Index: Makefile
===================================================================
--- Makefile	(revision 6a347b1e3ccafd6fcaaca3d1b6a51b0df77b2d70)
+++ Makefile	(revision 4a7c273b5f40b812fa08d3b1111a2de6db609d72)
@@ -39,6 +39,12 @@
 	libadt \
 	init \
-	pci \
 	ns
+
+ifeq ($(ARCH), amd64)
+	DIRS += pci
+endif
+ifeq ($(ARCH), ia32)
+	DIRS += pci
+endif
 
 BUILDS := $(addsuffix .build,$(DIRS))