diff --git a/apps/Makefile b/apps/Makefile
index 95d5cbfe..2cd26b5c 100644
--- a/apps/Makefile
+++ b/apps/Makefile
@@ -403,7 +403,7 @@ writefile: $(BACNET_LIB_TARGET)
 	$(MAKE) -B -C $@
 
 .PHONY: router
-router: $(BACNET_LIB_TARGET)
+router:
 	$(MAKE) -B -C $@
 
 .PHONY: router-ipv6
diff --git a/apps/router/Makefile b/apps/router/Makefile
index c8999cff..ea92ac5d 100644
--- a/apps/router/Makefile
+++ b/apps/router/Makefile
@@ -1,4 +1,6 @@
 #Makefile to build BACnet Application for the Linux Port
+# Note: requires libconfig-dev to be installed
+#       sudo apt-get install -qq libconfig-dev
 
 # tools - only if you need them.
 # Most platforms have this already defined
@@ -10,14 +12,11 @@ TARGET = router
 TARGET_BIN = ${TARGET}$(TARGET_EXT)
 
 ifeq (${BACNET_PORT},linux)
-#PFLAGS =
-# -pthread
 TARGET_EXT =
 LIBS = -lpthread -lconfig -lm
-LFLAGS += $(LIBS)
+LFLAGS = $(LIBS)
 endif
 
-#DEFINES = $(BACNET_DEFINES) -DBACDL_MSTP -DBACDL_BIP
 SOURCE_DIR = ../../src
 BACNET_SOURCE_DIR = ${SOURCE_DIR}/bacnet
 
@@ -42,20 +41,26 @@ SRCS = main.c \
 	${BACNET_SOURCE_DIR}/bacstr.c \
 	${BACNET_SOURCE_DIR}/npdu.c \
 	${BACNET_SOURCE_DIR}/bacaddr.c \
+	${BACNET_SOURCE_DIR}/hostnport.c \
 	mstpmodule.c \
 	ipmodule.c \
 	portthread.c \
 	msgqueue.c \
 	network_layer.c
 
-CFLAGS += -I${SOURCE_DIR} -I${BACNET_PORT_DIR}
+# note: router does not use common libbacnet.a library, 
+# so use CFLAGS without common app defines or includes
+CFLAGS = -I${SOURCE_DIR} -I${BACNET_PORT_DIR}
+CFLAGS += -DBACNET_STACK_DEPRECATED_DISABLE
+CFLAGS += -std=gnu99
+CFLAGS += $(WARNINGS) $(DEBUGGING) $(OPTIMIZATION)
 
 OBJS = ${SRCS:.c=.o}
 
 all: Makefile ${TARGET_BIN}
 
 ${TARGET_BIN}: ${OBJS} Makefile
-	${CC} ${PFLAGS} ${OBJS} ${LFLAGS} -o $@
+	${CC} ${OBJS} ${LFLAGS} -o $@
 	size $@
 	cp $@ ../../bin
 
diff --git a/apps/router/main.c b/apps/router/main.c
index 8a7624cf..bdc85a38 100644
--- a/apps/router/main.c
+++ b/apps/router/main.c
@@ -517,6 +517,8 @@ bool parse_cmd(int argc, char *argv[])
                                     current->route_info.net = port_count;
                                 }
                                 break;
+                            default:
+                                break;
                         }
                         dev_opt =
                             getopt_long(argc, argv, bipString, Options, &index);
@@ -620,6 +622,8 @@ bool parse_cmd(int argc, char *argv[])
                                     current->route_info.net = (uint16_t)result;
                                 }
                                 break;
+                            default:
+                                break;
                         }
                         dev_opt = getopt_long(
                             argc, argv, mstpString, Options, &index);
@@ -630,6 +634,8 @@ bool parse_cmd(int argc, char *argv[])
                     return false;
                 }
                 break;
+            default:
+                break;
         }
     }
     return true;
@@ -648,8 +654,9 @@ void init_port_threads(ROUTER_PORT *port_list)
             case MSTP:
                 port->func = &dl_mstp_thread;
                 break;
+            default:
+                break;
         }
-
         port->state = INIT;
         thread = (pthread_t *)malloc(sizeof(pthread_t));
         pthread_create(thread, NULL, port->func, port);
diff --git a/apps/router/network_layer.c b/apps/router/network_layer.c
index 862fad5a..1399a512 100644
--- a/apps/router/network_layer.c
+++ b/apps/router/network_layer.c
@@ -116,6 +116,8 @@ uint16_t process_network_message(BACMSG *msg, MSG_DATA *data, uint8_t **buff)
                 case 4:
                     PRINT(ERROR, "Error: Message too long\n");
                     break;
+                default:
+                    break;
             }
             break;
         }
diff --git a/ports/linux/dlmstp_linux.c b/ports/linux/dlmstp_linux.c
index 3d9b3771..1d509b0a 100644
--- a/ports/linux/dlmstp_linux.c
+++ b/ports/linux/dlmstp_linux.c
@@ -563,10 +563,10 @@ uint16_t MSTP_Get_Reply(
     struct mstp_pdu_packet *pkt;
     SHARED_MSTP_DATA *poSharedData = (SHARED_MSTP_DATA *)mstp_port->UserData;
 
+    (void)timeout;
     if (!poSharedData) {
         return 0;
     }
-
     if (Ringbuf_Empty(&poSharedData->PDU_Queue)) {
         return 0;
     }
diff --git a/src/bacnet/basic/bbmd/h_bbmd.c b/src/bacnet/basic/bbmd/h_bbmd.c
index 8c08a1cd..2b06c9cd 100644
--- a/src/bacnet/basic/bbmd/h_bbmd.c
+++ b/src/bacnet/basic/bbmd/h_bbmd.c
@@ -124,6 +124,9 @@ static void debug_print_bip(const char *str, const BACNET_IP_ADDRESS *addr)
             (unsigned)addr->address[1], (unsigned)addr->address[2],
             (unsigned)addr->address[3], (unsigned)addr->port);
     }
+#else
+    (void)str;
+    (void)addr;
 #endif
 }
 
@@ -138,6 +141,9 @@ static void debug_print_unsigned(const char *str, const unsigned int value)
     if (BVLC_Debug) {
         printf("BVLC: %s %u\n", str, value);
     }
+#else
+    (void)str;
+    (void)value;
 #endif
 }
 
@@ -153,6 +159,10 @@ static void debug_print_npdu(
     if (BVLC_Debug) {
         printf("BVLC: %s NPDU=MTU[%u] len=%u\n", str, offset, length);
     }
+#else
+    (void)str;
+    (void)offset;
+    (void)length;
 #endif
 }
 
@@ -166,6 +176,8 @@ static void debug_print_string(const char *str)
     if (BVLC_Debug) {
         printf("BVLC: %s\n", str);
     }
+#else
+    (void)str;
 #endif
 }
 
@@ -515,6 +527,10 @@ static void bbmd_read_bdt_ack_handler(
             break;
         }
     }
+#else 
+    (void)addr;
+    (void)npdu;
+    (void)npdu_length;
 #endif
 }
 
@@ -557,6 +573,10 @@ static void bbmd_read_fdt_ack_handler(
             break;
         }
     }
+#else
+    (void)addr;
+    (void)npdu;
+    (void)npdu_length;
 #endif
 }
 #endif