Swift Build System Support

There is experimental support for using Swift Build as the build system for SwiftPM. You can try the build system with the --build-system option like this:

swift build --build-system=swiftbuild

What works so far:

• Builds on macOS
• Simple packages

Work is continuing in these areas:

• Builds on Linux and Windows
• Conditional target dependencies (i.e. dependencies that are conditional on ".when()" specific platforms)
• Plugin support
• Friendly Error and Warning Descriptions and Fixups
• Cross compiling Swift SDK's (e.g. Static Linux SDK, and Wasm with WASI)
• Improvements to test coverage
• Task execution reporting

Problem Reporting

When raising an issue with problems regarding the Swift Build System, please indicate that you are using this build system instead of the built-in native (or xcode) build systems. Including a minimal package that exhibits the bad behaviour will help with problem diagnosis and fixing.