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 $
36 * $DragonFly: src/usr.sbin/config/main.c,v 1.19 2006/11/07 06:57:02 dillon 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 generate_forwarding_headers(void);
74 static void usage(void);
77 * Config builds a set of files for building a UNIX
78 * system given a description of the desired system.
81 main(int argc, char *argv[])
87 char linksrc[64], linkdest[MAXPATHLEN];
88 static const char *emus[] = { "linux" };
90 while ((ch = getopt(argc, argv, "d:gprn")) != -1)
94 strlcpy(destdir, optarg, sizeof(destdir));
96 errx(2, "directory already set");
105 /* no_config_clobber is now true by default, no-op */
107 "*** Using obsolete config option '-n' ***\n");
110 no_config_clobber = FALSE;
122 if (freopen(PREFIX = *argv, "r", stdin) == NULL)
123 err(2, "%s", PREFIX);
125 if (*destdir != '\0') {
126 len = strlen(destdir);
127 while (len > 1 && destdir[len - 1] == '/')
128 destdir[--len] = '\0';
131 strlcpy(destdir, CDIR, sizeof(destdir));
132 strlcat(destdir, PREFIX, sizeof(destdir));
135 p = path((char *)NULL);
140 else if ((buf.st_mode & S_IFMT) != S_IFDIR) {
141 errx(2, "%s isn't a directory", p);
143 else if (!no_config_clobber) {
144 char tmp[strlen(p) + 8];
146 fprintf(stderr, "Removing old directory %s: ", p);
148 snprintf(tmp, sizeof(tmp), "rm -rf %s", p);
150 fprintf(stderr, "Failed!\n");
153 fprintf(stderr, "Done.\n");
161 if (machinename == NULL) {
162 printf("Specify platform architecture, e.g. 'machine pc32'\n");
165 if (machinearchname == NULL) {
166 printf("Specify cpu architecture, e.g. 'machine_arch i386'\n");
172 * "machine" points into machine/<MACHINE>/include
175 snprintf(linkdest, sizeof(linkdest), "../../machine/%s/include",
178 snprintf(linkdest, sizeof(linkdest), "%s/machine/%s/include",
179 srcdir, machinename);
180 symlink(linkdest, path("machine"));
183 * "machine_base" points into machine/<MACHINE>
186 snprintf(linkdest, sizeof(linkdest), "../../machine/%s",
189 snprintf(linkdest, sizeof(linkdest), "%s/machine/%s",
190 srcdir, machinename);
191 symlink(linkdest, path("machine_base"));
194 * "cpu" points to cpu/<MACHINE_ARCH>/include
197 snprintf(linkdest, sizeof(linkdest),
198 "../../cpu/%s/include", machinearchname);
200 snprintf(linkdest, sizeof(linkdest),
201 "%s/cpu/%s/include", srcdir, machinearchname);
202 symlink(linkdest, path("cpu"));
205 * "cpu_base" points to cpu/<MACHINE_ARCH>
208 snprintf(linkdest, sizeof(linkdest), "../../cpu/%s",
211 snprintf(linkdest, sizeof(linkdest), "%s/cpu/%s",
212 srcdir, machinearchname);
213 symlink(linkdest, path("cpu_base"));
216 * Create include/machine, in which we place forwarding header files
217 * for headers that exist in the cpu architecture but have not been
218 * overridden in the platform architecture.
220 mkdir(path("include"), 0755);
221 mkdir(path("include/machine"), 0755);
222 generate_forwarding_headers();
225 * XXX check directory structure for architecture subdirectories and
226 * create the symlinks automatically XXX
229 snprintf(linkdest, sizeof(linkdest),
230 "../../../../../net/i4b/include/%s",
233 snprintf(linkdest, sizeof(linkdest), "%s/net/i4b/include/%s",
234 srcdir, machinearchname);
235 mkdir(path("net"), 0755);
236 mkdir(path("net/i4b"), 0755);
237 mkdir(path("net/i4b/include"), 0755);
238 symlink(linkdest, path("net/i4b/include/machine"));
240 for (i = 0; i < sizeof(emus) / sizeof(emus[0]); ++i) {
242 snprintf(linkdest, sizeof(linkdest),
243 "../../emulation/%s/%s",
244 emus[i], machinearchname);
246 snprintf(linkdest, sizeof(linkdest),
247 "%s/emulation/%s/%s",
248 srcdir, emus[i], machinearchname);
250 snprintf(linksrc, sizeof(linksrc), "arch_%s", emus[i]);
251 symlink(linkdest, path(linksrc));
254 options(); /* make options .h files */
255 makefile(); /* build Makefile */
256 headers(); /* make a lot of .h files */
257 configfile(); /* put config file into kernel*/
258 printf("Kernel build directory is %s\n", p);
264 * determine the root of the kernel source tree
265 * and save that in srcdir.
271 if (realpath("..", srcdir) == NULL)
272 errx(2, "Unable to find root of source tree");
279 fprintf(stderr, "usage: config [-gpr] [-d destdir] sysname\n");
285 * returns EOF on end of file
286 * NULL on end of line
287 * pointer to the word otherwise
292 static char line[80];
298 while ((ch = getc(fp)) != EOF)
299 if (ch != ' ' && ch != '\t')
317 while ((ch = getc(fp)) != EOF) {
331 * like get_word but will accept something in double or single quotes
332 * (to allow embedded spaces).
335 get_quoted_word(FILE *fp)
337 static char line[256];
343 while ((ch = getc(fp)) != EOF)
344 if (ch != ' ' && ch != '\t')
361 if (ch == '"' || ch == '\'') {
364 while ((ch = getc(fp)) != EOF) {
369 printf("config: missing quote reading `%s'\n",
377 while ((ch = getc(fp)) != EOF) {
392 * prepend the path to a filename
395 path(const char *file)
399 cp = malloc((size_t)(strlen(destdir) + (file ? strlen(file) : 0) + 2));
415 fi = fopen(PREFIX, "r");
417 err(2, "%s", PREFIX);
418 fo = fopen(p = path("config.c.new"), "w");
421 fprintf(fo, "#include \"opt_config.h\"\n");
422 fprintf(fo, "#ifdef INCLUDE_CONFIG_FILE \n");
423 fprintf(fo, "static const char config[] = \"\\\n");
424 fprintf(fo, "START CONFIG FILE %s\\n\\\n___", PREFIX);
425 while (EOF != (i = getc(fi))) {
427 fprintf(fo, "\\n\\\n___");
428 } else if (i == '\"') {
430 } else if (i == '\\') {
436 fprintf(fo, "\\n\\\nEND CONFIG FILE %s\\n\\\n", PREFIX);
437 fprintf(fo, "\";\n");
438 fprintf(fo, "\n#endif /* INCLUDE_CONFIG_FILE */\n");
441 moveifchanged(path("config.c.new"), path("config.c"));
446 * compare two files; rename if changed.
449 moveifchanged(const char *from_name, const char *to_name)
454 struct stat from_sb, to_sb;
459 if ((from_fd = open(from_name, O_RDONLY)) < 0)
460 err(EX_OSERR, "moveifchanged open(%s)", from_name);
462 if ((to_fd = open(to_name, O_RDONLY)) < 0)
465 if (!changed && fstat(from_fd, &from_sb) < 0)
466 err(EX_OSERR, "moveifchanged fstat(%s)", from_name);
468 if (!changed && fstat(to_fd, &to_sb) < 0)
469 err(EX_OSERR, "moveifchanged fstat(%s)", to_name);
471 if (!changed && from_sb.st_size != to_sb.st_size)
474 tsize = (size_t)from_sb.st_size;
477 p = mmap(NULL, tsize, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
479 #define MAP_FAILED ((caddr_t)-1)
482 err(EX_OSERR, "mmap %s", from_name);
483 q = mmap(NULL, tsize, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
485 err(EX_OSERR, "mmap %s", to_name);
487 changed = memcmp(p, q, tsize);
492 if (rename(from_name, to_name) < 0)
493 err(EX_OSERR, "rename(%s, %s)", from_name, to_name);
495 if (unlink(from_name) < 0)
496 err(EX_OSERR, "unlink(%s)", from_name);
502 generate_forwarding_headers(void)
504 char buf[MAXPATHLEN];
512 snprintf(buf, sizeof(buf), "../../cpu/%s/include",
515 snprintf(buf, sizeof(buf), "%s/cpu/%s/include",
516 srcdir, machinearchname);
518 if ((dir = opendir(buf)) != NULL) {
519 while ((den = readdir(dir)) != NULL) {
520 if (den->d_name[0] == '.')
524 * Is this a header file?
526 snprintf(upper, sizeof(upper), "%s", den->d_name);
527 ptr = strrchr(upper, '.');
528 if (ptr == NULL || strcmp(ptr, ".h") != 0)
532 * Generate an upper case symbol
535 for (ptr = upper; *ptr; ++ptr) {
538 else if (islower(*ptr))
539 *ptr = toupper(*ptr);
543 * Generate a forwarding header file
545 snprintf(buf, sizeof(buf), "%s/%s",
546 path("include/machine"), den->d_name);
547 fp = fopen(buf, "w");
549 " * CONFIG-GENERATED FILE, DO NOT EDIT\n"
552 "#ifndef _MACHINE_%s_H_\n"
553 "#define _MACHINE_%s_H_\n"
554 "#include <cpu/%s>\n"