Build Performance Optimization

概要

This skill provides a systematic framework for diagnosing and resolving slow Xcode build times across all Apple platforms. Based on industry best practices and official WWDC guidance, it guides developers through measuring baselines, analyzing the build timeline to identify critical paths, and applying high-impact optimizations like Swift type-checking improvements, conditional script execution, and target parallelization. Whether you are dealing with sluggish incremental builds or scaling a CI/CD pipeline, this skill ensures you make data-driven improvements rather than guessing at performance bottlenecks.

主な機能

• Advanced build timeline analysis to identify and shorten the critical path
• 61 GitHub stars
• Step-by-step measurement workflows to establish build time baselines
• Swift type-checking bottleneck identification using compiler flags
• Optimization patterns for build phase scripts and sandbox configurations
• Configuration tuning for incremental compilation and architecture settings

ユースケース

• Reducing long incremental build times during active local development
• Investigating and resolving build performance regressions in complex projects
• Optimizing CI/CD pipeline speed to reduce feedback loops and infrastructure costs