Re: Kernel Cross Compiling

[Herbert Poetzl <herbert@13thfloor.at>]

On Sat, Feb 14, 2004 at 02:08:41AM +0100, Herbert Poetzl wrote:
> On Fri, Feb 13, 2004 at 04:58:56PM -0800, David Mosberger wrote:
> > >>>>> On Fri, 13 Feb 2004 22:44:20 +0100, Herbert Poetzl <herbert@13thfloor.at> said:
> > 
> >   >> A recipe for building ia32->ia64 cross-toolchain on Debian can be
> >   >> found here:
> > 
> >   >> http://www.gelato.unsw.edu.au/IA64wiki/CrossCompilation
> > 
> >   Herbert> that might work with the ia64 libraries and headers, but it
> >   Herbert> seems to fail, with the headers included in the gcc
> >   Herbert> tarball, for cross compiling, if you get it to compile
> >   Herbert> without (g)libc which should not be required to build the
> >   Herbert> crossgcc and the kernel, I would be very interested ...
> > 
> > Ah, I see now what you mean.  I suspect that's a setup that's rarely
> > tested, so I'm not surprised to see some breakage.
> > 
> > Having said that, I got gcc v3.3.3 20031212 (prerelease) to build with
> > minor tweaks (see patch below).  I'm no GCC-built-environment expert
> > and I'm quite certain that the patch isn't totally correct, but all
> > the unwind-related stuff isn't really needed in your case, because
> > that code only comes into play for exception-handling and C cleanup
> > handlers.
> > 
> > The unwind-sjlj.c problem should occur on most other platforms too, so
> > I don't think that problem is ia64-specific.
> 
> ah, thanks, will test it, and maybe upgrade to 3.3.3
> if this seems necessary ...

okay, status update ... thanks to David, ia64 gcc is now
working, I updated the fix for ia64 and made a testrun for
2.4.25-rc2 ...

linux-2.4.25-rc2        config  dep     kernel  modules

ia64/ia64:		OK	OK	FAILED	FAILED

> best,
> Herbert
> 
> > 	--david
> > 
> > Index: gcc/unwind-sjlj.c
> > ===================================================================
> > RCS file: /cvs/gcc/gcc/gcc/unwind-sjlj.c,v
> > retrieving revision 1.11.2.2
> > diff -u -r1.11.2.2 unwind-sjlj.c
> > --- gcc/unwind-sjlj.c	2 May 2003 21:01:21 -0000	1.11.2.2
> > +++ gcc/unwind-sjlj.c	14 Feb 2004 00:50:33 -0000
> > @@ -22,7 +22,9 @@
> >  #include "tconfig.h"
> >  #include "tsystem.h"
> >  #include "unwind.h"
> > +#ifndef inhibit_libc
> >  #include "gthr.h"
> > +#endif
> >  
> >  #ifdef __USING_SJLJ_EXCEPTIONS__
> >  
> > Index: gcc/unwind.h
> > ===================================================================
> > RCS file: /cvs/gcc/gcc/gcc/unwind.h,v
> > retrieving revision 1.7.2.6
> > diff -u -r1.7.2.6 unwind.h
> > --- gcc/unwind.h	4 Sep 2003 09:39:44 -0000	1.7.2.6
> > +++ gcc/unwind.h	14 Feb 2004 00:50:33 -0000
> > @@ -195,7 +195,9 @@
> >     compatible with the standard ABI for IA-64, we inline these.  */
> >  
> >  #ifdef __ia64__
> > -#include <stdlib.h>
> > +# ifndef inhibit_libc
> > +#  include <stdlib.h>
> > +# endif
> >  
> >  static inline _Unwind_Ptr
> >  _Unwind_GetDataRelBase (struct _Unwind_Context *_C)
> > Index: gcc/config/ia64/fde-glibc.c
> > ===================================================================
> > RCS file: /cvs/gcc/gcc/gcc/config/ia64/fde-glibc.c,v
> > retrieving revision 1.5
> > diff -u -r1.5 fde-glibc.c
> > --- gcc/config/ia64/fde-glibc.c	15 Dec 2001 11:46:51 -0000	1.5
> > +++ gcc/config/ia64/fde-glibc.c	14 Feb 2004 00:50:34 -0000
> > @@ -31,6 +31,9 @@
> >  #ifndef _GNU_SOURCE
> >  #define _GNU_SOURCE
> >  #endif
> > +
> > +#ifndef inhibit_libc
> > +
> >  #include "config.h"
> >  #include <stddef.h>
> >  #include <stdlib.h>
> > @@ -162,3 +165,5 @@
> >  
> >    return data.ret;
> >  }
> > +
> > +#endif
> > Index: gcc/config/ia64/linux.h
> > ===================================================================
> > RCS file: /cvs/gcc/gcc/gcc/config/ia64/linux.h,v
> > retrieving revision 1.23
> > diff -u -r1.23 linux.h
> > --- gcc/config/ia64/linux.h	3 Sep 2002 21:09:54 -0000	1.23
> > +++ gcc/config/ia64/linux.h	14 Feb 2004 00:50:34 -0000
> > @@ -58,7 +58,7 @@
> >  /* Do code reading to identify a signal frame, and set the frame
> >     state data appropriately.  See unwind-dw2.c for the structs.  */
> >  
> > -#ifdef IN_LIBGCC2
> > +#ifdef x_IN_LIBGCC2
> >  #include <signal.h>
> >  #include <sys/ucontext.h>
> >  
> -
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