what happens during build process
Generated on 9/24/2024
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During the build process in Xcode 16, several improvements have been made to enhance efficiency and clarity. One of the key changes is the introduction of explicitly built modules. This approach involves splitting the compilation of each source file into three distinct phases: scanning, building modules, and finally building the original code. This separation allows for better parallelism and more detailed build logs, making it easier to identify where time is being spent and to optimize builds.
Explicitly built modules also improve reliability by providing precise dependencies and deterministic build graphs. This means that the compiler runs the same way every time, and any build failures can be reproduced by running the failing task again in isolation. Additionally, the build system can now make more informed scheduling choices, avoiding tasks that are not ready to run and making efficient use of available execution lanes.
For more detailed insights into the build process and explicitly built modules, you can refer to the session Demystify explicitly built modules (05:55).
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