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Building in Mac OS X

Building in Mac OS X can be accomplished in just a few steps:

  • Install general development tools (clang, make, git)
  • Checkout Betaflight sourcecode through git
  • Install ARM GCC compiler
  • Build the code

Install general development tools (clang, make, git)

Open up a terminal and run make. If it is installed already, you should see a message like this, which means that you already have the required development tools installed:

make: *** No targets specified and no makefile found.  Stop.

If it isn't installed yet, you might get a popup like this. If so, click the "install" button to install the commandline developer tools:

Prompt to install developer tools

If you just get an error like this instead of a helpful popup prompt:

-bash: make: command not found

Try running xcode-select --install instead to trigger the popup.

If that doesn't work, you'll need to install the XCode development environment from the App Store. After installation, open up XCode and enter its preferences menu. Go to the "downloads" tab and install the "command line tools" package.

Checkout Betaflight sourcecode through git

Enter your development directory and clone the Betaflight repository using the "HTTPS clone URL" which is shown on the right side of the Betaflight GitHub page, like so:

git clone

This will download the entire betaflight repository for you into a new folder called "betaflight".

Install ARM GCC compiler

To install the needed compiler you just need to enter the betaflight directory and run make arm_sdk_install

Build the code

Enter the betaflight directory and run make TARGET=BETAFLIGHTF4 to build firmware for the BETAFLIGHTF4. When the build completes, the .hex firmware should be available as obj/betaflight_3.5.2_BETAFLIGHTF4.hex for you to flash using the Betaflight Configurator.

Updating to the latest source

If you want to erase your local changes and update to the latest version of the Betaflight source, enter your betaflight directory and run these commands to first erase your local changes, fetch and merge the latest changes from the repository, then rebuild the firmware:

git reset --hard
git pull