There is no longer an ExtUtils::DynaLib.  It has been renamed C::DynaLib.

Please retrieve the latest version of C::DynaLib and accept my apologies.
Also note the interface changes.  Certain errors that were fatal now simply
return undef.  Specifically,

  $lib = new ExtUtils::DynaLib("no such library");	# was fatal
  $lib = new C::DynaLib("no such library");		# $lib == undef

  $func = $lib->DeclareSub("no such function", @args);	# was fatal in
							# ExtUtils::DynaLib,
							# undef in C::DynaLib.

  $cb = new ExtUtils::DynaLib::Callback(@args);		# fatal if too many
						# callback objects exist
  $cb = new C::DynaLib::Callback(@args);		# $cb may be undef