[llvm-dev] Using C++14 code in LLVM

[Mehdi Amini via llvm-dev]

> On Oct 4, 2016, at 2:10 PM, Reid Kleckner <rnk at google.com> wrote:
> 
> On Tue, Oct 4, 2016 at 11:58 AM, Mehdi Amini <mehdi.amini at apple.com <mailto:mehdi.amini at apple.com>> wrote:
> 
>> On Oct 4, 2016, at 8:40 AM, Reid Kleckner via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
>> 
>> On Tue, Oct 4, 2016 at 8:29 AM, Zachary Turner <zturner at google.com <mailto:zturner at google.com>> wrote:
>> I ask because many of these LTS distros are notoriously slow at updating their packages. While some people may think C++14 doesn't provide enough bang for the buck to justify bumping to GCC 4.9, C++17 definitely does. But at that point we're going to be talking about GCC 6.1 or 6.2, which is going to be significantly harder unless we want to wait 5-7 years, and I suspect people won't.
>> 
>> If by "notoriously slow" you mean they don't bump their toolchain versions at all, then yeah. We just wait until the LTS release is at end-of-life before dropping it.
> 
> That’s the first time I read about this policy: we support every linux LTS distribution till their end-of-life? Only Ubuntu? Do you have a pointer where it is documented / discussed?
> (Note that Ubuntu LTS is 5 years AFAIK.)
> 
> Sorry, I didn't mean to refer to the LTS support lifetime. I just meant we support the last LTS until we can reasonably expect users to have upgraded to the new one. If there's an LTS release every two years, then we want to keep supporting them for at least three years to give people a year to upgrade.

OK, got it.

Thanks for clarifying!

Mehdi

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