When using ecl that has been built with msvc, the code in sbcl.lisp

  #-:wsock

  (ffi:clines

   "#include <errno.h>"

   "#include <sys/socket.h>")

  #+:wsock

  (ffi:clines

   "#ifndef FD_SETSIZE"

   "#define FD_SETSIZE 1024"

   "#endif"

   "#include <winsock2.h>")

  (ffi:clines

   "#include <sys/time.h>"

   "#include <ecl/ecl-inl.h>"

)

Doesn’t build because sys/time is not available in msvc. What header should I include instead?