diff --git a/CMakeLists.txt b/CMakeLists.txt
index 439e26a..05416d8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -187,6 +187,7 @@ endforeach(flag ${test_flags})
 
 if(MSVC)
     set(CMAKE_DEBUG_POSTFIX "d")
+    add_definitions(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS /wd4996)
 endif()
 
 option(ld-version-script "Enable linker version script" ON)