297f965052
If -DBUILTIN_CHANNELS=OFF is supplied to cmake, auxiliary channel modules are built as plugins, that are loaded from $LIBDIR/freerdp as shared libs. This patch fixes the linkage of these plugins by taking inter-channel dependencies of this separation into account. If BUILTIN_CHANNELS=ON, these channel modules are linked directly into the main modules. Therefore, the linking of the plugins is conditioned accordingly.