libxss-dev - amd64

includes

../headers//usr/lib/gcc/x86_64-linux-gnu/4.9/include/stddef.h ../headers//usr/include/X11/X.h ../headers//usr/include/X11/Xlib.h ../headers//usr/include/X11/Xlibint.h ../headers//usr/include/X11/Xmd.h ../headers//usr/include/X11/Xproto.h ../headers//usr/include/X11/extensions/extutil.h ../headers//usr/include/X11/extensions/saverproto.h ../headers/../../include/X11/extensions/scrnsaver.h ../headers//usr/include/X11/extensions/Xext.h ../headers//usr/include/stdlib.h