+### Silent rules stuff.
+
+## Default verbosity setting.
+V = 0
+
+## Infrastructure.
+v_echo = $(call v_echo_$V,$1)
+v_echo_1 =
+v_echo_0 = @printf " %-6s %s\n" "$1" "$@";
+V_HIDE = $(V_HIDE_$V)
+V_HIDE_0 = @
+
+###--------------------------------------------------------------------------