From 5cfcde6ec6126234a46861e84ba52e022149453d Mon Sep 17 00:00:00 2001
From: Bozhidar Batsov <bozhidar@batsov.dev>
Date: Wed, 18 Feb 2026 09:57:28 +0200
Subject: [PATCH] Remove dead BUILDING_WITH_LKG define

The BUILDING_WITH_LKG constant was left behind after #19235 removed all
the #if conditionals that referenced it. It's now defined but never used
anywhere in the source. Remove it from both props files.
---
 Directory.Build.props | 1 -
 FSharp.Profiles.props | 4 ----
 2 files changed, 5 deletions(-)

diff --git a/Directory.Build.props b/Directory.Build.props
index e109e5b71e5..eefda99f4f9 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -59,7 +59,6 @@
          since it's a non-arcade and non-sourcebuild scenario -->
     <FsLexPath>$(ArtifactsDir)/bin/fslex/$(Configuration)/$(FSharpNetCoreProductDefaultTargetFramework)/$(RuntimeIdentifier)/fslex.dll</FsLexPath>
     <FsYaccPath>$(ArtifactsDir)/bin/fsyacc/$(Configuration)/$(FSharpNetCoreProductDefaultTargetFramework)/$(RuntimeIdentifier)/fsyacc.dll</FsYaccPath>
-    <DefineConstants>BUILDING_WITH_LKG;$(DefineConstants)</DefineConstants>
   </PropertyGroup>
 
   <Import Project="$(MSBuildThisFileDirectory)/eng/Versions.props" Condition="'$(DISABLE_ARCADE)' == 'true'" />
diff --git a/FSharp.Profiles.props b/FSharp.Profiles.props
index aa25fe20055..73bc9524b1e 100644
--- a/FSharp.Profiles.props
+++ b/FSharp.Profiles.props
@@ -2,10 +2,6 @@
 <!-- Copyright (c) Microsoft Corporation.  All Rights Reserved.  See License.txt in the project root for license information. -->
 <Project>
 
-  <PropertyGroup Condition="'$(Configuration)' == 'Proto'">
-    <DefineConstants>BUILDING_WITH_LKG;$(DefineConstants)</DefineConstants>
-  </PropertyGroup>
-
   <PropertyGroup Condition="'$(MSBuildProjectExtension)' == '.fsproj' and $(TolerateUnusedBindings) != 'true'">
     <WarningsAsErrors>1182;$(WarningsAsErrors)</WarningsAsErrors>
     <WarnOn>1182;3879;$(WarnOn)</WarnOn>