perl install problem with pg7.1

Hi devs,

If I try to install postgress7.1 in a temporary directory using $DESTDIR
it fails with the
following message:

*****
* Skipping the installation of the Perl module for lack of permissions.
* To install it, change to the directory
/mnt/cdrom/tmp/portage/postgresql-7.1/work/postgresql-7.1/src/interfaces/perl5,

* become the appropriate user, and do `make install'.
*****

this also happens if I run

make PREFIX=[mytmpdir] install

(this worked for all other perl modules I made packages from).

Installing directly works (make install), but I must make a package for
postgress so I need to install to a temporary dir.

Here is the output from perl -V:
--------------------------------------------------------------------------

Summary of my perl5 (revision 5.0 version 6 subversion 1) configuration:

Platform:
osname=linux, osvers=2.4.2-ac13, archname=i686-linux
uname='linux linux.bagwan 2.4.2-ac13 #3 smp sam apr 7 01:08:28 cest
2001 i686 unknown '
config_args='-des -Dprefix=/usr -Dd_dosuid -Dd_semctl_semun -Di_gdbm
-Di_db -Di_ndbm -Duseshrplib -Duselargefiles -Darchname=i686-linux'
hint=recommended, useposix=true, d_sigaction=define
usethreads=undef use5005threads=undef useithreads=undef
usemultiplicity=undef
useperlio=undef d_sfio=undef uselargefiles=define usesocks=undef
use64bitint=undef use64bitall=undef uselongdouble=undef
Compiler:
cc='cc', ccflags ='-fno-strict-aliasing -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64',
optimize='-O2 -mpentiumpro -march=pentiumpro',
cppflags='-fno-strict-aliasing'
ccversion='', gccversion='2.95.3 20010315 (release)',
gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize=8
alignbytes=4, usemymalloc=n, prototype=define
Linker and Libraries:
ld='cc', ldflags =' -L/usr/local/lib'
libpth=/usr/local/lib /lib /usr/lib
libs=-lnsl -lndbm -lgdbm -ldb -ldl -lm -lc -lcrypt -lutil
perllibs=-lnsl -ldl -lm -lc -lcrypt -lutil
libc=/lib/libc-2.2.2.so, so=so, useshrplib=true, libperl=libperl.so
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic
-Wl,-rpath,/usr/lib/perl5/5.6.1/i686-linux/CORE'
cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'

Characteristics of this binary (from libperl):
Compile-time options: USE_LARGE_FILES
Built under linux
Compiled at Apr 16 2001 17:23:11
@INC:
/usr/lib/perl5/5.6.1/i686-linux
/usr/lib/perl5/5.6.1
/usr/lib/perl5/site_perl/5.6.1/i686-linux
/usr/lib/perl5/site_perl/5.6.1
/usr/lib/perl5/site_perl/5.6.0/i686-linux
/usr/lib/perl5/site_perl/5.6.0
/usr/lib/perl5/site_perl
---------------------------------------------------------------------------------

I'm using the pgsql_perl5 version included in postgress7.1 and i applied
the readline4.2
patch.

Any suggestions?

bye achim~