main.c revision 1.258
1 /* $NetBSD: main.c,v 1.258 2017/03/11 23:59:02 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 1.258 2017/03/11 23:59:02 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 1.258 2017/03/11 23:59:02 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 optional arguments 103 * for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and arguments for it. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and arguments for it. 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/stat.h> 121 #ifdef MAKE_NATIVE 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include <sys/wait.h> 126 127 #include <errno.h> 128 #include <signal.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 #include <ctype.h> 134 135 #include "make.h" 136 #include "hash.h" 137 #include "dir.h" 138 #include "job.h" 139 #include "pathnames.h" 140 #include "trace.h" 141 142 #ifdef USE_IOVEC 143 #include <sys/uio.h> 144 #endif 145 146 #ifndef DEFMAXLOCAL 147 #define DEFMAXLOCAL DEFMAXJOBS 148 #endif /* DEFMAXLOCAL */ 149 150 Lst create; /* Targets to be made */ 151 time_t now; /* Time at start of make */ 152 GNode *DEFAULT; /* .DEFAULT node */ 153 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 154 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 155 156 static Boolean noBuiltins; /* -r flag */ 157 static Lst makefiles; /* ordered list of makefiles to read */ 158 static Boolean printVars; /* print value of one or more vars */ 159 static Lst variables; /* list of variables to print */ 160 int maxJobs; /* -j argument */ 161 static int maxJobTokens; /* -j argument */ 162 Boolean compatMake; /* -B argument */ 163 int debug; /* -d argument */ 164 Boolean debugVflag; /* -dV */ 165 Boolean noExecute; /* -n flag */ 166 Boolean noRecursiveExecute; /* -N flag */ 167 Boolean keepgoing; /* -k flag */ 168 Boolean queryFlag; /* -q flag */ 169 Boolean touchFlag; /* -t flag */ 170 Boolean enterFlag; /* -w flag */ 171 Boolean enterFlagObj; /* -w and objdir != srcdir */ 172 Boolean ignoreErrors; /* -i flag */ 173 Boolean beSilent; /* -s flag */ 174 Boolean oldVars; /* variable substitution style */ 175 Boolean checkEnvFirst; /* -e flag */ 176 Boolean parseWarnFatal; /* -W flag */ 177 Boolean jobServer; /* -J flag */ 178 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 179 Boolean varNoExportEnv; /* -X flag */ 180 Boolean doing_depend; /* Set while reading .depend */ 181 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 182 static const char * tracefile; 183 static void MainParseArgs(int, char **); 184 static int ReadMakefile(const void *, const void *); 185 static void usage(void) MAKE_ATTR_DEAD; 186 187 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 188 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 189 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 190 char *progname; /* the program name */ 191 char *makeDependfile; 192 pid_t myPid; 193 int makelevel; 194 195 Boolean forceJobs = FALSE; 196 197 extern Lst parseIncPath; 198 199 /* 200 * For compatibility with the POSIX version of MAKEFLAGS that includes 201 * all the options with out -, convert flags to -f -l -a -g -s. 202 */ 203 static char * 204 explode(const char *flags) 205 { 206 size_t len; 207 char *nf, *st; 208 const char *f; 209 210 if (flags == NULL) 211 return NULL; 212 213 for (f = flags; *f; f++) 214 if (!isalpha((unsigned char)*f)) 215 break; 216 217 if (*f) 218 return bmake_strdup(flags); 219 220 len = strlen(flags); 221 st = nf = bmake_malloc(len * 3 + 1); 222 while (*flags) { 223 *nf++ = '-'; 224 *nf++ = *flags++; 225 *nf++ = ' '; 226 } 227 *nf = '\0'; 228 return st; 229 } 230 231 static void 232 parse_debug_options(const char *argvalue) 233 { 234 const char *modules; 235 const char *mode; 236 char *fname; 237 int len; 238 239 for (modules = argvalue; *modules; ++modules) { 240 switch (*modules) { 241 case 'A': 242 debug = ~0; 243 break; 244 case 'a': 245 debug |= DEBUG_ARCH; 246 break; 247 case 'C': 248 debug |= DEBUG_CWD; 249 break; 250 case 'c': 251 debug |= DEBUG_COND; 252 break; 253 case 'd': 254 debug |= DEBUG_DIR; 255 break; 256 case 'e': 257 debug |= DEBUG_ERROR; 258 break; 259 case 'f': 260 debug |= DEBUG_FOR; 261 break; 262 case 'g': 263 if (modules[1] == '1') { 264 debug |= DEBUG_GRAPH1; 265 ++modules; 266 } 267 else if (modules[1] == '2') { 268 debug |= DEBUG_GRAPH2; 269 ++modules; 270 } 271 else if (modules[1] == '3') { 272 debug |= DEBUG_GRAPH3; 273 ++modules; 274 } 275 break; 276 case 'j': 277 debug |= DEBUG_JOB; 278 break; 279 case 'l': 280 debug |= DEBUG_LOUD; 281 break; 282 case 'M': 283 debug |= DEBUG_META; 284 break; 285 case 'm': 286 debug |= DEBUG_MAKE; 287 break; 288 case 'n': 289 debug |= DEBUG_SCRIPT; 290 break; 291 case 'p': 292 debug |= DEBUG_PARSE; 293 break; 294 case 's': 295 debug |= DEBUG_SUFF; 296 break; 297 case 't': 298 debug |= DEBUG_TARG; 299 break; 300 case 'V': 301 debugVflag = TRUE; 302 break; 303 case 'v': 304 debug |= DEBUG_VAR; 305 break; 306 case 'x': 307 debug |= DEBUG_SHELL; 308 break; 309 case 'F': 310 if (debug_file != stdout && debug_file != stderr) 311 fclose(debug_file); 312 if (*++modules == '+') { 313 modules++; 314 mode = "a"; 315 } else 316 mode = "w"; 317 if (strcmp(modules, "stdout") == 0) { 318 debug_file = stdout; 319 goto debug_setbuf; 320 } 321 if (strcmp(modules, "stderr") == 0) { 322 debug_file = stderr; 323 goto debug_setbuf; 324 } 325 len = strlen(modules); 326 fname = malloc(len + 20); 327 memcpy(fname, modules, len + 1); 328 /* Let the filename be modified by the pid */ 329 if (strcmp(fname + len - 3, ".%d") == 0) 330 snprintf(fname + len - 2, 20, "%d", getpid()); 331 debug_file = fopen(fname, mode); 332 if (!debug_file) { 333 fprintf(stderr, "Cannot open debug file %s\n", 334 fname); 335 usage(); 336 } 337 free(fname); 338 goto debug_setbuf; 339 default: 340 (void)fprintf(stderr, 341 "%s: illegal argument to d option -- %c\n", 342 progname, *modules); 343 usage(); 344 } 345 } 346 debug_setbuf: 347 /* 348 * Make the debug_file unbuffered, and make 349 * stdout line buffered (unless debugfile == stdout). 350 */ 351 setvbuf(debug_file, NULL, _IONBF, 0); 352 if (debug_file != stdout) { 353 setvbuf(stdout, NULL, _IOLBF, 0); 354 } 355 } 356 357 /*- 358 * MainParseArgs -- 359 * Parse a given argument vector. Called from main() and from 360 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 361 * 362 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 363 * 364 * Results: 365 * None 366 * 367 * Side Effects: 368 * Various global and local flags will be set depending on the flags 369 * given 370 */ 371 static void 372 MainParseArgs(int argc, char **argv) 373 { 374 char *p; 375 int c = '?'; 376 int arginc; 377 char *argvalue; 378 const char *getopt_def; 379 struct stat sa, sb; 380 char *optscan; 381 Boolean inOption, dashDash = FALSE; 382 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 383 384 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 385 /* Can't actually use getopt(3) because rescanning is not portable */ 386 387 getopt_def = OPTFLAGS; 388 rearg: 389 inOption = FALSE; 390 optscan = NULL; 391 while(argc > 1) { 392 char *getopt_spec; 393 if(!inOption) 394 optscan = argv[1]; 395 c = *optscan++; 396 arginc = 0; 397 if(inOption) { 398 if(c == '\0') { 399 ++argv; 400 --argc; 401 inOption = FALSE; 402 continue; 403 } 404 } else { 405 if (c != '-' || dashDash) 406 break; 407 inOption = TRUE; 408 c = *optscan++; 409 } 410 /* '-' found at some earlier point */ 411 getopt_spec = strchr(getopt_def, c); 412 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 413 /* -<something> found, and <something> should have an arg */ 414 inOption = FALSE; 415 arginc = 1; 416 argvalue = optscan; 417 if(*argvalue == '\0') { 418 if (argc < 3) 419 goto noarg; 420 argvalue = argv[2]; 421 arginc = 2; 422 } 423 } else { 424 argvalue = NULL; 425 } 426 switch(c) { 427 case '\0': 428 arginc = 1; 429 inOption = FALSE; 430 break; 431 case 'B': 432 compatMake = TRUE; 433 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 434 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 435 break; 436 case 'C': 437 if (chdir(argvalue) == -1) { 438 (void)fprintf(stderr, 439 "%s: chdir %s: %s\n", 440 progname, argvalue, 441 strerror(errno)); 442 exit(1); 443 } 444 if (getcwd(curdir, MAXPATHLEN) == NULL) { 445 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 446 exit(2); 447 } 448 if (argvalue[0] == '/' && 449 stat(argvalue, &sa) != -1 && 450 stat(curdir, &sb) != -1 && 451 sa.st_ino == sb.st_ino && 452 sa.st_dev == sb.st_dev) 453 strncpy(curdir, argvalue, MAXPATHLEN); 454 ignorePWD = TRUE; 455 break; 456 case 'D': 457 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 458 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 459 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 460 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 461 break; 462 case 'I': 463 if (argvalue == NULL) goto noarg; 464 Parse_AddIncludeDir(argvalue); 465 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 466 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 467 break; 468 case 'J': 469 if (argvalue == NULL) goto noarg; 470 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 471 (void)fprintf(stderr, 472 "%s: internal error -- J option malformed (%s)\n", 473 progname, argvalue); 474 usage(); 475 } 476 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 477 (fcntl(jp_1, F_GETFD, 0) < 0)) { 478 #if 0 479 (void)fprintf(stderr, 480 "%s: ###### warning -- J descriptors were closed!\n", 481 progname); 482 exit(2); 483 #endif 484 jp_0 = -1; 485 jp_1 = -1; 486 compatMake = TRUE; 487 } else { 488 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 489 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 490 jobServer = TRUE; 491 } 492 break; 493 case 'N': 494 noExecute = TRUE; 495 noRecursiveExecute = TRUE; 496 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 497 break; 498 case 'S': 499 keepgoing = FALSE; 500 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 501 break; 502 case 'T': 503 if (argvalue == NULL) goto noarg; 504 tracefile = bmake_strdup(argvalue); 505 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 506 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 507 break; 508 case 'V': 509 if (argvalue == NULL) goto noarg; 510 printVars = TRUE; 511 (void)Lst_AtEnd(variables, argvalue); 512 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 513 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 514 break; 515 case 'W': 516 parseWarnFatal = TRUE; 517 break; 518 case 'X': 519 varNoExportEnv = TRUE; 520 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 521 break; 522 case 'd': 523 if (argvalue == NULL) goto noarg; 524 /* If '-d-opts' don't pass to children */ 525 if (argvalue[0] == '-') 526 argvalue++; 527 else { 528 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 529 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 530 } 531 parse_debug_options(argvalue); 532 break; 533 case 'e': 534 checkEnvFirst = TRUE; 535 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 536 break; 537 case 'f': 538 if (argvalue == NULL) goto noarg; 539 (void)Lst_AtEnd(makefiles, argvalue); 540 break; 541 case 'i': 542 ignoreErrors = TRUE; 543 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 544 break; 545 case 'j': 546 if (argvalue == NULL) goto noarg; 547 forceJobs = TRUE; 548 maxJobs = strtol(argvalue, &p, 0); 549 if (*p != '\0' || maxJobs < 1) { 550 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 551 progname); 552 exit(1); 553 } 554 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 555 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 556 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 557 maxJobTokens = maxJobs; 558 break; 559 case 'k': 560 keepgoing = TRUE; 561 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 562 break; 563 case 'm': 564 if (argvalue == NULL) goto noarg; 565 /* look for magic parent directory search string */ 566 if (strncmp(".../", argvalue, 4) == 0) { 567 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 568 found_path, sizeof(found_path))) 569 break; /* nothing doing */ 570 (void)Dir_AddDir(sysIncPath, found_path); 571 } else { 572 (void)Dir_AddDir(sysIncPath, argvalue); 573 } 574 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 575 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 576 break; 577 case 'n': 578 noExecute = TRUE; 579 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 580 break; 581 case 'q': 582 queryFlag = TRUE; 583 /* Kind of nonsensical, wot? */ 584 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 585 break; 586 case 'r': 587 noBuiltins = TRUE; 588 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 589 break; 590 case 's': 591 beSilent = TRUE; 592 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 593 break; 594 case 't': 595 touchFlag = TRUE; 596 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 597 break; 598 case 'w': 599 enterFlag = TRUE; 600 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 601 break; 602 case '-': 603 dashDash = TRUE; 604 break; 605 default: 606 case '?': 607 usage(); 608 } 609 argv += arginc; 610 argc -= arginc; 611 } 612 613 oldVars = TRUE; 614 615 /* 616 * See if the rest of the arguments are variable assignments and 617 * perform them if so. Else take them to be targets and stuff them 618 * on the end of the "create" list. 619 */ 620 for (; argc > 1; ++argv, --argc) 621 if (Parse_IsVar(argv[1])) { 622 Parse_DoVar(argv[1], VAR_CMD); 623 } else { 624 if (!*argv[1]) 625 Punt("illegal (null) argument."); 626 if (*argv[1] == '-' && !dashDash) 627 goto rearg; 628 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 629 } 630 631 return; 632 noarg: 633 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 634 progname, c); 635 usage(); 636 } 637 638 /*- 639 * Main_ParseArgLine -- 640 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 641 * is encountered and by main() when reading the .MAKEFLAGS envariable. 642 * Takes a line of arguments and breaks it into its 643 * component words and passes those words and the number of them to the 644 * MainParseArgs function. 645 * The line should have all its leading whitespace removed. 646 * 647 * Input: 648 * line Line to fracture 649 * 650 * Results: 651 * None 652 * 653 * Side Effects: 654 * Only those that come from the various arguments. 655 */ 656 void 657 Main_ParseArgLine(const char *line) 658 { 659 char **argv; /* Manufactured argument vector */ 660 int argc; /* Number of arguments in argv */ 661 char *args; /* Space used by the args */ 662 char *buf, *p1; 663 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 664 size_t len; 665 666 if (line == NULL) 667 return; 668 for (; *line == ' '; ++line) 669 continue; 670 if (!*line) 671 return; 672 673 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 674 (void)snprintf(buf, len, "%s %s", argv0, line); 675 free(p1); 676 677 argv = brk_string(buf, &argc, TRUE, &args); 678 if (argv == NULL) { 679 Error("Unterminated quoted string [%s]", buf); 680 free(buf); 681 return; 682 } 683 free(buf); 684 MainParseArgs(argc, argv); 685 686 free(args); 687 free(argv); 688 } 689 690 Boolean 691 Main_SetObjdir(const char *fmt, ...) 692 { 693 struct stat sb; 694 char *p, *path; 695 char buf[MAXPATHLEN + 1], pbuf[MAXPATHLEN + 1]; 696 Boolean rc = FALSE; 697 va_list ap; 698 699 va_start(ap, fmt); 700 vsnprintf(path = pbuf, MAXPATHLEN, fmt, ap); 701 va_end(ap); 702 703 /* expand variable substitutions */ 704 if (strchr(path, '$') != 0) { 705 snprintf(buf, MAXPATHLEN, "%s", path); 706 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, VARF_WANTRES); 707 } else 708 p = NULL; 709 710 if (path[0] != '/') { 711 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 712 path = buf; 713 } 714 715 /* look for the directory and try to chdir there */ 716 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 717 if (chdir(path)) { 718 (void)fprintf(stderr, "make warning: %s: %s.\n", 719 path, strerror(errno)); 720 } else { 721 strncpy(objdir, path, MAXPATHLEN); 722 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 723 setenv("PWD", objdir, 1); 724 Dir_InitDot(); 725 rc = TRUE; 726 if (enterFlag && strcmp(objdir, curdir) != 0) 727 enterFlagObj = TRUE; 728 } 729 } 730 731 free(p); 732 return rc; 733 } 734 735 static Boolean 736 Main_SetVarObjdir(const char *var, const char *suffix) 737 { 738 char *p1, *path; 739 if ((path = Var_Value(var, VAR_CMD, &p1)) == NULL) 740 return FALSE; 741 742 (void)Main_SetObjdir("%s%s", path, suffix); 743 free(p1); 744 return TRUE; 745 } 746 747 /*- 748 * ReadAllMakefiles -- 749 * wrapper around ReadMakefile() to read all. 750 * 751 * Results: 752 * TRUE if ok, FALSE on error 753 */ 754 static int 755 ReadAllMakefiles(const void *p, const void *q) 756 { 757 return (ReadMakefile(p, q) == 0); 758 } 759 760 int 761 str2Lst_Append(Lst lp, char *str, const char *sep) 762 { 763 char *cp; 764 int n; 765 766 if (!sep) 767 sep = " \t"; 768 769 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 770 (void)Lst_AtEnd(lp, cp); 771 n++; 772 } 773 return (n); 774 } 775 776 #ifdef SIGINFO 777 /*ARGSUSED*/ 778 static void 779 siginfo(int signo MAKE_ATTR_UNUSED) 780 { 781 char dir[MAXPATHLEN]; 782 char str[2 * MAXPATHLEN]; 783 int len; 784 if (getcwd(dir, sizeof(dir)) == NULL) 785 return; 786 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 787 if (len > 0) 788 (void)write(STDERR_FILENO, str, (size_t)len); 789 } 790 #endif 791 792 /* 793 * Allow makefiles some control over the mode we run in. 794 */ 795 void 796 MakeMode(const char *mode) 797 { 798 char *mp = NULL; 799 800 if (!mode) 801 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 802 VAR_GLOBAL, VARF_WANTRES); 803 804 if (mode && *mode) { 805 if (strstr(mode, "compat")) { 806 compatMake = TRUE; 807 forceJobs = FALSE; 808 } 809 #if USE_META 810 if (strstr(mode, "meta")) 811 meta_mode_init(mode); 812 #endif 813 } 814 815 free(mp); 816 } 817 818 /*- 819 * main -- 820 * The main function, for obvious reasons. Initializes variables 821 * and a few modules, then parses the arguments give it in the 822 * environment and on the command line. Reads the system makefile 823 * followed by either Makefile, makefile or the file given by the 824 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 825 * flags it has received by then uses either the Make or the Compat 826 * module to create the initial list of targets. 827 * 828 * Results: 829 * If -q was given, exits -1 if anything was out-of-date. Else it exits 830 * 0. 831 * 832 * Side Effects: 833 * The program exits when done. Targets are created. etc. etc. etc. 834 */ 835 int 836 main(int argc, char **argv) 837 { 838 Lst targs; /* target nodes to create -- passed to Make_Init */ 839 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 840 struct stat sb, sa; 841 char *p1, *path; 842 char mdpath[MAXPATHLEN]; 843 const char *machine = getenv("MACHINE"); 844 const char *machine_arch = getenv("MACHINE_ARCH"); 845 char *syspath = getenv("MAKESYSPATH"); 846 Lst sysMkPath; /* Path of sys.mk */ 847 char *cp = NULL, *start; 848 /* avoid faults on read-only strings */ 849 static char defsyspath[] = _PATH_DEFSYSPATH; 850 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 851 struct timeval rightnow; /* to initialize random seed */ 852 struct utsname utsname; 853 854 /* default to writing debug to stderr */ 855 debug_file = stderr; 856 857 #ifdef SIGINFO 858 (void)bmake_signal(SIGINFO, siginfo); 859 #endif 860 /* 861 * Set the seed to produce a different random sequence 862 * on each program execution. 863 */ 864 gettimeofday(&rightnow, NULL); 865 srandom(rightnow.tv_sec + rightnow.tv_usec); 866 867 if ((progname = strrchr(argv[0], '/')) != NULL) 868 progname++; 869 else 870 progname = argv[0]; 871 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 872 /* 873 * get rid of resource limit on file descriptors 874 */ 875 { 876 struct rlimit rl; 877 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 878 rl.rlim_cur != rl.rlim_max) { 879 rl.rlim_cur = rl.rlim_max; 880 (void)setrlimit(RLIMIT_NOFILE, &rl); 881 } 882 } 883 #endif 884 885 if (uname(&utsname) == -1) { 886 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 887 strerror(errno)); 888 exit(2); 889 } 890 891 /* 892 * Get the name of this type of MACHINE from utsname 893 * so we can share an executable for similar machines. 894 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 895 * 896 * Note that both MACHINE and MACHINE_ARCH are decided at 897 * run-time. 898 */ 899 if (!machine) { 900 #ifdef MAKE_NATIVE 901 machine = utsname.machine; 902 #else 903 #ifdef MAKE_MACHINE 904 machine = MAKE_MACHINE; 905 #else 906 machine = "unknown"; 907 #endif 908 #endif 909 } 910 911 if (!machine_arch) { 912 #ifdef MAKE_NATIVE 913 static char machine_arch_buf[sizeof(utsname.machine)]; 914 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 915 size_t len = sizeof(machine_arch_buf); 916 917 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 918 &len, NULL, 0) < 0) { 919 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 920 strerror(errno)); 921 exit(2); 922 } 923 924 machine_arch = machine_arch_buf; 925 #else 926 #ifndef MACHINE_ARCH 927 #ifdef MAKE_MACHINE_ARCH 928 machine_arch = MAKE_MACHINE_ARCH; 929 #else 930 machine_arch = "unknown"; 931 #endif 932 #else 933 machine_arch = MACHINE_ARCH; 934 #endif 935 #endif 936 } 937 938 myPid = getpid(); /* remember this for vFork() */ 939 940 /* 941 * Just in case MAKEOBJDIR wants us to do something tricky. 942 */ 943 Var_Init(); /* Initialize the lists of variables for 944 * parsing arguments */ 945 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 946 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 947 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 948 #ifdef MAKE_VERSION 949 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 950 #endif 951 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 952 /* 953 * This is the traditional preference for makefiles. 954 */ 955 #ifndef MAKEFILE_PREFERENCE_LIST 956 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 957 #endif 958 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 959 VAR_GLOBAL, 0); 960 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 961 962 create = Lst_Init(FALSE); 963 makefiles = Lst_Init(FALSE); 964 printVars = FALSE; 965 debugVflag = FALSE; 966 variables = Lst_Init(FALSE); 967 beSilent = FALSE; /* Print commands as executed */ 968 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 969 noExecute = FALSE; /* Execute all commands */ 970 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 971 keepgoing = FALSE; /* Stop on error */ 972 allPrecious = FALSE; /* Remove targets when interrupted */ 973 deleteOnError = FALSE; /* Historical default behavior */ 974 queryFlag = FALSE; /* This is not just a check-run */ 975 noBuiltins = FALSE; /* Read the built-in rules */ 976 touchFlag = FALSE; /* Actually update targets */ 977 debug = 0; /* No debug verbosity, please. */ 978 jobsRunning = FALSE; 979 980 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 981 maxJobTokens = maxJobs; 982 compatMake = FALSE; /* No compat mode */ 983 ignorePWD = FALSE; 984 985 /* 986 * Initialize the parsing, directory and variable modules to prepare 987 * for the reading of inclusion paths and variable settings on the 988 * command line 989 */ 990 991 /* 992 * Initialize various variables. 993 * MAKE also gets this name, for compatibility 994 * .MAKEFLAGS gets set to the empty string just in case. 995 * MFLAGS also gets initialized empty, for compatibility. 996 */ 997 Parse_Init(); 998 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 999 /* 1000 * Leave alone if it is an absolute path, or if it does 1001 * not contain a '/' in which case we need to find it in 1002 * the path, like execvp(3) and the shells do. 1003 */ 1004 p1 = argv[0]; 1005 } else { 1006 /* 1007 * A relative path, canonicalize it. 1008 */ 1009 p1 = cached_realpath(argv[0], mdpath); 1010 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1011 p1 = argv[0]; /* realpath failed */ 1012 } 1013 } 1014 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1015 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1016 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1017 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1018 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1019 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1020 /* some makefiles need to know this */ 1021 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1022 1023 /* 1024 * Set some other useful macros 1025 */ 1026 { 1027 char tmp[64], *ep; 1028 1029 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1030 if (makelevel < 0) 1031 makelevel = 0; 1032 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1033 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1034 snprintf(tmp, sizeof(tmp), "%u", myPid); 1035 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1036 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1037 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1038 } 1039 if (makelevel > 0) { 1040 char pn[1024]; 1041 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1042 progname = bmake_strdup(pn); 1043 } 1044 1045 #ifdef USE_META 1046 meta_init(); 1047 #endif 1048 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1049 1050 /* 1051 * First snag any flags out of the MAKE environment variable. 1052 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1053 * in a different format). 1054 */ 1055 #ifdef POSIX 1056 p1 = explode(getenv("MAKEFLAGS")); 1057 Main_ParseArgLine(p1); 1058 free(p1); 1059 #else 1060 Main_ParseArgLine(getenv("MAKE")); 1061 #endif 1062 1063 /* 1064 * Find where we are (now). 1065 * We take care of PWD for the automounter below... 1066 */ 1067 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1068 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1069 progname, strerror(errno)); 1070 exit(2); 1071 } 1072 1073 MainParseArgs(argc, argv); 1074 1075 if (enterFlag) 1076 printf("%s: Entering directory `%s'\n", progname, curdir); 1077 1078 /* 1079 * Verify that cwd is sane. 1080 */ 1081 if (stat(curdir, &sa) == -1) { 1082 (void)fprintf(stderr, "%s: %s: %s.\n", 1083 progname, curdir, strerror(errno)); 1084 exit(2); 1085 } 1086 1087 /* 1088 * All this code is so that we know where we are when we start up 1089 * on a different machine with pmake. 1090 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1091 * since the value of curdir can vary depending on how we got 1092 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1093 * or via subdir.mk in which case its likely a shell which does 1094 * not provide it. 1095 * So, to stop it breaking this case only, we ignore PWD if 1096 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1097 */ 1098 #ifndef NO_PWD_OVERRIDE 1099 if (!ignorePWD) { 1100 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1101 1102 if ((pwd = getenv("PWD")) != NULL && 1103 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1104 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1105 VAR_CMD, &ptmp2); 1106 1107 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1108 if (stat(pwd, &sb) == 0 && 1109 sa.st_ino == sb.st_ino && 1110 sa.st_dev == sb.st_dev) 1111 (void)strncpy(curdir, pwd, MAXPATHLEN); 1112 } 1113 } 1114 free(ptmp1); 1115 free(ptmp2); 1116 } 1117 #endif 1118 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1119 1120 /* 1121 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1122 * MAKEOBJDIR is set in the environment, try only that value 1123 * and fall back to .CURDIR if it does not exist. 1124 * 1125 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1126 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1127 * of these paths exist, just use .CURDIR. 1128 */ 1129 Dir_Init(curdir); 1130 (void)Main_SetObjdir("%s", curdir); 1131 1132 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1133 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1134 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1135 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1136 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1137 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1138 1139 /* 1140 * Initialize archive, target and suffix modules in preparation for 1141 * parsing the makefile(s) 1142 */ 1143 Arch_Init(); 1144 Targ_Init(); 1145 Suff_Init(); 1146 Trace_Init(tracefile); 1147 1148 DEFAULT = NULL; 1149 (void)time(&now); 1150 1151 Trace_Log(MAKESTART, NULL); 1152 1153 /* 1154 * Set up the .TARGETS variable to contain the list of targets to be 1155 * created. If none specified, make the variable empty -- the parser 1156 * will fill the thing in with the default or .MAIN target. 1157 */ 1158 if (!Lst_IsEmpty(create)) { 1159 LstNode ln; 1160 1161 for (ln = Lst_First(create); ln != NULL; 1162 ln = Lst_Succ(ln)) { 1163 char *name = (char *)Lst_Datum(ln); 1164 1165 Var_Append(".TARGETS", name, VAR_GLOBAL); 1166 } 1167 } else 1168 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1169 1170 1171 /* 1172 * If no user-supplied system path was given (through the -m option) 1173 * add the directories from the DEFSYSPATH (more than one may be given 1174 * as dir1:...:dirn) to the system include path. 1175 */ 1176 if (syspath == NULL || *syspath == '\0') 1177 syspath = defsyspath; 1178 else 1179 syspath = bmake_strdup(syspath); 1180 1181 for (start = syspath; *start != '\0'; start = cp) { 1182 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1183 continue; 1184 if (*cp == ':') { 1185 *cp++ = '\0'; 1186 } 1187 /* look for magic parent directory search string */ 1188 if (strncmp(".../", start, 4) != 0) { 1189 (void)Dir_AddDir(defIncPath, start); 1190 } else { 1191 if (Dir_FindHereOrAbove(curdir, start+4, 1192 found_path, sizeof(found_path))) { 1193 (void)Dir_AddDir(defIncPath, found_path); 1194 } 1195 } 1196 } 1197 if (syspath != defsyspath) 1198 free(syspath); 1199 1200 /* 1201 * Read in the built-in rules first, followed by the specified 1202 * makefile, if it was (makefile != NULL), or the default 1203 * makefile and Makefile, in that order, if it wasn't. 1204 */ 1205 if (!noBuiltins) { 1206 LstNode ln; 1207 1208 sysMkPath = Lst_Init(FALSE); 1209 Dir_Expand(_PATH_DEFSYSMK, 1210 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1211 sysMkPath); 1212 if (Lst_IsEmpty(sysMkPath)) 1213 Fatal("%s: no system rules (%s).", progname, 1214 _PATH_DEFSYSMK); 1215 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1216 if (ln == NULL) 1217 Fatal("%s: cannot open %s.", progname, 1218 (char *)Lst_Datum(ln)); 1219 } 1220 1221 if (!Lst_IsEmpty(makefiles)) { 1222 LstNode ln; 1223 1224 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1225 if (ln != NULL) 1226 Fatal("%s: cannot open %s.", progname, 1227 (char *)Lst_Datum(ln)); 1228 } else { 1229 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1230 VAR_CMD, VARF_WANTRES); 1231 if (p1) { 1232 (void)str2Lst_Append(makefiles, p1, NULL); 1233 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1234 free(p1); 1235 } 1236 } 1237 1238 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1239 if (!noBuiltins || !printVars) { 1240 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1241 VAR_CMD, VARF_WANTRES); 1242 doing_depend = TRUE; 1243 (void)ReadMakefile(makeDependfile, NULL); 1244 doing_depend = FALSE; 1245 } 1246 1247 if (enterFlagObj) 1248 printf("%s: Entering directory `%s'\n", progname, objdir); 1249 1250 MakeMode(NULL); 1251 1252 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1253 free(p1); 1254 1255 if (!forceJobs && !compatMake && 1256 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1257 char *value; 1258 int n; 1259 1260 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1261 n = strtol(value, NULL, 0); 1262 if (n < 1) { 1263 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1264 progname); 1265 exit(1); 1266 } 1267 if (n != maxJobs) { 1268 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1269 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1270 } 1271 maxJobs = n; 1272 maxJobTokens = maxJobs; 1273 forceJobs = TRUE; 1274 free(value); 1275 } 1276 1277 /* 1278 * Be compatible if user did not specify -j and did not explicitly 1279 * turned compatibility on 1280 */ 1281 if (!compatMake && !forceJobs) { 1282 compatMake = TRUE; 1283 } 1284 1285 if (!compatMake) 1286 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1287 if (DEBUG(JOB)) 1288 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1289 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1290 1291 if (!printVars) 1292 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1293 1294 1295 /* 1296 * For compatibility, look at the directories in the VPATH variable 1297 * and add them to the search path, if the variable is defined. The 1298 * variable's value is in the same format as the PATH envariable, i.e. 1299 * <directory>:<directory>:<directory>... 1300 */ 1301 if (Var_Exists("VPATH", VAR_CMD)) { 1302 char *vpath, savec; 1303 /* 1304 * GCC stores string constants in read-only memory, but 1305 * Var_Subst will want to write this thing, so store it 1306 * in an array 1307 */ 1308 static char VPATH[] = "${VPATH}"; 1309 1310 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1311 path = vpath; 1312 do { 1313 /* skip to end of directory */ 1314 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1315 continue; 1316 /* Save terminator character so know when to stop */ 1317 savec = *cp; 1318 *cp = '\0'; 1319 /* Add directory to search path */ 1320 (void)Dir_AddDir(dirSearchPath, path); 1321 *cp = savec; 1322 path = cp + 1; 1323 } while (savec == ':'); 1324 free(vpath); 1325 } 1326 1327 /* 1328 * Now that all search paths have been read for suffixes et al, it's 1329 * time to add the default search path to their lists... 1330 */ 1331 Suff_DoPaths(); 1332 1333 /* 1334 * Propagate attributes through :: dependency lists. 1335 */ 1336 Targ_Propagate(); 1337 1338 /* print the initial graph, if the user requested it */ 1339 if (DEBUG(GRAPH1)) 1340 Targ_PrintGraph(1); 1341 1342 /* print the values of any variables requested by the user */ 1343 if (printVars) { 1344 LstNode ln; 1345 Boolean expandVars; 1346 1347 if (debugVflag) 1348 expandVars = FALSE; 1349 else 1350 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1351 for (ln = Lst_First(variables); ln != NULL; 1352 ln = Lst_Succ(ln)) { 1353 char *var = (char *)Lst_Datum(ln); 1354 char *value; 1355 1356 if (strchr(var, '$')) { 1357 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1358 VARF_WANTRES); 1359 } else if (expandVars) { 1360 char tmp[128]; 1361 1362 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1363 Fatal("%s: variable name too big: %s", 1364 progname, var); 1365 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1366 VARF_WANTRES); 1367 } else { 1368 value = Var_Value(var, VAR_GLOBAL, &p1); 1369 } 1370 printf("%s\n", value ? value : ""); 1371 free(p1); 1372 } 1373 } else { 1374 /* 1375 * Have now read the entire graph and need to make a list of 1376 * targets to create. If none was given on the command line, 1377 * we consult the parsing module to find the main target(s) 1378 * to create. 1379 */ 1380 if (Lst_IsEmpty(create)) 1381 targs = Parse_MainName(); 1382 else 1383 targs = Targ_FindList(create, TARG_CREATE); 1384 1385 if (!compatMake) { 1386 /* 1387 * Initialize job module before traversing the graph 1388 * now that any .BEGIN and .END targets have been read. 1389 * This is done only if the -q flag wasn't given 1390 * (to prevent the .BEGIN from being executed should 1391 * it exist). 1392 */ 1393 if (!queryFlag) { 1394 Job_Init(); 1395 jobsRunning = TRUE; 1396 } 1397 1398 /* Traverse the graph, checking on all the targets */ 1399 outOfDate = Make_Run(targs); 1400 } else { 1401 /* 1402 * Compat_Init will take care of creating all the 1403 * targets as well as initializing the module. 1404 */ 1405 Compat_Run(targs); 1406 } 1407 } 1408 1409 #ifdef CLEANUP 1410 Lst_Destroy(targs, NULL); 1411 Lst_Destroy(variables, NULL); 1412 Lst_Destroy(makefiles, NULL); 1413 Lst_Destroy(create, (FreeProc *)free); 1414 #endif 1415 1416 /* print the graph now it's been processed if the user requested it */ 1417 if (DEBUG(GRAPH2)) 1418 Targ_PrintGraph(2); 1419 1420 Trace_Log(MAKEEND, 0); 1421 1422 if (enterFlagObj) 1423 printf("%s: Leaving directory `%s'\n", progname, objdir); 1424 if (enterFlag) 1425 printf("%s: Leaving directory `%s'\n", progname, curdir); 1426 1427 #ifdef USE_META 1428 meta_finish(); 1429 #endif 1430 Suff_End(); 1431 Targ_End(); 1432 Arch_End(); 1433 Var_End(); 1434 Parse_End(); 1435 Dir_End(); 1436 Job_End(); 1437 Trace_End(); 1438 1439 return outOfDate ? 1 : 0; 1440 } 1441 1442 /*- 1443 * ReadMakefile -- 1444 * Open and parse the given makefile. 1445 * 1446 * Results: 1447 * 0 if ok. -1 if couldn't open file. 1448 * 1449 * Side Effects: 1450 * lots 1451 */ 1452 static int 1453 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1454 { 1455 const char *fname = p; /* makefile to read */ 1456 int fd; 1457 size_t len = MAXPATHLEN; 1458 char *name, *path = bmake_malloc(len); 1459 1460 if (!strcmp(fname, "-")) { 1461 Parse_File(NULL /*stdin*/, -1); 1462 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1463 } else { 1464 /* if we've chdir'd, rebuild the path name */ 1465 if (strcmp(curdir, objdir) && *fname != '/') { 1466 size_t plen = strlen(curdir) + strlen(fname) + 2; 1467 if (len < plen) 1468 path = bmake_realloc(path, len = 2 * plen); 1469 1470 (void)snprintf(path, len, "%s/%s", curdir, fname); 1471 fd = open(path, O_RDONLY); 1472 if (fd != -1) { 1473 fname = path; 1474 goto found; 1475 } 1476 1477 /* If curdir failed, try objdir (ala .depend) */ 1478 plen = strlen(objdir) + strlen(fname) + 2; 1479 if (len < plen) 1480 path = bmake_realloc(path, len = 2 * plen); 1481 (void)snprintf(path, len, "%s/%s", objdir, fname); 1482 fd = open(path, O_RDONLY); 1483 if (fd != -1) { 1484 fname = path; 1485 goto found; 1486 } 1487 } else { 1488 fd = open(fname, O_RDONLY); 1489 if (fd != -1) 1490 goto found; 1491 } 1492 /* look in -I and system include directories. */ 1493 name = Dir_FindFile(fname, parseIncPath); 1494 if (!name) 1495 name = Dir_FindFile(fname, 1496 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1497 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1498 free(name); 1499 free(path); 1500 return(-1); 1501 } 1502 fname = name; 1503 /* 1504 * set the MAKEFILE variable desired by System V fans -- the 1505 * placement of the setting here means it gets set to the last 1506 * makefile specified, as it is set by SysV make. 1507 */ 1508 found: 1509 if (!doing_depend) 1510 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1511 Parse_File(fname, fd); 1512 } 1513 free(path); 1514 return(0); 1515 } 1516 1517 1518 1519 /*- 1520 * Cmd_Exec -- 1521 * Execute the command in cmd, and return the output of that command 1522 * in a string. 1523 * 1524 * Results: 1525 * A string containing the output of the command, or the empty string 1526 * If errnum is not NULL, it contains the reason for the command failure 1527 * 1528 * Side Effects: 1529 * The string must be freed by the caller. 1530 */ 1531 char * 1532 Cmd_Exec(const char *cmd, const char **errnum) 1533 { 1534 const char *args[4]; /* Args for invoking the shell */ 1535 int fds[2]; /* Pipe streams */ 1536 int cpid; /* Child PID */ 1537 int pid; /* PID from wait() */ 1538 char *res; /* result */ 1539 int status; /* command exit status */ 1540 Buffer buf; /* buffer to store the result */ 1541 char *cp; 1542 int cc; /* bytes read, or -1 */ 1543 int savederr; /* saved errno */ 1544 1545 1546 *errnum = NULL; 1547 1548 if (!shellName) 1549 Shell_Init(); 1550 /* 1551 * Set up arguments for shell 1552 */ 1553 args[0] = shellName; 1554 args[1] = "-c"; 1555 args[2] = cmd; 1556 args[3] = NULL; 1557 1558 /* 1559 * Open a pipe for fetching its output 1560 */ 1561 if (pipe(fds) == -1) { 1562 *errnum = "Couldn't create pipe for \"%s\""; 1563 goto bad; 1564 } 1565 1566 /* 1567 * Fork 1568 */ 1569 switch (cpid = vFork()) { 1570 case 0: 1571 /* 1572 * Close input side of pipe 1573 */ 1574 (void)close(fds[0]); 1575 1576 /* 1577 * Duplicate the output stream to the shell's output, then 1578 * shut the extra thing down. Note we don't fetch the error 1579 * stream...why not? Why? 1580 */ 1581 (void)dup2(fds[1], 1); 1582 (void)close(fds[1]); 1583 1584 Var_ExportVars(); 1585 1586 (void)execv(shellPath, UNCONST(args)); 1587 _exit(1); 1588 /*NOTREACHED*/ 1589 1590 case -1: 1591 *errnum = "Couldn't exec \"%s\""; 1592 goto bad; 1593 1594 default: 1595 /* 1596 * No need for the writing half 1597 */ 1598 (void)close(fds[1]); 1599 1600 savederr = 0; 1601 Buf_Init(&buf, 0); 1602 1603 do { 1604 char result[BUFSIZ]; 1605 cc = read(fds[0], result, sizeof(result)); 1606 if (cc > 0) 1607 Buf_AddBytes(&buf, cc, result); 1608 } 1609 while (cc > 0 || (cc == -1 && errno == EINTR)); 1610 if (cc == -1) 1611 savederr = errno; 1612 1613 /* 1614 * Close the input side of the pipe. 1615 */ 1616 (void)close(fds[0]); 1617 1618 /* 1619 * Wait for the process to exit. 1620 */ 1621 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1622 JobReapChild(pid, status, FALSE); 1623 continue; 1624 } 1625 cc = Buf_Size(&buf); 1626 res = Buf_Destroy(&buf, FALSE); 1627 1628 if (savederr != 0) 1629 *errnum = "Couldn't read shell's output for \"%s\""; 1630 1631 if (WIFSIGNALED(status)) 1632 *errnum = "\"%s\" exited on a signal"; 1633 else if (WEXITSTATUS(status) != 0) 1634 *errnum = "\"%s\" returned non-zero status"; 1635 1636 /* 1637 * Null-terminate the result, convert newlines to spaces and 1638 * install it in the variable. 1639 */ 1640 res[cc] = '\0'; 1641 cp = &res[cc]; 1642 1643 if (cc > 0 && *--cp == '\n') { 1644 /* 1645 * A final newline is just stripped 1646 */ 1647 *cp-- = '\0'; 1648 } 1649 while (cp >= res) { 1650 if (*cp == '\n') { 1651 *cp = ' '; 1652 } 1653 cp--; 1654 } 1655 break; 1656 } 1657 return res; 1658 bad: 1659 res = bmake_malloc(1); 1660 *res = '\0'; 1661 return res; 1662 } 1663 1664 /*- 1665 * Error -- 1666 * Print an error message given its format. 1667 * 1668 * Results: 1669 * None. 1670 * 1671 * Side Effects: 1672 * The message is printed. 1673 */ 1674 /* VARARGS */ 1675 void 1676 Error(const char *fmt, ...) 1677 { 1678 va_list ap; 1679 FILE *err_file; 1680 1681 err_file = debug_file; 1682 if (err_file == stdout) 1683 err_file = stderr; 1684 (void)fflush(stdout); 1685 for (;;) { 1686 va_start(ap, fmt); 1687 fprintf(err_file, "%s: ", progname); 1688 (void)vfprintf(err_file, fmt, ap); 1689 va_end(ap); 1690 (void)fprintf(err_file, "\n"); 1691 (void)fflush(err_file); 1692 if (err_file == stderr) 1693 break; 1694 err_file = stderr; 1695 } 1696 } 1697 1698 /*- 1699 * Fatal -- 1700 * Produce a Fatal error message. If jobs are running, waits for them 1701 * to finish. 1702 * 1703 * Results: 1704 * None 1705 * 1706 * Side Effects: 1707 * The program exits 1708 */ 1709 /* VARARGS */ 1710 void 1711 Fatal(const char *fmt, ...) 1712 { 1713 va_list ap; 1714 1715 va_start(ap, fmt); 1716 if (jobsRunning) 1717 Job_Wait(); 1718 1719 (void)fflush(stdout); 1720 (void)vfprintf(stderr, fmt, ap); 1721 va_end(ap); 1722 (void)fprintf(stderr, "\n"); 1723 (void)fflush(stderr); 1724 1725 PrintOnError(NULL, NULL); 1726 1727 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1728 Targ_PrintGraph(2); 1729 Trace_Log(MAKEERROR, 0); 1730 exit(2); /* Not 1 so -q can distinguish error */ 1731 } 1732 1733 /* 1734 * Punt -- 1735 * Major exception once jobs are being created. Kills all jobs, prints 1736 * a message and exits. 1737 * 1738 * Results: 1739 * None 1740 * 1741 * Side Effects: 1742 * All children are killed indiscriminately and the program Lib_Exits 1743 */ 1744 /* VARARGS */ 1745 void 1746 Punt(const char *fmt, ...) 1747 { 1748 va_list ap; 1749 1750 va_start(ap, fmt); 1751 (void)fflush(stdout); 1752 (void)fprintf(stderr, "%s: ", progname); 1753 (void)vfprintf(stderr, fmt, ap); 1754 va_end(ap); 1755 (void)fprintf(stderr, "\n"); 1756 (void)fflush(stderr); 1757 1758 PrintOnError(NULL, NULL); 1759 1760 DieHorribly(); 1761 } 1762 1763 /*- 1764 * DieHorribly -- 1765 * Exit without giving a message. 1766 * 1767 * Results: 1768 * None 1769 * 1770 * Side Effects: 1771 * A big one... 1772 */ 1773 void 1774 DieHorribly(void) 1775 { 1776 if (jobsRunning) 1777 Job_AbortAll(); 1778 if (DEBUG(GRAPH2)) 1779 Targ_PrintGraph(2); 1780 Trace_Log(MAKEERROR, 0); 1781 exit(2); /* Not 1, so -q can distinguish error */ 1782 } 1783 1784 /* 1785 * Finish -- 1786 * Called when aborting due to errors in child shell to signal 1787 * abnormal exit. 1788 * 1789 * Results: 1790 * None 1791 * 1792 * Side Effects: 1793 * The program exits 1794 */ 1795 void 1796 Finish(int errors) 1797 /* number of errors encountered in Make_Make */ 1798 { 1799 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1800 } 1801 1802 /* 1803 * eunlink -- 1804 * Remove a file carefully, avoiding directories. 1805 */ 1806 int 1807 eunlink(const char *file) 1808 { 1809 struct stat st; 1810 1811 if (lstat(file, &st) == -1) 1812 return -1; 1813 1814 if (S_ISDIR(st.st_mode)) { 1815 errno = EISDIR; 1816 return -1; 1817 } 1818 return unlink(file); 1819 } 1820 1821 /* 1822 * execError -- 1823 * Print why exec failed, avoiding stdio. 1824 */ 1825 void 1826 execError(const char *af, const char *av) 1827 { 1828 #ifdef USE_IOVEC 1829 int i = 0; 1830 struct iovec iov[8]; 1831 #define IOADD(s) \ 1832 (void)(iov[i].iov_base = UNCONST(s), \ 1833 iov[i].iov_len = strlen(iov[i].iov_base), \ 1834 i++) 1835 #else 1836 #define IOADD(void)write(2, s, strlen(s)) 1837 #endif 1838 1839 IOADD(progname); 1840 IOADD(": "); 1841 IOADD(af); 1842 IOADD("("); 1843 IOADD(av); 1844 IOADD(") failed ("); 1845 IOADD(strerror(errno)); 1846 IOADD(")\n"); 1847 1848 #ifdef USE_IOVEC 1849 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1850 continue; 1851 #endif 1852 } 1853 1854 /* 1855 * usage -- 1856 * exit with usage message 1857 */ 1858 static void 1859 usage(void) 1860 { 1861 char *p; 1862 if ((p = strchr(progname, '[')) != NULL) 1863 *p = '\0'; 1864 1865 (void)fprintf(stderr, 1866 "usage: %s [-BeikNnqrstWwX] \n\ 1867 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1868 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1869 [-V variable] [variable=value] [target ...]\n", progname); 1870 exit(2); 1871 } 1872 1873 1874 /* 1875 * realpath(3) can get expensive, cache results... 1876 */ 1877 char * 1878 cached_realpath(const char *pathname, char *resolved) 1879 { 1880 static GNode *cache; 1881 char *rp, *cp; 1882 1883 if (!pathname || !pathname[0]) 1884 return NULL; 1885 1886 if (!cache) { 1887 cache = Targ_NewGN("Realpath"); 1888 #ifndef DEBUG_REALPATH_CACHE 1889 cache->flags = INTERNAL; 1890 #endif 1891 } 1892 1893 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1894 /* a hit */ 1895 strncpy(resolved, rp, MAXPATHLEN); 1896 resolved[MAXPATHLEN - 1] = '\0'; 1897 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1898 Var_Set(pathname, rp, cache, 0); 1899 } /* else should we negative-cache? */ 1900 1901 free(cp); 1902 return rp ? resolved : NULL; 1903 } 1904 1905 int 1906 PrintAddr(void *a, void *b) 1907 { 1908 printf("%lx ", (unsigned long) a); 1909 return b ? 0 : 0; 1910 } 1911 1912 1913 static int 1914 addErrorCMD(void *cmdp, void *gnp) 1915 { 1916 if (cmdp == NULL) 1917 return 1; /* stop */ 1918 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1919 return 0; 1920 } 1921 1922 void 1923 PrintOnError(GNode *gn, const char *s) 1924 { 1925 static GNode *en = NULL; 1926 char tmp[64]; 1927 char *cp; 1928 1929 if (s) 1930 printf("%s", s); 1931 1932 printf("\n%s: stopped in %s\n", progname, curdir); 1933 1934 if (en) 1935 return; /* we've been here! */ 1936 if (gn) { 1937 /* 1938 * We can print this even if there is no .ERROR target. 1939 */ 1940 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1941 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 1942 Lst_ForEach(gn->commands, addErrorCMD, gn); 1943 } 1944 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1945 sizeof(tmp) - 1); 1946 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 1947 if (cp) { 1948 if (*cp) 1949 printf("%s", cp); 1950 free(cp); 1951 } 1952 fflush(stdout); 1953 1954 /* 1955 * Finally, see if there is a .ERROR target, and run it if so. 1956 */ 1957 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 1958 if (en) { 1959 en->type |= OP_SPECIAL; 1960 Compat_Make(en, en); 1961 } 1962 } 1963 1964 void 1965 Main_ExportMAKEFLAGS(Boolean first) 1966 { 1967 static int once = 1; 1968 char tmp[64]; 1969 char *s; 1970 1971 if (once != first) 1972 return; 1973 once = 0; 1974 1975 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 1976 sizeof(tmp)); 1977 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 1978 if (s && *s) { 1979 #ifdef POSIX 1980 setenv("MAKEFLAGS", s, 1); 1981 #else 1982 setenv("MAKE", s, 1); 1983 #endif 1984 } 1985 } 1986 1987 char * 1988 getTmpdir(void) 1989 { 1990 static char *tmpdir = NULL; 1991 1992 if (!tmpdir) { 1993 struct stat st; 1994 1995 /* 1996 * Honor $TMPDIR but only if it is valid. 1997 * Ensure it ends with /. 1998 */ 1999 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2000 VARF_WANTRES); 2001 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2002 free(tmpdir); 2003 tmpdir = bmake_strdup(_PATH_TMP); 2004 } 2005 } 2006 return tmpdir; 2007 } 2008 2009 /* 2010 * Create and open a temp file using "pattern". 2011 * If "fnamep" is provided set it to a copy of the filename created. 2012 * Otherwise unlink the file once open. 2013 */ 2014 int 2015 mkTempFile(const char *pattern, char **fnamep) 2016 { 2017 static char *tmpdir = NULL; 2018 char tfile[MAXPATHLEN]; 2019 int fd; 2020 2021 if (!pattern) 2022 pattern = TMPPAT; 2023 if (!tmpdir) 2024 tmpdir = getTmpdir(); 2025 if (pattern[0] == '/') { 2026 snprintf(tfile, sizeof(tfile), "%s", pattern); 2027 } else { 2028 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2029 } 2030 if ((fd = mkstemp(tfile)) < 0) 2031 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2032 if (fnamep) { 2033 *fnamep = bmake_strdup(tfile); 2034 } else { 2035 unlink(tfile); /* we just want the descriptor */ 2036 } 2037 return fd; 2038 } 2039 2040 /* 2041 * Convert a string representation of a boolean. 2042 * Anything that looks like "No", "False", "Off", "0" etc, 2043 * is FALSE, otherwise TRUE. 2044 */ 2045 Boolean 2046 s2Boolean(const char *s, Boolean bf) 2047 { 2048 if (s) { 2049 switch(*s) { 2050 case '\0': /* not set - the default wins */ 2051 break; 2052 case '0': 2053 case 'F': 2054 case 'f': 2055 case 'N': 2056 case 'n': 2057 bf = FALSE; 2058 break; 2059 case 'O': 2060 case 'o': 2061 switch (s[1]) { 2062 case 'F': 2063 case 'f': 2064 bf = FALSE; 2065 break; 2066 default: 2067 bf = TRUE; 2068 break; 2069 } 2070 break; 2071 default: 2072 bf = TRUE; 2073 break; 2074 } 2075 } 2076 return (bf); 2077 } 2078 2079 /* 2080 * Return a Boolean based on setting of a knob. 2081 * 2082 * If the knob is not set, the supplied default is the return value. 2083 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2084 * is FALSE, otherwise TRUE. 2085 */ 2086 Boolean 2087 getBoolean(const char *name, Boolean bf) 2088 { 2089 char tmp[64]; 2090 char *cp; 2091 2092 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2093 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2094 2095 if (cp) { 2096 bf = s2Boolean(cp, bf); 2097 free(cp); 2098 } 2099 } 2100 return (bf); 2101 } 2102
Indexes created Tue Sep 23 14:10:03 GMT 2025