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Mach-O

Should apps and command tools be notarized?

Yes, you can notarize command tools. Doing so ensures independent approval that the code isn’t malicious, and disapproval, letting macOS block code with revoked certificates or notarization.

February 17, 2023 Macs, Technology

Are command tools getting out of their depth?

They now get signed, an Info.plist is embedded, they’re notarized by Apple, use the hardened runtime, maybe the App Sandbox, and request entitlements. So how do you check their version?

August 29, 2022 Macs, Technology

Explainer: version and build numbers

Where to see them, how they’re constructed, Apple’s rules, how they are created, and how even Apple doesn’t use them according to its own rules.

June 19, 2021 Macs, Technology

Which version is that command tool?

Discovering what has been updated in a macOS update isn’t easy. In the case of command tools, it’s just impossible.

August 15, 2020 Macs, Technology

Last Week on My Mac: Coming NeXT on Apple Silicon

Look forward to Universal Apps, which will show how well Apple Silicon Macs perform. There’s a lot of history buried in them too.

August 2, 2020 Macs, Technology

Apps on the ultimate diet: beyond stripping Universals

Can you strip all Intel executables from a Universal App to make it even smaller? What benefits might there be in building an app for Big Sur only?

July 31, 2020 Macs, Technology

Instant weight loss: how to strip Universal Apps

Will stripping executable code for an unwanted platform stop an app from working? What savings are to be gained?

July 30, 2020 Macs, Technology

Last Week on My Mac: How Apple told us about Apple Silicon 2 years ago

Apple gave us a big clue in the command tool lipo, which underwent complete overhaul in Mojave – a clear signpost of where it is heading.

July 26, 2020 Macs, Technology

How to tell Intel code from Universal

How can you tell whether an app on your Mac is a Universal App, or only support Intel processors?

July 20, 2020 Macs, Technology

What happens when you run an app in Catalina?

T T Read More

From launch, through security checks, TCC and privacy, RunningBoard, to memory management and the Main Event Loop. A comprehensive summary.

November 29, 2019 Macs, Technology

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