sudo port install irssi


--->  Building irssi with target all
Error: Target org.macports.build returned: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_irc_irssi/work/irssi-0.8.11" && make all " returned error 2
Command output: make  all-recursive
Making all in src
Making all in lib-popt
make[3]: Nothing to be done for `all'.
Making all in lib-config
make[3]: Nothing to be done for `all'.
Making all in core
make[3]: Nothing to be done for `all'.
Making all in irc
Making all in core
make[4]: Nothing to be done for `all'.
Making all in dcc
make[4]: Nothing to be done for `all'.
Making all in flood
make[4]: Nothing to be done for `all'.
Making all in notifylist
make[4]: Nothing to be done for `all'.
Making all in proxy
rm -f libirc_proxy.a
ln -s .libs/libirc_proxy.a libirc_proxy.a
/bin/sh ../../../libtool --tag=CC --mode=link gcc  -O2 -Wall -I/opt/local/include    -L/opt/local/lib -o libirc_proxy.la -rpath /opt/local/lib/irssi/modules -module proxy.lo dump.lo listen.lo  
gcc ${wl}-flat_namespace ${wl}-undefined ${wl}suppress -o .libs/libirc_proxy.0.0.0.so -bundle  .libs/proxy.o .libs/dump.o .libs/listen.o  -L/opt/local/lib
ld: duplicate symbol _g_bit_nth_lsf in .libs/dump.o and .libs/proxy.o

collect2: ld returned 1 exit status
make[4]: *** [libirc_proxy.la] Error 1
make[3]: *** [all-recursive] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

Error: Status 1 encountered during processing.