Re: recursive ltdl causes symbols to disappear from .dll.a on mingw32

[Bob Friesenhahn]

On Thu, 6 Sep 2012, Brice Goglin wrote:
> > For GraphicsMagick's loadable modules I pass these extra options to
> > libtool:
> >
> > -no-undefined -export-symbols-regex ".*" -shared -module -avoid-version
> >
> > Notice the wildcard specification for exported symbols.
>
> Interesting.
> Would this export all my symbols, including the internal ones that are
> not public?

Yes, this is pretty lame in that regard.  I believe that you can 
specify the exact symbols you want exported.  If the symbols were all 
nicely named according to a convention, then the simple wildcard 
approach would be more convenient than a file listing exported 
symbols.

> The good thing about the dllexport attribute is that you only place it
> in front of symbols that must be public.

Yes.  In the GraphicsMagick MinGW build (but not Cygwin) we use 
dllexport symbol decorations as well.

Bob
--
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/