1 files changed, 39 insertions, 0 deletions
diff --git a/lib/erl_interface/src/misc/ei_compat.c b/lib/erl_interface/src/misc/ei_compat.c
new file mode 100644
index 0000000000..45ea6e3a72
--- /dev/null
+++ b/lib/erl_interface/src/misc/ei_compat.c
@@ -0,0 +1,39 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 2004-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ *
+
+ */
+#include "ei.h"
+#include "ei_internal.h"
+
+#define EI_COMPAT_NO_REL (~((unsigned) 0))
+
+static unsigned compat_rel = EI_COMPAT_NO_REL;
+
+void
+ei_set_compat_rel(unsigned rel)
+{
+    if (compat_rel == EI_COMPAT_NO_REL)
+	compat_rel = rel;
+}
+
+int
+ei_internal_use_r9_pids_ports(void)
+{
+    return compat_rel < 10;
+}