maint: update copyright

[gnulib.git] / m4 / stat-time.m4

diff --git a/m4/stat-time.m4 b/m4/stat-time.m4
index 89a7aa4..ea5c4fc 100644 (file)
--- a/m4/stat-time.m4
+++ b/m4/stat-time.m4
@@ -1,68 +1,83 @@
 # Checks for stat-related time functions.
 
-# Copyright (C) 1998, 1999, 2001, 2003, 2005 Free Software Foundation, Inc.
+# Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2014 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_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>
-           #if TIME_WITH_SYS_TIME
-           # include <sys/time.h>
-           # include <time.h>
-           #else
-           # if HAVE_SYS_TIME_H
-           #  include <sys/time.h>
-           # else
-           #  include <time.h>
-           # endif
-           #endif
-           #include <sys/stat.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])])
+       [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+          [[
+            #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,
+       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.])
+          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>])],
-            [#include <sys/types.h>
-             #include <sys/stat.h>])],
-         [#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>
+           #include <sys/stat.h>])],
+       [#include <sys/types.h>
+        #include <sys/stat.h>])],
+    [#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([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/stat.h>])],
     [#include <sys/types.h>
      #include <sys/stat.h>])
 ])