  export CC=gcc
  export CXX=g++

  cd $SRC/$isim-$surum.src

  mkdir build
  cd build

  cmake -DLLVM_ENABLE_CXX1Y=1 \
    -DLLVM_INCLUDE_EXAMPLES=0 \
    -DLLVM_INCLUDE_TESTS=0 \
    -DLLVM_ENABLE_OCAMLDOC=0 \
    -DLLVM_TARGETS_TO_BUILD='X86;AMDGPU;BPF' \
    -DLLVM_BUILD_LLVM_DYLIB=1 \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_INSTALL_PREFIX=/usr ..

  MAKEFLAGS="$MAKEFLAGS" make