Define a config flag for each Object exposed by libnetmngr

src/Makefile

-LIBNETMNGR := libnetmngr.so
-LIBIFACESTACK := libinterface_stack.so
-
-LIBNETMNGROBJS := net_plugin.o \
-				  gre.o \
-				  ip.o \
-				  routing.o \
-				  ppp.o \
-				  routeradvertisement.o \
-				  ipv6rd.o \
-				  common.o
-		   
+LIBNETMNGR = libnetmngr.so
+LIBIFACESTACK = libinterface_stack.so
+
+LIBNETMNGROBJS = net_plugin.o common.o
+
+ifeq ($(NETMNGR_GRE_OBJ),y)
+LIBNETMNGROBJS += gre.o
+PROG_CFLAGS += -DNETMNGR_GRE_OBJ
+endif
+
+ifeq ($(NETMNGR_IP_OBJ),y)
+LIBNETMNGROBJS += ip.o
+PROG_CFLAGS += -DNETMNGR_IP_OBJ
+endif
+
+ifeq ($(NETMNGR_ROUTING_OBJ),y)
+LIBNETMNGROBJS += routing.o
+PROG_CFLAGS += -DNETMNGR_ROUTING_OBJ
+endif
+
+ifeq ($(NETMNGR_PPP_OBJ),y)
+LIBNETMNGROBJS += ppp.o
+PROG_CFLAGS += -DNETMNGR_PPP_OBJ
+endif
+
+ifeq ($(NETMNGR_ROUTER_ADVERTISEMENT_OBJ),y)
+LIBNETMNGROBJS += routeradvertisement.o
+PROG_CFLAGS += -DNETMNGR_ROUTER_ADVERTISEMENT_OBJ
+endif
+
+ifeq ($(NETMNGR_IPV6RD_OBJ),y)
+LIBNETMNGROBJS += ipv6rd.o
+PROG_CFLAGS += -DNETMNGR_IPV6RD_OBJ
+endif
+   
 LIBIFACESTACKOBJS := interfacestack.o
 
 LIB_CFLAGS = $(CFLAGS) -Wall -Werror -fstrict-aliasing -g

src/net_plugin.c

 /*
- * Copyright (C) 2024 iopsys Software Solutions AB
+ * Copyright (C) 2024-2025 iopsys Software Solutions AB
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License version 2.1
@@ -8,20 +8,58 @@
  *	Author: Amin Ben Romdhane <amin.benromdhane@iopsys.eu>
  */
 
+#include <libbbfdm-api/dmapi.h>
+
+#ifdef NETMNGR_IP_OBJ
 #include "ip.h"
+#endif
+
+#ifdef NETMNGR_GRE_OBJ
 #include "gre.h"
+#endif
+
+#ifdef NETMNGR_PPP_OBJ
 #include "ppp.h"
+#endif
+
+#ifdef NETMNGR_ROUTING_OBJ
 #include "routing.h"
+#endif
+
+#ifdef NETMNGR_ROUTER_ADVERTISEMENT_OBJ
 #include "routeradvertisement.h"
+#endif
+
+#ifdef NETMNGR_IPV6RD_OBJ
 #include "ipv6rd.h"
+#endif
 
 DM_MAP_OBJ tDynamicObj[] = {
 /* parentobj, nextobject, parameter */
+
+#ifdef NETMNGR_IP_OBJ
 {"Device.", tDeviceIPObj, NULL},
+#endif
+
+#ifdef NETMNGR_GRE_OBJ
 {"Device.", tDeviceGREObj, NULL},
+#endif
+
+#ifdef NETMNGR_PPP_OBJ
 {"Device.", tDevicePPPObj, NULL},
+#endif
+
+#ifdef NETMNGR_ROUTING_OBJ
 {"Device.", tDeviceRoutingObj, NULL},
+#endif
+
+#ifdef NETMNGR_ROUTER_ADVERTISEMENT_OBJ
 {"Device.", tDeviceRouterAdvertisementObj, NULL},
+#endif
+
+#ifdef NETMNGR_IPV6RD_OBJ
 {"Device.", tDeviceIPv6rdObj, NULL},
+#endif
+
 {0}
 };