another-take…

google-test.cmake
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			package_declare(gtest EXTERNAL
			DESCRIPTION "Add GTest support for tests"
			SYSTEM AUTO third-party/cmake/gtest.cmake
			EXCLUDE_FROM_ALL
			)

			package_get_option_name(gtest _opt_name)
			if(AKANTU_TESTS)
			set(${_opt_name} ON CACHE BOOL "Add GTest support for tests (forced)" FORCE)
			endif()

			package_add_third_party_script_variable(google-test
			GTEST_VERSION "master")
			package_add_third_party_script_variable(google-test
			GTEST_GIT "https://github.com/google/googletest.git")