Hello everyone, I have added a new macro to the XrdVersion.hh. It stores the numeric version number of a release to enable the external clients to do conditional compilation: #if XrdVNUMBER > 30100 foo #else bar #endif The format is: xyyzz, where x is a major number, yy minor number and zz a bugfix number. For non-release code the value will be 0. Cheers, Lukasz