Disable check for c++11-long-long flags, since MOAB does not really use C++11...

Disable check for c++11-long-long flags, since MOAB does not really use C++11 internally anyway. This must have been an oversight

config/CheckCompilerFlags.cmake

@@ -31,7 +31,8 @@ if ( CMAKE_COMPILER_IS_GNUCXX OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang") )
   FORCE_ADD_FLAGS(CMAKE_C_FLAGS "${MOAB_CXX_FLAGS}")
   FORCE_ADD_FLAGS(CMAKE_Fortran_FLAGS "${MOAB_CXX_FLAGS}")
   ENABLE_IF_SUPPORTED(MOAB_CXX_FLAGS "-fpermissive")
-  ENABLE_IF_SUPPORTED(MOAB_CXX_FLAGS "-Wno-c++11-long-long")
+  # Need to enable or check for this only if user asks for C++11 support
+  # ENABLE_IF_SUPPORTED(MOAB_CXX_FLAGS "-Wno-c++11-long-long")
   if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.8)
     ENABLE_IF_SUPPORTED(MOAB_CXX_FLAGS "-Wno-unused-local-typedefs")
   endif()