| # only turn on static-libstdc++ if also linking statically against clang |
| string(REGEX MATCH ".*[.]a$" LIBCLANG_ISSTATIC "${libclangBasic}") |
| # if gcc 4.9 or higher is used, static libstdc++ is a good option |
| if (CMAKE_COMPILER_IS_GNUCC AND LIBCLANG_ISSTATIC) |
| execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION) |
| if (GCC_VERSION VERSION_GREATER 4.9 OR GCC_VERSION VERSION_EQUAL 4.9) |
| execute_process(COMMAND ${CMAKE_C_COMPILER} -print-libgcc-file-name OUTPUT_VARIABLE GCC_LIB) |
| get_filename_component(GCC_DIR "${GCC_LIB}" DIRECTORY) |
| find_library(GCC_LIBSTDCPP libstdc++.a PATHS "${GCC_DIR}" NO_DEFAULT_PATH) |
| if (GCC_LIBSTDCPP) |
| message(STATUS "Using static-libstdc++") |
| set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -static-libstdc++") |
| endif() |
| endif() |
| endif() |
