针对文件系统上的任何内核源代码树编译树外内核模块 [英] Compiling out-of-tree kernel module against any kernel source tree on the filesystem

问题描述

我正在尝试针对文件系统上的任何源代码树编译模块，但是我在 Makefile 上遇到了问题.这是我针对指定内核的原始 Makefile:

I am trying to compile a module against any source tree on the file system but I am having trouble with the Makefile. This was the original Makefile I had against the kernel specified:

obj-m += new-mod.o

all:
        make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules

clean:
        make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean

这个 Makefile 可以正确编译，但目标是让它针对任何源代码树进行编译.我试过:

This Makefile would compile correctly, but goal is to have it compile against any source tree. I have tried just:

obj-m += new-mod.o

我认为所有:"是假设的，但我收到错误:

I thought that "all:" is assumed but I get error:

make: *** No targets.  Stop.

我还添加了:

all: 

除了错误信息外没有区别的Makefile:

to the Makefile with no difference except for error message:

make: Nothing to be done for `all'

我尝试了很多文档，但没有成功.如有任何帮助，我将不胜感激.

I have tried a lot of documentation but no luck. I would greatly appreciate any help.

推荐答案

目标是让它针对任何源代码树进行编译

你可以提供一个编译的源代码路径

只需替换make -C/lib/modules/$(shell uname -r)/build M=$PWD modules

有了这个

make -C M=$PWD 模块

make -C/home/vinay/linux-3.9 M=$PWD 模块

试试下面的makefile

try below makefile

Makefile –

Makefile –

# if KERNELRELEASE is defined, we've been invoked from the
# kernel build system and can use its language.
ifneq (${KERNELRELEASE},)
obj-m := new-mod.o
# Otherwise we were called directly from the command line.
# Invoke the kernel build system.
  else
    KERNEL_SOURCE := /usr/src/linux
    PWD := $(shell pwd)
default:
      ${MAKE} -C ${KERNEL_SOURCE} SUBDIRS=${PWD} modules

clean:
      ${MAKE} -C ${KERNEL_SOURCE} SUBDIRS=${PWD} clean
endif

在上面你可以改变 KERNEL_SOURCE :=/usr/src/linux-->to.--> 你的 sr-code KERNEL_SOURCE :=

In above you can change KERNEL_SOURCE := /usr/src/linux-->to.--> your sr-code KERNEL_SOURCE := <path to compiled-src-code>

欲了解更多信息，请在下面找到喜欢

for further info find below liks

在构建内核模块时为什么我们需要/lib/modules 吗?

一个简单的linux设备驱动程序

如何构建-in linux中的设备驱动

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