{ stdenvNoCC, lib, buildPackages, fetchurl, perl, elf-header }: let makeLinuxHeaders = { src, version, patches ? [] }: stdenvNoCC.mkDerivation { inherit src; pname = "linux-headers"; inherit version; ARCH = stdenvNoCC.hostPlatform.platform.kernelArch or stdenvNoCC.hostPlatform.kernelArch; # It may look odd that we use `stdenvNoCC`, and yet explicit depend on a cc. # We do this so we have a build->build, not build->host, C compiler. depsBuildBuild = [ buildPackages.stdenv.cc ]; # `elf-header` is null when libc provides `elf.h`. nativeBuildInputs = [ perl elf-header ]; extraIncludeDirs = lib.optional stdenvNoCC.hostPlatform.isPowerPC ["ppc"]; inherit patches; hardeningDisable = lib.optional stdenvNoCC.buildPlatform.isDarwin "format"; makeFlags = [ "SHELL=bash" # Avoid use of runtime build->host compilers for checks. These # checks only cared to work around bugs in very old compilers, so # these changes should be safe. "cc-version:=9999" "cc-fullversion:=999999" # `$(..)` expanded by make alone "HOSTCC:=$(CC_FOR_BUILD)" "HOSTCXX:=$(CXX_FOR_BUILD)" ]; # Skip clean on darwin, case-sensitivity issues. buildPhase = lib.optionalString (!stdenvNoCC.buildPlatform.isDarwin) '' make mrproper $makeFlags '' + '' make headers $makeFlags ''; checkPhase = '' make headers_check $makeFlags ''; # The following command requires rsync: # make headers_install INSTALL_HDR_PATH=$out $makeFlags # but rsync depends on popt which does not compile on aarch64 without # updateAutotoolsGnuConfigScriptsHook which is not enabled in stage2, # so we replicate it with cp. This also reduces bootstrap closure size. installPhase = '' mkdir -p $out cp -r usr/include $out find $out -type f ! -name '*.h' -delete '' # Some builds (e.g. KVM) want a kernel.release. + '' mkdir -p $out/include/config echo "${version}-default" > $out/include/config/kernel.release ''; meta = with lib; { description = "Header files and scripts for Linux kernel"; license = licenses.gpl2; platforms = platforms.linux; }; }; in { inherit makeLinuxHeaders; linuxHeaders = let version = "5.9.8"; in makeLinuxHeaders { inherit version; src = fetchurl { url = "mirror://kernel/linux/kernel/v5.x/linux-${version}.tar.xz"; sha256 = "19l67gzk97higd2cbggipcb0wi21pv0ag0mc4qh6cqk564xp6mkn"; }; patches = [ ./no-relocs.patch # for building x86 kernel headers on non-ELF platforms ]; }; }