--- ./src/lib-dcrypt/dcrypt-openssl.c.orig	2017-02-25 20:07:40.000000000 +0100
+++ ./src/lib-dcrypt/dcrypt-openssl.c	2017-02-25 20:07:52.000000000 +0100
@@ -69,7 +69,7 @@
   2<tab>key algo oid<tab>1<tab>symmetric algo name<tab>salt<tab>hash algo<tab>rounds<tab>E(RSA = i2d_PrivateKey, EC=Private Point)<tab>key id
 **/
 
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined (LIBRESSL_VERSION_NUMBER)
 #define EVP_PKEY_get0_EC_KEY(x) x->pkey.ec
 #define EVP_PKEY_get0_RSA(x) x->pkey.rsa
 #define OBJ_length(o) ((o)->length)
@@ -92,7 +92,7 @@
 struct dcrypt_context_hmac {
 	pool_t pool;
 	const EVP_MD *md;
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined (LIBRESSL_VERSION_NUMBER)
 	HMAC_CTX *ctx;
 #else
 	HMAC_CTX ctx;
@@ -429,7 +429,7 @@
 void dcrypt_openssl_ctx_hmac_destroy(struct dcrypt_context_hmac **ctx)
 {
 	pool_t pool = (*ctx)->pool;
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined (LIBRESSL_VERSION_NUMBER)
 	if ((*ctx)->ctx) HMAC_CTX_free((*ctx)->ctx);
 #else
 	HMAC_cleanup(&((*ctx)->ctx));
@@ -472,7 +472,7 @@
 {
 	int ec;
 	i_assert(ctx->md != NULL);
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined (LIBRESSL_VERSION_NUMBER)
 	ctx->ctx = HMAC_CTX_new();
 	if (ctx->ctx == NULL) return dcrypt_openssl_error(error_r);
 	ec = HMAC_Init_ex(ctx->ctx, ctx->key, ctx->klen, ctx->md, NULL);
@@ -486,7 +486,7 @@
 bool dcrypt_openssl_ctx_hmac_update(struct dcrypt_context_hmac *ctx, const unsigned char *data, size_t data_len, const char **error_r)
 {
 	int ec;
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined (LIBRESSL_VERSION_NUMBER)
 	ec = HMAC_Update(ctx->ctx, data, data_len);
 #else
 	ec = HMAC_Update(&(ctx->ctx), data, data_len);
@@ -500,7 +500,7 @@
 	int ec;
 	unsigned char buf[HMAC_MAX_MD_CBLOCK];
 	unsigned int outl;
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined (LIBRESSL_VERSION_NUMBER)
 	ec = HMAC_Final(ctx->ctx, buf, &outl);
 	HMAC_CTX_free(ctx->ctx);
 	ctx->ctx = NULL;
@@ -2135,7 +2135,7 @@
 	long len = BIO_get_mem_data(b, &ptr);
 	unsigned int hlen = sizeof(buf);
 	/* then hash it */
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined (LIBRESSL_VERSION_NUMBER)
 	EVP_MD_CTX *ctx = EVP_MD_CTX_new();
 #else
 	EVP_MD_CTX *ctx = EVP_MD_CTX_create();
@@ -2149,7 +2149,7 @@
 		buffer_append(result, buf, hlen);
 		res = TRUE;
 	}
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined (LIBRESSL_VERSION_NUMBER)
 	EVP_MD_CTX_free(ctx);
 #else
 	EVP_MD_CTX_destroy(ctx);