I was trying to set up my personal mac for playing around with calabash. So I started following the instructions mentioned here. When I ran the command “gem install calabash-android” I got the below error.
Then after googling on web I realised that this is happening because I upgraded my Xcode post the Mountain Lion update. So now I am running Xcode version 4.6.
Once you install Xcode, you will have to install “Command Line Tools“. This will be available under XCode -> Preferences -> Downloads.
Once the command line tool is installed try running the following command in terminal: which make and you will see the result as “/usr/bin/make“.
Then I tried running the gem install calabash command again and it worked.