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75 lines
2.6 KiB
CMake
75 lines
2.6 KiB
CMake
# Building libclang-cpp.so fails if LLVM_ENABLE_PIC=Off
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if (NOT LLVM_ENABLE_PIC)
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return()
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endif()
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get_property(clang_libs GLOBAL PROPERTY CLANG_STATIC_LIBS)
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foreach (lib ${clang_libs})
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if(XCODE)
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# Xcode doesn't support object libraries, so we have to trick it into
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# linking the static libraries instead.
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list(APPEND _DEPS "-force_load" ${lib})
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else()
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list(APPEND _OBJECTS $<TARGET_OBJECTS:obj.${lib}>)
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endif()
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if (BUILD_SHARED_LIBS)
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# If we are building static libraries, then we don't need to add the static
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# libraries as a dependency, because we are already linking against the
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# individual object files.
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list(APPEND _DEPS $<TARGET_PROPERTY:${lib},INTERFACE_LINK_LIBRARIES>)
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endif()
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# clang libraries are redundant since we are linking all the individual
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# object files into libclang-cpp.so, so filter them out from _DEPS.
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# This avoids problems with LLVM global data when building with
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# BUILD_SHARED_LIBS=ON
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# FIXME: We could use list(FILTER) with cmake >= 3.6
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# FIXME: With cmake >= 3.15 we could use the generator expression
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# $<FILTER:list,INCLUDE|EXCLUDE,regex>
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get_target_property(interface ${lib} LINK_LIBRARIES)
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if (interface)
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foreach(lib ${interface})
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if (NOT ${lib} MATCHES "^clang")
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list(APPEND _DEPS ${lib})
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endif()
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endforeach()
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endif()
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endforeach ()
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if (CLANG_LINK_CLANG_DYLIB)
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set(INSTALL_WITH_TOOLCHAIN INSTALL_WITH_TOOLCHAIN)
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endif()
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if (HAIKU)
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list(APPEND _DEPS network)
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endif()
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add_clang_library(clang-cpp
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SHARED
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${INSTALL_WITH_TOOLCHAIN}
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clang-shlib.cpp
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${_OBJECTS}
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LINK_LIBS
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${_DEPS})
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configure_file(simple_version_script.map.in simple_version_script.map)
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if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
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target_link_options(clang-cpp PRIVATE LINKER:--version-script,${CMAKE_CURRENT_BINARY_DIR}/simple_version_script.map)
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endif()
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# Optimize function calls for default visibility definitions to avoid PLT and
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# reduce dynamic relocations.
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if (NOT APPLE AND LLVM_LINKER_SUPPORTS_B_SYMBOLIC_FUNCTIONS)
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target_link_options(clang-cpp PRIVATE LINKER:-Bsymbolic-functions)
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endif()
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if (MINGW OR CYGWIN)
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# The clang-cpp DLL is supposed to export all symbols (except for ones
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# that are explicitly hidden). Normally, this is what happens anyway, but
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# if there are symbols that are marked explicitly as dllexport, we'd only
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# export them and nothing else. Therefore, add --export-all-symbols to
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# make sure we export all symbols despite potential dllexports.
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target_link_options(clang-cpp PRIVATE LINKER:--export-all-symbols)
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endif()
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