Preparing toolchain on a Pentium III Redhat 7.0

Guy M. Streeter streeter at
Wed Apr 16 06:15:15 EST 2003

 The version of gcc that is already on the system makes very little
difference, since you are building a new compiler. gcc 2.96 is a fine
compiler for x86, and is more than sufficient for bootstrapping a new

 I'm fairly sure that the toolchain instructions on are
instructions for building the toolchain on a ppc system. I expect that a
considerable amount of additional work would be necessary to create a
cross-build ppc64 toolchain on an x86 system.
 Additionally, parts of the kernel build process depend on a native
32bit ppc compiler. If you want to build the kernel for ppc64 on an x86
system, you will need to create a 32bit ppc cross-build toolchain, and
modify parts of the kernel Makefiles to invoke it where the 32bit ppc
compiler is expected.
 It will be far easier to build the ppc64 kernel on a ppc system.


On Tue, 2003-04-15 at 14:48, Jan Smith wrote:
> On Tue, 2003-04-15 at 16:54, VAKKALANKA RAO Sridhar wrote:
> > Hello,
> >
> > I acquired a p630 6E4 with a AIX 5.1 (target operating system with no development environment) on it. My goal is to install a PPC64 linux on it. However, progress was completely blocked because AIX 5.1 is not receptive to GNU tools. So I acquired a Pentium III with Redhat 7.0 and used CVS to download latest sources for the kernel, binutils, gcc & glibc - this is with the hope of cross building the toolchain and cross compiling the kernel.
> >
> > In the url, the configuration parameters for "binutils" for the first pass state "--target=powerpc-linux". Should this not be "--target=powerpc64-linux" instead?
> >
> > When I execute "config.guess" on the Pentium III Redhat 7.0, I receive the output "i686-pc-linux-gnu". So, when I set up the configuration parameters for the cross-build, should I replace every occurence of "powerpc-linux" (displayed in the url) to "i686-pc-linux-gnu" and at the same time keep every occurence of "powerpc64-linux" the same?
> >
> > Is it possible to cross build the PPC64 kernel and toolchain even though the Pentium III is a 32 bit machine?
> >
> > I really would appreciate an answer
> I'd really sugest you to use another version of RH as just v7.0 has a
> totally broken gcc. Choose 8.0 or 9 instead or if you want to use an old
> version take v6.2. gcc v2.96 which is a beta version of GCC3 are
> building very bad binaries.
> Another solutions is to install a 32bit PPC-Linux and start from there.
> That will probably be much easier. I've tried to do that for the kernel
> on a pSeries 640 B80 with great success. But it was just a test as I
> didn't have any 64bit glibc at that time. (There were no one available
> 18 months ago.)
> Good luck
>    /Jan Smith

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