From 4ccf0d20858e79b1637664dc664fa94ea8229083 Mon Sep 17 00:00:00 2001
From: Bill Zissimopoulos <billziss@navimatics.com>
Date: Wed, 9 Feb 2022 17:01:32 +0000
Subject: [PATCH] build: allow builds outside git

---
 build/VStudio/build.version.props | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/build/VStudio/build.version.props b/build/VStudio/build.version.props
index e85358d3..537f1da3 100644
--- a/build/VStudio/build.version.props
+++ b/build/VStudio/build.version.props
@@ -6,7 +6,8 @@
 
         <!-- git revision -->
         <MyGitRoot>$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), .git/HEAD))</MyGitRoot>
-        <MyGitHead>$([System.IO.File]::ReadAllText($(MyGitRoot)/.git/HEAD).Trim())</MyGitHead>
+        <MyGitHead Condition=" Exists('$(MyGitRoot)/.git/HEAD')">$([System.IO.File]::ReadAllText($(MyGitRoot)/.git/HEAD).Trim())</MyGitHead>
+        <MyGitHead Condition="!Exists('$(MyGitRoot)/.git/HEAD')">0000000</MyGitHead>
         <MyGitRevision Condition="$(MyGitHead.StartsWith(ref: )) And  Exists('$(MyGitRoot)/.git/$(MyGitHead.Substring(5))')">$([System.IO.File]::ReadAllText($(MyGitRoot)/.git/$(MyGitHead.Substring(5))).Trim().Substring(0, 7))</MyGitRevision>
         <MyGitRevision Condition="$(MyGitHead.StartsWith(ref: )) And !Exists('$(MyGitRoot)/.git/$(MyGitHead.Substring(5))')">$([System.Text.RegularExpressions.Regex]::Match($([System.IO.File]::ReadAllText($(MyGitRoot)/.git/packed-refs)), '[0-9a-fA-F]{40,}.*$(MyGitHead.Substring(5))').Value.Substring(0, 7))</MyGitRevision>
         <MyGitRevision Condition="!$(MyGitHead.StartsWith(ref: ))">$(MyGitHead.Substring(0, 7))</MyGitRevision>