README: note how to enable debugging for rustc

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Lee Bousfield 2017-07-03 22:04:57 -04:00
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@ -40,8 +40,9 @@ Read ["Installation"] from [The Book].
> ***Note:*** Install locations can be adjusted by copying the config file
> from `./src/bootstrap/config.toml.example` to `./config.toml`, and
> adjusting the `prefix` option under `[install]`. Various other options are
> also supported, and are documented in the config file.
> adjusting the `prefix` option under `[install]`. Various other options, such
> as enabling debug information, are also supported, and are documented in
> the config file.
When complete, `sudo ./x.py install` will place several programs into
`/usr/local/bin`: `rustc`, the Rust compiler, and `rustdoc`, the