Bugfix/router mstp builds (#630)

* Fixed example app router-ipv6 to build under ports/win32

* Fixed example app router-mstp to build under ports/win32 with MinGW

* Added win32 builds of router-ipv6 and router-mstp to the Github pipeline

apps/lib/Makefile

@@ -23,6 +23,9 @@ INCLUDES = -I$(BACNET_SRC_DIR)
 CFLAGS += $(WARNINGS) $(DEBUGGING) $(OPTIMIZATION) $(BACNET_DEFINES) $(INCLUDES)
 CFLAGS += -ffunction-sections -fdata-sections
 
+APPS_ENVIRONMENT_SRC = \
+	$(BACNET_SRC_DIR)/bacnet/datalink/dlenv.c
+
 PORT_ARCNET_SRC = \
 	$(BACNET_PORT_DIR)/arcnet.c
 
@@ -60,19 +63,19 @@ PORT_NONE_SRC = \
 	$(BACNET_SRC_DIR)/bacnet/datalink/datalink.c
 
 ifeq (${BACDL_DEFINE},-DBACDL_BIP=1)
-BACNET_PORT_SRC = ${PORT_BIP_SRC}
+BACNET_PORT_SRC = ${PORT_BIP_SRC} ${APPS_ENVIRONMENT_SRC}
 endif
 ifeq (${BACDL_DEFINE},-DBACDL_BIP6=1)
-BACNET_PORT_SRC = ${PORT_BIP6_SRC}
+BACNET_PORT_SRC = ${PORT_BIP6_SRC} ${APPS_ENVIRONMENT_SRC}
 endif
 ifeq (${BACDL_DEFINE},-DBACDL_MSTP=1)
-BACNET_PORT_SRC = ${PORT_MSTP_SRC}
+BACNET_PORT_SRC = ${PORT_MSTP_SRC}  ${APPS_ENVIRONMENT_SRC}
 endif
 ifeq (${BACDL_DEFINE},-DBACDL_ARCNET=1)
-BACNET_PORT_SRC = ${PORT_ARCNET_SRC}
+BACNET_PORT_SRC = ${PORT_ARCNET_SRC} ${APPS_ENVIRONMENT_SRC}
 endif
 ifeq (${BACDL_DEFINE},-DBACDL_ETHERNET=1)
-BACNET_PORT_SRC = ${PORT_ETHERNET_SRC}
+BACNET_PORT_SRC = ${PORT_ETHERNET_SRC} ${APPS_ENVIRONMENT_SRC}
 endif
 ifeq (${BACDL_DEFINE},-DBACDL_NONE=1)
 BACNET_PORT_SRC = ${PORT_NONE_SRC}
@@ -80,12 +83,17 @@ endif
 ifeq (${BACDL_DEFINE},-DBACDL_ALL=1)
 BACNET_PORT_SRC = ${PORT_ALL_SRC}
 endif
+ifeq (${BACDL},bip-mstp)
+BACNET_PORT_SRC = ${PORT_BIP_SRC} ${PORT_MSTP_SRC}
+endif
+ifeq (${BACDL},bip-bip6)
+BACNET_PORT_SRC = ${PORT_BIP_SRC} ${PORT_BIP6_SRC}
+endif
 ifneq (${BACDL_DEFINE},)
 CFLAGS += ${BACDL_DEFINE}
 endif
 
 BACNET_PORT_SRC += \
-	$(BACNET_SRC_DIR)/bacnet/datalink/dlenv.c \
 	$(BACNET_PORT_DIR)/mstimer-init.c \
 	$(BACNET_PORT_DIR)/datetime-init.c