-<a href = "https://www.rust-lang.org/">
+<a href = "https://www.rust-lang.org/">
<img width = "90%" height = "auto" src = "https://img.shields.io/badge/Rust-Programming%20Language-black?style=flat&logo=rust" alt = "The Rust Programming Language">
</a>
This is the main source code repository for [Rust]. It contains the compiler,
-standard library, and documentation.
+standard library, and documentation.
[Rust]: https://www.rust-lang.org
section.**
The Rust build system uses a Python script called `x.py` to build the compiler,
-which manages the bootstrapping process. More information about it can be found
+which manages the bootstrapping process. More information about it can be found
by running `./x.py --help` or reading the [rustc dev guide][rustcguidebuild].
[gettingstarted]: https://rustc-dev-guide.rust-lang.org/getting-started.html
> python x.py build
```
-### Building rustc with older host toolchains
-It is still possible to build Rust with the older toolchain versions listed below, but only if the
-LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN option is set to true in the config.toml file.
-
-* Clang 3.1
-* Apple Clang 3.1
-* GCC 4.8
-* Visual Studio 2015 (Update 3)
-
-Toolchain versions older than what is listed above cannot be used to build rustc.
-
#### Specifying an ABI
Each specific ABI can also be used from either environment (for example, using