cd protobuf
if [ -f build/src/.libs/libprotobuf.a ]; then
	echo "protobuf already builded!"
	exit 0
fi
./autogen.sh
cd build
../configure
make -DCMAKE_CXX_FLAGS="${CXX_FLAGS}" -DCMAKE_C_FLAGS="${C_FLAGS}" ${MAKE_OPTIONS}
#make check
sudo make install
sudo ldconfig