# endif
#endif /* !defined(wxUSE_SLIDER) */
+#ifndef wxUSE_SOUND
+# ifdef wxABORT_ON_CONFIG_ERROR
+# error "wxUSE_SOUND must be defined."
+# else
+# define wxUSE_SOUND 0
+# endif
+#endif /* !defined(wxUSE_SOUND) */
+
#ifndef wxUSE_SPINBTN
# ifdef wxABORT_ON_CONFIG_ERROR
# error "wxUSE_SPINBTN must be defined."