Saket,

Building a kernel via an SRPM is different from building a kernel from source. The end result from the former process is an RPM or set of RPMs, whereas the latter just no different from compiling most other open source projects from source.

Ideally you should be doing this in a Mock environment (building RPMs with Mock).

If you're looking to rebuild the kernel SRPM with a few modifications, you'll need to the following:

# Install the build dependencies yum install bash bzip2 coreutils cpio diffutils epel-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build rpmdevtools sed shadow-utils tar unzip util-linux-ng which xz yum-utils

# Install the specific dependencies for your SRPM yum-builddep /path/to/your.src.rpm

I'd first rebuild the SRPM to make sure it actually works and doesn't require anything additional (note that this can take forever on slower machines):

rpmbuild --rebuild /path/to/your.src.rpm

If that works, you'll find in your home directory a directory called rpmbuild; inside it will be several other directories. Inside the SOURCES directory, there will be a few config-* files; find the one that matches your architecture, e.g., x86_64. You can edit that to provide the appropriate configuration for your kernel.

Afterward, go into the SPECS folder and do this to increment the release tag to help differentiate your kernel from upstream:

rpmdev-bumpspec -s "s" kernel.spec

Then build your custom kernel:

rpmbuild -ba kernel.spec

Assuming it build without issues result will be several RPMs in the RPMS directory inside ~/rpmbuild; install the ones you need (either use yum to install them or rpm -ivh--the kernel itself should never be installed with -Uvh) and reboot. Shatil (@shatil)

On Fri, Mar 28, 2014 at 11:03 AM, Akemi Yagi amyagi@gmail.com wrote:

On Fri, Mar 28, 2014 at 10:46 AM, Saket Sinha saket.sinha89@gmail.com wrote:

...

Hi,

I am working on CentOS 6.5 which has 2.6.32-431 kernel.

I have a problem with my driver and I need to enable Kernel-Memory leak in the kernel for which I will have to recompile the kernel.

I get the kernel source tree from the the source rpm for my running kernel from below link-

http://vault.centos.org/6.5/updates/Source/SPackages/kernel-2.6.32-431.11.2....

and I try to build the kernel according to the below link on CentOS Wiki -

http://www.centos.org/docs/rhel-sag-en-3/s1-custom-kernel-modularized.html

according to which it tells me , after make menuconfig( and customizing my configuration), I need to follow the following steps-

1. make bzImage
2. make modules
3. make modules_install
4. make install

but I get errors in the first step only-(make bzImage)

Kindly suggest me as to what I am doing wrong.

First off, for a question like this, it's best to use the CentOS main list (not -devel) or the forums to get assistance.

Second, the doc link you showed is the one written for RHEL-3. The correct wiki page to read is:

http://wiki.centos.org/HowTos/Custom_Kernel

Third, you can file a request at bugs.centos.org to enable the option in the centosplus kernel. This way, you would do not have to recompile your own kernel.

Hope this helps,

Akemi _______________________________________________ CentOS-devel mailing list CentOS-devel@centos.org http://lists.centos.org/mailman/listinfo/centos-devel