#!/bin/bash -e

# Based on avi's scripts/make-release from kvm-userspace.git

usage()

{

    echo "usage: make-release name kernel-dir kernel-commit user-dir user-commit"

    exit 1

}

[ $# -eq 5 ] || usage

name="$1"

kdir="$2"

kcommit="$3"

udir="$4"

ucommit="$5"

archs=(x86 ia64)

release_dir=$(mktemp -d)

tarball="$(pwd)/$name.tar.gz"

cd "${release_dir}"

(cd "$udir";  git archive --format=tar --prefix="$name"/ "$ucommit") | tar x

cd "$name"

cat <<EOF > SOURCES

kernel:    $(cd "$kdir"; git rev-parse "$kcommit")

userspace: $(cd "$udir"; git rev-parse "$ucommit")

EOF

paths=(drivers/kvm virt/kvm)

files=(kvm.h kvm_host.h kvm_para.h kvm_types.h kvm_x86_emulate.h virtext.h svm.h vmx.h)

for file in "${files[@]}"; do

    for arch in "${archs[@]}"; do

	for variant in include/asm-"$arch" arch/"$arch"/include/asm; do

	    paths+=("$variant"/"$file")

	done

    done

    paths+=(include/linux/"$file")

done

for arch in "${archs[@]}"; do

    paths+=(arch/"$arch"/kvm)

done

(cd "$kdir"; git archive --format=tar --prefix=linux/ "$kcommit" "${paths[@]}") | tar x

touch kernel/config.kbuild

echo ARCH=ia64 > config.mak

make -C kernel sync LINUX=../linux version="$name" >/dev/null

echo ARCH=x86_64 > config.mak

make -C kernel sync LINUX=../linux version="$name" >/dev/null

rm -rf config.mak linux kernel/config.kbuild

#rm -rf kernel/include/asm kernel/include-compat/asm

sed -i "s/kvm-devel/$name/" qemu/configure

cd ..

tar czf "$tarball" "$name"

cd $(dirname "$tarball")

md5sum $(basename "$tarball")

rm -rf "${release_dir}"