Downloads
Releases of the build3 build system, newest first.
Each tarball is a complete build system: the top makefile, a description of every
component, and the target descriptions it ships with. It carries no sources — the
build fetches those and checks them against the sums it records. The
installation page describes how to use one.
| Version | Description |
| 2026.10e |
The latest. All known bugs are fixed. |
| 2026.10 |
Perlmutter target added. |
| 2026.09 |
Wombat and engaging targeted. |
Unless you need to reproduce an older build, take the newest. A build
system and the component versions it pins go together; mixing one release's targets
with another's part files is not supported.
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