The following is an example Makefile for a FreeBSD GNOME port.

# New ports collection makefile for:	gnomeapp
# Date created:						27 December 2003
# Whom:								Some GNOME User <&email;@FreeBSD.org>
#
# $FreeBSD: www/en/gnome/docs/example-Makefile.sgml,v 1.4 2004/05/22 21:46:14 pav Exp $
#

# For this example, assume there was already a gnomeapp in the tree, and that this
# is the GTK+-2 version (i.e. gnomeapp2 versus gnomeapp).
PORTNAME=		gnomeapp2
PORTVERSION=	&gnomever;.2
MASTER_SITES=	${MASTER_SITE_GNOME}
MASTER_SITE_SUBDIR=	sources/${PORTNAME:S/2//}/&gnomever;
DISTNAME=	${PORTNAME:S/2//}-${PORTVERSION}
DIST_SUBDIR=	gnome2

MAINTAINER=	gnome@FreeBSD.org
COMMENT=	A GNOME app that does some stuff

USE_BZIP2=	yes
USE_X_PREFIX=	yes
USE_LIBTOOL_VER=15	# many GNOME apps need libtool, and most need GNU configure
USE_GMAKE=		yes # same with GNU make
# This is for i18n:
CONFIGURE_ENV+=	CPPFLAGS="-I${LOCALBASE}/include" \
				LDFLAGS="-L${LOCALBASE}/lib"
USE_GNOME=		gnomehack gnometarget gtk20

# This application can dock in the GNOME panel, or it can not.
# But there's no need to build support for it if the GNOME panel
# libraries are not installed, so only build GNOME panel support
# if the gnomepanel port is already installed.
WANT_GNOME=		yes

.include <bsd.port.pre.mk>

.if ${HAVE_GNOME:Mgnomepanel}!=""
USE_GNOME+= 		gnomepanel
CONFIGURE_ARGS+=    --with-gnome
PKGNAMESUFFIX=  	-gnome
.else
CONFIGURE_ARGS+=    --without-gnome
.endif

# Given all the above code, the package name is either "gnomeapp2-&gnomever;.2-gnome" or
# "gnomeapp2-&gnomever;.2", depending upon whether you want gnomepanel support. The downloaded
# distfile will be "gnomeapp-&gnomever;.2.tar.bz2."

.include <bsd.port.post.mk>