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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 344018b6e5d7
line wrap: on
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# mempcpy.m4 serial 11
dnl Copyright (C) 2003-2004, 2006-2007, 2009-2013 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_MEMPCPY],
[
  dnl Persuade glibc <string.h> to declare mempcpy().
  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

  dnl The mempcpy() declaration in lib/string.in.h uses 'restrict'.
  AC_REQUIRE([AC_C_RESTRICT])

  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
  AC_CHECK_FUNCS([mempcpy])
  if test $ac_cv_func_mempcpy = no; then
    HAVE_MEMPCPY=0
  fi
])

# Prerequisites of lib/mempcpy.c.
AC_DEFUN([gl_PREREQ_MEMPCPY], [
  :
])