Mercurial > gnulib
view m4/net_if_h.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> |
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date | Fri, 29 Mar 2013 19:47:13 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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# net_if_h.m4 serial 1 dnl Copyright (C) 2006-2013 Free Software Foundation, 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_HEADER_NET_IF], [ AC_CACHE_CHECK([whether <net/if.h> is self-contained], [gl_cv_header_net_if_h_selfcontained], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <net/if.h>]], [[]])], [gl_cv_header_net_if_h_selfcontained=yes], [gl_cv_header_net_if_h_selfcontained=no]) ]) if test $gl_cv_header_net_if_h_selfcontained = yes; then NET_IF_H='' else NET_IF_H='net/if.h' AC_CHECK_HEADERS([net/if.h], [], [], [[#include <sys/socket.h>]]) gl_NEXT_HEADERS([net/if.h]) if test $ac_cv_header_net_if_h = yes; then HAVE_NET_IF_H=1 else HAVE_NET_IF_H=0 fi AC_SUBST([HAVE_NET_IF_H]) fi AC_SUBST([NET_IF_H]) AM_CONDITIONAL([GL_GENERATE_NET_IF_H], [test -n "$NET_IF_H"]) ])