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

[Steve Papacharalambous]

On Mon, 2009-06-29 at 11:46 -0400, Peter Barada wrote:
> On Tue, 2009-06-16 at 10:23 +0100, Steve Papacharalambous wrote: 
> > 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.
> 
> After some hacking, I've been able to build a toolchain based on
> binutils-2.19.1, gcc-4.4.0, and glibc-2.9, using the
> tc-fsl-x86lnx-armeabi-nptl-4.1.2-3.src.rpm (resultant SRPM attached).
> I'm trying to use a i386 version build on Ubuntu 9.04, and running it
> on my x64 Ubuntu 9.04 (which has the 32-bit libraries installed and
> can run the 4.1.2 ARM toolchain to build up my ARM rootfs/kernel).
> 
> Unfortunately when I try to run the new toolchain on my x64 Ubuntu, it
> aborts with:
> 
> sudo /opt/ltib/usr/bin/rpm --dbpath /opt/ltib/var/lib/rpm -ivh --force
> --ignorearch 
> /home/peter/work/logic/svn/LTIB/trunk/ltib-test/lpd-BASE-package-pool/tc-lpd-x86lnx-armeabi-nptl-4.4.0-1.i386.rpm
> Preparing...
> ########################################### [100%]
> 
> 1:tc-lpd-x86lnx-armeabi-n###########################################
> [100%]
> /opt/ltib/usr/local/gcc-4.4.0-glibc-2.9-nptl-1/arm-none-linux-gnueabi/libexec/gcc/arm-none-linux-gnueabi/4.4.0/cc1:
>  error while loading shared libraries: libmpfr.so.1: cannot open shared 
> object file: No such file or directory
> 
> Error 
> /opt/ltib/usr/local/gcc-4.4.0-glibc-2.9-nptl-1/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-gcc
>  can't compile a simple hello world test program:
> 
> echo '#include <stdio.h>
> int main() { printf("hello world"); }'
> | 
> /opt/ltib/usr/local/gcc-4.4.0-glibc-2.9-nptl-1/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-gcc
>  -x c - -c -o /dev/null
> 
> 
> Any ideas where I can find a 32-bit verison of libmpfr I can load on
> my x64 verison?  I've hunted around and can find libmpfr, libmpfr-dev,
> but no lib32mpfr or lib32mpfr-dev components I can load with "apt-get
> install".
> 
> Any help is appreciated - thanks in advance!

Hi Peter,

One method is to build gmp and mpfr as part of the toolchain build
process and then link the gcc executable directly with these libraries.

When building gmp and mpfr they should be configured with
"--disable-shared"

Then add the following to the gcc configuration parameters:

"--with-gmp=<path to the gmp libraries>"
"--with-mpfr=<path to the mpfr libraries>"

The gcc executables in the toolchain are built statically linked to the
desired version of the mpfr and gmp libraries, and removes any
dependencies on these libraries from the host installation.

This is just one way to get over these dependencies which is used by
some of the toolchain suppliers, there are others....

Best regards,

Steve