Build version reporting

Collaboration diagram for Build version reporting:

Files
file	version.cc
	ns3::Version implementation
file	version.h
	class ns3::Version definition

Classes
class	ns3::Version
	Helper class providing functions to access various parts of the version string, as well as functions for composing short and long variants of the version string. More...

Detailed Description

Version information is pulled from the local git repository during the build process. If a git repository is not found, the build system will search for a file named version.cache under the src/core directory. The version.cache file must contain key/value pairs in the format key=value with one entry per line. The build system will use the data pulled from the git repository, or loaded from the version.cache file, to generate the file version-defines.h

The build will fail if a local git repository is not present and a version.cache file can not be found.