build for riscv64

[stsp]

I tried to build dosemu2 for riscv64, but on
that arch ubuntu doesn't provide cross binutils
in the form of the binutils-i686-linux-gnu package.
I filled this bug report:
https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/2029525
But I wonder if it is an ubuntu or debian bug.

@skitt do you know if cross binutils are
provided on debian for riscv64? And if not -
what can be done about that?

[1ras]

Just saw your question and here is the answer: https://packages.debian.org/sid/binutils-riscv64-linux-gnu

[stsp]

No, its not an answer.
And following the pattern of your
URL I tried here:
https://packages.debian.org/sid/binutils-i686-linux-gnu
And oops, riscv64 is not listed in an
arches of that package.

So this problem is not ubuntu-specific.
Does anyone know how to solve it on
a debian level?

[1ras]

Oh, when you wrote "I tried to build dosemu2 for riscv64" I assumed your native system is x86 and you want to cross compile for riscv64. But looks like the opposite is the case and you have a native riscv64 system where you want to cross compile for x86?

[stsp]

dosemu2 always require i686 binutils
to build a few DOS binaries.

[stsp]

That said it of course also require
riscv64 binutils, but their existence
I didn't doubt. :)

[skitt]

As you saw, binutils-i686-linux-gnu isn’t available on riscv64 (in Debian and Ubuntu). You filed a bug asking for it, which is a good start; if things don’t move it might be worth filing a merge request to add a riscv64 section to the package. But building binutils on riscv64 is slow currently, so it would be unwise to add too many cross-building packages there (the package builds in approximately five hours on amd64 with all the cross-building packages, and takes nearly as much time on riscv64 with none).

[stsp]

You filed a bug asking for it

Yes but only in ubuntu.
They may be following debian on
such instances, eg djgpp-binutils
appeared in ubuntu only via debian.

filing a merge request to add a riscv64 section [to the package

Thanks for the link.

takes nearly as much time on riscv64 with none

I guess its under qemu. :)

[skitt]

You filed a bug asking for it

Yes but only in ubuntu. They may be following debian on such instances, eg djgpp-binutils appeared in ubuntu only via debian.

The binutils maintainer in Debian and Ubuntu is the same person ;-).

takes nearly as much time on riscv64 with none

I guess its under qemu. :)

Heh — but no, the riscv64 build daemons are SiFive boards.