# once.m4 # serial 1 dnl Copyright (C) 2024 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. dnl From Bruno Haible. AC_DEFUN([gl_ONCE], [ AC_REQUIRE([gl_THREADLIB]) ])