1 files changed, 33 insertions, 0 deletions
diff --git a/fpga_interchange/xdc.h b/fpga_interchange/xdc.h
new file mode 100644
index 00000000..c6b80870
--- /dev/null
+++ b/fpga_interchange/xdc.h
@@ -0,0 +1,33 @@
+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2021  Symbiflow Authors
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include <tcl.h>
+#include "nextpnr.h"
+
+NEXTPNR_NAMESPACE_BEGIN
+
+struct TclInterp
+{
+    TclInterp(Context *ctx);
+    ~TclInterp();
+
+    Tcl_Interp *interp;
+};
+
+NEXTPNR_NAMESPACE_END