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This directory is the first step toward porting ION to the Android operating
system. It's a two-stage process:
1. First, the ION source code has to be ported to compile successfully
in the "bionic" environment that is provided to Java native code that runs
in Android. Bionic is a restricted libc that provides all of the functionality
that ION needs, though not always in exactly the same ways that these
capabilities are provided in Solaris or in a more full-featured Linux.
2. Compilation in bionic enables Java native method interface classes
to be written that invoke the native C functions of ION to operate a complete,
fully functional standard ION node on an Android device.
So far, we've only completed step 1. The second step of the Android "port"
will take a little longer, as it's actually the development of an entire
new ION API in Java; we're aiming for the end of summer 2012.
Here is the procedure for building ION in bionic:
1. Download and install the Android software development kit. For
details, see http://developer.android.com/sdk/index.html.
2. Download and install the Android NDK (native development kit). For
details, see http://developer.android.com/sdk/ndk/index.html.
3. Navigate to the arch-android/iondtn subdirectory of the ION
distribution; this is the project directory for the ION DTN Android project.
4. Run "ndk-build". This will build ION for bionic, placing a file
named "libiondtn.so" in arch-android/iondtn/libs/armeabi.
The NodeAdministrator class definition in arch-android/iondtn/src is the
start of an ION Android application.
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