compile-qemu-for-decoder/compile-qemu-for-decoder.sh

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#!/bin/bash
# SPDX-License-Identifier: LGPL-3.0-or-later
# See Notices.txt for copyright information
set -e
function download_if_needed() {
local dest="$1" hash="$2" url="$3"
if [[ ! -f "$1" ]]; then
wget -O "$dest" "$url"
fi
sha256sum -c <<<"$hash *$dest"
}
function build-qemu() (
[[ -x "$QEMU_SOURCE/configure" ]] || tar -xJf "downloads/$QEMU_SOURCE.tar.xz"
rm -rf "$QEMU_BUILD"
mkdir -p "$QEMU_BUILD"
cd "$QEMU_BUILD"
export CC="clang-20 --target=powerpc64le-linux-gnu"
export CXX="clang++-20 --target=powerpc64le-linux-gnu"
export LD="clang++-20 --target=powerpc64le-linux-gnu"
export AR="llvm-ar-20"
"../$QEMU_SOURCE/configure" \
--target-list=ppc64-softmmu \
--enable-lto \
--enable-tcg-interpreter \
--without-default-features \
--cross-prefix=powerpc64le-linux-gnu-
target="$(ninja -t query qemu-system-ppc64)"
mapfile -t target_lines <<<"$target"
# add missed libs
link_inputs=(libpage-vary-common.a libqemuutil.a)
# add the rest of the libs and object files
for l in "${target_lines[@]}"; do
if [[ "$l" =~ ^' '([a-z].*)$ ]]; then
link_inputs+=("${BASH_REMATCH[1]}")
elif [[ "$l" == " outputs:" ]]; then
break
fi
done
make -j"$(nproc)" qemu-system-ppc64
echo "linking bitcode"
llvm-link-20 --only-needed --ignore-non-bitcode -o ../qemu-system-ppc64.bc "${link_inputs[@]}"
echo "disassembling bitcode"
llvm-dis-20 -o ../qemu-system-ppc64.ll ../qemu-system-ppc64.bc
)
mkdir -p downloads
QEMU_SOURCE=qemu-10.2.2
QEMU_SOURCE_HASH=784b296ff29c1417aa72323abcb2d2ea9ab9771724f577dcd785c3b04f21e176
QEMU_BUILD="$QEMU_SOURCE-build"
download_if_needed "downloads/$QEMU_SOURCE.tar.xz" "$QEMU_SOURCE_HASH" \
"https://download.qemu.org/$QEMU_SOURCE.tar.xz"
build-qemu