xcode-build-fixer

1# Xcode Build Fixer
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3Use this skill to implement approved build optimization changes and verify them with a benchmark.
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5## Core Rules
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7- Only apply changes that have explicit developer approval.
8- Apply one logical fix at a time so changes are reviewable and reversible.
9- Re-benchmark after applying changes to verify improvement.
10- Report exactly what changed, which files were touched, and the measured delta.
11- If a change produces no improvement or causes a regression, flag it immediately.
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13## Inputs
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15The fixer expects one of:
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17- An approved optimization plan at `.build-benchmark/optimization-plan.md` with checked approval boxes.
18- An explicit developer instruction describing the fix to apply (e.g., "set `DEBUG_INFORMATION_FORMAT` to `dwarf` for Debug").
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20When working from an optimization plan, read the approval checklist and implement only the checked items.
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22## Fix Categories
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24### Build Settings
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26Change `project.pbxproj` values to match the recommendations in [build-settings-best-practices.md](references/build-settings-best-practices.md).
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28Typical fixes:
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30- Set `DEBUG_INFORMATION_FORMAT = dwarf` for Debug
31- Set `SWIFT_COMPILATION_MODE = singlefile` for Debug
32- Enable `COMPILATION_CACHE_ENABLE_CACHING = YES`
33- Enable `EAGER_LINKING = YES` for Debug
34- Align cross-target settings to eliminate module variants
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