32bit MacOS was never used on x86 as far as I know. And even PPC 32bit was a very small number of machines a very long time ago. Not sure about 32bit iPads and iPhones.
But, I’ve never seen a project using rust on iOS. Does anyone have an example of this?
I guess it’s not open source. :(
The workflow shouldn’t be anything too intense, you build a library, compile to the right arch, and treat it like any C library.
In particular, the quicktime runtime / codecs (until quicktime x) was only x86, and various VFX apps on OS X had to write RPC code to communicate with it as a 32-bit process from 64-bit land.
TLDR: No recent Apple OSes support running 32-bit at all.
I only mention it because the timing was a surprise to everyone in the industry.
macOS Mojave 10.14 (released 2018) supports running 32-bit apps.
iOS 10 (released 2016) supports running 32 bit apps.
I would agree that iOS 10 is not recent, in the context of the iOS timeline. I would disagree that macOS Mojave is not recent, given that Apple still has numerous show-stopper bugs in the upgrade process to Catalina.