From 0294cf863e7f5ce2f85df450afe37f1443c00a05 Mon Sep 17 00:00:00 2001
From: Chris Bracken <chris@bracken.jp>
Date: Thu, 9 Feb 2017 13:45:39 -0800
Subject: [PATCH] Improve file/dir existence check for Xcode backend (#8037)

---
 packages/flutter_tools/bin/xcode_backend.sh | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/packages/flutter_tools/bin/xcode_backend.sh b/packages/flutter_tools/bin/xcode_backend.sh
index e4d4fe559d..f88239832e 100755
--- a/packages/flutter_tools/bin/xcode_backend.sh
+++ b/packages/flutter_tools/bin/xcode_backend.sh
@@ -14,9 +14,12 @@ EchoError() {
 }
 
 AssertExists() {
-  RunCommand ls $1
-  if [ $? -ne 0 ]; then
-    EchoError "The path $1 does not exist"
+  if [[ ! -e "$1" ]]; then
+    if [[ -h "$1" ]]; then
+      EchoError "The path $1 is a symlink to a path that does not exist"
+    else
+      EchoError "The path $1 does not exist"
+    fi
     exit -1
   fi
   return 0