fatal error: 'cmath' file not found

[juntyr]

Crate name

numcodecs-sz3

Build failure link

https://docs.rs/crate/numcodecs-sz3/0.4.0/builds/1886099

Additional details

v0.3.0 (latest build here: https://docs.rs/crate/numcodecs-sz3/0.3.0/builds/1805870/x86_64-unknown-linux-gnu.txt) succeeded, only Rust code changed between these two releases. I'm not sure why the C build for sz3-sys now fails, is this an issue on my end (CI is still happy) or did something change in the docs.rs build env?

[syphar]

@juntyr we upgraded the build image to ubuntu noble: rust-lang/crates-build-env#168

due to the long list of changes this involved some risk of breakage.

Do you see / know which package might be missing for the build?

I'm happy to revert the whole change, but I would prefer just to add the missing image.

[syphar]

googling gives me no clear answer, possibly adding libstdc++-14-dev could help?

[juntyr]

I'm unfortunately also not sure which package would be needed, but libstdc++-14-dev sounds like a good guess to me. The only time I've seen a similar error was when compiling a similar crate (also has C++ code it needs to build) (locally) without a proper sysroot.

How much work would it be to see if adding libstdc++-14-dev would help?

[syphar]

just testing locally, have to rebuild some containers first

[syphar]

Build passed now

[juntyr]

Thank you so much for your help @syphar <3