3.16. Differences Between Red Hat Enterprise Linux 6 and 7

The RPM Package Manager in Red Hat Enterprise Linux 7 ships with a number of feature changes that are not available in the older version of the RPM Package Manager shipped with Red Hat Enterprise Linux 6.
This section provides more details on the changes that may affect you when building your Software Collection packages for both systems.
Differences in library support are detailed in Section 3.5.3, “Software Collection Library Support in Red Hat Enterprise Linux 7”. Differences in SELinux support are documented in Section 3.15.1, “SELinux Support in Red Hat Enterprise Linux 7”.

3.16.1. The %license Macro

The %license macro allows you to specify the license file to be installed by your package. The macro is only supported by the RPM Package Manager in Red Hat Enterprise Linux 7. When building your Software Collection package on both Red Hat Enterprise Linux 6 and 7, declare the %license macro for Red Hat Enterprise Linux 6 as follows: 
%{!?_licensedir:%global license %%doc}