libdwarf not found

[Jiachen Song]

hi,
I get libdwarf.so from source code, and cp it to /usr/lib and /lib
following
http://askubuntu.com/questions/502749/install-libdwarf-so-on-ubuntu
and run ldconfig on my ubuntu12.04

but I got :
--libdwarf not found .Disabling Backtrace support.

can anyone tell me how to correctly install libdwarf or how to let apitrace
see it?

thank you very much!

ps. I tried apt-get install libdwarf  but failed.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/apitrace/attachments/20150309/9d9ed488/attachment.html>