Merge pull request #372 from christian-rauch/win32_lean_and_mean

compile with WIN32_LEAN_AND_MEAN on Windows

Author: christian-rauch

CMakeLists.txt

@@ -34,6 +34,10 @@ set(default_build_type "Release")
 
 SET(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
 
+if(WIN32)
+    add_compile_definitions(WIN32_LEAN_AND_MEAN)
+endif()
+
 if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
     message(STATUS "Setting build type to '${default_build_type}' as none was specified.")
     set(CMAKE_BUILD_TYPE "${default_build_type}" CACHE  STRING "Choose the type of build." FORCE)