*** ./configure.ORIG	Fri Sep 22 17:59:21 2017
--- ./configure	Fri Sep 22 17:59:58 2017
***************
*** 6020,6051 ****
    have_threads=no
  fi
  
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __sync_add_and_fetch" >&5
- $as_echo_n "checking for __sync_add_and_fetch... " >&6; }
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
- /* end confdefs.h.  */
- $ac_includes_default
-     extern volatile int x;
- int
- main ()
- {
- printf("%d", __sync_add_and_fetch(&x, 1));
-   ;
-   return 0;
- }
- _ACEOF
- if ac_fn_c_try_compile "$LINENO"; then :
- 
- $as_echo "#define HAVE___SYNC_ADD_AND_FETCH 1" >>confdefs.h
- 
-     result=yes
- else
-   result=no
- fi
- rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $result" >&5
- $as_echo "$result" >&6; }
- 
  # Check whether --enable-threads was given.
  if test "${enable_threads+set}" = set; then :
    enableval=$enable_threads;
--- 6020,6025 ----