https://peter0x44.github.io/tags/gcc/Recent content in Gcc on File Descriptor TwoHugo -- 0.148.1en-us2025 Peter0x44Fri, 22 May 2026 00:00:00 +0000https://peter0x44.github.io/posts/super-gcc/Fri, 22 May 2026 00:00:00 +0000https://peter0x44.github.io/posts/super-gcc/<p>A while ago, I became interested in reducing my compile times, and examined various methods for this.</p> <p>This blog post is about enabling all compiler options that I believe can make gcc faster when compiling code, and measuring the gains I got as a result.</p> <h2 id="how-to-build-it">How to Build It</h2> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>mkdir build-gcc16 </span></span><span style="display:flex;"><span>cd build-gcc16 </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span>../gcc-16.1.0/configure <span style="color:#ae81ff">\ </span></span></span><span style="display:flex;"><span><span style="color:#ae81ff"></span> --prefix<span style="color:#f92672">=</span><span style="color:#e6db74">&#34;</span>$HOME<span style="color:#e6db74">/opt/gcc16-super&#34;</span> <span style="color:#ae81ff">\ </span></span></span><span style="display:flex;"><span><span style="color:#ae81ff"></span> --program-prefix<span style="color:#f92672">=</span>super- <span style="color:#ae81ff">\ </span></span></span><span style="display:flex;"><span><span style="color:#ae81ff"></span> --enable-languages<span style="color:#f92672">=</span>c,c++ <span style="color:#ae81ff">\ </span></span></span><span style="display:flex;"><span><span style="color:#ae81ff"></span> --disable-multilib <span style="color:#ae81ff">\ </span></span></span><span style="display:flex;"><span><span style="color:#ae81ff"></span> --with-build-config<span style="color:#f92672">=</span><span style="color:#e6db74">&#39;bootstrap-native bootstrap-lto bootstrap-O3&#39;</span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span>make profiledbootstrap -j<span style="color:#66d9ef">$(</span>nproc<span style="color:#66d9ef">)</span> </span></span><span style="display:flex;"><span>make install-strip </span></span></code></pre></div><p>Expect to be waiting for a while on <code>make profiledbootstrap</code>. It took 72 minutes of wall time on my laptop (AMD Ryzen AI MAX+ PRO 395, 16c/32t, <code>-j32</code>).</p>