How to compile some dependencies with release

user_246376 0
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I'd like to build my rust app with "dev" profile, but some of the dependencies with "release" profile (because otherwise they are really slow). How can I selectively specify profiles for my crate dependencies?

rust-cargo rust
1 Answers

Cargo is able to override profile for a specific package.

From the reference :

Profile settings can be overridden for specific packages and build-time crates. To override the settings for a specific package, use the package table to change the settings for the named package:

# The `foo` package will use the -Copt-level=3 flag.
[profile.dev.package.foo]
opt-level = 3

While compiling with dev profile, this will override optimize level for foo package.

  • If you want to optimize few dependency with a default value from dev profile and more from a release profile:
#override target package to build with dev default(opt-level) 
[profile.dev.package.bar]
opt-level = 0 

#override all other dependencies to build with release default(opt-level) 
[profile.dev.package."*"]
opt-level = 3
  • If you want to optimize all of your dependencies except your application(also workspace members)
[profile.dev.package."*"]
opt-level = 3

See also :

user_16015710
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