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To: <gentoo-science@g.o>
From: Christopher Schwan <cschwan@...>
Subject: Re: sci-libs/mpir for the main tree
Date: Fri, 17 Dec 2010 15:16:02 +0100
On Friday 17 December 2010 14:55:03 Thomas Kahle wrote:
> On 14:22 Fri 17 Dec     , Christopher Schwan wrote:
> > Mpir's configure scripts looks like its adding "-Wl,-z,noexecstack" if it
> > detects a gcc+x86/amd64 configuration - so I guess noexecstack should
> > work out of the box. If it does not I would consider this as broken.
> 
> Yes, I saw that. The configure method fails directly, it just does *not*
> add the ldflag (at least when configure is run by portage).
> 
> I also tried to add "-Wl,-z,noexecstack" via append-ldflags, and it is
> indeed appended as visible in the compile output, but the exec stacks
> are still there and the QA warning comes up, so I guess we can consider
> this broken and stick with your solution of patching the asm (which sill
> works fine)

Did you read http://www.gentoo.org/proj/en/hardened/gnu-stack.xml ? The 
document proposes a slightly different approach for assembler files:

    append-flags -Wa,--noexecstack

Which tells the assembler to use --nostack (instead of telling the linker to 
use -z,noexecstack).

> 
> Cheers,
> Thomas

Cheers,
Christopher


Replies:
Re: sci-libs/mpir for the main tree
-- Thomas Kahle
References:
sci-libs/mpir for the main tree
-- Thomas Kahle
Re: sci-libs/mpir for the main tree
-- Christopher Schwan
Re: sci-libs/mpir for the main tree
-- Thomas Kahle
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Updated Jun 15, 2012

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