Build the Intel or Codeplay LLVM branches

build.sh

#! /bin/bash -e

CUDA_BASE=/usr/local/cuda
SYCL_BASE=$PWD
INSTALL_PATH=/opt/llvm

mkdir -p $SYCL_BASE/llvm
cd $SYCL_BASE/llvm

if ! [ -d .git ]; then
  # create a local git repository with remotes for the LLVM, Intel and Codeplay repositories
  git init
  git remote add -f llvm git@github.com:llvm/llvm-project.git
  git branch -t master llvm/master
  git remote add -f intel git@github.com:intel/llvm.git
  git branch -t sycl intel/sycl
  git remote add -f codeplay git@github.com:codeplaysoftware/sycl-for-cuda.git
  git branch -t cuda codeplay/cuda
  git branch -t cuda-dev codeplay/cuda-dev
else
  # update all remotes
  git fetch --all
fi

# check out a specific branch, or use the current one
if [ "$1" ]; then
  BRANCH=$1
  echo "Building branch $BRANCH"
  git checkout $BRANCH
else
  BRANCH=$(git rev-parse --abbrev-ref HEAD)
  echo "Building current branch $BRANCH"
fi

# check out a specific commit, or use the HEAD of the branch
if [ "$2" ]; then
  HASH=$2
  git reset -hard $HASH
else
  git pull
  #HASH=$(git log -n1 --pretty='format:%h')
  HASH=$(git rev-parse --short HEAD)
fi

BUILD=build-$BRANCH-$HASH
BUILD_DIR=$SYCL_BASE/$BUILD
BUILD_LOG=$SYCL_BASE/$BUILD.log

rm -rf $BUILD_DIR
mkdir $BUILD_DIR
cd $BUILD_DIR

echo "Starting build, see $BUILD_LOG for details"
echo "Running cmake ..."

# broken/incompatible with SYCL_BUILD_PI_CUDA
# -DBUILD_SHARED_LIBS=ON \

cmake $SYCL_BASE/llvm/llvm \
  -DCMAKE_BUILD_TYPE=Release \
  -DCMAKE_INSTALL_PREFIX=$INSTALL_PATH/$BRANCH/$HASH \
  -DLLVM_TARGETS_TO_BUILD="X86;PowerPC;AArch64;NVPTX" \
  -DLLVM_EXTERNAL_PROJECTS="llvm-spirv;sycl;opencl-aot" \
  -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra;compiler-rt;lld;openmp;llvm-spirv;sycl;opencl-aot;libclc" \
  -DLLVM_EXTERNAL_SYCL_SOURCE_DIR=$SYCL_BASE/llvm/sycl \
  -DLLVM_EXTERNAL_LLVM_SPIRV_SOURCE_DIR=$SYCL_BASE/llvm/llvm-spirv \
  -DLLVM_ENABLE_EH=ON \
  -DLLVM_ENABLE_PIC=ON \
  -DLLVM_ENABLE_RTTI=ON \
  -DLLVM_LIBDIR_SUFFIX=64 \
  -DBUILD_SHARED_LIBS=OFF \
  -DSYCL_BUILD_PI_CUDA=ON \
  -DLIBCLC_TARGETS_TO_BUILD="nvptx64--;nvptx64--nvidiacl" \
  -DCUDA_TOOLKIT_ROOT_DIR=$CUDA_BASE \
&> $BUILD_LOG

echo "Running make sycl-toolchain ..."

# revisit deploy-sycl-toolchain once official instructions are available

if make -j`nproc` sycl-toolchain opencl-aot &>> $BUILD_LOG; then
  echo "Build at $BUILD_DIR successful."
else
  echo "Build at $BUILD_DIR failed:"
  tail $BUILD_LOG
  exit 1
fi

cd $SYCL_BASE
# create symlinks
rm -f build-$BRANCH build
ln -s $BUILD build-$BRANCH
ln -s $BUILD build