macos.md

MacOS specifics

Preparing build environment

With Homebrew:

brew update
brew upgrade
brew install binutils libusb
brew cask install gcc-arm-embedded # This is where you get the ARM cross-compiling stuff
sudo easy_install pip
sudo pip2 install pyusb

Fix the environment statements:

The scripts look for python2, but you likely just have that installed as (system) python. Hence:

sudo ln -s /usr/bin/python /usr/bin/python2

After this, make flash as expected.