Optimize build time in iOS app - gpeegpee/learn-swift GitHub Wiki

Tips to optimize build time

• (분석)Xcode 상단에 빌드시간 나오게 하기

defaults write com.apple.dt.Xcode ShowBuildOperationDuration -bool YES

• (분석)빌드 오래 걸리는 소스 정보 나오게 하기: Other Swift Flags에 아래 추가

-Xfrontend -warn-long-function-bodies=100
-Xfrontend -warn-long-expression-type-checking=100
-Xfrontend -debug-time-function-bodies

• (분석) Build with timing summary 정보 나오게 하기

  • Product-> Perform Action -> Build with timing summary

• Project 빌스 설정을 new build system으로 선택

• Debug 빌드시 Build Active Architecture Only를 YES로 설정

• Compilation Mode를 Incremental로 Optimisation Level을 No optimization으로 설정

• dSYM Debug버전에서는 생성하지 않도록 하기

  • Debug Information Format에서 DWARF로 설정해서 dSYM파일 생성되지 않도록 설정

• 병렬 빌드 수행하도록 설정

  • open your scheme editor, select “Build” in the sidebar and make sure “Parallelize Build” is checked at the top.

• Xcode Schemes에서 Run시 Test는 제외되도록 설정

• Limiting your Objective-C/Swift interface: https://patrickbalestra.com/blog/2018/08/27/improving-your-build-time-in-xcode-10.html

Reference

• 분석: https://github.com/RobertGummesson/BuildTimeAnalyzer-for-Xcode
• https://medium.com/@joshgare/8-tips-to-speed-up-your-swift-build-and-compile-times-in-xcode-73081e1d84ba
• https://github.com/fastred/Optimizing-Swift-Build-Times
• https://patrickbalestra.com/blog/2018/08/27/improving-your-build-time-in-xcode-10.html
• https://www.zomato.com/blog/ios-compile-time
• https://www.hackingwithswift.com/quick-start/swiftui/how-to-use-instruments-to-profile-your-swiftui-code-and-identify-slow-layouts
• https://hackernoon.com/speed-up-swift-compile-time-6f62d86f85e6