How to build a toolchain into the target

[Thomas Petazzoni]

Hello Marc,

[ This question belongs to the Buildroot mailing list, at
  buildroot at uclibc.org ]

On Wed, 29 Sep 2010 17:03:48 -0400
"Marc W. Abel" <me at marcabel.com> wrote:

> Thanks in advance for bearing with me; I've read the uClibc FAQ and
> what I think is the buildroot documentation 
> (http://buildroot.uclibc.org/downloads/buildroot.html) a few times on 
> different days.  Somehow, I've gotten lost.
> 
> I'm working with buildroot-2010.08.
> 
> Question:  Can I build my toolchain to run on the target?  I'm
> laboring with the notion that all I had to do was check the right box
> in buildroot's menuconfig, but I never found that box.  The root
> filesystem I produced doesn't have a compiler, and the toolchain I
> seem to have built is for the host architecture.  (Host is x86-64,
> and target is i486.)

Two checkboxes are needed :

 Build options
  -> development files in target filesystem

and

 Package Selection for the target
  -> Development tools
     -> native toolchain in the target filesystem

However, note that having a native toolchain on the target is a fairly
unusual setup for Buildroot. All the point of Buildroot is to
cross-compile things, not to build natively. Therefore, the native
toolchain on target option is only lightly tested, and may have issues.

Regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com