How to quickly customize the binary kernel RPM package in Centos

1, RPM pre-production environment preparation:

Yum install-y ncurses-devel qt-devel rpm-build redhat-rpm-config asciidoc hmaccalc perl-extutils-embed xmlto audit-libs- Devel binutils-devel elfutils-devel elfutils-libelf-devel newt-devel python-devel zlib-devel BC

2. Prepare the source code component of the kernel

cd/usr/src/

wget-c wget Https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.9.3.tar.xz

TAR-XVF LINUX-4.9.3.TAR.XZ

Ln-s linux-4.9.3 Linux

CD Linux

Make oldconfig # Verify and update configuration. config file (if you only want to modify some small places on the basis of the original kernel configuration) you are basically the default, all the way to the return

Make menuconfig # Simple graphical kernel configuration management, generating a. config file

3. At this point, we can start compiling the new kernel RPM package.

Make rpm # automatically generates RPMTREE,KERNEL.SPEC files, compiles automatically, and generates all RPM package components, including the debug package.

This time we'll wait, or have a cup of afternoon tea or something.

OK, let's find the kernel RPM package that has been compiled.

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4. Install the new kernel

RPM-UVH kernel-*-.rpm

5. Reboot to verify kernel version

Uname-a

Second, RPM package depth customization

1, we first create a good rpm "Production workshop" (I think this may be more image).

Yum install rpmdevtools # RPM Production Shop Quick Create tool

useradd-m Builder # Creates a new temporary user to create the RPM package, and if an error occurs, the build program does not break the existing system environment.

Su-builder

Rpmdev-setuptree # Creating a "Production workshop"

The following directory structure will be generated in the builder user's home directory:

Tree-l 1 ~/rpmbuild/

rpmbuild/

├──build

├──rpms

├──sources

├──specs

└──srpms

2. Prepare before compiling

At this point we need to collect the new kernel source package to put in the/home/builder/rpmbuild/sources directory

Su-builder

CD ~/rpmbuild/sources

Wget-c https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.9.3.tar.xz

Note: Rpmbuild is done by gzip to do building before the source package decompression work, so need to convert this compression package into. tar.gz format.

# There's no record here.

cp/boot/config-' Uname-r '. # Copy the existing kernel configuration file config-' Uname-r ' to the SOURCES directory

To switch to the specs directory, generate the Kernel.spec:

Tar jxvf. /sources/linux-4.9.3.tar.xz -C.

Bash.. /linux-4.9.3/scripts/package/mkspec >./kernel.spec

RM-RF linux-4.9.3

# We need to use the script provided in the source package to generate the Kernel.spec file manually

# Remember to clean up the linux-4.9.3 folder after the build Kernel.spec is finished

Vim Kernel.spec # can be customized according to the individual circumstances of the depth

To this, our preparations are basically completed, the directory structure and content are as follows:

Tree Rpmbuild/-A

rpmbuild/

├──build

├──rpms

├──sources

│   ├──config-' Uname-r '

│   └── linux-4.9.3. tar.gz

├──specs

│   └──kernel.spec

└──srpms

5 directories, 3 files

3, OK, now we officially start compiling the kernel binary RPM package:

RPMBUILD-BB--with baseonly--without debug--without debuginfo--target= ' uname-m ' Kernel.spec

Rpmbuild parameter Description:

(1)--with <option> Specifies that a kernel is compiled, and option options are baseonly, Smponly, and Xenonly.

(2)--without <option> Specify the removal of some function modules, optional option has Xen, SMP, Up, PAE, Kdump, Debug and Debuginfo, etc. Where the debug option rejects the debug code in the kernel, the Debuginfo option disables the creation of the Kernel-debuginfo package.

When you are finished, get the RPM installation package in the ~/rpmbuild/rpms/' uname-m '/directory.

This article is from the "Silence" blog, make sure to keep this source http://silencezone.blog.51cto.com/3613477/1892067

How to quickly customize the binary kernel RPM package in Centos