#!/bin/sh
#
# Copyright (C) 2016 Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

set -e

BASEDIR=$(pwd)

GOLD_LD=/usr/bin/ld.gold
BFD_LD=/usr/bin/ld.bfd

mkdir -p $BASEDIR/toolchain/clang
cd $BASEDIR/toolchain/clang

# build llvm and clang binaries
cmake -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="X86;ARM" \
      -DLLVM_EXTERNAL_CLANG_SOURCE_DIR=../../external/clang \
      -DCMAKE_C_FLAGS="-O2" ../../external/llvm/
make -j $(nproc)

cd $BASEDIR


# build binutils for arm
mkdir -p $BASEDIR/toolchain/gcc/arm/arm-linux-androideabi/build/binutils
cd $BASEDIR/toolchain/gcc/arm/arm-linux-androideabi/build/binutils
./../../../../../src/binutils/binutils-2.25/configure \
    --prefix=$BASEDIR/toolchain/gcc/arm/arm-linux-androideabi/install \
    --target=arm-linux-androideabi \
    --enable-gold=default \
    --enable-plugins \
    --disable-werror \

make -j $(nproc)
make install

# build gcc for arm
cd .. && mkdir -p gcc && cd gcc
./../../../../../src/gcc/gcc-4.9/configure \
    --prefix=$BASEDIR/toolchain/gcc/arm/arm-linux-androideabi/install \
    --target=arm-linux-androideabi \
    --host=x86_64-linux-gnu \
    --build=x86_64-linux-gnu \
    --with-gnu-as \
    --with-gnu-ld \
    --enable-languages=c,c++ \
    --enable-cloog-backend=isl \
    --disable-libssp \
    --enable-threads \
    --disable-nls \
    --disable-libmudflap \
    --enable-libgomp \
    --disable-libstdc__-v3 \
    --disable-sjlj-exceptions \
    --disable-shared \
    --disable-tls \
    --disable-libitm \
    --with-float=soft \
    --with-fpu=vfp \
    --with-arch=armv5te \
    --enable-target-optspace \
    --enable-initfini-array \
    --disable-bootstrap \
    --disable-libquadmath \
    --enable-plugins \
    --with-sysroot=$BASEDIR/prebuilts/ndk/current/platforms/android-21/arch-arm \
    --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' \
    --enable-gnu-indirect-function \
    --disable-libsanitizer \
    --enable-graphite=yes \
    --enable-eh-frame-hdr-for-static \
    --enable-gold=default \
    --program-transform-name='s&^&arm-linux-androideabi-&'

make -j $(nproc)
make install


# build binutils for host
cd ../../../../ && mkdir -p host/build/binutils
cd host/build/binutils
./../../../../src/binutils/binutils-2.25/configure \
    --prefix=$BASEDIR/toolchain/gcc/host/install \
    --target=x86_64-linux \
    --host=x86_64-linux-gnu \
    --build=x86_64-linux-gnu \
    --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' \
    --enable-plugins \
    --disable-ld \
    --disable-werror \

make -j $(nproc)
make install

# build gcc for host
cd .. && mkdir -p gcc && cd gcc
./../../../../src/gcc/gcc-4.9/configure \
    --prefix=$BASEDIR/toolchain/gcc/host/install \
    --target=x86_64-linux \
    --host=x86_64-linux-gnu \
    --build=x86_64-linux-gnu \
    --enable-multiarch \
    --with-arch-32=i686 \
    --with-abi=m64 \
    --with-arch=x86-64 \
    --with-multilib-list=m32,m64 \
    --disable-nls \
    --enable-target-optspace \
    --disable-plugin \
    --disable-docs \
    --disable-bootstrap \
    --disable-libgomp \
    --disable-libmudflap \
    --disable-libquadmath \
    --disable-libsanitizer \
    --enable-languages=c,c++ \
    --with-ld=$GOLD_LD

make -j $(nproc)
make install

# we need to link against the correct stdatomic.h
cd ../../install/lib/gcc/x86_64-linux/4.9.x/include
rm stdatomic.h
ln -s ../../../../../../../../../bionic/libc/include/stdatomic.h stdatomic.h
# link ld from /usr
cd ../../../../../x86_64-linux/bin/
rm -f ld ld.gold ld.bfd
ln -s "$GOLD_LD" ld
ln -s "$GOLD_LD" ld.gold
ln -s "$BFD_LD" ld.bfd

cd $BASEDIR

# an empty Android.mk is needed (Android.mk in jack and jill repo should be
# ignored)
touch toolchain/src/Android.mk

# clang needs this header as a system header
mkdir -p toolchain/headers/clang
cd toolchain/headers/clang
if [ ! -f stdatomic.h ]
then
    ln -s ../../../bionic/libc/include/stdatomic.h stdatomic.h
fi


#############################
# build jack/jill toolchain

# first the simple lib
cd ../../src/jack/simple
# Try to use mvn-debian and if it's not available, try to use mvn
$(basename $(which mvn-debian || which mvn)) \
	clean package -Dmaven.test.skip=true
cd ..

# then jack
ant clean dist

# setup the jack/jill binary folder
cp jack/etc/Android.mk.build ../../jack_jill/Android.mk
cd ../../jack_jill
cp build/jack/dist/jack .
chmod +x jack
cp build/jack/dist/jack-admin .
chmod +x jack-admin
cp build/jack/dist/jack.jar .
cp build/jack/dist/jack-launcher.jar .

# finally the jill.jar
cd ../src/jill
ant clean dist
cp ../../jack_jill/build/jill/dist/jill.jar ../../jack_jill/

cd $BASEDIR