# yrnkrn/zapcc

zapcc is a caching C++ compiler based on clang, designed to perform faster compilations

Repository: https://github.com/yrnkrn/zapcc
Canonical: https://ross.abutalabs.com/products/zapcc
Language: C++
License: NOASSERTION
License Family: other
Topics: clang, llvm, c-plus-plus, precompiled-headers
Last push: 2020-07-21T10:22:01+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3002, "days_push": 2234, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1272, forks 63 (observed 2026-08-28T04:04:12.263109+00:00)

## What it is
zapcc is a caching C++ compiler based on clang that speeds up builds using an in-memory compilation cache in a client-server architecture. The zapcc client reuses a persistent zapccs server process to remember compilation information between runs.

## Use cases
- speed up c++ compilation times
- cache c++ builds like ccache but faster
- reduce incremental build times in large c++ projects
- drop-in clang replacement with caching
- avoid recompiling unchanged headers with precompiled header caching

## When to choose
- you build large C++ codebases repeatedly and want faster incremental builds
- you already use clang and want a drop-in faster replacement
- you have RAM to spare for an in-memory compilation cache server

## When to avoid
- you need MSVC (Visual C++) target binaries, which are unsupported
- memory-constrained environments where a resident compiler server is impractical
- you need actively maintained tooling - last release was 2020
- you need non-x64 or exotic platform support

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: compiler, caching, build-tool, developer-tools
- domain: developer-tools, compilers, performance
- platform: windows, cpp, cli
- tags: clang, llvm, compilation-cache, c-plus-plus, client-server, precompiled-headers, command-line, linux, macos

## Member repositories
- yrnkrn/zapcc (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:12.263109+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T05:03:19.617804+00:00, confidence not recorded.
  - readme: https://github.com/yrnkrn/zapcc (fetched 2026-08-28T04:04:12.263109+00:00, sha d054dbc78f89)
- Data as of 2026-08-30T08:39:29.467469+00:00.