[LLVMdev] Build-bot host compiler upgrades and C++11!

Chandler Carruth
Mon, 13 Jan 2014 22:00:30 -0000

FYI, this is happening now-ish!


On Tue, Jan 7, 2014 at 1:40 AM, Chandler Carruth <chandlerc at
gmail.com>wrote:

> Greetings, starting a new thread and CC-ing all the folks I could think of
> that are likely running bots for LLVM. If I've missed any, sorry,
please
> add them.
>
> As lots of folks have been mentioning, it's time to switch LLVM (and
most
> subprojects) to use C++11. The first step is establishing a new baseline of
> compiler versions that are supported[1]:
>
> MSVC 2012
> GCC 4.7
> Clang 3.1
>
> If you are helping to keep our build bot infrastructure running and
> up-to-date, please check the host compiler versions and reply here if
> you're going to have trouble upgrading. My rough plan based on chatting
> with some folks is to submit checks to cmake and configure on Monday to
> produce an error on older toolchains without some flag to force old
> toolchain support.
>
> So reply to this thread if you need more time, or if all your bots are
> ready-to-go! Thanks a bunch!
> -Chandler
>
>
> [1]: Most of these compilers were available in the middle (June) of 2012,
> and based on the planned 3.5 release time frame of the middle of 2014, that
> will mean a roughly two year spread of compiler releases. MSVC 2012 was
> later, but the community seems comfortable with requiring the upgrade.
> Also, these versions include very significant improvements that make
> adopting C++11 features much more viable. This was discussed at some length
> on the mailing list, and I'm not really trying to re-open debate here,
just
> reminding folks. =]
>
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