Subject: Re: [boost] [any] new version
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2011-09-02 06:44:27
On 01/09/2011 18:46, Andrey Semashev wrote:
> On 09/01/2011 12:30 PM, Mathias Gaunard wrote:
>> On 01/09/2011 05:26, Andrey Semashev wrote:
>>
>>> In addition, on most platforms there will be multiple instances of
>>> type_id<T>::value for a single given T if the application uses
>>> type_id<T> in multiple modules.
>>
>> That's not a problem, type_id<T>::value is a weak symbol.
>
> It doesn't matter. I wasn't speaking of different translation units, but
> different modules (i.e. dll, so, dylib). Unless you do explicit
> exporting/importing of this symbol, you'll have separate instances.
Shared objects do not work by exporting/importing, but with visibility.
The default visibility will make it work correctly.
On windows though, there is no good solution to this.