Python Cross Compiling Example

This repository is a worked example of cross compiling a non-trivial Python app to run on Android. It is the companion to the Python Cross-Compiling Guide (as yet unpublished). The makefile above will download all dependencies, build them, and produce a tarball containing:

• Python 3.6 for Android (ARM)
• numpy
• Pandas
• matplotlib
• Pillow
• Example Python scripts

Building

The makefile is written and tested on Ubuntu 16.04. Consult docker/Dockerfile in this repository for details of the prerequisites that should be installed on the build machine.

To build, it should be enough to run make.

To build using Docker:

$ docker run --rm \
    -v /path/to/working:/working \
    -v /path/to/output:/output \
    -v /path/to/this/repo:/source \
    benfogle/python-cross-compiling-example

Where working is a scratch directory for intermediate build files.

Running

To run, use adb to push the resulting files to the Android device. Rather than run Python directly, which requires setting LD_LIBRARY_PATH, run the script bin/apython, which will set it for you. Examples are in the examples directory.