blob: d7b8a384b4a7991960d33c7c01c60d6f58f92fd6 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001TARGET=$1
2ARCH=$2
3SMP=$3
Sam Ravnborgbd5bdd82005-07-14 20:18:07 +00004PREEMPT=$4
5CC=$5
Linus Torvalds1da177e2005-04-16 15:20:36 -07006
7# If compile.h exists already and we don't own autoconf.h
8# (i.e. we're not the same user who did make *config), don't
9# modify compile.h
10# So "sudo make install" won't change the "compiled by <user>"
11# do "compiled by root"
12
13if [ -r $TARGET -a ! -O include/linux/autoconf.h ]; then
14 echo " SKIPPED $TARGET"
15 exit 0
16fi
17
18# Do not expand names
19set -f
20
21if [ -r .version ]; then
22 VERSION=`cat .version`
23else
24 VERSION=0
25 echo 0 > .version
26fi
27
28
29UTS_VERSION="#$VERSION"
Sam Ravnborgbd5bdd82005-07-14 20:18:07 +000030CONFIG_FLAGS=""
31if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
32if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
33UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS `LC_ALL=C LANG=C date`"
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
35# Truncate to maximum length
36
37UTS_LEN=64
38UTS_TRUNCATE="sed -e s/\(.\{1,$UTS_LEN\}\).*/\1/"
39
40# Generate a temporary compile.h
41
42( echo /\* This file is auto generated, version $VERSION \*/
Sam Ravnborgbd5bdd82005-07-14 20:18:07 +000043 if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi
44
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 echo \#define UTS_MACHINE \"$ARCH\"
46
47 echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\"
48
49 echo \#define LINUX_COMPILE_TIME \"`LC_ALL=C LANG=C date +%T`\"
50 echo \#define LINUX_COMPILE_BY \"`whoami`\"
51 echo \#define LINUX_COMPILE_HOST \"`hostname | $UTS_TRUNCATE`\"
52
53 if [ -x /bin/dnsdomainname ]; then
54 echo \#define LINUX_COMPILE_DOMAIN \"`dnsdomainname | $UTS_TRUNCATE`\"
55 elif [ -x /bin/domainname ]; then
56 echo \#define LINUX_COMPILE_DOMAIN \"`domainname | $UTS_TRUNCATE`\"
57 else
58 echo \#define LINUX_COMPILE_DOMAIN
59 fi
60
61 echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | tail -n 1`\"
62) > .tmpcompile
63
64# Only replace the real compile.h if the new one is different,
65# in order to preserve the timestamp and avoid unnecessary
66# recompilations.
67# We don't consider the file changed if only the date/time changed.
68# A kernel config change will increase the generation number, thus
69# causing compile.h to be updated (including date/time) due to the
70# changed comment in the
71# first line.
72
73if [ -r $TARGET ] && \
74 grep -v 'UTS_VERSION\|LINUX_COMPILE_TIME' $TARGET > .tmpver.1 && \
75 grep -v 'UTS_VERSION\|LINUX_COMPILE_TIME' .tmpcompile > .tmpver.2 && \
76 cmp -s .tmpver.1 .tmpver.2; then
77 rm -f .tmpcompile
78else
79 echo " UPD $TARGET"
80 mv -f .tmpcompile $TARGET
81fi
82rm -f .tmpver.1 .tmpver.2