RE: [boost] BOOST_LOG & dlls

From: Terence Wilson (tez_at_[hidden])
Date: 2005-05-09 12:06:45

> -----Original Message-----
> From: boost-bounces_at_[hidden] 
> [mailto:boost-bounces_at_[hidden]] On Behalf Of Dirk Griffioen
> Sent: Monday, May 09, 2005 8:18 AM
> To: boost_at_[hidden]
> Subject: [boost] BOOST_LOG & dlls
> 
> Hi John,
> 
> (I don't know if you get this but anyway).
> 
> If I define & enable a log in a .lib but use it in a .dll 
> somewhere else in the app (via declare in a .hpp file), I 
> don't get no output from the
> dll:
> 
> 	app.exe
> 	/   \
> log.lib  stuff.dll
> 
> (Compiles/links fine and the exe has output - but the dll has not.)
> 
> Somehow, I want to avoid having a 'DECLARE + setup_logging' 
> in all my dlls.
> 
> Am I missing something?
> 

You need to use __declspec(dllexport) & __declspec(dllimport) to share the
variable.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html
/_core_export_from_a_dll_using___declspec.28.dllexport.29.asp