Re: Heads-Up: early LTO debug to land, breaking Mach-O / [X]COFF

[JonY <10walls at gmail dot com>]

On 05/12/2017 09:24 AM, Richard Biener wrote:
> 
> This is a heads-up that I am in the process of implementing the last
> of Jasons review comments on the dwarf2out parts of early LTO debug
> support.  I hope to post final patches early next week after thoroughly
> re-testing everything.
> 
> Note that Mach-O and [X]COFF support in the simple-object machinery
> is still missing for the early LTO debug feature so I am going to
> break LTOing with DWARF debuginfo on Darwin and Windows (CCing
> maintainers).  Mach-O support has been worked on a bit by Iain
> and myself but the simple-object piece is still missing.
> A workaround is to use stabs on these targets with LTO.
> 
> DWARF part: https://gcc.gnu.org/ml/gcc-patches/2016-11/msg01023.html
> simple-object part: 
> https://gcc.gnu.org/ml/gcc-patches/2016-10/msg01733.html
> 
> both still apply with some fuzz.
> 
> Richard.
> 

AFAIK, LTO doesn't work well on Windows to begin with, if non-LTO modes
are unaffected, I have no issues with this.

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