Implement makefile dependencies on COPTS variable.
diff --git a/.gitignore b/.gitignore
index fcdbcbd..23f1148 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,7 +3,7 @@
 src/dnsmasq.pot
 src/dnsmasq
 src/dnsmasq_baseline
-src/.configured
+src/.copts_*
 contrib/wrt/dhcp_lease_time
 contrib/wrt/dhcp_release
 debian/base/