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Re: NO_UNWIND error with libdw on Powerpc
- From: Sukadev Bhattiprolu <sukadev at linux dot vnet dot ibm dot com>
- To: elfutils-devel at lists dot fedorahosted dot org
- Date: Wed, 12 Mar 2014 20:52:06 -0700
- Subject: Re: NO_UNWIND error with libdw on Powerpc
Sukadev Bhattiprolu [firstname.lastname@example.org] wrote:
| Mark Wielaard [email@example.com] wrote:
| | On Tue, 2014-03-11 at 14:20 -0700, Sukadev Bhattiprolu wrote:
| | > I am running Fedora 20 and built the libdw library from sources
| | > with following elfutils.git commit as HEAD:
| | >
| | > commit 48827ec6cb2169bad15baf7702f86c4bf2847beb
| | > Author: Mark Wielaard <firstname.lastname@example.org>
| | > Date: Wed Feb 26 17:17:07 2014 +0100
| | BTW. Fedora 20 now has elfutils-0.158-1.fc20 which should be enough for
| | what you are doing (unless there are bug fixed in git that you need).
| I don't need any specific bug fix from git but 'yum update' doesn't
| find the update which is clearly in:
| but thats a separate issue.
The perf binary I built was referring to /lib64/libdw.so.1, from
elfutils-0.157, rather than /opt/libdw/lib/libdw.so.1 from my build.
I got a workaround for the 'yum update' problem. With elfutils-0.158
the eu-stack and perf seem to work better.
BTW, I did not find 'eu-stack' in elfutils-0.157; I got the NO_UNWIND
error with '/opt/libdw/bin/stack -p $$' and that binary was also referring
to libdw.so.1 from 0.157.