forked from OSchip/llvm-project
285 lines
11 KiB
CMake
285 lines
11 KiB
CMake
#===============================================================================
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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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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 ${LLVM_CONFIG_PATH} --cmakedir
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RESULT_VARIABLE HAD_ERROR
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OUTPUT_VARIABLE CONFIG_OUTPUT)
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if(NOT HAD_ERROR)
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string(STRIP "${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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# 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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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 LINUNWIND_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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#===============================================================================
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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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add_subdirectory(src)
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