OS_UPPERCASE=`uname -s | tr '[:lower:]' '[:upper:]' | sed 's/_.*$//'`
OS_LOWERCASE=`uname -s | tr '[:upper:]' '[:lower:]' | sed 's/_.*$//'`

package_name="Python3"
installed_dir=${OS_LOWERCASE}-64bit

full_installed_dir="$PWD/$installed_dir"

if test ! -d "$full_installed_dir" ; then
    echo "" >&2
    echo "In seting up $package_name, did not find directory:" >&2
    echo "  $full_installed_dir" >&2    
    echo "" >&2
    echo "Have you run ./PREPARE-${OS_ALLCASE}.sh?" >&2    
    echo "Exiting..." >&2    
    echo "" >&2
    return
fi

PYTHON3_HOME="$full_installed_dir"             ; export PYTHON3_HOME
PATH="$PYTHON3_HOME/bin:$PATH"                 ; export PATH

echo + "Set PYTHON3_HOME and updated PATH"