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if(NOT CMAKE_CROSSCOMPILING)
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find_program(
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LD_MOLD_PATH
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ld
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PATHS
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${CMAKE_INSTALL_PREFIX}/libexec/mold
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ENV LD_MOLD_PATH
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NO_DEFAULT_PATH
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)
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if(NOT LD_MOLD_PATH STREQUAL "LD_MOLD_PATH-NOTFOUND")
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set(_have_ld_mold ON)
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else()
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set(_have_ld_mold OFF)
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endif()
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endif()
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option(USE_LD_MOLD "Use mold linker" ${_have_ld_mold})
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if(USE_LD_MOLD)
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message("-- Using Mold linker (pass -DUSE_LD_MOLD=OFF to disable)")
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if(CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12)
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if (_have_ld_mold)
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get_filename_component(_mold_dir ${LD_MOLD_PATH} DIRECTORY)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -B${_mold_dir}")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -B${_mold_dir}")
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else()
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message(WARNING "Cannot use mold linker: mold ld directory not found")
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endif()
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elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=mold")
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set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fuse-ld=mold")
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endif()
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endif()
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