Re: Static compilation with Qt

[Erik L. <eri...@gm...>]

Hi, I did solve the second problem, I believe. In
src/qtterminal/gnuplot_qt.cpp, immediately prior to the line


QtGnuplotApplication application(argc, argv);

one needs the line:

Q_IMPORT_PLUGIN(QCocoaIntegrationPlugin);



As far as I can tell, other platforms would need a similar line if one
wishes to build a static binary. For Qt6, the list is here:
https://doc.qt.io/qt-6/qpa.html

Erik


On Wed, Mar 19, 2025 at 3:28 PM Erik Luijten <eri...@gm...> wrote:

> Dear all,
>
> I am trying to create gnuplot executables for macOS in which the Qt
> libraries are statically linked. It is easy to create static versions of
> Qt, but I run into two problems:
>
>
> 1. Compilation of gnuplot on macOS relies on pkg-config, but to the best
> of my knowledge, pkg-config is not supported in Qt6 (if I am mistaken, I
> would be grateful for pointers).
>
>
> 2. Qt5 has support for pkg-config. A regular (dynamic) binary of gnuplot
> works well with Qt. However, a statically compiled version of gnuplot
> starts properly, but as soon as I issue the first plot command there is a
> warning:
>
> qt.qpa.plugin: Could not find the Qt platform plugin "cocoa" in ""
>
>
>
> If I restart gnuplot after setting "export QT_DEBUG_PLUGINS=1", I get:
>
> FactoryLoader::QFactoryLoader() ignoring
> "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3" since
> plugins are disabled in static builds
>
>
> As far as I can tell, the qtterminal source code should have a
> Q_IMPORT_PLUGIN() command to work properly with static compilation, but I
> do not know enough about Qt to be sure.
>
>
> Any help would be appreciated!
>
> Erik
>