1 # Checks for stat-related time functions.
3 # Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2020 Free Software
6 # This file is free software; the Free Software Foundation
7 # gives unlimited permission to copy and/or distribute it,
8 # with or without modifications, as long as this notice is preserved.
12 # st_atim.tv_nsec - Linux, Solaris, Cygwin
13 # st_atimespec.tv_nsec - FreeBSD, NetBSD, if ! defined _POSIX_SOURCE
14 # st_atimensec - FreeBSD, NetBSD, if defined _POSIX_SOURCE
15 # st_atim.st__tim.tv_nsec - UnixWare (at least 2.1.2 through 7.1)
17 # st_birthtimespec - FreeBSD, NetBSD (hidden on OpenBSD 3.9, anyway)
18 # st_birthtim - Cygwin 1.7.0+
20 AC_DEFUN([gl_STAT_TIME],
22 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
23 AC_CHECK_HEADERS_ONCE([sys/time.h])
25 AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec],
26 [AC_CACHE_CHECK([whether struct stat.st_atim is of type struct timespec],
27 [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec],
28 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
30 #include <sys/types.h>
33 # include <sys/time.h>
42 [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=yes],
43 [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=no])])
44 if test $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec = yes; then
45 AC_DEFINE([TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC], [1],
46 [Define to 1 if the type of the st_atim member of a struct stat is
49 [AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec], [],
50 [AC_CHECK_MEMBERS([struct stat.st_atimensec], [],
51 [AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [], [],
52 [#include <sys/types.h>
53 #include <sys/stat.h>])],
54 [#include <sys/types.h>
55 #include <sys/stat.h>])],
56 [#include <sys/types.h>
57 #include <sys/stat.h>])],
58 [#include <sys/types.h>
59 #include <sys/stat.h>])
62 # Check for st_birthtime, a feature from UFS2 (FreeBSD, NetBSD, OpenBSD, etc.)
64 # There was a time when this field was named st_createtime (21 June
65 # 2002 to 16 July 2002) But that window is very small and applied only
66 # to development code, so systems still using that configuration are
67 # not supported. See revisions 1.10 and 1.11 of FreeBSD's
68 # src/sys/ufs/ufs/dinode.h.
70 AC_DEFUN([gl_STAT_BIRTHTIME],
72 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
73 AC_CHECK_HEADERS_ONCE([sys/time.h])
74 AC_CHECK_MEMBERS([struct stat.st_birthtimespec.tv_nsec], [],
75 [AC_CHECK_MEMBERS([struct stat.st_birthtimensec], [],
76 [AC_CHECK_MEMBERS([struct stat.st_birthtim.tv_nsec], [], [],
77 [#include <sys/types.h>
78 #include <sys/stat.h>])],
79 [#include <sys/types.h>
80 #include <sys/stat.h>])],
81 [#include <sys/types.h>
82 #include <sys/stat.h>])