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bebaf9d861
* Fix includes * Faster compile * WTFix * Limit compile and linking jobs according to available memory * Add comment * fix * Remove ALL from copy-headers target * Freebsd fix * Better * cmake: split use libcxx
50 lines
2.1 KiB
CMake
50 lines
2.1 KiB
CMake
# Uses MAKE_STATIC_LIBRARIES
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set(THREADS_PREFER_PTHREAD_FLAG ON)
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find_package (Threads)
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include (cmake/test_compiler.cmake)
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include (cmake/arch.cmake)
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if (OS_LINUX AND COMPILER_CLANG)
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
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option (USE_LIBCXX "Use libc++ and libc++abi instead of libstdc++ (only make sense on Linux with Clang)" ${HAVE_LIBCXX})
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set (LIBCXX_PATH "" CACHE STRING "Use custom path for libc++. It should be used for MSan.")
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if (USE_LIBCXX)
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++") # Ok for clang6, for older can cause 'not used option' warning
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set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -D_LIBCPP_DEBUG=0") # More checks in debug build.
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if (MAKE_STATIC_LIBRARIES)
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execute_process (COMMAND ${CMAKE_CXX_COMPILER} --print-file-name=libclang_rt.builtins-${CMAKE_SYSTEM_PROCESSOR}.a OUTPUT_VARIABLE BUILTINS_LIB_PATH OUTPUT_STRIP_TRAILING_WHITESPACE)
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link_libraries (-nodefaultlibs -Wl,-Bstatic -stdlib=libc++ c++ c++abi gcc_eh ${BUILTINS_LIB_PATH} rt -Wl,-Bdynamic dl pthread m c)
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else ()
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link_libraries (-stdlib=libc++ c++ c++abi)
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endif ()
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if (LIBCXX_PATH)
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# include_directories (SYSTEM BEFORE "${LIBCXX_PATH}/include" "${LIBCXX_PATH}/include/c++/v1")
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link_directories ("${LIBCXX_PATH}/lib")
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endif ()
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endif ()
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endif ()
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if (USE_LIBCXX)
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set (STATIC_STDLIB_FLAGS "")
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else ()
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set (STATIC_STDLIB_FLAGS "-static-libgcc -static-libstdc++")
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endif ()
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if (MAKE_STATIC_LIBRARIES AND NOT APPLE AND NOT (COMPILER_CLANG AND OS_FREEBSD))
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${STATIC_STDLIB_FLAGS}")
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# Along with executables, we also build example of shared library for "library dictionary source"; and it also should be self-contained.
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set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${STATIC_STDLIB_FLAGS}")
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endif ()
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if (USE_STATIC_LIBRARIES AND HAVE_NO_PIE)
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAG_NO_PIE}")
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLAG_NO_PIE}")
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endif ()
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