FreeBSD & MySQL configure option

Hi,
Is it possible to install MySQL like

# cd /usr/ports/databases/mysql50-server
# ./configure --prefix=/usr/local/mysql
# make install clean

so that all MySQL files are installed under that "/usr/local/mysql" folder.

or the only choice is

# cd /usr/ports/databases/mysql50-server
# make install clean

where files are scattered all over in "/usr/local/"

I checked MySQL.com and I could not find a source code for FreeBSD
so that I could install MySQL with
./configure --prefix=/usr/local/mysql
option.

All I found was precompiled binaries.

Thank you.

If you compile from ports, you're installing per the FreeBSD standards, so you can't set the prefix there.
Installing everything under a separate directory (/usr/local/mysql) is actually a bit non-standard, so you should have good reasons for doing so. If you do want to go with this approach, you can download the source code from mysql's website in source form:
http://dev.mysql.com/downloads/mysql/5.0.html#source
and then unzip with tar -zxf option and compile it with the non-standard prefix.