-- *** Will build version 0.4.1 *** -- IRRLICHT_SOURCE_DIR = -- IRRLICHT_INCLUDE_DIR = /usr/include/irrlicht -- IRRLICHT_LIBRARY = /usr/lib/libIrrlicht.a -- Found IRRLICHT: /usr/lib/libIrrlicht.a -- GetText disabled -- Could NOT find OpenAL (missing: OPENAL_LIBRARY OPENAL_INCLUDE_DIR) -- Found VORBIS: /usr/include -- Sound enabled, but OpenAL not found! CMake Error at src/CMakeLists.txt:69 (message): Sound enabled, but cannot be used. To continue, either fill in the required paths or disable sound. (-DENABLE_SOUND=0)