Re: Building x64 kernel on i686 broken in 6.12.

[Sven Joachim <svenjoac@gmx.de>]

On 2025-06-19 21:14 -0700, David F. wrote:

> I'm resending this since no response.   It appears something was
> changed to address ARM64 and it broke building x64 on i686 which I've
> done for a very long time.
>
> Resending:
>
>
> I always build both the i686 and x64 kernel on my VM which has changed
> through the years from debian (several distros) to now devuan-chimaera
> (couple years now). Last build was 6.6.x but now jumping to 6.12.x. I
> can build the 686 version however, it won't build the x64 version and
> gives me a dependency issue.
>
> At first it was gcc-x86-64-linux-gnu, libssl-dev
>
> I first updated libssl-dev, then the gcc-x86-64-linux-gnu with apt-get install
>
> It now just says it doesn't like libssl-dev but it's installed and up to date.

You need to install libssl-dev for both the host and the build
architecture, so install libssl-dev:amd64.

Alternatively, if you do not need the linux-headers package, use the
pkg.linux-upstream.nokernelheaders build profile, like so:

$ DEB_BUILD_PROFILES=pkg.linux-upstream.nokernelheaders make [...] bindeb-pkg

See commit e2c318225ac1 ("kbuild: deb-pkg: add
pkg.linux-upstream.nokernelheaders build profile").

Cheers,
       Sven