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This repository contains the GNU AVR Toolchain as formulae for Homebrew.

AVR is a popular family of micro-controllers, used for example in the Arduino project.

Current Versions

  • GCC 9.4.0 - default, provided as avr-gcc or avr-gcc@9
  • GCC 5.5.0 - provided as avr-gcc@5
  • GCC 8.5.0 - provided as avr-gcc@8
  • GCC 10.3.0 - provided as avr-gcc@10
  • GCC 11.3.0 - provided as avr-gcc@11
  • GCC 12.2.0 - provided as avr-gcc@12
  • Binutils 2.40.0 - provided as avr-binutils
  • AVR Libc 2.1.0 - provided as a resource for each GCC formula
  • GDB 10.1 - provided as avr-gdb

Support for older GCC versions (4, 6, 7) has been removed. Please, raise an issue if you need one back.

Installing homebrew-avr formulae

First, make sure you have xcode command line developer tools installed with

$ xcode-select --install

Then, just run the following to install the latest version of avr-gcc:

$ brew tap osx-cross/avr
$ brew install avr-gcc

If you want to install a different version:

$ brew install avr-gcc@{x}

Where {x} being the version number such as avr-gcc@8 or avr-gcc@10

Note: only the default version will be available in your $PATH. The other ones are keg-only and thus won't be available in /usr/local/bin.

You can run brew info avr-gcc or brew info avr-gcc@{x} for more information on the flags available.


brew info avr-gcc, brew help, man brew, or the Homebrew documentation.


This repository is based on the works of: