[bug#46725] [PATCH] gnu: guile-lib: Fix cross compilation.

[Ludovic Courtès]

Hi!

Christopher Baines <mail@cbaines.net> skribis:

> These changes were sent upstream as
> https://lists.gnu.org/archive/html/guile-devel/2021-02/msg00004.html
>
> Without this change, the .go files are built for the host architecture, rather
> than the target. I noticed this when cross building the
> guix-build-coordinator (for which guile-lib is an input) to the Hurd.
>
> * gnu/packages/guile-xyz.scm (guile-lib)[arguments]: Add
> 'patch-for-cross-compilation phase.
> [native-inputs]: Add autoconf, automake and gettext.
> (guile2.0-lib): Adjust to use alist-replace.
> (guile2.2-lib): Adjust to use alist-replace.

[...]

> +             (substitute* "configure.ac"
> +               (("GUILE_FLAGS")
> +                "GUILE_FLAGS
> +if test \"$cross_compiling\" != no; then
> +   GUILE_TARGET=\"--target=$host_alias\"
> +   AC_SUBST([GUILE_TARGET])
> +fi

You could even set ‘GUILE_TARGET’ unconditionally.

Otherwise LGTM.

Thanks,
Ludo’.