forked from OSchip/llvm-project
265 lines
10 KiB
CMake
265 lines
10 KiB
CMake
#===============================================================================
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# Setup Project
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#===============================================================================
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cmake_minimum_required(VERSION 2.8.8)
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if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
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project(libcxxabi)
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# Rely on llvm-config.
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set(CONFIG_OUTPUT)
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find_program(LLVM_CONFIG "llvm-config")
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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)
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message(STATUS "Found LLVM_CONFIG as ${LLVM_CONFIG}")
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set(CONFIG_COMMAND ${LLVM_CONFIG}
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"--includedir"
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"--prefix"
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"--src-root")
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execute_process(
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COMMAND ${CONFIG_COMMAND}
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RESULT_VARIABLE HAD_ERROR
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OUTPUT_VARIABLE CONFIG_OUTPUT
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)
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if(NOT HAD_ERROR)
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string(REGEX REPLACE
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"[ \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 ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
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set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR}/share/llvm/cmake")
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set(LLVM_LIT_PATH "${LLVM_PATH}/utils/lit/lit.py")
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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: ${LLVM_CMAKE_PATH}")
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endif()
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set(PACKAGE_NAME libcxxabi)
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set(PACKAGE_VERSION 3.6.0svn)
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set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
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set(PACKAGE_BUGREPORT "llvmbugs@cs.uiuc.edu")
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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)
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
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set(LIBCXXABI_BUILT_STANDALONE 1)
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else()
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set(LLVM_LIT "${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(LIBCXXABI_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON)
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option(LIBCXXABI_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
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option(LIBCXXABI_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
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option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF)
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# Default to building a shared library so that the default options still test
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# the libc++abi that is being built. There are two problems with testing a
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# static libc++abi. In the case of a standalone build, the tests will link the
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# system's libc++, which might not have been built against our libc++abi. In the
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# case of an in tree build, libc++ will prefer a dynamic libc++abi from the
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# system over a static libc++abi from the output directory.
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option(LIBCXXABI_ENABLE_SHARED "Build libc++abi as a shared library." ON)
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find_path(
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LIBCXXABI_LIBCXX_INCLUDES
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vector
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PATHS ${LIBCXXABI_LIBCXX_INCLUDES}
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${CMAKE_BINARY_DIR}/${LIBCXXABI_LIBCXX_INCLUDES}
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${LLVM_MAIN_SRC_DIR}/projects/libcxx/include
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${LLVM_INCLUDE_DIR}/c++/v1
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)
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set(LIBCXXABI_LIBCXX_INCLUDES "${LIBCXXABI_LIBCXX_INCLUDES}" CACHE STRING
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"Specify path to libc++ includes." FORCE)
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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_CURRENT_SOURCE_DIR}/cmake/Modules"
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${CMAKE_MODULE_PATH}
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)
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# Configure compiler.
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include(config-ix)
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#===============================================================================
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# Setup Compiler Flags
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#===============================================================================
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# Get required flags.
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macro(append_if list condition var)
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if (${condition})
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list(APPEND ${list} ${var})
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endif()
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endmacro()
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set(LIBCXXABI_CXX_FLAGS "")
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set(LIBCXXABI_COMPILE_FLAGS "")
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set(LIBCXXABI_LINK_FLAGS "")
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if (LIBCXXABI_HAS_NOSTDINCXX_FLAG)
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list(APPEND LIBCXXABI_COMPILE_FLAGS -nostdinc++)
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# Remove -stdlib flags to prevent them from causing an unused flag warning.
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string(REPLACE "-stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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string(REPLACE "-stdlib=libstdc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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endif()
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WERROR_FLAG -Werror=return-type)
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# Get warning flags
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_W_FLAG -W)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WALL_FLAG -Wall)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WCHAR_SUBSCRIPTS_FLAG -Wchar-subscripts)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WCONVERSION_FLAG -Wconversion)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WMISMATCHED_TAGS_FLAG -Wmismatched-tags)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WMISSING_BRACES_FLAG -Wmissing-braces)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WNEWLINE_EOF_FLAG -Wnewline-eof)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WNO_UNUSED_FUNCTION_FLAG -Wno-unused-function)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSHADOW_FLAG -Wshadow)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSHORTEN_64_TO_32_FLAG -Wshorten-64-to-32)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSIGN_COMPARE_FLAG -Wsign-compare)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSIGN_CONVERSION_FLAG -Wsign-conversion)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSTRICT_ALIASING_FLAG -Wstrict-aliasing=2)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSTRICT_OVERFLOW_FLAG -Wstrict-overflow=4)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WUNUSED_PARAMETER_FLAG -Wunused-parameter)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WUNUSED_VARIABLE_FLAG -Wunused-variable)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WWRITE_STRINGS_FLAG -Wwrite-strings)
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if (LIBCXXABI_ENABLE_WERROR)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WERROR_FLAG -Werror)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WX_FLAG -WX)
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else()
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WNO_ERROR_FLAG -Wno-error)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_NO_WX_FLAG -WX-)
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endif()
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if (LIBCXXABI_ENABLE_PEDANTIC)
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append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_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(LIBCXXABI_CXX_FLAGS LIBCXXABI_HAS_FSTRICT_ALIASING_FLAG -fstrict-aliasing)
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append_if(LIBCXXABI_CXX_FLAGS LIBCXXABI_HAS_EHSC_FLAG -EHsc)
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# Assert
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string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
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if (LIBCXXABI_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 LIBCXXABI_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 LIBCXXABI_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 LIBCXXABI_COMPILE_FLAGS -DNDEBUG)
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endif()
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endif()
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# Static library
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if (NOT LIBCXXABI_ENABLE_SHARED)
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list(APPEND LIBCXXABI_COMPILE_FLAGS -D_LIBCPP_BUILD_STATIC)
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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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add_definitions(-D_LIBUNWIND_SUPPORT_DWARF_UNWIND=0)
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string(REPLACE ";" " " LIBCXXABI_CXX_FLAGS "${LIBCXXABI_CXX_FLAGS}")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXXABI_CXX_FLAGS}")
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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 source code. This also contains all of the logic for deciding linker flags
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# soname, etc...
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add_subdirectory(src)
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if (LIBCXXABI_USE_LLVM_UNWINDER)
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add_subdirectory(src/Unwind)
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endif()
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if(NOT LIBCXXABI_ENABLE_SHARED)
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# TODO: Fix the libc++ cmake files so that libc++abi can be statically linked.
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# As it is now, libc++ will prefer linking against a dynamic libc++abi in the
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# system library paths over a static libc++abi in the out directory. This
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# would test the system library rather than the one we just built, which isn't
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# very helpful.
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message(WARNING "The libc++abi tests are currently only valid when "
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"LIBCXXABI_ENABLE_SHARED is on, no check target will be "
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"available!")
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else()
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add_subdirectory(test)
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endif()
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