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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
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# Determine whether recent-enough GNU Make is being used.

# Copyright (C) 2007, 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.

# Written by Paul Eggert.

# Set GNU_MAKE if we are using a recent-enough version of GNU make.

# Use --version AND trailing junk, because SGI Make doesn't fail on --version.

AC_DEFUN([gl_GNU_MAKE],
[
  AM_CONDITIONAL([GNU_MAKE],
    [${MAKE-make} --version /cannot/make/this >/dev/null 2>&1])
])