On 22/02/2016 18:29, Stefan Hajnoczi wrote: >>> + "current user.\n" + >>> .format(PATH_DEBUGFS_TRACING)) > According to ./configure the minimum Python version is 2.4. > > str.format() is a Python 2.6+ feature.
This was changed in September 2015: commit fec21036ff516d20721abc01ae7be99ae5bb0c7b Author: Markus Armbruster <arm...@redhat.com> Date: Fri Sep 4 21:53:03 2015 +0200 configure: Require Python 2.6 RHEL-6 and SLES-11 provide Python 2.6. It'll also work on OS X back to 10.6. Signed-off-by: Markus Armbruster <arm...@redhat.com> Message-Id: <1441396383-17304-1-git-send-email-arm...@redhat.com> Reviewed-by: Peter Maydell <peter.mayd...@linaro.org> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> Are you looking at an older version of the configure script? Paolo