Re: [discuss] Problem building cross compiler for x86_64

[Mike Frysinger <vapier at gentoo dot org>]

On Thursday 19 January 2006 13:21, Andi Kleen wrote:
> On Thursday 19 January 2006 19:19, Mike Frysinger wrote:
> > On Thursday 19 January 2006 12:18, Andi Kleen wrote:
> > > On Thursday 19 January 2006 12:18, Jan Beulich wrote:
> > > > Why would you need to build glibc when you want a cross compiler?
> > >
> > > The unwinder in libgcc2 needs libc harders unfortunately. Long ago
> > > it could be workarounded with -Dinhibit_libc=1, but that has since then
> > > bitrotted.
> >
> > for linux targets yes (although with gcc-4.x, it takes two lines of
> > additional code to bring back this "feature")
>
> If you already solved it you should perhaps consider to grace the gcc
> people with your wisdom and send them a patch.

i tried and was happly flamed for proposing such ideas :)

the reason they dont like it (and wont accept it) is that inhibiting libc 
breaks unwind/thread support in the compiler for linux targets

although, this doesnt matter at all if all you want to do is cross-compile a 
kernel or some apps which dont require the aforementioned support
-mike

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