THRIFT-4081 broke compiling with gcc 4.6.x
diff --git a/build/cmake/DefinePlatformSpecifc.cmake b/build/cmake/DefinePlatformSpecifc.cmake
index 28cc5c2..e8479bc 100644
--- a/build/cmake/DefinePlatformSpecifc.cmake
+++ b/build/cmake/DefinePlatformSpecifc.cmake
@@ -100,7 +100,7 @@
 
 # GCC and Clang: use C++11
 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-  if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "4.6")
+  if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "4.6.4")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
   endif()
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2 -Wall -Wextra -pedantic")