configure

#!/bin/sh
set -e

BUILD_LIB=1
BUILD_TESTS=0
BUILD_FAKE=0
BUILD_EXAMPLES=0
BUILD_USER_CODES=0

if [ ! -e /dev/nvidia0 ]; then
    BUILD_FAKE=1
    echo "CUDA NOT Found, using BUILD_FAKE=$BUILD_FAKE"
fi

parse_args() {
    for i in "$@"; do
        case $i in
        --prefix=*)
            PREFIX="${i#*=}"
            ;;
        --examples)
            BUILD_EXAMPLES=1
            ;;
        --tests)
            BUILD_TESTS=1
            ;;
        --user-code)
            BUILD_USER_CODE=1
            ;;
        --fake-cuda)
            BUILD_FAKE=1
            ;;
        *)
            echo "unknown argument $i"
            exit 1
            ;;
        esac
    done
}

parse_args $@

cmake_flag() {
    echo "-D$1=$2"
}

cmake_flags() {
    if [ ! -z "$PREFIX" ]; then
        cmake_flag CMAKE_INSTALL_PREFIX $PREFIX
    fi
    cmake_flag CMAKE_RUNTIME_OUTPUT_DIRECTORY $PWD/bin
    cmake_flag BUILD_TESTS $BUILD_TESTS
    cmake_flag BUILD_FAKE $BUILD_FAKE
    cmake_flag BUILD_EXAMPLES $BUILD_EXAMPLES
    cmake_flag BUILD_LIB $BUILD_LIB
    cmake_flag BUILD_USER_CODES $BUILD_USER_CODES
}

cd $(dirname $0)
W=$PWD

build='.build'

gen_make() {
    echo "build:"
    echo "\t\$(MAKE) -C $build"
    echo "install:"
    echo "\t\$(MAKE) -C $build install"
    echo "test:"
    echo "\t\$(MAKE) -C $build test"
}

mkdir -p $build
cd $build
cmake $W $(cmake_flags)

gen_make >$W/Makefile