Re: F37 proposal: Add -fno-omit-frame-pointer to default compilation flags (System-Wide Change proposal)

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Michael Catanzaro <mcatanzaro@xxxxxxxxx> writes:

> I can point you to documentation for sysprof:
> https://gitlab.gnome.org/GNOME/sysprof#debugging-symbols
> which says that every library should be built with
> -fno-omit-frame-pointer.

Given that sysprof is a userspace program, it's not in a giant rush, so
it should be capable of doing full dwarf unwinding.  The fedora copy of
sysprof is not linked against libunwind, or more modern libraries like
elfutils, but only against glibc's little emergency backtrace()
function.  If sysprof learned to speak elfutils (like the eu-stack
program demonstrates for unwinding), it could also benefit from
debuginfod dwarf auto-downloading as needed.

- FChE
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