9 vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; }
11 # If compile.h exists already and we don't own autoconf.h
12 # (i.e. we're not the same user who did make *config), don't
14 # So "sudo make install" won't change the "compiled by <user>"
15 # do "compiled by root"
17 if [ -r $TARGET -a ! -O include/generated/autoconf.h ]; then
18 vecho " SKIPPED $TARGET"
25 # Fix the language to get consistent output
29 if [ -z "$KBUILD_BUILD_VERSION" ]; then
30 if [ -r .version ]; then
31 VERSION=`cat .version`
37 VERSION=$KBUILD_BUILD_VERSION
40 if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then
43 TIMESTAMP=$KBUILD_BUILD_TIMESTAMP
46 UTS_VERSION="#$VERSION"
48 if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
49 if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
50 UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP"
52 # Truncate to maximum length
55 UTS_TRUNCATE="cut -b -$UTS_LEN"
57 # Generate a temporary compile.h
59 ( echo /\* This file is auto generated, version $VERSION \*/
60 if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi
62 echo \#define UTS_MACHINE \"$ARCH\"
64 echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\"
66 echo \#define LINUX_COMPILE_BY \"`whoami`\"
67 echo \#define LINUX_COMPILE_HOST \"`hostname | $UTS_TRUNCATE`\"
69 echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | tail -n 1`\"
72 # Only replace the real compile.h if the new one is different,
73 # in order to preserve the timestamp and avoid unnecessary
75 # We don't consider the file changed if only the date/time changed.
76 # A kernel config change will increase the generation number, thus
77 # causing compile.h to be updated (including date/time) due to the
78 # changed comment in the
81 if [ -r $TARGET ] && \
82 grep -v 'UTS_VERSION' $TARGET > .tmpver.1 && \
83 grep -v 'UTS_VERSION' .tmpcompile > .tmpver.2 && \
84 cmp -s .tmpver.1 .tmpver.2; then
88 mv -f .tmpcompile $TARGET
90 rm -f .tmpver.1 .tmpver.2