怎么提升构建速度
Asked on 2025-03-06
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To improve build speed, Apple introduced several enhancements at WWDC 2024, particularly focusing on the concept of explicitly built modules. Here are some key points to consider:
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Explicitly Built Modules: This feature allows the build system to take control of module builds, improving parallelism and making the build process more efficient. By making module builds explicit tasks, the system can better schedule and manage these tasks, reducing the time spent waiting for modules to be built. This is particularly beneficial for Swift, where you can opt-in to use explicitly built modules for faster builds (Demystify explicitly built modules).
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Improved Parallelism: By splitting the compilation process into distinct phases (scanning, building modules, and building the original code), Xcode 16 enhances parallelism. This means that different parts of the build process can occur simultaneously, reducing overall build time (What’s new in Xcode 16).
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Build System Awareness: The build system is now more aware of the module graph, allowing it to make informed scheduling choices. This prevents execution lanes from being blocked by tasks waiting for module builds, leading to more efficient use of resources (Demystify explicitly built modules).
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Unified Project Settings: By unifying project settings, you can reduce the number of module variants that need to be built, allowing modules to be shared across targets. This can further optimize build times (Demystify explicitly built modules).
These improvements are part of the updates in Xcode 16 and are designed to make the build process faster and more efficient without requiring changes to your code.
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