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{ stdenv, lib, buildPackages, fetchurl
, enableStatic ? false
, enableMinimal ? false
# Allow forcing musl without switching stdenv itself, e.g. for our bootstrapping:
# nix build -f pkgs/top-level/release.nix stdenvBootstrapTools.x86_64-linux.dist
, useMusl ? stdenv.hostPlatform.libc == "musl", musl
, extraConfig ? ""
}:
assert stdenv.hostPlatform.libc == "musl" -> useMusl;
let
configParser = ''
function parseconfig {
while read LINE; do
NAME=`echo "$LINE" | cut -d \ -f 1`
OPTION=`echo "$LINE" | cut -d \ -f 2`
if ! [[ "$NAME" =~ ^CONFIG_ ]]; then continue; fi
echo "parseconfig: removing $NAME"
sed -i /$NAME'\(=\| \)'/d .config
echo "parseconfig: setting $NAME=$OPTION"
echo "$NAME=$OPTION" >> .config
done
}
'';
libcConfig = lib.optionalString useMusl ''
CONFIG_FEATURE_UTMP n
CONFIG_FEATURE_WTMP n
'';
in
stdenv.mkDerivation rec {
name = "busybox-1.31.1";
# Note to whoever is updating busybox: please verify that:
# nix-build pkgs/stdenv/linux/make-bootstrap-tools.nix -A test
# still builds after the update.
src = fetchurl {
url = "https://busybox.net/downloads/${name}.tar.bz2";
sha256 = "1659aabzp8w4hayr4z8kcpbk2z1q2wqhw7i1yb0l72b45ykl1yfh";
};
hardeningDisable = [ "format" "pie" ]
++ lib.optionals enableStatic [ "fortify" ];
patches = [
./busybox-in-store.patch
] ++ stdenv.lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) ./clang-cross.patch;
postPatch = "patchShebangs .";
configurePhase = ''
export KCONFIG_NOTIMESTAMP=1
make ${if enableMinimal then "allnoconfig" else "defconfig"}
${configParser}
cat << EOF | parseconfig
CONFIG_PREFIX "$out"
CONFIG_INSTALL_NO_USR y
CONFIG_LFS y
${lib.optionalString enableStatic ''
CONFIG_STATIC y
''}
# Use the external mount.cifs program.
CONFIG_FEATURE_MOUNT_CIFS n
CONFIG_FEATURE_MOUNT_HELPERS y
# Set paths for console fonts.
CONFIG_DEFAULT_SETFONT_DIR "/etc/kbd"
# Bump from 4KB, much faster I/O
CONFIG_FEATURE_COPYBUF_KB 64
${extraConfig}
CONFIG_CROSS_COMPILER_PREFIX "${stdenv.cc.targetPrefix}"
${libcConfig}
EOF
make oldconfig
runHook postConfigure
'';
postConfigure = lib.optionalString (useMusl && stdenv.hostPlatform.libc != "musl") ''
makeFlagsArray+=("CC=${stdenv.cc.targetPrefix}cc -isystem ${musl.dev}/include -B${musl}/lib -L${musl}/lib")
'';
depsBuildBuild = [ buildPackages.stdenv.cc ];
buildInputs = lib.optionals (enableStatic && !useMusl && stdenv.cc.libc ? static) [ stdenv.cc.libc stdenv.cc.libc.static ];
enableParallelBuilding = true;
doCheck = false; # tries to access the net
meta = with stdenv.lib; {
description = "Tiny versions of common UNIX utilities in a single small executable";
homepage = https://busybox.net/;
license = licenses.gpl2;
maintainers = with maintainers; [ ];
platforms = platforms.linux;
priority = 10;
};
}
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