Check elfutils version, and if it is old don't compile CFI analysis code. This
allows to compile perf with old elfutils.
Signed-off-by: NMasami Hiramatsu <mhiramat@redhat.com>
Tested-by: NStephane Eranian <eranian@google.com>
Reported-by: NRobert Richter <robert.richter@amd.com>
Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <20100510171207.26029.97604.stgit@localhost6.localdomain6>
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>