2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)main.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.sbin/config/main.c,v 1.37.2.3 2001/06/13 00:25:53 cg Exp $
36 * $DragonFly: src/usr.sbin/config/main.c,v 1.12 2004/03/08 03:24:27 dillon Exp $
39 #include <sys/types.h>
43 #include <sys/param.h>
60 #define CDIR "../../compile/"
63 char destdir[MAXPATHLEN];
64 char srcdir[MAXPATHLEN];
66 static int no_config_clobber = TRUE;
70 static void configfile(void);
71 static void get_srcdir(void);
72 static void usage(void);
75 * Config builds a set of files for building a UNIX
76 * system given a description of the desired system.
79 main(int argc, char *argv[])
84 char linksrc[64], linkdest[MAXPATHLEN];
85 static char *emus[] = { "linux", "svr4" };
87 while ((ch = getopt(argc, argv, "d:gprn")) != -1)
91 strlcpy(destdir, optarg, sizeof(destdir));
93 errx(2, "directory already set");
102 /* no_config_clobber is now true by default, no-op */
104 "*** Using obsolete config option '-n' ***\n");
107 no_config_clobber = FALSE;
119 if (freopen(PREFIX = *argv, "r", stdin) == NULL)
120 err(2, "%s", PREFIX);
122 if (*destdir != '\0') {
123 len = strlen(destdir);
124 while (len > 1 && destdir[len - 1] == '/')
125 destdir[--len] = '\0';
128 strlcpy(destdir, CDIR, sizeof(destdir));
129 strlcat(destdir, PREFIX, sizeof(destdir));
132 p = path((char *)NULL);
137 else if ((buf.st_mode & S_IFMT) != S_IFDIR) {
138 errx(2, "%s isn't a directory", p);
140 else if (!no_config_clobber) {
141 char tmp[strlen(p) + 8];
143 fprintf(stderr, "Removing old directory %s: ", p);
145 snprintf(tmp, sizeof(tmp), "rm -rf %s", p);
147 fprintf(stderr, "Failed!\n");
150 fprintf(stderr, "Done.\n");
158 if (machinename == NULL) {
159 printf("Specify machine type, e.g. ``machine i386''\n");
165 * make symbolic links in compilation directory
166 * for "sys" (to make genassym.c work along with #include <sys/xxx>)
167 * and similarly for "machine".
170 snprintf(linkdest, sizeof(linkdest), "../../%s/include",
173 snprintf(linkdest, sizeof(linkdest), "%s/%s/include",
174 srcdir, machinename);
175 symlink(linkdest, path("machine"));
178 * XXX check directory structure for architecture subdirectories and
179 * create the symlinks automatically XXX
182 snprintf(linkdest, sizeof(linkdest),
183 "../../../../../net/i4b/include/%s",
186 snprintf(linkdest, sizeof(linkdest), "%s/net/i4b/include/%s",
187 srcdir, machinename);
188 mkdir(path("net"), 0755);
189 mkdir(path("net/i4b"), 0755);
190 mkdir(path("net/i4b/include"), 0755);
191 symlink(linkdest, path("net/i4b/include/machine"));
193 for (i = 0; i < sizeof(emus) / sizeof(emus[0]); ++i) {
195 snprintf(linkdest, sizeof(linkdest),
196 "../../emulation/%s/%s",
197 emus[i], machinename);
199 snprintf(linkdest, sizeof(linkdest),
200 "%s/emulation/%s/%s",
201 srcdir, emus[i], machinename);
203 snprintf(linksrc, sizeof(linksrc), "arch_%s", emus[i]);
204 symlink(linkdest, path(linksrc));
207 options(); /* make options .h files */
208 makefile(); /* build Makefile */
209 headers(); /* make a lot of .h files */
210 configfile(); /* put config file into kernel*/
211 printf("Kernel build directory is %s\n", p);
217 * determine the root of the kernel source tree
218 * and save that in srcdir.
224 if (realpath("../..", srcdir) == NULL)
225 errx(2, "Unable to find root of source tree");
232 fprintf(stderr, "usage: config [-gpr] [-d destdir] sysname\n");
238 * returns EOF on end of file
239 * NULL on end of line
240 * pointer to the word otherwise
245 static char line[80];
251 while ((ch = getc(fp)) != EOF)
252 if (ch != ' ' && ch != '\t')
270 while ((ch = getc(fp)) != EOF) {
284 * like get_word but will accept something in double or single quotes
285 * (to allow embedded spaces).
288 get_quoted_word(FILE *fp)
290 static char line[256];
296 while ((ch = getc(fp)) != EOF)
297 if (ch != ' ' && ch != '\t')
314 if (ch == '"' || ch == '\'') {
317 while ((ch = getc(fp)) != EOF) {
322 printf("config: missing quote reading `%s'\n",
330 while ((ch = getc(fp)) != EOF) {
345 * prepend the path to a filename
352 cp = malloc((size_t)(strlen(destdir) + (file ? strlen(file) : 0) + 2));
368 fi = fopen(PREFIX, "r");
370 err(2, "%s", PREFIX);
371 fo = fopen(p = path("config.c.new"), "w");
374 fprintf(fo, "#include \"opt_config.h\"\n");
375 fprintf(fo, "#ifdef INCLUDE_CONFIG_FILE \n");
376 fprintf(fo, "static const char config[] = \"\\\n");
377 fprintf(fo, "START CONFIG FILE %s\\n\\\n___", PREFIX);
378 while (EOF != (i = getc(fi))) {
380 fprintf(fo, "\\n\\\n___");
381 } else if (i == '\"') {
383 } else if (i == '\\') {
389 fprintf(fo, "\\n\\\nEND CONFIG FILE %s\\n\\\n", PREFIX);
390 fprintf(fo, "\";\n");
391 fprintf(fo, "\n#endif /* INCLUDE_CONFIG_FILE */\n");
394 moveifchanged(path("config.c.new"), path("config.c"));
399 * compare two files; rename if changed.
402 moveifchanged(const char *from_name, const char *to_name)
407 struct stat from_sb, to_sb;
412 if ((from_fd = open(from_name, O_RDONLY)) < 0)
413 err(EX_OSERR, "moveifchanged open(%s)", from_name);
415 if ((to_fd = open(to_name, O_RDONLY)) < 0)
418 if (!changed && fstat(from_fd, &from_sb) < 0)
419 err(EX_OSERR, "moveifchanged fstat(%s)", from_name);
421 if (!changed && fstat(to_fd, &to_sb) < 0)
422 err(EX_OSERR, "moveifchanged fstat(%s)", to_name);
424 if (!changed && from_sb.st_size != to_sb.st_size)
427 tsize = (size_t)from_sb.st_size;
430 p = mmap(NULL, tsize, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
432 #define MAP_FAILED ((caddr_t)-1)
435 err(EX_OSERR, "mmap %s", from_name);
436 q = mmap(NULL, tsize, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
438 err(EX_OSERR, "mmap %s", to_name);
440 changed = memcmp(p, q, tsize);
445 if (rename(from_name, to_name) < 0)
446 err(EX_OSERR, "rename(%s, %s)", from_name, to_name);
448 if (unlink(from_name) < 0)
449 err(EX_OSERR, "unlink(%s)", from_name);