setup.sh

#!/bin/bash
set -e
set -x

# Android NDK r12b
export NDK_VERSION="android-ndk-r14b"
export NDK_OSFAMILY="linux"
export SWIG_VERSION="swig-3.0.8"

export NDK_PLATFORM="android-9"

# Require JAVA_HOME
if [ -z "$JAVA_HOME" ]; then
    echo "ERROR You should set JAVA_HOME"
    echo "example: \`export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64\`"
    echo "Exiting!"
    exit 1
fi

function ndk_setup {
    ARCH=$(uname -m)
    if [ $ARCH != "x86_64" ]; then
      $ARCH = "x86"
    fi

    echo "Downloading NDK for ${ARCH}"
    ZIP="${NDK_VERSION}-${NDK_OSFAMILY}-${ARCH}.zip"

    wget https://dl.google.com/android/repository/${ZIP}
    unzip ${ZIP}

    export ANDROID_NDK_HOME=${PWD}/${NDK_VERSION}
}

function ndk_cleanup {
    rm -rf ${NDK_VERSION}* 
}

#
# SWIG 2.0
#
function swig_setup {
    cd jni

    wget https://prdownloads.sourceforge.net/swig/${SWIG_VERSION}.tar.gz
    tar -xvf ${SWIG_VERSION}.tar.gz
    
    cd ${SWIG_VERSION}

    ./autogen.sh
    ./configure
    make -j 5
    sudo make install

    cd ../..
}

function swig_cleanup {
    cd jni

    rm -rf ${SWIG_VERSION}*

    cd ..
}

#
# install libsodium from the repository
#
function setup_libsodium {
    rm -rf libsodium

    git submodule init
    git submodule update

    cd libsodium

    # use stable branch
    # git fetch && git checkout origin/stable

    ./autogen.sh

    # Build local
    ./configure
    make && make check
    sudo make install
    sudo ldconfig

    # Disable minimal in android builds
    sed --in-place '/--enable-minimal/d' ./dist-build/android-build.sh

    # Build android
    ./dist-build/android-arm.sh
    ./dist-build/android-armv7-a.sh
    ./dist-build/android-mips32.sh
    ./dist-build/android-x86.sh
    cd ..
}

# Install swig and compile the JNI with libsodium
function compile_jni {
    cd jni
    ./compile.sh

    export PATH=$PATH:$ANDROID_NDK_HOME
    ndk-build clean
    ndk-build
    cd ..
}

# Add auto-cleanup before the script runs
ndk_cleanup
#swig_cleanup

# Download and install
ndk_setup
#swig_setup

# Compile the libraries
setup_libsodium
compile_jni

# Cleanup
ndk_cleanup
#swig_cleanup