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{ stdenvNoCC, lib, buildPackages, fetchurl, perl, elf-header }:
rec {
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" > $out/include/config/kernel.release
'';
meta = with lib; {
description = "Header files and scripts for Linux kernel";
license = licenses.gpl2;
platforms = platforms.linux;
};
};
linuxHeadersPatches = [
./no-relocs.patch # for building x86 kernel headers on non-ELF platforms
];
linuxHeaders = let version = "5.5"; in
makeLinuxHeaders {
inherit version;
src = fetchurl {
url = "mirror://kernel/linux/kernel/v5.x/linux-${version}.tar.xz";
sha256 = "0c131fi6s7vgvka1c0597vnvcmwn1pp968rci5kq64iwj3pd9yx6";
};
patches = linuxHeadersPatches;
};
}
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