view m4/d-type.m4 @ 17364:7524d97ae56f

stdalign: port to stricter ISO C11 ISO C11 says that _Alignof's operand must be a parenthesized type. Problem reported by Eli Zaretskii in <http://lists.gnu.org/archive/html/emacs-devel/2013-03/msg00960.html>. * doc/posix-headers/stdalign.texi (stdalign.h): Document this. * m4/stdalign.m4 (gl_STDALIGN_H): Don't use _Alignof (expr).
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 29 Mar 2013 19:47:13 -0700
parents e542fd46ad6f
children 344018b6e5d7
line wrap: on
line source

# serial 11

dnl From Jim Meyering.
dnl
dnl Check whether struct dirent has a member named d_type.
dnl

# Copyright (C) 1997, 1999-2004, 2006, 2009-2013 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_CHECK_TYPE_STRUCT_DIRENT_D_TYPE],
  [AC_CACHE_CHECK([for d_type member in directory struct],
                  gl_cv_struct_dirent_d_type,
     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <dirent.h>
         ]],
         [[struct dirent dp; dp.d_type = 0;]])],
       [gl_cv_struct_dirent_d_type=yes],
       [gl_cv_struct_dirent_d_type=no])
     ]
   )
   if test $gl_cv_struct_dirent_d_type = yes; then
     AC_DEFINE([HAVE_STRUCT_DIRENT_D_TYPE], [1],
       [Define if there is a member named d_type in the struct describing
        directory headers.])
   fi
  ]
)