| #=============================================================================== |
| # Setup Project |
| #=============================================================================== |
| |
| cmake_minimum_required(VERSION 2.8.8) |
| |
| if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) |
| project(libcxxabi) |
| |
| # Rely on llvm-config. |
| set(CONFIG_OUTPUT) |
| find_program(LLVM_CONFIG "llvm-config") |
| 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) |
| message(STATUS "Found LLVM_CONFIG as ${LLVM_CONFIG}") |
| set(CONFIG_COMMAND ${LLVM_CONFIG} |
| "--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 ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree") |
| set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR}/share/llvm/cmake") |
| set(LLVM_LIT_PATH "${LLVM_PATH}/utils/lit/lit.py") |
| else() |
| message(FATAL_ERROR "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 ${LLVM_CMAKE_PATH}) |
| list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}") |
| include("${LLVM_CMAKE_PATH}/AddLLVM.cmake") |
| include("${LLVM_CMAKE_PATH}/HandleLLVMOptions.cmake") |
| else() |
| message(FATAL_ERROR "Not found: ${LLVM_CMAKE_PATH}") |
| endif() |
| |
| set(PACKAGE_NAME libcxxabi) |
| set(PACKAGE_VERSION 3.6.0) |
| set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}") |
| set(PACKAGE_BUGREPORT "llvmbugs@cs.uiuc.edu") |
| |
| 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(LIBCXXABI_LIBDIR_SUFFIX "" CACHE STRING |
| "Define suffix of library directory name (32/64)") |
| |
| set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LIBCXXABI_LIBDIR_SUFFIX}) |
| set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LIBCXXABI_LIBDIR_SUFFIX}) |
| |
| set(LIBCXXABI_BUILT_STANDALONE 1) |
| else() |
| set(LLVM_LIT "${CMAKE_SOURCE_DIR}/utils/lit/lit.py") |
| set(LIBCXXABI_LIBDIR_SUFFIX ${LLVM_LIBDIR_SUFFIX}) |
| endif() |
| |
| #=============================================================================== |
| # Setup CMake Options |
| #=============================================================================== |
| |
| # Define options. |
| option(LIBCXXABI_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON) |
| option(LIBCXXABI_ENABLE_PEDANTIC "Compile with pedantic enabled." ON) |
| option(LIBCXXABI_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF) |
| option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF) |
| option(LIBCXXABI_ENABLE_THREADS "Build with threads enabled" ON) |
| |
| # Default to building a shared library so that the default options still test |
| # the libc++abi that is being built. There are two problems with testing a |
| # static libc++abi. In the case of a standalone build, the tests will link the |
| # system's libc++, which might not have been built against our libc++abi. In the |
| # case of an in tree build, libc++ will prefer a dynamic libc++abi from the |
| # system over a static libc++abi from the output directory. |
| option(LIBCXXABI_ENABLE_SHARED "Build libc++abi as a shared library." ON) |
| |
| find_path( |
| LIBCXXABI_LIBCXX_INCLUDES |
| vector |
| PATHS ${LIBCXXABI_LIBCXX_INCLUDES} |
| ${CMAKE_BINARY_DIR}/${LIBCXXABI_LIBCXX_INCLUDES} |
| ${LLVM_MAIN_SRC_DIR}/projects/libcxx/include |
| ${LLVM_INCLUDE_DIR}/c++/v1 |
| ) |
| |
| set(LIBCXXABI_LIBCXX_INCLUDES "${LIBCXXABI_LIBCXX_INCLUDES}" CACHE STRING |
| "Specify path to libc++ includes." FORCE) |
| |
| #=============================================================================== |
| # Configure System |
| #=============================================================================== |
| |
| # Add path for custom modules |
| set(CMAKE_MODULE_PATH |
| "${CMAKE_CURRENT_SOURCE_DIR}/cmake" |
| "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" |
| ${CMAKE_MODULE_PATH} |
| ) |
| |
| # Configure compiler. |
| include(config-ix) |
| |
| set(LIBCXXABI_COMPILER ${CMAKE_CXX_COMPILER}) |
| set(LIBCXXABI_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) |
| set(LIBCXXABI_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) |
| set(LIBCXXABI_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXXABI_LIBDIR_SUFFIX}) |
| |
| #=============================================================================== |
| # Setup Compiler Flags |
| #=============================================================================== |
| |
| # Get required flags. |
| macro(append_if list condition var) |
| if (${condition}) |
| list(APPEND ${list} ${var}) |
| endif() |
| endmacro() |
| |
| set(LIBCXXABI_C_FLAGS "") |
| set(LIBCXXABI_CXX_FLAGS "") |
| set(LIBCXXABI_COMPILE_FLAGS "") |
| set(LIBCXXABI_LINK_FLAGS "") |
| |
| |
| if (LIBCXXABI_HAS_NOSTDINCXX_FLAG) |
| list(APPEND LIBCXXABI_COMPILE_FLAGS -nostdinc++) |
| # Remove -stdlib flags to prevent them from causing an unused flag warning. |
| string(REPLACE "-stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") |
| string(REPLACE "-stdlib=libstdc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") |
| endif() |
| |
| |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WERROR_FLAG -Werror=return-type) |
| |
| # Get warning flags |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_W_FLAG -W) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WALL_FLAG -Wall) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WCHAR_SUBSCRIPTS_FLAG -Wchar-subscripts) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WCONVERSION_FLAG -Wconversion) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WMISMATCHED_TAGS_FLAG -Wmismatched-tags) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WMISSING_BRACES_FLAG -Wmissing-braces) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WNEWLINE_EOF_FLAG -Wnewline-eof) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WNO_UNUSED_FUNCTION_FLAG -Wno-unused-function) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSHADOW_FLAG -Wshadow) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSHORTEN_64_TO_32_FLAG -Wshorten-64-to-32) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSIGN_COMPARE_FLAG -Wsign-compare) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSIGN_CONVERSION_FLAG -Wsign-conversion) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSTRICT_ALIASING_FLAG -Wstrict-aliasing=2) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSTRICT_OVERFLOW_FLAG -Wstrict-overflow=4) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WUNUSED_PARAMETER_FLAG -Wunused-parameter) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WUNUSED_VARIABLE_FLAG -Wunused-variable) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WWRITE_STRINGS_FLAG -Wwrite-strings) |
| |
| if (LIBCXXABI_ENABLE_WERROR) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WERROR_FLAG -Werror) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WX_FLAG -WX) |
| else() |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WNO_ERROR_FLAG -Wno-error) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_NO_WX_FLAG -WX-) |
| endif() |
| if (LIBCXXABI_ENABLE_PEDANTIC) |
| append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_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. |
| append_if(LIBCXXABI_CXX_FLAGS LIBCXXABI_HAS_FSTRICT_ALIASING_FLAG -fstrict-aliasing) |
| append_if(LIBCXXABI_CXX_FLAGS LIBCXXABI_HAS_EHSC_FLAG -EHsc) |
| |
| append_if(LIBCXXABI_C_FLAGS LIBCXXABI_HAS_FUNWIND_TABLES -funwind-tables) |
| |
| # Assert |
| string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE) |
| if (LIBCXXABI_ENABLE_ASSERTIONS) |
| # MSVC doesn't like _DEBUG on release builds. See PR 4379. |
| if (NOT MSVC) |
| list(APPEND LIBCXXABI_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 LIBCXXABI_COMPILE_FLAGS -UNDEBUG) |
| endif() |
| else() |
| if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE") |
| list(APPEND LIBCXXABI_COMPILE_FLAGS -DNDEBUG) |
| endif() |
| endif() |
| # Static library |
| if (NOT LIBCXXABI_ENABLE_SHARED) |
| list(APPEND LIBCXXABI_COMPILE_FLAGS -D_LIBCPP_BUILD_STATIC) |
| endif() |
| |
| if (NOT LIBCXXABI_ENABLE_THREADS) |
| add_definitions(-DLIBCXXABI_HAS_NO_THREADS=1) |
| endif() |
| |
| # This is the _ONLY_ place where add_definitions is called. |
| if (MSVC) |
| add_definitions(-D_CRT_SECURE_NO_WARNINGS) |
| endif() |
| |
| # Define LIBCXXABI_USE_LLVM_UNWINDER for conditional compilation. |
| if (LIBCXXABI_USE_LLVM_UNWINDER) |
| add_definitions(-DLIBCXXABI_USE_LLVM_UNWINDER=1) |
| endif() |
| |
| string(REPLACE ";" " " LIBCXXABI_CXX_FLAGS "${LIBCXXABI_CXX_FLAGS}") |
| set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXXABI_CXX_FLAGS}") |
| set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${LIBCXXABI_C_FLAGS}") |
| |
| #=============================================================================== |
| # Setup Source Code |
| #=============================================================================== |
| |
| include_directories(include) |
| |
| # Add source code. This also contains all of the logic for deciding linker flags |
| # soname, etc... |
| add_subdirectory(src) |
| |
| if (LIBCXXABI_USE_LLVM_UNWINDER) |
| add_subdirectory(src/Unwind) |
| endif() |
| |
| if(NOT LIBCXXABI_ENABLE_SHARED) |
| # TODO: Fix the libc++ cmake files so that libc++abi can be statically linked. |
| # As it is now, libc++ will prefer linking against a dynamic libc++abi in the |
| # system library paths over a static libc++abi in the out directory. This |
| # would test the system library rather than the one we just built, which isn't |
| # very helpful. |
| message(WARNING "The libc++abi tests are currently only valid when " |
| "LIBCXXABI_ENABLE_SHARED is on, no check target will be " |
| "available!") |
| else() |
| add_subdirectory(test) |
| endif() |