diff --git a/make/install-files.mk b/make/install-files.mk
index a8da9747..1b5fd67f 100644
--- a/make/install-files.mk
+++ b/make/install-files.mk
@@ -1,8 +1,12 @@
-LOCAL_FILES  ?= $(filter-out CVS .git Makefile %.done, $(wildcard *))
-TARGET_DIR   ?= $(PREFIX)/share
-TARGET_MODE  ?= 440
-TARGET_OWNER ?= root
-TARGET_GROUP ?= root
+LOCAL_FILES      ?= $(filter-out CVS .git Makefile %.done, $(wildcard *))
+TARGET_DIR       ?= $(PREFIX)/share
+TARGET_MODE      ?= 440
+TARGET_OWNER     ?= root
+TARGET_GROUP     ?= root
+TARGET_DIR_MODE  ?= 770
+TARGET_DIR_OWNER ?= root
+TARGET_DIR_GROUP ?= root
+SOURCE_BASE      ?= .
 
 include $(MODDIR)/make/defs.mk
 
@@ -15,7 +19,13 @@ done.clean:
 	rm -f *.done
 
 install.done:
-	mkdir -p $(TARGET_DIR)
-	$(INSTALL) -m $(TARGET_MODE) -o $(TARGET_OWNER) -g $(TARGET_GROUP) $(LOCAL_FILES) $(TARGET_DIR)/
+	for f in $(SOURCE_FILES); do \
+		relpath=`realpath $$f --relative-to $(SOURCE_BASE)` ;\
+		if [ -d $$f ]; then \
+			$(INSTALL) -d -D -m $(TARGET_DIR_MODE) -o $(TARGET_DIR_OWNER) -g $(TARGET_DIR_GROUP) $(TARGET_DIR)/$$relpath ;\
+		else \
+			$(INSTALL) -D -m $(TARGET_MODE) -o $(TARGET_OWNER) -g $(TARGET_GROUP) $$f $(TARGET_DIR)/$$relpath ;\
+		fi ;\
+	done
 	touch $@