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

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> 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?

Jan


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