Re: Qt question: GNU_PROPERTY_1_NEEDED_INDIRECT_EXTERN_ACCESS

Ionen Wolkens <[email protected]> Sun, 19 Apr 2026 12:37:38 -0400
Newsgroups	gmane.linux.gentoo.devel
Message-ID	<aeUE0oKvQmC-zTVy@eversor>
On Sun, Apr 19, 2026 at 05:13:26PM +0100, Sam James wrote:
> Andrey Grozin <[email protected]> writes:
> 
> > Hello *,
> >
> > I'm trying to resurrect master-pdf-editor (this is a proprietary
> > binary program, non-commercial use is allowed for free). The newest
> > version 5.9.98 uses Qt6, not Qt5 like older versions. I've prepared an
> > ebuild for this version (it RDEPENDS on very many libraries). But I
> > get
> >
> > grozin@localhost ~/H4/corr4/yaf $ mpe5 lb0.pdf
> > 13:09:47 19.04.26  Main:  Open one window: 1
> > warning: direct reference to protected function
> > `_ZN7QWidget11changeEventEP6QEvent' in `/usr/lib64/libQt6Widgets.so.6'
> > may break pointer equality
> > /opt/master-pdf-editor-5/masterpdfeditor5:
> > _ZN7QWidget11changeEventEP6QEvent: /usr/lib64/libQt6Widgets.so.6:
> > error due to GNU_PROPERTY_1_NEEDED_INDIRECT_EXTERN_ACCESS
> >
> > Googling GNU_PROPERTY_1_NEEDED_INDIRECT_EXTERN_ACCESS I see that many
> > users have this problem, mostly on arch, e.g.
> >
> > https://github.com/slint-ui/slint/issues/7174
> > https://github.com/PrismLauncher/PrismLauncher/issues/991
> > https://qt-project.atlassian.net/browse/QTBUG-115261
> > https://github.com/juzzlin/Heimer/issues/255
> >
> > It seems qtbase in Gentoo (and arch) is compiled in a way that makes
> > it incompatible with binary programs compiled for other distros.
> 
> Qt upstream recommends we use this and I think they plan to make it the
> default for Qt 7. It improves load time.
> 
> > Is there any way to overcome this problem? After a long struggle for a
> > Qt6 version of master-pdf-editor we at last have it, but it does not
> > run...
> >
> 
> I don't have any ideas for a workaround other than using a Flatpak.

Actually kind of surprised this is the first time I hear of this
considering we made the switch without rebuilding everything,
meaning packages built against regular Qt started using it without
a rebuild and didn't complain? Or am I missing something?

Think there are other prebuilts using it too, like google-chrome's
qt6 plugin (is it broken?).

Maybe it's something specifically with how this was built like
maybe it used a old binutils or something similar, not that we
can do much about it either way.

That aside I (personally) wouldn't think much of shipping bundled
libraries if it's unusable with system's anyway.
-- 
ionen
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