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

Jim Rowan jmr at codeaurora.org
Fri Oct 31 13:04:55 PDT 2014


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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