Prompt to install Rosetta 2 message

There isn’t a specific API to show this message. Rather, it automatically kicks in when you try to launch an Intel app on your Apple silicon machine.

I suspect that there’s something about the way that your app is packaged that’s triggering this. Let’s start with something basic: When you look at the main executable of your app, is that an Intel binary? Or a script?

To check this:

1. First find the name of your main executable.

2. Then run file against that name in Contents/MacOS.

For example, for the Pacifist app I see this:

% /usr/libexec/PlistBuddy -c "print :CFBundleExecutable" Pacifist.app/Contents/Info.plist 
Pacifist

and then this:

% file Pacifist.app/Contents/MacOS/Pacifist 
Pacifist.app/Contents/MacOS/Pacifist: Mach-O universal binary with 2 architectures: [x86_64:Mach-O 64-bit executable x86_64] [arm64]
…

confirming that it’s a universal binary.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Thanks for the quick reply, My executable is binary I get "Mach-O 64-bit executable x86_64" when I run file command.

Thanks

My executable is binary

OK.

Earlier you wrote:

When I try to run the executable on Mac

Just to confirm, by “run the executable” you meant “double click it in the Finder”, right?

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Actually not, this is console application, so we run it from the terminal. {bundle_path}/Contents/MacOS/my_executable

Ah, OK, then that won’t work. The Rosetta check is implemented deep in the system, but not that deep. It kicks in for all the common user-level scenarios, including launching the app from the Finder, but code you run from a shell in Terminal goes straight to the kernel (via fork/exec).

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"