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

[JF Bastien via llvm-dev]

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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