forked from OSchip/llvm-project
331 lines
14 KiB
CMake
331 lines
14 KiB
CMake
# CMake build for CompilerRT.
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#
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# This build assumes that CompilerRT is checked out into the
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# 'projects/compiler-rt' inside of an LLVM tree.
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# Standalone build system for CompilerRT is not yet ready.
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#
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# An important constraint of the build is that it only produces libraries
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# based on the ability of the host toolchain to target various platforms.
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# Check if compiler-rt is built as a standalone project.
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if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
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project(CompilerRT C CXX ASM)
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set(COMPILER_RT_STANDALONE_BUILD TRUE)
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else()
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set(COMPILER_RT_STANDALONE_BUILD FALSE)
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endif()
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# The CompilerRT build system requires CMake version 2.8.8 or higher in order
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# to use its support for building convenience "libraries" as a collection of
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# .o files. This is particularly useful in producing larger, more complex
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# runtime libraries.
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if (NOT MSVC)
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cmake_minimum_required(VERSION 2.8.8)
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else()
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# Version 2.8.12.1 is required to build with Visual Studio 2013.
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cmake_minimum_required(VERSION 2.8.12.1)
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endif()
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# FIXME: It may be removed when we use 2.8.12.
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if(CMAKE_VERSION VERSION_LESS 2.8.12)
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# Invalidate a couple of keywords.
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set(cmake_2_8_12_INTERFACE)
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set(cmake_2_8_12_PRIVATE)
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else()
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# Use ${cmake_2_8_12_KEYWORD} intead of KEYWORD in target_link_libraries().
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set(cmake_2_8_12_INTERFACE INTERFACE)
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set(cmake_2_8_12_PRIVATE PRIVATE)
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if(POLICY CMP0022)
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cmake_policy(SET CMP0022 NEW) # automatic when 2.8.12 is required
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endif()
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endif()
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# Top level target used to build all compiler-rt libraries.
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add_custom_target(compiler-rt ALL)
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option(COMPILER_RT_BUILD_BUILTINS "Build builtins" ON)
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mark_as_advanced(COMPILER_RT_BUILD_BUILTINS)
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option(COMPILER_RT_BUILD_SANITIZERS "Build sanitizers" ON)
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mark_as_advanced(COMPILER_RT_BUILD_SANITIZERS)
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if (NOT COMPILER_RT_STANDALONE_BUILD)
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# Compute the Clang version from the LLVM version.
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# FIXME: We should be able to reuse CLANG_VERSION variable calculated
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# in Clang cmake files, instead of copying the rules here.
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string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION
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${PACKAGE_VERSION})
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# Setup the paths where compiler-rt runtimes and headers should be stored.
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set(COMPILER_RT_OUTPUT_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/clang/${CLANG_VERSION})
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set(COMPILER_RT_EXEC_OUTPUT_DIR ${LLVM_RUNTIME_OUTPUT_INTDIR})
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set(COMPILER_RT_INSTALL_PATH lib${LLVM_LIBDIR_SUFFIX}/clang/${CLANG_VERSION})
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option(COMPILER_RT_INCLUDE_TESTS "Generate and build compiler-rt unit tests."
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${LLVM_INCLUDE_TESTS})
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option(COMPILER_RT_ENABLE_WERROR "Fail and stop if warning is triggered"
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${LLVM_ENABLE_WERROR})
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# Use just-built Clang to compile/link tests on all platforms, except for
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# Windows where we need to use clang-cl instead.
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if(NOT MSVC)
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set(COMPILER_RT_TEST_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang)
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set(COMPILER_RT_TEST_CXX_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++)
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else()
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set(COMPILER_RT_TEST_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang.exe)
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set(COMPILER_RT_TEST_CXX_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++.exe)
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endif()
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else()
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# Take output dir and install path from the user.
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set(COMPILER_RT_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR} CACHE PATH
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"Path where built compiler-rt libraries should be stored.")
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set(COMPILER_RT_EXEC_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/bin CACHE PATH
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"Path where built compiler-rt executables should be stored.")
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set(COMPILER_RT_INSTALL_PATH ${CMAKE_INSTALL_PREFIX} CACHE PATH
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"Path where built compiler-rt libraries should be installed.")
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option(COMPILER_RT_INCLUDE_TESTS "Generate and build compiler-rt unit tests." OFF)
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option(COMPILER_RT_ENABLE_WERROR "Fail and stop if warning is triggered" OFF)
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# Use a host compiler to compile/link tests.
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set(COMPILER_RT_TEST_COMPILER ${CMAKE_C_COMPILER} CACHE PATH "Compiler to use for testing")
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set(COMPILER_RT_TEST_CXX_COMPILER ${CMAKE_CXX_COMPILER} CACHE PATH "C++ Compiler to use for testing")
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if (NOT LLVM_CONFIG_PATH)
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find_program(LLVM_CONFIG_PATH "llvm-config"
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DOC "Path to llvm-config binary")
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if (NOT LLVM_CONFIG_PATH)
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message(FATAL_ERROR "llvm-config not found: specify LLVM_CONFIG_PATH")
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endif()
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endif()
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execute_process(
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COMMAND ${LLVM_CONFIG_PATH} "--obj-root" "--bindir" "--libdir" "--src-root"
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RESULT_VARIABLE HAD_ERROR
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OUTPUT_VARIABLE CONFIG_OUTPUT)
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if (HAD_ERROR)
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message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
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endif()
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string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT})
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list(GET CONFIG_OUTPUT 0 LLVM_BINARY_DIR)
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list(GET CONFIG_OUTPUT 1 LLVM_TOOLS_BINARY_DIR)
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list(GET CONFIG_OUTPUT 2 LLVM_LIBRARY_DIR)
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list(GET CONFIG_OUTPUT 3 LLVM_MAIN_SRC_DIR)
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# Make use of LLVM CMake modules.
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file(TO_CMAKE_PATH ${LLVM_BINARY_DIR} LLVM_BINARY_DIR_CMAKE_STYLE)
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set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR_CMAKE_STYLE}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm")
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list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
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# Get some LLVM variables from LLVMConfig.
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include("${LLVM_CMAKE_PATH}/LLVMConfig.cmake")
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set(LLVM_LIBRARY_OUTPUT_INTDIR
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${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
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# Find Python interpreter.
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set(Python_ADDITIONAL_VERSIONS 2.7 2.6 2.5)
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include(FindPythonInterp)
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if(NOT PYTHONINTERP_FOUND)
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message(FATAL_ERROR "
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Unable to find Python interpreter required testing. Please install Python
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or specify the PYTHON_EXECUTABLE CMake variable.")
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endif()
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# Define default arguments to lit.
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set(LIT_ARGS_DEFAULT "-sv")
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if (MSVC OR XCODE)
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set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
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endif()
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set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
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endif()
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if("${COMPILER_RT_TEST_COMPILER}" MATCHES "clang[+]*$")
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set(COMPILER_RT_TEST_COMPILER_ID Clang)
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elseif("${COMPILER_RT_TEST_COMPILER}" MATCHES "clang.*.exe$")
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set(COMPILER_RT_TEST_COMPILER_ID Clang)
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else()
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set(COMPILER_RT_TEST_COMPILER_ID GNU)
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endif()
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set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${TARGET_TRIPLE} CACHE STRING
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"Default triple for which compiler-rt runtimes will be built.")
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if(DEFINED COMPILER_RT_TEST_TARGET_TRIPLE)
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# Backwards compatibility: this variable used to be called
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# COMPILER_RT_TEST_TARGET_TRIPLE.
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set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${COMPILER_RT_TEST_TARGET_TRIPLE})
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endif()
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string(REPLACE "-" ";" TARGET_TRIPLE_LIST ${COMPILER_RT_DEFAULT_TARGET_TRIPLE})
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list(GET TARGET_TRIPLE_LIST 0 COMPILER_RT_DEFAULT_TARGET_ARCH)
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list(GET TARGET_TRIPLE_LIST 1 COMPILER_RT_DEFAULT_TARGET_OS)
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list(GET TARGET_TRIPLE_LIST 2 COMPILER_RT_DEFAULT_TARGET_ABI)
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# Determine if test target triple is specified explicitly, and doesn't match the
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# default.
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if(NOT COMPILER_RT_DEFAULT_TARGET_TRIPLE STREQUAL TARGET_TRIPLE)
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set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE TRUE)
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else()
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set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE FALSE)
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endif()
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if ("${COMPILER_RT_DEFAULT_TARGET_ABI}" STREQUAL "androideabi")
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set(ANDROID 1)
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endif()
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string(TOLOWER ${CMAKE_SYSTEM_NAME} COMPILER_RT_OS_DIR)
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set(COMPILER_RT_LIBRARY_OUTPUT_DIR
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${COMPILER_RT_OUTPUT_DIR}/lib/${COMPILER_RT_OS_DIR})
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set(COMPILER_RT_LIBRARY_INSTALL_DIR
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${COMPILER_RT_INSTALL_PATH}/lib/${COMPILER_RT_OS_DIR})
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# Add path for custom compiler-rt modules.
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set(CMAKE_MODULE_PATH
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
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${CMAKE_MODULE_PATH}
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)
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include(CompilerRTUtils)
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set(COMPILER_RT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
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set(COMPILER_RT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
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# We support running instrumented tests when we're not cross compiling
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# and target a UNIX-like system or Windows.
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# We can run tests on Android even when we are cross-compiling.
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if(("${CMAKE_HOST_SYSTEM}" STREQUAL "${CMAKE_SYSTEM}" AND (UNIX OR WIN32)) OR ANDROID
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OR COMPILER_RT_EMULATOR)
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option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" ON)
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else()
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option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" OFF)
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endif()
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option(COMPILER_RT_DEBUG "Build runtimes with full debug info" OFF)
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option(COMPILER_RT_EXTERNALIZE_DEBUGINFO
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"Generate dSYM files and strip executables and libraries (Darwin Only)" OFF)
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# COMPILER_RT_DEBUG_PYBOOL is used by lit.common.configured.in.
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pythonize_bool(COMPILER_RT_DEBUG)
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#================================
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# Setup Compiler Flags
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#================================
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include(CheckIncludeFile)
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check_include_file(unwind.h HAVE_UNWIND_H)
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include(config-ix)
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if(MSVC)
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append_string_if(COMPILER_RT_HAS_W3_FLAG /W3 CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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else()
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append_string_if(COMPILER_RT_HAS_WALL_FLAG -Wall CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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endif()
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if(COMPILER_RT_ENABLE_WERROR)
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append_string_if(COMPILER_RT_HAS_WERROR_FLAG -Werror CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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append_string_if(COMPILER_RT_HAS_WX_FLAG /WX CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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endif()
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append_string_if(COMPILER_RT_HAS_STD_CXX11_FLAG -std=c++11 CMAKE_CXX_FLAGS)
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# Emulate C99 and C++11's __func__ for MSVC prior to 2013 CTP.
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if(NOT COMPILER_RT_HAS_FUNC_SYMBOL)
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add_definitions(-D__func__=__FUNCTION__)
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endif()
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# Provide some common commmandline flags for Sanitizer runtimes.
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append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_BUILTIN_FLAG -fno-builtin SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG -fno-exceptions SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FOMIT_FRAME_POINTER_FLAG -fomit-frame-pointer SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FUNWIND_TABLES_FLAG -funwind-tables SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_STACK_PROTECTOR_FLAG -fno-stack-protector SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_SANITIZE_SAFE_STACK_FLAG -fno-sanitize=safe-stack SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG -fvisibility=hidden SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FVISIBILITY_INLINES_HIDDEN_FLAG -fvisibility-inlines-hidden SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_FUNCTION_SECTIONS_FLAG -fno-function-sections SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_LTO_FLAG -fno-lto SANITIZER_COMMON_CFLAGS)
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if(MSVC)
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# Replace the /M[DT][d] flags with /MT, and strip any definitions of _DEBUG,
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# which cause definition mismatches at link time.
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# FIXME: In fact, sanitizers should support both /MT and /MD, see PR20214.
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if(COMPILER_RT_HAS_MT_FLAG)
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foreach(flag_var
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CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
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CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
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CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
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CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
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string(REGEX REPLACE "/M[DT]d" "/MT" ${flag_var} "${${flag_var}}")
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string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
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string(REGEX REPLACE "/D_DEBUG" "" ${flag_var} "${${flag_var}}")
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endforeach()
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endif()
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append_list_if(COMPILER_RT_HAS_Oy_FLAG /Oy- SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_GS_FLAG /GS- SANITIZER_COMMON_CFLAGS)
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endif()
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append_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 SANITIZER_COMMON_CFLAGS)
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# Build with optimization, unless we're in debug mode. If we're using MSVC,
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# always respect the optimization flags set by CMAKE_BUILD_TYPE instead.
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if(NOT COMPILER_RT_DEBUG AND NOT MSVC)
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list(APPEND SANITIZER_COMMON_CFLAGS -O3)
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endif()
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# Determine if we should restrict stack frame sizes.
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# Stack frames on PowerPC and Mips and in debug biuld can be much larger than
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# anticipated.
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# FIXME: Fix all sanitizers and add -Wframe-larger-than to
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# SANITIZER_COMMON_FLAGS
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if(COMPILER_RT_HAS_WFRAME_LARGER_THAN_FLAG AND NOT COMPILER_RT_DEBUG
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AND NOT ${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES "powerpc|mips")
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set(SANITIZER_LIMIT_FRAME_SIZE TRUE)
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else()
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set(SANITIZER_LIMIT_FRAME_SIZE FALSE)
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endif()
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# Build sanitizer runtimes with debug info.
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if(COMPILER_RT_HAS_GLINE_TABLES_ONLY_FLAG AND NOT COMPILER_RT_DEBUG)
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list(APPEND SANITIZER_COMMON_CFLAGS -gline-tables-only)
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elseif(COMPILER_RT_HAS_G_FLAG)
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list(APPEND SANITIZER_COMMON_CFLAGS -g)
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elseif(COMPILER_RT_HAS_Zi_FLAG)
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list(APPEND SANITIZER_COMMON_CFLAGS /Zi)
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endif()
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# Turn off several warnings.
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append_list_if(COMPILER_RT_HAS_WGNU_FLAG -Wno-gnu SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WVARIADIC_MACROS_FLAG -Wno-variadic-macros SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WC99_EXTENSIONS_FLAG -Wno-c99-extensions SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WNON_VIRTUAL_DTOR_FLAG -Wno-non-virtual-dtor SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WD4146_FLAG /wd4146 SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WD4291_FLAG /wd4291 SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WD4391_FLAG /wd4391 SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WD4722_FLAG /wd4722 SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WD4800_FLAG /wd4800 SANITIZER_COMMON_CFLAGS)
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if(APPLE AND SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.9")
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# Mac OS X prior to 10.9 had problems with exporting symbols from
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# libc++/libc++abi.
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set(SANITIZER_CAN_USE_CXXABI FALSE)
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elseif(MSVC)
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set(SANITIZER_CAN_USE_CXXABI FALSE)
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else()
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set(SANITIZER_CAN_USE_CXXABI TRUE)
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endif()
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pythonize_bool(SANITIZER_CAN_USE_CXXABI)
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add_subdirectory(include)
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set(COMPILER_RT_LIBCXX_PATH ${LLVM_MAIN_SRC_DIR}/projects/libcxx)
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if(EXISTS ${COMPILER_RT_LIBCXX_PATH}/)
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set(COMPILER_RT_HAS_LIBCXX_SOURCES TRUE)
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else()
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set(COMPILER_RT_HAS_LIBCXX_SOURCES FALSE)
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endif()
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set(COMPILER_RT_LLD_PATH ${LLVM_MAIN_SRC_DIR}/tools/lld)
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if(EXISTS ${COMPILER_RT_LLD_PATH}/)
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set(COMPILER_RT_HAS_LLD_SOURCES TRUE)
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else()
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set(COMPILER_RT_HAS_LLD_SOURCES FALSE)
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endif()
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pythonize_bool(COMPILER_RT_HAS_LLD_SOURCES)
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add_subdirectory(lib)
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if(COMPILER_RT_INCLUDE_TESTS)
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add_subdirectory(unittests)
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add_subdirectory(test)
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endif()
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