AC_CHECK_FUNC(renameat, AC_DEFINE([_ATFILE_SOURCE], 1, AT file source))
AC_CHECK_MEMBERS(struct tm.tm_gmtoff,,, [#include <time.h>])
AC_CACHE_SAVE
AC_CHECK_FUNC(renameat, AC_DEFINE([_ATFILE_SOURCE], 1, AT file source))
AC_CHECK_MEMBERS(struct tm.tm_gmtoff,,, [#include <time.h>])
AC_CACHE_SAVE