+PKG_CHECK_MODULES(XINPUT, x11 xext [xi >= 1.2] [inputproto >= 1.5])
+
+# XI2 support
+PKG_CHECK_MODULES(XI2, [xi >= 1.2.99],
+ HAVE_XI2="yes"; AC_DEFINE(HAVE_XI2, 1, "foo"),
+ HAVE_XI2="no");
+AM_CONDITIONAL(HAVE_XI2, [ test "$HAVE_XI2" = "yes" ])
+