nixpkgs/pkgs/os-specific/linux/kernel/linux-2.6.23.nix
Eelco Dolstra 0aea0db581 * Put all packages that depend on a specific kernel (notably kernel
modules) together in an attribute set returned by the function
  "kernelPackagesFor" that takes a kernel as argument.  For instance,
  kernelPackages_2_6_23 is the result of calling this function with
  kernel_2_6_23.

  This is necessary in NixOS to make it easier to override the kernel:
  it's not enough to just specify a different kernel (via the
  boot.kernel option), but you also need matching nvidiaDriver, aufs,
  iwlwifi, etc.  Having a single attribute set that contains all
  kernel-related packages makes this much easier.

* The kernel now has a passthru attribute "features" that allows NixOS
  expressions to test whether a kernel has certain features.  For
  instance, the externel "iwlwifi" kernel module package should only
  be built on kernels < 2.6.24, as kernels >= 2.6.24 have iwlwifi
  support integrated.  So the NixOS expressions can do the test
  "kernel.features ? iwlwifi" to see if the iwlwifi package should be
  built.

  Kernel patches can declare additional features.  E.g., the fbsplash
  patch adds a "fbSplash" feature.

svn path=/nixpkgs/trunk/; revision=11881
2008-05-22 12:01:24 +00:00

92 lines
2.7 KiB
Nix

{ stdenv, fetchurl, perl, mktemp, module_init_tools
# A list of patches to apply to the kernel. Each element of this list
# should be an attribute set {name, patch} where `name' is a
# symbolic name and `patch' is the actual patch. The patch may
# optionally be compressed with gzip or bzip2.
, kernelPatches ? []
, # Whether to build a User-Mode Linux kernel.
userModeLinux ? false
, # Allows you to set your own kernel version suffix (e.g.,
# "-my-kernel").
localVersion ? ""
, # Your own kernel configuration file, if you don't want to use the
# default.
kernelConfig ? null
, # A list of additional statements to be appended to the
# configuration file.
extraConfig ? []
}:
assert stdenv.system == "i686-linux" || stdenv.system == "x86_64-linux";
let
lib = import ../../../lib;
version = "2.6.23.17";
in
stdenv.mkDerivation {
name = if userModeLinux then "user-mode-linux-${version}" else "linux-${version}";
passthru = {
inherit version;
# Combine the `features' attribute sets of all the kernel patches.
features = lib.fold (x: y: (if x ? features then x.features else {}) // y) {} kernelPatches;
};
builder = ./builder.sh;
src = fetchurl {
url = "mirror://kernel/linux/kernel/v2.6/linux-${version}.tar.bz2";
sha256 = "0lww6ywgl353xlaxcc3hg5d2q1vcydbqhddvkfpphr07zr7mwl32";
};
patches = map (p: p.patch) kernelPatches;
extraConfig =
let addNewlines = map (s: "\n" + s + "\n");
configFromPatches =
map (p: if p ? extraConfig then p.extraConfig else "") kernelPatches;
in lib.concatStrings (addNewlines (configFromPatches ++ extraConfig));
config =
if kernelConfig != null then kernelConfig else
if userModeLinux then ./config-2.6.23-uml else
if stdenv.system == "i686-linux" then ./config-2.6.23-i686-smp else
if stdenv.system == "x86_64-linux" then ./config-2.6.23-x86_64-smp else
abort "No kernel configuration for your platform!";
buildInputs = [perl mktemp];
arch =
if userModeLinux then "um" else
if stdenv.system == "i686-linux" then "i386" else
if stdenv.system == "x86_64-linux" then "x86_64" else
abort "Platform ${stdenv.system} is not supported.";
makeFlags = if userModeLinux then "ARCH=um SHELL=bash" else "";
inherit module_init_tools;
allowLocalVersion = false; # don't allow patches to set a suffix
inherit localVersion; # but do allow the user to set one.
meta = {
description =
(if userModeLinux then
"User-Mode Linux"
else
"The Linux kernel") +
(if kernelPatches == [] then "" else
" (with patches: "
+ lib.concatStrings (lib.intersperse ", " (map (x: x.name) kernelPatches))
+ ")");
};
}