AC_SUBST(OSS_LIBS)
AM_CONDITIONAL([HAVE_OSS], [test "${have_oss}" = "yes"])
+dnl
+dnl OpenBSD sndio module
+dnl
+AC_ARG_ENABLE([sndio],
+ [AS_HELP_STRING([--disable-sndio],
+ [support the OpenBSD sndio (default auto)])],, [
+ AS_IF([test "$SYS" = "opensd"], [
+ enable_sndio="yes"
+ ])
+])
+have_sndio="no"
+AS_IF([test "$enable_sndio" != "no"], [
+ AC_CHECK_HEADER([sndio.h], [
+ have_sndio="yes"
+ ])
+])
+AM_CONDITIONAL([HAVE_SNDIO], [test "${have_sndio}" = "yes"])
+
dnl
dnl win32 waveOut plugin
dnl