Re: [Mingw-w64-public] Backporting multilib support to GCC 4.4.x tree

[Ozkan S. <se...@gm...>]

On Wed, Jun 30, 2010 at 10:32 PM, Paarvai Naai <ope...@gm...> wrote:
> Hi all,
>
> I am trying to build a mingw-w64 cross-compiler using the instructions
> outlined on the web.
>
> Originally I was successful in building a multilib cross-compiler
> using GCC 4.5.0, but now I want to backtrack to GCC 4.4.4.  This is
> because I found an optimization bug in GCC 4.5.0 that results in wrong
> code generation, making me now weary of using it.  Alas, it appears
> that GCC 4.5.0 isn't as stable as one might think...
>
> I see from a mailing group thread
>
> http://www.mail-archive.com/min...@li.../msg00467.html
>
> that there is a way to patch the older GCC 4.4.4 so that it supports
> multilib.  However, I could not find the patch itself on the thread,
> even though the poster alludes to such a patch working for him.  Is
> there some way I can get a patch for GCC 4.4.x for this purpose?
>
> I also see that there are the "Personal Builds" under "Toolchain
> sources" on the site.  Does this source distribution support multilib

It supports what -w64- features are already in 4.5.

> reliably?  Perhaps I use a patch from here to provide multilib support
> on the stock GCC 4.4.4 distribution?

Yes you can. The patches used there have comments
about what they are, so it should be easy to pick whatever
you need. Some ~~may~~ depend on one another but
I am sure you can figure that out,

>
> I also see that there are a ton of patches in
> mingw-w64-src_20100427_sezero.tar.gz.  Which are important for the
> proper function of GCC 4.4.x for mingw-w64 and which are icing?
> Ideally, I'd like to only apply what is critical for generating proper
> mingw-w64 target code, with multilib and unicode support.
>
> Again, I wouldn't be bothering with this if I had confidence in GCC
> 4.5.0, and at this point I can't wait for GCC 4.5.1 for my project.
>
> Thanks in advance!
> Paarvai

--
Ozkan