CODEWITHSUNDEEP
rustrust-cargobuild-script
Thorkil Værge
Thorkil Værge

Reputation: 3797

Set build-override for dependency

I'm depending on a crate that has build-override.opt-level = 3 set for all build profiles, because its build script takes very long to run with the default opt-level for build scripts, which is 0.

How do I make the build script compile with the same opt-level value in a downstream binary?

Upvotes: 0

Views: 133

Answers (1)

5422m4n
5422m4n

Reputation: 950

I'm not 100% sure if I got you right, but If your goal is to override the opt-level for this very crate you are depending on, then you can override it in your crate Cargo.toml this way:

# The `foo` package will use the -Copt-level=0 flag.
[profile.dev.package.foo]
opt-level = 0

This will only apply for the dev profile and only take affects to a crate named foo in your dependency tree.

Just in case, if this very crate you are depending on is only one of the build-dependencies you must override it this way:

# Set the settings for build scripts and proc-macros.
[profile.dev.build-override]
opt-level = 0

This still applies for the dev profile, but is not anymore dependency specific.

Read more about it in the docs: https://doc.rust-lang.org/cargo/reference/profiles.html?highlight=build-override#overrides

Upvotes: 0

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