%build
%if %{with python2}
-CC="%{__cc}" \
-CFLAGS="%{rpmcflags}" \
-%{__python} setup.py build \
+%py_build \
--build-base build-2
%endif
%if %{with python3}
-CC="%{__cc}" \
-CFLAGS="%{rpmcflags}" \
-%{__python3} setup.py build \
+%py3_build \
--build-base build-3
%endif