1 files changed, 12 insertions, 5 deletions
diff --git a/dummy/arch.h b/dummy/arch.h
index 865536dc..02bec23a 100644
--- a/dummy/arch.h
+++ b/dummy/arch.h
@@ -17,13 +17,12 @@
  *
  */
 
-#ifndef CHIP_H
-#define CHIP_H
-
 #ifndef NEXTPNR_H
 #error Include "arch.h" via "nextpnr.h" only.
 #endif
 
+#ifdef NEXTPNR_ARCH_TOP
+
 NEXTPNR_NAMESPACE_BEGIN
 
 typedef float delay_t;
@@ -57,11 +56,19 @@ struct BelPin
     PortPin pin;
 };
 
+NEXTPNR_NAMESPACE_END
+
+#endif // NEXTPNR_ARCH_TOP
+
+#ifdef NEXTPNR_ARCH_BOTTOM
+
+NEXTPNR_NAMESPACE_BEGIN
+
 struct ArchArgs
 {
 };
 
-struct Arch
+struct Arch : BaseCtx
 {
     Arch(ArchArgs args);
 
@@ -128,4 +135,4 @@ struct Arch
 
 NEXTPNR_NAMESPACE_END
 
-#endif
+#endif // NEXTPNR_ARCH_BOTTOM