Configure cargo to use -Ctarget-cpu=native

[rj00a]

Objective

Tell rustc to use native CPU features when building the project. Especially useful for the benchmarks.

Solution

Add a .cargo/config.toml with the following contents:

[build]
rustflags = ["-Ctarget-cpu=native"]

[dyc3]

This makes it so that built binaries can possibly be not portable. Eg. you build a docker image on your dev machine, and you try to run it on a CPU that doesn't have all the features your dev machine has, it will crash and burn.

[rj00a]

True, but I didn't think it would matter since the config only applies to those building valence from the repo AFAIK. But I can still see that coming back to bite us.