如何为特定的rustup工具链安装Rust目标？ [英] How to install a Rust target for a specific rustup toolchain?

问题描述

我在64位Windows计算机上使用 rustc 和 cargo 来编译32位应用程序。使用稳定的工具链时，此功能可以很好地工作，但是当我尝试使用Beta工具链时，它会失败。

I am using rustc and cargo on my 64-bit Windows machine to compile a 32-bit application. This work fine when using the stable toolchain, but when I try to use the beta toolchain it fails.

使用 rustup成功安装了Beta工具链安装Beta 。在项目文件夹中，有一个 .cargo / config 文件，其中包含以下几行：

The beta toolchain was successfully installed with rustup install beta. In the project folder there is a .cargo/config file containing the following lines:

[build]
target = "i686-pc-windows-msvc"

[target.i686-pc-windows-msvc]
rustflags = ["-Ctarget-feature=+crt-static"]

在运行货物+ beta时构建会发生以下错误：

When running cargo +beta build the following error occurs:

error[E0463]: can't find crate for `core`
  |
  = note: the `i686-pc-windows-msvc` target may not be installed

我已经尝试运行 rustup target add i686-pc-windows-msvc 来解决此问题，但没有帮助； 启动目标列表甚至将其显示为已安装。可能此命令仅添加了稳定目标，而我找不到如何指定beta工具链。

I have tried running rustup target add i686-pc-windows-msvc to fix the issue but it didn't help; rustup target list even displays it as "installed". Possibly this command only adds the target for stable, and I couldn't find out how to specify the beta toolchain.

如何添加另一个（非默认）目标

How can I add another (non-default) target for the beta toolchain?

推荐答案

阅读有关 rustup target add 的帮助：

$ rustup target add --help
rustup-target-add
Add a target to a Rust toolchain

USAGE:
    rustup target add [OPTIONS] <target>...

FLAGS:
    -h, --help    Prints help information

OPTIONS:
        --toolchain <toolchain>    Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see
                                   `rustup help toolchain`

因此，您想要：

rustup target add i686-pc-windows-msvc --toolchain beta

我相信默认情况下会将目标添加到当前工具链中，因此您也可以这样做：

I believe it will add the target to the "current" toolchain by default, so you could also do:

rustup override set beta               # in your project directory
rustup target add i686-pc-windows-msvc #
cargo build                            # no more +beta

---

---

rustup目标列表甚至将其显示为已安装

rustup target list even displays it as "installed"

阅读有关升级目标列表的帮助：

$ rustup target list --help
rustup-target-list
List installed and available targets

USAGE:
    rustup target list [OPTIONS]

FLAGS:
    -h, --help    Prints help information

OPTIONS:
        --toolchain <toolchain>    Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see
                                   `rustup help toolchain`

因此，您想要：

rustup target list --toolchain beta

这篇关于如何为特定的rustup工具链安装Rust目标？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！