main.c revision 1.263 1 /* $NetBSD: main.c,v 1.263 2017/04/19 04:54:17 sjg Exp $ */
2
3 /*
4 * Copyright (c) 1988, 1989, 1990, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Adam de Boor.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 /*
36 * Copyright (c) 1989 by Berkeley Softworks
37 * All rights reserved.
38 *
39 * This code is derived from software contributed to Berkeley by
40 * Adam de Boor.
41 *
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
44 * are met:
45 * 1. Redistributions of source code must retain the above copyright
46 * notice, this list of conditions and the following disclaimer.
47 * 2. Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in the
49 * documentation and/or other materials provided with the distribution.
50 * 3. All advertising materials mentioning features or use of this software
51 * must display the following acknowledgement:
52 * This product includes software developed by the University of
53 * California, Berkeley and its contributors.
54 * 4. Neither the name of the University nor the names of its contributors
55 * may be used to endorse or promote products derived from this software
56 * without specific prior written permission.
57 *
58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
68 * SUCH DAMAGE.
69 */
70
71 #ifndef MAKE_NATIVE
72 static char rcsid[] = "$NetBSD: main.c,v 1.263 2017/04/19 04:54:17 sjg Exp $";
73 #else
74 #include <sys/cdefs.h>
75 #ifndef lint
76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\
77 The Regents of the University of California. All rights reserved.");
78 #endif /* not lint */
79
80 #ifndef lint
81 #if 0
82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94";
83 #else
84 __RCSID("$NetBSD: main.c,v 1.263 2017/04/19 04:54:17 sjg Exp $");
85 #endif
86 #endif /* not lint */
87 #endif
88
89 /*-
90 * main.c --
91 * The main file for this entire program. Exit routines etc
92 * reside here.
93 *
94 * Utility functions defined in this file:
95 * Main_ParseArgLine Takes a line of arguments, breaks them and
96 * treats them as if they were given when first
97 * invoked. Used by the parse module to implement
98 * the .MFLAGS target.
99 *
100 * Error Print a tagged error message. The global
101 * MAKE variable must have been defined. This
102 * takes a format string and 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 static void purge_cached_realpaths(void);
187
188 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */
189 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */
190 char curdir[MAXPATHLEN + 1]; /* Startup directory */
191 char *progname; /* the program name */
192 char *makeDependfile;
193 pid_t myPid;
194 int makelevel;
195
196 Boolean forceJobs = FALSE;
197
198 extern Lst parseIncPath;
199
200 /*
201 * For compatibility with the POSIX version of MAKEFLAGS that includes
202 * all the options with out -, convert flags to -f -l -a -g -s.
203 */
204 static char *
205 explode(const char *flags)
206 {
207 size_t len;
208 char *nf, *st;
209 const char *f;
210
211 if (flags == NULL)
212 return NULL;
213
214 for (f = flags; *f; f++)
215 if (!isalpha((unsigned char)*f))
216 break;
217
218 if (*f)
219 return bmake_strdup(flags);
220
221 len = strlen(flags);
222 st = nf = bmake_malloc(len * 3 + 1);
223 while (*flags) {
224 *nf++ = '-';
225 *nf++ = *flags++;
226 *nf++ = ' ';
227 }
228 *nf = '\0';
229 return st;
230 }
231
232 static void
233 parse_debug_options(const char *argvalue)
234 {
235 const char *modules;
236 const char *mode;
237 char *fname;
238 int len;
239
240 for (modules = argvalue; *modules; ++modules) {
241 switch (*modules) {
242 case 'A':
243 debug = ~0;
244 break;
245 case 'a':
246 debug |= DEBUG_ARCH;
247 break;
248 case 'C':
249 debug |= DEBUG_CWD;
250 break;
251 case 'c':
252 debug |= DEBUG_COND;
253 break;
254 case 'd':
255 debug |= DEBUG_DIR;
256 break;
257 case 'e':
258 debug |= DEBUG_ERROR;
259 break;
260 case 'f':
261 debug |= DEBUG_FOR;
262 break;
263 case 'g':
264 if (modules[1] == '1') {
265 debug |= DEBUG_GRAPH1;
266 ++modules;
267 }
268 else if (modules[1] == '2') {
269 debug |= DEBUG_GRAPH2;
270 ++modules;
271 }
272 else if (modules[1] == '3') {
273 debug |= DEBUG_GRAPH3;
274 ++modules;
275 }
276 break;
277 case 'j':
278 debug |= DEBUG_JOB;
279 break;
280 case 'l':
281 debug |= DEBUG_LOUD;
282 break;
283 case 'M':
284 debug |= DEBUG_META;
285 break;
286 case 'm':
287 debug |= DEBUG_MAKE;
288 break;
289 case 'n':
290 debug |= DEBUG_SCRIPT;
291 break;
292 case 'p':
293 debug |= DEBUG_PARSE;
294 break;
295 case 's':
296 debug |= DEBUG_SUFF;
297 break;
298 case 't':
299 debug |= DEBUG_TARG;
300 break;
301 case 'V':
302 debugVflag = TRUE;
303 break;
304 case 'v':
305 debug |= DEBUG_VAR;
306 break;
307 case 'x':
308 debug |= DEBUG_SHELL;
309 break;
310 case 'F':
311 if (debug_file != stdout && debug_file != stderr)
312 fclose(debug_file);
313 if (*++modules == '+') {
314 modules++;
315 mode = "a";
316 } else
317 mode = "w";
318 if (strcmp(modules, "stdout") == 0) {
319 debug_file = stdout;
320 goto debug_setbuf;
321 }
322 if (strcmp(modules, "stderr") == 0) {
323 debug_file = stderr;
324 goto debug_setbuf;
325 }
326 len = strlen(modules);
327 fname = bmake_malloc(len + 20);
328 memcpy(fname, modules, len + 1);
329 /* Let the filename be modified by the pid */
330 if (strcmp(fname + len - 3, ".%d") == 0)
331 snprintf(fname + len - 2, 20, "%d", getpid());
332 debug_file = fopen(fname, mode);
333 if (!debug_file) {
334 fprintf(stderr, "Cannot open debug file %s\n",
335 fname);
336 usage();
337 }
338 free(fname);
339 goto debug_setbuf;
340 default:
341 (void)fprintf(stderr,
342 "%s: illegal argument to d option -- %c\n",
343 progname, *modules);
344 usage();
345 }
346 }
347 debug_setbuf:
348 /*
349 * Make the debug_file unbuffered, and make
350 * stdout line buffered (unless debugfile == stdout).
351 */
352 setvbuf(debug_file, NULL, _IONBF, 0);
353 if (debug_file != stdout) {
354 setvbuf(stdout, NULL, _IOLBF, 0);
355 }
356 }
357
358 /*-
359 * MainParseArgs --
360 * Parse a given argument vector. Called from main() and from
361 * Main_ParseArgLine() when the .MAKEFLAGS target is used.
362 *
363 * XXX: Deal with command line overriding .MAKEFLAGS in makefile
364 *
365 * Results:
366 * None
367 *
368 * Side Effects:
369 * Various global and local flags will be set depending on the flags
370 * given
371 */
372 static void
373 MainParseArgs(int argc, char **argv)
374 {
375 char *p;
376 int c = '?';
377 int arginc;
378 char *argvalue;
379 const char *getopt_def;
380 struct stat sa, sb;
381 char *optscan;
382 Boolean inOption, dashDash = FALSE;
383 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */
384
385 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw"
386 /* Can't actually use getopt(3) because rescanning is not portable */
387
388 getopt_def = OPTFLAGS;
389 rearg:
390 inOption = FALSE;
391 optscan = NULL;
392 while(argc > 1) {
393 char *getopt_spec;
394 if(!inOption)
395 optscan = argv[1];
396 c = *optscan++;
397 arginc = 0;
398 if(inOption) {
399 if(c == '\0') {
400 ++argv;
401 --argc;
402 inOption = FALSE;
403 continue;
404 }
405 } else {
406 if (c != '-' || dashDash)
407 break;
408 inOption = TRUE;
409 c = *optscan++;
410 }
411 /* '-' found at some earlier point */
412 getopt_spec = strchr(getopt_def, c);
413 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') {
414 /* -<something> found, and <something> should have an arg */
415 inOption = FALSE;
416 arginc = 1;
417 argvalue = optscan;
418 if(*argvalue == '\0') {
419 if (argc < 3)
420 goto noarg;
421 argvalue = argv[2];
422 arginc = 2;
423 }
424 } else {
425 argvalue = NULL;
426 }
427 switch(c) {
428 case '\0':
429 arginc = 1;
430 inOption = FALSE;
431 break;
432 case 'B':
433 compatMake = TRUE;
434 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL);
435 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0);
436 break;
437 case 'C':
438 if (chdir(argvalue) == -1) {
439 (void)fprintf(stderr,
440 "%s: chdir %s: %s\n",
441 progname, argvalue,
442 strerror(errno));
443 exit(1);
444 }
445 if (getcwd(curdir, MAXPATHLEN) == NULL) {
446 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno));
447 exit(2);
448 }
449 if (argvalue[0] == '/' &&
450 stat(argvalue, &sa) != -1 &&
451 stat(curdir, &sb) != -1 &&
452 sa.st_ino == sb.st_ino &&
453 sa.st_dev == sb.st_dev)
454 strncpy(curdir, argvalue, MAXPATHLEN);
455 ignorePWD = TRUE;
456 break;
457 case 'D':
458 if (argvalue == NULL || argvalue[0] == 0) goto noarg;
459 Var_Set(argvalue, "1", VAR_GLOBAL, 0);
460 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL);
461 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
462 break;
463 case 'I':
464 if (argvalue == NULL) goto noarg;
465 Parse_AddIncludeDir(argvalue);
466 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL);
467 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
468 break;
469 case 'J':
470 if (argvalue == NULL) goto noarg;
471 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) {
472 (void)fprintf(stderr,
473 "%s: internal error -- J option malformed (%s)\n",
474 progname, argvalue);
475 usage();
476 }
477 if ((fcntl(jp_0, F_GETFD, 0) < 0) ||
478 (fcntl(jp_1, F_GETFD, 0) < 0)) {
479 #if 0
480 (void)fprintf(stderr,
481 "%s: ###### warning -- J descriptors were closed!\n",
482 progname);
483 exit(2);
484 #endif
485 jp_0 = -1;
486 jp_1 = -1;
487 compatMake = TRUE;
488 } else {
489 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL);
490 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
491 jobServer = TRUE;
492 }
493 break;
494 case 'N':
495 noExecute = TRUE;
496 noRecursiveExecute = TRUE;
497 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL);
498 break;
499 case 'S':
500 keepgoing = FALSE;
501 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL);
502 break;
503 case 'T':
504 if (argvalue == NULL) goto noarg;
505 tracefile = bmake_strdup(argvalue);
506 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL);
507 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
508 break;
509 case 'V':
510 if (argvalue == NULL) goto noarg;
511 printVars = TRUE;
512 (void)Lst_AtEnd(variables, argvalue);
513 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL);
514 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
515 break;
516 case 'W':
517 parseWarnFatal = TRUE;
518 break;
519 case 'X':
520 varNoExportEnv = TRUE;
521 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL);
522 break;
523 case 'd':
524 if (argvalue == NULL) goto noarg;
525 /* If '-d-opts' don't pass to children */
526 if (argvalue[0] == '-')
527 argvalue++;
528 else {
529 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL);
530 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
531 }
532 parse_debug_options(argvalue);
533 break;
534 case 'e':
535 checkEnvFirst = TRUE;
536 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL);
537 break;
538 case 'f':
539 if (argvalue == NULL) goto noarg;
540 (void)Lst_AtEnd(makefiles, argvalue);
541 break;
542 case 'i':
543 ignoreErrors = TRUE;
544 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL);
545 break;
546 case 'j':
547 if (argvalue == NULL) goto noarg;
548 forceJobs = TRUE;
549 maxJobs = strtol(argvalue, &p, 0);
550 if (*p != '\0' || maxJobs < 1) {
551 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n",
552 progname);
553 exit(1);
554 }
555 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL);
556 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
557 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0);
558 maxJobTokens = maxJobs;
559 break;
560 case 'k':
561 keepgoing = TRUE;
562 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL);
563 break;
564 case 'm':
565 if (argvalue == NULL) goto noarg;
566 /* look for magic parent directory search string */
567 if (strncmp(".../", argvalue, 4) == 0) {
568 if (!Dir_FindHereOrAbove(curdir, argvalue+4,
569 found_path, sizeof(found_path)))
570 break; /* nothing doing */
571 (void)Dir_AddDir(sysIncPath, found_path);
572 } else {
573 (void)Dir_AddDir(sysIncPath, argvalue);
574 }
575 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL);
576 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
577 break;
578 case 'n':
579 noExecute = TRUE;
580 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL);
581 break;
582 case 'q':
583 queryFlag = TRUE;
584 /* Kind of nonsensical, wot? */
585 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL);
586 break;
587 case 'r':
588 noBuiltins = TRUE;
589 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL);
590 break;
591 case 's':
592 beSilent = TRUE;
593 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL);
594 break;
595 case 't':
596 touchFlag = TRUE;
597 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL);
598 break;
599 case 'w':
600 enterFlag = TRUE;
601 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL);
602 break;
603 case '-':
604 dashDash = TRUE;
605 break;
606 default:
607 case '?':
608 usage();
609 }
610 argv += arginc;
611 argc -= arginc;
612 }
613
614 oldVars = TRUE;
615
616 /*
617 * See if the rest of the arguments are variable assignments and
618 * perform them if so. Else take them to be targets and stuff them
619 * on the end of the "create" list.
620 */
621 for (; argc > 1; ++argv, --argc)
622 if (Parse_IsVar(argv[1])) {
623 Parse_DoVar(argv[1], VAR_CMD);
624 } else {
625 if (!*argv[1])
626 Punt("illegal (null) argument.");
627 if (*argv[1] == '-' && !dashDash)
628 goto rearg;
629 (void)Lst_AtEnd(create, bmake_strdup(argv[1]));
630 }
631
632 return;
633 noarg:
634 (void)fprintf(stderr, "%s: option requires an argument -- %c\n",
635 progname, c);
636 usage();
637 }
638
639 /*-
640 * Main_ParseArgLine --
641 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target
642 * is encountered and by main() when reading the .MAKEFLAGS envariable.
643 * Takes a line of arguments and breaks it into its
644 * component words and passes those words and the number of them to the
645 * MainParseArgs function.
646 * The line should have all its leading whitespace removed.
647 *
648 * Input:
649 * line Line to fracture
650 *
651 * Results:
652 * None
653 *
654 * Side Effects:
655 * Only those that come from the various arguments.
656 */
657 void
658 Main_ParseArgLine(const char *line)
659 {
660 char **argv; /* Manufactured argument vector */
661 int argc; /* Number of arguments in argv */
662 char *args; /* Space used by the args */
663 char *buf, *p1;
664 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1);
665 size_t len;
666
667 if (line == NULL)
668 return;
669 for (; *line == ' '; ++line)
670 continue;
671 if (!*line)
672 return;
673
674 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2);
675 (void)snprintf(buf, len, "%s %s", argv0, line);
676 free(p1);
677
678 argv = brk_string(buf, &argc, TRUE, &args);
679 if (argv == NULL) {
680 Error("Unterminated quoted string [%s]", buf);
681 free(buf);
682 return;
683 }
684 free(buf);
685 MainParseArgs(argc, argv);
686
687 free(args);
688 free(argv);
689 }
690
691 Boolean
692 Main_SetObjdir(const char *fmt, ...)
693 {
694 struct stat sb;
695 char *path;
696 char buf[MAXPATHLEN + 1];
697 Boolean rc = FALSE;
698 va_list ap;
699
700 va_start(ap, fmt);
701 vsnprintf(path = buf, MAXPATHLEN, fmt, ap);
702 va_end(ap);
703
704 if (path[0] != '/') {
705 char buf2[MAXPATHLEN + 1];
706
707 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path);
708 path = buf2;
709 }
710
711 /* look for the directory and try to chdir there */
712 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) {
713 if (chdir(path)) {
714 (void)fprintf(stderr, "make warning: %s: %s.\n",
715 path, strerror(errno));
716 } else {
717 strncpy(objdir, path, MAXPATHLEN);
718 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0);
719 setenv("PWD", objdir, 1);
720 Dir_InitDot();
721 purge_cached_realpaths();
722 rc = TRUE;
723 if (enterFlag && strcmp(objdir, curdir) != 0)
724 enterFlagObj = TRUE;
725 }
726 }
727
728 return rc;
729 }
730
731 static Boolean
732 Main_SetVarObjdir(const char *var, const char *suffix)
733 {
734 char *p, *path, *xpath;
735
736 if ((path = Var_Value(var, VAR_CMD, &p)) == NULL)
737 return FALSE;
738
739 /* expand variable substitutions */
740 if (strchr(path, '$') != 0)
741 xpath = Var_Subst(NULL, path, VAR_GLOBAL, VARF_WANTRES);
742 else
743 xpath = path;
744
745 (void)Main_SetObjdir("%s%s", xpath, suffix);
746
747 if (xpath != path)
748 free(xpath);
749 free(p);
750 return TRUE;
751 }
752
753 /*-
754 * ReadAllMakefiles --
755 * wrapper around ReadMakefile() to read all.
756 *
757 * Results:
758 * TRUE if ok, FALSE on error
759 */
760 static int
761 ReadAllMakefiles(const void *p, const void *q)
762 {
763 return (ReadMakefile(p, q) == 0);
764 }
765
766 int
767 str2Lst_Append(Lst lp, char *str, const char *sep)
768 {
769 char *cp;
770 int n;
771
772 if (!sep)
773 sep = " \t";
774
775 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) {
776 (void)Lst_AtEnd(lp, cp);
777 n++;
778 }
779 return (n);
780 }
781
782 #ifdef SIGINFO
783 /*ARGSUSED*/
784 static void
785 siginfo(int signo MAKE_ATTR_UNUSED)
786 {
787 char dir[MAXPATHLEN];
788 char str[2 * MAXPATHLEN];
789 int len;
790 if (getcwd(dir, sizeof(dir)) == NULL)
791 return;
792 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir);
793 if (len > 0)
794 (void)write(STDERR_FILENO, str, (size_t)len);
795 }
796 #endif
797
798 /*
799 * Allow makefiles some control over the mode we run in.
800 */
801 void
802 MakeMode(const char *mode)
803 {
804 char *mp = NULL;
805
806 if (!mode)
807 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}",
808 VAR_GLOBAL, VARF_WANTRES);
809
810 if (mode && *mode) {
811 if (strstr(mode, "compat")) {
812 compatMake = TRUE;
813 forceJobs = FALSE;
814 }
815 #if USE_META
816 if (strstr(mode, "meta"))
817 meta_mode_init(mode);
818 #endif
819 }
820
821 free(mp);
822 }
823
824 /*-
825 * main --
826 * The main function, for obvious reasons. Initializes variables
827 * and a few modules, then parses the arguments give it in the
828 * environment and on the command line. Reads the system makefile
829 * followed by either Makefile, makefile or the file given by the
830 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the
831 * flags it has received by then uses either the Make or the Compat
832 * module to create the initial list of targets.
833 *
834 * Results:
835 * If -q was given, exits -1 if anything was out-of-date. Else it exits
836 * 0.
837 *
838 * Side Effects:
839 * The program exits when done. Targets are created. etc. etc. etc.
840 */
841 int
842 main(int argc, char **argv)
843 {
844 Lst targs; /* target nodes to create -- passed to Make_Init */
845 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */
846 struct stat sb, sa;
847 char *p1, *path;
848 char mdpath[MAXPATHLEN];
849 const char *machine = getenv("MACHINE");
850 const char *machine_arch = getenv("MACHINE_ARCH");
851 char *syspath = getenv("MAKESYSPATH");
852 Lst sysMkPath; /* Path of sys.mk */
853 char *cp = NULL, *start;
854 /* avoid faults on read-only strings */
855 static char defsyspath[] = _PATH_DEFSYSPATH;
856 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */
857 struct timeval rightnow; /* to initialize random seed */
858 struct utsname utsname;
859
860 /* default to writing debug to stderr */
861 debug_file = stderr;
862
863 #ifdef SIGINFO
864 (void)bmake_signal(SIGINFO, siginfo);
865 #endif
866 /*
867 * Set the seed to produce a different random sequence
868 * on each program execution.
869 */
870 gettimeofday(&rightnow, NULL);
871 srandom(rightnow.tv_sec + rightnow.tv_usec);
872
873 if ((progname = strrchr(argv[0], '/')) != NULL)
874 progname++;
875 else
876 progname = argv[0];
877 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE))
878 /*
879 * get rid of resource limit on file descriptors
880 */
881 {
882 struct rlimit rl;
883 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 &&
884 rl.rlim_cur != rl.rlim_max) {
885 rl.rlim_cur = rl.rlim_max;
886 (void)setrlimit(RLIMIT_NOFILE, &rl);
887 }
888 }
889 #endif
890
891 if (uname(&utsname) == -1) {
892 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname,
893 strerror(errno));
894 exit(2);
895 }
896
897 /*
898 * Get the name of this type of MACHINE from utsname
899 * so we can share an executable for similar machines.
900 * (i.e. m68k: amiga hp300, mac68k, sun3, ...)
901 *
902 * Note that both MACHINE and MACHINE_ARCH are decided at
903 * run-time.
904 */
905 if (!machine) {
906 #ifdef MAKE_NATIVE
907 machine = utsname.machine;
908 #else
909 #ifdef MAKE_MACHINE
910 machine = MAKE_MACHINE;
911 #else
912 machine = "unknown";
913 #endif
914 #endif
915 }
916
917 if (!machine_arch) {
918 #ifdef MAKE_NATIVE
919 static char machine_arch_buf[sizeof(utsname.machine)];
920 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH };
921 size_t len = sizeof(machine_arch_buf);
922
923 if (sysctl(mib, __arraycount(mib), machine_arch_buf,
924 &len, NULL, 0) < 0) {
925 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname,
926 strerror(errno));
927 exit(2);
928 }
929
930 machine_arch = machine_arch_buf;
931 #else
932 #ifndef MACHINE_ARCH
933 #ifdef MAKE_MACHINE_ARCH
934 machine_arch = MAKE_MACHINE_ARCH;
935 #else
936 machine_arch = "unknown";
937 #endif
938 #else
939 machine_arch = MACHINE_ARCH;
940 #endif
941 #endif
942 }
943
944 myPid = getpid(); /* remember this for vFork() */
945
946 /*
947 * Just in case MAKEOBJDIR wants us to do something tricky.
948 */
949 Var_Init(); /* Initialize the lists of variables for
950 * parsing arguments */
951 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0);
952 Var_Set("MACHINE", machine, VAR_GLOBAL, 0);
953 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0);
954 #ifdef MAKE_VERSION
955 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0);
956 #endif
957 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */
958 /*
959 * This is the traditional preference for makefiles.
960 */
961 #ifndef MAKEFILE_PREFERENCE_LIST
962 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile"
963 #endif
964 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST,
965 VAR_GLOBAL, 0);
966 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0);
967
968 create = Lst_Init(FALSE);
969 makefiles = Lst_Init(FALSE);
970 printVars = FALSE;
971 debugVflag = FALSE;
972 variables = Lst_Init(FALSE);
973 beSilent = FALSE; /* Print commands as executed */
974 ignoreErrors = FALSE; /* Pay attention to non-zero returns */
975 noExecute = FALSE; /* Execute all commands */
976 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */
977 keepgoing = FALSE; /* Stop on error */
978 allPrecious = FALSE; /* Remove targets when interrupted */
979 deleteOnError = FALSE; /* Historical default behavior */
980 queryFlag = FALSE; /* This is not just a check-run */
981 noBuiltins = FALSE; /* Read the built-in rules */
982 touchFlag = FALSE; /* Actually update targets */
983 debug = 0; /* No debug verbosity, please. */
984 jobsRunning = FALSE;
985
986 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */
987 maxJobTokens = maxJobs;
988 compatMake = FALSE; /* No compat mode */
989 ignorePWD = FALSE;
990
991 /*
992 * Initialize the parsing, directory and variable modules to prepare
993 * for the reading of inclusion paths and variable settings on the
994 * command line
995 */
996
997 /*
998 * Initialize various variables.
999 * MAKE also gets this name, for compatibility
1000 * .MAKEFLAGS gets set to the empty string just in case.
1001 * MFLAGS also gets initialized empty, for compatibility.
1002 */
1003 Parse_Init();
1004 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) {
1005 /*
1006 * Leave alone if it is an absolute path, or if it does
1007 * not contain a '/' in which case we need to find it in
1008 * the path, like execvp(3) and the shells do.
1009 */
1010 p1 = argv[0];
1011 } else {
1012 /*
1013 * A relative path, canonicalize it.
1014 */
1015 p1 = cached_realpath(argv[0], mdpath);
1016 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) {
1017 p1 = argv[0]; /* realpath failed */
1018 }
1019 }
1020 Var_Set("MAKE", p1, VAR_GLOBAL, 0);
1021 Var_Set(".MAKE", p1, VAR_GLOBAL, 0);
1022 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0);
1023 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0);
1024 Var_Set("MFLAGS", "", VAR_GLOBAL, 0);
1025 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0);
1026 /* some makefiles need to know this */
1027 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0);
1028
1029 /*
1030 * Set some other useful macros
1031 */
1032 {
1033 char tmp[64], *ep;
1034
1035 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0;
1036 if (makelevel < 0)
1037 makelevel = 0;
1038 snprintf(tmp, sizeof(tmp), "%d", makelevel);
1039 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0);
1040 snprintf(tmp, sizeof(tmp), "%u", myPid);
1041 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0);
1042 snprintf(tmp, sizeof(tmp), "%u", getppid());
1043 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0);
1044 }
1045 if (makelevel > 0) {
1046 char pn[1024];
1047 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel);
1048 progname = bmake_strdup(pn);
1049 }
1050
1051 #ifdef USE_META
1052 meta_init();
1053 #endif
1054 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */
1055
1056 /*
1057 * First snag any flags out of the MAKE environment variable.
1058 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's
1059 * in a different format).
1060 */
1061 #ifdef POSIX
1062 p1 = explode(getenv("MAKEFLAGS"));
1063 Main_ParseArgLine(p1);
1064 free(p1);
1065 #else
1066 Main_ParseArgLine(getenv("MAKE"));
1067 #endif
1068
1069 /*
1070 * Find where we are (now).
1071 * We take care of PWD for the automounter below...
1072 */
1073 if (getcwd(curdir, MAXPATHLEN) == NULL) {
1074 (void)fprintf(stderr, "%s: getcwd: %s.\n",
1075 progname, strerror(errno));
1076 exit(2);
1077 }
1078
1079 MainParseArgs(argc, argv);
1080
1081 if (enterFlag)
1082 printf("%s: Entering directory `%s'\n", progname, curdir);
1083
1084 /*
1085 * Verify that cwd is sane.
1086 */
1087 if (stat(curdir, &sa) == -1) {
1088 (void)fprintf(stderr, "%s: %s: %s.\n",
1089 progname, curdir, strerror(errno));
1090 exit(2);
1091 }
1092
1093 /*
1094 * All this code is so that we know where we are when we start up
1095 * on a different machine with pmake.
1096 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX
1097 * since the value of curdir can vary depending on how we got
1098 * here. Ie sitting at a shell prompt (shell that provides $PWD)
1099 * or via subdir.mk in which case its likely a shell which does
1100 * not provide it.
1101 * So, to stop it breaking this case only, we ignore PWD if
1102 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform.
1103 */
1104 #ifndef NO_PWD_OVERRIDE
1105 if (!ignorePWD) {
1106 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL;
1107
1108 if ((pwd = getenv("PWD")) != NULL &&
1109 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) {
1110 const char *makeobjdir = Var_Value("MAKEOBJDIR",
1111 VAR_CMD, &ptmp2);
1112
1113 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) {
1114 if (stat(pwd, &sb) == 0 &&
1115 sa.st_ino == sb.st_ino &&
1116 sa.st_dev == sb.st_dev)
1117 (void)strncpy(curdir, pwd, MAXPATHLEN);
1118 }
1119 }
1120 free(ptmp1);
1121 free(ptmp2);
1122 }
1123 #endif
1124 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0);
1125
1126 /*
1127 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that,
1128 * MAKEOBJDIR is set in the environment, try only that value
1129 * and fall back to .CURDIR if it does not exist.
1130 *
1131 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE,
1132 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none
1133 * of these paths exist, just use .CURDIR.
1134 */
1135 Dir_Init(curdir);
1136 (void)Main_SetObjdir("%s", curdir);
1137
1138 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) &&
1139 !Main_SetVarObjdir("MAKEOBJDIR", "") &&
1140 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) &&
1141 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) &&
1142 !Main_SetObjdir("%s", _PATH_OBJDIR))
1143 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir);
1144
1145 /*
1146 * Initialize archive, target and suffix modules in preparation for
1147 * parsing the makefile(s)
1148 */
1149 Arch_Init();
1150 Targ_Init();
1151 Suff_Init();
1152 Trace_Init(tracefile);
1153
1154 DEFAULT = NULL;
1155 (void)time(&now);
1156
1157 Trace_Log(MAKESTART, NULL);
1158
1159 /*
1160 * Set up the .TARGETS variable to contain the list of targets to be
1161 * created. If none specified, make the variable empty -- the parser
1162 * will fill the thing in with the default or .MAIN target.
1163 */
1164 if (!Lst_IsEmpty(create)) {
1165 LstNode ln;
1166
1167 for (ln = Lst_First(create); ln != NULL;
1168 ln = Lst_Succ(ln)) {
1169 char *name = (char *)Lst_Datum(ln);
1170
1171 Var_Append(".TARGETS", name, VAR_GLOBAL);
1172 }
1173 } else
1174 Var_Set(".TARGETS", "", VAR_GLOBAL, 0);
1175
1176
1177 /*
1178 * If no user-supplied system path was given (through the -m option)
1179 * add the directories from the DEFSYSPATH (more than one may be given
1180 * as dir1:...:dirn) to the system include path.
1181 */
1182 if (syspath == NULL || *syspath == '\0')
1183 syspath = defsyspath;
1184 else
1185 syspath = bmake_strdup(syspath);
1186
1187 for (start = syspath; *start != '\0'; start = cp) {
1188 for (cp = start; *cp != '\0' && *cp != ':'; cp++)
1189 continue;
1190 if (*cp == ':') {
1191 *cp++ = '\0';
1192 }
1193 /* look for magic parent directory search string */
1194 if (strncmp(".../", start, 4) != 0) {
1195 (void)Dir_AddDir(defIncPath, start);
1196 } else {
1197 if (Dir_FindHereOrAbove(curdir, start+4,
1198 found_path, sizeof(found_path))) {
1199 (void)Dir_AddDir(defIncPath, found_path);
1200 }
1201 }
1202 }
1203 if (syspath != defsyspath)
1204 free(syspath);
1205
1206 /*
1207 * Read in the built-in rules first, followed by the specified
1208 * makefile, if it was (makefile != NULL), or the default
1209 * makefile and Makefile, in that order, if it wasn't.
1210 */
1211 if (!noBuiltins) {
1212 LstNode ln;
1213
1214 sysMkPath = Lst_Init(FALSE);
1215 Dir_Expand(_PATH_DEFSYSMK,
1216 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath,
1217 sysMkPath);
1218 if (Lst_IsEmpty(sysMkPath))
1219 Fatal("%s: no system rules (%s).", progname,
1220 _PATH_DEFSYSMK);
1221 ln = Lst_Find(sysMkPath, NULL, ReadMakefile);
1222 if (ln == NULL)
1223 Fatal("%s: cannot open %s.", progname,
1224 (char *)Lst_Datum(ln));
1225 }
1226
1227 if (!Lst_IsEmpty(makefiles)) {
1228 LstNode ln;
1229
1230 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles);
1231 if (ln != NULL)
1232 Fatal("%s: cannot open %s.", progname,
1233 (char *)Lst_Datum(ln));
1234 } else {
1235 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}",
1236 VAR_CMD, VARF_WANTRES);
1237 if (p1) {
1238 (void)str2Lst_Append(makefiles, p1, NULL);
1239 (void)Lst_Find(makefiles, NULL, ReadMakefile);
1240 free(p1);
1241 }
1242 }
1243
1244 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */
1245 if (!noBuiltins || !printVars) {
1246 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}",
1247 VAR_CMD, VARF_WANTRES);
1248 doing_depend = TRUE;
1249 (void)ReadMakefile(makeDependfile, NULL);
1250 doing_depend = FALSE;
1251 }
1252
1253 if (enterFlagObj)
1254 printf("%s: Entering directory `%s'\n", progname, objdir);
1255
1256 MakeMode(NULL);
1257
1258 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL);
1259 free(p1);
1260
1261 if (!forceJobs && !compatMake &&
1262 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) {
1263 char *value;
1264 int n;
1265
1266 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES);
1267 n = strtol(value, NULL, 0);
1268 if (n < 1) {
1269 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n",
1270 progname);
1271 exit(1);
1272 }
1273 if (n != maxJobs) {
1274 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL);
1275 Var_Append(MAKEFLAGS, value, VAR_GLOBAL);
1276 }
1277 maxJobs = n;
1278 maxJobTokens = maxJobs;
1279 forceJobs = TRUE;
1280 free(value);
1281 }
1282
1283 /*
1284 * Be compatible if user did not specify -j and did not explicitly
1285 * turned compatibility on
1286 */
1287 if (!compatMake && !forceJobs) {
1288 compatMake = TRUE;
1289 }
1290
1291 if (!compatMake)
1292 Job_ServerStart(maxJobTokens, jp_0, jp_1);
1293 if (DEBUG(JOB))
1294 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n",
1295 jp_0, jp_1, maxJobs, maxJobTokens, compatMake);
1296
1297 if (!printVars)
1298 Main_ExportMAKEFLAGS(TRUE); /* initial export */
1299
1300
1301 /*
1302 * For compatibility, look at the directories in the VPATH variable
1303 * and add them to the search path, if the variable is defined. The
1304 * variable's value is in the same format as the PATH envariable, i.e.
1305 * <directory>:<directory>:<directory>...
1306 */
1307 if (Var_Exists("VPATH", VAR_CMD)) {
1308 char *vpath, savec;
1309 /*
1310 * GCC stores string constants in read-only memory, but
1311 * Var_Subst will want to write this thing, so store it
1312 * in an array
1313 */
1314 static char VPATH[] = "${VPATH}";
1315
1316 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES);
1317 path = vpath;
1318 do {
1319 /* skip to end of directory */
1320 for (cp = path; *cp != ':' && *cp != '\0'; cp++)
1321 continue;
1322 /* Save terminator character so know when to stop */
1323 savec = *cp;
1324 *cp = '\0';
1325 /* Add directory to search path */
1326 (void)Dir_AddDir(dirSearchPath, path);
1327 *cp = savec;
1328 path = cp + 1;
1329 } while (savec == ':');
1330 free(vpath);
1331 }
1332
1333 /*
1334 * Now that all search paths have been read for suffixes et al, it's
1335 * time to add the default search path to their lists...
1336 */
1337 Suff_DoPaths();
1338
1339 /*
1340 * Propagate attributes through :: dependency lists.
1341 */
1342 Targ_Propagate();
1343
1344 /* print the initial graph, if the user requested it */
1345 if (DEBUG(GRAPH1))
1346 Targ_PrintGraph(1);
1347
1348 /* print the values of any variables requested by the user */
1349 if (printVars) {
1350 LstNode ln;
1351 Boolean expandVars;
1352
1353 if (debugVflag)
1354 expandVars = FALSE;
1355 else
1356 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE);
1357 for (ln = Lst_First(variables); ln != NULL;
1358 ln = Lst_Succ(ln)) {
1359 char *var = (char *)Lst_Datum(ln);
1360 char *value;
1361
1362 if (strchr(var, '$')) {
1363 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL,
1364 VARF_WANTRES);
1365 } else if (expandVars) {
1366 char tmp[128];
1367
1368 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp)))
1369 Fatal("%s: variable name too big: %s",
1370 progname, var);
1371 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL,
1372 VARF_WANTRES);
1373 } else {
1374 value = Var_Value(var, VAR_GLOBAL, &p1);
1375 }
1376 printf("%s\n", value ? value : "");
1377 free(p1);
1378 }
1379 } else {
1380 /*
1381 * Have now read the entire graph and need to make a list of
1382 * targets to create. If none was given on the command line,
1383 * we consult the parsing module to find the main target(s)
1384 * to create.
1385 */
1386 if (Lst_IsEmpty(create))
1387 targs = Parse_MainName();
1388 else
1389 targs = Targ_FindList(create, TARG_CREATE);
1390
1391 if (!compatMake) {
1392 /*
1393 * Initialize job module before traversing the graph
1394 * now that any .BEGIN and .END targets have been read.
1395 * This is done only if the -q flag wasn't given
1396 * (to prevent the .BEGIN from being executed should
1397 * it exist).
1398 */
1399 if (!queryFlag) {
1400 Job_Init();
1401 jobsRunning = TRUE;
1402 }
1403
1404 /* Traverse the graph, checking on all the targets */
1405 outOfDate = Make_Run(targs);
1406 } else {
1407 /*
1408 * Compat_Init will take care of creating all the
1409 * targets as well as initializing the module.
1410 */
1411 Compat_Run(targs);
1412 }
1413 }
1414
1415 #ifdef CLEANUP
1416 Lst_Destroy(targs, NULL);
1417 Lst_Destroy(variables, NULL);
1418 Lst_Destroy(makefiles, NULL);
1419 Lst_Destroy(create, (FreeProc *)free);
1420 #endif
1421
1422 /* print the graph now it's been processed if the user requested it */
1423 if (DEBUG(GRAPH2))
1424 Targ_PrintGraph(2);
1425
1426 Trace_Log(MAKEEND, 0);
1427
1428 if (enterFlagObj)
1429 printf("%s: Leaving directory `%s'\n", progname, objdir);
1430 if (enterFlag)
1431 printf("%s: Leaving directory `%s'\n", progname, curdir);
1432
1433 #ifdef USE_META
1434 meta_finish();
1435 #endif
1436 Suff_End();
1437 Targ_End();
1438 Arch_End();
1439 Var_End();
1440 Parse_End();
1441 Dir_End();
1442 Job_End();
1443 Trace_End();
1444
1445 return outOfDate ? 1 : 0;
1446 }
1447
1448 /*-
1449 * ReadMakefile --
1450 * Open and parse the given makefile.
1451 *
1452 * Results:
1453 * 0 if ok. -1 if couldn't open file.
1454 *
1455 * Side Effects:
1456 * lots
1457 */
1458 static int
1459 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED)
1460 {
1461 const char *fname = p; /* makefile to read */
1462 int fd;
1463 size_t len = MAXPATHLEN;
1464 char *name, *path = bmake_malloc(len);
1465
1466 if (!strcmp(fname, "-")) {
1467 Parse_File(NULL /*stdin*/, -1);
1468 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0);
1469 } else {
1470 /* if we've chdir'd, rebuild the path name */
1471 if (strcmp(curdir, objdir) && *fname != '/') {
1472 size_t plen = strlen(curdir) + strlen(fname) + 2;
1473 if (len < plen)
1474 path = bmake_realloc(path, len = 2 * plen);
1475
1476 (void)snprintf(path, len, "%s/%s", curdir, fname);
1477 fd = open(path, O_RDONLY);
1478 if (fd != -1) {
1479 fname = path;
1480 goto found;
1481 }
1482
1483 /* If curdir failed, try objdir (ala .depend) */
1484 plen = strlen(objdir) + strlen(fname) + 2;
1485 if (len < plen)
1486 path = bmake_realloc(path, len = 2 * plen);
1487 (void)snprintf(path, len, "%s/%s", objdir, fname);
1488 fd = open(path, O_RDONLY);
1489 if (fd != -1) {
1490 fname = path;
1491 goto found;
1492 }
1493 } else {
1494 fd = open(fname, O_RDONLY);
1495 if (fd != -1)
1496 goto found;
1497 }
1498 /* look in -I and system include directories. */
1499 name = Dir_FindFile(fname, parseIncPath);
1500 if (!name)
1501 name = Dir_FindFile(fname,
1502 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
1503 if (!name || (fd = open(name, O_RDONLY)) == -1) {
1504 free(name);
1505 free(path);
1506 return(-1);
1507 }
1508 fname = name;
1509 /*
1510 * set the MAKEFILE variable desired by System V fans -- the
1511 * placement of the setting here means it gets set to the last
1512 * makefile specified, as it is set by SysV make.
1513 */
1514 found:
1515 if (!doing_depend)
1516 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0);
1517 Parse_File(fname, fd);
1518 }
1519 free(path);
1520 return(0);
1521 }
1522
1523
1524
1525 /*-
1526 * Cmd_Exec --
1527 * Execute the command in cmd, and return the output of that command
1528 * in a string.
1529 *
1530 * Results:
1531 * A string containing the output of the command, or the empty string
1532 * If errnum is not NULL, it contains the reason for the command failure
1533 *
1534 * Side Effects:
1535 * The string must be freed by the caller.
1536 */
1537 char *
1538 Cmd_Exec(const char *cmd, const char **errnum)
1539 {
1540 const char *args[4]; /* Args for invoking the shell */
1541 int fds[2]; /* Pipe streams */
1542 int cpid; /* Child PID */
1543 int pid; /* PID from wait() */
1544 char *res; /* result */
1545 int status; /* command exit status */
1546 Buffer buf; /* buffer to store the result */
1547 char *cp;
1548 int cc; /* bytes read, or -1 */
1549 int savederr; /* saved errno */
1550
1551
1552 *errnum = NULL;
1553
1554 if (!shellName)
1555 Shell_Init();
1556 /*
1557 * Set up arguments for shell
1558 */
1559 args[0] = shellName;
1560 args[1] = "-c";
1561 args[2] = cmd;
1562 args[3] = NULL;
1563
1564 /*
1565 * Open a pipe for fetching its output
1566 */
1567 if (pipe(fds) == -1) {
1568 *errnum = "Couldn't create pipe for \"%s\"";
1569 goto bad;
1570 }
1571
1572 /*
1573 * Fork
1574 */
1575 switch (cpid = vFork()) {
1576 case 0:
1577 /*
1578 * Close input side of pipe
1579 */
1580 (void)close(fds[0]);
1581
1582 /*
1583 * Duplicate the output stream to the shell's output, then
1584 * shut the extra thing down. Note we don't fetch the error
1585 * stream...why not? Why?
1586 */
1587 (void)dup2(fds[1], 1);
1588 (void)close(fds[1]);
1589
1590 Var_ExportVars();
1591
1592 (void)execv(shellPath, UNCONST(args));
1593 _exit(1);
1594 /*NOTREACHED*/
1595
1596 case -1:
1597 *errnum = "Couldn't exec \"%s\"";
1598 goto bad;
1599
1600 default:
1601 /*
1602 * No need for the writing half
1603 */
1604 (void)close(fds[1]);
1605
1606 savederr = 0;
1607 Buf_Init(&buf, 0);
1608
1609 do {
1610 char result[BUFSIZ];
1611 cc = read(fds[0], result, sizeof(result));
1612 if (cc > 0)
1613 Buf_AddBytes(&buf, cc, result);
1614 }
1615 while (cc > 0 || (cc == -1 && errno == EINTR));
1616 if (cc == -1)
1617 savederr = errno;
1618
1619 /*
1620 * Close the input side of the pipe.
1621 */
1622 (void)close(fds[0]);
1623
1624 /*
1625 * Wait for the process to exit.
1626 */
1627 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) {
1628 JobReapChild(pid, status, FALSE);
1629 continue;
1630 }
1631 cc = Buf_Size(&buf);
1632 res = Buf_Destroy(&buf, FALSE);
1633
1634 if (savederr != 0)
1635 *errnum = "Couldn't read shell's output for \"%s\"";
1636
1637 if (WIFSIGNALED(status))
1638 *errnum = "\"%s\" exited on a signal";
1639 else if (WEXITSTATUS(status) != 0)
1640 *errnum = "\"%s\" returned non-zero status";
1641
1642 /*
1643 * Null-terminate the result, convert newlines to spaces and
1644 * install it in the variable.
1645 */
1646 res[cc] = '\0';
1647 cp = &res[cc];
1648
1649 if (cc > 0 && *--cp == '\n') {
1650 /*
1651 * A final newline is just stripped
1652 */
1653 *cp-- = '\0';
1654 }
1655 while (cp >= res) {
1656 if (*cp == '\n') {
1657 *cp = ' ';
1658 }
1659 cp--;
1660 }
1661 break;
1662 }
1663 return res;
1664 bad:
1665 res = bmake_malloc(1);
1666 *res = '\0';
1667 return res;
1668 }
1669
1670 /*-
1671 * Error --
1672 * Print an error message given its format.
1673 *
1674 * Results:
1675 * None.
1676 *
1677 * Side Effects:
1678 * The message is printed.
1679 */
1680 /* VARARGS */
1681 void
1682 Error(const char *fmt, ...)
1683 {
1684 va_list ap;
1685 FILE *err_file;
1686
1687 err_file = debug_file;
1688 if (err_file == stdout)
1689 err_file = stderr;
1690 (void)fflush(stdout);
1691 for (;;) {
1692 va_start(ap, fmt);
1693 fprintf(err_file, "%s: ", progname);
1694 (void)vfprintf(err_file, fmt, ap);
1695 va_end(ap);
1696 (void)fprintf(err_file, "\n");
1697 (void)fflush(err_file);
1698 if (err_file == stderr)
1699 break;
1700 err_file = stderr;
1701 }
1702 }
1703
1704 /*-
1705 * Fatal --
1706 * Produce a Fatal error message. If jobs are running, waits for them
1707 * to finish.
1708 *
1709 * Results:
1710 * None
1711 *
1712 * Side Effects:
1713 * The program exits
1714 */
1715 /* VARARGS */
1716 void
1717 Fatal(const char *fmt, ...)
1718 {
1719 va_list ap;
1720
1721 va_start(ap, fmt);
1722 if (jobsRunning)
1723 Job_Wait();
1724
1725 (void)fflush(stdout);
1726 (void)vfprintf(stderr, fmt, ap);
1727 va_end(ap);
1728 (void)fprintf(stderr, "\n");
1729 (void)fflush(stderr);
1730
1731 PrintOnError(NULL, NULL);
1732
1733 if (DEBUG(GRAPH2) || DEBUG(GRAPH3))
1734 Targ_PrintGraph(2);
1735 Trace_Log(MAKEERROR, 0);
1736 exit(2); /* Not 1 so -q can distinguish error */
1737 }
1738
1739 /*
1740 * Punt --
1741 * Major exception once jobs are being created. Kills all jobs, prints
1742 * a message and exits.
1743 *
1744 * Results:
1745 * None
1746 *
1747 * Side Effects:
1748 * All children are killed indiscriminately and the program Lib_Exits
1749 */
1750 /* VARARGS */
1751 void
1752 Punt(const char *fmt, ...)
1753 {
1754 va_list ap;
1755
1756 va_start(ap, fmt);
1757 (void)fflush(stdout);
1758 (void)fprintf(stderr, "%s: ", progname);
1759 (void)vfprintf(stderr, fmt, ap);
1760 va_end(ap);
1761 (void)fprintf(stderr, "\n");
1762 (void)fflush(stderr);
1763
1764 PrintOnError(NULL, NULL);
1765
1766 DieHorribly();
1767 }
1768
1769 /*-
1770 * DieHorribly --
1771 * Exit without giving a message.
1772 *
1773 * Results:
1774 * None
1775 *
1776 * Side Effects:
1777 * A big one...
1778 */
1779 void
1780 DieHorribly(void)
1781 {
1782 if (jobsRunning)
1783 Job_AbortAll();
1784 if (DEBUG(GRAPH2))
1785 Targ_PrintGraph(2);
1786 Trace_Log(MAKEERROR, 0);
1787 exit(2); /* Not 1, so -q can distinguish error */
1788 }
1789
1790 /*
1791 * Finish --
1792 * Called when aborting due to errors in child shell to signal
1793 * abnormal exit.
1794 *
1795 * Results:
1796 * None
1797 *
1798 * Side Effects:
1799 * The program exits
1800 */
1801 void
1802 Finish(int errors)
1803 /* number of errors encountered in Make_Make */
1804 {
1805 Fatal("%d error%s", errors, errors == 1 ? "" : "s");
1806 }
1807
1808 /*
1809 * eunlink --
1810 * Remove a file carefully, avoiding directories.
1811 */
1812 int
1813 eunlink(const char *file)
1814 {
1815 struct stat st;
1816
1817 if (lstat(file, &st) == -1)
1818 return -1;
1819
1820 if (S_ISDIR(st.st_mode)) {
1821 errno = EISDIR;
1822 return -1;
1823 }
1824 return unlink(file);
1825 }
1826
1827 /*
1828 * execError --
1829 * Print why exec failed, avoiding stdio.
1830 */
1831 void
1832 execError(const char *af, const char *av)
1833 {
1834 #ifdef USE_IOVEC
1835 int i = 0;
1836 struct iovec iov[8];
1837 #define IOADD(s) \
1838 (void)(iov[i].iov_base = UNCONST(s), \
1839 iov[i].iov_len = strlen(iov[i].iov_base), \
1840 i++)
1841 #else
1842 #define IOADD(void)write(2, s, strlen(s))
1843 #endif
1844
1845 IOADD(progname);
1846 IOADD(": ");
1847 IOADD(af);
1848 IOADD("(");
1849 IOADD(av);
1850 IOADD(") failed (");
1851 IOADD(strerror(errno));
1852 IOADD(")\n");
1853
1854 #ifdef USE_IOVEC
1855 while (writev(2, iov, 8) == -1 && errno == EAGAIN)
1856 continue;
1857 #endif
1858 }
1859
1860 /*
1861 * usage --
1862 * exit with usage message
1863 */
1864 static void
1865 usage(void)
1866 {
1867 char *p;
1868 if ((p = strchr(progname, '[')) != NULL)
1869 *p = '\0';
1870
1871 (void)fprintf(stderr,
1872 "usage: %s [-BeikNnqrstWwX] \n\
1873 [-C directory] [-D variable] [-d flags] [-f makefile]\n\
1874 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\
1875 [-V variable] [variable=value] [target ...]\n", progname);
1876 exit(2);
1877 }
1878
1879 /*
1880 * realpath(3) can get expensive, cache results...
1881 */
1882 static GNode *cached_realpaths = NULL;
1883
1884 static GNode *
1885 get_cached_realpaths(void)
1886 {
1887
1888 if (!cached_realpaths) {
1889 cached_realpaths = Targ_NewGN("Realpath");
1890 #ifndef DEBUG_REALPATH_CACHE
1891 cached_realpaths->flags = INTERNAL;
1892 #endif
1893 }
1894
1895 return cached_realpaths;
1896 }
1897
1898 /* purge any relative paths */
1899 static void
1900 purge_cached_realpaths(void)
1901 {
1902 GNode *cache = get_cached_realpaths();
1903 Hash_Entry *he, *nhe;
1904 Hash_Search hs;
1905
1906 he = Hash_EnumFirst(&cache->context, &hs);
1907 while (he) {
1908 nhe = Hash_EnumNext(&hs);
1909 if (he->name[0] != '/') {
1910 if (DEBUG(DIR))
1911 fprintf(stderr, "cached_realpath: purging %s\n", he->name);
1912 Hash_DeleteEntry(&cache->context, he);
1913 }
1914 he = nhe;
1915 }
1916 }
1917
1918 char *
1919 cached_realpath(const char *pathname, char *resolved)
1920 {
1921 GNode *cache;
1922 char *rp, *cp;
1923
1924 if (!pathname || !pathname[0])
1925 return NULL;
1926
1927 cache = get_cached_realpaths();
1928
1929 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) {
1930 /* a hit */
1931 strncpy(resolved, rp, MAXPATHLEN);
1932 resolved[MAXPATHLEN - 1] = '\0';
1933 } else if ((rp = realpath(pathname, resolved)) != NULL) {
1934 Var_Set(pathname, rp, cache, 0);
1935 } /* else should we negative-cache? */
1936
1937 free(cp);
1938 return rp ? resolved : NULL;
1939 }
1940
1941 int
1942 PrintAddr(void *a, void *b)
1943 {
1944 printf("%lx ", (unsigned long) a);
1945 return b ? 0 : 0;
1946 }
1947
1948
1949 static int
1950 addErrorCMD(void *cmdp, void *gnp)
1951 {
1952 if (cmdp == NULL)
1953 return 1; /* stop */
1954 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL);
1955 return 0;
1956 }
1957
1958 void
1959 PrintOnError(GNode *gn, const char *s)
1960 {
1961 static GNode *en = NULL;
1962 char tmp[64];
1963 char *cp;
1964
1965 if (s)
1966 printf("%s", s);
1967
1968 printf("\n%s: stopped in %s\n", progname, curdir);
1969
1970 if (en)
1971 return; /* we've been here! */
1972 if (gn) {
1973 /*
1974 * We can print this even if there is no .ERROR target.
1975 */
1976 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0);
1977 Var_Delete(".ERROR_CMD", VAR_GLOBAL);
1978 Lst_ForEach(gn->commands, addErrorCMD, gn);
1979 }
1980 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}",
1981 sizeof(tmp) - 1);
1982 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES);
1983 if (cp) {
1984 if (*cp)
1985 printf("%s", cp);
1986 free(cp);
1987 }
1988 fflush(stdout);
1989
1990 /*
1991 * Finally, see if there is a .ERROR target, and run it if so.
1992 */
1993 en = Targ_FindNode(".ERROR", TARG_NOCREATE);
1994 if (en) {
1995 en->type |= OP_SPECIAL;
1996 Compat_Make(en, en);
1997 }
1998 }
1999
2000 void
2001 Main_ExportMAKEFLAGS(Boolean first)
2002 {
2003 static int once = 1;
2004 char tmp[64];
2005 char *s;
2006
2007 if (once != first)
2008 return;
2009 once = 0;
2010
2011 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}",
2012 sizeof(tmp));
2013 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES);
2014 if (s && *s) {
2015 #ifdef POSIX
2016 setenv("MAKEFLAGS", s, 1);
2017 #else
2018 setenv("MAKE", s, 1);
2019 #endif
2020 }
2021 }
2022
2023 char *
2024 getTmpdir(void)
2025 {
2026 static char *tmpdir = NULL;
2027
2028 if (!tmpdir) {
2029 struct stat st;
2030
2031 /*
2032 * Honor $TMPDIR but only if it is valid.
2033 * Ensure it ends with /.
2034 */
2035 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL,
2036 VARF_WANTRES);
2037 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) {
2038 free(tmpdir);
2039 tmpdir = bmake_strdup(_PATH_TMP);
2040 }
2041 }
2042 return tmpdir;
2043 }
2044
2045 /*
2046 * Create and open a temp file using "pattern".
2047 * If "fnamep" is provided set it to a copy of the filename created.
2048 * Otherwise unlink the file once open.
2049 */
2050 int
2051 mkTempFile(const char *pattern, char **fnamep)
2052 {
2053 static char *tmpdir = NULL;
2054 char tfile[MAXPATHLEN];
2055 int fd;
2056
2057 if (!pattern)
2058 pattern = TMPPAT;
2059 if (!tmpdir)
2060 tmpdir = getTmpdir();
2061 if (pattern[0] == '/') {
2062 snprintf(tfile, sizeof(tfile), "%s", pattern);
2063 } else {
2064 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern);
2065 }
2066 if ((fd = mkstemp(tfile)) < 0)
2067 Punt("Could not create temporary file %s: %s", tfile, strerror(errno));
2068 if (fnamep) {
2069 *fnamep = bmake_strdup(tfile);
2070 } else {
2071 unlink(tfile); /* we just want the descriptor */
2072 }
2073 return fd;
2074 }
2075
2076 /*
2077 * Convert a string representation of a boolean.
2078 * Anything that looks like "No", "False", "Off", "0" etc,
2079 * is FALSE, otherwise TRUE.
2080 */
2081 Boolean
2082 s2Boolean(const char *s, Boolean bf)
2083 {
2084 if (s) {
2085 switch(*s) {
2086 case '\0': /* not set - the default wins */
2087 break;
2088 case '0':
2089 case 'F':
2090 case 'f':
2091 case 'N':
2092 case 'n':
2093 bf = FALSE;
2094 break;
2095 case 'O':
2096 case 'o':
2097 switch (s[1]) {
2098 case 'F':
2099 case 'f':
2100 bf = FALSE;
2101 break;
2102 default:
2103 bf = TRUE;
2104 break;
2105 }
2106 break;
2107 default:
2108 bf = TRUE;
2109 break;
2110 }
2111 }
2112 return (bf);
2113 }
2114
2115 /*
2116 * Return a Boolean based on setting of a knob.
2117 *
2118 * If the knob is not set, the supplied default is the return value.
2119 * If set, anything that looks or smells like "No", "False", "Off", "0" etc,
2120 * is FALSE, otherwise TRUE.
2121 */
2122 Boolean
2123 getBoolean(const char *name, Boolean bf)
2124 {
2125 char tmp[64];
2126 char *cp;
2127
2128 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) {
2129 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES);
2130
2131 if (cp) {
2132 bf = s2Boolean(cp, bf);
2133 free(cp);
2134 }
2135 }
2136 return (bf);
2137 }
2138