Thank you very much. I think you mean "apt-cache search dwarf"and "apt-cache show libdwarf-dev" yes, I got what you said and found introduction to "libdwarf-dev" it's helpful, thank you! -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/apitrace/attachments/20150310/8f9d223c/attachment.html>