Re: [sigc] Compiling libsic++ as a DLL under Windows

[Martin Schulze <martin-ml hippogriff de>]

Am 04.08.2004 09:47:24 schrieb(en) Martin Schulze:
> Am 03.08.2004 20:03:48 schrieb(en) Martin Schulze:
> > Hi!
> >
> > James attached a patch solving these problems to the bugzilla bug  
> > report. I've just committed to cvs. Please try whether it is working  
> > for you and confirm! If further modifications of the project file  
> > are necessary for your needs, please let us know.
>
> I just remembered that I forgot to 'cvs add' the sigc++config.h file  
> so
> it probably won't work out-of-the-box. Please stand by until tonight,  
> when I have access to cvs again ...

Done.

Martin

> Regards,
>
>  Martin
>
> > Thanks!
> >
> > Regards,
> >
> >  Martin
> >
> >
> > Am 29.07.2004 16:46:24 schrieb(en) Martin Schulze:
> > > Hi Arnaud!
> > >
> > > We would happily accept a patch against cvs. Please modify the  
> > > affected header files to include sigc++config.h.
> > > Don't forget that most header files get generated from .m4 files in  
> > > the macros/ subdirectories; these are the files to modify.
> > >
> > > sigc++config.h is also generated by the configure script, so please  
> > > add the #defines in sigc++config.h.in. We already need a patch that  
> > > provides (and makes the library use) a pregenerated sigc++config.h  
> > > in the MSVC project directory. Maybe you can also include this in  
> > > your patch.
> > >
> > > Thanks!
> > >
> > >  Martin
> > >
> > >
> > > Am 28.07.2004 11:34:07 schrieb(en) Arnaud Debaene:
> > > > I am trying to build a Win32 DLL from libsigc++ (see
> > > > http://lists.gnome.org/archives/libsigc-list/2004-July/msg00027.html
> > > > for
> > > > another message on the subject).
> > > >
> > > >
> > > >
> > > > Among other things, I need to export some symbols from the DLL  
> > > > using
> > > > the
> > > > __declspec(dllexport) Microsoft stuff. I have therefore defined a
> > > > SIC_API macro as suggested by James Lin.
> > > >
> > > >
> > > >
> > > > The macro is used on several places:
> > > >
> > > > connection.h :
> > > >
> > > >    l 39 : struct SIGC_API connection
> > > >
> > > >
> > > >
> > > > trackable.h :
> > > >
> > > >    l 35 : struct SIGC_API trackable_callback
> > > >
> > > >    l 49 : struct SIGC_API signal_base : public trackable
> > > >
> > > >    l 89 : struct SIGC_API trackable
> > > >
> > > >
> > > >
> > > > signal_base.h :
> > > >
> > > >    l 43 : struct SIGC_API signal_impl
> > > >
> > > >    l 139 : struct SIGC_API signal_exec
> > > >
> > > >    l 195 : struct SIGC_API signal_base : public trackable
> > > >
> > > >
> > > >
> > > > adaptors\lambda\select.h :
> > > >
> > > >    l 335 : SIGC_API extern const lambda<internal::lambda_select1>  
> > > > _1;
> > > >
> > > >              SIGC_API extern const lambda<internal:: 
> > > > lambda_select2>
> > > > _2;
> > > >
> > > >              SIGC_API extern const lambda<internal:: 
> > > > lambda_select3>
> > > > _3;
> > > >
> > > >              SIGC_API extern const lambda<internal:: 
> > > > lambda_select4>
> > > > _4;
> > > >
> > > >              SIGC_API extern const lambda<internal:: 
> > > > lambda_select5>
> > > > _5;
> > > >
> > > >              SIGC_API extern const lambda<internal:: 
> > > > lambda_select6>
> > > > _6;
> > > >
> > > >              SIGC_API extern const lambda<internal:: 
> > > > lambda_select7>
> > > > _7;
> > > >
> > > >
> > > >
> > > > Functors\slot_base.h :
> > > >
> > > >    l 52 : struct SIGC_API slot_rep : public trackable
> > > >
> > > >    l 123 : struct SIGC_API slot_do_bind
> > > >
> > > >    l 141 : struct SIGC_API slot_do_unbind
> > > >
> > > >    l 206 : class SIGC_API slot_base : public functor_base
> > > >
> > > >
> > > >
> > > > These are all the symbols I have identified that need to be  
> > > > exported
> > > > from the DLL (basically, that is everything that is non template).
> > > >
> > > >
> > > >
> > > > Now, the definition of the SIGC_API macro should be (according to  
> > > > MS
> > > > standard way of doing things):
> > > >
> > > >
> > > >
> > > > #ifndef SIGC_API
> > > >
> > > > #ifdef _MSC_VER    //Visual C++ only
> > > >
> > > > #ifdef SIGC_DLL_EXPORT
> > > >
> > > > #define SIGC_API __declspec(dllexport)
> > > >
> > > > #else
> > > >
> > > > #define SIGC_API __declspec(dllimport)
> > > >
> > > > #endif
> > > >
> > > > #else
> > > >
> > > > #define SIGC_API
> > > >
> > > > #endif
> > > >
> > > > #endif
> > > >
> > > >
> > > >
> > > > And SIGC_DLL_EXPORT should be defined in the Visual C++ project  
> > > > file
> > > > used to build the DLL.
> > > >
> > > >
> > > >
> > > > My question is: *WHERE* do I put the SIGC_MACRO definition?
> > > > sigc++_config.h sounds like a good candidate, but it isn't  
> > > > #included
> > > > by
> > > > all the headers where this macro is used. In fact there doesn't  
> > > > seems
> > > > to
> > > > be a common header included by everyone where I could put it.  In
> > > > LibSigC++ 1.2, it was done in sigcconfig.h, but there does not  
> > > > seems
> > > > to
> > > > be an equivalent in version 2.
> > > >
> > > >
> > > >
> > > > Thanks for any idea.
> > > >
> > > >
> > > >
> > > > PS: Once this problem solved, I could post an updated version of  
> > > > the
> > > > Visual C++ project, if it may help.
> > > >
> > > >
> > > >
> > > >
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