Allow clamav to use rar 3 archives using archivers/libunrar.

PR:		86510
Submitted by:	Alex Samorukov <samm@os2.kiev.ua>,
		Rob <r.evers@nedstat.com> (maintainer)

security/clamav/Makefile

@@ -7,6 +7,7 @@
 
 PORTNAME=	clamav
 PORTVERSION=	0.87
+PORTREVISION=	1
 CATEGORIES=	security
 MASTER_SITES=	${MASTER_SITE_SOURCEFORGE_EXTENDED}
 MASTER_SITE_SUBDIR=	clamav
@@ -23,7 +24,8 @@ RUN_DEPENDS=	lha:${PORTSDIR}/archivers/lha \
 		unzip:${PORTSDIR}/archivers/unzip
 
 OPTIONS=	MILTER "Compile the milter interface" Off \
-		CURL "Support URL downloading" Off
+		CURL "Support URL downloading" Off \
+		UNRAR "Support for external Unrar library" Off
 USE_REINPLACE=	yes
 USE_LIBTOOL_VER=15
 CONFIGURE_TARGET=	--build=${MACHINE_ARCH}-portbld-freebsd${OSREL}
@@ -124,9 +126,25 @@ CONFIGURE_ARGS+=	--with-libcurl
 CONFIGURE_ARGS+=	--without-libcurl
 .endif
 
+.if defined(WITH_LIBUNRAR)
+WANT_AUTOMAKE_VER=      19
+USE_AUTOCONF_VER=       259
+LIB_DEPENDS+=		unrar.3:${PORTSDIR}/archivers/libunrar
+
+pre-configure:
+	cd ${WRKSRC} && \
+	${ACLOCAL} && \
+	${AUTOHEADER} && \
+	${AUTOCONF} && \
+	${AUTOMAKE}
+.endif
+
 post-patch:
 	@${REINPLACE_CMD} -e 's|-pthread -lc_r|${PTHREAD_LIBS}|g' \
 		${CONFIGURE_WRKSRC}/${CONFIGURE_SCRIPT}
+.if defined(WITH_LIBUNRAR)
+	${PATCH} -d  ${WRKSRC}/libclamav < ${PORTSDIR}/security/clamav/files/clamav-0.87-libunrar3.patch
+.endif
 
 pre-build:
 	@if ${LDCONFIG} -r | ${GREP} -qw -e -lclamav; then \