[cfe-dev] [llvm-dev] Fwd: Raising CMake minimum version to 3.4.3

[Pavel Labath via cfe-dev]

Adding lldb-dev to the loop. I don't think there should be major
issues there as lldb supports a strict subset targets, just making
sure everyone is aware of the plans.

Our team manages a couple of lldb buildbots still using cmake 2.8.
We'll get started on upgrading them though.

pl

On 5 May 2016 at 01:08, Galina Kistanova via cfe-dev
<cfe-dev at lists.llvm.org> wrote:
> This sounds good to me.
> I have planned the update.
>
> Thanks
>
> Galina
>
> On Wed, May 4, 2016 at 9:50 AM, Mike Edwards via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>>
>> Chris,
>> We have upgrade our bots (both internal and external) to CMake 3.5.2.  So
>> we are good to go.
>>
>> -Mike
>>
>> On Tue, May 3, 2016 at 12:29 PM, Chris Bieneman via llvm-dev
>> <llvm-dev at lists.llvm.org> wrote:
>>>
>>> Renato,
>>>
>>> This approach sounds great to me.
>>>
>>> Chris M let me know separately that GreenDragon is on CMake 3.5.
>>>
>>> I belive Galina and Takumi maintain the largest chunk of remaining public
>>> bots. Do either of you have any thoughts on this?
>>>
>>> Thanks,
>>> -Chris
>>>
>>> > On May 3, 2016, at 11:19 AM, Renato Golin <renato.golin at linaro.org>
>>> > wrote:
>>> >
>>> > On 3 May 2016 at 17:07, Chris Bieneman via cfe-dev
>>> > <cfe-dev at lists.llvm.org> wrote:
>>> >> Since there seems to be no strong objections remaining I’d like to
>>> >> propose the following timeline and process:
>>> >>
>>> >> 4/23 - I will send another follow-up email reminding everyone of this
>>> >> change and timeline
>>> >> 4/30 - I will send a final notice an hour before making the change to
>>> >> the LLVM, Clang, Compiler-RT, Clang-Tools-Extra, LibCXX, LibCXXABI and
>>> >> Test-Suite repos
>>> >>
>>> >> During the week of 4/30 I will revert as necessary if bots fail.
>>> >> Hopefully having the change permanently landed by the middle of the week.
>>> >>
>>> >> Does this sound agreeable to everyone?
>>> >
>>> > I'd like to propose a different approach. How about we do this the
>>> > other way around? Maybe we should try the "move first, fix later",
>>> > than the "break first, despair later".
>>> >
>>> > This week we (Linaro) have finished our buildbot migration, all of
>>> > them running on CMake 3.4.3. I'd like to see if other bot maintainers
>>> > could take the same effort before a certain date.
>>> >
>>> > So, we can still have the same dates (in May, of course), but with
>>> > different "labels":
>>> >
>>> > Soon, you send an announcement:
>>> > * Saying the consensus is to move to CMake 3.4.3 as well as a
>>> > compiled CMake for all platforms,
>>> > * That the technical reason is strong enough to do so, even if it
>>> > incurs more work to some people,
>>> > * That *ALL* bot owners should migrate as soon as possible (no later
>>> > than 30th).
>>> >
>>> > On 23rd, you send a reminder to the list informing all bot owners that
>>> > time is running out.
>>> > * If they can't do it, who could help them
>>> > * If they need push in the CMake community, or a new stable release,
>>> > it's better to have it now than then
>>> >
>>> > On 30th, you do the migration as you proposed.
>>> >
>>> > It's all the same, but with the difference that we're involving all
>>> > bot owners, and hopefully not having to revert too many times such a
>>> > troublesome change (CMake changes always mess up the bots anyway).
>>> >
>>> > Anyway, for ARM/AArch64, we're good to go.
>>> >
>>> > cheers,
>>> > --renato
>>>
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>>
>>
>>
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