From 51d4eea7c5241b3b595740626c5925f08a546cd2 Mon Sep 17 00:00:00 2001
From: Jordi Mallach <jordi@debian.org>
Date: Wed, 14 Jun 2023 15:16:01 +0200
Subject: [PATCH] Allow building against system gtest

---
 CMakeLists.txt | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4d72091752..3b9b324fc6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1032,10 +1032,16 @@ include_directories("${PROJECT_BINARY_DIR}/Source/Core")
 # Unit testing.
 #
 if(ENABLE_TESTS)
-  message(STATUS "Using static gtest from Externals")
+  find_package(GTest)
+  if (GTEST_FOUND)
+    message(STATUS "Using the system gtest")
+    include_directories(${GTEST_INCLUDE_DIRS})
+  else()
+    message(STATUS "Using static gtest from Externals")
+    add_subdirectory(Externals/gtest EXCLUDE_FROM_ALL)
+  endif()
   # Force gtest to link the C runtime dynamically on Windows in order to avoid runtime mismatches.
   set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
-  add_subdirectory(Externals/gtest EXCLUDE_FROM_ALL)
 else()
   message(STATUS "Unit tests are disabled")
 endif()