if test "x$PYTHON_LIB" '!=' "x" -o "x$PYTHON_INCLUDES" '!=' "x";then
echo "Set both PYTHON_LIB and PYTHON_INCLUDES, or none at all"
fi
if test "x$PYTHON_LIB" '!=' "x" -o "x$PYTHON_INCLUDES" '!=' "x";then
echo "Set both PYTHON_LIB and PYTHON_INCLUDES, or none at all"
fi