ClickHouse/cmake/find_cxx.cmake
2019-08-29 13:44:22 +03:00

50 lines
2.1 KiB
CMake

if (OS_LINUX AND COMPILER_CLANG)
option (USE_LIBCXX "Use libc++ and libc++abi instead of libstdc++" ON)
option (USE_INTERNAL_LIBCXX_LIBRARY "Set to FALSE to use system libcxx and libcxxabi libraries instead of bundled" ${NOT_UNBUNDLED})
endif()
if (USE_LIBCXX)
set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -D_LIBCPP_DEBUG=0") # More checks in debug build.
endif ()
# FIXME: make better check for submodule presence
if (USE_INTERNAL_LIBCXX_LIBRARY AND NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/libcxx/include/vector")
message (WARNING "submodule contrib/libcxx is missing. to fix try run: \n git submodule update --init --recursive")
set (USE_INTERNAL_LIBCXX_LIBRARY 0)
endif ()
# FIXME: make better check for submodule presence
if (USE_INTERNAL_LIBCXX_LIBRARY AND NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/libcxxabi/src")
message (WARNING "submodule contrib/libcxxabi is missing. to fix try run: \n git submodule update --init --recursive")
set (USE_INTERNAL_LIBCXX_LIBRARY 0)
endif ()
if (USE_LIBCXX)
if (NOT USE_INTERNAL_LIBCXX_LIBRARY)
find_library (LIBCXX_LIBRARY c++)
find_library (LIBCXXFS_LIBRARY c++fs)
find_library (LIBCXXABI_LIBRARY c++abi)
target_link_libraries(global-libs INTERFACE ${EXCEPTION_HANDLING_LIBRARY})
else ()
set (LIBCXX_LIBRARY cxx)
set (LIBCXXABI_LIBRARY cxxabi)
add_subdirectory(contrib/libcxxabi-cmake)
add_subdirectory(contrib/libcxx-cmake)
# Exception handling library is embedded into libcxxabi.
endif ()
target_link_libraries(global-libs INTERFACE ${LIBCXX_LIBRARY} ${LIBCXXABI_LIBRARY} ${LIBCXXFS_LIBRARY})
set (HAVE_LIBCXX 1)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
message (STATUS "Using libcxx: ${LIBCXX_LIBRARY}")
message (STATUS "Using libcxxfs: ${LIBCXXFS_LIBRARY}")
message (STATUS "Using libcxxabi: ${LIBCXXABI_LIBRARY}")
else ()
target_link_libraries(global-libs INTERFACE -l:libstdc++.a -l:libstdc++fs.a) # Always link these libraries as static
target_link_libraries(global-libs INTERFACE ${EXCEPTION_HANDLING_LIBRARY})
endif ()