main.c revision 1.186
1 /* $NetBSD: main.c,v 1.186 2010/05/10 15:54:21 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 1.186 2010/05/10 15:54:21 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 1.186 2010/05/10 15:54:21 sjg Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and two optional 103 * arguments for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and two arguments. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and two arguments. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/signal.h> 121 #include <sys/stat.h> 122 #ifdef MAKE_NATIVE 123 #include <sys/utsname.h> 124 #endif 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <fcntl.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 134 #include "make.h" 135 #include "hash.h" 136 #include "dir.h" 137 #include "job.h" 138 #include "pathnames.h" 139 #include "trace.h" 140 141 #ifdef USE_IOVEC 142 #include <sys/uio.h> 143 #endif 144 145 #ifndef DEFMAXLOCAL 146 #define DEFMAXLOCAL DEFMAXJOBS 147 #endif /* DEFMAXLOCAL */ 148 149 Lst create; /* Targets to be made */ 150 time_t now; /* Time at start of make */ 151 GNode *DEFAULT; /* .DEFAULT node */ 152 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 153 154 static Boolean noBuiltins; /* -r flag */ 155 static Lst makefiles; /* ordered list of makefiles to read */ 156 static Boolean printVars; /* print value of one or more vars */ 157 static Lst variables; /* list of variables to print */ 158 int maxJobs; /* -j argument */ 159 static int maxJobTokens; /* -j argument */ 160 Boolean compatMake; /* -B argument */ 161 int debug; /* -d argument */ 162 Boolean noExecute; /* -n flag */ 163 Boolean noRecursiveExecute; /* -N flag */ 164 Boolean keepgoing; /* -k flag */ 165 Boolean queryFlag; /* -q flag */ 166 Boolean touchFlag; /* -t flag */ 167 Boolean ignoreErrors; /* -i flag */ 168 Boolean beSilent; /* -s flag */ 169 Boolean oldVars; /* variable substitution style */ 170 Boolean checkEnvFirst; /* -e flag */ 171 Boolean parseWarnFatal; /* -W flag */ 172 Boolean jobServer; /* -J flag */ 173 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 174 Boolean varNoExportEnv; /* -X flag */ 175 Boolean doing_depend; /* Set while reading .depend */ 176 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 177 static const char * tracefile; 178 static char * Check_Cwd_av(int, char **, int); 179 static void MainParseArgs(int, char **); 180 static int ReadMakefile(const void *, const void *); 181 static void usage(void); 182 183 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 184 static char curdir[MAXPATHLEN + 1]; /* startup directory */ 185 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 186 char *progname; /* the program name */ 187 char *makeDependfile; 188 pid_t myPid; 189 190 Boolean forceJobs = FALSE; 191 192 extern Lst parseIncPath; 193 194 static void 195 parse_debug_options(const char *argvalue) 196 { 197 const char *modules; 198 const char *mode; 199 char *fname; 200 int len; 201 202 for (modules = argvalue; *modules; ++modules) { 203 switch (*modules) { 204 case 'A': 205 debug = ~0; 206 break; 207 case 'a': 208 debug |= DEBUG_ARCH; 209 break; 210 case 'C': 211 debug |= DEBUG_CWD; 212 break; 213 case 'c': 214 debug |= DEBUG_COND; 215 break; 216 case 'd': 217 debug |= DEBUG_DIR; 218 break; 219 case 'e': 220 debug |= DEBUG_ERROR; 221 break; 222 case 'f': 223 debug |= DEBUG_FOR; 224 break; 225 case 'g': 226 if (modules[1] == '1') { 227 debug |= DEBUG_GRAPH1; 228 ++modules; 229 } 230 else if (modules[1] == '2') { 231 debug |= DEBUG_GRAPH2; 232 ++modules; 233 } 234 else if (modules[1] == '3') { 235 debug |= DEBUG_GRAPH3; 236 ++modules; 237 } 238 break; 239 case 'j': 240 debug |= DEBUG_JOB; 241 break; 242 case 'l': 243 debug |= DEBUG_LOUD; 244 break; 245 case 'm': 246 debug |= DEBUG_MAKE; 247 break; 248 case 'n': 249 debug |= DEBUG_SCRIPT; 250 break; 251 case 'p': 252 debug |= DEBUG_PARSE; 253 break; 254 case 's': 255 debug |= DEBUG_SUFF; 256 break; 257 case 't': 258 debug |= DEBUG_TARG; 259 break; 260 case 'v': 261 debug |= DEBUG_VAR; 262 break; 263 case 'x': 264 debug |= DEBUG_SHELL; 265 break; 266 case 'F': 267 if (debug_file != stdout && debug_file != stderr) 268 fclose(debug_file); 269 if (*++modules == '+') 270 mode = "a"; 271 else 272 mode = "w"; 273 if (strcmp(modules, "stdout") == 0) { 274 debug_file = stdout; 275 goto debug_setbuf; 276 } 277 if (strcmp(modules, "stderr") == 0) { 278 debug_file = stderr; 279 goto debug_setbuf; 280 } 281 len = strlen(modules); 282 fname = malloc(len + 20); 283 memcpy(fname, modules, len + 1); 284 /* Let the filename be modified by the pid */ 285 if (strcmp(fname + len - 3, ".%d") == 0) 286 snprintf(fname + len - 2, 20, "%d", getpid()); 287 debug_file = fopen(fname, mode); 288 if (!debug_file) { 289 fprintf(stderr, "Cannot open debug file %s\n", 290 fname); 291 usage(); 292 } 293 free(fname); 294 goto debug_setbuf; 295 default: 296 (void)fprintf(stderr, 297 "%s: illegal argument to d option -- %c\n", 298 progname, *modules); 299 usage(); 300 } 301 } 302 debug_setbuf: 303 /* 304 * Make the debug_file unbuffered, and make 305 * stdout line buffered (unless debugfile == stdout). 306 */ 307 setvbuf(debug_file, NULL, _IONBF, 0); 308 if (debug_file != stdout) { 309 setvbuf(stdout, NULL, _IOLBF, 0); 310 } 311 } 312 313 /*- 314 * MainParseArgs -- 315 * Parse a given argument vector. Called from main() and from 316 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 317 * 318 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 319 * 320 * Results: 321 * None 322 * 323 * Side Effects: 324 * Various global and local flags will be set depending on the flags 325 * given 326 */ 327 static void 328 MainParseArgs(int argc, char **argv) 329 { 330 char *p; 331 int c = '?'; 332 int arginc; 333 char *argvalue; 334 const char *getopt_def; 335 char *optscan; 336 Boolean inOption, dashDash = FALSE; 337 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 338 339 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst" 340 /* Can't actually use getopt(3) because rescanning is not portable */ 341 342 getopt_def = OPTFLAGS; 343 rearg: 344 inOption = FALSE; 345 optscan = NULL; 346 while(argc > 1) { 347 char *getopt_spec; 348 if(!inOption) 349 optscan = argv[1]; 350 c = *optscan++; 351 arginc = 0; 352 if(inOption) { 353 if(c == '\0') { 354 ++argv; 355 --argc; 356 inOption = FALSE; 357 continue; 358 } 359 } else { 360 if (c != '-' || dashDash) 361 break; 362 inOption = TRUE; 363 c = *optscan++; 364 } 365 /* '-' found at some earlier point */ 366 getopt_spec = strchr(getopt_def, c); 367 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 368 /* -<something> found, and <something> should have an arg */ 369 inOption = FALSE; 370 arginc = 1; 371 argvalue = optscan; 372 if(*argvalue == '\0') { 373 if (argc < 3) 374 goto noarg; 375 argvalue = argv[2]; 376 arginc = 2; 377 } 378 } else { 379 argvalue = NULL; 380 } 381 switch(c) { 382 case '\0': 383 arginc = 1; 384 inOption = FALSE; 385 break; 386 case 'B': 387 compatMake = TRUE; 388 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 389 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 390 break; 391 case 'C': 392 if (chdir(argvalue) == -1) { 393 (void)fprintf(stderr, 394 "%s: chdir %s: %s\n", 395 progname, argvalue, 396 strerror(errno)); 397 exit(1); 398 } 399 if (getcwd(curdir, MAXPATHLEN) == NULL) { 400 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 401 exit(2); 402 } 403 ignorePWD = TRUE; 404 break; 405 case 'D': 406 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 407 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 408 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 409 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 410 break; 411 case 'I': 412 if (argvalue == NULL) goto noarg; 413 Parse_AddIncludeDir(argvalue); 414 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 415 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 416 break; 417 case 'J': 418 if (argvalue == NULL) goto noarg; 419 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 420 (void)fprintf(stderr, 421 "%s: internal error -- J option malformed (%s)\n", 422 progname, argvalue); 423 usage(); 424 } 425 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 426 (fcntl(jp_1, F_GETFD, 0) < 0)) { 427 #if 0 428 (void)fprintf(stderr, 429 "%s: ###### warning -- J descriptors were closed!\n", 430 progname); 431 exit(2); 432 #endif 433 jp_0 = -1; 434 jp_1 = -1; 435 compatMake = TRUE; 436 } else { 437 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 438 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 439 jobServer = TRUE; 440 } 441 break; 442 case 'N': 443 noExecute = TRUE; 444 noRecursiveExecute = TRUE; 445 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 446 break; 447 case 'S': 448 keepgoing = FALSE; 449 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 450 break; 451 case 'T': 452 if (argvalue == NULL) goto noarg; 453 tracefile = bmake_strdup(argvalue); 454 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 455 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 456 break; 457 case 'V': 458 if (argvalue == NULL) goto noarg; 459 printVars = TRUE; 460 (void)Lst_AtEnd(variables, argvalue); 461 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 462 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 463 break; 464 case 'W': 465 parseWarnFatal = TRUE; 466 break; 467 case 'X': 468 varNoExportEnv = TRUE; 469 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 470 break; 471 case 'd': 472 if (argvalue == NULL) goto noarg; 473 /* If '-d-opts' don't pass to children */ 474 if (argvalue[0] == '-') 475 argvalue++; 476 else { 477 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 478 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 479 } 480 parse_debug_options(argvalue); 481 break; 482 case 'e': 483 checkEnvFirst = TRUE; 484 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 485 break; 486 case 'f': 487 if (argvalue == NULL) goto noarg; 488 (void)Lst_AtEnd(makefiles, argvalue); 489 break; 490 case 'i': 491 ignoreErrors = TRUE; 492 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 493 break; 494 case 'j': 495 if (argvalue == NULL) goto noarg; 496 forceJobs = TRUE; 497 maxJobs = strtol(argvalue, &p, 0); 498 if (*p != '\0' || maxJobs < 1) { 499 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 500 progname); 501 exit(1); 502 } 503 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 504 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 505 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 506 maxJobTokens = maxJobs; 507 break; 508 case 'k': 509 keepgoing = TRUE; 510 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 511 break; 512 case 'm': 513 if (argvalue == NULL) goto noarg; 514 /* look for magic parent directory search string */ 515 if (strncmp(".../", argvalue, 4) == 0) { 516 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 517 found_path, sizeof(found_path))) 518 break; /* nothing doing */ 519 (void)Dir_AddDir(sysIncPath, found_path); 520 } else { 521 (void)Dir_AddDir(sysIncPath, argvalue); 522 } 523 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 524 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 525 break; 526 case 'n': 527 noExecute = TRUE; 528 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 529 break; 530 case 'q': 531 queryFlag = TRUE; 532 /* Kind of nonsensical, wot? */ 533 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 534 break; 535 case 'r': 536 noBuiltins = TRUE; 537 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 538 break; 539 case 's': 540 beSilent = TRUE; 541 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 542 break; 543 case 't': 544 touchFlag = TRUE; 545 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 546 break; 547 case '-': 548 dashDash = TRUE; 549 break; 550 default: 551 case '?': 552 usage(); 553 } 554 argv += arginc; 555 argc -= arginc; 556 } 557 558 oldVars = TRUE; 559 560 /* 561 * See if the rest of the arguments are variable assignments and 562 * perform them if so. Else take them to be targets and stuff them 563 * on the end of the "create" list. 564 */ 565 for (; argc > 1; ++argv, --argc) 566 if (Parse_IsVar(argv[1])) { 567 Parse_DoVar(argv[1], VAR_CMD); 568 } else { 569 if (!*argv[1]) 570 Punt("illegal (null) argument."); 571 if (*argv[1] == '-' && !dashDash) 572 goto rearg; 573 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 574 } 575 576 return; 577 noarg: 578 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 579 progname, c); 580 usage(); 581 } 582 583 /*- 584 * Main_ParseArgLine -- 585 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 586 * is encountered and by main() when reading the .MAKEFLAGS envariable. 587 * Takes a line of arguments and breaks it into its 588 * component words and passes those words and the number of them to the 589 * MainParseArgs function. 590 * The line should have all its leading whitespace removed. 591 * 592 * Input: 593 * line Line to fracture 594 * 595 * Results: 596 * None 597 * 598 * Side Effects: 599 * Only those that come from the various arguments. 600 */ 601 void 602 Main_ParseArgLine(const char *line) 603 { 604 char **argv; /* Manufactured argument vector */ 605 int argc; /* Number of arguments in argv */ 606 char *args; /* Space used by the args */ 607 char *buf, *p1; 608 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 609 size_t len; 610 611 if (line == NULL) 612 return; 613 for (; *line == ' '; ++line) 614 continue; 615 if (!*line) 616 return; 617 618 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 619 (void)snprintf(buf, len, "%s %s", argv0, line); 620 if (p1) 621 free(p1); 622 623 argv = brk_string(buf, &argc, TRUE, &args); 624 if (argv == NULL) { 625 Error("Unterminated quoted string [%s]", buf); 626 free(buf); 627 return; 628 } 629 free(buf); 630 MainParseArgs(argc, argv); 631 632 free(args); 633 free(argv); 634 } 635 636 Boolean 637 Main_SetObjdir(const char *path) 638 { 639 struct stat sb; 640 char *p = NULL; 641 char buf[MAXPATHLEN + 1]; 642 Boolean rc = FALSE; 643 644 /* expand variable substitutions */ 645 if (strchr(path, '$') != 0) { 646 snprintf(buf, MAXPATHLEN, "%s", path); 647 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0); 648 } 649 650 if (path[0] != '/') { 651 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 652 path = buf; 653 } 654 655 /* look for the directory and try to chdir there */ 656 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 657 if (chdir(path)) { 658 (void)fprintf(stderr, "make warning: %s: %s.\n", 659 path, strerror(errno)); 660 } else { 661 strncpy(objdir, path, MAXPATHLEN); 662 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 663 setenv("PWD", objdir, 1); 664 Dir_InitDot(); 665 rc = TRUE; 666 } 667 } 668 669 if (p) 670 free(p); 671 return rc; 672 } 673 674 /*- 675 * ReadAllMakefiles -- 676 * wrapper around ReadMakefile() to read all. 677 * 678 * Results: 679 * TRUE if ok, FALSE on error 680 */ 681 static int 682 ReadAllMakefiles(const void *p, const void *q) 683 { 684 return (ReadMakefile(p, q) == 0); 685 } 686 687 static int 688 str2Lst_Append(Lst lp, char *str, const char *sep) 689 { 690 char *cp; 691 int n; 692 693 if (!sep) 694 sep = " \t"; 695 696 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 697 (void)Lst_AtEnd(lp, cp); 698 n++; 699 } 700 return (n); 701 } 702 703 #ifdef SIGINFO 704 /*ARGSUSED*/ 705 static void 706 siginfo(int signo) 707 { 708 char dir[MAXPATHLEN]; 709 char str[2 * MAXPATHLEN]; 710 int len; 711 if (getcwd(dir, sizeof(dir)) == NULL) 712 return; 713 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 714 if (len > 0) 715 (void)write(STDERR_FILENO, str, (size_t)len); 716 } 717 #endif 718 719 /* 720 * Allow makefiles some control over the mode we run in. 721 */ 722 void 723 MakeMode(const char *mode) 724 { 725 char *mp = NULL; 726 727 if (!mode) 728 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0); 729 730 if (mode && *mode) { 731 if (strstr(mode, "compat")) { 732 compatMake = TRUE; 733 forceJobs = FALSE; 734 } 735 } 736 if (mp) 737 free(mp); 738 } 739 740 /*- 741 * main -- 742 * The main function, for obvious reasons. Initializes variables 743 * and a few modules, then parses the arguments give it in the 744 * environment and on the command line. Reads the system makefile 745 * followed by either Makefile, makefile or the file given by the 746 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 747 * flags it has received by then uses either the Make or the Compat 748 * module to create the initial list of targets. 749 * 750 * Results: 751 * If -q was given, exits -1 if anything was out-of-date. Else it exits 752 * 0. 753 * 754 * Side Effects: 755 * The program exits when done. Targets are created. etc. etc. etc. 756 */ 757 int 758 main(int argc, char **argv) 759 { 760 Lst targs; /* target nodes to create -- passed to Make_Init */ 761 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 762 struct stat sb, sa; 763 char *p1, *path, *pwd; 764 char mdpath[MAXPATHLEN]; 765 char *machine = getenv("MACHINE"); 766 const char *machine_arch = getenv("MACHINE_ARCH"); 767 char *syspath = getenv("MAKESYSPATH"); 768 Lst sysMkPath; /* Path of sys.mk */ 769 char *cp = NULL, *start; 770 /* avoid faults on read-only strings */ 771 static char defsyspath[] = _PATH_DEFSYSPATH; 772 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 773 struct timeval rightnow; /* to initialize random seed */ 774 #ifdef MAKE_NATIVE 775 struct utsname utsname; 776 #endif 777 778 /* default to writing debug to stderr */ 779 debug_file = stderr; 780 781 #ifdef SIGINFO 782 (void)signal(SIGINFO, siginfo); 783 #endif 784 /* 785 * Set the seed to produce a different random sequence 786 * on each program execution. 787 */ 788 gettimeofday(&rightnow, NULL); 789 srandom(rightnow.tv_sec + rightnow.tv_usec); 790 791 if ((progname = strrchr(argv[0], '/')) != NULL) 792 progname++; 793 else 794 progname = argv[0]; 795 #ifdef RLIMIT_NOFILE 796 /* 797 * get rid of resource limit on file descriptors 798 */ 799 { 800 struct rlimit rl; 801 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 802 rl.rlim_cur != rl.rlim_max) { 803 rl.rlim_cur = rl.rlim_max; 804 (void)setrlimit(RLIMIT_NOFILE, &rl); 805 } 806 } 807 #endif 808 809 /* 810 * Get the name of this type of MACHINE from utsname 811 * so we can share an executable for similar machines. 812 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 813 * 814 * Note that both MACHINE and MACHINE_ARCH are decided at 815 * run-time. 816 */ 817 if (!machine) { 818 #ifdef MAKE_NATIVE 819 if (uname(&utsname) == -1) { 820 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 821 strerror(errno)); 822 exit(2); 823 } 824 machine = utsname.machine; 825 #else 826 #ifdef MAKE_MACHINE 827 machine = MAKE_MACHINE; 828 #else 829 machine = "unknown"; 830 #endif 831 #endif 832 } 833 834 if (!machine_arch) { 835 #ifndef MACHINE_ARCH 836 #ifdef MAKE_MACHINE_ARCH 837 machine_arch = MAKE_MACHINE_ARCH; 838 #else 839 machine_arch = "unknown"; 840 #endif 841 #else 842 machine_arch = MACHINE_ARCH; 843 #endif 844 } 845 846 myPid = getpid(); /* remember this for vFork() */ 847 848 /* 849 * Just in case MAKEOBJDIR wants us to do something tricky. 850 */ 851 Var_Init(); /* Initialize the lists of variables for 852 * parsing arguments */ 853 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 854 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 855 #ifdef MAKE_VERSION 856 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 857 #endif 858 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 859 /* 860 * This is the traditional preference for makefiles. 861 */ 862 #ifndef MAKEFILE_PREFERENCE_LIST 863 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 864 #endif 865 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 866 VAR_GLOBAL, 0); 867 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 868 869 create = Lst_Init(FALSE); 870 makefiles = Lst_Init(FALSE); 871 printVars = FALSE; 872 variables = Lst_Init(FALSE); 873 beSilent = FALSE; /* Print commands as executed */ 874 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 875 noExecute = FALSE; /* Execute all commands */ 876 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 877 keepgoing = FALSE; /* Stop on error */ 878 allPrecious = FALSE; /* Remove targets when interrupted */ 879 queryFlag = FALSE; /* This is not just a check-run */ 880 noBuiltins = FALSE; /* Read the built-in rules */ 881 touchFlag = FALSE; /* Actually update targets */ 882 debug = 0; /* No debug verbosity, please. */ 883 jobsRunning = FALSE; 884 885 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 886 maxJobTokens = maxJobs; 887 compatMake = FALSE; /* No compat mode */ 888 ignorePWD = FALSE; 889 890 /* 891 * Initialize the parsing, directory and variable modules to prepare 892 * for the reading of inclusion paths and variable settings on the 893 * command line 894 */ 895 896 /* 897 * Initialize various variables. 898 * MAKE also gets this name, for compatibility 899 * .MAKEFLAGS gets set to the empty string just in case. 900 * MFLAGS also gets initialized empty, for compatibility. 901 */ 902 Parse_Init(); 903 p1 = argv[0]; 904 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 905 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 906 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 907 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 908 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 909 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 910 911 /* 912 * Set some other useful macros 913 */ 914 { 915 char tmp[64]; 916 const char *ep; 917 918 if (!(ep = getenv(MAKE_LEVEL))) { 919 ep = "0"; 920 } 921 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0); 922 snprintf(tmp, sizeof(tmp), "%u", myPid); 923 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 924 snprintf(tmp, sizeof(tmp), "%u", getppid()); 925 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 926 } 927 Job_SetPrefix(); 928 929 /* 930 * First snag any flags out of the MAKE environment variable. 931 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 932 * in a different format). 933 */ 934 #ifdef POSIX 935 Main_ParseArgLine(getenv("MAKEFLAGS")); 936 #else 937 Main_ParseArgLine(getenv("MAKE")); 938 #endif 939 940 /* 941 * Find where we are (now). 942 * We take care of PWD for the automounter below... 943 */ 944 if (getcwd(curdir, MAXPATHLEN) == NULL) { 945 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 946 exit(2); 947 } 948 949 MainParseArgs(argc, argv); 950 951 /* 952 * Verify that cwd is sane. 953 */ 954 if (stat(curdir, &sa) == -1) { 955 (void)fprintf(stderr, "%s: %s: %s.\n", 956 progname, curdir, strerror(errno)); 957 exit(2); 958 } 959 960 /* 961 * All this code is so that we know where we are when we start up 962 * on a different machine with pmake. 963 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 964 * since the value of curdir can vary depending on how we got 965 * here. Ie sitting at a shell prompt (shell that provides $PWD) 966 * or via subdir.mk in which case its likely a shell which does 967 * not provide it. 968 * So, to stop it breaking this case only, we ignore PWD if 969 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 970 */ 971 if (!ignorePWD && 972 (pwd = getenv("PWD")) != NULL && 973 getenv("MAKEOBJDIRPREFIX") == NULL) { 974 const char *makeobjdir = getenv("MAKEOBJDIR"); 975 976 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 977 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 978 sa.st_dev == sb.st_dev) 979 (void)strncpy(curdir, pwd, MAXPATHLEN); 980 } 981 } 982 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 983 984 /* 985 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 986 * MAKEOBJDIR is set in the environment, try only that value 987 * and fall back to .CURDIR if it does not exist. 988 * 989 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and 990 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 991 * of these paths exist, just use .CURDIR. 992 */ 993 Dir_Init(curdir); 994 (void)Main_SetObjdir(curdir); 995 996 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) { 997 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir); 998 (void)Main_SetObjdir(mdpath); 999 } else if ((path = getenv("MAKEOBJDIR")) != NULL) { 1000 (void)Main_SetObjdir(path); 1001 } else { 1002 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine); 1003 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) { 1004 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", 1005 _PATH_OBJDIRPREFIX, curdir); 1006 (void)Main_SetObjdir(mdpath); 1007 } 1008 } 1009 1010 /* 1011 * Be compatible if user did not specify -j and did not explicitly 1012 * turned compatibility on 1013 */ 1014 if (!compatMake && !forceJobs) { 1015 compatMake = TRUE; 1016 } 1017 1018 /* 1019 * Initialize archive, target and suffix modules in preparation for 1020 * parsing the makefile(s) 1021 */ 1022 Arch_Init(); 1023 Targ_Init(); 1024 Suff_Init(); 1025 Trace_Init(tracefile); 1026 1027 DEFAULT = NULL; 1028 (void)time(&now); 1029 1030 Trace_Log(MAKESTART, NULL); 1031 1032 /* 1033 * Set up the .TARGETS variable to contain the list of targets to be 1034 * created. If none specified, make the variable empty -- the parser 1035 * will fill the thing in with the default or .MAIN target. 1036 */ 1037 if (!Lst_IsEmpty(create)) { 1038 LstNode ln; 1039 1040 for (ln = Lst_First(create); ln != NULL; 1041 ln = Lst_Succ(ln)) { 1042 char *name = (char *)Lst_Datum(ln); 1043 1044 Var_Append(".TARGETS", name, VAR_GLOBAL); 1045 } 1046 } else 1047 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1048 1049 1050 /* 1051 * If no user-supplied system path was given (through the -m option) 1052 * add the directories from the DEFSYSPATH (more than one may be given 1053 * as dir1:...:dirn) to the system include path. 1054 */ 1055 if (syspath == NULL || *syspath == '\0') 1056 syspath = defsyspath; 1057 else 1058 syspath = bmake_strdup(syspath); 1059 1060 for (start = syspath; *start != '\0'; start = cp) { 1061 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1062 continue; 1063 if (*cp == ':') { 1064 *cp++ = '\0'; 1065 } 1066 /* look for magic parent directory search string */ 1067 if (strncmp(".../", start, 4) != 0) { 1068 (void)Dir_AddDir(defIncPath, start); 1069 } else { 1070 if (Dir_FindHereOrAbove(curdir, start+4, 1071 found_path, sizeof(found_path))) { 1072 (void)Dir_AddDir(defIncPath, found_path); 1073 } 1074 } 1075 } 1076 if (syspath != defsyspath) 1077 free(syspath); 1078 1079 /* 1080 * Read in the built-in rules first, followed by the specified 1081 * makefile, if it was (makefile != NULL), or the default 1082 * makefile and Makefile, in that order, if it wasn't. 1083 */ 1084 if (!noBuiltins) { 1085 LstNode ln; 1086 1087 sysMkPath = Lst_Init(FALSE); 1088 Dir_Expand(_PATH_DEFSYSMK, 1089 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1090 sysMkPath); 1091 if (Lst_IsEmpty(sysMkPath)) 1092 Fatal("%s: no system rules (%s).", progname, 1093 _PATH_DEFSYSMK); 1094 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1095 if (ln == NULL) 1096 Fatal("%s: cannot open %s.", progname, 1097 (char *)Lst_Datum(ln)); 1098 } 1099 1100 if (!Lst_IsEmpty(makefiles)) { 1101 LstNode ln; 1102 1103 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1104 if (ln != NULL) 1105 Fatal("%s: cannot open %s.", progname, 1106 (char *)Lst_Datum(ln)); 1107 } else { 1108 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1109 VAR_CMD, 0); 1110 if (p1) { 1111 (void)str2Lst_Append(makefiles, p1, NULL); 1112 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1113 free(p1); 1114 } 1115 } 1116 1117 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1118 if (!noBuiltins || !printVars) { 1119 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1120 VAR_CMD, 0); 1121 doing_depend = TRUE; 1122 (void)ReadMakefile(makeDependfile, NULL); 1123 doing_depend = FALSE; 1124 } 1125 1126 MakeMode(NULL); 1127 1128 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1129 if (p1) 1130 free(p1); 1131 1132 if (!compatMake) 1133 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1134 if (DEBUG(JOB)) 1135 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1136 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1137 1138 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1139 1140 Check_Cwd_av(0, NULL, 0); /* initialize it */ 1141 1142 1143 /* 1144 * For compatibility, look at the directories in the VPATH variable 1145 * and add them to the search path, if the variable is defined. The 1146 * variable's value is in the same format as the PATH envariable, i.e. 1147 * <directory>:<directory>:<directory>... 1148 */ 1149 if (Var_Exists("VPATH", VAR_CMD)) { 1150 char *vpath, savec; 1151 /* 1152 * GCC stores string constants in read-only memory, but 1153 * Var_Subst will want to write this thing, so store it 1154 * in an array 1155 */ 1156 static char VPATH[] = "${VPATH}"; 1157 1158 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 1159 path = vpath; 1160 do { 1161 /* skip to end of directory */ 1162 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1163 continue; 1164 /* Save terminator character so know when to stop */ 1165 savec = *cp; 1166 *cp = '\0'; 1167 /* Add directory to search path */ 1168 (void)Dir_AddDir(dirSearchPath, path); 1169 *cp = savec; 1170 path = cp + 1; 1171 } while (savec == ':'); 1172 free(vpath); 1173 } 1174 1175 /* 1176 * Now that all search paths have been read for suffixes et al, it's 1177 * time to add the default search path to their lists... 1178 */ 1179 Suff_DoPaths(); 1180 1181 /* 1182 * Propagate attributes through :: dependency lists. 1183 */ 1184 Targ_Propagate(); 1185 1186 /* print the initial graph, if the user requested it */ 1187 if (DEBUG(GRAPH1)) 1188 Targ_PrintGraph(1); 1189 1190 /* print the values of any variables requested by the user */ 1191 if (printVars) { 1192 LstNode ln; 1193 1194 for (ln = Lst_First(variables); ln != NULL; 1195 ln = Lst_Succ(ln)) { 1196 char *var = (char *)Lst_Datum(ln); 1197 char *value; 1198 1199 if (strchr(var, '$')) { 1200 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0); 1201 } else { 1202 value = Var_Value(var, VAR_GLOBAL, &p1); 1203 } 1204 printf("%s\n", value ? value : ""); 1205 if (p1) 1206 free(p1); 1207 } 1208 } else { 1209 /* 1210 * Have now read the entire graph and need to make a list of 1211 * targets to create. If none was given on the command line, 1212 * we consult the parsing module to find the main target(s) 1213 * to create. 1214 */ 1215 if (Lst_IsEmpty(create)) 1216 targs = Parse_MainName(); 1217 else 1218 targs = Targ_FindList(create, TARG_CREATE); 1219 1220 if (!compatMake) { 1221 /* 1222 * Initialize job module before traversing the graph 1223 * now that any .BEGIN and .END targets have been read. 1224 * This is done only if the -q flag wasn't given 1225 * (to prevent the .BEGIN from being executed should 1226 * it exist). 1227 */ 1228 if (!queryFlag) { 1229 Job_Init(); 1230 jobsRunning = TRUE; 1231 } 1232 1233 /* Traverse the graph, checking on all the targets */ 1234 outOfDate = Make_Run(targs); 1235 } else { 1236 /* 1237 * Compat_Init will take care of creating all the 1238 * targets as well as initializing the module. 1239 */ 1240 Compat_Run(targs); 1241 } 1242 } 1243 1244 #ifdef CLEANUP 1245 Lst_Destroy(targs, NULL); 1246 Lst_Destroy(variables, NULL); 1247 Lst_Destroy(makefiles, NULL); 1248 Lst_Destroy(create, (FreeProc *)free); 1249 #endif 1250 1251 /* print the graph now it's been processed if the user requested it */ 1252 if (DEBUG(GRAPH2)) 1253 Targ_PrintGraph(2); 1254 1255 Trace_Log(MAKEEND, 0); 1256 1257 Suff_End(); 1258 Targ_End(); 1259 Arch_End(); 1260 Var_End(); 1261 Parse_End(); 1262 Dir_End(); 1263 Job_End(); 1264 Trace_End(); 1265 1266 return outOfDate ? 1 : 0; 1267 } 1268 1269 /*- 1270 * ReadMakefile -- 1271 * Open and parse the given makefile. 1272 * 1273 * Results: 1274 * 0 if ok. -1 if couldn't open file. 1275 * 1276 * Side Effects: 1277 * lots 1278 */ 1279 static int 1280 ReadMakefile(const void *p, const void *q __unused) 1281 { 1282 const char *fname = p; /* makefile to read */ 1283 int fd; 1284 size_t len = MAXPATHLEN; 1285 char *name, *path = bmake_malloc(len); 1286 1287 if (!strcmp(fname, "-")) { 1288 Parse_File("(stdin)", dup(fileno(stdin))); 1289 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); 1290 } else { 1291 /* if we've chdir'd, rebuild the path name */ 1292 if (strcmp(curdir, objdir) && *fname != '/') { 1293 size_t plen = strlen(curdir) + strlen(fname) + 2; 1294 if (len < plen) 1295 path = bmake_realloc(path, len = 2 * plen); 1296 1297 (void)snprintf(path, len, "%s/%s", curdir, fname); 1298 fd = open(path, O_RDONLY); 1299 if (fd != -1) { 1300 fname = path; 1301 goto found; 1302 } 1303 1304 /* If curdir failed, try objdir (ala .depend) */ 1305 plen = strlen(objdir) + strlen(fname) + 2; 1306 if (len < plen) 1307 path = bmake_realloc(path, len = 2 * plen); 1308 (void)snprintf(path, len, "%s/%s", objdir, fname); 1309 fd = open(path, O_RDONLY); 1310 if (fd != -1) { 1311 fname = path; 1312 goto found; 1313 } 1314 } else { 1315 fd = open(fname, O_RDONLY); 1316 if (fd != -1) 1317 goto found; 1318 } 1319 /* look in -I and system include directories. */ 1320 name = Dir_FindFile(fname, parseIncPath); 1321 if (!name) 1322 name = Dir_FindFile(fname, 1323 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1324 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1325 if (name) 1326 free(name); 1327 free(path); 1328 return(-1); 1329 } 1330 fname = name; 1331 /* 1332 * set the MAKEFILE variable desired by System V fans -- the 1333 * placement of the setting here means it gets set to the last 1334 * makefile specified, as it is set by SysV make. 1335 */ 1336 found: 1337 if (!doing_depend) 1338 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); 1339 Parse_File(fname, fd); 1340 } 1341 free(path); 1342 return(0); 1343 } 1344 1345 1346 /* 1347 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR 1348 * in situations that would not arrise with ./obj (links or not). 1349 * This tends to break things like: 1350 * 1351 * build: 1352 * ${MAKE} includes 1353 * 1354 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as 1355 * opposed to an argument) in a command line and if so returns 1356 * ${.CURDIR} so caller can chdir() so that the assumptions made by 1357 * the Makefile hold true. 1358 * 1359 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. 1360 * 1361 * The chdir() only happens in the child process, and does nothing if 1362 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it 1363 * should not break anything. Also if NOCHECKMAKECHDIR is set we 1364 * do nothing - to ensure historic semantics can be retained. 1365 */ 1366 static int Check_Cwd_Off = 0; 1367 1368 static char * 1369 Check_Cwd_av(int ac, char **av, int copy) 1370 { 1371 static char *make[4]; 1372 static char *cur_dir = NULL; 1373 char **mp; 1374 char *cp; 1375 int is_cmd, next_cmd; 1376 int i; 1377 int n; 1378 1379 if (Check_Cwd_Off) { 1380 if (DEBUG(CWD)) 1381 fprintf(debug_file, "check_cwd: check is off.\n"); 1382 return NULL; 1383 } 1384 1385 if (make[0] == NULL) { 1386 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { 1387 Check_Cwd_Off = 1; 1388 if (DEBUG(CWD)) 1389 fprintf(debug_file, "check_cwd: turning check off.\n"); 1390 return NULL; 1391 } 1392 1393 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); 1394 if ((make[0] = strrchr(make[1], '/')) == NULL) { 1395 make[0] = make[1]; 1396 make[1] = NULL; 1397 } else 1398 ++make[0]; 1399 make[2] = NULL; 1400 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 1401 } 1402 if (ac == 0 || av == NULL) { 1403 if (DEBUG(CWD)) 1404 fprintf(debug_file, "check_cwd: empty command.\n"); 1405 return NULL; /* initialization only */ 1406 } 1407 1408 if (getenv("MAKEOBJDIR") == NULL && 1409 getenv("MAKEOBJDIRPREFIX") == NULL) { 1410 if (DEBUG(CWD)) 1411 fprintf(debug_file, "check_cwd: no obj dirs.\n"); 1412 return NULL; 1413 } 1414 1415 1416 next_cmd = 1; 1417 for (i = 0; i < ac; ++i) { 1418 is_cmd = next_cmd; 1419 1420 n = strlen(av[i]); 1421 cp = &(av[i])[n - 1]; 1422 if (strspn(av[i], "|&;") == (size_t)n) { 1423 next_cmd = 1; 1424 continue; 1425 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { 1426 next_cmd = 1; 1427 if (copy) { 1428 do { 1429 *cp-- = '\0'; 1430 } while (*cp == ';' || *cp == '&' || *cp == '|' || 1431 *cp == ')' || *cp == '}') ; 1432 } else { 1433 /* 1434 * XXX this should not happen. 1435 */ 1436 fprintf(stderr, "%s: WARNING: raw arg ends in shell meta '%s'\n", 1437 progname, av[i]); 1438 } 1439 } else 1440 next_cmd = 0; 1441 1442 cp = av[i]; 1443 if (*cp == ';' || *cp == '&' || *cp == '|') 1444 is_cmd = 1; 1445 1446 if (DEBUG(CWD)) 1447 fprintf(debug_file, "av[%d] == %s '%s'", 1448 i, (is_cmd) ? "cmd" : "arg", av[i]); 1449 if (is_cmd != 0) { 1450 if (*cp == '(' || *cp == '{' || 1451 *cp == ';' || *cp == '&' || *cp == '|') { 1452 do { 1453 ++cp; 1454 } while (*cp == '(' || *cp == '{' || 1455 *cp == ';' || *cp == '&' || *cp == '|'); 1456 if (*cp == '\0') { 1457 next_cmd = 1; 1458 continue; 1459 } 1460 } 1461 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { 1462 if (DEBUG(CWD)) 1463 fprintf(debug_file, " == cd, done.\n"); 1464 return NULL; 1465 } 1466 for (mp = make; *mp != NULL; ++mp) { 1467 n = strlen(*mp); 1468 if (strcmp(cp, *mp) == 0) { 1469 if (DEBUG(CWD)) 1470 fprintf(debug_file, " %s == '%s', chdir(%s)\n", 1471 cp, *mp, cur_dir); 1472 return cur_dir; 1473 } 1474 } 1475 } 1476 if (DEBUG(CWD)) 1477 fprintf(debug_file, "\n"); 1478 } 1479 return NULL; 1480 } 1481 1482 char * 1483 Check_Cwd_Cmd(const char *cmd) 1484 { 1485 char *cp, *bp; 1486 char **av; 1487 int ac; 1488 1489 if (Check_Cwd_Off) 1490 return NULL; 1491 1492 if (cmd) { 1493 av = brk_string(cmd, &ac, TRUE, &bp); 1494 if (DEBUG(CWD)) 1495 fprintf(debug_file, "splitting: '%s' -> %d words\n", 1496 cmd, ac); 1497 } else { 1498 ac = 0; 1499 av = NULL; 1500 bp = NULL; 1501 } 1502 cp = Check_Cwd_av(ac, av, 1); 1503 if (bp) 1504 free(bp); 1505 if (av) 1506 free(av); 1507 return cp; 1508 } 1509 1510 void 1511 Check_Cwd(const char **argv) 1512 { 1513 char *cp; 1514 int ac; 1515 1516 if (Check_Cwd_Off) 1517 return; 1518 1519 for (ac = 0; argv[ac] != NULL; ++ac) 1520 /* NOTHING */; 1521 if (ac == 3 && *argv[1] == '-') { 1522 cp = Check_Cwd_Cmd(argv[2]); 1523 } else { 1524 cp = Check_Cwd_av(ac, UNCONST(argv), 0); 1525 } 1526 if (cp) { 1527 chdir(cp); 1528 } 1529 } 1530 1531 /*- 1532 * Cmd_Exec -- 1533 * Execute the command in cmd, and return the output of that command 1534 * in a string. 1535 * 1536 * Results: 1537 * A string containing the output of the command, or the empty string 1538 * If errnum is not NULL, it contains the reason for the command failure 1539 * 1540 * Side Effects: 1541 * The string must be freed by the caller. 1542 */ 1543 char * 1544 Cmd_Exec(const char *cmd, const char **errnum) 1545 { 1546 const char *args[4]; /* Args for invoking the shell */ 1547 int fds[2]; /* Pipe streams */ 1548 int cpid; /* Child PID */ 1549 int pid; /* PID from wait() */ 1550 char *res; /* result */ 1551 int status; /* command exit status */ 1552 Buffer buf; /* buffer to store the result */ 1553 char *cp; 1554 int cc; 1555 1556 1557 *errnum = NULL; 1558 1559 if (!shellName) 1560 Shell_Init(); 1561 /* 1562 * Set up arguments for shell 1563 */ 1564 args[0] = shellName; 1565 args[1] = "-c"; 1566 args[2] = cmd; 1567 args[3] = NULL; 1568 1569 /* 1570 * Open a pipe for fetching its output 1571 */ 1572 if (pipe(fds) == -1) { 1573 *errnum = "Couldn't create pipe for \"%s\""; 1574 goto bad; 1575 } 1576 1577 /* 1578 * Fork 1579 */ 1580 switch (cpid = vFork()) { 1581 case 0: 1582 /* 1583 * Close input side of pipe 1584 */ 1585 (void)close(fds[0]); 1586 1587 /* 1588 * Duplicate the output stream to the shell's output, then 1589 * shut the extra thing down. Note we don't fetch the error 1590 * stream...why not? Why? 1591 */ 1592 (void)dup2(fds[1], 1); 1593 (void)close(fds[1]); 1594 1595 Var_ExportVars(); 1596 1597 (void)execv(shellPath, UNCONST(args)); 1598 _exit(1); 1599 /*NOTREACHED*/ 1600 1601 case -1: 1602 *errnum = "Couldn't exec \"%s\""; 1603 goto bad; 1604 1605 default: 1606 /* 1607 * No need for the writing half 1608 */ 1609 (void)close(fds[1]); 1610 1611 Buf_Init(&buf, 0); 1612 1613 do { 1614 char result[BUFSIZ]; 1615 cc = read(fds[0], result, sizeof(result)); 1616 if (cc > 0) 1617 Buf_AddBytes(&buf, cc, result); 1618 } 1619 while (cc > 0 || (cc == -1 && errno == EINTR)); 1620 1621 /* 1622 * Close the input side of the pipe. 1623 */ 1624 (void)close(fds[0]); 1625 1626 /* 1627 * Wait for the process to exit. 1628 */ 1629 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) 1630 continue; 1631 1632 cc = Buf_Size(&buf); 1633 res = Buf_Destroy(&buf, FALSE); 1634 1635 if (cc == 0) 1636 *errnum = "Couldn't read shell's output for \"%s\""; 1637 1638 if (WIFSIGNALED(status)) 1639 *errnum = "\"%s\" exited on a signal"; 1640 else if (WEXITSTATUS(status) != 0) 1641 *errnum = "\"%s\" returned non-zero status"; 1642 1643 /* 1644 * Null-terminate the result, convert newlines to spaces and 1645 * install it in the variable. 1646 */ 1647 res[cc] = '\0'; 1648 cp = &res[cc]; 1649 1650 if (cc > 0 && *--cp == '\n') { 1651 /* 1652 * A final newline is just stripped 1653 */ 1654 *cp-- = '\0'; 1655 } 1656 while (cp >= res) { 1657 if (*cp == '\n') { 1658 *cp = ' '; 1659 } 1660 cp--; 1661 } 1662 break; 1663 } 1664 return res; 1665 bad: 1666 res = bmake_malloc(1); 1667 *res = '\0'; 1668 return res; 1669 } 1670 1671 /*- 1672 * Error -- 1673 * Print an error message given its format. 1674 * 1675 * Results: 1676 * None. 1677 * 1678 * Side Effects: 1679 * The message is printed. 1680 */ 1681 /* VARARGS */ 1682 void 1683 Error(const char *fmt, ...) 1684 { 1685 va_list ap; 1686 FILE *err_file; 1687 1688 err_file = debug_file; 1689 if (err_file == stdout) 1690 err_file = stderr; 1691 (void)fflush(stdout); 1692 for (;;) { 1693 va_start(ap, fmt); 1694 fprintf(err_file, "%s: ", progname); 1695 (void)vfprintf(err_file, fmt, ap); 1696 va_end(ap); 1697 (void)fprintf(err_file, "\n"); 1698 (void)fflush(err_file); 1699 if (err_file == stderr) 1700 break; 1701 err_file = stderr; 1702 } 1703 } 1704 1705 /*- 1706 * Fatal -- 1707 * Produce a Fatal error message. If jobs are running, waits for them 1708 * to finish. 1709 * 1710 * Results: 1711 * None 1712 * 1713 * Side Effects: 1714 * The program exits 1715 */ 1716 /* VARARGS */ 1717 void 1718 Fatal(const char *fmt, ...) 1719 { 1720 va_list ap; 1721 1722 va_start(ap, fmt); 1723 if (jobsRunning) 1724 Job_Wait(); 1725 1726 (void)fflush(stdout); 1727 (void)vfprintf(stderr, fmt, ap); 1728 va_end(ap); 1729 (void)fprintf(stderr, "\n"); 1730 (void)fflush(stderr); 1731 1732 PrintOnError(NULL, NULL); 1733 1734 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1735 Targ_PrintGraph(2); 1736 Trace_Log(MAKEERROR, 0); 1737 exit(2); /* Not 1 so -q can distinguish error */ 1738 } 1739 1740 /* 1741 * Punt -- 1742 * Major exception once jobs are being created. Kills all jobs, prints 1743 * a message and exits. 1744 * 1745 * Results: 1746 * None 1747 * 1748 * Side Effects: 1749 * All children are killed indiscriminately and the program Lib_Exits 1750 */ 1751 /* VARARGS */ 1752 void 1753 Punt(const char *fmt, ...) 1754 { 1755 va_list ap; 1756 1757 va_start(ap, fmt); 1758 (void)fflush(stdout); 1759 (void)fprintf(stderr, "%s: ", progname); 1760 (void)vfprintf(stderr, fmt, ap); 1761 va_end(ap); 1762 (void)fprintf(stderr, "\n"); 1763 (void)fflush(stderr); 1764 1765 PrintOnError(NULL, NULL); 1766 1767 DieHorribly(); 1768 } 1769 1770 /*- 1771 * DieHorribly -- 1772 * Exit without giving a message. 1773 * 1774 * Results: 1775 * None 1776 * 1777 * Side Effects: 1778 * A big one... 1779 */ 1780 void 1781 DieHorribly(void) 1782 { 1783 if (jobsRunning) 1784 Job_AbortAll(); 1785 if (DEBUG(GRAPH2)) 1786 Targ_PrintGraph(2); 1787 Trace_Log(MAKEERROR, 0); 1788 exit(2); /* Not 1, so -q can distinguish error */ 1789 } 1790 1791 /* 1792 * Finish -- 1793 * Called when aborting due to errors in child shell to signal 1794 * abnormal exit. 1795 * 1796 * Results: 1797 * None 1798 * 1799 * Side Effects: 1800 * The program exits 1801 */ 1802 void 1803 Finish(int errors) 1804 /* number of errors encountered in Make_Make */ 1805 { 1806 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1807 } 1808 1809 /* 1810 * enunlink -- 1811 * Remove a file carefully, avoiding directories. 1812 */ 1813 int 1814 eunlink(const char *file) 1815 { 1816 struct stat st; 1817 1818 if (lstat(file, &st) == -1) 1819 return -1; 1820 1821 if (S_ISDIR(st.st_mode)) { 1822 errno = EISDIR; 1823 return -1; 1824 } 1825 return unlink(file); 1826 } 1827 1828 /* 1829 * execError -- 1830 * Print why exec failed, avoiding stdio. 1831 */ 1832 void 1833 execError(const char *af, const char *av) 1834 { 1835 #ifdef USE_IOVEC 1836 int i = 0; 1837 struct iovec iov[8]; 1838 #define IOADD(s) \ 1839 (void)(iov[i].iov_base = UNCONST(s), \ 1840 iov[i].iov_len = strlen(iov[i].iov_base), \ 1841 i++) 1842 #else 1843 #define IOADD(void)write(2, s, strlen(s)) 1844 #endif 1845 1846 IOADD(progname); 1847 IOADD(": "); 1848 IOADD(af); 1849 IOADD("("); 1850 IOADD(av); 1851 IOADD(") failed ("); 1852 IOADD(strerror(errno)); 1853 IOADD(")\n"); 1854 1855 #ifdef USE_IOVEC 1856 (void)writev(2, iov, 8); 1857 #endif 1858 } 1859 1860 /* 1861 * usage -- 1862 * exit with usage message 1863 */ 1864 static void 1865 usage(void) 1866 { 1867 (void)fprintf(stderr, 1868 "usage: %s [-BeikNnqrstWX] \n\ 1869 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1870 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1871 [-V variable] [variable=value] [target ...]\n", progname); 1872 exit(2); 1873 } 1874 1875 1876 int 1877 PrintAddr(void *a, void *b) 1878 { 1879 printf("%lx ", (unsigned long) a); 1880 return b ? 0 : 0; 1881 } 1882 1883 1884 1885 void 1886 PrintOnError(GNode *gn, const char *s) 1887 { 1888 static GNode *en = NULL; 1889 char tmp[64]; 1890 char *cp; 1891 1892 if (s) 1893 printf("%s", s); 1894 1895 printf("\n%s: stopped in %s\n", progname, curdir); 1896 1897 if (en) 1898 return; /* we've been here! */ 1899 if (gn) { 1900 /* 1901 * We can print this even if there is no .ERROR target. 1902 */ 1903 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1904 } 1905 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1906 sizeof(tmp) - 1); 1907 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); 1908 if (cp) { 1909 if (*cp) 1910 printf("%s", cp); 1911 free(cp); 1912 } 1913 /* 1914 * Finally, see if there is a .ERROR target, and run it if so. 1915 */ 1916 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1917 if (en) { 1918 en->type |= OP_SPECIAL; 1919 Compat_Make(en, en); 1920 } 1921 } 1922 1923 void 1924 Main_ExportMAKEFLAGS(Boolean first) 1925 { 1926 static int once = 1; 1927 char tmp[64]; 1928 char *s; 1929 1930 if (once != first) 1931 return; 1932 once = 0; 1933 1934 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1935 sizeof(tmp)); 1936 s = Var_Subst(NULL, tmp, VAR_CMD, 0); 1937 if (s && *s) { 1938 #ifdef POSIX 1939 setenv("MAKEFLAGS", s, 1); 1940 #else 1941 setenv("MAKE", s, 1); 1942 #endif 1943 } 1944 } 1945 1946 /* 1947 * Create and open a temp file using "pattern". 1948 * If "fnamep" is provided set it to a copy of the filename created. 1949 * Otherwise unlink the file once open. 1950 */ 1951 int 1952 mkTempFile(const char *pattern, char **fnamep) 1953 { 1954 static char *tmpdir = NULL; 1955 char tfile[MAXPATHLEN]; 1956 int fd; 1957 1958 if (!pattern) 1959 pattern = TMPPAT; 1960 1961 if (!tmpdir) { 1962 struct stat st; 1963 1964 /* 1965 * Honor $TMPDIR but only if it is valid. 1966 * Ensure it ends with /. 1967 */ 1968 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0); 1969 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 1970 free(tmpdir); 1971 tmpdir = bmake_strdup(_PATH_TMP); 1972 } 1973 } 1974 if (pattern[0] == '/') { 1975 snprintf(tfile, sizeof(tfile), "%s", pattern); 1976 } else { 1977 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 1978 } 1979 if ((fd = mkstemp(tfile)) < 0) 1980 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 1981 if (fnamep) { 1982 *fnamep = bmake_strdup(tfile); 1983 } else { 1984 unlink(tfile); /* we just want the descriptor */ 1985 } 1986 return fd; 1987 } 1988
Indexes created Mon Sep 22 13:09:51 GMT 2025