Conditional rustflags?

help
#1

I know that there is a [build] section in .cargo/config file that accepts rustflags, but the problem is, it is effective all the time.

I would like to use some rustflags ONLY under RELEASE builds. For example, is there something equivalent to:

[build.dev]
rustflags = [
    "-C",
    "target-cpu=native"
]

Note that I only want those flags under RELEASE builds, and they shall have no effect under DEV builds.

Thx in advance.

#2

"Debug" and "Release" are called profiles, so what you want is profile-specific RUSTFLAGS. A quick Google search for those terms brings up this Cargo issue, so it looks like this is being worked on.

1 Like
#3

Thx! So do we have a workaround for this issue right now? Is there a profile-specific pre-build task available that can change env variables?