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{ lib, stdenv, fetchurl, buildPackages, linuxHeaders, perl, nixosTests }:
let
commonMakeFlags = [
"prefix=$(out)"
"SHLIBDIR=$(out)/lib"
];
in
stdenv.mkDerivation rec {
pname = "klibc";
version = "2.0.13";
src = fetchurl {
url = "mirror://kernel/linux/libs/klibc/2.0/klibc-${version}.tar.xz";
hash = "sha256-1nOilPdC1ZNoIi/1w4Ri2BCYxVBjeZ3m+4p7o9SvBDY=";
};
patches = [ ./no-reinstall-kernel-headers.patch ];
depsBuildBuild = [ buildPackages.stdenv.cc ];
nativeBuildInputs = [ perl ];
strictDeps = true;
hardeningDisable = [ "format" "stackprotector" ];
makeFlags = commonMakeFlags ++ [
"KLIBCARCH=${if stdenv.hostPlatform.isRiscV64 then "riscv64" else stdenv.hostPlatform.linuxArch}"
"KLIBCKERNELSRC=${linuxHeaders}"
] # TODO(@Ericson2314): We now can get the ABI from
# `stdenv.hostPlatform.parsed.abi`, is this still a good idea?
++ lib.optional (stdenv.hostPlatform.linuxArch == "arm") "CONFIG_AEABI=y"
++ lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) "CROSS_COMPILE=${stdenv.cc.targetPrefix}";
# 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/
for file in ${linuxHeaders}/include/*; do
ln -sv $file $out/lib/klibc/include
done
'';
passthru.tests = {
# uses klibc's ipconfig
inherit (nixosTests) initrd-network-ssh;
};
meta = {
description = "Minimalistic libc subset for initramfs usage";
homepage = "https://kernel.org/pub/linux/libs/klibc/";
maintainers = with lib.maintainers; [ fpletz ];
license = lib.licenses.bsd3;
platforms = lib.platforms.linux;
};
}
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