# blade-build/blade-build

Blade is a powerful build system from Tencent, supports many mainstream programming languages, such as C/C++, java, scala, python, protobuf...

Repository: https://github.com/blade-build/blade-build
Canonical: https://ross.abutalabs.com/products/blade-build
Homepage: https://blade-build.github.io
Language: Python
License: NOASSERTION
License Family: other
Topics: python, build-system, cplusplus, java, build-tool, multilingual, monorepo, ninja, scala, protobuf
Last push: 2026-08-13T14:17:42+00:00

## Health v2 (maintenance only)
Score: 97/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 97, release rhythm 95, longevity 100
- inputs: {"age_days": 5124, "days_push": 20, "days_rel": 38, "gap_med": 24, "n_releases_24m": 4}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2105, forks 489 (observed 2026-08-28T04:06:13.821266+00:00)

## What it is
Blade is a declarative, high-performance build system from Tencent optimized for large-scale monorepo development, primarily for C/C++ but also supporting Java, Python, Scala, Go, and Protocol Buffers. It uses a Ninja backend for incremental parallel builds and integrates testing, sanitizers, and coverage into a single command-line tool.

## Use cases
- build a large c++ monorepo with one command
- run incremental parallel builds and tests
- manage protobuf and multi-language targets in one build graph
- enable asan/tsan sanitizers and coverage via build flags
- replace make and autotools in a big codebase
- build the same code on linux macos and windows

## When to choose
- you maintain a large C/C++ monorepo with trunk-based development
- you want declarative BUILD files with automatic dependency analysis
- you need built-in parallel testing, sanitizers, and coverage
- you need cross-platform builds with gcc, clang, and MSVC

## When to avoid
- you have a small single-language project where make or cmake suffices
- your ecosystem relies on tooling tightly coupled to cmake or bazel
- you need a GUI-driven build configuration

## Facets
- artifact type: cli-tool
- maturity: active
- function: build-tool, testing, ci-cd
- domain: developer-tools, compilers, backend
- platform: windows, cli, python
- tags: build-system, monorepo, ninja, protobuf, cxx, declarative-build, incremental-build, linux, macos

## Member repositories
- blade-build/blade-build (main) score 97

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:13.821266+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 2026-08-30T08:19:38.500135+00:00, confidence not recorded.
  - readme: https://github.com/blade-build/blade-build (fetched 2026-08-28T04:06:13.821266+00:00, sha d88a81d9cc3e)
  - homepage: https://blade-build.github.io (fetched 2026-08-29T10:34:17.099388+00:00, sha f0512ff81a6f)
- Data as of 2026-08-30T08:39:29.467469+00:00.