asterisk users - Jan 2008 - [FreeBSD 6.2] Error compiling Zaptel from Ports?

Hello

I'm trying to build the Zaptel ports on FreeBSD, but it fails:

=========# cd /usr/ports/misc/zaptel/
# make install

===>  Building for zaptel-1.4.6_3
make -C zaptel all
Warning: Object directory not changed from original
/usr/ports/misc/zaptel/work/zaptel-bsd-1.4.6/zaptel
cc -O2 -fno-strict-aliasing -pipe -Wall -D_KERNEL -DKLD_MODULE
-std=c99 -nostdinc   -I. -I@ -I@/contrib/altq -finline-limit=8000
--param inline-unit-growth=100 --param large-function-growth=1000
-fno-common  -mno-align-long-strings -mpreferred-stack-boundary=2
-mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 -ffreestanding -Wall
-Wredundant-decls -Wnested-externs -Wstrict-prototypes
-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  -Wundef
-Wno-pointer-sign -fformat-extensions -c zaptel.c
cc1: error: unrecognized command line option "-Wno-pointer-sign"
*** Error code 1

Stop in /usr/ports/misc/zaptel/work/zaptel-bsd-1.4.6/zaptel.
*** Error code 1

Stop in /usr/ports/misc/zaptel/work/zaptel-bsd-1.4.6.
*** Error code 1

Stop in /usr/ports/misc/zaptel.
=========
Has someone seen this and knows what to do?

Thank you.

On Sun, 06 Jan 2008 10:20:38 +0100, Vincent
<vincent.delporte at bigfoot.com> wrote:
>cc1: error: unrecognized command line option "-Wno-pointer-sign"
>*** Error code 1
I wonder if maybe the people who ported Asterisk to FreeBSD aren't
using a more recent version of GCC than what's available in the 6.2
ports:

=====# cc -v  
Using built-in specs.
Configured with: FreeBSD/i386 system compiler
Thread model: posix
gcc version 3.4.6 [FreeBSD] 20060305
=====
Since GCC was not upgraded by running cvsup, what would be a valid way
to upgrade it myself? By downloading a package for a more recent
version of FBSD?

Thank you.