github.com/searKing/golang/go@v1.2.74/os/signal/cgo/include/boost/predef/compiler/nvcc.h (about)

     1  /*
     2  Copyright Benjamin Worpitz 2018
     3  Distributed under the Boost Software License, Version 1.0.
     4  (See accompanying file LICENSE_1_0.txt or copy at
     5  http://www.boost.org/LICENSE_1_0.txt)
     6  */
     7  
     8  #ifndef BOOST_PREDEF_COMPILER_NVCC_H
     9  #define BOOST_PREDEF_COMPILER_NVCC_H
    10  
    11  #include <boost/predef/version_number.h>
    12  #include <boost/predef/make.h>
    13  
    14  /*`
    15  [heading `BOOST_COMP_NVCC`]
    16  
    17  [@https://en.wikipedia.org/wiki/NVIDIA_CUDA_Compiler NVCC] compiler.
    18  Version number available as major, minor, and patch beginning with version 7.5.
    19  
    20  [table
    21      [[__predef_symbol__] [__predef_version__]]
    22  
    23      [[`__NVCC__`] [__predef_detection__]]
    24  
    25      [[`__CUDACC_VER_MAJOR__`, `__CUDACC_VER_MINOR__`, `__CUDACC_VER_BUILD__`] [V.R.P]]
    26      ]
    27   */
    28  
    29  #define BOOST_COMP_NVCC BOOST_VERSION_NUMBER_NOT_AVAILABLE
    30  
    31  #if defined(__NVCC__)
    32  #   if !defined(__CUDACC_VER_MAJOR__) || !defined(__CUDACC_VER_MINOR__) || !defined(__CUDACC_VER_BUILD__)
    33  #       define BOOST_COMP_NVCC_DETECTION BOOST_VERSION_NUMBER_AVAILABLE
    34  #   else
    35  #       define BOOST_COMP_NVCC_DETECTION BOOST_VERSION_NUMBER(__CUDACC_VER_MAJOR__, __CUDACC_VER_MINOR__, __CUDACC_VER_BUILD__)
    36  #   endif
    37  #endif
    38  
    39  #ifdef BOOST_COMP_NVCC_DETECTION
    40  /*
    41  Always define BOOST_COMP_NVCC instead of BOOST_COMP_NVCC_EMULATED
    42  The nvcc compilation process is somewhat special as can be read here:
    43  https://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/index.html#cuda-compilation-trajectory
    44  The nvcc compiler precompiles the input two times. Once for the device code
    45  being compiled by the cicc device compiler and once for the host code
    46  compiled by the real host compiler. NVCC uses gcc/clang/msvc/...
    47  depending on the host compiler being set on the command line.
    48  
    49  Predef (as a preprocessor only lib) detects the one doing the preprocessing
    50  as compiler and expects it to be the one doing the real compilation.
    51  This is not true for NVCC which is only doing the preprocessing and which
    52  is using another compiler for parts of its work. So for NVCC it should be
    53  allowed to set BOOST_COMP_NVCC additionally to the already detected host
    54  compiler because both is true: It is gcc/clang/... compiling the code, but it
    55  is also NVCC doing the preprocessing and adding some other quirks you may
    56  want to detect.
    57  
    58  This behavior is similar to what boost config is doing in `select_compiler_config.hpp`.
    59  There the NVCC detection is not handled as a real compiler (part of the
    60  #if-#elif) but as additional option before the real compiler.
    61  */
    62  #   undef BOOST_COMP_NVCC
    63  #   define BOOST_COMP_NVCC BOOST_COMP_NVCC_DETECTION
    64  #   define BOOST_COMP_NVCC_AVAILABLE
    65  #   include <boost/predef/detail/comp_detected.h>
    66  #endif
    67  
    68  #define BOOST_COMP_NVCC_NAME "NVCC"
    69  
    70  #endif
    71  
    72  #include <boost/predef/detail/test.h>
    73  BOOST_PREDEF_DECLARE_TEST(BOOST_COMP_NVCC,BOOST_COMP_NVCC_NAME)