path: root/java/proguard/pkg-message

This port installs the jar-file (${PREFIX}/share/proguard1.5.1/lib/proguard.jar)
which should be run with java:

cd ${PREFIX}/share/proguard1.5.1/lib
java -jar proguard.jar @options

You should prepare the file with options before this. Read the documentation
for the details.