| 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, 2009-2021 Free Software
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| 4 | # Foundation, Inc.
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| 5 |
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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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| 9 |
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| 10 | dnl From Paul Eggert.
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| 11 |
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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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| 19 |
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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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| 24 |
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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 | ])
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