Version of a framework created using the FRAMEWORK target property (e.g. A).
This property only affects OS X, as iOS doesn’t have versioned directory structure.
© 2000–2016 Kitware, Inc.
© 2000–2011 Insight Software Consortium
Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.7/prop_tgt/FRAMEWORK_VERSION.html