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build-acceleration

Use when reducing C/C++ compilation times with ccache, sccache, distcc, unity builds, precompiled headers, split DWARF, IWYU, or link time reduction.

.devin/skills/build-acceleration/SKILL.md

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# Build acceleration

Reduce C/C++ build times: measure first, then apply caching (ccache, sccache), distributed compilation (distcc), unity builds, precompiled headers, split DWARF, and include pruning.

## Contract

| Field | Bound contract |
|---|---|
| Trigger | A C/C++ build is too slow, or the task sets up ccache, sccache, distcc, precompiled headers, unity builds, split DWARF, or IWYU include pruning. |
| Authority | Reversible local: writes only build configuration (`CMakeLists.txt`, `ccache.conf`, environment variables) and local build outputs; rollback is version control plus deleting the build directory. No remote mutation. |
| Side effect | Local builds and cache daemons; distcc and sccache contact user-configured workers or storage. |
| Done | The chosen technique is configured and a before/after build time is measured, or the blocker is reported. |

## Inputs