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src/doc/rustc/src/targets/custom.md
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@ -5,13 +5,13 @@ If you'd like to build for a target that is not yet supported by `rustc`, you ca
are JSON. To see the JSON for the host target, you can run:
```bash
$ rustc +nightly -Z unstable-options --print target-spec-json
rustc +nightly -Z unstable-options --print target-spec-json
```
To see it for a different target, add the `--target` flag:
```bash
$ rustc +nightly -Z unstable-options --target=wasm32-unknown-unknown --print target-spec-json
rustc +nightly -Z unstable-options --target=wasm32-unknown-unknown --print target-spec-json
```
To use a custom target, see the (unstable) [`build-std` feature](https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#build-std) of `cargo`.