Model Composer 2020.2 and MATLAB R2020b problem on Ubuntu

[oguzhan.cik]

I'm using Vitis 2020.2 installation on Ubuntu 20.04 with Matlab 2020b. When I try to open Model Composer using xmc_sysgen command from terminal, I get the following errors:

/usr/local/MATLAB/R2020b/bin/glnxa64/cef_helper: symbol lookup error: /lib/x86_64-linux-gnu/libgnutls.so.30: undefined symbol: __gmpz_limbs_write
/usr/local/MATLAB/R2020b/bin/glnxa64/cef_helper: symbol lookup error: /lib/x86_64-linux-gnu/libgnutls.so.30: undefined symbol: __gmpz_limbs_write

After getting them Matlab is opened but Simulink window cannot be opened related to this errors. When I try to open Matlab2020b without Xilinx extensions, I don't get this error and simulink is opened succesfully. 

I need a solution for this issue caused by Xilinx extensions.

[miker · Accepted solution]

@oguzhan.cik Please reference the Vivado Design Suite Release Notes, Installation, and Licensing User Guide (UG973; v2020.2) in Table 2: Compatible Third-Party Tools.  MathWorks MATLAB and Simulink versions supported by Vivado/Vitis 2020.2 are R2019a, R2019b, and R2020a.

[mohammadhgh]

@miker Is there inconsistency between UG973  and UG1483, as in UG1483 it indicates that MATLAB R2020b is also supported?

[miker]

@mohammadhgh 

Good catch.  There is supposed to be consistency.  I will report the inconsistency and have them correct the documentation.

[viswanad]

UG973 is already updated to be in sync with the UG1483. It should be out soon with updated MATLAB version support.

[mohammadhgh]

@miker I tried both MATLAB R2020a and R2020b with Ubuntu 20.04 and still get the same error. When I open a Simulink window, the following error is shown in MATLAB command windows and when the Simulink window is open the header is empty.

[cgrant]

@miker, @viswanad, I am also experiencing what @mohammadhgh is seeing. Matlab 2020b seems to be fine opening windows when opened using the matlab executable, but when I open it using the "sysgen" executable (Vivado 2020.2), I get this error in Matlab:

>> cd(matlabroot)
>> ! bin/glnxa64/MATLABWindow
bin/glnxa64/MATLABWindow: symbol lookup error: /lib/x86_64-linux-gnu/libgnutls.so.30: undefined symbol: __gmpz_limbs_write

Why is GMP missing? Do I need to install GMP separately? 

[kbandura]

I have the same trouble.  Things 'run', but I cannot open a Xilinx block in simulink.

[Martinal_Vites]

Hi, I have that problem and was solved just cleanen de cache of google chrome in /home/$USER/.cache/.google-chrome/

But now I have the same problem as mohammadhgh @mohammadhgh , @cgrant and @kbandura ,

>> cd (matlabroot)
>> ! bin/glnxa64/MATLABWindow
bin/glnxa64/MATLABWindow: symbol lookup error: /lib/x86_64-linux-gnu/libgnutls.so.30: undefined symbol: __gmpz_limbs_write

I run sysgen with Vivado 2019.2 and MATLAB 2019.b on Ubuntu 20.04.01

Linux graslilie 5.8.0-49-generic #55~20.04.1-Ubuntu SMP Fri Mar 26 01:01:07 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

[canisio]

Hello @miker 

This solution is not working. I've tried with Matlab 2020a and 2020b and I'm getting the exact same error described by @mohammadhgh  and @oguzhan.cik 

I'm using Ubuntu 20.04 LTS, Matlab 2020a and Vivado 2020.2. What I'm missing?

[kbandura]

What actually worked for me was to install the KDE desktop environment.  I believe I followed this:  https://itsfoss.com/install-kde-on-ubuntu/

Everything then worked for me on the KDE desktop, or standard Ubuntu Desktop.

[canisio]

Just tried KDE and the errors are exactly the same. It did not work. Thanks anyways.

I'll wait to see what's Xilinx position...

[oguzhan.cik]

The problem still exists in 2021.1 Version with Matlab 2020b on Ubuntu 20.04. Are there any possible solutions ?

[canisio]

My workaround was to install Vivado 2020.1, Matlab 2020a, Ubuntu 18.04 with KDE (which I hate btw). This is the only combination that worked for me.

Looks like people from Xilinx do not care to match things up when they upgrade Vivado.