Use make_build macro instead of just make

https://docs.fedoraproject.org/en-US/packaging-guidelines/#_parallel_make

mod_wsgi.spec

@@ -21,7 +21,7 @@
 
 Name:           mod_wsgi
 Version:        4.6.8
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        A WSGI interface for Python web applications in Apache
 License:        ASL 2.0
 URL:            https://modwsgi.readthedocs.io/
@@ -97,14 +97,14 @@ mkdir py3build/
 cp -R * py3build/ || :
 pushd py3build
 %configure --enable-shared --with-apxs=%{_httpd_apxs} --with-python=python3
-make %{?_smp_mflags}
+%{make_build}
 %py3_build
 popd
 %endif
 
 %if 0%{?with_python2} > 0
 %configure --enable-shared --with-apxs=%{_httpd_apxs} --with-python=python2
-make %{?_smp_mflags}
+%{make_build}
 %py2_build
 %endif
 
@@ -162,6 +162,10 @@ ln -s %{_bindir}/mod_wsgi-express-2 $RPM_BUILD_ROOT%{_bindir}/mod_wsgi-express
 %endif
 
 %changelog
+* Thu Feb 13 2020 Tom Stellard <tstellar@redhat.com> - 4.6.8-3
+- Use make_build macro instead of just make
+- https://docs.fedoraproject.org/en-US/packaging-guidelines/#_parallel_make
+
 * Wed Jan 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 4.6.8-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild