--- a/configure.ac
+++ b/configure.ac
@@ -210,7 +210,11 @@ dnl 		;;
 dnl 	esac
 dnl fi
 
-PKG_CHECK_MODULES(GnuTLS, [gnutls >= 2.12.0],[HAVE_GNUTLS=1],[HAVE_GNUTLS=0])
+AC_ARG_WITH([gnutls], AS_HELP_STRING([--with-gnutls], [Build with GnuTLS]))
+AS_IF([test "x$with_gnutls" = "xyes"], [
+	PKG_CHECK_MODULES(GnuTLS, [gnutls >= 2.12.0],[HAVE_GNUTLS=1],[HAVE_GNUTLS=0])
+])
+
 if test x$HAVE_GNUTLS = x1; then
 	AC_DEFINE(HAVE_GNUTLS, 1, [Define to 1 if you have a GnuTLS version of 2.12 or above])
 else