887f26d470
This change adds a support for multiarch style runtimes layout, so in addition to the existing layout where runtimes get installed to: lib/clang/$version/lib/$os Clang now allows runtimes to be installed to: lib/clang/$version/$target/lib This also includes libc++, libc++abi and libunwind; today those are assumed to be in Clang library directory built for host, with the new layout it is possible to install libc++, libc++abi and libunwind into the runtime directory built for different targets. The use of new layout is enabled by setting the LLVM_ENABLE_RUNTIME_TARGET_DIR CMake variable and is supported by both projects and runtimes layouts. The runtimes CMake build has been further modified to use the new layout when building runtimes for multiple targets. Differential Revision: https://reviews.llvm.org/D45604 llvm-svn: 335809
223 lines
9.6 KiB
CMake
223 lines
9.6 KiB
CMake
# 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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include(CheckIncludeFile)
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include(CheckCXXSourceCompiles)
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check_include_file(unwind.h HAVE_UNWIND_H)
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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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add_custom_target(install-compiler-rt)
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add_custom_target(install-compiler-rt-stripped)
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set_property(
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TARGET
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compiler-rt
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install-compiler-rt
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install-compiler-rt-stripped
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PROPERTY
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FOLDER "Compiler-RT Misc"
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)
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# Setting these variables from an LLVM build is sufficient that compiler-rt can
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# construct the output paths, so it can behave as if it were in-tree here.
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if (LLVM_LIBRARY_OUTPUT_INTDIR AND LLVM_RUNTIME_OUTPUT_INTDIR AND PACKAGE_VERSION)
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set(LLVM_TREE_AVAILABLE On)
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endif()
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if (LLVM_TREE_AVAILABLE)
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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 ${CMAKE_CXX_COMPILER} CACHE PATH "C++ Compiler to use for testing")
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endif()
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if("${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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if(NOT DEFINED COMPILER_RT_OS_DIR)
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string(TOLOWER ${CMAKE_SYSTEM_NAME} COMPILER_RT_OS_DIR)
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endif()
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if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
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set(COMPILER_RT_LIBRARY_OUTPUT_DIR
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${COMPILER_RT_OUTPUT_DIR})
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set(COMPILER_RT_LIBRARY_INSTALL_DIR
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${COMPILER_RT_INSTALL_PATH})
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else(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR)
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set(COMPILER_RT_LIBRARY_OUTPUT_DIR
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${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/${COMPILER_RT_OS_DIR})
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endif()
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if(APPLE)
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# On Darwin if /usr/include doesn't exist, the user probably has Xcode but not
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# the command line tools. If this is the case, we need to find the OS X
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# sysroot to pass to clang.
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if(NOT EXISTS /usr/include)
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execute_process(COMMAND xcodebuild -version -sdk macosx Path
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OUTPUT_VARIABLE OSX_SYSROOT
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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set(OSX_SYSROOT_FLAG "-isysroot${OSX_SYSROOT}")
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endif()
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option(COMPILER_RT_ENABLE_IOS "Enable building for iOS" On)
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option(COMPILER_RT_ENABLE_WATCHOS "Enable building for watchOS - Experimental" Off)
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option(COMPILER_RT_ENABLE_TVOS "Enable building for tvOS - Experimental" Off)
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else()
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option(COMPILER_RT_DEFAULT_TARGET_ONLY "Build builtins only for the default target" Off)
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endif()
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if(WIN32 AND NOT MINGW AND NOT CYGWIN)
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set(CMAKE_SHARED_LIBRARY_PREFIX_C "")
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set(CMAKE_SHARED_LIBRARY_PREFIX_CXX "")
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set(CMAKE_STATIC_LIBRARY_PREFIX_C "")
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set(CMAKE_STATIC_LIBRARY_PREFIX_CXX "")
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set(CMAKE_STATIC_LIBRARY_SUFFIX_C ".lib")
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set(CMAKE_STATIC_LIBRARY_SUFFIX_CXX ".lib")
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endif()
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macro(test_targets)
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# Find and run MSVC (not clang-cl) and get its version. This will tell clang-cl
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# what version of MSVC to pretend to be so that the STL works.
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set(MSVC_VERSION_FLAG "")
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if (MSVC)
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# Find and run MSVC (not clang-cl) and get its version. This will tell
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# clang-cl what version of MSVC to pretend to be so that the STL works.
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execute_process(COMMAND "$ENV{VSINSTALLDIR}/VC/bin/cl.exe"
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OUTPUT_QUIET
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ERROR_VARIABLE MSVC_COMPAT_VERSION
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)
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string(REGEX REPLACE "^.*Compiler Version ([0-9.]+) for .*$" "\\1"
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MSVC_COMPAT_VERSION "${MSVC_COMPAT_VERSION}")
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if (MSVC_COMPAT_VERSION MATCHES "^[0-9].+$")
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set(MSVC_VERSION_FLAG "-fms-compatibility-version=${MSVC_COMPAT_VERSION}")
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# Add this flag into the host build if this is clang-cl.
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if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
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append("${MSVC_VERSION_FLAG}" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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elseif (COMPILER_RT_TEST_COMPILER_ID MATCHES "Clang")
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# Add this flag to test compiles to suppress clang's auto-detection
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# logic.
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append("${MSVC_VERSION_FLAG}" COMPILER_RT_TEST_COMPILER_CFLAGS)
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endif()
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endif()
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endif()
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# Generate the COMPILER_RT_SUPPORTED_ARCH list.
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if(ANDROID)
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# Examine compiler output to determine target architecture.
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detect_target_arch()
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set(COMPILER_RT_OS_SUFFIX "-android")
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elseif(NOT APPLE) # Supported archs for Apple platforms are generated later
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if(COMPILER_RT_DEFAULT_TARGET_ONLY)
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add_default_target_arch(${COMPILER_RT_DEFAULT_TARGET_ARCH})
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "i[2-6]86|x86|amd64")
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if(NOT MSVC)
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if(CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
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if (CMAKE_SIZEOF_VOID_P EQUAL 4)
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test_target_arch(i386 __i386__ "-m32")
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else()
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test_target_arch(x86_64 "" "-m64")
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endif()
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else()
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test_target_arch(x86_64 "" "-m64")
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test_target_arch(i386 __i386__ "-m32")
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endif()
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else()
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if (CMAKE_SIZEOF_VOID_P EQUAL 4)
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test_target_arch(i386 "" "")
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else()
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test_target_arch(x86_64 "" "")
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endif()
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endif()
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "powerpc")
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# Strip out -nodefaultlibs when calling TEST_BIG_ENDIAN. Configuration
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# will fail with this option when building with a sanitizer.
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cmake_push_check_state()
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string(REPLACE "-nodefaultlibs" "" CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
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TEST_BIG_ENDIAN(HOST_IS_BIG_ENDIAN)
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cmake_pop_check_state()
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if(HOST_IS_BIG_ENDIAN)
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test_target_arch(powerpc64 "" "-m64")
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else()
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test_target_arch(powerpc64le "" "-m64")
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endif()
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "s390x")
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test_target_arch(s390x "" "")
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "mipsel|mips64el")
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# Gcc doesn't accept -m32/-m64 so we do the next best thing and use
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# -mips32r2/-mips64r2. We don't use -mips1/-mips3 because we want to match
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# clang's default CPU's. In the 64-bit case, we must also specify the ABI
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# since the default ABI differs between gcc and clang.
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# FIXME: Ideally, we would build the N32 library too.
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test_target_arch(mipsel "" "-mips32r2" "--target=mipsel-linux-gnu")
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test_target_arch(mips64el "" "-mips64r2" "--target=mips64el-linux-gnu" "-mabi=64")
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "mips")
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test_target_arch(mips "" "-mips32r2" "--target=mips-linux-gnu")
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test_target_arch(mips64 "" "-mips64r2" "--target=mips64-linux-gnu" "-mabi=64")
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "arm")
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if(WIN32)
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test_target_arch(arm "" "" "")
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else()
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test_target_arch(arm "" "-march=armv7-a" "-mfloat-abi=soft")
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test_target_arch(armhf "" "-march=armv7-a" "-mfloat-abi=hard")
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test_target_arch(armv6m "" "-march=armv6m" "-mfloat-abi=soft")
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endif()
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "aarch32")
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test_target_arch(aarch32 "" "-march=armv8-a")
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "aarch64")
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test_target_arch(aarch64 "" "-march=armv8-a")
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "riscv32")
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test_target_arch(riscv32 "" "")
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "riscv64")
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test_target_arch(riscv64 "" "")
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "wasm32")
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test_target_arch(wasm32 "" "--target=wasm32-unknown-unknown")
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "wasm64")
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test_target_arch(wasm64 "" "--target=wasm64-unknown-unknown")
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endif()
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set(COMPILER_RT_OS_SUFFIX "")
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endif()
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endmacro()
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