Re: [Ltib] Re: NEW LTIB...and Full Toolchain build....

[Steve Papacharalambous]

Hi Peter,

You're right, the tc-fsl-x86lnx-armeabi-nptl-4.1.2-3 toolchain does not
have support for the ARM CORTEX-A8 so would need to be updated.

The source rpm, tc-fsl-x86lnx-armeabi-nptl-4.1.2-3.src.rpm, is probably
a good starting point, but it will need significant modifications which
will be dependant on the specification of the new toolchain.  There are
%define variables in the spec file for each of the toolchain components
that can be updated to the later revisions that you intend to use in the
new toolchain.

However the rest of the changes that will be needed to the spec file are
dependant on the configuration of the toolchain that you intend to
build.  For example tc-fsl-x86lnx-armeabi-nptl-4.1.2-3.src.rpm builds a
multilib hard/soft float toolchain with the hard float libraries
optimised for devices with the vfp floating point unit.

The build scripts for tc-fsl-x86lnx-armeabi-nptl-4.1.2-3 toolchain look
for the FSF sources in: /opt/freescale/pkgs

Aside from building/testing a new toolchain yourself, some of the other
possibilities are:

- Request an updated toolchain from Freescale.

- CodeSourcery have a multilib ARM toolchain available for public
download that has been built with more recent toolchain components that
will generate code for the ARM CORTEX A8, but I'm not sure whether any
of the multilibs are optimised for the A8.

- Take a contract with Zee2.  In case you weren't aware Stuart and I are
no longer employed by Freescale, and are involved with Zee2 now.

Best regards,

Steve

On Tue, 2009-06-16 at 01:01 -0500, Peter Barada wrote:
> On Tue, 2009-03-31 at 08:08 +0100, Steve Papacharalambous wrote:
> 
> > If  you _really_ want to rebuild the toolchain then the source rpm is
> > available from the gpp:
> > http://www.bitshrine.org/gpp/tc-fsl-x86lnx-e500-dp-4.2.171-2.src.rpm
> > 
> > The source rpm contains all the build scripts and sources (with the
> > exception of the standard FSF source archives).  The build scripts will
> > look for the standard FSF source archives in: "/opt/freescale/pkgs"
> > 
> > Best regards,
> > 
> > Steve
> 
> Steve/Stuart,
> 
> If I *really* want to build a toolchain for ARM Cortex-A8 with NEON
> support from scratch, using a later toolchain than the 4.1.2 on
> bitshrine.org, then I'm guessing I need to grab the
> tc-fsl-x86lnx-armeabi-nptl-4.1.2-3.src.rpm, but I'm a bit unclear on
> how to tweak/edit the RPM spec file to update the BINUTILS/GCC/GLIBC
> versions to later than 2.17/4.1.2/2.5, as well as execute the RPM (and
> where the FSF sources are expected) to build the toolchain into an RPM
> that is usable by LTIB.
> 
> Any suggestions (and perhaps the answer should be added to the FAQ)?
> 
> Thanks in advance!
> 
> 
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