Home Original page

linking EFI binary from ELF objects and archives

Jan Beulich jbeulich@suse.com
Wed Sep 9 12:56:08 GMT 2020 
On 09.09.2020 14:49, Nick Clifton wrote:
>> in PR 22369 you said
>>
>> "I do wonder if we should issue an error message when attempting to
>>  perform cross-format links like this.  Although in theory of course
>>  the library could contain both COFF format objects and ELF format
>>  objects.  Which makes things a little more complicated.  Hmm, maybe
>>  I need to think about this."
>>
>> Am I correctly understanding that while linking EFI binaries (i.e.
>> PE32+) from ELF _objects_ works,
> 
> Actually I do not think that this does work.

Why? We've been using it successfully in the Xen project to build
Xen as an EFI binary, alongside a traditional ELF one, and both
from mostly the same object files.

>  The PR was for a case
> where this was attempted, and a seg-fault was generated.  But I
> think that even if the seg-fault had not happened the link still 
> would have failed.

It was my understanding that the issue at the time was with an
archive containing ELF objects, not an individual object.

Apart from this - any word on my question on "ld -r" when it comes
to archives?

Jan
More information about the Binutils mailing list