ecm provides CMake files:

    # Selecting particular find modules
    find_package(ECM CONFIG REQUIRED)
    ecm_use_find_modules(
        DIR "${CMAKE_BINARY_DIR}/cmake"
        MODULES FindEGL.cmake
        NO_OVERRIDE
    )
    list(PREPEND CMAKE_MODULE_PATH "${CMAKE_BINARY_DIR}/cmake")

    # Everything, via find_package() and include()
    find_package(ECM CONFIG REQUIRED)
    list(PREPEND CMAKE_MODULE_PATH ${ECM_MODULE_PATH})
    include(KDEInstallDirs)
    include(KDECompilerSettings)
    include(KDECMakeSettings)