--- /dev/null
+/* if you have the gssapi libraries */
+#undef SHIBRESOLVER_HAVE_GSSAPI
+
+/* if you have the GNU gssapi libraries */
+#undef SHIBRESOLVER_HAVE_GSSGNU
+
+/* if you have the Heimdal gssapi libraries */
+#undef SHIBRESOLVER_HAVE_GSSHEIMDAL
+
+/* if you have the MIT gssapi libraries */
+#undef SHIBRESOLVER_HAVE_GSSMIT