rust - 如何指定自定义 Cargo 输出目录？

Question

我把它放在我的 Cargo.toml 中

[build]
target-dir = "../my-target"

但是，Cargo 无法识别此 key 。

cargo run --release --bin my_project

warning: unused manifest key: build
error: failed to open: /.../project-root/target/releases/.cargo-lock

Caused by:
  Permission denied (os error 13)

带有环境变量的自定义目标目录有效:

CARGO_TARGET_DIR=../my-target cargo run --bin my_project

但是我如何在 Cargo.toml 中指定 '../my-target'？

Answer 1

[build] 是一个 Cargo-level configuration而不是为了项目:

This document will explain how Cargo’s configuration system works, as well as available keys or configuration. For configuration of a project through its manifest, see the manifest format.

将您的 [build] 放入 $PROJECT_DIR/.cargo/config 甚至 $HOME/.cargo/config 中。有关所有选项，请参阅上面的链接。