rules() {
    if [[ -z $x11_start_build ]]; then
        x11_start_build="yes"
        remove_work_dir "$t/$x11_root"
        prepare_work_dir "$t/$x11_root"
    fi

    export CPPFLAGS=""
    export CFLAGS=""
    export CXXFLAGS=""
    export LDFLAGS=""

    pushd ${SLARM64_SOURCE_PATH}/$t/$x11_root 2>&1>/dev/null
    patching_files STATUS
    popd 2>&1>/dev/null
    pushd ${SLARM64_SOURCE_PATH}/$t/$x11_root/${WORK_DIR} 2>&1>/dev/null
    ./x11.SlackBuild ${X11_MODULE} ${p} 2>&1 | tee ${p}.build.log
    [[ ${PIPESTATUS[0]} == 1 ]] && ERROR=1
    move_pkg ${t} "x11-build/${p}"
    popd 2>&1>/dev/null
}

rules