From 4001b11f20ccfc291a355c52a090fa16e2f5a5f1 Mon Sep 17 00:00:00 2001
From: Paul Zander <negril.nx+gentoo@gmail.com>
Date: Mon, 6 Jan 2025 16:13:09 +0100
Subject: [PATCH] system gtest

Signed-off-by: Paul Zander <negril.nx+gentoo@gmail.com>

diff --git a/cmake/flann_utils.cmake b/cmake/flann_utils.cmake
index e02a6ff..544f87a 100644
--- a/cmake/flann_utils.cmake
+++ b/cmake/flann_utils.cmake
@@ -41,6 +41,13 @@ macro(find_hdf5)
 endmacro(find_hdf5)
 
 
+if(BUILD_TESTS)
+enable_testing()
+find_package(GTest)
+if(GTest_FOUND)
+    set(googletest_LIBRARIES GTest::gtest)
+    add_library(googletest ALIAS GTest::gtest)
+else()
 # Enable ExternalProject CMake module
 include(ExternalProject)
 
@@ -69,6 +76,8 @@ set(googletest_INCLUDE_DIRS ${source_dir}/googletest/include)
 ExternalProject_Get_Property(googletest binary_dir)
 set(googletest_LIBRARIES ${binary_dir}/lib/libgtest.a)
 include_directories(${googletest_INCLUDE_DIRS})
+endif()
+endif()
 
 
 macro(flann_add_gtest exe src)
-- 
2.47.1