--- a/make/autoconf/spec.gmk.in	Fri Feb 16 20:55:07 2018 +0100
+++ b/make/autoconf/spec.gmk.in	Mon Feb 19 11:08:33 2018 +0100
@@ -685,6 +685,7 @@
 PANDOC:=@FIXPATH@ @PANDOC@
 PATCH:=@PATCH@
 PRINTF:=@PRINTF@
+READLINK:=@READLINK@
 RM:=@RM@
 RMDIR:=@RMDIR@
 SED:=@SED@