Re: Creating shared and static libraries with convenience libraries

[Bob Friesenhahn]

On Sun, 28 Jun 2009, Charles Wilson wrote:

> > Interesting.  I think that it is assumed that "PIC" code will work in a
> > static archive.  Apparently this is a wrong assumption for "decorated"
> > DLL code.  Most open source projects ported to Windows rely on GCC's
> > automatic DLL import feature.
>
> Unless you're using MinGW to build a DLL (that exports data items?), and
> is intended for use with MSVC.  Or your name is Bruno, and you don't
> like auto-import:
> http://www.haible.de/bruno/woe32dll.html

As a data point, I believe that GraphicsMagick explicitly dll exports 
functions and data when it is built under MinGW, however it has not 
used convenience libraries in its build for many years since they are 
so archaic.  It does not explicitly explicitly dll export under 
Cygwin.

I don't currently have a MinGW DLL build of GraphicsMagick using GCC 
4.X.  I will try to do it.

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