if not _REQUIREDNAME then
        error('Don\'t load directly, use require "libhttpd"', 2)
      end
      
      -- Get libname.
      local libname  = os.getenv "LUA_SOPATH"
      if libname then
        if not string.find(libname, '/$') then
          libname = libname .. "/"
        end
      else
        libname = "/usr/lib/lua/5.0/"
      end
      libname = libname .. _REQUIREDNAME .. ".so"

      
      local funcname = "luaopen_" .. _REQUIREDNAME
      
      local f, err = loadlib(libname, funcname)
      if not f then
        error("loadlib('" .. libname .. "', '" .. funcname .. "') failed: " .. err, 2)
      end
      
      local function ret(s, ...)
        if s then
          return unpack(arg)
        end
        error(_REQUIREDNAME .. "'s " .. funcname .. " failed: " .. arg[1], 3)
      end
      return ret(pcall(f))