diff --git a/config.h.cmake.in b/config.h.cmake.in
index 54f6035..a2da3d2 100644
--- a/config.h.cmake.in
+++ b/config.h.cmake.in
@@ -5,6 +5,12 @@
 #cmakedefine HAVE_STRCASECMP
 #cmakedefine HAVE_STRNCASECMP
 #cmakedefine HAVE_VSNPRINTF
+#cmakedefine HAVE_OLD_GNUTLS
+#cmakedefine HAVE_GNUTLS_X509_CRT_PRINT
+#cmakedefine HAVE_GNUTLS_CRT_T
+#cmakedefine HAVE_GNUTLS_DATUM_T
+#cmakedefine HAVE_GNUTLS_PK_ALGORITHM_T
+#cmakedefine HAVE_GNUTLS_SIGN_ALGORITHM_T
 
 /* MS Visual Studio 2008 and newer doesn't know ssize_t */
 #if defined(HAVE_GNUTLS) && defined(WIN32) && !defined(__MINGW32__)