*-apple-ios
Apple iOS / iPadOS targets.
Tier: 2 (without Host Tools)
aarch64-apple-ios: Apple iOS on ARM64.aarch64-apple-ios-sim: Apple iOS Simulator on ARM64.x86_64-apple-ios: Apple iOS Simulator on 64-bit x86.
Tier: 3
armv7s-apple-ios: Apple iOS on Armv7-A.i386-apple-ios: Apple iOS Simulator on 32-bit x86.
Target maintainers
Requirements
These targets are cross-compiled, and require the corresponding iOS SDK
(iPhoneOS.sdk or iPhoneSimulator.sdk), as provided by Xcode. To build the
ARM64 targets, Xcode 12 or higher is required.
The path to the SDK can be passed to rustc using the common SDKROOT
environment variable.
OS version
The minimum supported version is iOS 10.0.
This can be raised per-binary by changing the deployment target. rustc
respects the common environment variables used by Xcode to do so, in this
case IPHONEOS_DEPLOYMENT_TARGET.
Building the target
The tier 2 targets are distributed through rustup, and can be installed
using one of:
$ rustup target add aarch64-apple-ios
$ rustup target add aarch64-apple-ios-sim
$ rustup target add x86_64-apple-ios
The tier 3 targets can be built by enabling them for a rustc build in
config.toml, by adding, for example:
[build]
target = ["armv7s-apple-ios", "i386-apple-ios"]
Using the unstable -Zbuild-std with a nightly Cargo may also work.
Building Rust programs
Rust programs can be built for these targets by specifying --target, if
rustc has been built with support for them. For example:
$ rustc --target aarch64-apple-ios your-code.rs
Testing
There is no support for running the Rust or standard library testsuite at the moment. Testing has mostly been done manually with builds of static libraries embedded into applications called from Xcode or a simulator.
It hopefully will be possible to improve this in the future.