From eb1721fd7200deb6db6dbefff3d15236314d05fa Mon Sep 17 00:00:00 2001
From: patchzyy <64382339+patchzyy@users.noreply.github.com>
Date: Fri, 28 Aug 2026 20:45:46 +0200
Subject: [PATCH] Update NativeBuildFlags.ps1

---
 Launcher/NativeBuildFlags.ps1 | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Launcher/NativeBuildFlags.ps1 b/Launcher/NativeBuildFlags.ps1
index 50825f0..5402643 100644
--- a/Launcher/NativeBuildFlags.ps1
+++ b/Launcher/NativeBuildFlags.ps1
@@ -42,7 +42,9 @@ function Get-MkwToolchainPath([string]$ToolchainRoot) {
 
 function Get-MkwShellSafeToolchainRoot([string]$ToolchainRoot) {
     if ([string]::IsNullOrWhiteSpace($ToolchainRoot)) { throw 'A toolchain root is required.' }
-    $full = [IO.Path]::GetFullPath($ToolchainRoot).TrimEnd('\')
+    $full = [IO.Path]::GetFullPath($ToolchainRoot)
+    # A drive root keeps its separator: "C:" is relative to the current directory on that drive.
+    if ($full -ne [IO.Path]::GetPathRoot($full)) { $full = $full.TrimEnd('\') }
     if ($full -notmatch '[()&^%!]') { return $full }
 
     $sha = [Security.Cryptography.SHA256]::Create()