First, download and extract the ndk android-ndk-r10e to this folder (i.e. android/android-ndk-r10e/). The android sdk must be installed in /opt. ant is also needed. [not needed anymore] Download a suitable jpeglib (done automatically by the Makefile) ================================================================ > git clone https://github.com/folecr/jpeg8d jni/jpeglib Build an apk ============ > make build apk Install and run =============== > make install run