##########################################################
#  This Makefile is to build the ASN1 library to be used
#  for external codec in Titan
#  This Makefile is expected that asn1c compiler is 
#  installed in the PATHs
##########################################################

# The name of the library
ASN_LIBRARY = libItsAsn.so 
# ASN.1 files to be included in the library
ASN_FILES = LibIts/CAM/CAM.asn \
            LibIts/DENM/DENM.asn \
            LibIts/IS/ETSI_TS_103301/IVIM_PDU_Descriptions.asn \
            LibIts/IS/ETSI_TS_103301/MAPEM_PDU_Descriptions.asn \
            LibIts/IS/ETSI_TS_103301/SPATEM_PDU_Descriptions.asn \
            LibIts/IS/ETSI_TS_103301/SREM_PDU_Descriptions.asn \
            LibIts/IS/ETSI_TS_103301/SSEM_PDU_Descriptions.asn \
            LibIts/IS/ISO_TS_14816/AVIAEINumberingAndDataStructures.asn \
            LibIts/IS/ISO_TS_14906/EfcDsrcApplication.asn \
            LibIts/IS/ISO_TS_14906/EfcDsrcGeneric.asn \
            LibIts/IS/ISO_TS_17419/CITSapplMgmtIDs.asn \
            LibIts/IS/ISO_TS_19091/original/AddGrpC.asn \
            LibIts/IS/ISO_TS_19091/original/DSRC.asn \
            LibIts/IS/ISO_TS_19091/original/REGION.asn \
            LibIts/IS/ISO_TS_19321/IVI.asn \
            LibIts/IS/ISO_TS_24534-3/ElectronicRegistrationIdentificationVehicleDataModule.asn \
            LibIts/ITS-Container/ITS_Container.asn

# PDUs
PDU = CAM DENM MAPEM SPATEM SREM SSEM IVIM

ifeq (,$(ASN_DIR))
##########################################################
# Build path for the library
BIN_DIR := ../bin/asn1
# Relative path from the build path to the directory with 
# ASN.1 files
ASN_DIR := ../../asn1

.PHONY: FORCE

all: $(BIN_DIR)/$(ASN_LIBRARY)
clean:
	make -C $(BIN_DIR) clean

$(BIN_DIR)/$(ASN_LIBRARY): $(BIN_DIR)/Makefile
	make -C $(BIN_DIR) all

$(BIN_DIR):
	mkdir -p $@

$(BIN_DIR)/Makefile: $(BIN_DIR) Makefile
	echo ASN_DIR=$(ASN_DIR) >$@
	cat Makefile           >>$@

##########################################################
else
##########################################################
# This part is executed within the BIN_DIR directory to
# override variables from the Makefile.am.samples 
# generated by asn1c
include Makefile.am.sample
TARGET = libItsAsn.so
OBJS = ${ASN_MODULE_SOURCES:.c=.o}
LDFLAGS = -shared
CONVERTER=converter
CONVERTER_OBJS=${ASN_CONVERTER_SOURCES:.c=.o}

Makefile.am.sample: $(addprefix $(ASN_DIR)/, $(ASN_FILES))
	asn1c -gen-PER $(addprefix -pdu=,$(PDU)) $^

all: $(CONVERTER)

$(CONVERTER): $(CONVERTER_OBJS) $(ASN_LIBRARY)
	$(CC) $(CFLAGS) -o $@ $(CONVERTER_OBJS) $(filter-out -shared, $(LDFLAGS)) $(ASN_LIBRARY) $(LIBS)

##########################################################
endif