in addition to evas further requires GNU getopt, this is in the package 
libgnugetopt, available through the ports collection

as root:
	cd /usr/ports/devel/libgnugetopt && make install

the Makefiles also expect GNU make, so install the gmake package
	cd /usr/ports/devel/gmake && make install

and use that to build further

	gmake -C plugins
	gmake