configure: Don't use __int128_t for clang versions before 3.2

Those versions don't fully support __int128_t.

Cc: qemu-stable@nongnu.org
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit a00f66ab9b3021e781695a73c579b6292501ab37)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/configure b/configure
index 3cbcea1448..c0882dc8d1 100755
--- a/configure
+++ b/configure
@@ -3520,6 +3520,11 @@ fi
 
 int128=no
 cat > $TMPC << EOF
+#if defined(__clang_major__) && defined(__clang_minor__)
+# if ((__clang_major__ < 3) || (__clang_major__ == 3) && (__clang_minor__ < 2))
+#  error __int128_t does not work in CLANG before 3.2
+# endif
+#endif
 __int128_t a;
 __uint128_t b;
 int main (void) {