# CMake build for CompilerRT. # # This build assumes that CompilerRT is checked out into the # 'projects/compiler-rt' inside of an LLVM tree. # Standalone build system for CompilerRT is not yet ready. # # An important constraint of the build is that it only produces libraries # based on the ability of the host toolchain to target various platforms. # Check if compiler-rt is built as a standalone project. if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) project(CompilerRT) set(COMPILER_RT_STANDALONE_BUILD TRUE) else() set(COMPILER_RT_STANDALONE_BUILD FALSE) endif() # The CompilerRT build system requires CMake version 2.8.8 or higher in order # to use its support for building convenience "libraries" as a collection of # .o files. This is particularly useful in producing larger, more complex # runtime libraries. if (NOT MSVC) cmake_minimum_required(VERSION 2.8.8) else() # Version 2.8.12.1 is required to build with Visual Studion 2013. cmake_minimum_required(VERSION 2.8.12.1) endif() # FIXME: It may be removed when we use 2.8.12. if(CMAKE_VERSION VERSION_LESS 2.8.12) # Invalidate a couple of keywords. set(cmake_2_8_12_INTERFACE) set(cmake_2_8_12_PRIVATE) else() # Use ${cmake_2_8_12_KEYWORD} intead of KEYWORD in target_link_libraries(). set(cmake_2_8_12_INTERFACE INTERFACE) set(cmake_2_8_12_PRIVATE PRIVATE) if(POLICY CMP0022) cmake_policy(SET CMP0022 NEW) # automatic when 2.8.12 is required endif() endif() # Top level target used to build all compiler-rt libraries. add_custom_target(compiler-rt ALL) if (NOT COMPILER_RT_STANDALONE_BUILD) # Compute the Clang version from the LLVM version. # FIXME: We should be able to reuse CLANG_VERSION variable calculated # in Clang cmake files, instead of copying the rules here. string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION ${PACKAGE_VERSION}) # Setup the paths where compiler-rt runtimes and headers should be stored. set(COMPILER_RT_OUTPUT_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/clang/${CLANG_VERSION}) set(COMPILER_RT_EXEC_OUTPUT_DIR ${LLVM_RUNTIME_OUTPUT_INTDIR}) set(COMPILER_RT_INSTALL_PATH lib${LLVM_LIBDIR_SUFFIX}/clang/${CLANG_VERSION}) option(COMPILER_RT_INCLUDE_TESTS "Generate and build compiler-rt unit tests." ${LLVM_INCLUDE_TESTS}) option(COMPILER_RT_ENABLE_WERROR "Fail and stop if warning is triggered" ${LLVM_ENABLE_WERROR}) # Use just-built Clang to compile/link tests on all platforms, except for # Windows where we need to use clang-cl instead. if(NOT MSVC) set(COMPILER_RT_TEST_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang) else() set(COMPILER_RT_TEST_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang.exe) endif() else() # Take output dir and install path from the user. set(COMPILER_RT_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR} CACHE PATH "Path where built compiler-rt libraries should be stored.") set(COMPILER_RT_EXEC_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/bin CACHE PATH "Path where built compiler-rt executables should be stored.") set(COMPILER_RT_INSTALL_PATH ${CMAKE_INSTALL_PREFIX} CACHE PATH "Path where built compiler-rt libraries should be installed.") option(COMPILER_RT_INCLUDE_TESTS "Generate and build compiler-rt unit tests." OFF) option(COMPILER_RT_ENABLE_WERROR "Fail and stop if warning is triggered" OFF) # Use a host compiler to compile/link tests. set(COMPILER_RT_TEST_COMPILER ${CMAKE_C_COMPILER} CACHE PATH "Compiler to use for testing") if (NOT LLVM_CONFIG_PATH) find_program(LLVM_CONFIG_PATH "llvm-config" DOC "Path to llvm-config binary") if (NOT LLVM_CONFIG_PATH) message(FATAL_ERROR "llvm-config not found: specify LLVM_CONFIG_PATH") endif() endif() execute_process( COMMAND ${LLVM_CONFIG_PATH} "--obj-root" "--bindir" "--libdir" "--src-root" RESULT_VARIABLE HAD_ERROR OUTPUT_VARIABLE CONFIG_OUTPUT) if (HAD_ERROR) message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}") endif() string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT}) list(GET CONFIG_OUTPUT 0 LLVM_BINARY_DIR) list(GET CONFIG_OUTPUT 1 LLVM_TOOLS_BINARY_DIR) list(GET CONFIG_OUTPUT 2 LLVM_LIBRARY_DIR) list(GET CONFIG_OUTPUT 3 LLVM_MAIN_SRC_DIR) # Make use of LLVM CMake modules. file(TO_CMAKE_PATH ${LLVM_BINARY_DIR} LLVM_BINARY_DIR_CMAKE_STYLE) set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR_CMAKE_STYLE}/share/llvm/cmake") list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}") # Get some LLVM variables from LLVMConfig. include("${LLVM_CMAKE_PATH}/LLVMConfig.cmake") set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib) # Find Python interpreter. set(Python_ADDITIONAL_VERSIONS 2.7 2.6 2.5) include(FindPythonInterp) if(NOT PYTHONINTERP_FOUND) message(FATAL_ERROR " Unable to find Python interpreter required testing. Please install Python or specify the PYTHON_EXECUTABLE CMake variable.") endif() # Define default arguments to lit. set(LIT_ARGS_DEFAULT "-sv") if (MSVC OR XCODE) set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") endif() set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") endif() if("${COMPILER_RT_TEST_COMPILER}" MATCHES "clang[+]*$") set(COMPILER_RT_TEST_COMPILER_ID Clang) elseif("${COMPILER_RT_TEST_COMPILER}" MATCHES "clang.*.exe$") set(COMPILER_RT_TEST_COMPILER_ID Clang) else() set(COMPILER_RT_TEST_COMPILER_ID GNU) endif() # Tests using XFAIL use the first value in COMPILER_RT_TEST_TARGET_TRIPLE set(COMPILER_RT_TEST_TARGET_TRIPLE ${TARGET_TRIPLE} CACHE STRING "Default triple for cross-compiled executables") string(REPLACE "-" ";" TARGET_TRIPLE_LIST ${COMPILER_RT_TEST_TARGET_TRIPLE}) list(GET TARGET_TRIPLE_LIST 0 COMPILER_RT_TEST_TARGET_ARCH) list(GET TARGET_TRIPLE_LIST 1 COMPILER_RT_TEST_TARGET_OS) list(GET TARGET_TRIPLE_LIST 2 COMPILER_RT_TEST_TARGET_ABI) if ("${COMPILER_RT_TEST_TARGET_ABI}" STREQUAL "androideabi") set(ANDROID 1) endif() string(TOLOWER ${CMAKE_SYSTEM_NAME} COMPILER_RT_OS_DIR) set(COMPILER_RT_LIBRARY_OUTPUT_DIR ${COMPILER_RT_OUTPUT_DIR}/lib/${COMPILER_RT_OS_DIR}) set(COMPILER_RT_LIBRARY_INSTALL_DIR ${COMPILER_RT_INSTALL_PATH}/lib/${COMPILER_RT_OS_DIR}) # Add path for custom compiler-rt modules. set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" ${CMAKE_MODULE_PATH} ) include(CompilerRTUtils) set(COMPILER_RT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) set(COMPILER_RT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) # Setup custom SDK sysroots. set(COMPILER_RT_DARWIN_SDK_SYSROOT ${COMPILER_RT_SOURCE_DIR}/SDKs/darwin) set(COMPILER_RT_LINUX_SDK_SYSROOT ${COMPILER_RT_SOURCE_DIR}/SDKs/linux) set(COMPILER_RT_EXTRA_ANDROID_HEADERS ${COMPILER_RT_SOURCE_DIR}/android/include) # Detect whether the current target platform is 32-bit or 64-bit, and setup # the correct commandline flags needed to attempt to target 32-bit and 64-bit. if (NOT CMAKE_SIZEOF_VOID_P EQUAL 4 AND NOT CMAKE_SIZEOF_VOID_P EQUAL 8) message(FATAL_ERROR "Please use architecture with 4 or 8 byte pointers.") endif() if (NOT MSVC) set(TARGET_64_BIT_CFLAGS "-m64") set(TARGET_32_BIT_CFLAGS "-m32") else() set(TARGET_64_BIT_CFLAGS "") set(TARGET_32_BIT_CFLAGS "") endif() # List of architectures we can target. set(COMPILER_RT_SUPPORTED_ARCH) function(get_target_flags_for_arch arch out_var) list(FIND COMPILER_RT_SUPPORTED_ARCH ${arch} ARCH_INDEX) if(ARCH_INDEX EQUAL -1) message(FATAL_ERROR "Unsupported architecture: ${arch}") else() set(${out_var} ${TARGET_${arch}_CFLAGS} PARENT_SCOPE) endif() endfunction() # Try to compile a very simple source file to ensure we can target the given # platform. We use the results of these tests to build only the various target # runtime libraries supported by our current compilers cross-compiling # abilities. set(SIMPLE_SOURCE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/simple.cc) file(WRITE ${SIMPLE_SOURCE} "#include \n#include \nint main() {}\n") # test_target_arch( ) # Sets the target flags for a given architecture and determines if this # architecture is supported by trying to build a simple file. macro(test_target_arch arch) set(TARGET_${arch}_CFLAGS ${ARGN}) try_compile(CAN_TARGET_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_SOURCE} COMPILE_DEFINITIONS "${TARGET_${arch}_CFLAGS}" OUTPUT_VARIABLE TARGET_${arch}_OUTPUT CMAKE_FLAGS "-DCMAKE_EXE_LINKER_FLAGS:STRING=${TARGET_${arch}_CFLAGS}") if(${CAN_TARGET_${arch}}) list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch}) elseif("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "${arch}" OR "${arch}" STREQUAL "arm_android") # Bail out if we cannot target the architecture we plan to test. message(FATAL_ERROR "Cannot compile for ${arch}:\n${TARGET_${arch}_OUTPUT}") endif() endmacro() if(ANDROID) test_target_arch(arm_android "") else() if("${LLVM_NATIVE_ARCH}" STREQUAL "X86") if (NOT MSVC) test_target_arch(x86_64 ${TARGET_64_BIT_CFLAGS}) endif() test_target_arch(i386 ${TARGET_32_BIT_CFLAGS}) elseif("${LLVM_NATIVE_ARCH}" STREQUAL "PowerPC") test_target_arch(powerpc64 ${TARGET_64_BIT_CFLAGS}) elseif("${LLVM_NATIVE_ARCH}" STREQUAL "Mips") test_target_arch(mips "") endif() # Build ARM libraries if we are configured to test on ARM if("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "arm|aarch64") test_target_arch(arm "-march=armv7-a") test_target_arch(aarch64 "-march=armv8-a") endif() endif() # We support running instrumented tests when we're not cross compiling # and target a UNIX-like system or Windows. # We can run tests on Android even when we are cross-compiling. if(("${CMAKE_HOST_SYSTEM}" STREQUAL "${CMAKE_SYSTEM}" AND (UNIX OR MSVC)) OR ANDROID OR COMPILER_RT_EMULATOR) option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" ON) else() option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" OFF) endif() # Check if compiler-rt is built with libc++. find_flag_in_string("${CMAKE_CXX_FLAGS}" "-stdlib=libc++" COMPILER_RT_USES_LIBCXX) function(filter_available_targets out_var) set(archs) foreach(arch ${ARGN}) list(FIND COMPILER_RT_SUPPORTED_ARCH ${arch} ARCH_INDEX) if(NOT (ARCH_INDEX EQUAL -1) AND CAN_TARGET_${arch}) list(APPEND archs ${arch}) endif() endforeach() set(${out_var} ${archs} PARENT_SCOPE) endfunction() option(COMPILER_RT_DEBUG "Build runtimes with full debug info" OFF) # COMPILER_RT_DEBUG_PYBOOL is used by lit.common.configured.in. pythonize_bool(COMPILER_RT_DEBUG) option(COMPILER_RT_BUILD_SHARED_ASAN "Build shared version of AddressSanitizer runtime" OFF) #================================ # Setup Compiler Flags #================================ include(config-ix) if(MSVC) append_string_if(COMPILER_RT_HAS_W3_FLAG /W3 CMAKE_C_FLAGS CMAKE_CXX_FLAGS) else() append_string_if(COMPILER_RT_HAS_WALL_FLAG -Wall CMAKE_C_FLAGS CMAKE_CXX_FLAGS) endif() if(COMPILER_RT_ENABLE_WERROR) append_string_if(COMPILER_RT_HAS_WERROR_FLAG -Werror CMAKE_C_FLAGS CMAKE_CXX_FLAGS) append_string_if(COMPILER_RT_HAS_WX_FLAG /WX CMAKE_C_FLAGS CMAKE_CXX_FLAGS) endif() append_string_if(COMPILER_RT_HAS_STD_CXX11_FLAG -std=c++11 CMAKE_CXX_FLAGS) # Emulate C99 and C++11's __func__ for MSVC prior to 2013 CTP. if(NOT COMPILER_RT_HAS_FUNC_SYMBOL) add_definitions(-D__func__=__FUNCTION__) endif() # Provide some common commmandline flags for Sanitizer runtimes. append_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_FNO_BUILTIN_FLAG -fno-builtin SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG -fno-exceptions SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_FOMIT_FRAME_POINTER_FLAG -fomit-frame-pointer SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_FUNWIND_TABLES_FLAG -funwind-tables SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_FNO_STACK_PROTECTOR_FLAG -fno-stack-protector SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG -fvisibility=hidden SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_FNO_FUNCTION_SECTIONS_FLAG -fno-function-sections SANITIZER_COMMON_CFLAGS) if(MSVC) # Remove /MD flag so that it doesn't conflict with /MT. if(COMPILER_RT_HAS_MT_FLAG) string(REGEX REPLACE "(^| ) */MDd? *( |$)" "\\1 \\2" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") list(APPEND SANITIZER_COMMON_CFLAGS /MT) endif() append_if(COMPILER_RT_HAS_Oy_FLAG /Oy- SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_GS_FLAG /GS- SANITIZER_COMMON_CFLAGS) endif() # Build with optimization, unless we're in debug mode. If we're using MSVC, # always respect the optimization flags set by CMAKE_BUILD_TYPE instead. if(NOT COMPILER_RT_DEBUG AND NOT MSVC) list(APPEND SANITIZER_COMMON_CFLAGS -O3) endif() # Build sanitizer runtimes with debug info. if(COMPILER_RT_HAS_GLINE_TABLES_ONLY_FLAG) list(APPEND SANITIZER_COMMON_CFLAGS -gline-tables-only) elseif(COMPILER_RT_HAS_G_FLAG) list(APPEND SANITIZER_COMMON_CFLAGS -g) elseif(COMPILER_RT_HAS_Zi_FLAG) list(APPEND SANITIZER_COMMON_CFLAGS /Zi) endif() # Turn off several warnings. append_if(COMPILER_RT_HAS_WNO_GNU_FLAG -Wno-gnu SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_WNO_VARIADIC_MACROS_FLAG -Wno-variadic-macros SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_WNO_C99_EXTENSIONS_FLAG -Wno-c99-extensions SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_WNO_NON_VIRTUAL_DTOR_FLAG -Wno-non-virtual-dtor SANITIZER_COMMON_CFLAGS) append_if(COMPILER_RT_HAS_WD4722_FLAG /wd4722 SANITIZER_COMMON_CFLAGS) if(APPLE) # Obtain the iOS Simulator SDK path from xcodebuild. execute_process( COMMAND xcodebuild -version -sdk iphonesimulator Path OUTPUT_VARIABLE IOSSIM_SDK_DIR OUTPUT_STRIP_TRAILING_WHITESPACE ) string(REGEX MATCH "-mmacosx-version-min=" MACOSX_VERSION_MIN_FLAG "${CMAKE_CXX_FLAGS}") set(SANITIZER_COMMON_SUPPORTED_DARWIN_OS osx) if (IOSSIM_SDK_DIR AND NOT MACOSX_VERSION_MIN_FLAG) list(APPEND SANITIZER_COMMON_SUPPORTED_DARWIN_OS iossim) endif() if(COMPILER_RT_USES_LIBCXX) set(SANITIZER_MIN_OSX_VERSION 10.7) else() set(SANITIZER_MIN_OSX_VERSION 10.6) endif() set(DARWIN_osx_CFLAGS -mmacosx-version-min=${SANITIZER_MIN_OSX_VERSION}) set(DARWIN_iossim_CFLAGS -mios-simulator-version-min=7.0 -isysroot ${IOSSIM_SDK_DIR}) set(DARWIN_osx_LINKFLAGS) set(DARWIN_iossim_LINKFLAGS -Wl,-ios_simulator_version_min,7.0.0 -mios-simulator-version-min=7.0 -isysroot ${IOSSIM_SDK_DIR}) endif() # Architectures supported by Sanitizer runtimes. Specific sanitizers may # support only subset of these (e.g. TSan works on x86_64 only). filter_available_targets(SANITIZER_COMMON_SUPPORTED_ARCH x86_64 i386 powerpc64 arm aarch64 mips) filter_available_targets(ASAN_SUPPORTED_ARCH x86_64 i386 powerpc64 arm mips) filter_available_targets(DFSAN_SUPPORTED_ARCH x86_64) filter_available_targets(LSAN_SUPPORTED_ARCH x86_64) filter_available_targets(MSAN_SUPPORTED_ARCH x86_64) filter_available_targets(PROFILE_SUPPORTED_ARCH x86_64 i386 arm aarch64) filter_available_targets(TSAN_SUPPORTED_ARCH x86_64) filter_available_targets(UBSAN_SUPPORTED_ARCH x86_64 i386 arm aarch64) add_subdirectory(include) set(COMPILER_RT_LIBCXX_PATH ${LLVM_MAIN_SRC_DIR}/projects/libcxx) if(EXISTS ${COMPILER_RT_LIBCXX_PATH}/) set(COMPILER_RT_HAS_LIBCXX_SOURCES TRUE) else() set(COMPILER_RT_HAS_LIBCXX_SOURCES FALSE) endif() add_subdirectory(lib) if(COMPILER_RT_INCLUDE_TESTS) add_subdirectory(unittests) endif() add_subdirectory(test)