Re: [core-updates] aarch64: Cannot build glibc-2.39

["Ludovic Courtès" <ludo@gnu.org>]

Hey Ricardo!

Ricardo Wurmus <rekado@elephly.net> skribis:

>> You can reproduce this like so:
>>
>>   ./pre-inst-env guix build -K --system=aarch64-linux -e \
>>       '((@@ (gnu packages make-bootstrap) glibc-for-bootstrap) (@ (gnu packages base) glibc))'
>
> I was able to build that glibc with this diff:
>
> diff --git a/gnu/packages/bdw-gc.scm b/gnu/packages/bdw-gc.scm
> index 8eed98d1fd..acd0033d1e 100644
> --- a/gnu/packages/bdw-gc.scm
> +++ b/gnu/packages/bdw-gc.scm
> @@ -114,8 +114,14 @@ (define-public libgc/static-libs
>     (arguments
>      (substitute-keyword-arguments (package-arguments libgc)
>        ((#:configure-flags flags #~'())
> -       #~(cons "--enable-static" #$flags))))
> -
> +       #~(cons "--enable-static" #$flags))
> +      ((#:make-flags flags #~'())
> +       (cond
> +        ((target-aarch64?)
> +         ;; This is a known workaround upstream.
> +         ;; https://github.com/ivmai/bdwgc/issues/479
> +         #~(list "CFLAGS_EXTRA=-DNO_MPROTECT_VDB"))
> +        (else flags)))))
>     (properties '((hidden? . #t)))))

This one LGTM, I think you can push it on ‘core-updates’.

> diff --git a/gnu/packages/make-bootstrap.scm b/gnu/packages/make-bootstrap.scm
> index 63c84e93ef..0c513040d6 100644
> --- a/gnu/packages/make-bootstrap.scm
> +++ b/gnu/packages/make-bootstrap.scm
> @@ -90,8 +90,11 @@ (define glibc-for-bootstrap
>        ;; Make sure to build glibc with the same compiler version as the rest
>        ;; of the bootstrap.  Otherwise it fails to statically link on aarch64.
>        (native-inputs
> -       `(("gcc" ,gcc-7)
> -         ,@(package-native-inputs base)))
> +       (if (target-aarch64?)
> +           (modify-inputs (package-native-inputs base)
> +             (replace "gcc" gcc-7))
> +           `(("gcc" ,gcc-7)
> +             ,@(package-native-inputs base))))

What’s the rationale here?  I would expect both to be almost equivalent.
At any rate, I would remove the ‘if’: it should be the same on all
platforms.

> I'm now failing at the build of guile-static-initrd:
>
> removing store references from `/gnu/store/wir05g46map9dd3y5sn3nwpblaydhmj5-guile-static-initrd-3.0.9/bin/guile'...
> qemu-aarch64: Could not open '/gnu/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-glibc-2.39/lib/ld-linux-aarch64.so.1': No such file or directory

This suggests that the ‘guile’ binary is not actually statically linked:
it has PT_INTERP set to ld-linux*.so.  This is surprising because
there’s no such problem on x86_64-linux.  Maybe one of the build flags
for static builds is getting lost somewhere?

Thanks,
Ludo’.