[boost] Re: serialization - build shared libs

From: Neal D. Becker (ndbecker2_at_[hidden])
Date: 2004-10-19 08:28:45

martin.ecker_at_[hidden] wrote:

> Hello,
> 
> Russell Hind wrote:
>> I have successfully built serialization as dlls under bcc32 by
>> duplicating the two 'lib' sections in the JamFile and renaming them to
>> dll and then adding the <dll>libboost_serialization and
>> <dll>libboost_wserialization to the install and stage sections.
> 
> Unfortunately, simply building boost::serialization as DLL under
> Windows is not enough because the extended RTTI objects for a class
> are duplicated in each module/DLL. This is because the static extended
> type info instances are defined in header files, and under Windows
> this will cause an instance to be created for each module that
> includes that header file.
> 
> This effectively means that serializing a class defined in one DLL
> from another DLL will not work properly. I've made some changes to
> boost::serialization that allow DLL builds and allow using the library
> with
> modules/DLLs (even when they are explicitly loaded/unloaded multiple
> times), but these changes have not yet made it into CVS.
> 

Thanks!

I suggest support for building shared libs even without the changes, because
from my limited testing, it will work on some systems.  (Don't penalize
working systems because some others don't work)