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KERNEL-PACKAGE !!!KERNEL-PACKAGE NAME DESCRIPTION Advantages of using kernel-package Disadvantages of using make-kpkg FILES SEE ALSO BUGS AUTHOR ---- !!NAME kernel-package - A system for creating kernel related packages !!DESCRIPTION The __kernel-package__ package grew out of desire to automate the routine steps required to compile and install a custom kernel. If you are looking for instructions on how to use __kernel-package,__ please have a look at the manual __make-kpkg (1).__ Configuring instructions are to be found in __kernel-pkg.conf(5).__ !!Advantages of using kernel-package __i) Convenience.__ I used to compile kernels manually, and it involved a series of steps to be taken in order; kernel-package was written to take all the required steps (it has grown beyond that now, but essentially, that is what it does). This is especially important to novices: __make-kpkg__ takes all the steps required to compile a kernel, and installation of kernels is a snap. __ii) Multiple images support__ It allows you to keep multiple version of kernel images on your machine with no fuss. __iii) Multiple Flavours of the same kernel version__ It has a facility for you to keep multiple flavours of the same kernel version on your machine (you could have a stable 2.0.36 version, and a 2.0.36 version patched with the latest drivers, and not worry about contaminating the modules in ''/lib/modules).'' __iv) Built in defaults__ It knows that some architectures do not have vmlinuz (using vmlinux instead), and other use zImage rather than bzImage, and calls the appropriate target, and takes care of moving the correct file into place. __v) Module hooks__ Several other kernel module packages are hooked into __kernel-package,__ so one can seamlessly compile, say, __pcmcia__ modules at the same time as one compiles a kernel, and be assured that the modules so compiled are compatible. __vi) dpkg support__ It enables you to use the package management system to keep track of the kernels created. Using make-kpkg creates a .deb file, and dpkg can track it for you. This facilitates the task of other packages that depend on the kernel packages. __vii) Configuration tracking__ It keeps track of the configuration file for each kernel image in ''/boot,'' which is part of the image package, and hence is the kernel image and the configuration file are always together. __viii) Multiple config files__ It allows you to specify a directory with config files, with separate config files for each sub-architecture (even allows for different config files for i386, i486, etc). It is really neat for people who need to compile kernels for a variety of sub architectures. __ix) Auxiliary kernel .deb packages__ It allows to create a package with the headers, or the sources, also as a deb file, and enables the package management system to keep track of those (and there are packages that depend on the package management system being aware of these packages). __x) Maintainer script services__ Since the kernel image package is a full fledged Debian package, it comes with maintainer scripts, which take care of details like offering to make a boot disk, manipulating symbolic links in / so that you can make boot loader scripts static (just refer to the symbolic links, rather than the real image files; the names of the symbolic links do not change, but the kernel image file names change with the version). __xi) Sub architecture support__ There is support for the multitudinous sub architectures that have blossomed under the umbrella of the m68k and power-PC architectures. __xii) kernel-patch support__ There is support there for optionally applying patches to the kernel provided as a kernel-patch .deb file, and building a patched kernel auto-magically, and still retain an UN-patched kernel source tree. __xiii) Portable kernel images__ Allows one to compile a kernel for another computer, for example using a fast machine to compile the kernel for installation on a slower machine. This is really nice since the modules are all included in the .deb; and one does not have to deal with modules manually. __xiv) Customizations on the target host__ The postinst looks at a configuration file on the installation machine (as opposed to the machine that the image was compiled on), and allows the local admin to decide on issues of symbolic links, and whether the boot loader stuff must be run, and whether one wants to create a boot floppy or not. __xv) runtime hooks__ The postinst and the postrm scripts allow the local admin on the installation machine to add a script into runtime hooks; this can allow, amongst other things, grub users to add and remove kernel image stanzas from the grub menu (example scripts to do this are in the package). __xvi) Append descriptive bits to the kernel version__ One can append to the kernel version on the command line, or by setting an environment variable. So if your kernel is called kernel-image-2.4.1John.Home; it is unlikely to be overridden by the official 2.4.1 kernel, since they are not the same version. !!Disadvantages of using make-kpkg __i) Automation.__ This is a cookie cutter approach to compiling kernels, and there are people who like being close to the bare metal. __ii) Non traditional__ This is not how it is done in the non-Debian world. This flouts tradition. (It has been pointed out, though, that this is fast becoming Debian tradition). __iii) Needs superuser__ It forces you to use __fakeroot__ or __sudo__ or __super__ or be root to create a kernel image .deb file (this is not as bad as it used to be before __fakeroot)__ !!FILES ''/etc/kernel-pkg.conf. /etc/kernel-img.conf.'' !!SEE ALSO make-kpkg(1), make(1), __The GNU Make manual.__ !!BUGS There are no bugs. Any resemblance thereof is delirium. Really. !!AUTHOR This manual page was written by Manoj Srivastava ---- See also: http://newbiedoc.sourceforge.net/system/kernel-pkg.html
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