add -Wmissing-declarations to cflags

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 93ee7874e0d9bd22af3dc51eac22b6ba73a018ee..00b3b410c87530773b741a6bf6e5a32e011bb143 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 2.6)
 
 PROJECT(ubox C)
-ADD_DEFINITIONS(-Os -Wall -Werror --std=gnu99 -g3)
+ADD_DEFINITIONS(-Os -Wall -Werror --std=gnu99 -g3 -Wmissing-declarations)
 
 OPTION(BUILD_LUA "build Lua plugin" ON)