CXXSTD=c++11

[Warner Losh]

> On Mar 24, 2016, at 4:36 PM, Bryan Drewery <bdrewery at freebsd.org> wrote:
> 
> Is there any problem with forcing -std=c++11 for all CXX/LIB_CXX builds
> now?  We do this when using an external GCC since it doesn't default to
> the c++11 standard quite yet.  As far as I understand, we require c++11
> to build clang/libc++.
> 
> It seems to be the problem at
> https://lists.freebsd.org/pipermail/freebsd-toolchain/2015-October/001757.html
> which I've fixed in an upcoming commit to properly pass -std=c++11 to
> the lib32 build in CXXFLAGS.

Wouldn’t that break the spark and mips builds if we did it always? They are the
last stragglers to not have a working, fully vetted clang in the tree.

Warner

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