Add initial cython makefile.

.gitignore

@@ -1 +1,4 @@
 __pycache__
+wp-cal-integration
+*.c
+*.o

Makefile

@@ -0,0 +1,21 @@
+CC ?= cc
+CFLAGS ?= $(shell python-config --embed --cflags)
+LDFLAGS ?= $(shell python-config --embed --ldflags)
+
+SRC := main.py adapters/*.py
+OBJ := $(SRC:%.py=%.o)
+
+wp-cal-integration: $(OBJ)
+	$(CC) $(LDFLAGS) -o $@ $^
+
+clean:
+	$(RM) $(OBJ)
+
+main.c: main.py
+	cython -3 --embed -o $@ $<
+%.c: %.py
+	cython -3 -o $@ $<
+
+%.o: %.c
+	$(CC) -c $(CFLAGS) -o $@ $<
+