[llvm-dev] [lld] Flavour option purpose

Rui Ueyama via llvm-dev
Thu, 26 Oct 2017 21:30:42 -0000

Martell recently added "ld64.lld" as a name for the Darwin driver.

As to why there's no driver that provides a unified command line arguments,
I can't speak for other people. But no one seems to have been interested in
it enough to actually invent and implement a set of unified command line
arguments.

On Thu, Oct 26, 2017 at 2:20 PM, N <scandium at me.com> wrote:

> > I think using ld.lld or lld-link is preferred way over "lld
-flavor gnu"
> or "lld -flavor link".
>
> -flavor seems to be still actively used in Clang… By the the way, there
> seems to be no special
> command name for Darwin targets, so ld.lld (incorrectly) invokes the ELF
> linker there
> (see https://bugs.llvm.org/show_bug.cgi?id=34792#c1)
>
> Regardless, I would be interested in hearing the answer to the rest of the
> questions.
>
> > On 26 Oct 2017, at 23:10, Rui Ueyama <ruiu at google.com> wrote:
> >
> > The -flavor option exists mostly for historical reasons. I think using
> ld.lld or lld-link is preferred way over "lld -flavor gnu" or
"lld -flavor
> link".
> >
> > On Thu, Oct 26, 2017 at 2:06 PM, N via llvm-dev <llvm-dev at
lists.llvm.org>
> wrote:
> > Hi all,
> >
> > According to lld/docs/Driver.rst, Flavor command line option
determines
> the style of lld command-line interface when invoked.
> >
> > However, it looks like this option also determines the set of
supported
> targets we are linking for. For example, lld -flavor gnu
> > cannot link mach-o binaries, and could not link PE binaries either
> (well, not until rL312926).
> >
> > Is this really intended by the design of lld? It looks the flavours
are
> merely legacy compatibility shims, but then why is there no
> > universal lld driver that is able to link binary for any platform
using
> a unified CLI?
> > _______________________________________________
> > LLVM Developers mailing list
> > llvm-dev at lists.llvm.org
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
> >
>
>
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