wzdftpd compile error

[ml at sd2i.com]

I have the error on 4.11 and 5.4, ports tree updated today, anyone can 
help me to complete the install ?

# make showconfig
===> The following configuration options are set for wzdftpd-0.6.1_1:
     UTF8=off "Enable UTF8 support"
     TCL=off "Enable TCL support"
     SSL=off "Enable OpenSSL support"
     GNUTLS=off "Enable gnutls support"
     IPV6=off "Enable IPv6 support"
     PERL=off "Enable PERL support"
     MYSQL=on "Enable MYSQL backend"
     AVAHI=off "Enable Zeroconf support using Avahi"
     HOWL=off "Enable Zeroconf support using Howl"

# portversion -v libiconv
libiconv-1.9.2_2            =  up-to-date with port

portinstall ftp/wzdftpd stop here :

cc -DHAVE_CONFIG_H -I. -I. -I..  -I..  -DWZD_MULTITHREAD -D_REENTRANT 
-D_THREAD_SAFE  -I/usr/local/include -D_THREAD_SAFE -O3 -pipe  -O -pipe  
-c wzd_init_lex.c
/bin/sh ../libtool --tag=CC --mode=link cc  -O -pipe   -L/usr/local/lib 
-pthread -o wzdftpd  -lcrypt -D_THREAD_SAFE    wzd_main.o 
wzd_ServerThread.o wzd_init_lex.o ../libwzd-core/libwzd_core.la
mkdir .libs

*** Warning: Linking the executable wzdftpd against the loadable module
*** libwzd_core.so is not portable!
cc -O -pipe -pthread -o .libs/wzdftpd -D_THREAD_SAFE wzd_main.o 
wzd_ServerThread.o wzd_init_lex.o  -L/usr/local/lib -lcrypt 
../libwzd-core/.libs/libwzd_core.so -Wl,--rpath -Wl,/usr/local/lib
../libwzd-core/.libs/libwzd_core.so: undefined reference to `libiconv_open'
../libwzd-core/.libs/libwzd_core.so: undefined reference to `libiconv_close'
../libwzd-core/.libs/libwzd_core.so: undefined reference to `libiconv'
gmake[2]: *** [wzdftpd] Error 1
rm wzd_init_lex.c
gmake[2]: Leaving directory 
`/usr/ports/ftp/wzdftpd/work/wzdftpd-0.6.1/wzdftpd'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory `/usr/ports/ftp/wzdftpd/work/wzdftpd-0.6.1'
gmake: *** [all] Error 2
*** Error code 2


Regards,
David.