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Binary Frameworks
in Swift
Peter Steinberger, @steipete
dotSwift Paris 2018 — Peter Steinberger, PSPDFKit — @steipete
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Application Binary
Interface
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A Moving Target
• Nov'15 ABI is a goal on the Swift 3 Roadmap
• May'16 "loftier goals aren’t going to fit"
• Jul'16 "goal of achieving stability in Swift 4"
• Feb'17 "Given the importance..." deferred
• Aug'17 "stable ABI a hard goal"
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When ABI Matters
• Binary compile cache
• Embedded Swift runtime library
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Swift Module Format
• binary equivalent for header files
• contains AST and SIL
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Binary Swift Frameworks
In Production
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Conclusion
• tl;dr: ABI is not that important
• Build SDKs in Objective-C(++)
http://pspdfkit.com/blog/2018/binary-frameworks-swift
More on Twitter: @steipete