From aa90d09940afce95be5b3cc96e2cdf1d8ff80d19 Mon Sep 17 00:00:00 2001
From: Alex Richardson <arichardson@FreeBSD.org>
Date: Mon, 8 Aug 2022 15:29:56 +0000
Subject: [PATCH] tools/ci-build.sh: Ensure that $builddir is set

When adding the new FreeBSD CI, this was not implicitly forwarded to QEMU,
so the build script failed with confusing errors. Add an explicit check
that the variable is set to make those cases easier to debug.
---
 tools/ci-build.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/ci-build.sh b/tools/ci-build.sh
index a71214db1..f9d9187c1 100755
--- a/tools/ci-build.sh
+++ b/tools/ci-build.sh
@@ -176,6 +176,10 @@ maybe_fail_tests () {
 NOCONFIGURE=1 ./autogen.sh
 
 # clean up directories from possible previous builds
+if [ -z "$builddir" ]; then
+  echo "ERROR: builddir environment variable must be set!"
+  exit 1
+fi
 rm -rf "$builddir"
 rm -rf ci-build-dist
 rm -rf src-from-dist
-- 
2.47.3