compile failure with beta3 and --with-perl

Slackware 8.1, linux 2.4.18 i586, gcc version 2.95.3 20010315 (release)

This is perl, v5.6.1 built for i386-linux (is this too old?)

parts from config.log
configure:4214: checking for perl
configure:4232: found /usr/local/bin/perl
configure:4244: result: /usr/local/bin/perl
configure:4253: checking for Perl archlibexp
configure:4256: result: /usr/lib/perl5/i386-linux
configure:4258: checking for Perl privlibexp
configure:4261: result: /usr/lib/perl5
configure:4263: checking for Perl useshrplib
configure:4266: result: false
configure:4269: checking for flags to link embedded Perl
configure:4274: result: -L/usr/local/lib
/usr/lib/perl5/i386-linux/auto/DynaLoader/DynaLoader.a
-L/usr/lib/perl5/i386-linux/CORE -lperl -lnsl -ldl -lm -lc -lcrypt
-lutil

ac_cv_path_PERL=/usr/local/bin/perl

make[4]: Leaving directory
`/usr/local/src/postgresql-7.4beta3/src/pl/tcl/modules'
make[3]: Leaving directory
`/usr/local/src/postgresql-7.4beta3/src/pl/tcl'
make[3]: Entering directory
`/usr/local/src/postgresql-7.4beta3/src/pl/plperl'
gcc -O2 -g -fpic -I. -I/usr/lib/perl5/i386-linux/CORE
-I../../../src/include -c -o plperl.o plperl.c -MMD
plperl.c: In function `plperl_create_sub':
plperl.c:306: warning: passing arg 1 of `perl_call_pv' from incompatible
pointer type
plperl.c:306: warning: passing arg 2 of `perl_call_pv' makes pointer
from integer without a cast
plperl.c:306: too few arguments to function `perl_call_pv'
plperl.c:317: `thr' undeclared (first use in this function)
plperl.c:317: (Each undeclared identifier is reported only once
plperl.c:317: for each function it appears in.)
plperl.c: In function `plperl_call_perl_func':
plperl.c:425: warning: passing arg 1 of `perl_call_sv' from incompatible
pointer type
plperl.c:425: warning: passing arg 2 of `perl_call_sv' makes pointer
from integer without a cast
plperl.c:425: too few arguments to function `perl_call_sv'
plperl.c:437: `thr' undeclared (first use in this function)
plperl.c: In function `plperl_build_tuple_argument':
plperl.c:810: warning: passing arg 1 of `perl_eval_pv' from incompatible
pointer type
plperl.c:810: warning: passing arg 2 of `perl_eval_pv' makes pointer
from integer without a cast
plperl.c:810: too few arguments to function `perl_eval_pv'
make[3]: *** [plperl.o] Error 1
make[3]: Leaving directory
`/usr/local/src/postgresql-7.4beta3/src/pl/plperl'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/usr/local/src/postgresql-7.4beta3/src/pl'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/usr/local/src/postgresql-7.4beta3/src'
make: *** [all] Error 2

any ideas?
need any other info?

thanks in advance,
Robert Treat
--
Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL