Bug#797917: Actually this bug makes clang not so useful

[Gianfranco Costamagna]

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Hi Danny,

> If we could make those "Dual-ABI compile flags" the default on 
> gcc-compiled libraries, clang upstream should have enough time 
> implementing [abi:cxx11] and remain usable in Debian.


gcc had the dual ABI enabled.

but it got disable in the experimental/unstable uploads:
https://packages.qa.debian.org/g/gcc-5/news/20150616T170514Z.html

I guess clang is not useful for cxx11 projects until llvm folks finds
a way to make it use the new ABI.

sorry, but I don't see how to fix this, for sure enabling again the
dual ABI in gcc (not even sure if it will work), is a no-go, because
I'm pretty sure it will trigger another painful transition.

I'm sorry but we should live with this, until llvm folks implemtents
the new code.

Sylvestre, doko, what is your opinion?

cheers,

G.
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