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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 0c8459454095
line wrap: on
line source

# gc.m4 serial 9
dnl Copyright (C) 2005-2013 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_GC],
[
  AC_ARG_WITH([libgcrypt],
    AS_HELP_STRING([--with-libgcrypt], [use libgcrypt for low-level crypto]),
    libgcrypt=$withval, libgcrypt=no)
  if test "$libgcrypt" != no; then
    AC_LIB_HAVE_LINKFLAGS([gcrypt], [gpg-error], [
#include <gcrypt.h>
/* GCRY_MODULE_ID_USER was added in 1.4.4 and gc-libgcrypt.c
   will fail on startup if we don't have 1.4.4 or later, so
   test for it early. */
#if !defined GCRY_MODULE_ID_USER
error too old libgcrypt
#endif
])
  fi
])