Dune Libvpx May 2026

(let ((target (ocaml-config target_triplet))) (cond ((string= target "aarch64-linux-gnu") (run ./configure --target=arm64-linux-gcc ...)) ((string= target "x86_64-w64-mingw32") (run ./configure --target=x86_64-win64-gcc ...)))) libvpx includes many legacy codecs (VP8, VP9 high bit-depth, real-time only modes). Use Dune’s (select ...) to conditionally compile only the features you need. For example, to disable VP8 entirely, pass --disable-vp8-encoder to ./configure . Symbol Hiding for Safer Linking Add this to your libvpx configure step to prevent symbol leaks:

Try it yourself: Clone this example repository (hypothetical) and run dune build @install . You’ll have a VP9 encoder binary that is completely independent of your system’s multimedia libraries. Have you integrated libvpx with an unconventional build system? Share your war stories in the comments below. dune libvpx

In the world of open-source video codecs, libvpx (maintained by the WebM Project) remains the gold standard reference implementation for VP8, VP9, and AV1. However, as any encoding engineer will tell you, integrating libvpx into a modern, scalable, or cross-platform build system can be a nightmare. Enter Dune . Symbol Hiding for Safer Linking Add this to

(rule (target libvpx.a) (deps (source_tree libvpx-src)) (action (progn (chdir libvpx-src (progn (run ./configure --target=x86_64-linux-gcc ; Change per host --disable-shared --enable-static --disable-examples --disable-tools --disable-docs --disable-unit-tests --size-limit=4096x2160 --enable-postproc --enable-vp9-postproc --enable-runtime-cpu-detect --prefix=%workspace_root/_build/default/libvpx/install) (run make -j4) (run make install))) (copy %workspace_root/_build/default/libvpx/install/lib/libvpx.a libvpx.a)))) Finally, create a dune file in your project’s root or a stubs directory: Share your war stories in the comments below

The real power of "Dune libvpx" is not about replacing ./configure , but about . Once you have a Dune rule that produces libvpx.a , you can version-control that rule, share it across projects, and even publish it as an opam package.