The compilation using GCC + Clang-Tidy succeeded for me and Sybren
(with some linker caveats for Sybren) but seems that it is doable
to make GCC + Clang-Tidy to officially work for Blender.
Now it should be possible to enable Clang-Tidy doing something like
make developer debug BUILD_CMAKE_ARGS='-DWITH_CLANG_TIDY=ON'