modern-cmake/chapters/projects/download.md

GoogleTest: Download method

You can use the downloader in my CMake helper repository, using CMake's include command.

This is a downloader for GoogleTest, based on the excellent DownloadProject tool. Downloading a copy for each project is the recommended way to use GoogleTest (so much so, in fact, that they have disabled the automatic CMake install target), so this respects that design decision. This method downloads the project at configure time, so that IDE's correctly find the libraries. Using it is simple:

cmake_minimum_required(VERSION 3.4)
project(MyProject CXX)
list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)

enable_testing() # Must be in main file

include(AddGoogleTest) # Could be in /tests/CMakeLists.txt
add_executable(SimpleTest SimpleTest.cu)
add_gtest(SimpleTest)

Note: add_gtest is just a macro that adds gtest, gmock, and gtest_main, and then runs add_test to create a test with the same name:

target_link_libraries(SimpleTest gtest gmock gtest_main)
add_test(SimpleTest SimpleTest)

Catch