Index: /trunk/source/lisp-kernel/win64/Makefile
===================================================================
--- /trunk/source/lisp-kernel/win64/Makefile	(revision 13611)
+++ /trunk/source/lisp-kernel/win64/Makefile	(revision 13612)
@@ -31,5 +31,5 @@
 # however.
 WFORMAT = -Wno-format
-
+PLATFORM_H = platform-win64.h
 
 # If the linker supports a "--hash-style=" option, use traditional
@@ -57,5 +57,5 @@
 	$(M4) $(M4FLAGS) -I../ $< | $(AS)  $(ASFLAGS) -o $@
 .c.o:
-	$(CC) -I./ -c $< $(CDEFINES) $(CDEBUG) $(COPT) $(WFORMAT) ${SUPPRESS_UNDERSCORES} -m64 -o $@
+	$(CC) -include ../$(PLATFORM_H) -c $< $(CDEFINES) $(CDEBUG) $(COPT) $(WFORMAT) ${SUPPRESS_UNDERSCORES} -m64 -o $@
 
 SPOBJ = pad.o x86-spjump64.o x86-spentry64.o x86-subprims64.o
@@ -73,5 +73,6 @@
 CHEADERS = area.h bits.h x86-constants.h lisp-errors.h gc.h lisp.h \
 	lisp-exceptions.h lisp_globals.h macros.h memprotect.h image.h \
-	Threads.h x86-constants64.h x86-exceptions.h lisptypes.h
+	Threads.h x86-constants64.h x86-exceptions.h lisptypes.h \
+	$(PLATFORM_H)