Marcus Lindblom wrote:
> Patrick Hartling wrote:
>> I have made some big progress in getting PyOpenSG updated to the OpenSG
>> 2.0 trunk, but I have run up against problems related to class templates
>> with static data members.
>
> [snip]
>
>> My hope is that this can be fixed
>> with a GCC compiler option or something that is similarly non-invasive
>> to the OpenSG code in question. Does anyone have any ideas or
>> suggestions about how this can be resolved?
>
> Have you tried the python-c++ list? It's hard to think you're the first
> one to encounter this.
>
> Just offer something: On Windows, you can tell the compiler that a
> certain template instantiation is to be exported from a dynamic library.
> I don't know if something similar is possible with GCC, but I've heard
> rumours lately about explicit export and automatic hiding there.
No, I hadn't asked there yet. I was just about to send them a message when I
tried something that seems to resolve things in a fairly clean manner. If I
modify the class declaration to be the following, things appear to be
working for me:
template<typename T>
class C
{
public:
// Leave initialization here.
static const int static_member = 0;
};
// Add static data member definition statement;
template<typename T> const int C<T>::static_member;
If I hadn't been so focused on the full type instantiation, I might have
tried this sooner. I am running a build right now to test this.
-Patrick
--
Patrick L. Hartling
Senior Software Engineer, Priority 5
http://www.priority5.com/
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