Static compilation with Qt

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