common/autoconf/spec.gmk.in

@@ -34,10 +34,11 @@
 # often semantically important! Sometimes we need to subst
 # spaces and commas, therefore we need the following macros.
 X:=
 SPACE:=$(X) $(X)
 COMMA:=,
+DOLLAR:=$$
 HASH:=\#
 LEFT_PAREN:=(
 RIGHT_PAREN:=)
 SQUOTE:='
 #'