Re: [ECOS] How to build big-endian arm libraries for the Intel XScale IXP425

["Krishna Ganugapati" <krishnag at marakicorp dot com>]

Jonathan and Gary,

Thank you very much for your help.

I've started a clean build again  this time with the additional big-endian
patch. Jonathan, I did "/gnutools/tools/bin/arm-elf-gcc -print-multi-lib"
and as expected, there was no configuration indicating "xscale big-endian".

- Krishna
___________________________________
Krishna Ganugapati
Maraki Corporation
email:  krishnag@marakicorp.com

----- Original Message -----
From: "Jonathan Larmour" <jifl@eCosCentric.com>
To: "Krishna Ganugapati" <krishnag@marakicorp.com>
Cc: <ecos-discuss@sources.redhat.com>
Sent: Monday, February 23, 2004 12:55 PM
Subject: Re: [ECOS] How to build big-endian arm libraries for the Intel
XScale IXP425


> Krishna Ganugapati wrote:
> >
> >   a.. binutils-2.13.1-v850-hashtable.patch
> >   b.. gcc-3.2.1-arm-multilib.patch   ------------> This should have been
> > warning enough. Its 2004 - perhaps Gary's patch of May 2003  has already
> > been folded appropriately into this  patch... (speculative)
>
> IIRC that patch would conflict with the arm multilib one because they
> affect similar areas in the same file. Although if so I'd expect the
> toolchain build to fail.
>
> Anyway, the "official" way to build is to download
> http://ecos.sourceware.org/gcc-3.2.1-arm-be.patch and apply that _after_
> having applied gcc-3.2.1-arm-multilib.patch
>
> >   c.. insight-5.3-tcl_win_encoding.patch
> >  The tools took some amount of time to build, but built flawlessly. All
my
> > tools were stored in /gnutools on my machine.
> >
> > I then fired up the configtool - changed the build path to /gnutools
from
> > /opt/ecos/gnutools and surprise I saw the message "/gnutools does not
appear
> > to contain the build tools - use this folder anyway?"
>
> Did you see if there was anything in there? Did the toolchain build
> definitely succeed?
>
> > Questions:
> >
> > Am I right in assuming that gcc-3.2.1-arm-multilib.patch that is
provided
> > with the toolchain sources is a patch that generates all necessary
binaries
> > and libraries for all variants of  arm. More specifically, does this
patch
> > once applied force generation of binaries and libraries necessary for
> > building a big-endian arm target for the Intel XScale IXP425?  If this
is
> > correct, my potential moral is now a real moral..
>
> It doesn't include big-endian support.
>
> > Can I therefore assume that my binaries were successfully built
>
> Nope. Look there and find out! In particular from the command line try
> running "/gnutools/tools/bin/arm-elf-gcc -print-multi-lib" to see if
> big-endian libraries are included.
>
>
> > Could someone kindly explain to me why this message pops up - the
toolchain
> > is nicely installed in /gnutools - I point the "Build Path" to
/gnutools -
> > is there anything else I need to do?
>
> It probably means there aren't tools there ;-).
>
> > Could someone explain what gcc-3.2.1-arm-multilib.patch does? My reading
of
> > diff files is poor.
>
> It allows the compiler to support various alternative configurations, or
> optimisations for certain configurations, specifically:
>
> thumb
> thumb interworking
> arm9
> strongarm
> xscale
>
> big-endian is another option, but is included in the separate patch above.
>
> > Might I humbly suggest that the website be updated to indicate that
ecos2.0
> > toolchains do not provide the big-endian support for arm - presumably
for
> > size reasons and how to go about building a big-endian toolchain?
>
> The big-endian patch isn't mentioned in the instructions for rebuilding
> tools, so I've added that.
>
> Jifl
> --
> eCosCentric    http://www.eCosCentric.com/    The eCos and RedBoot experts
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>


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