diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1705cc00e..fde1b9415 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -135,6 +135,7 @@ endif()
 
 add_definitions(/D__STDC_FORMAT_MACROS)
 add_definitions(/DUNICODE)
+add_definitions(/DRAPIDJSON_SSE2)
 #add_definitions(/DAPP_DEBUG)
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")
@@ -168,6 +169,10 @@ if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
 
     add_definitions(/D_GNU_SOURCE)
 
+    if (${CMAKE_VERSION} VERSION_LESS "3.1.0")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
+    endif()
+
     #set(CMAKE_C_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -gdwarf-2")
 
 elseif (CMAKE_CXX_COMPILER_ID MATCHES MSVC)