Index: libcfa/prelude/defines.hfa.in
===================================================================
--- libcfa/prelude/defines.hfa.in	(revision 6bd2cfb14fd5626001c1d2b3b915b6ea8cc6da54)
+++ libcfa/prelude/defines.hfa.in	(revision 9705ffe96ab9ff98f4aaff4e51429c62e3f827c2)
@@ -137,4 +137,8 @@
 
 /* Defined if io_uring support is present when compiling libcfathread and
+   supports the flag IORING_SETUP_ATTACH_WQ. */
+#undef CFA_HAVE_IORING_SETUP_ATTACH_WQ
+
+/* Defined if io_uring support is present when compiling libcfathread and
    supports the flag ASYNC. */
 #undef CFA_HAVE_IOSQE_ASYNC