[Bug 86432] llvm Unreal Elemental rendering regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #7 from Andy Furniss <adf.lists at gmail.com> ---
(In reply to Andy Furniss from comment #6)
> Created attachment 109694 [details]
> clang build fail with Tentative fix
> 
> I get a build fail with this - I build OK same tree without patch.
> 
> clang is roughly from same tree, though I deleted tools/clang when doing the
> bisect and haven't reinstated yet.

Never mind - I've upgraded GCC - for whatever reason it didn't care or error
initially even though I cleaned + git clean -dfx + git reset hard
origin/master.

Now I do it and it bails early in the configure -

We detected a missing feature in the standard C++ library that was known to be
missing in libstdc++4.6 and implemented in libstdc++4.7. There are numerous
C++11 problems with 4.6's library, and we don't support GCCs or libstdc++ older
than 4.7. You will need to update your system and ensure Clang uses the newer
standard library.

Which is confusing as I've just upgraded from gcc 4.8.3 to 4.9.2.

Maybe I need to try rebuilding llvm/clang with gcc.

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