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
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12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)main.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/usr.sbin/config/main.c,v 1.37.2.3 2001/06/13 00:25:53 cg Exp $
34 #include <sys/types.h>
38 #include <sys/param.h>
56 #define CDIR "../compile/"
59 char destdir[MAXPATHLEN];
60 char srcdir[MAXPATHLEN];
62 static int no_config_clobber = TRUE;
66 extern int yyparse(void);
67 static void configfile(void);
68 static void get_srcdir(void);
69 static void usage(void);
72 * Config builds a set of files for building a UNIX
73 * system given a description of the desired system.
76 main(int argc, char *argv[])
82 char linksrc[64], linkdest[MAXPATHLEN];
83 static const char *emus[] = { "linux" };
85 while ((ch = getopt(argc, argv, "d:gpr")) != -1)
89 strlcpy(destdir, optarg, sizeof(destdir));
91 errx(2, "directory already set");
100 no_config_clobber = FALSE;
112 if (freopen(PREFIX = *argv, "r", stdin) == NULL)
113 err(2, "%s", PREFIX);
115 if (*destdir != '\0') {
116 len = strlen(destdir);
117 while (len > 1 && destdir[len - 1] == '/')
118 destdir[--len] = '\0';
121 strlcpy(destdir, CDIR, sizeof(destdir));
122 strlcat(destdir, PREFIX, sizeof(destdir));
130 else if ((buf.st_mode & S_IFMT) != S_IFDIR) {
131 errx(2, "%s isn't a directory", p);
133 else if (!no_config_clobber) {
134 char tmp[strlen(p) + 8];
136 fprintf(stderr, "Removing old directory %s: ", p);
138 snprintf(tmp, sizeof(tmp), "rm -rf %s", p);
140 fprintf(stderr, "Failed!\n");
143 fprintf(stderr, "Done.\n");
151 if (platformname == NULL) {
152 printf("Specify platform architecture, e.g. 'platform pc64'\n");
155 if (machinename == NULL) {
156 printf("Specify machine architecture, e.g. 'machine x86_64'\n");
159 if (machinearchname == NULL) {
160 printf("Specify cpu architecture, e.g. 'machine_arch x86_64'\n");
166 * "machine" points into platform/<PLATFORM>/include
169 snprintf(linkdest, sizeof(linkdest), "../../platform/%s/include",
172 snprintf(linkdest, sizeof(linkdest), "%s/platform/%s/include",
173 srcdir, platformname);
174 symlink(linkdest, path("machine"));
177 * "machine_base" points into platform/<PLATFORM>
180 snprintf(linkdest, sizeof(linkdest), "../../platform/%s",
183 snprintf(linkdest, sizeof(linkdest), "%s/platform/%s",
184 srcdir, platformname);
185 symlink(linkdest, path("machine_base"));
188 * "cpu" points to cpu/<MACHINE_ARCH>/include
191 snprintf(linkdest, sizeof(linkdest),
192 "../../cpu/%s/include", machinearchname);
194 snprintf(linkdest, sizeof(linkdest),
195 "%s/cpu/%s/include", srcdir, machinearchname);
196 symlink(linkdest, path("cpu"));
199 * "cpu_base" points to cpu/<MACHINE_ARCH>
202 snprintf(linkdest, sizeof(linkdest), "../../cpu/%s",
205 snprintf(linkdest, sizeof(linkdest), "%s/cpu/%s",
206 srcdir, machinearchname);
207 symlink(linkdest, path("cpu_base"));
210 * XXX check directory structure for architecture subdirectories and
211 * create the symlinks automatically XXX
213 for (i = 0; i < sizeof(emus) / sizeof(emus[0]); ++i) {
215 snprintf(linkdest, sizeof(linkdest),
216 "../../emulation/%s/%s",
217 emus[i], machinearchname);
219 snprintf(linkdest, sizeof(linkdest),
220 "%s/emulation/%s/%s",
221 srcdir, emus[i], machinearchname);
223 snprintf(linksrc, sizeof(linksrc), "arch_%s", emus[i]);
224 symlink(linkdest, path(linksrc));
227 options(); /* make options .h files */
228 makefile(); /* build Makefile */
229 headers(); /* make a lot of .h files */
230 configfile(); /* put config file into kernel*/
231 printf("Kernel build directory is %s\n", p);
237 * determine the root of the kernel source tree
238 * and save that in srcdir.
244 if (realpath("..", srcdir) == NULL)
245 errx(2, "Unable to find root of source tree");
252 fprintf(stderr, "usage: config [-gpr] [-d destdir] sysname\n");
258 * returns EOF on end of file
259 * NULL on end of line
260 * pointer to the word otherwise
265 static char line[80];
271 while ((ch = getc(fp)) != EOF)
272 if (ch != ' ' && ch != '\t')
290 while ((ch = getc(fp)) != EOF) {
304 * like get_word but will accept something in double or single quotes
305 * (to allow embedded spaces).
308 get_quoted_word(FILE *fp)
310 static char line[256];
316 while ((ch = getc(fp)) != EOF)
317 if (ch != ' ' && ch != '\t')
334 if (ch == '"' || ch == '\'') {
337 while ((ch = getc(fp)) != EOF) {
342 printf("config: missing quote reading `%s'\n",
350 while ((ch = getc(fp)) != EOF) {
365 * prepend the path to a filename
368 path(const char *file)
372 cp = malloc((size_t)(strlen(destdir) + (file ? strlen(file) : 0) + 2));
388 fi = fopen(PREFIX, "r");
390 err(2, "%s", PREFIX);
391 fo = fopen(p = path("config.c.new"), "w");
394 fprintf(fo, "#include \"opt_config.h\"\n");
395 fprintf(fo, "#ifdef INCLUDE_CONFIG_FILE \n");
396 fprintf(fo, "/* Mark config as used, so gcc doesn't optimize it away. */\n");
397 fprintf(fo, "#include <sys/types.h>\n");
398 fprintf(fo, "__used\n");
399 fprintf(fo, "static const char config[] = \"\\\n");
400 fprintf(fo, "START CONFIG FILE %s\\n\\\n___", PREFIX);
401 while (EOF != (i = getc(fi))) {
403 fprintf(fo, "\\n\\\n___");
404 } else if (i == '\"') {
406 } else if (i == '\\') {
412 fprintf(fo, "\\n\\\nEND CONFIG FILE %s\\n\\\n", PREFIX);
413 fprintf(fo, "\";\n");
414 fprintf(fo, "\n#endif /* INCLUDE_CONFIG_FILE */\n");
417 moveifchanged(path("config.c.new"), path("config.c"));
422 * compare two files; rename if changed.
425 moveifchanged(const char *from_name, const char *to_name)
430 struct stat from_sb, to_sb;
435 if ((from_fd = open(from_name, O_RDONLY)) < 0)
436 err(EX_OSERR, "moveifchanged open(%s)", from_name);
438 if ((to_fd = open(to_name, O_RDONLY)) < 0)
441 if (!changed && fstat(from_fd, &from_sb) < 0)
442 err(EX_OSERR, "moveifchanged fstat(%s)", from_name);
444 if (!changed && fstat(to_fd, &to_sb) < 0)
445 err(EX_OSERR, "moveifchanged fstat(%s)", to_name);
447 if (!changed && from_sb.st_size != to_sb.st_size)
450 tsize = (size_t)from_sb.st_size;
453 p = mmap(NULL, tsize, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
455 #define MAP_FAILED ((caddr_t)-1)
458 err(EX_OSERR, "mmap %s", from_name);
459 q = mmap(NULL, tsize, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
461 err(EX_OSERR, "mmap %s", to_name);
463 changed = memcmp(p, q, tsize);
468 if (rename(from_name, to_name) < 0)
469 err(EX_OSERR, "rename(%s, %s)", from_name, to_name);
471 if (unlink(from_name) < 0)
472 err(EX_OSERR, "unlink(%s)", from_name);