patch/strnlen.m4

   1 # strnlen.m4 serial 10
   2 dnl Copyright (C) 2002-2003, 2005-2007, 2009 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 AC_DEFUN([gl_FUNC_STRNLEN],
   8 [
   9   dnl Persuade glibc <string.h> to declare strnlen().
  10   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
  11
  12   dnl AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
  13   AC_CHECK_DECLS_ONCE([strnlen])
  14   if test $ac_cv_have_decl_strnlen = no; then
  15     HAVE_DECL_STRNLEN=0
  16   fi
  17
  18   AC_FUNC_STRNLEN
  19   if test $ac_cv_func_strnlen_working = no; then
  20     # This is necessary because automake-1.6.1 doesn't understand
  21     # that the above use of AC_FUNC_STRNLEN means we may have to use
  22     # lib/strnlen.c.
  23     AC_LIBOBJ([strnlen])
  24     AC_DEFINE([strnlen], [rpl_strnlen],
  25       [Define to rpl_strnlen if the replacement function should be used.])
  26     gl_PREREQ_STRNLEN
  27   fi
  28 ])
  29
  30 # Prerequisites of lib/strnlen.c.
  31 AC_DEFUN([gl_PREREQ_STRNLEN], [:])