1 files changed, 34 insertions, 0 deletions
diff --git a/tools/build/src/engine/native.h b/tools/build/src/engine/native.h
new file mode 100644
index 000000000..6d38d01e0
--- /dev/null
+++ b/tools/build/src/engine/native.h
@@ -0,0 +1,34 @@
+/* Copyright 2003. David Abrahams
+ * Distributed under the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef NATIVE_H_VP_2003_12_09
+#define NATIVE_H_VP_2003_12_09
+
+#include "function.h"
+#include "frames.h"
+#include "lists.h"
+#include "object.h"
+
+typedef struct native_rule_t
+{
+    OBJECT * name;
+    FUNCTION * procedure;
+
+    /* Version of the interface that the native rule provides. It is possible
+     * that we want to change the set parameter for existing native rule. In
+     * that case, version number should be incremented so Boost.Build can check
+     * for the version it relies on.
+     *
+     * Versions are numbered from 1.
+    */
+    int version;
+} native_rule_t;
+/* MSVC debugger gets confused unless the native_rule_t typedef is provided. */
+
+void declare_native_rule( char const * module, char const * rule,
+    char const * * args, LIST * (*f)( FRAME *, int ), int version );
+
+#endif