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Toolchain: Fix QEMU build with latest gcc by disabling -fcf-protection

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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.
This commit is contained in:
Brian Gianforcaro 2022-02-12 07:07:31 -08:00 • committed by Brian Gianforcaro
parent b760a1a4ba
commit d386d3946a
2 changed files with 43 additions and 0 deletions
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6
Toolchain/BuildQemu.sh
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@ -40,6 +40,12 @@ pushd "$DIR/Tarballs"
else
echo "Skipped extracting qemu"
fi
pushd "$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"