Don't create an absolute symlink when installing on Darwin

Makefile.install

@@ -79,7 +79,8 @@ endif
 ifeq ($(OSNAME), Darwin)
 	@-cp $(LIBDYNNAME) $(DESTDIR)$(OPENBLAS_LIBRARY_DIR)
 	@-install_name_tool -id $(DESTDIR)$(OPENBLAS_LIBRARY_DIR)/$(LIBDYNNAME) $(DESTDIR)$(OPENBLAS_LIBRARY_DIR)/$(LIBDYNNAME)
-	@-ln -fs $(DESTDIR)$(OPENBLAS_LIBRARY_DIR)/$(LIBDYNNAME) $(DESTDIR)$(OPENBLAS_LIBRARY_DIR)/$(LIBPREFIX).dylib
+	@cd $(DESTDIR)$(OPENBLAS_LIBRARY_DIR) ; \
+	ln -fs $(LIBDYNNAME) $(LIBPREFIX).dylib
 endif
 ifeq ($(OSNAME), WINNT)
 	@-cp $(LIBDLLNAME) $(OPENBLAS_BINARY_DIR)