nixpkgs/pkgs/os-specific/linux/busybox/default.nix
Jörg Thalheim 8fb7c7fdfa
busybox: fix patchShebangs & build
Our patchShebangs expect coreutils stat instead of busybox stat.
This broke patching the dispatch script. By enabling strict
dependencies and using explicit --host parameter we not only
avoid cross-compiling breackages but also work around this problem.

Signed-off-by: Jörg Thalheim <joerg@thalheim.io>
2021-02-16 21:06:37 +01:00

142 lines
4 KiB
Nix

{ stdenv, lib, buildPackages, fetchurl, fetchFromGitLab
, enableStatic ? stdenv.hostPlatform.isStatic
, 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
'';
# The debian version lacks behind the upstream version and also contains
# a debian-specific suffix. We only fetch the debian repository to get the
# default.script
debianVersion = "1.30.1-6";
debianSource = fetchFromGitLab {
domain = "salsa.debian.org";
owner = "installer-team";
repo = "busybox";
rev = "debian/1%${debianVersion}";
sha256 = "sha256-6r0RXtmqGXtJbvLSD1Ma1xpqR8oXL2bBKaUE/cSENL8=";
};
debianDispatcherScript = "${debianSource}/debian/tree/udhcpc/etc/udhcpc/default.script";
outDispatchPath = "$out/default.script";
in
stdenv.mkDerivation rec {
pname = "busybox";
version = "1.32.1";
# Note to whoever is updating busybox: please verify that:
# nix-build pkgs/stdenv/linux/make-bootstrap-tools.nix -A test
# still builds after the update.
src = fetchurl {
url = "https://busybox.net/downloads/${pname}-${version}.tar.bz2";
sha256 = "1vhd59qmrdyrr1q7rvxmyl96z192mxl089hi87yl0hcp6fyw8mwx";
};
hardeningDisable = [ "format" "pie" ]
++ lib.optionals enableStatic [ "fortify" ];
patches = [
./busybox-in-store.patch
] ++ 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
${lib.optionalString enableStatic ''
CONFIG_STATIC y
''}
# Use the external mount.cifs program.
CONFIG_FEATURE_MOUNT_CIFS n
CONFIG_FEATURE_MOUNT_HELPERS y
# Set paths for console fonts.
CONFIG_DEFAULT_SETFONT_DIR "/etc/kbd"
# Bump from 4KB, much faster I/O
CONFIG_FEATURE_COPYBUF_KB 64
# Set the path for the udhcpc script
CONFIG_UDHCPC_DEFAULT_SCRIPT "${outDispatchPath}"
${extraConfig}
CONFIG_CROSS_COMPILER_PREFIX "${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${musl}/lib")
'';
postInstall = ''
sed -e '
1 a busybox() { '$out'/bin/busybox "$@"; }\
logger() { '$out'/bin/logger "$@"; }\
' ${debianDispatcherScript} > ${outDispatchPath}
chmod 555 ${outDispatchPath}
HOST_PATH=$out/bin patchShebangs --host ${outDispatchPath}
'';
strictDeps = true;
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 lib; {
description = "Tiny versions of common UNIX utilities in a single small executable";
homepage = "https://busybox.net/";
license = licenses.gpl2;
maintainers = with maintainers; [ TethysSvensson ];
platforms = platforms.linux;
priority = 10;
};
}