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
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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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 1.24 2008/07/11 09:28:20 thomas Exp $
39 #include <sys/types.h>
43 #include <sys/param.h>
61 #define CDIR "../compile/"
64 char destdir[MAXPATHLEN];
65 char srcdir[MAXPATHLEN];
67 static int no_config_clobber = TRUE;
71 static void configfile(void);
72 static void get_srcdir(void);
73 static void usage(void);
76 * Config builds a set of files for building a UNIX
77 * system given a description of the desired system.
80 main(int argc, char *argv[])
86 char linksrc[64], linkdest[MAXPATHLEN];
87 static const char *emus[] = { "linux" };
89 while ((ch = getopt(argc, argv, "d:gpr")) != -1)
93 strlcpy(destdir, optarg, sizeof(destdir));
95 errx(2, "directory already set");
104 no_config_clobber = FALSE;
116 if (freopen(PREFIX = *argv, "r", stdin) == NULL)
117 err(2, "%s", PREFIX);
119 if (*destdir != '\0') {
120 len = strlen(destdir);
121 while (len > 1 && destdir[len - 1] == '/')
122 destdir[--len] = '\0';
125 strlcpy(destdir, CDIR, sizeof(destdir));
126 strlcat(destdir, PREFIX, sizeof(destdir));
134 else if ((buf.st_mode & S_IFMT) != S_IFDIR) {
135 errx(2, "%s isn't a directory", p);
137 else if (!no_config_clobber) {
138 char tmp[strlen(p) + 8];
140 fprintf(stderr, "Removing old directory %s: ", p);
142 snprintf(tmp, sizeof(tmp), "rm -rf %s", p);
144 fprintf(stderr, "Failed!\n");
147 fprintf(stderr, "Done.\n");
155 if (platformname == NULL) {
156 printf("Specify platform architecture, e.g. 'platform pc32'\n");
159 if (machinename == NULL) {
160 printf("Specify machine architecture, e.g. 'machine i386'\n");
163 if (machinearchname == NULL) {
164 printf("Specify cpu architecture, e.g. 'machine_arch i386'\n");
170 * "machine" points into platform/<PLATFORM>/include
173 snprintf(linkdest, sizeof(linkdest), "../../platform/%s/include",
176 snprintf(linkdest, sizeof(linkdest), "%s/platform/%s/include",
177 srcdir, platformname);
178 symlink(linkdest, path("machine"));
181 * "machine_base" points into platform/<PLATFORM>
184 snprintf(linkdest, sizeof(linkdest), "../../platform/%s",
187 snprintf(linkdest, sizeof(linkdest), "%s/platform/%s",
188 srcdir, platformname);
189 symlink(linkdest, path("machine_base"));
192 * "cpu" points to cpu/<MACHINE_ARCH>/include
195 snprintf(linkdest, sizeof(linkdest),
196 "../../cpu/%s/include", machinearchname);
198 snprintf(linkdest, sizeof(linkdest),
199 "%s/cpu/%s/include", srcdir, machinearchname);
200 symlink(linkdest, path("cpu"));
203 * "cpu_base" points to cpu/<MACHINE_ARCH>
206 snprintf(linkdest, sizeof(linkdest), "../../cpu/%s",
209 snprintf(linkdest, sizeof(linkdest), "%s/cpu/%s",
210 srcdir, machinearchname);
211 symlink(linkdest, path("cpu_base"));
214 * XXX check directory structure for architecture subdirectories and
215 * create the symlinks automatically XXX
218 snprintf(linkdest, sizeof(linkdest),
219 "../../../../../net/i4b/include/%s",
222 snprintf(linkdest, sizeof(linkdest), "%s/net/i4b/include/%s",
223 srcdir, machinearchname);
224 mkdir(path("net"), 0755);
225 mkdir(path("net/i4b"), 0755);
226 mkdir(path("net/i4b/include"), 0755);
227 symlink(linkdest, path("net/i4b/include/machine"));
229 for (i = 0; i < sizeof(emus) / sizeof(emus[0]); ++i) {
231 snprintf(linkdest, sizeof(linkdest),
232 "../../emulation/%s/%s",
233 emus[i], machinearchname);
235 snprintf(linkdest, sizeof(linkdest),
236 "%s/emulation/%s/%s",
237 srcdir, emus[i], machinearchname);
239 snprintf(linksrc, sizeof(linksrc), "arch_%s", emus[i]);
240 symlink(linkdest, path(linksrc));
243 options(); /* make options .h files */
244 makefile(); /* build Makefile */
245 headers(); /* make a lot of .h files */
246 configfile(); /* put config file into kernel*/
247 printf("Kernel build directory is %s\n", p);
253 * determine the root of the kernel source tree
254 * and save that in srcdir.
260 if (realpath("..", srcdir) == NULL)
261 errx(2, "Unable to find root of source tree");
268 fprintf(stderr, "usage: config [-gpr] [-d destdir] sysname\n");
274 * returns EOF on end of file
275 * NULL on end of line
276 * pointer to the word otherwise
281 static char line[80];
287 while ((ch = getc(fp)) != EOF)
288 if (ch != ' ' && ch != '\t')
306 while ((ch = getc(fp)) != EOF) {
320 * like get_word but will accept something in double or single quotes
321 * (to allow embedded spaces).
324 get_quoted_word(FILE *fp)
326 static char line[256];
332 while ((ch = getc(fp)) != EOF)
333 if (ch != ' ' && ch != '\t')
350 if (ch == '"' || ch == '\'') {
353 while ((ch = getc(fp)) != EOF) {
358 printf("config: missing quote reading `%s'\n",
366 while ((ch = getc(fp)) != EOF) {
381 * prepend the path to a filename
384 path(const char *file)
388 cp = malloc((size_t)(strlen(destdir) + (file ? strlen(file) : 0) + 2));
404 fi = fopen(PREFIX, "r");
406 err(2, "%s", PREFIX);
407 fo = fopen(p = path("config.c.new"), "w");
410 fprintf(fo, "#include \"opt_config.h\"\n");
411 fprintf(fo, "#ifdef INCLUDE_CONFIG_FILE \n");
412 fprintf(fo, "/* Mark config as used, so gcc doesn't optimize it away. */\n");
413 fprintf(fo, "#include <sys/types.h>\n");
414 fprintf(fo, "__used\n");
415 fprintf(fo, "static const char config[] = \"\\\n");
416 fprintf(fo, "START CONFIG FILE %s\\n\\\n___", PREFIX);
417 while (EOF != (i = getc(fi))) {
419 fprintf(fo, "\\n\\\n___");
420 } else if (i == '\"') {
422 } else if (i == '\\') {
428 fprintf(fo, "\\n\\\nEND CONFIG FILE %s\\n\\\n", PREFIX);
429 fprintf(fo, "\";\n");
430 fprintf(fo, "\n#endif /* INCLUDE_CONFIG_FILE */\n");
433 moveifchanged(path("config.c.new"), path("config.c"));
438 * compare two files; rename if changed.
441 moveifchanged(const char *from_name, const char *to_name)
446 struct stat from_sb, to_sb;
451 if ((from_fd = open(from_name, O_RDONLY)) < 0)
452 err(EX_OSERR, "moveifchanged open(%s)", from_name);
454 if ((to_fd = open(to_name, O_RDONLY)) < 0)
457 if (!changed && fstat(from_fd, &from_sb) < 0)
458 err(EX_OSERR, "moveifchanged fstat(%s)", from_name);
460 if (!changed && fstat(to_fd, &to_sb) < 0)
461 err(EX_OSERR, "moveifchanged fstat(%s)", to_name);
463 if (!changed && from_sb.st_size != to_sb.st_size)
466 tsize = (size_t)from_sb.st_size;
469 p = mmap(NULL, tsize, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
471 #define MAP_FAILED ((caddr_t)-1)
474 err(EX_OSERR, "mmap %s", from_name);
475 q = mmap(NULL, tsize, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
477 err(EX_OSERR, "mmap %s", to_name);
479 changed = memcmp(p, q, tsize);
484 if (rename(from_name, to_name) < 0)
485 err(EX_OSERR, "rename(%s, %s)", from_name, to_name);
487 if (unlink(from_name) < 0)
488 err(EX_OSERR, "unlink(%s)", from_name);