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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
line source

# imaxabs.m4 serial 4
dnl Copyright (C) 2006, 2009-2013 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_FUNC_IMAXABS],
[
  AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])

  dnl On OSF/1 5.1 with cc, this function is declared but not defined.
  AC_CHECK_FUNCS_ONCE([imaxabs])
  AC_CHECK_DECLS_ONCE([imaxabs])
  if test "$ac_cv_have_decl_imaxabs" != yes; then
    HAVE_DECL_IMAXABS=0
  fi
])

# Prerequisites of lib/imaxabs.c.
AC_DEFUN([gl_PREREQ_IMAXABS], [:])