diff -ur ncurses-6.1/ncurses/Makefile.in ncurses-6.1+iPhone/ncurses/Makefile.in
--- ncurses-6.1/ncurses/Makefile.in	2018-01-15 09:28:45.000000000 -1000
+++ ncurses-6.1+iPhone/ncurses/Makefile.in	2018-08-03 13:09:39.000000000 -1000
@@ -233,12 +233,12 @@
 make_keys$(BUILD_EXEEXT) : \
 		$(tinfo)/make_keys.c \
 		names.c
-	$(BUILD_CC) -o $@ $(BUILD_CPPFLAGS) $(BUILD_CCFLAGS) $(tinfo)/make_keys.c $(BUILD_LDFLAGS) $(BUILD_LIBS)
+	$(BUILD_CC) -o $@ $(BUILD_CPPFLAGS) $(BUILD_CCFLAGS) $(tinfo)/make_keys.c $(BUILD_LDFLAGS) $(BUILD_LIBS) $(CPPFLAGS)
 
 make_hash$(BUILD_EXEEXT) : \
 		$(tinfo)/make_hash.c \
 		../include/hashsize.h
-	$(BUILD_CC) -o $@ $(BUILD_CPPFLAGS) $(BUILD_CCFLAGS) $(tinfo)/make_hash.c $(BUILD_LDFLAGS) $(BUILD_LIBS)
+	$(BUILD_CC) -o $@ $(BUILD_CPPFLAGS) $(BUILD_CCFLAGS) $(tinfo)/make_hash.c $(BUILD_LDFLAGS) $(BUILD_LIBS) $(CPPFLAGS)
 
 report_offsets$(BUILD_EXEEXT) : \
 		$(srcdir)/report_offsets.c