Buck2 vs Xmake

Buck28.8Visit Xmake8.7Visit

Higher score Buck2 #5 in Build Automation Software 8.8/10 Free plan Free plan✓ 4 of 5 features Visit Buck2

vs

Xmake #6 in Build Automation Software 8.7/10 Free plan Free plan✓ 5 of 5 features Visit xmake

• Buck2 fits best

  Teams wanting Bazel-style distributed builds

• Xmake fits best

  Cross-platform C/C++ builds and packaging

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Side by side

Feature	Buck2 8.8/10 Visit ↗	Xmake 8.7/10 Visit ↗
At a glance
Editor score	8.8	8.7
Ranking	#5 in Build Automation Software	#6 in Build Automation Software
Best for	Teams wanting Bazel-style distributed builds	Cross-platform C/C++ builds and packaging
Pricing model	Free	Free
Starting price	Free plan	Free plan
Free plan	✓	✓
Free trial	—	—
Deployment	Self-hosted	Desktop
Platforms	Linux, macOS, Windows	Windows, macOS, Linux, Android
Support	Community, Docs	Docs, Community
Integrations	4 integrations	4 integrations
Built for	Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features Buck2 4/5 · Xmake 5/5
Build as code	✓	✓
Dependency locking	Not checked yet	✓ (best)
Build caching	✓	✓
Remote execution	✓	✓
Artifact packaging	✓	✓
Specs
Supported operating systems	Multi-platform	Multi-platform
Our review
Pros	Supports local, remote, and hybrid build execution Starlark enables custom rules and multi-language builds Incremental graphs and action caching reduce repeated work	Built-in C/C++ dependency and package management Local, remote, and distributed compilation support Cross-compilation, project generation, and xpack packaging
Cons	No stable release tag was available at the time of research Distributed execution may require compatible remote infrastructure Its breadth may exceed the needs of smaller repositories	Lua-based configuration adds a language-specific learning curve Its core focus is native C/C++ build workflows Remote compilation is specified for Linux, macOS, and Windows servers
Our verdict	Buck2 is an open-source build system developed by Meta for large-scale, multi-language repositories. It uses Starlark definitions for build configuration and custom rules, with support for C++, Python, Rust, Java, Kotlin, Go, Erlang,… Read the review →	xmake is an open-source, cross-platform build utility for developers working on C, C++, and other supported-language projects. Its Lua-based xmake.lua files define build logic, while the tool can compile source directly or generate project… Read the review →

Strengths and trade-offs

• Buck2 — where it wins

  • Supports local, remote, and hybrid build execution
  • Starlark enables custom rules and multi-language builds
  • Incremental graphs and action caching reduce repeated work

  Where it doesn't

  • No stable release tag was available at the time of research
  • Distributed execution may require compatible remote infrastructure
  • Its breadth may exceed the needs of smaller repositories

• Xmake — where it wins

  • Built-in C/C++ dependency and package management
  • Local, remote, and distributed compilation support
  • Cross-compilation, project generation, and xpack packaging

  Where it doesn't

  • Lua-based configuration adds a language-specific learning curve
  • Its core focus is native C/C++ build workflows
  • Remote compilation is specified for Linux, macOS, and Windows servers

• Buck28.8/10 · Free plan

  An open-source choice for Bazel-style builds with caching and remote execution.

  Visit Buck2Full verdict →
• Xmake8.7/10 · Free plan

  A capable open-source choice for C/C++ builds, caching, cross-compilation, and packaging.

  Visit xmakeFull verdict →