gentoo-overlay/sys-fs/cryptsetup/files/cryptsetup-1.7.3-libressl.patch

diff -Naur cryptsetup-1.7.3.orig/lib/crypto_backend/crypto_openssl.c cryptsetup-1.7.3/lib/crypto_backend/crypto_openssl.c
--- cryptsetup-1.7.3.orig/lib/crypto_backend/crypto_openssl.c	2016-10-28 01:58:10.000000000 -0700
+++ cryptsetup-1.7.3/lib/crypto_backend/crypto_openssl.c	2016-11-02 13:38:46.094483756 -0700
@@ -73,7 +73,7 @@
 /*
  * Compatible wrappers for OpenSSL < 1.1.0
  */
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
 static EVP_MD_CTX *EVP_MD_CTX_new(void)
 {
 	EVP_MD_CTX *md = malloc(sizeof(*md));