[cfe-dev] Adding -fuse-ld= support to clang

[Greg Fitzgerald]

Did this patch make it in?  Doesn't look like it.  What happened?

Thanks,
Greg

On Sun, May 19, 2013 at 6:07 AM, David Chisnall
<David.Chisnall at cl.cam.ac.uk> wrote:
> On 19 May 2013, at 08:19, Dimitry Andric <dimitry at andric.com> wrote:
>
>> Note, gcc does not look for ld-gold or ld-bfd, only for ld.gold and ld.bfd.
>
> I'm happy to remove this part.  GNU binutils (at least, from the FreeBSD port) used to install gold as ld-new, and I wanted to support that, but it may be that it's a legacy thing that we don't care about.
>
> On 19 May 2013, at 01:14, "C. Bergström" <cbergstrom at pathscale.com> wrote:
>
>> Fencepost comment, but does it ever make sense to respect LD in env?
>
> I pondered this.  Solaris has some crazy logic that causes ld to exec a different ld if it's set.  I'm hesitant to propose (more) environment variables that alter the compile semantics, because they make debugging problem reports very hard.
>
> On 19 May 2013, at 01:02, Justin Bogner <mail at justinbogner.com> wrote:
>
>> David Chisnall <David.Chisnall at cl.cam.ac.uk> writes:
>>> +    // Fall through and run the system linker - we could do a hard error here,
>>> +    // but we may as well try and see if it works.
>>
>> I think it's better to have an error here. As is, if someone says to
>> use a particular linker, but it's not available, we may use a different
>> linker. In some cases, this is fine: we're able to link, so what's the
>> problem? I'm concerned that this will make certain problems hard to
>> debug, where we expect to use  particular linker, but some path problem
>> or the like leads to using another.
>>
>> Is there an advantage to falling back to the system linker when somebody
>> explicitly asks for a different one?
>
> I don't have strong feelings here.  We report the error anyway, so I don't object to making it a hard failure.
>
> David
>
>
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