尽管已经提出了一个几乎完全相同的问题,但答案是针对OSX并且不再适用(反正真的是hacky).
问题是当在窗口上用clang编译cuda时,有大量的重新定义math_functions.hpp.
随着一些调查,显然CUDA决定把它math_functions.hpp和math_functions.h功能namespace std(这是甚至合法的吗？),并在所有的libstdc ++函数相撞cmath和铛自己的编译CUDA头.
我该如何处理？最好不要使用上一个问题中显示的hacky方式？
根据clang的文档,clang可以基于__global__/ __device__限定符重载,代码不应该只编译吗？
版本:
铿锵4.0.0(建立像这样)
的libstdc ++从GCC 7.1.0来
CUDA 8.0
窗口10
完整的错误输出
clang++ hellocuda.cu --cuda-path=E:\cuda\development --cuda-gpu-arch=sm_20 -LE:\cuda\development\lib\x64 -lcudart_static -ldl -lrt -std=c++1y -O2 -pedantic -Wall -Wextra -fms-extensions -o program.exe
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:191:
E:\cuda\development/include\math_functions.hpp:1684:14: error: redefinition of
'__isnan'
__func__(int __isnan(double a))
^
E:\TDM-GCC\mingw64 7.1.0\mingw64\x86_64-w64-mingw32\include\math.h:525:28: note:
previous definition is here
__CRT_INLINE int __cdecl __isnan (double _x)
^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:191:
E:\cuda\development/include\math_functions.hpp:1764:14: error: redefinition of
'__signbit'
__func__(int __signbit(double a))
^
E:\TDM-GCC\mingw64 7.1.0\mingw64\x86_64-w64-mingw32\include\math.h:611:28: note:
previous definition is here
__CRT_INLINE int __cdecl __signbit (double x) {
^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:191:
E:\cuda\development/include\math_functions.hpp:1776:17: error: redefinition of
'copysign'
__func__(double copysign(double a, double b))
^
E:\TDM-GCC\mingw64 7.1.0\mingw64\x86_64-w64-mingw32\include\math.h:1069:31: note:
previous definition is here
__CRT_INLINE double __cdecl copysign (double x, double y)
^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:191:
E:\cuda\development/include\math_functions.hpp:3161:14: error: redefinition of
'__signbitl'
__func__(int __signbitl(long double a))
^
E:\TDM-GCC\mingw64 7.1.0\mingw64\x86_64-w64-mingw32\include\math.h:636:28: note:
previous definition is here
__CRT_INLINE int __cdecl __signbitl (long double x) {
^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:191:
E:\cuda\development/include\math_functions.hpp:3166:14: error: redefinition of
'__signbitf'
__func__(int __signbitf(float a))
^
E:\TDM-GCC\mingw64 7.1.0\mingw64\x86_64-w64-mingw32\include\math.h:624:28: note:
previous definition is here
__CRT_INLINE int __cdecl __signbitf (float x) {
^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:191:
E:\cuda\development/include\math_functions.hpp:3191:14: error: redefinition of
'__isnanl'
__func__(int __isnanl(long double a))
^
E:\TDM-GCC\mingw64 7.1.0\mingw64\x86_64-w64-mingw32\include\math.h:565:28: note:
previous definition is here
__CRT_INLINE int __cdecl __isnanl (long double _x)
^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:191:
E:\cuda\development/include\math_functions.hpp:3196:14: error: redefinition of
'__isnanf'
__func__(int __isnanf(float a))
^
E:\TDM-GCC\mingw64 7.1.0\mingw64\x86_64-w64-mingw32\include\math.h:546:28: note:
previous definition is here
__CRT_INLINE int __cdecl __isnanf (float _x)
^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:191:
E:\cuda\development/include\math_functions.hpp:3360:16: error: redefinition of
'copysignf'
__func__(float copysignf(float a, float b))
^
E:\TDM-GCC\mingw64 7.1.0\mingw64\x86_64-w64-mingw32\include\math.h:1076:30: note:
previous definition is here
__CRT_INLINE float __cdecl copysignf (float x, float y)
^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:250:
E:\cuda\development/include\math_functions.hpp:365:43: error: functions that differ
only in their return type cannot be overloaded
static __inline__ __host__ __device__ int isinf(double a)
~~~ ^
E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_math_forward_declares.h:107:17: note:
previous declaration is here
__DEVICE__ bool isinf(double);
~~~~ ^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:250:
E:\cuda\development/include\math_functions.hpp:381:43: error: functions that differ
only in their return type cannot be overloaded
static __inline__ __host__ __device__ int isinf(float a)
~~~ ^
E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_math_forward_declares.h:108:17: note:
previous declaration is here
__DEVICE__ bool isinf(float);
~~~~ ^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:250:
E:\cuda\development/include\math_functions.hpp:413:43: error: functions that differ
only in their return type cannot be overloaded
static __inline__ __host__ __device__ int isnan(double a)
~~~ ^
E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_math_forward_declares.h:115:17: note:
previous declaration is here
__DEVICE__ bool isnan(double);
~~~~ ^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:250:
E:\cuda\development/include\math_functions.hpp:429:43: error: functions that differ
only in their return type cannot be overloaded
static __inline__ __host__ __device__ int isnan(float a)
~~~ ^
E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_math_forward_declares.h:116:17: note:
previous declaration is here
__DEVICE__ bool isnan(float);
~~~~ ^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:250:
E:\cuda\development/include\math_functions.hpp:461:43: error: functions that differ
only in their return type cannot be overloaded
static __inline__ __host__ __device__ int isfinite(double a)
~~~ ^
E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_math_forward_declares.h:101:17: note:
previous declaration is here
__DEVICE__ bool isfinite(double);
~~~~ ^
In file included from <built-in>:1:
In file included from E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_runtime_wrapper.h:250:
E:\cuda\development/include\math_functions.hpp:477:43: error: functions that differ
only in their return type cannot be overloaded
static __inline__ __host__ __device__ int isfinite(float a)
~~~ ^
E:\LLVM\bin\..\lib\clang\4.0.0\include\__clang_cuda_math_forward_declares.h:102:17: note:
previous declaration is here
__DEVICE__ bool isfinite(float);
~~~~ ^
14 errors generated.
makefile:15: recipe for target 'all' failed
mingw32-make: *** [all] Error 1
我尝试了很多东西。他们失败了。最后，我深入研究了标头，并从字面上宏化了任何有冲突的内容，这些冲突位于
clang 用于_MSC_VER检测 Windows，仅在使用 -fms-compatibility 标志时才定义，但这会因未知原因在其他地方导致大量其他错误。
_WIN32cuda 使用和的混合_MSC_VER来检测 Windows。据我所知，将所有重新定义的内容宏化是最简单的方法。
这似乎有效，因为没有弹出其他标头错误。
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