Update README.md

README.md

@@ -1,7 +1,23 @@
 # The Rust Programming Language
 
 This is the main source code repository for [Rust]. It contains the compiler,
-standard library, and documentation.
+standard library, and documentation. It is modified to use Enzyme for AutoDiff.
+
+Please configure this fork using the following command:
+
+```
+./configure --enable-llvm-link-shared --enable-llvm-plugins --enable-llvm-enzyme --release-channel=nightly --enable-llvm-assertions --enable-clang --enable-lld --enable-option-checking --enable-ninja --disable-docs
+```
+
+Afterwards you can build rustc using:
+```
+x build --stage 1 library/std   
+```
+
+Afterwards rustc toolchain link will allow you to use it trough cargo (adjust path):
+```
+rustup toolchain link enzyme /home/drehwald/prog/rust/build/x86_64-unknown-linux-gnu/stage1
+```
 
 [Rust]: https://www.rust-lang.org