Brief process to be able to build MicroPython firmware images.

setup_micropython.sh

echo **********************************
echo ********** Update OS *************
echo **********************************

sudo apt-get update

sudo apt-get dist-upgrade -y

sudo apt-get install build-essential srecord make unrar-free autoconf automake libtool-bin gcc g++ gperf flex bison texinfo gawk ncurses-dev libexpat-dev python python-serial sed git unzip help2man -y

echo **********************************
echo ********* Build Open SDK *********
echo **********************************

cd /opt

sudo git clone --recursive https://github.com/pfalcon/esp-open-sdk.git

sudo chown -R pi:pi /opt/esp-open-sdk

cd esp-open-sdk

make

echo **********************************
echo ********* Set up PATH ************
echo **********************************

cd ~

echo "/opt/esp-open-sdk/xtensa-lx106-elf/bin:$PATH" >> .profile

echo "/opt/esp-open-sdk/esptool:$PATH" >> .profile

echo **********************************
echo ** Clone Micropython Repository **
echo **********************************

cd ~

git clone https://github.com/micropython/micropython.git

cd micropython

git submodule update --init

make -C mpy-cross


echo **********************************
echo ********* Build Firmware *********
echo **********************************

cd ports/esp8266
make clean
make axtls
make