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
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 $
38 #include <sys/types.h>
42 #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[])
85 char linksrc[64], linkdest[MAXPATHLEN];
86 static const char *emus[] = { "linux" };
88 while ((ch = getopt(argc, argv, "d:gpr")) != -1)
92 strlcpy(destdir, optarg, sizeof(destdir));
94 errx(2, "directory already set");
103 no_config_clobber = FALSE;
115 if (freopen(PREFIX = *argv, "r", stdin) == NULL)
116 err(2, "%s", PREFIX);
118 if (*destdir != '\0') {
119 len = strlen(destdir);
120 while (len > 1 && destdir[len - 1] == '/')
121 destdir[--len] = '\0';
124 strlcpy(destdir, CDIR, sizeof(destdir));
125 strlcat(destdir, PREFIX, sizeof(destdir));
133 else if ((buf.st_mode & S_IFMT) != S_IFDIR) {
134 errx(2, "%s isn't a directory", p);
136 else if (!no_config_clobber) {
137 char tmp[strlen(p) + 8];
139 fprintf(stderr, "Removing old directory %s: ", p);
141 snprintf(tmp, sizeof(tmp), "rm -rf %s", p);
143 fprintf(stderr, "Failed!\n");
146 fprintf(stderr, "Done.\n");
154 if (platformname == NULL) {
155 printf("Specify platform architecture, e.g. 'platform pc32'\n");
158 if (machinename == NULL) {
159 printf("Specify machine architecture, e.g. 'machine i386'\n");
162 if (machinearchname == NULL) {
163 printf("Specify cpu architecture, e.g. 'machine_arch i386'\n");
169 * "machine" points into platform/<PLATFORM>/include
172 snprintf(linkdest, sizeof(linkdest), "../../platform/%s/include",
175 snprintf(linkdest, sizeof(linkdest), "%s/platform/%s/include",
176 srcdir, platformname);
177 symlink(linkdest, path("machine"));
180 * "machine_base" points into platform/<PLATFORM>
183 snprintf(linkdest, sizeof(linkdest), "../../platform/%s",
186 snprintf(linkdest, sizeof(linkdest), "%s/platform/%s",
187 srcdir, platformname);
188 symlink(linkdest, path("machine_base"));
191 * "cpu" points to cpu/<MACHINE_ARCH>/include
194 snprintf(linkdest, sizeof(linkdest),
195 "../../cpu/%s/include", machinearchname);
197 snprintf(linkdest, sizeof(linkdest),
198 "%s/cpu/%s/include", srcdir, machinearchname);
199 symlink(linkdest, path("cpu"));
202 * "cpu_base" points to cpu/<MACHINE_ARCH>
205 snprintf(linkdest, sizeof(linkdest), "../../cpu/%s",
208 snprintf(linkdest, sizeof(linkdest), "%s/cpu/%s",
209 srcdir, machinearchname);
210 symlink(linkdest, path("cpu_base"));
213 * XXX check directory structure for architecture subdirectories and
214 * create the symlinks automatically XXX
216 for (i = 0; i < sizeof(emus) / sizeof(emus[0]); ++i) {
218 snprintf(linkdest, sizeof(linkdest),
219 "../../emulation/%s/%s",
220 emus[i], machinearchname);
222 snprintf(linkdest, sizeof(linkdest),
223 "%s/emulation/%s/%s",
224 srcdir, emus[i], machinearchname);
226 snprintf(linksrc, sizeof(linksrc), "arch_%s", emus[i]);
227 symlink(linkdest, path(linksrc));
230 options(); /* make options .h files */
231 makefile(); /* build Makefile */
232 headers(); /* make a lot of .h files */
233 configfile(); /* put config file into kernel*/
234 printf("Kernel build directory is %s\n", p);
240 * determine the root of the kernel source tree
241 * and save that in srcdir.
247 if (realpath("..", srcdir) == NULL)
248 errx(2, "Unable to find root of source tree");
255 fprintf(stderr, "usage: config [-gpr] [-d destdir] sysname\n");
261 * returns EOF on end of file
262 * NULL on end of line
263 * pointer to the word otherwise
268 static char line[80];
274 while ((ch = getc(fp)) != EOF)
275 if (ch != ' ' && ch != '\t')
293 while ((ch = getc(fp)) != EOF) {
307 * like get_word but will accept something in double or single quotes
308 * (to allow embedded spaces).
311 get_quoted_word(FILE *fp)
313 static char line[256];
319 while ((ch = getc(fp)) != EOF)
320 if (ch != ' ' && ch != '\t')
337 if (ch == '"' || ch == '\'') {
340 while ((ch = getc(fp)) != EOF) {
345 printf("config: missing quote reading `%s'\n",
353 while ((ch = getc(fp)) != EOF) {
368 * prepend the path to a filename
371 path(const char *file)
375 cp = malloc((size_t)(strlen(destdir) + (file ? strlen(file) : 0) + 2));
391 fi = fopen(PREFIX, "r");
393 err(2, "%s", PREFIX);
394 fo = fopen(p = path("config.c.new"), "w");
397 fprintf(fo, "#include \"opt_config.h\"\n");
398 fprintf(fo, "#ifdef INCLUDE_CONFIG_FILE \n");
399 fprintf(fo, "/* Mark config as used, so gcc doesn't optimize it away. */\n");
400 fprintf(fo, "#include <sys/types.h>\n");
401 fprintf(fo, "__used\n");
402 fprintf(fo, "static const char config[] = \"\\\n");
403 fprintf(fo, "START CONFIG FILE %s\\n\\\n___", PREFIX);
404 while (EOF != (i = getc(fi))) {
406 fprintf(fo, "\\n\\\n___");
407 } else if (i == '\"') {
409 } else if (i == '\\') {
415 fprintf(fo, "\\n\\\nEND CONFIG FILE %s\\n\\\n", PREFIX);
416 fprintf(fo, "\";\n");
417 fprintf(fo, "\n#endif /* INCLUDE_CONFIG_FILE */\n");
420 moveifchanged(path("config.c.new"), path("config.c"));
425 * compare two files; rename if changed.
428 moveifchanged(const char *from_name, const char *to_name)
433 struct stat from_sb, to_sb;
438 if ((from_fd = open(from_name, O_RDONLY)) < 0)
439 err(EX_OSERR, "moveifchanged open(%s)", from_name);
441 if ((to_fd = open(to_name, O_RDONLY)) < 0)
444 if (!changed && fstat(from_fd, &from_sb) < 0)
445 err(EX_OSERR, "moveifchanged fstat(%s)", from_name);
447 if (!changed && fstat(to_fd, &to_sb) < 0)
448 err(EX_OSERR, "moveifchanged fstat(%s)", to_name);
450 if (!changed && from_sb.st_size != to_sb.st_size)
453 tsize = (size_t)from_sb.st_size;
456 p = mmap(NULL, tsize, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
458 #define MAP_FAILED ((caddr_t)-1)
461 err(EX_OSERR, "mmap %s", from_name);
462 q = mmap(NULL, tsize, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
464 err(EX_OSERR, "mmap %s", to_name);
466 changed = memcmp(p, q, tsize);
471 if (rename(from_name, to_name) < 0)
472 err(EX_OSERR, "rename(%s, %s)", from_name, to_name);
474 if (unlink(from_name) < 0)
475 err(EX_OSERR, "unlink(%s)", from_name);