d376b149_der_Guide_9_2_de___PC_BSD_Wiki_bi_conf_Variables__Tabellen_1__Description
[Variable] PBI_MAKEOPTS= [Description] 
optional; set this to the options that you want saved to make.conf for the port building process (e.g. WITH_CUPS=YES)
PBI Module Builder Guide/9.2/de - PC-BSD Wiki