Support for OSX on ARM (M1)

[Horcrux7]

It will be nice if the next release of OpenJpeg can also support OSX on the ARM (M1) platform. I think the future Macs will run on ARM chips instead on Intel chips.

[rouault]

Why wouldn't it support them ? The library is written in portable C

[Horcrux7]

Why wouldn't it support them ? The library is written in portable C

In the latest release I see only binaries for x86 https://github.com/uclouvain/openjpeg/releases/tag/v2.3.1

[rouault]

In the latest release I see only binaries for x86

There are tons of potential platforms and CPU architectures. Releases include only a subset of what can work. Up to the users to build for their platform of choice.
What could potentially be done in the source code is ARM specific optimizations for the optimized code paths that exist currently for x86. Of course it will require someone to contribute this or fund someone to do so.

[gamma]

Since Intel platform is going to be obsolete for macOS, it should be considered to have native Apple Silicon support right here as a release.

[Eharve14]

Just to add to this, I compiled and ran this as native an M1 machine when I contributed to the project. There are known compiler issues on the M1 platform that have to be resolved before you compile: https://developer.apple.com/forums/thread/666700

[Dennis-Johnson]

Was able to compile from source using the suggested CMake method on an M1 Air.

• MacOS version: Ventura 13.1
• uname -v : Darwin Kernel Version 22.2.0: Fri Nov 11 02:04:44 PST 2022; root:xnu-8792.61.2~4/RELEASE_ARM64_T8103
• xcode-select --version: xcode-select version 2396