Install unifdef Package on Mac in Easy Steps

What is “unifdef” Package?

Selectively process conditional C preprocessor directives
For more details: http://dotat.at/prog/unifdef/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install unifdef.

  brew install unifdef

Now, use unifdef!