Add receipe for mdns.

bsp/buildroot_external/package/mdns/Config.in

@@ -0,0 +1,7 @@
+config BR2_PACKAGE_MDNS
+	bool "mdns"
+	default n
+	select BR2_PACKAGE_LIBUBOX
+	select BR2_PACKAGE_UBUS
+	help
+		mdns.

bsp/buildroot_external/package/mdns/mdns.mk

@@ -0,0 +1,21 @@
+################################################################################
+#
+# UBOX TOOLS
+#
+################################################################################
+
+MDNS_VERSION:= 2015.09.03
+
+MDNS_SITE = $(TOPDIR)/../../src/3P/mdns/builders/cmake
+MDNS_SITE_METHOD = local
+MDNS_INSTALL_STAGING = YES
+
+MDNS_DEPENDENCIES = libubox ubus
+
+MDNS_CONF = SRC_DIR=$(TOPDIR)/../..
+
+MDNS_CONF_ENV = $(UBOX_CONF)
+MDNS_MAKE_ENV = $(UBOX_CONF)
+MDNS_CONF_OPTS += -DMODULE_PATH=$(TOPDIR)/../../bsp/cmake-modules -DCMAKE_BUILD_TYPE=$(BUILD_TYPE)
+
+$(eval $(cmake-package))

src/3P/mdns/builders/cmake/CMakeLists.txt

@@ -0,0 +1,26 @@
+cmake_minimum_required (VERSION 3.0)
+
+project (mdns)
+
+ADD_DEFINITIONS(-Os -ggdb -Wall -Werror --std=gnu99 -Wmissing-declarations)
+
+set (CMAKE_MODULE_PATH "${MODULE_PATH}")
+
+set(DISABLE_TARGET_OPTIMIZATION ON)
+
+include (br)
+
+# mdns
+add_executable (mdns 
+
+	$ENV{SRC_DIR}/src/3P/mdns/main.c
+	$ENV{SRC_DIR}/src/3P/mdns/dns.c
+	$ENV{SRC_DIR}/src/3P/mdns/announce.c
+	$ENV{SRC_DIR}/src/3P/mdns/cache.c
+	$ENV{SRC_DIR}/src/3P/mdns/service.c
+	$ENV{SRC_DIR}/src/3P/mdns/util.c
+	$ENV{SRC_DIR}/src/3P/mdns/ubus.c
+	$ENV{SRC_DIR}/src/3P/mdns/interface.c
+)
+target_link_libraries (mdns ubox ubus resolv blobmsg_json)
+install (TARGETS mdns RUNTIME DESTINATION sbin)