_start(ap, fmt); 1773 (void)fflush(stdout); 1774 (void)fprintf(stderr, "%s: ", progname); 1775 (void)vfprintf(stderr, fmt, ap); 1776 va_end(ap); 1777 (void)fprintf(stderr, "\n"); 1778 (void)fflush(stderr); 1779 1780 PrintOnError(NULL, NULL); 1781 1782 DieHorribly(); 1783 } 1784 1785 /*- 1786 * DieHorribly -- 1787 * Exit without giving a message. 1788 * 1789 * Results: 1790 * None 1791 * 1792 * Side Effects: 1793 * A big one... 1794 */ 1795 void 1796 DieHorribly(void) 1797 { 1798 if (jobsRunning) 1799 Job_AbortAll(); 1800 if (DEBUG(GRAPH2)) 1801 Targ_PrintGraph(2); 1802 Trace_Log(MAKEERROR, 0); 1803 exit(2); /* Not 1, so -q can distinguish error */ 1804 } 1805 1806 /* 1807 * Finish -- 1808 * Called when aborting due to errors in child shell to signal 1809 * abnormal exit. 1810 * 1811 * Results: 1812 * None 1813 * 1814 * Side Effects: 1815 * The program exits 1816 */ 1817 void 1818 Finish(int errors) 1819 /* number of errors encountered in Make_Make */ 1820 { 1821 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1822 } 1823 1824 /* 1825 * enunlink -- 1826 * Remove a file carefully, avoiding directories. 1827 */ 1828 int 1829 eunlink(const char *file) 1830 { 1831 struct stat st; 1832 1833 if (lstat(file, &st) == -1) 1834 return -1; 1835 1836 if (S_ISDIR(st.st_mode)) { 1837 errno = EISDIR; 1838 return -1; 1839 } 1840 return unlink(file); 1841 } 1842 1843 /* 1844 * execError -- 1845 * Print why exec failed, avoiding stdio. 1846 */ 1847 void 1848 execError(const char *af, const char *av) 1849 { 1850 #ifdef USE_IOVEC 1851 int i = 0; 1852 struct iovec iov[8]; 1853 #define IOADD(s) \ 1854 (void)(iov[i].iov_base = UNCONST(s), \ 1855 iov[i].iov_len = strlen(iov[i].iov_base), \ 1856 i++) 1857 #else 1858 #define IOADD(void)write(2, s, strlen(s)) 1859 #endif 1860 1861 IOADD(progname); 1862 IOADD(": "); 1863 IOADD(af); 1864 IOADD("("); 1865 IOADD(av); 1866 IOADD(") failed ("); 1867 IOADD(strerror(errno)); 1868 IOADD(")\n"); 1869 1870 #ifdef USE_IOVEC 1871 (void)writev(2, iov, 8); 1872 #endif 1873 } 1874 1875 /* 1876 * usage -- 1877 * exit with usage message 1878 */ 1879 static void 1880 usage(void) 1881 { 1882 (void)fprintf(stderr, 1883 "usage: %s [-BeikNnqrstWX] \n\ 1884 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1885 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1886 [-V variable] [variable=value] [target ...]\n", progname); 1887 exit(2); 1888 } 1889 1890 1891 int 1892 PrintAddr(void *a, void *b) 1893 { 1894 printf("%lx ", (unsigned long) a); 1895 return b ? 0 : 0; 1896 } 1897 1898 1899 1900 void 1901 PrintOnError(GNode *gn, const char *s) 1902 { 1903 static GNode *en = NULL; 1904 char tmp[64]; 1905 char *cp; 1906 1907 if (s) 1908 printf("%s", s); 1909 1910 printf("\n%s: stopped in %s\n", progname, curdir); 1911 1912 if (en) 1913 return; /* we've been here! */ 1914 if (gn) { 1915 /* 1916 * We can print this even if there is no .ERROR target. 1917 */ 1918 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1919 } 1920 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1921 sizeof(tmp) - 1); 1922 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1923 if (cp) { 1924 if (*cp) 1925 printf("%s", cp); 1926 free(cp); 1927 } 1928 /* 1929 * Finally, see if there is a .ERROR target, and run it if so. 1930 */ 1931 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1932 if (en) { 1933 en->type |= OP_SPECIAL; 1934 Compat_Make(en, en); 1935 } 1936 } 1937 1938 void 1939 Main_ExportMAKEFLAGS(Boolean first) 1940 { 1941 static int once = 1; 1942 char tmp[64]; 1943 char *s; 1944 1945 if (once != first) 1946 return; 1947 once = 0; 1948 1949 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1950 sizeof(tmp)); 1951 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1952 if (s && *s) { 1953 #ifdef POSIX 1954 setenv("MAKEFLAGS", s, 1); 1955 #else 1956 setenv("MAKE", s, 1); 1957 #endif 1958 } 1959 } 1960 1961 /* 1962 * Create and open a temp file using "pattern". 1963 * If "fnamep" is provided set it to a copy of the filename created. 1964 * Otherwise unlink the file once open. 1965 */ 1966 int 1967 mkTempFile(const char *pattern, char **fnamep) 1968 { 1969 static char *tmpdir = NULL; 1970 char tfile[MAXPATHLEN]; 1971 int fd; 1972 1973 if (!pattern) 1974 pattern = TMPPAT; 1975 1976 if (!tmpdir) { 1977 struct stat st; 1978 1979 /* 1980 * Honor $TMPDIR but only if it is valid. 1981 * Ensure it ends with /. 1982 */ 1983 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1984 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1985 free(tmpdir); 1986 tmpdir = bmake_strdup(_PATH_TMP); 1987 } 1988 } 1989 if (pattern[0] == '/') { 1990 snprintf(tfile, sizeof(tfile), "%s", pattern); 1991 } else { 1992 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1993 } 1994 if ((fd = mkstemp(tfile)) < 0) 1995 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1996 if (fnamep) { 1997 *fnamep = bmake_strdup(tfile); 1998 } else { 1999 unlink(tfile); /* we just want the descriptor */ 2000 } 2001 return fd; 2002 } 2003
Indexes created Mon Sep 22 21:09:42 GMT 2025