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. 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
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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
[])
81 char linkdest
[MAXPATHLEN
];
85 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 pc64'\n");
158 if (machinename
== NULL
) {
159 printf("Specify machine architecture, e.g. 'machine x86_64'\n");
162 if (machinearchname
== NULL
) {
163 printf("Specify cpu architecture, e.g. 'machine_arch x86_64'\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
217 for (i
= 0; i
< sizeof(emus
) / sizeof(emus
[0]); ++i
) {
219 snprintf(linkdest
, sizeof(linkdest
),
220 "../../emulation/%s/%s",
221 emus
[i
], machinearchname
);
223 snprintf(linkdest
, sizeof(linkdest
),
224 "%s/emulation/%s/%s",
225 srcdir
, emus
[i
], machinearchname
);
227 snprintf(linksrc
, sizeof(linksrc
), "arch_%s", emus
[i
]);
228 symlink(linkdest
, path(linksrc
));
232 options(); /* make options .h files */
233 makefile(); /* build Makefile */
234 headers(); /* make a lot of .h files */
235 configfile(); /* put config file into kernel*/
236 printf("Kernel build directory is %s\n", p
);
242 * determine the root of the kernel source tree
243 * and save that in srcdir.
249 if (realpath("..", srcdir
) == NULL
)
250 errx(2, "Unable to find root of source tree");
257 fprintf(stderr
, "usage: config [-gpr] [-d destdir] sysname\n");
263 * returns EOF on end of file
264 * NULL on end of line
265 * pointer to the word otherwise
270 static char line
[80];
276 while ((ch
= getc(fp
)) != EOF
)
277 if (ch
!= ' ' && ch
!= '\t')
295 while ((ch
= getc(fp
)) != EOF
) {
309 * like get_word but will accept something in double or single quotes
310 * (to allow embedded spaces).
313 get_quoted_word(FILE *fp
)
315 static char line
[256];
321 while ((ch
= getc(fp
)) != EOF
)
322 if (ch
!= ' ' && ch
!= '\t')
339 if (ch
== '"' || ch
== '\'') {
342 while ((ch
= getc(fp
)) != EOF
) {
347 printf("config: missing quote reading `%s'\n",
355 while ((ch
= getc(fp
)) != EOF
) {
370 * prepend the path to a filename
373 path(const char *file
)
377 cp
= malloc((size_t)(strlen(destdir
) + (file
? strlen(file
) : 0) + 2));
393 fi
= fopen(PREFIX
, "r");
395 err(2, "%s", PREFIX
);
396 fo
= fopen(p
= path("config.c.new"), "w");
399 fprintf(fo
, "#include \"opt_config.h\"\n");
400 fprintf(fo
, "#ifdef INCLUDE_CONFIG_FILE \n");
401 fprintf(fo
, "/* Mark config as used, so gcc doesn't optimize it away. */\n");
402 fprintf(fo
, "#include <sys/types.h>\n");
403 fprintf(fo
, "__used\n");
404 fprintf(fo
, "static const char config[] = \"\\\n");
405 fprintf(fo
, "START CONFIG FILE %s\\n\\\n___", PREFIX
);
406 while (EOF
!= (i
= getc(fi
))) {
408 fprintf(fo
, "\\n\\\n___");
409 } else if (i
== '\"') {
411 } else if (i
== '\\') {
417 fprintf(fo
, "\\n\\\nEND CONFIG FILE %s\\n\\\n", PREFIX
);
418 fprintf(fo
, "\";\n");
419 fprintf(fo
, "\n#endif /* INCLUDE_CONFIG_FILE */\n");
422 moveifchanged(path("config.c.new"), path("config.c"));
427 * compare two files; rename if changed.
430 moveifchanged(const char *from_name
, const char *to_name
)
435 struct stat from_sb
, to_sb
;
440 if ((from_fd
= open(from_name
, O_RDONLY
)) < 0)
441 err(EX_OSERR
, "moveifchanged open(%s)", from_name
);
443 if ((to_fd
= open(to_name
, O_RDONLY
)) < 0)
446 if (!changed
&& fstat(from_fd
, &from_sb
) < 0)
447 err(EX_OSERR
, "moveifchanged fstat(%s)", from_name
);
449 if (!changed
&& fstat(to_fd
, &to_sb
) < 0)
450 err(EX_OSERR
, "moveifchanged fstat(%s)", to_name
);
452 if (!changed
&& from_sb
.st_size
!= to_sb
.st_size
)
455 tsize
= (size_t)from_sb
.st_size
;
458 p
= mmap(NULL
, tsize
, PROT_READ
, MAP_SHARED
, from_fd
, (off_t
)0);
460 #define MAP_FAILED ((caddr_t)-1)
463 err(EX_OSERR
, "mmap %s", from_name
);
464 q
= mmap(NULL
, tsize
, PROT_READ
, MAP_SHARED
, to_fd
, (off_t
)0);
466 err(EX_OSERR
, "mmap %s", to_name
);
468 changed
= memcmp(p
, q
, tsize
);
473 if (rename(from_name
, to_name
) < 0)
474 err(EX_OSERR
, "rename(%s, %s)", from_name
, to_name
);
476 if (unlink(from_name
) < 0)
477 err(EX_OSERR
, "unlink(%s)", from_name
);