if (${DHCPV4_SUPPORT})
add_definitions(-DDHCPV4_SUPPORT)
set(EXT_SRC ${EXT_SRC} src/dhcpv4.c)
-endif(${DHCPV4})
+endif(${DHCPV4_SUPPORT})
add_executable(odhcpd src/odhcpd.c src/config.c src/router.c src/dhcpv6.c src/ndp.c src/dhcpv6-ia.c ${EXT_SRC})
target_link_libraries(odhcpd resolv ubox uci ${libnl} ${EXT_LINK})