diff --git a/lang/gawk/Makefile b/lang/gawk/Makefile
index d5891d5b1f6c..a01d1ec07ac4 100644
--- a/lang/gawk/Makefile
+++ b/lang/gawk/Makefile
@@ -1,43 +1,52 @@
 # Created by: Andreas Klemm <andreas@klemm.gtn.com>
 # $FreeBSD$
 
 PORTNAME=	gawk
 PORTVERSION=	4.1.0
 CATEGORIES=	lang
 MASTER_SITES=	GNU
 
 MAINTAINER=	johans@FreeBSD.org
 COMMENT=	The GNU version of Awk
 
 LIB_DEPENDS=	sigsegv:${PORTSDIR}/devel/libsigsegv
 
+OPTIONS_DEFINE=	MPFR
+MPFR_DESC?=	Support multiple-precision floating-point computation
+
 INFO=		gawk gawkinet
 
 USE_XZ=		true
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--with-libiconv-prefix=${LOCALBASE} \
 		--with-libintl-prefix=${LOCALBASE} \
 		AWK=${AWK}
 
 MAN1=		gawk.1 igawk.1
 MAN3=		filefuncs.3am fnmatch.3am fork.3am ordchr.3am readdir.3am \
 		readfile.3am revoutput.3am revtwoway.3am rwarray.3am time.3am
 
 PLIST_SUB=	VERSION=${PORTVERSION}
 
 .include <bsd.port.options.mk>
 
 .if ${PORT_OPTIONS:MNLS}
 USES+=		gettext
 PLIST_SUB+=	NLS=""
 .else
 CONFIGURE_ARGS+=--disable-nls
 PLIST_SUB+=	NLS="@comment "
 .endif
 
+.if ${PORT_OPTIONS:MMPFR}
+LIB_DEPENDS=	mpfr:${PORTSDIR}/math/mpfr
+.else
+CONFIGURE_ARGS+=--without-gmp --without-mpfr
+.endif
+
 post-patch:
 	@${RM} -f ${WRKSRC}/doc/*.info
 	@${REINPLACE_CMD} -e 's/ -export-dynamic/ -Wl,--export-dynamic/' \
 		${WRKSRC}/configure
 
 .include <bsd.port.mk>