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build2 is an open source, cross-platform toolchain designed for building and packaging C++ code, developed and published by The build2 authors. Combining the roles of a build system and a package manager in a single solution, it targets developers working with C and C++ who want a unified workflow for compiling projects, managing dependencies, and distributing their own software. Its stated goal is to approximate the convenience offered by Rust Cargo, bringing a comparable level of ease of use to the C++ ecosystem while providing more depth and flexibility for projects with advanced or unusual requirements. This positioning makes it relevant to the development tools category, specifically within the build automation and package management segment, where it serves as an alternative to maintaining separate utilities for compilation, dependency resolution, and package publication. Typical use cases include configuring and building C++ projects on multiple operating systems, consuming third-party libraries through integrated package management rather than manual acquisition, and publishing packages so that other developers can reuse them. Published packages created with build2 can be found on the public repository at https://cppget.org, which serves as the central distribution point for the ecosystem and allows consumers of a package to locate and integrate it into their own builds. As a cross-platform toolchain, build2 is intended for teams and individual developers whose code must be built in heterogeneous environments, and its open source nature means the toolchain can be inspected, modified, and adopted without licensing fees. The current release is version 0.18.1, and the catalog records a single version of the software, indicating that this release is the one presently available for installation. Prospective users evaluating C/C++ build and packaging solutions can consult the package repository to assess the range of libraries already available through the toolchain.
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