--- gdal-1.10.0-orig/swig/ruby/RubyMakefile.mk
+++ gdal-1.10.0/swig/ruby/RubyMakefile.mk
@@ -56,10 +56,10 @@
 veryclean: clean
 	rm -f *_wrap.cpp
 
-$(INSTALL_DIR):
+$(DESTDIR)$(INSTALL_DIR):
 	mkdir -p $(DESTDIR)$(INSTALL_DIR)
 
-install: $(INSTALL_DIR) $(RUBY_MODULES)
+install: $(DESTDIR)$(INSTALL_DIR) $(RUBY_MODULES)
 	for i in $(RUBY_MODULES) ; do $(INSTALL) $$i $(DESTDIR)$(INSTALL_DIR) ; done
 
 $(RUBY_MODULES_MAC): %.bundle: %_wrap.o