Get sources using the following command

svn co<project>/trunk

where <project> is: gateway, sqlbox or opensmppbox.

Once you have the kannel source, navigate to source directory which typically is

Here you can compile kannel wtih mysql support or without mysql.

Install Kannel Without Mysql Support

./configure --enable-start-stop-daemon
# make
# make install

Install Kannel With Mysql Support

./configure --with-mysql --enable-start-stop-daemon
# make
# make install

Once you have installed kannel you can locate the install directory by using following on

whereis bearerbox
bearerbox: /usr/local/sbin/bearerbox

whereis smsbox
smsbox: /usr/local/sbin/smsbox

If you face any issue in installation, please leave comments.