kc3-lang/libjpeg-turbo

2022-11-30T18:16:14

BUILDING.md: Add Arm64 iOS sim build instructions Unfortunately, iOS builds cannot be used with the iOS simulator on Macs with Apple silicon CPUs. Even more unfortunately, universal binaries can only have one slice for each CPU architecture, so it would not be possible to add a dedicated Arm64 iOS simulator slice to the existing libjpeg-turbo iOS binaries. (It would be necessary to release a separate package solely for the iOS simulator.) Because the Arm Neon SIMD extensions for libjpeg-turbo now use compiler intrinsics when building with Xcode, it is easy to build libjpeg-turbo from source when targeting Arm64-based Apple platforms. Thus, for the moment, I have chosen to document how to avoid the pothole rather than to fill it in.