function genkernel(modlistf,kname)
 local nk,f = "",io.open(modlistf,"rb")
 nk=nk.."_OSVERSION=\"PsychOS "..(kname or "unknown").."\"\n"
 nk=nk.."_BD=\""..os.date("%Y/%m/%d %H:%M %z").."\"\n"
 local c=f:read("*a")
 f:close()
 local n=1
 local function apfile(fp)
  local f=io.open(fp,"rb")
  if f then
   nk=nk..f:read("*a")
   f:close()
  end
 end
 for line in c:gmatch("[^\r\n]+") do
  local tw = {}
  for w in line:gmatch("%S+") do
   tw[#tw+1] = w
  end
  n=n+1
  if tw[1] == "fwrap" then
   nk=nk.."function "..tw[2].."(...)\n"
   apfile(tw[3])
   nk=nk.."\nend\n"
  elseif tw[1] == "include" then
   apfile(tw[2])
  else
   apfile(line)
  end
 end
 return nk
end