+case $cf_cv_system_name in
+(*mingw32*|*mingw64*|*-msvc*)
+ AC_MSG_CHECKING(if you want experimental-Windows driver)
+ AC_ARG_ENABLE(exp-win32,
+ [ --enable-exp-win32 compile with experimental-Windows],
+ [with_exp_win32=$enableval],
+ [with_exp_win32=no])
+ AC_MSG_RESULT($with_exp_win32)
+ test "x$with_exp_win32" = xyes && AC_DEFINE(EXP_WIN32_DRIVER,1,[Define to 1 to compile with experimental win32 driver])
+ ;;
+esac
+