-AC_SEARCH_LIBS([glBegin], [GL],,
- [AC_MSG_ERROR([libGL is required])])
+AC_SEARCH_LIBS([gluPerspective], [GLU MesaGLU glu32],,
+ [AC_MSG_ERROR([GLU is required])])
+
+AC_SEARCH_LIBS([alGenBuffers], [openal openal32],,
+ [AC_MSG_ERROR([OpenAL is required])])
+
+AC_SEARCH_LIBS([alutInit], [alut],,
+ [AC_MSG_ERROR([alut is required])])