Fix warnings

CMakeLists.txt

@@ -142,7 +142,7 @@ else(MSVC)
     add_definitions(-DMSHADOW_USE_F16C=0)
   endif()
   set(CMAKE_POSITION_INDEPENDENT_CODE ON)
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wno-unknown-pragmas -Wno-sign-compare")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wno-unknown-pragmas -Wno-sign-compare -Wno-unused-local-typedefs")
   if ("${CMAKE_CXX_COMPILER_ID}" MATCHES ".*Clang$")
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-braced-scalar-init")
   endif()

include/mxnet/executor.h

@@ -28,6 +28,8 @@
 
 #include <dmlc/base.h>
 #include <vector>
+#include <unordered_map>
+#include <unordered_set>
 #include <memory>
 #include <map>
 #include <string>