RFR: JDK-8285730: unify _WIN32_WINNT settings

Fri Apr 29 07:05:40 UTC 2022

On Fri, 29 Apr 2022 05:09:35 GMT, David Holmes <dholmes at openjdk.org> wrote:

> That only seems to be half of the issue though. If we are defining _WIN32_WINNT=0x0601 because the minimum required OS API support level is Windows 7, then don't we need a check that the build platform is also at least Windows 7?

Hi David,  on older OS than Windows 7 we wouldn't be able to build OJDK anyway currently. Our oldest VS we still support (see toolchain_microsoft.m4) is VS2017.  
VS2017 has the following system requirements 
https://docs.microsoft.com/en-us/visualstudio/releases/2017/vs2017-system-requirements-vs
see supported OS ,  there the oldest supported OS is Windows Server 2012 R2 and Windows 7 SP1. So on older than Win7 we would not even have a compiler anymore that passes configure.

-------------

PR: https://git.openjdk.java.net/jdk/pull/8428