diff --git a/configure b/configure
index ee7e8520ab..e014615eb9 100755
--- a/configure
+++ b/configure
@@ -6202,6 +6202,7 @@ elif enabled llvm_gcc; then
     check_cflags -mllvm -stack-alignment=16
 elif enabled clang; then
     check_cflags -mllvm -stack-alignment=16
+    check_cflags -mstack-alignment=16
     check_cflags -Qunused-arguments
     check_cflags -Werror=implicit-function-declaration
     check_cflags -Werror=missing-prototypes