Avoid python3 module / package depending on python2 (#1609491)

mod_wsgi.spec

@@ -23,7 +23,7 @@
 
 Name:           mod_wsgi
 Version:        4.6.4
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        A WSGI interface for Python web applications in Apache
 Group:          System Environment/Libraries
 License:        ASL 2.0
@@ -92,22 +92,28 @@ make -C docs html SPHINXBUILD=%{sphinxbin}
 export LDFLAGS="$RPM_LD_FLAGS -L%{_libdir}"
 export CFLAGS="$RPM_OPT_FLAGS -fno-strict-aliasing"
 
+%if 0%{?with_python3} > 0
+mkdir py3build/
+# this always produces an error (because of trying to copy py3build
+# into itself) but we don't mind, so || :
+cp -R * py3build/ || :
+pushd py3build
+%configure --enable-shared --with-apxs=%{_httpd_apxs} --with-python=python3
+make %{?_smp_mflags}
+%py3_build
+popd
+%endif
+
 %if 0%{?with_python2} > 0
 %configure --enable-shared --with-apxs=%{_httpd_apxs} --with-python=python2
 make %{?_smp_mflags}
 %py2_build
 %endif
 
-%if 0%{?with_python3} > 0
-%configure --enable-shared --with-apxs=%{_httpd_apxs} --with-python=python3
-make %{?_smp_mflags}
-%py3_build
-%endif
-
 %install
 # first install python3 variant and rename the so file
 %if 0%{?with_python3} > 0
-
+pushd py3build
 make install DESTDIR=$RPM_BUILD_ROOT LIBEXECDIR=%{_httpd_moddir}
 mv  $RPM_BUILD_ROOT%{_httpd_moddir}/mod_wsgi{,_python3}.so
 
@@ -117,6 +123,7 @@ install -p -m 644 %{SOURCE2} $RPM_BUILD_ROOT%{_httpd_modconfdir}/10-wsgi-python3
 
 %py3_install
 mv $RPM_BUILD_ROOT%{_bindir}/mod_wsgi-express{,-3}
+popd
 
 %endif
 
@@ -157,6 +164,10 @@ ln -s %{_bindir}/mod_wsgi-express-2 $RPM_BUILD_ROOT%{_bindir}/mod_wsgi-express
 %endif
 
 %changelog
+* Tue Jul 31 2018 Adam Williamson <awilliam@redhat.com> - 4.6.4-2
+- Run Python 3 build in a subdir, so module isn't linked against both
+  libpython 2 and libpython 3 (rhbz#1609491)
+
 * Fri Jul 20 2018 Matthias Runge <mrunge@redhat.com> - 4.6.4-1
 - update to 4.6.4 (rhbz#1560329)