482 lines
10 KiB
C
482 lines
10 KiB
C
/*
|
|
* Copyright (c) 1980, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1980, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/file.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/param.h>
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <sysexits.h>
|
|
#include <unistd.h>
|
|
#include <dirent.h>
|
|
#include "y.tab.h"
|
|
#include "config.h"
|
|
|
|
#ifndef TRUE
|
|
#define TRUE (1)
|
|
#endif
|
|
|
|
#ifndef FALSE
|
|
#define FALSE (0)
|
|
#endif
|
|
|
|
#define CDIR "../compile/"
|
|
|
|
char * PREFIX;
|
|
char destdir[MAXPATHLEN];
|
|
char srcdir[MAXPATHLEN];
|
|
|
|
int debugging;
|
|
int profiling;
|
|
|
|
static void configfile(void);
|
|
static void get_srcdir(void);
|
|
static void usage(void);
|
|
static void cleanheaders(char *);
|
|
|
|
struct hdr_list {
|
|
char *h_name;
|
|
struct hdr_list *h_next;
|
|
} *htab;
|
|
|
|
/*
|
|
* Config builds a set of files for building a UNIX
|
|
* system given a description of the desired system.
|
|
*/
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
|
|
struct stat buf;
|
|
int ch, len;
|
|
char *p;
|
|
char xxx[MAXPATHLEN];
|
|
|
|
while ((ch = getopt(argc, argv, "d:gp")) != -1)
|
|
switch (ch) {
|
|
case 'd':
|
|
if (*destdir == '\0')
|
|
strlcpy(destdir, optarg, sizeof(destdir));
|
|
else
|
|
errx(2, "directory already set");
|
|
break;
|
|
case 'g':
|
|
debugging++;
|
|
break;
|
|
case 'p':
|
|
profiling++;
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc != 1)
|
|
usage();
|
|
|
|
if (freopen(PREFIX = *argv, "r", stdin) == NULL)
|
|
err(2, "%s", PREFIX);
|
|
|
|
if (*destdir != '\0') {
|
|
len = strlen(destdir);
|
|
while (len > 1 && destdir[len - 1] == '/')
|
|
destdir[--len] = '\0';
|
|
get_srcdir();
|
|
} else {
|
|
strlcpy(destdir, CDIR, sizeof(destdir));
|
|
strlcat(destdir, PREFIX, sizeof(destdir));
|
|
}
|
|
|
|
p = path((char *)NULL);
|
|
if (stat(p, &buf)) {
|
|
if (mkdir(p, 0777))
|
|
err(2, "%s", p);
|
|
}
|
|
else if ((buf.st_mode & S_IFMT) != S_IFDIR)
|
|
errx(2, "%s isn't a directory", p);
|
|
|
|
STAILQ_INIT(&dtab);
|
|
STAILQ_INIT(&fntab);
|
|
SLIST_INIT(&cputype);
|
|
STAILQ_INIT(&ftab);
|
|
yyfile = *argv;
|
|
if (yyparse())
|
|
exit(3);
|
|
if (machinename == NULL) {
|
|
printf("Specify machine type, e.g. ``machine i386''\n");
|
|
exit(1);
|
|
}
|
|
/*
|
|
* make symbolic links in compilation directory
|
|
* for "sys" (to make genassym.c work along with #include <sys/xxx>)
|
|
* and similarly for "machine".
|
|
*/
|
|
if (*srcdir == '\0')
|
|
(void)snprintf(xxx, sizeof(xxx), "../../include");
|
|
else
|
|
(void)snprintf(xxx, sizeof(xxx), "%s/%s/include",
|
|
srcdir, machinename);
|
|
(void) unlink(path("machine"));
|
|
(void) symlink(xxx, path("machine"));
|
|
options(); /* make options .h files */
|
|
makefile(); /* build Makefile */
|
|
headers(); /* make a lot of .h files */
|
|
configfile(); /* put config file into kernel*/
|
|
cleanheaders(p);
|
|
printf("Kernel build directory is %s\n", p);
|
|
printf("Don't forget to do a ``make depend''\n");
|
|
exit(0);
|
|
}
|
|
|
|
/*
|
|
* get_srcdir
|
|
* determine the root of the kernel source tree
|
|
* and save that in srcdir.
|
|
*/
|
|
static void
|
|
get_srcdir(void)
|
|
{
|
|
|
|
if (realpath("../..", srcdir) == NULL)
|
|
errx(2, "Unable to find root of source tree");
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "usage: config [-gp] [-d destdir] sysname\n");
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* get_word
|
|
* returns EOF on end of file
|
|
* NULL on end of line
|
|
* pointer to the word otherwise
|
|
*/
|
|
char *
|
|
get_word(FILE *fp)
|
|
{
|
|
static char line[80];
|
|
int ch;
|
|
char *cp;
|
|
int escaped_nl = 0;
|
|
|
|
begin:
|
|
while ((ch = getc(fp)) != EOF)
|
|
if (ch != ' ' && ch != '\t')
|
|
break;
|
|
if (ch == EOF)
|
|
return ((char *)EOF);
|
|
if (ch == '\\'){
|
|
escaped_nl = 1;
|
|
goto begin;
|
|
}
|
|
if (ch == '\n') {
|
|
if (escaped_nl){
|
|
escaped_nl = 0;
|
|
goto begin;
|
|
}
|
|
else
|
|
return (NULL);
|
|
}
|
|
cp = line;
|
|
*cp++ = ch;
|
|
while ((ch = getc(fp)) != EOF) {
|
|
if (isspace(ch))
|
|
break;
|
|
*cp++ = ch;
|
|
}
|
|
*cp = 0;
|
|
if (ch == EOF)
|
|
return ((char *)EOF);
|
|
(void) ungetc(ch, fp);
|
|
return (line);
|
|
}
|
|
|
|
/*
|
|
* get_quoted_word
|
|
* like get_word but will accept something in double or single quotes
|
|
* (to allow embedded spaces).
|
|
*/
|
|
char *
|
|
get_quoted_word(FILE *fp)
|
|
{
|
|
static char line[256];
|
|
int ch;
|
|
char *cp;
|
|
int escaped_nl = 0;
|
|
|
|
begin:
|
|
while ((ch = getc(fp)) != EOF)
|
|
if (ch != ' ' && ch != '\t')
|
|
break;
|
|
if (ch == EOF)
|
|
return ((char *)EOF);
|
|
if (ch == '\\'){
|
|
escaped_nl = 1;
|
|
goto begin;
|
|
}
|
|
if (ch == '\n') {
|
|
if (escaped_nl){
|
|
escaped_nl = 0;
|
|
goto begin;
|
|
}
|
|
else
|
|
return (NULL);
|
|
}
|
|
cp = line;
|
|
if (ch == '"' || ch == '\'') {
|
|
int quote = ch;
|
|
|
|
while ((ch = getc(fp)) != EOF) {
|
|
if (ch == quote)
|
|
break;
|
|
if (ch == '\n') {
|
|
*cp = 0;
|
|
printf("config: missing quote reading `%s'\n",
|
|
line);
|
|
exit(2);
|
|
}
|
|
*cp++ = ch;
|
|
}
|
|
} else {
|
|
*cp++ = ch;
|
|
while ((ch = getc(fp)) != EOF) {
|
|
if (isspace(ch))
|
|
break;
|
|
*cp++ = ch;
|
|
}
|
|
if (ch != EOF)
|
|
(void) ungetc(ch, fp);
|
|
}
|
|
*cp = 0;
|
|
if (ch == EOF)
|
|
return ((char *)EOF);
|
|
return (line);
|
|
}
|
|
|
|
/*
|
|
* prepend the path to a filename
|
|
*/
|
|
char *
|
|
path(const char *file)
|
|
{
|
|
char *cp = NULL;
|
|
|
|
if (file)
|
|
asprintf(&cp, "%s/%s", destdir, file);
|
|
else
|
|
cp = strdup(destdir);
|
|
return (cp);
|
|
}
|
|
|
|
static void
|
|
configfile(void)
|
|
{
|
|
FILE *fi, *fo;
|
|
char *p;
|
|
int i;
|
|
|
|
fi = fopen(PREFIX, "r");
|
|
if (!fi)
|
|
err(2, "%s", PREFIX);
|
|
fo = fopen(p=path("config.c.new"), "w");
|
|
if (!fo)
|
|
err(2, "%s", p);
|
|
fprintf(fo, "#include \"opt_config.h\"\n");
|
|
fprintf(fo, "#ifdef INCLUDE_CONFIG_FILE \n");
|
|
fprintf(fo, "const char config[] = \"\\\n");
|
|
fprintf(fo, "START CONFIG FILE %s\\n\\\n___", PREFIX);
|
|
while (EOF != (i=getc(fi))) {
|
|
if (i == '\n') {
|
|
fprintf(fo, "\\n\\\n___");
|
|
} else if (i == '\"') {
|
|
fprintf(fo, "\\\"");
|
|
} else if (i == '\\') {
|
|
fprintf(fo, "\\\\");
|
|
} else {
|
|
putc(i, fo);
|
|
}
|
|
}
|
|
fprintf(fo, "\\n\\\nEND CONFIG FILE %s\\n\\\n", PREFIX);
|
|
fprintf(fo, "\";\n");
|
|
fprintf(fo, "\n#endif /* INCLUDE_CONFIG_FILE */\n");
|
|
fclose(fi);
|
|
fclose(fo);
|
|
moveifchanged(path("config.c.new"), path("config.c"));
|
|
}
|
|
|
|
/*
|
|
* moveifchanged --
|
|
* compare two files; rename if changed.
|
|
*/
|
|
void
|
|
moveifchanged(const char *from_name, const char *to_name)
|
|
{
|
|
char *p, *q;
|
|
int changed;
|
|
size_t tsize;
|
|
struct stat from_sb, to_sb;
|
|
int from_fd, to_fd;
|
|
|
|
changed = 0;
|
|
|
|
if ((from_fd = open(from_name, O_RDONLY)) < 0)
|
|
err(EX_OSERR, "moveifchanged open(%s)", from_name);
|
|
|
|
if ((to_fd = open(to_name, O_RDONLY)) < 0)
|
|
changed++;
|
|
|
|
if (!changed && fstat(from_fd, &from_sb) < 0)
|
|
err(EX_OSERR, "moveifchanged fstat(%s)", from_name);
|
|
|
|
if (!changed && fstat(to_fd, &to_sb) < 0)
|
|
err(EX_OSERR, "moveifchanged fstat(%s)", to_name);
|
|
|
|
if (!changed && from_sb.st_size != to_sb.st_size)
|
|
changed++;
|
|
|
|
tsize = (size_t)from_sb.st_size;
|
|
|
|
if (!changed) {
|
|
p = mmap(NULL, tsize, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
|
|
#ifndef MAP_FAILED
|
|
#define MAP_FAILED ((caddr_t) -1)
|
|
#endif
|
|
if (p == MAP_FAILED)
|
|
err(EX_OSERR, "mmap %s", from_name);
|
|
q = mmap(NULL, tsize, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
|
|
if (q == MAP_FAILED)
|
|
err(EX_OSERR, "mmap %s", to_name);
|
|
|
|
changed = memcmp(p, q, tsize);
|
|
munmap(p, tsize);
|
|
munmap(q, tsize);
|
|
}
|
|
if (changed) {
|
|
if (rename(from_name, to_name) < 0)
|
|
err(EX_OSERR, "rename(%s, %s)", from_name, to_name);
|
|
} else {
|
|
if (unlink(from_name) < 0)
|
|
err(EX_OSERR, "unlink(%s)", from_name);
|
|
}
|
|
}
|
|
|
|
static void
|
|
cleanheaders(char *p)
|
|
{
|
|
DIR *dirp;
|
|
struct dirent *dp;
|
|
struct file_list *fl;
|
|
struct hdr_list *hl;
|
|
int i;
|
|
|
|
remember("y.tab.h");
|
|
remember("setdefs.h");
|
|
STAILQ_FOREACH(fl, &ftab, f_next)
|
|
remember(fl->f_fn);
|
|
|
|
/*
|
|
* Scan the build directory and clean out stuff that looks like
|
|
* it might have been a leftover NFOO header, etc.
|
|
*/
|
|
if ((dirp = opendir(p)) == NULL)
|
|
err(EX_OSERR, "opendir %s", p);
|
|
while ((dp = readdir(dirp)) != NULL) {
|
|
i = dp->d_namlen - 2;
|
|
/* Skip non-headers */
|
|
if (dp->d_name[i] != '.' || dp->d_name[i + 1] != 'h')
|
|
continue;
|
|
/* Skip special stuff, eg: bus_if.h, but check opt_*.h */
|
|
if (index(dp->d_name, '_') &&
|
|
strncmp(dp->d_name, "opt_", 4) != 0)
|
|
continue;
|
|
/* Check if it is a target file */
|
|
for (hl = htab; hl != NULL; hl = hl->h_next) {
|
|
if (strcmp(dp->d_name, hl->h_name) == 0) {
|
|
break;
|
|
}
|
|
}
|
|
if (hl)
|
|
continue;
|
|
printf("Removing stale header: %s\n", dp->d_name);
|
|
if (unlink(path(dp->d_name)) == -1)
|
|
warn("unlink %s", dp->d_name);
|
|
}
|
|
(void)closedir(dirp);
|
|
}
|
|
|
|
void
|
|
remember(const char *file)
|
|
{
|
|
char *s;
|
|
struct hdr_list *hl;
|
|
|
|
if ((s = strrchr(file, '/')) != NULL)
|
|
s = ns(s + 1);
|
|
else
|
|
s = ns(file);
|
|
|
|
if (index(s, '_') && strncmp(s, "opt_", 4) != 0) {
|
|
free(s);
|
|
return;
|
|
}
|
|
for (hl = htab; hl != NULL; hl = hl->h_next) {
|
|
if (strcmp(s, hl->h_name) == 0) {
|
|
free(s);
|
|
return;
|
|
}
|
|
}
|
|
hl = malloc(sizeof(*hl));
|
|
bzero(hl, sizeof(*hl));
|
|
hl->h_name = s;
|
|
hl->h_next = htab;
|
|
htab = hl;
|
|
}
|