diff --git a/META-INF/MANIFEST.MF b/META-INF/MANIFEST.MF
deleted file mode 100644
index ad8383f..0000000
--- a/META-INF/MANIFEST.MF
+++ /dev/null
@@ -1,25 +0,0 @@
-Manifest-Version: 1.0
-Specification-Title: Java Platform API Specification
-Specification-Version: 1.5
-Implementation-Title: Apache Harmony
-Implementation-Vendor: The Apache Software Foundation
-Implementation-Vendor-Id: org.apache.harmony
-Implementation-URL: http://harmony.apache.org
-Bundle-ManifestVersion: 2
-Bundle-Name: Harmony Pack200
-Bundle-SymbolicName: org.apache.harmony.pack200
-Bundle-Version: 1.0.0
-Bundle-ClassPath: .
-Eclipse-JREBundle: true
-Import-Package: java.io;resolution:=optional,
- java.lang;resolution:=optional,
- java.util;resolution:=optional,
- java.util.jar;resolution:=optional,
- org.objectweb.asm
-Export-Package: org.apache.harmony.pack200,
- org.apache.harmony.unpack200,
- org.apache.harmony.unpack200.bytecode,
- org.apache.harmony.unpack200.bytecode.forms
-Bundle-RequiredExecutionEnvironment: J2SE-1.4,
- J2SE-1.5
-
diff --git a/build.xml b/build.xml
deleted file mode 100644
index 4e3abf0..0000000
--- a/build.xml
+++ /dev/null
@@ -1,197 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
-    this work for additional information regarding copyright ownership.
-    The ASF licenses this file to You under the Apache License, Version 2.0
-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-  
-       http://www.apache.org/licenses/LICENSE-2.0
-  
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-
-<project name="PACK200 Build" default="build" basedir=".">
-    <description>Build for PACK200 component</description>
-
-    <property name="hy.component" value="classlib" />
-    <property name="hy.module" value="pack200" />
-    <property name="hy.target" location="${basedir}/../../target" />
-    <import file="${hy.target}/hdk/build/ant/properties.xml" />
-    <import file="${hy.hdk}/build/ant/depends.xml" />
-
-    <property file="../../make/depends.properties" />
-
-    <target name="build" depends="check-depends,-build-no-check"/>
-    <target name="-build-no-check" depends="-build-jar,-test-jar" />
-
-    <target name="check-depends">
-        <check-one-file src="${asm.url}" dest="${asm.jar}" />
-        <copy todir="${hy.jdk}/jre/lib/boot">
-            <fileset dir="${depends.jars}">
-                <patternset includes="${asm.ver}/*.jar" />
-            </fileset>
-            <fileset dir="depends/manifests"/>
-        </copy>
-
-    </target>
-
-    <target name="fetch-depends">
-        <mkdir dir="${asm.dir}" />
-        <download-one-file src="${asm.url}" dest="${asm.jar}"
-                           md5="${asm.md5}" />
-    </target>
-
-    <target name="test" depends="-test-module">
-        <fail message="Some tests failed">
-            <condition>
-                <or>
-                    <isset property="test.failures" />
-                    <isset property="test.errors" />
-                </or>
-            </condition>
-        </fail>
-    </target>
-
-    <!-- internal target for local and global test run sequence -->
-    <target name="-test-module" depends="build,-run-tests" />
-
-    <target name="clean" depends="-clean-java,-clean-test" />
-    
-    <target name="-clean-java" unless="skip.java.build"
-            depends="-class-patternset">
-        <delete file="${hy.jdk}/jre/lib/boot/${hy.module}.jar" />
-        <delete file="${hy.jdk}/jre/lib/boot/${hy.module}-src.jar" />
-        <delete failonerror="false">
-            <fileset refid="classes" />
-        </delete>
-        <delete-patternset module="${hy.module}" />
-    </target>
-
-    <target name="-clean-test" unless="skip.test.build">
-        <delete dir="${tests.hdk.dir}" failonerror="false" />
-        <delete failonerror="false" dir="${hy.build.mod}/test"/>
-    </target>
-
-    <target name="-compile-java" unless="skip.java.build">
-        <echo message="Compiling ${hy.module} classes" />
-
-        <mkdir dir="${hy.build.top}/java" />
-
-    	<!-- Ordinary classes -->
-        <hy.javac sourcepath=""
-                  srcdir="src/main/java"
-                  destdir="${hy.build.top}/java"
-                  source="1.4"
-                  target="1.4">
-
-            <compilerarg line="${build.compilerarg}" />
-
-            <bootclasspath>
-                <fileset dir="${hy.jdk}/jre/lib/boot">
-                    <include name="**/*.jar" />
-                </fileset>
-            </bootclasspath>
-        </hy.javac>
-    	<!-- Java5 classes, with generics -->
-        <compile-classes description="${hy.module} java5 classes">
-            <javac-elements>
-                <src path="src/main/java5" />
-            </javac-elements>
-        </compile-classes>
-    </target>
-
-    <target name="findbugs" depends="-build-jar">
-        <run-findBugs
-            jarFile="${hy.jdk}/jre/lib/boot/${hy.module}.jar"
-            excludeFilter="make/findbugs-exclude-filter.xml"
-            outputFile="${findBugs.report}/${hy.module}.xml"/>
-    </target>
-
-    <target name="-build-jar" unless="skip.java.build"
-            depends="-svn-info,-compile-java,-class-patternset">
-        <hy.jar.bin destfile="${hy.jdk}/jre/lib/boot/${hy.module}.jar"
-             manifest="META-INF/MANIFEST.MF">
-            <manifest>
-                <attribute name="X-Compile-Source-JDK"
-                           value="${hy.javac.source} (parts 1.4)"/> 
-                <attribute name="X-Compile-Target-JDK"
-                           value="${hy.javac.target} (parts 1.4)"/> 
-            </manifest>
-            <fileset refid="classes" />
-            <fileset refid="resources" />
-        </hy.jar.bin>
-
-        <hy.jar.src destfile="${hy.jdk}/jre/lib/boot/${hy.module}-src.jar">
-            <fileset dir="src/main/java" />
-            <fileset dir="src/main/java/../java5" />
-        </hy.jar.src>
-    </target>
-
-    <target name="-test-jar" unless="skip.test.build"
-            depends="-svn-info,-compile-tests">
-        <mkdir dir="${tests.hdk.dir}" />
-
-        <copy file="make/run-test.xml" tofile="${tests.hdk.dir}/build.xml" />
-
-        <hy.jar.bin destfile="${tests.hdk.dir}/${hy.module}_tests.jar">
-            <fileset dir="${hy.build.mod}/test/api" />
-        </hy.jar.bin>
-
-        <mkdir dir="${tests.excludes.hdk.dir}"/>
-        <copy todir="${tests.excludes.hdk.dir}">
-            <fileset dir="make" includes="exclude*"/>
-            <filterchain>
-                <tokenfilter>
-                    <replaceregex pattern="\.java" replace="\.class" flags="g"/>
-                </tokenfilter>
-            </filterchain>
-        </copy>
-
-        <copy todir="${tests.resources.hdk.dir}">
-            <fileset dir="src/test/resources" />
-        </copy>
-    </target>
-
-    <target name="-compile-tests" unless="skip.test.build">
-        <mkdir dir="${hy.build.mod}/test/api" />
-
-        <mkdir dir="${hy.hdk}/build/test" />
-        <copy file="${junit.jar}"
-              tofile="${hy.hdk}/build/test/junit.jar" />
-        <copy file="${hamcrest-library.jar}"
-              tofile="${hy.hdk}/build/test/hamcrest-library.jar" />
-
-        <echo message="Compiling ${hy.module} tests" />
-        <hy.javac srcdir="src/test/java"
-                  destdir="${hy.build.mod}/test/api"
-                  sourcepath=""
-                  source="1.4" 
-                  target="1.4">
-
-            <compilerarg line="${build.compilerarg}" />
-
-            <bootclasspath>
-                <fileset dir="${hy.jdk}/jre/lib/boot">
-                    <include name="**/*.jar" />
-                </fileset>
-            </bootclasspath>
-            <classpath location="${hy.hdk}/build/test/junit.jar" />
-            <classpath location="${hy.hdk}/build/test/hamcrest-library.jar" />
-        </hy.javac>
-    </target>
-
-    <target name="-run-tests" depends="-test-jar">
-        <ant dir="${tests.hdk.dir}" target="test-module" />
-    </target>
-
-    <target name="-class-patternset" unless="skip.java.build">
-        <make-patternset module="${hy.module}" />
-    </target>
-
-</project>
diff --git a/depends/manifests/asm-3.1/META-INF/MANIFEST.MF b/depends/manifests/asm-3.1/META-INF/MANIFEST.MF
deleted file mode 100644
index e10a573..0000000
--- a/depends/manifests/asm-3.1/META-INF/MANIFEST.MF
+++ /dev/null
@@ -1,10 +0,0 @@
-Manifest-Version: 1.0
-Bundle-ManifestVersion: 2
-Bundle-Name: ASM
-Bundle-SymbolicName: org.objectweb.asm;singleton:=true
-Bundle-Version: 3.1
-Bundle-ClassPath: asm-3.1.jar
-Eclipse-JREBundle: true
-Import-Package: java.io,
- java.lang
-Export-Package: org.objectweb.asm, org.objectweb.asm.signature
diff --git a/make/depends.properties b/make/depends.properties
deleted file mode 100644
index 379b6fb..0000000
--- a/make/depends.properties
+++ /dev/null
@@ -1,21 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one or more
-# contributor license agreements.  See the NOTICE file distributed with
-# this work for additional information regarding copyright ownership.
-# The ASF licenses this file to You under the Apache License, Version 2.0
-# (the "License"); you may not use this file except in compliance with
-# the License.  You may obtain a copy of the License at
-# 
-#     http://www.apache.org/licenses/LICENSE-2.0
-# 
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-depends.jars=${hy.depends}/jars
-asm.ver=asm-3.1
-asm.dir=${depends.jars}/${asm.ver}
-asm.jar=${asm.dir}/${asm.ver}.jar
-asm.url=http://download.forge.objectweb.org/asm/${asm.ver}.jar
-asm.md5=4fbe0fd975ecc71480846ce272b483b0
diff --git a/make/exclude.common b/make/exclude.common
deleted file mode 100644
index e69de29..0000000
diff --git a/make/exclude.linux.x86.drl b/make/exclude.linux.x86.drl
deleted file mode 100644
index e69de29..0000000
diff --git a/make/exclude.linux.x86.ibm b/make/exclude.linux.x86.ibm
deleted file mode 100644
index e69de29..0000000
diff --git a/make/exclude.linux.x86_64.drl b/make/exclude.linux.x86_64.drl
deleted file mode 100644
index e69de29..0000000
diff --git a/make/exclude.linux.x86_64.ibm b/make/exclude.linux.x86_64.ibm
deleted file mode 100644
index e69de29..0000000
diff --git a/make/exclude.windows.x86.drl b/make/exclude.windows.x86.drl
deleted file mode 100644
index e69de29..0000000
diff --git a/make/exclude.windows.x86.ibm b/make/exclude.windows.x86.ibm
deleted file mode 100644
index e69de29..0000000
diff --git a/make/exclude.windows.x86_64.drl b/make/exclude.windows.x86_64.drl
deleted file mode 100644
index e69de29..0000000
diff --git a/make/findbugs-exclude-filter.xml b/make/findbugs-exclude-filter.xml
deleted file mode 100644
index e192978..0000000
--- a/make/findbugs-exclude-filter.xml
+++ /dev/null
@@ -1,46 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-	<!--
-		Licensed to the Apache Software Foundation (ASF) under one or more
-		contributor license agreements. See the NOTICE file distributed with
-		this work for additional information regarding copyright ownership.
-		The ASF licenses this file to You under the Apache License, Version
-		2.0 (the "License"); you may not use this file except in compliance
-		with the License. You may obtain a copy of the License at
-
-		http://www.apache.org/licenses/LICENSE-2.0 Unless required by
-		applicable law or agreed to in writing, software distributed under the
-		License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
-		CONDITIONS OF ANY KIND, either express or implied. See the License for
-		the specific language governing permissions and limitations under the
-		License.
-	-->
-
-	<!-- Exclusion filter for running FindBugs against Apache Harmony -->
-
-	<!--
-		Format and code information is available here
-		http://findbugs.sourceforge.net/manual/filter.html
-	-->
-
-<FindBugsFilter>
-
-	<!--
-        Intentional fallthrough in switch statement
-    -->
-	<Match>
-		<Class name="org.apache.harmony.unpack200.BcBands" />
-		<Method name="read" />
-		<Bug pattern="SF_SWITCH_FALLTHROUGH" />
-	</Match>
-
-	<!--
-        Our cache is testing String with ==
-    -->
-	<Match>
-		<Class name="org.apache.harmony.unpack200.SegmentConstantPoolArrayCache" />
-		<Method name="indexesForArrayKey" />
-		<Bug pattern="ES_COMPARING_PARAMETER_STRING_WITH_EQ" />
-	</Match>
-
-</FindBugsFilter>
-
diff --git a/make/run-test.xml b/make/run-test.xml
deleted file mode 100644
index a527b79..0000000
--- a/make/run-test.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
-    this work for additional information regarding copyright ownership.
-    The ASF licenses this file to You under the Apache License, Version 2.0
-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-  
-       http://www.apache.org/licenses/LICENSE-2.0
-  
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-
-<project name="Harmony Pack200 Test" default="test" basedir=".">
-
-    <property name="hy.test.root" location=".." />
-    <property name="hy.component" value="classlib" />
-    <property name="hy.module" value="pack200" />
-    <import file="${hy.test.root}/../ant/testproperties.xml" />
-
-    <target name="test" depends="test-module" />
-
-    <target name="test-module" depends="test-jre-vm-info">
-        <convert-test-as-class from="test.case" to="converted.tc.class" />
-        <run-hdk-tests module="pack200" jar="pack200_tests.jar">
-            <junit-elements>
-                <classpath location="resources" />
-            </junit-elements>
-        </run-hdk-tests>
-    </target>
-    
-</project>
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..c5c4348
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>dev.openrs2</groupId>
+  <artifactId>pack200</artifactId>
+  <version>1.0.0-SNAPSHOT</version>
+  <packaging>jar</packaging>
+
+  <name>Pack200</name>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>asm</groupId>
+      <artifactId>asm</artifactId>
+      <version>3.1</version>
+    </dependency>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.12</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>3.8.0</version>
+        <configuration>
+          <source>12</source>
+          <target>12</target>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>