--- configure.dt	2018-12-29 16:23:02.355271146 +0100
+++ configure	2018-12-29 16:23:21.644060142 +0100
@@ -19116,6 +19116,8 @@
 
 
 if test $platform_win32 = yes; then :
+  HAVE_VISIBILITY_TRUE='#'
+  HAVE_VISIBILITY_FALSE=
 
 else