AVR toolchain compilation

This document is an adapted version of AVR libc tutorial.

Create a new directory, where the toolchain source files will be stored temporarily.

Download GCC and GAS patches, save them in newly created directory.

Run the following script! You will be asked for a password, as sudo command is used. User account with administrator (sudo) rights is required. wget tool is required to fetch source files from GNU sites.

#!/bin/bash

# will be installed under /usr/local. Change here, if other destination is needed
export PREFIX=/usr/local

PATH="$PREFIX/bin:$PATH"

# Patches
tar -xvzf avr-new-device-patch.tar.gz

# GMP: 
echo "Fetching GMP, required by GCC..."
wget ftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-4.3.2.tar.bz2
bunzip2 -c gmp-4.3.2.tar.bz2 | tar xf -
mkdir gmp-4.3.2/obj
cd gmp-4.3.2/obj
echo "Building GMP..."
../configure --prefix=$PREFIX
make
sudo make install
cd ../..

# MPFR:
echo "Fetching MPFR, required by GCC..."
wget ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-2.4.2.tar.bz2
bunzip2 -c mpfr-2.4.2.tar.bz2 | tar xf -
mkdir mpfr-2.4.2/obj
cd mpfr-2.4.2/obj
echo "Building MPFR..."
../configure --prefix=$PREFIX
make
sudo make install
cd ../..

# MPC:
echo "Fetching MPC, required by GCC..."
wget ftp://gcc.gnu.org/pub/gcc/infrastructure/mpc-0.8.1.tar.gz
tar -xzf mpc-0.8.1.tar.gz
mkdir mpc-0.8.1/obj
cd mpc-0.8.1/obj
echo "Building MPC..."
../configure --prefix=$PREFIX
make
sudo make install
cd ../..
 
# BINUTILS:
echo "Fetching binutils..."
wget http://ftp.gnu.org/gnu/binutils/binutils-2.20.tar.gz
tar -xzf binutils-2.20.tar.gz
cd binutils-2.20
cp ../gas-patch-newdevices.patch ./
echo "Building binutils..."
patch -p0 < gas-patch-newdevices.patch
mkdir obj-avr
cd obj-avr
../configure --prefix=$PREFIX --target=avr --disable-nls
make
sudo make install
cd ../..

# GCC:
echo "Fetching GCC…"
wget http://ftp.gnu.org/gnu/gcc/gcc-4.5.0/gcc-core-4.5.0.tar.gz
tar -xzf gcc-core-4.5.0.tar.gz
cd gcc-4.5.0
cp ../gcc-new-device-support.patch ./
echo "Building GCC..."
patch -p0 < gcc-new-device-support.patch
mkdir obj-avr
../configure --prefix=$PREFIX --target=avr --enable-languages=c,c++ --disable-nls --disable-libssp --with-dwarf2