main.c revision 1.180
1 /* $NetBSD: main.c,v 1.180 2010/04/22 19:11:17 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 1.180 2010/04/22 19:11:17 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 1.180 2010/04/22 19:11:17 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 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 389 break; 390 case 'C': 391 if (chdir(argvalue) == -1) { 392 (void)fprintf(stderr, 393 "%s: chdir %s: %s\n", 394 progname, argvalue, 395 strerror(errno)); 396 exit(1); 397 } 398 if (getcwd(curdir, MAXPATHLEN) == NULL) { 399 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 400 exit(2); 401 } 402 ignorePWD = TRUE; 403 break; 404 case 'D': 405 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 406 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 407 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 408 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 409 break; 410 case 'I': 411 if (argvalue == NULL) goto noarg; 412 Parse_AddIncludeDir(argvalue); 413 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 414 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 415 break; 416 case 'J': 417 if (argvalue == NULL) goto noarg; 418 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 419 (void)fprintf(stderr, 420 "%s: internal error -- J option malformed (%s)\n", 421 progname, argvalue); 422 usage(); 423 } 424 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 425 (fcntl(jp_1, F_GETFD, 0) < 0)) { 426 #if 0 427 (void)fprintf(stderr, 428 "%s: ###### warning -- J descriptors were closed!\n", 429 progname); 430 exit(2); 431 #endif 432 jp_0 = -1; 433 jp_1 = -1; 434 compatMake = TRUE; 435 } else { 436 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 437 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 438 jobServer = TRUE; 439 } 440 break; 441 case 'N': 442 noExecute = TRUE; 443 noRecursiveExecute = TRUE; 444 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 445 break; 446 case 'S': 447 keepgoing = FALSE; 448 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 449 break; 450 case 'T': 451 if (argvalue == NULL) goto noarg; 452 tracefile = bmake_strdup(argvalue); 453 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 454 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 455 break; 456 case 'V': 457 if (argvalue == NULL) goto noarg; 458 printVars = TRUE; 459 (void)Lst_AtEnd(variables, argvalue); 460 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 461 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 462 break; 463 case 'W': 464 parseWarnFatal = TRUE; 465 break; 466 case 'X': 467 varNoExportEnv = TRUE; 468 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 469 break; 470 case 'd': 471 if (argvalue == NULL) goto noarg; 472 /* If '-d-opts' don't pass to children */ 473 if (argvalue[0] == '-') 474 argvalue++; 475 else { 476 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 477 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 478 } 479 parse_debug_options(argvalue); 480 break; 481 case 'e': 482 checkEnvFirst = TRUE; 483 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 484 break; 485 case 'f': 486 if (argvalue == NULL) goto noarg; 487 (void)Lst_AtEnd(makefiles, argvalue); 488 break; 489 case 'i': 490 ignoreErrors = TRUE; 491 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 492 break; 493 case 'j': 494 if (argvalue == NULL) goto noarg; 495 forceJobs = TRUE; 496 maxJobs = strtol(argvalue, &p, 0); 497 if (*p != '\0' || maxJobs < 1) { 498 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 499 progname); 500 exit(1); 501 } 502 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 503 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 504 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 505 maxJobTokens = maxJobs; 506 break; 507 case 'k': 508 keepgoing = TRUE; 509 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 510 break; 511 case 'm': 512 if (argvalue == NULL) goto noarg; 513 /* look for magic parent directory search string */ 514 if (strncmp(".../", argvalue, 4) == 0) { 515 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 516 found_path, sizeof(found_path))) 517 break; /* nothing doing */ 518 (void)Dir_AddDir(sysIncPath, found_path); 519 } else { 520 (void)Dir_AddDir(sysIncPath, argvalue); 521 } 522 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 523 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 524 break; 525 case 'n': 526 noExecute = TRUE; 527 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 528 break; 529 case 'q': 530 queryFlag = TRUE; 531 /* Kind of nonsensical, wot? */ 532 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 533 break; 534 case 'r': 535 noBuiltins = TRUE; 536 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 537 break; 538 case 's': 539 beSilent = TRUE; 540 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 541 break; 542 case 't': 543 touchFlag = TRUE; 544 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 545 break; 546 case '-': 547 dashDash = TRUE; 548 break; 549 default: 550 case '?': 551 usage(); 552 } 553 argv += arginc; 554 argc -= arginc; 555 } 556 557 oldVars = TRUE; 558 559 /* 560 * See if the rest of the arguments are variable assignments and 561 * perform them if so. Else take them to be targets and stuff them 562 * on the end of the "create" list. 563 */ 564 for (; argc > 1; ++argv, --argc) 565 if (Parse_IsVar(argv[1])) { 566 Parse_DoVar(argv[1], VAR_CMD); 567 } else { 568 if (!*argv[1]) 569 Punt("illegal (null) argument."); 570 if (*argv[1] == '-' && !dashDash) 571 goto rearg; 572 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 573 } 574 575 return; 576 noarg: 577 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 578 progname, c); 579 usage(); 580 } 581 582 /*- 583 * Main_ParseArgLine -- 584 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 585 * is encountered and by main() when reading the .MAKEFLAGS envariable. 586 * Takes a line of arguments and breaks it into its 587 * component words and passes those words and the number of them to the 588 * MainParseArgs function. 589 * The line should have all its leading whitespace removed. 590 * 591 * Input: 592 * line Line to fracture 593 * 594 * Results: 595 * None 596 * 597 * Side Effects: 598 * Only those that come from the various arguments. 599 */ 600 void 601 Main_ParseArgLine(const char *line) 602 { 603 char **argv; /* Manufactured argument vector */ 604 int argc; /* Number of arguments in argv */ 605 char *args; /* Space used by the args */ 606 char *buf, *p1; 607 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 608 size_t len; 609 610 if (line == NULL) 611 return; 612 for (; *line == ' '; ++line) 613 continue; 614 if (!*line) 615 return; 616 617 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 618 (void)snprintf(buf, len, "%s %s", argv0, line); 619 if (p1) 620 free(p1); 621 622 argv = brk_string(buf, &argc, TRUE, &args); 623 if (argv == NULL) { 624 Error("Unterminated quoted string [%s]", buf); 625 free(buf); 626 return; 627 } 628 free(buf); 629 MainParseArgs(argc, argv); 630 631 free(args); 632 free(argv); 633 } 634 635 Boolean 636 Main_SetObjdir(const char *path) 637 { 638 struct stat sb; 639 char *p = NULL; 640 char buf[MAXPATHLEN + 1]; 641 Boolean rc = FALSE; 642 643 /* expand variable substitutions */ 644 if (strchr(path, '$') != 0) { 645 snprintf(buf, MAXPATHLEN, "%s", path); 646 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 647 } 648 649 if (path[0] != '/') { 650 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 651 path = buf; 652 } 653 654 /* look for the directory and try to chdir there */ 655 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 656 if (chdir(path)) { 657 (void)fprintf(stderr, "make warning: %s: %s.\n", 658 path, strerror(errno)); 659 } else { 660 strncpy(objdir, path, MAXPATHLEN); 661 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 662 setenv("PWD", objdir, 1); 663 Dir_InitDot(); 664 rc = TRUE; 665 } 666 } 667 668 if (p) 669 free(p); 670 return rc; 671 } 672 673 /*- 674 * ReadAllMakefiles -- 675 * wrapper around ReadMakefile() to read all. 676 * 677 * Results: 678 * TRUE if ok, FALSE on error 679 */ 680 static int 681 ReadAllMakefiles(const void *p, const void *q) 682 { 683 return (ReadMakefile(p, q) == 0); 684 } 685 686 static int 687 str2Lst_Append(Lst lp, char *str, const char *sep) 688 { 689 char *cp; 690 int n; 691 692 if (!sep) 693 sep = " \t"; 694 695 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 696 (void)Lst_AtEnd(lp, cp); 697 n++; 698 } 699 return (n); 700 } 701 702 #ifdef SIGINFO 703 /*ARGSUSED*/ 704 static void 705 siginfo(int signo) 706 { 707 char dir[MAXPATHLEN]; 708 char str[2 * MAXPATHLEN]; 709 int len; 710 if (getcwd(dir, sizeof(dir)) == NULL) 711 return; 712 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 713 if (len > 0) 714 (void)write(STDERR_FILENO, str, (size_t)len); 715 } 716 #endif 717 718 /* 719 * Allow makefiles some control over the mode we run in. 720 */ 721 void 722 MakeMode(const char *mode) 723 { 724 char *mp = NULL; 725 726 if (!mode) 727 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 728 729 if (mode && *mode) { 730 if (strstr(mode, "compat")) { 731 compatMake = TRUE; 732 forceJobs = FALSE; 733 } 734 } 735 if (mp) 736 free(mp); 737 } 738 739 /*- 740 * main -- 741 * The main function, for obvious reasons. Initializes variables 742 * and a few modules, then parses the arguments give it in the 743 * environment and on the command line. Reads the system makefile 744 * followed by either Makefile, makefile or the file given by the 745 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 746 * flags it has received by then uses either the Make or the Compat 747 * module to create the initial list of targets. 748 * 749 * Results: 750 * If -q was given, exits -1 if anything was out-of-date. Else it exits 751 * 0. 752 * 753 * Side Effects: 754 * The program exits when done. Targets are created. etc. etc. etc. 755 */ 756 int 757 main(int argc, char **argv) 758 { 759 Lst targs; /* target nodes to create -- passed to Make_Init */ 760 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 761 struct stat sb, sa; 762 char *p1, *path, *pwd; 763 char mdpath[MAXPATHLEN]; 764 char *machine = getenv("MACHINE"); 765 const char *machine_arch = getenv("MACHINE_ARCH"); 766 char *syspath = getenv("MAKESYSPATH"); 767 Lst sysMkPath; /* Path of sys.mk */ 768 char *cp = NULL, *start; 769 /* avoid faults on read-only strings */ 770 static char defsyspath[] = _PATH_DEFSYSPATH; 771 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 772 struct timeval rightnow; /* to initialize random seed */ 773 #ifdef MAKE_NATIVE 774 struct utsname utsname; 775 #endif 776 777 /* default to writing debug to stderr */ 778 debug_file = stderr; 779 780 #ifdef SIGINFO 781 (void)signal(SIGINFO, siginfo); 782 #endif 783 /* 784 * Set the seed to produce a different random sequence 785 * on each program execution. 786 */ 787 gettimeofday(&rightnow, NULL); 788 srandom(rightnow.tv_sec + rightnow.tv_usec); 789 790 if ((progname = strrchr(argv[0], '/')) != NULL) 791 progname++; 792 else 793 progname = argv[0]; 794 #ifdef RLIMIT_NOFILE 795 /* 796 * get rid of resource limit on file descriptors 797 */ 798 { 799 struct rlimit rl; 800 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 801 rl.rlim_cur != rl.rlim_max) { 802 rl.rlim_cur = rl.rlim_max; 803 (void)setrlimit(RLIMIT_NOFILE, &rl); 804 } 805 } 806 #endif 807 808 /* 809 * Get the name of this type of MACHINE from utsname 810 * so we can share an executable for similar machines. 811 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 812 * 813 * Note that both MACHINE and MACHINE_ARCH are decided at 814 * run-time. 815 */ 816 if (!machine) { 817 #ifdef MAKE_NATIVE 818 if (uname(&utsname) == -1) { 819 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 820 strerror(errno)); 821 exit(2); 822 } 823 machine = utsname.machine; 824 #else 825 #ifdef MAKE_MACHINE 826 machine = MAKE_MACHINE; 827 #else 828 machine = "unknown"; 829 #endif 830 #endif 831 } 832 833 if (!machine_arch) { 834 #ifndef MACHINE_ARCH 835 #ifdef MAKE_MACHINE_ARCH 836 machine_arch = MAKE_MACHINE_ARCH; 837 #else 838 machine_arch = "unknown"; 839 #endif 840 #else 841 machine_arch = MACHINE_ARCH; 842 #endif 843 } 844 845 /* 846 * Just in case MAKEOBJDIR wants us to do something tricky. 847 */ 848 Var_Init(); /* Initialize the lists of variables for 849 * parsing arguments */ 850 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 851 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 852 #ifdef MAKE_VERSION 853 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 854 #endif 855 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 856 /* 857 * This is the traditional preference for makefiles. 858 */ 859 #ifndef MAKEFILE_PREFERENCE_LIST 860 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 861 #endif 862 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 863 VAR_GLOBAL, 0); 864 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 865 866 create = Lst_Init(FALSE); 867 makefiles = Lst_Init(FALSE); 868 printVars = FALSE; 869 variables = Lst_Init(FALSE); 870 beSilent = FALSE; /* Print commands as executed */ 871 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 872 noExecute = FALSE; /* Execute all commands */ 873 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 874 keepgoing = FALSE; /* Stop on error */ 875 allPrecious = FALSE; /* Remove targets when interrupted */ 876 queryFlag = FALSE; /* This is not just a check-run */ 877 noBuiltins = FALSE; /* Read the built-in rules */ 878 touchFlag = FALSE; /* Actually update targets */ 879 debug = 0; /* No debug verbosity, please. */ 880 jobsRunning = FALSE; 881 882 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 883 maxJobTokens = maxJobs; 884 compatMake = FALSE; /* No compat mode */ 885 ignorePWD = FALSE; 886 887 /* 888 * Initialize the parsing, directory and variable modules to prepare 889 * for the reading of inclusion paths and variable settings on the 890 * command line 891 */ 892 893 /* 894 * Initialize various variables. 895 * MAKE also gets this name, for compatibility 896 * .MAKEFLAGS gets set to the empty string just in case. 897 * MFLAGS also gets initialized empty, for compatibility. 898 */ 899 Parse_Init(); 900 if (argv[0][0] == '/') { 901 p1 = argv[0]; 902 } else { 903 p1 = realpath(argv[0], mdpath); 904 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 905 p1 = argv[0]; /* realpath failed */ 906 } 907 } 908 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 909 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 910 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 911 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 912 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 913 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 914 915 /* 916 * Set some other useful macros 917 */ 918 { 919 char tmp[64]; 920 const char *ep; 921 922 if (!(ep = getenv(MAKE_LEVEL))) { 923 ep = "0"; 924 } 925 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0); 926 snprintf(tmp, sizeof(tmp), "%u", getpid()); 927 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 928 snprintf(tmp, sizeof(tmp), "%u", getppid()); 929 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 930 } 931 Job_SetPrefix(); 932 933 /* 934 * First snag any flags out of the MAKE environment variable. 935 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 936 * in a different format). 937 */ 938 #ifdef POSIX 939 Main_ParseArgLine(getenv("MAKEFLAGS")); 940 #else 941 Main_ParseArgLine(getenv("MAKE")); 942 #endif 943 944 /* 945 * Find where we are (now). 946 * We take care of PWD for the automounter below... 947 */ 948 if (getcwd(curdir, MAXPATHLEN) == NULL) { 949 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 950 exit(2); 951 } 952 953 MainParseArgs(argc, argv); 954 955 /* 956 * Verify that cwd is sane. 957 */ 958 if (stat(curdir, &sa) == -1) { 959 (void)fprintf(stderr, "%s: %s: %s.\n", 960 progname, curdir, strerror(errno)); 961 exit(2); 962 } 963 964 /* 965 * All this code is so that we know where we are when we start up 966 * on a different machine with pmake. 967 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 968 * since the value of curdir can vary depending on how we got 969 * here. Ie sitting at a shell prompt (shell that provides $PWD) 970 * or via subdir.mk in which case its likely a shell which does 971 * not provide it. 972 * So, to stop it breaking this case only, we ignore PWD if 973 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 974 */ 975 if (!ignorePWD && 976 (pwd = getenv("PWD")) != NULL && 977 getenv("MAKEOBJDIRPREFIX") == NULL) { 978 const char *makeobjdir = getenv("MAKEOBJDIR"); 979 980 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 981 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 982 sa.st_dev == sb.st_dev) 983 (void)strncpy(curdir, pwd, MAXPATHLEN); 984 } 985 } 986 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 987 988 /* 989 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 990 * MAKEOBJDIR is set in the environment, try only that value 991 * and fall back to .CURDIR if it does not exist. 992 * 993 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 994 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 995 * of these paths exist, just use .CURDIR. 996 */ 997 Dir_Init(curdir); 998 (void)Main_SetObjdir(curdir); 999 1000 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 1001 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 1002 (void)Main_SetObjdir(mdpath); 1003 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1004 (void)Main_SetObjdir(path); 1005 } else { 1006 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1007 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1008 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1009 _PATH_OBJDIRPREFIX, curdir); 1010 (void)Main_SetObjdir(mdpath); 1011 } 1012 } 1013 1014 /* 1015 * Be compatible if user did not specify -j and did not explicitly 1016 * turned compatibility on 1017 */ 1018 if (!compatMake && !forceJobs) { 1019 compatMake = TRUE; 1020 } 1021 1022 /* 1023 * Initialize archive, target and suffix modules in preparation for 1024 * parsing the makefile(s) 1025 */ 1026 Arch_Init(); 1027 Targ_Init(); 1028 Suff_Init(); 1029 Trace_Init(tracefile); 1030 1031 DEFAULT = NULL; 1032 (void)time(&now); 1033 1034 Trace_Log(MAKESTART, NULL); 1035 1036 /* 1037 * Set up the .TARGETS variable to contain the list of targets to be 1038 * created. If none specified, make the variable empty -- the parser 1039 * will fill the thing in with the default or .MAIN target. 1040 */ 1041 if (!Lst_IsEmpty(create)) { 1042 LstNode ln; 1043 1044 for (ln = Lst_First(create); ln != NULL; 1045 ln = Lst_Succ(ln)) { 1046 char *name = (char *)Lst_Datum(ln); 1047 1048 Var_Append(".TARGETS", name, VAR_GLOBAL); 1049 } 1050 } else 1051 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1052 1053 1054 /* 1055 * If no user-supplied system path was given (through the -m option) 1056 * add the directories from the DEFSYSPATH (more than one may be given 1057 * as dir1:...:dirn) to the system include path. 1058 */ 1059 if (syspath == NULL || *syspath == '\0') 1060 syspath = defsyspath; 1061 else 1062 syspath = bmake_strdup(syspath); 1063 1064 for (start = syspath; *start != '\0'; start = cp) { 1065 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1066 continue; 1067 if (*cp == ':') { 1068 *cp++ = '\0'; 1069 } 1070 /* look for magic parent directory search string */ 1071 if (strncmp(".../", start, 4) != 0) { 1072 (void)Dir_AddDir(defIncPath, start); 1073 } else { 1074 if (Dir_FindHereOrAbove(curdir, start+4, 1075 found_path, sizeof(found_path))) { 1076 (void)Dir_AddDir(defIncPath, found_path); 1077 } 1078 } 1079 } 1080 if (syspath != defsyspath) 1081 free(syspath); 1082 1083 /* 1084 * Read in the built-in rules first, followed by the specified 1085 * makefile, if it was (makefile != NULL), or the default 1086 * makefile and Makefile, in that order, if it wasn't. 1087 */ 1088 if (!noBuiltins) { 1089 LstNode ln; 1090 1091 sysMkPath = Lst_Init(FALSE); 1092 Dir_Expand(_PATH_DEFSYSMK, 1093 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1094 sysMkPath); 1095 if (Lst_IsEmpty(sysMkPath)) 1096 Fatal("%s: no system rules (%s).", progname, 1097 _PATH_DEFSYSMK); 1098 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1099 if (ln == NULL) 1100 Fatal("%s: cannot open %s.", progname, 1101 (char *)Lst_Datum(ln)); 1102 } 1103 1104 if (!Lst_IsEmpty(makefiles)) { 1105 LstNode ln; 1106 1107 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1108 if (ln != NULL) 1109 Fatal("%s: cannot open %s.", progname, 1110 (char *)Lst_Datum(ln)); 1111 } else { 1112 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1113 VAR_CMD, 0); 1114 if (p1) { 1115 (void)str2Lst_Append(makefiles, p1, NULL); 1116 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1117 free(p1); 1118 } 1119 } 1120 1121 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1122 if (!noBuiltins || !printVars) { 1123 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1124 VAR_CMD, 0); 1125 doing_depend = TRUE; 1126 (void)ReadMakefile(makeDependfile, NULL); 1127 doing_depend = FALSE; 1128 } 1129 1130 MakeMode(NULL); 1131 1132 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1133 if (p1) 1134 free(p1); 1135 1136 if (!compatMake) 1137 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1138 if (DEBUG(JOB)) 1139 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1140 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1141 1142 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1143 1144 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1145 1146 1147 /* 1148 * For compatibility, look at the directories in the VPATH variable 1149 * and add them to the search path, if the variable is defined. The 1150 * variable's value is in the same format as the PATH envariable, i.e. 1151 * <directory>:<directory>:<directory>... 1152 */ 1153 if (Var_Exists("VPATH", VAR_CMD)) { 1154 char *vpath, savec; 1155 /* 1156 * GCC stores string constants in read-only memory, but 1157 * Var_Subst will want to write this thing, so store it 1158 * in an array 1159 */ 1160 static char VPATH[] = "${VPATH}"; 1161 1162 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1163 path = vpath; 1164 do { 1165 /* skip to end of directory */ 1166 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1167 continue; 1168 /* Save terminator character so know when to stop */ 1169 savec = *cp; 1170 *cp = '\0'; 1171 /* Add directory to search path */ 1172 (void)Dir_AddDir(dirSearchPath, path); 1173 *cp = savec; 1174 path = cp + 1; 1175 } while (savec == ':'); 1176 free(vpath); 1177 } 1178 1179 /* 1180 * Now that all search paths have been read for suffixes et al, it's 1181 * time to add the default search path to their lists... 1182 */ 1183 Suff_DoPaths(); 1184 1185 /* 1186 * Propagate attributes through :: dependency lists. 1187 */ 1188 Targ_Propagate(); 1189 1190 /* print the initial graph, if the user requested it */ 1191 if (DEBUG(GRAPH1)) 1192 Targ_PrintGraph(1); 1193 1194 /* print the values of any variables requested by the user */ 1195 if (printVars) { 1196 LstNode ln; 1197 1198 for (ln = Lst_First(variables); ln != NULL; 1199 ln = Lst_Succ(ln)) { 1200 char *var = (char *)Lst_Datum(ln); 1201 char *value; 1202 1203 if (strchr(var, '$')) { 1204 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1205 } else { 1206 value = Var_Value(var, VAR_GLOBAL, &p1); 1207 } 1208 printf("%s\n", value ? value : ""); 1209 if (p1) 1210 free(p1); 1211 } 1212 } else { 1213 /* 1214 * Have now read the entire graph and need to make a list of 1215 * targets to create. If none was given on the command line, 1216 * we consult the parsing module to find the main target(s) 1217 * to create. 1218 */ 1219 if (Lst_IsEmpty(create)) 1220 targs = Parse_MainName(); 1221 else 1222 targs = Targ_FindList(create, TARG_CREATE); 1223 1224 if (!compatMake) { 1225 /* 1226 * Initialize job module before traversing the graph 1227 * now that any .BEGIN and .END targets have been read. 1228 * This is done only if the -q flag wasn't given 1229 * (to prevent the .BEGIN from being executed should 1230 * it exist). 1231 */ 1232 if (!queryFlag) { 1233 Job_Init(); 1234 jobsRunning = TRUE; 1235 } 1236 1237 /* Traverse the graph, checking on all the targets */ 1238 outOfDate = Make_Run(targs); 1239 } else { 1240 /* 1241 * Compat_Init will take care of creating all the 1242 * targets as well as initializing the module. 1243 */ 1244 Compat_Run(targs); 1245 } 1246 } 1247 1248 #ifdef CLEANUP 1249 Lst_Destroy(targs, NULL); 1250 Lst_Destroy(variables, NULL); 1251 Lst_Destroy(makefiles, NULL); 1252 Lst_Destroy(create, (FreeProc *)free); 1253 #endif 1254 1255 /* print the graph now it's been processed if the user requested it */ 1256 if (DEBUG(GRAPH2)) 1257 Targ_PrintGraph(2); 1258 1259 Trace_Log(MAKEEND, 0); 1260 1261 Suff_End(); 1262 Targ_End(); 1263 Arch_End(); 1264 Var_End(); 1265 Parse_End(); 1266 Dir_End(); 1267 Job_End(); 1268 Trace_End(); 1269 1270 return outOfDate ? 1 : 0; 1271 } 1272 1273 /*- 1274 * ReadMakefile -- 1275 * Open and parse the given makefile. 1276 * 1277 * Results: 1278 * 0 if ok. -1 if couldn't open file. 1279 * 1280 * Side Effects: 1281 * lots 1282 */ 1283 static int 1284 ReadMakefile(const void *p, const void *q __unused) 1285 { 1286 const char *fname = p; /* makefile to read */ 1287 int fd; 1288 size_t len = MAXPATHLEN; 1289 char *name, *path = bmake_malloc(len); 1290 1291 if (!strcmp(fname, "-")) { 1292 Parse_File("(stdin)", dup(fileno(stdin))); 1293 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1294 } else { 1295 /* if we've chdir'd, rebuild the path name */ 1296 if (strcmp(curdir, objdir) && *fname != '/') { 1297 size_t plen = strlen(curdir) + strlen(fname) + 2; 1298 if (len < plen) 1299 path = bmake_realloc(path, len = 2 * plen); 1300 1301 (void)snprintf(path, len, "%s/%s", curdir, fname); 1302 fd = open(path, O_RDONLY); 1303 if (fd != -1) { 1304 fname = path; 1305 goto found; 1306 } 1307 1308 /* If curdir failed, try objdir (ala .depend) */ 1309 plen = strlen(objdir) + strlen(fname) + 2; 1310 if (len < plen) 1311 path = bmake_realloc(path, len = 2 * plen); 1312 (void)snprintf(path, len, "%s/%s", objdir, fname); 1313 fd = open(path, O_RDONLY); 1314 if (fd != -1) { 1315 fname = path; 1316 goto found; 1317 } 1318 } else { 1319 fd = open(fname, O_RDONLY); 1320 if (fd != -1) 1321 goto found; 1322 } 1323 /* look in -I and system include directories. */ 1324 name = Dir_FindFile(fname, parseIncPath); 1325 if (!name) 1326 name = Dir_FindFile(fname, 1327 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1328 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1329 if (name) 1330 free(name); 1331 free(path); 1332 return(-1); 1333 } 1334 fname = name; 1335 /* 1336 * set the MAKEFILE variable desired by System V fans -- the 1337 * placement of the setting here means it gets set to the last 1338 * makefile specified, as it is set by SysV make. 1339 */ 1340 found: 1341 if (!doing_depend) 1342 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1343 Parse_File(fname, fd); 1344 } 1345 free(path); 1346 return(0); 1347 } 1348 1349 1350 /* 1351 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1352 * in situations that would not arrise with ./obj (links or not). 1353 * This tends to break things like: 1354 * 1355 * build: 1356 * ${MAKE} includes 1357 * 1358 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1359 * opposed to an argument) in a command line and if so returns 1360 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1361 * the Makefile hold true. 1362 * 1363 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1364 * 1365 * The chdir() only happens in the child process, and does nothing if 1366 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1367 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1368 * do nothing - to ensure historic semantics can be retained. 1369 */ 1370 static int Check_Cwd_Off = 0; 1371 1372 static char * 1373 Check_Cwd_av(int ac, char **av, int copy) 1374 { 1375 static char *make[4]; 1376 static char *cur_dir = NULL; 1377 char **mp; 1378 char *cp; 1379 int is_cmd, next_cmd; 1380 int i; 1381 int n; 1382 1383 if (Check_Cwd_Off) { 1384 if (DEBUG(CWD)) 1385 fprintf(debug_file, "check_cwd: check is off.\n"); 1386 return NULL; 1387 } 1388 1389 if (make[0] == NULL) { 1390 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1391 Check_Cwd_Off = 1; 1392 if (DEBUG(CWD)) 1393 fprintf(debug_file, "check_cwd: turning check off.\n"); 1394 return NULL; 1395 } 1396 1397 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1398 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1399 make[0] = make[1]; 1400 make[1] = NULL; 1401 } else 1402 ++make[0]; 1403 make[2] = NULL; 1404 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1405 } 1406 if (ac == 0 || av == NULL) { 1407 if (DEBUG(CWD)) 1408 fprintf(debug_file, "check_cwd: empty command.\n"); 1409 return NULL; /* initialization only */ 1410 } 1411 1412 if (getenv("MAKEOBJDIR") == NULL && 1413 getenv("MAKEOBJDIRPREFIX") == NULL) { 1414 if (DEBUG(CWD)) 1415 fprintf(debug_file, "check_cwd: no obj dirs.\n"); 1416 return NULL; 1417 } 1418 1419 1420 next_cmd = 1; 1421 for (i = 0; i < ac; ++i) { 1422 is_cmd = next_cmd; 1423 1424 n = strlen(av[i]); 1425 cp = &(av[i])[n - 1]; 1426 if (strspn(av[i], "|&;") == (size_t)n) { 1427 next_cmd = 1; 1428 continue; 1429 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1430 next_cmd = 1; 1431 if (copy) { 1432 do { 1433 *cp-- = '\0'; 1434 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1435 *cp == ')' || *cp == '}') ; 1436 } else { 1437 /* 1438 * XXX this should not happen. 1439 */ 1440 fprintf(stderr, "%s: WARNING: raw arg ends in shell meta '%s'\n", 1441 progname, av[i]); 1442 } 1443 } else 1444 next_cmd = 0; 1445 1446 cp = av[i]; 1447 if (*cp == ';' || *cp == '&' || *cp == '|') 1448 is_cmd = 1; 1449 1450 if (DEBUG(CWD)) 1451 fprintf(debug_file, "av[%d] == %s '%s'", 1452 i, (is_cmd) ? "cmd" : "arg", av[i]); 1453 if (is_cmd != 0) { 1454 if (*cp == '(' || *cp == '{' || 1455 *cp == ';' || *cp == '&' || *cp == '|') { 1456 do { 1457 ++cp; 1458 } while (*cp == '(' || *cp == '{' || 1459 *cp == ';' || *cp == '&' || *cp == '|'); 1460 if (*cp == '\0') { 1461 next_cmd = 1; 1462 continue; 1463 } 1464 } 1465 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1466 if (DEBUG(CWD)) 1467 fprintf(debug_file, " == cd, done.\n"); 1468 return NULL; 1469 } 1470 for (mp = make; *mp != NULL; ++mp) { 1471 n = strlen(*mp); 1472 if (strcmp(cp, *mp) == 0) { 1473 if (DEBUG(CWD)) 1474 fprintf(debug_file, " %s == '%s', chdir(%s)\n", 1475 cp, *mp, cur_dir); 1476 return cur_dir; 1477 } 1478 } 1479 } 1480 if (DEBUG(CWD)) 1481 fprintf(debug_file, "\n"); 1482 } 1483 return NULL; 1484 } 1485 1486 char * 1487 Check_Cwd_Cmd(const char *cmd) 1488 { 1489 char *cp, *bp; 1490 char **av; 1491 int ac; 1492 1493 if (Check_Cwd_Off) 1494 return NULL; 1495 1496 if (cmd) { 1497 av = brk_string(cmd, &ac, TRUE, &bp); 1498 if (DEBUG(CWD)) 1499 fprintf(debug_file, "splitting: '%s' -> %d words\n", 1500 cmd, ac); 1501 } else { 1502 ac = 0; 1503 av = NULL; 1504 bp = NULL; 1505 } 1506 cp = Check_Cwd_av(ac, av, 1); 1507 if (bp) 1508 free(bp); 1509 if (av) 1510 free(av); 1511 return cp; 1512 } 1513 1514 void 1515 Check_Cwd(const char **argv) 1516 { 1517 char *cp; 1518 int ac; 1519 1520 if (Check_Cwd_Off) 1521 return; 1522 1523 for (ac = 0; argv[ac] != NULL; ++ac) 1524 /* NOTHING */; 1525 if (ac == 3 && *argv[1] == '-') { 1526 cp = Check_Cwd_Cmd(argv[2]); 1527 } else { 1528 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1529 } 1530 if (cp) { 1531 chdir(cp); 1532 } 1533 } 1534 1535 /*- 1536 * Cmd_Exec -- 1537 * Execute the command in cmd, and return the output of that command 1538 * in a string. 1539 * 1540 * Results: 1541 * A string containing the output of the command, or the empty string 1542 * If errnum is not NULL, it contains the reason for the command failure 1543 * 1544 * Side Effects: 1545 * The string must be freed by the caller. 1546 */ 1547 char * 1548 Cmd_Exec(const char *cmd, const char **errnum) 1549 { 1550 const char *args[4]; /* Args for invoking the shell */ 1551 int fds[2]; /* Pipe streams */ 1552 int cpid; /* Child PID */ 1553 int pid; /* PID from wait() */ 1554 char *res; /* result */ 1555 int status; /* command exit status */ 1556 Buffer buf; /* buffer to store the result */ 1557 char *cp; 1558 int cc; 1559 1560 1561 *errnum = NULL; 1562 1563 if (!shellName) 1564 Shell_Init(); 1565 /* 1566 * Set up arguments for shell 1567 */ 1568 args[0] = shellName; 1569 args[1] = "-c"; 1570 args[2] = cmd; 1571 args[3] = NULL; 1572 1573 /* 1574 * Open a pipe for fetching its output 1575 */ 1576 if (pipe(fds) == -1) { 1577 *errnum = "Couldn't create pipe for \"%s\""; 1578 goto bad; 1579 } 1580 1581 /* 1582 * Fork 1583 */ 1584 switch (cpid = vfork()) { 1585 case 0: 1586 /* 1587 * Close input side of pipe 1588 */ 1589 (void)close(fds[0]); 1590 1591 /* 1592 * Duplicate the output stream to the shell's output, then 1593 * shut the extra thing down. Note we don't fetch the error 1594 * stream...why not? Why? 1595 */ 1596 (void)dup2(fds[1], 1); 1597 (void)close(fds[1]); 1598 1599 Var_ExportVars(); 1600 1601 (void)execv(shellPath, UNCONST(args)); 1602 _exit(1); 1603 /*NOTREACHED*/ 1604 1605 case -1: 1606 *errnum = "Couldn't exec \"%s\""; 1607 goto bad; 1608 1609 default: 1610 /* 1611 * No need for the writing half 1612 */ 1613 (void)close(fds[1]); 1614 1615 Buf_Init(&buf, 0); 1616 1617 do { 1618 char result[BUFSIZ]; 1619 cc = read(fds[0], result, sizeof(result)); 1620 if (cc > 0) 1621 Buf_AddBytes(&buf, cc, result); 1622 } 1623 while (cc > 0 || (cc == -1 && errno == EINTR)); 1624 1625 /* 1626 * Close the input side of the pipe. 1627 */ 1628 (void)close(fds[0]); 1629 1630 /* 1631 * Wait for the process to exit. 1632 */ 1633 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) 1634 continue; 1635 1636 cc = Buf_Size(&buf); 1637 res = Buf_Destroy(&buf, FALSE); 1638 1639 if (cc == 0) 1640 *errnum = "Couldn't read shell's output for \"%s\""; 1641 1642 if (WIFSIGNALED(status)) 1643 *errnum = "\"%s\" exited on a signal"; 1644 else if (WEXITSTATUS(status) != 0) 1645 *errnum = "\"%s\" returned non-zero status"; 1646 1647 /* 1648 * Null-terminate the result, convert newlines to spaces and 1649 * install it in the variable. 1650 */ 1651 res[cc] = '\0'; 1652 cp = &res[cc]; 1653 1654 if (cc > 0 && *--cp == '\n') { 1655 /* 1656 * A final newline is just stripped 1657 */ 1658 *cp-- = '\0'; 1659 } 1660 while (cp >= res) { 1661 if (*cp == '\n') { 1662 *cp = ' '; 1663 } 1664 cp--; 1665 } 1666 break; 1667 } 1668 return res; 1669 bad: 1670 res = bmake_malloc(1); 1671 *res = '\0'; 1672 return res; 1673 } 1674 1675 /*- 1676 * Error -- 1677 * Print an error message given its format. 1678 * 1679 * Results: 1680 * None. 1681 * 1682 * Side Effects: 1683 * The message is printed. 1684 */ 1685 /* VARARGS */ 1686 void 1687 Error(const char *fmt, ...) 1688 { 1689 va_list ap; 1690 FILE *err_file; 1691 1692 err_file = debug_file; 1693 if (err_file == stdout) 1694 err_file = stderr; 1695 for (;;) { 1696 va_start(ap, fmt); 1697 fprintf(err_file, "%s: ", progname); 1698 (void)vfprintf(err_file, fmt, ap); 1699 va_end(ap); 1700 (void)fprintf(err_file, "\n"); 1701 (void)fflush(err_file); 1702 if (err_file == stderr) 1703 break; 1704 err_file = stderr; 1705 } 1706 } 1707 1708 /*- 1709 * Fatal -- 1710 * Produce a Fatal error message. If jobs are running, waits for them 1711 * to finish. 1712 * 1713 * Results: 1714 * None 1715 * 1716 * Side Effects: 1717 * The program exits 1718 */ 1719 /* VARARGS */ 1720 void 1721 Fatal(const char *fmt, ...) 1722 { 1723 va_list ap; 1724 1725 va_start(ap, fmt); 1726 if (jobsRunning) 1727 Job_Wait(); 1728 1729 (void)vfprintf(stderr, fmt, ap); 1730 va_end(ap); 1731 (void)fprintf(stderr, "\n"); 1732 (void)fflush(stderr); 1733 1734 PrintOnError(NULL, NULL); 1735 1736 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1737 Targ_PrintGraph(2); 1738 Trace_Log(MAKEERROR, 0); 1739 exit(2); /* Not 1 so -q can distinguish error */ 1740 } 1741 1742 /* 1743 * Punt -- 1744 * Major exception once jobs are being created. Kills all jobs, prints 1745 * a message and exits. 1746 * 1747 * Results: 1748 * None 1749 * 1750 * Side Effects: 1751 * All children are killed indiscriminately and the program Lib_Exits 1752 */ 1753 /* VARARGS */ 1754 void 1755 Punt(const char *fmt, ...) 1756 { 1757 va_list ap; 1758 1759 va_start(ap, fmt); 1760 (void)fprintf(stderr, "%s: ", progname); 1761 (void)vfprintf(stderr, fmt, ap); 1762 va_end(ap); 1763 (void)fprintf(stderr, "\n"); 1764 (void)fflush(stderr); 1765 1766 PrintOnError(NULL, NULL); 1767 1768 DieHorribly(); 1769 } 1770 1771 /*- 1772 * DieHorribly -- 1773 * Exit without giving a message. 1774 * 1775 * Results: 1776 * None 1777 * 1778 * Side Effects: 1779 * A big one... 1780 */ 1781 void 1782 DieHorribly(void) 1783 { 1784 if (jobsRunning) 1785 Job_AbortAll(); 1786 if (DEBUG(GRAPH2)) 1787 Targ_PrintGraph(2); 1788 Trace_Log(MAKEERROR, 0); 1789 exit(2); /* Not 1, so -q can distinguish error */ 1790 } 1791 1792 /* 1793 * Finish -- 1794 * Called when aborting due to errors in child shell to signal 1795 * abnormal exit. 1796 * 1797 * Results: 1798 * None 1799 * 1800 * Side Effects: 1801 * The program exits 1802 */ 1803 void 1804 Finish(int errors) 1805 /* number of errors encountered in Make_Make */ 1806 { 1807 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1808 } 1809 1810 /* 1811 * enunlink -- 1812 * Remove a file carefully, avoiding directories. 1813 */ 1814 int 1815 eunlink(const char *file) 1816 { 1817 struct stat st; 1818 1819 if (lstat(file, &st) == -1) 1820 return -1; 1821 1822 if (S_ISDIR(st.st_mode)) { 1823 errno = EISDIR; 1824 return -1; 1825 } 1826 return unlink(file); 1827 } 1828 1829 /* 1830 * execError -- 1831 * Print why exec failed, avoiding stdio. 1832 */ 1833 void 1834 execError(const char *af, const char *av) 1835 { 1836 #ifdef USE_IOVEC 1837 int i = 0; 1838 struct iovec iov[8]; 1839 #define IOADD(s) \ 1840 (void)(iov[i].iov_base = UNCONST(s), \ 1841 iov[i].iov_len = strlen(iov[i].iov_base), \ 1842 i++) 1843 #else 1844 #define IOADD(void)write(2, s, strlen(s)) 1845 #endif 1846 1847 IOADD(progname); 1848 IOADD(": "); 1849 IOADD(af); 1850 IOADD("("); 1851 IOADD(av); 1852 IOADD(") failed ("); 1853 IOADD(strerror(errno)); 1854 IOADD(")\n"); 1855 1856 #ifdef USE_IOVEC 1857 (void)writev(2, iov, 8); 1858 #endif 1859 } 1860 1861 /* 1862 * usage -- 1863 * exit with usage message 1864 */ 1865 static void 1866 usage(void) 1867 { 1868 (void)fprintf(stderr, 1869 "usage: %s [-BeikNnqrstWX] \n\ 1870 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1871 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1872 [-V variable] [variable=value] [target ...]\n", progname); 1873 exit(2); 1874 } 1875 1876 1877 int 1878 PrintAddr(void *a, void *b) 1879 { 1880 printf("%lx ", (unsigned long) a); 1881 return b ? 0 : 0; 1882 } 1883 1884 1885 1886 void 1887 PrintOnError(GNode *gn, const char *s) 1888 { 1889 static GNode *en = NULL; 1890 char tmp[64]; 1891 char *cp; 1892 1893 if (s) 1894 printf("%s", s); 1895 1896 printf("\n%s: stopped in %s\n", progname, curdir); 1897 1898 if (en) 1899 return; /* we've been here! */ 1900 if (gn) { 1901 /* 1902 * We can print this even if there is no .ERROR target. 1903 */ 1904 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1905 } 1906 /* 1907 * See if there is a .ERROR target, and run it if so. 1908 */ 1909 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1910 if (en) { 1911 en->type |= OP_SPECIAL; 1912 Compat_Make(en, en); 1913 } 1914 1915 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1916 sizeof(tmp) - 1); 1917 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1918 if (cp) { 1919 if (*cp) 1920 printf("%s", cp); 1921 free(cp); 1922 } 1923 } 1924 1925 void 1926 Main_ExportMAKEFLAGS(Boolean first) 1927 { 1928 static int once = 1; 1929 char tmp[64]; 1930 char *s; 1931 1932 if (once != first) 1933 return; 1934 once = 0; 1935 1936 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1937 sizeof(tmp)); 1938 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1939 if (s && *s) { 1940 #ifdef POSIX 1941 setenv("MAKEFLAGS", s, 1); 1942 #else 1943 setenv("MAKE", s, 1); 1944 #endif 1945 } 1946 } 1947 1948 /* 1949 * Create and open a temp file using "pattern". 1950 * If "fnamep" is provided set it to a copy of the filename created. 1951 * Otherwise unlink the file once open. 1952 */ 1953 int 1954 mkTempFile(const char *pattern, char **fnamep) 1955 { 1956 static char *tmpdir = NULL; 1957 char tfile[MAXPATHLEN]; 1958 int fd; 1959 1960 if (!pattern) 1961 pattern = TMPPAT; 1962 1963 if (!tmpdir) { 1964 struct stat st; 1965 1966 /* 1967 * Honor $TMPDIR but only if it is valid. 1968 * Ensure it ends with /. 1969 */ 1970 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U/tmp}/", VAR_GLOBAL, 0); 1971 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1972 free(tmpdir); 1973 tmpdir = bmake_strdup(_PATH_TMP); 1974 } 1975 } 1976 if (pattern[0] == '/') { 1977 strlcpy(tfile, pattern, sizeof(tfile)); 1978 } else { 1979 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1980 } 1981 if ((fd = mkstemp(tfile)) < 0) 1982 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1983 if (fnamep) { 1984 *fnamep = bmake_strdup(tfile); 1985 } else { 1986 unlink(tfile); /* we just want the descriptor */ 1987 } 1988 return fd; 1989 } 1990
Indexes created Tue Sep 23 07:09:52 GMT 2025