nixpkgs/pkgs/os-specific/linux/klibc/default.nix

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{ stdenv, fetchurl, kernelHeaders, kernel, perl }:
let
version = "2.0.3";
commonMakeFlags = [
"prefix=$(out)"
"SHLIBDIR=$(out)/lib"
];
in
stdenv.mkDerivation {
name = "klibc-${version}-${kernel.version}";
src = fetchurl {
url = "mirror://kernel/linux/libs/klibc/2.0/klibc-${version}.tar.xz";
sha256 = "02035f2b230020de569d40605485121e0fe481ed33a93bdb8bf8c6ee2695fffa";
};
patches = [ ./no-reinstall-kernel-headers.patch ];
nativeBuildInputs = [ perl ];
makeFlags = commonMakeFlags ++ [
"KLIBCARCH=${stdenv.platform.kernelArch}"
"KLIBCKERNELSRC=${kernelHeaders}"
] ++ stdenv.lib.optional (stdenv.platform.kernelArch == "arm") "CONFIG_AEABI=y";
crossAttrs = {
makeFlags = commonMakeFlags ++ [
"KLIBCARCH=${stdenv.cross.platform.kernelArch}"
"KLIBCKERNELSRC=${kernelHeaders.crossDrv}"
"CROSS_COMPILE=${stdenv.cross.config}-"
] ++ stdenv.lib.optional (stdenv.cross.platform.kernelArch == "arm") "CONFIG_AEABI=y";
};
# Install static binaries as well.
postInstall = ''
dir=$out/lib/klibc/bin.static
mkdir $dir
cp $(find $(find . -name static) -type f ! -name "*.g" -a ! -name ".*") $dir/
cp usr/dash/sh $dir/
for file in ${kernelHeaders}/include/*; do
ln -sv $file $out/lib/klibc/include
done
'';
}