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llvm/libcxx/test/CMakeLists.txt
Louis Dionne f3966eaf86 [libc++] Make the Debug mode a configuration-time only option 
The debug mode has been broken pretty much ever since it was shipped
because it was possible to enable the debug mode in user code without
actually enabling it in the dylib, leading to ODR violations that
caused various kinds of failures.

This commit makes the debug mode a knob that is configured when
building the library and which can't be changed afterwards. This is
less flexible for users, however it will actually work as intended
and it will allow us, in the future, to add various kinds of checks
that do not assume the same ABI as the normal library. Furthermore,
this will make the debug mode more robust, which means that vendors
might be more tempted to support it properly, which hasn't been the
case with the current debug mode.

This patch shouldn't break any user code, except folks who are building
against a library that doesn't have the debug mode enabled and who try
to enable the debug mode in their code. Such users will get a compile-time
error explaining that this configuration isn't supported anymore.

In the future, we should further increase the granularity of the debug
mode checks so that we can cherry-pick which checks to enable, like we
do for unspecified behavior randomization.

Differential Revision: https://reviews.llvm.org/D122941
2022-06-07 16:33:53 -04:00

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CMake
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macro(pythonize_bool var)
if (${var})
set(${var} True)
else()
set(${var} False)
endif()
endmacro()
set(LIBCXX_LIT_VARIANT "libcxx" CACHE STRING
"Configuration variant to use for LIT.")
set(LIBCXX_TEST_LINKER_FLAGS "" CACHE STRING
"Additonal linker flags to pass when compiling the tests")
set(LIBCXX_TEST_COMPILER_FLAGS "" CACHE STRING
"Additonal linker flags to pass when compiling the tests")
# The tests shouldn't link to any ABI library when it has been linked into
# libc++ statically or via a linker script.
if (LIBCXX_ENABLE_STATIC_ABI_LIBRARY OR LIBCXX_ENABLE_ABI_LINKER_SCRIPT)
set(LIBCXX_CXXABI_FOR_TESTS "none")
else()
set(LIBCXX_CXXABI_FOR_TESTS "${LIBCXX_CXX_ABI}")
endif()
# The tests shouldn't link to libunwind if we have a linker script which
# already does so.
if (LIBCXX_ENABLE_ABI_LINKER_SCRIPT)
set(LIBCXXABI_USE_LLVM_UNWINDER OFF)
endif()
# TODO: Clients using those options should switch to from-scratch Lit configuration files.
option(LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXXABI
"Whether the libc++ tests should link with the shared libc++abi library"
${LIBCXXABI_ENABLE_SHARED})
option(LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXX
"Whether the libc++ tests should link with the shared libc++ library"
${LIBCXX_ENABLE_SHARED})
if(DEFINED LIBCXXABI_ENABLE_SHARED
AND LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXXABI
AND NOT LIBCXXABI_ENABLE_SHARED)
message(FATAL_ERROR "LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXXABI being ON requires LIBCXXABI_ENABLE_SHARED to be ON")
endif()
if(DEFINED LIBCXXABI_ENABLE_STATIC
AND NOT LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXXABI
AND NOT LIBCXXABI_ENABLE_STATIC)
message(FATAL_ERROR "LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXXABI being OFF requires LIBCXXABI_ENABLE_STATIC to be ON")
endif()
if(LIBCXX_INCLUDE_TESTS AND LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXX AND NOT LIBCXX_ENABLE_SHARED)
message(FATAL_ERROR "LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXX being ON requires LIBCXX_ENABLE_SHARED to be ON")
endif()
if(LIBCXX_INCLUDE_TESTS AND NOT LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXX AND NOT LIBCXX_ENABLE_STATIC)
message(FATAL_ERROR "LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXX being OFF requires LIBCXX_ENABLE_STATIC to be ON")
endif()
pythonize_bool(LIBCXX_ENABLE_SHARED)
pythonize_bool(LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXX)
pythonize_bool(LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXXABI)
pythonize_bool(LIBCXX_ENABLE_FILESYSTEM)
pythonize_bool(LIBCXX_GENERATE_COVERAGE)
pythonize_bool(LIBCXXABI_ENABLE_SHARED)
pythonize_bool(LIBCXXABI_USE_LLVM_UNWINDER)
pythonize_bool(LIBCXX_USE_COMPILER_RT)
pythonize_bool(LIBCXX_HAS_ATOMIC_LIB)
pythonize_bool(LIBCXX_HAVE_CXX_ATOMICS_WITH_LIB)
pythonize_bool(LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
pythonize_bool(LIBCXX_DEBUG_BUILD)
pythonize_bool(LIBCXX_ENABLE_PARALLEL_ALGORITHMS)
# By default, libcxx and libcxxabi share a library directory.
if (NOT LIBCXX_CXX_ABI_LIBRARY_PATH)
set(LIBCXX_CXX_ABI_LIBRARY_PATH "${LIBCXX_LIBRARY_DIR}" CACHE PATH
"The path to libc++abi library.")
endif()
set(LIBCXX_TARGET_INFO "libcxx.test.target_info.LocalTI" CACHE STRING
"TargetInfo to use when setting up test environment.")
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} = ${value}\n")
endmacro()
if (NOT LIBCXX_ENABLE_EXCEPTIONS)
serialize_lit_param(enable_exceptions False)
endif()
if (NOT LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY)
serialize_lit_param(enable_experimental False)
endif()
if (NOT LIBCXX_ENABLE_RTTI)
serialize_lit_param(enable_rtti False)
endif()
if (LIBCXX_ENABLE_ASSERTIONS)
serialize_lit_param(enable_assertions True)
endif()
if (CMAKE_CXX_COMPILER_TARGET)
serialize_lit_param(target_triple "\"${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"
${CMAKE_CURRENT_BINARY_DIR}
DEPENDS cxx-test-depends)
endif()
if (LIBCXX_GENERATE_COVERAGE)
include(CodeCoverage)
set(output_dir "${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()
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