First time guix build

[Alex Sassmannshausen]

Hello,

I'm trying my hand at building guix and have run into some
problems. I've cloned the git repository à la:
$ git clone git://git.savannah.gnu.org/guix.git
followed by 
$ cd guile; autoreconf -vif
$ ./configure && make

All commands up until make work fine. Unfortunately make
exits with an error: 
make: *** No rule to make target `nix/libstore/schema.sql',
 needed by `nix/libstore/schema.sql.hh'.  Stop.

In the meantime I've successfully build Guix from the 
tarball on the GNU alpha downloads page, but I thought
this error might still be good to mention here — is there
anything obvious I may have done wrong?

Best wishes,

Alex