From bde0bab4cad0cc1cfc72acfe971545b2b5c70a08 Mon Sep 17 00:00:00 2001
From: Larry Ewing <lewing@microsoft.com>
Date: Tue, 4 May 2021 09:13:27 -0500
Subject: [PATCH] [wasm] Don't use EMSDK_PATH in external builds (#52215)

* Don't use EMSDK_PATH in external builds only when in-tree
---
 src/mono/wasm/build/WasmApp.targets | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mono/wasm/build/WasmApp.targets b/src/mono/wasm/build/WasmApp.targets
index a33d0a3ec16bc..0b1be49e159c3 100644
--- a/src/mono/wasm/build/WasmApp.targets
+++ b/src/mono/wasm/build/WasmApp.targets
@@ -74,7 +74,7 @@
     <!--<WasmStripAOTAssemblies Condition="'$(AOTMode)' == 'AotInterp'">false</WasmStripAOTAssemblies>-->
     <!--<WasmStripAOTAssemblies Condition="'$(WasmStripAOTAssemblies)' == ''">$(RunAOTCompilation)</WasmStripAOTAssemblies>-->
     <_ExeExt Condition="$([MSBuild]::IsOSPlatform('WINDOWS'))">.exe</_ExeExt>
-    <WasmUseEMSDK_PATH Condition="'$(WasmUseEMSDK_PATH)' == '' and '$(EMSDK_PATH)' != ''">true</WasmUseEMSDK_PATH>
+    <WasmUseEMSDK_PATH Condition="'$(WasmUseEMSDK_PATH)' == '' and '$(EMSDK_PATH)' != '' and Exists('$(MSBuildThisFileDirectory)WasmApp.InTree.targets')">true</WasmUseEMSDK_PATH>
   </PropertyGroup>
 
   <Import Project="$(MSBuildThisFileDirectory)EmSdkRepo.Defaults.props" Condition="'$(WasmUseEMSDK_PATH)' == 'true'" />