hey guys,

i want to deploy my program onto a university server where i don't have root. I am using the Opensource Version of Qt so i cant statically link.

The manual says there are 3 ways to accomplish deployment (http://doc.qt.io/qt-5/linux-deployment.html)

- putting all needed libs int user/lib/
->cant write to there because no root access, so not an option

- passing a prefered path where to look for libs -rpath command
->doing this i manage to get the application to find the qt libraries i shipped with the app. e.g:

libs reside in the sub folder "qtlibs_5.6._64bit"

adding this line to the .pro file
Qt Code: 
  1. QMAKE_LFLAGS += -Wl,-rpath,"'\$$ORIGIN/qtlibs_5.6_64bit'"
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running ldd on my app showes:

Qt Code: 
  1. asdfasdf@asdfasdf:~/Gordon_backup/imex$ ldd imex
  2. 	linux-vdso.so.1 =>  (0x00007ffe24df6000)
  3. 	libQt5PrintSupport.so.5 => /home/gordon/Gordon_backup/imex/./qtlibs_5.6_64bit/libQt5PrintSupport.so.5 (0x00007ff4c608b000)
  4. 	libQt5Widgets.so.5 => /home/gordon/Gordon_backup/imex/./qtlibs_5.6_64bit/libQt5Widgets.so.5 (0x00007ff4c5818000)
  5. 	libQt5Gui.so.5 => /home/gordon/Gordon_backup/imex/./qtlibs_5.6_64bit/libQt5Gui.so.5 (0x00007ff4c5021000)
  6. 	libQt5Core.so.5 => /home/gordon/Gordon_backup/imex/./qtlibs_5.6_64bit/libQt5Core.so.5 (0x00007ff4c4906000)
  7. 	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007ff4c46d0000)
  8. 	libstdc++.so.6 => /home/gordon/Gordon_backup/imex/./qtlibs_5.6_64bit/libstdc++.so.6 (0x00007ff4c434e000)
  9. 	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007ff4c4045000)
  10. 	libgomp.so.1 => /usr/lib/x86_64-linux-gnu/libgomp.so.1 (0x00007ff4c3e22000)
  11. 	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007ff4c3c0c000)
  12. 	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007ff4c3843000)
  13. 	libGL.so.1 => /usr/lib/nvidia-340/libGL.so.1 (0x00007ff4c34f6000)
  14. 	libgobject-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007ff4c32a3000)
  15. 	libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007ff4c30a1000)
  16. 	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007ff4c2e98000)
  17. 	libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007ff4c2b87000)
  18. 	libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007ff4c2975000)
  19. 	libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007ff4c263a000)
  20. 	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007ff4c2420000)
  21. 	libicui18n.so.56 => /home/gordon/Gordon_backup/imex/./qtlibs_5.6_64bit/libicui18n.so.56 (0x00007ff4c1f85000)
  22. 	libicuuc.so.56 => /home/gordon/Gordon_backup/imex/./qtlibs_5.6_64bit/libicuuc.so.56 (0x00007ff4c1bcd000)
  23. 	libicudata.so.56 => /home/gordon/Gordon_backup/imex/./qtlibs_5.6_64bit/libicudata.so.56 (0x00007ff4c01ea000)
  24. 	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007ff4bffe5000)
  25. 	/lib64/ld-linux-x86-64.so.2 (0x000055f39e6f9000)
  26. 	libnvidia-tls.so.340.96 => /usr/lib/nvidia-340/tls/libnvidia-tls.so.340.96 (0x00007ff4bfde2000)
  27. 	libnvidia-glcore.so.340.96 => /usr/lib/nvidia-340/libnvidia-glcore.so.340.96 (0x00007ff4bd1cd000)
  28. 	libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6 (0x00007ff4bcfc5000)
  29. 	libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007ff4bcd55000)
  30. 	libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007ff4bcb32000)
  31. 	libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007ff4bc92e000)
  32. 	libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007ff4bc727000)
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so i think passing the libs worked, i think ?!

but if i run the program i get this:

Qt Code: 
  1. asdfasdf@hasdfasdfas:~/Gordon_backup/imex$ ./imex
  2. This application failed to start because it could not find or load the Qt platform plugin "xcb"
  3. in "".
  4.  
  5. Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, xcb.
  6.  
  7. Reinstalling the application may fix this problem.
  8. Aborted (core dumped)
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as i understand i need to copy the folder plugins/platforms and its content to my application folder for this to work (http://doc.qt.io/qt-5/linux-deployment.html)

this does not seem to work for even if i run this on the development platform where withought passing the -rpath everything works.

i also tried prerunning a bash script like also suggested in the documentation:
./imex.sh
Qt Code: 
  1. #!/bin/sh
  2. appname=`basename $0 | sed s,\.sh$,,`
  3.  
  4. dirname=`dirname $0`
  5. tmp="${dirname#?}"
  6.  
  7. if [ "${dirname%$tmp}" != "/" ]; then
  8. dirname=$PWD/$dirname
  9. fi
  10. LD_LIBRARY_PATH=$dirname
  11. export LD_LIBRARY_PATH
  12. export QT_QPA_PLATFORM_PLUGIN_PATH=$PWD/plugins/platforms
  13. $dirname/$appname "$@"
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i also specifically added the QT_QPA_PLATFORM_PLUGIN_PATH since to me it looked like it was not found. this gives me a slightly different output.

Qt Code: 
  1. asdfsdf@asdfsfd:~/Gordon_backup/imex$ ./imex.sh 
  2. This application failed to start because it could not find or load the Qt platform plugin "xcb"
  3. in "/home/gordon/Gordon_backup/imex/plugins/platforms".
  4.  
  5. Available platform plugins are: eglfs (from /home/gordon/Gordon_backup/imex/plugins/platforms), linuxfb (from /home/gordon/Gordon_backup/imex/plugins/platforms), minimal (from /home/gordon/Gordon_backup/imex/plugins/platforms), minimalegl (from /home/gordon/Gordon_backup/imex/plugins/platforms), offscreen (from /home/gordon/Gordon_backup/imex/plugins/platforms), xcb (from /home/gordon/Gordon_backup/imex/plugins/platforms), eglfs, linuxfb, minimal, minimalegl, offscreen, xcb.
  6.  
  7. Reinstalling the application may fix this problem.
  8. Aborted (core dumped)
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to me this looks like if found the platforms folder and its content but still was not happy with that...

if i run ldd on imex/plugins/platforms/

Qt Code: 
  1. asdfasdf@asdfasdfas:~/Gordon_backup/imex/plugins/platforms$ ldd libqxcb.so
  2. ./libqxcb.so: /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5: version `Qt_5_PRIVATE_API' not found (required by ./libqxcb.so)
  3. ./libqxcb.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5.7' not found (required by ./libqxcb.so)
  4. ./libqxcb.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5' not found (required by ./libqxcb.so)
  5. ./libqxcb.so: /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5: version `Qt_5' not found (required by ./libqxcb.so)
  6. 	linux-vdso.so.1 =>  (0x00007ffca21a3000)
  7. 	libQt5XcbQpa.so.5 => /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 (0x00007fc6b8faf000)
  8. 	libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007fc6b8dad000)
  9. 	libXi.so.6 => /usr/lib/x86_64-linux-gnu/libXi.so.6 (0x00007fc6b8b9c000)
  10. 	libSM.so.6 => /usr/lib/x86_64-linux-gnu/libSM.so.6 (0x00007fc6b8994000)
  11. 	libICE.so.6 => /usr/lib/x86_64-linux-gnu/libICE.so.6 (0x00007fc6b877a000)
  12. 	libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007fc6b852d000)
  13. //..cropped for readablity
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to me it looks like the platform libs are trying to access the Qt libraries again? is there a way to resolve this? Did i not read the Documentation properly? What did i miss? Help would be very appriciated! Thx in advance. Sorry for so much writing