[llvm] r191670 - Enable building LTO on WIN32.

[Greg_Bedwell at sn.scee.net]

> > I'm intrigued by the fact that it is calling link.exe when building
> > LTO_static if I'm reading it correctly.  For all my configs it calls
> > lib.exe for LTO.lib and link.exe for LTO.dll.  I will continue to
> > investigate tomorrow.

> Yes, my failure happened when using ninja.

It turns out that the mystery was just too deep for me to wait until 
tomorrow to resume my investigations.

I have been able to reproduce the failure when using Ninja.  When using 
Visual Studio directly it works correctly which explains why I didn't 
catch it first.  Hopefully now I've got the failure reproduced I can 
figure out what's going wrong and resubmit a fixed version.  Thanks Rafael 
and Timur for your help here.  I really appreciate it!

Greg Bedwell
http://www.snsys.com


Timur Iskhodzhanov <timurrrr at google.com> wrote on 30/09/2013 18:42:46:

> From: Timur Iskhodzhanov <timurrrr at google.com>
> To: Greg_Bedwell at sn.scee.net
> Cc: Rafael Espíndola <rafael.espindola at gmail.com>, llvm-commits 
> <llvm-commits at cs.uiuc.edu>
> Date: 30/09/2013 18:43
> Subject: Re: [llvm] r191670 - Enable building LTO on WIN32.
> 
> Yes, my failure happened when using ninja.
> 
> 2013/9/30  <Greg_Bedwell at sn.scee.net>:
> >> I reverted it for now since it was also failing on the bots:
> >>
> >> http://bb.pgr.jp/builders/ninja-clang-i686-msc17-R/builds/5166/
> >> steps/compile/logs/stdio
> >
> > Thanks.  I'm still trying to reproduce any failure here as it builds
> > perfectly out of the box on all the configs I have tried. :-\
> > The only obvious difference I can see is that I am building through 
devenv
> > whereas the bot is using ninja (I didn't realise that this was an 
option
> > until just now or I would have made sure to test it - sorry).
> >
> > I'm intrigued by the fact that it is calling link.exe when building
> > LTO_static if I'm reading it correctly.  For all my configs it calls
> > lib.exe for LTO.lib and link.exe for LTO.dll.  I will continue to
> > investigate tomorrow.
> >
> > Thanks
> >
> > -Greg
> >
> > Rafael Espíndola <rafael.espindola at gmail.com> wrote on 30/09/2013
> > 17:36:55:
> >
> >> From: Rafael Espíndola <rafael.espindola at gmail.com>
> >> To: Greg_Bedwell at sn.scee.net
> >> Cc: llvm-commits <llvm-commits at cs.uiuc.edu>, Timur Iskhodzhanov
> >> <timurrrr at google.com>
> >> Date: 30/09/2013 17:36
> >> Subject: Re: [llvm] r191670 - Enable building LTO on WIN32.
> >>
> >> On 30 September 2013 11:48,  <Greg_Bedwell at sn.scee.net> wrote:
> >> >> > I'm observing a build failure since this change:
> >> >>
> >> >> Greg, can you take a look?
> >> >>
> >> >
> >> > Looking now... Sorry for the inconvenience.
> >>
> >> I reverted it for now since it was also failing on the bots:
> >>
> >> http://bb.pgr.jp/builders/ninja-clang-i686-msc17-R/builds/5166/
> >> steps/compile/logs/stdio
> >>
> >> Cheers,
> >> Rafael
> >
> >
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