Index: libcfa/configure
===================================================================
--- libcfa/configure	(revision 42cd451e139b4d6ef2dc72aebb910104dd7f1fbc)
+++ libcfa/configure	(revision 1a39a5a0bcbeb171fe0e5b89de440ca60f18cc21)
@@ -701,4 +701,5 @@
 CFA_PREFIX
 CFA_NAME
+AM_T
 BUILDLIB_FALSE
 BUILDLIB_TRUE
@@ -3187,4 +3188,7 @@
   BUILDLIB_FALSE=
 fi
+
+
+AM_T='$(T)'
 
 
@@ -17017,4 +17021,5 @@
 
 
+
 for ac_header in linux/io_uring.h
 do :
@@ -19295,4 +19300,55 @@
 
 
+
+fi
+
+
+
+	# check support for various io_uring flags
+
+		ac_fn_c_check_decl "$LINENO" "IOSQE_FIXED_FILE" "ac_cv_have_decl_IOSQE_FIXED_FILE" "#include <linux/io_uring.h>
+"
+if test "x$ac_cv_have_decl_IOSQE_FIXED_FILE" = xyes; then :
+  $as_echo "#define CFA_HAVE_IOSQE_FIXED_FILE 1" >>confdefs.h
+
+fi
+
+
+		ac_fn_c_check_decl "$LINENO" "IOSQE_IO_DRAIN" "ac_cv_have_decl_IOSQE_IO_DRAIN" "#include <linux/io_uring.h>
+"
+if test "x$ac_cv_have_decl_IOSQE_IO_DRAIN" = xyes; then :
+  $as_echo "#define CFA_HAVE_IOSQE_IO_DRAIN 1" >>confdefs.h
+
+fi
+
+
+		ac_fn_c_check_decl "$LINENO" "IOSQE_ASYNC" "ac_cv_have_decl_IOSQE_ASYNC" "#include <linux/io_uring.h>
+"
+if test "x$ac_cv_have_decl_IOSQE_ASYNC" = xyes; then :
+  $as_echo "#define CFA_HAVE_IOSQE_ASYNC 1" >>confdefs.h
+
+fi
+
+
+		ac_fn_c_check_decl "$LINENO" "IOSQE_IO_LINK" "ac_cv_have_decl_IOSQE_IO_LINK" "#include <linux/io_uring.h>
+"
+if test "x$ac_cv_have_decl_IOSQE_IO_LINK" = xyes; then :
+  $as_echo "#define CFA_HAVE_IOSQE_IO_LINK 1" >>confdefs.h
+
+fi
+
+
+		ac_fn_c_check_decl "$LINENO" "IOSQE_IO_HARDLINK" "ac_cv_have_decl_IOSQE_IO_HARDLINK" "#include <linux/io_uring.h>
+"
+if test "x$ac_cv_have_decl_IOSQE_IO_HARDLINK" = xyes; then :
+  $as_echo "#define CFA_HAVE_IOSQE_IO_HARDLINK 1" >>confdefs.h
+
+fi
+
+
+		ac_fn_c_check_decl "$LINENO" "SPLICE_F_FD_IN_FIXED" "ac_cv_have_decl_SPLICE_F_FD_IN_FIXED" "#include <linux/io_uring.h>
+"
+if test "x$ac_cv_have_decl_SPLICE_F_FD_IN_FIXED" = xyes; then :
+  $as_echo "#define CFA_HAVE_SPLICE_F_FD_IN_FIXED 1" >>confdefs.h
 
 fi
@@ -21158,5 +21214,4 @@
 #! $SHELL
 # Generated automatically by $as_me ($PACKAGE) $VERSION
-# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
 # NOTE: Changes made to this file will be lost: look at ltmain.sh.