bug#27076: [PATCH] build-system/cmake: Add support for cross compilation.

[Ricardo Wurmus <rekado@elephly.net>]

Ludovic Courtès <ludo@gnu.org> writes:

> Hi,
>
> Ricardo Wurmus <rekado@elephly.net> skribis:
>
>> * guix/build-system/gnu.scm: Export standard-cross-packages.
>> * guix/build-system/cmake.scm (cmake-cross-build): New procedure.
>> (lower): Add support for cross-builds.
>> * guix/build/cmake-build-system.scm (configure): Handle "target" argument.
>
> Awesome!  This also fixes <https://bugs.gnu.org/26897>.

I’ll update the commit message to mention it.

>> +                  ;;  Cross-build
>> +                  ,@(if target
>> +                        (list (string-append "-DCMAKE_C_COMPILER="
>> +                                             target "-gcc")
>> +                              ;; XXX: Use "Windows" when this is a cross-build
>> +                              ;; for Windows.
>> +                              "-DCMAKE_SYSTEM_NAME=Linux")
>> +                        '())
>
> Should we check whether TARGET contains “mingw”, “linux”, or “gnu” and
> adjust that accordingly?

Yes, sounds good.

> Otherwise LGTM!

Okay, I’ll push it to core-updates, because this results in a rebuild of
all packages using the cmake-build-system.

-- 
Ricardo

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