C3

Internal for the C3 project.

Building

• Run cargo clean if upgrading from a previous version of LLVM.
• Build LLVM 4 or 5 and Clang from source (libclang.a is needed, and pre-built packages won't have it).
• Add directory containing llvm-config to your PATH, or set LLVM_CONFIG_PATH env variable poiting to the llvm-config executable file.
• Set LIBCLANG_INCLUDE_PATH pointing to Clang's include directory (<clang install dir>/clang/include/)

Building clang

This will require 20GB of disk space and 16GB of RAM.

• Install cmake, subversion, build-essential, libffi-dev, libncursesw5-dev
• curl -LO http://releases.llvm.org/5.0.0/llvm-5.0.0.src.tar.xz
• tar xf llvm-4.0.1.src.tar.xz
• curl -LO http://releases.llvm.org/5.0.0/cfe-5.0.0.src.tar.xz
• tar xf cfe-5.0.0.src.tar.xz
• mv cfe-5.0.0.src llvm-4.0.1.src/tools/clang
• cd llvm-4.0.1.src
• mkdir build; cd build
• cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX=$HOME/llvm-c3 -DLIBCLANG_BUILD_STATIC=ON -DLLVM_BUILD_LLVM_DYLIB=OFF -DLLVM_TARGETS_TO_BUILD=X86 -DCMAKE_BUILD_TYPE=MinSizeRel -DLLVM_POLLY_BUILD=OFF -DLLVM_BUILD_RUNTIME=OFF -DLLVM_ENABLE_TERMINFO=OFF -DLLVM_ENABLE_LIBEDIT=OFF -DLLVM_ENABLE_ZLIB=OFF -DLLVM_ENABLE_FFI=OFF ..
• make -j8; make install
• Take a nap.
• cp lib/libclang.a "$HOME/llvm-c3/lib/"
• export LIBCLANG_INCLUDE_PATH="$HOME/llvm-c3/tools/clang/include/:$HOME/llvm-c3/include/"
• export LIBCLANG_STATIC_PATH="$HOME/llvm-c3/lib/"
• export LLVM_CONFIG_PATH="$HOME/llvm-c3/bin/llvm-config"