+AC_ARG_WITH([alsa],
+ [AS_HELP_STRING([--without-alsa],
+ [do not build with ALSA support])],
+ [want_alsa=$withval])
+AC_ARG_WITH([oss],
+ [AS_HELP_STRING([--without-oss],
+ [do not build with OSS support])],
+ [want_oss=$withval])
+AC_ARG_WITH([coreaudio],
+ [AS_HELP_STRING([--without-coreaudio],
+ [do not build with Core Audio support])],
+ [want_coreaudio=$withval])
+