[llvm-dev] [lldb-dev] Trying out lld to link windows binaries (using msvc as a compiler)

Zachary Turner via llvm-dev llvm-dev at lists.llvm.org
Fri Jan 26 11:32:24 PST 2018

In general, we should be able to accept any MSVC .obj file to LLD.  At the
very least, we're not aware of any cases that don't work.

Does your MSVC .obj file link fine before you add the .debug$H?

On Fri, Jan 26, 2018 at 11:23 AM Leonardo Santagada <santagada at gmail.com>

> Okay, apparently coff2yaml and yaml2coff are not in a great place as they
> both don't deal well with the fact that you can have overlapping sections,
> which seems to be what clang-cl produces (the .data section points to the
> same place as a later section). Which is not a big big problem for me
> particularly because msvc doesn't even generate .data sections in .obj.
> I'm trying to put support for .bss sections in both coff2yaml and
> yaml2coff... but I still can link just fine with my transformations
> clang-cl generated files... what does give me problems is msvc .obj files.
> Have you tried to link one of these?
> On Fri, Jan 26, 2018 at 8:05 PM, Leonardo Santagada <santagada at gmail.com>
> wrote:
>> yeah, apparently .bss has a flag of unitialized data that is not being
>> respected on the layout of the coff files (it should skip those sections)
>> but I dunno what to do with .data as it doesn't have a size.
>> (resending as apparently my pastes generated a ton of hidden html data
>> and this message hit the mailinglist limit of 100k)
>> --
>> Leonardo Santagada
> --
> Leonardo Santagada
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