[llvm-dev] [PSA] minimum toolchain update completed

[Hubert Tong via llvm-dev]

The follow-on patch at https://reviews.llvm.org/D58682 may affect users who
are on old versions of libstdc++ that slipped through the previous checks.
In particular, if you use newer bugfix releases of old versions of
libstdc++ with a new compiler, there is a chance that you did not encounter
the soft error that was previously implemented. Nevertheless, support for
your environment might be going away soon. The aforementioned patch will
improve detection for such environments.

-- HT

On Fri, Feb 8, 2019 at 1:15 PM JF Bastien via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hello compiler fans!
>
> As discussed in the RFC
> <http://lists.llvm.org/pipermail/llvm-dev/2019-January/129452.html>,
> LLVM’s cmake configuration now soft-errors if you use an older toolchain to
> build. The new minimums are:
>
> * Clang 3.5
> * Apple Clang 6.0
> * GCC 5.1
> * Visual Studio 2017
>
> You can opt-out of the soft-error with
> LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN. You’ll still want to update your
> toolchain because that soft-error will become a hard-error once we move
> away from C++11, and we would truly miss you. I will send another RFC for
> this migration away from C++11 at the end of March 2019.
>
> Happy compiling!
>
> JF
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> llvm-dev at lists.llvm.org
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>
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