diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 000000000..ccde27a81
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,53 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - '*'
+  pull_request:
+    branches:
+      - '*'
+
+permissions:
+  contents: read
+
+# https://help.github.com/en/actions/automating-your-workflow-with-github-actions/software-installed-on-github-hosted-runners
+# GitHub Actions does not support Docker, PostgreSQL server on Windows, macOS :(
+
+concurrency:
+  # On master/release, we don't want any jobs cancelled so the sha is used to name the group
+  # On PR branches, we cancel the job if new commits are pushed
+  # More info: https://stackoverflow.com/a/68422069/253468
+  group: ${{ github.ref == 'refs/heads/trunk' && format('ci-main-{0}', github.sha) || format('ci-main-{0}', github.ref) }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: 'Build, Java 8'
+    runs-on: ubuntu-latest
+    steps:
+    - name: 'Checkout xalan-java'
+      uses: actions/checkout@v3
+    - name: 'Set up JDK 8'
+      uses: actions/setup-java@v2
+      with:
+        distribution: zulu
+        java-version: 8
+    - name: 'Build Xalan jars'
+      run: |
+        ant jar
+    - uses: actions/checkout@v3
+      name: 'Checkout xalan-test'
+      with:
+        repository: apache/xalan-test
+        path: xalan-test
+        ref: xalan-j_2_7_x
+    - name: 'Run xalan-test tests'
+      working-directory: xalan-test
+      run: |
+        ant alltest -Dxalan.relpath=../ -Dparserjar=../lib/endorsed/xercesImpl.jar -Dxml-apis.jar=../lib/endorsed/xml-apis.jar
+      env:
+        _JAVA_OPTIONS: -XX:+UnlockExperimentalVMOptions -XX:hashCode=2
+    - id: build_artifacts
+      run: |
+        ant fulldist
diff --git a/.gitignore b/.gitignore
index f4d30d4c8..15e3d4e1e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,33 @@
 /bin/
-/build/
\ No newline at end of file
+/build/
+/classes/
+/.idea/
+*.iml
+.DS_Store
+
+# We download the dependencies if they are missing
+/lib/
+/tools/java_cup.jar
+/tmp/
+
+# Generated sources
+/src/org/apache/xalan/processor/XSLProcessorVersion.java
+/src/org/apache/xalan/xsltc/compiler/XPathLexer.java
+/src/org/apache/xalan/xsltc/compiler/XPathParser.java
+/src/org/apache/xalan/xsltc/compiler/sym.java
+/xdocs/sources/xalan/DONE
+/xdocs/sources/xalan/XSLTCDONE
+/xdocs/style/graphics/
+/xdocs/style/loader.xml
+/xdocs/style/resources/
+/xdocs/style/stylesheets/any2header.xsl
+/xdocs/style/stylesheets/any2project.xsl
+/xdocs/style/stylesheets/book2group.xsl
+/xdocs/style/stylesheets/book2project.xsl
+/xdocs/style/stylesheets/changes2document.xsl
+/xdocs/style/stylesheets/context2footer.xsl
+/xdocs/style/stylesheets/context2label.xsl
+/xdocs/style/stylesheets/directory2project.xsl
+/xdocs/style/stylesheets/document2html.xsl
+/xdocs/style/stylesheets/faqs2document.xsl
+/xdocs/style/stylesheets/group2document.xsl
diff --git a/build.xml b/build.xml
index 978ab87ad..837d9d100 100644
--- a/build.xml
+++ b/build.xml
@@ -82,9 +82,11 @@ $Id$
   
   <!-- Xalan Java directories -->  
   <!--  <property name="bin.dir"                value="./bin"/> -->
+  <property name="maven.repository.url"   value="https://repo1.maven.org/maven2"/>
   <property name="build.dir"              value="./build"/> 
   <property name="lib.dir"                value="./lib"/>   
   <property name="endorsed.dir"           value="${lib.dir}/endorsed"/>   
+  <mkdir dir="${endorsed.dir}"/>
   <property name="samples.dir"            value="./samples"/>   
   <property name="src.dir"                value="./src"/>  
   <property name="tools.dir"              value="./tools"/> 
@@ -98,14 +100,18 @@ $Id$
   <property name="xsltc.reldir"           value="${xalan.reldir}/xsltc"/>  
 
   <!-- Jars to run Xalan Java (Interpretive, Compiled, or both) -->
+  <property name="xmlapis.jar.version"    value="1.4.01"/>
   <property name="xmlapis.jar.name"       value="xml-apis.jar"/>
   <property name="xmlapis.jar"            value="${endorsed.dir}/${xmlapis.jar.name}"/>
+  <property name="parser.jar.version"     value="2.12.2"/>
   <property name="parser.jar.name"        value="xercesImpl.jar"/>
   <property name="parser.jar"             value="${endorsed.dir}/${parser.jar.name}"/>
+  <property name="bcel.jar.version"       value="5.1"/>
   <property name="bcel.jar.name"          value="BCEL.jar"/>
   <property name="bcel.jar"               value="${lib.dir}/${bcel.jar.name}"/>
   <property name="runtime.jar.name"       value="runtime.jar"/>
   <property name="runtime.jar"            value="${lib.dir}/${runtime.jar.name}"/>
+  <property name="regexp.jar.version"     value="1.2"/>
   <property name="regexp.jar.name"        value="regexp.jar"/>
   <property name="regexp.jar"             value="${lib.dir}/${regexp.jar.name}"/>
   
@@ -122,8 +128,10 @@ $Id$
   <property name="taglet.jar"             value="${tools.dir}/${taglet.jar.name}"/>
 
   <!-- Jars to build Xalan Java samples -->
-  <property name="servlet-api.jar.name"   value="servlet-api-2.5.jar"/>
+  <property name="servlet-api.jar.version" value="2.5"/>
+  <property name="servlet-api.jar.name"   value="servlet-api-${servlet-api.jar.version}.jar"/>
   <property name="servlet-api.jar"        value="${lib.dir}/${servlet-api.jar.name}"/>
+  <property name="javaee-api.jar.version" value="5"/>
   <property name="javaee-api.jar.name"    value="javaee-api-5.0-2.jar"/>
   <property name="javaee-api.jar"         value="${lib.dir}/${javaee-api.jar.name}"/>
   <property name="brazil.jar.name"        value="brazil-2.1.jar"/>
@@ -225,6 +233,42 @@ $Id$
     <pathelement location="${build.xalan.jar}" />
     <pathelement path="${java.class.path}" />
   </path>
+  <macrodef name="get_from_maven">
+    <attribute name="groupId"/>
+    <attribute name="artifactId"/>
+    <attribute name="dstProperty"/>
+    <sequential>
+      <get src="${maven.repository.url}/@{groupId}/@{artifactId}/${@{dstProperty}.version}/@{artifactId}-${@{dstProperty}.version}.jar"
+           dest="${@{dstProperty}}"
+           skipexisting="true"
+      />
+    </sequential>
+  </macrodef>
+  <target name="thirdparty.jars.download">
+    <get_from_maven groupId="xml-apis" artifactId="xml-apis" dstProperty="xmlapis.jar"/>
+    <get_from_maven groupId="xerces" artifactId="xercesImpl" dstProperty="parser.jar"/>
+    <get_from_maven groupId="bcel" artifactId="bcel" dstProperty="bcel.jar"/>
+    <get_from_maven groupId="regexp" artifactId="regexp" dstProperty="regexp.jar"/>
+    <get_from_maven groupId="javaee" artifactId="javaee-api" dstProperty="javaee-api.jar"/>
+    <get_from_maven groupId="javax/servlet" artifactId="servlet-api" dstProperty="servlet-api.jar"/>
+
+    <!-- /build/ is included to the distribution, so we avoid placing more files there -->
+    <property name="tmp.dir" value="tmp"/>
+
+    <!--
+        See http://www2.cs.tum.edu/projects/cup/install.php
+    -->
+    <property name="java_cup.release" value="java-cup-bin-11b-20160615.tar.gz"/>
+    <mkdir dir="${tmp.dir}/java_cup/bin"/>
+    <mkdir dir="${tmp.dir}/java_cup/extracted"/>
+    <get src="http://www2.cs.tum.edu/projects/cup/releases/${java_cup.release}"
+         dest="${tmp.dir}/java_cup/bin"
+         skipexisting="true"
+    />
+    <untar src="${tmp.dir}/java_cup/bin/${java_cup.release}" dest="${tmp.dir}/java_cup/extracted" compression="gzip"/>
+    <copy tofile="${java_cup.jar}" file="${tmp.dir}/java_cup/extracted/java-cup-11b.jar"/>
+    <copy tofile="${runtime.jar}" file="${tmp.dir}/java_cup/extracted/java-cup-11b-runtime.jar"/>
+  </target>
   <path id="compile.class.path">
     <!-- Ensure the selected parser.jar file is used to compile against -->
     <pathelement location="${build.classes}" />
@@ -295,9 +339,10 @@ $Id$
     <include name="${dist.file}/build.*"/>
     <include name="${dist.file}/commits.xml"/>
     <include name="${dist.file}/KEYS"/>
-    <include name="${dist.file}/readme.html"/>  
-    <include name="${dist.file}/lib/"/>
-    <include name="${dist.file}/tools/"/>
+    <include name="${dist.file}/readme.html"/>
+    <include name="${dist.file}/tools/stylebook-1.0-b3_xalan-2.jar"/>
+    <include name="${dist.file}/tools/xalan2jdoc.jar"/>
+    <include name="${dist.file}/tools/xalan2jtaglet.jar"/>
     <include name="${dist.file}/samples/"/>
     <exclude name="${dist.file}/samples/xalansamples.jar"/>
     <exclude name="${dist.file}/samples/xalanservlet.war"/>
@@ -321,7 +366,7 @@ $Id$
   <!-- =================================================================== -->
   <!-- Creates output build directories and doc prerequistes               -->
   <!-- =================================================================== -->
-  <target name="prepare">
+  <target name="prepare" depends="thirdparty.jars.download">
     <echo message="Project:${Name-in-docs} version:${version} build.xml $Revision$"/>
     <mkdir dir="${build.dir}"/>
     <mkdir dir="${build.classes}"/>
@@ -502,7 +547,9 @@ $Id$
   </target>
   
   <!-- Generate the XPath lexer sources for xsltc if needed -->
-  <target name="xsltc.jlex" depends="xsltc.java_cup" unless="xsltc.jlex.not_needed">
+  <!-- The ASF rules forbid incuding binary files into the source distribution,
+       so we can't execute this step automatically. -->
+  <target name="xsltc.jlex" depends="xsltc.java_cup" unless="false"> <!-- xsltc.jlex.not_needed -->
     <!-- The third step generates XPathLexer.java. The lexiographical analyser
     has to be generated after sym.java, so order is important. -->
     <echo message="JLex preparsing"/>
@@ -844,9 +891,9 @@ $Id$
   <!-- Compiles all samples that require extra non-standard components in  -->
   <!-- order to compile.                                                   -->
   <!-- =================================================================== -->
-  <target name="extra.nonstd.samples" depends="xsltc.brazil"/>
+  <target name="extra.nonstd.samples" depends=""/>
   
-  <target name="extra.nonstd.samples.nojardepends" depends="xsltc.brazil.jardepends"/>
+  <target name="extra.nonstd.samples.nojardepends" depends=""/>
 
   <!-- =================================================================== -->
   <!-- Compiles the sample servlet and jars the class files.               --> 
@@ -901,7 +948,7 @@ $Id$
   <!-- =================================================================== -->
   <target name="xsltc.samples" depends="jar,xsltc.samples.nojardepends"/>
 
-  <target name="xsltc.samples.nojardepends">
+  <target name="xsltc.samples.nojardepends" depends="thirdparty.jars.download">
     <mkdir dir="${build.samples}"/>
     <javac srcdir="${samples.dir}/translets"
            classpath="${java.class.path}:${build.xalan.jar}" 
@@ -979,7 +1026,10 @@ $Id$
            destdir="${build.samples}/CompiledServlet" excludes="${exclude}"
            debug="${build.debug}" bootclasspathref="xslt.boot.class.path" 
     	   target="${compiler.target}" source="${compiler.source}">
-    	<classpath location="${servlet-api.jar}"/>
+        <classpath>
+          <pathelement location="${servlet-api.jar}"/>
+          <pathelement location="${build.xalan.jar}"/>
+        </classpath>
     </javac>
     <jar jarfile="${build.xsltc.servlet.jar}"
          basedir="${build.samples}/CompiledServlet"
@@ -1331,8 +1381,8 @@ $Id$
     <copy file="${build.dir}/xalansamples.jar" todir="${dist.dir}/samples"/>
     <copy file="${build.dir}/xalanservlet.war" todir="${dist.dir}/samples"/>
     <copy file="${build.dir}/xsltcapplet.jar"  todir="${dist.dir}/samples"/>
-    <copy file="${build.dir}/xsltcbrazil.jar"  todir="${dist.dir}/samples"
-          failonerror="${has.nonstd.parts}"/>
+<!--    <copy file="${build.dir}/xsltcbrazil.jar"  todir="${dist.dir}/samples"-->
+<!--          failonerror="${has.nonstd.parts}"/>-->
     <copy file="${build.dir}/xsltcejb.jar"     todir="${dist.dir}/samples"/>
     <copy file="${build.dir}/xsltcservlet.jar" todir="${dist.dir}/samples"/>
     
@@ -1394,7 +1444,6 @@ $Id$
     <tar tarfile="${build.dir}/${dist.pkg}-src.tar" >
       <tarfileset dir="${build.dir}">
         <patternset refid="src-distro"/>
-        <patternset refid="xsltc-deps-jars"/>
       </tarfileset>
     </tar>
     <gzip src="${build.dir}/${dist.pkg}-src.tar" zipfile="${build.dir}/${dist.pkg}-src.tar.gz"/>
@@ -1403,7 +1452,6 @@ $Id$
     <zip zipfile="${build.dir}/${dist.pkg}-src.zip" >
       <fileset dir="${build.dir}">
         <patternset refid="src-distro"/>
-        <patternset refid="xsltc-deps-jars"/>
       </fileset>
     </zip>
   </target>
@@ -1631,18 +1679,6 @@ $Id$
     <include name="${serializer.dist.file}/src/${serializer.reldir}/**/*.java" />
     <include name="${serializer.dist.file}/src/${serializer.reldir}/**/*.properties" />
     <include name="${serializer.dist.file}/src/${serializer.manifest.basename}" />
-
-    <!-- We need Ant in order to run build.xml in the source distribution -->
-    <include name="${serializer.dist.file}/tools/ant.jar"/>
-    <include name="${serializer.dist.file}/tools/antRun"/>
-    <include name="${serializer.dist.file}/tools/antRun.bat"/>
-
-    <!-- The serializer needs this jar in order to build -->
-    <include name="${serializer.dist.file}/xml-apis.jar"/>
-    
-    <!-- Ant needs an XML parser in order to read in the build.xml, so it
-         can even do the build ... this is a strange loop ... -->
-    <include name="${serializer.dist.file}/xercesImpl.jar"/>
   </patternset>
 
   <!-- patternset for  binary distribution packages ... if needed
diff --git a/lib/BCEL.jar b/lib/BCEL.jar
deleted file mode 100644
index 644f87634..000000000
Binary files a/lib/BCEL.jar and /dev/null differ
diff --git a/lib/brazil-2.1.jar b/lib/brazil-2.1.jar
deleted file mode 100644
index 78a1e784f..000000000
Binary files a/lib/brazil-2.1.jar and /dev/null differ
diff --git a/lib/endorsed/xercesImpl.jar b/lib/endorsed/xercesImpl.jar
deleted file mode 100644
index ccbae9f45..000000000
Binary files a/lib/endorsed/xercesImpl.jar and /dev/null differ
diff --git a/lib/endorsed/xml-apis.jar b/lib/endorsed/xml-apis.jar
deleted file mode 100644
index 4f677fc86..000000000
Binary files a/lib/endorsed/xml-apis.jar and /dev/null differ
diff --git a/lib/javaee-api-5.0-2.jar b/lib/javaee-api-5.0-2.jar
deleted file mode 100644
index 65acd770a..000000000
Binary files a/lib/javaee-api-5.0-2.jar and /dev/null differ
diff --git a/lib/regexp.jar b/lib/regexp.jar
deleted file mode 100644
index 713441c52..000000000
Binary files a/lib/regexp.jar and /dev/null differ
diff --git a/lib/runtime.jar b/lib/runtime.jar
deleted file mode 100644
index c74baf197..000000000
Binary files a/lib/runtime.jar and /dev/null differ
diff --git a/lib/servlet-api-2.5.jar b/lib/servlet-api-2.5.jar
deleted file mode 100644
index b0537c4db..000000000
Binary files a/lib/servlet-api-2.5.jar and /dev/null differ
diff --git a/tools/ant.jar b/tools/ant.jar
deleted file mode 100644
index 7cf87e838..000000000
Binary files a/tools/ant.jar and /dev/null differ
diff --git a/tools/antRun b/tools/antRun
deleted file mode 100644
index f0a18f165..000000000
--- a/tools/antRun
+++ /dev/null
@@ -1,9 +0,0 @@
-#! /bin/sh
-
-# Args: DIR command
-cd "$1"
-CMD="$2"
-shift
-shift
-
-exec $CMD "$@"
diff --git a/tools/antRun.bat b/tools/antRun.bat
deleted file mode 100755
index a989b67d4..000000000
--- a/tools/antRun.bat
+++ /dev/null
@@ -1,36 +0,0 @@
-@echo off
-rem
-rem ==========================================================================
-rem = Copyright 2004 The Apache Software Foundation.
-rem =
-rem = Licensed under the Apache License, Version 2.0 (the "License");
-rem = you may not use this file except in compliance with the License.
-rem = You may obtain a copy of the License at
-rem =
-rem =     http://www.apache.org/licenses/LICENSE-2.0
-rem =
-rem = Unless required by applicable law or agreed to in writing, software
-rem = distributed under the License is distributed on an "AS IS" BASIS,
-rem = WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-rem = See the License for the specific language governing permissions and
-rem = limitations under the License.
-rem ==========================================================================
-rem
-rem Change drive and directory to %1 (Win9X only for NT/2K use "cd /d")
-cd %1
-%1\
-set ANT_RUN_CMD=%2
-shift
-shift
-
-set PARAMS=
-:loop
-if ""%1 == "" goto runCommand
-set PARAMS=%PARAMS% %1
-shift
-goto loop
-
-:runCommand
-rem echo %ANT_RUN_CMD% %PARAMS%
-%ANT_RUN_CMD% %PARAMS%
-
diff --git a/tools/java_cup.jar b/tools/java_cup.jar
deleted file mode 100644
index 3e12262fb..000000000
Binary files a/tools/java_cup.jar and /dev/null differ