From 4700e483e09eb243251cd0bb9f0559f89237b41f Mon Sep 17 00:00:00 2001
From: Tom Tan <Tom.Tan@microsoft.com>
Date: Fri, 9 Feb 2024 16:01:05 -0800
Subject: [PATCH] Don't invoke vcpkg from this repo with CMAKE_TOOLCHAIN_FILE
 set (#2527)

---
 CMakeLists.txt | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6fa071f353..48f2072667 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -573,9 +573,16 @@ if(BUILD_TESTING)
     # Make sure we are always bootsrapped with vcpkg on Windows
     find_package(GTest)
     if(NOT (GTEST_FOUND OR GTest_FOUND))
-      install_windows_deps()
-      include(${CMAKE_TOOLCHAIN_FILE})
-      find_package(GTest REQUIRED)
+      if(DEFINED CMAKE_TOOLCHAIN_FILE)
+        message(
+          FATAL_ERROR
+            "Pleaes install GTest with the CMAKE_TOOLCHAIN_FILE at ${CMAKE_TOOLCHAIN_FILE}"
+        )
+      else()
+        install_windows_deps()
+        include(${CMAKE_TOOLCHAIN_FILE})
+        find_package(GTest REQUIRED)
+      endif()
     endif()
   else()
     # Prefer GTest installed by OS distro, brew or vcpkg package manager