Teensy and Arduino Leonardo code share

sketch_nov07a.cpp:19: ??? ‘class Keyboard_’????‘set_modifier’???
sketch_nov07a.cpp:19: ??? ‘MODIFIERKEY_RIGHT_GUI’??????????
sketch_nov07a.cpp:20: ??? ‘class Keyboard_’????‘set_key1’???
sketch_nov07a.cpp:20: ??? ‘KEY_R’??????????
sketch_nov07a.cpp:21: ??? ‘class Keyboard_’????‘send_now’???
sketch_nov07a.cpp:26: ??? ‘class Keyboard_’????‘set_modifier’???
sketch_nov07a.cpp:27: ??? ‘class Keyboard_’????‘set_key1’???
sketch_nov07a.cpp:28: ??? ‘class Keyboard_’????‘send_now’???
sketch_nov07a.cpp:34: ??? ‘class Keyboard_’????‘set_key1’???
sketch_nov07a.cpp:34: ??? ‘KEY_ENTER’??????????
sketch_nov07a.cpp:35: ??? ‘class Keyboard_’????‘send_now’???
sketch_nov07a.cpp:38: ??? ‘class Keyboard_’????‘set_key1’???
sketch_nov07a.cpp:39: ??? ‘class Keyboard_’????‘send_now’???
sketch_nov07a.cpp:45: ??? ‘class Keyboard_’????‘set_key1’???
sketch_nov07a.cpp:46: ??? ‘class Keyboard_’????‘send_now’???
sketch_nov07a.cpp:47: ??? ‘class Keyboard_’????‘set_key1’???
sketch_nov07a.cpp:48: ??? ‘class Keyboard_’????‘send_now’???
sketch_nov07a.cpp:51: ??? ‘class Keyboard_’????‘set_key1’???
sketch_nov07a.cpp:52: ??? ‘class Keyboard_’????‘send_now’???
sketch_nov07a.cpp:53: ??? ‘class Keyboard_’????‘set_key1’???
sketch_nov07a.cpp:54: ??? ‘class Keyboard_’????‘send_now’???
sketch_nov07a.cpp:57: ??? ‘class Keyboard_’????‘set_key1’???
sketch_nov07a.cpp:58: ??? ‘class Keyboard_’????‘send_now’???
sketch_nov07a.cpp:59: ??? ‘class Keyboard_’????‘set_key1’???
sketch_nov07a.cpp:60: ??? ‘class Keyboard_’????‘send_now’???