I am currently building it - OS X Lion. First, I had to install wget:) Then, I got a certificate error on the https, so I pasted the command into Firefox and got the tarball. After copying it to the julia dir, I edited the tar command and ran it. Finally, doing make right now.

Here is the certificate error: Connecting to github.com (github.com)|207.97.227.239|:443... connected. ERROR: The certificate of `github.com' is not trusted. ERROR: The certificate of `github.com' hasn't got a known issuer.