llvm dev - Feb 2016 - lld as ld replacement on Windows (with MinGW)

Hi,

I couldn’t find a lld specific list so I hope this is the correct place for
lld questions.

I would like to build a llvm/clang/libcxx based toolchain for Windows using
the MinGW runtime. Since the MinGW runtime kind of expects to be built by
gcc I figured the easiest way forward would be to use lld in ld mode.
However, it seems that lld cannot produce windows executables while working
in “ld mode”.
lld -flavor gnu -m i386pe
error: unsupported emulation 'i386pe’.

Is support for i386pe in ld mode something that is on the road map for lld
or should I just give up this route?

In general I would very much appreciate  if anyone has any pointers for how
to build a llvm/clang/libxx toolchain for Windows using MinGW runtime (the
end goal being to have a toolchain free from GNU tools and without the
dependency on Visual Studio).

Cheers,
Otto
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This feature request has raised a few times since last year, and a few
patches were proposed, but no progress has been made so far. So we don't
know the answer. As the maintainer of the COFF support of LLD, I'm not
against supporting MinGW, but the proposed patches looked a bit too
intrusive to me, so they were not merged. If there's anyone who's
interested in supporting MinGW, I'm happy to help.

On Mon, Feb 29, 2016 at 8:33 AM, Otto Tronarp via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> Hi,
>
> I couldn’t find a lld specific list so I hope this is the correct place
> for lld questions.
>
> I would like to build a llvm/clang/libcxx based toolchain for Windows
> using the MinGW runtime. Since the MinGW runtime kind of expects to be
> built by gcc I figured the easiest way forward would be to use lld in ld
> mode. However, it seems that lld cannot produce windows executables while
> working in “ld mode”.
> lld -flavor gnu -m i386pe
> error: unsupported emulation 'i386pe’.
>
> Is support for i386pe in ld mode something that is on the road map for lld
> or should I just give up this route?
>
> In general I would very much appreciate  if anyone has any pointers for
> how to build a llvm/clang/libxx toolchain for Windows using MinGW runtime
> (the end goal being to have a toolchain free from GNU tools and without the
> dependency on Visual Studio).
>
> Cheers,
> Otto
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
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Thanks for the information and good to know that patches are welcome. I
don't need it desperately enough (yet) to step up to the challenge.

Otto

On Mon, Feb 29, 2016 at 7:10 PM, Rui Ueyama <ruiu at google.com> wrote:
> This feature request has raised a few times since last year, and a few
> patches were proposed, but no progress has been made so far. So we
don't
> know the answer. As the maintainer of the COFF support of LLD, I'm not
> against supporting MinGW, but the proposed patches looked a bit too
> intrusive to me, so they were not merged. If there's anyone who's
> interested in supporting MinGW, I'm happy to help.
>
> On Mon, Feb 29, 2016 at 8:33 AM, Otto Tronarp via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Hi,
>>
>> I couldn’t find a lld specific list so I hope this is the correct place
>> for lld questions.
>>
>> I would like to build a llvm/clang/libcxx based toolchain for Windows
>> using the MinGW runtime. Since the MinGW runtime kind of expects to be
>> built by gcc I figured the easiest way forward would be to use lld in
ld
>> mode. However, it seems that lld cannot produce windows executables
while
>> working in “ld mode”.
>> lld -flavor gnu -m i386pe
>> error: unsupported emulation 'i386pe’.
>>
>> Is support for i386pe in ld mode something that is on the road map for
>> lld or should I just give up this route?
>>
>> In general I would very much appreciate  if anyone has any pointers for
>> how to build a llvm/clang/libxx toolchain for Windows using MinGW
runtime
>> (the end goal being to have a toolchain free from GNU tools and without
the
>> dependency on Visual Studio).
>>
>> Cheers,
>> Otto
>>
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
>>
>
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