1TARGET=$1 2ARCH=$2 3SMP=$3 4PREEMPT=$4 5CC=$5 6 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" 30CONFIG_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`" 34 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 $VERSION \*/ 43 if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi 44 45 echo \#define UTS_MACHINE \"$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 \"`LC_ALL=C LANG=C $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 83