(original) (raw)

As long as the new APIs are also supported on current MinGW-w64 compilers, I am for this switch.

On Fri, Jul 31, 2015 at 9:09 AM, Greg Bedwell <gregbedwell@gmail.com> wrote:
\> It sounds like there are no objections to jumping to Windows 7 as the
\> baseline. Is it worth getting a note added to the next LLVM weekly to give
\> the potential change a bit of a wider viewership before going ahead with it
\> or are we in a position to just do this now? If so, what are the actual
\> mechanics of the change, and who'd like to do it?

I think we should definitely get a note into the weekly update. We may
also want to get it into the 3.7 release notes as a warning to users.

I suspect we're in a position to make the switch now. As for the
mechanics, I'm less certain of all the places we have to touch, but
intuition suggests cmake and WindowsSupport.h.

\~Aaron

\> Thanks!
\> -Greg
\>
\> On 14 July 2015 at 06:55, NAKAMURA Takumi <geek4civic@gmail.com> wrote:
\>>
\>> +1\. We may focus Windows 7, aka NT6.1, as the baseline.
\>>
\>> 2015年7月14日(火) 7:48 Aaron Ballman <aaron@aaronballman.com>:
\>>>
\>>> On Mon, Jul 13, 2015 at 6:26 PM, Reid Kleckner <rnk@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.
\>>>
\>>> Agreed.
\>>>
\>>> > 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.
\>>>
\>>> I think it's reasonable to switch to Windows 7 at this point. Vista's
\>>> mainstream support ended in 2012 and only has extended support until
\>>> 2017, so it's sunsetting already.
\>>>
\>>> \~Aaron
\>>>
\>>> >
\>>> > On Mon, Jul 13, 2015 at 2:28 PM, Greg Bedwell <gregbedwell@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@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@cs.uiuc.edu
\>>> >>> \[mailto:llvmdev-bounces@cs.uiuc.edu\] 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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\>>> >>
\>>> >
\>>> >
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\>>
\>>
\>> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
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\>>
\>

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