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annotate m4/stat-time.m4 @ 17363:5a51fb7777a9

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sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin Problem reported by Marco Atzeri in <http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>. * lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]: Simply delegate to the system <sys/select.h> in this case too. Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to be needed on Solaris either. * lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]: Simply delgate to the system <sys/time.h> in this case.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 19 Mar 2013 09:08:47 -0700
parents e542fd46ad6f
children 344018b6e5d7
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1 # Checks for stat-related time functions.
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2
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3 # Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2013 Free Software
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4 # Foundation, Inc.
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6 # This file is free software; the Free Software Foundation
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7 # gives unlimited permission to copy and/or distribute it,
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8 # with or without modifications, as long as this notice is preserved.
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10 dnl From Paul Eggert.
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12 # st_atim.tv_nsec - Linux, Solaris, Cygwin
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13 # st_atimespec.tv_nsec - FreeBSD, NetBSD, if ! defined _POSIX_SOURCE
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14 # st_atimensec - FreeBSD, NetBSD, if defined _POSIX_SOURCE
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15 # st_atim.st__tim.tv_nsec - UnixWare (at least 2.1.2 through 7.1)
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16
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17 # st_birthtimespec - FreeBSD, NetBSD (hidden on OpenBSD 3.9, anyway)
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18 # st_birthtim - Cygwin 1.7.0+
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20 AC_DEFUN([gl_STAT_TIME],
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21 [
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22 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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23 AC_CHECK_HEADERS_ONCE([sys/time.h])
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25 AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec],
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26 [AC_CACHE_CHECK([whether struct stat.st_atim is of type struct timespec],
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27 [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec],
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28 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
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29 [[
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30 #include <sys/types.h>
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31 #include <sys/stat.h>
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32 #if HAVE_SYS_TIME_H
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33 # include <sys/time.h>
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34 #endif
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35 #include <time.h>
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36 struct timespec ts;
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37 struct stat st;
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38 ]],
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39 [[
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40 st.st_atim = ts;
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41 ]])],
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42 [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=yes],
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43 [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=no])])
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44 if test $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec = yes; then
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45 AC_DEFINE([TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC], [1],
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46 [Define to 1 if the type of the st_atim member of a struct stat is
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47 struct timespec.])
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48 fi],
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49 [AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec], [],
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50 [AC_CHECK_MEMBERS([struct stat.st_atimensec], [],
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51 [AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [], [],
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52 [#include <sys/types.h>
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53 #include <sys/stat.h>])],
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54 [#include <sys/types.h>
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55 #include <sys/stat.h>])],
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56 [#include <sys/types.h>
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57 #include <sys/stat.h>])],
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58 [#include <sys/types.h>
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59 #include <sys/stat.h>])
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60 ])
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61
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62 # Check for st_birthtime, a feature from UFS2 (FreeBSD, NetBSD, OpenBSD, etc.)
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63 # and NTFS (Cygwin).
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64 # There was a time when this field was named st_createtime (21 June
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65 # 2002 to 16 July 2002) But that window is very small and applied only
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66 # to development code, so systems still using that configuration are
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67 # not supported. See revisions 1.10 and 1.11 of FreeBSD's
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68 # src/sys/ufs/ufs/dinode.h.
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69 #
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70 AC_DEFUN([gl_STAT_BIRTHTIME],
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71 [
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72 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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73 AC_CHECK_HEADERS_ONCE([sys/time.h])
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74 AC_CHECK_MEMBERS([struct stat.st_birthtimespec.tv_nsec], [],
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75 [AC_CHECK_MEMBERS([struct stat.st_birthtimensec], [],
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76 [AC_CHECK_MEMBERS([struct stat.st_birthtim.tv_nsec], [], [],
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77 [#include <sys/types.h>
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78 #include <sys/stat.h>])],
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79 [#include <sys/types.h>
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80 #include <sys/stat.h>])],
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81 [#include <sys/types.h>
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82 #include <sys/stat.h>])
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83 ])