CMAKE_BUILD_TYPE set to Release by default
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6d3666b..3d2b030 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,9 @@
 cmake_minimum_required(VERSION 3.0)
 
+if(NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE Release)
+endif()
+
 project(FLAC VERSION 1.3.2) # HOMEPAGE_URL "https://www.xiph.org/flac/")
 
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")