Re: [gentoo-dev] New 17.0 release profiles

[Michał Górny]

On śro, 2017-06-07 at 23:05 +0100, Sergei Trofimovich wrote:
> On Wed, 07 Jun 2017 22:44:31 +0200
> "Andreas K. Huettel" <dilfridge@g.o> wrote:
>
> > 2) Switch GCC from default-non-PIE to default-PIE executables.
>
> Yay \o/. It's a major change though. Will qa@ write us some docs
> on the topic? Landing page:
>     https://wiki.gentoo.org/wiki/Project:Quality_Assurance#Documentation
>
> Currently we have scarce mention of PIC-related problems:
>     https://wiki.gentoo.org/wiki/Hardened/Position_Independent_Code_internals
>     https://wiki.gentoo.org/wiki/Project:AMD64/Fixing_-fPIC_Errors_Guide
>
> We will have a bit more more of those problems. Recent example:
>     https://bugs.gentoo.org/show_bug.cgi?id=618366
> I'm personally interested in how to filter out '-pie' in dosemu.
> What is the canonical way to detect '-pie' / '-no-pie' support
> in toolchain and flip it?
>
> A quick poll:
>
> How about other toolchains?
>
> A few examples that will have (perhaps minor) troubles doing that:
>
> - sys-devel/clang will need to be defaulting to pie. llvm@
>   llvm is especially touchy as otherwise it's easy to have static library mix.
>

I think it would also be reasonable to have clang default to the same
C++ standard for better interoperability.

Sadly, unless I'm mistaken changing the defaults for both will require
patching the code.

-- 
Best regards,
Michał Górny