Openbci_gui: java.lang.UnsatisfiedLinkError: liblog.so

[jacobgmartin]

Problem

I copied all the libraries from OpenBCI_GUI (latest development version) over to the ~/sketchbook/libraries directory for Processing 4 alpha1.

Yet, I seem to have two missing libraries "liblog.so" and "processing.awt.PSurfaceAWT"

I can't seem to find any information about this error or this library on the internet.

I'm on Gentoo. Does anyone have any advice? Should these libraries be included in the libraries sketchbook subfolder?

Expected

No libraries missing.

Operating System and Version

Linux 5.4.38-gentoo-x86_64 #2 SMP Fri May 15 04:51:57 EDT 2020 x86_64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz GenuineIntel GNU/Linux

GUI Version

5.0.0-beta2

Running standalone app

From processing.

Type of OpenBCI Board

Cyton

Are you using a WiFi Shield?

No

Console Log

No library found for processing.awt.PSurfaceAWT
Console Log Started at Local Time: 2020-07-28_18-09-19
Screen Resolution: 1920 X 1080
Welcome to the Processing-based OpenBCI GUI!
For more information, please visit: https://openbci.github.io/Documentation/docs/06Software/01-OpenBCISoftware/GUIDocs
TopNav: Internet Connection Successful
Local Version: 500, Latest Version: 500
GUI is up to date!
OpenBCI_GUI::Setup: Sample Data exists in Documents folder.
ControlP5 2.2.6 infos, comments, questions at http://www.sojamo.de/libraries/controlP5
The file "/home/martin/Documents/OpenBCI_GUI/Settings/UserPlaybackHistory.json" is missing or inaccessible, make sure the URL is valid or that the file has been added to your sketch and is readable.
OpenBCI_GUI::Control Panel: Playback history file not found or other error.
null
OpenBCI_GUI::Setup: Setup is complete!
sourceList: click!
Channel count set to 8
ControlPanel: Found Cyton Dongle on COM port: /dev/ttyUSB0
ControlPanel: Attempting to Auto-Connect to Cyton
ControlPanel: Found Cyton Dongle on COM port: /dev/ttyUSB0
Cyton AutoConnect Button: get_channel
Radios_Config: connect_to_portName: Attempting to open serial port: /dev/ttyUSB0
Radios_Config: connect_to_portName: Port is open!
Radios_Config: Failure: Host on Channel number: 20
serialList: click!
ControlPanel: Found Cyton Dongle on COM port: /dev/ttyUSB0
serialList: click!
initButtonPressed: Calling initSystem() after next draw()
OpenBCI_GUI: Start session. Calling initSystem().

=================================================

|| INITIALIZING SYSTEM ||

java.lang.UnsatisfiedLinkError: liblog.so: cannot open shared object file: No such file or directory
at processing.opengl.PSurfaceJOGL$2.run(PSurfaceJOGL.java:428)
at java.base/java.lang.Thread.run(Thread.java:834)
UnsatisfiedLinkError: liblog.so: cannot open shared object file: No such file or directory
A library relies on native code that's not available.
Or only works properly when the sketch is run as a 32-bit application.
UnsatisfiedLinkError: liblog.so: cannot open shared object file: No such file or directory

[retiutut]

• No library found for processing.awt.PSurfaceAWT is ok. We are aware of this. It's used for popup notification window, yet it still works.

• java.lang.UnsatisfiedLinkError: liblog.so: cannot open shared object file: No such file or directory is a new issue I have not seen. Maybe it's related to your particular distribution of Linux.

I copied all the libraries from OpenBCI_GUI (latest development version) over to the ~/sketchbook/libraries directory for Processing 4 alpha1.

We are going to release GUI v5 using Processing 3, for now, since I'm waiting for a release that includes a fix for https://github.com/OpenBCI/OpenBCI_GUI/issues/674.

Can you try a v5.0.0-beta standalone release and/or downgrade to Processing 3? Maybe this will help.

[jacobgmartin]

Thanks for your help!

• I tried v5.0.0-beta standalone and there was no problem.
• I'd still like to get Processing going so I can help with coding on the development version.
• I downgraded Processing to 3 and still had the problem.
• I found the arduino-ndk package on gentoo which provides liblog.so. I copied this file to the processing directory. I then ran
  export LD_LIBRARY_PATH="."
  ./processing

The new error was:

java.lang.UnsatisfiedLinkError: /usr/lib64/libm.so: invalid ELF header
at processing.opengl.PSurfaceJOGL$2.run(PSurfaceJOGL.java:408)
at java.lang.Thread.run(Thread.java:748)
UnsatisfiedLinkError: /usr/lib64/libm.so: invalid ELF header
UnsatisfiedLinkError: /usr/lib64/libm.so: invalid ELF header
A library relies on native code that's not available.
Or only works properly when the sketch is run as a 32-bit application.

I tried 32-bit and 64-bit.

Questions:

• Does anyone know exactly what version of liblog I'm supposed to be using? I used android-28. I'm not even sure if this is the right package.

Thanks again!

[retiutut]

@jacobgmartin It looks like @daniellasry and @Andrey1994 have just merged some code that may resolve this issue for you.

@daniellasry Does @jacobgmartin just need to try the upstream/development branch to test?

[daniellasry]

Hey @jacobgmartin , Andrey has pushed a fix to the development branch. Let us know if it works for you. Thanks

[Andrey1994]

but keep in mind that it's not in GUI's code. Its in a library, so you need to copypaste new libs to Processing folder

[retiutut]

@jacobgmartin https://github.com/OpenBCI/OpenBCI_GUI/releases/tag/v5.0.0

[jacobgmartin]

Works for me now in processing 3.5.3.

Thanks!