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[bug#54239] [PATCH v2 1/5] gnu: Add cross-llvm.
From: |
Julien Lepiller |
Subject: |
[bug#54239] [PATCH v2 1/5] gnu: Add cross-llvm. |
Date: |
Sat, 5 Mar 2022 09:24:45 +0100 |
Le Fri, 04 Mar 2022 19:34:07 +0000,
Pierre Langlois <pierre.langlois@gmx.com> a écrit :
> Hi Julien,
>
> Julien Lepiller <julien@lepiller.eu> writes:
>
> > * gnu/packages/llvm.scm (cross-llvm): New variable.
>
> Do you really need to define a cross package for LLVM? In my
> experience it was possible to use the same llvm libraries for native
> and cross compilation. By default LLVM builds support for all
> supported targets (provided they are not "experimental" IIRC).
No, I don't think it's required. I only need it so I can define a
default target that's different from the host.
>
> Whereas for the clang package, at the moment it does have to be built
> for a specific target IIUC. I hope that one day we could have the same
> clang for native and cross compilation in Guix, but I don't think it
> can work without some serious re-design of how cross-compilation
> works. I've been trying to think about it but I don't yet have a good
> understanding of it.
You can use --target to control which target clang builds for (although
I don't know if our clang package can work like that). I wanted to have
a default target though, because passing --target all the time is
cumbersome and we would have to adjust all recipes to pass the flag.
With the default target set appropriately, (clang-for-target) will
always produce binaries for the correct architecture, whether
cross-compiling or not.
>
> Thanks,
> Pierre
>
[bug#54239] [PATCH v2 5/5] gnu: Add libcxxabi-9., Julien Lepiller, 2022/03/04
[bug#54239] [PATCH v2 3/5] gnu: libcxx: Allow cross-compilation., Julien Lepiller, 2022/03/04
[bug#54239] [PATCH v2 4/5] gnu: libcxxabi-6: Allow cross-compilation., Julien Lepiller, 2022/03/04
[bug#54239] [PATCH v2 1/5] gnu: Add cross-llvm., Pierre Langlois, 2022/03/04
[bug#54239] [PATCH v2 1/5] gnu: Add cross-llvm., Pierre Langlois, 2022/03/05