failed to run custom build command for `v4l2-sys-mit v0.2.0`

[zxcqirara]

Just created a new project, added this lib and tried to compile it. It throws this error:

error: failed to run custom build command for `v4l2-sys-mit v0.2.0`

Caused by:
  process didn't exit successfully: `/home/user/proj/target/debug/build/v4l2-sys-mit-844fdf7983ccc2a0/build-script-build` (exit status: 101)
  --- stderr
  thread 'main' panicked at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/bindgen-0.56.0/src/ir/context.rs:846:9:
  "v4l2_pix_format_union_(anonymous_at_/usr/sbin/__/lib64/gcc/aarch64-linux-gnu/14_1_0/__/__/__/__/aarch64-linux-gnu/include/linux/videodev2_h_500_2)" is not a valid Ident
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

I'm on x64 linux (WSL) and trying to compile it for aarch64 linux My Cargo.toml:

[package]
name = "proj"
version = "0.1.0"
edition = "2021"

[dependencies]
nokhwa = { version = "0.10.4", features = ["input-native", "output-threaded"] }

[unwx]

I encountered the same build failure. The root cause explained here: https://stackoverflow.com/a/76443281

I'm new to Rust, but it looks like:

• The v4l crate updated its bindgen dependency from 0.59 to 0.65 to solve that problem: https://github.com/raymanfx/libv4l-rs/commit/cf6d4125d3f37f24d18c325fd369f503d9f12a88
• nokhwa updated its v4l dependency on June 4th, 2023: https://github.com/l1npengtul/nokhwa/commit/f1405412e5e45f04339670d2f04aa88ccadb486b
• However, the latest nokhwa package on crates.io was updated on May 14th, 2023, and doesn't include this fix.

---

Workaround:

Building nokhwa from source (the 0.10 branch) resolved the issue for me.

Additional Notes:

On Fedora, I needed to install the following development packages for the build to succeed:

fontconfig-devel, alsa-lib-devel, libudev-devel