Compiling ScummVM for Android

This page describes how you build Android packages from the ScummVM source tree. For help compiling this on Windows, see the separate article, Compiling ScummVM/Android (on Windows).

Mandatory tools

Android SDK r09 as of this writing
Android NDK r5b as of this writing

Use the SDK Manager to install:

Android SDK Tools
Android SDK Platform-tools
SDK Platform Android 4.0, API 14

Set the ANDROID_SDK environment variable to the root directory of the SDK, and ANDROID_NDK to the root directory of the NDK.

Optional libraries

Tremor (lowmem branch) to play .ogg audio files
MAD to play .mp3 audio files
FLAC to play lossless .flac files

Again, you have two options:

Precompiled binaries

Get this archive and extract it to e.g. /opt/android.

Build the libraries yourself

Here's a a simple script to set up a shell for crosscompiling:

#!/bin/sh

PREFIX=${ANDROID_NDK}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-
export CC=${PREFIX}gcc
export CXX=${PREFIX}g++
export AS=${PREFIX}gcc
export LD=${PREFIX}gcc
export AR=${PREFIX}ar cru
export RANLIB=${PREFIX}ranlib
export STRIP=${PREFIX}strip
export OBJCOPY=${PREFIX}objcopy

export MACHDEP="--sysroot=$ANDROID_NDK/platforms/android-4/arch-arm -g -mandroid -mthumb-interwork"

export CFLAGS="${MACHDEP} -Os -Wall -mandroid -msoft-float -march=armv5te -mtune=xscale"

export CXXFLAGS="${CFLAGS}"

export LDFLAGS="${MACHDEP}"

echo "./configure --host=arm --prefix=/opt/android/3rd-android-4-armeabi"

Save it to a file (like android-4-eabi.sh) and run

. ./android-4-eabi.sh

in your shell. Build systems should now use the correct tools.

Tremor

Get a SVN checkout (r17852. as of this writing):

svn co http://svn.xiph.org/trunk/Tremor

configure it:

./autogen.sh --host=arm --prefix=/opt/android/3rd-android-4-armeabi --enable-low-accuracy --enable-64kHz-limit

and finally build & install it:

make
make install

MAD

Get a tarball of the latest stable version here (v0.15.1b as of this writing) and extract it.

configure it:

./autogen.sh --host=arm --prefix=/opt/android/3rd-android-4-armeabi --enable-speed --enable-fpm=arm --disable-aso

and finally build & install it:

make
make install

FLAC

Get a tarball of the latest stable version here (v1.2.1 as of this writing) and extract it.

configure it:

./configure --prefix=/opt/android/3rd-android-4-armeabi --disable-largefile --disable-thorough-tests --disable-doxygen-docs --disable-xmms-plugin --disable-cpplibs --disable-ogg --disable-oggtest --disable-rpath

and build & install the required parts:

make -C src/libFLAC
make -C src/libFLAC install
make -C include install

Compiling

The Android port can be compiled with the configure script.

Set the ANDROID_SDK environment variable to the root directory of the SDK, and ANDROID_NDK to the root directory of the NDK. Add the directory of the toolchain binaries from the NDK to your PATH. This directory differs, on Linux its $ANDROID_NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin.

The most basic way to accomplish this is to run:

./configure --host=android --enable-plugins --default-dynamic
make

The script supports various arguments, which you can use to en- or disable features, see ./configure --help.

If you want support for additional libraries, you need cross-compiled binaries. If you followed the above description and have those libraries in /opt/android/3rd-android-4-armeabi, the configure command line would look like this:

./configure --host=android  --enable-plugins --default-dynamic --with-tremor-prefix=/opt/android/3rd-android-4-armeabi --with-mad-prefix=/opt/android/3rd-android-4-armeabi --with-flac-prefix=/opt/android/3rd-android-4-armeabi