INCLUDE_DIR != pg_config --includedir-server
INSTALL_DIR != pg_config --pkglibdir

serenitas_date.so: date.o
	gcc -lcds -shared -o serenitas_date.so date.o

date.o: date.c
	gcc -fPIC -I $(INCLUDE_DIR) -c date.c

.PHONY: install
install: serenitas_date.so
	-cp serenitas_date.so $(INSTALL_DIR)