[Qt-creator] QtC Runtime issue with 2 Qt version installed

[Henry Skoglund]

On 2018-08-06 05:21, Christian Gagneraud wrote:
> Hi there,
>
> I build Qt and QtC-4.7 myself, the first version of Qt (5.6) is on the
> loader path (using ld.so.conf) and is part of my dev environement, the
> second version of Qt (5.9) is installed beside QtC and is not on the
> loader path (QtC 4.7 requires Qt>=5.9).
>
> I originally had LD_LIBRARY_PATH pointing to Qt-5.6, but then QtC
> refused to start because libqxcb.so (Qt 5.9) was picking up it's
> dependencies from Qt-5.6.
> I use Qt plugin loading debug and ldd, both pointed me to the same direction.
> I then realised that using ld.so.conf worked around the problem for
> Qt's own plugins, but i still have this problem with QtC's
> libexec/clangbackend, the loader resolves it's dependencies to the
> "other" Qt install (5.6, on the loader path).
>
> If i'm not wrong, when i build Qt LD_LIBRARY_PATH is set and point to
> Qt-5.6, but i use Qt-5.9's qmake to configure QtC.
>
> Is there a way to force all these binaries to only rely on a reliable
> rpath, where Qt-5.9 will have proiority?
>
> Here is what I have (Qt-5.6 is installed in /opt/navico-sdk, Qt-5.9
> and QtC are installed in /opt/navico-sdk/ide):
>
> $ patchelf --print-rpath /opt/navico-sdk/ide/bin/qtcreator
> $ORIGIN:$ORIGIN/..:$ORIGIN/../lib/qtcreator:/opt/navico-sdk/ide/lib
> $ patchelf --print-rpath /opt/navico-sdk/ide/libexec/qtcreator/clangbackend
> $ORIGIN/../../lib/qtcreator:$ORIGIN/../../lib/qtcreator/plugins:$ORIGIN:$ORIGIN/..:$ORIGIN/../lib/qtcreator:/opt/navico-sdk/lib:/opt/navico-sdk/ide/lib
>
> QtCreator has no loader path issues, but clangbackend has.
> That's weird.
>
> I would like to find a proper solution before starting to do `patchelf
> --set-rpath`... That would be cleaner IMHO. :)
>
> Any point out?
>
> Chris

Morning,

is there any difference if launch Qt Creator using the qtcreator.sh 
script (it's in the same bin dir as qtcreator)?

Rgrds Henry