From 72ccb8294821d228910fbb6d9c234a91c5e200bf Mon Sep 17 00:00:00 2001
From: Brendan Early <mymindstorm@evermiss.net>
Date: May 11 2021 01:34:07 +0000
Subject: makefile: only define vars if not set in shell


---

diff --git a/Makefile b/Makefile
index bccc6d7..d9ddc7a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
-OUTPUT_DIR=public_html
-DB_DIR=repositories
-MAINTAINER_MAPPING=pagure_owner_alias.json
+OUTPUT_DIR?=public_html
+DB_DIR?=repositories
+MAINTAINER_MAPPING?=pagure_owner_alias.json
 
 help:
 	@echo "sync-repositories: download RPM repository metadata for active releases"