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{ buildPackages
, ncurses
, callPackage
, perl
, bison ? null
, flex ? null
, stdenv
, # The kernel source tarball.
src
, # The kernel version.
version
, # Allows overriding the default defconfig
defconfig ? null
, # Legacy overrides to the intermediate kernel config, as string
extraConfig ? ""
, # kernel intermediate config overrides, as a set
structuredExtraConfig ? {}
, # The version number used for the module directory
modDirVersion ? version
, # 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 ? []
, ignoreConfigErrors ? hostPlatform.platform.name != "pc" ||
hostPlatform != stdenv.buildPlatform
, extraMeta ? {}
, hostPlatform
# easy overrides to hostPlatform.platform members
, autoModules ? hostPlatform.platform.kernelAutoModules
, preferBuiltin ? hostPlatform.platform.kernelPreferBuiltin or false
, kernelArch ? hostPlatform.platform.kernelArch
, mkValueOverride ? null
, ...
}:
assert stdenv.isLinux;
let
lib = stdenv.lib;
# Combine the `features' attribute sets of all the kernel patches.
kernelFeatures = lib.fold (x: y: (x.features or {}) // y) ({
iwlwifi = true;
efiBootStub = true;
needsCifsUtils = true;
netfilterRPFilter = true;
grsecurity = false;
xen_dom0 = false;
} // features) kernelPatches;
intermediateNixConfig = import ./common-config.nix {
inherit stdenv version structuredExtraConfig mkValueOverride;
# append extraConfig for backwards compatibility but also means the user can't override the kernelExtraConfig part
extraConfig = extraConfig + lib.optionalString (hostPlatform.platform ? kernelExtraConfig) hostPlatform.platform.kernelExtraConfig;
features = kernelFeatures; # Ensure we know of all extra patches, etc.
};
kernelConfigFun = baseConfig:
let
configFromPatches =
map ({extraConfig ? "", ...}: extraConfig) kernelPatches;
in lib.concatStringsSep "\n" ([baseConfig] ++ configFromPatches);
configfile = stdenv.mkDerivation {
inherit ignoreConfigErrors autoModules preferBuiltin kernelArch;
name = "linux-config-${version}";
generateConfig = ./generate-config.pl;
kernelConfig = kernelConfigFun intermediateNixConfig;
passAsFile = [ "kernelConfig" ];
depsBuildBuild = [ buildPackages.stdenv.cc ];
nativeBuildInputs = [ perl ]
++ lib.optionals (stdenv.lib.versionAtLeast version "4.16") [ bison flex ];
platformName = hostPlatform.platform.name;
# e.g. "defconfig"
kernelBaseConfig = if defconfig != null then defconfig else hostPlatform.platform.kernelBaseConfig;
# e.g. "bzImage"
kernelTarget = hostPlatform.platform.kernelTarget;
prePatch = kernel.prePatch + ''
# Patch kconfig to print "###" after every question so that
# generate-config.pl from the generic builder can answer them.
sed -e '/fflush(stdout);/i\printf("###");' -i scripts/kconfig/conf.c
'';
preUnpack = kernel.preUnpack or "";
inherit (kernel) src patches;
buildPhase = ''
export buildRoot="''${buildRoot:-build}"
# Get a basic config file for later refinement with $generateConfig.
make HOSTCC=${buildPackages.stdenv.cc.targetPrefix}gcc -C . O="$buildRoot" $kernelBaseConfig ARCH=$kernelArch
# Create the config file.
echo "generating kernel configuration..."
ln -s "$kernelConfigPath" "$buildRoot/kernel-config"
DEBUG=1 ARCH=$kernelArch KERNEL_CONFIG="$buildRoot/kernel-config" AUTO_MODULES=$autoModules \
PREFER_BUILTIN=$preferBuiltin BUILD_ROOT="$buildRoot" SRC=. perl -w $generateConfig
'';
installPhase = "mv $buildRoot/.config $out";
enableParallelBuilding = true;
};
kernel = (callPackage ./manual-config.nix {}) {
inherit version modDirVersion src kernelPatches stdenv extraMeta configfile hostPlatform;
config = { CONFIG_MODULES = "y"; CONFIG_FW_LOADER = "m"; };
};
passthru = {
features = kernelFeatures;
passthru = kernel.passthru // (removeAttrs passthru [ "passthru" ]);
};
in lib.extendDerivation true passthru kernel
|