#!/bin/bash

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

#  amd64 Linux to NaCl.

export NACL_SDK_ROOT="/nacl_sdk/pepper_35"

TARBALL="$1"

if [ -z $1 ]; then

    TARBALL=sdl-nacl.tar.xz

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="nacl-buildbot"

PARENTDIR="$PWD"

set -e

set -x

rm -f $TARBALL

rm -rf $BUILDBOTDIR

mkdir -p $BUILDBOTDIR

pushd $BUILDBOTDIR

# !!! FIXME: ccache?

export CC="$NACL_SDK_ROOT/toolchain/linux_pnacl/bin/pnacl-clang"

export CFLAGS="$CFLAGS -I$NACL_SDK_ROOT/include -I$NACL_SDK_ROOT/include/pnacl"

export AR="$NACL_SDK_ROOT/toolchain/linux_pnacl/bin/pnacl-ar"

export LD="$NACL_SDK_ROOT/toolchain/linux_pnacl/bin/pnacl-ar"

export RANLIB="$NACL_SDK_ROOT/toolchain/linux_pnacl/bin/pnacl-ranlib"

../configure --host=pnacl --prefix=$PWD/nacl-sdl2-installed

$MAKE

$MAKE install

# Fix up a few things to a real install path

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

mkdir -p ./usr

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

popd

tar -cJvvf $TARBALL -C $BUILDBOTDIR usr

rm -rf $BUILDBOTDIR

set +x

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