Add Makefile example

This makefile check file dependecies (.h)
Idea from
5c644cfd35/Makefile

Makefile/Makefile

@@ -0,0 +1,20 @@
+CXXFLAGS ?= -Werr -Wall
+
+program = test
+sources = $(wildcard *.c)
+objects = $(sources:%.c=%.o)
+depends = $(sources:%.c=%.d)
+
+%.d: %.c
+	@$(CPP) $(CPPFLAGS) -c -MP -MM -MT "$@ $*.o" $< >$@
+
+$(program): $(objects)
+	$(CXX) -o $@ $^ $(LDFLAGS) $(LDLIBS)
+
+.PHONY: clean
+clean:
+	rm -f $(program) $(objects) $(depends)
+
+ifneq ($(MAKECMDGOALS),clean)
+-include $(depends)
+endif