#!/bin/sh
set -e

PREFIX="$PWD/toolchain"
TARGET=avr
export CFLAGS='-Os -pipe'
export CXXFLAGS="$CFLAGS"
export PATH="$PREFIX/bin:$PATH"
export MAKEFLAGS="-j$(nproc)"

mkdir -p "$PREFIX/src"
( cd "$PREFIX/src"
    wget -c https://ftp.gnu.org/gnu/binutils/binutils-2.30.tar.xz
    wget -c https://ftp.gnu.org/gnu/gcc/gcc-8.1.0/gcc-8.1.0.tar.xz
    wget -c https://ftp.gnu.org/gnu/gmp/gmp-6.1.2.tar.xz
    wget -c https://ftp.gnu.org/gnu/mpfr/mpfr-4.0.1.tar.xz
    wget -c https://ftp.gnu.org/gnu/mpc/mpc-1.1.0.tar.gz
    wget -c http://isl.gforge.inria.fr/isl-0.19.tar.xz
    wget -c https://download.savannah.gnu.org/releases/avr-libc/avr-libc-2.0.0.tar.bz2
    wget -c https://download.savannah.gnu.org/releases/avrdude/avrdude-6.3.tar.gz
)

( cd "$PREFIX/src"
    rm -rf binutils-*/
    tar xf binutils-*.tar.xz
    cd binutils-*/
    mkdir build
    cd build
    ../configure --prefix="$PREFIX" --target="$TARGET" --disable-nls
    make
    make install
)

( cd "$PREFIX/src"
    rm -rf gcc-*/
    tar xf gcc-*.tar.xz
    cd gcc-*/
    tar xf ../gmp-*.tar.xz
    tar xf ../mpfr-*.tar.xz
    tar xf ../mpc-*.tar.gz
    tar xf ../isl-*.tar.xz
    mv gmp-*/ gmp
    mv mpfr-*/ mpfr
    mv mpc-*/ mpc
    mv isl-*/ isl
    sed -i -e 's/\.\/fixinc\.sh/-c true/' gcc/Makefile.in
    mkdir -p "$PREFIX/$TARGET/include"
    mkdir build
    cd build
    ../configure --prefix="$PREFIX" --target="$TARGET" --enable-languages=c,c++ --disable-nls
    make
    make install
)

( cd "$PREFIX/src"
    rm -rf avr-libc-*/
    tar xf avr-libc-*.tar.bz2
    cd avr-libc-*/
    ./configure --prefix="$PREFIX" --host="$TARGET"
    make
    make install
)

( cd "$PREFIX/src"
    rm -rf avrdude-*/
    tar xf avrdude-*.tar.gz
    cd avrdude-*/
    mkdir build
    cd build
    ../configure --prefix="$PREFIX"
    make
    make install
)

( cd "$PREFIX/src"
    rm -rf binutils-*/
    rm -rf gcc-*/
    rm -rf avr-libc-*/
    rm -rf avrdude-*/
    #find "$PREFIX" -type f -name '*.la' -delete
)

cat > "$PREFIX/env" << EOF
export PATH="$PREFIX/bin:\$PATH"
EOF

echo 'Run "source toolchain/env" before running make!'