| |
| #=============================================================================== |
| # Add an ABI library if appropriate |
| #=============================================================================== |
| |
| # |
| # _setup_abi: Set up the build to use an ABI library |
| # |
| # Parameters: |
| # abidefines: A list of defines needed to compile libc++ with the ABI library |
| # abishared : The shared ABI library to link against. |
| # abistatic : The static ABI library to link against. |
| # abifiles : A list of files (which may be relative paths) to copy into the |
| # libc++ build tree for the build. These files will be copied |
| # twice: once into include/, so the libc++ build itself can find |
| # them, and once into include/c++/v1, so that a clang built into |
| # the same build area will find them. These files will also be |
| # installed alongside the libc++ headers. |
| # abidirs : A list of relative paths to create under an include directory |
| # in the libc++ build directory. |
| # |
| |
| macro(setup_abi_lib abidefines abishared abistatic abifiles abidirs) |
| list(APPEND LIBCXX_COMPILE_FLAGS ${abidefines}) |
| set(LIBCXX_CXX_ABI_INCLUDE_PATHS "${LIBCXX_CXX_ABI_INCLUDE_PATHS}" |
| CACHE PATH |
| "Paths to C++ ABI header directories separated by ';'." FORCE |
| ) |
| set(LIBCXX_CXX_ABI_LIBRARY_PATH "${LIBCXX_CXX_ABI_LIBRARY_PATH}" |
| CACHE PATH |
| "Paths to C++ ABI library directory" |
| ) |
| set(LIBCXX_CXX_SHARED_ABI_LIBRARY ${abishared}) |
| set(LIBCXX_CXX_STATIC_ABI_LIBRARY ${abistatic}) |
| set(LIBCXX_ABILIB_FILES ${abifiles}) |
| |
| foreach(fpath ${LIBCXX_ABILIB_FILES}) |
| set(found FALSE) |
| foreach(incpath ${LIBCXX_CXX_ABI_INCLUDE_PATHS}) |
| message(STATUS "Looking for ${fpath} in ${incpath}") |
| if (EXISTS "${incpath}/${fpath}") |
| set(found TRUE) |
| message(STATUS "Looking for ${fpath} in ${incpath} - found") |
| get_filename_component(dstdir ${fpath} PATH) |
| get_filename_component(ifile ${fpath} NAME) |
| set(src ${incpath}/${fpath}) |
| |
| set(dst ${LIBCXX_BINARY_INCLUDE_DIR}/${dstdir}/${ifile}) |
| add_custom_command(OUTPUT ${dst} |
| DEPENDS ${src} |
| COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst} |
| COMMENT "Copying C++ ABI header ${fpath}...") |
| list(APPEND abilib_headers "${dst}") |
| |
| # TODO: libc++ shouldn't be responsible for copying the libc++abi |
| # headers into the right location. |
| set(dst "${LIBCXX_GENERATED_INCLUDE_DIR}/${dstdir}/${fpath}") |
| add_custom_command(OUTPUT ${dst} |
| DEPENDS ${src} |
| COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst} |
| COMMENT "Copying C++ ABI header ${fpath}...") |
| list(APPEND abilib_headers "${dst}") |
| |
| if (LIBCXX_INSTALL_HEADERS) |
| install(FILES "${LIBCXX_BINARY_INCLUDE_DIR}/${fpath}" |
| DESTINATION include/c++/v1/${dstdir} |
| COMPONENT cxx-headers |
| PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ |
| ) |
| endif() |
| else() |
| message(STATUS "Looking for ${fpath} in ${incpath} - not found") |
| endif() |
| endforeach() |
| if (NOT found) |
| message(WARNING "Failed to find ${fpath} in ${LIBCXX_CXX_ABI_INCLUDE_PATHS}") |
| endif() |
| endforeach() |
| |
| include_directories("${LIBCXX_BINARY_INCLUDE_DIR}") |
| add_custom_target(cxx_abi_headers ALL DEPENDS ${abilib_headers}) |
| set(LIBCXX_CXX_ABI_HEADER_TARGET "cxx_abi_headers") |
| endmacro() |
| |
| |
| # Configure based on the selected ABI library. |
| if ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libstdc++" OR |
| "${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libsupc++") |
| set(_LIBSUPCXX_INCLUDE_FILES |
| cxxabi.h bits/c++config.h bits/os_defines.h bits/cpu_defines.h |
| bits/cxxabi_tweaks.h bits/cxxabi_forced.h |
| ) |
| if ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libstdc++") |
| set(_LIBSUPCXX_DEFINES "-DLIBSTDCXX") |
| set(_LIBSUPCXX_LIBNAME stdc++) |
| else() |
| set(_LIBSUPCXX_DEFINES "") |
| set(_LIBSUPCXX_LIBNAME supc++) |
| endif() |
| setup_abi_lib( |
| "-D__GLIBCXX__ ${_LIBSUPCXX_DEFINES}" |
| "${_LIBSUPCXX_LIBNAME}" "${_LIBSUPCXX_LIBNAME}" "${_LIBSUPCXX_INCLUDE_FILES}" "bits" |
| ) |
| elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libcxxabi") |
| if(NOT LIBCXX_CXX_ABI_INCLUDE_PATHS) |
| set(LIBCXX_CXX_ABI_INCLUDE_PATHS "${LIBCXX_SOURCE_DIR}/../libcxxabi/include") |
| endif() |
| |
| if(LIBCXX_STANDALONE_BUILD AND NOT (LIBCXX_CXX_ABI_INTREE OR HAVE_LIBCXXABI)) |
| set(shared c++abi) |
| set(static c++abi) |
| else() |
| set(shared cxxabi_shared) |
| set(static cxxabi_static) |
| endif() |
| |
| setup_abi_lib( |
| "-DLIBCXX_BUILDING_LIBCXXABI" |
| "${shared}" "${static}" "cxxabi.h;__cxxabi_config.h" "") |
| elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libcxxrt") |
| if(NOT LIBCXX_CXX_ABI_INCLUDE_PATHS) |
| set(LIBCXX_CXX_ABI_INCLUDE_PATHS "/usr/include/c++/v1") |
| endif() |
| # libcxxrt does not provide aligned new and delete operators |
| set(LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS ON) |
| setup_abi_lib( |
| "-DLIBCXXRT" |
| "cxxrt" "cxxrt" "cxxabi.h;unwind.h;unwind-arm.h;unwind-itanium.h" "" |
| ) |
| elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "vcruntime") |
| # Nothing to do |
| elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "none") |
| list(APPEND LIBCXX_COMPILE_FLAGS "-D_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY") |
| elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "default") |
| # Nothing to do |
| else() |
| message(FATAL_ERROR |
| "Unsupported c++ abi: '${LIBCXX_CXX_ABI_LIBNAME}'. \ |
| Currently libstdc++, libsupc++, libcxxabi, libcxxrt, default and none are |
| supported for c++ abi." |
| ) |
| endif () |