+AC_SUBST([GhcLibsWithOpenGL])
+AC_SUBST([GhcLibsWithGLUT])
+
+dnl ** Enable the building of the OpenAL binding?
+dnl --------------------------------------------------------------
+AC_ARG_ENABLE([openal],
+ AC_HELP_STRING([--enable-openal],
+ [Build OpenAL binding [[default=autodetect]]]),
+ [GhcLibsWithOpenAL=$enableval],
+ [GhcLibsWithOpenAL=yes])
+
+# This is silly! Alas, "YES" and "NO" are currently our standard...
+GhcLibsWithOpenAL=`echo $GhcLibsWithOpenGL | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+AC_SUBST([GhcLibsWithOpenAL])