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# Integrates googletest at configure time. Based on the instructions at
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# https://github.com/google/googletest/tree/master/googletest#incorporating-into-an-existing-cmake-project
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# Set up the external googletest project, downloading the latest from Github
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# master if requested.
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configure_file(
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${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt.in
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${CMAKE_BINARY_DIR}/googletest-external/CMakeLists.txt
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)
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set(ABSL_SAVE_CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
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set(ABSL_SAVE_CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
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if (BUILD_SHARED_LIBS)
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DGTEST_CREATE_SHARED_LIBRARY=1")
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endif()
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# Configure and build the googletest source.
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execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
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RESULT_VARIABLE result
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WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-external )
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if(result)
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message(FATAL_ERROR "CMake step for googletest failed: ${result}")
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endif()
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execute_process(COMMAND ${CMAKE_COMMAND} --build .
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RESULT_VARIABLE result
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WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-external)
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if(result)
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message(FATAL_ERROR "Build step for googletest failed: ${result}")
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endif()
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set(CMAKE_CXX_FLAGS ${ABSL_SAVE_CMAKE_CXX_FLAGS})
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${ABSL_SAVE_CMAKE_RUNTIME_OUTPUT_DIRECTORY})
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# Prevent overriding the parent project's compiler/linker settings on Windows
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set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
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# Add googletest directly to our build. This defines the gtest and gtest_main
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# targets.
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add_subdirectory(${absl_gtest_src_dir} ${absl_gtest_build_dir} EXCLUDE_FROM_ALL)
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