#!/bin/bash


# #################################################
# helper functions
# #################################################
function display_help()
{
    echo "rocRAND build & installation helper script"
    echo "./install [-h|--help] "
    echo "    [-h|--help] prints this help message"
    echo "    [-i|--install] install after build"
    echo "    [-p|--package] build package"
    echo "    [-r]--relocatable] create a package to support relocatable ROCm"
    #Not implemented yet
    #    echo "    [-d|--dependencies] install build dependencies"
    echo "    [-c|--clients] build library clients too (combines with -i & -d)"
    echo "    [-g|--debug] -DCMAKE_BUILD_TYPE=Debug (default is =Release)"
    echo "    [--hip-clang] build library for amdgpu backend using hip-clang"
}


# #################################################
# global variables
# #################################################
install_package=false
build_package=false
build_clients=false
build_release=true
run_tests=false
build_hip_clang=false
rocm_path=/opt/rocm
build_relocatable=false

# #################################################
# Parameter parsing
# #################################################

# check if we have a modern version of getopt that can handle whitespace and long parameters
getopt -T
if [[ $? -eq 4 ]]; then
    GETOPT_PARSE=$(getopt --name "${0}" --longoptions help,install,clients,debug,hip-clang,test,package,relocatable --options hicdtpr -- "$@")
else
    echo "Need a new version of getopt"
    exit 1
fi

if [[ $? -ne 0 ]]; then
    echo "getopt invocation failed; could not parse the command line";
    exit 1
fi

eval set -- "${GETOPT_PARSE}"

check_exit_code( )
{
    if (( $1 != 0 )); then
	exit $1
    fi
}

while true; do
    case "${1}" in
	-h|--help)
	    display_help
	    exit 0
	    ;;
	-i|--install)
	    install_package=true
	    shift ;;
	-p|--package)
	    build_package=true
	    shift ;;
        -r|--relocatable)
            build_relocatable=true
            shift ;;
	-c|--clients)
	    build_clients=true
	    shift ;;
	-g|--debug)
	    build_release=false
	    shift ;;
	-t|--test)
	    run_tests=true
	    shift ;;
    --hip-clang)
        build_hip_clang=true
        shift ;;
	--) shift ; break ;;
	*)  echo "Unexpected command line parameter received; aborting";
	    exit 1
	    ;;
    esac
    done

if [[ "${build_relocatable}" == true ]]; then
    if ! [ -z ${ROCM_PATH+x} ]; then
        rocm_path=${ROCM_PATH}
    fi

    rocm_rpath=" -Wl,--enable-new-dtags -Wl,--rpath,/opt/rocm/lib:/opt/rocm/lib64"
    if ! [ -z ${ROCM_RPATH+x} ]; then
        rocm_rpath=" -Wl,--enable-new-dtags -Wl,--rpath,${ROCM_RPATH}"
    fi
fi

# Instal the pre-commit hook
#bash .githooks/install


# Create and go to the build directory.
mkdir -p build; cd build

if ($build_release); then
    mkdir -p release; cd release
else
    mkdir -p debug; cd debug
fi

# Configure hipCUB, setup options for your system.
# Build options:
#   BUILD_TEST - on by default,
#   BUILD_BENCHMARK - off by default.
#
# ! IMPORTANT !
# On ROCm platform set C++ compiler to HIPCC. You can do it by adding 'CXX=<path-to-hcc>'
# before 'cmake' or setting cmake option 'CMAKE_CXX_COMPILER' to path to the HIPCC compiler.
#

compiler="hipcc"

if [ -e /etc/redhat-release ] ; then
    cmake_executable="cmake3"
else
    cmake_executable="cmake"
fi

if($build_clients); then
    clients=" -DBUILD_TEST=ON -DBUILD_BENCHMARK=ON "
fi
if [[ "${build_relocatable}" == true ]]; then
    CXX=${rocm_path}/bin/$compiler ${cmake_executable}  -DCMAKE_INSTALL_PREFIX="${rocm_path}" \
    -DBUILD_TEST=ON -DBUILD_BENCHMARK=ON -DBUILD_CRUSH_TEST=ON -DDEPENDENCIES_FORCE_DOWNLOAD=ON \
    -DCMAKE_PREFIX_PATH="${rocm_path} ${rocm_path}/hcc ${rocm_path}/hip" \
    -DCMAKE_SHARED_LINKER_FLAGS="${rocm_rpath}" \
    -DROCM_DISABLE_LDCONFIG=ON \
    -DCMAKE_MODULE_PATH="${rocm_path}/hip/cmake" \
    ../../. # or cmake-gui ../.
else
    CXX=${rocm_path}/bin/$compiler ${cmake_executable} ${clients} ../../. # or cmake-gui ../.
fi
check_exit_code "$?"

# Build
make -j$(nproc)
check_exit_code "$?"

if ($run_tests); then
# Optionally, run tests if they're enabled.
ctest --output-on-failure
fi

if ($install_package); then
    # Install
    make install
    check_exit_code "$?"    
fi

if ($build_package); then
    # Package
    make package -j$(nproc)
    check_exit_code "$?"
fi