There are a couple of ways to enable the license.
But it must be known where the actual license file is located in
your file system.
a ) set
LM_LICENSE_FILE "/usr/licenses/synopsys/license_file"
b) setenv
LM_LICENSE_FILE = "28000@license-ab-nl"
OR it may be that more license file needs to be combined:
The License file will contain the following KeyWord for
coreAssembler
DWC-coreAssembler
The following KeyWord for DW Library AMBA IPs DWC-AMBA-Fabric-Source
The following KeyWord For AMBA VIPs (Though this will not be needed
for RTL design) DesignWare-AMBA-VIP