Source: http://cvsweb.openbsd.org/cgi-bin/cvsweb/ports/mail/postfix/snapshot/patches/?hideattic=1#dirlist
Upstream: no, upstream does not define a contribution workflow/platform
Reason: fix compatibility with LibreSSL

--- src/posttls-finger/posttls-finger.c.orig	Thu Sep  1 21:51:53 2016
+++ src/posttls-finger/posttls-finger.c	Thu Sep  1 21:54:23 2016
@@ -1511,7 +1511,8 @@ static int finger(STATE *state)
     return (0);
 }
 
-#if defined(USE_TLS) && OPENSSL_VERSION_NUMBER < 0x10100000L
+#if defined(USE_TLS) && \
+    ( OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER) )
 
 /* ssl_cleanup - free memory allocated in the OpenSSL library */
 
@@ -1958,7 +1959,8 @@ int     main(int argc, char *argv[])
     cleanup(&state);
 
     /* OpenSSL 1.1.0 and later (de)initialization is implicit */
-#if defined(USE_TLS) && OPENSSL_VERSION_NUMBER < 0x10100000L
+#if defined(USE_TLS) && \
+    ( OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER) )
     ssl_cleanup();
 #endif
 
--- src/tls/tls_client.c.orig	Thu Sep  1 21:53:17 2016
+++ src/tls/tls_client.c	Thu Sep  1 21:55:50 2016
@@ -299,7 +299,7 @@ TLS_APPL_STATE *tls_client_init(const TLS_CLIENT_INIT_
      */
     tls_check_version();
 
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
 
     /*
      * Initialize the OpenSSL library by the book! To start with, we must
@@ -441,7 +441,7 @@ TLS_APPL_STATE *tls_client_init(const TLS_CLIENT_INIT_
     /*
      * 2015-12-05: Ephemeral RSA removed from OpenSSL 1.1.0-dev
      */
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
 
     /*
      * According to the OpenSSL documentation, temporary RSA key is needed
--- src/tls/tls_dane.c.orig	Thu Sep  1 21:56:25 2016
+++ src/tls/tls_dane.c	Thu Sep  1 21:56:58 2016
@@ -2163,7 +2163,7 @@ static SSL_CTX *ctx_init(const char *CAfile)
     tls_param_init();
     tls_check_version();
 
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
     SSL_load_error_strings();
     SSL_library_init();
 #endif
--- src/tls/tls.h.orig	Sat Feb  6 15:09:41 2016
+++ src/tls/tls.h	Sun Feb 14 19:54:38 2016
@@ -89,7 +89,7 @@ extern const char *str_tls_level(int);
 #endif
 
  /* Backwards compatibility with OpenSSL < 1.1.0 */
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
 #define OpenSSL_version_num SSLeay
 #define OpenSSL_version SSLeay_version
 #define OPENSSL_VERSION SSLEAY_VERSION
--- src/tls/tls_rsa.c.orig	Thu Sep  1 21:57:15 2016
+++ src/tls/tls_rsa.c	Thu Sep  1 21:58:11 2016
@@ -57,7 +57,7 @@
  /*
   * 2015-12-05: Ephemeral RSA removed from OpenSSL 1.1.0-dev
   */
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
 
 /* tls_tmp_rsa_cb - call-back to generate ephemeral RSA key */
 
@@ -109,7 +109,7 @@ int     main(int unused_argc, char *const argv[])
     /*
      * 2015-12-05: Ephemeral RSA removed from OpenSSL 1.1.0-dev
      */
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
     RSA    *rsa;
 
     msg_vstream_init(argv[0], VSTREAM_ERR);
--- src/tls/tls_server.c.orig	Thu Sep  1 21:58:44 2016
+++ src/tls/tls_server.c	Thu Sep  1 21:59:40 2016
@@ -174,7 +174,7 @@ static const char server_session_id_context[] = "Postf
 #endif					/* OPENSSL_VERSION_NUMBER */
 
  /* OpenSSL 1.1.0 bitrot */
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 typedef const unsigned char *session_id_t;
 
 #else
@@ -377,7 +377,7 @@ TLS_APPL_STATE *tls_server_init(const TLS_SERVER_INIT_
      */
     tls_check_version();
 
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
 
     /*
      * Initialize the OpenSSL library by the book! To start with, we must
@@ -588,7 +588,7 @@ TLS_APPL_STATE *tls_server_init(const TLS_SERVER_INIT_
     /*
      * 2015-12-05: Ephemeral RSA removed from OpenSSL 1.1.0-dev
      */
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
 
     /*
      * According to OpenSSL documentation, a temporary RSA key is needed when