libcxx/test/CMakeLists.txt

add_subdirectory(tools)

# By default, libcxx and libcxxabi share a library directory.
if (NOT LIBCXX_CXX_ABI_LIBRARY_PATH)
  set(LIBCXX_CXX_ABI_LIBRARY_PATH "${LIBCXX_LIBRARY_DIR}" CACHE PATH
      "The path to libc++abi library.")
endif()

set(LIBCXX_EXECUTOR "\\\"${Python3_EXECUTABLE}\\\" ${CMAKE_CURRENT_LIST_DIR}/../utils/run.py" CACHE STRING
    "Executor to use when running tests.")

set(AUTO_GEN_COMMENT "## Autogenerated by libcxx configuration.\n# Do not edit!")
set(SERIALIZED_LIT_PARAMS "# Lit parameters serialized here for llvm-lit to pick them up\n")

macro(serialize_lit_param param value)
  string(APPEND SERIALIZED_LIT_PARAMS "config.${param} = ${value}\n")
endmacro()

if (NOT LIBCXX_ENABLE_EXCEPTIONS)
  serialize_lit_param(enable_exceptions False)
endif()

if (NOT LIBCXX_ENABLE_RTTI)
  serialize_lit_param(enable_rtti False)
endif()

serialize_lit_param(hardening_mode "\"${LIBCXX_HARDENING_MODE}\"")

if (CMAKE_CXX_COMPILER_TARGET)
  serialize_lit_param(target_triple "\"${CMAKE_CXX_COMPILER_TARGET}\"")
else()
  serialize_lit_param(target_triple "\"${LLVM_DEFAULT_TARGET_TRIPLE}\"")
endif()

if (LLVM_USE_SANITIZER)
  serialize_lit_param(use_sanitizer "\"${LLVM_USE_SANITIZER}\"")
endif()

foreach(param IN LISTS LIBCXX_TEST_PARAMS)
  string(REGEX REPLACE "(.+)=(.+)" "\\1" name "${param}")
  string(REGEX REPLACE "(.+)=(.+)" "\\2" value "${param}")
  serialize_lit_param("${name}" "\"${value}\"")
endforeach()

if (NOT DEFINED LIBCXX_TEST_DEPS)
  message(FATAL_ERROR "Expected LIBCXX_TEST_DEPS to be defined")
endif()

if (LIBCXX_INCLUDE_TESTS)
  include(AddLLVM) # for configure_lit_site_cfg and add_lit_testsuite

  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/configs/cmake-bridge.cfg.in"
                 "${CMAKE_CURRENT_BINARY_DIR}/cmake-bridge.cfg"
                 @ONLY)

  configure_lit_site_cfg(
    "${LIBCXX_TEST_CONFIG}"
    ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
    MAIN_CONFIG "${CMAKE_CURRENT_SOURCE_DIR}/lit.cfg.py")

  add_custom_target(cxx-test-depends
    DEPENDS cxx ${LIBCXX_TEST_DEPS}
    COMMENT "Builds dependencies required to run the test suite.")

  add_lit_testsuite(check-cxx
    "Running libcxx tests"
    ${CMAKE_CURRENT_BINARY_DIR}
    DEPENDS cxx-test-depends)

  if(LIBCXX_ENABLE_STD_MODULES)
    # Generates the modules used in the test.
    # Note the test will regenerate this with the proper setting
    # - the right DCMAKE_CXX_STANDARD
    # - the right test compilation flags
    # Since modules depend on these flags there currently is no way to
    # avoid generating these for the tests. The advantage of the
    # pre generation is that less build information needs to be shared
    # in the bridge.
    add_custom_command(
        OUTPUT "${CMAKE_BINARY_DIR}/test/__config_module__/CMakeCache.txt"
        COMMAND
        ${CMAKE_COMMAND}
            "-G${CMAKE_GENERATOR}"
            "-DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}"
            "-B${CMAKE_BINARY_DIR}/test/__config_module__"
            "-H${LIBCXX_GENERATED_MODULE_DIR}"
            "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}"
            "-DCMAKE_CXX_STANDARD=23"
            "-DCMAKE_EXPORT_COMPILE_COMMANDS=ON"
            )
  add_custom_target(generate-test-module-std
      DEPENDS "${CMAKE_BINARY_DIR}/test/__config_module__/CMakeCache.txt"
      COMMENT "Builds generic module std.")
  endif()
endif()

if (LIBCXX_GENERATE_COVERAGE)
  include(CodeCoverage)
  set(output_dir "${CMAKE_CURRENT_BINARY_DIR}/coverage")
  set(capture_dirs
      "${LIBCXX_LIB_CMAKEFILES_DIR}/cxx_objects.dir/"
      "${LIBCXX_LIB_CMAKEFILES_DIR}/cxx.dir/"
      "${LIBCXX_LIB_CMAKEFILES_DIR}/cxx_experimental.dir/"
      "${CMAKE_CURRENT_BINARY_DIR}")
  set(extract_dirs "${LIBCXX_SOURCE_DIR}/include;${LIBCXX_SOURCE_DIR}/src")
  setup_lcov_test_target_coverage("cxx" "${output_dir}" "${capture_dirs}" "${extract_dirs}")
endif()

if (LIBCXX_CONFIGURE_IDE)
  # Create dummy targets for each of the tests in the test suite, this allows
  # IDE's such as CLion to correctly highlight the tests because it knows
  # roughly what include paths/compile flags/macro definitions are needed.
  include_directories(support)
  file(GLOB_RECURSE LIBCXX_TESTS ${CMAKE_CURRENT_SOURCE_DIR}/*.pass.cpp)
  file(GLOB LIBCXX_TEST_HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/support/*)
  file(GLOB_RECURSE LIBCXX_HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/../include/*)
  add_executable(libcxx_test_objects EXCLUDE_FROM_ALL
          ${LIBCXX_TESTS} ${LIBCXX_TEST_HEADERS} ${LIBCXX_HEADERS})
  add_dependencies(libcxx_test_objects cxx)

  split_list(LIBCXX_COMPILE_FLAGS)
  split_list(LIBCXX_LINK_FLAGS)

  set_target_properties(libcxx_test_objects
          PROPERTIES
            COMPILE_FLAGS "${LIBCXX_COMPILE_FLAGS}"
            LINK_FLAGS "${LIBCXX_LINK_FLAGS}"
            EXCLUDE_FROM_ALL ON
  )
endif()