Fix build on RHEL/CentOS 6

bacula.spec

@@ -3,7 +3,7 @@
 
 Name:               bacula
 Version:            9.0.7
-Release:            6%{?dist}
+Release:            7%{?dist}
 Summary:            Cross platform network backup for Linux, Unix, Mac and Windows
 # See LICENSE for details
 License:            AGPLv3 with exceptions
@@ -393,9 +393,9 @@ convert %{SOURCE19} bacula-tray-monitor.png
 # Nagios plugin
 install -p -m 755 -D examples/nagios/check_bacula/.libs/check_bacula %{buildroot}%{_libdir}/nagios/plugins/check_bacula
 
-# Remove catalogue backend symlinks
+# This will be managed through alternatives, as it requires the name to NOT
+# change between upgrades, so the versioned library name can not be used.
 rm -f %{buildroot}%{_libdir}/libbaccats.so
-rm -f %{buildroot}%{_libdir}/libbaccats-%{version}.so
 
 # Bat
 install -p -m 644 -D src/qt-console/images/bat_icon.png %{buildroot}%{_datadir}/pixmaps/bat_icon.png
@@ -580,6 +580,9 @@ fi
 %files libs-sql
 # On Fedora 28 this gets recreated automatically even if the library is
 # deleted in the install section.
+# On EPEL 6 this is required until RPM assembly time or an error is given due
+# to the missing library.
+# So: leave the library in place until the very end and just exclude it.
 %exclude %{_libdir}/libbaccats-%{version}.so
 %{_libdir}/libbaccats-mysql-%{version}.so
 %{_libdir}/libbaccats-mysql.so
@@ -731,6 +734,9 @@ fi
 %{_libdir}/nagios/plugins/check_bacula
 
 %changelog
+* Fri Jun 15 2018 Simone Caronni <negativo17@gmail.com> - 9.0.7-7
+- Fix build on RHEL/CentOS 6.
+
 * Wed Jun 13 2018 Simone Caronni <negativo17@gmail.com> - 9.0.7-6
 - Fix typo.