WSL 运行make提示/lib/modules/xxx/build: No such file or directory. Stop.错误解决办法

错误描述

在WSL下试图编译驱动文件，使用make命令编译c文件出现以下报错：

wang@DESKTOP-55P8P0H:/mnt/d/GithubDesktop/linux-driver-learning-experiment/1.hello_driver$ make
make -C /lib/modules/5.10.16.3-microsoft-standard-WSL2/build M=/mnt/d/GithubDesktop/linux-driver-learning-experiment/1.hello_driver modules
make[1]: *** /lib/modules/5.10.16.3-microsoft-standard-WSL2/build: No such file or directory.  Stop.
make: *** [Makefile:5: all] Error 2

错误原因

WSL2的内核是修改过的，无法使用 ubuntu上游的内核头文件和modules文件，因此，我们需要手动编译并安装一个版本。

解决步骤

参考：WSL2编译和安装内核以支持驱动编译

1. 下载对应版本的内核代码

查看内核版本，我的是5.10.16.3版本

wang@DESKTOP-55P8P0H:~/kernel$ uname -r
5.10.16.3-microsoft-standard-WSL2

到WSL git仓库，找到对应的release

git clone --depth=1 https://github.com/microsoft/WSL2-Linux-Kernel

复制下载链接，下载tar包，解压

wget https://github.om/microsoft/WSL2-Linux-Kernel/archive/refs/tags/linux-msft-wsl-5.10.16.3.tar.gz
tar -cvzf linux-msft-wsl-5.10.16.3.tar.gz

2. 编译和安装

cd WSL2-Linux-Kernel-linux-msft-wsl-5.10.16.3
LOCALVERSION= make KCONFIG_CONFIG=Microsoft/config-wsl -j8
sudo LOCALVERSION= make KCONFIG_CONFIG=Microsoft/config-wsl modules_install -j8

运行第二步出现问题：

ERROR: Kernel configuration is invalid.
       include/generated/autoconf.h or include/config/auto.conf are missing.
       Run 'make oldconfig && make prepare' on kernel src to fix it.

尝试运行make oldconfig && make prepare
再次报错：

*
* Unable to find the ncurses package.
* Install ncurses (ncurses-devel or libncurses-dev
* depending on your distribution).
*
* You may also need to install pkg-config to find the
* ncurses installed in a non-default location.
*
make[1]: *** [scripts/kconfig/Makefile:211: scripts/kconfig/mconf-cfg] Error 1
make: *** [Makefile:619: menuconfig] Error 2

需要安装ncurses、flex和bison

sudo apt install ncurses-dev
sudo apt install flex
sudo apt install bison

然后运行make menuconfig选择<Exit>直接退出，自动生成.config文件

再次运行wangmake oldconfig && make prepare
报错：

scripts/extract-cert.c:21:10: fatal error: openssl/bio.h: No such file or directory
   21 | #include <openssl/bio.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
make[1]: *** [scripts/Makefile.host:95: scripts/extract-cert] Error 1
make: *** [Makefile:1234: scripts] Error 2

安装libssl-dev

sudo apt install libssl-dev

再次尝试第二步，成功编译内核。

3. 安装headers

sudo make headers_install ARCH=x86_64 INSTALL_HDR_PATH=/usr

结果

回到工作目录，再次尝试编译，成功。