Check if we are using LibreSSL instead of OpenSSL

CMakeLists.txt

@@ -81,7 +81,7 @@ IF(WITH_SIGNCODE)
   MARK_AS_ADVANCED(SIGN_OPTIONS)
 ENDIF()
 
-SET(MARIADB_CONNECTOR_C_COPYRIGHT "2013-2016 MariaDB Corporation Ab")
+SET(MARIADB_CONNECTOR_C_COPYRIGHT "2013-2017 MariaDB Corporation Ab")
 
 IF(WITH_RTC)
   SET(RTC_OPTIONS "/RTC1 /RTCc")
@@ -260,7 +260,13 @@ IF(NOT WITH_SSL STREQUAL "OFF")
       SET(SSL_LIBRARIES ${OPENSSL_SSL_LIBRARY} ${OPENSSL_CRYPTO_LIBRARY})
       INCLUDE_DIRECTORIES(BEFORE ${OPENSSL_INCLUDE_DIR})
       MESSAGE1(OPENSSL_VERSION "OpenSSL version: ${OPENSSL_VERSION}")
-      SET(TLS_LIBRARY_VERSION "OpenSSL ${OPENSSL_VERSION}")
+
+      CHECK_SYMBOL_EXISTS(LIBRESSL_VERSION_NUMBER "${OPENSSL_INCLUDE_DIR}/openssl/opensslv.h" HAVE_LIBRESSL)
+      IF(HAVE_LIBRESSL)
+        SET(TLS_LIBRARY_VERSION "LibreSSL ${OPENSSL_VERSION}")
+      ELSE()
+        SET(TLS_LIBRARY_VERSION "OpenSSL ${OPENSSL_VERSION}")
+      ENDIF()
     ELSE()
       MESSAGE1(OPENSSL_VERSION "OpenSSL not found")
     ENDIF()