How to put the entire lib directory (including all subdirectories) in the classpath using Ant?

Question

I'm not sure if this is a problem, but it seems like it could be. I get build errors telling me that specific packages do not exist. These packages are packages that exist in .jar files in my lib directory. Any other packages in my java source files that I compile and copy to the class directory work fine. Here are some of the foundations of my Ant build script related to this problem:

<property name="app.name" value="myapp" /> <property name="base.dir" value="${basedir}" /> <property name="build.dir" value="${base.dir}/build" /> <property name="build.webinf.dir" value="${build.dir}/WEB-INF" /> <property name="build.classes.dir" value="${build.webinf.dir}/classes" /> <property name="build.lib.dir" value="${build.webinf.dir}/lib" /> <property name="catalina.dir" value="C:\Program Files\Apache Software Foundation\apache-tomcat-5.5.28" /> <property name="catalina.lib.dir" value="${catalina.dir}/shared/lib" /> <property name="config.dir" value="${base.dir}/config" /> <property name="dist.dir" value="${basedir}/dist"/> <property name="lib.dir" value="${base.dir}/lib" /> <property name="src.dir" value="${base.dir}/src" /> <property name="www.dir" value="${base.dir}/www" /> <path id="compile.classpath"> <fileset dir="${lib.dir}"> <include name="*.jar" /> </fileset> <pathelement location="${catalina.dir}/common/classes" /> <fileset dir="${catalina.dir}/common/endorsed"> <include name="*.jar" /> </fileset> <fileset dir="${catalina.dir}/common/lib"> <include name="*.jar" /> </fileset> <pathelement location="${catalina.dir}/shared/classes"/> <fileset dir="${catalina.lib.dir}"> <include name="*.jar" /> </fileset> </path> <target name="init"> <mkdir dir="${build.dir}" /> <mkdir dir="${build.webinf.dir}" /> <mkdir dir="${build.classes.dir}" /> <mkdir dir="${build.lib.dir}" /> <mkdir dir="${dist.dir}" /> <mkdir dir="${src.dir}" /> </target> <target name="prepare_www_dir" description="Copies all static web content onto the build path."> <copy todir="${build.dir}"> <fileset dir="${www.dir}"/> </copy> </target> <target name="prepare_lib_dir" description="Copies all libraries onto the build lib path."> <copy todir="${build.lib.dir}"> <fileset dir="${lib.dir}" includes="**/*.jar" /> </copy> </target> <target name="compile" depends="init,prepare_www_dir,prepare_lib_dir" description="Compiles source code, and copies it onto the build class path."> <javac srcdir="${src.dir}" destdir="${build.classes.dir}"> <classpath refid="compile.classpath" /> </javac> </target> 

Answer 1

 <fileset dir="${lib.dir}"> <include name="**/*.jar" /> </fileset>