X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fstat-time.m4;h=84dc26f4ac32c06e13878e4fbfaa3c2e60f65ebd;hb=2464bbfa7a6b82eca7bf3f7d517515ed462f1b23;hp=0f42f673db84ad9fc882e1fa96c5f11e58dfeed3;hpb=0fecb046139645c251a2f1c548280590f5f29126;p=gnulib.git

diff --git a/m4/stat-time.m4 b/m4/stat-time.m4
index 0f42f673d..84dc26f4a 100644
--- a/m4/stat-time.m4
+++ b/m4/stat-time.m4
@@ -1,33 +1,55 @@
 # Checks for stat-related time functions.
 
-# Copyright (C) 1998, 1999, 2001, 2003, 2005 Free Software Foundation, Inc.
+# Copyright (C) 1998, 1999, 2001, 2003, 2005, 2006, 2007 Free Software
+# Foundation, Inc.
+
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
 
 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],
 [
-  AC_LIBSOURCES([stat-time.h])
-
   AC_REQUIRE([AC_C_INLINE])
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_CHECK_HEADERS_ONCE([sys/time.h])
 
-  AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec], [],
+  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(
+	  [
+	    #include <sys/types.h>
+	    #include <sys/stat.h>
+	    #if HAVE_SYS_TIME_H
+	    # include <sys/time.h>
+	    #endif
+	    #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
+	  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>
@@ -37,3 +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>])
+])