macos: platform SDK 14?

[Thomas Klausner <wiz%NetBSD.org@localhost>]

Hi!

In

https://reports.pkgci.org/Darwin/12.3/arm64/20250620.2239/qt6-qtbase-6.8.3nb3/configure.log

I found

  Qt requires at least version 14 of the platform SDK, you're building
  against version 12.3.  Please upgrade.  You can turn this error into a
  warning by configuring with -DQT_FORCE_WARN_APPLE_SDK_AND_XCODE_CHECK=ON,
  but the build will likely fail.  Use at your own risk.

Is there a pkgsrc way to set this?
 Thomas