Mine

sockets.o: tcpip/lib/api/sockets.c tcpip/lib/include/lwip/opt.h \
  tcpip/config/lwipopts.h tcpip/lib/include/lwip/debug.h \
  tcpip/config/include/arch/cc.h ../source/termio.h ../_general/cdef.h \
  ../_general/tc_config.h ../source/tpu.h ../source/up68332.h \
  ../source/kernel.h ../source/ker_evnt.h ../source/toollib.h \
  ../source/toolcust.h ../source/v24.h ../source/v24_cust.h \
  ../source/../source/debug.h ../_general/cdef.h \
  tcpip/lib/include/lwip/api.h tcpip/lib/include/lwip/opt.h \
  tcpip/lib/include/lwip/pbuf.h tcpip/lib/include/lwip/sys.h \
  tcpip/config/include/arch/sys_arch.h ../_general/cdef.h \
  ../source/kernel.h ../source/ker_sema.h ../source/ker_evnt.h \
  ../source/pipe.h ../source/ker_sema.h ../source/debug.h \
  tcpip/lib/include/ipv4/lwip/ip.h tcpip/lib/include/lwip/arch.h \
  tcpip/lib/include/lwip/def.h tcpip/lib/include/lwip/pbuf.h \
  tcpip/lib/include/ipv4/lwip/ip_addr.h tcpip/lib/include/lwip/err.h \
  tcpip/lib/include/lwip/raw.h tcpip/lib/include/lwip/arch.h \
  tcpip/lib/include/ipv4/lwip/inet.h tcpip/lib/include/lwip/opt.h \
  tcpip/lib/include/lwip/udp.h tcpip/lib/include/lwip/tcp.h \
  tcpip/lib/include/lwip/mem.h tcpip/lib/include/ipv4/lwip/icmp.h \
  tcpip/lib/include/lwip/netif.h tcpip/lib/include/lwip/err.h \
  tcpip/lib/include/ipv4/lwip/ip_addr.h tcpip/lib/include/lwip/arch.h \
  tcpip/lib/include/lwip/sys.h tcpip/lib/include/lwip/sockets.h