Android-specific notes Unit tests are the first thing we want to run on Android, to get some idea how well, if at all, the basic LO libraraies work. We want to build even unit tests as normal Android apps, i.e. packaged as .apk files, so that they run in a sandboxed environment like that of whatever eventual end-user Android apps there will be that use LO code. Sure, we could quite easily build unit tests as plain Android executables, push them to the device or emulator with adb and run them from adb shell, but that would not be a good test as the environment would be completely different. They would run as root, and not sandboxed. We have no intent to require LibreOffice code to be used only on "rooted" devices etc. All Android apps are basically Java programs. They run "in" a Dalvik virtual machine. Yes, you can also have apps where your code is only native code, written in a compiled language like C or C++. But also also such apps are actually started by system-provided Java bootstrapping code (NativeActivity) running in a Dalvik VM. Such a native app (or actually, "activity") is not built as a executable program, but as a shared object. The Java NativeActivity bootstrapper loads that shared object with dlopen. It is somewhat problematic to construct .apk packages except by using the high-level tools in the Android SDK. At least I haven't figured out how to manually construct an .apk that is properly signed so that it will run in the emulator. (I don't have any Android device...) I only know how to let the SDK Ant tooling do it... A LO Android app would work would something like this: We have a top Java bootstrapping class org.libreoffice.android.Bootstrap that loads a small helper native library liblo-bootstrap.so that implements JNI wrappers for dlopen(), dlsym(), and ELF header scanning coresponding to looking for DT_NEEDED entries with readelf. The Java code then loads the actual native library that corresponds to the LibreOffice-related "program" we want to run. For unit tests, a library that corresponds to cppunittester program. Then through helper functions in liblo-bootstrap it calls a named function in that "program". This Android-specific native code (the lo-bootstrap library) is for now in sal/android, and the Java code in the android "module" (subdirectory right here). --Tor Lillqvist