1# Checks for stat-related time functions. 2 3# Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2014 Free Software 4# Foundation, Inc. 5 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. 9 10dnl From Paul Eggert. 11 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) 16 17# st_birthtimespec - FreeBSD, NetBSD (hidden on OpenBSD 3.9, anyway) 18# st_birthtim - Cygwin 1.7.0+ 19 20AC_DEFUN([gl_STAT_TIME], 21[ 22 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) 23 AC_CHECK_HEADERS_ONCE([sys/time.h]) 24 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( 29 [[ 30 #include <sys/types.h> 31 #include <sys/stat.h> 32 #if HAVE_SYS_TIME_H 33 # include <sys/time.h> 34 #endif 35 #include <time.h> 36 struct timespec ts; 37 struct stat st; 38 ]], 39 [[ 40 st.st_atim = ts; 41 ]])], 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 47 struct timespec.]) 48 fi], 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>]) 60]) 61 62# Check for st_birthtime, a feature from UFS2 (FreeBSD, NetBSD, OpenBSD, etc.) 63# and NTFS (Cygwin). 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. 69# 70AC_DEFUN([gl_STAT_BIRTHTIME], 71[ 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>]) 83]) 84