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Date:      Thu, 14 Jun 2012 22:39:56 -0400
From:      Richard Yao <ryao@gentoo.org>
To:        Alexander Kabaev <kabaev@gmail.com>
Cc:        "gentoo-bsd@lists.gentoo.org" <gentoo-bsd@lists.gentoo.org>, "hackers@FreeBSD.org" <hackers@FreeBSD.org>
Subject:   Re: Import crt{begin,end}.S from NetBSD
Message-ID:  <4FDAA07C.3030509@gentoo.org>
In-Reply-To: <20120614222432.24e52fee@kan.dyndns.org>
References:  <4FDA3364.2020102@gentoo.org> <2073f978e4954a989754752f4da71f9a@HUBCAS2.cs.stonybrook.edu> <4FDA9732.9020804@gentoo.org> <20120614222432.24e52fee@kan.dyndns.org>

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On 06/14/12 22:24, Alexander Kabaev wrote:
> On Thu, 14 Jun 2012 22:00:18 -0400 Richard Yao <ryao@gentoo.org>
> wrote:
> 
> 
>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
> 
>> On 06/14/12 20:51, Alexander Kabaev wrote:
>>> On Thu, 14 Jun 2012 14:54:28 -0400 Richard Yao
>>> <ryao@gentoo.org> wrote:
>>> 
>>>> NetBSD has replacements for GCC's crt{begin,end}.S:
>>>> 
>>>> http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/csu/arch/?only_with_tag=MAIN
>>>>
>>>>
>>>> 
This would complement compiler-rt and libstdc++. We intend to
>>>> import it in downstream Gentoo FreeBSD.
>>>> 
>>>> Could this be imported into FreeBSD-CURRENT?
>>> 
>>> Apart from licensing, what others reasons are there to do
>>> that?
>>> 
>> These components should not be tied to a specific compiler. If
>> GCC is going to be deprecated, then they should be replaced.
> 
>> Anyway, having this tied to GCC has caused headaches for Clang 
>> integration in Gentoo. In particular, we let the user pick the 
>> toolchain that he uses, so we cannot place GCC's crt{begin,end}.o
>> in the same location that FreeBSD uses. This makes it difficult
>> for Clang to find the correct crt{begin,end}.o. We will likely
>> import the NetBSD crt{begin,end}.S code to rectify this, but it
>> would be preferable to do this in upstreamFreeBSD.
> 
> Assuming NetBSD version is a direct plugin for crtbegin/end
> provided by GCC, I see no reason why we cannot do that. Are you are
> willing to do the work and submit the patch, or would like to wait
> for someone on our side?
> 

Gentoo FreeBSD is currently based on FreeBSD 9-RELEASE. I plan to do
the work to import this downstream within the week, but I am not
running CURRENT. It might be necessary to iterate on the patches
before they can be merged. When I have them, should I file a PR or
post them to the list?
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