Makefile: Changed clean rule, fixed dep

Makefile

@@ -19,9 +19,14 @@ $(BUILD_DIR)/$(NAME): $(C_FILES) | $(BUILD_DIR)
 $(BUILD_DIR):
 	mkdir -p $(BUILD_DIR)
 
-# Clean : clean build directory
+# Clean : clean built executable
 .PHONY: clean
 clean:
+	rm -rf $(BUILD_DIR)/$(NAME)
+
+# Distclean : clean build directory
+.PHONY: distclean
+distclean:
 	rm -rf $(BUILD_DIR)
 
 rungdb: all
@@ -31,7 +36,7 @@ rungdb: all
 $(BUILD_DIR)/linux:
 	cd $(BUILD_DIR) && git clone https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git --depth 1 -b v6.6
 
-$(BUILD_DIR)/linux/.config: hardware/linux.config
+$(BUILD_DIR)/linux/.config: hardware/linux.config | $(BUILD_DIR)/linux
 	cp hardware/linux.config $(BUILD_DIR)/linux/.config
 
 $(BUILD_DIR)/linux/vmlinux: $(BUILD_DIR)/linux/.config | $(BUILD_DIR)/linux