#!/bin/bash

 # This is the script buildbot.libsdl.org uses to cross-compile SDL2 from

 #  x86 Linux to Raspberry Pi.

 # The final tarball can be unpacked in the root directory of a RPi,

 #  so the SDL2 install lands in /usr/local. Run ldconfig, and then

 #  you should be able to build and run SDL2-based software on your

 #  Pi. Standard configure scripts should be able to find SDL and

 #  build against it, and sdl2-config should work correctly on the

 #  actual device.

 TARBALL="$1"

 if [ -z $1 ]; then

     TARBALL=sdl-raspberrypi.tar.bz2

 fi

 OSTYPE=`uname -s`

 if [ "$OSTYPE" != "Linux" ]; then

     # !!! FIXME

     echo "This only works on x86 or x64-64 Linux at the moment." 1>&2

     exit 1

 fi

 if [ "x$MAKE" == "x" ]; then

     NCPU=`cat /proc/cpuinfo |grep vendor_id |wc -l`

     let NCPU=$NCPU+1

     MAKE="make -j$NCPU"

 fi

 BUILDBOTDIR="raspberrypi-buildbot"

 PARENTDIR="$PWD"

 set -e

 set -x

 rm -f $TARBALL

 rm -rf $BUILDBOTDIR

 mkdir -p $BUILDBOTDIR

 pushd $BUILDBOTDIR

 SYSROOT="/opt/rpi-sysroot"

 export CC="/opt/rpi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-gcc --sysroot=$SYSROOT -I$SYSROOT/opt/vc/include -I$SYSROOT/usr/include -I$SYSROOT/opt/vc/include/interface/vcos/pthreads -I$SYSROOT/opt/vc/include/interface/vmcs_host/linux -L$SYSROOT/opt/vc/lib"

 # -L$SYSROOT/usr/lib/arm-linux-gnueabihf"

 # !!! FIXME: shouldn't have to --disable-* things here.

 ../configure --with-sysroot=$SYSROOT --host=arm-raspberry-linux-gnueabihf --prefix=$PWD/rpi-sdl2-installed --disable-pulseaudio --disable-esd

 $MAKE

 $MAKE install

 # Fix up a few things to a real install path on a real Raspberry Pi...

 perl -w -pi -e "s#$PWD/rpi-sdl2-installed#/usr/local#g;" ./rpi-sdl2-installed/lib/libSDL2.la ./rpi-sdl2-installed/lib/pkgconfig/sdl2.pc ./rpi-sdl2-installed/bin/sdl2-config

 mkdir -p ./usr

 mv ./rpi-sdl2-installed ./usr/local

 popd

 tar -cjvvf $TARBALL -C $BUILDBOTDIR usr

 rm -rf $BUILDBOTDIR

 set +x

 echo "All done. Final installable is in $TARBALL ...";