RFR: JDK-8285730: unify _WIN32_WINNT settings
Phil Race
prr at openjdk.java.net
Wed Apr 27 17:56:51 UTC 2022
On Wed, 27 Apr 2022 14:57:41 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:
> Currently we set _WIN32_WINNT at various places in the codebase; this is used to target a minimum Windows version we want to support. See also for more detailled information :
> https://docs.microsoft.com/en-us/windows/win32/winprog/using-the-windows-headers?redirectedfrom=MSDN#setting-winver-or-_win32_winnt
> Macros for Conditional Declarations
> "Certain functions that depend on a particular version of Windows are declared using conditional code. This enables you to use the compiler to detect whether your application uses functions that are not supported on its target version(s) of Windows."
>
> However currently we have quite a lot of differing settings of _WIN32_WINNT in the codebase ; setting _WIN32_WINNT to 0x0601 (Windows 7) where possible would make sense because we have this setting already at java_props_md.c (so targeting older Windows versions at other places is most likely not useful).
This is OK by me, but I wonder if the build folks might want to think about this and whether it should be centralised somehow
since it seems odd to mandate different versions of windows in different places.
-------------
PR: https://git.openjdk.java.net/jdk/pull/8428
More information about the nio-dev
mailing list