Index: bin/ant
--- bin/ant.orig	2008-06-27 07:03:55 +0200
+++ bin/ant	2009-06-25 13:02:37 +0200
@@ -307,7 +307,7 @@
 fi
 # Execute ant using eval/exec to preserve spaces in paths,
 # java options, and ant args
-ant_sys_opts=
+ant_sys_opts="-Djava.awt.headless=true"
 if [ -n "$CYGHOME" ]; then
   if [ -n "$JIKESPATH" ]; then
     ant_sys_opts="-Djikes.class.path=\"$JIKESPATH\" -Dcygwin.user.home=\"$CYGHOME\""