ladybird/Toolchain/BuildQemu.sh
Brian Gianforcaro d386d3946a Toolchain: Fix QEMU build with latest gcc by disabling -fcf-protection
I noticed after upgrading my machine that the QEMU is no longer building
due to GCC enabling `-fcf-protection` by default, even for targets that
don't support it.

The included patch came from the QEMU development list, but hasn't be
included in any patch releases at the time of writing.
https://lore.kernel.org/all/20220208211937.79580-1-vineetg@rivosinc.com/

Until QEMU patches, lets fix it on our end by patching before we build.
2022-02-13 17:11:53 +00:00

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#!/usr/bin/env bash
set -e
# This file will need to be run in bash, for now.
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
echo "$DIR"
PREFIX="$DIR/Local/qemu"
BUILD=$(realpath "$DIR/../Build")
SYSROOT="$BUILD/Root"
QEMU_VERSION="qemu-6.2.0"
QEMU_MD5SUM="a077669ce58b6ee07ec355e54aad25be"
echo PREFIX is "$PREFIX"
echo SYSROOT is "$SYSROOT"
mkdir -p "$DIR/Tarballs"
pushd "$DIR/Tarballs"
if [ ! -e "$QEMU_VERSION.tar.xz" ]; then
curl -O "https://download.qemu.org/$QEMU_VERSION.tar.xz"
else
echo "Skipped downloading $QEMU_VERSION"
fi
md5="$(md5sum $QEMU_VERSION.tar.xz | cut -f1 -d' ')"
echo "qemu md5='$md5'"
if [ "$md5" != "$QEMU_MD5SUM" ] ; then
echo "qemu md5 sum mismatching, please run script again."
rm -f $QEMU_VERSION.tar.xz
exit 1
fi
if [ ! -d "$QEMU_VERSION" ]; then
echo "Extracting qemu..."
tar -xf "$QEMU_VERSION.tar.xz"
else
echo "Skipped extracting qemu"
fi
pushd "$QEMU_VERSION"
patch -p1 < "$DIR/Patches/qemu-cf-protection-none.patch" > /dev/null
md5sum "$DIR/Patches/qemu-cf-protection-none.patch" > .patch.applied
popd
popd
mkdir -p "$PREFIX"
mkdir -p "$DIR/Build/qemu"
if [ -z "$MAKEJOBS" ]; then
MAKEJOBS=$(nproc)
fi
if [[ $(uname) == "Darwin" ]]
then
UI_LIB=cocoa
else
UI_LIB=gtk
fi
echo Using $UI_LIB based UI
pushd "$DIR/Build/qemu"
"$DIR"/Tarballs/$QEMU_VERSION/configure --prefix="$PREFIX" \
--target-list=aarch64-softmmu,i386-softmmu,x86_64-softmmu \
--enable-$UI_LIB || exit 1
make -j "$MAKEJOBS" || exit 1
make install || exit 1
popd