build2
The facts below are what the maker publishes about build2, checked and dated. Our editors have not written about it yet.
The facts
Each one read from build2's own pages, with the date it was checked.
What it does
- Build performance
- Release 0.18.1 included build-system performance improvements, including optimized builds for read-only projects such as dependencies.checked 4 Oct 2026
- Compiler support
- The release announcement lists testing with GCC, Clang, MinGW GCC, and MSVC.checked 4 Oct 2026
- Components
- The toolchain includes a general-purpose build system, a package manager, and a project manager.checked 4 Oct 2026
- Downloads
- The 0.18.1 release provides official binary packages for Windows and several Linux distributions; Mac OS packages are available through Homebrew.checked 4 Oct 2026
- Integrations
- build2 supports system package manager interactions for Debian, Fedora, and similar distributions, including querying installed package versions and optionally installing dependencies from system repositories.checked 4 Oct 2026
- Language scope
- The build model is general enough for DAG-based operations and is not limited to C/C++ or compiled languages.checked 4 Oct 2026
- License
- The project identifies build2 as MIT-licensed open-source software.checked 4 Oct 2026
- Notable limitation
- The toolchain introduction says build2 can work without a version control system, but functionality is reduced.checked 4 Oct 2026
- Other installation channels
- The release announcement says Mac OS packages are available through Homebrew and FreeBSD packages through ports.checked 4 Oct 2026
- Package manager
- The package manager can fetch, unpack, and configure packages, and release 0.18.1 introduced a fetch cache.checked 4 Oct 2026
- Package registry
- The project describes cppget.org as a central repository or registry for open-source packages.checked 4 Oct 2026
- Package requirements
- Package manifests can express requirements such as C++ standards, operating systems, and compiler families or versions.checked 4 Oct 2026
- Packages
- bpkg is primarily used for package consumption and relies on the build system to build packages.checked 4 Oct 2026
- Performance
- Version 0.18.1 adds a fetch cache to speed package fetching, unpacking, and configuration, along with build-system performance improvements for read-only projects.checked 4 Oct 2026
- Product
- build2 is an open-source toolchain for building and packaging C/C++ projects.checked 4 Oct 2026
- Project development
- bdep supports project development and relies on bpkg to build project packages and their dependencies.checked 4 Oct 2026
- Release
- The latest release described on the maker's announcement page is build2 toolchain 0.18.1, released April 16, 2026.checked 4 Oct 2026
- Security
- The release announcement publishes SHA256 checksums for source and binary packages and a repository certificate fingerprint for cppget.org.checked 4 Oct 2026
- Tested systems
- Release 0.18.1 was tested on Windows, Linux, Mac OS, and FreeBSD, including x86_64 and aarch64 on Linux and Mac OS.checked 4 Oct 2026
- Testing and installation
- The build system manual describes modules that provide test, install, uninstall, and source-distribution operations.checked 4 Oct 2026
- Toolchain
- The build2 toolchain includes the build system, the bpkg package dependency manager, and the bdep project dependency manager.checked 4 Oct 2026
Money
- FreeBSD
- The 0.18.1 announcement says FreeBSD packages are available through ports and reports testing on FreeBSD.checked 4 Oct 2026
Where it runs
- Windows and Linux downloads
- Release 0.18.1 provides official binary packages for Windows and several Linux distributions, including Debian, Ubuntu, Fedora, RHEL, and generic Linux.checked 4 Oct 2026
Alternatives to build2
- 1

AWS CodeBuild
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fastlane
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Nx
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Bazel
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FASTBuild
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Open Build Service
Free planWebAPILinuxSelf-hosted6.6Free plan
