1# strnlen.m4 serial 13
2dnl Copyright (C) 2002-2003, 2005-2007, 2009-2012 Free Software Foundation,
3dnl Inc.
4dnl This file is free software; the Free Software Foundation
5dnl gives unlimited permission to copy and/or distribute it,
6dnl with or without modifications, as long as this notice is preserved.
7
8AC_DEFUN([gl_FUNC_STRNLEN],
9[
10  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
11
12  dnl Persuade glibc <string.h> to declare strnlen().
13  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
14
15  AC_CHECK_DECLS_ONCE([strnlen])
16  if test $ac_cv_have_decl_strnlen = no; then
17    HAVE_DECL_STRNLEN=0
18  else
19    m4_pushdef([AC_LIBOBJ], [:])
20    dnl Note: AC_FUNC_STRNLEN does AC_LIBOBJ([strnlen]).
21    AC_FUNC_STRNLEN
22    m4_popdef([AC_LIBOBJ])
23    if test $ac_cv_func_strnlen_working = no; then
24      REPLACE_STRNLEN=1
25    fi
26  fi
27])
28
29# Prerequisites of lib/strnlen.c.
30AC_DEFUN([gl_PREREQ_STRNLEN], [:])
31