PROJECT-NAME_VERSION_MAJOR
<PROJECT-NAME>_VERSION_MAJOR
First version number component of the <PROJECT-NAME>_VERSION
variable as set by the project()
command.
© 2000–2017 Kitware, Inc. and Contributors
Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.7/variable/PROJECT-NAME_VERSION_MAJOR.html