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C-style casts between function pointers result in an error using g++ 8.3.0. This patch introduces a workaround based on `reinterpret_cast`, in which the original function pointer is first cast into an unsigned integer of sufficient size and then cast into the target function pointer type. TODO: Check that this is actually valid C++ with defined behavior on all implementations / platforms.
Building the compiler
Install MLIR following https://mlir.llvm.org/getting_started/ Use commit c2415d67a564
Install pybind11:
pip install pybind11
Build concrete library:
git clone https://github.com/zama-ai/concrete_internal
cd concrete_internal
git checkout engine_c_api
cd concrete-ffi
RUSTFLAGS="-C target-cpu=native" cargo build --release
Generate the compiler build system, in the build directory
export LLVM_PROJECT="PATH_TO_LLVM_PROJECT"
export CONCRETE_PROJECT="PATH_TO_CONCRETE_INTERNAL_PROJECT"
make build-initialized
Build the compiler
make concretecompiler
Test the compiler
#TODO: let cmake set this PATH
export LD_LIBRARY_PATH="path_to_concrete-compiler/compiler/build/lib/Runtime/"
make test
Run the compiler
./build/src/concretecompiler