Android

Building Android from master branch

This is a simple guide how to build Minetest for android on Ubuntu on a 64 bit system. It's mostly about preparation, as, once everything is set up, minetest only needs cd build/android && make to compile.

Required Packages

Git and make are neccessary: <br\>
sudo apt-get update
sudo apt-get install make subversion git-core build-essential

As your architecture is 64 bit, you need additional packages:

sudo apt-get install --force-yes libgd2-xpm ia32-libs ia32-libs-multiarch

Getting sdk and ndk

wget https://dl.google.com/android/android-sdk_r24.0.1-linux.tgz -O android-sdk.tgz <br\> wget https://dl.google.com/android/ndk/android-ndk-r9d-linux-x86_64.tar.bz2 -O android-ndk.tar.bz2 <br\> tar xf android-sdk.tgz <br\> tar xf android-ndk.tar.bz2 <br\> android-sdk-linux/tools/android update sdk --no-ui --filter platform-tool,android-10,build-tools-21.1.2 <br\>
The last line will ask for your confirmation multiple times.

Obtaining and building minetest

Clone minetest, and build it:

git clone --depth 1 https://github.com/minetest/minetest.git <br\> cd minetest/build/android <br\> make <br\>

sfan5's Android port

Building and Running

Building

What you need:

• GNU/Linux
• Android NDK
• Standalone toolchain made with Android NDK (with android_native_app_glue.h copied into <TOOLCHAIN_ROOT>/sysroot/usr/include)

• You need to use Clang as GCC produces broken code

• Android SDK
• Android device
• Git
• CMake
• Ant
• ADB (optional but very useful)

Irrlicht

Clone https://github.com/sfan5/irrlicht-android.

Make sure you have arm-linux-androideabi-gcc (It's ok to use gcc for Irrlicht) and arm-linux-androideabi-g++ usable and run make in source/Irrlicht.

This will build Irrlicht as static and shared library and place it in lib/Linux

Minetest

Clone https://github.com/sfan5/minetest and switch to the android_new branch. Configure it using CMake like this:

$ cmake . \
    -DCMAKE_C_COMPILER=`which arm-linux-androideabi-clang` \
    -DCMAKE_CXX_COMPILER=`which arm-linux-androideabi-clang++` \
    -DCMAKE_FIND_ROOT_PATH=<sysroot of your android toolchain> \
    -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY \
    -DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY \
    -DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=BOTH \
    -DCMAKE_SYSTEM_NAME=Linux \
    -DIRRLICHT_LIBRARY=<path to libIrrlicht.a> \
    -DIRRLICHT_INCLUDE_DIR=<path to include/ of Irrlicht> \
    -DANDROID=1 \
    -DANDROID_SUPPORT_LIBRARY=<path to libandroid_support.a> \
    -DANDROID_SUPPORT_INCLUDE_DIR=<patch to <NDK_DIR>/source/android/support/include> \
    -DRUN_IN_PLACE=1

Now just enter make package. After make is done go into the Android directory and run <SDK_DIR>/tools/android update project --path ..

Then copy the .so using <NDK_DIR>/ndk-build and build the apk using ant debug.

You will then have the resources in minetest-x.x.x.tar.gz and the apk at Android/bin/Minetest-debug.apk. You will only need to do the “Android update project” step once.

Running

For this step you need minetest-x.x.x.tar.gz and Minetest-debug.apk from the previous step.

Put all resource files & folders (builtin, client, ...) into /sdcard/minetest on your Android device. Install Minetest-debug.apk.

Now touch the Minetest icon and the lovely main menu should appear.

Development notes

General notes

• cURL does not work

• TLS support is needed too

• Idea: Use GnuTLS or LibreSSL, because OpenSSL is a nightmare to cross-compile

• Add Bluetooth support for local multiplayer (maybe)

• see (http://people.csail.mit.edu/albert/bluez-intro/x559.html or http://people.csail.mit.edu/albert/bluez-intro/x502.html) and https://github.com/sfan5/minetest/tree/bluetooth

• OpenAL with Android support: https://github.com/AerialX/openal-soft-android

Getting stuff to work without libCrystax

• Frequently crashes after going through std::ios_base::~ios_base()

• Probably related to removal of libCrystax

• Pressing a button now roughly equals taking away a wood piece of a unstable Jenga tower
• Options:

• Use libc++

• Currently a problem with includes

• avoid destructing any streams

• This is not a good idea

• Go back to Crystax toolchain

• Uhh… no!