Remove libavresample restriction.

CMakeLists.txt

@@ -151,15 +151,10 @@ if( SWRESAMPLE_FOUND )
     add_definitions(-DHAVE_LIBSWRESAMPLE)
     set(SOUND_INPUT_LIBRARY ${FFMPEG_LIBRARIES} ${SWRESAMPLE_LIBRARIES})
 else()
-    # restrict the use of libavresample to debian based system only
-    if(EXISTS "/etc/debian_version")
-        if( AVRESAMPLE_FOUND )
-            set(SOUND_INPUT_LIBRARY ${FFMPEG_LIBRARIES} ${AVRESAMPLE_LIBRARIES})
-        else()
-            message(FATAL_ERROR "Libav libavresample required, but not found!")
-        endif()
+    if( AVRESAMPLE_FOUND )
+        set(SOUND_INPUT_LIBRARY ${FFMPEG_LIBRARIES} ${AVRESAMPLE_LIBRARIES})
     else()
-        message(FATAL_ERROR "FFmpeg libswresample required, but not found!")
+        message(FATAL_ERROR "Install either libswresample (FFmpeg) or libavresample (Libav).")
     endif()
 endif()