Better separate compilation

src/Makefile

@@ -20,29 +20,38 @@
 #=----------------------------------------------------------------------------=#
 
 .PHONY: all clean
+.DEFAULT_GOAL: all
 
 CCOPTS=-pthread -fPIC -fwrapv -Wall -fno-strict-aliasing
 CCFLAGS=-I /usr/include/python3.9
 LDFLAGS=-lpython3.9 -lpthread -lm -lutil -ldl
+BINDIR=../bin
 
-DEPS=main.c scheduler.c server.c localthread.c
+DYNLIBS= $(BINDIR)/scheduler.so $(BINDIR)/server.so $(BINDIR)/localthread.so
 
-gem-graph-server:	$(DEPS)
-	$(CC) $(CCOPTS) $(CCFLAGS) -o $@ $(DEPS) $(LDFLAGS)
+# ---- General recipes ------------------------------------------------------- #
+
+$(BINDIR)/%.so:	%.c
+	@echo "Building dynamic library $@"
+	@$(CC) --shared $(CCOPTS) $(CCFLAGS) -o $@ $<
 
 %.c:	%.py
-	cython3 $< -o $@
+	@echo "Cythonizing $< to $@"
+	@cython3 $< -o $@
+
+# ---- Main recipe ----------------------------------------------------------- #
+$(BINDIR)/gem-graph-server:	main.c $(DYNLIBS)
+	@echo "Building program to $@"
+	@$(CC) $(CCOPTS) $(CCFLAGS) -o $@ $< $(LDFLAGS)
+	@echo "Success!"
 
 main.c: main.py
-	cython3 $< -o $@ --embed
+	@echo "Cythonizing main file to $@"
+	@cython3 $< -o $@ --embed
 
+
+# ---- Misc recipes ---------------------------------------------------------- #
 clean:
-	rm -rf *.c *.o gem-graph-server test
+	rm -rf *.c ../bin/*
 
-all: gem-graph-server
-
-test:	test.c
-	$(CC) $(CCOPTS) $(CCFLAGS) -o $@ $< $(LDFLAGS)
-
-test.c:	test.py
-	cython3 $< --embed
+all: $(BINDIR)/gem-graph-server