zsh:1: command not found: julia [Mac]

[70Gage70]

I put jcall.m into a folder, opened it, and ran

jlcall('sort', {rand(2,5)}, struct('dims', int64(2)))

Immediately, it returns zsh:1: command not found: julia. This is confusing since which julia in the terminal returns /opt/homebrew/bin/julia. This appears to be related to a general issue with MATLAB with respect to calling system commands.

What worked for me was replacing the function try_find_julia_runtime() with the following

function runtime = try_find_julia_runtime()
    setenv('PATH','/opt/homebrew/bin')
    runtime = 'julia';
end

Obviously that's not a very generic solution but I'm not really a MATLAB expert.

[jondeuce]

Unfortunately I don't have access to a Mac to test this out, but yes that seems rather inconvenient.

From the referenced link, it seems like you probably should be able to run the setenv command in the console, so you shouldn't have to modify try_find_julia_runtime(). Or perhaps more conveniently, add the following line to your startup.m file:

• setenv('PATH', [getenv('PATH') ':/opt/homebrew/bin']);

Note that typically you want to append to the current PATH environment variable, not replace it entirely.

You also have the option to pass the Julia runtime path to jlcall explicitly:

• jlcall('sort', {rand(2,5)}, struct('dims', int64(2)), 'runtime', '/opt/homebrew/bin/julia')

This will override try_find_julia_runtime(). I should add an example highlighting this flag in the README, since this flag was also useful in a previous issue.

[70Gage70]

Thanks for the detailed response, modifying startup.m seems like the best solution.