Unset CMAKE_SHARED_MODULE_PREFIX to prevent building modules as lib<name>.so. Modules names are <name>.so.

CMakeLists.txt

@@ -97,6 +97,8 @@ file(GLOB extramodules extramodules/*)
 
 set(STATIC_MODULES "")
 
+set(CMAKE_SHARED_MODULE_PREFIX "")
+
 foreach(ext ${modules})
  if(EXISTS ${ext}/CMakeLists.txt)
   string(REGEX REPLACE .*/ "" modname ${ext})