diff --git a/lib/bind/config.mk b/lib/bind/config.mk
index 92cfbec36cc7..a50d348afec2 100644
--- a/lib/bind/config.mk
+++ b/lib/bind/config.mk
@@ -70,6 +70,19 @@ ISC_ATOMIC_ARCH=	x86_32
 ISC_ATOMIC_ARCH=	${MACHINE_ARCH}
 .endif
 
+# Optional features
+.if ${MK_BIND_LARGE_FILE} == "yes"
+CFLAGS+=	-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64
+.endif
+.if ${MK_BIND_SIGCHASE} == "yes"
+CFLAGS+=	-DDIG_SIGCHASE
+.endif
+.if ${MK_BIND_XML} == "yes"
+CFLAGS+=	-DHAVE_LIBXML2
+CFLAGS+=	-I/usr/local/include -I/usr/local/include/libxml2
+CFLAGS+=	-L/usr/local/lib -lxml2 -lz -liconv -lm
+.endif
+
 # Link against BIND libraries
 .if ${MK_BIND_LIBS} == "no"
 LIBBIND9=	${LIB_BIND_REL}/bind9/libbind9.a
diff --git a/share/mk/bsd.own.mk b/share/mk/bsd.own.mk
index a4523bac1474..4206969b19ad 100644
--- a/share/mk/bsd.own.mk
+++ b/share/mk/bsd.own.mk
@@ -402,7 +402,11 @@ MK_${var}:=	yes
 # MK_* options which default to "no".
 #
 .for var in \
+    BIND_IDN \
+    BIND_LARGE_FILE \
     BIND_LIBS \
+    BIND_SIGCHASE \
+    BIND_XML \
     GNU_CPIO \
     HESIOD \
     IDEA
diff --git a/tools/build/options/WITH_BIND_IDN b/tools/build/options/WITH_BIND_IDN
new file mode 100644
index 000000000000..35d6628dbcd2
--- /dev/null
+++ b/tools/build/options/WITH_BIND_IDN
@@ -0,0 +1,3 @@
+.\" $FreeBSD$
+Set to enable IDN support for dig, host, and nslookup.
+This requires ports/dns/idnkit to be installed in /usr/local.
diff --git a/tools/build/options/WITH_BIND_LARGE_FILE b/tools/build/options/WITH_BIND_LARGE_FILE
new file mode 100644
index 000000000000..00e48eb48982
--- /dev/null
+++ b/tools/build/options/WITH_BIND_LARGE_FILE
@@ -0,0 +1,2 @@
+.\" $FreeBSD$
+Set to enable 64-bit file support.
diff --git a/tools/build/options/WITH_BIND_SIGCHASE b/tools/build/options/WITH_BIND_SIGCHASE
new file mode 100644
index 000000000000..889e6ec2bf54
--- /dev/null
+++ b/tools/build/options/WITH_BIND_SIGCHASE
@@ -0,0 +1,2 @@
+.\" $FreeBSD$
+Set to enable DNSSEC validation support for dig, host, and nslookup.
diff --git a/tools/build/options/WITH_BIND_XML b/tools/build/options/WITH_BIND_XML
new file mode 100644
index 000000000000..67ba3a5c6f54
--- /dev/null
+++ b/tools/build/options/WITH_BIND_XML
@@ -0,0 +1,3 @@
+.\" $FreeBSD$
+Set to enable the http statistics interface for named.
+This requires ports/textproc/libxml2 to be installed in /usr/local.
diff --git a/usr.bin/dig/Makefile b/usr.bin/dig/Makefile
index 4ac3e64b246f..585e3794b193 100644
--- a/usr.bin/dig/Makefile
+++ b/usr.bin/dig/Makefile
@@ -15,6 +15,11 @@ SRCS+=		dig.c dighost.c
 CFLAGS+=	-I${SRCDIR}/include
 CFLAGS+=	-I${BIND_DIR}/lib/isc/${ISC_ATOMIC_ARCH}/include
 
+.if ${MK_BIND_IDN} == "yes"
+CFLAGS+=	-DWITH_IDN -I/usr/local/include
+CFLAGS+=	-L/usr/local/lib -lidnkit -R/usr/local/lib -liconv
+.endif
+
 DPADD+=		${BIND_DPADD} ${CRYPTO_DPADD} ${PTHREAD_DPADD}
 LDADD+=		${BIND_LDADD} ${CRYPTO_LDADD} ${PTHREAD_LDADD}
 
diff --git a/usr.sbin/named/Makefile b/usr.sbin/named/Makefile
index cb09169786cd..608866a4466e 100644
--- a/usr.sbin/named/Makefile
+++ b/usr.sbin/named/Makefile
@@ -9,7 +9,25 @@ SRCDIR=		${BIND_DIR}/bin/named
 
 PROG=		named
 
-CONFIGARGS='--prefix=/usr' '--without-libxml2' '--without-idn' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--enable-threads' '--disable-ipv6' '--enable-getifaddrs' '--disable-linux-caps' '--with-openssl=/usr' '--with-randomdev=/dev/random'
+CONFIGARGS='--prefix=/usr' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--enable-threads' '--disable-ipv6' '--enable-getifaddrs' '--disable-linux-caps' '--with-openssl=/usr' '--with-randomdev=/dev/random'
+
+# Optional features
+.if ${MK_BIND_LARGE_FILE} == "yes"
+CONFIGARGS+='--enable-largefile'
+.endif
+.if ${MK_BIND_SIGCHASE} == "yes"
+CONFIGARGS+='STD_CDEFINES=-DDIG_SIGCHASE=1'
+.endif
+.if ${MK_BIND_IDN} == "yes"
+CONFIGARGS+='--with-idn=/usr/local'
+.else
+CONFIGARGS+='--without-idn'
+.endif
+.if ${MK_BIND_XML} == "yes"
+CONFIGARGS+='--with-libxml2=/usr/local'
+.else
+CONFIGARGS+='--without-libxml2'
+.endif
 
 .PATH: ${SRCDIR}/unix
 SRCS+=		os.c