1# Checks for stat-related time functions. 2 3# Copyright (C) 1998, 1999, 2001, 2003, 2005, 2006, 2007 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([AC_C_INLINE]) 23 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) 24 AC_CHECK_HEADERS_ONCE([sys/time.h]) 25 26 AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec], 27 [AC_CACHE_CHECK([whether struct stat.st_atim is of type struct timespec], 28 [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec], 29 [AC_TRY_COMPILE( 30 [ 31 #include <sys/types.h> 32 #include <sys/stat.h> 33 #if HAVE_SYS_TIME_H 34 # include <sys/time.h> 35 #endif 36 #include <time.h> 37 struct timespec ts; 38 struct stat st; 39 ], 40 [ 41 st.st_atim = ts; 42 ], 43 [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=yes], 44 [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=no])]) 45 if test $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec = yes; then 46 AC_DEFINE([TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC], 1, 47 [Define to 1 if the type of the st_atim member of a struct stat is 48 struct timespec.]) 49 fi], 50 [AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec], [], 51 [AC_CHECK_MEMBERS([struct stat.st_atimensec], [], 52 [AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [], [], 53 [#include <sys/types.h> 54 #include <sys/stat.h>])], 55 [#include <sys/types.h> 56 #include <sys/stat.h>])], 57 [#include <sys/types.h> 58 #include <sys/stat.h>])], 59 [#include <sys/types.h> 60 #include <sys/stat.h>]) 61]) 62 63# Check for st_birthtime, a feature from UFS2 (FreeBSD, NetBSD, OpenBSD, etc.) 64# and NTFS (Cygwin). 65# There was a time when this field was named st_createtime (21 June 66# 2002 to 16 July 2002) But that window is very small and applied only 67# to development code, so systems still using that configuration are 68# not supported. See revisions 1.10 and 1.11 of FreeBSD's 69# src/sys/ufs/ufs/dinode.h. 70# 71AC_DEFUN([gl_STAT_BIRTHTIME], 72[ 73 AC_REQUIRE([AC_C_INLINE]) 74 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) 75 AC_CHECK_HEADERS_ONCE([sys/time.h]) 76 AC_CHECK_MEMBERS([struct stat.st_birthtimespec.tv_nsec], [], 77 [AC_CHECK_MEMBERS([struct stat.st_birthtimensec], [], 78 [AC_CHECK_MEMBERS([struct stat.st_birthtim.tv_nsec], [], [], 79 [#include <sys/types.h> 80 #include <sys/stat.h>])], 81 [#include <sys/types.h> 82 #include <sys/stat.h>])], 83 [#include <sys/types.h> 84 #include <sys/stat.h>]) 85]) 86