main.c revision 1.167
1 /* $NetBSD: main.c,v 1.167 2009/03/01 01:49:17 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.167 2009/03/01 01:49:17 christos Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.167 2009/03/01 01:49:17 christos Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and 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 char curdir[MAXPATHLEN + 1]; /* startup directory */ 184 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 185 char *progname; /* the program name */ 186 187 Boolean forceJobs = FALSE; 188 189 extern Lst parseIncPath; 190 191 static void 192 parse_debug_options(const char *argvalue) 193 { 194 const char *modules; 195 const char *mode; 196 char *fname; 197 int len; 198 199 for (modules = argvalue; *modules; ++modules) { 200 switch (*modules) { 201 case 'A': 202 debug = ~0; 203 break; 204 case 'a': 205 debug |= DEBUG_ARCH; 206 break; 207 case 'C': 208 debug |= DEBUG_CWD; 209 break; 210 case 'c': 211 debug |= DEBUG_COND; 212 break; 213 case 'd': 214 debug |= DEBUG_DIR; 215 break; 216 case 'e': 217 debug |= DEBUG_ERROR; 218 break; 219 case 'f': 220 debug |= DEBUG_FOR; 221 break; 222 case 'g': 223 if (modules[1] == '1') { 224 debug |= DEBUG_GRAPH1; 225 ++modules; 226 } 227 else if (modules[1] == '2') { 228 debug |= DEBUG_GRAPH2; 229 ++modules; 230 } 231 else if (modules[1] == '3') { 232 debug |= DEBUG_GRAPH3; 233 ++modules; 234 } 235 break; 236 case 'j': 237 debug |= DEBUG_JOB; 238 break; 239 case 'l': 240 debug |= DEBUG_LOUD; 241 break; 242 case 'm': 243 debug |= DEBUG_MAKE; 244 break; 245 case 'n': 246 debug |= DEBUG_SCRIPT; 247 break; 248 case 'p': 249 debug |= DEBUG_PARSE; 250 break; 251 case 's': 252 debug |= DEBUG_SUFF; 253 break; 254 case 't': 255 debug |= DEBUG_TARG; 256 break; 257 case 'v': 258 debug |= DEBUG_VAR; 259 break; 260 case 'x': 261 debug |= DEBUG_SHELL; 262 break; 263 case 'F': 264 if (debug_file != stdout && debug_file != stderr) 265 fclose(debug_file); 266 if (*++modules == '+') 267 mode = "a"; 268 else 269 mode = "w"; 270 if (strcmp(modules, "stdout") == 0) { 271 debug_file = stdout; 272 goto debug_setbuf; 273 } 274 if (strcmp(modules, "stderr") == 0) { 275 debug_file = stderr; 276 goto debug_setbuf; 277 } 278 len = strlen(modules); 279 fname = malloc(len + 20); 280 memcpy(fname, modules, len + 1); 281 /* Let the filename be modified by the pid */ 282 if (strcmp(fname + len - 3, ".%d") == 0) 283 snprintf(fname + len - 2, 20, "%d", getpid()); 284 debug_file = fopen(fname, mode); 285 if (!debug_file) { 286 fprintf(stderr, "Cannot open debug file %s\n", 287 fname); 288 usage(); 289 } 290 free(fname); 291 goto debug_setbuf; 292 default: 293 (void)fprintf(stderr, 294 "%s: illegal argument to d option -- %c\n", 295 progname, *modules); 296 usage(); 297 } 298 } 299 debug_setbuf: 300 /* 301 * Make the debug_file unbuffered, and make 302 * stdout line buffered (unless debugfile == stdout). 303 */ 304 setvbuf(debug_file, NULL, _IONBF, 0); 305 if (debug_file != stdout) { 306 setvbuf(stdout, NULL, _IOLBF, 0); 307 } 308 } 309 310 /*- 311 * MainParseArgs -- 312 * Parse a given argument vector. Called from main() and from 313 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 314 * 315 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 316 * 317 * Results: 318 * None 319 * 320 * Side Effects: 321 * Various global and local flags will be set depending on the flags 322 * given 323 */ 324 static void 325 MainParseArgs(int argc, char **argv) 326 { 327 char *p; 328 int c = '?'; 329 int arginc; 330 char *argvalue; 331 const char *getopt_def; 332 char *optscan; 333 Boolean inOption, dashDash = FALSE; 334 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 335 336 #define OPTFLAGS "BD:I:J:NST:V:WXd:ef:ij:km:nqrst" 337 /* Can't actually use getopt(3) because rescanning is not portable */ 338 339 getopt_def = OPTFLAGS; 340 rearg: 341 inOption = FALSE; 342 optscan = NULL; 343 while(argc > 1) { 344 char *getopt_spec; 345 if(!inOption) 346 optscan = argv[1]; 347 c = *optscan++; 348 arginc = 0; 349 if(inOption) { 350 if(c == '\0') { 351 ++argv; 352 --argc; 353 inOption = FALSE; 354 continue; 355 } 356 } else { 357 if (c != '-' || dashDash) 358 break; 359 inOption = TRUE; 360 c = *optscan++; 361 } 362 /* '-' found at some earlier point */ 363 getopt_spec = strchr(getopt_def, c); 364 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 365 /* -<something> found, and <something> should have an arg */ 366 inOption = FALSE; 367 arginc = 1; 368 argvalue = optscan; 369 if(*argvalue == '\0') { 370 if (argc < 3) 371 goto noarg; 372 argvalue = argv[2]; 373 arginc = 2; 374 } 375 } else { 376 argvalue = NULL; 377 } 378 switch(c) { 379 case '\0': 380 arginc = 1; 381 inOption = FALSE; 382 break; 383 case 'B': 384 compatMake = TRUE; 385 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 386 break; 387 case 'D': 388 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 389 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 390 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 391 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 392 break; 393 case 'I': 394 if (argvalue == NULL) goto noarg; 395 Parse_AddIncludeDir(argvalue); 396 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 397 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 398 break; 399 case 'J': 400 if (argvalue == NULL) goto noarg; 401 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 402 (void)fprintf(stderr, 403 "%s: internal error -- J option malformed (%s)\n", 404 progname, argvalue); 405 usage(); 406 } 407 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 408 (fcntl(jp_1, F_GETFD, 0) < 0)) { 409 #if 0 410 (void)fprintf(stderr, 411 "%s: ###### warning -- J descriptors were closed!\n", 412 progname); 413 exit(2); 414 #endif 415 jp_0 = -1; 416 jp_1 = -1; 417 compatMake = TRUE; 418 } else { 419 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 420 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 421 jobServer = TRUE; 422 } 423 break; 424 case 'N': 425 noExecute = TRUE; 426 noRecursiveExecute = TRUE; 427 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 428 break; 429 case 'S': 430 keepgoing = FALSE; 431 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 432 break; 433 case 'T': 434 if (argvalue == NULL) goto noarg; 435 tracefile = bmake_strdup(argvalue); 436 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 437 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 438 break; 439 case 'V': 440 if (argvalue == NULL) goto noarg; 441 printVars = TRUE; 442 (void)Lst_AtEnd(variables, argvalue); 443 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 444 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 445 break; 446 case 'W': 447 parseWarnFatal = TRUE; 448 break; 449 case 'X': 450 varNoExportEnv = TRUE; 451 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 452 break; 453 case 'd': 454 if (argvalue == NULL) goto noarg; 455 /* If '-d-opts' don't pass to children */ 456 if (argvalue[0] == '-') 457 argvalue++; 458 else { 459 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 460 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 461 } 462 parse_debug_options(argvalue); 463 break; 464 case 'e': 465 checkEnvFirst = TRUE; 466 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 467 break; 468 case 'f': 469 if (argvalue == NULL) goto noarg; 470 (void)Lst_AtEnd(makefiles, argvalue); 471 break; 472 case 'i': 473 ignoreErrors = TRUE; 474 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 475 break; 476 case 'j': 477 if (argvalue == NULL) goto noarg; 478 forceJobs = TRUE; 479 maxJobs = strtol(argvalue, &p, 0); 480 if (*p != '\0' || maxJobs < 1) { 481 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 482 progname); 483 exit(1); 484 } 485 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 486 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 487 maxJobTokens = maxJobs; 488 break; 489 case 'k': 490 keepgoing = TRUE; 491 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 492 break; 493 case 'm': 494 if (argvalue == NULL) goto noarg; 495 /* look for magic parent directory search string */ 496 if (strncmp(".../", argvalue, 4) == 0) { 497 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 498 found_path, sizeof(found_path))) 499 break; /* nothing doing */ 500 (void)Dir_AddDir(sysIncPath, found_path); 501 502 } else { 503 (void)Dir_AddDir(sysIncPath, argvalue); 504 } 505 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 506 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 507 break; 508 case 'n': 509 noExecute = TRUE; 510 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 511 break; 512 case 'q': 513 queryFlag = TRUE; 514 /* Kind of nonsensical, wot? */ 515 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 516 break; 517 case 'r': 518 noBuiltins = TRUE; 519 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 520 break; 521 case 's': 522 beSilent = TRUE; 523 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 524 break; 525 case 't': 526 touchFlag = TRUE; 527 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 528 break; 529 case '-': 530 dashDash = TRUE; 531 break; 532 default: 533 case '?': 534 usage(); 535 } 536 argv += arginc; 537 argc -= arginc; 538 } 539 540 oldVars = TRUE; 541 542 /* 543 * See if the rest of the arguments are variable assignments and 544 * perform them if so. Else take them to be targets and stuff them 545 * on the end of the "create" list. 546 */ 547 for (; argc > 1; ++argv, --argc) 548 if (Parse_IsVar(argv[1])) { 549 Parse_DoVar(argv[1], VAR_CMD); 550 } else { 551 if (!*argv[1]) 552 Punt("illegal (null) argument."); 553 if (*argv[1] == '-' && !dashDash) 554 goto rearg; 555 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 556 } 557 558 return; 559 noarg: 560 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 561 progname, c); 562 usage(); 563 } 564 565 /*- 566 * Main_ParseArgLine -- 567 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 568 * is encountered and by main() when reading the .MAKEFLAGS envariable. 569 * Takes a line of arguments and breaks it into its 570 * component words and passes those words and the number of them to the 571 * MainParseArgs function. 572 * The line should have all its leading whitespace removed. 573 * 574 * Input: 575 * line Line to fracture 576 * 577 * Results: 578 * None 579 * 580 * Side Effects: 581 * Only those that come from the various arguments. 582 */ 583 void 584 Main_ParseArgLine(const char *line) 585 { 586 char **argv; /* Manufactured argument vector */ 587 int argc; /* Number of arguments in argv */ 588 char *args; /* Space used by the args */ 589 char *buf, *p1; 590 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 591 size_t len; 592 593 if (line == NULL) 594 return; 595 for (; *line == ' '; ++line) 596 continue; 597 if (!*line) 598 return; 599 600 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 601 (void)snprintf(buf, len, "%s %s", argv0, line); 602 if (p1) 603 free(p1); 604 605 argv = brk_string(buf, &argc, TRUE, &args); 606 if (argv == NULL) { 607 Error("Unterminated quoted string [%s]", buf); 608 free(buf); 609 return; 610 } 611 free(buf); 612 MainParseArgs(argc, argv); 613 614 free(args); 615 free(argv); 616 } 617 618 Boolean 619 Main_SetObjdir(const char *path) 620 { 621 struct stat sb; 622 char *p = NULL; 623 char buf[MAXPATHLEN + 1]; 624 Boolean rc = FALSE; 625 626 /* expand variable substitutions */ 627 if (strchr(path, '$') != 0) { 628 snprintf(buf, MAXPATHLEN, "%s", path); 629 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 630 } 631 632 if (path[0] != '/') { 633 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 634 path = buf; 635 } 636 637 /* look for the directory and try to chdir there */ 638 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 639 if (chdir(path)) { 640 (void)fprintf(stderr, "make warning: %s: %s.\n", 641 path, strerror(errno)); 642 } else { 643 strncpy(objdir, path, MAXPATHLEN); 644 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 645 setenv("PWD", objdir, 1); 646 Dir_InitDot(); 647 rc = TRUE; 648 } 649 } 650 651 if (p) 652 free(p); 653 return rc; 654 } 655 656 /*- 657 * ReadAllMakefiles -- 658 * wrapper around ReadMakefile() to read all. 659 * 660 * Results: 661 * TRUE if ok, FALSE on error 662 */ 663 static int 664 ReadAllMakefiles(const void *p, const void *q) 665 { 666 return (ReadMakefile(p, q) == 0); 667 } 668 669 #ifdef SIGINFO 670 /*ARGSUSED*/ 671 static void 672 siginfo(int signo) 673 { 674 char dir[MAXPATHLEN]; 675 char str[2 * MAXPATHLEN]; 676 int len; 677 if (getcwd(dir, sizeof(dir)) == NULL) 678 return; 679 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", getprogname(), 680 dir); 681 if (len > 0) 682 (void)write(STDERR_FILENO, str, (size_t)len); 683 } 684 #endif 685 686 /*- 687 * main -- 688 * The main function, for obvious reasons. Initializes variables 689 * and a few modules, then parses the arguments give it in the 690 * environment and on the command line. Reads the system makefile 691 * followed by either Makefile, makefile or the file given by the 692 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 693 * flags it has received by then uses either the Make or the Compat 694 * module to create the initial list of targets. 695 * 696 * Results: 697 * If -q was given, exits -1 if anything was out-of-date. Else it exits 698 * 0. 699 * 700 * Side Effects: 701 * The program exits when done. Targets are created. etc. etc. etc. 702 */ 703 int 704 main(int argc, char **argv) 705 { 706 Lst targs; /* target nodes to create -- passed to Make_Init */ 707 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 708 struct stat sb, sa; 709 char *p1, *path, *pwd; 710 char mdpath[MAXPATHLEN]; 711 char *machine = getenv("MACHINE"); 712 const char *machine_arch = getenv("MACHINE_ARCH"); 713 char *syspath = getenv("MAKESYSPATH"); 714 Lst sysMkPath; /* Path of sys.mk */ 715 char *cp = NULL, *start; 716 /* avoid faults on read-only strings */ 717 static char defsyspath[] = _PATH_DEFSYSPATH; 718 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 719 struct timeval rightnow; /* to initialize random seed */ 720 #ifdef MAKE_NATIVE 721 struct utsname utsname; 722 #endif 723 724 /* default to writing debug to stderr */ 725 debug_file = stderr; 726 727 #ifdef SIGINFO 728 (void)signal(SIGINFO, siginfo); 729 #endif 730 /* 731 * Set the seed to produce a different random sequence 732 * on each program execution. 733 */ 734 gettimeofday(&rightnow, NULL); 735 srandom(rightnow.tv_sec + rightnow.tv_usec); 736 737 if ((progname = strrchr(argv[0], '/')) != NULL) 738 progname++; 739 else 740 progname = argv[0]; 741 #ifdef RLIMIT_NOFILE 742 /* 743 * get rid of resource limit on file descriptors 744 */ 745 { 746 struct rlimit rl; 747 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 748 rl.rlim_cur != rl.rlim_max) { 749 rl.rlim_cur = rl.rlim_max; 750 (void)setrlimit(RLIMIT_NOFILE, &rl); 751 } 752 } 753 #endif 754 /* 755 * Find where we are and take care of PWD for the automounter... 756 * All this code is so that we know where we are when we start up 757 * on a different machine with pmake. 758 */ 759 if (getcwd(curdir, MAXPATHLEN) == NULL) { 760 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 761 exit(2); 762 } 763 764 if (stat(curdir, &sa) == -1) { 765 (void)fprintf(stderr, "%s: %s: %s.\n", 766 progname, curdir, strerror(errno)); 767 exit(2); 768 } 769 770 /* 771 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 772 * since the value of curdir can very depending on how we got 773 * here. Ie sitting at a shell prompt (shell that provides $PWD) 774 * or via subdir.mk in which case its likely a shell which does 775 * not provide it. 776 * So, to stop it breaking this case only, we ignore PWD if 777 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 778 */ 779 if ((pwd = getenv("PWD")) != NULL && getenv("MAKEOBJDIRPREFIX") == NULL) { 780 const char *makeobjdir = getenv("MAKEOBJDIR"); 781 782 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 783 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 784 sa.st_dev == sb.st_dev) 785 (void)strncpy(curdir, pwd, MAXPATHLEN); 786 } 787 } 788 789 /* 790 * Get the name of this type of MACHINE from utsname 791 * so we can share an executable for similar machines. 792 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 793 * 794 * Note that both MACHINE and MACHINE_ARCH are decided at 795 * run-time. 796 */ 797 if (!machine) { 798 #ifdef MAKE_NATIVE 799 if (uname(&utsname) == -1) { 800 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 801 strerror(errno)); 802 exit(2); 803 } 804 machine = utsname.machine; 805 #else 806 #ifdef MAKE_MACHINE 807 machine = MAKE_MACHINE; 808 #else 809 machine = "unknown"; 810 #endif 811 #endif 812 } 813 814 if (!machine_arch) { 815 #ifndef MACHINE_ARCH 816 #ifdef MAKE_MACHINE_ARCH 817 machine_arch = MAKE_MACHINE_ARCH; 818 #else 819 machine_arch = "unknown"; 820 #endif 821 #else 822 machine_arch = MACHINE_ARCH; 823 #endif 824 } 825 826 /* 827 * Just in case MAKEOBJDIR wants us to do something tricky. 828 */ 829 Var_Init(); /* Initialize the lists of variables for 830 * parsing arguments */ 831 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 832 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 833 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 834 #ifdef MAKE_VERSION 835 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 836 #endif 837 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 838 839 /* 840 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 841 * MAKEOBJDIR is set in the environment, try only that value 842 * and fall back to .CURDIR if it does not exist. 843 * 844 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 845 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 846 * of these paths exist, just use .CURDIR. 847 */ 848 Dir_Init(curdir); 849 (void)Main_SetObjdir(curdir); 850 851 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 852 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 853 (void)Main_SetObjdir(mdpath); 854 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 855 (void)Main_SetObjdir(path); 856 } else { 857 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 858 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 859 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 860 _PATH_OBJDIRPREFIX, curdir); 861 (void)Main_SetObjdir(mdpath); 862 } 863 } 864 865 create = Lst_Init(FALSE); 866 makefiles = Lst_Init(FALSE); 867 printVars = FALSE; 868 variables = Lst_Init(FALSE); 869 beSilent = FALSE; /* Print commands as executed */ 870 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 871 noExecute = FALSE; /* Execute all commands */ 872 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 873 keepgoing = FALSE; /* Stop on error */ 874 allPrecious = FALSE; /* Remove targets when interrupted */ 875 queryFlag = FALSE; /* This is not just a check-run */ 876 noBuiltins = FALSE; /* Read the built-in rules */ 877 touchFlag = FALSE; /* Actually update targets */ 878 debug = 0; /* No debug verbosity, please. */ 879 jobsRunning = FALSE; 880 881 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 882 maxJobTokens = maxJobs; 883 compatMake = FALSE; /* No compat mode */ 884 885 886 /* 887 * Initialize the parsing, directory and variable modules to prepare 888 * for the reading of inclusion paths and variable settings on the 889 * command line 890 */ 891 892 /* 893 * Initialize various variables. 894 * MAKE also gets this name, for compatibility 895 * .MAKEFLAGS gets set to the empty string just in case. 896 * MFLAGS also gets initialized empty, for compatibility. 897 */ 898 Parse_Init(); 899 Var_Set("MAKE", argv[0], VAR_GLOBAL, 0); 900 Var_Set(".MAKE", argv[0], VAR_GLOBAL, 0); 901 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 902 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 903 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 904 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 905 906 /* 907 * Set some other useful macros 908 */ 909 { 910 char tmp[64]; 911 912 snprintf(tmp, sizeof(tmp), "%u", getpid()); 913 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 914 snprintf(tmp, sizeof(tmp), "%u", getppid()); 915 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 916 } 917 Job_SetPrefix(); 918 919 /* 920 * First snag any flags out of the MAKE environment variable. 921 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 922 * in a different format). 923 */ 924 #ifdef POSIX 925 Main_ParseArgLine(getenv("MAKEFLAGS")); 926 #else 927 Main_ParseArgLine(getenv("MAKE")); 928 #endif 929 930 MainParseArgs(argc, argv); 931 932 /* 933 * Be compatible if user did not specify -j and did not explicitly 934 * turned compatibility on 935 */ 936 if (!compatMake && !forceJobs) { 937 compatMake = TRUE; 938 } 939 940 /* 941 * Initialize archive, target and suffix modules in preparation for 942 * parsing the makefile(s) 943 */ 944 Arch_Init(); 945 Targ_Init(); 946 Suff_Init(); 947 Trace_Init(tracefile); 948 949 DEFAULT = NULL; 950 (void)time(&now); 951 952 Trace_Log(MAKESTART, NULL); 953 954 /* 955 * Set up the .TARGETS variable to contain the list of targets to be 956 * created. If none specified, make the variable empty -- the parser 957 * will fill the thing in with the default or .MAIN target. 958 */ 959 if (!Lst_IsEmpty(create)) { 960 LstNode ln; 961 962 for (ln = Lst_First(create); ln != NULL; 963 ln = Lst_Succ(ln)) { 964 char *name = (char *)Lst_Datum(ln); 965 966 Var_Append(".TARGETS", name, VAR_GLOBAL); 967 } 968 } else 969 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 970 971 972 /* 973 * If no user-supplied system path was given (through the -m option) 974 * add the directories from the DEFSYSPATH (more than one may be given 975 * as dir1:...:dirn) to the system include path. 976 */ 977 if (syspath == NULL || *syspath == '\0') 978 syspath = defsyspath; 979 else 980 syspath = bmake_strdup(syspath); 981 982 for (start = syspath; *start != '\0'; start = cp) { 983 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 984 continue; 985 if (*cp == ':') { 986 *cp++ = '\0'; 987 } 988 /* look for magic parent directory search string */ 989 if (strncmp(".../", start, 4) != 0) { 990 (void)Dir_AddDir(defIncPath, start); 991 } else { 992 if (Dir_FindHereOrAbove(curdir, start+4, 993 found_path, sizeof(found_path))) { 994 (void)Dir_AddDir(defIncPath, found_path); 995 } 996 } 997 } 998 if (syspath != defsyspath) 999 free(syspath); 1000 1001 /* 1002 * Read in the built-in rules first, followed by the specified 1003 * makefile, if it was (makefile != NULL), or the default 1004 * makefile and Makefile, in that order, if it wasn't. 1005 */ 1006 if (!noBuiltins) { 1007 LstNode ln; 1008 1009 sysMkPath = Lst_Init(FALSE); 1010 Dir_Expand(_PATH_DEFSYSMK, 1011 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1012 sysMkPath); 1013 if (Lst_IsEmpty(sysMkPath)) 1014 Fatal("%s: no system rules (%s).", progname, 1015 _PATH_DEFSYSMK); 1016 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1017 if (ln == NULL) 1018 Fatal("%s: cannot open %s.", progname, 1019 (char *)Lst_Datum(ln)); 1020 } 1021 1022 if (!Lst_IsEmpty(makefiles)) { 1023 LstNode ln; 1024 1025 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1026 if (ln != NULL) 1027 Fatal("%s: cannot open %s.", progname, 1028 (char *)Lst_Datum(ln)); 1029 } else if (ReadMakefile("makefile", NULL) != 0) 1030 (void)ReadMakefile("Makefile", NULL); 1031 1032 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1033 if (!noBuiltins || !printVars) { 1034 doing_depend = TRUE; 1035 (void)ReadMakefile(".depend", NULL); 1036 doing_depend = FALSE; 1037 } 1038 1039 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1040 if (p1) 1041 free(p1); 1042 1043 if (!compatMake) 1044 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1045 if (DEBUG(JOB)) 1046 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1047 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1048 1049 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1050 1051 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1052 1053 1054 /* 1055 * For compatibility, look at the directories in the VPATH variable 1056 * and add them to the search path, if the variable is defined. The 1057 * variable's value is in the same format as the PATH envariable, i.e. 1058 * <directory>:<directory>:<directory>... 1059 */ 1060 if (Var_Exists("VPATH", VAR_CMD)) { 1061 char *vpath, savec; 1062 /* 1063 * GCC stores string constants in read-only memory, but 1064 * Var_Subst will want to write this thing, so store it 1065 * in an array 1066 */ 1067 static char VPATH[] = "${VPATH}"; 1068 1069 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1070 path = vpath; 1071 do { 1072 /* skip to end of directory */ 1073 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1074 continue; 1075 /* Save terminator character so know when to stop */ 1076 savec = *cp; 1077 *cp = '\0'; 1078 /* Add directory to search path */ 1079 (void)Dir_AddDir(dirSearchPath, path); 1080 *cp = savec; 1081 path = cp + 1; 1082 } while (savec == ':'); 1083 free(vpath); 1084 } 1085 1086 /* 1087 * Now that all search paths have been read for suffixes et al, it's 1088 * time to add the default search path to their lists... 1089 */ 1090 Suff_DoPaths(); 1091 1092 /* 1093 * Propagate attributes through :: dependency lists. 1094 */ 1095 Targ_Propagate(); 1096 1097 /* print the initial graph, if the user requested it */ 1098 if (DEBUG(GRAPH1)) 1099 Targ_PrintGraph(1); 1100 1101 /* print the values of any variables requested by the user */ 1102 if (printVars) { 1103 LstNode ln; 1104 1105 for (ln = Lst_First(variables); ln != NULL; 1106 ln = Lst_Succ(ln)) { 1107 char *var = (char *)Lst_Datum(ln); 1108 char *value; 1109 1110 if (strchr(var, '$')) { 1111 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1112 } else { 1113 value = Var_Value(var, VAR_GLOBAL, &p1); 1114 } 1115 printf("%s\n", value ? value : ""); 1116 if (p1) 1117 free(p1); 1118 } 1119 } else { 1120 /* 1121 * Have now read the entire graph and need to make a list of 1122 * targets to create. If none was given on the command line, 1123 * we consult the parsing module to find the main target(s) 1124 * to create. 1125 */ 1126 if (Lst_IsEmpty(create)) 1127 targs = Parse_MainName(); 1128 else 1129 targs = Targ_FindList(create, TARG_CREATE); 1130 1131 if (!compatMake) { 1132 /* 1133 * Initialize job module before traversing the graph 1134 * now that any .BEGIN and .END targets have been read. 1135 * This is done only if the -q flag wasn't given 1136 * (to prevent the .BEGIN from being executed should 1137 * it exist). 1138 */ 1139 if (!queryFlag) { 1140 Job_Init(); 1141 jobsRunning = TRUE; 1142 } 1143 1144 /* Traverse the graph, checking on all the targets */ 1145 outOfDate = Make_Run(targs); 1146 } else { 1147 /* 1148 * Compat_Init will take care of creating all the 1149 * targets as well as initializing the module. 1150 */ 1151 Compat_Run(targs); 1152 } 1153 } 1154 1155 #ifdef CLEANUP 1156 Lst_Destroy(targs, NULL); 1157 Lst_Destroy(variables, NULL); 1158 Lst_Destroy(makefiles, NULL); 1159 Lst_Destroy(create, (FreeProc *)free); 1160 #endif 1161 1162 /* print the graph now it's been processed if the user requested it */ 1163 if (DEBUG(GRAPH2)) 1164 Targ_PrintGraph(2); 1165 1166 Trace_Log(MAKEEND, 0); 1167 1168 Suff_End(); 1169 Targ_End(); 1170 Arch_End(); 1171 Var_End(); 1172 Parse_End(); 1173 Dir_End(); 1174 Job_End(); 1175 Trace_End(); 1176 1177 return outOfDate ? 1 : 0; 1178 } 1179 1180 /*- 1181 * ReadMakefile -- 1182 * Open and parse the given makefile. 1183 * 1184 * Results: 1185 * 0 if ok. -1 if couldn't open file. 1186 * 1187 * Side Effects: 1188 * lots 1189 */ 1190 static int 1191 ReadMakefile(const void *p, const void *q __unused) 1192 { 1193 const char *fname = p; /* makefile to read */ 1194 int fd; 1195 size_t len = MAXPATHLEN; 1196 char *name, *path = bmake_malloc(len); 1197 int setMAKEFILE; 1198 1199 if (!strcmp(fname, "-")) { 1200 Parse_File("(stdin)", dup(fileno(stdin))); 1201 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1202 } else { 1203 setMAKEFILE = strcmp(fname, ".depend"); 1204 1205 /* if we've chdir'd, rebuild the path name */ 1206 if (strcmp(curdir, objdir) && *fname != '/') { 1207 size_t plen = strlen(curdir) + strlen(fname) + 2; 1208 if (len < plen) 1209 path = bmake_realloc(path, len = 2 * plen); 1210 1211 (void)snprintf(path, len, "%s/%s", curdir, fname); 1212 fd = open(path, O_RDONLY); 1213 if (fd != -1) { 1214 fname = path; 1215 goto found; 1216 } 1217 1218 /* If curdir failed, try objdir (ala .depend) */ 1219 plen = strlen(objdir) + strlen(fname) + 2; 1220 if (len < plen) 1221 path = bmake_realloc(path, len = 2 * plen); 1222 (void)snprintf(path, len, "%s/%s", objdir, fname); 1223 fd = open(path, O_RDONLY); 1224 if (fd != -1) { 1225 fname = path; 1226 goto found; 1227 } 1228 } else { 1229 fd = open(fname, O_RDONLY); 1230 if (fd != -1) 1231 goto found; 1232 } 1233 /* look in -I and system include directories. */ 1234 name = Dir_FindFile(fname, parseIncPath); 1235 if (!name) 1236 name = Dir_FindFile(fname, 1237 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1238 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1239 if (name) 1240 free(name); 1241 free(path); 1242 return(-1); 1243 } 1244 fname = name; 1245 /* 1246 * set the MAKEFILE variable desired by System V fans -- the 1247 * placement of the setting here means it gets set to the last 1248 * makefile specified, as it is set by SysV make. 1249 */ 1250 found: 1251 if (setMAKEFILE) 1252 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1253 Parse_File(fname, fd); 1254 } 1255 free(path); 1256 return(0); 1257 } 1258 1259 1260 /* 1261 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1262 * in situations that would not arrise with ./obj (links or not). 1263 * This tends to break things like: 1264 * 1265 * build: 1266 * ${MAKE} includes 1267 * 1268 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1269 * opposed to an argument) in a command line and if so returns 1270 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1271 * the Makefile hold true. 1272 * 1273 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1274 * 1275 * The chdir() only happens in the child process, and does nothing if 1276 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1277 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1278 * do nothing - to ensure historic semantics can be retained. 1279 */ 1280 static int Check_Cwd_Off = 0; 1281 1282 static char * 1283 Check_Cwd_av(int ac, char **av, int copy) 1284 { 1285 static char *make[4]; 1286 static char *cur_dir = NULL; 1287 char **mp; 1288 char *cp; 1289 int is_cmd, next_cmd; 1290 int i; 1291 int n; 1292 1293 if (Check_Cwd_Off) { 1294 if (DEBUG(CWD)) 1295 fprintf(debug_file, "check_cwd: check is off.\n"); 1296 return NULL; 1297 } 1298 1299 if (make[0] == NULL) { 1300 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1301 Check_Cwd_Off = 1; 1302 if (DEBUG(CWD)) 1303 fprintf(debug_file, "check_cwd: turning check off.\n"); 1304 return NULL; 1305 } 1306 1307 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1308 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1309 make[0] = make[1]; 1310 make[1] = NULL; 1311 } else 1312 ++make[0]; 1313 make[2] = NULL; 1314 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1315 } 1316 if (ac == 0 || av == NULL) { 1317 if (DEBUG(CWD)) 1318 fprintf(debug_file, "check_cwd: empty command.\n"); 1319 return NULL; /* initialization only */ 1320 } 1321 1322 if (getenv("MAKEOBJDIR") == NULL && 1323 getenv("MAKEOBJDIRPREFIX") == NULL) { 1324 if (DEBUG(CWD)) 1325 fprintf(debug_file, "check_cwd: no obj dirs.\n"); 1326 return NULL; 1327 } 1328 1329 1330 next_cmd = 1; 1331 for (i = 0; i < ac; ++i) { 1332 is_cmd = next_cmd; 1333 1334 n = strlen(av[i]); 1335 cp = &(av[i])[n - 1]; 1336 if (strspn(av[i], "|&;") == (size_t)n) { 1337 next_cmd = 1; 1338 continue; 1339 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1340 next_cmd = 1; 1341 if (copy) { 1342 do { 1343 *cp-- = '\0'; 1344 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1345 *cp == ')' || *cp == '}') ; 1346 } else { 1347 /* 1348 * XXX this should not happen. 1349 */ 1350 fprintf(stderr, "%s: WARNING: raw arg ends in shell meta '%s'\n", 1351 progname, av[i]); 1352 } 1353 } else 1354 next_cmd = 0; 1355 1356 cp = av[i]; 1357 if (*cp == ';' || *cp == '&' || *cp == '|') 1358 is_cmd = 1; 1359 1360 if (DEBUG(CWD)) 1361 fprintf(debug_file, "av[%d] == %s '%s'", 1362 i, (is_cmd) ? "cmd" : "arg", av[i]); 1363 if (is_cmd != 0) { 1364 if (*cp == '(' || *cp == '{' || 1365 *cp == ';' || *cp == '&' || *cp == '|') { 1366 do { 1367 ++cp; 1368 } while (*cp == '(' || *cp == '{' || 1369 *cp == ';' || *cp == '&' || *cp == '|'); 1370 if (*cp == '\0') { 1371 next_cmd = 1; 1372 continue; 1373 } 1374 } 1375 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1376 if (DEBUG(CWD)) 1377 fprintf(debug_file, " == cd, done.\n"); 1378 return NULL; 1379 } 1380 for (mp = make; *mp != NULL; ++mp) { 1381 n = strlen(*mp); 1382 if (strcmp(cp, *mp) == 0) { 1383 if (DEBUG(CWD)) 1384 fprintf(debug_file, " %s == '%s', chdir(%s)\n", 1385 cp, *mp, cur_dir); 1386 return cur_dir; 1387 } 1388 } 1389 } 1390 if (DEBUG(CWD)) 1391 fprintf(debug_file, "\n"); 1392 } 1393 return NULL; 1394 } 1395 1396 char * 1397 Check_Cwd_Cmd(const char *cmd) 1398 { 1399 char *cp, *bp; 1400 char **av; 1401 int ac; 1402 1403 if (Check_Cwd_Off) 1404 return NULL; 1405 1406 if (cmd) { 1407 av = brk_string(cmd, &ac, TRUE, &bp); 1408 if (DEBUG(CWD)) 1409 fprintf(debug_file, "splitting: '%s' -> %d words\n", 1410 cmd, ac); 1411 } else { 1412 ac = 0; 1413 av = NULL; 1414 bp = NULL; 1415 } 1416 cp = Check_Cwd_av(ac, av, 1); 1417 if (bp) 1418 free(bp); 1419 if (av) 1420 free(av); 1421 return cp; 1422 } 1423 1424 void 1425 Check_Cwd(const char **argv) 1426 { 1427 char *cp; 1428 int ac; 1429 1430 if (Check_Cwd_Off) 1431 return; 1432 1433 for (ac = 0; argv[ac] != NULL; ++ac) 1434 /* NOTHING */; 1435 if (ac == 3 && *argv[1] == '-') { 1436 cp = Check_Cwd_Cmd(argv[2]); 1437 } else { 1438 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1439 } 1440 if (cp) { 1441 chdir(cp); 1442 } 1443 } 1444 1445 /*- 1446 * Cmd_Exec -- 1447 * Execute the command in cmd, and return the output of that command 1448 * in a string. 1449 * 1450 * Results: 1451 * A string containing the output of the command, or the empty string 1452 * If errnum is not NULL, it contains the reason for the command failure 1453 * 1454 * Side Effects: 1455 * The string must be freed by the caller. 1456 */ 1457 char * 1458 Cmd_Exec(const char *cmd, const char **errnum) 1459 { 1460 const char *args[4]; /* Args for invoking the shell */ 1461 int fds[2]; /* Pipe streams */ 1462 int cpid; /* Child PID */ 1463 int pid; /* PID from wait() */ 1464 char *res; /* result */ 1465 int status; /* command exit status */ 1466 Buffer buf; /* buffer to store the result */ 1467 char *cp; 1468 int cc; 1469 1470 1471 *errnum = NULL; 1472 1473 if (!shellName) 1474 Shell_Init(); 1475 /* 1476 * Set up arguments for shell 1477 */ 1478 args[0] = shellName; 1479 args[1] = "-c"; 1480 args[2] = cmd; 1481 args[3] = NULL; 1482 1483 /* 1484 * Open a pipe for fetching its output 1485 */ 1486 if (pipe(fds) == -1) { 1487 *errnum = "Couldn't create pipe for \"%s\""; 1488 goto bad; 1489 } 1490 1491 /* 1492 * Fork 1493 */ 1494 switch (cpid = vfork()) { 1495 case 0: 1496 /* 1497 * Close input side of pipe 1498 */ 1499 (void)close(fds[0]); 1500 1501 /* 1502 * Duplicate the output stream to the shell's output, then 1503 * shut the extra thing down. Note we don't fetch the error 1504 * stream...why not? Why? 1505 */ 1506 (void)dup2(fds[1], 1); 1507 (void)close(fds[1]); 1508 1509 Var_ExportVars(); 1510 1511 (void)execv(shellPath, UNCONST(args)); 1512 _exit(1); 1513 /*NOTREACHED*/ 1514 1515 case -1: 1516 *errnum = "Couldn't exec \"%s\""; 1517 goto bad; 1518 1519 default: 1520 /* 1521 * No need for the writing half 1522 */ 1523 (void)close(fds[1]); 1524 1525 Buf_Init(&buf, 0); 1526 1527 do { 1528 char result[BUFSIZ]; 1529 cc = read(fds[0], result, sizeof(result)); 1530 if (cc > 0) 1531 Buf_AddBytes(&buf, cc, result); 1532 } 1533 while (cc > 0 || (cc == -1 && errno == EINTR)); 1534 1535 /* 1536 * Close the input side of the pipe. 1537 */ 1538 (void)close(fds[0]); 1539 1540 /* 1541 * Wait for the process to exit. 1542 */ 1543 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) 1544 continue; 1545 1546 cc = Buf_Size(&buf); 1547 res = Buf_Destroy(&buf, FALSE); 1548 1549 if (cc == 0) 1550 *errnum = "Couldn't read shell's output for \"%s\""; 1551 1552 if (status) 1553 *errnum = "\"%s\" returned non-zero status"; 1554 1555 /* 1556 * Null-terminate the result, convert newlines to spaces and 1557 * install it in the variable. 1558 */ 1559 res[cc] = '\0'; 1560 cp = &res[cc]; 1561 1562 if (cc > 0 && *--cp == '\n') { 1563 /* 1564 * A final newline is just stripped 1565 */ 1566 *cp-- = '\0'; 1567 } 1568 while (cp >= res) { 1569 if (*cp == '\n') { 1570 *cp = ' '; 1571 } 1572 cp--; 1573 } 1574 break; 1575 } 1576 return res; 1577 bad: 1578 res = bmake_malloc(1); 1579 *res = '\0'; 1580 return res; 1581 } 1582 1583 /*- 1584 * Error -- 1585 * Print an error message given its format. 1586 * 1587 * Results: 1588 * None. 1589 * 1590 * Side Effects: 1591 * The message is printed. 1592 */ 1593 /* VARARGS */ 1594 void 1595 Error(const char *fmt, ...) 1596 { 1597 va_list ap; 1598 FILE *err_file; 1599 1600 err_file = debug_file; 1601 if (err_file == stdout) 1602 err_file = stderr; 1603 for (;;) { 1604 va_start(ap, fmt); 1605 fprintf(err_file, "%s: ", progname); 1606 (void)vfprintf(err_file, fmt, ap); 1607 va_end(ap); 1608 (void)fprintf(err_file, "\n"); 1609 (void)fflush(err_file); 1610 if (err_file == stderr) 1611 break; 1612 err_file = stderr; 1613 } 1614 } 1615 1616 /*- 1617 * Fatal -- 1618 * Produce a Fatal error message. If jobs are running, waits for them 1619 * to finish. 1620 * 1621 * Results: 1622 * None 1623 * 1624 * Side Effects: 1625 * The program exits 1626 */ 1627 /* VARARGS */ 1628 void 1629 Fatal(const char *fmt, ...) 1630 { 1631 va_list ap; 1632 1633 va_start(ap, fmt); 1634 if (jobsRunning) 1635 Job_Wait(); 1636 1637 (void)vfprintf(stderr, fmt, ap); 1638 va_end(ap); 1639 (void)fprintf(stderr, "\n"); 1640 (void)fflush(stderr); 1641 1642 PrintOnError(NULL); 1643 1644 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1645 Targ_PrintGraph(2); 1646 Trace_Log(MAKEERROR, 0); 1647 exit(2); /* Not 1 so -q can distinguish error */ 1648 } 1649 1650 /* 1651 * Punt -- 1652 * Major exception once jobs are being created. Kills all jobs, prints 1653 * a message and exits. 1654 * 1655 * Results: 1656 * None 1657 * 1658 * Side Effects: 1659 * All children are killed indiscriminately and the program Lib_Exits 1660 */ 1661 /* VARARGS */ 1662 void 1663 Punt(const char *fmt, ...) 1664 { 1665 va_list ap; 1666 1667 va_start(ap, fmt); 1668 (void)fprintf(stderr, "%s: ", progname); 1669 (void)vfprintf(stderr, fmt, ap); 1670 va_end(ap); 1671 (void)fprintf(stderr, "\n"); 1672 (void)fflush(stderr); 1673 1674 PrintOnError(NULL); 1675 1676 DieHorribly(); 1677 } 1678 1679 /*- 1680 * DieHorribly -- 1681 * Exit without giving a message. 1682 * 1683 * Results: 1684 * None 1685 * 1686 * Side Effects: 1687 * A big one... 1688 */ 1689 void 1690 DieHorribly(void) 1691 { 1692 if (jobsRunning) 1693 Job_AbortAll(); 1694 if (DEBUG(GRAPH2)) 1695 Targ_PrintGraph(2); 1696 Trace_Log(MAKEERROR, 0); 1697 exit(2); /* Not 1, so -q can distinguish error */ 1698 } 1699 1700 /* 1701 * Finish -- 1702 * Called when aborting due to errors in child shell to signal 1703 * abnormal exit. 1704 * 1705 * Results: 1706 * None 1707 * 1708 * Side Effects: 1709 * The program exits 1710 */ 1711 void 1712 Finish(int errors) 1713 /* number of errors encountered in Make_Make */ 1714 { 1715 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1716 } 1717 1718 /* 1719 * enunlink -- 1720 * Remove a file carefully, avoiding directories. 1721 */ 1722 int 1723 eunlink(const char *file) 1724 { 1725 struct stat st; 1726 1727 if (lstat(file, &st) == -1) 1728 return -1; 1729 1730 if (S_ISDIR(st.st_mode)) { 1731 errno = EISDIR; 1732 return -1; 1733 } 1734 return unlink(file); 1735 } 1736 1737 /* 1738 * execError -- 1739 * Print why exec failed, avoiding stdio. 1740 */ 1741 void 1742 execError(const char *af, const char *av) 1743 { 1744 #ifdef USE_IOVEC 1745 int i = 0; 1746 struct iovec iov[8]; 1747 #define IOADD(s) \ 1748 (void)(iov[i].iov_base = UNCONST(s), \ 1749 iov[i].iov_len = strlen(iov[i].iov_base), \ 1750 i++) 1751 #else 1752 #define IOADD(void)write(2, s, strlen(s)) 1753 #endif 1754 1755 IOADD(progname); 1756 IOADD(": "); 1757 IOADD(af); 1758 IOADD("("); 1759 IOADD(av); 1760 IOADD(") failed ("); 1761 IOADD(strerror(errno)); 1762 IOADD(")\n"); 1763 1764 #ifdef USE_IOVEC 1765 (void)writev(2, iov, 8); 1766 #endif 1767 } 1768 1769 /* 1770 * usage -- 1771 * exit with usage message 1772 */ 1773 static void 1774 usage(void) 1775 { 1776 (void)fprintf(stderr, 1777 "usage: %s [-BeikNnqrstWX] [-D variable] [-d flags] [-f makefile]\n\ 1778 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1779 [-V variable] [variable=value] [target ...]\n", progname); 1780 exit(2); 1781 } 1782 1783 1784 int 1785 PrintAddr(void *a, void *b) 1786 { 1787 printf("%lx ", (unsigned long) a); 1788 return b ? 0 : 0; 1789 } 1790 1791 1792 1793 void 1794 PrintOnError(const char *s) 1795 { 1796 char tmp[64]; 1797 char *cp; 1798 1799 if (s) 1800 printf("%s", s); 1801 1802 printf("\n%s: stopped in %s\n", progname, curdir); 1803 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1804 sizeof(tmp) - 1); 1805 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1806 if (cp) { 1807 if (*cp) 1808 printf("%s", cp); 1809 free(cp); 1810 } 1811 } 1812 1813 void 1814 Main_ExportMAKEFLAGS(Boolean first) 1815 { 1816 static int once = 1; 1817 char tmp[64]; 1818 char *s; 1819 1820 if (once != first) 1821 return; 1822 once = 0; 1823 1824 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1825 sizeof(tmp)); 1826 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1827 if (s && *s) { 1828 #ifdef POSIX 1829 setenv("MAKEFLAGS", s, 1); 1830 #else 1831 setenv("MAKE", s, 1); 1832 #endif 1833 } 1834 } 1835
Indexes created Wed Sep 24 22:09:59 GMT 2025