In file included from /in/call.cpp:1:
In file included from /in/dlist.h:75:
/in/dlist_impl.h:4:17: error: using directive refers to implicitly-defined namespace 'std' [-Werror]
using namespace std;
                ^
1 error generated.
/in/Compile/Makefile:39: recipe for target 'buildCall' failed
make: *** [buildCall] Error 1