Hi,
I have a gentoo-prefix like local set-up under Linux with an installation under
/opt/local that holds among others Qt5 (5.7.1 currently):
/opt/local/libexec/qt5 : libraries & binaries
/opt/local/share/qt5 : plugins and other shared stuff not linked or called
directly
I've observed that I can build Qt 5.8.0RC with the same installation layout but
install ("destroot") it elsewhere and then test existing applications from
/opt/local with
env LD_LIBRARY_PATH=/path/to/destroot/opt/local/libexec/qt5/lib
so that they run using Qt 5.8 but still use compatible things from
/opt/local/share/qt5, like the QtCurve application style and apparently even
the KF5 platform theme plugin.
To make testing a bit easier it would be nice if I could make a test install of
the form
/opt/local/libexec/qt5RC
/opt/local/share/qt5RC
I expect that this will make it difficult if not impossible to use compatible
things from /opt/local/share/qt5, like styles and the platform theme plugin.
Is that correct or will that still be possible with minimal effort? Having to
set an additional env. variable wouldn't necessarily be an issue as it would
allow excluding *in*compatible things that would otherwise cause crashing or
aborting.
I'd simply try but building and rebuilding Qt takes a bit too long for that.
Thanks,
René
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