1# strnlen.m4 serial 5
2dnl Copyright (C) 2002-2003, 2005 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_FUNC_STRNLEN],
8[
9  AC_LIBSOURCES([strnlen.c, strnlen.h])
10
11  dnl Persuade glibc <string.h> to declare strnlen().
12  AC_REQUIRE([AC_GNU_SOURCE])
13
14  AC_FUNC_STRNLEN
15  if test $ac_cv_func_strnlen_working = no; then
16    # This is necessary because automake-1.6.1 doens't understand
17    # that the above use of AC_FUNC_STRNLEN means we may have to use
18    # lib/strnlen.c.
19    #AC_LIBOBJ(strnlen)
20    AC_DEFINE(strnlen, rpl_strnlen,
21      [Define to rpl_strnlen if the replacement function should be used.])
22    gl_PREREQ_STRNLEN
23  fi
24])
25
26# Prerequisites of lib/strnlen.c.
27AC_DEFUN([gl_PREREQ_STRNLEN], [
28  AC_CHECK_DECLS_ONCE(strnlen)
29])
30