From 4bac9e7e53195f6369ca15f9a6cb72520fe1b13b Mon Sep 17 00:00:00 2001
From: Robert Scheck <robert-scheck@users.noreply.github.com>
Date: Mon, 6 May 2024 00:33:12 +0200
Subject: [PATCH] Skip online test if no or empty /etc/resolv.conf (#113)

Downstream build systems, e.g. at Linux distributions like Fedora,
might be (sealed) offline (chroot) environments.
---
 Makefile.am | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index e3e74c9..a51836a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -36,4 +36,8 @@ maintainer-clean-local:
 check:
 	./bgpq4 -v
 	@echo
-	./bgpq4 -6 AS15562:AS-SNIJDERS | grep 2001:67c:208c::
+	-@if [ -s /etc/resolv.conf ]; then \
+		./bgpq4 -6 AS15562:AS-SNIJDERS | grep 2001:67c:208c::; \
+	else \
+		echo "No or empty /etc/resolv.conf, skipping online test"; \
+	fi