Don't use the ACK preprocessor on host files --- use the host preprocessor

instead.

--HG--
branch : default-branch

mach/proto/as/build.mk

@@ -24,24 +24,16 @@ define build-as-impl
 
 	$(call yacc, $(OBJDIR)/$D, $(OBJDIR)/$D/preprocessed-comm2.y)
 
-$(eval CLEANABLES += $(OBJDIR)/$D/preprocessed-comm2.y)
-$(OBJDIR)/$D/preprocessed-comm2.y: mach/proto/as/comm2.y $(CPPANSI) \
-		mach/$(ARCH)/as/mach1.c \
-		mach/$(ARCH)/as/mach2.c \
-		mach/$(ARCH)/as/mach3.c \
-		mach/$(ARCH)/as/mach4.c
-	@echo PREPROCESS $$@
-	@mkdir -p $$(dir $$@)
-	$(hide) $(CPPANSI) -P \
-		-Imach/$(ARCH)/as \
-		-Imach/proto/as \
-		-Ih \
-		mach/proto/as/comm2.y > $$@
-
 	$(call rawfile, $(LIBOBJECT))
     $(call cprogram, $(BINDIR)/$(PLATFORM)/as)
     $(call installto, $(PLATDEP)/$(PLATFORM)/as)
 
+	$(call reset)
+    $(eval cflags += -Imach/$(ARCH)/as -I$(OBJDIR)/$D)
+    $(eval objdir := $(ARCH))
+	$(call cppfile, mach/proto/as/comm2.y)
+	$(call installto, $(OBJDIR)/$D/preprocessed-comm2.y)
+
     $(call reset)
     $(call rawfile, man/$(ARCH)_as.6)
     $(call installto, $(INSDIR)/share/man/man6/$(ARCH)_as.6)