Index: libcfa/configure
===================================================================
--- libcfa/configure	(revision 27273f99d1999079a576a73c4f6c18b5cbf02170)
+++ libcfa/configure	(revision 0100882edf7e7d1ea48cf5b3e761d5e0fd505979)
@@ -16950,9 +16950,15 @@
 
 
-ac_fn_c_check_header_mongrel "$LINENO" "linux/io_uring.h" "ac_cv_header_linux_io_uring_h" "$ac_includes_default"
+for ac_header in linux/io_uring.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "linux/io_uring.h" "ac_cv_header_linux_io_uring_h" "$ac_includes_default"
 if test "x$ac_cv_header_linux_io_uring_h" = xyes; then :
-
-fi
-
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LINUX_IO_URING_H 1
+_ACEOF
+
+fi
+
+done