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+# serial 3
+# See if we need to provide renameat replacement.
+
+dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Written by Eric Blake.
+
+AC_DEFUN([gl_FUNC_RENAMEAT],
+[
+ AC_REQUIRE([gl_FUNC_OPENAT])
+ AC_REQUIRE([gl_FUNC_RENAME])
+ AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+ AC_CHECK_HEADERS([linux/fs.h])
+ AC_CHECK_FUNCS_ONCE([renameat renameat2])
+ if test $ac_cv_func_renameat = no; then
+ HAVE_RENAMEAT=0
+ elif test $REPLACE_RENAME = 1; then
+ dnl Solaris 9 and 10 have the same bugs in renameat as in rename.
+ REPLACE_RENAMEAT=1
+ fi
+])