libs: add luci-lib-ip

Add new luci.ip library which is an api compatible C reimplementation
of ip.lua. It also supports dumping the system routing table and neighbour
entry database via netlink.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

libs/luci-lib-ip/Makefile

@@ -0,0 +1,14 @@
+#
+# Copyright (C) 2015 LuCI Team <luci@lists.subsignal.org>
+#
+# This is free software, licensed under the Apache License, Version 2.0 .
+#
+
+include $(TOPDIR)/rules.mk
+
+LUCI_TITLE:=Lua library for IP calculation and routing information
+LUCI_DEPENDS:=+liblua +libnl-tiny
+
+include ../../luci.mk
+
+# call BuildPackage - OpenWrt buildroot signature

libs/luci-lib-ip/src/Makefile

@@ -0,0 +1,17 @@
+IP_CFLAGS = -std=gnu99 -I$(STAGING_DIR)/usr/include/libnl-tiny/
+IP_LDFLAGS = -llua -lm -lnl-tiny
+IP_OBJ = ip.o
+IP_LIB = ip.so
+
+%.o: %.c
+	$(CC) $(CPPFLAGS) $(CFLAGS) $(LUA_CFLAGS) $(IP_CFLAGS) $(FPIC) -c -o $@ $<
+
+compile: $(IP_OBJ)
+	$(CC) $(LDFLAGS) -shared -o $(IP_LIB) $(IP_OBJ) $(IP_LDFLAGS)
+
+install: compile
+	mkdir -p $(DESTDIR)/usr/lib/lua/luci
+	cp $(IP_LIB) $(DESTDIR)/usr/lib/lua/luci/$(IP_LIB)
+
+clean:
+	rm -f *.o *.so