Build failed

[envzhu]

Hello.
I am trying to build esmon on CentOS 7. /etc/esmon_build.conf is empty.

But executing ./esmon_build outputs an error:

cp: cannot stat 'xml_definition/RPMS/noarch/xml_definition-2.2-1.g%{?rev}.noarch.rpm': No such file or directory 

It seems to be something wrong with the process of converting %{?rev}.