Re: [bootstrappable] diverse double compilation: using $ORIGIN?

[Jan Nieuwenhuizen]

Ludovic Courtès writes:

>> Usage: guix build gcc-dcc
>>
>> Building gcc-dcc tests the diverse double compilation property
>> of the gcc that Guix is using.
>>
>> * gnu/packages/bootstrappable.scm: New file.
>> * gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
>
> Awesome!  Does it build fine out-of-the-box?  I didn’t expect it to be
> “this easy.”  :-)

I got very positive feedback from a slightly guix-sceptic person saying
something like: you lisp guys can do quite a lot with very little code.

However, all this patch adds is a test that fails: gcc built with gcc is
not bit-for-bit the same as gcc built with clang.

Since then I have included the build-path-prefix-map patch, use -rpath
$ORIGIN instead of -rpath "-lib", switched to gcc-7.2.0.  Still, no
bit-reproducibility.

Of course, Guix has the additional problem of the install-prefix that
debian and others do not have.

I'll be sending updated patches soon.

janneke.

-- 
Jan Nieuwenhuizen <address@hidden> | GNU LilyPond http://lilypond.org
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