Not able to install capybara-webkit using bundle install command in Rails 4

Installation instructions are in the capybara-webkit wiki - https://github.com/thoughtbot/capybara-webkit/wiki/Installing-Qt-and-compiling-capybara-webkit . You'll want to install Qt 5.5.1 (5.6 is only supported if you build the QtWebKit module separately)

Ubuntu

sudo apt-get update
sudo apt-get install qt5-default libqt5webkit5-dev gstreamer1.0-plugins-base gstreamer1.0-tools gstreamer1.0-x

'qmake' is not recognized likely means that Qt is not installed

brew update
cd $( brew --prefix )/Homebrew/Library/Taps/homebrew/homebrew-core
git checkout 9ba3d6ef8891e5c15dbdc9333f857b13711d4e97 Formula/[email protected]
brew install [email protected]
echo 'export PATH="$(brew --prefix [email protected])/bin:$PATH"' >> ~/.bashrc

Complete installation process is here