-# vasnprintf.m4 serial 28
+# vasnprintf.m4 serial 29
dnl Copyright (C) 2002-2004, 2006-2009 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
])
# Prerequisites of lib/vasnprintf.c.
-AC_DEFUN([gl_PREREQ_VASNPRINTF],
+AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
[
AC_REQUIRE([AC_FUNC_ALLOCA])
AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
# Extra prerequisites of lib/vasnprintf.c for supporting 'long double'
# arguments.
-AC_DEFUN([gl_PREREQ_VASNPRINTF_LONG_DOUBLE],
+AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF_LONG_DOUBLE],
[
AC_REQUIRE([gl_PRINTF_LONG_DOUBLE])
case "$gl_cv_func_printf_long_double" in