diff --git a/README.md b/README.md
index 4eb43a0..a42cb44 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # javacc
 
+Java Compiler Compiler (JavaCC) is the most popular parser generator for use with Java applications. A parser generator is a tool that reads a grammar specification and converts it to a Java program that can recognize matches to the grammar. In addition to the parser generator itself, JavaCC provides other standard capabilities related to parser generation such as tree building (via a tool called JJTree included with JavaCC), actions, debugging, etc.
+
diff --git a/javacc-5.0-parser-build_xml.patch b/javacc-5.0-parser-build_xml.patch
new file mode 100644
index 0000000..cea8efe
--- /dev/null
+++ b/javacc-5.0-parser-build_xml.patch
@@ -0,0 +1,11 @@
+--- src/org/javacc/parser/build.xml	2008-10-30 00:29:16.000000000 +0100
++++ src/org/javacc/parser/build.xml-gil	2010-04-17 17:42:36.000000000 +0200
+@@ -52,7 +52,7 @@
+     <javac srcdir="${javacc.root}/src"
+            destdir="${javacc.root}/classes"
+            debug="${build.compiler.debug}"
+-           source="1.4"
++           source="1.5"
+            classpath="${javacc.root}/classes:${junit.jar}">
+     </javac>
+   </target>
diff --git a/javacc.sh b/javacc.sh
new file mode 100644
index 0000000..5031f86
--- /dev/null
+++ b/javacc.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+# 
+# JavaCC script
+# JPackage Project <http://www.jpackage.org/>
+
+# Source functions library
+if [ -f /usr/share/java-utils/java-functions ] ; then 
+  . /usr/share/java-utils/java-functions
+else
+  echo "Can't find function library, aborting"
+  exit 1
+fi
+
+# Configuration
+MAIN_CLASS=javacc
+BASE_JARS="javacc.jar"
+
+# Set parameters
+set_jvm
+set_classpath $BASE_JARS
+set_flags $BASE_FLAGS
+set_options $BASE_OPTIONS
+
+# Let's start
+run "$@"
diff --git a/javacc.spec b/javacc.spec
new file mode 100644
index 0000000..ffe0a51
--- /dev/null
+++ b/javacc.spec
@@ -0,0 +1,160 @@
+%define        bootstrap    0
+%define        javahome   %{_jvmdir}/jdk
+Name:          javacc
+Version:       5.0
+Release:       4mamba
+Summary:       JavaCC is a parser/scanner generator for java
+Group:         Development/Tools
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://javacc.dev.java.net/
+Source0:       https://javacc.dev.java.net/files/documents/17/142527/javacc-%{version}src.tar.gz
+# files bin
+# http://www.jpackage.org/cgi-bin/viewvc.cgi/rpms/free/javacc3/
+Source1:       javacc.sh
+Source2:       jjdoc
+Source3:       jjtree
+Source5:       javacc-%{version}.jar
+Patch0:        javacc-5.0-parser-build_xml.patch
+License:       BSD
+BuildRequires: apache-ant
+BuildRequires: java-junit3
+BuildRequires: jpackage-utils
+Requires:      jpackage-utils
+BuildRoot:     %{_tmppath}/%{name}-%{version}-root
+
+%description
+Java Compiler Compiler (JavaCC) is the most popular parser generator for use with Java applications. A parser generator is a tool that reads a grammar specification and converts it to a Java program that can recognize matches to the grammar. In addition to the parser generator itself, JavaCC provides other standard capabilities related to parser generation such as tree building (via a tool called JJTree included with JavaCC), actions, debugging, etc.
+
+%package demo
+Group:          Documentation
+Summary:        Examples for %{name}
+
+%description demo
+JavaCC is a parser/scanner generator for java.
+
+This package contains examples for %{name}
+
+%package manual
+Group:          Documentation
+Summary:        Manual for %{name}
+
+%description manual
+JavaCC is a parser/scanner generator for java.
+
+This package contains manual for %{name}.
+
+%prep
+%setup -q -n %{name}
+cp %{SOURCE1} bin/javacc
+cp %{SOURCE2} bin/jjdoc
+cp %{SOURCE3} bin/jjtree
+
+for j in $(find . -name "*.jar"); do
+	mv $j ${j}.no
+done
+
+%patch0
+
+%if %bootstrap
+	mv bootstrap/javacc.jar.no bootstrap/javacc.jar
+%else
+#	ln -sf $(build-classpath javacc) bootstrap/javacc.jar
+	cp -p %{SOURCE5} bootstrap/javacc.jar
+%endif
+
+for j in $(find . -name "*.class"); do
+	rm -rf $j
+done
+
+ln -sf %{_javadir}/junit381.jar lib/junit3.8.1/junit.jar
+
+%build
+export JAVA_HOME=%javahome
+# use %{SOURCE5} to generate some required source java files.
+# after these source files are generated we remove the
+# bootstrap jar and build the binary from source.
+ant -f src/org/javacc/parser/build.xml parser-files
+ant -f src/org/javacc/jjtree/build.xml tree-files
+
+for j in $(find . -name "*.jar"); do
+  rm -rf $j
+done
+
+export CLASSPATH=$(build-classpath junit)
+ant jar
+
+%if %bootstrap
+  cp bin/lib/javacc.jar %{_sourcedir}/javacc-%{version}.jar
+%endif
+
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+mkdir -p %{buildroot}%{_javadir}
+
+install -pm 644 bin/lib/javacc.jar %{buildroot}%{_javadir}/javacc-%{version}.jar
+ln -s javacc-%{version}.jar %{buildroot}%{_javadir}/javacc.jar
+
+mkdir -p %{buildroot}%{_mavenpomdir}
+sed -i "s|<version>4.2</version>|%{version}|" pom.xml
+sed -i "s|<modelVersion>5.0.0</modelVersion>|<modelVersion>4.0.0</modelVersion>|" pom.xml
+install -pm 644 pom.xml %{buildroot}%{_mavenpomdir}/JPP-javacc.pom
+%add_to_maven_depmap net.java.dev.javacc javacc %{version} JPP javacc
+
+
+mkdir -p %{buildroot}%{_bindir}
+install -m 755 bin/{javacc,jjdoc,jjtree} %{buildroot}%{_bindir}
+
+mkdir -p  %{buildroot}%{_datadir}/javacc
+cp -pr examples %{buildroot}%{_datadir}/javacc
+
+#%{_bindir}/aot-compile-rpm
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%post
+%update_maven_depmap
+
+%postun
+%update_maven_depmap
+
+%files
+%defattr(-,root,root)
+%attr(0755,root,root) %{_bindir}/javacc
+%attr(0755,root,root) %{_bindir}/jjdoc
+%attr(0755,root,root) %{_bindir}/jjtree
+%{_javadir}/javacc-%{version}.jar
+%{_javadir}/javacc.jar
+%{_mavenpomdir}/*
+%{_mavendepmapfragdir}/*
+%doc LICENSE README
+
+%files demo
+%defattr(-,root,root)
+%{_datadir}/javacc
+
+%files manual
+%defattr(-,root,root)
+%doc www/*
+
+%changelog
+* Fri Mar 25 2011 gil <puntogil@libero.it> 5.0-4mamba
+- rebuilt with java-gcj-compat support
+
+* Sun Nov 07 2010 gil <puntogil@libero.it> 5.0-3mamba
+- rebuilt devel
+
+* Sat Apr 17 2010 gil <puntogil@libero.it> 5.0-2mamba
+- rebuilt with system javacc.jar
+
+* Sat Apr 17 2010 gil <puntogil@libero.it> 5.0-1mamba
+- update to 5.0
+- added maven pom
+- bootstrap
+
+* Thu Feb 26 2009 gil <puntogil@libero.it> 4.2-1mamba
+- package created by autospec
diff --git a/jjdoc b/jjdoc
new file mode 100644
index 0000000..bc9aa0f
--- /dev/null
+++ b/jjdoc
@@ -0,0 +1,25 @@
+#!/bin/sh
+# 
+# JJDoc script
+# JPackage Project <http://www.jpackage.org/>
+
+# Source functions library
+if [ -f /usr/share/java-utils/java-functions ] ; then 
+  . /usr/share/java-utils/java-functions
+else
+  echo "Can't find function library, aborting"
+  exit 1
+fi
+
+# Configuration
+MAIN_CLASS=jjdoc
+BASE_JARS="javacc.jar"
+
+# Set parameters
+set_jvm
+set_classpath $BASE_JARS
+set_flags $BASE_FLAGS
+set_options $BASE_OPTIONS
+
+# Let's start
+run "$@"
diff --git a/jjtree b/jjtree
new file mode 100644
index 0000000..bfe4db3
--- /dev/null
+++ b/jjtree
@@ -0,0 +1,25 @@
+#!/bin/sh
+# 
+# JJTree script
+# JPackage Project <http://www.jpackage.org/>
+
+# Source functions library
+if [ -f /usr/share/java-utils/java-functions ] ; then 
+  . /usr/share/java-utils/java-functions
+else
+  echo "Can't find function library, aborting"
+  exit 1
+fi
+
+# Configuration
+MAIN_CLASS=jjtree
+BASE_JARS="javacc.jar"
+
+# Set parameters
+set_jvm
+set_classpath $BASE_JARS
+set_flags $BASE_FLAGS
+set_options $BASE_OPTIONS
+
+# Let's start
+run "$@"