Preserve timestamps on header install
@@ -122,7 +122,7 @@ install-headers: $(EXTERNAL_HEADERS)
@mkdir -p "$(HEADERS_INSTALL_DIR)"; \
for file in $(EXTERNAL_HEADERS); do\
mkdir -p "$(HEADERS_INSTALL_DIR)/`dirname $${file#$(EXTERNAL_HEADERS_DIR)}`"; \
- install -m 644 $${file} "$(HEADERS_INSTALL_DIR)/$${file#$(EXTERNAL_HEADERS_DIR)}";\
+ install -p -m 644 $${file} "$(HEADERS_INSTALL_DIR)/$${file#$(EXTERNAL_HEADERS_DIR)}";\
done
