链接错误LNK2005几个CUDA文件 [英] Link error LNK2005 several CUDA files

问题描述

我遇到一些错误链接错误LNK2005 ...已定义的问题。文件如下：

  //文件Bitmap4.cu 
 #includeBitmap4.h// header 
 #includeBitmaps_cuda.h//只有内核定义的头
 
 ..... //我调用3 + 2内核函数（3在一个方法，1在另一个和另一个）
  

然后我有这个：

  // File Bitmap8.cu 
 #includeBitmap8.h// header 
 #includeBitmaps_cuda.h//同上面的
 
 ..... //我调用4个内核函数（4在同一方法）
  

然后我有内核头：

  #ifndef __BITMAPS_KERNEL__ 
 #define __BITMAPS_KERNEL__ 
 
 ...... // 9内核定义
 
 #endif 
  

最后，我有这个：

  // File Bitmaps_cuda.h 
 #include< cuda.h> 
 #include< cuda_runtime.h> 
 #include< device_launch_parameters.h> 
 #include< device_functions.h> 
 #include< stdio.h> 
 
 //这里有所有内核函数，文件
 // Bitmap4.cu和Bitmap8.cu使用
  

问题是，如果我不在位图* .cu中包含 #includeBitmaps_cuda.h当然，编译器会说我错过了内核函数的定义。我读了很多帖子，我已经包括了额外的Dipendencies和所需的PATH。当我添加文件Bitmap8.cu与它的相对内核，因为之前，应用程序正常工作开始的问题。

无论如何，这些是我有的错误：

  1> ; Bitmap8.cu.obj：错误LNK2005：void *的__cdecl big_random_block（INT（big_random_block @@ YAPAXH @ Z）在Bitmap4.cu.obj 
 1 GT已经定义; Bitmap8.cu.obj：错误LNK2005： ？为int * __cdecl big_random_block_int（INT（big_random_block_int @@ YAPAHH @ Z）中已经定义Bitmap4.cu.obj 
 1 GT; Bitmap8.cu.obj：错误LNK2005：unsigned char型__cdecl值（浮球，浮球，INT（已经定义在Bitmap4.cu.obj 
 1> Bitmap8.cu.obj：error LNK2005：void * __cdecl start_thread（unsigned int（__ stdcall *）（void *），void * ）（？start_thread @@ YAPAXP6GIPAX @ Z0 @ Z）已经在Bitmap4.cu.obj中定义
 1> Bitmap8.cu.obj：error LNK2005：void __cdecl end_thread（void *）（？end_thread @@ YAXPAX @ Z）在Bitmap4.cu.obj 
 1 GT已经定义; Bitmap8.cu.obj：错误LNK2005：无效__cdecl destroy_thread（无效*）（destroy_thread @@ YAXPAX @ Z）已经Bitmap4定义。 cu.obj 
 1> Bitmap8.cu.obj：error LNK2005：void __cdecl wait_for_threads（void * const *，int）（？wait_for_threads @@ YAXPBQAXH @ Z）已经在Bitmap4.cu.obj 
 1 GT; Bitmap8.cu.obj：错误LNK2005：（？__ device_stub__Z14float_to_colorPhPKf @@ YAXPAEPBM @ Z）作废__cdecl__device_stub__Z14float_to_colorPhPKf（无符号字符*，浮动常量*），在Bitmap4.cu.obj 
 1 GT已经定义; Bitmap8 .cu.obj：错误LNK2005：无效__cdecl float_to_color（无符号字符*，* float_const）（？float_to_color @@ YAXPAEPBM @ Z）在Bitmap4.cu.obj 
 1 GT已经定义; Bitmap8.cu.obj：错误LNK2005：无效__cdecl__device_stub__Z14float_to_colorP6uchar4PKf（结构uchar4 *，浮动常量*），在Bitmap4.cu.obj 
 1 GT已经定义; Bitmap8.cu.obj（__ device_stub__Z14float_to_colorP6uchar4PKf @@ YAXPAUuchar4 @@ PBM @ Z）：错误LNK2005 ：void __cdecl float_to_color（struct uchar4 *，float_const *）（？float_to_color @@ YAXPAUuchar4 @@ PBM @ Z）已经在Bitmap4.cu.obj中定义
 
 1> C：\Users\\ \\dberdin\documents\visual工作室2010\Projects\gpuSPAM\Debug\gpuSPAM.exe：致命错误LNK1169：一个或多个相乘定义的符号找到
  

我尝试了不同的解决方案，但是有任何结果。

$ b

EDIT

在网站（ http://msdn.microsoft.com/en-us/library/72zdcz6f.aspx ）我发现，那些原因之一错误是：

- 绝对定义两次，每个定义的值不同。

实际上，我有这些类型的定义，但我不能做不同。

解决方案

p>这些错误来了，因为我双包括一个文件。问题解决了！

I got some problems with the error "Link error LNK2005 ... already defined". The files are as follows:

// File Bitmap4.cu
#include "Bitmap4.h" // header
#include "Bitmaps_cuda.h" // header with just the definitions of the kernels

..... // I call 3+2 kernel functions (3 in one method, 1 in another and 1 in another one)

Then I have this one:

// File Bitmap8.cu
#include "Bitmap8.h" // header
#include "Bitmaps_cuda.h" // the same as above

..... // I call 4 kernel functions (4 in the same method)

Then I have the kernel header:

#ifndef __BITMAPS_KERNEL__
#define __BITMAPS_KERNEL__

......  // 9 kernels definitions

#endif

And finally, I have this one:

// File Bitmaps_cuda.h
#include <cuda.h>
#include <cuda_runtime.h>
#include <device_launch_parameters.h>
#include <device_functions.h>
#include <stdio.h>

// Inside here there all the kernel functions that the files 
// Bitmap4.cu and Bitmap8.cu are using

The problem is that, if i don't include the #include "Bitmaps_cuda.h" in one of the Bitmap*.cu, of course, the compiler will say that I missed the definitions of the kernels functions. I read a lot of posts and i already included the "Additional Dipendencies" and the required PATHs. The problems started when I added the file Bitmap8.cu with its relative kernels, because before that, the application was working properly.

Anyway, those are the error that i have:

1>Bitmap8.cu.obj : error LNK2005: "void * __cdecl big_random_block(int(?big_random_block@@YAPAXH@Z) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "int * __cdecl big_random_block_int(int(?big_random_block_int@@YAPAHH@Z) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "unsigned char __cdecl value(float,float,int(?value@@YAEMMH@Z) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void * __cdecl start_thread(unsigned int(__stdcall*)(void *),void *)" (?start_thread@@YAPAXP6GIPAX@Z0@Z) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl end_thread(void *)"(?end_thread@@YAXPAX@Z) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl destroy_thread(void *)"(?destroy_thread@@YAXPAX@Z) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl wait_for_threads(void * const *,int)"(?wait_for_threads@@YAXPBQAXH@Z) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl__device_stub__Z14float_to_colorPhPKf(unsigned char *,float const *)"(?__device_stub__Z14float_to_colorPhPKf@@YAXPAEPBM@Z) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl float_to_color(unsigned char *,float_const *)" (?float_to_color@@YAXPAEPBM@Z) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl__device_stub__Z14float_to_colorP6uchar4PKf(struct uchar4 *,float const *)"(?__device_stub__Z14float_to_colorP6uchar4PKf@@YAXPAUuchar4@@PBM@Z) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl float_to_color(struct uchar4 *,float_const *)" (?float_to_color@@YAXPAUuchar4@@PBM@Z) already defined in Bitmap4.cu.obj

1>C:\Users\dberdin\documents\visual studio 2010\Projects\gpuSPAM\Debug\gpuSPAM.exe : fatal error LNK1169: one or more multiply defined symbols found

I tried different solutions but with any results.

Thank you in advance!

EDIT

On the website (http://msdn.microsoft.com/en-us/library/72zdcz6f.aspx) i found that one of the causes of those errors is:
- An absolute is defined twice, with a different value in each definition.
Well, actually, as i wrote in the bottom, i have these kind of definetions, but i can't do differently. Any idea how to solve it ?

Thank you again in advance

解决方案

Those errors came because i double included a file. Problem Solved!

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