clang

unvendor

06/using-nix/2a6-linux-headers.nix

@@ -0,0 +1,39 @@
+{ fetchurl, mkDerivationStage2, stage1, static-gnumake, static-binutils, gnugcc10 }:
+
+let
+  source-tarball-linux = fetchurl {
+    # local = /downloads/linux-6.4.12.tar.xz;
+    url = "https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-6.4.12.tar.xz";
+    sha256 = "cca91be956fe081f8f6da72034cded96fe35a50be4bfb7e103e354aa2159a674";
+  };
+in
+  mkDerivationStage2 {
+    name = "bootstrap-2a6-linux-headers";
+    buildInputPaths = [
+      "${stage1.protobusybox}/bin"
+      "${static-gnumake}/bin"
+      "${static-binutils}/bin"
+      "${gnugcc10}/bin"
+    ];
+    script = ''
+      # unpack:
+        mkdir build-dir; cd build-dir
+        unpack ${source-tarball-linux} \
+          linux-6.4.12/Makefile \
+          linux-6.4.12/arch/x86 \
+          linux-6.4.12/include \
+          linux-6.4.12/scripts \
+          linux-6.4.12/tools
+      # build:
+        make -j $NPROC \
+                CONFIG_SHELL=${stage1.protobusybox}/bin/ash \
+                CC=gcc HOSTCC=gcc ARCH=x86_64 \
+                headers
+      # install:
+        find usr/include -name '.*' | xargs rm
+        mkdir -p $out
+        cp -rv usr/include $out/
+      # check for build path leaks:
+        ( ! grep -rF $(pwd) $out )
+    '';
+  }