cmake_minimum_required(VERSION 3.4)

set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")

file(WRITE "${CMAKE_MODULE_PATH}/FindLIBNAME.cmake" [[
    include(FindPackageHandleStandardArgs)

    set(LIBNAME_VERSION_STRING 1.1.8)
    set(MY_LIB 1)

    find_package_handle_standard_args(LIBNAME
        FOUND_VAR LIBNAME_FOUND
        REQUIRED_VARS MY_LIB
        VERSION_VAR LIBNAME_VERSION_STRING
    )
]])

find_package(LIBNAME 1.1.9 REQUIRED)