Created attachment 431798 [details] build.log Error message: CMake Error at cmake/PhononQt5.cmake:64 (find_package): Could not find a package configuration file provided by "ECM" (requested version 1.7.0) After installing extra-cmake-modules phonon successfully finishes compilation.
Thanks. https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=b136d707464d2052d8442d8d8804b848a3a36060