Step 8 - build The build target will actually build the port. $ make build ===> Building for iodine-0.4.0 OS is OPENBSD, arch is i386 CC iodine.c CC tun.c tun.c: In function `tun_setip': tun.c:194: warning: ISO C89 forbids mixed declarations and code CC dns.c CC read.c CC encoding.c CC login.c CC base32.c CC md5.c CC common.c LD ../bin/iodine CC iodined.c CC user.c LD ../bin/iodined $ Watch the output to catch errors and warnings.