--- strongswan-5.9.5.orig/src/libstrongswan/plugins/openssl/openssl_x_diffie_hellman.c	2022-01-08 12:54:02.000000000 +0100
+++ strongswan-5.9.5/src/libstrongswan/plugins/openssl/openssl_x_diffie_hellman.c	2022-03-21 16:41:08.744944336 +0100
@@ -17,7 +17,7 @@
 
 /* basic support for X25519 was added with 1.1.0a, but we require features (e.g.
  * to load the keys) that were only added with 1.1.1 */
-#if OPENSSL_VERSION_NUMBER >= 0x1010100fL && !defined(OPENSSL_NO_ECDH)
+#if OPENSSL_VERSION_NUMBER >= 0x1010100fL && !defined(OPENSSL_NO_ECDH) && !defined(LIBRESSL_VERSION_NUMBER)
 
 #include "openssl_x_diffie_hellman.h"
 #include "openssl_util.h"