nixpkgs/pkgs/os-specific/linux/kernel/builder.sh

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source $stdenv/setup
makeFlags="ARCH=$arch SHELL=/bin/sh"
configurePhase() {
if test -n "$preConfigure"; then
eval "$preConfigure";
fi
export INSTALL_PATH=$out
export INSTALL_MOD_PATH=$out
# Set our own localversion, if specified.
rm -f localversion*
if test -n "$localVersion"; then
echo "$localVersion" > localversion-nix
fi
# Patch kconfig to print "###" after every question so that
# generate-config.pl can answer them.
sed -e '/fflush(stdout);/i\printf("###");' -i scripts/kconfig/conf.c
# Create the config file.
echo "generating kernel configuration..."
echo "$kernelConfig" > kernel-config
DEBUG=1 ARCH=$arch KERNEL_CONFIG=kernel-config perl -w $generateConfig
}
installPhase() {
ensureDir $out
# New kernel versions have a combined tree for i386 and x86_64.
archDir=$arch
if test -e arch/x86 -a \( "$arch" = i386 -o "$arch" = x86_64 \); then
archDir=x86
fi
# Copy the bzImage and System.map.
cp System.map $out
if test "$arch" = um; then
ensureDir $out/bin
cp linux $out/bin
else
cp arch/$archDir/boot/bzImage $out/vmlinuz
fi
# Install the modules in $out/lib/modules with matching paths
# in modules.dep (i.e., refererring to $out/lib/modules, not
# /lib/modules). The depmod_opts= is to prevent the kernel
# from passing `-b PATH' to depmod.
export MODULE_DIR=$out/lib/modules/
substituteInPlace Makefile --replace '-b $(INSTALL_MOD_PATH)' ''
make modules_install \
DEPMOD=$module_init_tools/sbin/depmod depmod_opts= \
$makeFlags "${makeFlagsArray[@]}" \
$installFlags "${installFlagsArray[@]}"
# Strip the kernel modules.
echo "Stripping kernel modules..."
find $out -name "*.ko" -print0 | xargs -0 strip -S
# move this to install later on
# largely copied from early FC3 kernel spec files
version=$(cd $out/lib/modules && ls -d *)
# remove symlinks and create directories
rm -f $out/lib/modules/$version/build
rm -f $out/lib/modules/$version/source
mkdir $out/lib/modules/$version/build
# copy config
cp .config $out/lib/modules/$version/build/.config
ln -s $out/lib/modules/$version/build/.config $out/config
if test "$arch" != um; then
# copy all Makefiles and Kconfig files
ln -s $out/lib/modules/$version/build $out/lib/modules/$version/source
cp --parents `find -type f -name Makefile -o -name "Kconfig*"` $out/lib/modules/$version/build
cp Module.symvers $out/lib/modules/$version/build
# weed out unneeded stuff
rm -rf $out/lib/modules/$version/build/Documentation
rm -rf $out/lib/modules/$version/build/scripts
rm -rf $out/lib/modules/$version/build/include
# copy architecture dependent files
cp -a arch/$archDir/scripts $out/lib/modules/$version/build/ || true
cp -a arch/$archDir/*lds $out/lib/modules/$version/build/ || true
cp -a arch/$archDir/Makefile*.cpu $out/lib/modules/$version/build/arch/$archDir/ || true
cp -a --parents arch/$archDir/kernel/asm-offsets.s $out/lib/modules/$version/build/arch/$archDir/kernel/ || true
# copy scripts
rm -f scripts/*.o
rm -f scripts/*/*.o
cp -a scripts $out/lib/modules/$version/build
# copy include files
includeDir=$out/lib/modules/$version/build/include
mkdir -p $includeDir
(cd include && cp -a * $includeDir)
(cd arch/$archDir/include && cp -a * $includeDir || true)
(cd arch/$archDir/include && cp -a asm/* $includeDir/asm/ || true)
(cd arch/$archDir/include/asm/mach-generic && cp -a * $includeDir/ || true)
fi
}
genericBuild