diff -urN diffutils-2.9-orig/configure diffutils-2.9/configure
--- diffutils-2.9-orig/configure	2010-02-11 18:46:35 +0900
+++ diffutils-2.9/configure	2010-02-16 00:11:11 +0900
@@ -1892,6 +1892,8 @@
   --disable-rpath         do not hardcode runtime library paths
   --enable-gcc-warnings   turn on lots of GCC warnings (for developers)
   --disable-nls           do not use Native Language Support
+  --disable-nanosecond-timestamps
+                          disable nanosecond resolution in timestamps
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -3636,6 +3638,12 @@
 ac_config_headers="$ac_config_headers lib/config.h:lib/config.hin"
 
 
+# Check whether --enable-nanosecond-timestamps was given.
+if test "${enable_nanosecond_timestamps+set}" = set; then
+  enableval=$enable_nanosecond_timestamps; if test "no" = "$enableval"; then ac_cv_search_clock_gettime=no; fi
+fi
+
+
 for ac_prog in gawk mawk nawk awk
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
diff -urN diffutils-2.9-orig/configure.ac diffutils-2.9/configure.ac
--- diffutils-2.9-orig/configure.ac	2010-02-05 17:10:15 +0900
+++ diffutils-2.9/configure.ac	2010-02-16 00:06:07 +0900
@@ -31,6 +31,11 @@
 
 AC_CONFIG_HEADER([lib/config.h:lib/config.hin])
 
+AC_ARG_ENABLE(nanosecond-timestamps,
+              [AS_HELP_STRING([--disable-nanosecond-timestamps],
+                              [disable nanosecond resolution in timestamps])],
+              [if test "no" = "$enableval"; then ac_cv_search_clock_gettime=no; fi])
+
 AC_PROG_AWK
 AC_PROG_CC
 AM_PROG_CC_STDC
diff -urN diffutils-2.9-orig/src/context.c diffutils-2.9/src/context.c
--- diffutils-2.9-orig/src/context.c	2010-02-05 17:10:15 +0900
+++ diffutils-2.9/src/context.c	2010-02-16 00:08:14 +0900
@@ -57,17 +57,29 @@
 	      && TYPE_MAXIMUM (time_t) <= LONG_MAX)
 	    {
 	      long int sec = inf->stat.st_mtime;
+#if HAVE_CLOCK_GETTIME
 	      sprintf (buf, "%ld.%.9d", sec, nsec);
+#else
+	      sprintf (buf, "%ld", sec);
+#endif
 	    }
 	  else if (TYPE_MAXIMUM (time_t) <= INTMAX_MAX)
 	    {
 	      intmax_t sec = inf->stat.st_mtime;
+#if HAVE_CLOCK_GETTIME
 	      sprintf (buf, "%"PRIdMAX".%.9d", sec, nsec);
+#else
+	      sprintf (buf, "%"PRIdMAX, sec);
+#endif
 	    }
 	  else
 	    {
 	      uintmax_t sec = inf->stat.st_mtime;
+#if HAVE_CLOCK_GETTIME
 	      sprintf (buf, "%"PRIuMAX".%.9d", sec, nsec);
+#else
+	      sprintf (buf, "%"PRIuMAX, sec);
+#endif
 	    }
 	}
       fprintf (outfile, "%s %s\t%s\n", mark, inf->name, buf);
diff -urN diffutils-2.9-orig/src/diff.c diffutils-2.9/src/diff.c
--- diffutils-2.9-orig/src/diff.c	2010-02-11 18:39:17 +0900
+++ diffutils-2.9/src/diff.c	2010-02-16 00:09:48 +0900
@@ -636,7 +636,7 @@
   if (output_style != OUTPUT_CONTEXT || hard_locale (LC_TIME))
     {
 #if (defined STAT_TIMESPEC || defined STAT_TIMESPEC_NS \
-     || defined HAVE_STRUCT_STAT_ST_SPARE1)
+     || defined HAVE_STRUCT_STAT_ST_SPARE1) && HAVE_CLOCK_GETTIME
       time_format = "%Y-%m-%d %H:%M:%S.%N %z";
 #else
       time_format = "%Y-%m-%d %H:%M:%S %z";