diff --git a/debian/rules b/debian/rules
index fa731afb..29b9f552 100755
--- a/debian/rules
+++ b/debian/rules
@@ -375,7 +375,7 @@ endif
 	-DLIBCXXABI_LIBCXX_INCLUDES=$(BASE_PATH)/libcxx/include \
 	-DLIBCXXABI_ENABLE_EXCEPTIONS=$(LIBCXX_EXCEPTIONS) \
 	-DLLVM_ENABLE_RTTI=ON && \
-	$(MAKE) $(NJOBS) VERBOSE=1
+	$(PRE_PROCESS_CONF) $(MAKE) $(NJOBS) VERBOSE=1 CXXFLAGS="$(CXXFLAGS_EXTRA)"  LDFLAGS="$(LDFLAGS_EXTRA)"
 
 	CMAKE_BIN=cmake; \
 	if test -f /tmp/cmake/bin/cmake; then \
@@ -390,7 +390,7 @@ endif
 	-DLIBCXX_CXX_ABI_LIBRARY_PATH=$(BASE_PATH)/libcxxabi/build/lib \
 	-DLIBCXX_ENABLE_EXCEPTIONS=$(LIBCXX_EXCEPTIONS) \
 	-DLIBCXX_INSTALL_EXPERIMENTAL_LIBRARY=ON && \
-	$(MAKE) $(NJOBS) VERBOSE=1
+	$(PRE_PROCESS_CONF) $(MAKE) $(NJOBS) VERBOSE=1 CXXFLAGS="$(CXXFLAGS_EXTRA)"  LDFLAGS="$(LDFLAGS_EXTRA)"
 
 override_dh_prep: build_doc
 	dh_prep