87 lines
3.2 KiB
Nix
87 lines
3.2 KiB
Nix
{ config, pkgs, lib, ... }: {
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# boot.kernelPackages = lib.mkForce (pkgs.linuxPackagesFor pkgs.linuxLqxZfs);
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boot.kernelPackages = lib.mkForce pkgs.linuxPackages_lqx_clang;
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nixpkgs.overlays = let
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inherit (pkgs) overrideCC ccacheWrapper addAttrsToDerivation;
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llvmPackages = "llvmPackages_17";
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noBintools = { bootBintools = null; bootBintoolsNoLibc = null; };
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mkLLVMPlatform = platform: platform // { useLLVM = true; };
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# Get llvmPackages for host and build platforms, disabling bootBintools
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hostLLVM = pkgs.pkgsBuildHost.${llvmPackages}.override noBintools;
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# buildLLVM = pkgs.pkgsBuildBuild.${llvmPackages}.override noBintools; # unused
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# Get LLVM stdenv with clang
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stdenvClangUseLLVM = overrideCC hostLLVM.stdenv hostLLVM.clangUseLLVM;
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# set useLLVM to true for host and build platforms
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stdenvPlatformLLVM = stdenvClangUseLLVM.override (old: {
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hostPlatform = mkLLVMPlatform old.hostPlatform;
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buildPlatform = mkLLVMPlatform old.buildPlatform;
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});
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# Wrap clang with ccache
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stdenvCcacheLLVM = overrideCC stdenvPlatformLLVM (
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ccacheWrapper.override { cc = stdenvPlatformLLVM.cc; }
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);
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# Disable fortify hardening as LLVM does not support it, and disable response file
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stdenvLLVM = addAttrsToDerivation {
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env.NIX_CC_USE_RESPONSE_FILE = "0";
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hardeningDisable = [ "fortify" ];
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} stdenvCcacheLLVM;
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in [
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(final: prev: {
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linuxPackages_lqx_clang = prev.linuxPackages_lqx.extend (lpfinal: lpprev: {
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kernel = (lpprev.kernel.override {
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buildPackages = final.buildPackages // { stdenv = stdenvLLVM; };
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stdenv = stdenvLLVM;
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argsOverride = let
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version = "6.8.12";
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suffix = "lqx2";
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hash = "sha256-/CoEY+d95CFatz+P6yGerJ1p076QP7nCny4ipO3MXDQ=";
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no-dynamic-linker-patch = {
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name = "no-dynamic-linker";
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patch = ./no-dynamic-linker.patch;
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};
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in {
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inherit version;
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modDirVersion = lib.versions.pad 3 "${version}-${suffix}";
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src = prev.fetchFromGitHub {
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owner = "zen-kernel";
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repo = "zen-kernel";
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rev = "v${version}-${suffix}";
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inherit hash;
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};
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extraMakeFlags = [ "LLVM=1" "LLVM_IAS=1" ];
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kernelPatches = [ no-dynamic-linker-patch ] ++ lpprev.kernel.kernelPatches;
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structuredExtraConfig = with lib.kernel;
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lpprev.kernel.structuredExtraConfig //
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builtins.mapAttrs (_: v: lib.mkForce v) {
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CC_OPTIMIZE_FOR_PERFORMANCE_O3 = yes;
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# GENERIC_CPU3 = yes;
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MZEN = yes;
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INIT_ON_ALLOC_DEFAULT_ON = yes;
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INIT_STACK_ALL_ZERO = yes;
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LTO_CLANG_FULL = yes;
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MODULE_COMPRESS_XZ = no;
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MODULE_COMPRESS_ZSTD = yes;
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RCU_BOOST = no;
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RCU_BOOST_DELAY = option (freeform "500");
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RCU_LAZY = no;
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};
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};
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});
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});
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})
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];
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assertions = [{
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assertion = config.programs.ccache.enable;
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message = "To compile custom kernel you must enable and setup ccache";
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}];
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}
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