--- /dev/null
+--- a/configure.ac
++++ b/configure.ac
+@@ -943,6 +943,7 @@ then
+ AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_ALWAYS_KEEP_SNI"
+ AM_CFLAGS="$AM_CFLAGS -DHAVE_EX_DATA"
+ AM_CFLAGS="$AM_CFLAGS -DHAVE_EXT_CACHE"
++ AM_CFLAGS="$AM_CFLAGS -DHAVE_SECRET_CALLBACK"
+ AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_EITHER_SIDE"
+ AM_CFLAGS="$AM_CFLAGS -DOPENSSL_EXTRA_X509_SMALL"
+