Matt Arsenault
00b2f81418
This reverts commit 08c728e852.
Reapply after runtimes build fixes on platforms without shared
libraries.
37 lines
1.4 KiB
CMake
37 lines
1.4 KiB
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 details.
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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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# Normalize a target triple using clang's -print-target-triple.
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#
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# Usage:
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# normalize_triple(<compiler> <triple> <out_var>)
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#
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# Runs <compiler> --target=<triple> -print-target-triple to produce a
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# canonical triple. If the compiler invocation fails (e.g. the compiler
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# is not clang), <triple> is returned unchanged.
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function(normalize_triple compiler triple out_var)
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set(_prefix "")
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if(CMAKE_C_COMPILER_FRONTEND_VARIANT MATCHES "MSVC")
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set(_prefix "/clang:")
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endif()
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execute_process(
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COMMAND "${compiler}" "${_prefix}--target=${triple}" "${_prefix}-print-target-triple"
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RESULT_VARIABLE _result
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OUTPUT_VARIABLE _output
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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if(_result EQUAL 0 AND _output)
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set(${out_var} "${_output}" PARENT_SCOPE)
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else()
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# TODO(#97876): Report an error.
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message(WARNING "Failed to execute `${compiler} ${_prefix}--target=${triple} ${_prefix}-print-target-triple` to normalize target triple.")
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set(${out_var} "${triple}" PARENT_SCOPE)
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endif()
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endfunction()
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