AM_CONDITIONAL(PLATFORM_DARWIN, test x$platform_darwin = xyes)
AM_CONDITIONAL(PLATFORM_ANDROID, test x$platform_android = xyes)
+# Defined for all targets/platforms using classic Windows API support.
+AC_DEFINE(HAVE_CLASSIC_WINAPI_SUPPORT, 1, [Use classic Windows API support])
+AC_DEFINE(HAVE_UWP_WINAPI_SUPPORT, 0, [Don't use UWP Windows API support])
+
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(long)