1 files changed, 83 insertions, 0 deletions
diff --git a/infra/libkookie/nixpkgs/pkgs/os-specific/linux/kernel-headers/default.nix b/infra/libkookie/nixpkgs/pkgs/os-specific/linux/kernel-headers/default.nix
new file mode 100644
index 000000000000..59656f54db28
--- /dev/null
+++ b/infra/libkookie/nixpkgs/pkgs/os-specific/linux/kernel-headers/default.nix
@@ -0,0 +1,83 @@
+{ 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" > $out/include/config/kernel.release
+    '';
+
+    meta = with lib; {
+      description = "Header files and scripts for Linux kernel";
+      license = licenses.gpl2;
+      platforms = platforms.linux;
+    };
+  };
+in {
+  inherit makeLinuxHeaders;
+
+  linuxHeaders = let version = "5.5"; in
+    makeLinuxHeaders {
+      inherit version;
+      src = fetchurl {
+        url = "mirror://kernel/linux/kernel/v5.x/linux-${version}.tar.xz";
+        sha256 = "0c131fi6s7vgvka1c0597vnvcmwn1pp968rci5kq64iwj3pd9yx6";
+      };
+      patches = [
+         ./no-relocs.patch # for building x86 kernel headers on non-ELF platforms
+      ];
+    };
+}