# strnlen.m4 serial 13

dnl Copyright (C) 2002-2003, 2005-2007, 2009-2014 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

    m4_pushdef([AC_LIBOBJ], [:])

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

    AC_FUNC_STRNLEN

    m4_popdef([AC_LIBOBJ])

    if test $ac_cv_func_strnlen_working = no; then

      REPLACE_STRNLEN=1

    fi

  fi

])

# Prerequisites of lib/strnlen.c.

AC_DEFUN([gl_PREREQ_STRNLEN], [:])