1 files changed, 4 insertions, 1 deletions
diff --git a/libglnx.m4 b/libglnx.m4
index 770f117..d5bcc2f 100644
--- a/libglnx.m4
+++ b/libglnx.m4
@@ -1,6 +1,9 @@
 AC_DEFUN([LIBGLNX_CONFIGURE],
 [
-AC_CHECK_DECLS([renameat2, memfd_create],
+AC_CHECK_DECLS([
+        renameat2,
+        memfd_create,
+        copy_file_range],
         [], [], [[
 #include <sys/types.h>
 #include <unistd.h>