rocksdb/build_tools/build_detect_version

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#!/bin/sh
#
# Record the version of the source that we are compiling.
# We keep a record of the git revision in util/version.cc. This source file
# is then built as a regular source file as part of the compilation process.
# One can run "strings executable_filename | grep _build_" to find the version of
# the source that we used to build the executable file.
#
# create git version file
VFILE=$ROCKSDB_ROOT/util/build_version.cc.tmp
trap "rm $VFILE" EXIT
# check to see if git is in the path
which git > /dev/null
if [ "$?" = 0 ]; then
env -i git rev-parse HEAD |
awk '
BEGIN {
print "#include \"build_version.h\"\n"
}
{ print "const char* leveldb_build_git_sha = \"leveldb_build_git_sha:" $0"\";" }
' > ${VFILE}
else
echo "git not found" |
awk '
BEGIN {
print "#include \"build_version.h\""
}
{ print "const char* leveldb_build_git_sha = \"leveldb_build_git_sha:git not found\";" }
' > ${VFILE}
fi
echo "const char* leveldb_build_git_datetime = \"leveldb_build_git_datetime:$(date)\";" >> ${VFILE}
echo "const char* leveldb_build_compile_date = __DATE__;" >> ${VFILE}
echo "const char* leveldb_build_compile_time = __TIME__;" >> ${VFILE}
OUTFILE=$ROCKSDB_ROOT/util/build_version.cc
if [ ! -e $OUTFILE ] || ! cmp -s $VFILE $OUTFILE; then
cp $VFILE $OUTFILE
fi