X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fstat-time.m4;h=cdef9d135621a849ec1508d402caf0b3363bda76;hb=ff4e8f6b53d7b8c53856ba8ba2adaad3251e6a88;hp=353de213f96a827d279fbf6f7706adcfe3192e57;hpb=5661ab9d49512b4cf3c19caa11bb581d8ce561ba;p=gnulib.git

diff --git a/m4/stat-time.m4 b/m4/stat-time.m4
index 353de213f..cdef9d135 100644
--- a/m4/stat-time.m4
+++ b/m4/stat-time.m4
@@ -1,6 +1,6 @@
 # Checks for stat-related time functions.
 
-# Copyright (C) 1998, 1999, 2001, 2003, 2005, 2006, 2007 Free Software
+# Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009 Free Software
 # Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
@@ -9,11 +9,13 @@
 
 dnl From Paul Eggert.
 
-# st_atim.tv_nsec - Linux, Solaris
-# st_atimespec.tv_nsec - FreeBSD, if ! defined _POSIX_SOURCE
-# st_atimensec - FreeBSD, if defined _POSIX_SOURCE
+# st_atim.tv_nsec - Linux, Solaris, Cygwin
+# st_atimespec.tv_nsec - FreeBSD, NetBSD, if ! defined _POSIX_SOURCE
+# st_atimensec - FreeBSD, NetBSD, if defined _POSIX_SOURCE
 # st_atim.st__tim.tv_nsec - UnixWare (at least 2.1.2 through 7.1)
-# st_spare1 - Cygwin?
+
+# st_birthtimespec - FreeBSD, NetBSD (hidden on OpenBSD 3.9, anyway)
+# st_birthtim - Cygwin 1.7.0+
 
 AC_DEFUN([gl_STAT_TIME],
 [
@@ -24,8 +26,8 @@ AC_DEFUN([gl_STAT_TIME],
   AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec],
     [AC_CACHE_CHECK([whether struct stat.st_atim is of type struct timespec],
        [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec],
-       [AC_TRY_COMPILE(
-	  [
+       [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+	  [[
 	    #include <sys/types.h>
 	    #include <sys/stat.h>
 	    #if HAVE_SYS_TIME_H
@@ -34,24 +36,20 @@ AC_DEFUN([gl_STAT_TIME],
 	    #include <time.h>
 	    struct timespec ts;
 	    struct stat st;
-	  ],
-	  [
+	  ]],
+	  [[
 	    st.st_atim = ts;
-	  ],
+	  ]])],
 	  [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=yes],
 	  [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=no])])
      if test $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec = yes; then
-       AC_DEFINE([TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC], 1,
-         [Define to 1 if the type of the st_atim member of a struct stat is
+       AC_DEFINE([TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC], [1],
+	 [Define to 1 if the type of the st_atim member of a struct stat is
 	  struct timespec.])
      fi],
     [AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec], [],
        [AC_CHECK_MEMBERS([struct stat.st_atimensec], [],
-	  [AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [],
-	     [AC_CHECK_MEMBERS([struct stat.st_spare1], [],
-		[],
-		[#include <sys/types.h>
-		 #include <sys/stat.h>])],
+	  [AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [], [],
 	     [#include <sys/types.h>
 	      #include <sys/stat.h>])],
 	  [#include <sys/types.h>
@@ -61,3 +59,27 @@ AC_DEFUN([gl_STAT_TIME],
     [#include <sys/types.h>
      #include <sys/stat.h>])
 ])
+
+# Check for st_birthtime, a feature from UFS2 (FreeBSD, NetBSD, OpenBSD, etc.)
+# and NTFS (Cygwin).
+# There was a time when this field was named st_createtime (21 June
+# 2002 to 16 July 2002) But that window is very small and applied only
+# to development code, so systems still using that configuration are
+# not supported.  See revisions 1.10 and 1.11 of FreeBSD's
+# src/sys/ufs/ufs/dinode.h.
+#
+AC_DEFUN([gl_STAT_BIRTHTIME],
+[
+  AC_REQUIRE([AC_C_INLINE])
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_CHECK_HEADERS_ONCE([sys/time.h])
+  AC_CHECK_MEMBERS([struct stat.st_birthtimespec.tv_nsec], [],
+    [AC_CHECK_MEMBERS([struct stat.st_birthtimensec], [],
+      [AC_CHECK_MEMBERS([struct stat.st_birthtim.tv_nsec], [], [],
+	 [#include <sys/types.h>
+	  #include <sys/stat.h>])],
+       [#include <sys/types.h>
+	#include <sys/stat.h>])],
+    [#include <sys/types.h>
+     #include <sys/stat.h>])
+])