macosclassic OS does not have unixtype unit

rtl/inc/Makefile.rtl

@@ -1489,8 +1489,10 @@ UnixApi.CWString$(PPUEXT) : $(NSINC)/UnixApi.CWString.pp $(CWSTRING_DEPS)
 #
 
 ifneq ($(UNIXINC),)
+ifneq ($(OS_TARGET),macosclassic)
   CTYPES_DEPS_OS+=$(UNIXTYPEUNIT)$(PPUEXT)
 endif
+endif
 
 CTYPES_DEPS=$(INC)/ctypes.pp \
             $(SYSTEMUNIT)$(PPUEXT) \