Add libmodbus package

Signed-off-by: Julien Boibessot <julien.boibessot@armadeus.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/Config.in

@@ -333,6 +333,7 @@ source "package/libidn/Config.in"
 source "package/libmicrohttpd/Config.in"
 source "package/neon/Config.in"
 source "package/libmnl/Config.in"
+source "package/libmodbus/Config.in"
 source "package/libnl/Config.in"
 source "package/libpcap/Config.in"
 source "package/libosip2/Config.in"

package/libmodbus/Config.in

@@ -0,0 +1,8 @@
+config BR2_PACKAGE_LIBMODBUS
+	bool "libmodbus"
+	help
+	  libmodbus is a free software library to send/receive data according
+	  to the Modbus protocol. This library is written in C and supports
+	  RTU (serial) and TCP (Ethernet) communications.
+
+	  http://libmodbus.org

package/libmodbus/libmodbus.mk

@@ -0,0 +1,11 @@
+#############################################################
+#
+# libmodbus
+#
+#############################################################
+LIBMODBUS_VERSION = 3.0.1
+LIBMODBUS_SITE = http://github.com/downloads/stephane/libmodbus
+LIBMODBUS_SOURCE = libmodbus-$(LIBMODBUS_VERSION).tar.gz
+LIBMODBUS_INSTALL_STAGING = YES
+
+$(eval $(call AUTOTARGETS))