From 0380588c01ff829ad67c8e445a07f1defbeb9c79 Mon Sep 17 00:00:00 2001
From: Yuan Fu <casouri@gmail.com>
Date: Sun, 7 Apr 2024 23:51:26 -0700
Subject: [PATCH] Fix unset var check

---
 build.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build.sh b/build.sh
index 05b53d9..a5939ba 100755
--- a/build.sh
+++ b/build.sh
@@ -174,7 +174,7 @@ else
 fi
 
 ### Copy out
-if [[ -v INSTALL_DIR ]]; then
+if [ -z "${INSTALL_DIR+x}" ]; then
     dist_dir="${INSTALL_DIR}"
 else
     dist_dir="${topdir}/dist"