Re: Win32 libltdl issue

[Howard Chu]

Ralf Wildenhues wrote:

> In branch-2-0 and HEAD we actually don't use the lt_*alloc/free
> interface any more, seems for good reason.  We do still define a stub
> interface for backward compatibility, but given these arguments, I think
> we can safely delete them completely, or at least hide them on win32.
>
> OTOH, we now have a couple more objects we export[1], and from your
> explanations I can only gather that this needs to be fixed.  It might
> need an incompatible change on branch-2-0 (which affects the interfaces
> added on the branch).
>
> Related question: Do I have to specify the declspec(export) in the same
> translation unit in which I define the function?  This is what bugs us
> in mingw ATM.  Specifying the declspec in another translation unit
> seems to work with cygwin but fail on mingw.  (Of course, the unit gets
> linked into the same lib in any case).

Yes, I think so, but not entirely sure. Since all the code I work with 
always puts the declarations in a header file that every source file 
includes, it has never been an issue for me.

I see that more recent versions of cygwin/mingw appear to have made 
using declspec unnecessary:

http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/gnu-linker/win32.html

I don't know how others would feel about it, but perhaps you could just 
say "version >= XX of cygwin/mingw binutils are required" and forget 
about all of these issues.

> Thanks for your helpful comments,
> Ralf
>
> [1] lt__error_strings, *_preloaded_symbols, maybe lt__last_error as
> well.


--
  -- Howard Chu
  Chief Architect, Symas Corp.       Director, Highland Sun
  http://www.symas.com               http://highlandsun.com/hyc
  Symas: Premier OpenSource Development and Support