# Download and unpack googletest at configure time
configure_file(cmake/GoogleBenchmark.cmake.in
               google-benchmark-download/CMakeLists.txt)

execute_process(
  COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
  RESULT_VARIABLE result
  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/google-benchmark-download)

if(result)
  message(FATAL_ERROR "CMake step for google-benchmark failed: ${result}")
endif()

execute_process(
  COMMAND ${CMAKE_COMMAND} --build .
  RESULT_VARIABLE result
  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/google-benchmark-download)

if(result)
  message(FATAL_ERROR "Build step for google-benchmark failed: ${result}")
endif()

set(BENCHMARK_ENABLE_TESTING OFF)

# Add google-benchmark directly to our build. This defines the benchmark and
# benchmark_main targets.
add_subdirectory(
  ${CMAKE_CURRENT_BINARY_DIR}/google-benchmark-src
  ${CMAKE_CURRENT_BINARY_DIR}/google-benchmark-build EXCLUDE_FROM_ALL)
