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
10 # So "sudo make install" won't change the "compiled by <user>"
11 # do "compiled by root"
13 if [ -r $TARGET -a ! -O include/linux/autoconf.h ]; then
14 echo " SKIPPED $TARGET"
21 # Fix the language to get consistent output
25 if [ -z "$KBUILD_BUILD_VERSION" ]; then
26 if [ -r .version ]; then
27 VERSION=`cat .version`
33 VERSION=$KBUILD_BUILD_VERSION
36 if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then
39 TIMESTAMP=$KBUILD_BUILD_TIMESTAMP
42 UTS_VERSION="#$VERSION"
44 if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
45 if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
46 UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP"
48 # Truncate to maximum length
51 UTS_TRUNCATE="sed -e s/\(.\{1,$UTS_LEN\}\).*/\1/"
53 # Generate a temporary compile.h
55 ( echo /\* This file is auto generated, version $VERSION \*/
56 if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi
58 echo \#define UTS_MACHINE \"$ARCH\"
60 echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\"
62 echo \#define LINUX_COMPILE_TIME \"`date +%T`\"
63 echo \#define LINUX_COMPILE_BY \"`whoami`\"
64 echo \#define LINUX_COMPILE_HOST \"`hostname | $UTS_TRUNCATE`\"
66 if [ -x /bin/dnsdomainname ]; then
67 echo \#define LINUX_COMPILE_DOMAIN \"`dnsdomainname | $UTS_TRUNCATE`\"
68 elif [ -x /bin/domainname ]; then
69 echo \#define LINUX_COMPILE_DOMAIN \"`domainname | $UTS_TRUNCATE`\"
71 echo \#define LINUX_COMPILE_DOMAIN
74 echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | tail -n 1`\"
77 # Only replace the real compile.h if the new one is different,
78 # in order to preserve the timestamp and avoid unnecessary
80 # We don't consider the file changed if only the date/time changed.
81 # A kernel config change will increase the generation number, thus
82 # causing compile.h to be updated (including date/time) due to the
83 # changed comment in the
86 if [ -r $TARGET ] && \
87 grep -v 'UTS_VERSION\|LINUX_COMPILE_TIME' $TARGET > .tmpver.1 && \
88 grep -v 'UTS_VERSION\|LINUX_COMPILE_TIME' .tmpcompile > .tmpver.2 && \
89 cmp -s .tmpver.1 .tmpver.2; then
93 mv -f .tmpcompile $TARGET
95 rm -f .tmpver.1 .tmpver.2