--- a/Makefile	2012-09-14 22:46:11.508415083 +0200
+++ b/Makefile	2012-09-14 22:46:34.526338371 +0200
@@ -35,10 +35,13 @@
 
 install:
 	install -d $(DESTDIR)/pam
-	install -m 644 -t $(DESTDIR)/pam META *.mli *.cmi *.cmx *.cma *.cmxa *.a
+	install -m 644 -t $(DESTDIR)/pam META *.mli *.cmi *.cma *.a
 	install -d $(DESTDIR)/stublibs
 	install -m 644 -t $(DESTDIR)/stublibs dll$(BASENAME).so
 
+install-opt:
+	install -m 644 -t $(DESTDIR)/pam *.cmx *.cmxa
+
 dist: clean
 	mkdir -p $(DISTNAME)
 	-cp * $(DISTNAME)