make[6]: Entering directory '/build/mate-panel-1.21.1/applets/notification_area/libstatus-notifier-watcher'
  CC       gf-sn-watcher-v0.lo
  CC       gf-status-notifier-watcher.lo
  CC       gf-sn-watcher-v0-gen.lo
gf-sn-watcher-v0-gen.c:16:12: fatal error: gio/gunixfdlist.h: No such file or directory
 #  include <gio/gunixfdlist.h>
            ^~~~~~~~~~~~~~~~~~~
compilation terminated.
make[6]: *** [Makefile:509: gf-sn-watcher-v0-gen.lo] Error 1
make[6]: Leaving directory '/build/mate-panel-1.21.1/applets/notification_area/libstatus-notifier-watcher'
make[5]: *** [Makefile:432: all] Error 2
make[5]: Leaving directory '/build/mate-panel-1.21.1/applets/notification_area/libstatus-notifier-watcher'
make[4]: *** [Makefile:885: all-recursive] Error 1
make[4]: Leaving directory '/build/mate-panel-1.21.1/applets/notification_area'
make[3]: *** [Makefile:600: all] Error 2
make[3]: Leaving directory '/build/mate-panel-1.21.1/applets/notification_area'
make[2]: *** [Makefile:451: all-recursive] Error 1
make[2]: Leaving directory '/build/mate-panel-1.21.1/applets'
make[1]: *** [Makefile:534: all-recursive] Error 1
make[1]: Leaving directory '/build/mate-panel-1.21.1'
make: *** [Makefile:466: all] Error 2