Re: Building a big endian xscale toolchain with softfloat support.

[Dan Kegel <dank at kegel dot com>]

Frank Meerkoetter wrote:
> i'm trying to build a toolchain for an IXP2800(xscale) processor.
> The toolchain needs softfloat support and i should produce big endian
> binaries by default.
> I'm using crosstool-0.28-rc23.
> I've uncommented the following line in demo-arm-softfloat.sh
> eval `cat arm-softfloat.dat gcc-3.3.3-glibc-2.3.2.dat` sh all.sh --notest
>
> I've modified arm-softfloat.dat the following way:
> KERNELCONFIG=`pwd`/arm.config
> TARGET=armb-softfloat-linux-gnu
> TARGET_CFLAGS="-O"
> GCC_EXTRA_CONFIG="--with-float=soft --with-cpu=xscale"
> GLIBC_EXTRA_CONFIG="--without-fp"
>
> To make the toolchain big endian by default i put the following patch
> into $(crosstoolpath)/patches/gcc-3.3.3/: ...
> http://www.davehylands.com/linux/ARM-bigendian/gcc-uclibc-3.3-300-bigend.patch
>
> The creation of the toolchains fails while running configure for the
> binutils:
>
> configure: error: Unrecognized target system type; please check
> config.sub.
> make: *** [configure-bfd] error 1
>
> I had a look at config.sub
>
> case $basic_machine in
>    [...]
>    | arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr
>    [...]
>
> As for as i could see the target should by known.

I don't think armb matches that set of patterns.  Try armbe or armeb.
Also, try crosstool-0.28-rc24, it has a patch for arm bigendian glibc strlen.

You may also want to talk with the folks on the
linux-arm-toolchain@lists.arm.linux.org.uk mailing list.
(That's like an offshoot of the crossgcc list, but arm-linux specific.)
- Dan

--
My technical stuff: http://kegel.com
My politics: see http://www.misleader.org for examples of why I'm for regime change

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