The GPL-2.0 license is incompatible with the Apache 2.0 license used by some of the included dependencies (e.g. 3rdparty/flatbuffers, 3rdparty/SPIRV) because of patent and infringement differences. I was alerted to this by the openSUSE legaldb team while packaging rpcs3 for openSUSE.
GPLv3 is compatible with Apache 2.0. Could rpcs3 switch to GPLv3 instead? As it stands there is a license violation.