From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
To: Oleg Smolsky <osmolsky@netskope.com>,
Libc-help <libc-help@sourceware.org>
Subject: Re: Q: -fno-omit-frame-pointer
Date: Thu, 1 Apr 2021 11:38:01 -0300 [thread overview]
Message-ID: <b68c5513-21fb-d9f8-cca6-e58718796e2a@linaro.org> (raw)
In-Reply-To: <CAAucFJejMD41G5O3OwONe7cXZCVXwSL8NVOWv2zOPE2L4FCp0A@mail.gmail.com>
On 31/03/2021 18:23, Oleg Smolsky via Libc-help wrote:
> Folks, what is the default for x88-64 builds w.r.t. the frame pointers? (I
> think it's "off"). I couldn't find a configure.ac option to tweak that...
> yet it's easy to force via CFLAGS.
>
> Is glibc known to work with the frame pointers? Does the test suite cover
> whatever kinks come from forcing that via CFLAGS?
>
We use the compiler and cflags default with exception of some specific
objects (and to which I am not it is strictly required, the exception
based mechanism on most architectures are done through libgcc and
dwarf unwind).
At least for i386, we fixed some issues to build with -fno-omit-frame-pointer
(BZ#21029). Afaik gcc 4.6 set to -fomit-frame-pointer as default, but
I am not sure if it is enforced on all architectures.
next prev parent reply other threads:[~2021-04-01 14:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-31 21:23 Oleg Smolsky
2021-04-01 14:38 ` Adhemerval Zanella [this message]
2021-04-07 7:00 ` Linda A. Walsh
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