makefile中的多选菜单

# 定义多选菜单选项
menu_options := option1 option2 option3

# 默认选择的选项
default_option := option1

# 用户选择的选项
selected_options := $(default_option)

# 多选菜单目标
menu:
    @echo "请选择编译选项："
    @echo "1. Option 1"
    @echo "2. Option 2"
    @echo "3. Option 3"
    @read -p "请输入选项编号 [默认为 $(default_option)]: " option; \
    case $$option in \
        1) selected_options := option1;; \
        2) selected_options := option2;; \
        3) selected_options := option3;; \
        *) selected_options := $(default_option);; \
    esac

# 编译目标
build: menu
    @echo "编译选项：$(selected_options)"
    # 根据选项进行编译操作
    # ...

.PHONY: menu build