openal cmake error

-- *** 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)