No lidbl.so in libpq.so (postgresql 8.4.4)

Hi,

On my mandriva linux, I don't have problem to build pgpool 2.3.3 with
postgresql 8.4.2.  But when I upgraded to 8.4.4, I cannot build pgpool
again due to the libdl.so is not required in libpq.so (from the ldd
command).  Do you know how to build the 8.4.4 so that libdl.so is
required in libpq.so ?

10:16am 32 gfu@nppdist:~/postgres/postgresql-8.4.4> locate libdl
/lib/libdl-2.6.1.so
/lib/libdl.so.2

10:16am 33 gfu@nppdist:~/postgres/postgresql-8.4.4> ldd
./src/interfaces/libpq/libpq.so
    linux-gate.so.1 =>  (0xffffe000)
    libcrypt.so.1 => /lib/libcrypt.so.1 (0x40026000)
    libc.so.6 => /lib/i686/libc.so.6 (0x40054000)
    /lib/ld-linux.so.2 (0x80000000)


Thanks,
Gary