Re: quick question about dpkg-architecture

[Guillem Jover <guillem@debian.org>]

Hi!

On Mon, 2017-11-20 at 15:03:22 +0000, Sérgio Basto wrote:
> On Sun, 2017-08-06 at 04:36 +0100, Sérgio Basto wrote:
> > On Wed, 2017-08-02 at 01:15 +0200, Guillem Jover wrote:
> > > On Tue, 2017-08-01 at 13:01:55 +0100, Sérgio Basto wrote:
> > > > BTW if you are interested still failing on armv7 
> > > > [1] , I had report arm fail some months ago. The fail on arm is
> > > > because
> > > > dpkg-architecture -qDEB_BUILD_GNU_TYPE and dpkg-architecture
> > > > -qDEB_HOST_GNU_TYPE have different results [2], any suggestion ?
> > > > 
> > > > [2]
> > > > + dpkg-architecture -qDEB_BUILD_GNU_TYPE
> > > > arm-linux-gnu
> > > > + dpkg-architecture -qDEB_HOST_GNU_TYPE
> > > > arm-linux-gnueabi
> > > 
> > > This looks indeed fishy. What's the output of:
> > > 
> > >   % dpkg --print-architecture
> > >   % $CC -dumpmachine

Sorry, it seems I lost track of the previous mail, and never replied
before. :(

> > I could get a test in arm yet , but on ppc64le (which failed) I got :
> > 
> > + cd debhelper
> > + dpkg-architecture -qDEB_BUILD_GNU_TYPE
> > powerpc64le-linux-gnu
> > + dpkg-architecture -qDEB_HOST_GNU_TYPE
> > dpkg-architecture: warning: unknown CC system type ppc64le-redhat-
> > linux, falling back to default (native compilation)
> > powerpc64le-linux-gnu
> > + cc -dumpmachine
> > ppc64le-redhat-linux

That's because dpkg-architecture does not recognize ppc64(el|le|)
as a known GNU triplet. Even config.sub normalizes that to powerpc64:

  $ /usr/share/misc/config.sub ppc64le-redhat-linux
  powerpc64le-redhat-linux-gnu

> > but not failed in aarch64 with:
> > 
> > + cd debhelper
> > + dpkg-architecture -qDEB_BUILD_GNU_TYPE
> > aarch64-linux-gnu
> > + dpkg-architecture -qDEB_HOST_GNU_TYPE
> > aarch64-linux-gnu
> > + cc -dumpmachine
> > aarch64-redhat-linux
> 
> Fails in armv7 : 
> 
> + dpkg-architecture -qDEB_BUILD_GNU_TYPE
> arm-linux-gnu
> + dpkg-architecture -qDEB_HOST_GNU_TYPE
> arm-linux-gnueabi
> + dpkg --print-architecture
> arm
> + cc -dumpmachine
> armv7hl-redhat-linux-gnueabi

A similar problem here, well, worse because the arch the compiled dpkg
thinks it is built for has nothing to do with armv7! The arm arch is
the old non-EABI arch. The correct arch here should be armel.

  $ dpkg-architecture -tarmv7hl-redhat-linux-gnueabi -qDEB_HOST_ARCH
  armel

So either the dpkg was built for the old ARM OABI, and the compiler is
for ARM EABI, or something was wrong during compilation?

Thanks,
Guillem