To build and install cayenne do
gunzip < cayenne-YYYY-MM-DD.tgz | tar xf -
cd Cayenne
make
make install
If you don't want to install in /usr/local/bin and
/usr/local/lib/cayenne you can do
make BINDIR=foo CAYENNEDIR=bar install
In this case you also need to set the environment variable
CAYENNEDIR=bar when running cayenne.
There is some documentation in the html directory.
There's plenty of bugs, so tread carefully. :)
-- Lennart