diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 54871e7..0314ea2 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -223,6 +223,7 @@ DTC_INCLUDE    += $(srctree)/scripts/dtc/include-prefixes
 
 dtc_cpp_flags  = -Wp,-MMD,$(depfile).pre.tmp -nostdinc                    \
 		 $(addprefix -I,$(DTC_INCLUDE))                          \
+		 $(DTC_CPP_FLAGS)					\
 		 -undef -D__DTS__
 
 ifeq ($(CONFIG_LTO_CLANG),y)
@@ -348,7 +349,8 @@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE
 	$(call if_changed,dt_S_dtb)
 
 quiet_cmd_dtc = DTC     $@
-cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
+	$(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
 	$(DTC) -o $@ -b 0 \
 		$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
 		-d $(depfile).dtc.tmp $(dtc-tmp) ; \