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-rw-r--r--Makeconfig5
1 files changed, 3 insertions, 2 deletions
diff --git a/Makeconfig b/Makeconfig
index d70c4795ef..1ef0cc571d 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -564,8 +564,9 @@ endif	# $(+cflags) == ""
 libio-include = -I$(..)libio
 
 # These are the variables that the implicit compilation rules use.
-CPPFLAGS = $(+includes) $(defines) -include $(..)include/libc-symbols.h \
-	   $(sysdep-CPPFLAGS) $(CPPFLAGS-$(suffix $@)) $(CPPFLAGS-$(<F)) \
+CPPFLAGS = $($(subdir)-CPPFLAGS) $(+includes) $(defines) \
+	   -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
+	   $($(subdir)-CPPFLAGS) $(CPPFLAGS-$(suffix $@)) $(CPPFLAGS-$(<F)) \
 	   $(CPPFLAGS-$(@F))
 override CFLAGS	= $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \
 		  $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F))