如何为 Cargo 设置默认构建目标？

Question

I tried to make 'Hello World' in Rust using this tutorial , but the build command is a bit verbose:

cargo +nightly build --target wasm32-unknown-unknown --release

Is it possible to set the default target for cargo build ?

Answer 1

You could use a Cargo configuration file to specify a default target-triple for your project. In your project's root, create a .cargo directory and a config file in it with the following contents:

[build]
target = "wasm32-unknown-unknown"

Answer 2

As listed in the Cargo documentation , you can create a .cargo/config and specify the target:

[build]
target = "my-custom-target"

Answer 3

If you're able to use unstable features, following documentation and especially per-package-target feature add this to you crate manifest that usually named Cargo.toml

cargo-features = ["per-package-target"]

[package]
forced-target = "wasm32-unknown-unknown"
# and/or:
default-target = "wasm32-unknown-unknown"

This requires nightly toolchain.