https://blog.farre.se/tags/mach Posts tagged "mach" on farre's blog https://blog.farre.se/posts/2026/04/09/buildcache-with-mach/ https://blog.farre.se/posts/2026/04/09/buildcache-with-mach/ Thu, 09 Apr 2026 00:00:00 +0000 <p>I’m happy to announce that <a href="https://gitlab.com/bits-n-bites/buildcache">buildcache</a> is now a first-class compiler cache in <code class="language-plaintext highlighter-rouge">mach</code>. This has been a long time coming, and I’m excited to finally see it land.</p> <!-- more --> <p>For those unfamiliar, <a href="https://gitlab.com/bits-n-bites/buildcache">buildcache</a> is a compiler cache that can drastically cut down your rebuild times by caching compilation results. It’s similar to ccache, but even more so sccache, in that it supports C/C++ out of the box, as well as Rust. It has some nice unique properties of its own though, which we’ll look at more closely in following posts.</p> <h2 id="getting-started">Getting started</h2> <p>Setting it up is straightforward. Just add the following to your mozconfig:</p> <figure class="highlight"><pre><code class="language-bash" data-lang="bash">ac_add_options <span class="nt">--with-ccache</span><span class="o">=</span>buildcache</code></pre></figure> <p>Then build as usual:</p> <figure class="highlight"><pre><code class="language-bash" data-lang="bash">./mach build</code></pre></figure> <p>That’s it.</p> <h2 id="give-it-a-try">Give it a try</h2> <p>If you run into any issues, please file a bug and tag me. I’d love to hear how it works out for people, and any rough edges you might hit.</p> <script src="https://utteranc.es/client.js" repo="farre/blog" issue-term="og:title" label="comments" theme="github-light" crossorigin="anonymous" async=""> </script>