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https://github.com/Kitware/CMake.git
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96a953b1ed
Offer the capability, through variable `CMAKE_LINKER_TYPE`, as well as the target property `LINKER_TYPE` to specify which linker must be used. The implementation of this capability is specified by variables specific to the language and linker type: `CMAKE_<LANG>_USING_LINKER_<TYPE>`. Some definitions are provided as part of `CMake`. For example, to select the `LLVM` linker rather than the standard one, the type `LLD` should be specified through the variable `CMAKE_LINKER_TYPE`. And, on `Apple`, `Linux` and some environments on `Windows`, the variable `CMAKE_<LANG>_USING_LINKER_LLD` has value `-fuse-ld=lld`. And for `Windows` environments based on `MSVC`, where the linker is used directly, the tool `lld-link.exe` will be used rather than `link.exe`. Fixes: #19174, #24254, #24990
45 lines
1.2 KiB
CMake
45 lines
1.2 KiB
CMake
include(RunCMake)
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if (RunCMake_GENERATOR MATCHES "Visual Studio 9 2008")
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run_cmake(UnsupportedLinkerType)
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return()
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endif()
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run_cmake(InvalidLinkerType)
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# look-up for LLVM linker
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if (WIN32)
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set (LINKER_NAMES lld-link)
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else()
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set(LINKER_NAMES ld.lld ld64.lld)
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endif()
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find_program(LLD_LINKER NAMES ${LINKER_NAMES})
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macro(run_cmake_and_build test)
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run_cmake_with_options(${test} -DCMake_TEST_CUDA=${CMake_TEST_CUDA})
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set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${test}-build)
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set(RunCMake_TEST_NO_CLEAN 1)
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if(CMake_TEST_CUDA)
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string(APPEND "|${CMAKE_CUDA_USING_LINKER_LLD}")
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endif()
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run_cmake_command(${test}-build ${CMAKE_COMMAND} --build . --config Release --verbose ${ARGN})
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unset(RunCMake_TEST_BINARY_DIR)
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unset(RunCMake_TEST_NO_CLEAN)
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endmacro()
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if(LLD_LINKER)
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block(SCOPE_FOR VARIABLES)
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set(CMAKE_VERBOSE_MAKEFILE TRUE)
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set(CMAKE_C_USE_RESPONSE_FILE_FOR_LIBRARIES FALSE)
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set(CMAKE_CUDA_USE_RESPONSE_FILE_FOR_LIBRARIES FALSE)
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run_cmake_and_build(ValidLinkerType)
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run_cmake_and_build(CustomLinkerType)
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endblock()
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endif()
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if(CMAKE_C_COMPILER_ID STREQUAL "AppleClang" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL "15.0")
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run_cmake_and_build(AppleClassic)
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endif()
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