Re: Architecture questions

[Goswin von Brederlow <brederlo@informatik.uni-tuebingen.de>]

John Goerzen <jgoerzen@complete.org> writes:

> Hello,
> 
> I have some questions about what the architecture should look like on
> AMD64.
> 
> On the Alioth environment, I see this:
> 
> CHROOT root@arwen:~/port/tar-1.13.92# dpkg --print-architecture
> amd64
> CHROOT root@arwen:~/port/tar-1.13.92# dpkg-architecture
> DEB_BUILD_ARCH=amd64
> DEB_BUILD_GNU_CPU=x86_64
> DEB_BUILD_GNU_SYSTEM=linux
> DEB_BUILD_GNU_TYPE=x86_64-linux
> DEB_HOST_ARCH=amd64
> DEB_HOST_GNU_CPU=x86_64
> DEB_HOST_GNU_SYSTEM=linux
> DEB_HOST_GNU_TYPE=x86_64-linux

Thats the correct information.

> Now, when I use that environment to build a pure 64-bit dpkg and gcc,
> using unpatched packages from sid, I get this result:
> 
> PURETEST root@arwen:/port/t/elvis-tiny-1.4# dpkg --print-architecture
> dpkg: warning, architecture `x86_64-linux' not in remapping table
> x86_64-linux
> PURETEST root@arwen:/port/t/elvis-tiny-1.4# dpkg-architecture
> dpkg-architecture: warning: Unknown gcc system type x86_64-linux,
> falling back to default (native compilation)
> dpkg-architecture: warning: Specified GNU system type  does not match
> gcc system type x86_64-linux.
> DEB_BUILD_ARCH=x86_64-linux-gnu
> DEB_BUILD_GNU_CPU=
> DEB_BUILD_GNU_SYSTEM=
> DEB_BUILD_GNU_TYPE=
> DEB_HOST_ARCH=x86_64-linux-gnu
> DEB_HOST_GNU_CPU=
> DEB_HOST_GNU_SYSTEM=
> DEB_HOST_GNU_TYPE=
> 
> So I have these questions:
> 
> 1. Is the proper Debian architecture amd64 or x86_64-linux?
> 
> 2. Is the proper GNU architecture x86_64-linux-gnu or x86_64-linux?
> 
> 3. How do I fix incorrect ideas about GNU architecture if necessary?
>
> One other interesting tidbit: that dpkg that reported an architecture of
> x86_64-linux had no problem installing .debs with an arch of amd64, and
> in fact, its own package has that arch.
> 
> Thanks,
> John Goerzen

You need the patches adding amd64 support to dpkg which are part of
the multiarch stuff. Use the dpkg from alioth, shouldn't harm.

dpkg has:

       dpkg --print-architecture
              Print  target  architecture  (for example, "i386").  This
              option uses gcc.

       dpkg --print-gnu-build-architecture
              Print GNU version of target  architecture  (for  example,
              "i486").

       dpkg --print-installation-architecture
              Print host architecture for installation.

One of those is used when installing.

MfG
        Goswin