[Ctk-developers] GCC visibility flags?

[Luis Ibanez]

We have seen the same warnings on Mac
(and not when building on Ubuntu).

I looks like it is a Mac issue...,

but It is annoying enough
that it will be nice to fix it.       :-)


    Luis


-----------------------------------------------------
On Thu, Jul 8, 2010 at 10:30 PM, Daniel Blezek <daniel.blezek at gmail.com>wrote:

> Sascha,
>
>  I just built on linux and didn't have this problem with linking.  Perhaps
> the flag isn't doing exactly what we expect?  Or is the Mac just more picky?
>  Can you easily tell?
>
> Cheers,
> -dan
>
>
>
> On Jul 7, 2010, at 12:52 AM, Sascha Zelzer wrote:
>
> > Hi Dan,
> >
> > this is the closed issue for the change:
> >
> > http://github.com/pieper/CTK/issues/closed#issue/10
> >
> > I have not seen any linker wanings on my Linux machine yet, did you
> introduce new code (and what system are you running)?
> >
> > The flags cannot easily be applied to external libraries, since symbols
> must be prefixed with the appropriate import/export specifiers in the .h
> files.
> >
> > Best,
> > Sascha
> >
> > On 07/07/2010 04:12 AM, Daniel Blezek wrote:
> >> Hi all,
> >>
> >>   Can someone explain this code from the top level CTK CMakeLists.txt
> file?
> >>
> >>
> #-----------------------------------------------------------------------------
> >> # Set symbol visibility Flags
> >> #
> >> IF("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
> >>   SET(VISIBILITY_CXX_FLAGS "-fvisibility=hidden
> -fvisibility-inlines-hidden")
> >> ENDIF()
> >>
> >>
> >> This causes all sorts of linker warnings because Log4Qt doesn't include
> the flag and CTK does.
> >>
> >> Is this strictly necessary?  If so, can it be applied to the Externals
> as well?
> >>
> >> Thanks,
> >> -dan
> >>
> >> --
> >> Daniel Blezek
> >> daniel.blezek at gmail.com
> >>
> >>
> >>
> >> _______________________________________________
> >> Ctk-developers mailing list
> >> Ctk-developers at commontk.org
> >> http://public.kitware.com/cgi-bin/mailman/listinfo/ctk-developers
> >>
> >
> > _______________________________________________
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>
> --
> Daniel Blezek
> daniel.blezek at gmail.com
>
>
>
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>
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