Re: [Qemu-devel] [PATCH v2 00/43] fix building of tests/tcg

["Alex Bennée" <alex.bennee@linaro.org>]

Richard Henderson <richard.henderson@linaro.org> writes:

> On 04/19/2018 03:58 AM, Alex Bennée wrote:
>> What would be really
>> helpful is if the respective maintainers could encode their EXACT
>> STEPS for building their cross compilers into some docker recipes.
>
> I've just re-built my alphaev67 cross-environment and recorded everything.
>
> Since the script begins with rebuilding glibc, it assumes you *already* have a
> cross-compiler.  If you don't have that, then you start in the middle of the
> script with the GCC build.  But in that case you must have the sysroot.tar.gz
> that the first half just created.

Could you send me the sysroot.tar.gz?

>
> Starting without that seed tarball is hard, as previously mentioned.  For
> better supported platforms than alpha you can typically pull the same files
> from e.g. debian packages or a gentoo stage3 tarball.

Hmm I was hoping I could use --without-sysroot to build a gcc just for
building glibc and then re-build gcc once glibc was boot-strapped. But
that doesn't seem to work...

Maybe for alpha we just have to accept there is a blob of sysroot to get
the build going? Of course we should probably host that blob on qemu's
servers somewhere...

> While I've used git gcc/binutils/glibc, because I had them handy, of course
> everything would work equally well using release tarballs for each project.
>
> Let me know if you have any questions re cross-tools.
>
>
> r~


--
Alex Bennée