installing problem on Debian

[Ciolo_-^DusT^-_WebMaster]

*** Warning: Linking the shared library rlm_perl.la against the
*** static library /usr/lib/perl/5.8/auto/DynaLoader/DynaLoader.a is not 
portable!
rm -fr .libs/rlm_perl.la .libs/rlm_perl.* .libs/rlm_perl-1.0.0-pre0.*
gcc -shared  rlm_perl.lo  -L/usr/local/lib 
/usr/lib/perl/5.8/auto/DynaLoader/DynaLoader.a -L/usr/lib/perl/5.8/CORE -lperl 
 -ldl -lm -lpthread -lc -lcrypt -lnsl -lresolv -lpthread  -Wl,-E -Wl,-soname 
 -Wl,rlm_perl-1.0.0-pre0.so -o .libs/rlm_perl-1.0.0-pre0.so
/usr/bin/ld: cannot find -lperl
collect2: ld returned 1 exit status
make[6]: *** [rlm_perl.la] Error 1
make[6]: Leaving directory 
`/root/freeradius-snapshot-20040517/src/modules/rlm_perl'
make[5]: *** [common] Error 1
make[5]: Leaving directory `/root/freeradius-snapshot-20040517/src/modules'
make[4]: *** [all] Error 2
make[4]: Leaving directory `/root/freeradius-snapshot-20040517/src/modules'
make[3]: *** [common] Error 1
make[3]: Leaving directory `/root/freeradius-snapshot-20040517/src'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/root/freeradius-snapshot-20040517/src'
make[1]: *** [common] Error 1
make[1]: Leaving directory `/root/freeradius-snapshot-20040517'
make: *** [all] Error 2


this is the error I have every time I try to "make"

I install it with  ./configure --with-experimental-modules

and I have the same error with all the release I try... also with the lst 
one.

thanks in advantage

byez
Polverni Davide