# strnlen.m4 serial 12

dnl Copyright (C) 2002-2003, 2005-2007, 2009-2010 Free Software Foundation,

dnl 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.

AC_DEFUN([gl_FUNC_STRNLEN],

[

AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])

dnl Persuade glibc <string.h> to declare strnlen().

AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

AC_CHECK_DECLS_ONCE([strnlen])

if test $ac_cv_have_decl_strnlen = no; then

HAVE_DECL_STRNLEN=0

else

AC_FUNC_STRNLEN

dnl Note: AC_FUNC_STRNLEN does AC_LIBOBJ([strnlen]).

if test $ac_cv_func_strnlen_working = no; then

REPLACE_STRNLEN=1

fi

fi

if test $HAVE_DECL_STRNLEN = 0 || test $REPLACE_STRNLEN = 1; then

AC_LIBOBJ([strnlen])

gl_PREREQ_STRNLEN

fi

])

# Prerequisites of lib/strnlen.c.

AC_DEFUN([gl_PREREQ_STRNLEN], [:])