Re: -Wl,-z,noexecstack hack removed for Linux and FreeBSD

Hi Stephan, all,

Hmm, I'm not sure I understand why linking with "-z noexecstack" would
be a hack.

To me it is an additional security measure, to explicitly mark an
executable to not require executable stack pages (and not rely on
possibly incesure defaults).

So, I guess I would choose to keep linking with "-z noexecstack" (and in
fact think, every executable in the system should be linked that way).

Just my 2 cents,
Matthias

On 06/22/2010 09:31 AM, Stephan Bergmann wrote:
> The fix for <http://qa.openoffice.org/issues/show_bug.cgi?id=110197>
> "solenv: remove -Wl,-z,noexecstack hack," on CWS sb126 targeting OOo
> 3.4, removes from the OOo code base virtually all mentions of
> noexecstack (see issue for details).  Most mentions were in Linux-only
> code (where the need for the hack was probably only motivated by the old
> Sun Hamburg tool chain, and so the hack is no longer needed after the
> recent upgrade of that tool chain).
> 
> But some mentions were in code relevant for Linux and FreeBSD.  I assume
> that this was by accident rather than by design, and the
> -Wl,-z,noexecstack was never really necessary on FreeBSD (and it was
> just lumped together with other pieces of code that actually are
> relevant on both platforms).
> 
> Let me know if this change causes any problems,
> 
> -Stephan
> 
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