[BLOCKER] rpath is not (always?) set for plugins

[probonopd]

As pointed out here, for LibrePCB compiled with the distro-provided Ubuntu trusty Qt 5.2 you need to run

patchelf --set-rpath '$ORIGIN/../../lib:$ORIGIN' ./opt/plugins/platforms/libqxcb.so
patchelf --set-rpath '$ORIGIN/../../lib:$ORIGIN' ./opt/plugins/bearer/libqnmbearer.so 
patchelf --set-rpath '$ORIGIN/../../lib:$ORIGIN' ./opt/plugins/bearer/libqconnmanbearer.so 
patchelf --set-rpath '$ORIGIN/../../lib:$ORIGIN' ./opt/plugins/sqldrivers/libqsqlite.so

Why is linuxdeployqt not doing this?

[probonopd]

I can confirm this with https://transfer.sh/12Wbzk/cuterest-git.95de920-x86-64.appimage

This does not run on Antergos Linux rolling 2014.07-ISO.

find . -executable -type f -exec ldd {} \; | grep " => /usr" | grep libQt && echo "WARNING! Still trying to load Qt from the system! This will not work or crash. Need to change rpaths"

# Fix it
find usr/plugins/ -type f -exec patchelf --set-rpath '$ORIGIN/../../lib'  {} \;

[probonopd]

Whenever these two numbers don't match it indicates that we haven't properly deployed (set rpath and copied dependencies) all .so files, which is a linuxdeployqt problem.

me@host:~$ find usr/ -name '*.so*' -exec grep '$ORIGIN' {} \; | wc -l
58
me@host:~$ find usr/ -name '*.so*' | wc -l
69

[probonopd]

May be fixed in linuxdeployqt trunk with b71bd4d and bace185, more testing needed.

[probonopd]

me@host:~$ /home/me/Downloads/CuteRest-git.b2271de-x86_64.AppImage --appimage-extract
me@host:~$ cd squashfs-root/
me@host:~/squashfs-root$ find usr/ -name '*.so*' -exec grep '$ORIGIN' {} \; | wc -l
77
me@host:~/squashfs-root$ find usr/ -name '*.so*' | wc -l
77

So, seems to be working now thanks to b71bd4d and bace185.