7.4beta4: make check broken?

Hi,
the following configure/make batch with postgresql-7.4beta4
results with the error below.
That is to say, make does work fine,
but make check results in an error. Oviously the target-directory
given with prefix is already used in some way with make check
(when make install is not yet run). This error did not occur with 7.3
versions, where the make test seemed to restrict itself to the source
directory and did not touch the target directory given by prefix.
The OS is Suse 8.2 with bison updated to 1.85 as required because of a
resp. warning from configure.

SourceDir="/usr/local/src/postgresql-7.4beta4"
TargetDir="/opt/doka/"
PORTNR=5432
export LC_LANG=de_DE(at)euro
export LC_COLLATE=de_DE
datum=`date +%d%b%Y_%H%M`
make clean
./configure --prefix=$TargetDir/pgsql \
--enable-nls='de' \
--with-pgport=$PORTNR \
--with-tcl \
--with-odbc \
--with-perl \
--with-openssl \
--with-python
make check

This did result in the following ...
============== removing existing temp installation ==============
============== creating temporary installation ==============
============== initializing database system ==============
============== starting postmaster ==============
running on port 65432 with pid 48
============== creating database "regression" ==============
/usr/local/src/postgresql-7.4beta4/src/test/regress/./tmp_check/install//opt/doka//pgsql/bin/createdb:
relocation error:
/us/local/src/postgresql-7.4beta4/src/test/regress/./tmp_check/install//opt/doka//pgsql/bin/createdb:
undefined symbol: get_proname
pg_regress: createdb failed
make[2]: *** [check] Fehler 2
make[2]: Leaving directory
`/usr/local/src/postgresql-7.4beta4/src/test/regress'
make[1]: *** [check] Fehler 2
make[1]: Leaving directory `/usr/local/src/postgresql-7.4beta4/src/test'
make: *** [check] Fehler 2
postgres(at)zs:/usr/local/src/postgresql-7.4beta4>

Regards
Christoph Becker