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Tsirkin" , Paolo Bonzini , Eric Blake , Thomas Huth , Peter Maydell Date: Mon, 8 Jan 2018 14:29:02 -0300 Message-Id: <20180108172904.8772-11-f4bug@amsat.org> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180108172904.8772-1-f4bug@amsat.org> References: <20180108172904.8772-1-f4bug@amsat.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400d:c09::244 Subject: [Qemu-devel] [PATCH 10/12] configure: disable unaligned access warning on x86 arch X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- configure | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/configure b/configure index 56f9716609..28cd073941 100755 --- a/configure +++ b/configure @@ -276,6 +276,7 @@ cc_i386=3Di386-pc-linux-gnu-gcc libs_qga=3D"" debug_info=3D"yes" stack_protector=3D"" +host_supports_unaligned_access=3D"no" =20 if test -e "$source_path/.git" then @@ -692,6 +693,13 @@ if test -z "$ARCH"; then ARCH=3D"$cpu" fi =20 +# ARCH specific +case "$ARCH" in + i386|x86_64) + host_supports_unaligned_access=3D"yes" + ;; +esac + # OS specific =20 # host *BSD for user mode @@ -4993,6 +5001,15 @@ if test "$fortify_source" !=3D "no"; then fi fi =20 +################################################# +# check if host supports unaligned access + +if test "$host_supports_unaligned_access" !=3D "no"; then + if compile_prog "-Werror -Wno-address-of-packed-member" "" ; then + QEMU_CFLAGS=3D"-Wno-address-of-packed-member $QEMU_CFLAGS" + fi +fi + ########################################## # check if struct fsxattr is available via linux/fs.h =20 --=20 2.15.1