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我正在尝试安装 Linux 外部内核模块。我已经解压了完整的源代码压缩包：有源代码 (.c)、Kconfig 和 Makefile。

在向 .config 添加选项时make menuconfig，我得到了

make: *** 没有规则来制作目标“menuconfig”。停止。

（我试过make menuconfig了/usr/src/Linux-header-3.xxxx，它确实有效；菜单弹出！）

我对这种make menuconfig机制有点困惑。我是否必须将我的 Kconfig 与 Linux 顶级 Makefile（Kconfig？）链接或添加另一个 Kbuild 文件？

下面列出了几个文件：

配置：

    config PMFS
        tristate "Persistent and Protected PM file system support"
        depends on HAS_IOMEM
        select CRC16
        help
           If your system has a block of fast (comparable in access speed to
           system memory) and non-volatile byte-addressable memory and you wish to
           mount a light-weight, full-featured, and space-efficient filesystem over
           it, say Y here, and read <file:Documentation/filesystems/pmfs.txt>.

           To compile this as a module,  choose M here: the module will be
           called pmfs.

    config PMFS_XIP
        bool "Execute-in-place in PMFS"
        depends on PMFS && BLOCK
        help
           Say Y here to enable XIP feature of PMFS.

    config PMFS_WRITE_PROTECT
        bool "PMFS write protection"
        depends on PMFS && MMU && HAVE_SET_MEMORY_RO
        default y
        help
           Say Y here to enable the write protect feature of PMFS.

    config PMFS_TEST
        boolean
        depends on PMFS

    config PMFS_TEST_MODULE
        tristate "PMFS Test"
        depends on PMFS && PMFS_WRITE_PROTECT && m
        select PMFS_TEST
        help
          Say Y here to build a simple module to test the protection of
          PMFS. The module will be called pmfs_test.

生成文件：

    obj-$(CONFIG_PMFS) += pmfs.o
    obj-$(CONFIG_PMFS_TEST_MODULE) += pmfs_test.o

    pmfs-y := bbuild.o balloc.o dir.o file.o inode.o namei.o super.o symlink.o ioctl.o         journal.o

    pmfs-$(CONFIG_PMFS_WRITE_PROTECT) += wprotect.o
    pmfs-$(CONFIG_PMFS_XIP) += xip.o
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