rm -rf 'build' 'out' 'inst'
mkdir 'build' 'out' 'inst' || exit 1

if [ ! -f "${SRC}" ]; then
    mkdir 'src' >/dev/null 2>/dev/null
    
    if [ ! -d 'buildsrc' ]; then
	rm -f "${SRC}.tmp"
	wget -O "${SRC}.tmp" "${SRCURL}" || exit 1
	download "${SRCURL}" "${SRC}" - || exit 1
	mv "${SRC}.tmp" "${SRC}"
    fi
fi

(
    cd 'build' || exit 1
    
    if [ ! -d '../buildsrc' ]; then