Fix Homebrew – You have no /usr/bin/cc (Xcode)

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I recently did a fresh install of OS X Lion on my Macbook Pro

I installed XCode, homebrew, and git.

After trying to install mysql via homebrew:

I received this error:

Error: Failed executing: ./configure –prefix=/usr/local/Cellar/readline/6.2.2 –mandir=/usr/local/Cellar/readline/6.2.2/share/man –infodir=/usr/local/Cellar/readline/6.2.2/share/info –enable-multibyte
If `brew doctor’ does not help diagnose the issue, please report the bug:
https://github.com/mxcl/homebrew/wiki/checklist-before-filing-a-new-issue

So, I did what I was told, and ran:

This returned:

You have no /usr/bin/cc. This will cause numerous build issues. Please
reinstall Xcode.

But, Xcode is installed
After some googling (which if you’re reading this, you’ll notice there’s not a lot of results), I found the solution.

Xcode needs the Command line tools installed.

To do this, open Xcode, click the Xcode menu, and select preferences.
Click install next to Command line tools: