Blender Git Commit Log

CMake: Fix macOS SDK detection with latest Xcode and macOS

Happens on macOS 10.15.4 and Xcode 11.4.

The reason of failure is caused by following factors:

- xcodebuild reports full semantic macOS SDK version 10.15.4
- The actual SDK file path will only include major and minor part
of the version (10.15, MacOSX10.15.sdk)
- Previous CMake code of ours expected direct match between SDK
version and file path.

The solution is to make our detection code a bit more flexible and
additionally check for major.minor macOS SDK version in the path.