Build Warning on Windows with Clang due to -Wundef Flag

[KlassenH]

Describe the issue

Using the Clang compiler on Windows via Visual Studio to build the form produces these warnings:

...\build\x64-debug\_deps\googletest-src\googletest\include\gtest\internal\gtest-port.h(830,5): warning GC893BB5A: 'GTEST_LINKED_AS_SHARED_LIBRARY' is not defined, evaluates to 0 [-Wundef]
  #if GTEST_LINKED_AS_SHARED_LIBRARY
      ^
...\build\x64-debug\_deps\googletest-src\googletest\include\gtest\internal\gtest-port.h(832,7): warning G3FA67CA8: 'GTEST_CREATE_SHARED_LIBRARY' is not defined, evaluates to 0 [-Wundef]
  
  #elif GTEST_CREATE_SHARED_LIBRARY
  
        ^

Steps to reproduce the problem

CMakeLists.txt

What version of GoogleTest are you using?

f8d7d77

What operating system and version are you using?

Windows 11

What compiler and version are you using?

clang version 16.0.5
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\Llvm\x64\bin

What build system are you using?

cmake version 3.26.4-msvc4

Additional context

No response