From cb0e8b0e98b7e883124b50f2f5acc6e3a4bfff49 Mon Sep 17 00:00:00 2001
From: "Mayeul@Zama" <mayeul.debellabre@zama.ai>
Date: Tue, 28 Sep 2021 11:58:02 +0200
Subject: [PATCH] doc(compiler): update the instructions to build and test the
 compiler in the README

---
 compiler/README.md | 33 +++++++++++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

diff --git a/compiler/README.md b/compiler/README.md
index 4e1ecfa05..53765a834 100644
--- a/compiler/README.md
+++ b/compiler/README.md
@@ -1,15 +1,44 @@
 # Building the compiler
 
+Install MLIR following https://mlir.llvm.org/getting_started/
+Use commit c2415d67a564
+
+Install pybind11:
+
+```sh
+pip install pybind11
+```
+
+Build concrete library:
+
+```sh
+git clone https://github.com/zama-ai/concrete
+cd concrete
+git checkout feature/core_c_api
+cd concrete-ffi
+RUSTFLAGS="-C target-cpu=native" cargo build --release 
+```
+
 Generate the compiler build system, in the `build` directory
 
 ```sh
-cmake -B build . -DLLVM_DIR=$LLVM_PROJECT/build/lib/cmake/llvm    -DMLIR_DIR=$LLVM_PROJECT/build/lib/cmake/mlir
+export LLVM_PROJECT="PATH_TO_LLVM_PROJECT"
+export CONCRETE_PROJECT="PATH_TO_CONCRETE_PROJECT"
+make build
 ```
 
 Build the compiler
 
 ```sh
-make -C build/ zamacompiler
+make zamacompiler
+```
+
+Test the compiler
+
+```sh
+#TODO: let cmake set this PATH
+export LD_LIBRARY_PATH="path_to_homomorphizer/compiler/build/lib/Runtime/"
+make test
 ```
 
 Run the compiler