Issue with nil on MacOS and C++

[pizzafilms]

I'm getting an "Expected unqualified-id" error in nil_decl.hpp on the line:

typedef nil_t nil;

All I have is:

#include <msgpack.hpp>

[redboltz]

On travis-ci https://travis-ci.org/msgpack/msgpack-c/jobs/384509443#L4 works.

What version of MacOS, msgpack-c, and compiler are you using?

[mxmlnkn]

As a workaround, prepend #define MSGPACK_DISABLE_LEGACY_NIL before including msgpack.hpp, or add -DMSGPACK_DISABLE_LEGACY_NIL to your compile arguments.

#define MSGPACK_DISABLE_LEGACY_NIL
#include <msgpack.hpp>