138 lines
4 KiB
Nix
138 lines
4 KiB
Nix
{ stdenv, fetchurl, perl, mktemp, module_init_tools
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, # The kernel source tarball.
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src
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, # The kernel version.
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version
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, # The kernel configuration.
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config
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, # The kernel configuration when cross building.
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configCross ? {}
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, # An attribute set whose attributes express the availability of
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# certain features in this kernel. E.g. `{iwlwifi = true;}'
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# indicates a kernel that provides Intel wireless support. Used in
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# NixOS to implement kernel-specific behaviour.
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features ? {}
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, # A list of patches to apply to the kernel. Each element of this list
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# should be an attribute set {name, patch} where `name' is a
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# symbolic name and `patch' is the actual patch. The patch may
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# optionally be compressed with gzip or bzip2.
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kernelPatches ? []
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, # Whether to build a User-Mode Linux kernel.
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userModeLinux ? false
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, # Whether to build a Xen kernel.
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xen ? false
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, # Allows you to set your own kernel version suffix (e.g.,
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# "-my-kernel").
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localVersion ? ""
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, preConfigure ? ""
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, extraMeta ? {}
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, ubootChooser ? null
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, ...
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}:
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assert stdenv.system == "i686-linux" || stdenv.system == "x86_64-linux"
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|| stdenv.system == "armv5tel-linux";
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assert stdenv.platform.name == "sheevaplug" -> stdenv.platform.uboot != null;
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let
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lib = stdenv.lib;
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kernelConfigFun = baseConfig:
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let
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configFromPatches =
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map ({extraConfig ? "", ...}: extraConfig) kernelPatches;
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in lib.concatStringsSep "\n" ([baseConfig] ++ configFromPatches);
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in
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stdenv.mkDerivation {
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name = if userModeLinux then "user-mode-linux-${version}" else "linux-${version}";
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passthru = {
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inherit version;
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# Combine the `features' attribute sets of all the kernel patches.
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features = lib.fold (x: y: (if x ? features then x.features else {}) // y) features kernelPatches;
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};
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builder = ./builder.sh;
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generateConfig = ./generate-config.pl;
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inherit preConfigure src module_init_tools localVersion;
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patches = map (p: p.patch) kernelPatches;
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kernelConfig = kernelConfigFun config;
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# For UML and non-PC, just ignore all options that don't apply (We are lazy).
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ignoreConfigErrors = (userModeLinux || stdenv.platform.name != "pc");
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buildNativeInputs = [ perl mktemp ];
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buildInputs = lib.optional (stdenv.platform.uboot != null)
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(ubootChooser stdenv.platform.uboot);
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platformName = stdenv.platform.name;
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kernelBaseConfig = stdenv.platform.kernelBaseConfig;
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kernelTarget = stdenv.platform.kernelTarget;
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autoModules = stdenv.platform.kernelAutoModules;
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# Should we trust platform.kernelArch? We can only do
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# that once we differentiate i686/x86_64 in platforms.
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arch =
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if xen then "xen" else
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if userModeLinux then "um" else
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if stdenv.system == "i686-linux" then "i386" else
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if stdenv.system == "x86_64-linux" then "x86_64" else
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if stdenv.system == "armv5tel-linux" then "arm" else
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abort "Platform ${stdenv.system} is not supported.";
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crossAttrs = let
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cp = stdenv.cross.platform;
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in
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assert cp.name == "sheevaplug" -> cp.uboot != null;
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{
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arch = cp.kernelArch;
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platformName = cp.name;
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kernelBaseConfig = cp.kernelBaseConfig;
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kernelTarget = cp.kernelTarget;
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autoModules = cp.kernelAutoModules;
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# Just ignore all options that don't apply (We are lazy).
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ignoreConfigErrors = true;
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kernelConfig = kernelConfigFun configCross;
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# The substitution of crossAttrs happens *after* the stdenv cross adapter sets
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# the parameters for the usual stdenv. Thus, we need to specify
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# the ".hostDrv" in the buildInputs here.
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buildInputs = lib.optional (cp.uboot != null) (ubootChooser cp.uboot).hostDrv;
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};
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meta = {
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description =
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(if userModeLinux then
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"User-Mode Linux"
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else
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"The Linux kernel") +
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(if kernelPatches == [] then "" else
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" (with patches: "
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+ lib.concatStrings (lib.intersperse ", " (map (x: x.name) kernelPatches))
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+ ")");
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license = "GPLv2";
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homepage = http://www.kernel.org/;
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maintainers = [ lib.maintainers.eelco ];
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} // extraMeta;
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}
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