我有 ubuntu x86_64 容器,并且
cargo build
运行良好。
但我也需要构建 x86 库版本。
据我了解,我需要添加 i686 工具链和目标。
rustup target add i686-unknown-linux-gnu done successful
rustup toolchain install stable-i686-unknown-linux-gnu finished with error
$ rustup toolchain install stable-i686-unknown-linux-gnu
info: syncing channel updates for 'stable-i686-unknown-linux-gnu'
info: latest update on 2018-11-08, rust version 1.30.1 (1433507eb 2018-11-07)
info: downloading component 'rustc'
info: downloading component 'rust-std'
info: downloading component 'cargo'
info: downloading component 'rust-docs'
info: installing component 'rustc'
info: installing component 'rust-std'
info: installing component 'cargo'
info: installing component 'rust-docs'
stable-i686-unknown-linux-gnu installed - (error reading rustc version)
和
$ rustup default stable-i686
info: using existing install for 'stable-i686-unknown-linux-gnu'
info: default toolchain set to 'stable-i686-unknown-linux-gnu'
stable-i686-unknown-linux-gnu unchanged - (error reading rustc version)
我是否错过了什么或采取了错误的方法?
您不必更改工具链,而是必须将目标添加到当前工具链(确保首先切换回原始工具链)。
$ rustup target install i686-unknown-linux-gnu
$ cargo build --target=i686-unknown-linux-gnu
当然,您还需要在系统上安装 32 位库,例如在 ubuntu 上你可以通过
安装它们$ sudo apt install gcc-multilib
(有关更多信息,请参阅如何在 64 位 Ubuntu 上编译 32 位应用程序?)
底部链接是一篇很棒的文章。而且
cargo
让一切变得如此简单。
cargo new --bin rust
Created binary (application) `rust` package
cd rust
cargo run
Compiling rust v0.1.0 (/home/user/Documents/rust)
Finished dev [unoptimized + debuginfo] target(s) in 0.37s
Running `target/debug/rust`
Hello, world!
cat ~/.cargo/config
───────┬────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
│ File: /home/user/.cargo/config
───────┼────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
1 │ [target.x86_64-unknown-linux-musl]
2 │ linker = "x86_64-linux-gnu-gcc"
3 │
4 │ [target.x86_64-unknown-linux-gnu]
5 │ linker = "x86_64-linux-gnu-gcc"
───────┴────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
cargo run
Compiling rust v0.1.0 (/home/user/Documents/rust)
Finished dev [unoptimized + debuginfo] target(s) in 0.10s
Running `target/debug/rust`
I love programming.
cargo build --release --target x86_64-unknown-linux-musl
Compiling rust v0.1.0 (/home/user/Documents/rust)
Finished release [optimized] target(s) in 0.31s