Mercurial > gnulib
view m4/sys_file_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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# Configure a replacement for <sys/file.h>. # serial 6 # Copyright (C) 2008-2013 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 Richard W.M. Jones. AC_DEFUN([gl_HEADER_SYS_FILE_H], [ AC_REQUIRE([gl_HEADER_SYS_FILE_H_DEFAULTS]) dnl <sys/file.h> is always overridden, because of GNULIB_POSIXCHECK. gl_CHECK_NEXT_HEADERS([sys/file.h]) if test $ac_cv_header_sys_file_h = yes; then HAVE_SYS_FILE_H=1 else HAVE_SYS_FILE_H=0 fi AC_SUBST([HAVE_SYS_FILE_H]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include <sys/file.h> ]], [flock]) ]) AC_DEFUN([gl_HEADER_SYS_FILE_MODULE_INDICATOR], [ AC_REQUIRE([gl_HEADER_SYS_FILE_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) ]) AC_DEFUN([gl_HEADER_SYS_FILE_H_DEFAULTS], [ GNULIB_FLOCK=0; AC_SUBST([GNULIB_FLOCK]) HAVE_FLOCK=1; AC_SUBST([HAVE_FLOCK]) ])