--- freeradius-server-3.2.10.orig/m4/fr_tls.m4	2026-10-18 06:51:21.858900741 +0200
+++ freeradius-server-3.2.10/m4/fr_tls.m4	2026-10-18 06:51:21.898724093 +0200
@@ -16,7 +16,14 @@ dnl #
           return val;
         }
       ]])
-    ],[have_tls=yes],[have_tls=no],[have_tls=no])
+    ],[have_tls=yes],[have_tls=no],
+    [AC_LINK_IFELSE([AC_LANG_SOURCE([[
+        static __thread int val;
+        int main(int argc, char **argv) {
+          val = 0;
+          return val;
+        }
+      ]])],[have_tls=yes],[have_tls=no])])
   AC_MSG_RESULT($have_tls)
   if test "x$have_tls" = "xyes"; then
     AC_DEFINE([TLS_STORAGE_CLASS],[__thread],[Define if the compiler supports a thread local storage class])
--- freeradius-server-3.2.10.orig/configure	2026-10-18 06:51:21.955562746 +0200
+++ freeradius-server-3.2.10/configure	2026-10-18 06:51:22.028330049 +0200
@@ -12625,7 +12625,22 @@ fi
 printf %s "checking for __thread support in compiler... " >&6; }
   if test "$cross_compiling" = yes
 then :
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+        static __thread int val;
+        int main(int argc, char **argv) {
+          val = 0;
+          return val;
+        }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  have_tls=yes
+else $as_nop
   have_tls=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
 else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */