Re: is that "install glibc headers" step in crosstool necessary?

["Robert P. J. Day" <rpjday at mindspring dot com>]

On Thu, 3 Nov 2005, Greg Schafer wrote:

> On Wed, Nov 02, 2005 at 06:49:05AM -0500, Robert P. J. Day wrote:
>
> >   i was just perusing the cross-LFS docs and noticed that *their*
> > recipe for building a toolchain didn't involve the installation of
> > glibc headers between the binutils and bootstrap gcc steps.
>
> The cross-LFS docs are incorrect. The writers have been informed of
> their mistake yet they continue to fly in the face of common
> cross-toolchain wisdom. Please read this post for some of the
> technical details:
>
>   http://linuxfromscratch.org/pipermail/lfs-dev/2005-July/052409.html
>
> And please read the reply to another post of mine on the GCC list by
> Jim Wilson (a toolchain expert):
>
>   http://gcc.gnu.org/ml/gcc/2005-07/msg01206.html
>
> In summary, it *is* possible to build cross-toolchains on some
> arch's without the Glibc headers step... but it results in
> unsatisfactory code related to exception handling, stack unwinding
> and thread cancallation. I'm no expert but I have done loads of
> research and testing. Nevertheless, I am smart enough to listen to
> the GCC gurus... trust me.. I've done the hard yards with Google on
> this topic and the evidence confirms that building Glibc based
> cross-toolchains without the Glibc headers step is just plain wrong.

thanks, that is a supremely valuable bit of info.

rday

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