linux 内核编译

本文主要记录内核编译的步骤

首先来说下编译内核是怎么实现的，其实这方面网上有很多教程，也有很多博客讲到来这点，但是就我个人经验而言，我会将最简洁但又实用的办法分享出来，大概就几条命令的事吧(以下命令均在root下运行)。

make menuconfig
选择需要模块化的地方，正确的话会出现下述画面。

这里写图片描述

如果出现错误，则缺少相应的文件，此时执行 apt-get install libncurses5-dev libncursesw5-dev libelf-dev libssl-dev flex bison dpkg-dev -y，然后再执行make menuconfig即可。

此时需要选择需要模块化的地方，我当时是为将文件系统模块化，所以进入file system，通过空格来选‘M’还是‘*’,M表示模块化，*表示编译内核时就将该模块编译进去，后期无法自由删除修改。所以，在file system上面对所有条目而言，能选‘M’的都选‘M’，不能选的再选‘*’。最后保存下结果即可。

compile locally

make -j4

编译5.4内核时需要签名文件。
在.config中注释掉如下两行:

1
2
3

#CONFIG_MODULE_SIG_KEY="certs/signing_key.pem"
CONFIG_SYSTEM_TRUSTED_KEYRING=y
#CONFIG_SYSTEM_TRUSTED_KEYS="certs/rhel.pem"

进行

make -j

File name or PKCS#11 URI of module signing key (MODULE_SIG_KEY) [certs/signing_key.pem] (NEW)
Provide system-wide ring of trusted keys (SYSTEM_TRUSTED_KEYRING) [Y/?] y
  Additional X.509 keys for default system keyring (SYSTEM_TRUSTED_KEYS) [] (NEW)
  Reserve area for inserting a certificate without recompiling (SYSTEM_EXTRA_CERTIFICATE) [N/y/?] n
  Provide a keyring to which extra trustable keys may be added (SECONDARY_TRUSTED_KEYRING) [N/y/?] n
Provide system-wide ring of blacklisted keys (SYSTEM_BLACKLIST_KEYRING) [Y/n/?] y
  Hashes to be preloaded into the system blacklist keyring (SYSTEM_BLACKLIST_HASH_LIST) []
  HOSTCC  arch/x86/tools/relocs_32.o
  HOSTCC  arch/x86/tools/relocs_64.o

全部回车默认

sudo make modules_install -j4
sudo make install -j4
sudo reboot

上面命令的后面加上 -j4 表示分成4个任务运行，只为了加快速度。

deb包安装

make -j4 bindeb-pkg

cd ..
sudo dpkg -i *.deb

rpm package

1	make -j4 binrpm-pkg

If the operations are performed without errors, the rpmbuild directory tree will be created in our home directory. The built rpm package will be available in a subdirectory of ~/rpmbuild/RPMS named after the architecture of the system.

1	yum install *.rpm

参考资料：

文章目录

compile locally

deb包安装

rpm package