diff --git a/CMakeLists.txt b/CMakeLists.txt
index 24dfcbb956..b77755139a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -50,6 +50,7 @@ set(CMAKE_SHARED_LIBRARY_PREFIX "")
 set(CMAKE_SHARED_MODULE_PREFIX "")
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 include(GNUInstallDirs)
+include(CheckSymbolExists)
 add_compile_definitions(_GNU_SOURCE)
 add_definitions(-D_FILE_OFFSET_BITS=64)