Problem with compiling postgresql-8.2.1

[Bernd Nicklas <info(at)namica(dot)com>]

Hello,

i've got a problem with compiling postgresql-8.2.1.
My operating system distribution is ubuntu-6.10 with gnu make-3.81-2 and 
gcc-4.1.1.
The last few output lines of gmake are:

make -C makefiles all
make[2]: Entering directory 
`/home/sue/Desktop/Setups/postgresql-8.2.1/src/makefiles'
make[2]: Nothing to be done for `all'.
make[2]: Leaving directory 
`/home/sue/Desktop/Setups/postgresql-8.2.1/src/makefiles'
make -C test/regress all
make: Entering an unknown directory
make: *** test/regress: No such file or directory.  Stop.
make: Leaving an unknown directory
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/sue/Desktop/Setups/postgresql-8.2.1/src'
make: *** [all] Error 2

What went wrong?

Best regards and thanks for your help!
Bernd Nicklas