Fix "make install" handling of symlinks
diff --git a/Makefile b/Makefile
index f9a4ce2..441d1f9 100644
--- a/Makefile
+++ b/Makefile
@@ -23,7 +23,7 @@
 	cp -r include/polarssl $(DESTDIR)/include
 	
 	mkdir -p $(DESTDIR)/lib
-	cp library/libpolarssl.* library/libmbedtls.* $(DESTDIR)/lib
+	cp -RP library/libpolarssl.* library/libmbedtls.* $(DESTDIR)/lib
 	
 	mkdir -p $(DESTDIR)/bin
 	for p in programs/*/* ; do              \