From a5691285ecb54a263e4d3baa54400cff049c8a89 Mon Sep 17 00:00:00 2001
From: Nicolas Arnaud-Cormos <nicolas.arnaudcormos@gmail.com>
Date: Thu, 28 Aug 2014 13:34:59 +0200
Subject: [PATCH] Ensure-Exists is necessary for build.ps1, add it back.

---
 scripts/utils.ps1 | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/scripts/utils.ps1 b/scripts/utils.ps1
index 2835ac9af..714c983d6 100644
--- a/scripts/utils.ps1
+++ b/scripts/utils.ps1
@@ -1,3 +1,11 @@
+function Ensure-Exists ($path) {
+    if (-not (Test-Path $path)) {
+        Write-Error "Missing required $path! Ensure it is installed"
+        exit 1
+    }
+    return $true > $null
+}
+
 function Ensure-Executable ($command) {
     try { Get-Command $command -ErrorAction Stop > $null }
     catch {
@@ -47,4 +55,4 @@ function Flatten-Directory ($name) {
 
 function Digest-MD5 ($path) {
     return Invoke-Expression "md5sum $path"
-}
\ No newline at end of file
+}