swift-sdk-darwin

SDKs for cross-compiling Darwin code on Linux.

Building

Prerequisites:

• macOS
  • Xcode
• Linux
  • rsync
  • unxip

Steps:

1. Download and install/extract Xcode 15.0 or higher
   • Use unxip to extract Xcode if you're on Linux.
2. Run ./build.sh <linux host> [developer dir].
   • linux host: You can pass any Linux host for which a darwin-tools-linux release exists. e.g. ubuntu22.04-aarch64.
   • developer dir: this should be the path to Xcode.app/Contents/Developer. On macOS, you can omit this argument to let the script infer it.

Find the output at output/darwin.artifactbundle.

Installing

Prerequisites:

• Swift 5.9 toolchain (https://swift.org/download)
• darwin.artifactbundle built for your host OS (see Building)

swift experimental-sdk install output/darwin.artifactbundle

Usage

swift build --experimental-swift-sdk arm64-apple-ios

TODO

• [ ] Make it easy to use CI (nb: we avoid distributing pre-packaged toolchains for legal reasons)