Building

Make sure /System/Library/Frameworks/JavaVM.framework/Headers exists, which contains the JNI headers. If the directory does not exist, symlink it to /Library/Java/JavaVirtualMachines/jdk1.8.0_05.jdk/Contents/Home/include (adjust for your JDK installation directory).

./build.sh

This will download and build libarchive-3.1.2 and build libhfsdecompressor.dylib, in build/Release.