Gentoo's Bugzilla –
Attachment 594714 Details for
Bug 699062kde-plasma/powerdevil-5.17.2 - CMake Error in daemon/CMakeLists.txt: Imported target "KF5::NetworkManagerQt" includes non-existent path "/usr/lib64/libffi-3.3_rc0/include" in its INTERFACE_INCLUDE_DIRECTORIES.