[llvm-dev] [LLVMdev] RFC: Drop support running LLVM on Windows XP

[Hans Wennborg via llvm-dev]

On Mon, Oct 5, 2015 at 11:19 AM, Aaron Ballman <aaron at aaronballman.com> wrote:
> On Mon, Oct 5, 2015 at 2:18 PM, Hans Wennborg via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>> (cc'ing the new list address; sorry for the duplicate)
>>
>> On Mon, Oct 5, 2015 at 11:14 AM, Hans Wennborg <hans at chromium.org> wrote:
>>> Did we conclude that we've dropped Win XP support now?
>
> I believe we have, yes.

Release notes updated in r249332.

Thanks,
Hans


>>> On Mon, Jul 13, 2015 at 3:26 PM, Reid Kleckner <rnk at google.com> wrote:
>>>> Nobody objected to raising the bar, so I think we can go ahead and do this.
>>>> Keeping the XP support until 3.7 ships seems reasonable as it's less
>>>> disruptive.
>>>>
>>>> Should we consider bypassing Vista and jumping to 7 as the lowest supported
>>>> Windows version as David suggested? I think we should document 7 as the
>>>> recommended baseline. After we start using some of the newer APIs, we can
>>>> see if users complain and evaluate the burden of maintaining Vista support
>>>> at that time.
>>>>
>>>> On Mon, Jul 13, 2015 at 2:28 PM, Greg Bedwell <gregbedwell at gmail.com> wrote:
>>>>>
>>>>> Hi all,
>>>>>
>>>>> It looks like this conversation stalled.  I have a local patch that I'd
>>>>> like to send upstream (automatically generating Windows crash dumps on
>>>>> clang/LLVM crashes) that makes use of a Windows API function that requires
>>>>> _WIN32_WINNT set to 0x0600 at minimum so I'd like to restart the
>>>>> conversation!
>>>>>
>>>>> As there have so far been no objections that I've seen and we're branching
>>>>> imminently, it feels like a perfect time to make this change as soon as the
>>>>> release branch is taken, and adding a release note for 3.7 to the effect of
>>>>> it being the final version supporting XP.  I don't think there's been a
>>>>> clear conclusion on what we should raise it to though.
>>>>>
>>>>> Any thoughts on this?
>>>>>
>>>>> Thanks,
>>>>> -Greg
>>>>>
>>>>>
>>>>> On 31 October 2014 at 16:30, Robinson, Paul
>>>>> <Paul_Robinson at playstation.sony.com> wrote:
>>>>>>
>>>>>> We formally support our toolchain only on Windows 7 onward, so it's okay
>>>>>> with us.
>>>>>>
>>>>>> (Please make sure this goes in the release notes when you start doing
>>>>>> something not supported in XP and/or Vista.)
>>>>>>
>>>>>> --paulr
>>>>>>
>>>>>>
>>>>>>
>>>>>> From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On
>>>>>> Behalf Of Jim Rowan
>>>>>> Sent: Friday, October 31, 2014 1:05 PM
>>>>>> To: Reid Kleckner
>>>>>> Cc: LLVM Developers Mailing List
>>>>>> Subject: Re: [LLVMdev] RFC: Drop support running LLVM on Windows XP
>>>>>>
>>>>>>
>>>>>>
>>>>>> +1
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Oct 30, 2014, at 3:29 PM, Reid Kleckner wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>> I'd like to raise our baseline Windows system requirements to Vista,
>>>>>> dropping support for running LLVM on Windows XP. Microsoft dropped support
>>>>>> for XP half a year ago in April 2014.
>>>>>>
>>>>>>
>>>>>>
>>>>>> Our current status is that we require VS 2012 to build LLVM, and VS 2012
>>>>>> only runs on Vista+, but it has the ability produce binaries that run on XP.
>>>>>> During the C++11-pocalypse, users expressed interest in keeping this
>>>>>> working. I'm proposing that we drop support for this.
>>>>>>
>>>>>>
>>>>>>
>>>>>> Vista introduced a lot of handy system APIs that could significantly
>>>>>> simplify LLVM's Support library. For example, I'd really like to use the
>>>>>> blessed one-time initialization routines in this CL:
>>>>>>
>>>>>> http://reviews.llvm.org/D5922
>>>>>>
>>>>>>
>>>>>>
>>>>>> Vista also introduced a bunch of condition variable APIs that I know less
>>>>>> about, but that's another reason we might want to raise our base requirement
>>>>>> as people look into parallel LTO and codegen. It also seems likely that we
>>>>>> will want to use some of the new C++11 library features that are only
>>>>>> present in newer CRTs, which don't run on XP.
>>>>>>
>>>>>>
>>>>>>
>>>>>> Please respond if you have any objections. If there are no strong
>>>>>> objections, I think we can start using Vista+ APIs in a week or so. We can
>>>>>> still change our minds and revert stuff before the release if users feel
>>>>>> this is too short notice.
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