[PATCH 0/3] rust: generate bindings via cbindgen

Hi,

this small patch series introduces support for cbindgen(1). This tool is used to generate C headers from `extern "C"` blocks so that Rust code can easily be called from C code.

For now, the only use case is to verify that our varint reimplementation matches the C implementation. But later on this can and will be used to call Rust-specific features from C, as well.

The topic is built on top of c54a18ef67 (The twenty-second batch, 2025-10-22) with ps/ci-rust at e509b5b8be (rust: support for Windows, 2025-10-15) merged into it.

Thanks!

Patrick

---
Patrick Steinhardt (3):
      ci: use Debian instead of deprecated i386/ubuntu
      meson: rename Rust library target
      rust: generate bindings via cbindgen

 .github/workflows/main.yml |  3 +--
 .gitignore                 |  1 +
 .gitlab-ci.yml             |  2 +-
 Makefile                   | 14 +++++++++++---
 cbindgen.toml              |  7 +++++++
 ci/install-dependencies.sh | 10 +++++-----
 ci/lib.sh                  |  2 +-
 meson.build                | 25 ++++++++++++++++++++-----
 shared.mak                 |  1 +
 src/meson.build            |  2 +-
 varint.c                   |  9 +++++++++
 11 files changed, 58 insertions(+), 18 deletions(-)

--- base-commit: 8654b230d9afe1326340989dd7082997c672472e change-id: 20251009-b4-pks-rust-cbindgen-d80779ed2269