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323 lines
12 KiB
323 lines
12 KiB
#=============================================================================== |
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# Setup Project |
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#=============================================================================== |
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cmake_minimum_required(VERSION 3.4.3) |
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if (POLICY CMP0042) |
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cmake_policy(SET CMP0042 NEW) # Set MACOSX_RPATH=YES by default |
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endif() |
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# Add path for custom modules |
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set(CMAKE_MODULE_PATH |
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake" |
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" |
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${CMAKE_MODULE_PATH} |
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) |
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if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) |
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project(libunwind) |
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# Rely on llvm-config. |
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set(CONFIG_OUTPUT) |
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if(NOT LLVM_CONFIG_PATH) |
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find_program(LLVM_CONFIG_PATH "llvm-config") |
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endif() |
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if (DEFINED LLVM_PATH) |
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set(LLVM_INCLUDE_DIR ${LLVM_INCLUDE_DIR} CACHE PATH "Path to llvm/include") |
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set(LLVM_PATH ${LLVM_PATH} CACHE PATH "Path to LLVM source tree") |
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set(LLVM_MAIN_SRC_DIR ${LLVM_PATH}) |
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set(LLVM_CMAKE_PATH "${LLVM_PATH}/cmake/modules") |
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elseif(LLVM_CONFIG_PATH) |
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message(STATUS "Found LLVM_CONFIG_PATH as ${LLVM_CONFIG_PATH}") |
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set(CONFIG_COMMAND ${LLVM_CONFIG_PATH} "--includedir" "--prefix" "--src-root") |
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execute_process(COMMAND ${CONFIG_COMMAND} |
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RESULT_VARIABLE HAD_ERROR |
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OUTPUT_VARIABLE CONFIG_OUTPUT) |
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if (NOT HAD_ERROR) |
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string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" |
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CONFIG_OUTPUT ${CONFIG_OUTPUT}) |
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else() |
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string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}") |
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message(STATUS "${CONFIG_COMMAND_STR}") |
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message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}") |
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endif() |
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list(GET CONFIG_OUTPUT 0 INCLUDE_DIR) |
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list(GET CONFIG_OUTPUT 1 LLVM_OBJ_ROOT) |
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list(GET CONFIG_OUTPUT 2 MAIN_SRC_DIR) |
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set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Path to llvm/include") |
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set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree") |
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set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree") |
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set(LLVM_LIT_PATH "${LLVM_PATH}/utils/lit/lit.py") |
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# --cmakedir is supported since llvm r291218 (4.0 release) |
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execute_process( |
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COMMAND ${LLVM_CONFIG_PATH} --cmakedir |
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RESULT_VARIABLE HAD_ERROR |
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OUTPUT_VARIABLE CONFIG_OUTPUT |
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ERROR_QUIET) |
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if(NOT HAD_ERROR) |
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string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_PATH) |
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else() |
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set(LLVM_CMAKE_PATH |
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"${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm") |
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endif() |
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else() |
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message(FATAL_ERROR "llvm-config not found and LLVM_MAIN_SRC_DIR not defined. " |
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"Reconfigure with -DLLVM_CONFIG=path/to/llvm-config " |
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"or -DLLVM_PATH=path/to/llvm-source-root.") |
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endif() |
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if (EXISTS ${LLVM_CMAKE_PATH}) |
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list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}") |
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include("${LLVM_CMAKE_PATH}/AddLLVM.cmake") |
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include("${LLVM_CMAKE_PATH}/HandleLLVMOptions.cmake") |
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else() |
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message(FATAL_ERROR "Not found: ${LLVM_CMAKE_PATH}") |
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endif() |
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set(PACKAGE_NAME libunwind) |
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set(PACKAGE_VERSION 5.0.0svn) |
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set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}") |
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set(PACKAGE_BUGREPORT "llvm-bugs@lists.llvm.org") |
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if (EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) |
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set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) |
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else() |
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# Seek installed Lit. |
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find_program(LLVM_LIT "lit.py" ${LLVM_MAIN_SRC_DIR}/utils/lit |
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DOC "Path to lit.py") |
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endif() |
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if (LLVM_LIT) |
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# Define the default arguments to use with 'lit', and an option for the user |
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# to override. |
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set(LIT_ARGS_DEFAULT "-sv") |
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if (MSVC OR XCODE) |
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set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") |
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endif() |
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set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") |
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# On Win32 hosts, provide an option to specify the path to the GnuWin32 tools. |
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if (WIN32 AND NOT CYGWIN) |
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set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools") |
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endif() |
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else() |
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set(LLVM_INCLUDE_TESTS OFF) |
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endif() |
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set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}) |
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}) |
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else() |
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set(LLVM_MAIN_SRC_DIR "${CMAKE_SOURCE_DIR}" CACHE PATH "Path to LLVM source tree") |
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set(LLVM_LIT "${CMAKE_SOURCE_DIR}/utils/lit/lit.py") |
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endif() |
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#=============================================================================== |
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# Setup CMake Options |
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#=============================================================================== |
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include(HandleCompilerRT) |
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# Define options. |
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option(LIBUNWIND_BUILD_32_BITS "Build 32 bit libunwind" ${LLVM_BUILD_32_BITS}) |
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option(LIBUNWIND_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON) |
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option(LIBUNWIND_ENABLE_PEDANTIC "Compile with pedantic enabled." ON) |
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option(LIBUNWIND_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF) |
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option(LIBUNWIND_ENABLE_SHARED "Build libunwind as a shared library." ON) |
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option(LIBUNWIND_ENABLE_STATIC "Build libunwind as a static library." ON) |
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option(LIBUNWIND_ENABLE_CROSS_UNWINDING "Enable cross-platform unwinding support." OFF) |
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option(LIBUNWIND_ENABLE_ARM_WMMX "Enable unwinding support for ARM WMMX registers." OFF) |
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option(LIBUNWIND_ENABLE_THREADS "Build libunwind with threading support." ON) |
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option(LIBUNWIND_USE_COMPILER_RT "Use compiler-rt instead of libgcc" OFF) |
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option(LIBUNWIND_INCLUDE_DOCS "Build the libunwind documentation." ${LLVM_INCLUDE_DOCS}) |
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set(LIBUNWIND_TARGET_TRIPLE "" CACHE STRING "Target triple for cross compiling.") |
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set(LIBUNWIND_GCC_TOOLCHAIN "" CACHE PATH "GCC toolchain for cross compiling.") |
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set(LIBUNWIND_SYSROOT "" CACHE PATH "Sysroot for cross compiling.") |
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if (NOT LIBUNWIND_ENABLE_SHARED AND NOT LIBUNWIND_ENABLE_STATIC) |
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message(FATAL_ERROR "libunwind must be built as either a shared or static library.") |
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endif() |
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# Check that we can build with 32 bits if requested. |
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if (CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32) |
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if (LIBUNWIND_BUILD_32_BITS AND NOT LLVM_BUILD_32_BITS) # Don't duplicate the output from LLVM |
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message(STATUS "Building 32 bits executables and libraries.") |
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endif() |
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elseif(LIBUNWIND_BUILD_32_BITS) |
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message(FATAL_ERROR "LIBUNWIND_BUILD_32_BITS=ON is not supported on this platform.") |
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endif() |
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#=============================================================================== |
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# Configure System |
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#=============================================================================== |
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# Add path for custom modules |
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set(CMAKE_MODULE_PATH |
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake" |
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${CMAKE_MODULE_PATH}) |
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set(LIBUNWIND_COMPILER ${CMAKE_CXX_COMPILER}) |
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set(LIBUNWIND_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) |
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set(LIBUNWIND_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) |
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set(LIBUNWIND_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}) |
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set(LIBUNWIND_C_FLAGS "") |
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set(LIBUNWIND_CXX_FLAGS "") |
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set(LIBUNWIND_COMPILE_FLAGS "") |
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set(LIBUNWIND_LINK_FLAGS "") |
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# Get required flags. |
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macro(append_if list condition var) |
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if (${condition}) |
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list(APPEND ${list} ${var}) |
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endif() |
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endmacro() |
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macro(add_target_flags_if condition var) |
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if (${condition}) |
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${var}") |
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${var}") |
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list(APPEND LIBUNWIND_COMPILE_FLAGS ${var}) |
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list(APPEND LIBUNWIND_LINK_FLAGS ${var}) |
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endif() |
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endmacro() |
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add_target_flags_if(LIBUNWIND_BUILD_32_BITS "-m32") |
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add_target_flags_if(LIBUNWIND_TARGET_TRIPLE |
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"--target=${LIBUNWIND_TARGET_TRIPLE}") |
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add_target_flags_if(LIBUNWIND_GCC_TOOLCHAIN |
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"--gcc-toolchain=${LIBUNWIND_GCC_TOOLCHAIN}") |
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add_target_flags_if(LIBUNWIND_SYSROOT |
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"--sysroot=${LIBUNWIND_SYSROOT}") |
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# Configure compiler. |
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include(config-ix) |
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if (LIBUNWIND_USE_COMPILER_RT) |
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list(APPEND LIBUNWIND_LINK_FLAGS "-rtlib=compiler-rt") |
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endif() |
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#=============================================================================== |
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# Setup Compiler Flags |
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#=============================================================================== |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WERROR_FLAG -Werror=return-type) |
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# Get warning flags |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_W_FLAG -W) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WALL_FLAG -Wall) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WCHAR_SUBSCRIPTS_FLAG -Wchar-subscripts) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WCONVERSION_FLAG -Wconversion) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WMISMATCHED_TAGS_FLAG -Wmismatched-tags) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WMISSING_BRACES_FLAG -Wmissing-braces) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WNEWLINE_EOF_FLAG -Wnewline-eof) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WNO_UNUSED_FUNCTION_FLAG -Wno-unused-function) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSHADOW_FLAG -Wshadow) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSHORTEN_64_TO_32_FLAG -Wshorten-64-to-32) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSIGN_COMPARE_FLAG -Wsign-compare) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSIGN_CONVERSION_FLAG -Wsign-conversion) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSTRICT_ALIASING_FLAG -Wstrict-aliasing=2) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WSTRICT_OVERFLOW_FLAG -Wstrict-overflow=4) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WUNUSED_PARAMETER_FLAG -Wunused-parameter) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WUNUSED_VARIABLE_FLAG -Wunused-variable) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WWRITE_STRINGS_FLAG -Wwrite-strings) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WUNDEF_FLAG -Wundef) |
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if (LIBUNWIND_ENABLE_WERROR) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WERROR_FLAG -Werror) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WX_FLAG -WX) |
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else() |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_WNO_ERROR_FLAG -Wno-error) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_NO_WX_FLAG -WX-) |
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endif() |
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if (LIBUNWIND_ENABLE_PEDANTIC) |
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append_if(LIBUNWIND_COMPILE_FLAGS LIBUNWIND_HAS_PEDANTIC_FLAG -pedantic) |
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endif() |
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# Get feature flags. |
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# Exceptions |
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# Catches C++ exceptions only and tells the compiler to assume that extern C |
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# functions never throw a C++ exception. |
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append_if(LIBUNWIND_CXX_FLAGS LIBUNWIND_HAS_FSTRICT_ALIASING_FLAG -fstrict-aliasing) |
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append_if(LIBUNWIND_CXX_FLAGS LIBUNWIND_HAS_EHSC_FLAG -EHsc) |
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append_if(LIBUNWIND_C_FLAGS LIBUNWIND_HAS_FUNWIND_TABLES -funwind-tables) |
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# Assert |
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string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE) |
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if (LIBUNWIND_ENABLE_ASSERTIONS) |
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# MSVC doesn't like _DEBUG on release builds. See PR 4379. |
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if (NOT MSVC) |
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list(APPEND LIBUNWIND_COMPILE_FLAGS -D_DEBUG) |
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endif() |
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# On Release builds cmake automatically defines NDEBUG, so we |
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# explicitly undefine it: |
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if (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE") |
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list(APPEND LIBUNWIND_COMPILE_FLAGS -UNDEBUG) |
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endif() |
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else() |
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if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE") |
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list(APPEND LIBUNWIND_COMPILE_FLAGS -DNDEBUG) |
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endif() |
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endif() |
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# Cross-unwinding |
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if (NOT LIBUNWIND_ENABLE_CROSS_UNWINDING) |
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list(APPEND LIBUNWIND_COMPILE_FLAGS -D_LIBUNWIND_IS_NATIVE_ONLY) |
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endif() |
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# Threading-support |
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if (NOT LIBUNWIND_ENABLE_THREADS) |
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list(APPEND LIBUNWIND_COMPILE_FLAGS -D_LIBUNWIND_HAS_NO_THREADS) |
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endif() |
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# ARM WMMX register support |
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if (LIBUNWIND_ENABLE_ARM_WMMX) |
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# __ARM_WMMX is a compiler pre-define (as per the ACLE 2.0). Clang does not |
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# define this macro for any supported target at present. Therefore, here we |
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# provide the option to explicitly enable support for WMMX registers in the |
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# unwinder. |
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list(APPEND LIBUNWIND_COMPILE_FLAGS -D__ARM_WMMX) |
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endif() |
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# This is the _ONLY_ place where add_definitions is called. |
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if (MSVC) |
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add_definitions(-D_CRT_SECURE_NO_WARNINGS) |
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endif() |
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#=============================================================================== |
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# Setup Source Code |
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#=============================================================================== |
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include_directories(include) |
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find_path( |
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LIBUNWIND_LIBCXX_INCLUDES_INTERNAL |
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__libcpp_version |
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PATHS ${LLVM_MAIN_SRC_DIR}/projects/libcxx/include |
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${LLVM_MAIN_SRC_DIR}/runtimes/libcxx/include |
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NO_DEFAULT_PATH |
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) |
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if ((NOT LIBUNWIND_STANDALONE_BUILD OR HAVE_LIBCXX) AND |
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IS_DIRECTORY "${LIBUNWIND_LIBCXX_INCLUDES_INTERNAL}") |
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set(LIBUNWIND_CXX_INCLUDE_PATHS_DEFAULT "${LIBUNWIND_LIBCXX_INCLUDES_INTERNAL}") |
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endif() |
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set(LIBUNWIND_CXX_INCLUDE_PATHS "${LIBUNWIND_CXX_INCLUDE_PATHS_DEFAULT}" CACHE PATH |
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"Paths to C++ header directories separated by ';'.") |
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if (NOT LIBUNWIND_CXX_INCLUDE_PATHS STREQUAL "") |
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list(APPEND LIBUNWIND_CXX_FLAGS -nostdinc++) |
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include_directories("${LIBUNWIND_CXX_INCLUDE_PATHS}") |
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endif() |
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add_subdirectory(src) |
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if (LIBUNWIND_INCLUDE_DOCS) |
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add_subdirectory(docs) |
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endif()
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