On Fri, 2017-04-14 at 20:17 +0900, Tetsuo Handa wrote:
Mark Wielaard wrote:
On Wed, 2017-04-12 at 23:24 +0900, Tetsuo Handa wrote:
Commit 7e2cd9f56293f697 ("Squashed commit of the eBPF backend for stap")
caused following build error when trying to build on CentOS 7.
Older GCC versions seemed to have some trouble with initialization of
anonymous struct fields in unions. Older elfutils didn't provide some
strtab manipulation functions. And some older kernel headers didn't
define all needed constants.
I pushed the following commits to hopefully fix the compilation (I
haven't tested running the ebpf backend yet):
Could you check if that helps in your case (my setup isn't really a pure
CentOS7 one).
Thank you. But linux/bpf.h check seems to be missing.
Aha. Seems I have a slightly older version than Richard tested with, but
you don't have it at all. Could you try to update your git sources with
this commit:
commit 7ca1ffe6e431e4818a9a479935d75a428d2aaf57
Author: Mark Wielaard <mark@klomp.org>
Date: Fri Apr 14 13:52:39 2017 +0200
configure: Check for linux/bpf.h header.
Don't build bpf backend support if there is no bpf.h header.
Skip translate_bpf_pass if there is no bpf support.
Regenerate configure and Makefile.in.
It should completely skip building the bpf backend in your case.