VS: Add option for custom Win10 SDK version maximum

Since commit 83ddc4d289 (VS: Do not select a Windows SDK too high for
current VS version, 2017-08-07, v3.13.0-rc1~72^2~2) we enforce a maximum
SDK version for the VS 2015 generator.  The blog post linked in the
original commit is no longer available, but it can be seen here:

* https://web.archive.org/web/20190108032520/https://blogs.msdn.microsoft.com/chuckw/2018/10/02/windows-10-october-2018-update/

In particular, it states:

> VS 2015 Users: The Windows 10 SDK (15063, 16299, 17134, 17763)
> is officially only supported for VS 2017.

However, in some circumstances a higher version can be used.

Add a `CMAKE_VS_WINDOWS_TARGET_PLATFORM_VERSION_MAXIMUM` to override the
generator's default maximum SDK version.

Fixes: #20633

1 files changed, 2 insertions, 2 deletions

diff --git a/Source/cmGlobalVisualStudio14Generator.h b/Source/cmGlobalVisualStudio14Generator.h
index 39353f2..2b9a649 100644
--- a/Source/cmGlobalVisualStudio14Generator.h
+++ b/Source/cmGlobalVisualStudio14Generator.h
@@ -43,7 +43,7 @@ protected:
 
   // Used to make sure that the Windows 10 SDK selected can work with the
   // version of the toolset.
-  virtual std::string GetWindows10SDKMaxVersion() const;
+  virtual std::string GetWindows10SDKMaxVersion(cmMakefile* mf) const;
 
   virtual bool SelectWindows10SDK(cmMakefile* mf, bool required);
 
@@ -54,7 +54,7 @@ protected:
   // installed on the machine.
   bool IsWindowsDesktopToolsetInstalled() const override;
 
-  std::string GetWindows10SDKVersion();
+  std::string GetWindows10SDKVersion(cmMakefile* mf);
 
 private:
   class Factory;