Re: [PATCH 3/4] Makefile: lld: tell clang to use lld

[Nick Desaulniers]

On Mon, Feb 11, 2019 at 7:33 AM Masahiro Yamada
<yamada.masahiro@xxxxxxxxxxxxx> wrote:
>
> On Sat, Feb 9, 2019 at 2:27 AM Nick Desaulniers <ndesaulniers@xxxxxxxxxx> wrote:
> >
> > On Thu, Feb 7, 2019 at 9:51 PM Nathan Chancellor
> > <natechancellor@xxxxxxxxx> wrote:
> > >
> > > On Thu, Feb 07, 2019 at 02:01:51PM -0800, ndesaulniers@xxxxxxxxxx wrote:
> > > > This is needed because clang doesn't select which linker to use based on
> > > > $LD but rather -fuse-ld=$(LD). This is problematic especially for
> > > > cc-ldoption, which checks for linker flag support via invoking the
> > > > compiler, rather than the linker.
>
> What do you mean by 'problematic' ?
>
> I see no build error in
> arch/arm64/kernel/vdso/Makefile, at least.
>
> Clang uses BFD linker by default,
> which may not match to the $(LD) passed in.
>
> Is this what you mean?

Right, when using a linker other than BFD, we want cc-ldoption to tell
us whether that linker supports a linker flag or not.

-- 
Thanks,
~Nick Desaulniers