/usr/ is in libflatzebra-dev 0.1.5-4build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/libflatzebra-dev/
/usr/share/doc/libflatzebra-dev/copyright
/usr/share/doc/libflatzebra-dev/README
/usr/include/
/usr/include/flatzebra/
/usr/include/flatzebra/KeyState.h
/usr/include/flatzebra/Joystick.h
/usr/include/flatzebra/PixmapArray.h
/usr/include/flatzebra/SoundMixer.h
/usr/include/flatzebra/Sprite.h
/usr/include/flatzebra/RSprite.h
/usr/include/flatzebra/Couple.h
/usr/include/flatzebra/PixmapLoadError.h
/usr/include/flatzebra/GameEngine.h
/usr/include/flatzebra/RCouple.h
/usr/lib/
/usr/lib/pkgconfig/
/usr/lib/pkgconfig/flatzebra-0.1.pc
/usr/share/doc/libflatzebra-dev/changelog.Debian.gz
/usr/lib/libflatzebra-0.1.so