184 lines
8.4 KiB
CMake
184 lines
8.4 KiB
CMake
# 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.
|
|
|
|
include(CheckIncludeFile)
|
|
check_include_file(unwind.h HAVE_UNWIND_H)
|
|
|
|
# Top level target used to build all compiler-rt libraries.
|
|
add_custom_target(compiler-rt ALL)
|
|
add_custom_target(install-compiler-rt)
|
|
set_target_properties(compiler-rt PROPERTIES FOLDER "Compiler-RT Misc")
|
|
|
|
# Setting these variables from an LLVM build is sufficient that compiler-rt can
|
|
# construct the output paths, so it can behave as if it were in-tree here.
|
|
if (LLVM_LIBRARY_OUTPUT_INTDIR AND LLVM_RUNTIME_OUTPUT_INTDIR AND PACKAGE_VERSION)
|
|
set(LLVM_TREE_AVAILABLE On)
|
|
endif()
|
|
|
|
if (LLVM_TREE_AVAILABLE)
|
|
# 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)
|
|
set(COMPILER_RT_TEST_CXX_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++)
|
|
else()
|
|
set(COMPILER_RT_TEST_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang.exe)
|
|
set(COMPILER_RT_TEST_CXX_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")
|
|
set(COMPILER_RT_TEST_CXX_COMPILER ${CMAKE_CXX_COMPILER} CACHE PATH "C++ Compiler to use for testing")
|
|
endif()
|
|
|
|
if("${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()
|
|
|
|
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})
|
|
|
|
if(APPLE)
|
|
# On Darwin if /usr/include doesn't exist, the user probably has Xcode but not
|
|
# the command line tools. If this is the case, we need to find the OS X
|
|
# sysroot to pass to clang.
|
|
if(NOT EXISTS /usr/include)
|
|
execute_process(COMMAND xcodebuild -version -sdk macosx Path
|
|
OUTPUT_VARIABLE OSX_SYSROOT
|
|
ERROR_QUIET
|
|
OUTPUT_STRIP_TRAILING_WHITESPACE)
|
|
set(OSX_SYSROOT_FLAG "-isysroot${OSX_SYSROOT}")
|
|
endif()
|
|
|
|
option(COMPILER_RT_ENABLE_IOS "Enable building for iOS" Off)
|
|
option(COMPILER_RT_ENABLE_WATCHOS "Enable building for watchOS - Experimental" Off)
|
|
option(COMPILER_RT_ENABLE_TVOS "Enable building for tvOS - Experimental" Off)
|
|
endif()
|
|
|
|
if(WIN32 AND NOT MINGW AND NOT CYGWIN)
|
|
set(CMAKE_SHARED_LIBRARY_PREFIX_C "")
|
|
set(CMAKE_SHARED_LIBRARY_PREFIX_CXX "")
|
|
set(CMAKE_STATIC_LIBRARY_PREFIX_C "")
|
|
set(CMAKE_STATIC_LIBRARY_PREFIX_CXX "")
|
|
set(CMAKE_STATIC_LIBRARY_SUFFIX_C ".lib")
|
|
set(CMAKE_STATIC_LIBRARY_SUFFIX_CXX ".lib")
|
|
endif()
|
|
|
|
macro(test_targets)
|
|
# Find and run MSVC (not clang-cl) and get its version. This will tell clang-cl
|
|
# what version of MSVC to pretend to be so that the STL works.
|
|
set(MSVC_VERSION_FLAG "")
|
|
if (MSVC)
|
|
# Find and run MSVC (not clang-cl) and get its version. This will tell
|
|
# clang-cl what version of MSVC to pretend to be so that the STL works.
|
|
execute_process(COMMAND "$ENV{VSINSTALLDIR}/VC/bin/cl.exe"
|
|
OUTPUT_QUIET
|
|
ERROR_VARIABLE MSVC_COMPAT_VERSION
|
|
)
|
|
string(REGEX REPLACE "^.*Compiler Version ([0-9.]+) for .*$" "\\1"
|
|
MSVC_COMPAT_VERSION "${MSVC_COMPAT_VERSION}")
|
|
if (MSVC_COMPAT_VERSION MATCHES "^[0-9].+$")
|
|
set(MSVC_VERSION_FLAG "-fms-compatibility-version=${MSVC_COMPAT_VERSION}")
|
|
# Add this flag into the host build if this is clang-cl.
|
|
if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
|
|
append("${MSVC_VERSION_FLAG}" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
elseif (COMPILER_RT_TEST_COMPILER_ID MATCHES "Clang")
|
|
# Add this flag to test compiles to suppress clang's auto-detection
|
|
# logic.
|
|
append("${MSVC_VERSION_FLAG}" COMPILER_RT_TEST_COMPILER_CFLAGS)
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
# Generate the COMPILER_RT_SUPPORTED_ARCH list.
|
|
if(ANDROID)
|
|
# Examine compiler output to determine target architecture.
|
|
detect_target_arch()
|
|
set(COMPILER_RT_OS_SUFFIX "-android")
|
|
elseif(NOT APPLE) # Supported archs for Apple platforms are generated later
|
|
if("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "i[2-6]86|x86|amd64")
|
|
if(NOT MSVC)
|
|
test_target_arch(x86_64 "" "-m64")
|
|
# FIXME: We build runtimes for both i686 and i386, as "clang -m32" may
|
|
# target different variant than "$CMAKE_C_COMPILER -m32". This part should
|
|
# be gone after we resolve PR14109.
|
|
test_target_arch(i686 __i686__ "-m32")
|
|
test_target_arch(i386 __i386__ "-m32")
|
|
else()
|
|
if (CMAKE_SIZEOF_VOID_P EQUAL 4)
|
|
test_target_arch(i386 "" "")
|
|
else()
|
|
test_target_arch(x86_64 "" "")
|
|
endif()
|
|
endif()
|
|
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "powerpc")
|
|
TEST_BIG_ENDIAN(HOST_IS_BIG_ENDIAN)
|
|
if(HOST_IS_BIG_ENDIAN)
|
|
test_target_arch(powerpc64 "" "-m64")
|
|
else()
|
|
test_target_arch(powerpc64le "" "-m64")
|
|
endif()
|
|
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "s390x")
|
|
test_target_arch(s390x "" "")
|
|
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "mipsel|mips64el")
|
|
# Gcc doesn't accept -m32/-m64 so we do the next best thing and use
|
|
# -mips32r2/-mips64r2. We don't use -mips1/-mips3 because we want to match
|
|
# clang's default CPU's. In the 64-bit case, we must also specify the ABI
|
|
# since the default ABI differs between gcc and clang.
|
|
# FIXME: Ideally, we would build the N32 library too.
|
|
test_target_arch(mipsel "" "-mips32r2" "--target=mipsel-linux-gnu")
|
|
test_target_arch(mips64el "" "-mips64r2" "--target=mips64el-linux-gnu" "-mabi=64")
|
|
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "mips")
|
|
test_target_arch(mips "" "-mips32r2" "--target=mips-linux-gnu")
|
|
test_target_arch(mips64 "" "-mips64r2" "--target=mips64-linux-gnu" "-mabi=64")
|
|
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "arm")
|
|
if(WIN32)
|
|
test_target_arch(arm "" "" "")
|
|
else()
|
|
test_target_arch(arm "" "-march=armv7-a" "-mfloat-abi=soft")
|
|
test_target_arch(armhf "" "-march=armv7-a" "-mfloat-abi=hard")
|
|
endif()
|
|
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "aarch32")
|
|
test_target_arch(aarch32 "" "-march=armv8-a")
|
|
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "aarch64")
|
|
test_target_arch(aarch64 "" "-march=armv8-a")
|
|
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "wasm32")
|
|
test_target_arch(wasm32 "" "--target=wasm32-unknown-unknown")
|
|
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "wasm64")
|
|
test_target_arch(wasm64 "" "--target=wasm64-unknown-unknown")
|
|
endif()
|
|
set(COMPILER_RT_OS_SUFFIX "")
|
|
endif()
|
|
endmacro()
|