Binary package “marco-dbg” in ubuntu xenial

lightweight GTK+ window manager for MATE (debugging symbols)

 Marco is a small window manager, using GTK+ to do everything. It is
 developed mainly for the MATE Desktop.
 .
 This package contains the debugging symbols for the marco executable.
 .
 The debugging symbols are installed in /usr/lib/debug and will
 automatically be used by gdb.