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{ stdenv, fetchurl, perl, mktemp, module_init_tools
, # The kernel source tarball.
src
, # The kernel version.
version
, # The kernel configuration.
config
, # The kernel configuration when cross building.
configCross ? {}
, # An attribute set whose attributes express the availability of
# certain features in this kernel. E.g. `{iwlwifi = true;}'
# indicates a kernel that provides Intel wireless support. Used in
# NixOS to implement kernel-specific behaviour.
features ? {}
, # 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 ? ""
, preConfigure ? ""
, extraMeta ? {}
, ubootChooser ? null
, postInstall ? ""
, # After the builder did a 'make all' (kernel + modules)
# we force building the target asked: bzImage/zImage/uImage/...
postBuild ? "make $makeFlags $kernelTarget; make $makeFlags -C scripts unifdef"
, ...
}:
assert stdenv.system == "i686-linux" || stdenv.system == "x86_64-linux"
|| stdenv.system == "armv5tel-linux" || stdenv.system == "mips64-linux";
assert stdenv.platform.name == "sheevaplug" -> stdenv.platform.uboot != null;
let
lib = stdenv.lib;
kernelConfigFun = baseConfig:
let
configFromPatches =
map ({extraConfig ? "", ...}: extraConfig) kernelPatches;
in lib.concatStringsSep "\n" ([baseConfig] ++ configFromPatches);
in
stdenv.mkDerivation {
name = if userModeLinux then "user-mode-linux-${version}" else "linux-${version}";
enableParallelBuilding = true;
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) features kernelPatches;
};
builder = ./builder.sh;
generateConfig = ./generate-config.pl;
inherit preConfigure src module_init_tools localVersion postInstall;
patches = map (p: p.patch) kernelPatches;
kernelConfig = kernelConfigFun config;
# For UML and non-PC, just ignore all options that don't apply (We are lazy).
ignoreConfigErrors = (userModeLinux || stdenv.platform.name != "pc");
buildNativeInputs = [ perl mktemp ];
buildInputs = lib.optional (stdenv.platform.uboot != null)
(ubootChooser stdenv.platform.uboot);
platformName = stdenv.platform.name;
kernelBaseConfig = stdenv.platform.kernelBaseConfig;
kernelTarget = stdenv.platform.kernelTarget;
autoModules = stdenv.platform.kernelAutoModules;
# Should we trust platform.kernelArch? We can only do
# that once we differentiate i686/x86_64 in platforms.
arch =
if userModeLinux then "um" else
if stdenv.system == "i686-linux" then "i386" else
if stdenv.system == "x86_64-linux" then "x86_64" else
if stdenv.system == "armv5tel-linux" then "arm" else
if stdenv.system == "mips64-linux" then "mips" else
abort "Platform ${stdenv.system} is not supported.";
crossAttrs = let
cp = stdenv.cross.platform;
in
assert cp.name == "sheevaplug" -> cp.uboot != null;
{
arch = cp.kernelArch;
platformName = cp.name;
kernelBaseConfig = cp.kernelBaseConfig;
kernelTarget = cp.kernelTarget;
autoModules = cp.kernelAutoModules;
# Just ignore all options that don't apply (We are lazy).
ignoreConfigErrors = true;
kernelConfig = kernelConfigFun configCross;
# The substitution of crossAttrs happens *after* the stdenv cross adapter sets
# the parameters for the usual stdenv. Thus, we need to specify
# the ".hostDrv" in the buildInputs here.
buildInputs = lib.optional (cp.uboot != null) (ubootChooser cp.uboot).hostDrv;
};
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))
+ ")");
license = "GPLv2";
homepage = http://www.kernel.org/;
maintainers = [ lib.maintainers.eelco ];
platforms = lib.platforms.linux;
} // extraMeta;
}
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