$OpenBSD: patch-configure_in,v 1.10 2014/07/09 11:39:17 robert Exp $
--- configure.in.orig	Tue Jul  8 13:26:49 2014
+++ configure.in	Tue Jul  8 13:27:19 2014
@@ -178,9 +178,7 @@ case "$host" in
 		need_link_unlink=yes
 		AC_DEFINE(PTHREAD_POINTER_ID)
 		libdl=
-		gc_default=boehm
 		libgc_threads=pthreads
-		with_sigaltstack=no
 		use_sigposix=yes
 		;;
 	*-*-linux-android*)
