--- ./configure.ac.old	2023-04-26 00:42:37.840034913 +0200
+++ ./configure.ac	2023-04-26 00:43:13.828730731 +0200
@@ -577,6 +577,7 @@
     {
       __m128i a, b;
       a = _mm_clmulepi64_si128 (a, b, 0x00);
+      a = _mm_shuffle_epi8 (a, b);
       return 1;
     }
   ]])