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{ stdenv, runCommand, nettools, perl, kmod }:
{ version, modDirVersion ? version, src, patches ? [], config }:
with stdenv.lib;
let
# Function to parse the config file to get the features supported
readFeatures = config:
let
# !!! Original causes recursion too deep, need to import from derivation
# linesWithComments = splitString "\n" (builtins.readFile config);
lines = import "${runCommand "lines.nix" {} ''
echo "[" >> $out
while read line; do
if [ -n "$line" ] && [ "#" != ''${line:0:1} ]; then
echo "'''" >> $out
echo $(echo $line | sed "s/'''/''''/g")"'''" >> $out
fi
done < ${config}
echo "]" >> $out
''}";
nvpairs = map (s: let split = splitString "=" s; fst = head split; in {
name = substring (stringLength "CONFIG_") (stringLength fst) fst;
value = head (tail split);
}) lines;
configAttrs = listToAttrs nvpairs;
getValue = option:
if hasAttr option configAttrs then getAttr option configAttrs else null;
isYes = option: (getValue option) == "y";
in
{
modular = isYes "MODULES";
};
features = readFeatures config;
commonMakeFlags = [
"O=../build"
];
in
stdenv.mkDerivation ({
name = "linux-${version}";
enableParallelBuilding = true;
passthru = {
inherit version modDirVersion features;
};
inherit patches src;
prePatch = ''
for mf in $(find -name Makefile -o -name Makefile.include); do
echo "stripping FHS paths in \`$mf'..."
sed -i "$mf" -e 's|/usr/bin/||g ; s|/bin/||g'
done
sed -i -e 's|/sbin/depmod|${kmod}/sbin/depmod|' Makefile
'';
configurePhase = ''
runHook preConfigure
mkdir ../build
make $makeFlags "''${makeFlagsArray[@]}" mrproper
ln -sv ${config} ../build/.config
make $makeFlags "''${makeFlagsArray[@]}" oldconfig
rm ../build/.config.old
runHook postConfigure
'';
INSTALL_PATH = "$(out)";
buildNativeInputs = [ perl nettools ];
installPhase = ''
runHook preInstall
mkdir $out
mv -v ../build/System.map $out
# !!! Assumes x86
mv -v ../build/arch/x86/boot/bzImage $out
mv -v ../build/vmlinux $out
runHook postInstall
'';
makeFlags = commonMakeFlags;
} // optionalAttrs features.modular {
makeFlags = commonMakeFlags ++ [
"MODLIB=\"$(out)/lib/modules/${modDirVersion}\""
];
INSTALL_MOD_STRIP = "1";
postInstall = ''
make modules_install $makeFlags "''${makeFlagsArray[@]}" \
$installFlags "''${installFlagsArray[@]}"
rm -f $out/lib/modules/${modDirVersion}/{build,source}
cd ..
mv $sourceRoot $out/lib/modules/${modDirVersion}/source
mv build $out/lib/modules/${modDirVersion}/build
'';
})
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