[Boost-users] BOOST_STATIC_CONST

From: Michael Held (michael.held_at_[hidden])
Date: 2006-11-30 13:03:02

hi,

I am using BOOST_STATIC_CONST for static class members of a base class.
I have following situation:

template <int T>
class A
{
   typedef typename MyType<T>::value_type value_type;
   BOOST_STATIC_CONST(typename value_type::some_type, MY_CONSTANT = 0);
};

template <int T>
class B : public A<T>
{
   typedef A<T> Base;
   typedef typename Base::value_type value_type;
   BOOST_STATIC_CONST(typename value_type::some_type, MY_CONSTANT = 
Base::MY_CONSTANT);
};

or

template <int T>
class B : public A<T>
{
   typedef A<T> Base;
   typedef typename Base::value_type value_type;
   using Base::MY_CONSTANT;
};

for both cases I got a linker error:
/usr/bin/ld: Undefined symbols:
B<0>::MY_CONSTANT

what am I doing wrong?
I am using darwin gcc4.0.1 and Boost from CVS

thanks a lot!
michael