mirror of
https://github.com/capstone-engine/llvm-capstone.git
synced 2024-12-13 02:21:45 +00:00
1939eb3dc2
Back in 2020 [1], we went very close to enabling Filesystem on MSVC by disabling int128_t, but decided to wait because MSVC support for int128_t was supposed to come shortly after. Since it's not there yet, I propose turning off int128_t support by default on MSVC. This will make <filesystem> available by default on MSVC, and most importantly will open the possibility for changing LIBCXX_ENABLE_FILESYSTEM to mean "the system doesn't have support for a filesystem" instead of simply "don't build the std::filesystem library", which is what I'm really after with this change. In a way, this is a resurection of D91139. [1]: https://reviews.llvm.org/D91139#2429595 Differential Revision: https://reviews.llvm.org/D134912
882 lines
40 KiB
CMake
882 lines
40 KiB
CMake
# See https://libcxx.llvm.org/docs/BuildingLibcxx.html for instructions on how
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# to build libcxx with CMake.
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#===============================================================================
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# Setup Project
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#===============================================================================
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cmake_minimum_required(VERSION 3.20.0)
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set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
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# Add path for custom modules
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list(INSERT CMAKE_MODULE_PATH 0
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
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"${CMAKE_CURRENT_SOURCE_DIR}/../runtimes/cmake/Modules"
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"${LLVM_COMMON_CMAKE_UTILS}"
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"${LLVM_COMMON_CMAKE_UTILS}/Modules"
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)
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set(CMAKE_FOLDER "libc++")
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set(LIBCXX_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
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set(LIBCXX_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
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set(LIBCXX_BINARY_INCLUDE_DIR "${LIBCXX_BINARY_DIR}/include/c++build")
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include(GNUInstallDirs)
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include(WarningFlags)
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# Require out of source build.
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include(MacroEnsureOutOfSourceBuild)
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MACRO_ENSURE_OUT_OF_SOURCE_BUILD(
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"${PROJECT_NAME} requires an out of source build. Please create a separate
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build directory and run 'cmake /path/to/${PROJECT_NAME} [options]' there."
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)
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if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" AND "${CMAKE_CXX_SIMULATE_ID}" STREQUAL "MSVC")
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message(STATUS "Configuring for clang-cl")
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set(LIBCXX_TARGETING_CLANG_CL ON)
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endif()
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if (MSVC)
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set(LIBCXX_TARGETING_MSVC ON)
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message(STATUS "Configuring for MSVC")
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else()
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set(LIBCXX_TARGETING_MSVC OFF)
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endif()
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#===============================================================================
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# Setup CMake Options
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#===============================================================================
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include(CMakeDependentOption)
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include(HandleCompilerRT)
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# Basic options ---------------------------------------------------------------
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option(LIBCXX_ENABLE_ASSERTIONS
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"Enable assertions inside the compiled library, and at the same time make it the
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default when compiling user code. Note that assertions can be enabled or disabled
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by users in their own code regardless of this option." OFF)
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option(LIBCXX_ENABLE_SHARED "Build libc++ as a shared library." ON)
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option(LIBCXX_ENABLE_STATIC "Build libc++ as a static library." ON)
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option(LIBCXX_ENABLE_FILESYSTEM "Build filesystem as part of the main libc++ library" ON)
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option(LIBCXX_INCLUDE_TESTS "Build the libc++ tests." ${LLVM_INCLUDE_TESTS})
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option(LIBCXX_ENABLE_DEBUG_MODE
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"Whether to build libc++ with the debug mode enabled.
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By default, this is turned off. Turning it on results in a different ABI (additional
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symbols but also potentially different layouts of types), and one should not mix code
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built against a dylib that has debug mode and code built against a regular dylib." OFF)
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option(LIBCXX_ENABLE_RANDOM_DEVICE
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"Whether to include support for std::random_device in the library. Disabling
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this can be useful when building the library for platforms that don't have
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a source of randomness, such as some embedded platforms. When this is not
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supported, most of <random> will still be available, but std::random_device
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will not." ON)
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option(LIBCXX_ENABLE_LOCALIZATION
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"Whether to include support for localization in the library. Disabling
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localization can be useful when porting to platforms that don't support
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the C locale API (e.g. embedded). When localization is not supported,
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several parts of the library will be disabled: <iostream>, <regex>, <locale>
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will be completely unusable, and other parts may be only partly available." ON)
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option(LIBCXX_ENABLE_FSTREAM
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"Whether to include support for <fstream>." ON) # TODO: Consider rolling that into LIBCXX_ENABLE_FILESYSTEM
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option(LIBCXX_ENABLE_UNICODE
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"Whether to include support for Unicode in the library. Disabling Unicode can
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be useful when porting to platforms that don't support UTF-8 encoding (e.g.
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embedded)." ON)
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option(LIBCXX_ENABLE_WIDE_CHARACTERS
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"Whether to include support for wide characters in the library. Disabling
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wide character support can be useful when porting to platforms that don't
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support the C functionality for wide characters. When wide characters are
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not supported, several parts of the library will be disabled, notably the
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wide character specializations of std::basic_string." ON)
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option(LIBCXX_ENABLE_VENDOR_AVAILABILITY_ANNOTATIONS
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"Whether to turn on vendor availability annotations on declarations that depend
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on definitions in a shared library. By default, we assume that we're not building
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libc++ for any specific vendor, and we disable those annotations. Vendors wishing
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to provide compile-time errors when using features unavailable on some version of
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the shared library they shipped should turn this on and see `include/__availability`
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for more details." OFF)
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option(LIBCXX_ENABLE_CLANG_TIDY "Whether to compile and run clang-tidy checks" OFF)
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if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-shared-gcc.cfg.in")
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elseif(MINGW)
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set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-mingw.cfg.in")
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elseif(WIN32) # clang-cl
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if (LIBCXX_ENABLE_SHARED)
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set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-shared-clangcl.cfg.in")
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else()
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set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-static-clangcl.cfg.in")
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endif()
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else()
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if (LIBCXX_ENABLE_SHARED)
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set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-shared.cfg.in")
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else()
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set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-static.cfg.in")
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endif()
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endif()
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set(LIBCXX_TEST_CONFIG "${LIBCXX_DEFAULT_TEST_CONFIG}" CACHE STRING
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"The path to the Lit testing configuration to use when running the tests.
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If a relative path is provided, it is assumed to be relative to '<monorepo>/libcxx/test/configs'.")
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if (NOT IS_ABSOLUTE "${LIBCXX_TEST_CONFIG}")
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set(LIBCXX_TEST_CONFIG "${CMAKE_CURRENT_SOURCE_DIR}/test/configs/${LIBCXX_TEST_CONFIG}")
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endif()
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message(STATUS "Using libc++ testing configuration: ${LIBCXX_TEST_CONFIG}")
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set(LIBCXX_TEST_PARAMS "" CACHE STRING
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"A list of parameters to run the Lit test suite with.")
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# Benchmark options -----------------------------------------------------------
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option(LIBCXX_INCLUDE_BENCHMARKS "Build the libc++ benchmarks and their dependencies" ON)
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set(LIBCXX_BENCHMARK_TEST_ARGS_DEFAULT --benchmark_min_time=0.01)
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set(LIBCXX_BENCHMARK_TEST_ARGS "${LIBCXX_BENCHMARK_TEST_ARGS_DEFAULT}" CACHE STRING
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"Arguments to pass when running the benchmarks using check-cxx-benchmarks")
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set(LIBCXX_BENCHMARK_NATIVE_STDLIB "" CACHE STRING
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"Build the benchmarks against the specified native STL.
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The value must be one of libc++/libstdc++")
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set(LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN "" CACHE STRING
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"Use alternate GCC toolchain when building the native benchmarks")
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if (LIBCXX_BENCHMARK_NATIVE_STDLIB)
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if (NOT (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libc++"
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OR LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++"))
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message(FATAL_ERROR "Invalid value for LIBCXX_BENCHMARK_NATIVE_STDLIB: "
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"'${LIBCXX_BENCHMARK_NATIVE_STDLIB}'")
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endif()
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endif()
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option(LIBCXX_INCLUDE_DOCS "Build the libc++ documentation." ${LLVM_INCLUDE_DOCS})
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set(LIBCXX_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}" CACHE STRING
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"Define suffix of library directory name (32/64)")
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option(LIBCXX_INSTALL_HEADERS "Install the libc++ headers." ON)
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option(LIBCXX_INSTALL_LIBRARY "Install the libc++ library." ON)
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cmake_dependent_option(LIBCXX_INSTALL_STATIC_LIBRARY
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"Install the static libc++ library." ON
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"LIBCXX_ENABLE_STATIC;LIBCXX_INSTALL_LIBRARY" OFF)
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cmake_dependent_option(LIBCXX_INSTALL_SHARED_LIBRARY
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"Install the shared libc++ library." ON
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"LIBCXX_ENABLE_SHARED;LIBCXX_INSTALL_LIBRARY" OFF)
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option(LIBCXX_ABI_UNSTABLE "Use the unstable ABI of libc++. This is equivalent to specifying LIBCXX_ABI_VERSION=n, where n is the not-yet-stable version." OFF)
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if (LIBCXX_ABI_UNSTABLE)
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set(abi_version "2")
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else()
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set(abi_version "1")
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endif()
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set(LIBCXX_ABI_VERSION "${abi_version}" CACHE STRING
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"ABI version of libc++. Can be either 1 or 2, where 2 is currently the unstable ABI.
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Defaults to 1 unless LIBCXX_ABI_UNSTABLE is specified, in which case this is 2.")
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set(LIBCXX_LIBRARY_VERSION "${LIBCXX_ABI_VERSION}.0" CACHE STRING
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"Version of libc++. This will be reflected in the name of the shared library produced.
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For example, -DLIBCXX_LIBRARY_VERSION=x.y will result in the library being named
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libc++.x.y.dylib, along with the usual symlinks pointing to that. On Apple platforms,
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this also controls the linker's 'current_version' property.")
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set(LIBCXX_ABI_NAMESPACE "__${LIBCXX_ABI_VERSION}" CACHE STRING "The inline ABI namespace used by libc++. It defaults to __n where `n` is the current ABI version.")
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if (NOT LIBCXX_ABI_NAMESPACE MATCHES "__.*")
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message(FATAL_ERROR "LIBCXX_ABI_NAMESPACE must be a reserved identifier, got '${LIBCXX_ABI_NAMESPACE}'.")
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endif()
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option(LIBCXX_ABI_FORCE_ITANIUM "Ignore auto-detection and force use of the Itanium ABI.")
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option(LIBCXX_ABI_FORCE_MICROSOFT "Ignore auto-detection and force use of the Microsoft ABI.")
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set(LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION "default" CACHE STRING
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"Override the implementation to use for comparing typeinfos. By default, this
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is detected automatically by the library, but this option allows overriding
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which implementation is used unconditionally.
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See the documentation in <libcxx/include/typeinfo> for details on what each
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value means.")
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set(TYPEINFO_COMPARISON_VALUES "default;1;2;3")
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if (NOT ("${LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION}" IN_LIST TYPEINFO_COMPARISON_VALUES))
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message(FATAL_ERROR "Value '${LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION}' is not a valid value for
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LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION")
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endif()
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set(LIBCXX_ABI_DEFINES "" CACHE STRING "A semicolon separated list of ABI macros to define in the site config header.")
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option(LIBCXX_EXTRA_SITE_DEFINES "Extra defines to add into __config_site")
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option(LIBCXX_USE_COMPILER_RT "Use compiler-rt instead of libgcc" OFF)
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option(LIBCXX_ENABLE_BACKWARDS_COMPATIBILITY_DEBUG_MODE_SYMBOLS
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"Whether to include the old Debug mode symbols in the compiled library. This
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is provided for backwards compatibility since the compiled library used to
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always contain those symbols, regardless of whether the library was built
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with the debug mode enabled. This is OFF by default, please contact the libc++
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developers if you need to turn this on, as this will be removed in LLVM 16." OFF)
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# ABI Library options ---------------------------------------------------------
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if (LIBCXX_TARGETING_MSVC)
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set(LIBCXX_DEFAULT_ABI_LIBRARY "vcruntime")
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elseif (${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
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set(LIBCXX_DEFAULT_ABI_LIBRARY "libcxxrt")
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else()
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set(LIBCXX_DEFAULT_ABI_LIBRARY "libcxxabi")
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endif()
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set(LIBCXX_SUPPORTED_ABI_LIBRARIES none libcxxabi system-libcxxabi libcxxrt libstdc++ libsupc++ vcruntime)
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set(LIBCXX_CXX_ABI "${LIBCXX_DEFAULT_ABI_LIBRARY}" CACHE STRING "Specify C++ ABI library to use. Supported values are ${LIBCXX_SUPPORTED_ABI_LIBRARIES}.")
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if (NOT "${LIBCXX_CXX_ABI}" IN_LIST LIBCXX_SUPPORTED_ABI_LIBRARIES)
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message(FATAL_ERROR "Unsupported C++ ABI library: '${LIBCXX_CXX_ABI}'. Supported values are ${LIBCXX_SUPPORTED_ABI_LIBRARIES}.")
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endif()
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option(LIBCXX_ENABLE_STATIC_ABI_LIBRARY
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"Use a static copy of the ABI library when linking libc++.
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This option cannot be used with LIBCXX_ENABLE_ABI_LINKER_SCRIPT." OFF)
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option(LIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY
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"Statically link the ABI library to static library"
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${LIBCXX_ENABLE_STATIC_ABI_LIBRARY})
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option(LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY
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"Statically link the ABI library to shared library"
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${LIBCXX_ENABLE_STATIC_ABI_LIBRARY})
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# Generate and install a linker script inplace of libc++.so. The linker script
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# will link libc++ to the correct ABI library. This option is on by default
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# on UNIX platforms other than Apple unless
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# 'LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY' is on. This option is also
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# disabled when the ABI library is not specified or is specified to be "none".
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set(ENABLE_LINKER_SCRIPT_DEFAULT_VALUE OFF)
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if (LLVM_HAVE_LINK_VERSION_SCRIPT AND NOT LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY
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AND NOT LIBCXX_CXX_ABI STREQUAL "none"
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AND Python3_EXECUTABLE
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AND LIBCXX_ENABLE_SHARED)
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set(ENABLE_LINKER_SCRIPT_DEFAULT_VALUE ON)
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endif()
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option(LIBCXX_ENABLE_ABI_LINKER_SCRIPT
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"Use and install a linker script for the given ABI library"
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${ENABLE_LINKER_SCRIPT_DEFAULT_VALUE})
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option(LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS
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"Build libc++ with definitions for operator new/delete. These are normally
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defined in libc++abi, but this option can be used to define them in libc++
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instead. If you define them in libc++, make sure they are NOT defined in
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libc++abi. Doing otherwise is an ODR violation." OFF)
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# Build libc++abi with libunwind. We need this option to determine whether to
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# link with libunwind or libgcc_s while running the test cases.
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option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF)
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# Target options --------------------------------------------------------------
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option(LIBCXX_BUILD_32_BITS "Build 32 bit multilib libc++. This option is not supported anymore when building the runtimes. Please specify a full triple instead." ${LLVM_BUILD_32_BITS})
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if (LIBCXX_BUILD_32_BITS)
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message(FATAL_ERROR "LIBCXX_BUILD_32_BITS is not supported anymore when building the runtimes, please specify a full triple instead.")
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endif()
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# Feature options -------------------------------------------------------------
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option(LIBCXX_ENABLE_EXCEPTIONS "Use exceptions." ON)
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option(LIBCXX_ENABLE_RTTI "Use run time type information." ON)
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option(LIBCXX_ENABLE_THREADS "Build libc++ with support for threads." ON)
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option(LIBCXX_ENABLE_MONOTONIC_CLOCK
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"Build libc++ with support for a monotonic clock.
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This option may only be set to OFF when LIBCXX_ENABLE_THREADS=OFF." ON)
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option(LIBCXX_HAS_MUSL_LIBC "Build libc++ with support for the Musl C library" OFF)
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option(LIBCXX_HAS_PTHREAD_API "Ignore auto-detection and force use of pthread API" OFF)
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option(LIBCXX_HAS_WIN32_THREAD_API "Ignore auto-detection and force use of win32 thread API" OFF)
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option(LIBCXX_HAS_EXTERNAL_THREAD_API
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"Build libc++ with an externalized threading API.
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This option may only be set to ON when LIBCXX_ENABLE_THREADS=ON." OFF)
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option(LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY
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"Build libc++ with an externalized threading library.
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This option may only be set to ON when LIBCXX_ENABLE_THREADS=ON" OFF)
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if (LIBCXX_ENABLE_THREADS)
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set(LIBCXX_PSTL_CPU_BACKEND "std_thread" CACHE STRING "Which PSTL CPU backend to use")
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else()
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set(LIBCXX_PSTL_CPU_BACKEND "serial" CACHE STRING "Which PSTL CPU backend to use")
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endif()
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# Misc options ----------------------------------------------------------------
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# FIXME: Turn -pedantic back ON. It is currently off because it warns
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# about #include_next which is used everywhere.
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option(LIBCXX_ENABLE_PEDANTIC "Compile with pedantic enabled." OFF)
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option(LIBCXX_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
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option(LIBCXX_DISABLE_MACRO_CONFLICT_WARNINGS "Disable #warnings about conflicting macros." OFF)
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option(LIBCXX_GENERATE_COVERAGE "Enable generating code coverage." OFF)
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set(LIBCXX_COVERAGE_LIBRARY "" CACHE STRING
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"The Profile-rt library used to build with code coverage")
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set(LIBCXX_CONFIGURE_IDE_DEFAULT OFF)
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if (XCODE OR MSVC_IDE)
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set(LIBCXX_CONFIGURE_IDE_DEFAULT ON)
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endif()
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option(LIBCXX_CONFIGURE_IDE "Configure libcxx for use within an IDE"
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${LIBCXX_CONFIGURE_IDE_DEFAULT})
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set(LIBCXX_HERMETIC_STATIC_LIBRARY_DEFAULT OFF)
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if (WIN32)
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set(LIBCXX_HERMETIC_STATIC_LIBRARY_DEFAULT ON)
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endif()
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option(LIBCXX_HERMETIC_STATIC_LIBRARY
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"Do not export any symbols from the static library." ${LIBCXX_HERMETIC_STATIC_LIBRARY_DEFAULT})
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#===============================================================================
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# Check option configurations
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#===============================================================================
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# Ensure LIBCXX_ENABLE_MONOTONIC_CLOCK is set to ON only when
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# LIBCXX_ENABLE_THREADS is on.
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if(LIBCXX_ENABLE_THREADS AND NOT LIBCXX_ENABLE_MONOTONIC_CLOCK)
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message(FATAL_ERROR "LIBCXX_ENABLE_MONOTONIC_CLOCK can only be set to OFF"
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" when LIBCXX_ENABLE_THREADS is also set to OFF.")
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endif()
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if(NOT LIBCXX_ENABLE_THREADS)
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if(LIBCXX_HAS_PTHREAD_API)
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message(FATAL_ERROR "LIBCXX_HAS_PTHREAD_API can only be set to ON"
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" when LIBCXX_ENABLE_THREADS is also set to ON.")
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endif()
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if(LIBCXX_HAS_EXTERNAL_THREAD_API)
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message(FATAL_ERROR "LIBCXX_HAS_EXTERNAL_THREAD_API can only be set to ON"
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" when LIBCXX_ENABLE_THREADS is also set to ON.")
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endif()
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if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
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message(FATAL_ERROR "LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY can only be set "
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"to ON when LIBCXX_ENABLE_THREADS is also set to ON.")
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endif()
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if (LIBCXX_HAS_WIN32_THREAD_API)
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message(FATAL_ERROR "LIBCXX_HAS_WIN32_THREAD_API can only be set to ON"
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" when LIBCXX_ENABLE_THREADS is also set to ON.")
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endif()
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endif()
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if (LIBCXX_HAS_EXTERNAL_THREAD_API)
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if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
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message(FATAL_ERROR "The options LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY and "
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"LIBCXX_HAS_EXTERNAL_THREAD_API cannot both be ON at "
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"the same time")
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endif()
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if (LIBCXX_HAS_PTHREAD_API)
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message(FATAL_ERROR "The options LIBCXX_HAS_EXTERNAL_THREAD_API"
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"and LIBCXX_HAS_PTHREAD_API cannot be both"
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"set to ON at the same time.")
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endif()
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if (LIBCXX_HAS_WIN32_THREAD_API)
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message(FATAL_ERROR "The options LIBCXX_HAS_EXTERNAL_THREAD_API"
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"and LIBCXX_HAS_WIN32_THREAD_API cannot be both"
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"set to ON at the same time.")
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endif()
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endif()
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if (LIBCXX_HAS_PTHREAD_API)
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if (LIBCXX_HAS_WIN32_THREAD_API)
|
|
message(FATAL_ERROR "The options LIBCXX_HAS_PTHREAD_API"
|
|
"and LIBCXX_HAS_WIN32_THREAD_API cannot be both"
|
|
"set to ON at the same time.")
|
|
endif()
|
|
endif()
|
|
|
|
# Ensure LLVM_USE_SANITIZER is not specified when LIBCXX_GENERATE_COVERAGE
|
|
# is ON.
|
|
if (LLVM_USE_SANITIZER AND LIBCXX_GENERATE_COVERAGE)
|
|
message(FATAL_ERROR "LLVM_USE_SANITIZER cannot be used with LIBCXX_GENERATE_COVERAGE")
|
|
endif()
|
|
|
|
if (LIBCXX_ENABLE_ABI_LINKER_SCRIPT)
|
|
if (APPLE)
|
|
message(FATAL_ERROR "LIBCXX_ENABLE_ABI_LINKER_SCRIPT cannot be used on APPLE targets")
|
|
endif()
|
|
if (NOT LIBCXX_ENABLE_SHARED)
|
|
message(FATAL_ERROR "LIBCXX_ENABLE_ABI_LINKER_SCRIPT is only available for shared library builds.")
|
|
endif()
|
|
endif()
|
|
|
|
if (LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY AND LIBCXX_ENABLE_ABI_LINKER_SCRIPT)
|
|
message(FATAL_ERROR "Conflicting options given.
|
|
LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY cannot be specified with
|
|
LIBCXX_ENABLE_ABI_LINKER_SCRIPT")
|
|
endif()
|
|
|
|
if (LIBCXX_ABI_FORCE_ITANIUM AND LIBCXX_ABI_FORCE_MICROSOFT)
|
|
message(FATAL_ERROR "Only one of LIBCXX_ABI_FORCE_ITANIUM and LIBCXX_ABI_FORCE_MICROSOFT can be specified.")
|
|
endif ()
|
|
|
|
#===============================================================================
|
|
# Configure System
|
|
#===============================================================================
|
|
|
|
# TODO: Projects that depend on libc++ should use LIBCXX_GENERATED_INCLUDE_DIR
|
|
# instead of hard-coding include/c++/v1.
|
|
|
|
set(LIBCXX_INSTALL_INCLUDE_DIR "${CMAKE_INSTALL_INCLUDEDIR}/c++/v1" CACHE PATH
|
|
"Path where target-agnostic libc++ headers should be installed.")
|
|
set(LIBCXX_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
|
|
"Path where built libc++ runtime libraries should be installed.")
|
|
|
|
set(LIBCXX_SHARED_OUTPUT_NAME "c++" CACHE STRING "Output name for the shared libc++ runtime library.")
|
|
set(LIBCXX_STATIC_OUTPUT_NAME "c++" CACHE STRING "Output name for the static libc++ runtime library.")
|
|
|
|
if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
|
|
set(LIBCXX_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE})
|
|
set(LIBCXX_GENERATED_INCLUDE_DIR "${LLVM_BINARY_DIR}/include/c++/v1")
|
|
set(LIBCXX_GENERATED_INCLUDE_TARGET_DIR "${LLVM_BINARY_DIR}/include/${LLVM_DEFAULT_TARGET_TRIPLE}/c++/v1")
|
|
set(LIBCXX_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE PATH
|
|
"Path where built libc++ libraries should be installed.")
|
|
set(LIBCXX_INSTALL_INCLUDE_TARGET_DIR "${CMAKE_INSTALL_INCLUDEDIR}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++/v1" CACHE PATH
|
|
"Path where target-specific libc++ headers should be installed.")
|
|
if(LIBCXX_LIBDIR_SUBDIR)
|
|
string(APPEND LIBCXX_LIBRARY_DIR /${LIBCXX_LIBDIR_SUBDIR})
|
|
string(APPEND LIBCXX_INSTALL_LIBRARY_DIR /${LIBCXX_LIBDIR_SUBDIR})
|
|
endif()
|
|
else()
|
|
if(LLVM_LIBRARY_OUTPUT_INTDIR)
|
|
set(LIBCXX_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
|
|
set(LIBCXX_GENERATED_INCLUDE_DIR "${LLVM_BINARY_DIR}/include/c++/v1")
|
|
else()
|
|
set(LIBCXX_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXX_LIBDIR_SUFFIX})
|
|
set(LIBCXX_GENERATED_INCLUDE_DIR "${CMAKE_BINARY_DIR}/include/c++/v1")
|
|
endif()
|
|
set(LIBCXX_GENERATED_INCLUDE_TARGET_DIR "${LIBCXX_GENERATED_INCLUDE_DIR}")
|
|
set(LIBCXX_INSTALL_LIBRARY_DIR lib${LIBCXX_LIBDIR_SUFFIX} CACHE PATH
|
|
"Path where built libc++ libraries should be installed.")
|
|
set(LIBCXX_INSTALL_INCLUDE_TARGET_DIR "${LIBCXX_INSTALL_INCLUDE_DIR}" CACHE PATH
|
|
"Path where target-specific libc++ headers should be installed.")
|
|
endif()
|
|
|
|
file(MAKE_DIRECTORY "${LIBCXX_BINARY_INCLUDE_DIR}")
|
|
|
|
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBCXX_LIBRARY_DIR})
|
|
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIBCXX_LIBRARY_DIR})
|
|
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LIBCXX_LIBRARY_DIR})
|
|
|
|
# Declare libc++ configuration variables.
|
|
# They are intended for use as follows:
|
|
# LIBCXX_CXX_FLAGS: General flags for both the compiler and linker.
|
|
# LIBCXX_COMPILE_FLAGS: Compile only flags.
|
|
# LIBCXX_LINK_FLAGS: Linker only flags.
|
|
# LIBCXX_LIBRARIES: libraries libc++ is linked to.
|
|
set(LIBCXX_COMPILE_FLAGS "")
|
|
set(LIBCXX_LINK_FLAGS "")
|
|
set(LIBCXX_LIBRARIES "")
|
|
set(LIBCXX_ADDITIONAL_COMPILE_FLAGS "" CACHE STRING
|
|
"Additional Compile only flags which can be provided in cache")
|
|
set(LIBCXX_ADDITIONAL_LIBRARIES "" CACHE STRING
|
|
"Additional libraries libc++ is linked to which can be provided in cache")
|
|
|
|
# Include macros for adding and removing libc++ flags.
|
|
include(HandleLibcxxFlags)
|
|
|
|
# Target flags ================================================================
|
|
# These flags get added to CMAKE_CXX_FLAGS and CMAKE_C_FLAGS so that
|
|
# 'config-ix' use them during feature checks. It also adds them to both
|
|
# 'LIBCXX_COMPILE_FLAGS' and 'LIBCXX_LINK_FLAGS'
|
|
|
|
if (${CMAKE_SYSTEM_NAME} MATCHES "AIX")
|
|
add_flags_if_supported("-mdefault-visibility-export-mapping=explicit")
|
|
set(CMAKE_AIX_EXPORT_ALL_SYMBOLS OFF)
|
|
endif()
|
|
|
|
# Configure compiler.
|
|
include(config-ix)
|
|
|
|
# Configure coverage options.
|
|
if (LIBCXX_GENERATE_COVERAGE)
|
|
include(CodeCoverage)
|
|
set(CMAKE_BUILD_TYPE "COVERAGE" CACHE STRING "" FORCE)
|
|
endif()
|
|
|
|
string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
|
|
if (uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
|
|
set(LIBCXX_DEBUG_BUILD ON)
|
|
else()
|
|
set(LIBCXX_DEBUG_BUILD OFF)
|
|
endif()
|
|
|
|
#===============================================================================
|
|
# Setup Compiler Flags
|
|
#===============================================================================
|
|
|
|
include(HandleLibCXXABI) # Setup the ABI library flags
|
|
|
|
# FIXME: Remove all debug flags and flags that change which Windows
|
|
# default libraries are linked. Currently we only support linking the
|
|
# non-debug DLLs
|
|
remove_flags("/D_DEBUG" "/MTd" "/MDd" "/MT" "/Md")
|
|
|
|
# FIXME(EricWF): See the FIXME on LIBCXX_ENABLE_PEDANTIC.
|
|
# Remove the -pedantic flag and -Wno-pedantic and -pedantic-errors
|
|
# so they don't get transformed into -Wno and -errors respectively.
|
|
remove_flags(-Wno-pedantic -pedantic-errors -pedantic)
|
|
|
|
# Required flags ==============================================================
|
|
function(cxx_add_basic_build_flags target)
|
|
|
|
# Require C++20 for all targets. C++17 is needed to use aligned allocation
|
|
# in the dylib. C++20 is needed to use char8_t.
|
|
set_target_properties(${target} PROPERTIES
|
|
CXX_STANDARD 20
|
|
CXX_STANDARD_REQUIRED YES
|
|
CXX_EXTENSIONS NO)
|
|
|
|
# When building the dylib, don't warn for unavailable aligned allocation
|
|
# functions based on the deployment target -- they are always available
|
|
# because they are provided by the dylib itself with the exception of z/OS.
|
|
if (ZOS)
|
|
target_add_compile_flags_if_supported(${target} PRIVATE -fno-aligned-allocation)
|
|
else()
|
|
target_add_compile_flags_if_supported(${target} PRIVATE -faligned-allocation)
|
|
endif()
|
|
|
|
# On all systems the system c++ standard library headers need to be excluded.
|
|
# MSVC only has -X, which disables all default includes; including the crt.
|
|
# Thus, we do nothing and hope we don't accidentally include any of the C++
|
|
# headers
|
|
target_add_compile_flags_if_supported(${target} PUBLIC -nostdinc++)
|
|
|
|
# Hide all inline function definitions which have not explicitly been marked
|
|
# visible. This prevents new definitions for inline functions from appearing in
|
|
# the dylib when get ODR used by another function.
|
|
target_add_compile_flags_if_supported(${target} PRIVATE -fvisibility-inlines-hidden)
|
|
|
|
# Our visibility annotations are not quite right for non-Clang compilers,
|
|
# so we end up not exporting all the symbols we should. In the future, we
|
|
# can improve the situation by providing an explicit list of exported
|
|
# symbols on all compilers.
|
|
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
|
|
target_add_compile_flags_if_supported(${target} PRIVATE -fvisibility=hidden)
|
|
endif()
|
|
|
|
# Let the library headers know they are currently being used to build the
|
|
# library.
|
|
target_compile_definitions(${target} PRIVATE -D_LIBCPP_BUILDING_LIBRARY)
|
|
|
|
# Make sure the library can be build without transitive includes. This makes
|
|
# it easier to upgrade the library to a newer language standard without build
|
|
# errors.
|
|
target_compile_definitions(${target} PRIVATE -D_LIBCPP_REMOVE_TRANSITIVE_INCLUDES)
|
|
|
|
if (NOT LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS)
|
|
target_compile_definitions(${target} PRIVATE -D_LIBCPP_DISABLE_NEW_DELETE_DEFINITIONS)
|
|
endif()
|
|
|
|
if (C_SUPPORTS_COMMENT_LIB_PRAGMA)
|
|
if (LIBCXX_HAS_PTHREAD_LIB)
|
|
target_compile_definitions(${target} PRIVATE -D_LIBCPP_LINK_PTHREAD_LIB)
|
|
endif()
|
|
if (LIBCXX_HAS_RT_LIB)
|
|
target_compile_definitions(${target} PRIVATE -D_LIBCPP_LINK_RT_LIB)
|
|
endif()
|
|
endif()
|
|
target_compile_options(${target} PUBLIC "${LIBCXX_ADDITIONAL_COMPILE_FLAGS}")
|
|
endfunction()
|
|
|
|
# Exception flags =============================================================
|
|
function(cxx_add_exception_flags target)
|
|
if (LIBCXX_ENABLE_EXCEPTIONS)
|
|
# Catches C++ exceptions only and tells the compiler to assume that extern C
|
|
# functions never throw a C++ exception.
|
|
target_add_compile_flags_if_supported(${target} PUBLIC -EHsc)
|
|
else()
|
|
target_add_compile_flags_if_supported(${target} PUBLIC -EHs- -EHa-)
|
|
target_add_compile_flags_if_supported(${target} PUBLIC -fno-exceptions)
|
|
endif()
|
|
endfunction()
|
|
|
|
# RTTI flags ==================================================================
|
|
function(cxx_add_rtti_flags target)
|
|
if (NOT LIBCXX_ENABLE_RTTI)
|
|
target_add_compile_flags_if_supported(${target} PUBLIC -GR-)
|
|
target_add_compile_flags_if_supported(${target} PUBLIC -fno-rtti)
|
|
endif()
|
|
endfunction()
|
|
|
|
# Threading flags =============================================================
|
|
if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY AND LIBCXX_ENABLE_SHARED)
|
|
# Need to allow unresolved symbols if this is to work with shared library builds
|
|
if (APPLE)
|
|
add_link_flags("-undefined dynamic_lookup")
|
|
else()
|
|
# Relax this restriction from HandleLLVMOptions
|
|
string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
|
|
endif()
|
|
endif()
|
|
|
|
# Assertion flags =============================================================
|
|
define_if(LIBCXX_DEBUG_BUILD -D_DEBUG)
|
|
if (LIBCXX_ENABLE_ASSERTIONS AND NOT LIBCXX_DEBUG_BUILD)
|
|
# MSVC doesn't like _DEBUG on release builds. See PR 4379.
|
|
define_if_not(LIBCXX_TARGETING_MSVC -D_DEBUG)
|
|
endif()
|
|
|
|
# Modules flags ===============================================================
|
|
# FIXME The libc++ sources are fundamentally non-modular. They need special
|
|
# versions of the headers in order to provide C++03 and legacy ABI definitions.
|
|
# NOTE: The public headers can be used with modules in all other contexts.
|
|
function(cxx_add_module_flags target)
|
|
if (LLVM_ENABLE_MODULES)
|
|
# Ignore that the rest of the modules flags are now unused.
|
|
target_add_compile_flags_if_supported(${target} PUBLIC -Wno-unused-command-line-argument)
|
|
target_compile_options(${target} PUBLIC -fno-modules)
|
|
endif()
|
|
endfunction()
|
|
|
|
# Sanitizer flags =============================================================
|
|
|
|
function(get_sanitizer_flags OUT_VAR USE_SANITIZER)
|
|
set(SANITIZER_FLAGS)
|
|
set(USE_SANITIZER "${USE_SANITIZER}")
|
|
# NOTE: LLVM_USE_SANITIZER checks for a UNIX like system instead of MSVC.
|
|
# But we don't have LLVM_ON_UNIX so checking for MSVC is the best we can do.
|
|
if (USE_SANITIZER AND NOT MSVC)
|
|
append_flags_if_supported(SANITIZER_FLAGS "-fno-omit-frame-pointer")
|
|
append_flags_if_supported(SANITIZER_FLAGS "-gline-tables-only")
|
|
|
|
if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" AND
|
|
NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELWITHDEBINFO")
|
|
append_flags_if_supported(SANITIZER_FLAGS "-gline-tables-only")
|
|
endif()
|
|
if (USE_SANITIZER STREQUAL "Address")
|
|
append_flags(SANITIZER_FLAGS "-fsanitize=address")
|
|
elseif (USE_SANITIZER STREQUAL "HWAddress")
|
|
append_flags(SANITIZER_FLAGS "-fsanitize=hwaddress")
|
|
elseif (USE_SANITIZER MATCHES "Memory(WithOrigins)?")
|
|
append_flags(SANITIZER_FLAGS -fsanitize=memory)
|
|
if (USE_SANITIZER STREQUAL "MemoryWithOrigins")
|
|
append_flags(SANITIZER_FLAGS "-fsanitize-memory-track-origins")
|
|
endif()
|
|
elseif (USE_SANITIZER STREQUAL "Undefined")
|
|
append_flags(SANITIZER_FLAGS "-fsanitize=undefined -fno-sanitize=vptr,function -fno-sanitize-recover=all")
|
|
elseif (USE_SANITIZER STREQUAL "Address;Undefined" OR
|
|
USE_SANITIZER STREQUAL "Undefined;Address")
|
|
append_flags(SANITIZER_FLAGS "-fsanitize=address,undefined -fno-sanitize=vptr,function -fno-sanitize-recover=all")
|
|
elseif (USE_SANITIZER STREQUAL "Thread")
|
|
append_flags(SANITIZER_FLAGS -fsanitize=thread)
|
|
elseif (USE_SANITIZER STREQUAL "DataFlow")
|
|
append_flags(SANITIZER_FLAGS -fsanitize=dataflow)
|
|
else()
|
|
message(WARNING "Unsupported value of LLVM_USE_SANITIZER: ${USE_SANITIZER}")
|
|
endif()
|
|
elseif(USE_SANITIZER AND MSVC)
|
|
message(WARNING "LLVM_USE_SANITIZER is not supported on this platform.")
|
|
endif()
|
|
set(${OUT_VAR} "${SANITIZER_FLAGS}" PARENT_SCOPE)
|
|
endfunction()
|
|
|
|
get_sanitizer_flags(SANITIZER_FLAGS "${LLVM_USE_SANITIZER}")
|
|
|
|
# Link system libraries =======================================================
|
|
function(cxx_link_system_libraries target)
|
|
|
|
# In order to remove just libc++ from the link step
|
|
# we need to use -nostdlib++ whenever it is supported.
|
|
# Unfortunately this cannot be used universally because for example g++ supports
|
|
# only -nodefaultlibs in which case all libraries will be removed and
|
|
# all libraries but c++ have to be added in manually.
|
|
if (CXX_SUPPORTS_NOSTDLIBXX_FLAG)
|
|
target_add_link_flags_if_supported(${target} PRIVATE "-nostdlib++")
|
|
else()
|
|
target_add_link_flags_if_supported(${target} PRIVATE "-nodefaultlibs")
|
|
target_add_compile_flags_if_supported(${target} PRIVATE "/Zl")
|
|
target_add_link_flags_if_supported(${target} PRIVATE "/nodefaultlib")
|
|
endif()
|
|
|
|
if (CXX_SUPPORTS_UNWINDLIB_EQ_NONE_FLAG AND LIBCXXABI_USE_LLVM_UNWINDER)
|
|
# If we're linking directly against the libunwind that we're building
|
|
# in the same invocation, don't try to link in the toolchain's
|
|
# default libunwind (which may be missing still).
|
|
target_add_link_flags_if_supported(${target} PRIVATE "--unwindlib=none")
|
|
endif()
|
|
|
|
if (LIBCXX_HAS_SYSTEM_LIB)
|
|
target_link_libraries(${target} PRIVATE System)
|
|
endif()
|
|
|
|
if (LIBCXX_HAS_PTHREAD_LIB)
|
|
target_link_libraries(${target} PRIVATE pthread)
|
|
endif()
|
|
|
|
if (LIBCXX_HAS_C_LIB)
|
|
target_link_libraries(${target} PRIVATE c)
|
|
endif()
|
|
|
|
if (LIBCXX_HAS_M_LIB)
|
|
target_link_libraries(${target} PRIVATE m)
|
|
endif()
|
|
|
|
if (LIBCXX_HAS_RT_LIB)
|
|
target_link_libraries(${target} PRIVATE rt)
|
|
endif()
|
|
|
|
if (LIBCXX_USE_COMPILER_RT)
|
|
find_compiler_rt_library(builtins LIBCXX_BUILTINS_LIBRARY)
|
|
if (LIBCXX_BUILTINS_LIBRARY)
|
|
target_link_libraries(${target} PRIVATE "${LIBCXX_BUILTINS_LIBRARY}")
|
|
endif()
|
|
elseif (LIBCXX_HAS_GCC_LIB)
|
|
target_link_libraries(${target} PRIVATE gcc)
|
|
elseif (LIBCXX_HAS_GCC_S_LIB)
|
|
target_link_libraries(${target} PRIVATE gcc_s)
|
|
endif()
|
|
|
|
if (LIBCXX_HAS_ATOMIC_LIB)
|
|
target_link_libraries(${target} PRIVATE atomic)
|
|
endif()
|
|
|
|
if (MINGW)
|
|
target_link_libraries(${target} PRIVATE "${MINGW_LIBRARIES}")
|
|
endif()
|
|
|
|
if (LIBCXX_TARGETING_MSVC)
|
|
if (LIBCXX_DEBUG_BUILD)
|
|
set(LIB_SUFFIX "d")
|
|
else()
|
|
set(LIB_SUFFIX "")
|
|
endif()
|
|
|
|
target_link_libraries(${target} PRIVATE ucrt${LIB_SUFFIX}) # Universal C runtime
|
|
target_link_libraries(${target} PRIVATE vcruntime${LIB_SUFFIX}) # C++ runtime
|
|
target_link_libraries(${target} PRIVATE msvcrt${LIB_SUFFIX}) # C runtime startup files
|
|
target_link_libraries(${target} PRIVATE msvcprt${LIB_SUFFIX}) # C++ standard library. Required for exception_ptr internals.
|
|
# Required for standards-complaint wide character formatting functions
|
|
# (e.g. `printfw`/`scanfw`)
|
|
target_link_libraries(${target} PRIVATE iso_stdio_wide_specifiers)
|
|
endif()
|
|
|
|
if (ANDROID AND ANDROID_PLATFORM_LEVEL LESS 21)
|
|
target_link_libraries(${target} PUBLIC android_support)
|
|
endif()
|
|
target_link_libraries(${target} PUBLIC "${LIBCXX_ADDITIONAL_LIBRARIES}")
|
|
endfunction()
|
|
|
|
# Windows-related flags =======================================================
|
|
function(cxx_add_windows_flags target)
|
|
if(WIN32 AND NOT MINGW)
|
|
target_compile_definitions(${target} PRIVATE
|
|
# Ignore the -MSC_VER mismatch, as we may build
|
|
# with a different compatibility version.
|
|
_ALLOW_MSC_VER_MISMATCH
|
|
# Don't check the msvcprt iterator debug levels
|
|
# as we will define the iterator types; libc++
|
|
# uses a different macro to identify the debug
|
|
# level.
|
|
_ALLOW_ITERATOR_DEBUG_LEVEL_MISMATCH
|
|
# We are building the c++ runtime, don't pull in
|
|
# msvcprt.
|
|
_CRTBLD
|
|
# Don't warn on the use of "deprecated"
|
|
# "insecure" functions which are standards
|
|
# specified.
|
|
_CRT_SECURE_NO_WARNINGS
|
|
# Use the ISO conforming behaviour for conversion
|
|
# in printf, scanf.
|
|
_CRT_STDIO_ISO_WIDE_SPECIFIERS)
|
|
endif()
|
|
endfunction()
|
|
|
|
# Configuration file flags =====================================================
|
|
config_define(${LIBCXX_ABI_VERSION} _LIBCPP_ABI_VERSION)
|
|
config_define(${LIBCXX_ABI_NAMESPACE} _LIBCPP_ABI_NAMESPACE)
|
|
config_define_if(LIBCXX_ABI_FORCE_ITANIUM _LIBCPP_ABI_FORCE_ITANIUM)
|
|
config_define_if(LIBCXX_ABI_FORCE_MICROSOFT _LIBCPP_ABI_FORCE_MICROSOFT)
|
|
config_define_if_not(LIBCXX_ENABLE_THREADS _LIBCPP_HAS_NO_THREADS)
|
|
config_define_if_not(LIBCXX_ENABLE_MONOTONIC_CLOCK _LIBCPP_HAS_NO_MONOTONIC_CLOCK)
|
|
if (NOT LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION STREQUAL "default")
|
|
config_define("${LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION}" _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION)
|
|
endif()
|
|
config_define_if(LIBCXX_HAS_PTHREAD_API _LIBCPP_HAS_THREAD_API_PTHREAD)
|
|
config_define_if(LIBCXX_HAS_EXTERNAL_THREAD_API _LIBCPP_HAS_THREAD_API_EXTERNAL)
|
|
config_define_if(LIBCXX_HAS_WIN32_THREAD_API _LIBCPP_HAS_THREAD_API_WIN32)
|
|
config_define_if(LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY _LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL)
|
|
config_define_if(LIBCXX_HAS_MUSL_LIBC _LIBCPP_HAS_MUSL_LIBC)
|
|
config_define_if(LIBCXX_NO_VCRUNTIME _LIBCPP_NO_VCRUNTIME)
|
|
config_define_if_not(LIBCXX_ENABLE_FILESYSTEM _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
|
|
config_define_if_not(LIBCXX_ENABLE_RANDOM_DEVICE _LIBCPP_HAS_NO_RANDOM_DEVICE)
|
|
config_define_if_not(LIBCXX_ENABLE_LOCALIZATION _LIBCPP_HAS_NO_LOCALIZATION)
|
|
config_define_if_not(LIBCXX_ENABLE_FSTREAM _LIBCPP_HAS_NO_FSTREAM)
|
|
config_define_if_not(LIBCXX_ENABLE_UNICODE _LIBCPP_HAS_NO_UNICODE)
|
|
config_define_if_not(LIBCXX_ENABLE_WIDE_CHARACTERS _LIBCPP_HAS_NO_WIDE_CHARACTERS)
|
|
config_define_if_not(LIBCXX_ENABLE_VENDOR_AVAILABILITY_ANNOTATIONS _LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS)
|
|
config_define_if(LIBCXX_ENABLE_DEBUG_MODE _LIBCPP_ENABLE_DEBUG_MODE)
|
|
if (LIBCXX_ENABLE_ASSERTIONS)
|
|
config_define(1 _LIBCPP_ENABLE_ASSERTIONS_DEFAULT)
|
|
else()
|
|
config_define(0 _LIBCPP_ENABLE_ASSERTIONS_DEFAULT)
|
|
endif()
|
|
|
|
if (LIBCXX_PSTL_CPU_BACKEND STREQUAL "serial")
|
|
config_define(1 _LIBCPP_PSTL_CPU_BACKEND_SERIAL)
|
|
elseif(LIBCXX_PSTL_CPU_BACKEND STREQUAL "std_thread")
|
|
config_define(1 _LIBCPP_PSTL_CPU_BACKEND_THREAD)
|
|
else()
|
|
message(FATAL_ERROR "LIBCXX_PSTL_CPU_BACKEND is set to ${LIBCXX_PSTL_CPU_BACKEND}, which is not a valid backend.
|
|
Valid backends are: serial, std_thread")
|
|
endif()
|
|
|
|
if (LIBCXX_ABI_DEFINES)
|
|
set(abi_defines)
|
|
foreach (abi_define ${LIBCXX_ABI_DEFINES})
|
|
if (NOT abi_define MATCHES "^_LIBCPP_ABI_")
|
|
message(SEND_ERROR "Invalid ABI macro ${abi_define} in LIBCXX_ABI_DEFINES")
|
|
endif()
|
|
list(APPEND abi_defines "#define ${abi_define}")
|
|
endforeach()
|
|
string(REPLACE ";" "\n" abi_defines "${abi_defines}")
|
|
config_define(${abi_defines} _LIBCPP_ABI_DEFINES)
|
|
endif()
|
|
|
|
if (LIBCXX_EXTRA_SITE_DEFINES)
|
|
set(extra_site_defines)
|
|
foreach (extra_site_define ${LIBCXX_EXTRA_SITE_DEFINES})
|
|
# Allow defines such as DEFINE=VAL, transformed into "#define DEFINE VAL".
|
|
string(REPLACE "=" " " extra_site_define "${extra_site_define}")
|
|
list(APPEND extra_site_defines "#define ${extra_site_define}")
|
|
endforeach()
|
|
string(REPLACE ";" "\n" extra_site_defines "${extra_site_defines}")
|
|
config_define(${extra_site_defines} _LIBCPP_EXTRA_SITE_DEFINES)
|
|
endif()
|
|
|
|
# By default libc++ on Windows expects to use a shared library, which requires
|
|
# the headers to use DLL import/export semantics. However when building a
|
|
# static library only we modify the headers to disable DLL import/export.
|
|
if (DEFINED WIN32 AND LIBCXX_ENABLE_STATIC AND NOT LIBCXX_ENABLE_SHARED)
|
|
message(STATUS "Generating custom __config for non-DLL Windows build")
|
|
config_define(ON _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
|
|
endif()
|
|
|
|
if (WIN32 AND LIBCXX_ENABLE_STATIC_ABI_LIBRARY)
|
|
# If linking libcxxabi statically into libcxx, skip the dllimport attributes
|
|
# on symbols we refer to from libcxxabi.
|
|
add_definitions(-D_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS)
|
|
endif()
|
|
|
|
# Setup all common build flags =================================================
|
|
function(cxx_add_common_build_flags target)
|
|
cxx_add_basic_build_flags(${target})
|
|
cxx_add_warning_flags(${target} ${LIBCXX_ENABLE_WERROR} ${LIBCXX_ENABLE_PEDANTIC})
|
|
cxx_add_windows_flags(${target})
|
|
cxx_add_exception_flags(${target})
|
|
cxx_add_rtti_flags(${target})
|
|
cxx_add_module_flags(${target})
|
|
cxx_link_system_libraries(${target})
|
|
endfunction()
|
|
|
|
#===============================================================================
|
|
# Setup Source Code And Tests
|
|
#===============================================================================
|
|
add_subdirectory(include)
|
|
add_subdirectory(src)
|
|
add_subdirectory(utils)
|
|
|
|
set(LIBCXX_TEST_DEPS "cxx_experimental")
|
|
|
|
if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
|
|
list(APPEND LIBCXX_TEST_DEPS cxx_external_threads)
|
|
endif()
|
|
|
|
if (LIBCXX_ENABLE_CLANG_TIDY)
|
|
list(APPEND LIBCXX_TEST_DEPS cxx-tidy)
|
|
endif()
|
|
|
|
if (LIBCXX_INCLUDE_BENCHMARKS)
|
|
add_subdirectory(benchmarks)
|
|
endif()
|
|
|
|
if (LIBCXX_INCLUDE_TESTS)
|
|
add_subdirectory(test)
|
|
add_subdirectory(lib/abi)
|
|
endif()
|
|
|
|
if (LIBCXX_INCLUDE_DOCS)
|
|
add_subdirectory(docs)
|
|
endif()
|