error when compiling xchat on snow leopard

[jarthel@…]

I have installed xcode 3.2.1 and macports 1.8.1.

Here's the error that I got:

---

Making all in fe-gtk
source='about.c' object='about.o' libtool=no \
	depfile='.deps/about.Po' tmpdepfile='.deps/about.TPo' \
	depmode=gcc3 /bin/sh ../../depcomp \
	/usr/bin/gcc-4.2 -DHAVE_CONFIG_H -I. -I. -I../.. -I/opt/local/include -I../../intl -DLOCALEDIR=\"/opt/local/share/locale\"  -I/opt/local/include -no-cpp-precomp  -I/opt/local/include -I/opt/local/include/glib-1.2 -I/opt/local/include/gtk-1.2 -I/opt/local/lib/glib/include -O2 -Wall -arch -g x86_64  -c `test -f 'about.c' || echo './'`about.c
source='ascii.c' object='ascii.o' libtool=no \
	depfile='.deps/ascii.Po' tmpdepfile='.deps/ascii.TPo' \
	depmode=gcc3 /bin/sh ../../depcomp \
	/usr/bin/gcc-4.2 -DHAVE_CONFIG_H -I. -I. -I../.. -I/opt/local/include -I../../intl -DLOCALEDIR=\"/opt/local/share/locale\"  -I/opt/local/include -no-cpp-precomp  -I/opt/local/include -I/opt/local/include/glib-1.2 -I/opt/local/include/gtk-1.2 -I/opt/local/lib/glib/include -O2 -Wall -arch -g x86_64  -c `test -f 'ascii.c' || echo './'`ascii.c
gcc-4.2: Invalid arch name : -g
gcc-4.2: Invalid arch name : -g
make[3]: *** [about.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: *** [ascii.o] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

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