By default automake puts "sleep 1" into the start of configure scripts
which adds pointless delays to them. Rather than do this, lets just assume 
our systems are sane.

RP
2015/12/7
Upstream-Status: Inappropriate

Index: automake-1.15/m4/sanity.m4
===================================================================
--- automake-1.15.orig/m4/sanity.m4
+++ automake-1.15/m4/sanity.m4
@@ -23,60 +23,5 @@ case $srcdir in
     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
 esac
 
-# Do 'set' in a subshell so we don't clobber the current shell's
-# arguments.  Must try -L first in case configure is actually a
-# symlink; some systems play weird games with the mod time of symlinks
-# (eg FreeBSD returns the mod time of the symlink's containing
-# directory).
-if (
-   am_has_slept=no
-   for am_try in 1 2; do
-     echo "timestamp, slept: $am_has_slept" > conftest.file
-     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
-     if test "$[*]" = "X"; then
-	# -L didn't work.
-	set X `ls -t "$srcdir/configure" conftest.file`
-     fi
-     if test "$[*]" != "X $srcdir/configure conftest.file" \
-	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
-
-	# If neither matched, then we have a broken ls.  This can happen
-	# if, for instance, CONFIG_SHELL is bash and it inherits a
-	# broken ls alias from the environment.  This has actually
-	# happened.  Such a system could not be considered "sane".
-	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
-  alias in your environment])
-     fi
-     if test "$[2]" = conftest.file || test $am_try -eq 2; then
-       break
-     fi
-     # Just in case.
-     sleep 1
-     am_has_slept=yes
-   done
-   test "$[2]" = conftest.file
-   )
-then
-   # Ok.
-   :
-else
-   AC_MSG_ERROR([newly created file is older than distributed files!
-Check your system clock])
-fi
 AC_MSG_RESULT([yes])
-# If we didn't sleep, we still need to ensure time stamps of config.status and
-# generated files are strictly newer.
-am_sleep_pid=
-if grep 'slept: no' conftest.file >/dev/null 2>&1; then
-  ( sleep 1 ) &
-  am_sleep_pid=$!
-fi
-AC_CONFIG_COMMANDS_PRE(
-  [AC_MSG_CHECKING([that generated files are newer than configure])
-   if test -n "$am_sleep_pid"; then
-     # Hide warnings about reused PIDs.
-     wait $am_sleep_pid 2>/dev/null
-   fi
-   AC_MSG_RESULT([done])])
-rm -f conftest.file
 ])