f620b1b693
- defined buildLinux as generic.nix instead of manual-config.nix. This makes kernel derivations a tad more similar to your typical derivations. - moved $buildRoot to within the source folder, this way it doesn't have to be created before the unpackPhase and make it easier to work on kernel source without running the unpackPhase
127 lines
4.0 KiB
Nix
127 lines
4.0 KiB
Nix
{ buildPackages, runCommand, nettools, bc, perl, gmp, libmpc, mpfr, openssl
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, ncurses
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, libelf
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, utillinux
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, writeTextFile, ubootTools
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, callPackage
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}:
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{ stdenv, buildPackages, perl, buildLinux
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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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, # Overrides to the kernel config.
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extraConfig ? ""
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, # The version number used for the module directory
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modDirVersion ? version
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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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, ignoreConfigErrors ? hostPlatform.platform.name != "pc" ||
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hostPlatform != stdenv.buildPlatform
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, extraMeta ? {}
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, hostPlatform
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, ...
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} @ args:
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assert stdenv.isLinux;
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let
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lib = stdenv.lib;
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# Combine the `features' attribute sets of all the kernel patches.
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kernelFeatures = lib.fold (x: y: (x.features or {}) // y) ({
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iwlwifi = true;
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efiBootStub = true;
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needsCifsUtils = true;
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netfilterRPFilter = true;
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} // features) kernelPatches;
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config = import ./common-config.nix {
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inherit stdenv version ;
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# append extraConfig for backwards compatibility but also means the user can't override the kernelExtraConfig part
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extraConfig = extraConfig + lib.optionalString (hostPlatform ? kernelExtraConfig ) hostPlatform.kernelExtraConfig;
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features = kernelFeatures; # Ensure we know of all extra patches, etc.
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};
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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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configfile = stdenv.mkDerivation {
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inherit ignoreConfigErrors;
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name = "linux-config-${version}";
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generateConfig = ./generate-config.pl;
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kernelConfig = kernelConfigFun config;
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depsBuildBuild = [ buildPackages.stdenv.cc ];
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nativeBuildInputs = [ perl ];
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platformName = hostPlatform.platform.name;
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# e.g. "defconfig"
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kernelBaseConfig = hostPlatform.platform.kernelBaseConfig;
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# e.g. "bzImage"
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kernelTarget = hostPlatform.platform.kernelTarget;
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autoModules = hostPlatform.platform.kernelAutoModules;
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preferBuiltin = hostPlatform.platform.kernelPreferBuiltin or false;
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arch = hostPlatform.platform.kernelArch;
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prePatch = kernel.prePatch + ''
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# Patch kconfig to print "###" after every question so that
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# generate-config.pl from the generic builder can answer them.
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sed -e '/fflush(stdout);/i\printf("###");' -i scripts/kconfig/conf.c
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'';
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inherit (kernel) src patches preUnpack;
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buildPhase = ''
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export buildRoot="''${buildRoot:-build}"
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# Get a basic config file for later refinement with $generateConfig.
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make HOSTCC=${buildPackages.stdenv.cc.targetPrefix}gcc -C . O="$buildRoot" $kernelBaseConfig ARCH=$arch
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# Create the config file.
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echo "generating kernel configuration..."
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echo "$kernelConfig" > "$buildRoot/kernel-config"
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DEBUG=1 ARCH=$arch KERNEL_CONFIG="$buildRoot/kernel-config" AUTO_MODULES=$autoModules \
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PREFER_BUILTIN=$preferBuiltin BUILD_ROOT="$buildRoot" SRC=. perl -w $generateConfig
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'';
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installPhase = "mv $buildRoot/.config $out";
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enableParallelBuilding = true;
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};
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kernel = (callPackage ./manual-config.nix {}) {
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inherit version modDirVersion src kernelPatches stdenv extraMeta configfile hostPlatform;
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config = { CONFIG_MODULES = "y"; CONFIG_FW_LOADER = "m"; };
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};
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passthru = {
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features = kernelFeatures;
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passthru = kernel.passthru // (removeAttrs passthru [ "passthru" ]);
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};
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in lib.extendDerivation true passthru kernel
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