[Lazarus] Lazarus 2 Installation under Raspbian Stretch fails

[Joe]

Hi,

on a Pi 3B+ under Stretch I did this:

~ $ mkdir lazarus-2a
sudo chmod a+w lazarus-2a
svn co https://svn.freepascal.org/svn/lazarus/trunk lazarus-2a
cd lazarus-2a
make clean all

I get this error message:
...
Compiling fcllaz
home/pi/lazarus-2a/packager/registration/fcllaz.pas(11,3)  Fatal: 
(10022) Can't find unit db used by fcllaz
Fatal: (1018) Compilation aborted

What's wrong?
BTW: fpc -iW returns "3.0.4".

Regards --  Joe