| <!-- | |
| Copyright (C) Daniel Stenberg, <[email protected]>, et al. | |
| SPDX-License-Identifier: curl | |
| --> | |
| # Rustls | |
| [Rustls is a TLS backend written in Rust](https://docs.rs/rustls/). Curl can | |
| be built to use it as an alternative to OpenSSL or other TLS backends. We use | |
| the [rustls-ffi C bindings](https://github.com/rustls/rustls-ffi/). This | |
| version of curl depends on version v0.14.0 of rustls-ffi. | |
| # Building with Rustls | |
| First, [install Rust](https://rustup.rs/). | |
| Next, check out, build, and install the appropriate version of rustls-ffi: | |
| % git clone https://github.com/rustls/rustls-ffi -b v0.14.0 | |
| % cd rustls-ffi | |
| % make | |
| % make DESTDIR=${HOME}/rustls-ffi-built/ install | |
| Now configure and build curl with Rustls: | |
| % git clone https://github.com/curl/curl | |
| % cd curl | |
| % autoreconf -fi | |
| % ./configure --with-rustls=${HOME}/rustls-ffi-built | |
| % make | |
| See the [rustls-ffi README] for more information on cryptography providers and | |
| their build/platform requirements. | |
| [rustls-ffi README]: https://github.com/rustls/rustls-ffi/blob/main/README.md#cryptography-provide | |