* Ingo Molnar <mingo@xxxxxxxxxx> wrote:
* David Ahern <dsahern@xxxxxxxxx> wrote:
On 9/12/13 6:08 AM, Ingo Molnar wrote:
btw., I tried to build perf on a really old distro that has no timerfd.h,
Right. I hit that last week or so with RHEL5 as a build server.
timerfd was introduced before perf so any system with perf capability
will also have timerfd. So the problem is strictly building perf on an
older system. [...]
I'm booting new kernels on an old system and I'm building it there.
So it's new kernel, new perf source and binary, old userspace.
Btw., this build failure is still there today: