Re: Errors and questions on clutter gtk with mingw-w64

[Eugen Dedu <Eugen Dedu pu-pm univ-fcomte fr>]

On 28/01/14 16:06, Eugen Dedu wrote:
> Hi all,
>
> I have a very strange error when building clutter gtk with mingw-w64:
>
>    CCLD     libclutter-gtk-1.0.la
> libtool: link: warning: undefined symbols not allowed in i686-pc-mingw32
> shared libraries
>
> and no .dll is generated.
>
> If I add "-no-undefined" to linker, no error is shown and the dll is
> generated.
>
> I have several questions:
>
> 1. Why do I have this error?  Is this a bug in clutter gtk?
>
> (2. By the way, I had to do that to fix a compile error:
> sed -i -e
> 's#<clutter/clutter-win32.h>#<clutter/win32/clutter-win32.h>#g'
> $(CLUTTERGTK_DIR)/clutter-gtk/gtk-clutter-actor.c)
>
> 3. Why with -no-undefined the dll *is* generated and nothing is
> reported?  As I read from Internet and ld man page:
> --no-undefined
> -z defs
>      Report unresolved symbol references from regular object files. This
> is done even if the linker is creating a non-symbolic shared library.
> The switch --[no-]allow-shlib-undefined controls the behaviour for
> reporting unresolved references found in shared libraries being linked in.
> So that flag should have reported the unresolved symbols and not fix
> anything!
>
> 4. Why the flag is -no... and not --no...?  I do not see anywhere
> -no..., but only --no...  If I use --no... I still have the link error,
> as if the flag were not taken into account.

Any clue on any of these issues?  Especially the point 1. appears on 
both my Windows machines, which leads me think that it appears always 
with mingw-w64.

Kind regards,
--
Eugen