From: "H.J. Lu" <hjl.tools@gmail.com>
To: Siddhesh Poyarekar <siddhesh@gotplt.org>
Cc: Adhemerval Zanella <adhemerval.zanella@linaro.org>,
Florian Weimer <fweimer@redhat.com>,
Siddhesh Poyarekar <siddhesh@sourceware.org>,
GNU C Library <libc-alpha@sourceware.org>
Subject: Re: [PATCH] New option --enable-pie-programs
Date: Thu, 18 Nov 2021 09:58:38 -0800 [thread overview]
Message-ID: <CAMe9rOpcrKfa6XPY7eyoZJEFExLWhvph-bM1-Oq3f1FmSW=bAw@mail.gmail.com> (raw)
In-Reply-To: <838b41ee-3cbc-6ae7-0798-d2659abcea87@gotplt.org>
On Thu, Nov 18, 2021 at 9:54 AM Siddhesh Poyarekar <siddhesh@gotplt.org> wrote:
>
> On 11/18/21 22:26, H.J. Lu wrote:
> > On Thu, Nov 18, 2021 at 8:49 AM Siddhesh Poyarekar <siddhesh@gotplt.org> wrote:
> >>
> >> On 11/18/21 22:14, H.J. Lu wrote:
> >>> --enable-pie means --disable-pie which looks odd since PIE isn't really
> >>> disabled, just isn't the default. But I don't feel it very strongly. As for
> >>
> >> Ahh then the option you suggested is actually different, in that
> >> --enable-default-pie=no doesn't actually disable PIE for default-PIE
> >> toolchains. That is, it is similar to the --enable-pie-programs option
> >> I implemented with the added functionality of transparently enabling
> >> static-pie. Have I understood that correctly?
> >>
> >
> > I am not sure. --enable-default-pie and --disable-default-pie should
> > be independent of compilers, except for static PIE. If compiler supports
> > static PIE, --enable-default-pie implies --enable-static-pie.
> >
>
> How do you see --disable-default-pie behaving with a compiler that
> produces PIE by default? That is, in case where
> libc_cv_cc_default_pie=yes? Should it add -fno-pie or leave it as is?
>
It should add -fno-pie by default when building programs.
--
H.J.
next prev parent reply other threads:[~2021-11-18 17:59 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-16 13:52 Siddhesh Poyarekar
2021-11-16 13:58 ` Florian Weimer
2021-11-16 15:17 ` Siddhesh Poyarekar
2021-11-17 8:39 ` Florian Weimer
2021-11-17 8:50 ` Siddhesh Poyarekar
2021-11-17 9:10 ` Florian Weimer
2021-11-17 10:04 ` Siddhesh Poyarekar
2021-11-18 9:24 ` Siddhesh Poyarekar
2021-11-18 12:42 ` H.J. Lu
2021-11-18 12:49 ` Adhemerval Zanella
2021-11-18 13:26 ` Siddhesh Poyarekar
2021-11-18 13:41 ` H.J. Lu
2021-11-18 16:36 ` Siddhesh Poyarekar
2021-11-18 16:44 ` H.J. Lu
2021-11-18 16:49 ` Siddhesh Poyarekar
2021-11-18 16:56 ` H.J. Lu
2021-11-18 17:54 ` Siddhesh Poyarekar
2021-11-18 17:58 ` H.J. Lu [this message]
2021-11-18 18:09 ` Siddhesh Poyarekar
2021-11-18 18:18 ` H.J. Lu
2021-11-22 23:40 ` Fangrui Song
2021-11-24 1:04 ` Fāng-ruì Sòng
2021-11-24 1:27 ` Siddhesh Poyarekar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAMe9rOpcrKfa6XPY7eyoZJEFExLWhvph-bM1-Oq3f1FmSW=bAw@mail.gmail.com' \
--to=hjl.tools@gmail.com \
--cc=adhemerval.zanella@linaro.org \
--cc=fweimer@redhat.com \
--cc=libc-alpha@sourceware.org \
--cc=siddhesh@gotplt.org \
--cc=siddhesh@sourceware.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).