Standard Setup of Toolchain for Mac OS¶

Install Prerequisites¶

install pip:
```
sudo easy_install pip
```
install pyserial:
```
sudo pip install pyserial
```

Toolchain Setup¶

ESP8266 toolchain for macOS is available for download from Espressif website:

https://dl.espressif.com/dl/xtensa-lx106-elf-macos-1.22.0-100-ge567ec7-5.2.0.tar.gz

Download this file, then extract it in ~/esp directory:

mkdir -p ~/esp
cd ~/esp
tar -xzf ~/Downloads/xtensa-lx106-elf-macos-1.22.0-100-ge567ec7-5.2.0.tar.gz

The toolchain will be extracted into ~/esp/xtensa-lx106-elf/ directory.

To use it, you will need to update your PATH environment variable in ~/.profile file. To make xtensa-lx106-elf available for all terminal sessions, add the following line to your ~/.profile file:

export PATH=$PATH:$HOME/esp/xtensa-lx106-elf/bin

Alternatively, you may create an alias for the above command. This way you can get the toolchain only when you need it. To do this, add different line to your ~/.profile file:

alias get_lx106="export PATH=$PATH:$HOME/esp/xtensa-lx106-elf/bin"

Then when you need the toolchain you can type get_lx106 on the command line and the toolchain will be added to your PATH.

Next Steps¶

To carry on with development environment setup, proceed to section Get ESP8266_RTOS_SDK.