Re: [Xen-devel] [BUG] Xen-4.8.0 efi/buildid.o: file not recognized/Ambiguous

["John L. Poole" <jlpoole56@xxxxxxxxx>]

On 12/9/2016 12:03 AM, Jan Beulich wrote:
> > > > On 08.12.16 at 20:35, <jlpoole56@xxxxxxxxx> wrote:
> > On 12/7/2016 8:51 AM, Jan Beulich wrote:
> > > > > > On 07.12.16 at 16:57, <jlpoole56@xxxxxxxxx> wrote:
> > > > I did the the following:
> > > >
> > > > wget https://downloads.xenproject.org/release/xen/4.8.0/xen-4.8.0.tar.gz
> > > > tar -xvzf xen-4.8.0.tar.gz
> > > > cd /usr/local/src/xen-4.8.0
> > > > ./configure
> > > >
> > > > The config.log is available at: http://napadata.net/paste/view/9e7faf3d
> > > >
> > > >
> > > > make
> > > >
> > > >       ...
> > > >        mv -f .efi.lds.d.new .efi.lds.d
> > > >        gcc -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer
> > > > -fno-strict-aliasing -Wdeclaration-after-statement -g -o efi/mkreloc
> > > > efi/mkreloc.c
> > > >        ld -mi386pep --subsystem=10 --image-base=0xffff82d080000000
> > > > --stack=0,0 --heap=0,0 --strip-debug --section-alignment=0x200000
> > > > --file-alignment=0x20 --major-image-version=4 --minor-image-version=8
> > > > --major-os-version=2 --minor-os-version=0 --major-subsystem-version=2
> > > > --minor-subsystem-version=0 --build-id=sha1 -T efi.lds -N prelink-efi.o
> > > > efi/relocs-dummy.o /usr/local/src/xen-4.8.0/xen/common/symbols-dummy.o
> > > > efi/buildid.o -o
> > > > /usr/local/src/xen-4.8.0/xen/.xen.efi.0xffff82d080000000.0 &&   ld
> > > > -mi386pep --subsystem=10 --image-base=0xffff82d0c0000000 --stack=0,0
> > > > --heap=0,0 --strip-debug --section-alignment=0x200000
> > > > --file-alignment=0x20 --major-image-version=4 --minor-image-version=8
> > > > --major-os-version=2 --minor-os-version=0 --major-subsystem-version=2
> > > > --minor-subsystem-version=0 --build-id=sha1 -T efi.lds -N prelink-efi.o
> > > > efi/relocs-dummy.o /usr/local/src/xen-4.8.0/xen/common/symbols-dummy.o
> > > > efi/buildid.o -o
> > > > /usr/local/src/xen-4.8.0/xen/.xen.efi.0xffff82d0c0000000.0 && :
> > > >        efi/buildid.o: file not recognized: File format is ambiguous
> > > >        efi/buildid.o: matching formats: coff-x86-64 pe-x86-64
> > > Hmm, at the first glance I'd call this a binutils bug: When talking
> > > about an object file, it's necessarily COFF and never PE. But I'd
> > > have to study their logic first to be certain. What binutils version
> > > are you using, and what's the target list e.g. objcopy lists at the
> > > end of its --help output?
> > I updated my binutils to 2.27 and I successfully completed "make". Thank
> > you.
> Good to know. Is that newer version similarly configured, or is
> your success simply because of the two conflicting target types
> not being there at the same time?
>
> Jan
Jan, you raised an interesting issue. Now when I try to compile
Xen 4.8.0 using Gentoo's portage command "emerge", I'm getting the error
I originally had, "File format is ambiguous", that brought me to this
list.  Thinking it was because I had both versions of binutils on
my system (slotted), I assumed Gentoo's emerge was failing because it
was invoking the earlier version of binutils.

So I removed the earlier version of binutils (2.25.1-r10)
leaving only binutils 2.27 in my environment. Still, when I went
to compile using Portage with:

     USE="efi"  emerge app-emulation/xen

I ran into the same problem: "File format is ambiguous".  This bug
is documented at:

   Gentoo  Bug 602052 - app-emulation/xen-4.8.0 Makefile:141: recipe 
for target fails
at

   https://bugs.gentoo.org/show_bug.cgi?id=602052

I then returned to /usr/local/src/xen-4.8.0 and executed:

    make world

which would clean and try again.  Now I've encountered the same error.

Previously, I had performed make, encountered the error and came to this
list.  I then added binutils 2.27 and did "make" again (no clean)
and the build succeeded.  So I am guessing that some files from
my first attempt at make were cached and on the second attempt (without 
clean) the problem
did not occur.  Now that I have done a "make world", I tried "make"
again to simulate the events up to my success at buildling the first time.
This time I was stopped at the same point: "File format is ambiguous".

Now I am at a loss to understand why I was able to build one time, but
not now.

The log files of the sessions are as follows:

Outside Gentoo Portage:
    "make world":
         http://napadata.net/paste/view/eb7c1d97

    "make" 2nd:
        http://napadata.net/paste/view/6463bc22

Gentoo:
    USE="efi"  emerge app-emulation/xen:
        http://napadata.net/paste/view/0fb9f9fd

I did use "-j9" to speed things up.

- John




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