llvm-project/compiler-rt/CMakeLists.txt

391 lines
15 KiB
CMake

# 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 ${SIMPLE_SOURCE} "#include <stdlib.h>\n#include <limits>\nint main() {}\n")
# test_target_arch(<arch> <target flags...>)
# Sets the target flags for a given architecture and determines if this
# architecture is supported by trying to build a simple file.
macro(test_target_arch arch)
set(TARGET_${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)