An error occurs when generating a custom message using rosgenmsg.

An error occurs when generating a custom message using rosgenmsg.

The error is as follows.

>> rosgenmsg('/root/mavros_msgs/')
Identifying message files in folder '/root/mavros_msgs'..Done.
Validating message files in folder '/root/mavros_msgs'..Done.
[0/1] Generating MATLAB interfaces for custom message packages... 0%Error using ros.internal.utilities.getCMakeBinaryPath (line 24)
Could not find CMake in your system. Please install CMake version 3.15.5 or higher and rerun the command.

Error in ros.internal.CatkinBuilder.getCMakePath (line 82)
            [aPath, aVersion] = ros.internal.utilities.getCMakeBinaryPath(ros.internal.CatkinBuilder.CMAKEMINVERSION);

Error in ros.internal.ROSProjectBuilder (line 391)
            h.CMakePath = h.getCMakePath();

Error in ros.internal.CatkinBuilder (line 24)
            [e-mail](varargin{:});

Error in rosgenmsg (line 223)
            builder = ros.internal.CatkinBuilder(genDir, pkgInfos{iPkg});
            
            

However, I have already installed cmake 3.20.5.

However, matlab does not seem to recognize the cmake installed on the desktop.

>> !which cmake
/usr/local/bin/cmake
>> !cmake version
cmake: /usr/local/MATLAB/R2020b/sys/os/glnxa64/libstdc++.so.6: version `GLIBCXX_3.4.26' not found (required by cmake)

The above error occurs when checking the cmake version in the matlab command window.

Can you help me?

I run matlab in docker, ubuntu 20.04, cmake 3.20.5, python2.7 environment.

and matlab version is 2020b