LZ4 install script: Allow overwrite binaries

    ID="lz4"

    CURR="${SOURCE_DIR}/${ID}"

    cd "${CURR}"

    # try to remove binaries first in case they already exist. Otherwise install fails.

    LZ4_BINS=("${INSTALL_DIR}"/bin/lz4c "${INSTALL_DIR}"/bin/lz4cat "${INSTALL_DIR}"/bin/unlz4 "${INSTALL_DIR}"/bin/lz4)

    for LZ4_BIN in "${LZ4_BINS[@]}"; do

        [ -e "$LZ4_BIN" ] && rm "$LZ4_BIN"

    done

    make -j"${CORES}"

    make DESTDIR="${INSTALL_DIR}" PREFIX="" install

}