Compiling ScummVM/Android

Compiling ScummVM for Android

This page describes how you build Android packages from the ScummVM source tree.

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 1.6, API 4
• SDK Platform Android 2.2, API 8

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

• MAD to play .mp3 audio files
• Tremor (lowmem branch) to play .ogg 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

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. 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