From 7019e1c02f678b167e950fb553169e1bb58b7010 Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Sun, 10 Apr 2022 11:09:43 +0200
Subject: [PATCH] Make sure that update-assemblyinfo.ps1 fails if PowerShell >=
 5.0 is not installed.

---
 BuildTools/update-assemblyinfo.ps1                   | 9 +++++++--
 ICSharpCode.Decompiler/ICSharpCode.Decompiler.csproj | 2 +-
 README.md                                            | 1 +
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/BuildTools/update-assemblyinfo.ps1 b/BuildTools/update-assemblyinfo.ps1
index 0b5985a34..b07199c82 100644
--- a/BuildTools/update-assemblyinfo.ps1
+++ b/BuildTools/update-assemblyinfo.ps1
@@ -1,4 +1,9 @@
-$ErrorActionPreference = "Stop"
+if (-not ($PSVersionTable.PSCompatibleVersions -contains "5.0")) {
+    Write-Error "This script requires at least powershell version 5.0!";
+    return 255;
+}
+
+$ErrorActionPreference = "Stop"
 
 $baseCommit = "d779383cb85003d6dabeb976f0845631e07bf463";
 $baseCommitRev = 1;
@@ -98,7 +103,7 @@ try {
     }
 
     if (-not (Test-File "ILSpy.sln")) {
-        Write-Host "Working directory must be the ILSpy repo root!";
+        Write-Error "Working directory must be the ILSpy repo root!";
         return 2;
     }
 
diff --git a/ICSharpCode.Decompiler/ICSharpCode.Decompiler.csproj b/ICSharpCode.Decompiler/ICSharpCode.Decompiler.csproj
index 3b0b7541f..929b2ca55 100644
--- a/ICSharpCode.Decompiler/ICSharpCode.Decompiler.csproj
+++ b/ICSharpCode.Decompiler/ICSharpCode.Decompiler.csproj
@@ -685,7 +685,7 @@
     <Exec ContinueOnError="true" WorkingDirectory=".." Command="$(GitRevParse)" ConsoleToMSBuild="true">
       <Output TaskParameter="ConsoleOutput" PropertyName="CommitHash" />
     </Exec>
-    <Exec WorkingDirectory=".." Command="$(UpdateAssemblyInfo)" Timeout="60000" Condition="'$(CommitHash)'!='$(LastCommitHash)'" />
+    <Exec WorkingDirectory=".." Command="$(UpdateAssemblyInfo)" Timeout="60000" Condition="'$(CommitHash)'!='$(LastCommitHash)'" LogStandardErrorAsError="true" ContinueOnError="false" />
     <WriteLinesToFile Lines="$(CommitHash)" File="@(UpdateAssemblyInfoStamp)" Overwrite="true" Condition="'$(CommitHash)'!='$(LastCommitHash)'" />
     <ReadLinesFromFile ContinueOnError="true" File="..\VERSION">
       <Output TaskParameter="Lines" PropertyName="PackageVersion" />
diff --git a/README.md b/README.md
index 740589e84..faf0df113 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,7 @@ How to build
 
 #### Windows:
 
+- Make sure PowerShell (at least version) 5.0 is installed.
 - Clone the ILSpy repository using git.
 - Execute `git submodule update --init --recursive` to download the ILSpy-Tests submodule (used by some test cases).
 - Install Visual Studio (documented version: 17.1). You can install the necessary components in one of 3 ways: