After installing GNUnet, unpack the GNU Taler exchange tarball, change into the resulting directory, and proceed as follows: .. code-block:: console $ ./configure [--prefix=EXCHANGEPFX] \ [--with-gnunet=GNUNETPFX] $ # Each dependency can be fetched from non standard locations via $ # the '--with-' option. See './configure --help'. $ make # make install If you did not specify a prefix, the exchange will install to ``/usr/local``, which requires you to run the last step as ``root``. You have to specify ``--with-gnunet=/usr/local`` if you installed GNUnet to ``/usr/local`` in the previous step.