Install gtk+3 on Mac with Brew

Guide To Install gt+3 On Mac

gtk+3 Package Installation on Mac

About abcde : Toolkit for creating graphical user interfaces!
More Information: https://gtk.org/
Steps:

  1. Launch Terminal by pressing command+space, type terminal and hit Enter key.
  2. Run
    ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null
  3. Install
    brew install gtk+3

Done!