From 06cec0e97f506e05a6a77831485eb129da68007f Mon Sep 17 00:00:00 2001
From: Alonso Schaich <alonsoschaich@fastmail.fm>
Date: Sun, 18 Feb 2024 17:06:33 +0900
Subject: [PATCH] Properly test for variable definition

---
 scripts/bootstrap.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/bootstrap.sh b/scripts/bootstrap.sh
index a5140ccd4be902..caf0d4f98275a2 100644
--- a/scripts/bootstrap.sh
+++ b/scripts/bootstrap.sh
@@ -103,10 +103,10 @@ fi
 if [ "$UNAME" = "OpenBSD" ]; then
     vcpkgUseSystem="ON"
 
-    if [ -z "$CXX" ]; then
+    if [ -z ${$CXX+x} ]; then
         CXX=/usr/bin/clang++
     fi
-    if [ -z "$CC" ]; then
+    if [ -z ${CC+x} ]; then
         CC=/usr/bin/clang
     fi
 fi