Install_name_tool when running virtualenv on Mac OSX Lion (with Xcode)

Question

When I try to run mkvirtualenv with python 2.6, I get an error:

Failed to call install_name_tool - you must have Apple development tools installed

I installed Xcode. (It is actually installed, not just downloaded and awaiting installation).

Command: which install_name_tool gives me nothing. Why can't I name it?

Answer 1

If you are using Xcode 4.3, you will have to install the command-line tool package, available on the "Downloads" tab in the settings.