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84 lines
3.1 KiB
Plaintext
84 lines
3.1 KiB
Plaintext
# stat-time.m4
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# serial 1
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dnl Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2024 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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# Checks for stat-related time functions.
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dnl From Paul Eggert.
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# st_atim.tv_nsec - Linux, Solaris, Cygwin
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# st_atimespec.tv_nsec - FreeBSD, NetBSD, if ! defined _POSIX_SOURCE
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# st_atimensec - FreeBSD, NetBSD, if defined _POSIX_SOURCE
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# st_atim.st__tim.tv_nsec - UnixWare (at least 2.1.2 through 7.1)
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# st_birthtimespec - FreeBSD, NetBSD (hidden on OpenBSD 3.9, anyway)
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# st_birthtim - Cygwin 1.7.0+
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AC_DEFUN([gl_STAT_TIME],
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[
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_CHECK_HEADERS_ONCE([sys/time.h])
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AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec],
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[AC_CACHE_CHECK([whether struct stat.st_atim is of type struct timespec],
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[ac_cv_typeof_struct_stat_st_atim_is_struct_timespec],
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
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[[
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#include <sys/types.h>
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#include <sys/stat.h>
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#if HAVE_SYS_TIME_H
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# include <sys/time.h>
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#endif
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#include <time.h>
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struct timespec ts;
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struct stat st;
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]],
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[[
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st.st_atim = ts;
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]])],
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[ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=yes],
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[ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=no])])
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if test $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec = yes; then
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AC_DEFINE([TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC], [1],
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[Define to 1 if the type of the st_atim member of a struct stat is
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struct timespec.])
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fi],
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[AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec], [],
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[AC_CHECK_MEMBERS([struct stat.st_atimensec], [],
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[AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [], [],
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[#include <sys/types.h>
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#include <sys/stat.h>])],
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[#include <sys/types.h>
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#include <sys/stat.h>])],
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[#include <sys/types.h>
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#include <sys/stat.h>])],
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[#include <sys/types.h>
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#include <sys/stat.h>])
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])
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# Check for st_birthtime, a feature from UFS2 (FreeBSD, NetBSD, OpenBSD, etc.)
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# and NTFS (Cygwin).
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# There was a time when this field was named st_createtime (21 June
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# 2002 to 16 July 2002) But that window is very small and applied only
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# to development code, so systems still using that configuration are
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# not supported. See revisions 1.10 and 1.11 of FreeBSD's
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# src/sys/ufs/ufs/dinode.h.
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#
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AC_DEFUN([gl_STAT_BIRTHTIME],
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[
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_CHECK_HEADERS_ONCE([sys/time.h])
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AC_CHECK_MEMBERS([struct stat.st_birthtimespec.tv_nsec], [],
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[AC_CHECK_MEMBERS([struct stat.st_birthtimensec], [],
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[AC_CHECK_MEMBERS([struct stat.st_birthtim.tv_nsec], [], [],
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[#include <sys/types.h>
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#include <sys/stat.h>])],
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[#include <sys/types.h>
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#include <sys/stat.h>])],
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[#include <sys/types.h>
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#include <sys/stat.h>])
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])
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