main.c revision 1.177
1 /* $NetBSD: main.c,v 1.177 2010/04/08 17:41:29 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 1.177 2010/04/08 17:41:29 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 1.177 2010/04/08 17:41:29 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; 188 189 Boolean forceJobs = FALSE; 190 191 extern Lst parseIncPath; 192 193 static void 194 parse_debug_options(const char *argvalue) 195 { 196 const char *modules; 197 const char *mode; 198 char *fname; 199 int len; 200 201 for (modules = argvalue; *modules; ++modules) { 202 switch (*modules) { 203 case 'A': 204 debug = ~0; 205 break; 206 case 'a': 207 debug |= DEBUG_ARCH; 208 break; 209 case 'C': 210 debug |= DEBUG_CWD; 211 break; 212 case 'c': 213 debug |= DEBUG_COND; 214 break; 215 case 'd': 216 debug |= DEBUG_DIR; 217 break; 218 case 'e': 219 debug |= DEBUG_ERROR; 220 break; 221 case 'f': 222 debug |= DEBUG_FOR; 223 break; 224 case 'g': 225 if (modules[1] == '1') { 226 debug |= DEBUG_GRAPH1; 227 ++modules; 228 } 229 else if (modules[1] == '2') { 230 debug |= DEBUG_GRAPH2; 231 ++modules; 232 } 233 else if (modules[1] == '3') { 234 debug |= DEBUG_GRAPH3; 235 ++modules; 236 } 237 break; 238 case 'j': 239 debug |= DEBUG_JOB; 240 break; 241 case 'l': 242 debug |= DEBUG_LOUD; 243 break; 244 case 'm': 245 debug |= DEBUG_MAKE; 246 break; 247 case 'n': 248 debug |= DEBUG_SCRIPT; 249 break; 250 case 'p': 251 debug |= DEBUG_PARSE; 252 break; 253 case 's': 254 debug |= DEBUG_SUFF; 255 break; 256 case 't': 257 debug |= DEBUG_TARG; 258 break; 259 case 'v': 260 debug |= DEBUG_VAR; 261 break; 262 case 'x': 263 debug |= DEBUG_SHELL; 264 break; 265 case 'F': 266 if (debug_file != stdout && debug_file != stderr) 267 fclose(debug_file); 268 if (*++modules == '+') 269 mode = "a"; 270 else 271 mode = "w"; 272 if (strcmp(modules, "stdout") == 0) { 273 debug_file = stdout; 274 goto debug_setbuf; 275 } 276 if (strcmp(modules, "stderr") == 0) { 277 debug_file = stderr; 278 goto debug_setbuf; 279 } 280 len = strlen(modules); 281 fname = malloc(len + 20); 282 memcpy(fname, modules, len + 1); 283 /* Let the filename be modified by the pid */ 284 if (strcmp(fname + len - 3, ".%d") == 0) 285 snprintf(fname + len - 2, 20, "%d", getpid()); 286 debug_file = fopen(fname, mode); 287 if (!debug_file) { 288 fprintf(stderr, "Cannot open debug file %s\n", 289 fname); 290 usage(); 291 } 292 free(fname); 293 goto debug_setbuf; 294 default: 295 (void)fprintf(stderr, 296 "%s: illegal argument to d option -- %c\n", 297 progname, *modules); 298 usage(); 299 } 300 } 301 debug_setbuf: 302 /* 303 * Make the debug_file unbuffered, and make 304 * stdout line buffered (unless debugfile == stdout). 305 */ 306 setvbuf(debug_file, NULL, _IONBF, 0); 307 if (debug_file != stdout) { 308 setvbuf(stdout, NULL, _IOLBF, 0); 309 } 310 } 311 312 /*- 313 * MainParseArgs -- 314 * Parse a given argument vector. Called from main() and from 315 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 316 * 317 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 318 * 319 * Results: 320 * None 321 * 322 * Side Effects: 323 * Various global and local flags will be set depending on the flags 324 * given 325 */ 326 static void 327 MainParseArgs(int argc, char **argv) 328 { 329 char *p; 330 int c = '?'; 331 int arginc; 332 char *argvalue; 333 const char *getopt_def; 334 char *optscan; 335 Boolean inOption, dashDash = FALSE; 336 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 337 338 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst" 339 /* Can't actually use getopt(3) because rescanning is not portable */ 340 341 getopt_def = OPTFLAGS; 342 rearg: 343 inOption = FALSE; 344 optscan = NULL; 345 while(argc > 1) { 346 char *getopt_spec; 347 if(!inOption) 348 optscan = argv[1]; 349 c = *optscan++; 350 arginc = 0; 351 if(inOption) { 352 if(c == '\0') { 353 ++argv; 354 --argc; 355 inOption = FALSE; 356 continue; 357 } 358 } else { 359 if (c != '-' || dashDash) 360 break; 361 inOption = TRUE; 362 c = *optscan++; 363 } 364 /* '-' found at some earlier point */ 365 getopt_spec = strchr(getopt_def, c); 366 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 367 /* -<something> found, and <something> should have an arg */ 368 inOption = FALSE; 369 arginc = 1; 370 argvalue = optscan; 371 if(*argvalue == '\0') { 372 if (argc < 3) 373 goto noarg; 374 argvalue = argv[2]; 375 arginc = 2; 376 } 377 } else { 378 argvalue = NULL; 379 } 380 switch(c) { 381 case '\0': 382 arginc = 1; 383 inOption = FALSE; 384 break; 385 case 'B': 386 compatMake = TRUE; 387 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 388 break; 389 case 'C': 390 if (chdir(argvalue) == -1) { 391 (void)fprintf(stderr, 392 "%s: chdir %s: %s\n", 393 progname, argvalue, 394 strerror(errno)); 395 exit(1); 396 } 397 if (getcwd(curdir, MAXPATHLEN) == NULL) { 398 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 399 exit(2); 400 } 401 ignorePWD = TRUE; 402 break; 403 case 'D': 404 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 405 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 406 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 407 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 408 break; 409 case 'I': 410 if (argvalue == NULL) goto noarg; 411 Parse_AddIncludeDir(argvalue); 412 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 413 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 414 break; 415 case 'J': 416 if (argvalue == NULL) goto noarg; 417 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 418 (void)fprintf(stderr, 419 "%s: internal error -- J option malformed (%s)\n", 420 progname, argvalue); 421 usage(); 422 } 423 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 424 (fcntl(jp_1, F_GETFD, 0) < 0)) { 425 #if 0 426 (void)fprintf(stderr, 427 "%s: ###### warning -- J descriptors were closed!\n", 428 progname); 429 exit(2); 430 #endif 431 jp_0 = -1; 432 jp_1 = -1; 433 compatMake = TRUE; 434 } else { 435 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 436 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 437 jobServer = TRUE; 438 } 439 break; 440 case 'N': 441 noExecute = TRUE; 442 noRecursiveExecute = TRUE; 443 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 444 break; 445 case 'S': 446 keepgoing = FALSE; 447 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 448 break; 449 case 'T': 450 if (argvalue == NULL) goto noarg; 451 tracefile = bmake_strdup(argvalue); 452 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 453 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 454 break; 455 case 'V': 456 if (argvalue == NULL) goto noarg; 457 printVars = TRUE; 458 (void)Lst_AtEnd(variables, argvalue); 459 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 460 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 461 break; 462 case 'W': 463 parseWarnFatal = TRUE; 464 break; 465 case 'X': 466 varNoExportEnv = TRUE; 467 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 468 break; 469 case 'd': 470 if (argvalue == NULL) goto noarg; 471 /* If '-d-opts' don't pass to children */ 472 if (argvalue[0] == '-') 473 argvalue++; 474 else { 475 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 476 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 477 } 478 parse_debug_options(argvalue); 479 break; 480 case 'e': 481 checkEnvFirst = TRUE; 482 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 483 break; 484 case 'f': 485 if (argvalue == NULL) goto noarg; 486 (void)Lst_AtEnd(makefiles, argvalue); 487 break; 488 case 'i': 489 ignoreErrors = TRUE; 490 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 491 break; 492 case 'j': 493 if (argvalue == NULL) goto noarg; 494 forceJobs = TRUE; 495 maxJobs = strtol(argvalue, &p, 0); 496 if (*p != '\0' || maxJobs < 1) { 497 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 498 progname); 499 exit(1); 500 } 501 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 502 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 503 maxJobTokens = maxJobs; 504 break; 505 case 'k': 506 keepgoing = TRUE; 507 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 508 break; 509 case 'm': 510 if (argvalue == NULL) goto noarg; 511 /* look for magic parent directory search string */ 512 if (strncmp(".../", argvalue, 4) == 0) { 513 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 514 found_path, sizeof(found_path))) 515 break; /* nothing doing */ 516 (void)Dir_AddDir(sysIncPath, found_path); 517 } else { 518 (void)Dir_AddDir(sysIncPath, argvalue); 519 } 520 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 521 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 522 break; 523 case 'n': 524 noExecute = TRUE; 525 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 526 break; 527 case 'q': 528 queryFlag = TRUE; 529 /* Kind of nonsensical, wot? */ 530 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 531 break; 532 case 'r': 533 noBuiltins = TRUE; 534 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 535 break; 536 case 's': 537 beSilent = TRUE; 538 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 539 break; 540 case 't': 541 touchFlag = TRUE; 542 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 543 break; 544 case '-': 545 dashDash = TRUE; 546 break; 547 default: 548 case '?': 549 usage(); 550 } 551 argv += arginc; 552 argc -= arginc; 553 } 554 555 oldVars = TRUE; 556 557 /* 558 * See if the rest of the arguments are variable assignments and 559 * perform them if so. Else take them to be targets and stuff them 560 * on the end of the "create" list. 561 */ 562 for (; argc > 1; ++argv, --argc) 563 if (Parse_IsVar(argv[1])) { 564 Parse_DoVar(argv[1], VAR_CMD); 565 } else { 566 if (!*argv[1]) 567 Punt("illegal (null) argument."); 568 if (*argv[1] == '-' && !dashDash) 569 goto rearg; 570 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 571 } 572 573 return; 574 noarg: 575 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 576 progname, c); 577 usage(); 578 } 579 580 /*- 581 * Main_ParseArgLine -- 582 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 583 * is encountered and by main() when reading the .MAKEFLAGS envariable. 584 * Takes a line of arguments and breaks it into its 585 * component words and passes those words and the number of them to the 586 * MainParseArgs function. 587 * The line should have all its leading whitespace removed. 588 * 589 * Input: 590 * line Line to fracture 591 * 592 * Results: 593 * None 594 * 595 * Side Effects: 596 * Only those that come from the various arguments. 597 */ 598 void 599 Main_ParseArgLine(const char *line) 600 { 601 char **argv; /* Manufactured argument vector */ 602 int argc; /* Number of arguments in argv */ 603 char *args; /* Space used by the args */ 604 char *buf, *p1; 605 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 606 size_t len; 607 608 if (line == NULL) 609 return; 610 for (; *line == ' '; ++line) 611 continue; 612 if (!*line) 613 return; 614 615 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 616 (void)snprintf(buf, len, "%s %s", argv0, line); 617 if (p1) 618 free(p1); 619 620 argv = brk_string(buf, &argc, TRUE, &args); 621 if (argv == NULL) { 622 Error("Unterminated quoted string [%s]", buf); 623 free(buf); 624 return; 625 } 626 free(buf); 627 MainParseArgs(argc, argv); 628 629 free(args); 630 free(argv); 631 } 632 633 Boolean 634 Main_SetObjdir(const char *path) 635 { 636 struct stat sb; 637 char *p = NULL; 638 char buf[MAXPATHLEN + 1]; 639 Boolean rc = FALSE; 640 641 /* expand variable substitutions */ 642 if (strchr(path, '$') != 0) { 643 snprintf(buf, MAXPATHLEN, "%s", path); 644 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 645 } 646 647 if (path[0] != '/') { 648 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 649 path = buf; 650 } 651 652 /* look for the directory and try to chdir there */ 653 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 654 if (chdir(path)) { 655 (void)fprintf(stderr, "make warning: %s: %s.\n", 656 path, strerror(errno)); 657 } else { 658 strncpy(objdir, path, MAXPATHLEN); 659 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 660 setenv("PWD", objdir, 1); 661 Dir_InitDot(); 662 rc = TRUE; 663 } 664 } 665 666 if (p) 667 free(p); 668 return rc; 669 } 670 671 /*- 672 * ReadAllMakefiles -- 673 * wrapper around ReadMakefile() to read all. 674 * 675 * Results: 676 * TRUE if ok, FALSE on error 677 */ 678 static int 679 ReadAllMakefiles(const void *p, const void *q) 680 { 681 return (ReadMakefile(p, q) == 0); 682 } 683 684 static int 685 str2Lst_Append(Lst lp, char *str, const char *sep) 686 { 687 char *cp; 688 int n; 689 690 if (!sep) 691 sep = " \t"; 692 693 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 694 (void)Lst_AtEnd(lp, cp); 695 n++; 696 } 697 return (n); 698 } 699 700 #ifdef SIGINFO 701 /*ARGSUSED*/ 702 static void 703 siginfo(int signo) 704 { 705 char dir[MAXPATHLEN]; 706 char str[2 * MAXPATHLEN]; 707 int len; 708 if (getcwd(dir, sizeof(dir)) == NULL) 709 return; 710 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 711 if (len > 0) 712 (void)write(STDERR_FILENO, str, (size_t)len); 713 } 714 #endif 715 716 /* 717 * Allow makefiles some control over the mode we run in. 718 */ 719 void 720 MakeMode(const char *mode) 721 { 722 char *mp = NULL; 723 724 if (!mode) 725 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 726 727 if (mode && *mode) { 728 if (strstr(mode, "compat")) { 729 compatMake = TRUE; 730 forceJobs = FALSE; 731 } 732 } 733 if (mp) 734 free(mp); 735 } 736 737 /*- 738 * main -- 739 * The main function, for obvious reasons. Initializes variables 740 * and a few modules, then parses the arguments give it in the 741 * environment and on the command line. Reads the system makefile 742 * followed by either Makefile, makefile or the file given by the 743 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 744 * flags it has received by then uses either the Make or the Compat 745 * module to create the initial list of targets. 746 * 747 * Results: 748 * If -q was given, exits -1 if anything was out-of-date. Else it exits 749 * 0. 750 * 751 * Side Effects: 752 * The program exits when done. Targets are created. etc. etc. etc. 753 */ 754 int 755 main(int argc, char **argv) 756 { 757 Lst targs; /* target nodes to create -- passed to Make_Init */ 758 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 759 struct stat sb, sa; 760 char *p1, *path, *pwd; 761 char mdpath[MAXPATHLEN]; 762 char *machine = getenv("MACHINE"); 763 const char *machine_arch = getenv("MACHINE_ARCH"); 764 char *syspath = getenv("MAKESYSPATH"); 765 Lst sysMkPath; /* Path of sys.mk */ 766 char *cp = NULL, *start; 767 /* avoid faults on read-only strings */ 768 static char defsyspath[] = _PATH_DEFSYSPATH; 769 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 770 struct timeval rightnow; /* to initialize random seed */ 771 #ifdef MAKE_NATIVE 772 struct utsname utsname; 773 #endif 774 775 /* default to writing debug to stderr */ 776 debug_file = stderr; 777 778 #ifdef SIGINFO 779 (void)signal(SIGINFO, siginfo); 780 #endif 781 /* 782 * Set the seed to produce a different random sequence 783 * on each program execution. 784 */ 785 gettimeofday(&rightnow, NULL); 786 srandom(rightnow.tv_sec + rightnow.tv_usec); 787 788 if ((progname = strrchr(argv[0], '/')) != NULL) 789 progname++; 790 else 791 progname = argv[0]; 792 #ifdef RLIMIT_NOFILE 793 /* 794 * get rid of resource limit on file descriptors 795 */ 796 { 797 struct rlimit rl; 798 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 799 rl.rlim_cur != rl.rlim_max) { 800 rl.rlim_cur = rl.rlim_max; 801 (void)setrlimit(RLIMIT_NOFILE, &rl); 802 } 803 } 804 #endif 805 806 /* 807 * Get the name of this type of MACHINE from utsname 808 * so we can share an executable for similar machines. 809 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 810 * 811 * Note that both MACHINE and MACHINE_ARCH are decided at 812 * run-time. 813 */ 814 if (!machine) { 815 #ifdef MAKE_NATIVE 816 if (uname(&utsname) == -1) { 817 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 818 strerror(errno)); 819 exit(2); 820 } 821 machine = utsname.machine; 822 #else 823 #ifdef MAKE_MACHINE 824 machine = MAKE_MACHINE; 825 #else 826 machine = "unknown"; 827 #endif 828 #endif 829 } 830 831 if (!machine_arch) { 832 #ifndef MACHINE_ARCH 833 #ifdef MAKE_MACHINE_ARCH 834 machine_arch = MAKE_MACHINE_ARCH; 835 #else 836 machine_arch = "unknown"; 837 #endif 838 #else 839 machine_arch = MACHINE_ARCH; 840 #endif 841 } 842 843 /* 844 * Just in case MAKEOBJDIR wants us to do something tricky. 845 */ 846 Var_Init(); /* Initialize the lists of variables for 847 * parsing arguments */ 848 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 849 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 850 #ifdef MAKE_VERSION 851 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 852 #endif 853 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 854 /* 855 * This is the traditional preference for makefiles. 856 */ 857 #ifndef MAKEFILE_PREFERENCE_LIST 858 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 859 #endif 860 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 861 VAR_GLOBAL, 0); 862 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 863 864 create = Lst_Init(FALSE); 865 makefiles = Lst_Init(FALSE); 866 printVars = FALSE; 867 variables = Lst_Init(FALSE); 868 beSilent = FALSE; /* Print commands as executed */ 869 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 870 noExecute = FALSE; /* Execute all commands */ 871 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 872 keepgoing = FALSE; /* Stop on error */ 873 allPrecious = FALSE; /* Remove targets when interrupted */ 874 queryFlag = FALSE; /* This is not just a check-run */ 875 noBuiltins = FALSE; /* Read the built-in rules */ 876 touchFlag = FALSE; /* Actually update targets */ 877 debug = 0; /* No debug verbosity, please. */ 878 jobsRunning = FALSE; 879 880 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 881 maxJobTokens = maxJobs; 882 compatMake = FALSE; /* No compat mode */ 883 ignorePWD = FALSE; 884 885 /* 886 * Initialize the parsing, directory and variable modules to prepare 887 * for the reading of inclusion paths and variable settings on the 888 * command line 889 */ 890 891 /* 892 * Initialize various variables. 893 * MAKE also gets this name, for compatibility 894 * .MAKEFLAGS gets set to the empty string just in case. 895 * MFLAGS also gets initialized empty, for compatibility. 896 */ 897 Parse_Init(); 898 Var_Set("MAKE", argv[0], VAR_GLOBAL, 0); 899 Var_Set(".MAKE", argv[0], VAR_GLOBAL, 0); 900 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 901 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 902 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 903 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 904 905 /* 906 * Set some other useful macros 907 */ 908 { 909 char tmp[64]; 910 const char *ep; 911 912 if (!(ep = getenv(MAKE_LEVEL))) { 913 ep = "0"; 914 } 915 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0); 916 snprintf(tmp, sizeof(tmp), "%u", getpid()); 917 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 918 snprintf(tmp, sizeof(tmp), "%u", getppid()); 919 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 920 } 921 Job_SetPrefix(); 922 923 /* 924 * First snag any flags out of the MAKE environment variable. 925 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 926 * in a different format). 927 */ 928 #ifdef POSIX 929 Main_ParseArgLine(getenv("MAKEFLAGS")); 930 #else 931 Main_ParseArgLine(getenv("MAKE")); 932 #endif 933 934 /* 935 * Find where we are (now). 936 * We take care of PWD for the automounter below... 937 */ 938 if (getcwd(curdir, MAXPATHLEN) == NULL) { 939 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 940 exit(2); 941 } 942 943 MainParseArgs(argc, argv); 944 945 /* 946 * Verify that cwd is sane. 947 */ 948 if (stat(curdir, &sa) == -1) { 949 (void)fprintf(stderr, "%s: %s: %s.\n", 950 progname, curdir, strerror(errno)); 951 exit(2); 952 } 953 954 /* 955 * All this code is so that we know where we are when we start up 956 * on a different machine with pmake. 957 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 958 * since the value of curdir can vary depending on how we got 959 * here. Ie sitting at a shell prompt (shell that provides $PWD) 960 * or via subdir.mk in which case its likely a shell which does 961 * not provide it. 962 * So, to stop it breaking this case only, we ignore PWD if 963 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 964 */ 965 if (!ignorePWD && 966 (pwd = getenv("PWD")) != NULL && 967 getenv("MAKEOBJDIRPREFIX") == NULL) { 968 const char *makeobjdir = getenv("MAKEOBJDIR"); 969 970 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 971 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 972 sa.st_dev == sb.st_dev) 973 (void)strncpy(curdir, pwd, MAXPATHLEN); 974 } 975 } 976 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 977 978 /* 979 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 980 * MAKEOBJDIR is set in the environment, try only that value 981 * and fall back to .CURDIR if it does not exist. 982 * 983 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 984 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 985 * of these paths exist, just use .CURDIR. 986 */ 987 Dir_Init(curdir); 988 (void)Main_SetObjdir(curdir); 989 990 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 991 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 992 (void)Main_SetObjdir(mdpath); 993 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 994 (void)Main_SetObjdir(path); 995 } else { 996 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 997 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 998 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 999 _PATH_OBJDIRPREFIX, curdir); 1000 (void)Main_SetObjdir(mdpath); 1001 } 1002 } 1003 1004 /* 1005 * Be compatible if user did not specify -j and did not explicitly 1006 * turned compatibility on 1007 */ 1008 if (!compatMake && !forceJobs) { 1009 compatMake = TRUE; 1010 } 1011 1012 /* 1013 * Initialize archive, target and suffix modules in preparation for 1014 * parsing the makefile(s) 1015 */ 1016 Arch_Init(); 1017 Targ_Init(); 1018 Suff_Init(); 1019 Trace_Init(tracefile); 1020 1021 DEFAULT = NULL; 1022 (void)time(&now); 1023 1024 Trace_Log(MAKESTART, NULL); 1025 1026 /* 1027 * Set up the .TARGETS variable to contain the list of targets to be 1028 * created. If none specified, make the variable empty -- the parser 1029 * will fill the thing in with the default or .MAIN target. 1030 */ 1031 if (!Lst_IsEmpty(create)) { 1032 LstNode ln; 1033 1034 for (ln = Lst_First(create); ln != NULL; 1035 ln = Lst_Succ(ln)) { 1036 char *name = (char *)Lst_Datum(ln); 1037 1038 Var_Append(".TARGETS", name, VAR_GLOBAL); 1039 } 1040 } else 1041 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1042 1043 1044 /* 1045 * If no user-supplied system path was given (through the -m option) 1046 * add the directories from the DEFSYSPATH (more than one may be given 1047 * as dir1:...:dirn) to the system include path. 1048 */ 1049 if (syspath == NULL || *syspath == '\0') 1050 syspath = defsyspath; 1051 else 1052 syspath = bmake_strdup(syspath); 1053 1054 for (start = syspath; *start != '\0'; start = cp) { 1055 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1056 continue; 1057 if (*cp == ':') { 1058 *cp++ = '\0'; 1059 } 1060 /* look for magic parent directory search string */ 1061 if (strncmp(".../", start, 4) != 0) { 1062 (void)Dir_AddDir(defIncPath, start); 1063 } else { 1064 if (Dir_FindHereOrAbove(curdir, start+4, 1065 found_path, sizeof(found_path))) { 1066 (void)Dir_AddDir(defIncPath, found_path); 1067 } 1068 } 1069 } 1070 if (syspath != defsyspath) 1071 free(syspath); 1072 1073 /* 1074 * Read in the built-in rules first, followed by the specified 1075 * makefile, if it was (makefile != NULL), or the default 1076 * makefile and Makefile, in that order, if it wasn't. 1077 */ 1078 if (!noBuiltins) { 1079 LstNode ln; 1080 1081 sysMkPath = Lst_Init(FALSE); 1082 Dir_Expand(_PATH_DEFSYSMK, 1083 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1084 sysMkPath); 1085 if (Lst_IsEmpty(sysMkPath)) 1086 Fatal("%s: no system rules (%s).", progname, 1087 _PATH_DEFSYSMK); 1088 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1089 if (ln == NULL) 1090 Fatal("%s: cannot open %s.", progname, 1091 (char *)Lst_Datum(ln)); 1092 } 1093 1094 if (!Lst_IsEmpty(makefiles)) { 1095 LstNode ln; 1096 1097 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1098 if (ln != NULL) 1099 Fatal("%s: cannot open %s.", progname, 1100 (char *)Lst_Datum(ln)); 1101 } else { 1102 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1103 VAR_CMD, 0); 1104 if (p1) { 1105 (void)str2Lst_Append(makefiles, p1, NULL); 1106 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1107 free(p1); 1108 } 1109 } 1110 1111 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1112 if (!noBuiltins || !printVars) { 1113 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1114 VAR_CMD, 0); 1115 doing_depend = TRUE; 1116 (void)ReadMakefile(makeDependfile, NULL); 1117 doing_depend = FALSE; 1118 } 1119 1120 MakeMode(NULL); 1121 1122 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1123 if (p1) 1124 free(p1); 1125 1126 if (!compatMake) 1127 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1128 if (DEBUG(JOB)) 1129 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1130 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1131 1132 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1133 1134 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1135 1136 1137 /* 1138 * For compatibility, look at the directories in the VPATH variable 1139 * and add them to the search path, if the variable is defined. The 1140 * variable's value is in the same format as the PATH envariable, i.e. 1141 * <directory>:<directory>:<directory>... 1142 */ 1143 if (Var_Exists("VPATH", VAR_CMD)) { 1144 char *vpath, savec; 1145 /* 1146 * GCC stores string constants in read-only memory, but 1147 * Var_Subst will want to write this thing, so store it 1148 * in an array 1149 */ 1150 static char VPATH[] = "${VPATH}"; 1151 1152 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1153 path = vpath; 1154 do { 1155 /* skip to end of directory */ 1156 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1157 continue; 1158 /* Save terminator character so know when to stop */ 1159 savec = *cp; 1160 *cp = '\0'; 1161 /* Add directory to search path */ 1162 (void)Dir_AddDir(dirSearchPath, path); 1163 *cp = savec; 1164 path = cp + 1; 1165 } while (savec == ':'); 1166 free(vpath); 1167 } 1168 1169 /* 1170 * Now that all search paths have been read for suffixes et al, it's 1171 * time to add the default search path to their lists... 1172 */ 1173 Suff_DoPaths(); 1174 1175 /* 1176 * Propagate attributes through :: dependency lists. 1177 */ 1178 Targ_Propagate(); 1179 1180 /* print the initial graph, if the user requested it */ 1181 if (DEBUG(GRAPH1)) 1182 Targ_PrintGraph(1); 1183 1184 /* print the values of any variables requested by the user */ 1185 if (printVars) { 1186 LstNode ln; 1187 1188 for (ln = Lst_First(variables); ln != NULL; 1189 ln = Lst_Succ(ln)) { 1190 char *var = (char *)Lst_Datum(ln); 1191 char *value; 1192 1193 if (strchr(var, '$')) { 1194 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1195 } else { 1196 value = Var_Value(var, VAR_GLOBAL, &p1); 1197 } 1198 printf("%s\n", value ? value : ""); 1199 if (p1) 1200 free(p1); 1201 } 1202 } else { 1203 /* 1204 * Have now read the entire graph and need to make a list of 1205 * targets to create. If none was given on the command line, 1206 * we consult the parsing module to find the main target(s) 1207 * to create. 1208 */ 1209 if (Lst_IsEmpty(create)) 1210 targs = Parse_MainName(); 1211 else 1212 targs = Targ_FindList(create, TARG_CREATE); 1213 1214 if (!compatMake) { 1215 /* 1216 * Initialize job module before traversing the graph 1217 * now that any .BEGIN and .END targets have been read. 1218 * This is done only if the -q flag wasn't given 1219 * (to prevent the .BEGIN from being executed should 1220 * it exist). 1221 */ 1222 if (!queryFlag) { 1223 Job_Init(); 1224 jobsRunning = TRUE; 1225 } 1226 1227 /* Traverse the graph, checking on all the targets */ 1228 outOfDate = Make_Run(targs); 1229 } else { 1230 /* 1231 * Compat_Init will take care of creating all the 1232 * targets as well as initializing the module. 1233 */ 1234 Compat_Run(targs); 1235 } 1236 } 1237 1238 #ifdef CLEANUP 1239 Lst_Destroy(targs, NULL); 1240 Lst_Destroy(variables, NULL); 1241 Lst_Destroy(makefiles, NULL); 1242 Lst_Destroy(create, (FreeProc *)free); 1243 #endif 1244 1245 /* print the graph now it's been processed if the user requested it */ 1246 if (DEBUG(GRAPH2)) 1247 Targ_PrintGraph(2); 1248 1249 Trace_Log(MAKEEND, 0); 1250 1251 Suff_End(); 1252 Targ_End(); 1253 Arch_End(); 1254 Var_End(); 1255 Parse_End(); 1256 Dir_End(); 1257 Job_End(); 1258 Trace_End(); 1259 1260 return outOfDate ? 1 : 0; 1261 } 1262 1263 /*- 1264 * ReadMakefile -- 1265 * Open and parse the given makefile. 1266 * 1267 * Results: 1268 * 0 if ok. -1 if couldn't open file. 1269 * 1270 * Side Effects: 1271 * lots 1272 */ 1273 static int 1274 ReadMakefile(const void *p, const void *q __unused) 1275 { 1276 const char *fname = p; /* makefile to read */ 1277 int fd; 1278 size_t len = MAXPATHLEN; 1279 char *name, *path = bmake_malloc(len); 1280 1281 if (!strcmp(fname, "-")) { 1282 Parse_File("(stdin)", dup(fileno(stdin))); 1283 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1284 } else { 1285 /* if we've chdir'd, rebuild the path name */ 1286 if (strcmp(curdir, objdir) && *fname != '/') { 1287 size_t plen = strlen(curdir) + strlen(fname) + 2; 1288 if (len < plen) 1289 path = bmake_realloc(path, len = 2 * plen); 1290 1291 (void)snprintf(path, len, "%s/%s", curdir, fname); 1292 fd = open(path, O_RDONLY); 1293 if (fd != -1) { 1294 fname = path; 1295 goto found; 1296 } 1297 1298 /* If curdir failed, try objdir (ala .depend) */ 1299 plen = strlen(objdir) + strlen(fname) + 2; 1300 if (len < plen) 1301 path = bmake_realloc(path, len = 2 * plen); 1302 (void)snprintf(path, len, "%s/%s", objdir, fname); 1303 fd = open(path, O_RDONLY); 1304 if (fd != -1) { 1305 fname = path; 1306 goto found; 1307 } 1308 } else { 1309 fd = open(fname, O_RDONLY); 1310 if (fd != -1) 1311 goto found; 1312 } 1313 /* look in -I and system include directories. */ 1314 name = Dir_FindFile(fname, parseIncPath); 1315 if (!name) 1316 name = Dir_FindFile(fname, 1317 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1318 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1319 if (name) 1320 free(name); 1321 free(path); 1322 return(-1); 1323 } 1324 fname = name; 1325 /* 1326 * set the MAKEFILE variable desired by System V fans -- the 1327 * placement of the setting here means it gets set to the last 1328 * makefile specified, as it is set by SysV make. 1329 */ 1330 found: 1331 if (!doing_depend) 1332 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1333 Parse_File(fname, fd); 1334 } 1335 free(path); 1336 return(0); 1337 } 1338 1339 1340 /* 1341 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1342 * in situations that would not arrise with ./obj (links or not). 1343 * This tends to break things like: 1344 * 1345 * build: 1346 * ${MAKE} includes 1347 * 1348 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1349 * opposed to an argument) in a command line and if so returns 1350 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1351 * the Makefile hold true. 1352 * 1353 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1354 * 1355 * The chdir() only happens in the child process, and does nothing if 1356 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1357 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1358 * do nothing - to ensure historic semantics can be retained. 1359 */ 1360 static int Check_Cwd_Off = 0; 1361 1362 static char * 1363 Check_Cwd_av(int ac, char **av, int copy) 1364 { 1365 static char *make[4]; 1366 static char *cur_dir = NULL; 1367 char **mp; 1368 char *cp; 1369 int is_cmd, next_cmd; 1370 int i; 1371 int n; 1372 1373 if (Check_Cwd_Off) { 1374 if (DEBUG(CWD)) 1375 fprintf(debug_file, "check_cwd: check is off.\n"); 1376 return NULL; 1377 } 1378 1379 if (make[0] == NULL) { 1380 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1381 Check_Cwd_Off = 1; 1382 if (DEBUG(CWD)) 1383 fprintf(debug_file, "check_cwd: turning check off.\n"); 1384 return NULL; 1385 } 1386 1387 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1388 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1389 make[0] = make[1]; 1390 make[1] = NULL; 1391 } else 1392 ++make[0]; 1393 make[2] = NULL; 1394 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1395 } 1396 if (ac == 0 || av == NULL) { 1397 if (DEBUG(CWD)) 1398 fprintf(debug_file, "check_cwd: empty command.\n"); 1399 return NULL; /* initialization only */ 1400 } 1401 1402 if (getenv("MAKEOBJDIR") == NULL && 1403 getenv("MAKEOBJDIRPREFIX") == NULL) { 1404 if (DEBUG(CWD)) 1405 fprintf(debug_file, "check_cwd: no obj dirs.\n"); 1406 return NULL; 1407 } 1408 1409 1410 next_cmd = 1; 1411 for (i = 0; i < ac; ++i) { 1412 is_cmd = next_cmd; 1413 1414 n = strlen(av[i]); 1415 cp = &(av[i])[n - 1]; 1416 if (strspn(av[i], "|&;") == (size_t)n) { 1417 next_cmd = 1; 1418 continue; 1419 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1420 next_cmd = 1; 1421 if (copy) { 1422 do { 1423 *cp-- = '\0'; 1424 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1425 *cp == ')' || *cp == '}') ; 1426 } else { 1427 /* 1428 * XXX this should not happen. 1429 */ 1430 fprintf(stderr, "%s: WARNING: raw arg ends in shell meta '%s'\n", 1431 progname, av[i]); 1432 } 1433 } else 1434 next_cmd = 0; 1435 1436 cp = av[i]; 1437 if (*cp == ';' || *cp == '&' || *cp == '|') 1438 is_cmd = 1; 1439 1440 if (DEBUG(CWD)) 1441 fprintf(debug_file, "av[%d] == %s '%s'", 1442 i, (is_cmd) ? "cmd" : "arg", av[i]); 1443 if (is_cmd != 0) { 1444 if (*cp == '(' || *cp == '{' || 1445 *cp == ';' || *cp == '&' || *cp == '|') { 1446 do { 1447 ++cp; 1448 } while (*cp == '(' || *cp == '{' || 1449 *cp == ';' || *cp == '&' || *cp == '|'); 1450 if (*cp == '\0') { 1451 next_cmd = 1; 1452 continue; 1453 } 1454 } 1455 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1456 if (DEBUG(CWD)) 1457 fprintf(debug_file, " == cd, done.\n"); 1458 return NULL; 1459 } 1460 for (mp = make; *mp != NULL; ++mp) { 1461 n = strlen(*mp); 1462 if (strcmp(cp, *mp) == 0) { 1463 if (DEBUG(CWD)) 1464 fprintf(debug_file, " %s == '%s', chdir(%s)\n", 1465 cp, *mp, cur_dir); 1466 return cur_dir; 1467 } 1468 } 1469 } 1470 if (DEBUG(CWD)) 1471 fprintf(debug_file, "\n"); 1472 } 1473 return NULL; 1474 } 1475 1476 char * 1477 Check_Cwd_Cmd(const char *cmd) 1478 { 1479 char *cp, *bp; 1480 char **av; 1481 int ac; 1482 1483 if (Check_Cwd_Off) 1484 return NULL; 1485 1486 if (cmd) { 1487 av = brk_string(cmd, &ac, TRUE, &bp); 1488 if (DEBUG(CWD)) 1489 fprintf(debug_file, "splitting: '%s' -> %d words\n", 1490 cmd, ac); 1491 } else { 1492 ac = 0; 1493 av = NULL; 1494 bp = NULL; 1495 } 1496 cp = Check_Cwd_av(ac, av, 1); 1497 if (bp) 1498 free(bp); 1499 if (av) 1500 free(av); 1501 return cp; 1502 } 1503 1504 void 1505 Check_Cwd(const char **argv) 1506 { 1507 char *cp; 1508 int ac; 1509 1510 if (Check_Cwd_Off) 1511 return; 1512 1513 for (ac = 0; argv[ac] != NULL; ++ac) 1514 /* NOTHING */; 1515 if (ac == 3 && *argv[1] == '-') { 1516 cp = Check_Cwd_Cmd(argv[2]); 1517 } else { 1518 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1519 } 1520 if (cp) { 1521 chdir(cp); 1522 } 1523 } 1524 1525 /*- 1526 * Cmd_Exec -- 1527 * Execute the command in cmd, and return the output of that command 1528 * in a string. 1529 * 1530 * Results: 1531 * A string containing the output of the command, or the empty string 1532 * If errnum is not NULL, it contains the reason for the command failure 1533 * 1534 * Side Effects: 1535 * The string must be freed by the caller. 1536 */ 1537 char * 1538 Cmd_Exec(const char *cmd, const char **errnum) 1539 { 1540 const char *args[4]; /* Args for invoking the shell */ 1541 int fds[2]; /* Pipe streams */ 1542 int cpid; /* Child PID */ 1543 int pid; /* PID from wait() */ 1544 char *res; /* result */ 1545 int status; /* command exit status */ 1546 Buffer buf; /* buffer to store the result */ 1547 char *cp; 1548 int cc; 1549 1550 1551 *errnum = NULL; 1552 1553 if (!shellName) 1554 Shell_Init(); 1555 /* 1556 * Set up arguments for shell 1557 */ 1558 args[0] = shellName; 1559 args[1] = "-c"; 1560 args[2] = cmd; 1561 args[3] = NULL; 1562 1563 /* 1564 * Open a pipe for fetching its output 1565 */ 1566 if (pipe(fds) == -1) { 1567 *errnum = "Couldn't create pipe for \"%s\""; 1568 goto bad; 1569 } 1570 1571 /* 1572 * Fork 1573 */ 1574 switch (cpid = vfork()) { 1575 case 0: 1576 /* 1577 * Close input side of pipe 1578 */ 1579 (void)close(fds[0]); 1580 1581 /* 1582 * Duplicate the output stream to the shell's output, then 1583 * shut the extra thing down. Note we don't fetch the error 1584 * stream...why not? Why? 1585 */ 1586 (void)dup2(fds[1], 1); 1587 (void)close(fds[1]); 1588 1589 Var_ExportVars(); 1590 1591 (void)execv(shellPath, UNCONST(args)); 1592 _exit(1); 1593 /*NOTREACHED*/ 1594 1595 case -1: 1596 *errnum = "Couldn't exec \"%s\""; 1597 goto bad; 1598 1599 default: 1600 /* 1601 * No need for the writing half 1602 */ 1603 (void)close(fds[1]); 1604 1605 Buf_Init(&buf, 0); 1606 1607 do { 1608 char result[BUFSIZ]; 1609 cc = read(fds[0], result, sizeof(result)); 1610 if (cc > 0) 1611 Buf_AddBytes(&buf, cc, result); 1612 } 1613 while (cc > 0 || (cc == -1 && errno == EINTR)); 1614 1615 /* 1616 * Close the input side of the pipe. 1617 */ 1618 (void)close(fds[0]); 1619 1620 /* 1621 * Wait for the process to exit. 1622 */ 1623 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) 1624 continue; 1625 1626 cc = Buf_Size(&buf); 1627 res = Buf_Destroy(&buf, FALSE); 1628 1629 if (cc == 0) 1630 *errnum = "Couldn't read shell's output for \"%s\""; 1631 1632 if (WIFSIGNALED(status)) 1633 *errnum = "\"%s\" exited on a signal"; 1634 else if (WEXITSTATUS(status) != 0) 1635 *errnum = "\"%s\" returned non-zero status"; 1636 1637 /* 1638 * Null-terminate the result, convert newlines to spaces and 1639 * install it in the variable. 1640 */ 1641 res[cc] = '\0'; 1642 cp = &res[cc]; 1643 1644 if (cc > 0 && *--cp == '\n') { 1645 /* 1646 * A final newline is just stripped 1647 */ 1648 *cp-- = '\0'; 1649 } 1650 while (cp >= res) { 1651 if (*cp == '\n') { 1652 *cp = ' '; 1653 } 1654 cp--; 1655 } 1656 break; 1657 } 1658 return res; 1659 bad: 1660 res = bmake_malloc(1); 1661 *res = '\0'; 1662 return res; 1663 } 1664 1665 /*- 1666 * Error -- 1667 * Print an error message given its format. 1668 * 1669 * Results: 1670 * None. 1671 * 1672 * Side Effects: 1673 * The message is printed. 1674 */ 1675 /* VARARGS */ 1676 void 1677 Error(const char *fmt, ...) 1678 { 1679 va_list ap; 1680 FILE *err_file; 1681 1682 err_file = debug_file; 1683 if (err_file == stdout) 1684 err_file = stderr; 1685 for (;;) { 1686 va_start(ap, fmt); 1687 fprintf(err_file, "%s: ", progname); 1688 (void)vfprintf(err_file, fmt, ap); 1689 va_end(ap); 1690 (void)fprintf(err_file, "\n"); 1691 (void)fflush(err_file); 1692 if (err_file == stderr) 1693 break; 1694 err_file = stderr; 1695 } 1696 } 1697 1698 /*- 1699 * Fatal -- 1700 * Produce a Fatal error message. If jobs are running, waits for them 1701 * to finish. 1702 * 1703 * Results: 1704 * None 1705 * 1706 * Side Effects: 1707 * The program exits 1708 */ 1709 /* VARARGS */ 1710 void 1711 Fatal(const char *fmt, ...) 1712 { 1713 va_list ap; 1714 1715 va_start(ap, fmt); 1716 if (jobsRunning) 1717 Job_Wait(); 1718 1719 (void)vfprintf(stderr, fmt, ap); 1720 va_end(ap); 1721 (void)fprintf(stderr, "\n"); 1722 (void)fflush(stderr); 1723 1724 PrintOnError(NULL, NULL); 1725 1726 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1727 Targ_PrintGraph(2); 1728 Trace_Log(MAKEERROR, 0); 1729 exit(2); /* Not 1 so -q can distinguish error */ 1730 } 1731 1732 /* 1733 * Punt -- 1734 * Major exception once jobs are being created. Kills all jobs, prints 1735 * a message and exits. 1736 * 1737 * Results: 1738 * None 1739 * 1740 * Side Effects: 1741 * All children are killed indiscriminately and the program Lib_Exits 1742 */ 1743 /* VARARGS */ 1744 void 1745 Punt(const char *fmt, ...) 1746 { 1747 va_list ap; 1748 1749 va_start(ap, fmt); 1750 (void)fprintf(stderr, "%s: ", progname); 1751 (void)vfprintf(stderr, fmt, ap); 1752 va_end(ap); 1753 (void)fprintf(stderr, "\n"); 1754 (void)fflush(stderr); 1755 1756 PrintOnError(NULL, NULL); 1757 1758 DieHorribly(); 1759 } 1760 1761 /*- 1762 * DieHorribly -- 1763 * Exit without giving a message. 1764 * 1765 * Results: 1766 * None 1767 * 1768 * Side Effects: 1769 * A big one... 1770 */ 1771 void 1772 DieHorribly(void) 1773 { 1774 if (jobsRunning) 1775 Job_AbortAll(); 1776 if (DEBUG(GRAPH2)) 1777 Targ_PrintGraph(2); 1778 Trace_Log(MAKEERROR, 0); 1779 exit(2); /* Not 1, so -q can distinguish error */ 1780 } 1781 1782 /* 1783 * Finish -- 1784 * Called when aborting due to errors in child shell to signal 1785 * abnormal exit. 1786 * 1787 * Results: 1788 * None 1789 * 1790 * Side Effects: 1791 * The program exits 1792 */ 1793 void 1794 Finish(int errors) 1795 /* number of errors encountered in Make_Make */ 1796 { 1797 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1798 } 1799 1800 /* 1801 * enunlink -- 1802 * Remove a file carefully, avoiding directories. 1803 */ 1804 int 1805 eunlink(const char *file) 1806 { 1807 struct stat st; 1808 1809 if (lstat(file, &st) == -1) 1810 return -1; 1811 1812 if (S_ISDIR(st.st_mode)) { 1813 errno = EISDIR; 1814 return -1; 1815 } 1816 return unlink(file); 1817 } 1818 1819 /* 1820 * execError -- 1821 * Print why exec failed, avoiding stdio. 1822 */ 1823 void 1824 execError(const char *af, const char *av) 1825 { 1826 #ifdef USE_IOVEC 1827 int i = 0; 1828 struct iovec iov[8]; 1829 #define IOADD(s) \ 1830 (void)(iov[i].iov_base = UNCONST(s), \ 1831 iov[i].iov_len = strlen(iov[i].iov_base), \ 1832 i++) 1833 #else 1834 #define IOADD(void)write(2, s, strlen(s)) 1835 #endif 1836 1837 IOADD(progname); 1838 IOADD(": "); 1839 IOADD(af); 1840 IOADD("("); 1841 IOADD(av); 1842 IOADD(") failed ("); 1843 IOADD(strerror(errno)); 1844 IOADD(")\n"); 1845 1846 #ifdef USE_IOVEC 1847 (void)writev(2, iov, 8); 1848 #endif 1849 } 1850 1851 /* 1852 * usage -- 1853 * exit with usage message 1854 */ 1855 static void 1856 usage(void) 1857 { 1858 (void)fprintf(stderr, 1859 "usage: %s [-BeikNnqrstWX] \n\ 1860 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1861 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1862 [-V variable] [variable=value] [target ...]\n", progname); 1863 exit(2); 1864 } 1865 1866 1867 int 1868 PrintAddr(void *a, void *b) 1869 { 1870 printf("%lx ", (unsigned long) a); 1871 return b ? 0 : 0; 1872 } 1873 1874 1875 1876 void 1877 PrintOnError(GNode *gn, const char *s) 1878 { 1879 static GNode *en = NULL; 1880 char tmp[64]; 1881 char *cp; 1882 1883 if (s) 1884 printf("%s", s); 1885 1886 printf("\n%s: stopped in %s\n", progname, curdir); 1887 1888 if (en) 1889 return; /* we've been here! */ 1890 if (gn) { 1891 /* 1892 * We can print this even if there is no .ERROR target. 1893 */ 1894 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1895 } 1896 /* 1897 * See if there is a .ERROR target, and run it if so. 1898 */ 1899 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1900 if (en) { 1901 en->type |= OP_SPECIAL; 1902 Compat_Make(en, en); 1903 } 1904 1905 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1906 sizeof(tmp) - 1); 1907 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1908 if (cp) { 1909 if (*cp) 1910 printf("%s", cp); 1911 free(cp); 1912 } 1913 } 1914 1915 void 1916 Main_ExportMAKEFLAGS(Boolean first) 1917 { 1918 static int once = 1; 1919 char tmp[64]; 1920 char *s; 1921 1922 if (once != first) 1923 return; 1924 once = 0; 1925 1926 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1927 sizeof(tmp)); 1928 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1929 if (s && *s) { 1930 #ifdef POSIX 1931 setenv("MAKEFLAGS", s, 1); 1932 #else 1933 setenv("MAKE", s, 1); 1934 #endif 1935 } 1936 } 1937
Indexes created Mon Sep 22 13:09:51 GMT 2025