Dear Wiki user, You have subscribed to a wiki page or wiki category on "Fedora Project Wiki" for change notification. The following page has been changed by SamFolkWilliams: http://fedoraproject.org/wiki/Docs/Beats/Kernel?action=diff&rev2=93&rev1=92 The comment on the change is: moving kernel development stuff to new CustomKernel page ------------------------------------------------------------------------------ Fedora [[GetVal(DocsDict,BeatsVer)]] does not include the kernel-source package provided by older versions since only the kernel-devel package is required now to build external modules. Configured sources are available, as described in the kernel flavors section. + /!\ For information on kernel development and working with custom kernels, please see the new http://fedoraproject.org/wiki/Docs/CustomKernel page. - [[Admonition("note", "Instructions Refer to Current Kernel", "To simplify the following directions, we have assumed that you want to configure the kernel sources to match your currently-running kernel. In the steps below, the expression <version> refers to the kernel version shown by the command: {{{uname -r}}}."]] - - Users who require access to Fedora original kernel sources can find them in the kernel .src.rpm package. To create an exploded source tree from this file, perform the following steps: - - [[Admonition("note", "Do Not Build Packages as Super-user (root)", "Building packages as the superuser is inherently dangerous and is not required, even for the kernel. These instructions allow you to install the kernel source as a normal user. Many general information sites refer to `/usr/src/linux` in their kernel instructions. If you use these instructions, simply substitute `~/rpmbuild/BUILD/kernel-<version>/linux-<version>.<arch>`."]] - - 1. Prepare an RPM package building environment in your home directory. Run the following commands: - - {{{su -c 'yum install rpmdevtools yum-utils' - rpmdev-setuptree - }}} - - Enter the `root` password when prompted. - - 1. Download the `kernel-<version>.src.rpm` file. Enable any appropriate source repositories, such as Core, Updates, or Testing, with the `-e` switch: - - {{{yumdownloader -e core-source -e updates-source --source kernel-<version> - }}} - - Enter the `root` password when prompted. If you specify only `kernel` without a version, {{{yumdownloader}}} downloads the source for the latest Fedora kernel from the enabled repositories. - - 1. Install `kernel-<version>.src.rpm` using the command: - - {{{su -c 'rpm -Uvh kernel-<version>.src.rpm' - }}} - - This command writes the RPM contents into `${HOME}/rpmbuild/SOURCES` and `${HOME}/rpmbuild/SPECS`, where `${HOME}` is your home directory. - - [[Admonition("note", "Space Required", "The full kernel building process may require several gigabytes of extra space on the file system containing your home directory."]] - - 1. Prepare the kernel sources using the commands: - - {{{cd ~/rpmbuild/SPECS - rpmbuild -bp --target $(uname -m) kernel-2.6.spec - }}} - - The kernel source tree is located in the `~/rpmbuild/BUILD/kernel-<version>/linux-<version>.<arch>` directory. - - 1. The configurations for the specific kernels shipped in Fedora [[GetVal(DocsDict,BeatsVer)]] are in the `~/rpmbuild/BUILD/kernel-<version>/linux-<version>.<arch>/configs` directory. For example, the i686 configuration file is named `~/rpmbuild/BUILD/kernel-<version>/linux-<version>.<arch>/configs/kernel-<version>-i686.config`. Issue the following command to place the desired configuration file in the proper place for building: - - {{{cp configs/<desired-config-file> .config - }}} - - 1. Every kernel gets a name based on its version number. This is the value the {{{uname -r}}} command displays. The kernel name is defined by the first four lines of the kernel `Makefile`. The `Makefile` has been changed to generate a kernel with a ''different'' name from that of the running kernel. To be accepted by the running kernel, a module must be compiled for a kernel with the correct name. To do this, you must edit the kernel `Makefile`. - - For example, if the {{{uname -r}}} returns the string `2.6.17-1.2345_FC6`, change the `EXTRAVERSION` definition from this: - - {{{EXTRAVERSION = -prep - }}} - - to this: - - {{{EXTRAVERSION = -1.2345_FC6 - }}} - - That is, substitute everything from the final dash onward. - - 1. Run the following command: - - {{{make oldconfig - }}} - - You may then proceed as usual. - - [[Admonition("note","Building Kernel Binary RPMs","Normally, kernels for Fedora are built using the `rpmbuild` utility and a specfile. Your results may vary if you use the kernel's built-in `make rpm` target.")]] === Building Only Kernel Modules === -- Fedora-relnotes-content mailing list Fedora-relnotes-content@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-relnotes-content
