[llvm-dev] (Thin)LTO llvm build

[Teresa Johnson via llvm-dev]

Aha - finally reproduced! The difference is using ld.bfd not ld.gold. With
that I get the same failure (using 3.9 to build 3.9 sources):

/usr/local/google/home/tejohnson/binutils_build/install/bin/ld:
bin/lldb-3.9.1: hidden symbol `__morestack' in
/usr/lib/gcc/x86_64-linux-gnu/4.8/libgcc.a(morestack.o) is referenced by DSO
/usr/local/google/home/tejohnson/binutils_build/install/bin/ld: final link
failed: Bad value
clang-3.9: error: linker command failed with exit code 1 (use -v to see
invocation)
ninja: build stopped: subcommand failed.

I am not sure what the official support story is for LLVMgold.so and
ld.bfd. As mentioned earlier, the LLVM site indicates it should use the
gold linker. Can you use that while I try to figure out whether this is
something that should be supported/working?

Thanks,
Teresa

On Mon, Oct 3, 2016 at 9:56 AM, Carsten Mattner <carstenmattner at gmail.com>
wrote:

> On Mon, Oct 3, 2016 at 3:50 PM, Teresa Johnson <tejohnson at google.com>
> wrote:
> >
> > On Sun, Oct 2, 2016 at 4:02 AM, Carsten Mattner <
> carstenmattner at gmail.com> wrote:
> >>
> >> On Sun, Oct 2, 2016 at 6:41 AM, Teresa Johnson <tejohnson at google.com>
> wrote:
> > >
> > > > I use trunk, but it depends on how close to the bleeding edge you
> > > > are comfortable with. But like I said, I also tried bootstrapping
> > > > with 3.9 (both trunk as well as 3.9 sources) and couldn't reproduce.
> >>
> >> Hmm, so you're saying neither fails for you, right?
> >
> > Yes
>
> Okay. Do you mind focusing on the 3.9 branch? It's less of a moving target
> and lends itself more to figuring out what's failing for me.
>
> As soon as I get around to it, I'll send you my full configure and build
> steps as a shell script. Need to streamline it.
>



-- 
Teresa Johnson |  Software Engineer |  tejohnson at google.com |  408-460-2413
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