update Makefile, move wmc.c to seperate folder

Makefile

@@ -1,4 +1,25 @@
-all:
-	gcc wm.c client.c handler.c main.c -lXinerama -lX11 -o wm
-debug:
-	gcc wm.c client.c handler.c main.c -lXinerama -lX11 -o wm -g
+CC=gcc
+EXT=.c
+FLAGS=-O0 -g
+DEPFLAGS=-MD -MP
+LIBS=$(shell pkg-config --libs xcb x11 xinerama)
+EXEC_NAME=wm
+
+OBJDIR=obj
+
+SRC=$(wildcard *$(EXT))
+OBJS=$(patsubst %,$(OBJDIR)/%.o, $(basename $(SRC)))
+
+$(shell mkdir -p $(dir $(OBJS)) > /dev/null)
+
+$(EXEC_NAME): $(OBJS)
+	$(CC) $(FLAGS) $(LIBS) $^ -o $(EXEC_NAME)
+
+$(OBJDIR)/%.o: %$(EXT)
+	$(CC) $(FLAGS) $(DEPFLAGS) -c -o $@ $<
+
+.PHONY: clean
+clean:
+	rm -rf $(OBJDIR)
+
+-include $(SRC:$(EXT)=.d)