Add master Makefile

Makefile

@@ -0,0 +1,19 @@
+targets := cricket bbb ram.drv
+
+.PHONY: all $(targets)
+
+all: $(targets)
+
+# Build all targets
+$(targets):
+	@tput setaf 3 && echo "Building: $@" && tput sgr0
+	@$(MAKE) -C $@ \
+	  && (tput setaf 2 && echo "make $@ good" && tput sgr0) \
+          || (tput blink && tput setaf 1 && echo "MAKE $@ BAD" && tput sgr0 && false)
+
+# Clean all temporary/target files
+clean:
+	@for dir in $(targets); do \
+	  tput setaf 2 && echo "cleaning $$dir" && tput sgr0; \
+	  $(MAKE) -C $$dir clean; \
+	done