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‎flang-rt/cmake/modules/GetToolchainDirs.cmake

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#===-- cmake/modules/GetToolchainDirs.cmake --------------------------------===#
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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#===------------------------------------------------------------------------===#
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include(GNUInstallDirs)
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# Determine the subdirectory relative to Clang's resource dir/sysroot where to
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# install target-specific libraries, to be found by Clang/Flang driver. This was
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# adapted from Compiler-RT's mechanism to find the path for
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# libclang_rt.builtins.a.
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#
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# Compiler-RT has two mechanisms for the path (simplified):
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#
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# * LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=1: lib/${oslibname}/libclang_rt.builtins-${arch}.a
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# * LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=0: lib/${triple}/libclang_rt.builtins.a
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#
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# LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON is the newer scheme, but the old one is
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# currently still used for some platforms such as Windows. Clang looks for which
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# of the files exist before passing the path to the linker. Hence, the
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# directories have to match what Clang is looking for, which is done in
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# ToolChain::getArchSpecificLibPaths(..), ToolChain::getRuntimePath(),
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# ToolChain::getCompilerRTPath(), and ToolChain::getCompilerRT(..), not entirely
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# consistent between these functions, Compiler-RT's CMake code, and overrides
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# in different toolchains.
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#
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# For Fortran, Flang always assumes the library name libflang_rt.a without
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# architecture suffix. Hence, we always use the second scheme even as if
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# LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON, even if it actually set to OFF. It as
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# added unconditionally to the library search path by
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# ToolChain::getArchSpecificLibPaths(...).
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function (get_toolchain_library_subdir outvar)
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if (NOT APPLE)
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set(outval "${CMAKE_INSTALL_LIBDIR}")
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else ()
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# Required to be "darwin" for MachO toolchain.
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get_toolchain_os_dirname(os_dirname)
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set(outval "${CMAKE_INSTALL_LIBDIR}/${os_dirname}")
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endif ()
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get_toolchain_arch_dirname(arch_dirname)
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set(outval "${CMAKE_INSTALL_LIBDIR}/${arch_dirname}")
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set(${outvar} "${outval}" PARENT_SCOPE)
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endfunction ()
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# Corresponds to Clang's ToolChain::getOSLibName(). Adapted from Compiler-RT.
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function (get_toolchain_os_dirname outvar)
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if (ANDROID)
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# The CMAKE_SYSTEM_NAME for Android is "Android", but the OS is Linux and the
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# driver will search for libraries in the "linux" directory.
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set(outval "linux")
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else ()
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string(TOLOWER "${CMAKE_SYSTEM_NAME}" outval)
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endif ()
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set(${outvar} "${outval}" PARENT_SCOPE)
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endfunction ()
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# Corresponds to Clang's ToolChain::getRuntimePath(). Adapted from Compiler-RT.
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function (get_toolchain_arch_dirname outvar)
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string(REPLACE "-" ";" triple_list ${LLVM_TARGET_TRIPLE})
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list(GET triple_list 0 arch)
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if("${arch}" MATCHES "^i.86$")
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# Android uses i686, but that's remapped at a later stage.
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set(arch "i386")
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endif()
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string(FIND ${LLVM_TARGET_TRIPLE} "-" dash_index)
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string(SUBSTRING ${LLVM_TARGET_TRIPLE} ${dash_index} -1 triple_suffix)
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string(SUBSTRING ${LLVM_TARGET_TRIPLE} 0 ${dash_index} triple_cpu)
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set(arch "${triple_cpu}")
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if("${arch}" MATCHES "^i.86$")
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# Android uses i686, but that's remapped at a later stage.
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set(arch "i386")
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endif()
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if(ANDROID AND ${arch} STREQUAL "i386")
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set(target "i686${triple_suffix}")
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elseif(${arch} STREQUAL "amd64")
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set(target "x86_64${triple_suffix}")
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elseif(${arch} STREQUAL "sparc64")
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set(target "sparcv9${triple_suffix}")
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elseif("${arch}" MATCHES "mips64|mips64el")
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string(REGEX REPLACE "-gnu.*" "-gnuabi64" triple_suffix_gnu "${triple_suffix}")
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string(REGEX REPLACE "mipsisa32" "mipsisa64" triple_cpu_mips "${triple_cpu}")
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string(REGEX REPLACE "^mips$" "mips64" triple_cpu_mips "${triple_cpu_mips}")
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string(REGEX REPLACE "^mipsel$" "mips64el" triple_cpu_mips "${triple_cpu_mips}")
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set(target "${triple_cpu_mips}${triple_suffix_gnu}")
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elseif("${arch}" MATCHES "mips|mipsel")
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string(REGEX REPLACE "-gnuabi.*" "-gnu" triple_suffix_gnu "${triple_suffix}")
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string(REGEX REPLACE "mipsisa64" "mipsisa32" triple_cpu_mips "${triple_cpu}")
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string(REGEX REPLACE "mips64" "mips" triple_cpu_mips "${triple_cpu_mips}")
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set(target "${triple_cpu_mips}${triple_suffix_gnu}")
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elseif("${arch}" MATCHES "^arm")
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# FIXME: Handle arch other than arm, armhf, armv6m
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if (${arch} STREQUAL "armhf")
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# If we are building for hard float but our ABI is soft float.
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if ("${triple_suffix}" MATCHES ".*eabi$")
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# Change "eabi" -> "eabihf"
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set(triple_suffix "${triple_suffix}hf")
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endif()
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# ABI is already set in the triple, don't repeat it in the architecture.
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set(arch "arm")
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else ()
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# If we are building for soft float, but the triple's ABI is hard float.
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if ("${triple_suffix}" MATCHES ".*eabihf$")
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# Change "eabihf" -> "eabi"
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string(REGEX REPLACE "hf$" "" triple_suffix "${triple_suffix}")
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endif()
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endif()
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set(target "${arch}${triple_suffix}")
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elseif("${arch}" MATCHES "^amdgcn")
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set(target "amdgcn-amd-amdhsa")
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elseif("${arch}" MATCHES "^nvptx")
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set(target "nvptx64-nvidia-cuda")
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else()
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set(target "${arch}${triple_suffix}")
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endif()
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set(${outvar} "${target}" PARENT_SCOPE)
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endfunction()
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#===-- cmake/modules/GetToolchainDirs.cmake --------------------------------===#
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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#===------------------------------------------------------------------------===#
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include(GNUInstallDirs)
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# Determine the subdirectory relative to Clang's resource dir/sysroot where to
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# install target-specific libraries, to be found by Clang/Flang driver. This was
14+
# adapted from Compiler-RT's mechanism to find the path for
15+
# libclang_rt.builtins.a.
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#
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# Compiler-RT has two mechanisms for the path (simplified):
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#
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# * LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=1: lib/${oslibname}/libclang_rt.builtins-${arch}.a
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# * LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=0: lib/${triple}/libclang_rt.builtins.a
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#
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# LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON is the newer scheme, but the old one is
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# currently still used for some platforms such as Windows. Clang looks for which
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# of the files exist before passing the path to the linker. Hence, the
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# directories have to match what Clang is looking for, which is done in
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# ToolChain::getArchSpecificLibPaths(..), ToolChain::getRuntimePath(),
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# ToolChain::getCompilerRTPath(), and ToolChain::getCompilerRT(..), not entirely
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# consistent between these functions, Compiler-RT's CMake code, and overrides
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# in different toolchains.
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#
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# For Fortran, Flang always assumes the library name libflang_rt.a without
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# architecture suffix. Hence, we always use the second scheme even as if
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# LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON, even if it actually set to OFF. It as
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# added unconditionally to the library search path by
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# ToolChain::getArchSpecificLibPaths(...).
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function (get_toolchain_library_subdir outvar)
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if (NOT APPLE)
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set(outval "${CMAKE_INSTALL_LIBDIR}")
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else ()
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# Required to be "darwin" for MachO toolchain.
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get_toolchain_os_dirname(os_dirname)
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set(outval "${CMAKE_INSTALL_LIBDIR}/${os_dirname}")
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endif ()
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get_toolchain_arch_dirname(arch_dirname)
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set(outval "${CMAKE_INSTALL_LIBDIR}/${arch_dirname}")
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set(${outvar} "${outval}" PARENT_SCOPE)
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endfunction ()
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# Corresponds to Clang's ToolChain::getOSLibName(). Adapted from Compiler-RT.
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function (get_toolchain_os_dirname outvar)
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if (ANDROID)
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# The CMAKE_SYSTEM_NAME for Android is "Android", but the OS is Linux and the
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# driver will search for libraries in the "linux" directory.
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set(outval "linux")
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else ()
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string(TOLOWER "${CMAKE_SYSTEM_NAME}" outval)
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endif ()
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set(${outvar} "${outval}" PARENT_SCOPE)
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endfunction ()
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# Corresponds to Clang's ToolChain::getRuntimePath(). Adapted from Compiler-RT.
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function (get_toolchain_arch_dirname outvar)
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string(REPLACE "-" ";" triple_list ${LLVM_TARGET_TRIPLE})
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list(GET triple_list 0 arch)
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if("${arch}" MATCHES "^i.86$")
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# Android uses i686, but that's remapped at a later stage.
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set(arch "i386")
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endif()
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string(FIND ${LLVM_TARGET_TRIPLE} "-" dash_index)
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string(SUBSTRING ${LLVM_TARGET_TRIPLE} ${dash_index} -1 triple_suffix)
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string(SUBSTRING ${LLVM_TARGET_TRIPLE} 0 ${dash_index} triple_cpu)
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set(arch "${triple_cpu}")
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if("${arch}" MATCHES "^i.86$")
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# Android uses i686, but that's remapped at a later stage.
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set(arch "i386")
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endif()
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if(ANDROID AND ${arch} STREQUAL "i386")
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set(target "i686${triple_suffix}")
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elseif(${arch} STREQUAL "amd64")
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set(target "x86_64${triple_suffix}")
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elseif(${arch} STREQUAL "sparc64")
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set(target "sparcv9${triple_suffix}")
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elseif("${arch}" MATCHES "mips64|mips64el")
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string(REGEX REPLACE "-gnu.*" "-gnuabi64" triple_suffix_gnu "${triple_suffix}")
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string(REGEX REPLACE "mipsisa32" "mipsisa64" triple_cpu_mips "${triple_cpu}")
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string(REGEX REPLACE "^mips$" "mips64" triple_cpu_mips "${triple_cpu_mips}")
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string(REGEX REPLACE "^mipsel$" "mips64el" triple_cpu_mips "${triple_cpu_mips}")
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set(target "${triple_cpu_mips}${triple_suffix_gnu}")
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elseif("${arch}" MATCHES "mips|mipsel")
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string(REGEX REPLACE "-gnuabi.*" "-gnu" triple_suffix_gnu "${triple_suffix}")
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string(REGEX REPLACE "mipsisa64" "mipsisa32" triple_cpu_mips "${triple_cpu}")
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string(REGEX REPLACE "mips64" "mips" triple_cpu_mips "${triple_cpu_mips}")
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set(target "${triple_cpu_mips}${triple_suffix_gnu}")
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elseif("${arch}" MATCHES "^arm")
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# FIXME: Handle arch other than arm, armhf, armv6m
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if (${arch} STREQUAL "armhf")
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# If we are building for hard float but our ABI is soft float.
105+
if ("${triple_suffix}" MATCHES ".*eabi$")
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# Change "eabi" -> "eabihf"
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set(triple_suffix "${triple_suffix}hf")
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endif()
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# ABI is already set in the triple, don't repeat it in the architecture.
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set(arch "arm")
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else ()
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# If we are building for soft float, but the triple's ABI is hard float.
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if ("${triple_suffix}" MATCHES ".*eabihf$")
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# Change "eabihf" -> "eabi"
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string(REGEX REPLACE "hf$" "" triple_suffix "${triple_suffix}")
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endif()
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endif()
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set(target "${arch}${triple_suffix}")
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elseif("${arch}" MATCHES "^amdgcn")
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set(target "amdgcn-amd-amdhsa")
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elseif("${arch}" MATCHES "^nvptx")
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set(target "nvptx64-nvidia-cuda")
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else()
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set(target "${arch}${triple_suffix}")
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endif()
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set(${outvar} "${target}" PARENT_SCOPE)
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endfunction()

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