--- configure.ac.orig	2025-01-26 11:45:07 UTC
+++ configure.ac
@@ -39,7 +39,7 @@ AS_IF([test "x$enable_sse2" != "xno"], [
    if test "$m4ri_wrapword" = "yes"; then
       AC_MSG_ERROR([SSE2 cannot be supported when wrapping word in a C++ class.])
    fi
-   AX_EXT()
+#   AX_EXT()
 ])
 if test x"$ax_cv_have_sse2_ext" = x"yes"; then
   M4RI_HAVE_SSE2=1