No library found for -lnsl

I am trying to install p5-Cflow from ports on Freebsd 7.1-p2 and also on 7 and i get this warning:

Note (probably harmless): No library found for -lnsl

So it doesn't work without it.

lnsl is part of libnsl but i can't find the package for it.

I found :


but when i linked to /usr/local/lib/ i get :

rm -f blib/arch/auto/Cflow/
LD_RUN_PATH="/usr/local/lib" cc -shared -L/usr/local/lib Cflow.o -o blib/arch/auto/Cflow/ -lnsl
/usr/bin/ld: cannot find -lnsl
*** Error code 1

Stop in /usr/ports/net-mgmt/p5-Cflow/work/Cflow-1.053.
*** Error code 1

Stop in /usr/ports/net-mgmt/p5-Cflow.

Anyone got some magic for me to trick it and make it work?

Thank you
On FreeBSD, unlike Linux, libnsl functionality is included in libc. So you need to remove all references in the makefile to -lnsl.

Assuming you have the port downloaded, type make extract in the cflow port directory, cd to work/Cflow-1.053, edit Makefile.PL removing references to -lnsl, save, go back to main directory and make all install).

This will build and install it WITHOUT the warning which, contrary to what it states, IS FATAL!
Thx alot worked like a swish clock.

Also when installed p4-patricia had to take lnsl from Makefile.PL as well. Hope flowscan will work.