Disable parallel build for now to avoid build failures

qgis.spec

@@ -16,7 +16,7 @@
 
 Name:           qgis
 Version:        2.18.10
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        A user friendly Open Source Geographic Information System
 Group:          Applications/Engineering
 
@@ -243,7 +243,10 @@ gzip ChangeLog
       # Doesn't build, as of 2.10, known issue
       #-D WITH_GLOBE:BOOL=TRUE
 
-make %{?_smp_mflags}
+# Parallel build appears to occasionally result in build failures
+# (UI form headers generated too late)
+# TODO: Re-check with QGIS-3.0
+make
 
 
 %install
@@ -406,6 +409,9 @@ update-mime-database %{?fedora:-n} %{_datadir}/mime &> /dev/null || :
 
 
 %changelog
+* Mon Jun 26 2017 Sandro Mani <manisandro@gmail.com> - 2.18.10-2
+- Disable parallel build for now to avoid build failures
+
 * Sat Jun 24 2017 Volker Froehlich <volker27@gmx.at> - 2.18.10-1
 - New upstream release