try_compile (
    GCH_SMALL_VECTOR_TEST_HAS_CONSTEXPR
    ${CMAKE_CURRENT_BINARY_DIR}
    SOURCES
      ${CMAKE_CURRENT_LIST_DIR}/main.cpp
    CMAKE_FLAGS
      "-DINCLUDE_DIRECTORIES=${_TEST_INCLUDE_DIRS}"
    COMPILE_DEFINITIONS
      -DGCH_SMALL_VECTOR_TEST_HAS_CONSTEXPR
      -DGCH_SMALL_VECTOR_TEST_FILE=${CMAKE_CURRENT_BINARY_DIR}/test.cpp
    OUTPUT_VARIABLE
      GCH_SMALL_VECTOR_TEST_HAS_CONSTEXPR_OUTPUT
    CXX_STANDARD
      20
    CXX_STANDARD_REQUIRED
      OFF
    CXX_EXTENSIONS
      OFF
  )

file (
      APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
      "Test of GCH_SMALL_VECTOR_TEST_HAS_CONSTEXPR succeeded with the following output:\n"
      "${GCH_SMALL_VECTOR_TEST_HAS_CONSTEXPR_OUTPUT}\n"
    )

file (
      APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
      "Test of GCH_SMALL_VECTOR_TEST_HAS_CONSTEXPR failed with the following output:\n"
      "${GCH_SMALL_VECTOR_TEST_HAS_CONSTEXPR_OUTPUT}\n"
    )