diff --git a/.gitignore b/.gitignore
index 07efdbf..ee681cb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,9 @@
+javacc-4.1src.tar.gz
+javacc.jar
+javacc-5.0src.tar.gz
+/javacc-6.1.2-sources.jar
+/release_6_1_3.tar.gz
+/7.0.1.tar.gz
+/release_7_0_2.tar.gz
 /7.0.4.tar.gz
+/7.0.5.tar.gz
diff --git a/0001-Add-javadoc-target-to-build.xml.patch b/0001-Add-javadoc-target-to-build.xml.patch
new file mode 100644
index 0000000..2132410
--- /dev/null
+++ b/0001-Add-javadoc-target-to-build.xml.patch
@@ -0,0 +1,25 @@
+From 8f1dda63b3e44835a0a88975b368c132f538fd4f Mon Sep 17 00:00:00 2001
+From: Michal Srb <msrb@redhat.com>
+Date: Tue, 30 Jul 2013 15:10:14 +0200
+Subject: [PATCH] Add javadoc target to build.xml
+
+---
+ build.xml | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/build.xml b/build.xml
+index 7337939..0b283c5 100644
+--- a/build.xml
++++ b/build.xml
+@@ -538,4 +538,8 @@ THE POSSIBILITY OF SUCH DAMAGE.
+ 
+   </target>
+ 
++  <target name="javadoc" depends="jar" description="generate javadoc">
++    <javadoc sourcepath="src/" destdir="api/" />
++  </target>
++
+ </project>
+-- 
+1.8.1.4
+