Re: Anyone cross-bootstrap a GCC compiler onto a linux board?

[Bill Gatliff <bgat at billgatliff dot com>]

Bill Gatliff wrote:

> Peter:
>
>
> I've done something similar, building a Linux runtime that had pretty 
> much everything except the cross development tools.  I think I even 
> went as far as to build binutils, but at the time it was just to see 
> if I could do it.  :^)
>
> Without going through it here first (I have Linux and NetBSD runtimes 
> building on my workstation for other projects as we speak, my disk 
> space is getting tight!), the general idea is something like:
>
> * First build a complete, glibc-based x86-hosted ppc-linux 
> (x86->ppc-linux) target toolchain
> * Build a complete glibc target runtime environment, and test it
> * Use --host and --build, in addition to --target and --prefix, to 
> configure your ppc-linux->ppc-linux toolchain
> * Use --program-prefix= during ppc-linux->ppc-linux configuration, 
> probably --program-prefix=""
>
> Use config.guess to identify the proper --build setting, and 
> --host=ppc-linux.
>
> You'll know you've got it when the "file" utility tells you that your 
> ${PREFIX}/bin/gcc is a ppc-linux application, and is statically linked.
>
> I would be happy to help out later this week, today isn't such a good 
> day.  :^)
>
>
> HTH,
>
>
> b.g.
>
> Peter Barada wrote:
>
> > I've built a ppc-linux cross-compiler that runs on my x86 box, but
> > I'm trying to bootstrap a compiler onto the ppc board so I can build
> > code natively(or native on/for the ppc).
> >
> > To do this I'd need a ppc-linux toolchain that:
> >
> > 1) Runs on the x86 box
> > 2) Doesn't have any prefix (ppc-linux-)
> > 3) Is installed somewhere else than the system directory
> > 4) Can be used to compile a kernel and a small set of utilities(that
> >   expect to find their libraris in the 'usual' places).
> > 5) Can be used to compile the compiler to produce a native
> >   installation
> >
> > Has anyone done(or even tried) this before?  I've started reading
> > Karim's Yaghmour book 'Building Embedded Linux Systems' (excellent
> > book by the way), and I'm thinking this would be an easier approach
> > than having to hack up software packages Makefiles to get them to
> > cross-compile.
> >
> > Does anyone have any suggestions on the best way for me to proceed?
> >
> >  


--
Bill Gatliff
In the dark on embedded Linux?	Step into the light.
http://billgatliff.com



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