Download clang only for clang builds. [skip appveyor]
Download clang only for clang builds. [skip appveyor]
opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core