diff --git a/configure b/configure
index acc483f..244e733 100755
--- a/configure
+++ b/configure
@@ -9363,76 +9363,6 @@ See \`config.log' for more details" "$LINENO" 5; } ;;
 esac
 
 
-saved_LIBS="$LIBS"
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing _obstack_free" >&5
-printf %s "checking for library containing _obstack_free... " >&6; }
-if test ${ac_cv_search__obstack_free+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  ac_func_search_save_LIBS=$LIBS
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-char _obstack_free ();
-int
-main (void)
-{
-return _obstack_free ();
-  ;
-  return 0;
-}
-_ACEOF
-for ac_lib in '' obstack
-do
-  if test -z "$ac_lib"; then
-    ac_res="none required"
-  else
-    ac_res=-l$ac_lib
-    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
-  fi
-  if ac_fn_c_try_link "$LINENO"
-then :
-  ac_cv_search__obstack_free=$ac_res
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext
-  if test ${ac_cv_search__obstack_free+y}
-then :
-  break
-fi
-done
-if test ${ac_cv_search__obstack_free+y}
-then :
-
-else $as_nop
-  ac_cv_search__obstack_free=no
-fi
-rm conftest.$ac_ext
-LIBS=$ac_func_search_save_LIBS
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search__obstack_free" >&5
-printf "%s\n" "$ac_cv_search__obstack_free" >&6; }
-ac_res=$ac_cv_search__obstack_free
-if test "$ac_res" != no
-then :
-  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-
-fi
-
-LIBS="$saved_LIBS"
-case "$ac_cv_search__obstack_free" in
-        no) { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "failed to find _obstack_free
-See \`config.log' for more details" "$LINENO" 5; } ;;
-        -l*) obstack_LIBS="$ac_cv_search__obstack_free" ;;
-        *) obstack_LIBS= ;;
-esac
-
 
 
 ac_config_files="$ac_config_files doc/Makefile"