| #=============================================================================== |
| # Setup Project |
| #=============================================================================== |
| |
| cmake_minimum_required(VERSION 3.4.3) |
| |
| if (POLICY CMP0042) |
| cmake_policy(SET CMP0042 NEW) # Set MACOSX_RPATH=YES by default |
| endif() |
| |
| # Add path for custom modules |
| set(CMAKE_MODULE_PATH |
| "${CMAKE_CURRENT_SOURCE_DIR}/cmake" |
| "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" |
| ${CMAKE_MODULE_PATH} |
| ) |
| |
| if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) |
| project(libunwind) |
| |
| # Rely on llvm-config. |
| set(CONFIG_OUTPUT) |
| if(NOT LLVM_CONFIG_PATH) |
| find_program(LLVM_CONFIG_PATH "llvm-config") |
| endif() |
| if (DEFINED LLVM_PATH) |
| set(LLVM_INCLUDE_DIR ${LLVM_INCLUDE_DIR} CACHE PATH "Path to llvm/include") |
| set(LLVM_PATH ${LLVM_PATH} CACHE PATH "Path to LLVM source tree") |
| set(LLVM_MAIN_SRC_DIR ${LLVM_PATH}) |
| set(LLVM_CMAKE_PATH "${LLVM_PATH}/cmake/modules") |
| elseif(LLVM_CONFIG_PATH) |
| message(STATUS "Found LLVM_CONFIG_PATH as ${LLVM_CONFIG_PATH}") |
| set(CONFIG_COMMAND ${LLVM_CONFIG_PATH} "--includedir" "--prefix" "--src-root") |
| execute_process(COMMAND ${CONFIG_COMMAND} |
| RESULT_VARIABLE HAD_ERROR |
| OUTPUT_VARIABLE CONFIG_OUTPUT) |
| if (NOT HAD_ERROR) |
| string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" |
| CONFIG_OUTPUT ${CONFIG_OUTPUT}) |
| else() |
| string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}") |
| message(STATUS "${CONFIG_COMMAND_STR}") |
| message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}") |
| endif() |
| |
| list(GET CONFIG_OUTPUT 0 INCLUDE_DIR) |
| list(GET CONFIG_OUTPUT 1 LLVM_OBJ_ROOT) |
| list(GET CONFIG_OUTPUT 2 MAIN_SRC_DIR) |
| |
| set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Path to llvm/include") |
| set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree") |
| set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree") |
| set(LLVM_LIT_PATH "${LLVM_PATH}/utils/lit/lit.py") |
| |
| # --cmakedir is supported since llvm r291218 (4.0 release) |
| execute_process( |
| COMMAND ${LLVM_CONFIG_PATH} --cmakedir |
| RESULT_VARIABLE HAD_ERROR |
| OUTPUT_VARIABLE CONFIG_OUTPUT |
| ERROR_QUIET) |
| if(NOT HAD_ERROR) |
| string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_PATH_FROM_LLVM_CONFIG) |
| file(TO_CMAKE_PATH "${LLVM_CMAKE_PATH_FROM_LLVM_CONFIG}" LLVM_CMAKE_PATH) |
| else() |
| file(TO_CMAKE_PATH "${LLVM_BINARY_DIR}" LLVM_BINARY_DIR_CMAKE_STYLE) |
| set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR_CMAKE_STYLE}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm") |
| endif() |
| else() |
| message(WARNING "UNSUPPORTED LIBUNWIND CONFIGURATION DETECTED: " |
| "llvm-config not found and LLVM_MAIN_SRC_DIR not defined. " |
| "Reconfigure with -DLLVM_CONFIG=path/to/llvm-config " |
| "or -DLLVM_PATH=path/to/llvm-source-root.") |
| endif() |
| |
| if (EXISTS ${LLVM_CMAKE_PATH}) |
| # Enable warnings, otherwise -w gets added to the cflags by HandleLLVMOptions. |
| set(LLVM_ENABLE_WARNINGS ON) |
| list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}") |
| include("${LLVM_CMAKE_PATH}/AddLLVM.cmake") |
| include("${LLVM_CMAKE_PATH}/HandleLLVMOptions.cmake") |
| else() |
| message(WARNING "Not found: ${LLVM_CMAKE_PATH}") |
| endif() |
| |
| set(PACKAGE_NAME libunwind) |
| set(PACKAGE_VERSION 9.0.0svn) |
| set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}") |
| set(PACKAGE_BUGREPORT "llvm-bugs@lists.llvm.org") |
| |
| if (EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) |
| set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) |
| else() |
| # Seek installed Lit. |
| find_program(LLVM_LIT "lit.py" ${LLVM_MAIN_SRC_DIR}/utils/lit |
| DOC "Path to lit.py") |
| endif() |
| |
| if (LLVM_LIT) |
| # Define the default arguments to use with 'lit', and an option for the user |
| # to override. |
| set(LIT_ARGS_DEFAULT "-sv") |
| if (MSVC OR XCODE) |
| set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") |
| endif() |
| set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") |
| |
| # On Win32 hosts, provide an option to specify the path to the GnuWin32 tools. |
| if (WIN32 AND NOT CYGWIN) |
| set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools") |
| endif() |
| else() |
| set(LLVM_INCLUDE_TESTS OFF) |
| endif() |
| |
| set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}) |
| set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}) |
| else() |
| set(LLVM_LIT "${CMAKE_SOURCE_DIR}/utils/lit/lit.py") |
| endif() |
| |
| #=============================================================================== |
| # Setup CMake Options |
| #=============================================================================== |
| include(CMakeDependentOption) |
| include(HandleCompilerRT) |
| |
| # Define options. |
| option(LIBUNWIND_BUILD_32_BITS "Build 32 bit libunwind" ${LLVM_BUILD_32_BITS}) |
| option(LIBUNWIND_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON) |
| option(LIBUNWIND_ENABLE_PEDANTIC "Compile with pedantic enabled." ON) |
| option(LIBUNWIND_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF) |
| option(LIBUNWIND_ENABLE_SHARED "Build libunwind as a shared library." ON) |
| option(LIBUNWIND_ENABLE_STATIC "Build libunwind as a static library." ON) |
| option(LIBUNWIND_ENABLE_CROSS_UNWINDING "Enable cross-platform unwinding support." OFF) |
| option(LIBUNWIND_ENABLE_ARM_WMMX "Enable unwinding support for ARM WMMX registers." OFF) |
| option(LIBUNWIND_ENABLE_THREADS "Build libunwind with threading support." ON) |
| option(LIBUNWIND_USE_COMPILER_RT "Use compiler-rt instead of libgcc" OFF) |
| option(LIBUNWIND_INCLUDE_DOCS "Build the libunwind documentation." ${LLVM_INCLUDE_DOCS}) |
| |
| set(LIBUNWIND_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}" CACHE STRING |
| "Define suffix of library directory name (32/64)") |
| option(LIBUNWIND_INSTALL_LIBRARY "Install the libunwind library." ON) |
| cmake_dependent_option(LIBUNWIND_INSTALL_STATIC_LIBRARY |
| "Install the static libunwind library." ON |
| "LIBUNWIND_ENABLE_STATIC;LIBUNWIND_INSTALL_LIBRARY" OFF) |
| cmake_dependent_option(LIBUNWIND_INSTALL_SHARED_LIBRARY |
| "Install the shared libunwind library." ON |
| "LIBUNWIND_ENABLE_SHARED;LIBUNWIND_INSTALL_LIBRARY" OFF) |
| set(LIBUNWIND_TARGET_TRIPLE "" CACHE STRING "Target triple for cross compiling.") |
| set(LIBUNWIND_GCC_TOOLCHAIN "" CACHE PATH "GCC toolchain for cross compiling.") |
| set(LIBUNWIND_SYSROOT "" CACHE PATH "Sysroot for cross compiling.") |
| set(LIBUNWIND_TEST_LINKER_FLAGS "" CACHE STRING |
| "Additional linker flags for test programs.") |
| set(LIBUNWIND_TEST_COMPILER_FLAGS "" CACHE STRING |
| "Additional compiler flags for test programs.") |
| |
| if (NOT LIBUNWIND_ENABLE_SHARED AND NOT LIBUNWIND_ENABLE_STATIC) |
| message(FATAL_ERROR "libunwind must be built as either a shared or static library.") |
| endif() |
| |
| # Check that we can build with 32 bits if requested. |
| if (CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32) |
| if (LIBUNWIND_BUILD_32_BITS AND NOT LLVM_BUILD_32_BITS) # Don't duplicate the output from LLVM |
| message(STATUS "Building 32 bits executables and libraries.") |
| endif() |
| elseif(LIBUNWIND_BUILD_32_BITS) |
| message(FATAL_ERROR "LIBUNWIND_BUILD_32_BITS=ON is not supported on this platform.") |
| endif() |
| |
| option(LIBUNWIND_HERMETIC_STATIC_LIBRARY |
| "Do not export any symbols from the static library." OFF) |
| |
| #=============================================================================== |
| # Configure System |
| #=============================================================================== |
| |
| # Add path for custom modules |
| set(CMAKE_MODULE_PATH |
| "${CMAKE_CURRENT_SOURCE_DIR}/cmake" |
| ${CMAKE_MODULE_PATH}) |
| |
| set(LIBUNWIND_COMPILER ${CMAKE_CXX_COMPILER}) |
| set(LIBUNWIND_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) |
| set(LIBUNWIND_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) |
| |
| string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION |
| ${PACKAGE_VERSION}) |
| |
| if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE) |
| set(DEFAULT_INSTALL_PREFIX lib${LLVM_LIBDIR_SUFFIX}/clang/${CLANG_VERSION}/${LLVM_DEFAULT_TARGET_TRIPLE}/) |
| set(LIBUNWIND_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/clang/${CLANG_VERSION}/${LLVM_DEFAULT_TARGET_TRIPLE}/lib${LIBUNWIND_LIBDIR_SUFFIX}) |
| elseif(LLVM_LIBRARY_OUTPUT_INTDIR) |
| set(LIBUNWIND_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}) |
| else() |
| set(LIBUNWIND_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBUNWIND_LIBDIR_SUFFIX}) |
| endif() |
| |
| set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBUNWIND_LIBRARY_DIR}) |
| set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIBUNWIND_LIBRARY_DIR}) |
| set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LIBUNWIND_LIBRARY_DIR}) |
| |
| set(LIBUNWIND_INSTALL_PREFIX ${DEFAULT_INSTALL_PREFIX} CACHE STRING |
| "Define libunwind destination prefix.") |
| |
| set(LIBUNWIND_C_FLAGS "") |
| set(LIBUNWIND_CXX_FLAGS "") |
| set(LIBUNWIND_COMPILE_FLAGS "") |
| set(LIBUNWIND_LINK_FLAGS "") |
| |
| # Get required flags. |
| macro(unwind_append_if list condition var) |
| if (${condition}) |
| list(APPEND ${list} ${var}) |
| endif() |
| endmacro() |
| |
| macro(add_target_flags) |
| foreach(value ${ARGN}) |
| set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${value}") |
| set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${value}") |
| list(APPEND LIBUNWIND_COMPILE_FLAGS ${value}) |
| list(APPEND LIBUNWIND_LINK_FLAGS ${value}) |
| endforeach() |
| endmacro() |
| |
| macro(add_target_flags_if condition) |
| if (${condition}) |
| add_target_flags(${ARGN}) |
| endif() |
| endmacro() |
| |
| add_target_flags_if(LIBUNWIND_BUILD_32_BITS "-m32") |
| |
| if(LIBUNWIND_TARGET_TRIPLE) |
| add_target_flags("--target=${LIBUNWIND_TARGET_TRIPLE}") |
| elseif(CMAKE_CXX_COMPILER_TARGET) |
| set(LIBUNWIND_TARGET_TRIPLE "${CMAKE_CXX_COMPILER_TARGET}") |
| endif() |
| if(LIBUNWIND_GCC_TOOLCHAIN) |
| add_target_flags("--gcc-toolchain=${LIBUNWIND_GCC_TOOLCHAIN}") |
| elseif(CMAKE_CXX_COMPILER_EXTERNAL_TOOLCHAIN) |
| set(LIBUNWIND_GCC_TOOLCHAIN "${CMAKE_CXX_COMPILER_EXTERNAL_TOOLCHAIN}") |
| endif() |
| if(LIBUNWIND_SYSROOT) |
| add_target_flags("--sysroot=${LIBUNWIND_SYSROOT}") |
| elseif(CMAKE_SYSROOT) |
| set(LIBUNWIND_SYSROOT "${CMAKE_SYSROOT}") |
| endif() |
| |
| if (LIBUNWIND_TARGET_TRIPLE) |
| set(TARGET_TRIPLE "${LIBUNWIND_TARGET_TRIPLE}") |
| endif() |
| |
| # Configure compiler. |
| include(config-ix) |
| |
| if (LIBUNWIND_USE_COMPILER_RT AND NOT LIBUNWIND_HAS_NODEFAULTLIBS_FLAG) |
| list(APPEND LIBUNWIND_LINK_FLAGS "-rtlib=compiler-rt") |
| endif() |
| |
| #=============================================================================== |
| # Setup Compiler Flags |
| #=============================================================================== |
| |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WERROR_FLAG -Werror=return-type) |
| |
| # Get warning flags |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_W_FLAG -W) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WALL_FLAG -Wall) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WCHAR_SUBSCRIPTS_FLAG -Wchar-subscripts) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WCONVERSION_FLAG -Wconversion) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WMISMATCHED_TAGS_FLAG -Wmismatched-tags) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WMISSING_BRACES_FLAG -Wmissing-braces) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WNEWLINE_EOF_FLAG -Wnewline-eof) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WNO_UNUSED_FUNCTION_FLAG -Wno-unused-function) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSHADOW_FLAG -Wshadow) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSHORTEN_64_TO_32_FLAG -Wshorten-64-to-32) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSIGN_COMPARE_FLAG -Wsign-compare) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSIGN_CONVERSION_FLAG -Wsign-conversion) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSTRICT_ALIASING_FLAG -Wstrict-aliasing=2) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSTRICT_OVERFLOW_FLAG -Wstrict-overflow=4) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WUNUSED_PARAMETER_FLAG -Wunused-parameter) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WUNUSED_VARIABLE_FLAG -Wunused-variable) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WWRITE_STRINGS_FLAG -Wwrite-strings) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WUNDEF_FLAG -Wundef) |
| |
| if (LIBUNWIND_ENABLE_WERROR) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WERROR_FLAG -Werror) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WX_FLAG -WX) |
| else() |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WNO_ERROR_FLAG -Wno-error) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_NO_WX_FLAG -WX-) |
| endif() |
| |
| if (LIBUNWIND_ENABLE_PEDANTIC) |
| unwind_append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_PEDANTIC_FLAG -pedantic) |
| endif() |
| |
| # Get feature flags. |
| # Exceptions |
| # Catches C++ exceptions only and tells the compiler to assume that extern C |
| # functions never throw a C++ exception. |
| unwind_append_if(LIBUNWIND_CXX_FLAGS LIBUNWIND_HAS_FSTRICT_ALIASING_FLAG -fstrict-aliasing) |
| unwind_append_if(LIBUNWIND_CXX_FLAGS LIBUNWIND_HAS_EHSC_FLAG -EHsc) |
| |
| unwind_append_if(LIBUNWIND_C_FLAGS LIBUNWIND_HAS_FUNWIND_TABLES -funwind-tables) |
| |
| # Ensure that we don't depend on C++ standard library. |
| unwind_append_if(LIBUNWIND_CXX_FLAGS LIBUNWIND_HAS_NOSTDINCXX_FLAG -nostdinc++) |
| |
| # Assert |
| string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE) |
| if (LIBUNWIND_ENABLE_ASSERTIONS) |
| # MSVC doesn't like _DEBUG on release builds. See PR 4379. |
| if (NOT MSVC) |
| list(APPEND LIBUNWIND_COMPILE_FLAGS -D_DEBUG) |
| endif() |
| |
| # On Release builds cmake automatically defines NDEBUG, so we |
| # explicitly undefine it: |
| if (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE") |
| list(APPEND LIBUNWIND_COMPILE_FLAGS -UNDEBUG) |
| endif() |
| else() |
| if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE") |
| list(APPEND LIBUNWIND_COMPILE_FLAGS -DNDEBUG) |
| endif() |
| endif() |
| |
| # Cross-unwinding |
| if (NOT LIBUNWIND_ENABLE_CROSS_UNWINDING) |
| list(APPEND LIBUNWIND_COMPILE_FLAGS -D_LIBUNWIND_IS_NATIVE_ONLY) |
| endif() |
| |
| # Threading-support |
| if (NOT LIBUNWIND_ENABLE_THREADS) |
| list(APPEND LIBUNWIND_COMPILE_FLAGS -D_LIBUNWIND_HAS_NO_THREADS) |
| endif() |
| |
| # ARM WMMX register support |
| if (LIBUNWIND_ENABLE_ARM_WMMX) |
| # __ARM_WMMX is a compiler pre-define (as per the ACLE 2.0). Clang does not |
| # define this macro for any supported target at present. Therefore, here we |
| # provide the option to explicitly enable support for WMMX registers in the |
| # unwinder. |
| list(APPEND LIBUNWIND_COMPILE_FLAGS -D__ARM_WMMX) |
| endif() |
| |
| # This is the _ONLY_ place where add_definitions is called. |
| if (MSVC) |
| add_definitions(-D_CRT_SECURE_NO_WARNINGS) |
| endif() |
| |
| # Disable DLL annotations on Windows for static builds. |
| if (WIN32 AND LIBUNWIND_ENABLE_STATIC AND NOT LIBUNWIND_ENABLE_SHARED) |
| add_definitions(-D_LIBUNWIND_DISABLE_VISIBILITY_ANNOTATIONS) |
| endif() |
| |
| #=============================================================================== |
| # Setup Source Code |
| #=============================================================================== |
| |
| include_directories(include) |
| |
| add_subdirectory(src) |
| |
| if (LIBUNWIND_INCLUDE_DOCS) |
| add_subdirectory(docs) |
| endif() |
| |
| if (EXISTS ${LLVM_CMAKE_PATH}) |
| add_subdirectory(test) |
| endif() |